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c5169e9064aa747bfc39792c161a60fcd56d6ce56cc8bfb996ead8dfe60ab53b | import logging
import os
import unittest
import warnings
from io import StringIO
from unittest import mock
from django.conf import settings
from django.contrib.staticfiles.finders import get_finder, get_finders
from django.contrib.staticfiles.storage import staticfiles_storage
from django.core.exceptions import ImproperlyConfigured
from django.core.files.storage import default_storage
from django.db import (
IntegrityError, connection, connections, models, router, transaction,
)
from django.forms import EmailField, IntegerField
from django.http import HttpResponse
from django.template.loader import render_to_string
from django.test import (
SimpleTestCase, TestCase, TransactionTestCase, ignore_warnings,
skipIfDBFeature, skipUnlessDBFeature,
)
from django.test.html import HTMLParseError, parse_html
from django.test.utils import (
CaptureQueriesContext, TestContextDecorator, isolate_apps,
override_settings, setup_test_environment,
)
from django.urls import NoReverseMatch, path, reverse, reverse_lazy
from django.utils.deprecation import RemovedInDjango41Warning
from django.utils.log import DEFAULT_LOGGING
from .models import Car, Person, PossessedCar
from .views import empty_response
class SkippingTestCase(SimpleTestCase):
def _assert_skipping(self, func, expected_exc, msg=None):
try:
if msg is not None:
with self.assertRaisesMessage(expected_exc, msg):
func()
else:
with self.assertRaises(expected_exc):
func()
except unittest.SkipTest:
self.fail('%s should not result in a skipped test.' % func.__name__)
def test_skip_unless_db_feature(self):
"""
Testing the django.test.skipUnlessDBFeature decorator.
"""
# Total hack, but it works, just want an attribute that's always true.
@skipUnlessDBFeature("__class__")
def test_func():
raise ValueError
@skipUnlessDBFeature("notprovided")
def test_func2():
raise ValueError
@skipUnlessDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipUnlessDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
self._assert_skipping(test_func, ValueError)
self._assert_skipping(test_func2, unittest.SkipTest)
self._assert_skipping(test_func3, ValueError)
self._assert_skipping(test_func4, unittest.SkipTest)
class SkipTestCase(SimpleTestCase):
@skipUnlessDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipUnlessDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
def test_skip_if_db_feature(self):
"""
Testing the django.test.skipIfDBFeature decorator.
"""
@skipIfDBFeature("__class__")
def test_func():
raise ValueError
@skipIfDBFeature("notprovided")
def test_func2():
raise ValueError
@skipIfDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipIfDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
@skipIfDBFeature("notprovided", "notprovided")
def test_func5():
raise ValueError
self._assert_skipping(test_func, unittest.SkipTest)
self._assert_skipping(test_func2, ValueError)
self._assert_skipping(test_func3, unittest.SkipTest)
self._assert_skipping(test_func4, unittest.SkipTest)
self._assert_skipping(test_func5, ValueError)
class SkipTestCase(SimpleTestCase):
@skipIfDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipIfDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
class SkippingClassTestCase(TestCase):
def test_skip_class_unless_db_feature(self):
@skipUnlessDBFeature("__class__")
class NotSkippedTests(TestCase):
def test_dummy(self):
return
@skipUnlessDBFeature("missing")
@skipIfDBFeature("__class__")
class SkippedTests(TestCase):
def test_will_be_skipped(self):
self.fail("We should never arrive here.")
@skipIfDBFeature("__dict__")
class SkippedTestsSubclass(SkippedTests):
pass
test_suite = unittest.TestSuite()
test_suite.addTest(NotSkippedTests('test_dummy'))
try:
test_suite.addTest(SkippedTests('test_will_be_skipped'))
test_suite.addTest(SkippedTestsSubclass('test_will_be_skipped'))
except unittest.SkipTest:
self.fail('SkipTest should not be raised here.')
result = unittest.TextTestRunner(stream=StringIO()).run(test_suite)
self.assertEqual(result.testsRun, 3)
self.assertEqual(len(result.skipped), 2)
self.assertEqual(result.skipped[0][1], 'Database has feature(s) __class__')
self.assertEqual(result.skipped[1][1], 'Database has feature(s) __class__')
def test_missing_default_databases(self):
@skipIfDBFeature('missing')
class MissingDatabases(SimpleTestCase):
def test_assertion_error(self):
pass
suite = unittest.TestSuite()
try:
suite.addTest(MissingDatabases('test_assertion_error'))
except unittest.SkipTest:
self.fail("SkipTest should not be raised at this stage")
runner = unittest.TextTestRunner(stream=StringIO())
msg = (
"skipIfDBFeature cannot be used on <class 'test_utils.tests."
"SkippingClassTestCase.test_missing_default_databases.<locals>."
"MissingDatabases'> as it doesn't allow queries against the "
"'default' database."
)
with self.assertRaisesMessage(ValueError, msg):
runner.run(suite)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesTests(TestCase):
def test_assert_num_queries(self):
def test_func():
raise ValueError
with self.assertRaises(ValueError):
self.assertNumQueries(2, test_func)
def test_assert_num_queries_with_client(self):
person = Person.objects.create(name='test')
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
def test_func():
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.assertNumQueries(2, test_func)
@unittest.skipUnless(
connection.vendor != 'sqlite' or not connection.is_in_memory_db(),
'For SQLite in-memory tests, closing the connection destroys the database.'
)
class AssertNumQueriesUponConnectionTests(TransactionTestCase):
available_apps = []
def test_ignores_connection_configuration_queries(self):
real_ensure_connection = connection.ensure_connection
connection.close()
def make_configuration_query():
is_opening_connection = connection.connection is None
real_ensure_connection()
if is_opening_connection:
# Avoid infinite recursion. Creating a cursor calls
# ensure_connection() which is currently mocked by this method.
with connection.cursor() as cursor:
cursor.execute('SELECT 1' + connection.features.bare_select_suffix)
ensure_connection = 'django.db.backends.base.base.BaseDatabaseWrapper.ensure_connection'
with mock.patch(ensure_connection, side_effect=make_configuration_query):
with self.assertNumQueries(1):
list(Car.objects.all())
class AssertQuerysetEqualTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.p1 = Person.objects.create(name='p1')
cls.p2 = Person.objects.create(name='p2')
def test_empty(self):
self.assertQuerysetEqual(Person.objects.filter(name='p3'), [])
def test_ordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1, self.p2],
)
def test_unordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p2, self.p1],
ordered=False
)
def test_queryset(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
Person.objects.all().order_by('name'),
)
def test_flat_values_list(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name').values_list('name', flat=True),
['p1', 'p2'],
)
def test_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1.pk, self.p2.pk],
transform=lambda x: x.pk
)
def test_repr_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[repr(self.p1), repr(self.p2)],
transform=repr,
)
def test_undefined_order(self):
# Using an unordered queryset with more than one ordered value
# is an error.
msg = (
'Trying to compare non-ordered queryset against more than one '
'ordered value.'
)
with self.assertRaisesMessage(ValueError, msg):
self.assertQuerysetEqual(
Person.objects.all(),
[self.p1, self.p2],
)
# No error for one value.
self.assertQuerysetEqual(Person.objects.filter(name='p1'), [self.p1])
def test_repeated_values(self):
"""
assertQuerysetEqual checks the number of appearance of each item
when used with option ordered=False.
"""
batmobile = Car.objects.create(name='Batmobile')
k2000 = Car.objects.create(name='K 2000')
PossessedCar.objects.bulk_create([
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
])
with self.assertRaises(AssertionError):
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile, k2000],
ordered=False
)
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile] * 2 + [k2000] * 4,
ordered=False
)
def test_maxdiff(self):
names = ['Joe Smith %s' % i for i in range(20)]
Person.objects.bulk_create([Person(name=name) for name in names])
names.append('Extra Person')
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
self.assertIn('Set self.maxDiff to None to see it.', str(ctx.exception))
original = self.maxDiff
self.maxDiff = None
try:
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
finally:
self.maxDiff = original
exception_msg = str(ctx.exception)
self.assertNotIn('Set self.maxDiff to None to see it.', exception_msg)
for name in names:
self.assertIn(name, exception_msg)
class AssertQuerysetEqualDeprecationTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.p1 = Person.objects.create(name='p1')
cls.p2 = Person.objects.create(name='p2')
@ignore_warnings(category=RemovedInDjango41Warning)
def test_str_values(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[repr(self.p1), repr(self.p2)],
)
def test_str_values_warning(self):
msg = (
"In Django 4.1, repr() will not be called automatically on a "
"queryset when compared to string values. Set an explicit "
"'transform' to silence this warning."
)
with self.assertRaisesMessage(RemovedInDjango41Warning, msg):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[repr(self.p1), repr(self.p2)],
)
@override_settings(ROOT_URLCONF='test_utils.urls')
class CaptureQueriesContextManagerTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.person_pk = str(Person.objects.create(name='test').pk)
def test_simple(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
pass
self.assertEqual(0, len(captured_queries))
def test_within(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
def test_nested(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.count()
with CaptureQueriesContext(connection) as nested_captured_queries:
Person.objects.count()
self.assertEqual(1, len(nested_captured_queries))
self.assertEqual(2, len(captured_queries))
def test_failure(self):
with self.assertRaises(TypeError):
with CaptureQueriesContext(connection):
raise TypeError
def test_with_client(self):
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 2)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
self.assertIn(self.person_pk, captured_queries[1]['sql'])
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesContextManagerTests(TestCase):
def test_simple(self):
with self.assertNumQueries(0):
pass
with self.assertNumQueries(1):
Person.objects.count()
with self.assertNumQueries(2):
Person.objects.count()
Person.objects.count()
def test_failure(self):
msg = (
'1 != 2 : 1 queries executed, 2 expected\nCaptured queries were:\n'
'1.'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNumQueries(2):
Person.objects.count()
with self.assertRaises(TypeError):
with self.assertNumQueries(4000):
raise TypeError
def test_with_client(self):
person = Person.objects.create(name="test")
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(2):
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertTemplateUsedContextManagerTests(SimpleTestCase):
def test_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed(template_name='template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
render_to_string('template_used/base.html')
def test_nested_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/include.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/extends.html'):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/alternative.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateNotUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
def test_not_used(self):
with self.assertTemplateNotUsed('template_used/base.html'):
pass
with self.assertTemplateNotUsed('template_used/alternative.html'):
pass
def test_error_message(self):
msg = 'template_used/base.html was not rendered. No template was rendered.'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name='template_used/base.html'):
pass
msg2 = (
'template_used/base.html was not rendered. Following templates '
'were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg2):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
with self.assertRaisesMessage(AssertionError, 'No templates used to render the response'):
response = self.client.get('/test_utils/no_template_used/')
self.assertTemplateUsed(response, 'template_used/base.html')
def test_failure(self):
msg = 'response and/or template_name argument must be provided'
with self.assertRaisesMessage(TypeError, msg):
with self.assertTemplateUsed():
pass
msg = 'No templates used to render the response'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
render_to_string('template_used/base.html')
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name=''):
pass
msg = (
'template_used/base.html was not rendered. Following '
'templates were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
def test_assert_used_on_http_response(self):
response = HttpResponse()
error_msg = (
'assertTemplateUsed() and assertTemplateNotUsed() are only '
'usable on responses fetched using the Django test Client.'
)
with self.assertRaisesMessage(ValueError, error_msg):
self.assertTemplateUsed(response, 'template.html')
with self.assertRaisesMessage(ValueError, error_msg):
self.assertTemplateNotUsed(response, 'template.html')
class HTMLEqualTests(SimpleTestCase):
def test_html_parser(self):
element = parse_html('<div><p>Hello</p></div>')
self.assertEqual(len(element.children), 1)
self.assertEqual(element.children[0].name, 'p')
self.assertEqual(element.children[0].children[0], 'Hello')
parse_html('<p>')
parse_html('<p attr>')
dom = parse_html('<p>foo')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.name, 'p')
self.assertEqual(dom[0], 'foo')
def test_parse_html_in_script(self):
parse_html('<script>var a = "<p" + ">";</script>')
parse_html('''
<script>
var js_sha_link='<p>***</p>';
</script>
''')
# script content will be parsed to text
dom = parse_html('''
<script><p>foo</p> '</scr'+'ipt>' <span>bar</span></script>
''')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.children[0], "<p>foo</p> '</scr'+'ipt>' <span>bar</span>")
def test_self_closing_tags(self):
self_closing_tags = [
'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link',
'meta', 'param', 'source', 'track', 'wbr',
# Deprecated tags
'frame', 'spacer',
]
for tag in self_closing_tags:
with self.subTest(tag):
dom = parse_html('<p>Hello <%s> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
dom = parse_html('<p>Hello <%s /> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
def test_simple_equal_html(self):
self.assertHTMLEqual('', '')
self.assertHTMLEqual('<p></p>', '<p></p>')
self.assertHTMLEqual('<p></p>', ' <p> </p> ')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div><p>Hello</p></div>')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div> <p>Hello</p> </div>')
self.assertHTMLEqual(
'<div>\n<p>Hello</p></div>',
'<div><p>Hello</p></div>\n')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<p>Hello World !</p>',
'<p>Hello World\n\n!</p>')
self.assertHTMLEqual('<p> </p>', '<p></p>')
self.assertHTMLEqual('<p/>', '<p></p>')
self.assertHTMLEqual('<p />', '<p></p>')
self.assertHTMLEqual('<input checked>', '<input checked="checked">')
self.assertHTMLEqual('<p>Hello', '<p> Hello')
self.assertHTMLEqual('<p>Hello</p>World', '<p>Hello</p> World')
def test_ignore_comments(self):
self.assertHTMLEqual(
'<div>Hello<!-- this is a comment --> World!</div>',
'<div>Hello World!</div>')
def test_unequal_html(self):
self.assertHTMLNotEqual('<p>Hello</p>', '<p>Hello!</p>')
self.assertHTMLNotEqual('<p>foobar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo bar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo nbsp</p>', '<p>foo </p>')
self.assertHTMLNotEqual('<p>foo #20</p>', '<p>foo </p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span><span>World</span></p>',
'<p><span>Hello</span>World</p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span>World</p>',
'<p><span>Hello</span><span>World</span></p>')
def test_attributes(self):
self.assertHTMLEqual(
'<input type="text" id="id_name" />',
'<input id="id_name" type="text" />')
self.assertHTMLEqual(
'''<input type='text' id="id_name" />''',
'<input id="id_name" type="text" />')
self.assertHTMLNotEqual(
'<input type="text" id="id_name" />',
'<input type="password" id="id_name" />')
def test_class_attribute(self):
pairs = [
('<p class="foo bar"></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class="foo\tbar"></p>', '<p class="bar foo"></p>'),
('<p class="\tfoo\tbar\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t\t\tfoo\t\t\tbar\t\t\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t \nfoo \t\nbar\n\t "></p>', '<p class="bar foo"></p>'),
]
for html1, html2 in pairs:
with self.subTest(html1):
self.assertHTMLEqual(html1, html2)
def test_boolean_attribute(self):
html1 = '<input checked>'
html2 = '<input checked="">'
html3 = '<input checked="checked">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLEqual(html1, html3)
self.assertHTMLEqual(html2, html3)
self.assertHTMLNotEqual(html1, '<input checked="invalid">')
self.assertEqual(str(parse_html(html1)), '<input checked>')
self.assertEqual(str(parse_html(html2)), '<input checked>')
self.assertEqual(str(parse_html(html3)), '<input checked>')
def test_non_boolean_attibutes(self):
html1 = '<input value>'
html2 = '<input value="">'
html3 = '<input value="value">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLNotEqual(html1, html3)
self.assertEqual(str(parse_html(html1)), '<input value="">')
self.assertEqual(str(parse_html(html2)), '<input value="">')
def test_normalize_refs(self):
pairs = [
(''', '''),
(''', "'"),
(''', '''),
(''', "'"),
("'", '''),
("'", '''),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
]
for pair in pairs:
with self.subTest(repr(pair)):
self.assertHTMLEqual(*pair)
def test_complex_examples(self):
self.assertHTMLEqual(
"""<tr><th><label for="id_first_name">First name:</label></th>
<td><input type="text" name="first_name" value="John" id="id_first_name" /></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><input type="text" id="id_last_name" name="last_name" value="Lennon" /></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><input type="text" value="1940-10-9" name="birthday" id="id_birthday" /></td></tr>""",
"""
<tr><th>
<label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" />
</td></tr>
<tr><th>
<label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" />
</td></tr>
<tr><th>
<label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" />
</td></tr>
""")
self.assertHTMLEqual(
"""<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p>
This is a valid paragraph
<div> this is a div AFTER the p</div>
</body>
</html>""", """
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p> This is a valid paragraph
<!-- browsers would close the p tag here -->
<div> this is a div AFTER the p</div>
</p> <!-- this is invalid HTML parsing, but it should make no
difference in most cases -->
</body>
</html>""")
def test_html_contain(self):
# equal html contains each other
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
self.assertIn(dom2, dom1)
dom2 = parse_html('<div><p>foo</p></div>')
self.assertIn(dom1, dom2)
self.assertNotIn(dom2, dom1)
self.assertNotIn('<p>foo</p>', dom2)
self.assertIn('foo', dom2)
# when a root element is used ...
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertIn(dom2, dom1)
def test_count(self):
# equal html contains each other one time
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertEqual(dom1.count(dom2), 1)
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo foo</p><p>foo</p>')
self.assertEqual(dom2.count('foo'), 3)
dom2 = parse_html('<p class="bar">foo</p>')
self.assertEqual(dom2.count('bar'), 0)
self.assertEqual(dom2.count('class'), 0)
self.assertEqual(dom2.count('p'), 0)
self.assertEqual(dom2.count('o'), 2)
dom2 = parse_html('<p>foo</p><p>foo</p>')
self.assertEqual(dom2.count(dom1), 2)
dom2 = parse_html('<div><p>foo<input type=""></p><p>foo</p></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<div><div><p>foo</p></div></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>foo</p></p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>bar</p></p>')
self.assertEqual(dom2.count(dom1), 0)
# HTML with a root element contains the same HTML with no root element.
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 1)
# Target of search is a sequence of child elements and appears more
# than once.
dom2 = parse_html('<div><p>foo</p><p>bar</p><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 2)
# Searched HTML has additional children.
dom1 = parse_html('<a/><b/>')
dom2 = parse_html('<a/><b/><c/>')
self.assertEqual(dom2.count(dom1), 1)
# No match found in children.
dom1 = parse_html('<b/><a/>')
self.assertEqual(dom2.count(dom1), 0)
# Target of search found among children and grandchildren.
dom1 = parse_html('<b/><b/>')
dom2 = parse_html('<a><b/><b/></a><b/><b/>')
self.assertEqual(dom2.count(dom1), 2)
def test_parsing_errors(self):
with self.assertRaises(AssertionError):
self.assertHTMLEqual('<p>', '')
with self.assertRaises(AssertionError):
self.assertHTMLEqual('', '<p>')
error_msg = (
"First argument is not valid HTML:\n"
"('Unexpected end tag `div` (Line 1, Column 6)', (1, 6))"
)
with self.assertRaisesMessage(AssertionError, error_msg):
self.assertHTMLEqual('< div></ div>', '<div></div>')
with self.assertRaises(HTMLParseError):
parse_html('</p>')
def test_contains_html(self):
response = HttpResponse('''<body>
This is a form: <form method="get">
<input type="text" name="Hello" />
</form></body>''')
self.assertNotContains(response, "<input name='Hello' type='text'>")
self.assertContains(response, '<form method="get">')
self.assertContains(response, "<input name='Hello' type='text'>", html=True)
self.assertNotContains(response, '<form method="get">', html=True)
invalid_response = HttpResponse('''<body <bad>>''')
with self.assertRaises(AssertionError):
self.assertContains(invalid_response, '<p></p>')
with self.assertRaises(AssertionError):
self.assertContains(response, '<p "whats" that>')
def test_unicode_handling(self):
response = HttpResponse('<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>')
self.assertContains(
response,
'<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>',
html=True
)
class JSONEqualTests(SimpleTestCase):
def test_simple_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_unordered(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz", "attr1": "foo"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(json1, json2)
def test_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONEqual(valid_json, invalid_json)
def test_simple_not_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
self.assertJSONNotEqual(json1, json2)
def test_simple_not_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(json1, json2)
def test_not_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(valid_json, invalid_json)
class XMLEqualTests(SimpleTestCase):
def test_simple_equal(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_unordered(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raise(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raises_message(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
msg = '''{xml1} != {xml2}
- <elem attr1='a' />
+ <elem attr2='b' attr1='a' />
? ++++++++++
'''.format(xml1=repr(xml1), xml2=repr(xml2))
with self.assertRaisesMessage(AssertionError, msg):
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal(self):
xml1 = "<elem attr1='a' attr2='c' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLNotEqual(xml1, xml2)
def test_simple_not_equal_raise(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml1, xml2)
def test_parsing_errors(self):
xml_unvalid = "<elem attr1='a attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml_unvalid, xml2)
def test_comment_root(self):
xml1 = "<?xml version='1.0'?><!-- comment1 --><elem attr1='a' attr2='b' />"
xml2 = "<?xml version='1.0'?><!-- comment2 --><elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_with_leading_or_trailing_whitespace(self):
xml1 = "<elem>foo</elem> \t\n"
xml2 = " \t\n<elem>foo</elem>"
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal_with_whitespace_in_the_middle(self):
xml1 = "<elem>foo</elem><elem>bar</elem>"
xml2 = "<elem>foo</elem> <elem>bar</elem>"
self.assertXMLNotEqual(xml1, xml2)
def test_doctype_root(self):
xml1 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example1.dtd"><root />'
xml2 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example2.dtd"><root />'
self.assertXMLEqual(xml1, xml2)
def test_processing_instruction(self):
xml1 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example1.com"?><root />'
)
xml2 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example2.com"?><root />'
)
self.assertXMLEqual(xml1, xml2)
self.assertXMLEqual(
'<?xml-stylesheet href="style1.xslt" type="text/xsl"?><root />',
'<?xml-stylesheet href="style2.xslt" type="text/xsl"?><root />',
)
class SkippingExtraTests(TestCase):
fixtures = ['should_not_be_loaded.json']
# HACK: This depends on internals of our TestCase subclasses
def __call__(self, result=None):
# Detect fixture loading by counting SQL queries, should be zero
with self.assertNumQueries(0):
super().__call__(result)
@unittest.skip("Fixture loading should not be performed for skipped tests.")
def test_fixtures_are_skipped(self):
pass
class AssertRaisesMsgTest(SimpleTestCase):
def test_assert_raises_message(self):
msg = "'Expected message' not found in 'Unexpected message'"
# context manager form of assertRaisesMessage()
with self.assertRaisesMessage(AssertionError, msg):
with self.assertRaisesMessage(ValueError, "Expected message"):
raise ValueError("Unexpected message")
# callable form
def func():
raise ValueError("Unexpected message")
with self.assertRaisesMessage(AssertionError, msg):
self.assertRaisesMessage(ValueError, "Expected message", func)
def test_special_re_chars(self):
"""assertRaisesMessage shouldn't interpret RE special chars."""
def func1():
raise ValueError("[.*x+]y?")
with self.assertRaisesMessage(ValueError, "[.*x+]y?"):
func1()
class AssertWarnsMessageTests(SimpleTestCase):
def test_context_manager(self):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Expected message', UserWarning)
def test_context_manager_failure(self):
msg = "Expected message' not found in 'Unexpected message'"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Unexpected message', UserWarning)
def test_callable(self):
def func():
warnings.warn('Expected message', UserWarning)
self.assertWarnsMessage(UserWarning, 'Expected message', func)
def test_special_re_chars(self):
def func1():
warnings.warn('[.*x+]y?', UserWarning)
with self.assertWarnsMessage(UserWarning, '[.*x+]y?'):
func1()
# TODO: Remove when dropping support for PY39.
class AssertNoLogsTest(SimpleTestCase):
@classmethod
def setUpClass(cls):
super().setUpClass()
logging.config.dictConfig(DEFAULT_LOGGING)
cls.addClassCleanup(logging.config.dictConfig, settings.LOGGING)
def setUp(self):
self.logger = logging.getLogger('django')
@override_settings(DEBUG=True)
def test_fails_when_log_emitted(self):
msg = "Unexpected logs found: ['INFO:django:FAIL!']"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django', 'INFO'):
self.logger.info('FAIL!')
@override_settings(DEBUG=True)
def test_text_level(self):
with self.assertNoLogs('django', 'INFO'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_int_level(self):
with self.assertNoLogs('django', logging.INFO):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_default_level(self):
with self.assertNoLogs('django'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_does_not_hide_other_failures(self):
msg = '1 != 2'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django'):
self.assertEqual(1, 2)
class AssertFieldOutputTests(SimpleTestCase):
def test_assert_field_output(self):
error_invalid = ['Enter a valid email address.']
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid + ['Another error']})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': 'Wrong output'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(
EmailField, {'[email protected]': '[email protected]'}, {'aaa': ['Come on, gimme some well formatted data, dude.']}
)
def test_custom_required_message(self):
class MyCustomField(IntegerField):
default_error_messages = {
'required': 'This is really required.',
}
self.assertFieldOutput(MyCustomField, {}, {}, empty_value=None)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertURLEqualTests(SimpleTestCase):
def test_equal(self):
valid_tests = (
('http://example.com/?', 'http://example.com/'),
('http://example.com/?x=1&', 'http://example.com/?x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2&a=1&a=2', 'http://example.com/?a=1&a=2&y=2&x=1'),
('/path/to/?x=1&y=2&z=3', '/path/to/?z=3&y=2&x=1'),
('?x=1&y=2&z=3', '?z=3&y=2&x=1'),
('/test_utils/no_template_used/', reverse_lazy('no_template_used')),
)
for url1, url2 in valid_tests:
with self.subTest(url=url1):
self.assertURLEqual(url1, url2)
def test_not_equal(self):
invalid_tests = (
# Protocol must be the same.
('http://example.com/', 'https://example.com/'),
('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1'),
('http://example.com/?x=1&y=bar&x=2', 'https://example.com/?y=bar&x=2&x=1'),
# Parameters of the same name must be in the same order.
('/path/to?a=1&a=2', '/path/to/?a=2&a=1')
)
for url1, url2 in invalid_tests:
with self.subTest(url=url1), self.assertRaises(AssertionError):
self.assertURLEqual(url1, url2)
def test_message(self):
msg = (
"Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1')
def test_msg_prefix(self):
msg = (
"Prefix: Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual(
'http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1',
msg_prefix='Prefix: ',
)
class FirstUrls:
urlpatterns = [path('first/', empty_response, name='first')]
class SecondUrls:
urlpatterns = [path('second/', empty_response, name='second')]
class SetupTestEnvironmentTests(SimpleTestCase):
def test_setup_test_environment_calling_more_than_once(self):
with self.assertRaisesMessage(RuntimeError, "setup_test_environment() was already called"):
setup_test_environment()
def test_allowed_hosts(self):
for type_ in (list, tuple):
with self.subTest(type_=type_):
allowed_hosts = type_('*')
with mock.patch('django.test.utils._TestState') as x:
del x.saved_data
with self.settings(ALLOWED_HOSTS=allowed_hosts):
setup_test_environment()
self.assertEqual(settings.ALLOWED_HOSTS, ['*', 'testserver'])
class OverrideSettingsTests(SimpleTestCase):
# #21518 -- If neither override_settings nor a setting_changed receiver
# clears the URL cache between tests, then one of test_first or
# test_second will fail.
@override_settings(ROOT_URLCONF=FirstUrls)
def test_urlconf_first(self):
reverse('first')
@override_settings(ROOT_URLCONF=SecondUrls)
def test_urlconf_second(self):
reverse('second')
def test_urlconf_cache(self):
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=FirstUrls):
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=SecondUrls):
with self.assertRaises(NoReverseMatch):
reverse('first')
self.client.get(reverse('second'))
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
def test_override_media_root(self):
"""
Overriding the MEDIA_ROOT setting should be reflected in the
base_location attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_ROOT='test_value'):
self.assertEqual(default_storage.base_location, 'test_value')
def test_override_media_url(self):
"""
Overriding the MEDIA_URL setting should be reflected in the
base_url attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_URL='/test_value/'):
self.assertEqual(default_storage.base_url, '/test_value/')
def test_override_file_upload_permissions(self):
"""
Overriding the FILE_UPLOAD_PERMISSIONS setting should be reflected in
the file_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.file_permissions_mode, 0o644)
with self.settings(FILE_UPLOAD_PERMISSIONS=0o777):
self.assertEqual(default_storage.file_permissions_mode, 0o777)
def test_override_file_upload_directory_permissions(self):
"""
Overriding the FILE_UPLOAD_DIRECTORY_PERMISSIONS setting should be
reflected in the directory_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertIsNone(default_storage.directory_permissions_mode)
with self.settings(FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o777):
self.assertEqual(default_storage.directory_permissions_mode, 0o777)
def test_override_database_routers(self):
"""
Overriding DATABASE_ROUTERS should update the master router.
"""
test_routers = [object()]
with self.settings(DATABASE_ROUTERS=test_routers):
self.assertEqual(router.routers, test_routers)
def test_override_static_url(self):
"""
Overriding the STATIC_URL setting should be reflected in the
base_url attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_URL='/test/'):
self.assertEqual(staticfiles_storage.base_url, '/test/')
def test_override_static_root(self):
"""
Overriding the STATIC_ROOT setting should be reflected in the
location attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_ROOT='/tmp/test'):
self.assertEqual(staticfiles_storage.location, os.path.abspath('/tmp/test'))
def test_override_staticfiles_storage(self):
"""
Overriding the STATICFILES_STORAGE setting should be reflected in
the value of django.contrib.staticfiles.storage.staticfiles_storage.
"""
new_class = 'ManifestStaticFilesStorage'
new_storage = 'django.contrib.staticfiles.storage.' + new_class
with self.settings(STATICFILES_STORAGE=new_storage):
self.assertEqual(staticfiles_storage.__class__.__name__, new_class)
def test_override_staticfiles_finders(self):
"""
Overriding the STATICFILES_FINDERS setting should be reflected in
the return value of django.contrib.staticfiles.finders.get_finders.
"""
current = get_finders()
self.assertGreater(len(list(current)), 1)
finders = ['django.contrib.staticfiles.finders.FileSystemFinder']
with self.settings(STATICFILES_FINDERS=finders):
self.assertEqual(len(list(get_finders())), len(finders))
def test_override_staticfiles_dirs(self):
"""
Overriding the STATICFILES_DIRS setting should be reflected in
the locations attribute of the
django.contrib.staticfiles.finders.FileSystemFinder instance.
"""
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
test_path = '/tmp/test'
expected_location = ('', test_path)
self.assertNotIn(expected_location, finder.locations)
with self.settings(STATICFILES_DIRS=[test_path]):
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
self.assertIn(expected_location, finder.locations)
class TestBadSetUpTestData(TestCase):
"""
An exception in setUpTestData() shouldn't leak a transaction which would
cascade across the rest of the test suite.
"""
class MyException(Exception):
pass
@classmethod
def setUpClass(cls):
try:
super().setUpClass()
except cls.MyException:
cls._in_atomic_block = connection.in_atomic_block
@classmethod
def tearDownClass(Cls):
# override to avoid a second cls._rollback_atomics() which would fail.
# Normal setUpClass() methods won't have exception handling so this
# method wouldn't typically be run.
pass
@classmethod
def setUpTestData(cls):
# Simulate a broken setUpTestData() method.
raise cls.MyException()
def test_failure_in_setUpTestData_should_rollback_transaction(self):
# setUpTestData() should call _rollback_atomics() so that the
# transaction doesn't leak.
self.assertFalse(self._in_atomic_block)
class CaptureOnCommitCallbacksTests(TestCase):
databases = {'default', 'other'}
callback_called = False
def enqueue_callback(self, using='default'):
def hook():
self.callback_called = True
transaction.on_commit(hook, using=using)
def test_no_arguments(self):
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_using(self):
with self.captureOnCommitCallbacks(using='other') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_different_using(self):
with self.captureOnCommitCallbacks(using='default') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(callbacks, [])
def test_execute(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, True)
def test_pre_callback(self):
def pre_hook():
pass
transaction.on_commit(pre_hook, using='default')
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertNotEqual(callbacks[0], pre_hook)
def test_with_rolled_back_savepoint(self):
with self.captureOnCommitCallbacks() as callbacks:
try:
with transaction.atomic():
self.enqueue_callback()
raise IntegrityError
except IntegrityError:
# Inner transaction.atomic() has been rolled back.
pass
self.assertEqual(callbacks, [])
def test_execute_recursive(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
transaction.on_commit(self.enqueue_callback)
self.assertEqual(len(callbacks), 2)
self.assertIs(self.callback_called, True)
class DisallowedDatabaseQueriesTests(SimpleTestCase):
def test_disallowed_database_connections(self):
expected_message = (
"Database connections to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
connection.connect()
with self.assertRaisesMessage(AssertionError, expected_message):
connection.temporary_connection()
def test_disallowed_database_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
Car.objects.first()
def test_disallowed_database_chunked_cursor_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
next(Car.objects.iterator())
class AllowedDatabaseQueriesTests(SimpleTestCase):
databases = {'default'}
def test_allowed_database_queries(self):
Car.objects.first()
def test_allowed_database_chunked_cursor_queries(self):
next(Car.objects.iterator(), None)
class DatabaseAliasTests(SimpleTestCase):
def setUp(self):
self.addCleanup(setattr, self.__class__, 'databases', self.databases)
def test_no_close_match(self):
self.__class__.databases = {'void'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'void' which is not defined "
"in settings.DATABASES."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_close_match(self):
self.__class__.databases = {'defualt'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'defualt' which is not defined "
"in settings.DATABASES. Did you mean 'default'?"
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_match(self):
self.__class__.databases = {'default', 'other'}
self.assertEqual(self._validate_databases(), frozenset({'default', 'other'}))
def test_all(self):
self.__class__.databases = '__all__'
self.assertEqual(self._validate_databases(), frozenset(connections))
@isolate_apps('test_utils', attr_name='class_apps')
class IsolatedAppsTests(SimpleTestCase):
def test_installed_apps(self):
self.assertEqual([app_config.label for app_config in self.class_apps.get_app_configs()], ['test_utils'])
def test_class_decoration(self):
class ClassDecoration(models.Model):
pass
self.assertEqual(ClassDecoration._meta.apps, self.class_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_method_decoration(self, method_apps):
class MethodDecoration(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
def test_context_manager(self):
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
self.assertEqual(ContextManager._meta.apps, context_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_nested(self, method_apps):
class MethodDecoration(models.Model):
pass
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
with isolate_apps('test_utils') as nested_context_apps:
class NestedContextManager(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
self.assertEqual(ContextManager._meta.apps, context_apps)
self.assertEqual(NestedContextManager._meta.apps, nested_context_apps)
class DoNothingDecorator(TestContextDecorator):
def enable(self):
pass
def disable(self):
pass
class TestContextDecoratorTests(SimpleTestCase):
@mock.patch.object(DoNothingDecorator, 'disable')
def test_exception_in_setup(self, mock_disable):
"""An exception is setUp() is reraised after disable() is called."""
class ExceptionInSetUp(unittest.TestCase):
def setUp(self):
raise NotImplementedError('reraised')
decorator = DoNothingDecorator()
decorated_test_class = decorator.__call__(ExceptionInSetUp)()
self.assertFalse(mock_disable.called)
with self.assertRaisesMessage(NotImplementedError, 'reraised'):
decorated_test_class.setUp()
decorated_test_class.doCleanups()
self.assertTrue(mock_disable.called)
def test_cleanups_run_after_tearDown(self):
calls = []
class SaveCallsDecorator(TestContextDecorator):
def enable(self):
calls.append('enable')
def disable(self):
calls.append('disable')
class AddCleanupInSetUp(unittest.TestCase):
def setUp(self):
calls.append('setUp')
self.addCleanup(lambda: calls.append('cleanup'))
decorator = SaveCallsDecorator()
decorated_test_class = decorator.__call__(AddCleanupInSetUp)()
decorated_test_class.setUp()
decorated_test_class.tearDown()
decorated_test_class.doCleanups()
self.assertEqual(calls, ['enable', 'setUp', 'cleanup', 'disable'])
|
27b25aabe7720f1329b82278ebe03bc956a78e747f13f4f533d18fec1609feb9 | import datetime
from django import forms
from django.forms import CheckboxSelectMultiple
from django.test import override_settings
from .base import WidgetTest
class CheckboxSelectMultipleTest(WidgetTest):
widget = CheckboxSelectMultiple
def test_render_value(self):
self.check_html(self.widget(choices=self.beatles), 'beatles', ['J'], html="""
<div>
<div><label><input checked type="checkbox" name="beatles" value="J"> John</label></div>
<div><label><input type="checkbox" name="beatles" value="P"> Paul</label></div>
<div><label><input type="checkbox" name="beatles" value="G"> George</label></div>
<div><label><input type="checkbox" name="beatles" value="R"> Ringo</label></div>
</div>
""")
def test_render_value_multiple(self):
self.check_html(self.widget(choices=self.beatles), 'beatles', ['J', 'P'], html="""
<div>
<div><label><input checked type="checkbox" name="beatles" value="J"> John</label></div>
<div><label><input checked type="checkbox" name="beatles" value="P"> Paul</label></div>
<div><label><input type="checkbox" name="beatles" value="G"> George</label></div>
<div><label><input type="checkbox" name="beatles" value="R"> Ringo</label></div>
</div>
""")
def test_render_none(self):
"""
If the value is None, none of the options are selected, even if the
choices have an empty option.
"""
self.check_html(self.widget(choices=(('', 'Unknown'),) + self.beatles), 'beatles', None, html="""
<div>
<div><label><input type="checkbox" name="beatles" value=""> Unknown</label></div>
<div><label><input type="checkbox" name="beatles" value="J"> John</label></div>
<div><label><input type="checkbox" name="beatles" value="P"> Paul</label></div>
<div><label><input type="checkbox" name="beatles" value="G"> George</label></div>
<div><label><input type="checkbox" name="beatles" value="R"> Ringo</label></div>
</div>
""")
def test_nested_choices(self):
nested_choices = (
('unknown', 'Unknown'),
('Audio', (('vinyl', 'Vinyl'), ('cd', 'CD'))),
('Video', (('vhs', 'VHS'), ('dvd', 'DVD'))),
)
html = """
<div id="media">
<div> <label for="media_0">
<input type="checkbox" name="nestchoice" value="unknown" id="media_0"> Unknown</label></div>
<div>
<label>Audio</label>
<div> <label for="media_1_0">
<input checked type="checkbox" name="nestchoice" value="vinyl" id="media_1_0"> Vinyl</label></div>
<div> <label for="media_1_1">
<input type="checkbox" name="nestchoice" value="cd" id="media_1_1"> CD</label></div>
</div><div>
<label>Video</label>
<div> <label for="media_2_0">
<input type="checkbox" name="nestchoice" value="vhs" id="media_2_0"> VHS</label></div>
<div> <label for="media_2_1">
<input type="checkbox" name="nestchoice" value="dvd" id="media_2_1" checked> DVD</label></div>
</div>
</div>
"""
self.check_html(
self.widget(choices=nested_choices), 'nestchoice', ('vinyl', 'dvd'),
attrs={'id': 'media'}, html=html,
)
def test_nested_choices_without_id(self):
nested_choices = (
('unknown', 'Unknown'),
('Audio', (('vinyl', 'Vinyl'), ('cd', 'CD'))),
('Video', (('vhs', 'VHS'), ('dvd', 'DVD'))),
)
html = """
<div>
<div> <label><input type="checkbox" name="nestchoice" value="unknown"> Unknown</label></div>
<div>
<label>Audio</label>
<div> <label><input checked type="checkbox" name="nestchoice" value="vinyl"> Vinyl</label></div>
<div> <label><input type="checkbox" name="nestchoice" value="cd"> CD</label></div>
</div><div>
<label>Video</label>
<div> <label><input type="checkbox" name="nestchoice" value="vhs"> VHS</label></div>
<div> <label><input type="checkbox" name="nestchoice" value="dvd"checked> DVD</label></div>
</div>
</div>
"""
self.check_html(self.widget(choices=nested_choices), 'nestchoice', ('vinyl', 'dvd'), html=html)
def test_separate_ids(self):
"""
Each input gets a separate ID.
"""
choices = [('a', 'A'), ('b', 'B'), ('c', 'C')]
html = """
<div id="abc">
<div>
<label for="abc_0"><input checked type="checkbox" name="letters" value="a" id="abc_0"> A</label>
</div>
<div><label for="abc_1"><input type="checkbox" name="letters" value="b" id="abc_1"> B</label></div>
<div>
<label for="abc_2"><input checked type="checkbox" name="letters" value="c" id="abc_2"> C</label>
</div>
</div>
"""
self.check_html(self.widget(choices=choices), 'letters', ['a', 'c'], attrs={'id': 'abc'}, html=html)
def test_separate_ids_constructor(self):
"""
Each input gets a separate ID when the ID is passed to the constructor.
"""
widget = CheckboxSelectMultiple(attrs={'id': 'abc'}, choices=[('a', 'A'), ('b', 'B'), ('c', 'C')])
html = """
<div id="abc">
<div>
<label for="abc_0"><input checked type="checkbox" name="letters" value="a" id="abc_0"> A</label>
</div>
<div><label for="abc_1"><input type="checkbox" name="letters" value="b" id="abc_1"> B</label></div>
<div>
<label for="abc_2"><input checked type="checkbox" name="letters" value="c" id="abc_2"> C</label>
</div>
</div>
"""
self.check_html(widget, 'letters', ['a', 'c'], html=html)
@override_settings(USE_L10N=True, USE_THOUSAND_SEPARATOR=True)
def test_doesnt_localize_input_value(self):
choices = [
(1, 'One'),
(1000, 'One thousand'),
(1000000, 'One million'),
]
html = """
<div>
<div><label><input type="checkbox" name="numbers" value="1"> One</label></div>
<div><label><input type="checkbox" name="numbers" value="1000"> One thousand</label></div>
<div><label><input type="checkbox" name="numbers" value="1000000"> One million</label></div>
</div>
"""
self.check_html(self.widget(choices=choices), 'numbers', None, html=html)
choices = [
(datetime.time(0, 0), 'midnight'),
(datetime.time(12, 0), 'noon'),
]
html = """
<div>
<div><label><input type="checkbox" name="times" value="00:00:00"> midnight</label></div>
<div><label><input type="checkbox" name="times" value="12:00:00"> noon</label></div>
</div>
"""
self.check_html(self.widget(choices=choices), 'times', None, html=html)
def test_use_required_attribute(self):
widget = self.widget(choices=self.beatles)
# Always False because browser validation would require all checkboxes
# to be checked instead of at least one.
self.assertIs(widget.use_required_attribute(None), False)
self.assertIs(widget.use_required_attribute([]), False)
self.assertIs(widget.use_required_attribute(['J', 'P']), False)
def test_value_omitted_from_data(self):
widget = self.widget(choices=self.beatles)
self.assertIs(widget.value_omitted_from_data({}, {}, 'field'), False)
self.assertIs(widget.value_omitted_from_data({'field': 'value'}, {}, 'field'), False)
def test_label(self):
"""
CheckboxSelectMultiple doesn't contain 'for="field_0"' in the <label>
because clicking that would toggle the first checkbox.
"""
class TestForm(forms.Form):
f = forms.MultipleChoiceField(widget=CheckboxSelectMultiple)
bound_field = TestForm()['f']
self.assertEqual(bound_field.field.widget.id_for_label('id'), '')
self.assertEqual(bound_field.label_tag(), '<label>F:</label>')
|
c576dbefb3fe7ca0ca0b18e0b55f31aead6500ee90e650db78e8b542f215b3ed | import datetime
from django.forms import MultiWidget, RadioSelect
from django.test import override_settings
from .base import WidgetTest
class RadioSelectTest(WidgetTest):
widget = RadioSelect
def test_render(self):
choices = (('', '------'),) + self.beatles
self.check_html(self.widget(choices=choices), 'beatle', 'J', html="""
<div>
<div><label><input type="radio" name="beatle" value=""> ------</label></div>
<div><label><input checked type="radio" name="beatle" value="J"> John</label></div>
<div><label><input type="radio" name="beatle" value="P"> Paul</label></div>
<div><label><input type="radio" name="beatle" value="G"> George</label></div>
<div><label><input type="radio" name="beatle" value="R"> Ringo</label></div>
</div>
""")
def test_nested_choices(self):
nested_choices = (
('unknown', 'Unknown'),
('Audio', (('vinyl', 'Vinyl'), ('cd', 'CD'))),
('Video', (('vhs', 'VHS'), ('dvd', 'DVD'))),
)
html = """
<div id="media">
<div>
<label for="media_0"><input type="radio" name="nestchoice" value="unknown" id="media_0"> Unknown</label></div>
<div>
<label>Audio</label>
<div>
<label for="media_1_0"><input type="radio" name="nestchoice" value="vinyl" id="media_1_0"> Vinyl</label></div>
<div> <label for="media_1_1"><input type="radio" name="nestchoice" value="cd" id="media_1_1"> CD</label></div>
</div><div>
<label>Video</label>
<div>
<label for="media_2_0"><input type="radio" name="nestchoice" value="vhs" id="media_2_0"> VHS</label></div>
<div>
<label for="media_2_1"><input type="radio" name="nestchoice" value="dvd" id="media_2_1" checked> DVD</label>
</div>
</div>
</div>
"""
self.check_html(
self.widget(choices=nested_choices), 'nestchoice', 'dvd',
attrs={'id': 'media'}, html=html,
)
def test_constructor_attrs(self):
"""
Attributes provided at instantiation are passed to the constituent
inputs.
"""
widget = RadioSelect(attrs={'id': 'foo'}, choices=self.beatles)
html = """
<div id="foo">
<div>
<label for="foo_0"><input checked type="radio" id="foo_0" value="J" name="beatle"> John</label>
</div>
<div><label for="foo_1"><input type="radio" id="foo_1" value="P" name="beatle"> Paul</label></div>
<div><label for="foo_2"><input type="radio" id="foo_2" value="G" name="beatle"> George</label></div>
<div><label for="foo_3"><input type="radio" id="foo_3" value="R" name="beatle"> Ringo</label></div>
</div>
"""
self.check_html(widget, 'beatle', 'J', html=html)
def test_render_attrs(self):
"""
Attributes provided at render-time are passed to the constituent
inputs.
"""
html = """
<div id="bar">
<div>
<label for="bar_0"><input checked type="radio" id="bar_0" value="J" name="beatle"> John</label>
</div>
<div><label for="bar_1"><input type="radio" id="bar_1" value="P" name="beatle"> Paul</label></div>
<div><label for="bar_2"><input type="radio" id="bar_2" value="G" name="beatle"> George</label></div>
<div><label for="bar_3"><input type="radio" id="bar_3" value="R" name="beatle"> Ringo</label></div>
</div>
"""
self.check_html(self.widget(choices=self.beatles), 'beatle', 'J', attrs={'id': 'bar'}, html=html)
def test_class_attrs(self):
"""
The <div> in the multiple_input.html widget template include the class
attribute.
"""
html = """
<div class="bar">
<div><label><input checked type="radio" class="bar" value="J" name="beatle"> John</label></div>
<div><label><input type="radio" class="bar" value="P" name="beatle"> Paul</label></div>
<div><label><input type="radio" class="bar" value="G" name="beatle"> George</label></div>
<div><label><input type="radio" class="bar" value="R" name="beatle"> Ringo</label></div>
</div>
"""
self.check_html(self.widget(choices=self.beatles), 'beatle', 'J', attrs={'class': 'bar'}, html=html)
@override_settings(USE_L10N=True, USE_THOUSAND_SEPARATOR=True)
def test_doesnt_localize_input_value(self):
choices = [
(1, 'One'),
(1000, 'One thousand'),
(1000000, 'One million'),
]
html = """
<div>
<div><label><input type="radio" name="number" value="1"> One</label></div>
<div><label><input type="radio" name="number" value="1000"> One thousand</label></div>
<div><label><input type="radio" name="number" value="1000000"> One million</label></div>
</div>
"""
self.check_html(self.widget(choices=choices), 'number', None, html=html)
choices = [
(datetime.time(0, 0), 'midnight'),
(datetime.time(12, 0), 'noon'),
]
html = """
<div>
<div><label><input type="radio" name="time" value="00:00:00"> midnight</label></div>
<div><label><input type="radio" name="time" value="12:00:00"> noon</label></div>
</div>
"""
self.check_html(self.widget(choices=choices), 'time', None, html=html)
def test_render_as_subwidget(self):
"""A RadioSelect as a subwidget of MultiWidget."""
choices = (('', '------'),) + self.beatles
self.check_html(MultiWidget([self.widget(choices=choices)]), 'beatle', ['J'], html="""
<div>
<div><label><input type="radio" name="beatle_0" value=""> ------</label></div>
<div><label><input checked type="radio" name="beatle_0" value="J"> John</label></div>
<div><label><input type="radio" name="beatle_0" value="P"> Paul</label></div>
<div><label><input type="radio" name="beatle_0" value="G"> George</label></div>
<div><label><input type="radio" name="beatle_0" value="R"> Ringo</label></div>
</div>
""")
|
5b83e0e2ed37ca1292308f3292b3cd930921a5163c9787ecba671d54f936287d | from django.forms import (
CharField, ChoiceField, Form, IntegerField, RadioSelect, Select, TextInput,
)
from django.test import SimpleTestCase
from django.utils import translation
from django.utils.translation import gettext_lazy
class FormsI18nTests(SimpleTestCase):
def test_lazy_labels(self):
class SomeForm(Form):
username = CharField(max_length=10, label=gettext_lazy('username'))
f = SomeForm()
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">username:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
# Translations are done at rendering time, so multi-lingual apps can define forms)
with translation.override('de'):
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">Benutzername:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
with translation.override('pl'):
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">u\u017cytkownik:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
def test_non_ascii_label(self):
class SomeForm(Form):
field_1 = CharField(max_length=10, label=gettext_lazy('field_1'))
field_2 = CharField(
max_length=10,
label=gettext_lazy('field_2'),
widget=TextInput(attrs={'id': 'field_2_id'}),
)
f = SomeForm()
self.assertHTMLEqual(f['field_1'].label_tag(), '<label for="id_field_1">field_1:</label>')
self.assertHTMLEqual(f['field_2'].label_tag(), '<label for="field_2_id">field_2:</label>')
def test_non_ascii_choices(self):
class SomeForm(Form):
somechoice = ChoiceField(
choices=(('\xc5', 'En tied\xe4'), ('\xf8', 'Mies'), ('\xdf', 'Nainen')),
widget=RadioSelect(),
label='\xc5\xf8\xdf',
)
f = SomeForm()
self.assertHTMLEqual(
f.as_p(),
'<p><label>\xc5\xf8\xdf:</label>'
'<div id="id_somechoice">\n'
'<div><label for="id_somechoice_0">'
'<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
'En tied\xe4</label></div>\n'
'<div><label for="id_somechoice_1">'
'<input type="radio" id="id_somechoice_1" value="\xf8" name="somechoice" required> '
'Mies</label></div>\n<div><label for="id_somechoice_2">'
'<input type="radio" id="id_somechoice_2" value="\xdf" name="somechoice" required> '
'Nainen</label></div>\n</div></p>'
)
# Translated error messages
with translation.override('ru'):
f = SomeForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist"><li>'
'\u041e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c'
'\u043d\u043e\u0435 \u043f\u043e\u043b\u0435.</li></ul>\n'
'<p><label>\xc5\xf8\xdf:</label>'
' <div id="id_somechoice">\n<div><label for="id_somechoice_0">'
'<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
'En tied\xe4</label></div>\n'
'<div><label for="id_somechoice_1">'
'<input type="radio" id="id_somechoice_1" value="\xf8" name="somechoice" required> '
'Mies</label></div>\n<div><label for="id_somechoice_2">'
'<input type="radio" id="id_somechoice_2" value="\xdf" name="somechoice" required> '
'Nainen</label></div>\n</div></p>'
)
def test_select_translated_text(self):
# Deep copying translated text shouldn't raise an error.
class CopyForm(Form):
degree = IntegerField(widget=Select(choices=((1, gettext_lazy('test')),)))
CopyForm()
|
514172cdf915b425d75bc81a6aa4d83b5c95c8b4c8681284ad88ecbc806877e2 | import copy
import datetime
import json
import uuid
from django.core.exceptions import NON_FIELD_ERRORS
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.validators import MaxValueValidator, RegexValidator
from django.forms import (
BooleanField, CharField, CheckboxSelectMultiple, ChoiceField, DateField,
DateTimeField, EmailField, FileField, FileInput, FloatField, Form,
HiddenInput, ImageField, IntegerField, MultipleChoiceField,
MultipleHiddenInput, MultiValueField, MultiWidget, NullBooleanField,
PasswordInput, RadioSelect, Select, SplitDateTimeField,
SplitHiddenDateTimeWidget, Textarea, TextInput, TimeField, ValidationError,
forms,
)
from django.forms.renderers import DjangoTemplates, get_default_renderer
from django.forms.utils import ErrorList
from django.http import QueryDict
from django.template import Context, Template
from django.test import SimpleTestCase
from django.utils.datastructures import MultiValueDict
from django.utils.safestring import mark_safe
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class PersonNew(Form):
first_name = CharField(widget=TextInput(attrs={'id': 'first_name_id'}))
last_name = CharField()
birthday = DateField()
class MultiValueDictLike(dict):
def getlist(self, key):
return [self[key]]
class FormsTestCase(SimpleTestCase):
# A Form is a collection of Fields. It knows how to validate a set of data and it
# knows how to render itself in a couple of default ways (e.g., an HTML table).
# You can pass it data in __init__(), as a dictionary.
def test_form(self):
# Pass a dictionary to a Form's __init__().
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertHTMLEqual(p.errors.as_ul(), '')
self.assertEqual(p.errors.as_text(), '')
self.assertEqual(p.cleaned_data["first_name"], 'John')
self.assertEqual(p.cleaned_data["last_name"], 'Lennon')
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" value="John" id="id_first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="last_name" value="Lennon" id="id_last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>'
)
msg = "Key 'nonexistentfield' not found in 'Person'. Choices are: birthday, first_name, last_name."
with self.assertRaisesMessage(KeyError, msg):
p['nonexistentfield']
form_output = []
for boundfield in p:
form_output.append(str(boundfield))
self.assertHTMLEqual(
'\n'.join(form_output),
"""<input type="text" name="first_name" value="John" id="id_first_name" required>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>"""
)
form_output = []
for boundfield in p:
form_output.append([boundfield.label, boundfield.data])
self.assertEqual(form_output, [
['First name', 'John'],
['Last name', 'Lennon'],
['Birthday', '1940-10-9']
])
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>"""
)
def test_empty_dict(self):
# Empty dictionaries are valid, too.
p = Person({})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {})
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_empty_querydict_args(self):
data = QueryDict()
files = QueryDict()
p = Person(data, files)
self.assertIs(p.data, data)
self.assertIs(p.files, files)
def test_unbound_form(self):
# If you don't pass any values to the Form's __init__(), or if you pass None,
# the Form will be considered unbound and won't do any validation. Form.errors
# will be an empty dictionary *but* Form.is_valid() will return False.
p = Person()
self.assertFalse(p.is_bound)
self.assertEqual(p.errors, {})
self.assertFalse(p.is_valid())
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_unicode_values(self):
# Unicode values are handled properly.
p = Person({
'first_name': 'John',
'last_name': '\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111',
'birthday': '1940-10-9'
})
self.assertHTMLEqual(
p.as_table(),
'<tr><th><label for="id_first_name">First name:</label></th><td>'
'<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>\n'
'<tr><th><label for="id_last_name">Last name:</label>'
'</th><td><input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111"'
'id="id_last_name" required></td></tr>\n'
'<tr><th><label for="id_birthday">Birthday:</label></th><td>'
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>'
)
self.assertHTMLEqual(
p.as_ul(),
'<li><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></li>\n'
'<li><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></li>\n'
'<li><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></li>'
)
self.assertHTMLEqual(
p.as_p(),
'<p><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></p>\n'
'<p><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></p>\n'
'<p><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></p>'
)
p = Person({'last_name': 'Lennon'})
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(
p.errors,
{'birthday': ['This field is required.'], 'first_name': ['This field is required.']}
)
self.assertEqual(p.cleaned_data, {'last_name': 'Lennon'})
self.assertEqual(p['first_name'].errors, ['This field is required.'])
self.assertHTMLEqual(
p['first_name'].errors.as_ul(),
'<ul class="errorlist"><li>This field is required.</li></ul>'
)
self.assertEqual(p['first_name'].errors.as_text(), '* This field is required.')
p = Person()
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" id="id_first_name" required>',
)
self.assertHTMLEqual(str(p['last_name']), '<input type="text" name="last_name" id="id_last_name" required>')
self.assertHTMLEqual(str(p['birthday']), '<input type="text" name="birthday" id="id_birthday" required>')
def test_cleaned_data_only_fields(self):
# cleaned_data will always *only* contain a key for fields defined in the
# Form, even if you pass extra data when you define the Form. In this
# example, we pass a bunch of extra fields to the form constructor,
# but cleaned_data contains only the form's fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9',
'extra1': 'hello',
'extra2': 'hello',
}
p = Person(data)
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_optional_data(self):
# cleaned_data will include a key and value for *all* fields defined in the Form,
# even if the Form's data didn't include a value for fields that are not
# required. In this example, the data dictionary doesn't include a value for the
# "nick_name" field, but cleaned_data includes it. For CharFields, it's set to the
# empty string.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
nick_name = CharField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['nick_name'], '')
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
# For DateFields, it's set to None.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
birth_date = DateField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertIsNone(f.cleaned_data['birth_date'])
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
def test_auto_id(self):
# "auto_id" tells the Form to add an "id" attribute to each form element.
# If it's a string that contains '%s', Django will use that as a format string
# into which the field's name will be inserted. It will also put a <label> around
# the human-readable labels for a field.
p = Person(auto_id='%s_id')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="first_name_id">First name:</label></th><td>
<input type="text" name="first_name" id="first_name_id" required></td></tr>
<tr><th><label for="last_name_id">Last name:</label></th><td>
<input type="text" name="last_name" id="last_name_id" required></td></tr>
<tr><th><label for="birthday_id">Birthday:</label></th><td>
<input type="text" name="birthday" id="birthday_id" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></li>
<li><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></li>
<li><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></p>
<p><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></p>
<p><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></p>"""
)
def test_auto_id_true(self):
# If auto_id is any True value whose str() does not contain '%s', the "id"
# attribute will be the name of the field.
p = Person(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name">First name:</label>
<input type="text" name="first_name" id="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_auto_id_false(self):
# If auto_id is any False value, an "id" attribute won't be output unless it
# was manually entered.
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_id_on_field(self):
# In this example, auto_id is False, but the "id" attribute for the "first_name"
# field is given. Also note that field gets a <label>, while the others don't.
p = PersonNew(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_auto_id_on_form_and_field(self):
# If the "id" attribute is specified in the Form and auto_id is True, the "id"
# attribute in the Form gets precedence.
p = PersonNew(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_various_boolean_values(self):
class SignupForm(Form):
email = EmailField()
get_spam = BooleanField()
f = SignupForm(auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" required>')
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': True}, auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" value="[email protected]" required>')
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
# 'True' or 'true' should be rendered without a value attribute
f = SignupForm({'email': '[email protected]', 'get_spam': 'True'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
f = SignupForm({'email': '[email protected]', 'get_spam': 'true'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']), '<input checked type="checkbox" name="get_spam" required>')
# A value of 'False' or 'false' should be rendered unchecked
f = SignupForm({'email': '[email protected]', 'get_spam': 'False'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': 'false'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
# A value of '0' should be interpreted as a True value (#16820)
f = SignupForm({'email': '[email protected]', 'get_spam': '0'})
self.assertTrue(f.is_valid())
self.assertTrue(f.cleaned_data.get('get_spam'))
def test_widget_output(self):
# Any Field can have a Widget class passed to its constructor:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea)
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['subject']), '<input type="text" name="subject" required>')
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="10" cols="40" required></textarea>')
# as_textarea(), as_text() and as_hidden() are shortcuts for changing the output
# widget type:
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea name="subject" rows="10" cols="40" required></textarea>',
)
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message">')
# The 'widget' parameter to a Field can also be an instance:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="80" cols="20" required></textarea>')
# Instance-level attrs are *not* carried over to as_textarea(), as_text() and
# as_hidden():
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
f = ContactForm({'subject': 'Hello', 'message': 'I love you.'}, auto_id=False)
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea rows="10" cols="40" name="subject" required>Hello</textarea>'
)
self.assertHTMLEqual(
f['message'].as_text(),
'<input type="text" name="message" value="I love you." required>',
)
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message" value="I love you.">')
def test_forms_with_choices(self):
# For a form with a <select>, use ChoiceField:
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# A subtlety: If one of the choices' value is the empty string and the form is
# unbound, then the <option> for the empty-string choice will get selected.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('', '------'), ('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language" required>
<option value="" selected>------</option>
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
# You can specify widget attributes in the Widget constructor.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=Select(attrs={'class': 'foo'}))
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# When passing a custom widget instance to ChoiceField, note that setting
# 'choices' on the widget is meaningless. The widget will use the choices
# defined on the Field, not the ones defined on the Widget.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[('P', 'Python'), ('J', 'Java')],
widget=Select(choices=[('R', 'Ruby'), ('P', 'Perl')], attrs={'class': 'foo'}),
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# You can set a ChoiceField's choices after the fact.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField()
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
</select>""")
f.fields['language'].choices = [('P', 'Python'), ('J', 'Java')]
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
def test_forms_with_radio(self):
# Add widget=RadioSelect to use that widget with a ChoiceField.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=RadioSelect)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div>""")
self.assertHTMLEqual(f.as_table(), """<tr><th>Name:</th><td><input type="text" name="name" required></td></tr>
<tr><th>Language:</th><td><div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></td></tr>""")
self.assertHTMLEqual(f.as_ul(), """<li>Name: <input type="text" name="name" required></li>
<li>Language: <div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></li>""")
# Regarding auto_id and <label>, RadioSelect is a special case. Each radio button
# gets a distinct ID, formed by appending an underscore plus the button's
# zero-based index.
f = FrameworkForm(auto_id='id_%s')
self.assertHTMLEqual(
str(f['language']),
"""<div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div>"""
)
# When RadioSelect is used with auto_id, and the whole form is printed
# using either as_table() or as_ul(), the label for the RadioSelect
# will **not** point to the ID of the *first* radio button to improve
# accessibility for screen reader users.
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><label for="id_name">Name:</label></th><td><input type="text" name="name" id="id_name" required></td></tr>
<tr><th><label>Language:</label></th><td><div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></li>"""
)
self.assertHTMLEqual(
f.as_p(),
"""<p><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></p>
<p><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></p>"""
)
# Test iterating on individual radios in a template
t = Template('{% for radio in form.language %}<div class="myradio">{{ radio }}</div>{% endfor %}')
self.assertHTMLEqual(
t.render(Context({'form': f})),
"""<div class="myradio"><label for="id_language_0">
<input id="id_language_0" name="language" type="radio" value="P" required> Python</label></div>
<div class="myradio"><label for="id_language_1">
<input id="id_language_1" name="language" type="radio" value="J" required> Java</label></div>"""
)
def test_form_with_iterable_boundfield(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm(auto_id=False)
self.assertHTMLEqual(
'\n'.join(str(bf) for bf in f['name']),
"""<label><input type="radio" name="name" value="john" required> John</label>
<label><input type="radio" name="name" value="paul" required> Paul</label>
<label><input type="radio" name="name" value="george" required> George</label>
<label><input type="radio" name="name" value="ringo" required> Ringo</label>"""
)
self.assertHTMLEqual(
'\n'.join('<div>%s</div>' % bf for bf in f['name']),
"""<div><label><input type="radio" name="name" value="john" required> John</label></div>
<div><label><input type="radio" name="name" value="paul" required> Paul</label></div>
<div><label><input type="radio" name="name" value="george" required> George</label></div>
<div><label><input type="radio" name="name" value="ringo" required> Ringo</label></div>"""
)
def test_form_with_iterable_boundfield_id(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
fields = list(BeatleForm()['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, 'id_name_0')
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(
fields[0].tag(),
'<input type="radio" name="name" value="john" id="id_name_0" required>'
)
self.assertHTMLEqual(
str(fields[0]),
'<label for="id_name_0"><input type="radio" name="name" '
'value="john" id="id_name_0" required> John</label>'
)
self.assertEqual(fields[1].id_for_label, 'id_name_1')
self.assertEqual(fields[1].choice_label, 'Paul')
self.assertHTMLEqual(
fields[1].tag(),
'<input type="radio" name="name" value="paul" id="id_name_1" required>'
)
self.assertHTMLEqual(
str(fields[1]),
'<label for="id_name_1"><input type="radio" name="name" '
'value="paul" id="id_name_1" required> Paul</label>'
)
def test_iterable_boundfield_select(self):
class BeatleForm(Form):
name = ChoiceField(choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')])
fields = list(BeatleForm(auto_id=False)['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, None)
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(fields[0].tag(), '<option value="john">John</option>')
self.assertHTMLEqual(str(fields[0]), '<option value="john">John</option>')
def test_form_with_noniterable_boundfield(self):
# You can iterate over any BoundField, not just those with widget=RadioSelect.
class BeatleForm(Form):
name = CharField()
f = BeatleForm(auto_id=False)
self.assertHTMLEqual('\n'.join(str(bf) for bf in f['name']), '<input type="text" name="name" required>')
def test_boundfield_slice(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm()
bf = f['name']
self.assertEqual(
[str(item) for item in bf[1:]],
[str(bf[1]), str(bf[2]), str(bf[3])],
)
def test_boundfield_invalid_index(self):
class TestForm(Form):
name = ChoiceField(choices=[])
field = TestForm()['name']
msg = 'BoundField indices must be integers or slices, not str.'
with self.assertRaisesMessage(TypeError, msg):
field['foo']
def test_boundfield_bool(self):
"""BoundField without any choices (subwidgets) evaluates to True."""
class TestForm(Form):
name = ChoiceField(choices=[])
self.assertIs(bool(TestForm()['name']), True)
def test_forms_with_multiple_choice(self):
# MultipleChoiceField is a special case, as its data is required to be a list:
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField()
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
</select>""")
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P">Paul McCartney</option>
</select>""")
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(str(f['name']), '<input type="text" name="name" value="Yesterday" required>')
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P" selected>Paul McCartney</option>
</select>""")
def test_form_with_disabled_fields(self):
class PersonForm(Form):
name = CharField()
birthday = DateField(disabled=True)
class PersonFormFieldInitial(Form):
name = CharField()
birthday = DateField(disabled=True, initial=datetime.date(1974, 8, 16))
# Disabled fields are generally not transmitted by user agents.
# The value from the form's initial data is used.
f1 = PersonForm({'name': 'John Doe'}, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial({'name': 'John Doe'})
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Values provided in the form's data are ignored.
data = {'name': 'John Doe', 'birthday': '1984-11-10'}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Initial data remains present on invalid forms.
data = {}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertFalse(form.is_valid())
self.assertEqual(form['birthday'].value(), datetime.date(1974, 8, 16))
def test_hidden_data(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
# MultipleChoiceField rendered as_hidden() is a special case. Because it can
# have multiple values, its as_hidden() renders multiple <input type="hidden">
# tags.
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), '<input type="hidden" name="composers" value="P">')
f = SongForm({'name': 'From Me To You', 'composers': ['P', 'J']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), """<input type="hidden" name="composers" value="P">
<input type="hidden" name="composers" value="J">""")
# DateTimeField rendered as_hidden() is special too
class MessageForm(Form):
when = SplitDateTimeField()
f = MessageForm({'when_0': '1992-01-01', 'when_1': '01:01'})
self.assertTrue(f.is_valid())
self.assertHTMLEqual(
str(f['when']),
'<input type="text" name="when_0" value="1992-01-01" id="id_when_0" required>'
'<input type="text" name="when_1" value="01:01" id="id_when_1" required>'
)
self.assertHTMLEqual(
f['when'].as_hidden(),
'<input type="hidden" name="when_0" value="1992-01-01" id="id_when_0">'
'<input type="hidden" name="when_1" value="01:01" id="id_when_1">'
)
def test_multiple_choice_checkbox(self):
# MultipleChoiceField can also be used with the CheckboxSelectMultiple widget.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J', 'P']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input checked type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
# Test iterating on individual checkboxes in a template
t = Template('{% for checkbox in form.composers %}<div class="mycheckbox">{{ checkbox }}</div>{% endfor %}')
self.assertHTMLEqual(t.render(Context({'form': f})), """<div class="mycheckbox"><label>
<input checked name="composers" type="checkbox" value="J"> John Lennon</label></div>
<div class="mycheckbox"><label>
<input checked name="composers" type="checkbox" value="P"> Paul McCartney</label></div>""")
def test_checkbox_auto_id(self):
# Regarding auto_id, CheckboxSelectMultiple is a special case. Each checkbox
# gets a distinct ID, formed by appending an underscore plus the checkbox's
# zero-based index.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
f = SongForm(auto_id='%s_id')
self.assertHTMLEqual(
str(f['composers']),
"""<div id="composers_id">
<div><label for="composers_id_0">
<input type="checkbox" name="composers" value="J" id="composers_id_0"> John Lennon</label></div>
<div><label for="composers_id_1">
<input type="checkbox" name="composers" value="P" id="composers_id_1"> Paul McCartney</label></div>
</div>"""
)
def test_multiple_choice_list_data(self):
# Data for a MultipleChoiceField should be a list. QueryDict and
# MultiValueDict conveniently work with this.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
data = {'name': 'Yesterday', 'composers': ['J', 'P']}
f = SongForm(data)
self.assertEqual(f.errors, {})
data = QueryDict('name=Yesterday&composers=J&composers=P')
f = SongForm(data)
self.assertEqual(f.errors, {})
data = MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']})
f = SongForm(data)
self.assertEqual(f.errors, {})
# SelectMultiple uses ducktyping so that MultiValueDictLike.getlist()
# is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_multiple_hidden(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
# The MultipleHiddenInput widget renders multiple values as hidden fields.
class SongFormHidden(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=MultipleHiddenInput,
)
f = SongFormHidden(MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']}), auto_id=False)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Name: <input type="text" name="name" value="Yesterday" required>
<input type="hidden" name="composers" value="J">
<input type="hidden" name="composers" value="P"></li>"""
)
# When using CheckboxSelectMultiple, the framework expects a list of input and
# returns a list of input.
f = SongForm({'name': 'Yesterday'}, auto_id=False)
self.assertEqual(f.errors['composers'], ['This field is required.'])
f = SongForm({'name': 'Yesterday', 'composers': ['J']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
f = SongForm({'name': 'Yesterday', 'composers': ['J', 'P']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J', 'P'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
# MultipleHiddenInput uses ducktyping so that
# MultiValueDictLike.getlist() is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_escaping(self):
# Validation errors are HTML-escaped when output as HTML.
class EscapingForm(Form):
special_name = CharField(label="<em>Special</em> Field")
special_safe_name = CharField(label=mark_safe("<em>Special</em> Field"))
def clean_special_name(self):
raise ValidationError("Something's wrong with '%s'" % self.cleaned_data['special_name'])
def clean_special_safe_name(self):
raise ValidationError(
mark_safe("'<b>%s</b>' is a safe string" % self.cleaned_data['special_safe_name'])
)
f = EscapingForm({
'special_name':
"Nothing to escape",
'special_safe_name': "Nothing to escape",
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Nothing to escape'</li></ul>
<input type="text" name="special_name" value="Nothing to escape" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b>Nothing to escape</b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="Nothing to escape" required></td></tr>"""
)
f = EscapingForm({
'special_name': "Should escape < & > and <script>alert('xss')</script>",
'special_safe_name': "<i>Do not escape</i>"
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Should escape < & > and
<script>alert('xss')</script>'</li></ul>
<input type="text" name="special_name"
value="Should escape < & > and <script>alert('xss')</script>" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b><i>Do not escape</i></b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="<i>Do not escape</i>" required></td></tr>"""
)
def test_validating_multiple_fields(self):
# There are a couple of ways to do multiple-field validation. If you want the
# validation message to be associated with a particular field, implement the
# clean_XXX() method on the Form, where XXX is the field name. As in
# Field.clean(), the clean_XXX() method should return the cleaned value. In the
# clean_XXX() method, you have access to self.cleaned_data, which is a dictionary
# of all the data that has been cleaned *so far*, in order by the fields,
# including the current field (e.g., the field XXX if you're in clean_XXX()).
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean_password2(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data['password2']
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['password2'], ['Please make sure your passwords match.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
# Another way of doing multiple-field validation is by implementing the
# Form's clean() method. Usually ValidationError raised by that method
# will not be associated with a particular field and will have a
# special-case association with the field named '__all__'. It's
# possible to associate the errors to particular field with the
# Form.add_error() method or by passing a dictionary that maps each
# field to one or more errors.
#
# Note that in Form.clean(), you have access to self.cleaned_data, a
# dictionary of all the fields/values that have *not* raised a
# ValidationError. Also note Form.clean() is required to return a
# dictionary of all clean data.
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
# Test raising a ValidationError as NON_FIELD_ERRORS.
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
# Test raising ValidationError that targets multiple fields.
errors = {}
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE':
errors['password1'] = 'Forbidden value.'
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE':
errors['password2'] = ['Forbidden value.']
if errors:
raise ValidationError(errors)
# Test Form.add_error()
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE2':
self.add_error(None, 'Non-field error 1.')
self.add_error('password1', 'Forbidden value 2.')
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE2':
self.add_error('password2', 'Forbidden value 2.')
raise ValidationError('Non-field error 2.')
return self.cleaned_data
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th>Username:</th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="username" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password2" required></td></tr>"""
)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Please make sure your passwords match.'])
self.assertHTMLEqual(
f.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>Please make sure your passwords match.</li></ul></td></tr>
<tr><th>Username:</th><td><input type="text" name="username" value="adrian" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><input type="password" name="password2" required></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>Please make sure your passwords match.</li></ul></li>
<li>Username: <input type="text" name="username" value="adrian" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Password2: <input type="password" name="password2" required></li>"""
)
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE',
'password2': 'FORBIDDEN_VALUE',
}, auto_id=False)
self.assertEqual(f.errors['password1'], ['Forbidden value.'])
self.assertEqual(f.errors['password2'], ['Forbidden value.'])
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE2',
'password2': 'FORBIDDEN_VALUE2',
}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Non-field error 1.', 'Non-field error 2.'])
self.assertEqual(f.errors['password1'], ['Forbidden value 2.'])
self.assertEqual(f.errors['password2'], ['Forbidden value 2.'])
with self.assertRaisesMessage(ValueError, "has no field named"):
f.add_error('missing_field', 'Some error.')
def test_update_error_dict(self):
class CodeForm(Form):
code = CharField(max_length=10)
def clean(self):
try:
raise ValidationError({'code': [ValidationError('Code error 1.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': [ValidationError('Code error 2.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': forms.ErrorList(['Code error 3.'])})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError('Non-field error 1.')
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError([ValidationError('Non-field error 2.')])
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
# The newly added list of errors is an instance of ErrorList.
for field, error_list in self._errors.items():
if not isinstance(error_list, self.error_class):
self._errors[field] = self.error_class(error_list)
form = CodeForm({'code': 'hello'})
# Trigger validation.
self.assertFalse(form.is_valid())
# update_error_dict didn't lose track of the ErrorDict type.
self.assertIsInstance(form._errors, forms.ErrorDict)
self.assertEqual(dict(form.errors), {
'code': ['Code error 1.', 'Code error 2.', 'Code error 3.'],
NON_FIELD_ERRORS: ['Non-field error 1.', 'Non-field error 2.'],
})
def test_has_error(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput, min_length=5)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError(
'Please make sure your passwords match.',
code='password_mismatch',
)
f = UserRegistration(data={})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'required'))
self.assertFalse(f.has_error('password1', 'anything'))
f = UserRegistration(data={'password1': 'Hi', 'password2': 'Hi'})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'min_length'))
self.assertFalse(f.has_error('password1', 'anything'))
self.assertFalse(f.has_error('password2'))
self.assertFalse(f.has_error('password2', 'anything'))
f = UserRegistration(data={'password1': 'Bonjour', 'password2': 'Hello'})
self.assertFalse(f.has_error('password1'))
self.assertFalse(f.has_error('password1', 'required'))
self.assertTrue(f.has_error(NON_FIELD_ERRORS))
self.assertTrue(f.has_error(NON_FIELD_ERRORS, 'password_mismatch'))
self.assertFalse(f.has_error(NON_FIELD_ERRORS, 'anything'))
def test_html_output_with_hidden_input_field_errors(self):
class TestForm(Form):
hidden_input = CharField(widget=HiddenInput)
def clean(self):
self.add_error(None, 'Form error')
f = TestForm(data={})
error_dict = {
'hidden_input': ['This field is required.'],
'__all__': ['Form error'],
}
self.assertEqual(f.errors, error_dict)
f.as_table()
self.assertEqual(f.errors, error_dict)
def test_dynamic_construction(self):
# It's possible to construct a Form dynamically by adding to the self.fields
# dictionary in __init__(). Don't forget to call Form.__init__() within the
# subclass' __init__().
class Person(Form):
first_name = CharField()
last_name = CharField()
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['birthday'] = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" required></td></tr>"""
)
# Instances of a dynamic Form do not persist fields from one Form instance to
# the next.
class MyForm(Form):
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
class MyForm(Form):
default_field_1 = CharField()
default_field_2 = CharField()
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
# Similarly, changes to field attributes do not persist from one Form instance
# to the next.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
def __init__(self, names_required=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if names_required:
self.fields['first_name'].required = True
self.fields['first_name'].widget.attrs['class'] = 'required'
self.fields['last_name'].required = True
self.fields['last_name'].widget.attrs['class'] = 'required'
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
f = Person(names_required=True)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (True, True))
self.assertEqual(
f['first_name'].field.widget.attrs,
f['last_name'].field.widget.attrs,
({'class': 'reuired'}, {'class': 'required'})
)
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
class Person(Form):
first_name = CharField(max_length=30)
last_name = CharField(max_length=30)
def __init__(self, name_max_length=None, *args, **kwargs):
super().__init__(*args, **kwargs)
if name_max_length:
self.fields['first_name'].max_length = name_max_length
self.fields['last_name'].max_length = name_max_length
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
f = Person(name_max_length=20)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (20, 20))
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
# Similarly, choices do not persist from one Form instance to the next.
# Refs #15127.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
gender = ChoiceField(choices=(('f', 'Female'), ('m', 'Male')))
def __init__(self, allow_unspec_gender=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if allow_unspec_gender:
self.fields['gender'].choices += (('u', 'Unspecified'),)
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
f = Person(allow_unspec_gender=True)
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male'), ('u', 'Unspecified')])
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
def test_validators_independence(self):
"""
The list of form field validators can be modified without polluting
other forms.
"""
class MyForm(Form):
myfield = CharField(max_length=25)
f1 = MyForm()
f2 = MyForm()
f1.fields['myfield'].validators[0] = MaxValueValidator(12)
self.assertNotEqual(f1.fields['myfield'].validators[0], f2.fields['myfield'].validators[0])
def test_hidden_widget(self):
# HiddenInput widgets are displayed differently in the as_table(), as_ul())
# and as_p() output of a Form -- their verbose names are not displayed, and a
# separate row is not displayed. They're displayed in the last row of the
# form, directly after that row's form element.
class Person(Form):
first_name = CharField()
last_name = CharField()
hidden_text = CharField(widget=HiddenInput)
birthday = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th>
<td><input type="text" name="birthday" required><input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(), """<p>First name: <input type="text" name="first_name" required></p>
<p>Last name: <input type="text" name="last_name" required></p>
<p>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></p>"""
)
# With auto_id set, a HiddenInput still gets an ID, but it doesn't get a label.
p = Person(auto_id='id_%s')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></p>"""
)
# If a field with a HiddenInput has errors, the as_table() and as_ul() output
# will include the error message(s) with the text "(Hidden field [fieldname]) "
# prepended. This message is displayed at the top of the output, regardless of
# its field's order in the form.
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'}, auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></td></tr>
<tr><th>First name:</th><td><input type="text" name="first_name" value="John" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" value="Lennon" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></li>
<li>First name: <input type="text" name="first_name" value="John" required></li>
<li>Last name: <input type="text" name="last_name" value="Lennon" required></li>
<li>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul>
<p>First name: <input type="text" name="first_name" value="John" required></p>
<p>Last name: <input type="text" name="last_name" value="Lennon" required></p>
<p>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></p>"""
)
# A corner case: It's possible for a form to have only HiddenInputs.
class TestForm(Form):
foo = CharField(widget=HiddenInput)
bar = CharField(widget=HiddenInput)
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_ul(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_p(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
def test_field_order(self):
# A Form's fields are displayed in the same order in which they were defined.
class TestForm(Form):
field1 = CharField()
field2 = CharField()
field3 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field7 = CharField()
field8 = CharField()
field9 = CharField()
field10 = CharField()
field11 = CharField()
field12 = CharField()
field13 = CharField()
field14 = CharField()
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), """<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>
<tr><th>Field5:</th><td><input type="text" name="field5" required></td></tr>
<tr><th>Field6:</th><td><input type="text" name="field6" required></td></tr>
<tr><th>Field7:</th><td><input type="text" name="field7" required></td></tr>
<tr><th>Field8:</th><td><input type="text" name="field8" required></td></tr>
<tr><th>Field9:</th><td><input type="text" name="field9" required></td></tr>
<tr><th>Field10:</th><td><input type="text" name="field10" required></td></tr>
<tr><th>Field11:</th><td><input type="text" name="field11" required></td></tr>
<tr><th>Field12:</th><td><input type="text" name="field12" required></td></tr>
<tr><th>Field13:</th><td><input type="text" name="field13" required></td></tr>
<tr><th>Field14:</th><td><input type="text" name="field14" required></td></tr>""")
def test_explicit_field_order(self):
class TestFormParent(Form):
field1 = CharField()
field2 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field_order = ['field6', 'field5', 'field4', 'field2', 'field1']
class TestForm(TestFormParent):
field3 = CharField()
field_order = ['field2', 'field4', 'field3', 'field5', 'field6']
class TestFormRemove(TestForm):
field1 = None
class TestFormMissing(TestForm):
field_order = ['field2', 'field4', 'field3', 'field5', 'field6', 'field1']
field1 = None
class TestFormInit(TestFormParent):
field3 = CharField()
field_order = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.order_fields(field_order=TestForm.field_order)
p = TestFormParent()
self.assertEqual(list(p.fields), TestFormParent.field_order)
p = TestFormRemove()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestFormMissing()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestForm()
self.assertEqual(list(p.fields), TestFormMissing.field_order)
p = TestFormInit()
order = [*TestForm.field_order, 'field1']
self.assertEqual(list(p.fields), order)
TestForm.field_order = ['unknown']
p = TestForm()
self.assertEqual(list(p.fields), ['field1', 'field2', 'field4', 'field5', 'field6', 'field3'])
def test_form_html_attributes(self):
# Some Field classes have an effect on the HTML attributes of their associated
# Widget. If you set max_length in a CharField and its associated widget is
# either a TextInput or PasswordInput, then the widget's rendered HTML will
# include the "maxlength" attribute.
class UserRegistration(Form):
username = CharField(max_length=10) # uses TextInput by default
password = CharField(max_length=10, widget=PasswordInput)
realname = CharField(max_length=10, widget=TextInput) # redundantly define widget, just to test
address = CharField() # no max_length defined here
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>
<li>Realname: <input type="text" name="realname" maxlength="10" required></li>
<li>Address: <input type="text" name="address" required></li>"""
)
# If you specify a custom "attrs" that includes the "maxlength" attribute,
# the Field's max_length attribute will override whatever "maxlength" you specify
# in "attrs".
class UserRegistration(Form):
username = CharField(max_length=10, widget=TextInput(attrs={'maxlength': 20}))
password = CharField(max_length=10, widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>"""
)
def test_specifying_labels(self):
# You can specify the label for a field by using the 'label' argument to a Field
# class. If you don't specify 'label', Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
class UserRegistration(Form):
username = CharField(max_length=10, label='Your username')
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput, label='Contraseña (de nuevo)')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Your username: <input type="text" name="username" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Contraseña (de nuevo): <input type="password" name="password2" required></li>"""
)
# Labels for as_* methods will only end in a colon if they don't end in other
# punctuation already.
class Questions(Form):
q1 = CharField(label='The first question')
q2 = CharField(label='What is your name?')
q3 = CharField(label='The answer to life is:')
q4 = CharField(label='Answer this question!')
q5 = CharField(label='The last question. Period.')
self.assertHTMLEqual(
Questions(auto_id=False).as_p(),
"""<p>The first question: <input type="text" name="q1" required></p>
<p>What is your name? <input type="text" name="q2" required></p>
<p>The answer to life is: <input type="text" name="q3" required></p>
<p>Answer this question! <input type="text" name="q4" required></p>
<p>The last question. Period. <input type="text" name="q5" required></p>"""
)
self.assertHTMLEqual(
Questions().as_p(),
"""<p><label for="id_q1">The first question:</label> <input type="text" name="q1" id="id_q1" required></p>
<p><label for="id_q2">What is your name?</label> <input type="text" name="q2" id="id_q2" required></p>
<p><label for="id_q3">The answer to life is:</label> <input type="text" name="q3" id="id_q3" required></p>
<p><label for="id_q4">Answer this question!</label> <input type="text" name="q4" id="id_q4" required></p>
<p><label for="id_q5">The last question. Period.</label> <input type="text" name="q5" id="id_q5" required></p>"""
)
# If a label is set to the empty string for a field, that field won't get a label.
class UserRegistration(Form):
username = CharField(max_length=10, label='')
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(p.as_ul(), """<li> <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>""")
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li> <input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
# If label is None, Django will auto-create the label from the field name. This
# is default behavior.
class UserRegistration(Form):
username = CharField(max_length=10, label=None)
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_username">Username:</label>
<input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
def test_label_suffix(self):
# You can specify the 'label_suffix' argument to a Form class to modify the
# punctuation symbol used at the end of a label. By default, the colon (:) is
# used, and is only appended to the label if the label doesn't already end with a
# punctuation symbol: ., !, ? or :. If you specify a different suffix, it will
# be appended regardless of the last character of the label.
class FavoriteForm(Form):
color = CharField(label='Favorite color?')
animal = CharField(label='Favorite animal')
answer = CharField(label='Secret answer', label_suffix=' =')
f = FavoriteForm(auto_id=False)
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal: <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='?')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal? <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='\u2192')
self.assertHTMLEqual(
f.as_ul(),
'<li>Favorite color? <input type="text" name="color" required></li>\n'
'<li>Favorite animal\u2192 <input type="text" name="animal" required></li>\n'
'<li>Secret answer = <input type="text" name="answer" required></li>'
)
def test_initial_data(self):
# You can specify initial data for a field by using the 'initial' argument to a
# Field class. This initial data is displayed when a Form is rendered with *no*
# data. It is not displayed when a Form is rendered with any data (including an
# empty dictionary). Also, the initial value is *not* used if data for a
# particular required field isn't provided.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# Here, we're submitting data, so the initial value will *not* be displayed.
p = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# An 'initial' value is *not* used as a fallback if data is not provided. In this
# example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
def test_dynamic_initial_data(self):
# The previous technique dealt with "hard-coded" initial data, but it's also
# possible to specify initial data after you've already created the Form class
# (i.e., at runtime). Use the 'initial' parameter to the Form constructor. This
# should be a dictionary containing initial values for one or more fields in the
# form, keyed by field name.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(initial={'username': 'stephane'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(), """<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# A dynamic 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': 'django'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
p = UserRegistration(initial={'username': 'babik'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="babik" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
def test_callable_initial_data(self):
# The previous technique dealt with raw values as initial data, but it's also
# possible to specify callable data.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')])
# We need to define functions that get called later.)
def initial_django():
return 'django'
def initial_stephane():
return 'stephane'
def initial_options():
return ['f', 'b']
def initial_other_options():
return ['b', 'w']
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': initial_django}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration(
{'username': 'foo', 'options': ['f', 'b']}, initial={'username': initial_django}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# A callable 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': initial_django, 'options': initial_options})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial=initial_django)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(
choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')],
initial=initial_other_options,
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b" selected>bar</option>
<option value="w" selected>whiz</option>
</select></li>"""
)
p = UserRegistration(initial={'username': initial_stephane, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
def test_get_initial_for_field(self):
now = datetime.datetime(2006, 10, 25, 14, 30, 45, 123456)
class PersonForm(Form):
first_name = CharField(initial='John')
last_name = CharField(initial='Doe')
age = IntegerField()
occupation = CharField(initial=lambda: 'Unknown')
dt_fixed = DateTimeField(initial=now)
dt_callable = DateTimeField(initial=lambda: now)
form = PersonForm(initial={'first_name': 'Jane'})
cases = [
('age', None),
('last_name', 'Doe'),
# Form.initial overrides Field.initial.
('first_name', 'Jane'),
# Callables are evaluated.
('occupation', 'Unknown'),
# Microseconds are removed from datetimes.
('dt_fixed', datetime.datetime(2006, 10, 25, 14, 30, 45)),
('dt_callable', datetime.datetime(2006, 10, 25, 14, 30, 45)),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
field = form.fields[field_name]
actual = form.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def test_changed_data(self):
class Person(Form):
first_name = CharField(initial='Hans')
last_name = CharField(initial='Greatel')
birthday = DateField(initial=datetime.date(1974, 8, 16))
p = Person(data={'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16'})
self.assertTrue(p.is_valid())
self.assertNotIn('first_name', p.changed_data)
self.assertIn('last_name', p.changed_data)
self.assertNotIn('birthday', p.changed_data)
# A field raising ValidationError is always in changed_data
class PedanticField(forms.Field):
def to_python(self, value):
raise ValidationError('Whatever')
class Person2(Person):
pedantic = PedanticField(initial='whatever', show_hidden_initial=True)
p = Person2(data={
'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16',
'initial-pedantic': 'whatever',
})
self.assertFalse(p.is_valid())
self.assertIn('pedantic', p.changed_data)
def test_boundfield_values(self):
# It's possible to get to the value which would be used for rendering
# the widget for a field by using the BoundField's value method.
class UserRegistration(Form):
username = CharField(max_length=10, initial='djangonaut')
password = CharField(widget=PasswordInput)
unbound = UserRegistration()
bound = UserRegistration({'password': 'foo'})
self.assertIsNone(bound['username'].value())
self.assertEqual(unbound['username'].value(), 'djangonaut')
self.assertEqual(bound['password'].value(), 'foo')
self.assertIsNone(unbound['password'].value())
def test_boundfield_initial_called_once(self):
"""
Multiple calls to BoundField().value() in an unbound form should return
the same result each time (#24391).
"""
class MyForm(Form):
name = CharField(max_length=10, initial=uuid.uuid4)
form = MyForm()
name = form['name']
self.assertEqual(name.value(), name.value())
# BoundField is also cached
self.assertIs(form['name'], name)
def test_boundfield_value_disabled_callable_initial(self):
class PersonForm(Form):
name = CharField(initial=lambda: 'John Doe', disabled=True)
# Without form data.
form = PersonForm()
self.assertEqual(form['name'].value(), 'John Doe')
# With form data. As the field is disabled, the value should not be
# affected by the form data.
form = PersonForm({})
self.assertEqual(form['name'].value(), 'John Doe')
def test_custom_boundfield(self):
class CustomField(CharField):
def get_bound_field(self, form, name):
return (form, name)
class SampleForm(Form):
name = CustomField()
f = SampleForm()
self.assertEqual(f['name'], (f, 'name'))
def test_initial_datetime_values(self):
now = datetime.datetime.now()
# Nix microseconds (since they should be ignored). #22502
now_no_ms = now.replace(microsecond=0)
if now == now_no_ms:
now = now.replace(microsecond=1)
def delayed_now():
return now
def delayed_now_time():
return now.time()
class HiddenInputWithoutMicrosec(HiddenInput):
supports_microseconds = False
class TextInputWithoutMicrosec(TextInput):
supports_microseconds = False
class DateTimeForm(Form):
# Test a non-callable.
fixed = DateTimeField(initial=now)
auto_timestamp = DateTimeField(initial=delayed_now)
auto_time_only = TimeField(initial=delayed_now_time)
supports_microseconds = DateTimeField(initial=delayed_now, widget=TextInput)
hi_default_microsec = DateTimeField(initial=delayed_now, widget=HiddenInput)
hi_without_microsec = DateTimeField(initial=delayed_now, widget=HiddenInputWithoutMicrosec)
ti_without_microsec = DateTimeField(initial=delayed_now, widget=TextInputWithoutMicrosec)
unbound = DateTimeForm()
cases = [
('fixed', now_no_ms),
('auto_timestamp', now_no_ms),
('auto_time_only', now_no_ms.time()),
('supports_microseconds', now),
('hi_default_microsec', now),
('hi_without_microsec', now_no_ms),
('ti_without_microsec', now_no_ms),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
actual = unbound[field_name].value()
self.assertEqual(actual, expected)
# Also check get_initial_for_field().
field = unbound.fields[field_name]
actual = unbound.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def get_datetime_form_with_callable_initial(self, disabled, microseconds=0):
class FakeTime:
def __init__(self):
self.elapsed_seconds = 0
def now(self):
self.elapsed_seconds += 1
return datetime.datetime(
2006, 10, 25, 14, 30, 45 + self.elapsed_seconds,
microseconds,
)
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=FakeTime().now, disabled=disabled)
return DateTimeForm({})
def test_datetime_clean_disabled_callable_initial_microseconds(self):
"""
Cleaning a form with a disabled DateTimeField and callable initial
removes microseconds.
"""
form = self.get_datetime_form_with_callable_initial(
disabled=True, microseconds=123456,
)
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {
'dt': datetime.datetime(2006, 10, 25, 14, 30, 46),
})
def test_datetime_clean_disabled_callable_initial_bound_field(self):
"""
The cleaned value for a form with a disabled DateTimeField and callable
initial matches the bound field's cached initial value.
"""
form = self.get_datetime_form_with_callable_initial(disabled=True)
self.assertEqual(form.errors, {})
cleaned = form.cleaned_data['dt']
self.assertEqual(cleaned, datetime.datetime(2006, 10, 25, 14, 30, 46))
bf = form['dt']
self.assertEqual(cleaned, bf.initial)
def test_datetime_changed_data_callable_with_microseconds(self):
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=lambda: datetime.datetime(2006, 10, 25, 14, 30, 45, 123456), disabled=True)
form = DateTimeForm({'dt': '2006-10-25 14:30:45'})
self.assertEqual(form.changed_data, [])
def test_help_text(self):
# You can specify descriptive text for a field by using the 'help_text' argument)
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput, help_text='Wählen Sie mit Bedacht.')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></p>
<p>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>Username:</th><td><input type="text" name="username" maxlength="10" required><br>
<span class="helptext">e.g., [email protected]</span></td></tr>
<tr><th>Password:</th><td><input type="password" name="password" required><br>
<span class="helptext">Wählen Sie mit Bedacht.</span></td></tr>"""
)
# The help text is displayed whether or not data is provided for the form.
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
# help_text is not displayed for hidden fields. It can be used for documentation
# purposes, though.
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput)
next = CharField(widget=HiddenInput, initial='/', help_text='Redirect destination')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<input type="hidden" name="next" value="/"></li>"""
)
def test_subclassing_forms(self):
# You can subclass a Form to add fields. The resulting form subclass will have
# all of the fields of the parent Form, plus whichever fields you define in the
# subclass.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Musician(Person):
instrument = CharField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
m = Musician(auto_id=False)
self.assertHTMLEqual(
m.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Instrument: <input type="text" name="instrument" required></li>"""
)
# Yes, you can subclass multiple forms. The fields are added in the order in
# which the parent classes are listed.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Instrument(Form):
instrument = CharField()
class Beatle(Person, Instrument):
haircut_type = CharField()
b = Beatle(auto_id=False)
self.assertHTMLEqual(b.as_ul(), """<li>Instrument: <input type="text" name="instrument" required></li>
<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Haircut type: <input type="text" name="haircut_type" required></li>""")
def test_forms_with_prefixes(self):
# Sometimes it's necessary to have multiple forms display on the same HTML page,
# or multiple copies of the same form. We can accomplish this with form prefixes.
# Pass the keyword argument 'prefix' to the Form constructor to use this feature.
# This value will be prepended to each HTML form field name. One way to think
# about this is "namespaces for HTML forms". Notice that in the data argument,
# each field's key has the prefix, in this case 'person1', prepended to the
# actual field name.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_person1-first_name">First name:</label>
<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required></li>
<li><label for="id_person1-last_name">Last name:</label>
<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required></li>
<li><label for="id_person1-birthday">Birthday:</label>
<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required></li>"""
)
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required>'
)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
# Let's try submitting some bad data to make sure form.errors and field.errors
# work as expected.
data = {
'person1-first_name': '',
'person1-last_name': '',
'person1-birthday': ''
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertEqual(p['first_name'].errors, ['This field is required.'])
# Accessing a nonexistent field.
with self.assertRaises(KeyError):
p['person1-first_name'].errors
# In this example, the data doesn't have a prefix, but the form requires it, so
# the form doesn't "see" the fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
# With prefixes, a single data dictionary can hold data for multiple instances
# of the same form.
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9',
'person2-first_name': 'Jim',
'person2-last_name': 'Morrison',
'person2-birthday': '1943-12-8'
}
p1 = Person(data, prefix='person1')
self.assertTrue(p1.is_valid())
self.assertEqual(p1.cleaned_data['first_name'], 'John')
self.assertEqual(p1.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p1.cleaned_data['birthday'], datetime.date(1940, 10, 9))
p2 = Person(data, prefix='person2')
self.assertTrue(p2.is_valid())
self.assertEqual(p2.cleaned_data['first_name'], 'Jim')
self.assertEqual(p2.cleaned_data['last_name'], 'Morrison')
self.assertEqual(p2.cleaned_data['birthday'], datetime.date(1943, 12, 8))
# By default, forms append a hyphen between the prefix and the field name, but a
# form can alter that behavior by implementing the add_prefix() method. This
# method takes a field name and returns the prefixed field, according to
# self.prefix.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
def add_prefix(self, field_name):
return '%s-prefix-%s' % (self.prefix, field_name) if self.prefix else field_name
p = Person(prefix='foo')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_foo-prefix-first_name">First name:</label>
<input type="text" name="foo-prefix-first_name" id="id_foo-prefix-first_name" required></li>
<li><label for="id_foo-prefix-last_name">Last name:</label>
<input type="text" name="foo-prefix-last_name" id="id_foo-prefix-last_name" required></li>
<li><label for="id_foo-prefix-birthday">Birthday:</label>
<input type="text" name="foo-prefix-birthday" id="id_foo-prefix-birthday" required></li>"""
)
data = {
'foo-prefix-first_name': 'John',
'foo-prefix-last_name': 'Lennon',
'foo-prefix-birthday': '1940-10-9'
}
p = Person(data, prefix='foo')
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_class_prefix(self):
# Prefix can be also specified at the class level.
class Person(Form):
first_name = CharField()
prefix = 'foo'
p = Person()
self.assertEqual(p.prefix, 'foo')
p = Person(prefix='bar')
self.assertEqual(p.prefix, 'bar')
def test_forms_with_null_boolean(self):
# NullBooleanField is a bit of a special case because its presentation (widget)
# is different than its data. This is handled transparently, though.
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
p = Person({'name': 'Joe'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '1'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '2'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '3'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': True}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': False}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'unknown'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'true'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'false'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
def test_forms_with_file_fields(self):
# FileFields are a special case because they take their data from the request.FILES,
# not request.POST.
class FileForm(Form):
file1 = FileField()
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
f = FileForm(data={}, files={}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>The submitted file is empty.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': 'something that is not a file'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>No file was submitted. Check the '
'encoding type on the form.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'some content')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
self.assertTrue(f.is_valid())
file1 = SimpleUploadedFile('我隻氣墊船裝滿晒鱔.txt', 'मेरी मँडराने वाली नाव सर्पमीनों से भरी ह'.encode())
f = FileForm(data={}, files={'file1': file1}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data should not contain the
# required HTML attribute. The file input is left blank by the user to
# keep the existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_filefield_initial_callable(self):
class FileForm(forms.Form):
file1 = forms.FileField(initial=lambda: 'resume.txt')
f = FileForm({})
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['file1'], 'resume.txt')
def test_filefield_with_fileinput_required(self):
class FileForm(Form):
file1 = forms.FileField(widget=FileInput)
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data doesn't contain the required
# HTML attribute. The file input is left blank by the user to keep the
# existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_basic_processing_in_view(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
def my_function(method, post_data):
if method == 'POST':
form = UserRegistration(post_data, auto_id=False)
else:
form = UserRegistration(auto_id=False)
if form.is_valid():
return 'VALID: %r' % sorted(form.cleaned_data.items())
t = Template(
'<form method="post">\n'
'<table>\n{{ form }}\n</table>\n<input type="submit" required>\n</form>'
)
return t.render(Context({'form': form}))
# Case 1: GET (an empty form, with no errors).)
self.assertHTMLEqual(my_function('GET', {}), """<form method="post">
<table>
<tr><th>Username:</th><td><input type="text" name="username" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><input type="password" name="password2" required></td></tr>
</table>
<input type="submit" required>
</form>""")
# Case 2: POST with erroneous data (a redisplayed form, with errors).)
self.assertHTMLEqual(
my_function('POST', {'username': 'this-is-a-long-username', 'password1': 'foo', 'password2': 'bar'}),
"""<form method="post">
<table>
<tr><td colspan="2"><ul class="errorlist nonfield"><li>Please make sure your passwords match.</li></ul></td></tr>
<tr><th>Username:</th><td><ul class="errorlist">
<li>Ensure this value has at most 10 characters (it has 23).</li></ul>
<input type="text" name="username" value="this-is-a-long-username" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><input type="password" name="password2" required></td></tr>
</table>
<input type="submit" required>
</form>"""
)
# Case 3: POST with valid data (the success message).)
self.assertEqual(
my_function('POST', {'username': 'adrian', 'password1': 'secret', 'password2': 'secret'}),
"VALID: [('password1', 'secret'), ('password2', 'secret'), ('username', 'adrian')]"
)
def test_templates_with_forms(self):
class UserRegistration(Form):
username = CharField(max_length=10, help_text="Good luck picking a username that doesn't already exist.")
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
# You have full flexibility in displaying form fields in a template. Just pass a
# Form instance to the template, and use "dot" access to refer to individual
# fields. Note, however, that this flexibility comes with the responsibility of
# displaying all the errors, including any that might not be associated with a
# particular field.
t = Template('''<form>
{{ form.username.errors.as_ul }}<p><label>Your username: {{ form.username }}</label></p>
{{ form.password1.errors.as_ul }}<p><label>Password: {{ form.password1 }}</label></p>
{{ form.password2.errors.as_ul }}<p><label>Password (again): {{ form.password2 }}</label></p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(t.render(Context({'form': UserRegistration(auto_id=False)})), """<form>
<p><label>Your username: <input type="text" name="username" maxlength="10" required></label></p>
<p><label>Password: <input type="password" name="password1" required></label></p>
<p><label>Password (again): <input type="password" name="password2" required></label></p>
<input type="submit" required>
</form>""")
self.assertHTMLEqual(
t.render(Context({'form': UserRegistration({'username': 'django'}, auto_id=False)})),
"""<form>
<p><label>Your username: <input type="text" name="username" value="django" maxlength="10" required></label></p>
<ul class="errorlist"><li>This field is required.</li></ul><p>
<label>Password: <input type="password" name="password1" required></label></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label>Password (again): <input type="password" name="password2" required></label></p>
<input type="submit" required>
</form>"""
)
# Use form.[field].label to output a field's label. You can specify the label for
# a field by using the 'label' argument to a Field class. If you don't specify
# 'label', Django will use the field name with underscores converted to spaces,
# and the initial letter capitalized.
t = Template('''<form>
<p><label>{{ form.username.label }}: {{ form.username }}</label></p>
<p><label>{{ form.password1.label }}: {{ form.password1 }}</label></p>
<p><label>{{ form.password2.label }}: {{ form.password2 }}</label></p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(t.render(Context({'form': UserRegistration(auto_id=False)})), """<form>
<p><label>Username: <input type="text" name="username" maxlength="10" required></label></p>
<p><label>Password1: <input type="password" name="password1" required></label></p>
<p><label>Password2: <input type="password" name="password2" required></label></p>
<input type="submit" required>
</form>""")
# User form.[field].label_tag to output a field's label with a <label> tag
# wrapped around it, but *only* if the given field has an "id" attribute.
# Recall from above that passing the "auto_id" argument to a Form gives each
# field an "id" attribute.
t = Template('''<form>
<p>{{ form.username.label_tag }} {{ form.username }}</p>
<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>
<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(t.render(Context({'form': UserRegistration(auto_id=False)})), """<form>
<p>Username: <input type="text" name="username" maxlength="10" required></p>
<p>Password1: <input type="password" name="password1" required></p>
<p>Password2: <input type="password" name="password2" required></p>
<input type="submit" required>
</form>""")
self.assertHTMLEqual(t.render(Context({'form': UserRegistration(auto_id='id_%s')})), """<form>
<p><label for="id_username">Username:</label>
<input id="id_username" type="text" name="username" maxlength="10" required></p>
<p><label for="id_password1">Password1:</label>
<input type="password" name="password1" id="id_password1" required></p>
<p><label for="id_password2">Password2:</label>
<input type="password" name="password2" id="id_password2" required></p>
<input type="submit" required>
</form>""")
# User form.[field].help_text to output a field's help text. If the given field
# does not have help text, nothing will be output.
t = Template('''<form>
<p>{{ form.username.label_tag }} {{ form.username }}<br>{{ form.username.help_text }}</p>
<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>
<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(
t.render(Context({'form': UserRegistration(auto_id=False)})),
"""<form>
<p>Username: <input type="text" name="username" maxlength="10" required><br>
Good luck picking a username that doesn't already exist.</p>
<p>Password1: <input type="password" name="password1" required></p>
<p>Password2: <input type="password" name="password2" required></p>
<input type="submit" required>
</form>"""
)
self.assertEqual(
Template('{{ form.password1.help_text }}').render(Context({'form': UserRegistration(auto_id=False)})),
''
)
# To display the errors that aren't associated with a particular field -- e.g.,
# the errors caused by Form.clean() -- use {{ form.non_field_errors }} in the
# template. If used on its own, it is displayed as a <ul> (or an empty string, if
# the list of errors is empty). You can also use it in {% if %} statements.
t = Template('''<form>
{{ form.username.errors.as_ul }}<p><label>Your username: {{ form.username }}</label></p>
{{ form.password1.errors.as_ul }}<p><label>Password: {{ form.password1 }}</label></p>
{{ form.password2.errors.as_ul }}<p><label>Password (again): {{ form.password2 }}</label></p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(
t.render(Context({
'form': UserRegistration({'username': 'django', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
})),
"""<form>
<p><label>Your username: <input type="text" name="username" value="django" maxlength="10" required></label></p>
<p><label>Password: <input type="password" name="password1" required></label></p>
<p><label>Password (again): <input type="password" name="password2" required></label></p>
<input type="submit" required>
</form>"""
)
t = Template('''<form>
{{ form.non_field_errors }}
{{ form.username.errors.as_ul }}<p><label>Your username: {{ form.username }}</label></p>
{{ form.password1.errors.as_ul }}<p><label>Password: {{ form.password1 }}</label></p>
{{ form.password2.errors.as_ul }}<p><label>Password (again): {{ form.password2 }}</label></p>
<input type="submit" required>
</form>''')
self.assertHTMLEqual(
t.render(Context({
'form': UserRegistration({'username': 'django', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
})),
"""<form>
<ul class="errorlist nonfield"><li>Please make sure your passwords match.</li></ul>
<p><label>Your username: <input type="text" name="username" value="django" maxlength="10" required></label></p>
<p><label>Password: <input type="password" name="password1" required></label></p>
<p><label>Password (again): <input type="password" name="password2" required></label></p>
<input type="submit" required>
</form>"""
)
def test_empty_permitted(self):
# Sometimes (pretty much in formsets) we want to allow a form to pass validation
# if it is completely empty. We can accomplish this by using the empty_permitted
# argument to a form constructor.
class SongForm(Form):
artist = CharField()
name = CharField()
# First let's show what happens id empty_permitted=False (the default):
data = {'artist': '', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.'], 'artist': ['This field is required.']})
self.assertEqual(form.cleaned_data, {})
# Now let's show what happens when empty_permitted=True and the form is empty.
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {})
# But if we fill in data for one of the fields, the form is no longer empty and
# the whole thing must pass validation.
data = {'artist': 'The Doors', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.']})
self.assertEqual(form.cleaned_data, {'artist': 'The Doors'})
# If a field is not given in the data then None is returned for its data. Lets
# make sure that when checking for empty_permitted that None is treated
# accordingly.
data = {'artist': None, 'song': ''}
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
# However, we *really* need to be sure we are checking for None as any data in
# initial that returns False on a boolean call needs to be treated literally.
class PriceForm(Form):
amount = FloatField()
qty = IntegerField()
data = {'amount': '0.0', 'qty': ''}
form = PriceForm(data, initial={'amount': 0.0}, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
def test_empty_permitted_and_use_required_attribute(self):
msg = (
'The empty_permitted and use_required_attribute arguments may not '
'both be True.'
)
with self.assertRaisesMessage(ValueError, msg):
Person(empty_permitted=True, use_required_attribute=True)
def test_extracting_hidden_and_visible(self):
class SongForm(Form):
token = CharField(widget=HiddenInput)
artist = CharField()
name = CharField()
form = SongForm()
self.assertEqual([f.name for f in form.hidden_fields()], ['token'])
self.assertEqual([f.name for f in form.visible_fields()], ['artist', 'name'])
def test_hidden_initial_gets_id(self):
class MyForm(Form):
field1 = CharField(max_length=50, show_hidden_initial=True)
self.assertHTMLEqual(
MyForm().as_table(),
'<tr><th><label for="id_field1">Field1:</label></th>'
'<td><input id="id_field1" type="text" name="field1" maxlength="50" required>'
'<input type="hidden" name="initial-field1" id="initial-id_field1"></td></tr>'
)
def test_error_html_required_html_classes(self):
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
email = EmailField(required=False)
age = IntegerField()
p = Person({})
p.error_css_class = 'error'
p.required_css_class = 'required'
self.assertHTMLEqual(
p.as_ul(),
"""<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></li>
<li><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></li>
<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_age">Age:</label> <input type="number" name="age" id="id_age" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_name">Name:</label>
<input type="text" name="name" id="id_name" required></p>
<p class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></p>
<p><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_age">Age:</label>
<input type="number" name="age" id="id_age" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr class="required error">
<th><label class="required" for="id_name">Name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="name" id="id_name" required></td></tr>
<tr class="required"><th><label class="required" for="id_is_cool">Is cool:</label></th>
<td><select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></td></tr>
<tr><th><label for="id_email">Email:</label></th><td>
<input type="email" name="email" id="id_email"></td></tr>
<tr class="required error"><th><label class="required" for="id_age">Age:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="number" name="age" id="id_age" required></td></tr>"""
)
def test_label_has_required_css_class(self):
"""
#17922 - required_css_class is added to the label_tag() of required fields.
"""
class SomeForm(Form):
required_css_class = 'required'
field = CharField(max_length=10)
field2 = IntegerField(required=False)
f = SomeForm({'field': 'test'})
self.assertHTMLEqual(f['field'].label_tag(), '<label for="id_field" class="required">Field:</label>')
self.assertHTMLEqual(
f['field'].label_tag(attrs={'class': 'foo'}),
'<label for="id_field" class="foo required">Field:</label>'
)
self.assertHTMLEqual(f['field2'].label_tag(), '<label for="id_field2">Field2:</label>')
def test_label_split_datetime_not_displayed(self):
class EventForm(Form):
happened_at = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
form = EventForm()
self.assertHTMLEqual(
form.as_ul(),
'<input type="hidden" name="happened_at_0" id="id_happened_at_0">'
'<input type="hidden" name="happened_at_1" id="id_happened_at_1">'
)
def test_multivalue_field_validation(self):
def bad_names(value):
if value == 'bad value':
raise ValidationError('bad value not allowed')
class NameField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (CharField(label='First name', max_length=10),
CharField(label='Last name', max_length=10))
super().__init__(fields=fields, *args, **kwargs)
def compress(self, data_list):
return ' '.join(data_list)
class NameForm(Form):
name = NameField(validators=[bad_names])
form = NameForm(data={'name': ['bad', 'value']})
form.full_clean()
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['bad value not allowed']})
form = NameForm(data={'name': ['should be overly', 'long for the field names']})
self.assertFalse(form.is_valid())
self.assertEqual(
form.errors, {
'name': [
'Ensure this value has at most 10 characters (it has 16).',
'Ensure this value has at most 10 characters (it has 24).',
],
}
)
form = NameForm(data={'name': ['fname', 'lname']})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {'name': 'fname lname'})
def test_multivalue_deep_copy(self):
"""
#19298 -- MultiValueField needs to override the default as it needs
to deep-copy subfields:
"""
class ChoicesField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (
ChoiceField(label='Rank', choices=((1, 1), (2, 2))),
CharField(label='Name', max_length=10),
)
super().__init__(fields=fields, *args, **kwargs)
field = ChoicesField()
field2 = copy.deepcopy(field)
self.assertIsInstance(field2, ChoicesField)
self.assertIsNot(field2.fields, field.fields)
self.assertIsNot(field2.fields[0].choices, field.fields[0].choices)
def test_multivalue_initial_data(self):
"""
#23674 -- invalid initial data should not break form.changed_data()
"""
class DateAgeField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (DateField(label="Date"), IntegerField(label="Age"))
super().__init__(fields=fields, *args, **kwargs)
class DateAgeForm(Form):
date_age = DateAgeField()
data = {"date_age": ["1998-12-06", 16]}
form = DateAgeForm(data, initial={"date_age": ["200-10-10", 14]})
self.assertTrue(form.has_changed())
def test_multivalue_optional_subfields(self):
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = (
CharField(label='Country Code', validators=[
RegexValidator(r'^\+[0-9]{1,2}$', message='Enter a valid country code.')]),
CharField(label='Phone Number'),
CharField(label='Extension', error_messages={'incomplete': 'Enter an extension.'}),
CharField(label='Label', required=False, help_text='E.g. home, work.'),
)
super().__init__(fields, *args, **kwargs)
def compress(self, data_list):
if data_list:
return '%s.%s ext. %s (label: %s)' % tuple(data_list)
return None
# An empty value for any field will raise a `required` error on a
# required `MultiValueField`.
f = PhoneField()
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61'])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61', '287654321', '123'])
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# Empty values for fields will NOT raise a `required` error on an
# optional `MultiValueField`
f = PhoneField(required=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
self.assertEqual('+61. ext. (label: )', f.clean(['+61']))
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For a required `MultiValueField` with `require_all_fields=False`, a
# `required` error will only be raised if all fields are empty. Fields
# can individually be required or optional. An empty value for any
# required field will raise an `incomplete` error.
f = PhoneField(require_all_fields=False)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For an optional `MultiValueField` with `require_all_fields=False`, we
# don't get any `required` error but we still get `incomplete` errors.
f = PhoneField(required=False, require_all_fields=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
def test_multivalue_optional_subfields_rendering(self):
class PhoneWidget(MultiWidget):
def __init__(self, attrs=None):
widgets = [TextInput(), TextInput()]
super().__init__(widgets, attrs)
def decompress(self, value):
return [None, None]
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = [CharField(), CharField(required=False)]
super().__init__(fields, *args, **kwargs)
class PhoneForm(Form):
phone1 = PhoneField(widget=PhoneWidget)
phone2 = PhoneField(widget=PhoneWidget, required=False)
phone3 = PhoneField(widget=PhoneWidget, require_all_fields=False)
phone4 = PhoneField(
widget=PhoneWidget, required=False, require_all_fields=False,
)
form = PhoneForm(auto_id=False)
self.assertHTMLEqual(
form.as_p(),
"""
<p>Phone1:<input type="text" name="phone1_0" required><input type="text" name="phone1_1" required></p>
<p>Phone2:<input type="text" name="phone2_0"><input type="text" name="phone2_1"></p>
<p>Phone3:<input type="text" name="phone3_0" required><input type="text" name="phone3_1"></p>
<p>Phone4:<input type="text" name="phone4_0"><input type="text" name="phone4_1"></p>
""",
)
def test_custom_empty_values(self):
"""
Form fields can customize what is considered as an empty value
for themselves (#19997).
"""
class CustomJSONField(CharField):
empty_values = [None, '']
def to_python(self, value):
# Fake json.loads
if value == '{}':
return {}
return super().to_python(value)
class JSONForm(forms.Form):
json = CustomJSONField()
form = JSONForm(data={'json': '{}'})
form.full_clean()
self.assertEqual(form.cleaned_data, {'json': {}})
def test_boundfield_label_tag(self):
class SomeForm(Form):
field = CharField()
boundfield = SomeForm()['field']
testcases = [ # (args, kwargs, expected)
# without anything: just print the <label>
((), {}, '<label for="id_field">Field:</label>'),
# passing just one argument: overrides the field's label
(('custom',), {}, '<label for="id_field">custom:</label>'),
# the overridden label is escaped
(('custom&',), {}, '<label for="id_field">custom&:</label>'),
((mark_safe('custom&'),), {}, '<label for="id_field">custom&:</label>'),
# Passing attrs to add extra attributes on the <label>
((), {'attrs': {'class': 'pretty'}}, '<label for="id_field" class="pretty">Field:</label>')
]
for args, kwargs, expected in testcases:
with self.subTest(args=args, kwargs=kwargs):
self.assertHTMLEqual(boundfield.label_tag(*args, **kwargs), expected)
def test_boundfield_label_tag_no_id(self):
"""
If a widget has no id, label_tag just returns the text with no
surrounding <label>.
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(auto_id='')['field']
self.assertHTMLEqual(boundfield.label_tag(), 'Field:')
self.assertHTMLEqual(boundfield.label_tag('Custom&'), 'Custom&:')
def test_boundfield_label_tag_custom_widget_id_for_label(self):
class CustomIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return 'custom_' + id
class EmptyIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return None
class SomeForm(Form):
custom = CharField(widget=CustomIdForLabelTextInput)
empty = CharField(widget=EmptyIdForLabelTextInput)
form = SomeForm()
self.assertHTMLEqual(form['custom'].label_tag(), '<label for="custom_id_custom">Custom:</label>')
self.assertHTMLEqual(form['empty'].label_tag(), '<label>Empty:</label>')
def test_boundfield_empty_label(self):
class SomeForm(Form):
field = CharField(label='')
boundfield = SomeForm()['field']
self.assertHTMLEqual(boundfield.label_tag(), '<label for="id_field"></label>')
def test_boundfield_id_for_label(self):
class SomeForm(Form):
field = CharField(label='')
self.assertEqual(SomeForm()['field'].id_for_label, 'id_field')
def test_boundfield_id_for_label_override_by_attrs(self):
"""
If an id is provided in `Widget.attrs`, it overrides the generated ID,
unless it is `None`.
"""
class SomeForm(Form):
field = CharField(widget=TextInput(attrs={'id': 'myCustomID'}))
field_none = CharField(widget=TextInput(attrs={'id': None}))
form = SomeForm()
self.assertEqual(form['field'].id_for_label, 'myCustomID')
self.assertEqual(form['field_none'].id_for_label, 'id_field_none')
def test_boundfield_subwidget_id_for_label(self):
"""
If auto_id is provided when initializing the form, the generated ID in
subwidgets must reflect that prefix.
"""
class SomeForm(Form):
field = MultipleChoiceField(
choices=[('a', 'A'), ('b', 'B')],
widget=CheckboxSelectMultiple,
)
form = SomeForm(auto_id='prefix_%s')
subwidgets = form['field'].subwidgets
self.assertEqual(subwidgets[0].id_for_label, 'prefix_field_0')
self.assertEqual(subwidgets[1].id_for_label, 'prefix_field_1')
def test_boundfield_widget_type(self):
class SomeForm(Form):
first_name = CharField()
birthday = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
f = SomeForm()
self.assertEqual(f['first_name'].widget_type, 'text')
self.assertEqual(f['birthday'].widget_type, 'splithiddendatetime')
def test_boundfield_css_classes(self):
form = Person()
field = form['first_name']
self.assertEqual(field.css_classes(), '')
self.assertEqual(field.css_classes(extra_classes=''), '')
self.assertEqual(field.css_classes(extra_classes='test'), 'test')
self.assertEqual(field.css_classes(extra_classes='test test'), 'test')
def test_label_tag_override(self):
"""
BoundField label_suffix (if provided) overrides Form label_suffix
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(label_suffix='!')['field']
self.assertHTMLEqual(boundfield.label_tag(label_suffix='$'), '<label for="id_field">Field$</label>')
def test_field_name(self):
"""#5749 - `field_name` may be used as a key in _html_output()."""
class SomeForm(Form):
some_field = CharField()
def as_p(self):
return self._html_output(
normal_row='<p id="p_%(field_name)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p id="p_some_field"></p>')
def test_field_without_css_classes(self):
"""
`css_classes` may be used as a key in _html_output() (empty classes).
"""
class SomeForm(Form):
some_field = CharField()
def as_p(self):
return self._html_output(
normal_row='<p class="%(css_classes)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p class=""></p>')
def test_field_with_css_class(self):
"""
`css_classes` may be used as a key in _html_output() (class comes
from required_css_class in this case).
"""
class SomeForm(Form):
some_field = CharField()
required_css_class = 'foo'
def as_p(self):
return self._html_output(
normal_row='<p class="%(css_classes)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p class="foo"></p>')
def test_field_name_with_hidden_input(self):
"""
BaseForm._html_output() should merge all the hidden input fields and
put them in the last row.
"""
class SomeForm(Form):
hidden1 = CharField(widget=HiddenInput)
custom = CharField()
hidden2 = CharField(widget=HiddenInput)
def as_p(self):
return self._html_output(
normal_row='<p%(html_class_attr)s>%(field)s %(field_name)s</p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(
form.as_p(),
'<p><input id="id_custom" name="custom" type="text" required> custom'
'<input id="id_hidden1" name="hidden1" type="hidden">'
'<input id="id_hidden2" name="hidden2" type="hidden"></p>'
)
def test_field_name_with_hidden_input_and_non_matching_row_ender(self):
"""
BaseForm._html_output() should merge all the hidden input fields and
put them in the last row ended with the specific row ender.
"""
class SomeForm(Form):
hidden1 = CharField(widget=HiddenInput)
custom = CharField()
hidden2 = CharField(widget=HiddenInput)
def as_p(self):
return self._html_output(
normal_row='<p%(html_class_attr)s>%(field)s %(field_name)s</p>',
error_row='%s',
row_ender='<hr><hr>',
help_text_html=' %s',
errors_on_separate_row=True
)
form = SomeForm()
self.assertHTMLEqual(
form.as_p(),
'<p><input id="id_custom" name="custom" type="text" required> custom</p>\n'
'<input id="id_hidden1" name="hidden1" type="hidden">'
'<input id="id_hidden2" name="hidden2" type="hidden"><hr><hr>'
)
def test_error_dict(self):
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError('Non-field error.', code='secret', params={'a': 1, 'b': 2})
form = MyForm({})
self.assertIs(form.is_valid(), False)
errors = form.errors.as_text()
control = [
'* foo\n * This field is required.',
'* bar\n * This field is required.',
'* __all__\n * Non-field error.',
]
for error in control:
self.assertIn(error, errors)
errors = form.errors.as_ul()
control = [
'<li>foo<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>bar<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>__all__<ul class="errorlist nonfield"><li>Non-field error.</li></ul></li>',
]
for error in control:
self.assertInHTML(error, errors)
errors = form.errors.get_json_data()
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': 'Non-field error.'}]
}
self.assertEqual(errors, control)
self.assertEqual(json.dumps(errors), form.errors.as_json())
def test_error_dict_as_json_escape_html(self):
"""#21962 - adding html escape flag to ErrorDict"""
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError(
'<p>Non-field error.</p>',
code='secret',
params={'a': 1, 'b': 2},
)
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': '<p>Non-field error.</p>'}]
}
form = MyForm({})
self.assertFalse(form.is_valid())
errors = json.loads(form.errors.as_json())
self.assertEqual(errors, control)
escaped_error = '<p>Non-field error.</p>'
self.assertEqual(
form.errors.get_json_data(escape_html=True)['__all__'][0]['message'],
escaped_error
)
errors = json.loads(form.errors.as_json(escape_html=True))
control['__all__'][0]['message'] = escaped_error
self.assertEqual(errors, control)
def test_error_list(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertIsInstance(e, list)
self.assertIn('Foo', e)
self.assertIn('Foo', ValidationError(e))
self.assertEqual(
e.as_text(),
'* Foo\n* Foobar'
)
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
errors = e.get_json_data()
self.assertEqual(
errors,
[{"message": "Foo", "code": ""}, {"message": "Foobar", "code": "foobar"}]
)
self.assertEqual(json.dumps(errors), e.as_json())
def test_error_list_class_not_specified(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_class_has_one_class_specified(self):
e = ErrorList(error_class='foobar-error-class')
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist foobar-error-class"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_with_hidden_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField(widget=HiddenInput)
p = Person({'first_name': 'John'})
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></li><li>
<label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field last_name) This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></td></tr>"""
)
def test_error_list_with_non_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField()
def clean(self):
raise ValidationError('Generic validation error')
p = Person({'first_name': 'John', 'last_name': 'Lennon'})
self.assertHTMLEqual(
str(p.non_field_errors()),
'<ul class="errorlist nonfield"><li>Generic validation error</li></ul>'
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>
<ul class="errorlist nonfield"><li>Generic validation error</li></ul></li>
<li><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></li>
<li><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></li>"""
)
self.assertHTMLEqual(
p.non_field_errors().as_text(),
'* Generic validation error'
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>Generic validation error</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></p>
<p><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield"><li>Generic validation error</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></td></tr>"""
)
def test_errorlist_override(self):
class DivErrorList(ErrorList):
def __str__(self):
return self.as_divs()
def as_divs(self):
if not self:
return ''
return '<div class="errorlist">%s</div>' % ''.join(
'<div class="error">%s</div>' % e for e in self)
class CommentForm(Form):
name = CharField(max_length=50, required=False)
email = EmailField()
comment = CharField()
data = {'email': 'invalid'}
f = CommentForm(data, auto_id=False, error_class=DivErrorList)
self.assertHTMLEqual(f.as_p(), """<p>Name: <input type="text" name="name" maxlength="50"></p>
<div class="errorlist"><div class="error">Enter a valid email address.</div></div>
<p>Email: <input type="email" name="email" value="invalid" required></p>
<div class="errorlist"><div class="error">This field is required.</div></div>
<p>Comment: <input type="text" name="comment" required></p>""")
def test_error_escaping(self):
class TestForm(Form):
hidden = CharField(widget=HiddenInput(), required=False)
visible = CharField()
def clean_hidden(self):
raise ValidationError('Foo & "bar"!')
clean_visible = clean_hidden
form = TestForm({'hidden': 'a', 'visible': 'b'})
form.is_valid()
self.assertHTMLEqual(
form.as_ul(),
'<li><ul class="errorlist nonfield"><li>(Hidden field hidden) Foo & "bar"!</li></ul></li>'
'<li><ul class="errorlist"><li>Foo & "bar"!</li></ul>'
'<label for="id_visible">Visible:</label> '
'<input type="text" name="visible" value="b" id="id_visible" required>'
'<input type="hidden" name="hidden" value="a" id="id_hidden"></li>'
)
def test_baseform_repr(self):
"""
BaseForm.__repr__() should contain some basic information about the
form.
"""
p = Person()
self.assertEqual(repr(p), "<Person bound=False, valid=Unknown, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertEqual(repr(p), "<Person bound=True, valid=Unknown, fields=(first_name;last_name;birthday)>")
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=True, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=False, fields=(first_name;last_name;birthday)>")
def test_baseform_repr_dont_trigger_validation(self):
"""
BaseForm.__repr__() shouldn't trigger the form validation.
"""
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
repr(p)
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {'first_name': 'John', 'last_name': 'Lennon'})
def test_accessing_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
if not self.errors:
data['username'] = data['username'].lower()
return data
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_nothing_returned(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
self.cleaned_data['username'] = self.cleaned_data['username'].lower()
# don't return anything
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_in_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
# Return a different dict. We have not changed self.cleaned_data.
return {
'username': data['username'].lower(),
'password': 'this_is_not_a_secret',
}
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_multipart_encoded_form(self):
class FormWithoutFile(Form):
username = CharField()
class FormWithFile(Form):
username = CharField()
file = FileField()
class FormWithImage(Form):
image = ImageField()
self.assertFalse(FormWithoutFile().is_multipart())
self.assertTrue(FormWithFile().is_multipart())
self.assertTrue(FormWithImage().is_multipart())
def test_html_safe(self):
class SimpleForm(Form):
username = CharField()
form = SimpleForm()
self.assertTrue(hasattr(SimpleForm, '__html__'))
self.assertEqual(str(form), form.__html__())
self.assertTrue(hasattr(form['username'], '__html__'))
self.assertEqual(str(form['username']), form['username'].__html__())
def test_use_required_attribute_true(self):
class MyForm(Form):
use_required_attribute = True
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text" required></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> '
'<input id="id_f1" maxlength="30" name="f1" type="text" required></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text" required></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th>'
'<td><textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_use_required_attribute_false(self):
class MyForm(Form):
use_required_attribute = False
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text"></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th><td><textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_only_hidden_fields(self):
# A form with *only* hidden fields that has errors is going to be very unusual.
class HiddenForm(Form):
data = IntegerField(widget=HiddenInput)
f = HiddenForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>\n<p> '
'<input type="hidden" name="data" id="id_data"></p>'
)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>'
'<input type="hidden" name="data" id="id_data"></td></tr>'
)
def test_field_named_data(self):
class DataForm(Form):
data = CharField(max_length=10)
f = DataForm({'data': 'xyzzy'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data, {'data': 'xyzzy'})
def test_empty_data_files_multi_value_dict(self):
p = Person()
self.assertIsInstance(p.data, MultiValueDict)
self.assertIsInstance(p.files, MultiValueDict)
def test_field_deep_copy_error_messages(self):
class CustomCharField(CharField):
def __init__(self, **kwargs):
kwargs['error_messages'] = {'invalid': 'Form custom error message.'}
super().__init__(**kwargs)
field = CustomCharField()
field_copy = copy.deepcopy(field)
self.assertIsInstance(field_copy, CustomCharField)
self.assertIsNot(field_copy.error_messages, field.error_messages)
class CustomRenderer(DjangoTemplates):
pass
class RendererTests(SimpleTestCase):
def test_default(self):
form = Form()
self.assertEqual(form.renderer, get_default_renderer())
def test_kwarg_instance(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_kwarg_class(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_attribute_instance(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
form = CustomForm()
self.assertEqual(form.renderer, CustomForm.default_renderer)
def test_attribute_class(self):
class CustomForm(Form):
default_renderer = CustomRenderer
form = CustomForm()
self.assertIsInstance(form.renderer, CustomForm.default_renderer)
def test_attribute_override(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
custom = CustomRenderer()
form = CustomForm(renderer=custom)
self.assertEqual(form.renderer, custom)
|
68268e542abb36ce818f88ccda94171e08540bb0dce4ade07813d54a10e082f3 | """
Timezone-related classes and functions.
"""
import functools
import sys
import warnings
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
from contextlib import ContextDecorator
from datetime import datetime, timedelta, timezone, tzinfo
from asgiref.local import Local
from django.conf import settings
from django.utils.deprecation import RemovedInDjango50Warning
__all__ = [
'utc', 'get_fixed_timezone',
'get_default_timezone', 'get_default_timezone_name',
'get_current_timezone', 'get_current_timezone_name',
'activate', 'deactivate', 'override',
'localtime', 'now',
'is_aware', 'is_naive', 'make_aware', 'make_naive',
]
# RemovedInDjango50Warning: sentinel for deprecation of is_dst parameters.
NOT_PASSED = object()
utc = timezone.utc
def get_fixed_timezone(offset):
"""Return a tzinfo instance with a fixed offset from UTC."""
if isinstance(offset, timedelta):
offset = offset.total_seconds() // 60
sign = '-' if offset < 0 else '+'
hhmm = '%02d%02d' % divmod(abs(offset), 60)
name = sign + hhmm
return timezone(timedelta(minutes=offset), name)
# In order to avoid accessing settings at compile time,
# wrap the logic in a function and cache the result.
@functools.lru_cache()
def get_default_timezone():
"""
Return the default time zone as a tzinfo instance.
This is the time zone defined by settings.TIME_ZONE.
"""
if settings.USE_DEPRECATED_PYTZ:
import pytz
return pytz.timezone(settings.TIME_ZONE)
return zoneinfo.ZoneInfo(settings.TIME_ZONE)
# This function exists for consistency with get_current_timezone_name
def get_default_timezone_name():
"""Return the name of the default time zone."""
return _get_timezone_name(get_default_timezone())
_active = Local()
def get_current_timezone():
"""Return the currently active time zone as a tzinfo instance."""
return getattr(_active, "value", get_default_timezone())
def get_current_timezone_name():
"""Return the name of the currently active time zone."""
return _get_timezone_name(get_current_timezone())
def _get_timezone_name(timezone):
"""
Return the offset for fixed offset timezones, or the name of timezone if
not set.
"""
return timezone.tzname(None) or str(timezone)
# Timezone selection functions.
# These functions don't change os.environ['TZ'] and call time.tzset()
# because it isn't thread safe.
def activate(timezone):
"""
Set the time zone for the current thread.
The ``timezone`` argument must be an instance of a tzinfo subclass or a
time zone name.
"""
if isinstance(timezone, tzinfo):
_active.value = timezone
elif isinstance(timezone, str):
if settings.USE_DEPRECATED_PYTZ:
import pytz
_active.value = pytz.timezone(timezone)
else:
_active.value = zoneinfo.ZoneInfo(timezone)
else:
raise ValueError("Invalid timezone: %r" % timezone)
def deactivate():
"""
Unset the time zone for the current thread.
Django will then use the time zone defined by settings.TIME_ZONE.
"""
if hasattr(_active, "value"):
del _active.value
class override(ContextDecorator):
"""
Temporarily set the time zone for the current thread.
This is a context manager that uses django.utils.timezone.activate()
to set the timezone on entry and restores the previously active timezone
on exit.
The ``timezone`` argument must be an instance of a ``tzinfo`` subclass, a
time zone name, or ``None``. If it is ``None``, Django enables the default
time zone.
"""
def __init__(self, timezone):
self.timezone = timezone
def __enter__(self):
self.old_timezone = getattr(_active, 'value', None)
if self.timezone is None:
deactivate()
else:
activate(self.timezone)
def __exit__(self, exc_type, exc_value, traceback):
if self.old_timezone is None:
deactivate()
else:
_active.value = self.old_timezone
# Templates
def template_localtime(value, use_tz=None):
"""
Check if value is a datetime and converts it to local time if necessary.
If use_tz is provided and is not None, that will force the value to
be converted (or not), overriding the value of settings.USE_TZ.
This function is designed for use by the template engine.
"""
should_convert = (
isinstance(value, datetime) and
(settings.USE_TZ if use_tz is None else use_tz) and
not is_naive(value) and
getattr(value, 'convert_to_local_time', True)
)
return localtime(value) if should_convert else value
# Utilities
def localtime(value=None, timezone=None):
"""
Convert an aware datetime.datetime to local time.
Only aware datetimes are allowed. When value is omitted, it defaults to
now().
Local time is defined by the current time zone, unless another time zone
is specified.
"""
if value is None:
value = now()
if timezone is None:
timezone = get_current_timezone()
# Emulate the behavior of astimezone() on Python < 3.6.
if is_naive(value):
raise ValueError("localtime() cannot be applied to a naive datetime")
return value.astimezone(timezone)
def localdate(value=None, timezone=None):
"""
Convert an aware datetime to local time and return the value's date.
Only aware datetimes are allowed. When value is omitted, it defaults to
now().
Local time is defined by the current time zone, unless another time zone is
specified.
"""
return localtime(value, timezone).date()
def now():
"""
Return an aware or naive datetime.datetime, depending on settings.USE_TZ.
"""
return datetime.now(tz=utc if settings.USE_TZ else None)
# By design, these four functions don't perform any checks on their arguments.
# The caller should ensure that they don't receive an invalid value like None.
def is_aware(value):
"""
Determine if a given datetime.datetime is aware.
The concept is defined in Python's docs:
https://docs.python.org/library/datetime.html#datetime.tzinfo
Assuming value.tzinfo is either None or a proper datetime.tzinfo,
value.utcoffset() implements the appropriate logic.
"""
return value.utcoffset() is not None
def is_naive(value):
"""
Determine if a given datetime.datetime is naive.
The concept is defined in Python's docs:
https://docs.python.org/library/datetime.html#datetime.tzinfo
Assuming value.tzinfo is either None or a proper datetime.tzinfo,
value.utcoffset() implements the appropriate logic.
"""
return value.utcoffset() is None
def make_aware(value, timezone=None, is_dst=NOT_PASSED):
"""Make a naive datetime.datetime in a given time zone aware."""
if is_dst is NOT_PASSED:
is_dst = None
else:
warnings.warn(
'The is_dst argument to make_aware(), used by the Trunc() '
'database functions and QuerySet.datetimes(), is deprecated as it '
'has no effect with zoneinfo time zones.',
RemovedInDjango50Warning,
)
if timezone is None:
timezone = get_current_timezone()
if _is_pytz_zone(timezone):
# This method is available for pytz time zones.
return timezone.localize(value, is_dst=is_dst)
else:
# Check that we won't overwrite the timezone of an aware datetime.
if is_aware(value):
raise ValueError(
"make_aware expects a naive datetime, got %s" % value)
# This may be wrong around DST changes!
return value.replace(tzinfo=timezone)
def make_naive(value, timezone=None):
"""Make an aware datetime.datetime naive in a given time zone."""
if timezone is None:
timezone = get_current_timezone()
# Emulate the behavior of astimezone() on Python < 3.6.
if is_naive(value):
raise ValueError("make_naive() cannot be applied to a naive datetime")
return value.astimezone(timezone).replace(tzinfo=None)
_PYTZ_IMPORTED = False
def _pytz_imported():
"""
Detects whether or not pytz has been imported without importing pytz.
Copied from pytz_deprecation_shim with thanks to Paul Ganssle.
"""
global _PYTZ_IMPORTED
if not _PYTZ_IMPORTED and "pytz" in sys.modules:
_PYTZ_IMPORTED = True
return _PYTZ_IMPORTED
def _is_pytz_zone(tz):
"""Checks if a zone is a pytz zone."""
# See if pytz was already imported rather than checking
# settings.USE_DEPRECATED_PYTZ to *allow* manually passing a pytz timezone,
# which some of the test cases (at least) rely on.
if not _pytz_imported():
return False
# If tz could be pytz, then pytz is needed here.
import pytz
_PYTZ_BASE_CLASSES = (pytz.tzinfo.BaseTzInfo, pytz._FixedOffset)
# In releases prior to 2018.4, pytz.UTC was not a subclass of BaseTzInfo
if not isinstance(pytz.UTC, pytz._FixedOffset):
_PYTZ_BASE_CLASSES = _PYTZ_BASE_CLASSES + (type(pytz.UTC),)
return isinstance(tz, _PYTZ_BASE_CLASSES)
def _datetime_ambiguous_or_imaginary(dt, tz):
if _is_pytz_zone(tz):
import pytz
try:
tz.utcoffset(dt)
except (pytz.AmbiguousTimeError, pytz.NonExistentTimeError):
return True
else:
return False
return tz.utcoffset(dt.replace(fold=not dt.fold)) != tz.utcoffset(dt)
|
1e94e0d53a68a45ab7e871b8396bb51748c1a5ee7ede428089ce27f1e2cce928 | import datetime
import decimal
import functools
import re
import unicodedata
from importlib import import_module
from django.conf import settings
from django.utils import dateformat, numberformat
from django.utils.functional import lazy
from django.utils.translation import (
check_for_language, get_language, to_locale,
)
# format_cache is a mapping from (format_type, lang) to the format string.
# By using the cache, it is possible to avoid running get_format_modules
# repeatedly.
_format_cache = {}
_format_modules_cache = {}
ISO_INPUT_FORMATS = {
'DATE_INPUT_FORMATS': ['%Y-%m-%d'],
'TIME_INPUT_FORMATS': ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M'],
'DATETIME_INPUT_FORMATS': [
'%Y-%m-%d %H:%M:%S',
'%Y-%m-%d %H:%M:%S.%f',
'%Y-%m-%d %H:%M',
'%Y-%m-%d'
],
}
FORMAT_SETTINGS = frozenset([
'DECIMAL_SEPARATOR',
'THOUSAND_SEPARATOR',
'NUMBER_GROUPING',
'FIRST_DAY_OF_WEEK',
'MONTH_DAY_FORMAT',
'TIME_FORMAT',
'DATE_FORMAT',
'DATETIME_FORMAT',
'SHORT_DATE_FORMAT',
'SHORT_DATETIME_FORMAT',
'YEAR_MONTH_FORMAT',
'DATE_INPUT_FORMATS',
'TIME_INPUT_FORMATS',
'DATETIME_INPUT_FORMATS',
])
def reset_format_cache():
"""Clear any cached formats.
This method is provided primarily for testing purposes,
so that the effects of cached formats can be removed.
"""
global _format_cache, _format_modules_cache
_format_cache = {}
_format_modules_cache = {}
def iter_format_modules(lang, format_module_path=None):
"""Find format modules."""
if not check_for_language(lang):
return
if format_module_path is None:
format_module_path = settings.FORMAT_MODULE_PATH
format_locations = []
if format_module_path:
if isinstance(format_module_path, str):
format_module_path = [format_module_path]
for path in format_module_path:
format_locations.append(path + '.%s')
format_locations.append('django.conf.locale.%s')
locale = to_locale(lang)
locales = [locale]
if '_' in locale:
locales.append(locale.split('_')[0])
for location in format_locations:
for loc in locales:
try:
yield import_module('%s.formats' % (location % loc))
except ImportError:
pass
def get_format_modules(lang=None):
"""Return a list of the format modules found."""
if lang is None:
lang = get_language()
if lang not in _format_modules_cache:
_format_modules_cache[lang] = list(iter_format_modules(lang, settings.FORMAT_MODULE_PATH))
return _format_modules_cache[lang]
def get_format(format_type, lang=None, use_l10n=None):
"""
For a specific format type, return the format for the current
language (locale). Default to the format in the settings.
format_type is the name of the format, e.g. 'DATE_FORMAT'.
If use_l10n is provided and is not None, it forces the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
use_l10n = use_l10n or (use_l10n is None and (
settings._USE_L10N_INTERNAL
if hasattr(settings, '_USE_L10N_INTERNAL')
else settings.USE_L10N
))
if use_l10n and lang is None:
lang = get_language()
cache_key = (format_type, lang)
try:
return _format_cache[cache_key]
except KeyError:
pass
# The requested format_type has not been cached yet. Try to find it in any
# of the format_modules for the given lang if l10n is enabled. If it's not
# there or if l10n is disabled, fall back to the project settings.
val = None
if use_l10n:
for module in get_format_modules(lang):
val = getattr(module, format_type, None)
if val is not None:
break
if val is None:
if format_type not in FORMAT_SETTINGS:
return format_type
val = getattr(settings, format_type)
elif format_type in ISO_INPUT_FORMATS:
# If a list of input formats from one of the format_modules was
# retrieved, make sure the ISO_INPUT_FORMATS are in this list.
val = list(val)
for iso_input in ISO_INPUT_FORMATS.get(format_type, ()):
if iso_input not in val:
val.append(iso_input)
_format_cache[cache_key] = val
return val
get_format_lazy = lazy(get_format, str, list, tuple)
def date_format(value, format=None, use_l10n=None):
"""
Format a datetime.date or datetime.datetime object using a
localizable format.
If use_l10n is provided and is not None, that will force the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
return dateformat.format(value, get_format(format or 'DATE_FORMAT', use_l10n=use_l10n))
def time_format(value, format=None, use_l10n=None):
"""
Format a datetime.time object using a localizable format.
If use_l10n is provided and is not None, it forces the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
return dateformat.time_format(value, get_format(format or 'TIME_FORMAT', use_l10n=use_l10n))
def number_format(value, decimal_pos=None, use_l10n=None, force_grouping=False):
"""
Format a numeric value using localization settings.
If use_l10n is provided and is not None, it forces the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
use_l10n = use_l10n or (use_l10n is None and (
settings._USE_L10N_INTERNAL
if hasattr(settings, '_USE_L10N_INTERNAL')
else settings.USE_L10N
))
lang = get_language() if use_l10n else None
return numberformat.format(
value,
get_format('DECIMAL_SEPARATOR', lang, use_l10n=use_l10n),
decimal_pos,
get_format('NUMBER_GROUPING', lang, use_l10n=use_l10n),
get_format('THOUSAND_SEPARATOR', lang, use_l10n=use_l10n),
force_grouping=force_grouping,
use_l10n=use_l10n,
)
def localize(value, use_l10n=None):
"""
Check if value is a localizable type (date, number...) and return it
formatted as a string using current locale format.
If use_l10n is provided and is not None, it forces the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
if isinstance(value, str): # Handle strings first for performance reasons.
return value
elif isinstance(value, bool): # Make sure booleans don't get treated as numbers
return str(value)
elif isinstance(value, (decimal.Decimal, float, int)):
if use_l10n is False:
return str(value)
return number_format(value, use_l10n=use_l10n)
elif isinstance(value, datetime.datetime):
return date_format(value, 'DATETIME_FORMAT', use_l10n=use_l10n)
elif isinstance(value, datetime.date):
return date_format(value, use_l10n=use_l10n)
elif isinstance(value, datetime.time):
return time_format(value, 'TIME_FORMAT', use_l10n=use_l10n)
return value
def localize_input(value, default=None):
"""
Check if an input value is a localizable type and return it
formatted with the appropriate formatting string of the current locale.
"""
if isinstance(value, str): # Handle strings first for performance reasons.
return value
elif isinstance(value, bool): # Don't treat booleans as numbers.
return str(value)
elif isinstance(value, (decimal.Decimal, float, int)):
return number_format(value)
elif isinstance(value, datetime.datetime):
format = default or get_format('DATETIME_INPUT_FORMATS')[0]
format = sanitize_strftime_format(format)
return value.strftime(format)
elif isinstance(value, datetime.date):
format = default or get_format('DATE_INPUT_FORMATS')[0]
format = sanitize_strftime_format(format)
return value.strftime(format)
elif isinstance(value, datetime.time):
format = default or get_format('TIME_INPUT_FORMATS')[0]
return value.strftime(format)
return value
@functools.lru_cache()
def sanitize_strftime_format(fmt):
"""
Ensure that certain specifiers are correctly padded with leading zeros.
For years < 1000 specifiers %C, %F, %G, and %Y don't work as expected for
strftime provided by glibc on Linux as they don't pad the year or century
with leading zeros. Support for specifying the padding explicitly is
available, however, which can be used to fix this issue.
FreeBSD, macOS, and Windows do not support explicitly specifying the
padding, but return four digit years (with leading zeros) as expected.
This function checks whether the %Y produces a correctly padded string and,
if not, makes the following substitutions:
- %C → %02C
- %F → %010F
- %G → %04G
- %Y → %04Y
See https://bugs.python.org/issue13305 for more details.
"""
if datetime.date(1, 1, 1).strftime('%Y') == '0001':
return fmt
mapping = {'C': 2, 'F': 10, 'G': 4, 'Y': 4}
return re.sub(
r'((?:^|[^%])(?:%%)*)%([CFGY])',
lambda m: r'%s%%0%s%s' % (m[1], mapping[m[2]], m[2]),
fmt,
)
def sanitize_separators(value):
"""
Sanitize a value according to the current decimal and
thousand separator setting. Used with form field input.
"""
if isinstance(value, str):
parts = []
decimal_separator = get_format('DECIMAL_SEPARATOR')
if decimal_separator in value:
value, decimals = value.split(decimal_separator, 1)
parts.append(decimals)
if settings.USE_THOUSAND_SEPARATOR:
thousand_sep = get_format('THOUSAND_SEPARATOR')
if thousand_sep == '.' and value.count('.') == 1 and len(value.split('.')[-1]) != 3:
# Special case where we suspect a dot meant decimal separator (see #22171)
pass
else:
for replacement in {
thousand_sep, unicodedata.normalize('NFKD', thousand_sep)}:
value = value.replace(replacement, '')
parts.append(value)
value = '.'.join(reversed(parts))
return value
|
8e076f386170202f983f51cf6aadc3a5075f935ebadebf8df17ca084b0aef4a5 | """
Helper functions for creating Form classes from Django models
and database field objects.
"""
from itertools import chain
from django.core.exceptions import (
NON_FIELD_ERRORS, FieldError, ImproperlyConfigured, ValidationError,
)
from django.forms.fields import ChoiceField, Field
from django.forms.forms import BaseForm, DeclarativeFieldsMetaclass
from django.forms.formsets import BaseFormSet, formset_factory
from django.forms.utils import ErrorList
from django.forms.widgets import (
HiddenInput, MultipleHiddenInput, RadioSelect, SelectMultiple,
)
from django.utils.text import capfirst, get_text_list
from django.utils.translation import gettext, gettext_lazy as _
__all__ = (
'ModelForm', 'BaseModelForm', 'model_to_dict', 'fields_for_model',
'ModelChoiceField', 'ModelMultipleChoiceField', 'ALL_FIELDS',
'BaseModelFormSet', 'modelformset_factory', 'BaseInlineFormSet',
'inlineformset_factory', 'modelform_factory',
)
ALL_FIELDS = '__all__'
def construct_instance(form, instance, fields=None, exclude=None):
"""
Construct and return a model instance from the bound ``form``'s
``cleaned_data``, but do not save the returned instance to the database.
"""
from django.db import models
opts = instance._meta
cleaned_data = form.cleaned_data
file_field_list = []
for f in opts.fields:
if not f.editable or isinstance(f, models.AutoField) \
or f.name not in cleaned_data:
continue
if fields is not None and f.name not in fields:
continue
if exclude and f.name in exclude:
continue
# Leave defaults for fields that aren't in POST data, except for
# checkbox inputs because they don't appear in POST data if not checked.
if (
f.has_default() and
form[f.name].field.widget.value_omitted_from_data(form.data, form.files, form.add_prefix(f.name)) and
cleaned_data.get(f.name) in form[f.name].field.empty_values
):
continue
# Defer saving file-type fields until after the other fields, so a
# callable upload_to can use the values from other fields.
if isinstance(f, models.FileField):
file_field_list.append(f)
else:
f.save_form_data(instance, cleaned_data[f.name])
for f in file_field_list:
f.save_form_data(instance, cleaned_data[f.name])
return instance
# ModelForms #################################################################
def model_to_dict(instance, fields=None, exclude=None):
"""
Return a dict containing the data in ``instance`` suitable for passing as
a Form's ``initial`` keyword argument.
``fields`` is an optional list of field names. If provided, return only the
named.
``exclude`` is an optional list of field names. If provided, exclude the
named from the returned dict, even if they are listed in the ``fields``
argument.
"""
opts = instance._meta
data = {}
for f in chain(opts.concrete_fields, opts.private_fields, opts.many_to_many):
if not getattr(f, 'editable', False):
continue
if fields is not None and f.name not in fields:
continue
if exclude and f.name in exclude:
continue
data[f.name] = f.value_from_object(instance)
return data
def apply_limit_choices_to_to_formfield(formfield):
"""Apply limit_choices_to to the formfield's queryset if needed."""
from django.db.models import Exists, OuterRef, Q
if hasattr(formfield, 'queryset') and hasattr(formfield, 'get_limit_choices_to'):
limit_choices_to = formfield.get_limit_choices_to()
if limit_choices_to:
complex_filter = limit_choices_to
if not isinstance(complex_filter, Q):
complex_filter = Q(**limit_choices_to)
complex_filter &= Q(pk=OuterRef('pk'))
# Use Exists() to avoid potential duplicates.
formfield.queryset = formfield.queryset.filter(
Exists(formfield.queryset.model._base_manager.filter(complex_filter)),
)
def fields_for_model(model, fields=None, exclude=None, widgets=None,
formfield_callback=None, localized_fields=None,
labels=None, help_texts=None, error_messages=None,
field_classes=None, *, apply_limit_choices_to=True):
"""
Return a dictionary containing form fields for the given model.
``fields`` is an optional list of field names. If provided, return only the
named fields.
``exclude`` is an optional list of field names. If provided, exclude the
named fields from the returned fields, even if they are listed in the
``fields`` argument.
``widgets`` is a dictionary of model field names mapped to a widget.
``formfield_callback`` is a callable that takes a model field and returns
a form field.
``localized_fields`` is a list of names of fields which should be localized.
``labels`` is a dictionary of model field names mapped to a label.
``help_texts`` is a dictionary of model field names mapped to a help text.
``error_messages`` is a dictionary of model field names mapped to a
dictionary of error messages.
``field_classes`` is a dictionary of model field names mapped to a form
field class.
``apply_limit_choices_to`` is a boolean indicating if limit_choices_to
should be applied to a field's queryset.
"""
field_dict = {}
ignored = []
opts = model._meta
# Avoid circular import
from django.db.models import Field as ModelField
sortable_private_fields = [f for f in opts.private_fields if isinstance(f, ModelField)]
for f in sorted(chain(opts.concrete_fields, sortable_private_fields, opts.many_to_many)):
if not getattr(f, 'editable', False):
if (fields is not None and f.name in fields and
(exclude is None or f.name not in exclude)):
raise FieldError(
"'%s' cannot be specified for %s model form as it is a non-editable field" % (
f.name, model.__name__)
)
continue
if fields is not None and f.name not in fields:
continue
if exclude and f.name in exclude:
continue
kwargs = {}
if widgets and f.name in widgets:
kwargs['widget'] = widgets[f.name]
if localized_fields == ALL_FIELDS or (localized_fields and f.name in localized_fields):
kwargs['localize'] = True
if labels and f.name in labels:
kwargs['label'] = labels[f.name]
if help_texts and f.name in help_texts:
kwargs['help_text'] = help_texts[f.name]
if error_messages and f.name in error_messages:
kwargs['error_messages'] = error_messages[f.name]
if field_classes and f.name in field_classes:
kwargs['form_class'] = field_classes[f.name]
if formfield_callback is None:
formfield = f.formfield(**kwargs)
elif not callable(formfield_callback):
raise TypeError('formfield_callback must be a function or callable')
else:
formfield = formfield_callback(f, **kwargs)
if formfield:
if apply_limit_choices_to:
apply_limit_choices_to_to_formfield(formfield)
field_dict[f.name] = formfield
else:
ignored.append(f.name)
if fields:
field_dict = {
f: field_dict.get(f) for f in fields
if (not exclude or f not in exclude) and f not in ignored
}
return field_dict
class ModelFormOptions:
def __init__(self, options=None):
self.model = getattr(options, 'model', None)
self.fields = getattr(options, 'fields', None)
self.exclude = getattr(options, 'exclude', None)
self.widgets = getattr(options, 'widgets', None)
self.localized_fields = getattr(options, 'localized_fields', None)
self.labels = getattr(options, 'labels', None)
self.help_texts = getattr(options, 'help_texts', None)
self.error_messages = getattr(options, 'error_messages', None)
self.field_classes = getattr(options, 'field_classes', None)
class ModelFormMetaclass(DeclarativeFieldsMetaclass):
def __new__(mcs, name, bases, attrs):
base_formfield_callback = None
for b in bases:
if hasattr(b, 'Meta') and hasattr(b.Meta, 'formfield_callback'):
base_formfield_callback = b.Meta.formfield_callback
break
formfield_callback = attrs.pop('formfield_callback', base_formfield_callback)
new_class = super().__new__(mcs, name, bases, attrs)
if bases == (BaseModelForm,):
return new_class
opts = new_class._meta = ModelFormOptions(getattr(new_class, 'Meta', None))
# We check if a string was passed to `fields` or `exclude`,
# which is likely to be a mistake where the user typed ('foo') instead
# of ('foo',)
for opt in ['fields', 'exclude', 'localized_fields']:
value = getattr(opts, opt)
if isinstance(value, str) and value != ALL_FIELDS:
msg = ("%(model)s.Meta.%(opt)s cannot be a string. "
"Did you mean to type: ('%(value)s',)?" % {
'model': new_class.__name__,
'opt': opt,
'value': value,
})
raise TypeError(msg)
if opts.model:
# If a model is defined, extract form fields from it.
if opts.fields is None and opts.exclude is None:
raise ImproperlyConfigured(
"Creating a ModelForm without either the 'fields' attribute "
"or the 'exclude' attribute is prohibited; form %s "
"needs updating." % name
)
if opts.fields == ALL_FIELDS:
# Sentinel for fields_for_model to indicate "get the list of
# fields from the model"
opts.fields = None
fields = fields_for_model(
opts.model, opts.fields, opts.exclude, opts.widgets,
formfield_callback, opts.localized_fields, opts.labels,
opts.help_texts, opts.error_messages, opts.field_classes,
# limit_choices_to will be applied during ModelForm.__init__().
apply_limit_choices_to=False,
)
# make sure opts.fields doesn't specify an invalid field
none_model_fields = {k for k, v in fields.items() if not v}
missing_fields = none_model_fields.difference(new_class.declared_fields)
if missing_fields:
message = 'Unknown field(s) (%s) specified for %s'
message = message % (', '.join(missing_fields),
opts.model.__name__)
raise FieldError(message)
# Override default model fields with any custom declared ones
# (plus, include all the other declared fields).
fields.update(new_class.declared_fields)
else:
fields = new_class.declared_fields
new_class.base_fields = fields
return new_class
class BaseModelForm(BaseForm):
def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
initial=None, error_class=ErrorList, label_suffix=None,
empty_permitted=False, instance=None, use_required_attribute=None,
renderer=None):
opts = self._meta
if opts.model is None:
raise ValueError('ModelForm has no model class specified.')
if instance is None:
# if we didn't get an instance, instantiate a new one
self.instance = opts.model()
object_data = {}
else:
self.instance = instance
object_data = model_to_dict(instance, opts.fields, opts.exclude)
# if initial was provided, it should override the values from instance
if initial is not None:
object_data.update(initial)
# self._validate_unique will be set to True by BaseModelForm.clean().
# It is False by default so overriding self.clean() and failing to call
# super will stop validate_unique from being called.
self._validate_unique = False
super().__init__(
data, files, auto_id, prefix, object_data, error_class,
label_suffix, empty_permitted, use_required_attribute=use_required_attribute,
renderer=renderer,
)
for formfield in self.fields.values():
apply_limit_choices_to_to_formfield(formfield)
def _get_validation_exclusions(self):
"""
For backwards-compatibility, exclude several types of fields from model
validation. See tickets #12507, #12521, #12553.
"""
exclude = []
# Build up a list of fields that should be excluded from model field
# validation and unique checks.
for f in self.instance._meta.fields:
field = f.name
# Exclude fields that aren't on the form. The developer may be
# adding these values to the model after form validation.
if field not in self.fields:
exclude.append(f.name)
# Don't perform model validation on fields that were defined
# manually on the form and excluded via the ModelForm's Meta
# class. See #12901.
elif self._meta.fields and field not in self._meta.fields:
exclude.append(f.name)
elif self._meta.exclude and field in self._meta.exclude:
exclude.append(f.name)
# Exclude fields that failed form validation. There's no need for
# the model fields to validate them as well.
elif field in self._errors:
exclude.append(f.name)
# Exclude empty fields that are not required by the form, if the
# underlying model field is required. This keeps the model field
# from raising a required error. Note: don't exclude the field from
# validation if the model field allows blanks. If it does, the blank
# value may be included in a unique check, so cannot be excluded
# from validation.
else:
form_field = self.fields[field]
field_value = self.cleaned_data.get(field)
if not f.blank and not form_field.required and field_value in form_field.empty_values:
exclude.append(f.name)
return exclude
def clean(self):
self._validate_unique = True
return self.cleaned_data
def _update_errors(self, errors):
# Override any validation error messages defined at the model level
# with those defined at the form level.
opts = self._meta
# Allow the model generated by construct_instance() to raise
# ValidationError and have them handled in the same way as others.
if hasattr(errors, 'error_dict'):
error_dict = errors.error_dict
else:
error_dict = {NON_FIELD_ERRORS: errors}
for field, messages in error_dict.items():
if (field == NON_FIELD_ERRORS and opts.error_messages and
NON_FIELD_ERRORS in opts.error_messages):
error_messages = opts.error_messages[NON_FIELD_ERRORS]
elif field in self.fields:
error_messages = self.fields[field].error_messages
else:
continue
for message in messages:
if (isinstance(message, ValidationError) and
message.code in error_messages):
message.message = error_messages[message.code]
self.add_error(None, errors)
def _post_clean(self):
opts = self._meta
exclude = self._get_validation_exclusions()
# Foreign Keys being used to represent inline relationships
# are excluded from basic field value validation. This is for two
# reasons: firstly, the value may not be supplied (#12507; the
# case of providing new values to the admin); secondly the
# object being referred to may not yet fully exist (#12749).
# However, these fields *must* be included in uniqueness checks,
# so this can't be part of _get_validation_exclusions().
for name, field in self.fields.items():
if isinstance(field, InlineForeignKeyField):
exclude.append(name)
try:
self.instance = construct_instance(self, self.instance, opts.fields, opts.exclude)
except ValidationError as e:
self._update_errors(e)
try:
self.instance.full_clean(exclude=exclude, validate_unique=False)
except ValidationError as e:
self._update_errors(e)
# Validate uniqueness if needed.
if self._validate_unique:
self.validate_unique()
def validate_unique(self):
"""
Call the instance's validate_unique() method and update the form's
validation errors if any were raised.
"""
exclude = self._get_validation_exclusions()
try:
self.instance.validate_unique(exclude=exclude)
except ValidationError as e:
self._update_errors(e)
def _save_m2m(self):
"""
Save the many-to-many fields and generic relations for this form.
"""
cleaned_data = self.cleaned_data
exclude = self._meta.exclude
fields = self._meta.fields
opts = self.instance._meta
# Note that for historical reasons we want to include also
# private_fields here. (GenericRelation was previously a fake
# m2m field).
for f in chain(opts.many_to_many, opts.private_fields):
if not hasattr(f, 'save_form_data'):
continue
if fields and f.name not in fields:
continue
if exclude and f.name in exclude:
continue
if f.name in cleaned_data:
f.save_form_data(self.instance, cleaned_data[f.name])
def save(self, commit=True):
"""
Save this form's self.instance object if commit=True. Otherwise, add
a save_m2m() method to the form which can be called after the instance
is saved manually at a later time. Return the model instance.
"""
if self.errors:
raise ValueError(
"The %s could not be %s because the data didn't validate." % (
self.instance._meta.object_name,
'created' if self.instance._state.adding else 'changed',
)
)
if commit:
# If committing, save the instance and the m2m data immediately.
self.instance.save()
self._save_m2m()
else:
# If not committing, add a method to the form to allow deferred
# saving of m2m data.
self.save_m2m = self._save_m2m
return self.instance
save.alters_data = True
class ModelForm(BaseModelForm, metaclass=ModelFormMetaclass):
pass
def modelform_factory(model, form=ModelForm, fields=None, exclude=None,
formfield_callback=None, widgets=None, localized_fields=None,
labels=None, help_texts=None, error_messages=None,
field_classes=None):
"""
Return a ModelForm containing form fields for the given model. You can
optionally pass a `form` argument to use as a starting point for
constructing the ModelForm.
``fields`` is an optional list of field names. If provided, include only
the named fields in the returned fields. If omitted or '__all__', use all
fields.
``exclude`` is an optional list of field names. If provided, exclude the
named fields from the returned fields, even if they are listed in the
``fields`` argument.
``widgets`` is a dictionary of model field names mapped to a widget.
``localized_fields`` is a list of names of fields which should be localized.
``formfield_callback`` is a callable that takes a model field and returns
a form field.
``labels`` is a dictionary of model field names mapped to a label.
``help_texts`` is a dictionary of model field names mapped to a help text.
``error_messages`` is a dictionary of model field names mapped to a
dictionary of error messages.
``field_classes`` is a dictionary of model field names mapped to a form
field class.
"""
# Create the inner Meta class. FIXME: ideally, we should be able to
# construct a ModelForm without creating and passing in a temporary
# inner class.
# Build up a list of attributes that the Meta object will have.
attrs = {'model': model}
if fields is not None:
attrs['fields'] = fields
if exclude is not None:
attrs['exclude'] = exclude
if widgets is not None:
attrs['widgets'] = widgets
if localized_fields is not None:
attrs['localized_fields'] = localized_fields
if labels is not None:
attrs['labels'] = labels
if help_texts is not None:
attrs['help_texts'] = help_texts
if error_messages is not None:
attrs['error_messages'] = error_messages
if field_classes is not None:
attrs['field_classes'] = field_classes
# If parent form class already has an inner Meta, the Meta we're
# creating needs to inherit from the parent's inner meta.
bases = (form.Meta,) if hasattr(form, 'Meta') else ()
Meta = type('Meta', bases, attrs)
if formfield_callback:
Meta.formfield_callback = staticmethod(formfield_callback)
# Give this new form class a reasonable name.
class_name = model.__name__ + 'Form'
# Class attributes for the new form class.
form_class_attrs = {
'Meta': Meta,
'formfield_callback': formfield_callback
}
if (getattr(Meta, 'fields', None) is None and
getattr(Meta, 'exclude', None) is None):
raise ImproperlyConfigured(
"Calling modelform_factory without defining 'fields' or "
"'exclude' explicitly is prohibited."
)
# Instantiate type(form) in order to use the same metaclass as form.
return type(form)(class_name, (form,), form_class_attrs)
# ModelFormSets ##############################################################
class BaseModelFormSet(BaseFormSet):
"""
A ``FormSet`` for editing a queryset and/or adding new objects to it.
"""
model = None
# Set of fields that must be unique among forms of this set.
unique_fields = set()
def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
queryset=None, *, initial=None, **kwargs):
self.queryset = queryset
self.initial_extra = initial
super().__init__(**{'data': data, 'files': files, 'auto_id': auto_id, 'prefix': prefix, **kwargs})
def initial_form_count(self):
"""Return the number of forms that are required in this FormSet."""
if not self.is_bound:
return len(self.get_queryset())
return super().initial_form_count()
def _existing_object(self, pk):
if not hasattr(self, '_object_dict'):
self._object_dict = {o.pk: o for o in self.get_queryset()}
return self._object_dict.get(pk)
def _get_to_python(self, field):
"""
If the field is a related field, fetch the concrete field's (that
is, the ultimate pointed-to field's) to_python.
"""
while field.remote_field is not None:
field = field.remote_field.get_related_field()
return field.to_python
def _construct_form(self, i, **kwargs):
pk_required = i < self.initial_form_count()
if pk_required:
if self.is_bound:
pk_key = '%s-%s' % (self.add_prefix(i), self.model._meta.pk.name)
try:
pk = self.data[pk_key]
except KeyError:
# The primary key is missing. The user may have tampered
# with POST data.
pass
else:
to_python = self._get_to_python(self.model._meta.pk)
try:
pk = to_python(pk)
except ValidationError:
# The primary key exists but is an invalid value. The
# user may have tampered with POST data.
pass
else:
kwargs['instance'] = self._existing_object(pk)
else:
kwargs['instance'] = self.get_queryset()[i]
elif self.initial_extra:
# Set initial values for extra forms
try:
kwargs['initial'] = self.initial_extra[i - self.initial_form_count()]
except IndexError:
pass
form = super()._construct_form(i, **kwargs)
if pk_required:
form.fields[self.model._meta.pk.name].required = True
return form
def get_queryset(self):
if not hasattr(self, '_queryset'):
if self.queryset is not None:
qs = self.queryset
else:
qs = self.model._default_manager.get_queryset()
# If the queryset isn't already ordered we need to add an
# artificial ordering here to make sure that all formsets
# constructed from this queryset have the same form order.
if not qs.ordered:
qs = qs.order_by(self.model._meta.pk.name)
# Removed queryset limiting here. As per discussion re: #13023
# on django-dev, max_num should not prevent existing
# related objects/inlines from being displayed.
self._queryset = qs
return self._queryset
def save_new(self, form, commit=True):
"""Save and return a new model instance for the given form."""
return form.save(commit=commit)
def save_existing(self, form, instance, commit=True):
"""Save and return an existing model instance for the given form."""
return form.save(commit=commit)
def delete_existing(self, obj, commit=True):
"""Deletes an existing model instance."""
if commit:
obj.delete()
def save(self, commit=True):
"""
Save model instances for every form, adding and changing instances
as necessary, and return the list of instances.
"""
if not commit:
self.saved_forms = []
def save_m2m():
for form in self.saved_forms:
form.save_m2m()
self.save_m2m = save_m2m
return self.save_existing_objects(commit) + self.save_new_objects(commit)
save.alters_data = True
def clean(self):
self.validate_unique()
def validate_unique(self):
# Collect unique_checks and date_checks to run from all the forms.
all_unique_checks = set()
all_date_checks = set()
forms_to_delete = self.deleted_forms
valid_forms = [form for form in self.forms if form.is_valid() and form not in forms_to_delete]
for form in valid_forms:
exclude = form._get_validation_exclusions()
unique_checks, date_checks = form.instance._get_unique_checks(exclude=exclude)
all_unique_checks.update(unique_checks)
all_date_checks.update(date_checks)
errors = []
# Do each of the unique checks (unique and unique_together)
for uclass, unique_check in all_unique_checks:
seen_data = set()
for form in valid_forms:
# Get the data for the set of fields that must be unique among the forms.
row_data = (
field if field in self.unique_fields else form.cleaned_data[field]
for field in unique_check if field in form.cleaned_data
)
# Reduce Model instances to their primary key values
row_data = tuple(
d._get_pk_val() if hasattr(d, '_get_pk_val')
# Prevent "unhashable type: list" errors later on.
else tuple(d) if isinstance(d, list)
else d for d in row_data
)
if row_data and None not in row_data:
# if we've already seen it then we have a uniqueness failure
if row_data in seen_data:
# poke error messages into the right places and mark
# the form as invalid
errors.append(self.get_unique_error_message(unique_check))
form._errors[NON_FIELD_ERRORS] = self.error_class([self.get_form_error()])
# remove the data from the cleaned_data dict since it was invalid
for field in unique_check:
if field in form.cleaned_data:
del form.cleaned_data[field]
# mark the data as seen
seen_data.add(row_data)
# iterate over each of the date checks now
for date_check in all_date_checks:
seen_data = set()
uclass, lookup, field, unique_for = date_check
for form in valid_forms:
# see if we have data for both fields
if (form.cleaned_data and form.cleaned_data[field] is not None and
form.cleaned_data[unique_for] is not None):
# if it's a date lookup we need to get the data for all the fields
if lookup == 'date':
date = form.cleaned_data[unique_for]
date_data = (date.year, date.month, date.day)
# otherwise it's just the attribute on the date/datetime
# object
else:
date_data = (getattr(form.cleaned_data[unique_for], lookup),)
data = (form.cleaned_data[field],) + date_data
# if we've already seen it then we have a uniqueness failure
if data in seen_data:
# poke error messages into the right places and mark
# the form as invalid
errors.append(self.get_date_error_message(date_check))
form._errors[NON_FIELD_ERRORS] = self.error_class([self.get_form_error()])
# remove the data from the cleaned_data dict since it was invalid
del form.cleaned_data[field]
# mark the data as seen
seen_data.add(data)
if errors:
raise ValidationError(errors)
def get_unique_error_message(self, unique_check):
if len(unique_check) == 1:
return gettext("Please correct the duplicate data for %(field)s.") % {
"field": unique_check[0],
}
else:
return gettext("Please correct the duplicate data for %(field)s, which must be unique.") % {
"field": get_text_list(unique_check, _("and")),
}
def get_date_error_message(self, date_check):
return gettext(
"Please correct the duplicate data for %(field_name)s "
"which must be unique for the %(lookup)s in %(date_field)s."
) % {
'field_name': date_check[2],
'date_field': date_check[3],
'lookup': str(date_check[1]),
}
def get_form_error(self):
return gettext("Please correct the duplicate values below.")
def save_existing_objects(self, commit=True):
self.changed_objects = []
self.deleted_objects = []
if not self.initial_forms:
return []
saved_instances = []
forms_to_delete = self.deleted_forms
for form in self.initial_forms:
obj = form.instance
# If the pk is None, it means either:
# 1. The object is an unexpected empty model, created by invalid
# POST data such as an object outside the formset's queryset.
# 2. The object was already deleted from the database.
if obj.pk is None:
continue
if form in forms_to_delete:
self.deleted_objects.append(obj)
self.delete_existing(obj, commit=commit)
elif form.has_changed():
self.changed_objects.append((obj, form.changed_data))
saved_instances.append(self.save_existing(form, obj, commit=commit))
if not commit:
self.saved_forms.append(form)
return saved_instances
def save_new_objects(self, commit=True):
self.new_objects = []
for form in self.extra_forms:
if not form.has_changed():
continue
# If someone has marked an add form for deletion, don't save the
# object.
if self.can_delete and self._should_delete_form(form):
continue
self.new_objects.append(self.save_new(form, commit=commit))
if not commit:
self.saved_forms.append(form)
return self.new_objects
def add_fields(self, form, index):
"""Add a hidden field for the object's primary key."""
from django.db.models import AutoField, ForeignKey, OneToOneField
self._pk_field = pk = self.model._meta.pk
# If a pk isn't editable, then it won't be on the form, so we need to
# add it here so we can tell which object is which when we get the
# data back. Generally, pk.editable should be false, but for some
# reason, auto_created pk fields and AutoField's editable attribute is
# True, so check for that as well.
def pk_is_not_editable(pk):
return (
(not pk.editable) or (pk.auto_created or isinstance(pk, AutoField)) or (
pk.remote_field and pk.remote_field.parent_link and
pk_is_not_editable(pk.remote_field.model._meta.pk)
)
)
if pk_is_not_editable(pk) or pk.name not in form.fields:
if form.is_bound:
# If we're adding the related instance, ignore its primary key
# as it could be an auto-generated default which isn't actually
# in the database.
pk_value = None if form.instance._state.adding else form.instance.pk
else:
try:
if index is not None:
pk_value = self.get_queryset()[index].pk
else:
pk_value = None
except IndexError:
pk_value = None
if isinstance(pk, (ForeignKey, OneToOneField)):
qs = pk.remote_field.model._default_manager.get_queryset()
else:
qs = self.model._default_manager.get_queryset()
qs = qs.using(form.instance._state.db)
if form._meta.widgets:
widget = form._meta.widgets.get(self._pk_field.name, HiddenInput)
else:
widget = HiddenInput
form.fields[self._pk_field.name] = ModelChoiceField(qs, initial=pk_value, required=False, widget=widget)
super().add_fields(form, index)
def modelformset_factory(model, form=ModelForm, formfield_callback=None,
formset=BaseModelFormSet, extra=1, can_delete=False,
can_order=False, max_num=None, fields=None, exclude=None,
widgets=None, validate_max=False, localized_fields=None,
labels=None, help_texts=None, error_messages=None,
min_num=None, validate_min=False, field_classes=None,
absolute_max=None, can_delete_extra=True):
"""Return a FormSet class for the given Django model class."""
meta = getattr(form, 'Meta', None)
if (getattr(meta, 'fields', fields) is None and
getattr(meta, 'exclude', exclude) is None):
raise ImproperlyConfigured(
"Calling modelformset_factory without defining 'fields' or "
"'exclude' explicitly is prohibited."
)
form = modelform_factory(model, form=form, fields=fields, exclude=exclude,
formfield_callback=formfield_callback,
widgets=widgets, localized_fields=localized_fields,
labels=labels, help_texts=help_texts,
error_messages=error_messages, field_classes=field_classes)
FormSet = formset_factory(form, formset, extra=extra, min_num=min_num, max_num=max_num,
can_order=can_order, can_delete=can_delete,
validate_min=validate_min, validate_max=validate_max,
absolute_max=absolute_max, can_delete_extra=can_delete_extra)
FormSet.model = model
return FormSet
# InlineFormSets #############################################################
class BaseInlineFormSet(BaseModelFormSet):
"""A formset for child objects related to a parent."""
def __init__(self, data=None, files=None, instance=None,
save_as_new=False, prefix=None, queryset=None, **kwargs):
if instance is None:
self.instance = self.fk.remote_field.model()
else:
self.instance = instance
self.save_as_new = save_as_new
if queryset is None:
queryset = self.model._default_manager
if self.instance.pk is not None:
qs = queryset.filter(**{self.fk.name: self.instance})
else:
qs = queryset.none()
self.unique_fields = {self.fk.name}
super().__init__(data, files, prefix=prefix, queryset=qs, **kwargs)
# Add the generated field to form._meta.fields if it's defined to make
# sure validation isn't skipped on that field.
if self.form._meta.fields and self.fk.name not in self.form._meta.fields:
if isinstance(self.form._meta.fields, tuple):
self.form._meta.fields = list(self.form._meta.fields)
self.form._meta.fields.append(self.fk.name)
def initial_form_count(self):
if self.save_as_new:
return 0
return super().initial_form_count()
def _construct_form(self, i, **kwargs):
form = super()._construct_form(i, **kwargs)
if self.save_as_new:
mutable = getattr(form.data, '_mutable', None)
# Allow modifying an immutable QueryDict.
if mutable is not None:
form.data._mutable = True
# Remove the primary key from the form's data, we are only
# creating new instances
form.data[form.add_prefix(self._pk_field.name)] = None
# Remove the foreign key from the form's data
form.data[form.add_prefix(self.fk.name)] = None
if mutable is not None:
form.data._mutable = mutable
# Set the fk value here so that the form can do its validation.
fk_value = self.instance.pk
if self.fk.remote_field.field_name != self.fk.remote_field.model._meta.pk.name:
fk_value = getattr(self.instance, self.fk.remote_field.field_name)
fk_value = getattr(fk_value, 'pk', fk_value)
setattr(form.instance, self.fk.get_attname(), fk_value)
return form
@classmethod
def get_default_prefix(cls):
return cls.fk.remote_field.get_accessor_name(model=cls.model).replace('+', '')
def save_new(self, form, commit=True):
# Ensure the latest copy of the related instance is present on each
# form (it may have been saved after the formset was originally
# instantiated).
setattr(form.instance, self.fk.name, self.instance)
return super().save_new(form, commit=commit)
def add_fields(self, form, index):
super().add_fields(form, index)
if self._pk_field == self.fk:
name = self._pk_field.name
kwargs = {'pk_field': True}
else:
# The foreign key field might not be on the form, so we poke at the
# Model field to get the label, since we need that for error messages.
name = self.fk.name
kwargs = {
'label': getattr(form.fields.get(name), 'label', capfirst(self.fk.verbose_name))
}
# The InlineForeignKeyField assumes that the foreign key relation is
# based on the parent model's pk. If this isn't the case, set to_field
# to correctly resolve the initial form value.
if self.fk.remote_field.field_name != self.fk.remote_field.model._meta.pk.name:
kwargs['to_field'] = self.fk.remote_field.field_name
# If we're adding a new object, ignore a parent's auto-generated key
# as it will be regenerated on the save request.
if self.instance._state.adding:
if kwargs.get('to_field') is not None:
to_field = self.instance._meta.get_field(kwargs['to_field'])
else:
to_field = self.instance._meta.pk
if to_field.has_default():
setattr(self.instance, to_field.attname, None)
form.fields[name] = InlineForeignKeyField(self.instance, **kwargs)
def get_unique_error_message(self, unique_check):
unique_check = [field for field in unique_check if field != self.fk.name]
return super().get_unique_error_message(unique_check)
def _get_foreign_key(parent_model, model, fk_name=None, can_fail=False):
"""
Find and return the ForeignKey from model to parent if there is one
(return None if can_fail is True and no such field exists). If fk_name is
provided, assume it is the name of the ForeignKey field. Unless can_fail is
True, raise an exception if there isn't a ForeignKey from model to
parent_model.
"""
# avoid circular import
from django.db.models import ForeignKey
opts = model._meta
if fk_name:
fks_to_parent = [f for f in opts.fields if f.name == fk_name]
if len(fks_to_parent) == 1:
fk = fks_to_parent[0]
parent_list = parent_model._meta.get_parent_list()
if not isinstance(fk, ForeignKey) or (
# ForeignKey to proxy models.
fk.remote_field.model._meta.proxy and
fk.remote_field.model._meta.proxy_for_model not in parent_list
) or (
# ForeignKey to concrete models.
not fk.remote_field.model._meta.proxy and
fk.remote_field.model != parent_model and
fk.remote_field.model not in parent_list
):
raise ValueError(
"fk_name '%s' is not a ForeignKey to '%s'." % (fk_name, parent_model._meta.label)
)
elif not fks_to_parent:
raise ValueError(
"'%s' has no field named '%s'." % (model._meta.label, fk_name)
)
else:
# Try to discover what the ForeignKey from model to parent_model is
parent_list = parent_model._meta.get_parent_list()
fks_to_parent = [
f for f in opts.fields
if isinstance(f, ForeignKey) and (
f.remote_field.model == parent_model or
f.remote_field.model in parent_list or (
f.remote_field.model._meta.proxy and
f.remote_field.model._meta.proxy_for_model in parent_list
)
)
]
if len(fks_to_parent) == 1:
fk = fks_to_parent[0]
elif not fks_to_parent:
if can_fail:
return
raise ValueError(
"'%s' has no ForeignKey to '%s'." % (
model._meta.label,
parent_model._meta.label,
)
)
else:
raise ValueError(
"'%s' has more than one ForeignKey to '%s'. You must specify "
"a 'fk_name' attribute." % (
model._meta.label,
parent_model._meta.label,
)
)
return fk
def inlineformset_factory(parent_model, model, form=ModelForm,
formset=BaseInlineFormSet, fk_name=None,
fields=None, exclude=None, extra=3, can_order=False,
can_delete=True, max_num=None, formfield_callback=None,
widgets=None, validate_max=False, localized_fields=None,
labels=None, help_texts=None, error_messages=None,
min_num=None, validate_min=False, field_classes=None,
absolute_max=None, can_delete_extra=True):
"""
Return an ``InlineFormSet`` for the given kwargs.
``fk_name`` must be provided if ``model`` has more than one ``ForeignKey``
to ``parent_model``.
"""
fk = _get_foreign_key(parent_model, model, fk_name=fk_name)
# enforce a max_num=1 when the foreign key to the parent model is unique.
if fk.unique:
max_num = 1
kwargs = {
'form': form,
'formfield_callback': formfield_callback,
'formset': formset,
'extra': extra,
'can_delete': can_delete,
'can_order': can_order,
'fields': fields,
'exclude': exclude,
'min_num': min_num,
'max_num': max_num,
'widgets': widgets,
'validate_min': validate_min,
'validate_max': validate_max,
'localized_fields': localized_fields,
'labels': labels,
'help_texts': help_texts,
'error_messages': error_messages,
'field_classes': field_classes,
'absolute_max': absolute_max,
'can_delete_extra': can_delete_extra,
}
FormSet = modelformset_factory(model, **kwargs)
FormSet.fk = fk
return FormSet
# Fields #####################################################################
class InlineForeignKeyField(Field):
"""
A basic integer field that deals with validating the given value to a
given parent instance in an inline.
"""
widget = HiddenInput
default_error_messages = {
'invalid_choice': _('The inline value did not match the parent instance.'),
}
def __init__(self, parent_instance, *args, pk_field=False, to_field=None, **kwargs):
self.parent_instance = parent_instance
self.pk_field = pk_field
self.to_field = to_field
if self.parent_instance is not None:
if self.to_field:
kwargs["initial"] = getattr(self.parent_instance, self.to_field)
else:
kwargs["initial"] = self.parent_instance.pk
kwargs["required"] = False
super().__init__(*args, **kwargs)
def clean(self, value):
if value in self.empty_values:
if self.pk_field:
return None
# if there is no value act as we did before.
return self.parent_instance
# ensure the we compare the values as equal types.
if self.to_field:
orig = getattr(self.parent_instance, self.to_field)
else:
orig = self.parent_instance.pk
if str(value) != str(orig):
raise ValidationError(self.error_messages['invalid_choice'], code='invalid_choice')
return self.parent_instance
def has_changed(self, initial, data):
return False
class ModelChoiceIteratorValue:
def __init__(self, value, instance):
self.value = value
self.instance = instance
def __str__(self):
return str(self.value)
def __eq__(self, other):
if isinstance(other, ModelChoiceIteratorValue):
other = other.value
return self.value == other
class ModelChoiceIterator:
def __init__(self, field):
self.field = field
self.queryset = field.queryset
def __iter__(self):
if self.field.empty_label is not None:
yield ("", self.field.empty_label)
queryset = self.queryset
# Can't use iterator() when queryset uses prefetch_related()
if not queryset._prefetch_related_lookups:
queryset = queryset.iterator()
for obj in queryset:
yield self.choice(obj)
def __len__(self):
# count() adds a query but uses less memory since the QuerySet results
# won't be cached. In most cases, the choices will only be iterated on,
# and __len__() won't be called.
return self.queryset.count() + (1 if self.field.empty_label is not None else 0)
def __bool__(self):
return self.field.empty_label is not None or self.queryset.exists()
def choice(self, obj):
return (
ModelChoiceIteratorValue(self.field.prepare_value(obj), obj),
self.field.label_from_instance(obj),
)
class ModelChoiceField(ChoiceField):
"""A ChoiceField whose choices are a model QuerySet."""
# This class is a subclass of ChoiceField for purity, but it doesn't
# actually use any of ChoiceField's implementation.
default_error_messages = {
'invalid_choice': _('Select a valid choice. That choice is not one of'
' the available choices.'),
}
iterator = ModelChoiceIterator
def __init__(self, queryset, *, empty_label="---------",
required=True, widget=None, label=None, initial=None,
help_text='', to_field_name=None, limit_choices_to=None,
blank=False, **kwargs):
# Call Field instead of ChoiceField __init__() because we don't need
# ChoiceField.__init__().
Field.__init__(
self, required=required, widget=widget, label=label,
initial=initial, help_text=help_text, **kwargs
)
if (
(required and initial is not None) or
(isinstance(self.widget, RadioSelect) and not blank)
):
self.empty_label = None
else:
self.empty_label = empty_label
self.queryset = queryset
self.limit_choices_to = limit_choices_to # limit the queryset later.
self.to_field_name = to_field_name
def get_limit_choices_to(self):
"""
Return ``limit_choices_to`` for this form field.
If it is a callable, invoke it and return the result.
"""
if callable(self.limit_choices_to):
return self.limit_choices_to()
return self.limit_choices_to
def __deepcopy__(self, memo):
result = super(ChoiceField, self).__deepcopy__(memo)
# Need to force a new ModelChoiceIterator to be created, bug #11183
if self.queryset is not None:
result.queryset = self.queryset.all()
return result
def _get_queryset(self):
return self._queryset
def _set_queryset(self, queryset):
self._queryset = None if queryset is None else queryset.all()
self.widget.choices = self.choices
queryset = property(_get_queryset, _set_queryset)
# this method will be used to create object labels by the QuerySetIterator.
# Override it to customize the label.
def label_from_instance(self, obj):
"""
Convert objects into strings and generate the labels for the choices
presented by this object. Subclasses can override this method to
customize the display of the choices.
"""
return str(obj)
def _get_choices(self):
# If self._choices is set, then somebody must have manually set
# the property self.choices. In this case, just return self._choices.
if hasattr(self, '_choices'):
return self._choices
# Otherwise, execute the QuerySet in self.queryset to determine the
# choices dynamically. Return a fresh ModelChoiceIterator that has not been
# consumed. Note that we're instantiating a new ModelChoiceIterator *each*
# time _get_choices() is called (and, thus, each time self.choices is
# accessed) so that we can ensure the QuerySet has not been consumed. This
# construct might look complicated but it allows for lazy evaluation of
# the queryset.
return self.iterator(self)
choices = property(_get_choices, ChoiceField._set_choices)
def prepare_value(self, value):
if hasattr(value, '_meta'):
if self.to_field_name:
return value.serializable_value(self.to_field_name)
else:
return value.pk
return super().prepare_value(value)
def to_python(self, value):
if value in self.empty_values:
return None
try:
key = self.to_field_name or 'pk'
if isinstance(value, self.queryset.model):
value = getattr(value, key)
value = self.queryset.get(**{key: value})
except (ValueError, TypeError, self.queryset.model.DoesNotExist):
raise ValidationError(
self.error_messages['invalid_choice'],
code='invalid_choice',
params={'value': value},
)
return value
def validate(self, value):
return Field.validate(self, value)
def has_changed(self, initial, data):
if self.disabled:
return False
initial_value = initial if initial is not None else ''
data_value = data if data is not None else ''
return str(self.prepare_value(initial_value)) != str(data_value)
class ModelMultipleChoiceField(ModelChoiceField):
"""A MultipleChoiceField whose choices are a model QuerySet."""
widget = SelectMultiple
hidden_widget = MultipleHiddenInput
default_error_messages = {
'invalid_list': _('Enter a list of values.'),
'invalid_choice': _('Select a valid choice. %(value)s is not one of the'
' available choices.'),
'invalid_pk_value': _('“%(pk)s” is not a valid value.')
}
def __init__(self, queryset, **kwargs):
super().__init__(queryset, empty_label=None, **kwargs)
def to_python(self, value):
if not value:
return []
return list(self._check_values(value))
def clean(self, value):
value = self.prepare_value(value)
if self.required and not value:
raise ValidationError(self.error_messages['required'], code='required')
elif not self.required and not value:
return self.queryset.none()
if not isinstance(value, (list, tuple)):
raise ValidationError(
self.error_messages['invalid_list'],
code='invalid_list',
)
qs = self._check_values(value)
# Since this overrides the inherited ModelChoiceField.clean
# we run custom validators here
self.run_validators(value)
return qs
def _check_values(self, value):
"""
Given a list of possible PK values, return a QuerySet of the
corresponding objects. Raise a ValidationError if a given value is
invalid (not a valid PK, not in the queryset, etc.)
"""
key = self.to_field_name or 'pk'
# deduplicate given values to avoid creating many querysets or
# requiring the database backend deduplicate efficiently.
try:
value = frozenset(value)
except TypeError:
# list of lists isn't hashable, for example
raise ValidationError(
self.error_messages['invalid_list'],
code='invalid_list',
)
for pk in value:
try:
self.queryset.filter(**{key: pk})
except (ValueError, TypeError):
raise ValidationError(
self.error_messages['invalid_pk_value'],
code='invalid_pk_value',
params={'pk': pk},
)
qs = self.queryset.filter(**{'%s__in' % key: value})
pks = {str(getattr(o, key)) for o in qs}
for val in value:
if str(val) not in pks:
raise ValidationError(
self.error_messages['invalid_choice'],
code='invalid_choice',
params={'value': val},
)
return qs
def prepare_value(self, value):
if (hasattr(value, '__iter__') and
not isinstance(value, str) and
not hasattr(value, '_meta')):
prepare_value = super().prepare_value
return [prepare_value(v) for v in value]
return super().prepare_value(value)
def has_changed(self, initial, data):
if self.disabled:
return False
if initial is None:
initial = []
if data is None:
data = []
if len(initial) != len(data):
return True
initial_set = {str(value) for value in self.prepare_value(initial)}
data_set = {str(value) for value in data}
return data_set != initial_set
def modelform_defines_fields(form_class):
return hasattr(form_class, '_meta') and (
form_class._meta.fields is not None or
form_class._meta.exclude is not None
)
|
a3842756eef4fadd90b98b32e40719cbdb572eb6c2b291119e48d7212aeefb43 | """
The main QuerySet implementation. This provides the public API for the ORM.
"""
import copy
import operator
import warnings
from itertools import chain
import django
from django.conf import settings
from django.core import exceptions
from django.db import (
DJANGO_VERSION_PICKLE_KEY, IntegrityError, NotSupportedError, connections,
router, transaction,
)
from django.db.models import AutoField, DateField, DateTimeField, sql
from django.db.models.constants import LOOKUP_SEP
from django.db.models.deletion import Collector
from django.db.models.expressions import Case, Expression, F, Ref, Value, When
from django.db.models.functions import Cast, Trunc
from django.db.models.query_utils import FilteredRelation, Q
from django.db.models.sql.constants import CURSOR, GET_ITERATOR_CHUNK_SIZE
from django.db.models.utils import create_namedtuple_class, resolve_callables
from django.utils import timezone
from django.utils.functional import cached_property, partition
# The maximum number of results to fetch in a get() query.
MAX_GET_RESULTS = 21
# The maximum number of items to display in a QuerySet.__repr__
REPR_OUTPUT_SIZE = 20
class BaseIterable:
def __init__(self, queryset, chunked_fetch=False, chunk_size=GET_ITERATOR_CHUNK_SIZE):
self.queryset = queryset
self.chunked_fetch = chunked_fetch
self.chunk_size = chunk_size
class ModelIterable(BaseIterable):
"""Iterable that yields a model instance for each row."""
def __iter__(self):
queryset = self.queryset
db = queryset.db
compiler = queryset.query.get_compiler(using=db)
# Execute the query. This will also fill compiler.select, klass_info,
# and annotations.
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
select, klass_info, annotation_col_map = (compiler.select, compiler.klass_info,
compiler.annotation_col_map)
model_cls = klass_info['model']
select_fields = klass_info['select_fields']
model_fields_start, model_fields_end = select_fields[0], select_fields[-1] + 1
init_list = [f[0].target.attname
for f in select[model_fields_start:model_fields_end]]
related_populators = get_related_populators(klass_info, select, db)
known_related_objects = [
(field, related_objs, operator.attrgetter(*[
field.attname
if from_field == 'self' else
queryset.model._meta.get_field(from_field).attname
for from_field in field.from_fields
])) for field, related_objs in queryset._known_related_objects.items()
]
for row in compiler.results_iter(results):
obj = model_cls.from_db(db, init_list, row[model_fields_start:model_fields_end])
for rel_populator in related_populators:
rel_populator.populate(row, obj)
if annotation_col_map:
for attr_name, col_pos in annotation_col_map.items():
setattr(obj, attr_name, row[col_pos])
# Add the known related objects to the model.
for field, rel_objs, rel_getter in known_related_objects:
# Avoid overwriting objects loaded by, e.g., select_related().
if field.is_cached(obj):
continue
rel_obj_id = rel_getter(obj)
try:
rel_obj = rel_objs[rel_obj_id]
except KeyError:
pass # May happen in qs1 | qs2 scenarios.
else:
setattr(obj, field.name, rel_obj)
yield obj
class ValuesIterable(BaseIterable):
"""
Iterable returned by QuerySet.values() that yields a dict for each row.
"""
def __iter__(self):
queryset = self.queryset
query = queryset.query
compiler = query.get_compiler(queryset.db)
# extra(select=...) cols are always at the start of the row.
names = [
*query.extra_select,
*query.values_select,
*query.annotation_select,
]
indexes = range(len(names))
for row in compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size):
yield {names[i]: row[i] for i in indexes}
class ValuesListIterable(BaseIterable):
"""
Iterable returned by QuerySet.values_list(flat=False) that yields a tuple
for each row.
"""
def __iter__(self):
queryset = self.queryset
query = queryset.query
compiler = query.get_compiler(queryset.db)
if queryset._fields:
# extra(select=...) cols are always at the start of the row.
names = [
*query.extra_select,
*query.values_select,
*query.annotation_select,
]
fields = [*queryset._fields, *(f for f in query.annotation_select if f not in queryset._fields)]
if fields != names:
# Reorder according to fields.
index_map = {name: idx for idx, name in enumerate(names)}
rowfactory = operator.itemgetter(*[index_map[f] for f in fields])
return map(
rowfactory,
compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
)
return compiler.results_iter(tuple_expected=True, chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
class NamedValuesListIterable(ValuesListIterable):
"""
Iterable returned by QuerySet.values_list(named=True) that yields a
namedtuple for each row.
"""
def __iter__(self):
queryset = self.queryset
if queryset._fields:
names = queryset._fields
else:
query = queryset.query
names = [*query.extra_select, *query.values_select, *query.annotation_select]
tuple_class = create_namedtuple_class(*names)
new = tuple.__new__
for row in super().__iter__():
yield new(tuple_class, row)
class FlatValuesListIterable(BaseIterable):
"""
Iterable returned by QuerySet.values_list(flat=True) that yields single
values.
"""
def __iter__(self):
queryset = self.queryset
compiler = queryset.query.get_compiler(queryset.db)
for row in compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size):
yield row[0]
class QuerySet:
"""Represent a lazy database lookup for a set of objects."""
def __init__(self, model=None, query=None, using=None, hints=None):
self.model = model
self._db = using
self._hints = hints or {}
self._query = query or sql.Query(self.model)
self._result_cache = None
self._sticky_filter = False
self._for_write = False
self._prefetch_related_lookups = ()
self._prefetch_done = False
self._known_related_objects = {} # {rel_field: {pk: rel_obj}}
self._iterable_class = ModelIterable
self._fields = None
self._defer_next_filter = False
self._deferred_filter = None
@property
def query(self):
if self._deferred_filter:
negate, args, kwargs = self._deferred_filter
self._filter_or_exclude_inplace(negate, args, kwargs)
self._deferred_filter = None
return self._query
@query.setter
def query(self, value):
if value.values_select:
self._iterable_class = ValuesIterable
self._query = value
def as_manager(cls):
# Address the circular dependency between `Queryset` and `Manager`.
from django.db.models.manager import Manager
manager = Manager.from_queryset(cls)()
manager._built_with_as_manager = True
return manager
as_manager.queryset_only = True
as_manager = classmethod(as_manager)
########################
# PYTHON MAGIC METHODS #
########################
def __deepcopy__(self, memo):
"""Don't populate the QuerySet's cache."""
obj = self.__class__()
for k, v in self.__dict__.items():
if k == '_result_cache':
obj.__dict__[k] = None
else:
obj.__dict__[k] = copy.deepcopy(v, memo)
return obj
def __getstate__(self):
# Force the cache to be fully populated.
self._fetch_all()
return {**self.__dict__, DJANGO_VERSION_PICKLE_KEY: django.__version__}
def __setstate__(self, state):
pickled_version = state.get(DJANGO_VERSION_PICKLE_KEY)
if pickled_version:
if pickled_version != django.__version__:
warnings.warn(
"Pickled queryset instance's Django version %s does not "
"match the current version %s."
% (pickled_version, django.__version__),
RuntimeWarning,
stacklevel=2,
)
else:
warnings.warn(
"Pickled queryset instance's Django version is not specified.",
RuntimeWarning,
stacklevel=2,
)
self.__dict__.update(state)
def __repr__(self):
data = list(self[:REPR_OUTPUT_SIZE + 1])
if len(data) > REPR_OUTPUT_SIZE:
data[-1] = "...(remaining elements truncated)..."
return '<%s %r>' % (self.__class__.__name__, data)
def __len__(self):
self._fetch_all()
return len(self._result_cache)
def __iter__(self):
"""
The queryset iterator protocol uses three nested iterators in the
default case:
1. sql.compiler.execute_sql()
- Returns 100 rows at time (constants.GET_ITERATOR_CHUNK_SIZE)
using cursor.fetchmany(). This part is responsible for
doing some column masking, and returning the rows in chunks.
2. sql.compiler.results_iter()
- Returns one row at time. At this point the rows are still just
tuples. In some cases the return values are converted to
Python values at this location.
3. self.iterator()
- Responsible for turning the rows into model objects.
"""
self._fetch_all()
return iter(self._result_cache)
def __bool__(self):
self._fetch_all()
return bool(self._result_cache)
def __getitem__(self, k):
"""Retrieve an item or slice from the set of results."""
if not isinstance(k, (int, slice)):
raise TypeError(
'QuerySet indices must be integers or slices, not %s.'
% type(k).__name__
)
if (
(isinstance(k, int) and k < 0) or
(isinstance(k, slice) and (
(k.start is not None and k.start < 0) or
(k.stop is not None and k.stop < 0)
))
):
raise ValueError('Negative indexing is not supported.')
if self._result_cache is not None:
return self._result_cache[k]
if isinstance(k, slice):
qs = self._chain()
if k.start is not None:
start = int(k.start)
else:
start = None
if k.stop is not None:
stop = int(k.stop)
else:
stop = None
qs.query.set_limits(start, stop)
return list(qs)[::k.step] if k.step else qs
qs = self._chain()
qs.query.set_limits(k, k + 1)
qs._fetch_all()
return qs._result_cache[0]
def __class_getitem__(cls, *args, **kwargs):
return cls
def __and__(self, other):
self._merge_sanity_check(other)
if isinstance(other, EmptyQuerySet):
return other
if isinstance(self, EmptyQuerySet):
return self
combined = self._chain()
combined._merge_known_related_objects(other)
combined.query.combine(other.query, sql.AND)
return combined
def __or__(self, other):
self._merge_sanity_check(other)
if isinstance(self, EmptyQuerySet):
return other
if isinstance(other, EmptyQuerySet):
return self
query = self if self.query.can_filter() else self.model._base_manager.filter(pk__in=self.values('pk'))
combined = query._chain()
combined._merge_known_related_objects(other)
if not other.query.can_filter():
other = other.model._base_manager.filter(pk__in=other.values('pk'))
combined.query.combine(other.query, sql.OR)
return combined
####################################
# METHODS THAT DO DATABASE QUERIES #
####################################
def _iterator(self, use_chunked_fetch, chunk_size):
yield from self._iterable_class(self, chunked_fetch=use_chunked_fetch, chunk_size=chunk_size)
def iterator(self, chunk_size=2000):
"""
An iterator over the results from applying this QuerySet to the
database.
"""
if chunk_size <= 0:
raise ValueError('Chunk size must be strictly positive.')
use_chunked_fetch = not connections[self.db].settings_dict.get('DISABLE_SERVER_SIDE_CURSORS')
return self._iterator(use_chunked_fetch, chunk_size)
def aggregate(self, *args, **kwargs):
"""
Return a dictionary containing the calculations (aggregation)
over the current queryset.
If args is present the expression is passed as a kwarg using
the Aggregate object's default alias.
"""
if self.query.distinct_fields:
raise NotImplementedError("aggregate() + distinct(fields) not implemented.")
self._validate_values_are_expressions((*args, *kwargs.values()), method_name='aggregate')
for arg in args:
# The default_alias property raises TypeError if default_alias
# can't be set automatically or AttributeError if it isn't an
# attribute.
try:
arg.default_alias
except (AttributeError, TypeError):
raise TypeError("Complex aggregates require an alias")
kwargs[arg.default_alias] = arg
query = self.query.chain()
for (alias, aggregate_expr) in kwargs.items():
query.add_annotation(aggregate_expr, alias, is_summary=True)
annotation = query.annotations[alias]
if not annotation.contains_aggregate:
raise TypeError("%s is not an aggregate expression" % alias)
for expr in annotation.get_source_expressions():
if expr.contains_aggregate and isinstance(expr, Ref) and expr.refs in kwargs:
name = expr.refs
raise exceptions.FieldError(
"Cannot compute %s('%s'): '%s' is an aggregate"
% (annotation.name, name, name)
)
return query.get_aggregation(self.db, kwargs)
def count(self):
"""
Perform a SELECT COUNT() and return the number of records as an
integer.
If the QuerySet is already fully cached, return the length of the
cached results set to avoid multiple SELECT COUNT(*) calls.
"""
if self._result_cache is not None:
return len(self._result_cache)
return self.query.get_count(using=self.db)
def get(self, *args, **kwargs):
"""
Perform the query and return a single object matching the given
keyword arguments.
"""
if self.query.combinator and (args or kwargs):
raise NotSupportedError(
'Calling QuerySet.get(...) with filters after %s() is not '
'supported.' % self.query.combinator
)
clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
if self.query.can_filter() and not self.query.distinct_fields:
clone = clone.order_by()
limit = None
if not clone.query.select_for_update or connections[clone.db].features.supports_select_for_update_with_limit:
limit = MAX_GET_RESULTS
clone.query.set_limits(high=limit)
num = len(clone)
if num == 1:
return clone._result_cache[0]
if not num:
raise self.model.DoesNotExist(
"%s matching query does not exist." %
self.model._meta.object_name
)
raise self.model.MultipleObjectsReturned(
'get() returned more than one %s -- it returned %s!' % (
self.model._meta.object_name,
num if not limit or num < limit else 'more than %s' % (limit - 1),
)
)
def create(self, **kwargs):
"""
Create a new object with the given kwargs, saving it to the database
and returning the created object.
"""
obj = self.model(**kwargs)
self._for_write = True
obj.save(force_insert=True, using=self.db)
return obj
def _prepare_for_bulk_create(self, objs):
for obj in objs:
if obj.pk is None:
# Populate new PK values.
obj.pk = obj._meta.pk.get_pk_value_on_save(obj)
obj._prepare_related_fields_for_save(operation_name='bulk_create')
def bulk_create(self, objs, batch_size=None, ignore_conflicts=False):
"""
Insert each of the instances into the database. Do *not* call
save() on each of the instances, do not send any pre/post_save
signals, and do not set the primary key attribute if it is an
autoincrement field (except if features.can_return_rows_from_bulk_insert=True).
Multi-table models are not supported.
"""
# When you bulk insert you don't get the primary keys back (if it's an
# autoincrement, except if can_return_rows_from_bulk_insert=True), so
# you can't insert into the child tables which references this. There
# are two workarounds:
# 1) This could be implemented if you didn't have an autoincrement pk
# 2) You could do it by doing O(n) normal inserts into the parent
# tables to get the primary keys back and then doing a single bulk
# insert into the childmost table.
# We currently set the primary keys on the objects when using
# PostgreSQL via the RETURNING ID clause. It should be possible for
# Oracle as well, but the semantics for extracting the primary keys is
# trickier so it's not done yet.
if batch_size is not None and batch_size <= 0:
raise ValueError('Batch size must be a positive integer.')
# Check that the parents share the same concrete model with the our
# model to detect the inheritance pattern ConcreteGrandParent ->
# MultiTableParent -> ProxyChild. Simply checking self.model._meta.proxy
# would not identify that case as involving multiple tables.
for parent in self.model._meta.get_parent_list():
if parent._meta.concrete_model is not self.model._meta.concrete_model:
raise ValueError("Can't bulk create a multi-table inherited model")
if not objs:
return objs
self._for_write = True
connection = connections[self.db]
opts = self.model._meta
fields = opts.concrete_fields
objs = list(objs)
self._prepare_for_bulk_create(objs)
with transaction.atomic(using=self.db, savepoint=False):
objs_with_pk, objs_without_pk = partition(lambda o: o.pk is None, objs)
if objs_with_pk:
returned_columns = self._batched_insert(
objs_with_pk, fields, batch_size, ignore_conflicts=ignore_conflicts,
)
for obj_with_pk, results in zip(objs_with_pk, returned_columns):
for result, field in zip(results, opts.db_returning_fields):
if field != opts.pk:
setattr(obj_with_pk, field.attname, result)
for obj_with_pk in objs_with_pk:
obj_with_pk._state.adding = False
obj_with_pk._state.db = self.db
if objs_without_pk:
fields = [f for f in fields if not isinstance(f, AutoField)]
returned_columns = self._batched_insert(
objs_without_pk, fields, batch_size, ignore_conflicts=ignore_conflicts,
)
if connection.features.can_return_rows_from_bulk_insert and not ignore_conflicts:
assert len(returned_columns) == len(objs_without_pk)
for obj_without_pk, results in zip(objs_without_pk, returned_columns):
for result, field in zip(results, opts.db_returning_fields):
setattr(obj_without_pk, field.attname, result)
obj_without_pk._state.adding = False
obj_without_pk._state.db = self.db
return objs
def bulk_update(self, objs, fields, batch_size=None):
"""
Update the given fields in each of the given objects in the database.
"""
if batch_size is not None and batch_size < 0:
raise ValueError('Batch size must be a positive integer.')
if not fields:
raise ValueError('Field names must be given to bulk_update().')
objs = tuple(objs)
if any(obj.pk is None for obj in objs):
raise ValueError('All bulk_update() objects must have a primary key set.')
fields = [self.model._meta.get_field(name) for name in fields]
if any(not f.concrete or f.many_to_many for f in fields):
raise ValueError('bulk_update() can only be used with concrete fields.')
if any(f.primary_key for f in fields):
raise ValueError('bulk_update() cannot be used with primary key fields.')
if not objs:
return 0
# PK is used twice in the resulting update query, once in the filter
# and once in the WHEN. Each field will also have one CAST.
max_batch_size = connections[self.db].ops.bulk_batch_size(['pk', 'pk'] + fields, objs)
batch_size = min(batch_size, max_batch_size) if batch_size else max_batch_size
requires_casting = connections[self.db].features.requires_casted_case_in_updates
batches = (objs[i:i + batch_size] for i in range(0, len(objs), batch_size))
updates = []
for batch_objs in batches:
update_kwargs = {}
for field in fields:
when_statements = []
for obj in batch_objs:
attr = getattr(obj, field.attname)
if not isinstance(attr, Expression):
attr = Value(attr, output_field=field)
when_statements.append(When(pk=obj.pk, then=attr))
case_statement = Case(*when_statements, output_field=field)
if requires_casting:
case_statement = Cast(case_statement, output_field=field)
update_kwargs[field.attname] = case_statement
updates.append(([obj.pk for obj in batch_objs], update_kwargs))
rows_updated = 0
with transaction.atomic(using=self.db, savepoint=False):
for pks, update_kwargs in updates:
rows_updated += self.filter(pk__in=pks).update(**update_kwargs)
return rows_updated
bulk_update.alters_data = True
def get_or_create(self, defaults=None, **kwargs):
"""
Look up an object with the given kwargs, creating one if necessary.
Return a tuple of (object, created), where created is a boolean
specifying whether an object was created.
"""
# The get() needs to be targeted at the write database in order
# to avoid potential transaction consistency problems.
self._for_write = True
try:
return self.get(**kwargs), False
except self.model.DoesNotExist:
params = self._extract_model_params(defaults, **kwargs)
# Try to create an object using passed params.
try:
with transaction.atomic(using=self.db):
params = dict(resolve_callables(params))
return self.create(**params), True
except IntegrityError:
try:
return self.get(**kwargs), False
except self.model.DoesNotExist:
pass
raise
def update_or_create(self, defaults=None, **kwargs):
"""
Look up an object with the given kwargs, updating one with defaults
if it exists, otherwise create a new one.
Return a tuple (object, created), where created is a boolean
specifying whether an object was created.
"""
defaults = defaults or {}
self._for_write = True
with transaction.atomic(using=self.db):
# Lock the row so that a concurrent update is blocked until
# update_or_create() has performed its save.
obj, created = self.select_for_update().get_or_create(defaults, **kwargs)
if created:
return obj, created
for k, v in resolve_callables(defaults):
setattr(obj, k, v)
obj.save(using=self.db)
return obj, False
def _extract_model_params(self, defaults, **kwargs):
"""
Prepare `params` for creating a model instance based on the given
kwargs; for use by get_or_create().
"""
defaults = defaults or {}
params = {k: v for k, v in kwargs.items() if LOOKUP_SEP not in k}
params.update(defaults)
property_names = self.model._meta._property_names
invalid_params = []
for param in params:
try:
self.model._meta.get_field(param)
except exceptions.FieldDoesNotExist:
# It's okay to use a model's property if it has a setter.
if not (param in property_names and getattr(self.model, param).fset):
invalid_params.append(param)
if invalid_params:
raise exceptions.FieldError(
"Invalid field name(s) for model %s: '%s'." % (
self.model._meta.object_name,
"', '".join(sorted(invalid_params)),
))
return params
def _earliest(self, *fields):
"""
Return the earliest object according to fields (if given) or by the
model's Meta.get_latest_by.
"""
if fields:
order_by = fields
else:
order_by = getattr(self.model._meta, 'get_latest_by')
if order_by and not isinstance(order_by, (tuple, list)):
order_by = (order_by,)
if order_by is None:
raise ValueError(
"earliest() and latest() require either fields as positional "
"arguments or 'get_latest_by' in the model's Meta."
)
obj = self._chain()
obj.query.set_limits(high=1)
obj.query.clear_ordering(force=True)
obj.query.add_ordering(*order_by)
return obj.get()
def earliest(self, *fields):
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
return self._earliest(*fields)
def latest(self, *fields):
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
return self.reverse()._earliest(*fields)
def first(self):
"""Return the first object of a query or None if no match is found."""
for obj in (self if self.ordered else self.order_by('pk'))[:1]:
return obj
def last(self):
"""Return the last object of a query or None if no match is found."""
for obj in (self.reverse() if self.ordered else self.order_by('-pk'))[:1]:
return obj
def in_bulk(self, id_list=None, *, field_name='pk'):
"""
Return a dictionary mapping each of the given IDs to the object with
that ID. If `id_list` isn't provided, evaluate the entire QuerySet.
"""
if self.query.is_sliced:
raise TypeError("Cannot use 'limit' or 'offset' with in_bulk().")
opts = self.model._meta
unique_fields = [
constraint.fields[0]
for constraint in opts.total_unique_constraints
if len(constraint.fields) == 1
]
if (
field_name != 'pk' and
not opts.get_field(field_name).unique and
field_name not in unique_fields and
self.query.distinct_fields != (field_name,)
):
raise ValueError("in_bulk()'s field_name must be a unique field but %r isn't." % field_name)
if id_list is not None:
if not id_list:
return {}
filter_key = '{}__in'.format(field_name)
batch_size = connections[self.db].features.max_query_params
id_list = tuple(id_list)
# If the database has a limit on the number of query parameters
# (e.g. SQLite), retrieve objects in batches if necessary.
if batch_size and batch_size < len(id_list):
qs = ()
for offset in range(0, len(id_list), batch_size):
batch = id_list[offset:offset + batch_size]
qs += tuple(self.filter(**{filter_key: batch}).order_by())
else:
qs = self.filter(**{filter_key: id_list}).order_by()
else:
qs = self._chain()
return {getattr(obj, field_name): obj for obj in qs}
def delete(self):
"""Delete the records in the current QuerySet."""
self._not_support_combined_queries('delete')
if self.query.is_sliced:
raise TypeError("Cannot use 'limit' or 'offset' with delete().")
if self.query.distinct or self.query.distinct_fields:
raise TypeError('Cannot call delete() after .distinct().')
if self._fields is not None:
raise TypeError("Cannot call delete() after .values() or .values_list()")
del_query = self._chain()
# The delete is actually 2 queries - one to find related objects,
# and one to delete. Make sure that the discovery of related
# objects is performed on the same database as the deletion.
del_query._for_write = True
# Disable non-supported fields.
del_query.query.select_for_update = False
del_query.query.select_related = False
del_query.query.clear_ordering(force=True)
collector = Collector(using=del_query.db)
collector.collect(del_query)
deleted, _rows_count = collector.delete()
# Clear the result cache, in case this QuerySet gets reused.
self._result_cache = None
return deleted, _rows_count
delete.alters_data = True
delete.queryset_only = True
def _raw_delete(self, using):
"""
Delete objects found from the given queryset in single direct SQL
query. No signals are sent and there is no protection for cascades.
"""
query = self.query.clone()
query.__class__ = sql.DeleteQuery
cursor = query.get_compiler(using).execute_sql(CURSOR)
if cursor:
with cursor:
return cursor.rowcount
return 0
_raw_delete.alters_data = True
def update(self, **kwargs):
"""
Update all elements in the current QuerySet, setting all the given
fields to the appropriate values.
"""
self._not_support_combined_queries('update')
if self.query.is_sliced:
raise TypeError('Cannot update a query once a slice has been taken.')
self._for_write = True
query = self.query.chain(sql.UpdateQuery)
query.add_update_values(kwargs)
# Clear any annotations so that they won't be present in subqueries.
query.annotations = {}
with transaction.mark_for_rollback_on_error(using=self.db):
rows = query.get_compiler(self.db).execute_sql(CURSOR)
self._result_cache = None
return rows
update.alters_data = True
def _update(self, values):
"""
A version of update() that accepts field objects instead of field names.
Used primarily for model saving and not intended for use by general
code (it requires too much poking around at model internals to be
useful at that level).
"""
if self.query.is_sliced:
raise TypeError('Cannot update a query once a slice has been taken.')
query = self.query.chain(sql.UpdateQuery)
query.add_update_fields(values)
# Clear any annotations so that they won't be present in subqueries.
query.annotations = {}
self._result_cache = None
return query.get_compiler(self.db).execute_sql(CURSOR)
_update.alters_data = True
_update.queryset_only = False
def exists(self):
if self._result_cache is None:
return self.query.has_results(using=self.db)
return bool(self._result_cache)
def contains(self, obj):
"""Return True if the queryset contains an object."""
self._not_support_combined_queries('contains')
if self._fields is not None:
raise TypeError(
'Cannot call QuerySet.contains() after .values() or '
'.values_list().'
)
try:
if obj._meta.concrete_model != self.model._meta.concrete_model:
return False
except AttributeError:
raise TypeError("'obj' must be a model instance.")
if obj.pk is None:
raise ValueError(
'QuerySet.contains() cannot be used on unsaved objects.'
)
if self._result_cache is not None:
return obj in self._result_cache
return self.filter(pk=obj.pk).exists()
def _prefetch_related_objects(self):
# This method can only be called once the result cache has been filled.
prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
self._prefetch_done = True
def explain(self, *, format=None, **options):
return self.query.explain(using=self.db, format=format, **options)
##################################################
# PUBLIC METHODS THAT RETURN A QUERYSET SUBCLASS #
##################################################
def raw(self, raw_query, params=(), translations=None, using=None):
if using is None:
using = self.db
qs = RawQuerySet(raw_query, model=self.model, params=params, translations=translations, using=using)
qs._prefetch_related_lookups = self._prefetch_related_lookups[:]
return qs
def _values(self, *fields, **expressions):
clone = self._chain()
if expressions:
clone = clone.annotate(**expressions)
clone._fields = fields
clone.query.set_values(fields)
return clone
def values(self, *fields, **expressions):
fields += tuple(expressions)
clone = self._values(*fields, **expressions)
clone._iterable_class = ValuesIterable
return clone
def values_list(self, *fields, flat=False, named=False):
if flat and named:
raise TypeError("'flat' and 'named' can't be used together.")
if flat and len(fields) > 1:
raise TypeError("'flat' is not valid when values_list is called with more than one field.")
field_names = {f for f in fields if not hasattr(f, 'resolve_expression')}
_fields = []
expressions = {}
counter = 1
for field in fields:
if hasattr(field, 'resolve_expression'):
field_id_prefix = getattr(field, 'default_alias', field.__class__.__name__.lower())
while True:
field_id = field_id_prefix + str(counter)
counter += 1
if field_id not in field_names:
break
expressions[field_id] = field
_fields.append(field_id)
else:
_fields.append(field)
clone = self._values(*_fields, **expressions)
clone._iterable_class = (
NamedValuesListIterable if named
else FlatValuesListIterable if flat
else ValuesListIterable
)
return clone
def dates(self, field_name, kind, order='ASC'):
"""
Return a list of date objects representing all available dates for
the given field_name, scoped to 'kind'.
"""
if kind not in ('year', 'month', 'week', 'day'):
raise ValueError("'kind' must be one of 'year', 'month', 'week', or 'day'.")
if order not in ('ASC', 'DESC'):
raise ValueError("'order' must be either 'ASC' or 'DESC'.")
return self.annotate(
datefield=Trunc(field_name, kind, output_field=DateField()),
plain_field=F(field_name)
).values_list(
'datefield', flat=True
).distinct().filter(plain_field__isnull=False).order_by(('-' if order == 'DESC' else '') + 'datefield')
# RemovedInDjango50Warning: when the deprecation ends, remove is_dst
# argument.
def datetimes(self, field_name, kind, order='ASC', tzinfo=None, is_dst=timezone.NOT_PASSED):
"""
Return a list of datetime objects representing all available
datetimes for the given field_name, scoped to 'kind'.
"""
if kind not in ('year', 'month', 'week', 'day', 'hour', 'minute', 'second'):
raise ValueError(
"'kind' must be one of 'year', 'month', 'week', 'day', "
"'hour', 'minute', or 'second'."
)
if order not in ('ASC', 'DESC'):
raise ValueError("'order' must be either 'ASC' or 'DESC'.")
if settings.USE_TZ:
if tzinfo is None:
tzinfo = timezone.get_current_timezone()
else:
tzinfo = None
return self.annotate(
datetimefield=Trunc(
field_name,
kind,
output_field=DateTimeField(),
tzinfo=tzinfo,
is_dst=is_dst,
),
plain_field=F(field_name)
).values_list(
'datetimefield', flat=True
).distinct().filter(plain_field__isnull=False).order_by(('-' if order == 'DESC' else '') + 'datetimefield')
def none(self):
"""Return an empty QuerySet."""
clone = self._chain()
clone.query.set_empty()
return clone
##################################################################
# PUBLIC METHODS THAT ALTER ATTRIBUTES AND RETURN A NEW QUERYSET #
##################################################################
def all(self):
"""
Return a new QuerySet that is a copy of the current one. This allows a
QuerySet to proxy for a model manager in some cases.
"""
return self._chain()
def filter(self, *args, **kwargs):
"""
Return a new QuerySet instance with the args ANDed to the existing
set.
"""
self._not_support_combined_queries('filter')
return self._filter_or_exclude(False, args, kwargs)
def exclude(self, *args, **kwargs):
"""
Return a new QuerySet instance with NOT (args) ANDed to the existing
set.
"""
self._not_support_combined_queries('exclude')
return self._filter_or_exclude(True, args, kwargs)
def _filter_or_exclude(self, negate, args, kwargs):
if (args or kwargs) and self.query.is_sliced:
raise TypeError('Cannot filter a query once a slice has been taken.')
clone = self._chain()
if self._defer_next_filter:
self._defer_next_filter = False
clone._deferred_filter = negate, args, kwargs
else:
clone._filter_or_exclude_inplace(negate, args, kwargs)
return clone
def _filter_or_exclude_inplace(self, negate, args, kwargs):
if negate:
self._query.add_q(~Q(*args, **kwargs))
else:
self._query.add_q(Q(*args, **kwargs))
def complex_filter(self, filter_obj):
"""
Return a new QuerySet instance with filter_obj added to the filters.
filter_obj can be a Q object or a dictionary of keyword lookup
arguments.
This exists to support framework features such as 'limit_choices_to',
and usually it will be more natural to use other methods.
"""
if isinstance(filter_obj, Q):
clone = self._chain()
clone.query.add_q(filter_obj)
return clone
else:
return self._filter_or_exclude(False, args=(), kwargs=filter_obj)
def _combinator_query(self, combinator, *other_qs, all=False):
# Clone the query to inherit the select list and everything
clone = self._chain()
# Clear limits and ordering so they can be reapplied
clone.query.clear_ordering(force=True)
clone.query.clear_limits()
clone.query.combined_queries = (self.query,) + tuple(qs.query for qs in other_qs)
clone.query.combinator = combinator
clone.query.combinator_all = all
return clone
def union(self, *other_qs, all=False):
# If the query is an EmptyQuerySet, combine all nonempty querysets.
if isinstance(self, EmptyQuerySet):
qs = [q for q in other_qs if not isinstance(q, EmptyQuerySet)]
if not qs:
return self
if len(qs) == 1:
return qs[0]
return qs[0]._combinator_query('union', *qs[1:], all=all)
return self._combinator_query('union', *other_qs, all=all)
def intersection(self, *other_qs):
# If any query is an EmptyQuerySet, return it.
if isinstance(self, EmptyQuerySet):
return self
for other in other_qs:
if isinstance(other, EmptyQuerySet):
return other
return self._combinator_query('intersection', *other_qs)
def difference(self, *other_qs):
# If the query is an EmptyQuerySet, return it.
if isinstance(self, EmptyQuerySet):
return self
return self._combinator_query('difference', *other_qs)
def select_for_update(self, nowait=False, skip_locked=False, of=(), no_key=False):
"""
Return a new QuerySet instance that will select objects with a
FOR UPDATE lock.
"""
if nowait and skip_locked:
raise ValueError('The nowait option cannot be used with skip_locked.')
obj = self._chain()
obj._for_write = True
obj.query.select_for_update = True
obj.query.select_for_update_nowait = nowait
obj.query.select_for_update_skip_locked = skip_locked
obj.query.select_for_update_of = of
obj.query.select_for_no_key_update = no_key
return obj
def select_related(self, *fields):
"""
Return a new QuerySet instance that will select related objects.
If fields are specified, they must be ForeignKey fields and only those
related objects are included in the selection.
If select_related(None) is called, clear the list.
"""
self._not_support_combined_queries('select_related')
if self._fields is not None:
raise TypeError("Cannot call select_related() after .values() or .values_list()")
obj = self._chain()
if fields == (None,):
obj.query.select_related = False
elif fields:
obj.query.add_select_related(fields)
else:
obj.query.select_related = True
return obj
def prefetch_related(self, *lookups):
"""
Return a new QuerySet instance that will prefetch the specified
Many-To-One and Many-To-Many related objects when the QuerySet is
evaluated.
When prefetch_related() is called more than once, append to the list of
prefetch lookups. If prefetch_related(None) is called, clear the list.
"""
self._not_support_combined_queries('prefetch_related')
clone = self._chain()
if lookups == (None,):
clone._prefetch_related_lookups = ()
else:
for lookup in lookups:
if isinstance(lookup, Prefetch):
lookup = lookup.prefetch_to
lookup = lookup.split(LOOKUP_SEP, 1)[0]
if lookup in self.query._filtered_relations:
raise ValueError('prefetch_related() is not supported with FilteredRelation.')
clone._prefetch_related_lookups = clone._prefetch_related_lookups + lookups
return clone
def annotate(self, *args, **kwargs):
"""
Return a query set in which the returned objects have been annotated
with extra data or aggregations.
"""
self._not_support_combined_queries('annotate')
return self._annotate(args, kwargs, select=True)
def alias(self, *args, **kwargs):
"""
Return a query set with added aliases for extra data or aggregations.
"""
self._not_support_combined_queries('alias')
return self._annotate(args, kwargs, select=False)
def _annotate(self, args, kwargs, select=True):
self._validate_values_are_expressions(args + tuple(kwargs.values()), method_name='annotate')
annotations = {}
for arg in args:
# The default_alias property may raise a TypeError.
try:
if arg.default_alias in kwargs:
raise ValueError("The named annotation '%s' conflicts with the "
"default name for another annotation."
% arg.default_alias)
except TypeError:
raise TypeError("Complex annotations require an alias")
annotations[arg.default_alias] = arg
annotations.update(kwargs)
clone = self._chain()
names = self._fields
if names is None:
names = set(chain.from_iterable(
(field.name, field.attname) if hasattr(field, 'attname') else (field.name,)
for field in self.model._meta.get_fields()
))
for alias, annotation in annotations.items():
if alias in names:
raise ValueError("The annotation '%s' conflicts with a field on "
"the model." % alias)
if isinstance(annotation, FilteredRelation):
clone.query.add_filtered_relation(annotation, alias)
else:
clone.query.add_annotation(
annotation, alias, is_summary=False, select=select,
)
for alias, annotation in clone.query.annotations.items():
if alias in annotations and annotation.contains_aggregate:
if clone._fields is None:
clone.query.group_by = True
else:
clone.query.set_group_by()
break
return clone
def order_by(self, *field_names):
"""Return a new QuerySet instance with the ordering changed."""
if self.query.is_sliced:
raise TypeError('Cannot reorder a query once a slice has been taken.')
obj = self._chain()
obj.query.clear_ordering(force=True, clear_default=False)
obj.query.add_ordering(*field_names)
return obj
def distinct(self, *field_names):
"""
Return a new QuerySet instance that will select only distinct results.
"""
self._not_support_combined_queries('distinct')
if self.query.is_sliced:
raise TypeError('Cannot create distinct fields once a slice has been taken.')
obj = self._chain()
obj.query.add_distinct_fields(*field_names)
return obj
def extra(self, select=None, where=None, params=None, tables=None,
order_by=None, select_params=None):
"""Add extra SQL fragments to the query."""
self._not_support_combined_queries('extra')
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
clone = self._chain()
clone.query.add_extra(select, select_params, where, params, tables, order_by)
return clone
def reverse(self):
"""Reverse the ordering of the QuerySet."""
if self.query.is_sliced:
raise TypeError('Cannot reverse a query once a slice has been taken.')
clone = self._chain()
clone.query.standard_ordering = not clone.query.standard_ordering
return clone
def defer(self, *fields):
"""
Defer the loading of data for certain fields until they are accessed.
Add the set of deferred fields to any existing set of deferred fields.
The only exception to this is if None is passed in as the only
parameter, in which case removal all deferrals.
"""
self._not_support_combined_queries('defer')
if self._fields is not None:
raise TypeError("Cannot call defer() after .values() or .values_list()")
clone = self._chain()
if fields == (None,):
clone.query.clear_deferred_loading()
else:
clone.query.add_deferred_loading(fields)
return clone
def only(self, *fields):
"""
Essentially, the opposite of defer(). Only the fields passed into this
method and that are not already specified as deferred are loaded
immediately when the queryset is evaluated.
"""
self._not_support_combined_queries('only')
if self._fields is not None:
raise TypeError("Cannot call only() after .values() or .values_list()")
if fields == (None,):
# Can only pass None to defer(), not only(), as the rest option.
# That won't stop people trying to do this, so let's be explicit.
raise TypeError("Cannot pass None as an argument to only().")
for field in fields:
field = field.split(LOOKUP_SEP, 1)[0]
if field in self.query._filtered_relations:
raise ValueError('only() is not supported with FilteredRelation.')
clone = self._chain()
clone.query.add_immediate_loading(fields)
return clone
def using(self, alias):
"""Select which database this QuerySet should execute against."""
clone = self._chain()
clone._db = alias
return clone
###################################
# PUBLIC INTROSPECTION ATTRIBUTES #
###################################
@property
def ordered(self):
"""
Return True if the QuerySet is ordered -- i.e. has an order_by()
clause or a default ordering on the model (or is empty).
"""
if isinstance(self, EmptyQuerySet):
return True
if self.query.extra_order_by or self.query.order_by:
return True
elif (
self.query.default_ordering and
self.query.get_meta().ordering and
# A default ordering doesn't affect GROUP BY queries.
not self.query.group_by
):
return True
else:
return False
@property
def db(self):
"""Return the database used if this query is executed now."""
if self._for_write:
return self._db or router.db_for_write(self.model, **self._hints)
return self._db or router.db_for_read(self.model, **self._hints)
###################
# PRIVATE METHODS #
###################
def _insert(self, objs, fields, returning_fields=None, raw=False, using=None, ignore_conflicts=False):
"""
Insert a new record for the given model. This provides an interface to
the InsertQuery class and is how Model.save() is implemented.
"""
self._for_write = True
if using is None:
using = self.db
query = sql.InsertQuery(self.model, ignore_conflicts=ignore_conflicts)
query.insert_values(fields, objs, raw=raw)
return query.get_compiler(using=using).execute_sql(returning_fields)
_insert.alters_data = True
_insert.queryset_only = False
def _batched_insert(self, objs, fields, batch_size, ignore_conflicts=False):
"""
Helper method for bulk_create() to insert objs one batch at a time.
"""
if ignore_conflicts and not connections[self.db].features.supports_ignore_conflicts:
raise NotSupportedError('This database backend does not support ignoring conflicts.')
ops = connections[self.db].ops
max_batch_size = max(ops.bulk_batch_size(fields, objs), 1)
batch_size = min(batch_size, max_batch_size) if batch_size else max_batch_size
inserted_rows = []
bulk_return = connections[self.db].features.can_return_rows_from_bulk_insert
for item in [objs[i:i + batch_size] for i in range(0, len(objs), batch_size)]:
if bulk_return and not ignore_conflicts:
inserted_rows.extend(self._insert(
item, fields=fields, using=self.db,
returning_fields=self.model._meta.db_returning_fields,
ignore_conflicts=ignore_conflicts,
))
else:
self._insert(item, fields=fields, using=self.db, ignore_conflicts=ignore_conflicts)
return inserted_rows
def _chain(self):
"""
Return a copy of the current QuerySet that's ready for another
operation.
"""
obj = self._clone()
if obj._sticky_filter:
obj.query.filter_is_sticky = True
obj._sticky_filter = False
return obj
def _clone(self):
"""
Return a copy of the current QuerySet. A lightweight alternative
to deepcopy().
"""
c = self.__class__(model=self.model, query=self.query.chain(), using=self._db, hints=self._hints)
c._sticky_filter = self._sticky_filter
c._for_write = self._for_write
c._prefetch_related_lookups = self._prefetch_related_lookups[:]
c._known_related_objects = self._known_related_objects
c._iterable_class = self._iterable_class
c._fields = self._fields
return c
def _fetch_all(self):
if self._result_cache is None:
self._result_cache = list(self._iterable_class(self))
if self._prefetch_related_lookups and not self._prefetch_done:
self._prefetch_related_objects()
def _next_is_sticky(self):
"""
Indicate that the next filter call and the one following that should
be treated as a single filter. This is only important when it comes to
determining when to reuse tables for many-to-many filters. Required so
that we can filter naturally on the results of related managers.
This doesn't return a clone of the current QuerySet (it returns
"self"). The method is only used internally and should be immediately
followed by a filter() that does create a clone.
"""
self._sticky_filter = True
return self
def _merge_sanity_check(self, other):
"""Check that two QuerySet classes may be merged."""
if self._fields is not None and (
set(self.query.values_select) != set(other.query.values_select) or
set(self.query.extra_select) != set(other.query.extra_select) or
set(self.query.annotation_select) != set(other.query.annotation_select)):
raise TypeError(
"Merging '%s' classes must involve the same values in each case."
% self.__class__.__name__
)
def _merge_known_related_objects(self, other):
"""
Keep track of all known related objects from either QuerySet instance.
"""
for field, objects in other._known_related_objects.items():
self._known_related_objects.setdefault(field, {}).update(objects)
def resolve_expression(self, *args, **kwargs):
if self._fields and len(self._fields) > 1:
# values() queryset can only be used as nested queries
# if they are set up to select only a single field.
raise TypeError('Cannot use multi-field values as a filter value.')
query = self.query.resolve_expression(*args, **kwargs)
query._db = self._db
return query
resolve_expression.queryset_only = True
def _add_hints(self, **hints):
"""
Update hinting information for use by routers. Add new key/values or
overwrite existing key/values.
"""
self._hints.update(hints)
def _has_filters(self):
"""
Check if this QuerySet has any filtering going on. This isn't
equivalent with checking if all objects are present in results, for
example, qs[1:]._has_filters() -> False.
"""
return self.query.has_filters()
@staticmethod
def _validate_values_are_expressions(values, method_name):
invalid_args = sorted(str(arg) for arg in values if not hasattr(arg, 'resolve_expression'))
if invalid_args:
raise TypeError(
'QuerySet.%s() received non-expression(s): %s.' % (
method_name,
', '.join(invalid_args),
)
)
def _not_support_combined_queries(self, operation_name):
if self.query.combinator:
raise NotSupportedError(
'Calling QuerySet.%s() after %s() is not supported.'
% (operation_name, self.query.combinator)
)
class InstanceCheckMeta(type):
def __instancecheck__(self, instance):
return isinstance(instance, QuerySet) and instance.query.is_empty()
class EmptyQuerySet(metaclass=InstanceCheckMeta):
"""
Marker class to checking if a queryset is empty by .none():
isinstance(qs.none(), EmptyQuerySet) -> True
"""
def __init__(self, *args, **kwargs):
raise TypeError("EmptyQuerySet can't be instantiated")
class RawQuerySet:
"""
Provide an iterator which converts the results of raw SQL queries into
annotated model instances.
"""
def __init__(self, raw_query, model=None, query=None, params=(),
translations=None, using=None, hints=None):
self.raw_query = raw_query
self.model = model
self._db = using
self._hints = hints or {}
self.query = query or sql.RawQuery(sql=raw_query, using=self.db, params=params)
self.params = params
self.translations = translations or {}
self._result_cache = None
self._prefetch_related_lookups = ()
self._prefetch_done = False
def resolve_model_init_order(self):
"""Resolve the init field names and value positions."""
converter = connections[self.db].introspection.identifier_converter
model_init_fields = [f for f in self.model._meta.fields if converter(f.column) in self.columns]
annotation_fields = [(column, pos) for pos, column in enumerate(self.columns)
if column not in self.model_fields]
model_init_order = [self.columns.index(converter(f.column)) for f in model_init_fields]
model_init_names = [f.attname for f in model_init_fields]
return model_init_names, model_init_order, annotation_fields
def prefetch_related(self, *lookups):
"""Same as QuerySet.prefetch_related()"""
clone = self._clone()
if lookups == (None,):
clone._prefetch_related_lookups = ()
else:
clone._prefetch_related_lookups = clone._prefetch_related_lookups + lookups
return clone
def _prefetch_related_objects(self):
prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
self._prefetch_done = True
def _clone(self):
"""Same as QuerySet._clone()"""
c = self.__class__(
self.raw_query, model=self.model, query=self.query, params=self.params,
translations=self.translations, using=self._db, hints=self._hints
)
c._prefetch_related_lookups = self._prefetch_related_lookups[:]
return c
def _fetch_all(self):
if self._result_cache is None:
self._result_cache = list(self.iterator())
if self._prefetch_related_lookups and not self._prefetch_done:
self._prefetch_related_objects()
def __len__(self):
self._fetch_all()
return len(self._result_cache)
def __bool__(self):
self._fetch_all()
return bool(self._result_cache)
def __iter__(self):
self._fetch_all()
return iter(self._result_cache)
def iterator(self):
# Cache some things for performance reasons outside the loop.
db = self.db
compiler = connections[db].ops.compiler('SQLCompiler')(
self.query, connections[db], db
)
query = iter(self.query)
try:
model_init_names, model_init_pos, annotation_fields = self.resolve_model_init_order()
if self.model._meta.pk.attname not in model_init_names:
raise exceptions.FieldDoesNotExist(
'Raw query must include the primary key'
)
model_cls = self.model
fields = [self.model_fields.get(c) for c in self.columns]
converters = compiler.get_converters([
f.get_col(f.model._meta.db_table) if f else None for f in fields
])
if converters:
query = compiler.apply_converters(query, converters)
for values in query:
# Associate fields to values
model_init_values = [values[pos] for pos in model_init_pos]
instance = model_cls.from_db(db, model_init_names, model_init_values)
if annotation_fields:
for column, pos in annotation_fields:
setattr(instance, column, values[pos])
yield instance
finally:
# Done iterating the Query. If it has its own cursor, close it.
if hasattr(self.query, 'cursor') and self.query.cursor:
self.query.cursor.close()
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self.query)
def __getitem__(self, k):
return list(self)[k]
@property
def db(self):
"""Return the database used if this query is executed now."""
return self._db or router.db_for_read(self.model, **self._hints)
def using(self, alias):
"""Select the database this RawQuerySet should execute against."""
return RawQuerySet(
self.raw_query, model=self.model,
query=self.query.chain(using=alias),
params=self.params, translations=self.translations,
using=alias,
)
@cached_property
def columns(self):
"""
A list of model field names in the order they'll appear in the
query results.
"""
columns = self.query.get_columns()
# Adjust any column names which don't match field names
for (query_name, model_name) in self.translations.items():
# Ignore translations for nonexistent column names
try:
index = columns.index(query_name)
except ValueError:
pass
else:
columns[index] = model_name
return columns
@cached_property
def model_fields(self):
"""A dict mapping column names to model field names."""
converter = connections[self.db].introspection.identifier_converter
model_fields = {}
for field in self.model._meta.fields:
name, column = field.get_attname_column()
model_fields[converter(column)] = field
return model_fields
class Prefetch:
def __init__(self, lookup, queryset=None, to_attr=None):
# `prefetch_through` is the path we traverse to perform the prefetch.
self.prefetch_through = lookup
# `prefetch_to` is the path to the attribute that stores the result.
self.prefetch_to = lookup
if queryset is not None and (
isinstance(queryset, RawQuerySet) or (
hasattr(queryset, '_iterable_class') and
not issubclass(queryset._iterable_class, ModelIterable)
)
):
raise ValueError(
'Prefetch querysets cannot use raw(), values(), and '
'values_list().'
)
if to_attr:
self.prefetch_to = LOOKUP_SEP.join(lookup.split(LOOKUP_SEP)[:-1] + [to_attr])
self.queryset = queryset
self.to_attr = to_attr
def __getstate__(self):
obj_dict = self.__dict__.copy()
if self.queryset is not None:
queryset = self.queryset._chain()
# Prevent the QuerySet from being evaluated
queryset._result_cache = []
queryset._prefetch_done = True
obj_dict['queryset'] = queryset
return obj_dict
def add_prefix(self, prefix):
self.prefetch_through = prefix + LOOKUP_SEP + self.prefetch_through
self.prefetch_to = prefix + LOOKUP_SEP + self.prefetch_to
def get_current_prefetch_to(self, level):
return LOOKUP_SEP.join(self.prefetch_to.split(LOOKUP_SEP)[:level + 1])
def get_current_to_attr(self, level):
parts = self.prefetch_to.split(LOOKUP_SEP)
to_attr = parts[level]
as_attr = self.to_attr and level == len(parts) - 1
return to_attr, as_attr
def get_current_queryset(self, level):
if self.get_current_prefetch_to(level) == self.prefetch_to:
return self.queryset
return None
def __eq__(self, other):
if not isinstance(other, Prefetch):
return NotImplemented
return self.prefetch_to == other.prefetch_to
def __hash__(self):
return hash((self.__class__, self.prefetch_to))
def normalize_prefetch_lookups(lookups, prefix=None):
"""Normalize lookups into Prefetch objects."""
ret = []
for lookup in lookups:
if not isinstance(lookup, Prefetch):
lookup = Prefetch(lookup)
if prefix:
lookup.add_prefix(prefix)
ret.append(lookup)
return ret
def prefetch_related_objects(model_instances, *related_lookups):
"""
Populate prefetched object caches for a list of model instances based on
the lookups/Prefetch instances given.
"""
if not model_instances:
return # nothing to do
# We need to be able to dynamically add to the list of prefetch_related
# lookups that we look up (see below). So we need some book keeping to
# ensure we don't do duplicate work.
done_queries = {} # dictionary of things like 'foo__bar': [results]
auto_lookups = set() # we add to this as we go through.
followed_descriptors = set() # recursion protection
all_lookups = normalize_prefetch_lookups(reversed(related_lookups))
while all_lookups:
lookup = all_lookups.pop()
if lookup.prefetch_to in done_queries:
if lookup.queryset is not None:
raise ValueError("'%s' lookup was already seen with a different queryset. "
"You may need to adjust the ordering of your lookups." % lookup.prefetch_to)
continue
# Top level, the list of objects to decorate is the result cache
# from the primary QuerySet. It won't be for deeper levels.
obj_list = model_instances
through_attrs = lookup.prefetch_through.split(LOOKUP_SEP)
for level, through_attr in enumerate(through_attrs):
# Prepare main instances
if not obj_list:
break
prefetch_to = lookup.get_current_prefetch_to(level)
if prefetch_to in done_queries:
# Skip any prefetching, and any object preparation
obj_list = done_queries[prefetch_to]
continue
# Prepare objects:
good_objects = True
for obj in obj_list:
# Since prefetching can re-use instances, it is possible to have
# the same instance multiple times in obj_list, so obj might
# already be prepared.
if not hasattr(obj, '_prefetched_objects_cache'):
try:
obj._prefetched_objects_cache = {}
except (AttributeError, TypeError):
# Must be an immutable object from
# values_list(flat=True), for example (TypeError) or
# a QuerySet subclass that isn't returning Model
# instances (AttributeError), either in Django or a 3rd
# party. prefetch_related() doesn't make sense, so quit.
good_objects = False
break
if not good_objects:
break
# Descend down tree
# We assume that objects retrieved are homogeneous (which is the premise
# of prefetch_related), so what applies to first object applies to all.
first_obj = obj_list[0]
to_attr = lookup.get_current_to_attr(level)[0]
prefetcher, descriptor, attr_found, is_fetched = get_prefetcher(first_obj, through_attr, to_attr)
if not attr_found:
raise AttributeError("Cannot find '%s' on %s object, '%s' is an invalid "
"parameter to prefetch_related()" %
(through_attr, first_obj.__class__.__name__, lookup.prefetch_through))
if level == len(through_attrs) - 1 and prefetcher is None:
# Last one, this *must* resolve to something that supports
# prefetching, otherwise there is no point adding it and the
# developer asking for it has made a mistake.
raise ValueError("'%s' does not resolve to an item that supports "
"prefetching - this is an invalid parameter to "
"prefetch_related()." % lookup.prefetch_through)
obj_to_fetch = None
if prefetcher is not None:
obj_to_fetch = [obj for obj in obj_list if not is_fetched(obj)]
if obj_to_fetch:
obj_list, additional_lookups = prefetch_one_level(
obj_to_fetch,
prefetcher,
lookup,
level,
)
# We need to ensure we don't keep adding lookups from the
# same relationships to stop infinite recursion. So, if we
# are already on an automatically added lookup, don't add
# the new lookups from relationships we've seen already.
if not (prefetch_to in done_queries and lookup in auto_lookups and descriptor in followed_descriptors):
done_queries[prefetch_to] = obj_list
new_lookups = normalize_prefetch_lookups(reversed(additional_lookups), prefetch_to)
auto_lookups.update(new_lookups)
all_lookups.extend(new_lookups)
followed_descriptors.add(descriptor)
else:
# Either a singly related object that has already been fetched
# (e.g. via select_related), or hopefully some other property
# that doesn't support prefetching but needs to be traversed.
# We replace the current list of parent objects with the list
# of related objects, filtering out empty or missing values so
# that we can continue with nullable or reverse relations.
new_obj_list = []
for obj in obj_list:
if through_attr in getattr(obj, '_prefetched_objects_cache', ()):
# If related objects have been prefetched, use the
# cache rather than the object's through_attr.
new_obj = list(obj._prefetched_objects_cache.get(through_attr))
else:
try:
new_obj = getattr(obj, through_attr)
except exceptions.ObjectDoesNotExist:
continue
if new_obj is None:
continue
# We special-case `list` rather than something more generic
# like `Iterable` because we don't want to accidentally match
# user models that define __iter__.
if isinstance(new_obj, list):
new_obj_list.extend(new_obj)
else:
new_obj_list.append(new_obj)
obj_list = new_obj_list
def get_prefetcher(instance, through_attr, to_attr):
"""
For the attribute 'through_attr' on the given instance, find
an object that has a get_prefetch_queryset().
Return a 4 tuple containing:
(the object with get_prefetch_queryset (or None),
the descriptor object representing this relationship (or None),
a boolean that is False if the attribute was not found at all,
a function that takes an instance and returns a boolean that is True if
the attribute has already been fetched for that instance)
"""
def has_to_attr_attribute(instance):
return hasattr(instance, to_attr)
prefetcher = None
is_fetched = has_to_attr_attribute
# For singly related objects, we have to avoid getting the attribute
# from the object, as this will trigger the query. So we first try
# on the class, in order to get the descriptor object.
rel_obj_descriptor = getattr(instance.__class__, through_attr, None)
if rel_obj_descriptor is None:
attr_found = hasattr(instance, through_attr)
else:
attr_found = True
if rel_obj_descriptor:
# singly related object, descriptor object has the
# get_prefetch_queryset() method.
if hasattr(rel_obj_descriptor, 'get_prefetch_queryset'):
prefetcher = rel_obj_descriptor
is_fetched = rel_obj_descriptor.is_cached
else:
# descriptor doesn't support prefetching, so we go ahead and get
# the attribute on the instance rather than the class to
# support many related managers
rel_obj = getattr(instance, through_attr)
if hasattr(rel_obj, 'get_prefetch_queryset'):
prefetcher = rel_obj
if through_attr != to_attr:
# Special case cached_property instances because hasattr
# triggers attribute computation and assignment.
if isinstance(getattr(instance.__class__, to_attr, None), cached_property):
def has_cached_property(instance):
return to_attr in instance.__dict__
is_fetched = has_cached_property
else:
def in_prefetched_cache(instance):
return through_attr in instance._prefetched_objects_cache
is_fetched = in_prefetched_cache
return prefetcher, rel_obj_descriptor, attr_found, is_fetched
def prefetch_one_level(instances, prefetcher, lookup, level):
"""
Helper function for prefetch_related_objects().
Run prefetches on all instances using the prefetcher object,
assigning results to relevant caches in instance.
Return the prefetched objects along with any additional prefetches that
must be done due to prefetch_related lookups found from default managers.
"""
# prefetcher must have a method get_prefetch_queryset() which takes a list
# of instances, and returns a tuple:
# (queryset of instances of self.model that are related to passed in instances,
# callable that gets value to be matched for returned instances,
# callable that gets value to be matched for passed in instances,
# boolean that is True for singly related objects,
# cache or field name to assign to,
# boolean that is True when the previous argument is a cache name vs a field name).
# The 'values to be matched' must be hashable as they will be used
# in a dictionary.
rel_qs, rel_obj_attr, instance_attr, single, cache_name, is_descriptor = (
prefetcher.get_prefetch_queryset(instances, lookup.get_current_queryset(level)))
# We have to handle the possibility that the QuerySet we just got back
# contains some prefetch_related lookups. We don't want to trigger the
# prefetch_related functionality by evaluating the query. Rather, we need
# to merge in the prefetch_related lookups.
# Copy the lookups in case it is a Prefetch object which could be reused
# later (happens in nested prefetch_related).
additional_lookups = [
copy.copy(additional_lookup) for additional_lookup
in getattr(rel_qs, '_prefetch_related_lookups', ())
]
if additional_lookups:
# Don't need to clone because the manager should have given us a fresh
# instance, so we access an internal instead of using public interface
# for performance reasons.
rel_qs._prefetch_related_lookups = ()
all_related_objects = list(rel_qs)
rel_obj_cache = {}
for rel_obj in all_related_objects:
rel_attr_val = rel_obj_attr(rel_obj)
rel_obj_cache.setdefault(rel_attr_val, []).append(rel_obj)
to_attr, as_attr = lookup.get_current_to_attr(level)
# Make sure `to_attr` does not conflict with a field.
if as_attr and instances:
# We assume that objects retrieved are homogeneous (which is the premise
# of prefetch_related), so what applies to first object applies to all.
model = instances[0].__class__
try:
model._meta.get_field(to_attr)
except exceptions.FieldDoesNotExist:
pass
else:
msg = 'to_attr={} conflicts with a field on the {} model.'
raise ValueError(msg.format(to_attr, model.__name__))
# Whether or not we're prefetching the last part of the lookup.
leaf = len(lookup.prefetch_through.split(LOOKUP_SEP)) - 1 == level
for obj in instances:
instance_attr_val = instance_attr(obj)
vals = rel_obj_cache.get(instance_attr_val, [])
if single:
val = vals[0] if vals else None
if as_attr:
# A to_attr has been given for the prefetch.
setattr(obj, to_attr, val)
elif is_descriptor:
# cache_name points to a field name in obj.
# This field is a descriptor for a related object.
setattr(obj, cache_name, val)
else:
# No to_attr has been given for this prefetch operation and the
# cache_name does not point to a descriptor. Store the value of
# the field in the object's field cache.
obj._state.fields_cache[cache_name] = val
else:
if as_attr:
setattr(obj, to_attr, vals)
else:
manager = getattr(obj, to_attr)
if leaf and lookup.queryset is not None:
qs = manager._apply_rel_filters(lookup.queryset)
else:
qs = manager.get_queryset()
qs._result_cache = vals
# We don't want the individual qs doing prefetch_related now,
# since we have merged this into the current work.
qs._prefetch_done = True
obj._prefetched_objects_cache[cache_name] = qs
return all_related_objects, additional_lookups
class RelatedPopulator:
"""
RelatedPopulator is used for select_related() object instantiation.
The idea is that each select_related() model will be populated by a
different RelatedPopulator instance. The RelatedPopulator instances get
klass_info and select (computed in SQLCompiler) plus the used db as
input for initialization. That data is used to compute which columns
to use, how to instantiate the model, and how to populate the links
between the objects.
The actual creation of the objects is done in populate() method. This
method gets row and from_obj as input and populates the select_related()
model instance.
"""
def __init__(self, klass_info, select, db):
self.db = db
# Pre-compute needed attributes. The attributes are:
# - model_cls: the possibly deferred model class to instantiate
# - either:
# - cols_start, cols_end: usually the columns in the row are
# in the same order model_cls.__init__ expects them, so we
# can instantiate by model_cls(*row[cols_start:cols_end])
# - reorder_for_init: When select_related descends to a child
# class, then we want to reuse the already selected parent
# data. However, in this case the parent data isn't necessarily
# in the same order that Model.__init__ expects it to be, so
# we have to reorder the parent data. The reorder_for_init
# attribute contains a function used to reorder the field data
# in the order __init__ expects it.
# - pk_idx: the index of the primary key field in the reordered
# model data. Used to check if a related object exists at all.
# - init_list: the field attnames fetched from the database. For
# deferred models this isn't the same as all attnames of the
# model's fields.
# - related_populators: a list of RelatedPopulator instances if
# select_related() descends to related models from this model.
# - local_setter, remote_setter: Methods to set cached values on
# the object being populated and on the remote object. Usually
# these are Field.set_cached_value() methods.
select_fields = klass_info['select_fields']
from_parent = klass_info['from_parent']
if not from_parent:
self.cols_start = select_fields[0]
self.cols_end = select_fields[-1] + 1
self.init_list = [
f[0].target.attname for f in select[self.cols_start:self.cols_end]
]
self.reorder_for_init = None
else:
attname_indexes = {select[idx][0].target.attname: idx for idx in select_fields}
model_init_attnames = (f.attname for f in klass_info['model']._meta.concrete_fields)
self.init_list = [attname for attname in model_init_attnames if attname in attname_indexes]
self.reorder_for_init = operator.itemgetter(*[attname_indexes[attname] for attname in self.init_list])
self.model_cls = klass_info['model']
self.pk_idx = self.init_list.index(self.model_cls._meta.pk.attname)
self.related_populators = get_related_populators(klass_info, select, self.db)
self.local_setter = klass_info['local_setter']
self.remote_setter = klass_info['remote_setter']
def populate(self, row, from_obj):
if self.reorder_for_init:
obj_data = self.reorder_for_init(row)
else:
obj_data = row[self.cols_start:self.cols_end]
if obj_data[self.pk_idx] is None:
obj = None
else:
obj = self.model_cls.from_db(self.db, self.init_list, obj_data)
for rel_iter in self.related_populators:
rel_iter.populate(row, obj)
self.local_setter(from_obj, obj)
if obj is not None:
self.remote_setter(obj, from_obj)
def get_related_populators(klass_info, select, db):
iterators = []
related_klass_infos = klass_info.get('related_klass_infos', [])
for rel_klass_info in related_klass_infos:
rel_cls = RelatedPopulator(rel_klass_info, select, db)
iterators.append(rel_cls)
return iterators
|
709a4aa49bbc7c34cf905b00915719a6e1eca2682b3841f43cc8798fa17c5b6d | """
Create SQL statements for QuerySets.
The code in here encapsulates all of the SQL construction so that QuerySets
themselves do not have to (and could be backed by things other than SQL
databases). The abstraction barrier only works one way: this module has to know
all about the internals of models in order to get the information it needs.
"""
import copy
import difflib
import functools
import sys
from collections import Counter, namedtuple
from collections.abc import Iterator, Mapping
from itertools import chain, count, product
from string import ascii_uppercase
from django.core.exceptions import FieldDoesNotExist, FieldError
from django.db import DEFAULT_DB_ALIAS, NotSupportedError, connections
from django.db.models.aggregates import Count
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import (
BaseExpression, Col, Exists, F, OuterRef, Ref, ResolvedOuterRef,
)
from django.db.models.fields import Field
from django.db.models.fields.related_lookups import MultiColSource
from django.db.models.lookups import Lookup
from django.db.models.query_utils import (
Q, check_rel_lookup_compatibility, refs_expression,
)
from django.db.models.sql.constants import INNER, LOUTER, ORDER_DIR, SINGLE
from django.db.models.sql.datastructures import (
BaseTable, Empty, Join, MultiJoin,
)
from django.db.models.sql.where import (
AND, OR, ExtraWhere, NothingNode, WhereNode,
)
from django.utils.functional import cached_property
from django.utils.tree import Node
__all__ = ['Query', 'RawQuery']
def get_field_names_from_opts(opts):
return set(chain.from_iterable(
(f.name, f.attname) if f.concrete else (f.name,)
for f in opts.get_fields()
))
def get_children_from_q(q):
for child in q.children:
if isinstance(child, Node):
yield from get_children_from_q(child)
else:
yield child
JoinInfo = namedtuple(
'JoinInfo',
('final_field', 'targets', 'opts', 'joins', 'path', 'transform_function')
)
class RawQuery:
"""A single raw SQL query."""
def __init__(self, sql, using, params=()):
self.params = params
self.sql = sql
self.using = using
self.cursor = None
# Mirror some properties of a normal query so that
# the compiler can be used to process results.
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.extra_select = {}
self.annotation_select = {}
def chain(self, using):
return self.clone(using)
def clone(self, using):
return RawQuery(self.sql, using, params=self.params)
def get_columns(self):
if self.cursor is None:
self._execute_query()
converter = connections[self.using].introspection.identifier_converter
return [converter(column_meta[0])
for column_meta in self.cursor.description]
def __iter__(self):
# Always execute a new query for a new iterator.
# This could be optimized with a cache at the expense of RAM.
self._execute_query()
if not connections[self.using].features.can_use_chunked_reads:
# If the database can't use chunked reads we need to make sure we
# evaluate the entire query up front.
result = list(self.cursor)
else:
result = self.cursor
return iter(result)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
@property
def params_type(self):
if self.params is None:
return None
return dict if isinstance(self.params, Mapping) else tuple
def __str__(self):
if self.params_type is None:
return self.sql
return self.sql % self.params_type(self.params)
def _execute_query(self):
connection = connections[self.using]
# Adapt parameters to the database, as much as possible considering
# that the target type isn't known. See #17755.
params_type = self.params_type
adapter = connection.ops.adapt_unknown_value
if params_type is tuple:
params = tuple(adapter(val) for val in self.params)
elif params_type is dict:
params = {key: adapter(val) for key, val in self.params.items()}
elif params_type is None:
params = None
else:
raise RuntimeError("Unexpected params type: %s" % params_type)
self.cursor = connection.cursor()
self.cursor.execute(self.sql, params)
ExplainInfo = namedtuple('ExplainInfo', ('format', 'options'))
class Query(BaseExpression):
"""A single SQL query."""
alias_prefix = 'T'
subq_aliases = frozenset([alias_prefix])
compiler = 'SQLCompiler'
def __init__(self, model, alias_cols=True):
self.model = model
self.alias_refcount = {}
# alias_map is the most important data structure regarding joins.
# It's used for recording which joins exist in the query and what
# types they are. The key is the alias of the joined table (possibly
# the table name) and the value is a Join-like object (see
# sql.datastructures.Join for more information).
self.alias_map = {}
# Whether to provide alias to columns during reference resolving.
self.alias_cols = alias_cols
# Sometimes the query contains references to aliases in outer queries (as
# a result of split_exclude). Correct alias quoting needs to know these
# aliases too.
# Map external tables to whether they are aliased.
self.external_aliases = {}
self.table_map = {} # Maps table names to list of aliases.
self.default_cols = True
self.default_ordering = True
self.standard_ordering = True
self.used_aliases = set()
self.filter_is_sticky = False
self.subquery = False
# SQL-related attributes
# Select and related select clauses are expressions to use in the
# SELECT clause of the query.
# The select is used for cases where we want to set up the select
# clause to contain other than default fields (values(), subqueries...)
# Note that annotations go to annotations dictionary.
self.select = ()
self.where = WhereNode()
# The group_by attribute can have one of the following forms:
# - None: no group by at all in the query
# - A tuple of expressions: group by (at least) those expressions.
# String refs are also allowed for now.
# - True: group by all select fields of the model
# See compiler.get_group_by() for details.
self.group_by = None
self.order_by = ()
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.distinct = False
self.distinct_fields = ()
self.select_for_update = False
self.select_for_update_nowait = False
self.select_for_update_skip_locked = False
self.select_for_update_of = ()
self.select_for_no_key_update = False
self.select_related = False
# Arbitrary limit for select_related to prevents infinite recursion.
self.max_depth = 5
# Holds the selects defined by a call to values() or values_list()
# excluding annotation_select and extra_select.
self.values_select = ()
# SQL annotation-related attributes
self.annotations = {} # Maps alias -> Annotation Expression
self.annotation_select_mask = None
self._annotation_select_cache = None
# Set combination attributes
self.combinator = None
self.combinator_all = False
self.combined_queries = ()
# These are for extensions. The contents are more or less appended
# verbatim to the appropriate clause.
self.extra = {} # Maps col_alias -> (col_sql, params).
self.extra_select_mask = None
self._extra_select_cache = None
self.extra_tables = ()
self.extra_order_by = ()
# A tuple that is a set of model field names and either True, if these
# are the fields to defer, or False if these are the only fields to
# load.
self.deferred_loading = (frozenset(), True)
self._filtered_relations = {}
self.explain_info = None
@property
def output_field(self):
if len(self.select) == 1:
select = self.select[0]
return getattr(select, 'target', None) or select.field
elif len(self.annotation_select) == 1:
return next(iter(self.annotation_select.values())).output_field
@property
def has_select_fields(self):
return bool(self.select or self.annotation_select_mask or self.extra_select_mask)
@cached_property
def base_table(self):
for alias in self.alias_map:
return alias
def __str__(self):
"""
Return the query as a string of SQL with the parameter values
substituted in (use sql_with_params() to see the unsubstituted string).
Parameter values won't necessarily be quoted correctly, since that is
done by the database interface at execution time.
"""
sql, params = self.sql_with_params()
return sql % params
def sql_with_params(self):
"""
Return the query as an SQL string and the parameters that will be
substituted into the query.
"""
return self.get_compiler(DEFAULT_DB_ALIAS).as_sql()
def __deepcopy__(self, memo):
"""Limit the amount of work when a Query is deepcopied."""
result = self.clone()
memo[id(self)] = result
return result
def get_compiler(self, using=None, connection=None, elide_empty=True):
if using is None and connection is None:
raise ValueError("Need either using or connection")
if using:
connection = connections[using]
return connection.ops.compiler(self.compiler)(self, connection, using, elide_empty)
def get_meta(self):
"""
Return the Options instance (the model._meta) from which to start
processing. Normally, this is self.model._meta, but it can be changed
by subclasses.
"""
return self.model._meta
def clone(self):
"""
Return a copy of the current Query. A lightweight alternative to
to deepcopy().
"""
obj = Empty()
obj.__class__ = self.__class__
# Copy references to everything.
obj.__dict__ = self.__dict__.copy()
# Clone attributes that can't use shallow copy.
obj.alias_refcount = self.alias_refcount.copy()
obj.alias_map = self.alias_map.copy()
obj.external_aliases = self.external_aliases.copy()
obj.table_map = self.table_map.copy()
obj.where = self.where.clone()
obj.annotations = self.annotations.copy()
if self.annotation_select_mask is not None:
obj.annotation_select_mask = self.annotation_select_mask.copy()
obj.combined_queries = tuple(query.clone() for query in self.combined_queries)
# _annotation_select_cache cannot be copied, as doing so breaks the
# (necessary) state in which both annotations and
# _annotation_select_cache point to the same underlying objects.
# It will get re-populated in the cloned queryset the next time it's
# used.
obj._annotation_select_cache = None
obj.extra = self.extra.copy()
if self.extra_select_mask is not None:
obj.extra_select_mask = self.extra_select_mask.copy()
if self._extra_select_cache is not None:
obj._extra_select_cache = self._extra_select_cache.copy()
if self.select_related is not False:
# Use deepcopy because select_related stores fields in nested
# dicts.
obj.select_related = copy.deepcopy(obj.select_related)
if 'subq_aliases' in self.__dict__:
obj.subq_aliases = self.subq_aliases.copy()
obj.used_aliases = self.used_aliases.copy()
obj._filtered_relations = self._filtered_relations.copy()
# Clear the cached_property
try:
del obj.base_table
except AttributeError:
pass
return obj
def chain(self, klass=None):
"""
Return a copy of the current Query that's ready for another operation.
The klass argument changes the type of the Query, e.g. UpdateQuery.
"""
obj = self.clone()
if klass and obj.__class__ != klass:
obj.__class__ = klass
if not obj.filter_is_sticky:
obj.used_aliases = set()
obj.filter_is_sticky = False
if hasattr(obj, '_setup_query'):
obj._setup_query()
return obj
def relabeled_clone(self, change_map):
clone = self.clone()
clone.change_aliases(change_map)
return clone
def _get_col(self, target, field, alias):
if not self.alias_cols:
alias = None
return target.get_col(alias, field)
def rewrite_cols(self, annotation, col_cnt):
# We must make sure the inner query has the referred columns in it.
# If we are aggregating over an annotation, then Django uses Ref()
# instances to note this. However, if we are annotating over a column
# of a related model, then it might be that column isn't part of the
# SELECT clause of the inner query, and we must manually make sure
# the column is selected. An example case is:
# .aggregate(Sum('author__awards'))
# Resolving this expression results in a join to author, but there
# is no guarantee the awards column of author is in the select clause
# of the query. Thus we must manually add the column to the inner
# query.
orig_exprs = annotation.get_source_expressions()
new_exprs = []
for expr in orig_exprs:
# FIXME: These conditions are fairly arbitrary. Identify a better
# method of having expressions decide which code path they should
# take.
if isinstance(expr, Ref):
# Its already a Ref to subquery (see resolve_ref() for
# details)
new_exprs.append(expr)
elif isinstance(expr, (WhereNode, Lookup)):
# Decompose the subexpressions further. The code here is
# copied from the else clause, but this condition must appear
# before the contains_aggregate/is_summary condition below.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
else:
# Reuse aliases of expressions already selected in subquery.
for col_alias, selected_annotation in self.annotation_select.items():
if selected_annotation is expr:
new_expr = Ref(col_alias, expr)
break
else:
# An expression that is not selected the subquery.
if isinstance(expr, Col) or (expr.contains_aggregate and not expr.is_summary):
# Reference column or another aggregate. Select it
# under a non-conflicting alias.
col_cnt += 1
col_alias = '__col%d' % col_cnt
self.annotations[col_alias] = expr
self.append_annotation_mask([col_alias])
new_expr = Ref(col_alias, expr)
else:
# Some other expression not referencing database values
# directly. Its subexpression might contain Cols.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
annotation.set_source_expressions(new_exprs)
return annotation, col_cnt
def get_aggregation(self, using, added_aggregate_names):
"""
Return the dictionary with the values of the existing aggregations.
"""
if not self.annotation_select:
return {}
existing_annotations = [
annotation for alias, annotation
in self.annotations.items()
if alias not in added_aggregate_names
]
# Decide if we need to use a subquery.
#
# Existing annotations would cause incorrect results as get_aggregation()
# must produce just one result and thus must not use GROUP BY. But we
# aren't smart enough to remove the existing annotations from the
# query, so those would force us to use GROUP BY.
#
# If the query has limit or distinct, or uses set operations, then
# those operations must be done in a subquery so that the query
# aggregates on the limit and/or distinct results instead of applying
# the distinct and limit after the aggregation.
if (isinstance(self.group_by, tuple) or self.is_sliced or existing_annotations or
self.distinct or self.combinator):
from django.db.models.sql.subqueries import AggregateQuery
inner_query = self.clone()
inner_query.subquery = True
outer_query = AggregateQuery(self.model, inner_query)
inner_query.select_for_update = False
inner_query.select_related = False
inner_query.set_annotation_mask(self.annotation_select)
# Queries with distinct_fields need ordering and when a limit is
# applied we must take the slice from the ordered query. Otherwise
# no need for ordering.
inner_query.clear_ordering(force=False)
if not inner_query.distinct:
# If the inner query uses default select and it has some
# aggregate annotations, then we must make sure the inner
# query is grouped by the main model's primary key. However,
# clearing the select clause can alter results if distinct is
# used.
has_existing_aggregate_annotations = any(
annotation for annotation in existing_annotations
if getattr(annotation, 'contains_aggregate', True)
)
if inner_query.default_cols and has_existing_aggregate_annotations:
inner_query.group_by = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
inner_query.default_cols = False
relabels = {t: 'subquery' for t in inner_query.alias_map}
relabels[None] = 'subquery'
# Remove any aggregates marked for reduction from the subquery
# and move them to the outer AggregateQuery.
col_cnt = 0
for alias, expression in list(inner_query.annotation_select.items()):
annotation_select_mask = inner_query.annotation_select_mask
if expression.is_summary:
expression, col_cnt = inner_query.rewrite_cols(expression, col_cnt)
outer_query.annotations[alias] = expression.relabeled_clone(relabels)
del inner_query.annotations[alias]
annotation_select_mask.remove(alias)
# Make sure the annotation_select wont use cached results.
inner_query.set_annotation_mask(inner_query.annotation_select_mask)
if inner_query.select == () and not inner_query.default_cols and not inner_query.annotation_select_mask:
# In case of Model.objects[0:3].count(), there would be no
# field selected in the inner query, yet we must use a subquery.
# So, make sure at least one field is selected.
inner_query.select = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
else:
outer_query = self
self.select = ()
self.default_cols = False
self.extra = {}
empty_aggregate_result = [
expression.empty_aggregate_value
for expression in outer_query.annotation_select.values()
]
elide_empty = not any(result is NotImplemented for result in empty_aggregate_result)
outer_query.clear_ordering(force=True)
outer_query.clear_limits()
outer_query.select_for_update = False
outer_query.select_related = False
compiler = outer_query.get_compiler(using, elide_empty=elide_empty)
result = compiler.execute_sql(SINGLE)
if result is None:
result = empty_aggregate_result
converters = compiler.get_converters(outer_query.annotation_select.values())
result = next(compiler.apply_converters((result,), converters))
return dict(zip(outer_query.annotation_select, result))
def get_count(self, using):
"""
Perform a COUNT() query using the current filter constraints.
"""
obj = self.clone()
obj.add_annotation(Count('*'), alias='__count', is_summary=True)
number = obj.get_aggregation(using, ['__count'])['__count']
if number is None:
number = 0
return number
def has_filters(self):
return self.where
def exists(self, using, limit=True):
q = self.clone()
if not q.distinct:
if q.group_by is True:
q.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
q.set_group_by(allow_aliases=False)
q.clear_select_clause()
if q.combined_queries and q.combinator == 'union':
limit_combined = connections[using].features.supports_slicing_ordering_in_compound
q.combined_queries = tuple(
combined_query.exists(using, limit=limit_combined)
for combined_query in q.combined_queries
)
q.clear_ordering(force=True)
if limit:
q.set_limits(high=1)
q.add_extra({'a': 1}, None, None, None, None, None)
q.set_extra_mask(['a'])
return q
def has_results(self, using):
q = self.exists(using)
compiler = q.get_compiler(using=using)
return compiler.has_results()
def explain(self, using, format=None, **options):
q = self.clone()
q.explain_info = ExplainInfo(format, options)
compiler = q.get_compiler(using=using)
return '\n'.join(compiler.explain_query())
def combine(self, rhs, connector):
"""
Merge the 'rhs' query into the current one (with any 'rhs' effects
being applied *after* (that is, "to the right of") anything in the
current query. 'rhs' is not modified during a call to this function.
The 'connector' parameter describes how to connect filters from the
'rhs' query.
"""
if self.model != rhs.model:
raise TypeError('Cannot combine queries on two different base models.')
if self.is_sliced:
raise TypeError('Cannot combine queries once a slice has been taken.')
if self.distinct != rhs.distinct:
raise TypeError('Cannot combine a unique query with a non-unique query.')
if self.distinct_fields != rhs.distinct_fields:
raise TypeError('Cannot combine queries with different distinct fields.')
# Work out how to relabel the rhs aliases, if necessary.
change_map = {}
conjunction = (connector == AND)
# Determine which existing joins can be reused. When combining the
# query with AND we must recreate all joins for m2m filters. When
# combining with OR we can reuse joins. The reason is that in AND
# case a single row can't fulfill a condition like:
# revrel__col=1 & revrel__col=2
# But, there might be two different related rows matching this
# condition. In OR case a single True is enough, so single row is
# enough, too.
#
# Note that we will be creating duplicate joins for non-m2m joins in
# the AND case. The results will be correct but this creates too many
# joins. This is something that could be fixed later on.
reuse = set() if conjunction else set(self.alias_map)
# Base table must be present in the query - this is the same
# table on both sides.
self.get_initial_alias()
joinpromoter = JoinPromoter(connector, 2, False)
joinpromoter.add_votes(
j for j in self.alias_map if self.alias_map[j].join_type == INNER)
rhs_votes = set()
# Now, add the joins from rhs query into the new query (skipping base
# table).
rhs_tables = list(rhs.alias_map)[1:]
for alias in rhs_tables:
join = rhs.alias_map[alias]
# If the left side of the join was already relabeled, use the
# updated alias.
join = join.relabeled_clone(change_map)
new_alias = self.join(join, reuse=reuse)
if join.join_type == INNER:
rhs_votes.add(new_alias)
# We can't reuse the same join again in the query. If we have two
# distinct joins for the same connection in rhs query, then the
# combined query must have two joins, too.
reuse.discard(new_alias)
if alias != new_alias:
change_map[alias] = new_alias
if not rhs.alias_refcount[alias]:
# The alias was unused in the rhs query. Unref it so that it
# will be unused in the new query, too. We have to add and
# unref the alias so that join promotion has information of
# the join type for the unused alias.
self.unref_alias(new_alias)
joinpromoter.add_votes(rhs_votes)
joinpromoter.update_join_types(self)
# Combine subqueries aliases to ensure aliases relabelling properly
# handle subqueries when combining where and select clauses.
self.subq_aliases |= rhs.subq_aliases
# Now relabel a copy of the rhs where-clause and add it to the current
# one.
w = rhs.where.clone()
w.relabel_aliases(change_map)
self.where.add(w, connector)
# Selection columns and extra extensions are those provided by 'rhs'.
if rhs.select:
self.set_select([col.relabeled_clone(change_map) for col in rhs.select])
else:
self.select = ()
if connector == OR:
# It would be nice to be able to handle this, but the queries don't
# really make sense (or return consistent value sets). Not worth
# the extra complexity when you can write a real query instead.
if self.extra and rhs.extra:
raise ValueError("When merging querysets using 'or', you cannot have extra(select=...) on both sides.")
self.extra.update(rhs.extra)
extra_select_mask = set()
if self.extra_select_mask is not None:
extra_select_mask.update(self.extra_select_mask)
if rhs.extra_select_mask is not None:
extra_select_mask.update(rhs.extra_select_mask)
if extra_select_mask:
self.set_extra_mask(extra_select_mask)
self.extra_tables += rhs.extra_tables
# Ordering uses the 'rhs' ordering, unless it has none, in which case
# the current ordering is used.
self.order_by = rhs.order_by or self.order_by
self.extra_order_by = rhs.extra_order_by or self.extra_order_by
def deferred_to_data(self, target, callback):
"""
Convert the self.deferred_loading data structure to an alternate data
structure, describing the field that *will* be loaded. This is used to
compute the columns to select from the database and also by the
QuerySet class to work out which fields are being initialized on each
model. Models that have all their fields included aren't mentioned in
the result, only those that have field restrictions in place.
The "target" parameter is the instance that is populated (in place).
The "callback" is a function that is called whenever a (model, field)
pair need to be added to "target". It accepts three parameters:
"target", and the model and list of fields being added for that model.
"""
field_names, defer = self.deferred_loading
if not field_names:
return
orig_opts = self.get_meta()
seen = {}
must_include = {orig_opts.concrete_model: {orig_opts.pk}}
for field_name in field_names:
parts = field_name.split(LOOKUP_SEP)
cur_model = self.model._meta.concrete_model
opts = orig_opts
for name in parts[:-1]:
old_model = cur_model
if name in self._filtered_relations:
name = self._filtered_relations[name].relation_name
source = opts.get_field(name)
if is_reverse_o2o(source):
cur_model = source.related_model
else:
cur_model = source.remote_field.model
opts = cur_model._meta
# Even if we're "just passing through" this model, we must add
# both the current model's pk and the related reference field
# (if it's not a reverse relation) to the things we select.
if not is_reverse_o2o(source):
must_include[old_model].add(source)
add_to_dict(must_include, cur_model, opts.pk)
field = opts.get_field(parts[-1])
is_reverse_object = field.auto_created and not field.concrete
model = field.related_model if is_reverse_object else field.model
model = model._meta.concrete_model
if model == opts.model:
model = cur_model
if not is_reverse_o2o(field):
add_to_dict(seen, model, field)
if defer:
# We need to load all fields for each model, except those that
# appear in "seen" (for all models that appear in "seen"). The only
# slight complexity here is handling fields that exist on parent
# models.
workset = {}
for model, values in seen.items():
for field in model._meta.local_fields:
if field not in values:
m = field.model._meta.concrete_model
add_to_dict(workset, m, field)
for model, values in must_include.items():
# If we haven't included a model in workset, we don't add the
# corresponding must_include fields for that model, since an
# empty set means "include all fields". That's why there's no
# "else" branch here.
if model in workset:
workset[model].update(values)
for model, values in workset.items():
callback(target, model, values)
else:
for model, values in must_include.items():
if model in seen:
seen[model].update(values)
else:
# As we've passed through this model, but not explicitly
# included any fields, we have to make sure it's mentioned
# so that only the "must include" fields are pulled in.
seen[model] = values
# Now ensure that every model in the inheritance chain is mentioned
# in the parent list. Again, it must be mentioned to ensure that
# only "must include" fields are pulled in.
for model in orig_opts.get_parent_list():
seen.setdefault(model, set())
for model, values in seen.items():
callback(target, model, values)
def table_alias(self, table_name, create=False, filtered_relation=None):
"""
Return a table alias for the given table_name and whether this is a
new alias or not.
If 'create' is true, a new alias is always created. Otherwise, the
most recently created alias for the table (if one exists) is reused.
"""
alias_list = self.table_map.get(table_name)
if not create and alias_list:
alias = alias_list[0]
self.alias_refcount[alias] += 1
return alias, False
# Create a new alias for this table.
if alias_list:
alias = '%s%d' % (self.alias_prefix, len(self.alias_map) + 1)
alias_list.append(alias)
else:
# The first occurrence of a table uses the table name directly.
alias = filtered_relation.alias if filtered_relation is not None else table_name
self.table_map[table_name] = [alias]
self.alias_refcount[alias] = 1
return alias, True
def ref_alias(self, alias):
"""Increases the reference count for this alias."""
self.alias_refcount[alias] += 1
def unref_alias(self, alias, amount=1):
"""Decreases the reference count for this alias."""
self.alias_refcount[alias] -= amount
def promote_joins(self, aliases):
"""
Promote recursively the join type of given aliases and its children to
an outer join. If 'unconditional' is False, only promote the join if
it is nullable or the parent join is an outer join.
The children promotion is done to avoid join chains that contain a LOUTER
b INNER c. So, if we have currently a INNER b INNER c and a->b is promoted,
then we must also promote b->c automatically, or otherwise the promotion
of a->b doesn't actually change anything in the query results.
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type is None:
# This is the base table (first FROM entry) - this table
# isn't really joined at all in the query, so we should not
# alter its join type.
continue
# Only the first alias (skipped above) should have None join_type
assert self.alias_map[alias].join_type is not None
parent_alias = self.alias_map[alias].parent_alias
parent_louter = parent_alias and self.alias_map[parent_alias].join_type == LOUTER
already_louter = self.alias_map[alias].join_type == LOUTER
if ((self.alias_map[alias].nullable or parent_louter) and
not already_louter):
self.alias_map[alias] = self.alias_map[alias].promote()
# Join type of 'alias' changed, so re-examine all aliases that
# refer to this one.
aliases.extend(
join for join in self.alias_map
if self.alias_map[join].parent_alias == alias and join not in aliases
)
def demote_joins(self, aliases):
"""
Change join type from LOUTER to INNER for all joins in aliases.
Similarly to promote_joins(), this method must ensure no join chains
containing first an outer, then an inner join are generated. If we
are demoting b->c join in chain a LOUTER b LOUTER c then we must
demote a->b automatically, or otherwise the demotion of b->c doesn't
actually change anything in the query results. .
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type == LOUTER:
self.alias_map[alias] = self.alias_map[alias].demote()
parent_alias = self.alias_map[alias].parent_alias
if self.alias_map[parent_alias].join_type == INNER:
aliases.append(parent_alias)
def reset_refcounts(self, to_counts):
"""
Reset reference counts for aliases so that they match the value passed
in `to_counts`.
"""
for alias, cur_refcount in self.alias_refcount.copy().items():
unref_amount = cur_refcount - to_counts.get(alias, 0)
self.unref_alias(alias, unref_amount)
def change_aliases(self, change_map):
"""
Change the aliases in change_map (which maps old-alias -> new-alias),
relabelling any references to them in select columns and the where
clause.
"""
assert set(change_map).isdisjoint(change_map.values())
# 1. Update references in "select" (normal columns plus aliases),
# "group by" and "where".
self.where.relabel_aliases(change_map)
if isinstance(self.group_by, tuple):
self.group_by = tuple([col.relabeled_clone(change_map) for col in self.group_by])
self.select = tuple([col.relabeled_clone(change_map) for col in self.select])
self.annotations = self.annotations and {
key: col.relabeled_clone(change_map) for key, col in self.annotations.items()
}
# 2. Rename the alias in the internal table/alias datastructures.
for old_alias, new_alias in change_map.items():
if old_alias not in self.alias_map:
continue
alias_data = self.alias_map[old_alias].relabeled_clone(change_map)
self.alias_map[new_alias] = alias_data
self.alias_refcount[new_alias] = self.alias_refcount[old_alias]
del self.alias_refcount[old_alias]
del self.alias_map[old_alias]
table_aliases = self.table_map[alias_data.table_name]
for pos, alias in enumerate(table_aliases):
if alias == old_alias:
table_aliases[pos] = new_alias
break
self.external_aliases = {
# Table is aliased or it's being changed and thus is aliased.
change_map.get(alias, alias): (aliased or alias in change_map)
for alias, aliased in self.external_aliases.items()
}
def bump_prefix(self, outer_query):
"""
Change the alias prefix to the next letter in the alphabet in a way
that the outer query's aliases and this query's aliases will not
conflict. Even tables that previously had no alias will get an alias
after this call.
"""
def prefix_gen():
"""
Generate a sequence of characters in alphabetical order:
-> 'A', 'B', 'C', ...
When the alphabet is finished, the sequence will continue with the
Cartesian product:
-> 'AA', 'AB', 'AC', ...
"""
alphabet = ascii_uppercase
prefix = chr(ord(self.alias_prefix) + 1)
yield prefix
for n in count(1):
seq = alphabet[alphabet.index(prefix):] if prefix else alphabet
for s in product(seq, repeat=n):
yield ''.join(s)
prefix = None
if self.alias_prefix != outer_query.alias_prefix:
# No clashes between self and outer query should be possible.
return
# Explicitly avoid infinite loop. The constant divider is based on how
# much depth recursive subquery references add to the stack. This value
# might need to be adjusted when adding or removing function calls from
# the code path in charge of performing these operations.
local_recursion_limit = sys.getrecursionlimit() // 16
for pos, prefix in enumerate(prefix_gen()):
if prefix not in self.subq_aliases:
self.alias_prefix = prefix
break
if pos > local_recursion_limit:
raise RecursionError(
'Maximum recursion depth exceeded: too many subqueries.'
)
self.subq_aliases = self.subq_aliases.union([self.alias_prefix])
outer_query.subq_aliases = outer_query.subq_aliases.union(self.subq_aliases)
self.change_aliases({
alias: '%s%d' % (self.alias_prefix, pos)
for pos, alias in enumerate(self.alias_map)
})
def get_initial_alias(self):
"""
Return the first alias for this query, after increasing its reference
count.
"""
if self.alias_map:
alias = self.base_table
self.ref_alias(alias)
else:
alias = self.join(BaseTable(self.get_meta().db_table, None))
return alias
def count_active_tables(self):
"""
Return the number of tables in this query with a non-zero reference
count. After execution, the reference counts are zeroed, so tables
added in compiler will not be seen by this method.
"""
return len([1 for count in self.alias_refcount.values() if count])
def join(self, join, reuse=None):
"""
Return an alias for the 'join', either reusing an existing alias for
that join or creating a new one. 'join' is either a
sql.datastructures.BaseTable or Join.
The 'reuse' parameter can be either None which means all joins are
reusable, or it can be a set containing the aliases that can be reused.
A join is always created as LOUTER if the lhs alias is LOUTER to make
sure chains like t1 LOUTER t2 INNER t3 aren't generated. All new
joins are created as LOUTER if the join is nullable.
"""
reuse_aliases = [
a for a, j in self.alias_map.items()
if (reuse is None or a in reuse) and j.equals(join)
]
if reuse_aliases:
if join.table_alias in reuse_aliases:
reuse_alias = join.table_alias
else:
# Reuse the most recent alias of the joined table
# (a many-to-many relation may be joined multiple times).
reuse_alias = reuse_aliases[-1]
self.ref_alias(reuse_alias)
return reuse_alias
# No reuse is possible, so we need a new alias.
alias, _ = self.table_alias(join.table_name, create=True, filtered_relation=join.filtered_relation)
if join.join_type:
if self.alias_map[join.parent_alias].join_type == LOUTER or join.nullable:
join_type = LOUTER
else:
join_type = INNER
join.join_type = join_type
join.table_alias = alias
self.alias_map[alias] = join
return alias
def join_parent_model(self, opts, model, alias, seen):
"""
Make sure the given 'model' is joined in the query. If 'model' isn't
a parent of 'opts' or if it is None this method is a no-op.
The 'alias' is the root alias for starting the join, 'seen' is a dict
of model -> alias of existing joins. It must also contain a mapping
of None -> some alias. This will be returned in the no-op case.
"""
if model in seen:
return seen[model]
chain = opts.get_base_chain(model)
if not chain:
return alias
curr_opts = opts
for int_model in chain:
if int_model in seen:
curr_opts = int_model._meta
alias = seen[int_model]
continue
# Proxy model have elements in base chain
# with no parents, assign the new options
# object and skip to the next base in that
# case
if not curr_opts.parents[int_model]:
curr_opts = int_model._meta
continue
link_field = curr_opts.get_ancestor_link(int_model)
join_info = self.setup_joins([link_field.name], curr_opts, alias)
curr_opts = int_model._meta
alias = seen[int_model] = join_info.joins[-1]
return alias or seen[None]
def add_annotation(self, annotation, alias, is_summary=False, select=True):
"""Add a single annotation expression to the Query."""
annotation = annotation.resolve_expression(self, allow_joins=True, reuse=None,
summarize=is_summary)
if select:
self.append_annotation_mask([alias])
else:
self.set_annotation_mask(set(self.annotation_select).difference({alias}))
self.annotations[alias] = annotation
def resolve_expression(self, query, *args, **kwargs):
clone = self.clone()
# Subqueries need to use a different set of aliases than the outer query.
clone.bump_prefix(query)
clone.subquery = True
clone.where.resolve_expression(query, *args, **kwargs)
for key, value in clone.annotations.items():
resolved = value.resolve_expression(query, *args, **kwargs)
if hasattr(resolved, 'external_aliases'):
resolved.external_aliases.update(clone.external_aliases)
clone.annotations[key] = resolved
# Outer query's aliases are considered external.
for alias, table in query.alias_map.items():
clone.external_aliases[alias] = (
(isinstance(table, Join) and table.join_field.related_model._meta.db_table != alias) or
(isinstance(table, BaseTable) and table.table_name != table.table_alias)
)
return clone
def get_external_cols(self):
exprs = chain(self.annotations.values(), self.where.children)
return [
col for col in self._gen_cols(exprs, include_external=True)
if col.alias in self.external_aliases
]
def as_sql(self, compiler, connection):
# Some backends (e.g. Oracle) raise an error when a subquery contains
# unnecessary ORDER BY clause.
if (
self.subquery and
not connection.features.ignores_unnecessary_order_by_in_subqueries
):
self.clear_ordering(force=False)
sql, params = self.get_compiler(connection=connection).as_sql()
if self.subquery:
sql = '(%s)' % sql
return sql, params
def resolve_lookup_value(self, value, can_reuse, allow_joins):
if hasattr(value, 'resolve_expression'):
value = value.resolve_expression(
self, reuse=can_reuse, allow_joins=allow_joins,
)
elif isinstance(value, (list, tuple)):
# The items of the iterable may be expressions and therefore need
# to be resolved independently.
values = (
self.resolve_lookup_value(sub_value, can_reuse, allow_joins)
for sub_value in value
)
type_ = type(value)
if hasattr(type_, '_make'): # namedtuple
return type_(*values)
return type_(values)
return value
def solve_lookup_type(self, lookup):
"""
Solve the lookup type from the lookup (e.g.: 'foobar__id__icontains').
"""
lookup_splitted = lookup.split(LOOKUP_SEP)
if self.annotations:
expression, expression_lookups = refs_expression(lookup_splitted, self.annotations)
if expression:
return expression_lookups, (), expression
_, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta())
field_parts = lookup_splitted[0:len(lookup_splitted) - len(lookup_parts)]
if len(lookup_parts) > 1 and not field_parts:
raise FieldError(
'Invalid lookup "%s" for model %s".' %
(lookup, self.get_meta().model.__name__)
)
return lookup_parts, field_parts, False
def check_query_object_type(self, value, opts, field):
"""
Check whether the object passed while querying is of the correct type.
If not, raise a ValueError specifying the wrong object.
"""
if hasattr(value, '_meta'):
if not check_rel_lookup_compatibility(value._meta.model, opts, field):
raise ValueError(
'Cannot query "%s": Must be "%s" instance.' %
(value, opts.object_name))
def check_related_objects(self, field, value, opts):
"""Check the type of object passed to query relations."""
if field.is_relation:
# Check that the field and the queryset use the same model in a
# query like .filter(author=Author.objects.all()). For example, the
# opts would be Author's (from the author field) and value.model
# would be Author.objects.all() queryset's .model (Author also).
# The field is the related field on the lhs side.
if (isinstance(value, Query) and not value.has_select_fields and
not check_rel_lookup_compatibility(value.model, opts, field)):
raise ValueError(
'Cannot use QuerySet for "%s": Use a QuerySet for "%s".' %
(value.model._meta.object_name, opts.object_name)
)
elif hasattr(value, '_meta'):
self.check_query_object_type(value, opts, field)
elif hasattr(value, '__iter__'):
for v in value:
self.check_query_object_type(v, opts, field)
def check_filterable(self, expression):
"""Raise an error if expression cannot be used in a WHERE clause."""
if (
hasattr(expression, 'resolve_expression') and
not getattr(expression, 'filterable', True)
):
raise NotSupportedError(
expression.__class__.__name__ + ' is disallowed in the filter '
'clause.'
)
if hasattr(expression, 'get_source_expressions'):
for expr in expression.get_source_expressions():
self.check_filterable(expr)
def build_lookup(self, lookups, lhs, rhs):
"""
Try to extract transforms and lookup from given lhs.
The lhs value is something that works like SQLExpression.
The rhs value is what the lookup is going to compare against.
The lookups is a list of names to extract using get_lookup()
and get_transform().
"""
# __exact is the default lookup if one isn't given.
*transforms, lookup_name = lookups or ['exact']
for name in transforms:
lhs = self.try_transform(lhs, name)
# First try get_lookup() so that the lookup takes precedence if the lhs
# supports both transform and lookup for the name.
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
if lhs.field.is_relation:
raise FieldError('Related Field got invalid lookup: {}'.format(lookup_name))
# A lookup wasn't found. Try to interpret the name as a transform
# and do an Exact lookup against it.
lhs = self.try_transform(lhs, lookup_name)
lookup_name = 'exact'
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
return
lookup = lookup_class(lhs, rhs)
# Interpret '__exact=None' as the sql 'is NULL'; otherwise, reject all
# uses of None as a query value unless the lookup supports it.
if lookup.rhs is None and not lookup.can_use_none_as_rhs:
if lookup_name not in ('exact', 'iexact'):
raise ValueError("Cannot use None as a query value")
return lhs.get_lookup('isnull')(lhs, True)
# For Oracle '' is equivalent to null. The check must be done at this
# stage because join promotion can't be done in the compiler. Using
# DEFAULT_DB_ALIAS isn't nice but it's the best that can be done here.
# A similar thing is done in is_nullable(), too.
if (
lookup_name == 'exact' and
lookup.rhs == '' and
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls
):
return lhs.get_lookup('isnull')(lhs, True)
return lookup
def try_transform(self, lhs, name):
"""
Helper method for build_lookup(). Try to fetch and initialize
a transform for name parameter from lhs.
"""
transform_class = lhs.get_transform(name)
if transform_class:
return transform_class(lhs)
else:
output_field = lhs.output_field.__class__
suggested_lookups = difflib.get_close_matches(name, output_field.get_lookups())
if suggested_lookups:
suggestion = ', perhaps you meant %s?' % ' or '.join(suggested_lookups)
else:
suggestion = '.'
raise FieldError(
"Unsupported lookup '%s' for %s or join on the field not "
"permitted%s" % (name, output_field.__name__, suggestion)
)
def build_filter(self, filter_expr, branch_negated=False, current_negated=False,
can_reuse=None, allow_joins=True, split_subq=True,
check_filterable=True):
"""
Build a WhereNode for a single filter clause but don't add it
to this Query. Query.add_q() will then add this filter to the where
Node.
The 'branch_negated' tells us if the current branch contains any
negations. This will be used to determine if subqueries are needed.
The 'current_negated' is used to determine if the current filter is
negated or not and this will be used to determine if IS NULL filtering
is needed.
The difference between current_negated and branch_negated is that
branch_negated is set on first negation, but current_negated is
flipped for each negation.
Note that add_filter will not do any negating itself, that is done
upper in the code by add_q().
The 'can_reuse' is a set of reusable joins for multijoins.
The method will create a filter clause that can be added to the current
query. However, if the filter isn't added to the query then the caller
is responsible for unreffing the joins used.
"""
if isinstance(filter_expr, dict):
raise FieldError("Cannot parse keyword query as dict")
if isinstance(filter_expr, Q):
return self._add_q(
filter_expr,
branch_negated=branch_negated,
current_negated=current_negated,
used_aliases=can_reuse,
allow_joins=allow_joins,
split_subq=split_subq,
check_filterable=check_filterable,
)
if hasattr(filter_expr, 'resolve_expression'):
if not getattr(filter_expr, 'conditional', False):
raise TypeError('Cannot filter against a non-conditional expression.')
condition = filter_expr.resolve_expression(self, allow_joins=allow_joins)
if not isinstance(condition, Lookup):
condition = self.build_lookup(['exact'], condition, True)
return WhereNode([condition], connector=AND), []
arg, value = filter_expr
if not arg:
raise FieldError("Cannot parse keyword query %r" % arg)
lookups, parts, reffed_expression = self.solve_lookup_type(arg)
if check_filterable:
self.check_filterable(reffed_expression)
if not allow_joins and len(parts) > 1:
raise FieldError("Joined field references are not permitted in this query")
pre_joins = self.alias_refcount.copy()
value = self.resolve_lookup_value(value, can_reuse, allow_joins)
used_joins = {k for k, v in self.alias_refcount.items() if v > pre_joins.get(k, 0)}
if check_filterable:
self.check_filterable(value)
if reffed_expression:
condition = self.build_lookup(lookups, reffed_expression, value)
return WhereNode([condition], connector=AND), []
opts = self.get_meta()
alias = self.get_initial_alias()
allow_many = not branch_negated or not split_subq
try:
join_info = self.setup_joins(
parts, opts, alias, can_reuse=can_reuse, allow_many=allow_many,
)
# Prevent iterator from being consumed by check_related_objects()
if isinstance(value, Iterator):
value = list(value)
self.check_related_objects(join_info.final_field, value, join_info.opts)
# split_exclude() needs to know which joins were generated for the
# lookup parts
self._lookup_joins = join_info.joins
except MultiJoin as e:
return self.split_exclude(filter_expr, can_reuse, e.names_with_path)
# Update used_joins before trimming since they are reused to determine
# which joins could be later promoted to INNER.
used_joins.update(join_info.joins)
targets, alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if can_reuse is not None:
can_reuse.update(join_list)
if join_info.final_field.is_relation:
# No support for transforms for relational fields
num_lookups = len(lookups)
if num_lookups > 1:
raise FieldError('Related Field got invalid lookup: {}'.format(lookups[0]))
if len(targets) == 1:
col = self._get_col(targets[0], join_info.final_field, alias)
else:
col = MultiColSource(alias, targets, join_info.targets, join_info.final_field)
else:
col = self._get_col(targets[0], join_info.final_field, alias)
condition = self.build_lookup(lookups, col, value)
lookup_type = condition.lookup_name
clause = WhereNode([condition], connector=AND)
require_outer = lookup_type == 'isnull' and condition.rhs is True and not current_negated
if current_negated and (lookup_type != 'isnull' or condition.rhs is False) and condition.rhs is not None:
require_outer = True
if lookup_type != 'isnull':
# The condition added here will be SQL like this:
# NOT (col IS NOT NULL), where the first NOT is added in
# upper layers of code. The reason for addition is that if col
# is null, then col != someval will result in SQL "unknown"
# which isn't the same as in Python. The Python None handling
# is wanted, and it can be gotten by
# (col IS NULL OR col != someval)
# <=>
# NOT (col IS NOT NULL AND col = someval).
if (
self.is_nullable(targets[0]) or
self.alias_map[join_list[-1]].join_type == LOUTER
):
lookup_class = targets[0].get_lookup('isnull')
col = self._get_col(targets[0], join_info.targets[0], alias)
clause.add(lookup_class(col, False), AND)
# If someval is a nullable column, someval IS NOT NULL is
# added.
if isinstance(value, Col) and self.is_nullable(value.target):
lookup_class = value.target.get_lookup('isnull')
clause.add(lookup_class(value, False), AND)
return clause, used_joins if not require_outer else ()
def add_filter(self, filter_lhs, filter_rhs):
self.add_q(Q((filter_lhs, filter_rhs)))
def add_q(self, q_object):
"""
A preprocessor for the internal _add_q(). Responsible for doing final
join promotion.
"""
# For join promotion this case is doing an AND for the added q_object
# and existing conditions. So, any existing inner join forces the join
# type to remain inner. Existing outer joins can however be demoted.
# (Consider case where rel_a is LOUTER and rel_a__col=1 is added - if
# rel_a doesn't produce any rows, then the whole condition must fail.
# So, demotion is OK.
existing_inner = {a for a in self.alias_map if self.alias_map[a].join_type == INNER}
clause, _ = self._add_q(q_object, self.used_aliases)
if clause:
self.where.add(clause, AND)
self.demote_joins(existing_inner)
def build_where(self, filter_expr):
return self.build_filter(filter_expr, allow_joins=False)[0]
def clear_where(self):
self.where = WhereNode()
def _add_q(self, q_object, used_aliases, branch_negated=False,
current_negated=False, allow_joins=True, split_subq=True,
check_filterable=True):
"""Add a Q-object to the current filter."""
connector = q_object.connector
current_negated = current_negated ^ q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
joinpromoter = JoinPromoter(q_object.connector, len(q_object.children), current_negated)
for child in q_object.children:
child_clause, needed_inner = self.build_filter(
child, can_reuse=used_aliases, branch_negated=branch_negated,
current_negated=current_negated, allow_joins=allow_joins,
split_subq=split_subq, check_filterable=check_filterable,
)
joinpromoter.add_votes(needed_inner)
if child_clause:
target_clause.add(child_clause, connector)
needed_inner = joinpromoter.update_join_types(self)
return target_clause, needed_inner
def build_filtered_relation_q(self, q_object, reuse, branch_negated=False, current_negated=False):
"""Add a FilteredRelation object to the current filter."""
connector = q_object.connector
current_negated ^= q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
for child in q_object.children:
if isinstance(child, Node):
child_clause = self.build_filtered_relation_q(
child, reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
)
else:
child_clause, _ = self.build_filter(
child, can_reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
allow_joins=True, split_subq=False,
)
target_clause.add(child_clause, connector)
return target_clause
def add_filtered_relation(self, filtered_relation, alias):
filtered_relation.alias = alias
lookups = dict(get_children_from_q(filtered_relation.condition))
relation_lookup_parts, relation_field_parts, _ = self.solve_lookup_type(filtered_relation.relation_name)
if relation_lookup_parts:
raise ValueError(
"FilteredRelation's relation_name cannot contain lookups "
"(got %r)." % filtered_relation.relation_name
)
for lookup in chain(lookups):
lookup_parts, lookup_field_parts, _ = self.solve_lookup_type(lookup)
shift = 2 if not lookup_parts else 1
lookup_field_path = lookup_field_parts[:-shift]
for idx, lookup_field_part in enumerate(lookup_field_path):
if len(relation_field_parts) > idx:
if relation_field_parts[idx] != lookup_field_part:
raise ValueError(
"FilteredRelation's condition doesn't support "
"relations outside the %r (got %r)."
% (filtered_relation.relation_name, lookup)
)
else:
raise ValueError(
"FilteredRelation's condition doesn't support nested "
"relations deeper than the relation_name (got %r for "
"%r)." % (lookup, filtered_relation.relation_name)
)
self._filtered_relations[filtered_relation.alias] = filtered_relation
def names_to_path(self, names, opts, allow_many=True, fail_on_missing=False):
"""
Walk the list of names and turns them into PathInfo tuples. A single
name in 'names' can generate multiple PathInfos (m2m, for example).
'names' is the path of names to travel, 'opts' is the model Options we
start the name resolving from, 'allow_many' is as for setup_joins().
If fail_on_missing is set to True, then a name that can't be resolved
will generate a FieldError.
Return a list of PathInfo tuples. In addition return the final field
(the last used join field) and target (which is a field guaranteed to
contain the same value as the final field). Finally, return those names
that weren't found (which are likely transforms and the final lookup).
"""
path, names_with_path = [], []
for pos, name in enumerate(names):
cur_names_with_path = (name, [])
if name == 'pk':
name = opts.pk.name
field = None
filtered_relation = None
try:
field = opts.get_field(name)
except FieldDoesNotExist:
if name in self.annotation_select:
field = self.annotation_select[name].output_field
elif name in self._filtered_relations and pos == 0:
filtered_relation = self._filtered_relations[name]
if LOOKUP_SEP in filtered_relation.relation_name:
parts = filtered_relation.relation_name.split(LOOKUP_SEP)
filtered_relation_path, field, _, _ = self.names_to_path(
parts, opts, allow_many, fail_on_missing,
)
path.extend(filtered_relation_path[:-1])
else:
field = opts.get_field(filtered_relation.relation_name)
if field is not None:
# Fields that contain one-to-many relations with a generic
# model (like a GenericForeignKey) cannot generate reverse
# relations and therefore cannot be used for reverse querying.
if field.is_relation and not field.related_model:
raise FieldError(
"Field %r does not generate an automatic reverse "
"relation and therefore cannot be used for reverse "
"querying. If it is a GenericForeignKey, consider "
"adding a GenericRelation." % name
)
try:
model = field.model._meta.concrete_model
except AttributeError:
# QuerySet.annotate() may introduce fields that aren't
# attached to a model.
model = None
else:
# We didn't find the current field, so move position back
# one step.
pos -= 1
if pos == -1 or fail_on_missing:
available = sorted([
*get_field_names_from_opts(opts),
*self.annotation_select,
*self._filtered_relations,
])
raise FieldError("Cannot resolve keyword '%s' into field. "
"Choices are: %s" % (name, ", ".join(available)))
break
# Check if we need any joins for concrete inheritance cases (the
# field lives in parent, but we are currently in one of its
# children)
if model is not opts.model:
path_to_parent = opts.get_path_to_parent(model)
if path_to_parent:
path.extend(path_to_parent)
cur_names_with_path[1].extend(path_to_parent)
opts = path_to_parent[-1].to_opts
if hasattr(field, 'get_path_info'):
pathinfos = field.get_path_info(filtered_relation)
if not allow_many:
for inner_pos, p in enumerate(pathinfos):
if p.m2m:
cur_names_with_path[1].extend(pathinfos[0:inner_pos + 1])
names_with_path.append(cur_names_with_path)
raise MultiJoin(pos + 1, names_with_path)
last = pathinfos[-1]
path.extend(pathinfos)
final_field = last.join_field
opts = last.to_opts
targets = last.target_fields
cur_names_with_path[1].extend(pathinfos)
names_with_path.append(cur_names_with_path)
else:
# Local non-relational field.
final_field = field
targets = (field,)
if fail_on_missing and pos + 1 != len(names):
raise FieldError(
"Cannot resolve keyword %r into field. Join on '%s'"
" not permitted." % (names[pos + 1], name))
break
return path, final_field, targets, names[pos + 1:]
def setup_joins(self, names, opts, alias, can_reuse=None, allow_many=True):
"""
Compute the necessary table joins for the passage through the fields
given in 'names'. 'opts' is the Options class for the current model
(which gives the table we are starting from), 'alias' is the alias for
the table to start the joining from.
The 'can_reuse' defines the reverse foreign key joins we can reuse. It
can be None in which case all joins are reusable or a set of aliases
that can be reused. Note that non-reverse foreign keys are always
reusable when using setup_joins().
If 'allow_many' is False, then any reverse foreign key seen will
generate a MultiJoin exception.
Return the final field involved in the joins, the target field (used
for any 'where' constraint), the final 'opts' value, the joins, the
field path traveled to generate the joins, and a transform function
that takes a field and alias and is equivalent to `field.get_col(alias)`
in the simple case but wraps field transforms if they were included in
names.
The target field is the field containing the concrete value. Final
field can be something different, for example foreign key pointing to
that value. Final field is needed for example in some value
conversions (convert 'obj' in fk__id=obj to pk val using the foreign
key field for example).
"""
joins = [alias]
# The transform can't be applied yet, as joins must be trimmed later.
# To avoid making every caller of this method look up transforms
# directly, compute transforms here and create a partial that converts
# fields to the appropriate wrapped version.
def final_transformer(field, alias):
if not self.alias_cols:
alias = None
return field.get_col(alias)
# Try resolving all the names as fields first. If there's an error,
# treat trailing names as lookups until a field can be resolved.
last_field_exception = None
for pivot in range(len(names), 0, -1):
try:
path, final_field, targets, rest = self.names_to_path(
names[:pivot], opts, allow_many, fail_on_missing=True,
)
except FieldError as exc:
if pivot == 1:
# The first item cannot be a lookup, so it's safe
# to raise the field error here.
raise
else:
last_field_exception = exc
else:
# The transforms are the remaining items that couldn't be
# resolved into fields.
transforms = names[pivot:]
break
for name in transforms:
def transform(field, alias, *, name, previous):
try:
wrapped = previous(field, alias)
return self.try_transform(wrapped, name)
except FieldError:
# FieldError is raised if the transform doesn't exist.
if isinstance(final_field, Field) and last_field_exception:
raise last_field_exception
else:
raise
final_transformer = functools.partial(transform, name=name, previous=final_transformer)
# Then, add the path to the query's joins. Note that we can't trim
# joins at this stage - we will need the information about join type
# of the trimmed joins.
for join in path:
if join.filtered_relation:
filtered_relation = join.filtered_relation.clone()
table_alias = filtered_relation.alias
else:
filtered_relation = None
table_alias = None
opts = join.to_opts
if join.direct:
nullable = self.is_nullable(join.join_field)
else:
nullable = True
connection = Join(
opts.db_table, alias, table_alias, INNER, join.join_field,
nullable, filtered_relation=filtered_relation,
)
reuse = can_reuse if join.m2m else None
alias = self.join(connection, reuse=reuse)
joins.append(alias)
if filtered_relation:
filtered_relation.path = joins[:]
return JoinInfo(final_field, targets, opts, joins, path, final_transformer)
def trim_joins(self, targets, joins, path):
"""
The 'target' parameter is the final field being joined to, 'joins'
is the full list of join aliases. The 'path' contain the PathInfos
used to create the joins.
Return the final target field and table alias and the new active
joins.
Always trim any direct join if the target column is already in the
previous table. Can't trim reverse joins as it's unknown if there's
anything on the other side of the join.
"""
joins = joins[:]
for pos, info in enumerate(reversed(path)):
if len(joins) == 1 or not info.direct:
break
if info.filtered_relation:
break
join_targets = {t.column for t in info.join_field.foreign_related_fields}
cur_targets = {t.column for t in targets}
if not cur_targets.issubset(join_targets):
break
targets_dict = {r[1].column: r[0] for r in info.join_field.related_fields if r[1].column in cur_targets}
targets = tuple(targets_dict[t.column] for t in targets)
self.unref_alias(joins.pop())
return targets, joins[-1], joins
@classmethod
def _gen_cols(cls, exprs, include_external=False):
for expr in exprs:
if isinstance(expr, Col):
yield expr
elif include_external and callable(getattr(expr, 'get_external_cols', None)):
yield from expr.get_external_cols()
elif hasattr(expr, 'get_source_expressions'):
yield from cls._gen_cols(
expr.get_source_expressions(),
include_external=include_external,
)
@classmethod
def _gen_col_aliases(cls, exprs):
yield from (expr.alias for expr in cls._gen_cols(exprs))
def resolve_ref(self, name, allow_joins=True, reuse=None, summarize=False):
annotation = self.annotations.get(name)
if annotation is not None:
if not allow_joins:
for alias in self._gen_col_aliases([annotation]):
if isinstance(self.alias_map[alias], Join):
raise FieldError(
'Joined field references are not permitted in '
'this query'
)
if summarize:
# Summarize currently means we are doing an aggregate() query
# which is executed as a wrapped subquery if any of the
# aggregate() elements reference an existing annotation. In
# that case we need to return a Ref to the subquery's annotation.
if name not in self.annotation_select:
raise FieldError(
"Cannot aggregate over the '%s' alias. Use annotate() "
"to promote it." % name
)
return Ref(name, self.annotation_select[name])
else:
return annotation
else:
field_list = name.split(LOOKUP_SEP)
annotation = self.annotations.get(field_list[0])
if annotation is not None:
for transform in field_list[1:]:
annotation = self.try_transform(annotation, transform)
return annotation
join_info = self.setup_joins(field_list, self.get_meta(), self.get_initial_alias(), can_reuse=reuse)
targets, final_alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if not allow_joins and len(join_list) > 1:
raise FieldError('Joined field references are not permitted in this query')
if len(targets) > 1:
raise FieldError("Referencing multicolumn fields with F() objects "
"isn't supported")
# Verify that the last lookup in name is a field or a transform:
# transform_function() raises FieldError if not.
transform = join_info.transform_function(targets[0], final_alias)
if reuse is not None:
reuse.update(join_list)
return transform
def split_exclude(self, filter_expr, can_reuse, names_with_path):
"""
When doing an exclude against any kind of N-to-many relation, we need
to use a subquery. This method constructs the nested query, given the
original exclude filter (filter_expr) and the portion up to the first
N-to-many relation field.
For example, if the origin filter is ~Q(child__name='foo'), filter_expr
is ('child__name', 'foo') and can_reuse is a set of joins usable for
filters in the original query.
We will turn this into equivalent of:
WHERE NOT EXISTS(
SELECT 1
FROM child
WHERE name = 'foo' AND child.parent_id = parent.id
LIMIT 1
)
"""
# Generate the inner query.
query = Query(self.model)
query._filtered_relations = self._filtered_relations
filter_lhs, filter_rhs = filter_expr
if isinstance(filter_rhs, OuterRef):
filter_rhs = OuterRef(filter_rhs)
elif isinstance(filter_rhs, F):
filter_rhs = OuterRef(filter_rhs.name)
query.add_filter(filter_lhs, filter_rhs)
query.clear_ordering(force=True)
# Try to have as simple as possible subquery -> trim leading joins from
# the subquery.
trimmed_prefix, contains_louter = query.trim_start(names_with_path)
col = query.select[0]
select_field = col.target
alias = col.alias
if alias in can_reuse:
pk = select_field.model._meta.pk
# Need to add a restriction so that outer query's filters are in effect for
# the subquery, too.
query.bump_prefix(self)
lookup_class = select_field.get_lookup('exact')
# Note that the query.select[0].alias is different from alias
# due to bump_prefix above.
lookup = lookup_class(pk.get_col(query.select[0].alias),
pk.get_col(alias))
query.where.add(lookup, AND)
query.external_aliases[alias] = True
lookup_class = select_field.get_lookup('exact')
lookup = lookup_class(col, ResolvedOuterRef(trimmed_prefix))
query.where.add(lookup, AND)
condition, needed_inner = self.build_filter(Exists(query))
if contains_louter:
or_null_condition, _ = self.build_filter(
('%s__isnull' % trimmed_prefix, True),
current_negated=True, branch_negated=True, can_reuse=can_reuse)
condition.add(or_null_condition, OR)
# Note that the end result will be:
# (outercol NOT IN innerq AND outercol IS NOT NULL) OR outercol IS NULL.
# This might look crazy but due to how IN works, this seems to be
# correct. If the IS NOT NULL check is removed then outercol NOT
# IN will return UNKNOWN. If the IS NULL check is removed, then if
# outercol IS NULL we will not match the row.
return condition, needed_inner
def set_empty(self):
self.where.add(NothingNode(), AND)
for query in self.combined_queries:
query.set_empty()
def is_empty(self):
return any(isinstance(c, NothingNode) for c in self.where.children)
def set_limits(self, low=None, high=None):
"""
Adjust the limits on the rows retrieved. Use low/high to set these,
as it makes it more Pythonic to read and write. When the SQL query is
created, convert them to the appropriate offset and limit values.
Apply any limits passed in here to the existing constraints. Add low
to the current low value and clamp both to any existing high value.
"""
if high is not None:
if self.high_mark is not None:
self.high_mark = min(self.high_mark, self.low_mark + high)
else:
self.high_mark = self.low_mark + high
if low is not None:
if self.high_mark is not None:
self.low_mark = min(self.high_mark, self.low_mark + low)
else:
self.low_mark = self.low_mark + low
if self.low_mark == self.high_mark:
self.set_empty()
def clear_limits(self):
"""Clear any existing limits."""
self.low_mark, self.high_mark = 0, None
@property
def is_sliced(self):
return self.low_mark != 0 or self.high_mark is not None
def has_limit_one(self):
return self.high_mark is not None and (self.high_mark - self.low_mark) == 1
def can_filter(self):
"""
Return True if adding filters to this instance is still possible.
Typically, this means no limits or offsets have been put on the results.
"""
return not self.is_sliced
def clear_select_clause(self):
"""Remove all fields from SELECT clause."""
self.select = ()
self.default_cols = False
self.select_related = False
self.set_extra_mask(())
self.set_annotation_mask(())
def clear_select_fields(self):
"""
Clear the list of fields to select (but not extra_select columns).
Some queryset types completely replace any existing list of select
columns.
"""
self.select = ()
self.values_select = ()
def add_select_col(self, col, name):
self.select += col,
self.values_select += name,
def set_select(self, cols):
self.default_cols = False
self.select = tuple(cols)
def add_distinct_fields(self, *field_names):
"""
Add and resolve the given fields to the query's "distinct on" clause.
"""
self.distinct_fields = field_names
self.distinct = True
def add_fields(self, field_names, allow_m2m=True):
"""
Add the given (model) fields to the select set. Add the field names in
the order specified.
"""
alias = self.get_initial_alias()
opts = self.get_meta()
try:
cols = []
for name in field_names:
# Join promotion note - we must not remove any rows here, so
# if there is no existing joins, use outer join.
join_info = self.setup_joins(name.split(LOOKUP_SEP), opts, alias, allow_many=allow_m2m)
targets, final_alias, joins = self.trim_joins(
join_info.targets,
join_info.joins,
join_info.path,
)
for target in targets:
cols.append(join_info.transform_function(target, final_alias))
if cols:
self.set_select(cols)
except MultiJoin:
raise FieldError("Invalid field name: '%s'" % name)
except FieldError:
if LOOKUP_SEP in name:
# For lookups spanning over relationships, show the error
# from the model on which the lookup failed.
raise
elif name in self.annotations:
raise FieldError(
"Cannot select the '%s' alias. Use annotate() to promote "
"it." % name
)
else:
names = sorted([
*get_field_names_from_opts(opts), *self.extra,
*self.annotation_select, *self._filtered_relations
])
raise FieldError("Cannot resolve keyword %r into field. "
"Choices are: %s" % (name, ", ".join(names)))
def add_ordering(self, *ordering):
"""
Add items from the 'ordering' sequence to the query's "order by"
clause. These items are either field names (not column names) --
possibly with a direction prefix ('-' or '?') -- or OrderBy
expressions.
If 'ordering' is empty, clear all ordering from the query.
"""
errors = []
for item in ordering:
if isinstance(item, str):
if item == '?':
continue
if item.startswith('-'):
item = item[1:]
if item in self.annotations:
continue
if self.extra and item in self.extra:
continue
# names_to_path() validates the lookup. A descriptive
# FieldError will be raise if it's not.
self.names_to_path(item.split(LOOKUP_SEP), self.model._meta)
elif not hasattr(item, 'resolve_expression'):
errors.append(item)
if getattr(item, 'contains_aggregate', False):
raise FieldError(
'Using an aggregate in order_by() without also including '
'it in annotate() is not allowed: %s' % item
)
if errors:
raise FieldError('Invalid order_by arguments: %s' % errors)
if ordering:
self.order_by += ordering
else:
self.default_ordering = False
def clear_ordering(self, force=False, clear_default=True):
"""
Remove any ordering settings if the current query allows it without
side effects, set 'force' to True to clear the ordering regardless.
If 'clear_default' is True, there will be no ordering in the resulting
query (not even the model's default).
"""
if not force and (self.is_sliced or self.distinct_fields or self.select_for_update):
return
self.order_by = ()
self.extra_order_by = ()
if clear_default:
self.default_ordering = False
def set_group_by(self, allow_aliases=True):
"""
Expand the GROUP BY clause required by the query.
This will usually be the set of all non-aggregate fields in the
return data. If the database backend supports grouping by the
primary key, and the query would be equivalent, the optimization
will be made automatically.
"""
# Column names from JOINs to check collisions with aliases.
if allow_aliases:
column_names = set()
seen_models = set()
for join in list(self.alias_map.values())[1:]: # Skip base table.
model = join.join_field.related_model
if model not in seen_models:
column_names.update({
field.column
for field in model._meta.local_concrete_fields
})
seen_models.add(model)
group_by = list(self.select)
if self.annotation_select:
for alias, annotation in self.annotation_select.items():
if not allow_aliases or alias in column_names:
alias = None
group_by_cols = annotation.get_group_by_cols(alias=alias)
group_by.extend(group_by_cols)
self.group_by = tuple(group_by)
def add_select_related(self, fields):
"""
Set up the select_related data structure so that we only select
certain related models (as opposed to all models, when
self.select_related=True).
"""
if isinstance(self.select_related, bool):
field_dict = {}
else:
field_dict = self.select_related
for field in fields:
d = field_dict
for part in field.split(LOOKUP_SEP):
d = d.setdefault(part, {})
self.select_related = field_dict
def add_extra(self, select, select_params, where, params, tables, order_by):
"""
Add data to the various extra_* attributes for user-created additions
to the query.
"""
if select:
# We need to pair any placeholder markers in the 'select'
# dictionary with their parameters in 'select_params' so that
# subsequent updates to the select dictionary also adjust the
# parameters appropriately.
select_pairs = {}
if select_params:
param_iter = iter(select_params)
else:
param_iter = iter([])
for name, entry in select.items():
entry = str(entry)
entry_params = []
pos = entry.find("%s")
while pos != -1:
if pos == 0 or entry[pos - 1] != '%':
entry_params.append(next(param_iter))
pos = entry.find("%s", pos + 2)
select_pairs[name] = (entry, entry_params)
self.extra.update(select_pairs)
if where or params:
self.where.add(ExtraWhere(where, params), AND)
if tables:
self.extra_tables += tuple(tables)
if order_by:
self.extra_order_by = order_by
def clear_deferred_loading(self):
"""Remove any fields from the deferred loading set."""
self.deferred_loading = (frozenset(), True)
def add_deferred_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
exclude from loading from the database when automatic column selection
is done. Add the new field names to any existing field names that
are deferred (or removed from any existing field names that are marked
as the only ones for immediate loading).
"""
# Fields on related models are stored in the literal double-underscore
# format, so that we can use a set datastructure. We do the foo__bar
# splitting and handling when computing the SQL column names (as part of
# get_columns()).
existing, defer = self.deferred_loading
if defer:
# Add to existing deferred names.
self.deferred_loading = existing.union(field_names), True
else:
# Remove names from the set of any existing "immediate load" names.
if new_existing := existing.difference(field_names):
self.deferred_loading = new_existing, False
else:
self.clear_deferred_loading()
if new_only := set(field_names).difference(existing):
self.deferred_loading = new_only, True
def add_immediate_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
retrieve when the SQL is executed ("immediate loading" fields). The
field names replace any existing immediate loading field names. If
there are field names already specified for deferred loading, remove
those names from the new field_names before storing the new names
for immediate loading. (That is, immediate loading overrides any
existing immediate values, but respects existing deferrals.)
"""
existing, defer = self.deferred_loading
field_names = set(field_names)
if 'pk' in field_names:
field_names.remove('pk')
field_names.add(self.get_meta().pk.name)
if defer:
# Remove any existing deferred names from the current set before
# setting the new names.
self.deferred_loading = field_names.difference(existing), False
else:
# Replace any existing "immediate load" field names.
self.deferred_loading = frozenset(field_names), False
def get_loaded_field_names(self):
"""
If any fields are marked to be deferred, return a dictionary mapping
models to a set of names in those fields that will be loaded. If a
model is not in the returned dictionary, none of its fields are
deferred.
If no fields are marked for deferral, return an empty dictionary.
"""
# We cache this because we call this function multiple times
# (compiler.fill_related_selections, query.iterator)
try:
return self._loaded_field_names_cache
except AttributeError:
collection = {}
self.deferred_to_data(collection, self.get_loaded_field_names_cb)
self._loaded_field_names_cache = collection
return collection
def get_loaded_field_names_cb(self, target, model, fields):
"""Callback used by get_deferred_field_names()."""
target[model] = {f.attname for f in fields}
def set_annotation_mask(self, names):
"""Set the mask of annotations that will be returned by the SELECT."""
if names is None:
self.annotation_select_mask = None
else:
self.annotation_select_mask = set(names)
self._annotation_select_cache = None
def append_annotation_mask(self, names):
if self.annotation_select_mask is not None:
self.set_annotation_mask(self.annotation_select_mask.union(names))
def set_extra_mask(self, names):
"""
Set the mask of extra select items that will be returned by SELECT.
Don't remove them from the Query since they might be used later.
"""
if names is None:
self.extra_select_mask = None
else:
self.extra_select_mask = set(names)
self._extra_select_cache = None
def set_values(self, fields):
self.select_related = False
self.clear_deferred_loading()
self.clear_select_fields()
if fields:
field_names = []
extra_names = []
annotation_names = []
if not self.extra and not self.annotations:
# Shortcut - if there are no extra or annotations, then
# the values() clause must be just field names.
field_names = list(fields)
else:
self.default_cols = False
for f in fields:
if f in self.extra_select:
extra_names.append(f)
elif f in self.annotation_select:
annotation_names.append(f)
else:
field_names.append(f)
self.set_extra_mask(extra_names)
self.set_annotation_mask(annotation_names)
selected = frozenset(field_names + extra_names + annotation_names)
else:
field_names = [f.attname for f in self.model._meta.concrete_fields]
selected = frozenset(field_names)
# Selected annotations must be known before setting the GROUP BY
# clause.
if self.group_by is True:
self.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
self.set_group_by(allow_aliases=False)
self.clear_select_fields()
elif self.group_by:
# Resolve GROUP BY annotation references if they are not part of
# the selected fields anymore.
group_by = []
for expr in self.group_by:
if isinstance(expr, Ref) and expr.refs not in selected:
expr = self.annotations[expr.refs]
group_by.append(expr)
self.group_by = tuple(group_by)
self.values_select = tuple(field_names)
self.add_fields(field_names, True)
@property
def annotation_select(self):
"""
Return the dictionary of aggregate columns that are not masked and
should be used in the SELECT clause. Cache this result for performance.
"""
if self._annotation_select_cache is not None:
return self._annotation_select_cache
elif not self.annotations:
return {}
elif self.annotation_select_mask is not None:
self._annotation_select_cache = {
k: v for k, v in self.annotations.items()
if k in self.annotation_select_mask
}
return self._annotation_select_cache
else:
return self.annotations
@property
def extra_select(self):
if self._extra_select_cache is not None:
return self._extra_select_cache
if not self.extra:
return {}
elif self.extra_select_mask is not None:
self._extra_select_cache = {
k: v for k, v in self.extra.items()
if k in self.extra_select_mask
}
return self._extra_select_cache
else:
return self.extra
def trim_start(self, names_with_path):
"""
Trim joins from the start of the join path. The candidates for trim
are the PathInfos in names_with_path structure that are m2m joins.
Also set the select column so the start matches the join.
This method is meant to be used for generating the subquery joins &
cols in split_exclude().
Return a lookup usable for doing outerq.filter(lookup=self) and a
boolean indicating if the joins in the prefix contain a LEFT OUTER join.
_"""
all_paths = []
for _, paths in names_with_path:
all_paths.extend(paths)
contains_louter = False
# Trim and operate only on tables that were generated for
# the lookup part of the query. That is, avoid trimming
# joins generated for F() expressions.
lookup_tables = [
t for t in self.alias_map
if t in self._lookup_joins or t == self.base_table
]
for trimmed_paths, path in enumerate(all_paths):
if path.m2m:
break
if self.alias_map[lookup_tables[trimmed_paths + 1]].join_type == LOUTER:
contains_louter = True
alias = lookup_tables[trimmed_paths]
self.unref_alias(alias)
# The path.join_field is a Rel, lets get the other side's field
join_field = path.join_field.field
# Build the filter prefix.
paths_in_prefix = trimmed_paths
trimmed_prefix = []
for name, path in names_with_path:
if paths_in_prefix - len(path) < 0:
break
trimmed_prefix.append(name)
paths_in_prefix -= len(path)
trimmed_prefix.append(
join_field.foreign_related_fields[0].name)
trimmed_prefix = LOOKUP_SEP.join(trimmed_prefix)
# Lets still see if we can trim the first join from the inner query
# (that is, self). We can't do this for:
# - LEFT JOINs because we would miss those rows that have nothing on
# the outer side,
# - INNER JOINs from filtered relations because we would miss their
# filters.
first_join = self.alias_map[lookup_tables[trimmed_paths + 1]]
if first_join.join_type != LOUTER and not first_join.filtered_relation:
select_fields = [r[0] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths + 1]
self.unref_alias(lookup_tables[trimmed_paths])
extra_restriction = join_field.get_extra_restriction(None, lookup_tables[trimmed_paths + 1])
if extra_restriction:
self.where.add(extra_restriction, AND)
else:
# TODO: It might be possible to trim more joins from the start of the
# inner query if it happens to have a longer join chain containing the
# values in select_fields. Lets punt this one for now.
select_fields = [r[1] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths]
# The found starting point is likely a Join instead of a BaseTable reference.
# But the first entry in the query's FROM clause must not be a JOIN.
for table in self.alias_map:
if self.alias_refcount[table] > 0:
self.alias_map[table] = BaseTable(self.alias_map[table].table_name, table)
break
self.set_select([f.get_col(select_alias) for f in select_fields])
return trimmed_prefix, contains_louter
def is_nullable(self, field):
"""
Check if the given field should be treated as nullable.
Some backends treat '' as null and Django treats such fields as
nullable for those backends. In such situations field.null can be
False even if we should treat the field as nullable.
"""
# We need to use DEFAULT_DB_ALIAS here, as QuerySet does not have
# (nor should it have) knowledge of which connection is going to be
# used. The proper fix would be to defer all decisions where
# is_nullable() is needed to the compiler stage, but that is not easy
# to do currently.
return (
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls and
field.empty_strings_allowed
) or field.null
def get_order_dir(field, default='ASC'):
"""
Return the field name and direction for an order specification. For
example, '-foo' is returned as ('foo', 'DESC').
The 'default' param is used to indicate which way no prefix (or a '+'
prefix) should sort. The '-' prefix always sorts the opposite way.
"""
dirn = ORDER_DIR[default]
if field[0] == '-':
return field[1:], dirn[1]
return field, dirn[0]
def add_to_dict(data, key, value):
"""
Add "value" to the set of values for "key", whether or not "key" already
exists.
"""
if key in data:
data[key].add(value)
else:
data[key] = {value}
def is_reverse_o2o(field):
"""
Check if the given field is reverse-o2o. The field is expected to be some
sort of relation field or related object.
"""
return field.is_relation and field.one_to_one and not field.concrete
class JoinPromoter:
"""
A class to abstract away join promotion problems for complex filter
conditions.
"""
def __init__(self, connector, num_children, negated):
self.connector = connector
self.negated = negated
if self.negated:
if connector == AND:
self.effective_connector = OR
else:
self.effective_connector = AND
else:
self.effective_connector = self.connector
self.num_children = num_children
# Maps of table alias to how many times it is seen as required for
# inner and/or outer joins.
self.votes = Counter()
def add_votes(self, votes):
"""
Add single vote per item to self.votes. Parameter can be any
iterable.
"""
self.votes.update(votes)
def update_join_types(self, query):
"""
Change join types so that the generated query is as efficient as
possible, but still correct. So, change as many joins as possible
to INNER, but don't make OUTER joins INNER if that could remove
results from the query.
"""
to_promote = set()
to_demote = set()
# The effective_connector is used so that NOT (a AND b) is treated
# similarly to (a OR b) for join promotion.
for table, votes in self.votes.items():
# We must use outer joins in OR case when the join isn't contained
# in all of the joins. Otherwise the INNER JOIN itself could remove
# valid results. Consider the case where a model with rel_a and
# rel_b relations is queried with rel_a__col=1 | rel_b__col=2. Now,
# if rel_a join doesn't produce any results is null (for example
# reverse foreign key or null value in direct foreign key), and
# there is a matching row in rel_b with col=2, then an INNER join
# to rel_a would remove a valid match from the query. So, we need
# to promote any existing INNER to LOUTER (it is possible this
# promotion in turn will be demoted later on).
if self.effective_connector == 'OR' and votes < self.num_children:
to_promote.add(table)
# If connector is AND and there is a filter that can match only
# when there is a joinable row, then use INNER. For example, in
# rel_a__col=1 & rel_b__col=2, if either of the rels produce NULL
# as join output, then the col=1 or col=2 can't match (as
# NULL=anything is always false).
# For the OR case, if all children voted for a join to be inner,
# then we can use INNER for the join. For example:
# (rel_a__col__icontains=Alex | rel_a__col__icontains=Russell)
# then if rel_a doesn't produce any rows, the whole condition
# can't match. Hence we can safely use INNER join.
if self.effective_connector == 'AND' or (
self.effective_connector == 'OR' and votes == self.num_children):
to_demote.add(table)
# Finally, what happens in cases where we have:
# (rel_a__col=1|rel_b__col=2) & rel_a__col__gte=0
# Now, we first generate the OR clause, and promote joins for it
# in the first if branch above. Both rel_a and rel_b are promoted
# to LOUTER joins. After that we do the AND case. The OR case
# voted no inner joins but the rel_a__col__gte=0 votes inner join
# for rel_a. We demote it back to INNER join (in AND case a single
# vote is enough). The demotion is OK, if rel_a doesn't produce
# rows, then the rel_a__col__gte=0 clause can't be true, and thus
# the whole clause must be false. So, it is safe to use INNER
# join.
# Note that in this example we could just as well have the __gte
# clause and the OR clause swapped. Or we could replace the __gte
# clause with an OR clause containing rel_a__col=1|rel_a__col=2,
# and again we could safely demote to INNER.
query.promote_joins(to_promote)
query.demote_joins(to_demote)
return to_demote
|
1fcf8c8b0b8b143803e4a776130df21e018476d617dd95b89d72358034928f32 | import copy
import datetime
import re
from django.db import DatabaseError
from django.db.backends.base.schema import (
BaseDatabaseSchemaEditor, _related_non_m2m_objects,
)
class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
sql_create_column = "ALTER TABLE %(table)s ADD %(column)s %(definition)s"
sql_alter_column_type = "MODIFY %(column)s %(type)s"
sql_alter_column_null = "MODIFY %(column)s NULL"
sql_alter_column_not_null = "MODIFY %(column)s NOT NULL"
sql_alter_column_default = "MODIFY %(column)s DEFAULT %(default)s"
sql_alter_column_no_default = "MODIFY %(column)s DEFAULT NULL"
sql_alter_column_no_default_null = sql_alter_column_no_default
sql_alter_column_collate = "MODIFY %(column)s %(type)s%(collation)s"
sql_delete_column = "ALTER TABLE %(table)s DROP COLUMN %(column)s"
sql_create_column_inline_fk = 'CONSTRAINT %(name)s REFERENCES %(to_table)s(%(to_column)s)%(deferrable)s'
sql_delete_table = "DROP TABLE %(table)s CASCADE CONSTRAINTS"
sql_create_index = "CREATE INDEX %(name)s ON %(table)s (%(columns)s)%(extra)s"
def quote_value(self, value):
if isinstance(value, (datetime.date, datetime.time, datetime.datetime)):
return "'%s'" % value
elif isinstance(value, str):
return "'%s'" % value.replace("\'", "\'\'").replace('%', '%%')
elif isinstance(value, (bytes, bytearray, memoryview)):
return "'%s'" % value.hex()
elif isinstance(value, bool):
return "1" if value else "0"
else:
return str(value)
def remove_field(self, model, field):
# If the column is an identity column, drop the identity before
# removing the field.
if self._is_identity_column(model._meta.db_table, field.column):
self._drop_identity(model._meta.db_table, field.column)
super().remove_field(model, field)
def delete_model(self, model):
# Run superclass action
super().delete_model(model)
# Clean up manually created sequence.
self.execute("""
DECLARE
i INTEGER;
BEGIN
SELECT COUNT(1) INTO i FROM USER_SEQUENCES
WHERE SEQUENCE_NAME = '%(sq_name)s';
IF i = 1 THEN
EXECUTE IMMEDIATE 'DROP SEQUENCE "%(sq_name)s"';
END IF;
END;
/""" % {'sq_name': self.connection.ops._get_no_autofield_sequence_name(model._meta.db_table)})
def alter_field(self, model, old_field, new_field, strict=False):
try:
super().alter_field(model, old_field, new_field, strict)
except DatabaseError as e:
description = str(e)
# If we're changing type to an unsupported type we need a
# SQLite-ish workaround
if 'ORA-22858' in description or 'ORA-22859' in description:
self._alter_field_type_workaround(model, old_field, new_field)
# If an identity column is changing to a non-numeric type, drop the
# identity first.
elif 'ORA-30675' in description:
self._drop_identity(model._meta.db_table, old_field.column)
self.alter_field(model, old_field, new_field, strict)
# If a primary key column is changing to an identity column, drop
# the primary key first.
elif 'ORA-30673' in description and old_field.primary_key:
self._delete_primary_key(model, strict=True)
self._alter_field_type_workaround(model, old_field, new_field)
else:
raise
def _alter_field_type_workaround(self, model, old_field, new_field):
"""
Oracle refuses to change from some type to other type.
What we need to do instead is:
- Add a nullable version of the desired field with a temporary name. If
the new column is an auto field, then the temporary column can't be
nullable.
- Update the table to transfer values from old to new
- Drop old column
- Rename the new column and possibly drop the nullable property
"""
# Make a new field that's like the new one but with a temporary
# column name.
new_temp_field = copy.deepcopy(new_field)
new_temp_field.null = (new_field.get_internal_type() not in ('AutoField', 'BigAutoField', 'SmallAutoField'))
new_temp_field.column = self._generate_temp_name(new_field.column)
# Add it
self.add_field(model, new_temp_field)
# Explicit data type conversion
# https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf
# /Data-Type-Comparison-Rules.html#GUID-D0C5A47E-6F93-4C2D-9E49-4F2B86B359DD
new_value = self.quote_name(old_field.column)
old_type = old_field.db_type(self.connection)
if re.match('^N?CLOB', old_type):
new_value = "TO_CHAR(%s)" % new_value
old_type = 'VARCHAR2'
if re.match('^N?VARCHAR2', old_type):
new_internal_type = new_field.get_internal_type()
if new_internal_type == 'DateField':
new_value = "TO_DATE(%s, 'YYYY-MM-DD')" % new_value
elif new_internal_type == 'DateTimeField':
new_value = "TO_TIMESTAMP(%s, 'YYYY-MM-DD HH24:MI:SS.FF')" % new_value
elif new_internal_type == 'TimeField':
# TimeField are stored as TIMESTAMP with a 1900-01-01 date part.
new_value = "TO_TIMESTAMP(CONCAT('1900-01-01 ', %s), 'YYYY-MM-DD HH24:MI:SS.FF')" % new_value
# Transfer values across
self.execute("UPDATE %s set %s=%s" % (
self.quote_name(model._meta.db_table),
self.quote_name(new_temp_field.column),
new_value,
))
# Drop the old field
self.remove_field(model, old_field)
# Rename and possibly make the new field NOT NULL
super().alter_field(model, new_temp_field, new_field)
# Recreate foreign key (if necessary) because the old field is not
# passed to the alter_field() and data types of new_temp_field and
# new_field always match.
new_type = new_field.db_type(self.connection)
if (
(old_field.primary_key and new_field.primary_key) or
(old_field.unique and new_field.unique)
) and old_type != new_type:
for _, rel in _related_non_m2m_objects(new_temp_field, new_field):
if rel.field.db_constraint:
self.execute(self._create_fk_sql(rel.related_model, rel.field, '_fk'))
def _alter_column_type_sql(self, model, old_field, new_field, new_type):
auto_field_types = {'AutoField', 'BigAutoField', 'SmallAutoField'}
# Drop the identity if migrating away from AutoField.
if (
old_field.get_internal_type() in auto_field_types and
new_field.get_internal_type() not in auto_field_types and
self._is_identity_column(model._meta.db_table, new_field.column)
):
self._drop_identity(model._meta.db_table, new_field.column)
return super()._alter_column_type_sql(model, old_field, new_field, new_type)
def normalize_name(self, name):
"""
Get the properly shortened and uppercased identifier as returned by
quote_name() but without the quotes.
"""
nn = self.quote_name(name)
if nn[0] == '"' and nn[-1] == '"':
nn = nn[1:-1]
return nn
def _generate_temp_name(self, for_name):
"""Generate temporary names for workarounds that need temp columns."""
suffix = hex(hash(for_name)).upper()[1:]
return self.normalize_name(for_name + "_" + suffix)
def prepare_default(self, value):
return self.quote_value(value)
def _field_should_be_indexed(self, model, field):
create_index = super()._field_should_be_indexed(model, field)
db_type = field.db_type(self.connection)
if db_type is not None and db_type.lower() in self.connection._limited_data_types:
return False
return create_index
def _unique_should_be_added(self, old_field, new_field):
return (
super()._unique_should_be_added(old_field, new_field) and
not self._field_became_primary_key(old_field, new_field)
)
def _is_identity_column(self, table_name, column_name):
with self.connection.cursor() as cursor:
cursor.execute("""
SELECT
CASE WHEN identity_column = 'YES' THEN 1 ELSE 0 END
FROM user_tab_cols
WHERE table_name = %s AND
column_name = %s
""", [self.normalize_name(table_name), self.normalize_name(column_name)])
row = cursor.fetchone()
return row[0] if row else False
def _drop_identity(self, table_name, column_name):
self.execute('ALTER TABLE %(table)s MODIFY %(column)s DROP IDENTITY' % {
'table': self.quote_name(table_name),
'column': self.quote_name(column_name),
})
def _get_default_collation(self, table_name):
with self.connection.cursor() as cursor:
cursor.execute("""
SELECT default_collation FROM user_tables WHERE table_name = %s
""", [self.normalize_name(table_name)])
return cursor.fetchone()[0]
def _alter_column_collation_sql(self, model, new_field, new_type, new_collation):
if new_collation is None:
new_collation = self._get_default_collation(model._meta.db_table)
return super()._alter_column_collation_sql(model, new_field, new_type, new_collation)
|
7fad7a8e1aee86871d418574b5f21ed1ed8c0f4b9910fb0751f5d6deb8234d92 | import logging
from datetime import datetime
from django.db.backends.ddl_references import (
Columns, Expressions, ForeignKeyName, IndexName, Statement, Table,
)
from django.db.backends.utils import names_digest, split_identifier
from django.db.models import Deferrable, Index
from django.db.models.sql import Query
from django.db.transaction import TransactionManagementError, atomic
from django.utils import timezone
logger = logging.getLogger('django.db.backends.schema')
def _is_relevant_relation(relation, altered_field):
"""
When altering the given field, must constraints on its model from the given
relation be temporarily dropped?
"""
field = relation.field
if field.many_to_many:
# M2M reverse field
return False
if altered_field.primary_key and field.to_fields == [None]:
# Foreign key constraint on the primary key, which is being altered.
return True
# Is the constraint targeting the field being altered?
return altered_field.name in field.to_fields
def _all_related_fields(model):
return model._meta._get_fields(forward=False, reverse=True, include_hidden=True)
def _related_non_m2m_objects(old_field, new_field):
# Filter out m2m objects from reverse relations.
# Return (old_relation, new_relation) tuples.
related_fields = zip(
(obj for obj in _all_related_fields(old_field.model) if _is_relevant_relation(obj, old_field)),
(obj for obj in _all_related_fields(new_field.model) if _is_relevant_relation(obj, new_field)),
)
for old_rel, new_rel in related_fields:
yield old_rel, new_rel
yield from _related_non_m2m_objects(
old_rel.remote_field,
new_rel.remote_field,
)
class BaseDatabaseSchemaEditor:
"""
This class and its subclasses are responsible for emitting schema-changing
statements to the databases - model creation/removal/alteration, field
renaming, index fiddling, and so on.
"""
# Overrideable SQL templates
sql_create_table = "CREATE TABLE %(table)s (%(definition)s)"
sql_rename_table = "ALTER TABLE %(old_table)s RENAME TO %(new_table)s"
sql_retablespace_table = "ALTER TABLE %(table)s SET TABLESPACE %(new_tablespace)s"
sql_delete_table = "DROP TABLE %(table)s CASCADE"
sql_create_column = "ALTER TABLE %(table)s ADD COLUMN %(column)s %(definition)s"
sql_alter_column = "ALTER TABLE %(table)s %(changes)s"
sql_alter_column_type = "ALTER COLUMN %(column)s TYPE %(type)s"
sql_alter_column_null = "ALTER COLUMN %(column)s DROP NOT NULL"
sql_alter_column_not_null = "ALTER COLUMN %(column)s SET NOT NULL"
sql_alter_column_default = "ALTER COLUMN %(column)s SET DEFAULT %(default)s"
sql_alter_column_no_default = "ALTER COLUMN %(column)s DROP DEFAULT"
sql_alter_column_no_default_null = sql_alter_column_no_default
sql_alter_column_collate = "ALTER COLUMN %(column)s TYPE %(type)s%(collation)s"
sql_delete_column = "ALTER TABLE %(table)s DROP COLUMN %(column)s CASCADE"
sql_rename_column = "ALTER TABLE %(table)s RENAME COLUMN %(old_column)s TO %(new_column)s"
sql_update_with_default = "UPDATE %(table)s SET %(column)s = %(default)s WHERE %(column)s IS NULL"
sql_unique_constraint = "UNIQUE (%(columns)s)%(deferrable)s"
sql_check_constraint = "CHECK (%(check)s)"
sql_delete_constraint = "ALTER TABLE %(table)s DROP CONSTRAINT %(name)s"
sql_constraint = "CONSTRAINT %(name)s %(constraint)s"
sql_create_check = "ALTER TABLE %(table)s ADD CONSTRAINT %(name)s CHECK (%(check)s)"
sql_delete_check = sql_delete_constraint
sql_create_unique = "ALTER TABLE %(table)s ADD CONSTRAINT %(name)s UNIQUE (%(columns)s)%(deferrable)s"
sql_delete_unique = sql_delete_constraint
sql_create_fk = (
"ALTER TABLE %(table)s ADD CONSTRAINT %(name)s FOREIGN KEY (%(column)s) "
"REFERENCES %(to_table)s (%(to_column)s)%(deferrable)s"
)
sql_create_inline_fk = None
sql_create_column_inline_fk = None
sql_delete_fk = sql_delete_constraint
sql_create_index = "CREATE INDEX %(name)s ON %(table)s (%(columns)s)%(include)s%(extra)s%(condition)s"
sql_create_unique_index = "CREATE UNIQUE INDEX %(name)s ON %(table)s (%(columns)s)%(include)s%(condition)s"
sql_delete_index = "DROP INDEX %(name)s"
sql_create_pk = "ALTER TABLE %(table)s ADD CONSTRAINT %(name)s PRIMARY KEY (%(columns)s)"
sql_delete_pk = sql_delete_constraint
sql_delete_procedure = 'DROP PROCEDURE %(procedure)s'
def __init__(self, connection, collect_sql=False, atomic=True):
self.connection = connection
self.collect_sql = collect_sql
if self.collect_sql:
self.collected_sql = []
self.atomic_migration = self.connection.features.can_rollback_ddl and atomic
# State-managing methods
def __enter__(self):
self.deferred_sql = []
if self.atomic_migration:
self.atomic = atomic(self.connection.alias)
self.atomic.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
if exc_type is None:
for sql in self.deferred_sql:
self.execute(sql)
if self.atomic_migration:
self.atomic.__exit__(exc_type, exc_value, traceback)
# Core utility functions
def execute(self, sql, params=()):
"""Execute the given SQL statement, with optional parameters."""
# Don't perform the transactional DDL check if SQL is being collected
# as it's not going to be executed anyway.
if not self.collect_sql and self.connection.in_atomic_block and not self.connection.features.can_rollback_ddl:
raise TransactionManagementError(
"Executing DDL statements while in a transaction on databases "
"that can't perform a rollback is prohibited."
)
# Account for non-string statement objects.
sql = str(sql)
# Log the command we're running, then run it
logger.debug("%s; (params %r)", sql, params, extra={'params': params, 'sql': sql})
if self.collect_sql:
ending = "" if sql.rstrip().endswith(";") else ";"
if params is not None:
self.collected_sql.append((sql % tuple(map(self.quote_value, params))) + ending)
else:
self.collected_sql.append(sql + ending)
else:
with self.connection.cursor() as cursor:
cursor.execute(sql, params)
def quote_name(self, name):
return self.connection.ops.quote_name(name)
def table_sql(self, model):
"""Take a model and return its table definition."""
# Add any unique_togethers (always deferred, as some fields might be
# created afterward, like geometry fields with some backends).
for field_names in model._meta.unique_together:
fields = [model._meta.get_field(field) for field in field_names]
self.deferred_sql.append(self._create_unique_sql(model, fields))
# Create column SQL, add FK deferreds if needed.
column_sqls = []
params = []
for field in model._meta.local_fields:
# SQL.
definition, extra_params = self.column_sql(model, field)
if definition is None:
continue
# Check constraints can go on the column SQL here.
db_params = field.db_parameters(connection=self.connection)
if db_params['check']:
definition += ' ' + self.sql_check_constraint % db_params
# Autoincrement SQL (for backends with inline variant).
col_type_suffix = field.db_type_suffix(connection=self.connection)
if col_type_suffix:
definition += ' %s' % col_type_suffix
params.extend(extra_params)
# FK.
if field.remote_field and field.db_constraint:
to_table = field.remote_field.model._meta.db_table
to_column = field.remote_field.model._meta.get_field(field.remote_field.field_name).column
if self.sql_create_inline_fk:
definition += ' ' + self.sql_create_inline_fk % {
'to_table': self.quote_name(to_table),
'to_column': self.quote_name(to_column),
}
elif self.connection.features.supports_foreign_keys:
self.deferred_sql.append(self._create_fk_sql(model, field, '_fk_%(to_table)s_%(to_column)s'))
# Add the SQL to our big list.
column_sqls.append('%s %s' % (
self.quote_name(field.column),
definition,
))
# Autoincrement SQL (for backends with post table definition
# variant).
if field.get_internal_type() in ('AutoField', 'BigAutoField', 'SmallAutoField'):
autoinc_sql = self.connection.ops.autoinc_sql(model._meta.db_table, field.column)
if autoinc_sql:
self.deferred_sql.extend(autoinc_sql)
constraints = [constraint.constraint_sql(model, self) for constraint in model._meta.constraints]
sql = self.sql_create_table % {
'table': self.quote_name(model._meta.db_table),
'definition': ', '.join(constraint for constraint in (*column_sqls, *constraints) if constraint),
}
if model._meta.db_tablespace:
tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
if tablespace_sql:
sql += ' ' + tablespace_sql
return sql, params
# Field <-> database mapping functions
def _iter_column_sql(self, column_db_type, params, model, field, include_default):
yield column_db_type
collation = getattr(field, 'db_collation', None)
if collation:
yield self._collate_sql(collation)
# Work out nullability.
null = field.null
# Include a default value, if requested.
include_default = (
include_default and
not self.skip_default(field) and
# Don't include a default value if it's a nullable field and the
# default cannot be dropped in the ALTER COLUMN statement (e.g.
# MySQL longtext and longblob).
not (null and self.skip_default_on_alter(field))
)
if include_default:
default_value = self.effective_default(field)
if default_value is not None:
column_default = 'DEFAULT ' + self._column_default_sql(field)
if self.connection.features.requires_literal_defaults:
# Some databases can't take defaults as a parameter (Oracle).
# If this is the case, the individual schema backend should
# implement prepare_default().
yield column_default % self.prepare_default(default_value)
else:
yield column_default
params.append(default_value)
# Oracle treats the empty string ('') as null, so coerce the null
# option whenever '' is a possible value.
if (field.empty_strings_allowed and not field.primary_key and
self.connection.features.interprets_empty_strings_as_nulls):
null = True
if not null:
yield 'NOT NULL'
elif not self.connection.features.implied_column_null:
yield 'NULL'
if field.primary_key:
yield 'PRIMARY KEY'
elif field.unique:
yield 'UNIQUE'
# Optionally add the tablespace if it's an implicitly indexed column.
tablespace = field.db_tablespace or model._meta.db_tablespace
if tablespace and self.connection.features.supports_tablespaces and field.unique:
yield self.connection.ops.tablespace_sql(tablespace, inline=True)
def column_sql(self, model, field, include_default=False):
"""
Return the column definition for a field. The field must already have
had set_attributes_from_name() called.
"""
# Get the column's type and use that as the basis of the SQL.
db_params = field.db_parameters(connection=self.connection)
column_db_type = db_params['type']
# Check for fields that aren't actually columns (e.g. M2M).
if column_db_type is None:
return None, None
params = []
return ' '.join(
# This appends to the params being returned.
self._iter_column_sql(column_db_type, params, model, field, include_default)
), params
def skip_default(self, field):
"""
Some backends don't accept default values for certain columns types
(i.e. MySQL longtext and longblob).
"""
return False
def skip_default_on_alter(self, field):
"""
Some backends don't accept default values for certain columns types
(i.e. MySQL longtext and longblob) in the ALTER COLUMN statement.
"""
return False
def prepare_default(self, value):
"""
Only used for backends which have requires_literal_defaults feature
"""
raise NotImplementedError(
'subclasses of BaseDatabaseSchemaEditor for backends which have '
'requires_literal_defaults must provide a prepare_default() method'
)
def _column_default_sql(self, field):
"""
Return the SQL to use in a DEFAULT clause. The resulting string should
contain a '%s' placeholder for a default value.
"""
return '%s'
@staticmethod
def _effective_default(field):
# This method allows testing its logic without a connection.
if field.has_default():
default = field.get_default()
elif not field.null and field.blank and field.empty_strings_allowed:
if field.get_internal_type() == "BinaryField":
default = b''
else:
default = ''
elif getattr(field, 'auto_now', False) or getattr(field, 'auto_now_add', False):
internal_type = field.get_internal_type()
if internal_type == 'DateTimeField':
default = timezone.now()
else:
default = datetime.now()
if internal_type == 'DateField':
default = default.date()
elif internal_type == 'TimeField':
default = default.time()
else:
default = None
return default
def effective_default(self, field):
"""Return a field's effective database default value."""
return field.get_db_prep_save(self._effective_default(field), self.connection)
def quote_value(self, value):
"""
Return a quoted version of the value so it's safe to use in an SQL
string. This is not safe against injection from user code; it is
intended only for use in making SQL scripts or preparing default values
for particularly tricky backends (defaults are not user-defined, though,
so this is safe).
"""
raise NotImplementedError()
# Actions
def create_model(self, model):
"""
Create a table and any accompanying indexes or unique constraints for
the given `model`.
"""
sql, params = self.table_sql(model)
# Prevent using [] as params, in the case a literal '%' is used in the definition
self.execute(sql, params or None)
# Add any field index and index_together's (deferred as SQLite _remake_table needs it)
self.deferred_sql.extend(self._model_indexes_sql(model))
# Make M2M tables
for field in model._meta.local_many_to_many:
if field.remote_field.through._meta.auto_created:
self.create_model(field.remote_field.through)
def delete_model(self, model):
"""Delete a model from the database."""
# Handle auto-created intermediary models
for field in model._meta.local_many_to_many:
if field.remote_field.through._meta.auto_created:
self.delete_model(field.remote_field.through)
# Delete the table
self.execute(self.sql_delete_table % {
"table": self.quote_name(model._meta.db_table),
})
# Remove all deferred statements referencing the deleted table.
for sql in list(self.deferred_sql):
if isinstance(sql, Statement) and sql.references_table(model._meta.db_table):
self.deferred_sql.remove(sql)
def add_index(self, model, index):
"""Add an index on a model."""
if (
index.contains_expressions and
not self.connection.features.supports_expression_indexes
):
return None
# Index.create_sql returns interpolated SQL which makes params=None a
# necessity to avoid escaping attempts on execution.
self.execute(index.create_sql(model, self), params=None)
def remove_index(self, model, index):
"""Remove an index from a model."""
if (
index.contains_expressions and
not self.connection.features.supports_expression_indexes
):
return None
self.execute(index.remove_sql(model, self))
def add_constraint(self, model, constraint):
"""Add a constraint to a model."""
sql = constraint.create_sql(model, self)
if sql:
# Constraint.create_sql returns interpolated SQL which makes
# params=None a necessity to avoid escaping attempts on execution.
self.execute(sql, params=None)
def remove_constraint(self, model, constraint):
"""Remove a constraint from a model."""
sql = constraint.remove_sql(model, self)
if sql:
self.execute(sql)
def alter_unique_together(self, model, old_unique_together, new_unique_together):
"""
Deal with a model changing its unique_together. The input
unique_togethers must be doubly-nested, not the single-nested
["foo", "bar"] format.
"""
olds = {tuple(fields) for fields in old_unique_together}
news = {tuple(fields) for fields in new_unique_together}
# Deleted uniques
for fields in olds.difference(news):
self._delete_composed_index(model, fields, {'unique': True}, self.sql_delete_unique)
# Created uniques
for field_names in news.difference(olds):
fields = [model._meta.get_field(field) for field in field_names]
self.execute(self._create_unique_sql(model, fields))
def alter_index_together(self, model, old_index_together, new_index_together):
"""
Deal with a model changing its index_together. The input
index_togethers must be doubly-nested, not the single-nested
["foo", "bar"] format.
"""
olds = {tuple(fields) for fields in old_index_together}
news = {tuple(fields) for fields in new_index_together}
# Deleted indexes
for fields in olds.difference(news):
self._delete_composed_index(
model,
fields,
{'index': True, 'unique': False},
self.sql_delete_index,
)
# Created indexes
for field_names in news.difference(olds):
fields = [model._meta.get_field(field) for field in field_names]
self.execute(self._create_index_sql(model, fields=fields, suffix='_idx'))
def _delete_composed_index(self, model, fields, constraint_kwargs, sql):
meta_constraint_names = {constraint.name for constraint in model._meta.constraints}
meta_index_names = {constraint.name for constraint in model._meta.indexes}
columns = [model._meta.get_field(field).column for field in fields]
constraint_names = self._constraint_names(
model, columns, exclude=meta_constraint_names | meta_index_names,
**constraint_kwargs
)
if len(constraint_names) != 1:
raise ValueError("Found wrong number (%s) of constraints for %s(%s)" % (
len(constraint_names),
model._meta.db_table,
", ".join(columns),
))
self.execute(self._delete_constraint_sql(sql, model, constraint_names[0]))
def alter_db_table(self, model, old_db_table, new_db_table):
"""Rename the table a model points to."""
if (old_db_table == new_db_table or
(self.connection.features.ignores_table_name_case and
old_db_table.lower() == new_db_table.lower())):
return
self.execute(self.sql_rename_table % {
"old_table": self.quote_name(old_db_table),
"new_table": self.quote_name(new_db_table),
})
# Rename all references to the old table name.
for sql in self.deferred_sql:
if isinstance(sql, Statement):
sql.rename_table_references(old_db_table, new_db_table)
def alter_db_tablespace(self, model, old_db_tablespace, new_db_tablespace):
"""Move a model's table between tablespaces."""
self.execute(self.sql_retablespace_table % {
"table": self.quote_name(model._meta.db_table),
"old_tablespace": self.quote_name(old_db_tablespace),
"new_tablespace": self.quote_name(new_db_tablespace),
})
def add_field(self, model, field):
"""
Create a field on a model. Usually involves adding a column, but may
involve adding a table instead (for M2M fields).
"""
# Special-case implicit M2M tables
if field.many_to_many and field.remote_field.through._meta.auto_created:
return self.create_model(field.remote_field.through)
# Get the column's definition
definition, params = self.column_sql(model, field, include_default=True)
# It might not actually have a column behind it
if definition is None:
return
# Check constraints can go on the column SQL here
db_params = field.db_parameters(connection=self.connection)
if db_params['check']:
definition += " " + self.sql_check_constraint % db_params
if field.remote_field and self.connection.features.supports_foreign_keys and field.db_constraint:
constraint_suffix = '_fk_%(to_table)s_%(to_column)s'
# Add FK constraint inline, if supported.
if self.sql_create_column_inline_fk:
to_table = field.remote_field.model._meta.db_table
to_column = field.remote_field.model._meta.get_field(field.remote_field.field_name).column
namespace, _ = split_identifier(model._meta.db_table)
definition += " " + self.sql_create_column_inline_fk % {
'name': self._fk_constraint_name(model, field, constraint_suffix),
'namespace': '%s.' % self.quote_name(namespace) if namespace else '',
'column': self.quote_name(field.column),
'to_table': self.quote_name(to_table),
'to_column': self.quote_name(to_column),
'deferrable': self.connection.ops.deferrable_sql()
}
# Otherwise, add FK constraints later.
else:
self.deferred_sql.append(self._create_fk_sql(model, field, constraint_suffix))
# Build the SQL and run it
sql = self.sql_create_column % {
"table": self.quote_name(model._meta.db_table),
"column": self.quote_name(field.column),
"definition": definition,
}
self.execute(sql, params)
# Drop the default if we need to
# (Django usually does not use in-database defaults)
if not self.skip_default_on_alter(field) and self.effective_default(field) is not None:
changes_sql, params = self._alter_column_default_sql(model, None, field, drop=True)
sql = self.sql_alter_column % {
"table": self.quote_name(model._meta.db_table),
"changes": changes_sql,
}
self.execute(sql, params)
# Add an index, if required
self.deferred_sql.extend(self._field_indexes_sql(model, field))
# Reset connection if required
if self.connection.features.connection_persists_old_columns:
self.connection.close()
def remove_field(self, model, field):
"""
Remove a field from a model. Usually involves deleting a column,
but for M2Ms may involve deleting a table.
"""
# Special-case implicit M2M tables
if field.many_to_many and field.remote_field.through._meta.auto_created:
return self.delete_model(field.remote_field.through)
# It might not actually have a column behind it
if field.db_parameters(connection=self.connection)['type'] is None:
return
# Drop any FK constraints, MySQL requires explicit deletion
if field.remote_field:
fk_names = self._constraint_names(model, [field.column], foreign_key=True)
for fk_name in fk_names:
self.execute(self._delete_fk_sql(model, fk_name))
# Delete the column
sql = self.sql_delete_column % {
"table": self.quote_name(model._meta.db_table),
"column": self.quote_name(field.column),
}
self.execute(sql)
# Reset connection if required
if self.connection.features.connection_persists_old_columns:
self.connection.close()
# Remove all deferred statements referencing the deleted column.
for sql in list(self.deferred_sql):
if isinstance(sql, Statement) and sql.references_column(model._meta.db_table, field.column):
self.deferred_sql.remove(sql)
def alter_field(self, model, old_field, new_field, strict=False):
"""
Allow a field's type, uniqueness, nullability, default, column,
constraints, etc. to be modified.
`old_field` is required to compute the necessary changes.
If `strict` is True, raise errors if the old column does not match
`old_field` precisely.
"""
if not self._field_should_be_altered(old_field, new_field):
return
# Ensure this field is even column-based
old_db_params = old_field.db_parameters(connection=self.connection)
old_type = old_db_params['type']
new_db_params = new_field.db_parameters(connection=self.connection)
new_type = new_db_params['type']
if ((old_type is None and old_field.remote_field is None) or
(new_type is None and new_field.remote_field is None)):
raise ValueError(
"Cannot alter field %s into %s - they do not properly define "
"db_type (are you using a badly-written custom field?)" %
(old_field, new_field),
)
elif old_type is None and new_type is None and (
old_field.remote_field.through and new_field.remote_field.through and
old_field.remote_field.through._meta.auto_created and
new_field.remote_field.through._meta.auto_created):
return self._alter_many_to_many(model, old_field, new_field, strict)
elif old_type is None and new_type is None and (
old_field.remote_field.through and new_field.remote_field.through and
not old_field.remote_field.through._meta.auto_created and
not new_field.remote_field.through._meta.auto_created):
# Both sides have through models; this is a no-op.
return
elif old_type is None or new_type is None:
raise ValueError(
"Cannot alter field %s into %s - they are not compatible types "
"(you cannot alter to or from M2M fields, or add or remove "
"through= on M2M fields)" % (old_field, new_field)
)
self._alter_field(model, old_field, new_field, old_type, new_type,
old_db_params, new_db_params, strict)
def _alter_field(self, model, old_field, new_field, old_type, new_type,
old_db_params, new_db_params, strict=False):
"""Perform a "physical" (non-ManyToMany) field update."""
# Drop any FK constraints, we'll remake them later
fks_dropped = set()
if (
self.connection.features.supports_foreign_keys and
old_field.remote_field and
old_field.db_constraint
):
fk_names = self._constraint_names(model, [old_field.column], foreign_key=True)
if strict and len(fk_names) != 1:
raise ValueError("Found wrong number (%s) of foreign key constraints for %s.%s" % (
len(fk_names),
model._meta.db_table,
old_field.column,
))
for fk_name in fk_names:
fks_dropped.add((old_field.column,))
self.execute(self._delete_fk_sql(model, fk_name))
# Has unique been removed?
if old_field.unique and (not new_field.unique or self._field_became_primary_key(old_field, new_field)):
# Find the unique constraint for this field
meta_constraint_names = {constraint.name for constraint in model._meta.constraints}
constraint_names = self._constraint_names(
model, [old_field.column], unique=True, primary_key=False,
exclude=meta_constraint_names,
)
if strict and len(constraint_names) != 1:
raise ValueError("Found wrong number (%s) of unique constraints for %s.%s" % (
len(constraint_names),
model._meta.db_table,
old_field.column,
))
for constraint_name in constraint_names:
self.execute(self._delete_unique_sql(model, constraint_name))
# Drop incoming FK constraints if the field is a primary key or unique,
# which might be a to_field target, and things are going to change.
drop_foreign_keys = (
self.connection.features.supports_foreign_keys and (
(old_field.primary_key and new_field.primary_key) or
(old_field.unique and new_field.unique)
) and old_type != new_type
)
if drop_foreign_keys:
# '_meta.related_field' also contains M2M reverse fields, these
# will be filtered out
for _old_rel, new_rel in _related_non_m2m_objects(old_field, new_field):
rel_fk_names = self._constraint_names(
new_rel.related_model, [new_rel.field.column], foreign_key=True
)
for fk_name in rel_fk_names:
self.execute(self._delete_fk_sql(new_rel.related_model, fk_name))
# Removed an index? (no strict check, as multiple indexes are possible)
# Remove indexes if db_index switched to False or a unique constraint
# will now be used in lieu of an index. The following lines from the
# truth table show all True cases; the rest are False:
#
# old_field.db_index | old_field.unique | new_field.db_index | new_field.unique
# ------------------------------------------------------------------------------
# True | False | False | False
# True | False | False | True
# True | False | True | True
if old_field.db_index and not old_field.unique and (not new_field.db_index or new_field.unique):
# Find the index for this field
meta_index_names = {index.name for index in model._meta.indexes}
# Retrieve only BTREE indexes since this is what's created with
# db_index=True.
index_names = self._constraint_names(
model, [old_field.column], index=True, type_=Index.suffix,
exclude=meta_index_names,
)
for index_name in index_names:
# The only way to check if an index was created with
# db_index=True or with Index(['field'], name='foo')
# is to look at its name (refs #28053).
self.execute(self._delete_index_sql(model, index_name))
# Change check constraints?
if old_db_params['check'] != new_db_params['check'] and old_db_params['check']:
meta_constraint_names = {constraint.name for constraint in model._meta.constraints}
constraint_names = self._constraint_names(
model, [old_field.column], check=True,
exclude=meta_constraint_names,
)
if strict and len(constraint_names) != 1:
raise ValueError("Found wrong number (%s) of check constraints for %s.%s" % (
len(constraint_names),
model._meta.db_table,
old_field.column,
))
for constraint_name in constraint_names:
self.execute(self._delete_check_sql(model, constraint_name))
# Have they renamed the column?
if old_field.column != new_field.column:
self.execute(self._rename_field_sql(model._meta.db_table, old_field, new_field, new_type))
# Rename all references to the renamed column.
for sql in self.deferred_sql:
if isinstance(sql, Statement):
sql.rename_column_references(model._meta.db_table, old_field.column, new_field.column)
# Next, start accumulating actions to do
actions = []
null_actions = []
post_actions = []
# Collation change?
old_collation = getattr(old_field, 'db_collation', None)
new_collation = getattr(new_field, 'db_collation', None)
if old_collation != new_collation:
# Collation change handles also a type change.
fragment = self._alter_column_collation_sql(model, new_field, new_type, new_collation)
actions.append(fragment)
# Type change?
elif old_type != new_type:
fragment, other_actions = self._alter_column_type_sql(model, old_field, new_field, new_type)
actions.append(fragment)
post_actions.extend(other_actions)
# When changing a column NULL constraint to NOT NULL with a given
# default value, we need to perform 4 steps:
# 1. Add a default for new incoming writes
# 2. Update existing NULL rows with new default
# 3. Replace NULL constraint with NOT NULL
# 4. Drop the default again.
# Default change?
needs_database_default = False
if old_field.null and not new_field.null:
old_default = self.effective_default(old_field)
new_default = self.effective_default(new_field)
if (
not self.skip_default_on_alter(new_field) and
old_default != new_default and
new_default is not None
):
needs_database_default = True
actions.append(self._alter_column_default_sql(model, old_field, new_field))
# Nullability change?
if old_field.null != new_field.null:
fragment = self._alter_column_null_sql(model, old_field, new_field)
if fragment:
null_actions.append(fragment)
# Only if we have a default and there is a change from NULL to NOT NULL
four_way_default_alteration = (
new_field.has_default() and
(old_field.null and not new_field.null)
)
if actions or null_actions:
if not four_way_default_alteration:
# If we don't have to do a 4-way default alteration we can
# directly run a (NOT) NULL alteration
actions = actions + null_actions
# Combine actions together if we can (e.g. postgres)
if self.connection.features.supports_combined_alters and actions:
sql, params = tuple(zip(*actions))
actions = [(", ".join(sql), sum(params, []))]
# Apply those actions
for sql, params in actions:
self.execute(
self.sql_alter_column % {
"table": self.quote_name(model._meta.db_table),
"changes": sql,
},
params,
)
if four_way_default_alteration:
# Update existing rows with default value
self.execute(
self.sql_update_with_default % {
"table": self.quote_name(model._meta.db_table),
"column": self.quote_name(new_field.column),
"default": "%s",
},
[new_default],
)
# Since we didn't run a NOT NULL change before we need to do it
# now
for sql, params in null_actions:
self.execute(
self.sql_alter_column % {
"table": self.quote_name(model._meta.db_table),
"changes": sql,
},
params,
)
if post_actions:
for sql, params in post_actions:
self.execute(sql, params)
# If primary_key changed to False, delete the primary key constraint.
if old_field.primary_key and not new_field.primary_key:
self._delete_primary_key(model, strict)
# Added a unique?
if self._unique_should_be_added(old_field, new_field):
self.execute(self._create_unique_sql(model, [new_field]))
# Added an index? Add an index if db_index switched to True or a unique
# constraint will no longer be used in lieu of an index. The following
# lines from the truth table show all True cases; the rest are False:
#
# old_field.db_index | old_field.unique | new_field.db_index | new_field.unique
# ------------------------------------------------------------------------------
# False | False | True | False
# False | True | True | False
# True | True | True | False
if (not old_field.db_index or old_field.unique) and new_field.db_index and not new_field.unique:
self.execute(self._create_index_sql(model, fields=[new_field]))
# Type alteration on primary key? Then we need to alter the column
# referring to us.
rels_to_update = []
if drop_foreign_keys:
rels_to_update.extend(_related_non_m2m_objects(old_field, new_field))
# Changed to become primary key?
if self._field_became_primary_key(old_field, new_field):
# Make the new one
self.execute(self._create_primary_key_sql(model, new_field))
# Update all referencing columns
rels_to_update.extend(_related_non_m2m_objects(old_field, new_field))
# Handle our type alters on the other end of rels from the PK stuff above
for old_rel, new_rel in rels_to_update:
rel_db_params = new_rel.field.db_parameters(connection=self.connection)
rel_type = rel_db_params['type']
fragment, other_actions = self._alter_column_type_sql(
new_rel.related_model, old_rel.field, new_rel.field, rel_type
)
self.execute(
self.sql_alter_column % {
"table": self.quote_name(new_rel.related_model._meta.db_table),
"changes": fragment[0],
},
fragment[1],
)
for sql, params in other_actions:
self.execute(sql, params)
# Does it have a foreign key?
if (self.connection.features.supports_foreign_keys and new_field.remote_field and
(fks_dropped or not old_field.remote_field or not old_field.db_constraint) and
new_field.db_constraint):
self.execute(self._create_fk_sql(model, new_field, "_fk_%(to_table)s_%(to_column)s"))
# Rebuild FKs that pointed to us if we previously had to drop them
if drop_foreign_keys:
for _, rel in rels_to_update:
if rel.field.db_constraint:
self.execute(self._create_fk_sql(rel.related_model, rel.field, "_fk"))
# Does it have check constraints we need to add?
if old_db_params['check'] != new_db_params['check'] and new_db_params['check']:
constraint_name = self._create_index_name(model._meta.db_table, [new_field.column], suffix='_check')
self.execute(self._create_check_sql(model, constraint_name, new_db_params['check']))
# Drop the default if we need to
# (Django usually does not use in-database defaults)
if needs_database_default:
changes_sql, params = self._alter_column_default_sql(model, old_field, new_field, drop=True)
sql = self.sql_alter_column % {
"table": self.quote_name(model._meta.db_table),
"changes": changes_sql,
}
self.execute(sql, params)
# Reset connection if required
if self.connection.features.connection_persists_old_columns:
self.connection.close()
def _alter_column_null_sql(self, model, old_field, new_field):
"""
Hook to specialize column null alteration.
Return a (sql, params) fragment to set a column to null or non-null
as required by new_field, or None if no changes are required.
"""
if (
self.connection.features.interprets_empty_strings_as_nulls and
new_field.empty_strings_allowed
):
# The field is nullable in the database anyway, leave it alone.
return
else:
new_db_params = new_field.db_parameters(connection=self.connection)
sql = self.sql_alter_column_null if new_field.null else self.sql_alter_column_not_null
return (
sql % {
'column': self.quote_name(new_field.column),
'type': new_db_params['type'],
},
[],
)
def _alter_column_default_sql(self, model, old_field, new_field, drop=False):
"""
Hook to specialize column default alteration.
Return a (sql, params) fragment to add or drop (depending on the drop
argument) a default to new_field's column.
"""
new_default = self.effective_default(new_field)
default = self._column_default_sql(new_field)
params = [new_default]
if drop:
params = []
elif self.connection.features.requires_literal_defaults:
# Some databases (Oracle) can't take defaults as a parameter
# If this is the case, the SchemaEditor for that database should
# implement prepare_default().
default = self.prepare_default(new_default)
params = []
new_db_params = new_field.db_parameters(connection=self.connection)
if drop:
if new_field.null:
sql = self.sql_alter_column_no_default_null
else:
sql = self.sql_alter_column_no_default
else:
sql = self.sql_alter_column_default
return (
sql % {
'column': self.quote_name(new_field.column),
'type': new_db_params['type'],
'default': default,
},
params,
)
def _alter_column_type_sql(self, model, old_field, new_field, new_type):
"""
Hook to specialize column type alteration for different backends,
for cases when a creation type is different to an alteration type
(e.g. SERIAL in PostgreSQL, PostGIS fields).
Return a two-tuple of: an SQL fragment of (sql, params) to insert into
an ALTER TABLE statement and a list of extra (sql, params) tuples to
run once the field is altered.
"""
return (
(
self.sql_alter_column_type % {
"column": self.quote_name(new_field.column),
"type": new_type,
},
[],
),
[],
)
def _alter_column_collation_sql(self, model, new_field, new_type, new_collation):
return (
self.sql_alter_column_collate % {
'column': self.quote_name(new_field.column),
'type': new_type,
'collation': ' ' + self._collate_sql(new_collation) if new_collation else '',
},
[],
)
def _alter_many_to_many(self, model, old_field, new_field, strict):
"""Alter M2Ms to repoint their to= endpoints."""
# Rename the through table
if old_field.remote_field.through._meta.db_table != new_field.remote_field.through._meta.db_table:
self.alter_db_table(old_field.remote_field.through, old_field.remote_field.through._meta.db_table,
new_field.remote_field.through._meta.db_table)
# Repoint the FK to the other side
self.alter_field(
new_field.remote_field.through,
# We need the field that points to the target model, so we can tell alter_field to change it -
# this is m2m_reverse_field_name() (as opposed to m2m_field_name, which points to our model)
old_field.remote_field.through._meta.get_field(old_field.m2m_reverse_field_name()),
new_field.remote_field.through._meta.get_field(new_field.m2m_reverse_field_name()),
)
self.alter_field(
new_field.remote_field.through,
# for self-referential models we need to alter field from the other end too
old_field.remote_field.through._meta.get_field(old_field.m2m_field_name()),
new_field.remote_field.through._meta.get_field(new_field.m2m_field_name()),
)
def _create_index_name(self, table_name, column_names, suffix=""):
"""
Generate a unique name for an index/unique constraint.
The name is divided into 3 parts: the table name, the column names,
and a unique digest and suffix.
"""
_, table_name = split_identifier(table_name)
hash_suffix_part = '%s%s' % (names_digest(table_name, *column_names, length=8), suffix)
max_length = self.connection.ops.max_name_length() or 200
# If everything fits into max_length, use that name.
index_name = '%s_%s_%s' % (table_name, '_'.join(column_names), hash_suffix_part)
if len(index_name) <= max_length:
return index_name
# Shorten a long suffix.
if len(hash_suffix_part) > max_length / 3:
hash_suffix_part = hash_suffix_part[:max_length // 3]
other_length = (max_length - len(hash_suffix_part)) // 2 - 1
index_name = '%s_%s_%s' % (
table_name[:other_length],
'_'.join(column_names)[:other_length],
hash_suffix_part,
)
# Prepend D if needed to prevent the name from starting with an
# underscore or a number (not permitted on Oracle).
if index_name[0] == "_" or index_name[0].isdigit():
index_name = "D%s" % index_name[:-1]
return index_name
def _get_index_tablespace_sql(self, model, fields, db_tablespace=None):
if db_tablespace is None:
if len(fields) == 1 and fields[0].db_tablespace:
db_tablespace = fields[0].db_tablespace
elif model._meta.db_tablespace:
db_tablespace = model._meta.db_tablespace
if db_tablespace is not None:
return ' ' + self.connection.ops.tablespace_sql(db_tablespace)
return ''
def _index_condition_sql(self, condition):
if condition:
return ' WHERE ' + condition
return ''
def _index_include_sql(self, model, columns):
if not columns or not self.connection.features.supports_covering_indexes:
return ''
return Statement(
' INCLUDE (%(columns)s)',
columns=Columns(model._meta.db_table, columns, self.quote_name),
)
def _create_index_sql(self, model, *, fields=None, name=None, suffix='', using='',
db_tablespace=None, col_suffixes=(), sql=None, opclasses=(),
condition=None, include=None, expressions=None):
"""
Return the SQL statement to create the index for one or several fields
or expressions. `sql` can be specified if the syntax differs from the
standard (GIS indexes, ...).
"""
fields = fields or []
expressions = expressions or []
compiler = Query(model, alias_cols=False).get_compiler(
connection=self.connection,
)
tablespace_sql = self._get_index_tablespace_sql(model, fields, db_tablespace=db_tablespace)
columns = [field.column for field in fields]
sql_create_index = sql or self.sql_create_index
table = model._meta.db_table
def create_index_name(*args, **kwargs):
nonlocal name
if name is None:
name = self._create_index_name(*args, **kwargs)
return self.quote_name(name)
return Statement(
sql_create_index,
table=Table(table, self.quote_name),
name=IndexName(table, columns, suffix, create_index_name),
using=using,
columns=(
self._index_columns(table, columns, col_suffixes, opclasses)
if columns
else Expressions(table, expressions, compiler, self.quote_value)
),
extra=tablespace_sql,
condition=self._index_condition_sql(condition),
include=self._index_include_sql(model, include),
)
def _delete_index_sql(self, model, name, sql=None):
return Statement(
sql or self.sql_delete_index,
table=Table(model._meta.db_table, self.quote_name),
name=self.quote_name(name),
)
def _index_columns(self, table, columns, col_suffixes, opclasses):
return Columns(table, columns, self.quote_name, col_suffixes=col_suffixes)
def _model_indexes_sql(self, model):
"""
Return a list of all index SQL statements (field indexes,
index_together, Meta.indexes) for the specified model.
"""
if not model._meta.managed or model._meta.proxy or model._meta.swapped:
return []
output = []
for field in model._meta.local_fields:
output.extend(self._field_indexes_sql(model, field))
for field_names in model._meta.index_together:
fields = [model._meta.get_field(field) for field in field_names]
output.append(self._create_index_sql(model, fields=fields, suffix='_idx'))
for index in model._meta.indexes:
if (
not index.contains_expressions or
self.connection.features.supports_expression_indexes
):
output.append(index.create_sql(model, self))
return output
def _field_indexes_sql(self, model, field):
"""
Return a list of all index SQL statements for the specified field.
"""
output = []
if self._field_should_be_indexed(model, field):
output.append(self._create_index_sql(model, fields=[field]))
return output
def _field_should_be_altered(self, old_field, new_field):
_, old_path, old_args, old_kwargs = old_field.deconstruct()
_, new_path, new_args, new_kwargs = new_field.deconstruct()
# Don't alter when:
# - changing only a field name
# - changing an attribute that doesn't affect the schema
# - adding only a db_column and the column name is not changed
non_database_attrs = [
'blank',
'db_column',
'editable',
'error_messages',
'help_text',
'limit_choices_to',
# Database-level options are not supported, see #21961.
'on_delete',
'related_name',
'related_query_name',
'validators',
'verbose_name',
]
for attr in non_database_attrs:
old_kwargs.pop(attr, None)
new_kwargs.pop(attr, None)
return (
self.quote_name(old_field.column) != self.quote_name(new_field.column) or
(old_path, old_args, old_kwargs) != (new_path, new_args, new_kwargs)
)
def _field_should_be_indexed(self, model, field):
return field.db_index and not field.unique
def _field_became_primary_key(self, old_field, new_field):
return not old_field.primary_key and new_field.primary_key
def _unique_should_be_added(self, old_field, new_field):
return (not old_field.unique and new_field.unique) or (
old_field.primary_key and not new_field.primary_key and new_field.unique
)
def _rename_field_sql(self, table, old_field, new_field, new_type):
return self.sql_rename_column % {
"table": self.quote_name(table),
"old_column": self.quote_name(old_field.column),
"new_column": self.quote_name(new_field.column),
"type": new_type,
}
def _create_fk_sql(self, model, field, suffix):
table = Table(model._meta.db_table, self.quote_name)
name = self._fk_constraint_name(model, field, suffix)
column = Columns(model._meta.db_table, [field.column], self.quote_name)
to_table = Table(field.target_field.model._meta.db_table, self.quote_name)
to_column = Columns(field.target_field.model._meta.db_table, [field.target_field.column], self.quote_name)
deferrable = self.connection.ops.deferrable_sql()
return Statement(
self.sql_create_fk,
table=table,
name=name,
column=column,
to_table=to_table,
to_column=to_column,
deferrable=deferrable,
)
def _fk_constraint_name(self, model, field, suffix):
def create_fk_name(*args, **kwargs):
return self.quote_name(self._create_index_name(*args, **kwargs))
return ForeignKeyName(
model._meta.db_table,
[field.column],
split_identifier(field.target_field.model._meta.db_table)[1],
[field.target_field.column],
suffix,
create_fk_name,
)
def _delete_fk_sql(self, model, name):
return self._delete_constraint_sql(self.sql_delete_fk, model, name)
def _deferrable_constraint_sql(self, deferrable):
if deferrable is None:
return ''
if deferrable == Deferrable.DEFERRED:
return ' DEFERRABLE INITIALLY DEFERRED'
if deferrable == Deferrable.IMMEDIATE:
return ' DEFERRABLE INITIALLY IMMEDIATE'
def _unique_sql(
self, model, fields, name, condition=None, deferrable=None,
include=None, opclasses=None, expressions=None,
):
if (
deferrable and
not self.connection.features.supports_deferrable_unique_constraints
):
return None
if condition or include or opclasses or expressions:
# Databases support conditional, covering, and functional unique
# constraints via a unique index.
sql = self._create_unique_sql(
model,
fields,
name=name,
condition=condition,
include=include,
opclasses=opclasses,
expressions=expressions,
)
if sql:
self.deferred_sql.append(sql)
return None
constraint = self.sql_unique_constraint % {
'columns': ', '.join([self.quote_name(field.column) for field in fields]),
'deferrable': self._deferrable_constraint_sql(deferrable),
}
return self.sql_constraint % {
'name': self.quote_name(name),
'constraint': constraint,
}
def _create_unique_sql(
self, model, fields, name=None, condition=None, deferrable=None,
include=None, opclasses=None, expressions=None,
):
if (
(
deferrable and
not self.connection.features.supports_deferrable_unique_constraints
) or
(condition and not self.connection.features.supports_partial_indexes) or
(include and not self.connection.features.supports_covering_indexes) or
(expressions and not self.connection.features.supports_expression_indexes)
):
return None
def create_unique_name(*args, **kwargs):
return self.quote_name(self._create_index_name(*args, **kwargs))
compiler = Query(model, alias_cols=False).get_compiler(connection=self.connection)
table = model._meta.db_table
columns = [field.column for field in fields]
if name is None:
name = IndexName(table, columns, '_uniq', create_unique_name)
else:
name = self.quote_name(name)
if condition or include or opclasses or expressions:
sql = self.sql_create_unique_index
else:
sql = self.sql_create_unique
if columns:
columns = self._index_columns(table, columns, col_suffixes=(), opclasses=opclasses)
else:
columns = Expressions(table, expressions, compiler, self.quote_value)
return Statement(
sql,
table=Table(table, self.quote_name),
name=name,
columns=columns,
condition=self._index_condition_sql(condition),
deferrable=self._deferrable_constraint_sql(deferrable),
include=self._index_include_sql(model, include),
)
def _delete_unique_sql(
self, model, name, condition=None, deferrable=None, include=None,
opclasses=None, expressions=None,
):
if (
(
deferrable and
not self.connection.features.supports_deferrable_unique_constraints
) or
(condition and not self.connection.features.supports_partial_indexes) or
(include and not self.connection.features.supports_covering_indexes) or
(expressions and not self.connection.features.supports_expression_indexes)
):
return None
if condition or include or opclasses or expressions:
sql = self.sql_delete_index
else:
sql = self.sql_delete_unique
return self._delete_constraint_sql(sql, model, name)
def _check_sql(self, name, check):
return self.sql_constraint % {
'name': self.quote_name(name),
'constraint': self.sql_check_constraint % {'check': check},
}
def _create_check_sql(self, model, name, check):
return Statement(
self.sql_create_check,
table=Table(model._meta.db_table, self.quote_name),
name=self.quote_name(name),
check=check,
)
def _delete_check_sql(self, model, name):
return self._delete_constraint_sql(self.sql_delete_check, model, name)
def _delete_constraint_sql(self, template, model, name):
return Statement(
template,
table=Table(model._meta.db_table, self.quote_name),
name=self.quote_name(name),
)
def _constraint_names(self, model, column_names=None, unique=None,
primary_key=None, index=None, foreign_key=None,
check=None, type_=None, exclude=None):
"""Return all constraint names matching the columns and conditions."""
if column_names is not None:
column_names = [
self.connection.introspection.identifier_converter(name)
for name in column_names
]
with self.connection.cursor() as cursor:
constraints = self.connection.introspection.get_constraints(cursor, model._meta.db_table)
result = []
for name, infodict in constraints.items():
if column_names is None or column_names == infodict['columns']:
if unique is not None and infodict['unique'] != unique:
continue
if primary_key is not None and infodict['primary_key'] != primary_key:
continue
if index is not None and infodict['index'] != index:
continue
if check is not None and infodict['check'] != check:
continue
if foreign_key is not None and not infodict['foreign_key']:
continue
if type_ is not None and infodict['type'] != type_:
continue
if not exclude or name not in exclude:
result.append(name)
return result
def _delete_primary_key(self, model, strict=False):
constraint_names = self._constraint_names(model, primary_key=True)
if strict and len(constraint_names) != 1:
raise ValueError('Found wrong number (%s) of PK constraints for %s' % (
len(constraint_names),
model._meta.db_table,
))
for constraint_name in constraint_names:
self.execute(self._delete_primary_key_sql(model, constraint_name))
def _create_primary_key_sql(self, model, field):
return Statement(
self.sql_create_pk,
table=Table(model._meta.db_table, self.quote_name),
name=self.quote_name(
self._create_index_name(model._meta.db_table, [field.column], suffix="_pk")
),
columns=Columns(model._meta.db_table, [field.column], self.quote_name),
)
def _delete_primary_key_sql(self, model, name):
return self._delete_constraint_sql(self.sql_delete_pk, model, name)
def _collate_sql(self, collation):
return 'COLLATE ' + self.quote_name(collation)
def remove_procedure(self, procedure_name, param_types=()):
sql = self.sql_delete_procedure % {
'procedure': self.quote_name(procedure_name),
'param_types': ','.join(param_types),
}
self.execute(sql)
|
5a80455d1508160610fc445f1785f0875993f1579d2bc64d153d6c94266660c4 | """
Base classes for writing management commands (named commands which can
be executed through ``django-admin`` or ``manage.py``).
"""
import argparse
import os
import sys
import warnings
from argparse import ArgumentParser, HelpFormatter
from io import TextIOBase
import django
from django.core import checks
from django.core.exceptions import ImproperlyConfigured
from django.core.management.color import color_style, no_style
from django.db import DEFAULT_DB_ALIAS, connections
from django.utils.deprecation import RemovedInDjango41Warning
ALL_CHECKS = '__all__'
class CommandError(Exception):
"""
Exception class indicating a problem while executing a management
command.
If this exception is raised during the execution of a management
command, it will be caught and turned into a nicely-printed error
message to the appropriate output stream (i.e., stderr); as a
result, raising this exception (with a sensible description of the
error) is the preferred way to indicate that something has gone
wrong in the execution of a command.
"""
def __init__(self, *args, returncode=1, **kwargs):
self.returncode = returncode
super().__init__(*args, **kwargs)
class SystemCheckError(CommandError):
"""
The system check framework detected unrecoverable errors.
"""
pass
class CommandParser(ArgumentParser):
"""
Customized ArgumentParser class to improve some error messages and prevent
SystemExit in several occasions, as SystemExit is unacceptable when a
command is called programmatically.
"""
def __init__(self, *, missing_args_message=None, called_from_command_line=None, **kwargs):
self.missing_args_message = missing_args_message
self.called_from_command_line = called_from_command_line
super().__init__(**kwargs)
def parse_args(self, args=None, namespace=None):
# Catch missing argument for a better error message
if (self.missing_args_message and
not (args or any(not arg.startswith('-') for arg in args))):
self.error(self.missing_args_message)
return super().parse_args(args, namespace)
def error(self, message):
if self.called_from_command_line:
super().error(message)
else:
raise CommandError("Error: %s" % message)
def handle_default_options(options):
"""
Include any default options that all commands should accept here
so that ManagementUtility can handle them before searching for
user commands.
"""
if options.settings:
os.environ['DJANGO_SETTINGS_MODULE'] = options.settings
if options.pythonpath:
sys.path.insert(0, options.pythonpath)
def no_translations(handle_func):
"""Decorator that forces a command to run with translations deactivated."""
def wrapped(*args, **kwargs):
from django.utils import translation
saved_locale = translation.get_language()
translation.deactivate_all()
try:
res = handle_func(*args, **kwargs)
finally:
if saved_locale is not None:
translation.activate(saved_locale)
return res
return wrapped
class DjangoHelpFormatter(HelpFormatter):
"""
Customized formatter so that command-specific arguments appear in the
--help output before arguments common to all commands.
"""
show_last = {
'--version', '--verbosity', '--traceback', '--settings', '--pythonpath',
'--no-color', '--force-color', '--skip-checks',
}
def _reordered_actions(self, actions):
return sorted(
actions,
key=lambda a: set(a.option_strings) & self.show_last != set()
)
def add_usage(self, usage, actions, *args, **kwargs):
super().add_usage(usage, self._reordered_actions(actions), *args, **kwargs)
def add_arguments(self, actions):
super().add_arguments(self._reordered_actions(actions))
class OutputWrapper(TextIOBase):
"""
Wrapper around stdout/stderr
"""
@property
def style_func(self):
return self._style_func
@style_func.setter
def style_func(self, style_func):
if style_func and self.isatty():
self._style_func = style_func
else:
self._style_func = lambda x: x
def __init__(self, out, ending='\n'):
self._out = out
self.style_func = None
self.ending = ending
def __getattr__(self, name):
return getattr(self._out, name)
def flush(self):
if hasattr(self._out, 'flush'):
self._out.flush()
def isatty(self):
return hasattr(self._out, 'isatty') and self._out.isatty()
def write(self, msg='', style_func=None, ending=None):
ending = self.ending if ending is None else ending
if ending and not msg.endswith(ending):
msg += ending
style_func = style_func or self.style_func
self._out.write(style_func(msg))
class BaseCommand:
"""
The base class from which all management commands ultimately
derive.
Use this class if you want access to all of the mechanisms which
parse the command-line arguments and work out what code to call in
response; if you don't need to change any of that behavior,
consider using one of the subclasses defined in this file.
If you are interested in overriding/customizing various aspects of
the command-parsing and -execution behavior, the normal flow works
as follows:
1. ``django-admin`` or ``manage.py`` loads the command class
and calls its ``run_from_argv()`` method.
2. The ``run_from_argv()`` method calls ``create_parser()`` to get
an ``ArgumentParser`` for the arguments, parses them, performs
any environment changes requested by options like
``pythonpath``, and then calls the ``execute()`` method,
passing the parsed arguments.
3. The ``execute()`` method attempts to carry out the command by
calling the ``handle()`` method with the parsed arguments; any
output produced by ``handle()`` will be printed to standard
output and, if the command is intended to produce a block of
SQL statements, will be wrapped in ``BEGIN`` and ``COMMIT``.
4. If ``handle()`` or ``execute()`` raised any exception (e.g.
``CommandError``), ``run_from_argv()`` will instead print an error
message to ``stderr``.
Thus, the ``handle()`` method is typically the starting point for
subclasses; many built-in commands and command types either place
all of their logic in ``handle()``, or perform some additional
parsing work in ``handle()`` and then delegate from it to more
specialized methods as needed.
Several attributes affect behavior at various steps along the way:
``help``
A short description of the command, which will be printed in
help messages.
``output_transaction``
A boolean indicating whether the command outputs SQL
statements; if ``True``, the output will automatically be
wrapped with ``BEGIN;`` and ``COMMIT;``. Default value is
``False``.
``requires_migrations_checks``
A boolean; if ``True``, the command prints a warning if the set of
migrations on disk don't match the migrations in the database.
``requires_system_checks``
A list or tuple of tags, e.g. [Tags.staticfiles, Tags.models]. System
checks registered in the chosen tags will be checked for errors prior
to executing the command. The value '__all__' can be used to specify
that all system checks should be performed. Default value is '__all__'.
To validate an individual application's models
rather than all applications' models, call
``self.check(app_configs)`` from ``handle()``, where ``app_configs``
is the list of application's configuration provided by the
app registry.
``stealth_options``
A tuple of any options the command uses which aren't defined by the
argument parser.
"""
# Metadata about this command.
help = ''
# Configuration shortcuts that alter various logic.
_called_from_command_line = False
output_transaction = False # Whether to wrap the output in a "BEGIN; COMMIT;"
requires_migrations_checks = False
requires_system_checks = '__all__'
# Arguments, common to all commands, which aren't defined by the argument
# parser.
base_stealth_options = ('stderr', 'stdout')
# Command-specific options not defined by the argument parser.
stealth_options = ()
suppressed_base_arguments = set()
def __init__(self, stdout=None, stderr=None, no_color=False, force_color=False):
self.stdout = OutputWrapper(stdout or sys.stdout)
self.stderr = OutputWrapper(stderr or sys.stderr)
if no_color and force_color:
raise CommandError("'no_color' and 'force_color' can't be used together.")
if no_color:
self.style = no_style()
else:
self.style = color_style(force_color)
self.stderr.style_func = self.style.ERROR
if self.requires_system_checks in [False, True]:
warnings.warn(
"Using a boolean value for requires_system_checks is "
"deprecated. Use '__all__' instead of True, and [] (an empty "
"list) instead of False.",
RemovedInDjango41Warning,
)
self.requires_system_checks = ALL_CHECKS if self.requires_system_checks else []
if (
not isinstance(self.requires_system_checks, (list, tuple)) and
self.requires_system_checks != ALL_CHECKS
):
raise TypeError('requires_system_checks must be a list or tuple.')
def get_version(self):
"""
Return the Django version, which should be correct for all built-in
Django commands. User-supplied commands can override this method to
return their own version.
"""
return django.get_version()
def create_parser(self, prog_name, subcommand, **kwargs):
"""
Create and return the ``ArgumentParser`` which will be used to
parse the arguments to this command.
"""
parser = CommandParser(
prog='%s %s' % (os.path.basename(prog_name), subcommand),
description=self.help or None,
formatter_class=DjangoHelpFormatter,
missing_args_message=getattr(self, 'missing_args_message', None),
called_from_command_line=getattr(self, '_called_from_command_line', None),
**kwargs
)
self.add_base_argument(
parser, '--version', action='version', version=self.get_version(),
help="Show program's version number and exit.",
)
self.add_base_argument(
parser, '-v', '--verbosity', default=1,
type=int, choices=[0, 1, 2, 3],
help='Verbosity level; 0=minimal output, 1=normal output, 2=verbose output, 3=very verbose output',
)
self.add_base_argument(
parser, '--settings',
help=(
'The Python path to a settings module, e.g. '
'"myproject.settings.main". If this isn\'t provided, the '
'DJANGO_SETTINGS_MODULE environment variable will be used.'
),
)
self.add_base_argument(
parser, '--pythonpath',
help='A directory to add to the Python path, e.g. "/home/djangoprojects/myproject".',
)
self.add_base_argument(
parser, '--traceback', action='store_true',
help='Raise on CommandError exceptions.',
)
self.add_base_argument(
parser, '--no-color', action='store_true',
help="Don't colorize the command output.",
)
self.add_base_argument(
parser, '--force-color', action='store_true',
help='Force colorization of the command output.',
)
if self.requires_system_checks:
parser.add_argument(
'--skip-checks', action='store_true',
help='Skip system checks.',
)
self.add_arguments(parser)
return parser
def add_arguments(self, parser):
"""
Entry point for subclassed commands to add custom arguments.
"""
pass
def add_base_argument(self, parser, *args, **kwargs):
"""
Call the parser's add_argument() method, suppressing the help text
according to BaseCommand.suppressed_base_arguments.
"""
for arg in args:
if arg in self.suppressed_base_arguments:
kwargs['help'] = argparse.SUPPRESS
break
parser.add_argument(*args, **kwargs)
def print_help(self, prog_name, subcommand):
"""
Print the help message for this command, derived from
``self.usage()``.
"""
parser = self.create_parser(prog_name, subcommand)
parser.print_help()
def run_from_argv(self, argv):
"""
Set up any environment changes requested (e.g., Python path
and Django settings), then run this command. If the
command raises a ``CommandError``, intercept it and print it sensibly
to stderr. If the ``--traceback`` option is present or the raised
``Exception`` is not ``CommandError``, raise it.
"""
self._called_from_command_line = True
parser = self.create_parser(argv[0], argv[1])
options = parser.parse_args(argv[2:])
cmd_options = vars(options)
# Move positional args out of options to mimic legacy optparse
args = cmd_options.pop('args', ())
handle_default_options(options)
try:
self.execute(*args, **cmd_options)
except CommandError as e:
if options.traceback:
raise
# SystemCheckError takes care of its own formatting.
if isinstance(e, SystemCheckError):
self.stderr.write(str(e), lambda x: x)
else:
self.stderr.write('%s: %s' % (e.__class__.__name__, e))
sys.exit(e.returncode)
finally:
try:
connections.close_all()
except ImproperlyConfigured:
# Ignore if connections aren't setup at this point (e.g. no
# configured settings).
pass
def execute(self, *args, **options):
"""
Try to execute this command, performing system checks if needed (as
controlled by the ``requires_system_checks`` attribute, except if
force-skipped).
"""
if options['force_color'] and options['no_color']:
raise CommandError("The --no-color and --force-color options can't be used together.")
if options['force_color']:
self.style = color_style(force_color=True)
elif options['no_color']:
self.style = no_style()
self.stderr.style_func = None
if options.get('stdout'):
self.stdout = OutputWrapper(options['stdout'])
if options.get('stderr'):
self.stderr = OutputWrapper(options['stderr'])
if self.requires_system_checks and not options['skip_checks']:
if self.requires_system_checks == ALL_CHECKS:
self.check()
else:
self.check(tags=self.requires_system_checks)
if self.requires_migrations_checks:
self.check_migrations()
output = self.handle(*args, **options)
if output:
if self.output_transaction:
connection = connections[options.get('database', DEFAULT_DB_ALIAS)]
output = '%s\n%s\n%s' % (
self.style.SQL_KEYWORD(connection.ops.start_transaction_sql()),
output,
self.style.SQL_KEYWORD(connection.ops.end_transaction_sql()),
)
self.stdout.write(output)
return output
def check(self, app_configs=None, tags=None, display_num_errors=False,
include_deployment_checks=False, fail_level=checks.ERROR,
databases=None):
"""
Use the system check framework to validate entire Django project.
Raise CommandError for any serious message (error or critical errors).
If there are only light messages (like warnings), print them to stderr
and don't raise an exception.
"""
all_issues = checks.run_checks(
app_configs=app_configs,
tags=tags,
include_deployment_checks=include_deployment_checks,
databases=databases,
)
header, body, footer = "", "", ""
visible_issue_count = 0 # excludes silenced warnings
if all_issues:
debugs = [e for e in all_issues if e.level < checks.INFO and not e.is_silenced()]
infos = [e for e in all_issues if checks.INFO <= e.level < checks.WARNING and not e.is_silenced()]
warnings = [e for e in all_issues if checks.WARNING <= e.level < checks.ERROR and not e.is_silenced()]
errors = [e for e in all_issues if checks.ERROR <= e.level < checks.CRITICAL and not e.is_silenced()]
criticals = [e for e in all_issues if checks.CRITICAL <= e.level and not e.is_silenced()]
sorted_issues = [
(criticals, 'CRITICALS'),
(errors, 'ERRORS'),
(warnings, 'WARNINGS'),
(infos, 'INFOS'),
(debugs, 'DEBUGS'),
]
for issues, group_name in sorted_issues:
if issues:
visible_issue_count += len(issues)
formatted = (
self.style.ERROR(str(e))
if e.is_serious()
else self.style.WARNING(str(e))
for e in issues)
formatted = "\n".join(sorted(formatted))
body += '\n%s:\n%s\n' % (group_name, formatted)
if visible_issue_count:
header = "System check identified some issues:\n"
if display_num_errors:
if visible_issue_count:
footer += '\n'
footer += "System check identified %s (%s silenced)." % (
"no issues" if visible_issue_count == 0 else
"1 issue" if visible_issue_count == 1 else
"%s issues" % visible_issue_count,
len(all_issues) - visible_issue_count,
)
if any(e.is_serious(fail_level) and not e.is_silenced() for e in all_issues):
msg = self.style.ERROR("SystemCheckError: %s" % header) + body + footer
raise SystemCheckError(msg)
else:
msg = header + body + footer
if msg:
if visible_issue_count:
self.stderr.write(msg, lambda x: x)
else:
self.stdout.write(msg)
def check_migrations(self):
"""
Print a warning if the set of migrations on disk don't match the
migrations in the database.
"""
from django.db.migrations.executor import MigrationExecutor
try:
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
except ImproperlyConfigured:
# No databases are configured (or the dummy one)
return
plan = executor.migration_plan(executor.loader.graph.leaf_nodes())
if plan:
apps_waiting_migration = sorted({migration.app_label for migration, backwards in plan})
self.stdout.write(
self.style.NOTICE(
"\nYou have %(unapplied_migration_count)s unapplied migration(s). "
"Your project may not work properly until you apply the "
"migrations for app(s): %(apps_waiting_migration)s." % {
"unapplied_migration_count": len(plan),
"apps_waiting_migration": ", ".join(apps_waiting_migration),
}
)
)
self.stdout.write(self.style.NOTICE("Run 'python manage.py migrate' to apply them."))
def handle(self, *args, **options):
"""
The actual logic of the command. Subclasses must implement
this method.
"""
raise NotImplementedError('subclasses of BaseCommand must provide a handle() method')
class AppCommand(BaseCommand):
"""
A management command which takes one or more installed application labels
as arguments, and does something with each of them.
Rather than implementing ``handle()``, subclasses must implement
``handle_app_config()``, which will be called once for each application.
"""
missing_args_message = "Enter at least one application label."
def add_arguments(self, parser):
parser.add_argument('args', metavar='app_label', nargs='+', help='One or more application label.')
def handle(self, *app_labels, **options):
from django.apps import apps
try:
app_configs = [apps.get_app_config(app_label) for app_label in app_labels]
except (LookupError, ImportError) as e:
raise CommandError("%s. Are you sure your INSTALLED_APPS setting is correct?" % e)
output = []
for app_config in app_configs:
app_output = self.handle_app_config(app_config, **options)
if app_output:
output.append(app_output)
return '\n'.join(output)
def handle_app_config(self, app_config, **options):
"""
Perform the command's actions for app_config, an AppConfig instance
corresponding to an application label given on the command line.
"""
raise NotImplementedError(
"Subclasses of AppCommand must provide"
"a handle_app_config() method.")
class LabelCommand(BaseCommand):
"""
A management command which takes one or more arbitrary arguments
(labels) on the command line, and does something with each of
them.
Rather than implementing ``handle()``, subclasses must implement
``handle_label()``, which will be called once for each label.
If the arguments should be names of installed applications, use
``AppCommand`` instead.
"""
label = 'label'
missing_args_message = "Enter at least one %s." % label
def add_arguments(self, parser):
parser.add_argument('args', metavar=self.label, nargs='+')
def handle(self, *labels, **options):
output = []
for label in labels:
label_output = self.handle_label(label, **options)
if label_output:
output.append(label_output)
return '\n'.join(output)
def handle_label(self, label, **options):
"""
Perform the command's actions for ``label``, which will be the
string as given on the command line.
"""
raise NotImplementedError('subclasses of LabelCommand must provide a handle_label() method')
|
11e3abc3c3273a1eccb2501ad85c5d6580b165c6d2b03324b7706dd621ff982e | "Memcached cache backend"
import pickle
import re
import time
import warnings
from django.core.cache.backends.base import (
DEFAULT_TIMEOUT, BaseCache, InvalidCacheKey, memcache_key_warnings,
)
from django.utils.deprecation import RemovedInDjango41Warning
from django.utils.functional import cached_property
class BaseMemcachedCache(BaseCache):
def __init__(self, server, params, library, value_not_found_exception):
super().__init__(params)
if isinstance(server, str):
self._servers = re.split('[;,]', server)
else:
self._servers = server
# Exception type raised by the underlying client library for a
# nonexistent key.
self.LibraryValueNotFoundException = value_not_found_exception
self._lib = library
self._class = library.Client
self._options = params.get('OPTIONS') or {}
@property
def client_servers(self):
return self._servers
@cached_property
def _cache(self):
"""
Implement transparent thread-safe access to a memcached client.
"""
return self._class(self.client_servers, **self._options)
def get_backend_timeout(self, timeout=DEFAULT_TIMEOUT):
"""
Memcached deals with long (> 30 days) timeouts in a special
way. Call this function to obtain a safe value for your timeout.
"""
if timeout == DEFAULT_TIMEOUT:
timeout = self.default_timeout
if timeout is None:
# Using 0 in memcache sets a non-expiring timeout.
return 0
elif int(timeout) == 0:
# Other cache backends treat 0 as set-and-expire. To achieve this
# in memcache backends, a negative timeout must be passed.
timeout = -1
if timeout > 2592000: # 60*60*24*30, 30 days
# See https://github.com/memcached/memcached/wiki/Programming#expiration
# "Expiration times can be set from 0, meaning "never expire", to
# 30 days. Any time higher than 30 days is interpreted as a Unix
# timestamp date. If you want to expire an object on January 1st of
# next year, this is how you do that."
#
# This means that we have to switch to absolute timestamps.
timeout += int(time.time())
return int(timeout)
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.add(key, value, self.get_backend_timeout(timeout))
def get(self, key, default=None, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.get(key, default)
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
if not self._cache.set(key, value, self.get_backend_timeout(timeout)):
# make sure the key doesn't keep its old value in case of failure to set (memcached's 1MB limit)
self._cache.delete(key)
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
return bool(self._cache.touch(key, self.get_backend_timeout(timeout)))
def delete(self, key, version=None):
key = self.make_and_validate_key(key, version=version)
return bool(self._cache.delete(key))
def get_many(self, keys, version=None):
key_map = {self.make_and_validate_key(key, version=version): key for key in keys}
ret = self._cache.get_multi(key_map.keys())
return {key_map[k]: v for k, v in ret.items()}
def close(self, **kwargs):
# Many clients don't clean up connections properly.
self._cache.disconnect_all()
def incr(self, key, delta=1, version=None):
key = self.make_and_validate_key(key, version=version)
try:
# Memcached doesn't support negative delta.
if delta < 0:
val = self._cache.decr(key, -delta)
else:
val = self._cache.incr(key, delta)
# Normalize an exception raised by the underlying client library to
# ValueError in the event of a nonexistent key when calling
# incr()/decr().
except self.LibraryValueNotFoundException:
val = None
if val is None:
raise ValueError("Key '%s' not found" % key)
return val
def set_many(self, data, timeout=DEFAULT_TIMEOUT, version=None):
safe_data = {}
original_keys = {}
for key, value in data.items():
safe_key = self.make_and_validate_key(key, version=version)
safe_data[safe_key] = value
original_keys[safe_key] = key
failed_keys = self._cache.set_multi(safe_data, self.get_backend_timeout(timeout))
return [original_keys[k] for k in failed_keys]
def delete_many(self, keys, version=None):
keys = [self.make_and_validate_key(key, version=version) for key in keys]
self._cache.delete_multi(keys)
def clear(self):
self._cache.flush_all()
def validate_key(self, key):
for warning in memcache_key_warnings(key):
raise InvalidCacheKey(warning)
class MemcachedCache(BaseMemcachedCache):
"An implementation of a cache binding using python-memcached"
# python-memcached doesn't support default values in get().
# https://github.com/linsomniac/python-memcached/issues/159
_missing_key = None
def __init__(self, server, params):
warnings.warn(
'MemcachedCache is deprecated in favor of PyMemcacheCache and '
'PyLibMCCache.',
RemovedInDjango41Warning, stacklevel=2,
)
# python-memcached ≥ 1.45 returns None for a nonexistent key in
# incr/decr(), python-memcached < 1.45 raises ValueError.
import memcache
super().__init__(server, params, library=memcache, value_not_found_exception=ValueError)
self._options = {'pickleProtocol': pickle.HIGHEST_PROTOCOL, **self._options}
def get(self, key, default=None, version=None):
key = self.make_and_validate_key(key, version=version)
val = self._cache.get(key)
# python-memcached doesn't support default values in get().
# https://github.com/linsomniac/python-memcached/issues/159
# Remove this method if that issue is fixed.
if val is None:
return default
return val
def delete(self, key, version=None):
# python-memcached's delete() returns True when key doesn't exist.
# https://github.com/linsomniac/python-memcached/issues/170
# Call _deletetouch() without the NOT_FOUND in expected results.
key = self.make_and_validate_key(key, version=version)
return bool(self._cache._deletetouch([b'DELETED'], 'delete', key))
class PyLibMCCache(BaseMemcachedCache):
"An implementation of a cache binding using pylibmc"
def __init__(self, server, params):
import pylibmc
super().__init__(server, params, library=pylibmc, value_not_found_exception=pylibmc.NotFound)
@property
def client_servers(self):
output = []
for server in self._servers:
output.append(server[5:] if server.startswith('unix:') else server)
return output
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
if timeout == 0:
return self._cache.delete(key)
return self._cache.touch(key, self.get_backend_timeout(timeout))
def close(self, **kwargs):
# libmemcached manages its own connections. Don't call disconnect_all()
# as it resets the failover state and creates unnecessary reconnects.
pass
class PyMemcacheCache(BaseMemcachedCache):
"""An implementation of a cache binding using pymemcache."""
def __init__(self, server, params):
import pymemcache.serde
super().__init__(server, params, library=pymemcache, value_not_found_exception=KeyError)
self._class = self._lib.HashClient
self._options = {
'allow_unicode_keys': True,
'default_noreply': False,
'serde': pymemcache.serde.pickle_serde,
**self._options,
}
|
55cdce35ab01ebde871cc5275fa19259cd16b86cbb1cf9ad7989c72008095ae6 | import base64
import binascii
import functools
import hashlib
import importlib
import math
import warnings
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.core.signals import setting_changed
from django.dispatch import receiver
from django.utils.crypto import (
RANDOM_STRING_CHARS, constant_time_compare, get_random_string, pbkdf2,
)
from django.utils.module_loading import import_string
from django.utils.translation import gettext_noop as _
UNUSABLE_PASSWORD_PREFIX = '!' # This will never be a valid encoded hash
UNUSABLE_PASSWORD_SUFFIX_LENGTH = 40 # number of random chars to add after UNUSABLE_PASSWORD_PREFIX
def is_password_usable(encoded):
"""
Return True if this password wasn't generated by
User.set_unusable_password(), i.e. make_password(None).
"""
return encoded is None or not encoded.startswith(UNUSABLE_PASSWORD_PREFIX)
def check_password(password, encoded, setter=None, preferred='default'):
"""
Return a boolean of whether the raw password matches the three
part encoded digest.
If setter is specified, it'll be called when you need to
regenerate the password.
"""
if password is None or not is_password_usable(encoded):
return False
preferred = get_hasher(preferred)
try:
hasher = identify_hasher(encoded)
except ValueError:
# encoded is gibberish or uses a hasher that's no longer installed.
return False
hasher_changed = hasher.algorithm != preferred.algorithm
must_update = hasher_changed or preferred.must_update(encoded)
is_correct = hasher.verify(password, encoded)
# If the hasher didn't change (we don't protect against enumeration if it
# does) and the password should get updated, try to close the timing gap
# between the work factor of the current encoded password and the default
# work factor.
if not is_correct and not hasher_changed and must_update:
hasher.harden_runtime(password, encoded)
if setter and is_correct and must_update:
setter(password)
return is_correct
def make_password(password, salt=None, hasher='default'):
"""
Turn a plain-text password into a hash for database storage
Same as encode() but generate a new random salt. If password is None then
return a concatenation of UNUSABLE_PASSWORD_PREFIX and a random string,
which disallows logins. Additional random string reduces chances of gaining
access to staff or superuser accounts. See ticket #20079 for more info.
"""
if password is None:
return UNUSABLE_PASSWORD_PREFIX + get_random_string(UNUSABLE_PASSWORD_SUFFIX_LENGTH)
if not isinstance(password, (bytes, str)):
raise TypeError(
'Password must be a string or bytes, got %s.'
% type(password).__qualname__
)
hasher = get_hasher(hasher)
salt = salt or hasher.salt()
return hasher.encode(password, salt)
@functools.lru_cache()
def get_hashers():
hashers = []
for hasher_path in settings.PASSWORD_HASHERS:
hasher_cls = import_string(hasher_path)
hasher = hasher_cls()
if not getattr(hasher, 'algorithm'):
raise ImproperlyConfigured("hasher doesn't specify an "
"algorithm name: %s" % hasher_path)
hashers.append(hasher)
return hashers
@functools.lru_cache()
def get_hashers_by_algorithm():
return {hasher.algorithm: hasher for hasher in get_hashers()}
@receiver(setting_changed)
def reset_hashers(**kwargs):
if kwargs['setting'] == 'PASSWORD_HASHERS':
get_hashers.cache_clear()
get_hashers_by_algorithm.cache_clear()
def get_hasher(algorithm='default'):
"""
Return an instance of a loaded password hasher.
If algorithm is 'default', return the default hasher. Lazily import hashers
specified in the project's settings file if needed.
"""
if hasattr(algorithm, 'algorithm'):
return algorithm
elif algorithm == 'default':
return get_hashers()[0]
else:
hashers = get_hashers_by_algorithm()
try:
return hashers[algorithm]
except KeyError:
raise ValueError("Unknown password hashing algorithm '%s'. "
"Did you specify it in the PASSWORD_HASHERS "
"setting?" % algorithm)
def identify_hasher(encoded):
"""
Return an instance of a loaded password hasher.
Identify hasher algorithm by examining encoded hash, and call
get_hasher() to return hasher. Raise ValueError if
algorithm cannot be identified, or if hasher is not loaded.
"""
# Ancient versions of Django created plain MD5 passwords and accepted
# MD5 passwords with an empty salt.
if ((len(encoded) == 32 and '$' not in encoded) or
(len(encoded) == 37 and encoded.startswith('md5$$'))):
algorithm = 'unsalted_md5'
# Ancient versions of Django accepted SHA1 passwords with an empty salt.
elif len(encoded) == 46 and encoded.startswith('sha1$$'):
algorithm = 'unsalted_sha1'
else:
algorithm = encoded.split('$', 1)[0]
return get_hasher(algorithm)
def mask_hash(hash, show=6, char="*"):
"""
Return the given hash, with only the first ``show`` number shown. The
rest are masked with ``char`` for security reasons.
"""
masked = hash[:show]
masked += char * len(hash[show:])
return masked
def must_update_salt(salt, expected_entropy):
# Each character in the salt provides log_2(len(alphabet)) bits of entropy.
return len(salt) * math.log2(len(RANDOM_STRING_CHARS)) < expected_entropy
class BasePasswordHasher:
"""
Abstract base class for password hashers
When creating your own hasher, you need to override algorithm,
verify(), encode() and safe_summary().
PasswordHasher objects are immutable.
"""
algorithm = None
library = None
salt_entropy = 128
def _load_library(self):
if self.library is not None:
if isinstance(self.library, (tuple, list)):
name, mod_path = self.library
else:
mod_path = self.library
try:
module = importlib.import_module(mod_path)
except ImportError as e:
raise ValueError("Couldn't load %r algorithm library: %s" %
(self.__class__.__name__, e))
return module
raise ValueError("Hasher %r doesn't specify a library attribute" %
self.__class__.__name__)
def salt(self):
"""
Generate a cryptographically secure nonce salt in ASCII with an entropy
of at least `salt_entropy` bits.
"""
# Each character in the salt provides
# log_2(len(alphabet)) bits of entropy.
char_count = math.ceil(self.salt_entropy / math.log2(len(RANDOM_STRING_CHARS)))
return get_random_string(char_count, allowed_chars=RANDOM_STRING_CHARS)
def verify(self, password, encoded):
"""Check if the given password is correct."""
raise NotImplementedError('subclasses of BasePasswordHasher must provide a verify() method')
def _check_encode_args(self, password, salt):
if password is None:
raise TypeError('password must be provided.')
if not salt or '$' in salt:
raise ValueError('salt must be provided and cannot contain $.')
def encode(self, password, salt):
"""
Create an encoded database value.
The result is normally formatted as "algorithm$salt$hash" and
must be fewer than 128 characters.
"""
raise NotImplementedError('subclasses of BasePasswordHasher must provide an encode() method')
def decode(self, encoded):
"""
Return a decoded database value.
The result is a dictionary and should contain `algorithm`, `hash`, and
`salt`. Extra keys can be algorithm specific like `iterations` or
`work_factor`.
"""
raise NotImplementedError(
'subclasses of BasePasswordHasher must provide a decode() method.'
)
def safe_summary(self, encoded):
"""
Return a summary of safe values.
The result is a dictionary and will be used where the password field
must be displayed to construct a safe representation of the password.
"""
raise NotImplementedError('subclasses of BasePasswordHasher must provide a safe_summary() method')
def must_update(self, encoded):
return False
def harden_runtime(self, password, encoded):
"""
Bridge the runtime gap between the work factor supplied in `encoded`
and the work factor suggested by this hasher.
Taking PBKDF2 as an example, if `encoded` contains 20000 iterations and
`self.iterations` is 30000, this method should run password through
another 10000 iterations of PBKDF2. Similar approaches should exist
for any hasher that has a work factor. If not, this method should be
defined as a no-op to silence the warning.
"""
warnings.warn('subclasses of BasePasswordHasher should provide a harden_runtime() method')
class PBKDF2PasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the PBKDF2 algorithm (recommended)
Configured to use PBKDF2 + HMAC + SHA256.
The result is a 64 byte binary string. Iterations may be changed
safely but you must rename the algorithm if you change SHA256.
"""
algorithm = "pbkdf2_sha256"
iterations = 320000
digest = hashlib.sha256
def encode(self, password, salt, iterations=None):
self._check_encode_args(password, salt)
iterations = iterations or self.iterations
hash = pbkdf2(password, salt, iterations, digest=self.digest)
hash = base64.b64encode(hash).decode('ascii').strip()
return "%s$%d$%s$%s" % (self.algorithm, iterations, salt, hash)
def decode(self, encoded):
algorithm, iterations, salt, hash = encoded.split('$', 3)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'hash': hash,
'iterations': int(iterations),
'salt': salt,
}
def verify(self, password, encoded):
decoded = self.decode(encoded)
encoded_2 = self.encode(password, decoded['salt'], decoded['iterations'])
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('iterations'): decoded['iterations'],
_('salt'): mask_hash(decoded['salt']),
_('hash'): mask_hash(decoded['hash']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
update_salt = must_update_salt(decoded['salt'], self.salt_entropy)
return (decoded['iterations'] != self.iterations) or update_salt
def harden_runtime(self, password, encoded):
decoded = self.decode(encoded)
extra_iterations = self.iterations - decoded['iterations']
if extra_iterations > 0:
self.encode(password, decoded['salt'], extra_iterations)
class PBKDF2SHA1PasswordHasher(PBKDF2PasswordHasher):
"""
Alternate PBKDF2 hasher which uses SHA1, the default PRF
recommended by PKCS #5. This is compatible with other
implementations of PBKDF2, such as openssl's
PKCS5_PBKDF2_HMAC_SHA1().
"""
algorithm = "pbkdf2_sha1"
digest = hashlib.sha1
class Argon2PasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the argon2 algorithm.
This is the winner of the Password Hashing Competition 2013-2015
(https://password-hashing.net). It requires the argon2-cffi library which
depends on native C code and might cause portability issues.
"""
algorithm = 'argon2'
library = 'argon2'
time_cost = 2
memory_cost = 102400
parallelism = 8
def encode(self, password, salt):
argon2 = self._load_library()
params = self.params()
data = argon2.low_level.hash_secret(
password.encode(),
salt.encode(),
time_cost=params.time_cost,
memory_cost=params.memory_cost,
parallelism=params.parallelism,
hash_len=params.hash_len,
type=params.type,
)
return self.algorithm + data.decode('ascii')
def decode(self, encoded):
argon2 = self._load_library()
algorithm, rest = encoded.split('$', 1)
assert algorithm == self.algorithm
params = argon2.extract_parameters('$' + rest)
variety, *_, b64salt, hash = rest.split('$')
# Add padding.
b64salt += '=' * (-len(b64salt) % 4)
salt = base64.b64decode(b64salt).decode('latin1')
return {
'algorithm': algorithm,
'hash': hash,
'memory_cost': params.memory_cost,
'parallelism': params.parallelism,
'salt': salt,
'time_cost': params.time_cost,
'variety': variety,
'version': params.version,
'params': params,
}
def verify(self, password, encoded):
argon2 = self._load_library()
algorithm, rest = encoded.split('$', 1)
assert algorithm == self.algorithm
try:
return argon2.PasswordHasher().verify('$' + rest, password)
except argon2.exceptions.VerificationError:
return False
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('variety'): decoded['variety'],
_('version'): decoded['version'],
_('memory cost'): decoded['memory_cost'],
_('time cost'): decoded['time_cost'],
_('parallelism'): decoded['parallelism'],
_('salt'): mask_hash(decoded['salt']),
_('hash'): mask_hash(decoded['hash']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
current_params = decoded['params']
new_params = self.params()
# Set salt_len to the salt_len of the current parameters because salt
# is explicitly passed to argon2.
new_params.salt_len = current_params.salt_len
update_salt = must_update_salt(decoded['salt'], self.salt_entropy)
return (current_params != new_params) or update_salt
def harden_runtime(self, password, encoded):
# The runtime for Argon2 is too complicated to implement a sensible
# hardening algorithm.
pass
def params(self):
argon2 = self._load_library()
# salt_len is a noop, because we provide our own salt.
return argon2.Parameters(
type=argon2.low_level.Type.ID,
version=argon2.low_level.ARGON2_VERSION,
salt_len=argon2.DEFAULT_RANDOM_SALT_LENGTH,
hash_len=argon2.DEFAULT_HASH_LENGTH,
time_cost=self.time_cost,
memory_cost=self.memory_cost,
parallelism=self.parallelism,
)
class BCryptSHA256PasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the bcrypt algorithm (recommended)
This is considered by many to be the most secure algorithm but you
must first install the bcrypt library. Please be warned that
this library depends on native C code and might cause portability
issues.
"""
algorithm = "bcrypt_sha256"
digest = hashlib.sha256
library = ("bcrypt", "bcrypt")
rounds = 12
def salt(self):
bcrypt = self._load_library()
return bcrypt.gensalt(self.rounds)
def encode(self, password, salt):
bcrypt = self._load_library()
password = password.encode()
# Hash the password prior to using bcrypt to prevent password
# truncation as described in #20138.
if self.digest is not None:
# Use binascii.hexlify() because a hex encoded bytestring is str.
password = binascii.hexlify(self.digest(password).digest())
data = bcrypt.hashpw(password, salt)
return "%s$%s" % (self.algorithm, data.decode('ascii'))
def decode(self, encoded):
algorithm, empty, algostr, work_factor, data = encoded.split('$', 4)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'algostr': algostr,
'checksum': data[22:],
'salt': data[:22],
'work_factor': int(work_factor),
}
def verify(self, password, encoded):
algorithm, data = encoded.split('$', 1)
assert algorithm == self.algorithm
encoded_2 = self.encode(password, data.encode('ascii'))
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('work factor'): decoded['work_factor'],
_('salt'): mask_hash(decoded['salt']),
_('checksum'): mask_hash(decoded['checksum']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
return decoded['work_factor'] != self.rounds
def harden_runtime(self, password, encoded):
_, data = encoded.split('$', 1)
salt = data[:29] # Length of the salt in bcrypt.
rounds = data.split('$')[2]
# work factor is logarithmic, adding one doubles the load.
diff = 2**(self.rounds - int(rounds)) - 1
while diff > 0:
self.encode(password, salt.encode('ascii'))
diff -= 1
class BCryptPasswordHasher(BCryptSHA256PasswordHasher):
"""
Secure password hashing using the bcrypt algorithm
This is considered by many to be the most secure algorithm but you
must first install the bcrypt library. Please be warned that
this library depends on native C code and might cause portability
issues.
This hasher does not first hash the password which means it is subject to
bcrypt's 72 bytes password truncation. Most use cases should prefer the
BCryptSHA256PasswordHasher.
"""
algorithm = "bcrypt"
digest = None
class ScryptPasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the Scrypt algorithm.
"""
algorithm = 'scrypt'
block_size = 8
maxmem = 0
parallelism = 1
work_factor = 2 ** 14
def encode(self, password, salt, n=None, r=None, p=None):
self._check_encode_args(password, salt)
n = n or self.work_factor
r = r or self.block_size
p = p or self.parallelism
hash_ = hashlib.scrypt(
password.encode(),
salt=salt.encode(),
n=n,
r=r,
p=p,
maxmem=self.maxmem,
dklen=64,
)
hash_ = base64.b64encode(hash_).decode('ascii').strip()
return '%s$%d$%s$%d$%d$%s' % (self.algorithm, n, salt, r, p, hash_)
def decode(self, encoded):
algorithm, work_factor, salt, block_size, parallelism, hash_ = encoded.split('$', 6)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'work_factor': int(work_factor),
'salt': salt,
'block_size': int(block_size),
'parallelism': int(parallelism),
'hash': hash_,
}
def verify(self, password, encoded):
decoded = self.decode(encoded)
encoded_2 = self.encode(
password,
decoded['salt'],
decoded['work_factor'],
decoded['block_size'],
decoded['parallelism'],
)
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('work factor'): decoded['work_factor'],
_('block size'): decoded['block_size'],
_('parallelism'): decoded['parallelism'],
_('salt'): mask_hash(decoded['salt']),
_('hash'): mask_hash(decoded['hash']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
return (
decoded['work_factor'] != self.work_factor or
decoded['block_size'] != self.block_size or
decoded['parallelism'] != self.parallelism
)
def harden_runtime(self, password, encoded):
# The runtime for Scrypt is too complicated to implement a sensible
# hardening algorithm.
pass
class SHA1PasswordHasher(BasePasswordHasher):
"""
The SHA1 password hashing algorithm (not recommended)
"""
algorithm = "sha1"
def encode(self, password, salt):
self._check_encode_args(password, salt)
hash = hashlib.sha1((salt + password).encode()).hexdigest()
return "%s$%s$%s" % (self.algorithm, salt, hash)
def decode(self, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'hash': hash,
'salt': salt,
}
def verify(self, password, encoded):
decoded = self.decode(encoded)
encoded_2 = self.encode(password, decoded['salt'])
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('salt'): mask_hash(decoded['salt'], show=2),
_('hash'): mask_hash(decoded['hash']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
return must_update_salt(decoded['salt'], self.salt_entropy)
def harden_runtime(self, password, encoded):
pass
class MD5PasswordHasher(BasePasswordHasher):
"""
The Salted MD5 password hashing algorithm (not recommended)
"""
algorithm = "md5"
def encode(self, password, salt):
self._check_encode_args(password, salt)
hash = hashlib.md5((salt + password).encode()).hexdigest()
return "%s$%s$%s" % (self.algorithm, salt, hash)
def decode(self, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'hash': hash,
'salt': salt,
}
def verify(self, password, encoded):
decoded = self.decode(encoded)
encoded_2 = self.encode(password, decoded['salt'])
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('salt'): mask_hash(decoded['salt'], show=2),
_('hash'): mask_hash(decoded['hash']),
}
def must_update(self, encoded):
decoded = self.decode(encoded)
return must_update_salt(decoded['salt'], self.salt_entropy)
def harden_runtime(self, password, encoded):
pass
class UnsaltedSHA1PasswordHasher(BasePasswordHasher):
"""
Very insecure algorithm that you should *never* use; store SHA1 hashes
with an empty salt.
This class is implemented because Django used to accept such password
hashes. Some older Django installs still have these values lingering
around so we need to handle and upgrade them properly.
"""
algorithm = "unsalted_sha1"
def salt(self):
return ''
def encode(self, password, salt):
if salt != '':
raise ValueError('salt must be empty.')
hash = hashlib.sha1(password.encode()).hexdigest()
return 'sha1$$%s' % hash
def decode(self, encoded):
assert encoded.startswith('sha1$$')
return {
'algorithm': self.algorithm,
'hash': encoded[6:],
'salt': None,
}
def verify(self, password, encoded):
encoded_2 = self.encode(password, '')
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('hash'): mask_hash(decoded['hash']),
}
def harden_runtime(self, password, encoded):
pass
class UnsaltedMD5PasswordHasher(BasePasswordHasher):
"""
Incredibly insecure algorithm that you should *never* use; stores unsalted
MD5 hashes without the algorithm prefix, also accepts MD5 hashes with an
empty salt.
This class is implemented because Django used to store passwords this way
and to accept such password hashes. Some older Django installs still have
these values lingering around so we need to handle and upgrade them
properly.
"""
algorithm = "unsalted_md5"
def salt(self):
return ''
def encode(self, password, salt):
if salt != '':
raise ValueError('salt must be empty.')
return hashlib.md5(password.encode()).hexdigest()
def decode(self, encoded):
return {
'algorithm': self.algorithm,
'hash': encoded,
'salt': None,
}
def verify(self, password, encoded):
if len(encoded) == 37 and encoded.startswith('md5$$'):
encoded = encoded[5:]
encoded_2 = self.encode(password, '')
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('hash'): mask_hash(decoded['hash'], show=3),
}
def harden_runtime(self, password, encoded):
pass
class CryptPasswordHasher(BasePasswordHasher):
"""
Password hashing using UNIX crypt (not recommended)
The crypt module is not supported on all platforms.
"""
algorithm = "crypt"
library = "crypt"
def salt(self):
return get_random_string(2)
def encode(self, password, salt):
crypt = self._load_library()
if len(salt) != 2:
raise ValueError('salt must be of length 2.')
hash = crypt.crypt(password, salt)
if hash is None: # A platform like OpenBSD with a dummy crypt module.
raise TypeError('hash must be provided.')
# we don't need to store the salt, but Django used to do this
return '%s$%s$%s' % (self.algorithm, '', hash)
def decode(self, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
'algorithm': algorithm,
'hash': hash,
'salt': salt,
}
def verify(self, password, encoded):
crypt = self._load_library()
decoded = self.decode(encoded)
data = crypt.crypt(password, decoded['hash'])
return constant_time_compare(decoded['hash'], data)
def safe_summary(self, encoded):
decoded = self.decode(encoded)
return {
_('algorithm'): decoded['algorithm'],
_('salt'): decoded['salt'],
_('hash'): mask_hash(decoded['hash'], show=3),
}
def harden_runtime(self, password, encoded):
pass
|
47aafbc1e6f2e7e8150a6c8ca93314edbd551d4ef8f753611b1006e8dda759f4 | import json
from django import forms
from django.contrib.admin.utils import (
display_for_field, flatten_fieldsets, help_text_for_field, label_for_field,
lookup_field, quote,
)
from django.core.exceptions import ObjectDoesNotExist
from django.db.models.fields.related import (
ForeignObjectRel, ManyToManyRel, OneToOneField,
)
from django.forms.utils import flatatt
from django.template.defaultfilters import capfirst, linebreaksbr
from django.urls import NoReverseMatch, reverse
from django.utils.html import conditional_escape, format_html
from django.utils.safestring import mark_safe
from django.utils.translation import gettext, gettext_lazy as _
ACTION_CHECKBOX_NAME = '_selected_action'
class ActionForm(forms.Form):
action = forms.ChoiceField(label=_('Action:'))
select_across = forms.BooleanField(
label='',
required=False,
initial=0,
widget=forms.HiddenInput({'class': 'select-across'}),
)
checkbox = forms.CheckboxInput({'class': 'action-select'}, lambda value: False)
class AdminForm:
def __init__(self, form, fieldsets, prepopulated_fields, readonly_fields=None, model_admin=None):
self.form, self.fieldsets = form, fieldsets
self.prepopulated_fields = [{
'field': form[field_name],
'dependencies': [form[f] for f in dependencies]
} for field_name, dependencies in prepopulated_fields.items()]
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __repr__(self):
return (
f'<{self.__class__.__qualname__}: '
f'form={self.form.__class__.__qualname__} '
f'fieldsets={self.fieldsets!r}>'
)
def __iter__(self):
for name, options in self.fieldsets:
yield Fieldset(
self.form, name,
readonly_fields=self.readonly_fields,
model_admin=self.model_admin,
**options
)
@property
def errors(self):
return self.form.errors
@property
def non_field_errors(self):
return self.form.non_field_errors
@property
def media(self):
media = self.form.media
for fs in self:
media = media + fs.media
return media
class Fieldset:
def __init__(self, form, name=None, readonly_fields=(), fields=(), classes=(),
description=None, model_admin=None):
self.form = form
self.name, self.fields = name, fields
self.classes = ' '.join(classes)
self.description = description
self.model_admin = model_admin
self.readonly_fields = readonly_fields
@property
def media(self):
if 'collapse' in self.classes:
return forms.Media(js=['admin/js/collapse.js'])
return forms.Media()
def __iter__(self):
for field in self.fields:
yield Fieldline(self.form, field, self.readonly_fields, model_admin=self.model_admin)
class Fieldline:
def __init__(self, form, field, readonly_fields=None, model_admin=None):
self.form = form # A django.forms.Form instance
if not hasattr(field, "__iter__") or isinstance(field, str):
self.fields = [field]
else:
self.fields = field
self.has_visible_field = not all(
field in self.form.fields and self.form.fields[field].widget.is_hidden
for field in self.fields
)
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __iter__(self):
for i, field in enumerate(self.fields):
if field in self.readonly_fields:
yield AdminReadonlyField(self.form, field, is_first=(i == 0), model_admin=self.model_admin)
else:
yield AdminField(self.form, field, is_first=(i == 0))
def errors(self):
return mark_safe(
'\n'.join(
self.form[f].errors.as_ul() for f in self.fields if f not in self.readonly_fields
).strip('\n')
)
class AdminField:
def __init__(self, form, field, is_first):
self.field = form[field] # A django.forms.BoundField instance
self.is_first = is_first # Whether this field is first on the line
self.is_checkbox = isinstance(self.field.field.widget, forms.CheckboxInput)
self.is_readonly = False
def label_tag(self):
classes = []
contents = conditional_escape(self.field.label)
if self.is_checkbox:
classes.append('vCheckboxLabel')
if self.field.field.required:
classes.append('required')
if not self.is_first:
classes.append('inline')
attrs = {'class': ' '.join(classes)} if classes else {}
# checkboxes should not have a label suffix as the checkbox appears
# to the left of the label.
return self.field.label_tag(
contents=mark_safe(contents), attrs=attrs,
label_suffix='' if self.is_checkbox else None,
)
def errors(self):
return mark_safe(self.field.errors.as_ul())
class AdminReadonlyField:
def __init__(self, form, field, is_first, model_admin=None):
# Make self.field look a little bit like a field. This means that
# {{ field.name }} must be a useful class name to identify the field.
# For convenience, store other field-related data here too.
if callable(field):
class_name = field.__name__ if field.__name__ != '<lambda>' else ''
else:
class_name = field
if form._meta.labels and class_name in form._meta.labels:
label = form._meta.labels[class_name]
else:
label = label_for_field(field, form._meta.model, model_admin, form=form)
if form._meta.help_texts and class_name in form._meta.help_texts:
help_text = form._meta.help_texts[class_name]
else:
help_text = help_text_for_field(class_name, form._meta.model)
if field in form.fields:
is_hidden = form.fields[field].widget.is_hidden
else:
is_hidden = False
self.field = {
'name': class_name,
'label': label,
'help_text': help_text,
'field': field,
'is_hidden': is_hidden,
}
self.form = form
self.model_admin = model_admin
self.is_first = is_first
self.is_checkbox = False
self.is_readonly = True
self.empty_value_display = model_admin.get_empty_value_display()
def label_tag(self):
attrs = {}
if not self.is_first:
attrs["class"] = "inline"
label = self.field['label']
return format_html('<label{}>{}{}</label>', flatatt(attrs), capfirst(label), self.form.label_suffix)
def get_admin_url(self, remote_field, remote_obj):
url_name = 'admin:%s_%s_change' % (
remote_field.model._meta.app_label,
remote_field.model._meta.model_name,
)
try:
url = reverse(url_name, args=[quote(remote_obj.pk)])
return format_html('<a href="{}">{}</a>', url, remote_obj)
except NoReverseMatch:
return str(remote_obj)
def contents(self):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
field, obj, model_admin = self.field['field'], self.form.instance, self.model_admin
try:
f, attr, value = lookup_field(field, obj, model_admin)
except (AttributeError, ValueError, ObjectDoesNotExist):
result_repr = self.empty_value_display
else:
if field in self.form.fields:
widget = self.form[field].field.widget
# This isn't elegant but suffices for contrib.auth's
# ReadOnlyPasswordHashWidget.
if getattr(widget, 'read_only', False):
return widget.render(field, value)
if f is None:
if getattr(attr, 'boolean', False):
result_repr = _boolean_icon(value)
else:
if hasattr(value, "__html__"):
result_repr = value
else:
result_repr = linebreaksbr(value)
else:
if isinstance(f.remote_field, ManyToManyRel) and value is not None:
result_repr = ", ".join(map(str, value.all()))
elif (
isinstance(f.remote_field, (ForeignObjectRel, OneToOneField)) and
value is not None
):
result_repr = self.get_admin_url(f.remote_field, value)
else:
result_repr = display_for_field(value, f, self.empty_value_display)
result_repr = linebreaksbr(result_repr)
return conditional_escape(result_repr)
class InlineAdminFormSet:
"""
A wrapper around an inline formset for use in the admin system.
"""
def __init__(self, inline, formset, fieldsets, prepopulated_fields=None,
readonly_fields=None, model_admin=None, has_add_permission=True,
has_change_permission=True, has_delete_permission=True,
has_view_permission=True):
self.opts = inline
self.formset = formset
self.fieldsets = fieldsets
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
if prepopulated_fields is None:
prepopulated_fields = {}
self.prepopulated_fields = prepopulated_fields
self.classes = ' '.join(inline.classes) if inline.classes else ''
self.has_add_permission = has_add_permission
self.has_change_permission = has_change_permission
self.has_delete_permission = has_delete_permission
self.has_view_permission = has_view_permission
def __iter__(self):
if self.has_change_permission:
readonly_fields_for_editing = self.readonly_fields
else:
readonly_fields_for_editing = self.readonly_fields + flatten_fieldsets(self.fieldsets)
for form, original in zip(self.formset.initial_forms, self.formset.get_queryset()):
view_on_site_url = self.opts.get_view_on_site_url(original)
yield InlineAdminForm(
self.formset, form, self.fieldsets, self.prepopulated_fields,
original, readonly_fields_for_editing, model_admin=self.opts,
view_on_site_url=view_on_site_url,
)
for form in self.formset.extra_forms:
yield InlineAdminForm(
self.formset, form, self.fieldsets, self.prepopulated_fields,
None, self.readonly_fields, model_admin=self.opts,
)
if self.has_add_permission:
yield InlineAdminForm(
self.formset, self.formset.empty_form,
self.fieldsets, self.prepopulated_fields, None,
self.readonly_fields, model_admin=self.opts,
)
def fields(self):
fk = getattr(self.formset, "fk", None)
empty_form = self.formset.empty_form
meta_labels = empty_form._meta.labels or {}
meta_help_texts = empty_form._meta.help_texts or {}
for i, field_name in enumerate(flatten_fieldsets(self.fieldsets)):
if fk and fk.name == field_name:
continue
if not self.has_change_permission or field_name in self.readonly_fields:
form_field = empty_form.fields.get(field_name)
widget_is_hidden = False
if form_field is not None:
widget_is_hidden = form_field.widget.is_hidden
yield {
'name': field_name,
'label': meta_labels.get(field_name) or label_for_field(
field_name,
self.opts.model,
self.opts,
form=empty_form,
),
'widget': {'is_hidden': widget_is_hidden},
'required': False,
'help_text': meta_help_texts.get(field_name) or help_text_for_field(field_name, self.opts.model),
}
else:
form_field = empty_form.fields[field_name]
label = form_field.label
if label is None:
label = label_for_field(field_name, self.opts.model, self.opts, form=empty_form)
yield {
'name': field_name,
'label': label,
'widget': form_field.widget,
'required': form_field.required,
'help_text': form_field.help_text,
}
def inline_formset_data(self):
verbose_name = self.opts.verbose_name
return json.dumps({
'name': '#%s' % self.formset.prefix,
'options': {
'prefix': self.formset.prefix,
'addText': gettext('Add another %(verbose_name)s') % {
'verbose_name': capfirst(verbose_name),
},
'deleteText': gettext('Remove'),
}
})
@property
def forms(self):
return self.formset.forms
@property
def non_form_errors(self):
return self.formset.non_form_errors
@property
def media(self):
media = self.opts.media + self.formset.media
for fs in self:
media = media + fs.media
return media
class InlineAdminForm(AdminForm):
"""
A wrapper around an inline form for use in the admin system.
"""
def __init__(self, formset, form, fieldsets, prepopulated_fields, original,
readonly_fields=None, model_admin=None, view_on_site_url=None):
self.formset = formset
self.model_admin = model_admin
self.original = original
self.show_url = original and view_on_site_url is not None
self.absolute_url = view_on_site_url
super().__init__(form, fieldsets, prepopulated_fields, readonly_fields, model_admin)
def __iter__(self):
for name, options in self.fieldsets:
yield InlineFieldset(
self.formset, self.form, name, self.readonly_fields,
model_admin=self.model_admin, **options
)
def needs_explicit_pk_field(self):
return (
# Auto fields are editable, so check for auto or non-editable pk.
self.form._meta.model._meta.auto_field or not self.form._meta.model._meta.pk.editable or
# Also search any parents for an auto field. (The pk info is
# propagated to child models so that does not need to be checked
# in parents.)
any(parent._meta.auto_field or not parent._meta.model._meta.pk.editable
for parent in self.form._meta.model._meta.get_parent_list())
)
def pk_field(self):
return AdminField(self.form, self.formset._pk_field.name, False)
def fk_field(self):
fk = getattr(self.formset, "fk", None)
if fk:
return AdminField(self.form, fk.name, False)
else:
return ""
def deletion_field(self):
from django.forms.formsets import DELETION_FIELD_NAME
return AdminField(self.form, DELETION_FIELD_NAME, False)
def ordering_field(self):
from django.forms.formsets import ORDERING_FIELD_NAME
return AdminField(self.form, ORDERING_FIELD_NAME, False)
class InlineFieldset(Fieldset):
def __init__(self, formset, *args, **kwargs):
self.formset = formset
super().__init__(*args, **kwargs)
def __iter__(self):
fk = getattr(self.formset, "fk", None)
for field in self.fields:
if not fk or fk.name != field:
yield Fieldline(self.form, field, self.readonly_fields, model_admin=self.model_admin)
class AdminErrorList(forms.utils.ErrorList):
"""Store errors for the form/formsets in an add/change view."""
def __init__(self, form, inline_formsets):
super().__init__()
if form.is_bound:
self.extend(form.errors.values())
for inline_formset in inline_formsets:
self.extend(inline_formset.non_form_errors())
for errors_in_inline_form in inline_formset.errors:
self.extend(errors_in_inline_form.values())
|
bdb28b1947a9d0a2d3975fd31d0b2a55a9c0000a77186445baaaff0db37ef750 | import copy
import json
import re
from functools import partial, update_wrapper
from urllib.parse import quote as urlquote
from django import forms
from django.conf import settings
from django.contrib import messages
from django.contrib.admin import helpers, widgets
from django.contrib.admin.checks import (
BaseModelAdminChecks, InlineModelAdminChecks, ModelAdminChecks,
)
from django.contrib.admin.decorators import display
from django.contrib.admin.exceptions import DisallowedModelAdminToField
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.utils import (
NestedObjects, construct_change_message, flatten_fieldsets,
get_deleted_objects, lookup_spawns_duplicates, model_format_dict,
model_ngettext, quote, unquote,
)
from django.contrib.admin.widgets import (
AutocompleteSelect, AutocompleteSelectMultiple,
)
from django.contrib.auth import get_permission_codename
from django.core.exceptions import (
FieldDoesNotExist, FieldError, PermissionDenied, ValidationError,
)
from django.core.paginator import Paginator
from django.db import models, router, transaction
from django.db.models.constants import LOOKUP_SEP
from django.forms.formsets import DELETION_FIELD_NAME, all_valid
from django.forms.models import (
BaseInlineFormSet, inlineformset_factory, modelform_defines_fields,
modelform_factory, modelformset_factory,
)
from django.forms.widgets import CheckboxSelectMultiple, SelectMultiple
from django.http import HttpResponseRedirect
from django.http.response import HttpResponseBase
from django.template.response import SimpleTemplateResponse, TemplateResponse
from django.urls import reverse
from django.utils.decorators import method_decorator
from django.utils.html import format_html
from django.utils.http import urlencode
from django.utils.safestring import mark_safe
from django.utils.text import (
capfirst, format_lazy, get_text_list, smart_split, unescape_string_literal,
)
from django.utils.translation import gettext as _, ngettext
from django.views.decorators.csrf import csrf_protect
from django.views.generic import RedirectView
IS_POPUP_VAR = '_popup'
TO_FIELD_VAR = '_to_field'
HORIZONTAL, VERTICAL = 1, 2
def get_content_type_for_model(obj):
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level.
from django.contrib.contenttypes.models import ContentType
return ContentType.objects.get_for_model(obj, for_concrete_model=False)
def get_ul_class(radio_style):
return 'radiolist' if radio_style == VERTICAL else 'radiolist inline'
class IncorrectLookupParameters(Exception):
pass
# Defaults for formfield_overrides. ModelAdmin subclasses can change this
# by adding to ModelAdmin.formfield_overrides.
FORMFIELD_FOR_DBFIELD_DEFAULTS = {
models.DateTimeField: {
'form_class': forms.SplitDateTimeField,
'widget': widgets.AdminSplitDateTime
},
models.DateField: {'widget': widgets.AdminDateWidget},
models.TimeField: {'widget': widgets.AdminTimeWidget},
models.TextField: {'widget': widgets.AdminTextareaWidget},
models.URLField: {'widget': widgets.AdminURLFieldWidget},
models.IntegerField: {'widget': widgets.AdminIntegerFieldWidget},
models.BigIntegerField: {'widget': widgets.AdminBigIntegerFieldWidget},
models.CharField: {'widget': widgets.AdminTextInputWidget},
models.ImageField: {'widget': widgets.AdminFileWidget},
models.FileField: {'widget': widgets.AdminFileWidget},
models.EmailField: {'widget': widgets.AdminEmailInputWidget},
models.UUIDField: {'widget': widgets.AdminUUIDInputWidget},
}
csrf_protect_m = method_decorator(csrf_protect)
class BaseModelAdmin(metaclass=forms.MediaDefiningClass):
"""Functionality common to both ModelAdmin and InlineAdmin."""
autocomplete_fields = ()
raw_id_fields = ()
fields = None
exclude = None
fieldsets = None
form = forms.ModelForm
filter_vertical = ()
filter_horizontal = ()
radio_fields = {}
prepopulated_fields = {}
formfield_overrides = {}
readonly_fields = ()
ordering = None
sortable_by = None
view_on_site = True
show_full_result_count = True
checks_class = BaseModelAdminChecks
def check(self, **kwargs):
return self.checks_class().check(self, **kwargs)
def __init__(self):
# Merge FORMFIELD_FOR_DBFIELD_DEFAULTS with the formfield_overrides
# rather than simply overwriting.
overrides = copy.deepcopy(FORMFIELD_FOR_DBFIELD_DEFAULTS)
for k, v in self.formfield_overrides.items():
overrides.setdefault(k, {}).update(v)
self.formfield_overrides = overrides
def formfield_for_dbfield(self, db_field, request, **kwargs):
"""
Hook for specifying the form Field instance for a given database Field
instance.
If kwargs are given, they're passed to the form Field's constructor.
"""
# If the field specifies choices, we don't need to look for special
# admin widgets - we just need to use a select widget of some kind.
if db_field.choices:
return self.formfield_for_choice_field(db_field, request, **kwargs)
# ForeignKey or ManyToManyFields
if isinstance(db_field, (models.ForeignKey, models.ManyToManyField)):
# Combine the field kwargs with any options for formfield_overrides.
# Make sure the passed in **kwargs override anything in
# formfield_overrides because **kwargs is more specific, and should
# always win.
if db_field.__class__ in self.formfield_overrides:
kwargs = {**self.formfield_overrides[db_field.__class__], **kwargs}
# Get the correct formfield.
if isinstance(db_field, models.ForeignKey):
formfield = self.formfield_for_foreignkey(db_field, request, **kwargs)
elif isinstance(db_field, models.ManyToManyField):
formfield = self.formfield_for_manytomany(db_field, request, **kwargs)
# For non-raw_id fields, wrap the widget with a wrapper that adds
# extra HTML -- the "add other" interface -- to the end of the
# rendered output. formfield can be None if it came from a
# OneToOneField with parent_link=True or a M2M intermediary.
if formfield and db_field.name not in self.raw_id_fields:
related_modeladmin = self.admin_site._registry.get(db_field.remote_field.model)
wrapper_kwargs = {}
if related_modeladmin:
wrapper_kwargs.update(
can_add_related=related_modeladmin.has_add_permission(request),
can_change_related=related_modeladmin.has_change_permission(request),
can_delete_related=related_modeladmin.has_delete_permission(request),
can_view_related=related_modeladmin.has_view_permission(request),
)
formfield.widget = widgets.RelatedFieldWidgetWrapper(
formfield.widget, db_field.remote_field, self.admin_site, **wrapper_kwargs
)
return formfield
# If we've got overrides for the formfield defined, use 'em. **kwargs
# passed to formfield_for_dbfield override the defaults.
for klass in db_field.__class__.mro():
if klass in self.formfield_overrides:
kwargs = {**copy.deepcopy(self.formfield_overrides[klass]), **kwargs}
return db_field.formfield(**kwargs)
# For any other type of field, just call its formfield() method.
return db_field.formfield(**kwargs)
def formfield_for_choice_field(self, db_field, request, **kwargs):
"""
Get a form Field for a database Field that has declared choices.
"""
# If the field is named as a radio_field, use a RadioSelect
if db_field.name in self.radio_fields:
# Avoid stomping on custom widget/choices arguments.
if 'widget' not in kwargs:
kwargs['widget'] = widgets.AdminRadioSelect(attrs={
'class': get_ul_class(self.radio_fields[db_field.name]),
})
if 'choices' not in kwargs:
kwargs['choices'] = db_field.get_choices(
include_blank=db_field.blank,
blank_choice=[('', _('None'))]
)
return db_field.formfield(**kwargs)
def get_field_queryset(self, db, db_field, request):
"""
If the ModelAdmin specifies ordering, the queryset should respect that
ordering. Otherwise don't specify the queryset, let the field decide
(return None in that case).
"""
related_admin = self.admin_site._registry.get(db_field.remote_field.model)
if related_admin is not None:
ordering = related_admin.get_ordering(request)
if ordering is not None and ordering != ():
return db_field.remote_field.model._default_manager.using(db).order_by(*ordering)
return None
def formfield_for_foreignkey(self, db_field, request, **kwargs):
"""
Get a form Field for a ForeignKey.
"""
db = kwargs.get('using')
if 'widget' not in kwargs:
if db_field.name in self.get_autocomplete_fields(request):
kwargs['widget'] = AutocompleteSelect(db_field, self.admin_site, using=db)
elif db_field.name in self.raw_id_fields:
kwargs['widget'] = widgets.ForeignKeyRawIdWidget(db_field.remote_field, self.admin_site, using=db)
elif db_field.name in self.radio_fields:
kwargs['widget'] = widgets.AdminRadioSelect(attrs={
'class': get_ul_class(self.radio_fields[db_field.name]),
})
kwargs['empty_label'] = _('None') if db_field.blank else None
if 'queryset' not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs['queryset'] = queryset
return db_field.formfield(**kwargs)
def formfield_for_manytomany(self, db_field, request, **kwargs):
"""
Get a form Field for a ManyToManyField.
"""
# If it uses an intermediary model that isn't auto created, don't show
# a field in admin.
if not db_field.remote_field.through._meta.auto_created:
return None
db = kwargs.get('using')
if 'widget' not in kwargs:
autocomplete_fields = self.get_autocomplete_fields(request)
if db_field.name in autocomplete_fields:
kwargs['widget'] = AutocompleteSelectMultiple(
db_field,
self.admin_site,
using=db,
)
elif db_field.name in self.raw_id_fields:
kwargs['widget'] = widgets.ManyToManyRawIdWidget(
db_field.remote_field,
self.admin_site,
using=db,
)
elif db_field.name in [*self.filter_vertical, *self.filter_horizontal]:
kwargs['widget'] = widgets.FilteredSelectMultiple(
db_field.verbose_name,
db_field.name in self.filter_vertical
)
if 'queryset' not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs['queryset'] = queryset
form_field = db_field.formfield(**kwargs)
if (isinstance(form_field.widget, SelectMultiple) and
not isinstance(form_field.widget, (CheckboxSelectMultiple, AutocompleteSelectMultiple))):
msg = _('Hold down “Control”, or “Command” on a Mac, to select more than one.')
help_text = form_field.help_text
form_field.help_text = format_lazy('{} {}', help_text, msg) if help_text else msg
return form_field
def get_autocomplete_fields(self, request):
"""
Return a list of ForeignKey and/or ManyToMany fields which should use
an autocomplete widget.
"""
return self.autocomplete_fields
def get_view_on_site_url(self, obj=None):
if obj is None or not self.view_on_site:
return None
if callable(self.view_on_site):
return self.view_on_site(obj)
elif hasattr(obj, 'get_absolute_url'):
# use the ContentType lookup if view_on_site is True
return reverse('admin:view_on_site', kwargs={
'content_type_id': get_content_type_for_model(obj).pk,
'object_id': obj.pk
})
def get_empty_value_display(self):
"""
Return the empty_value_display set on ModelAdmin or AdminSite.
"""
try:
return mark_safe(self.empty_value_display)
except AttributeError:
return mark_safe(self.admin_site.empty_value_display)
def get_exclude(self, request, obj=None):
"""
Hook for specifying exclude.
"""
return self.exclude
def get_fields(self, request, obj=None):
"""
Hook for specifying fields.
"""
if self.fields:
return self.fields
# _get_form_for_get_fields() is implemented in subclasses.
form = self._get_form_for_get_fields(request, obj)
return [*form.base_fields, *self.get_readonly_fields(request, obj)]
def get_fieldsets(self, request, obj=None):
"""
Hook for specifying fieldsets.
"""
if self.fieldsets:
return self.fieldsets
return [(None, {'fields': self.get_fields(request, obj)})]
def get_inlines(self, request, obj):
"""Hook for specifying custom inlines."""
return self.inlines
def get_ordering(self, request):
"""
Hook for specifying field ordering.
"""
return self.ordering or () # otherwise we might try to *None, which is bad ;)
def get_readonly_fields(self, request, obj=None):
"""
Hook for specifying custom readonly fields.
"""
return self.readonly_fields
def get_prepopulated_fields(self, request, obj=None):
"""
Hook for specifying custom prepopulated fields.
"""
return self.prepopulated_fields
def get_queryset(self, request):
"""
Return a QuerySet of all model instances that can be edited by the
admin site. This is used by changelist_view.
"""
qs = self.model._default_manager.get_queryset()
# TODO: this should be handled by some parameter to the ChangeList.
ordering = self.get_ordering(request)
if ordering:
qs = qs.order_by(*ordering)
return qs
def get_sortable_by(self, request):
"""Hook for specifying which fields can be sorted in the changelist."""
return self.sortable_by if self.sortable_by is not None else self.get_list_display(request)
def lookup_allowed(self, lookup, value):
from django.contrib.admin.filters import SimpleListFilter
model = self.model
# Check FKey lookups that are allowed, so that popups produced by
# ForeignKeyRawIdWidget, on the basis of ForeignKey.limit_choices_to,
# are allowed to work.
for fk_lookup in model._meta.related_fkey_lookups:
# As ``limit_choices_to`` can be a callable, invoke it here.
if callable(fk_lookup):
fk_lookup = fk_lookup()
if (lookup, value) in widgets.url_params_from_lookup_dict(fk_lookup).items():
return True
relation_parts = []
prev_field = None
for part in lookup.split(LOOKUP_SEP):
try:
field = model._meta.get_field(part)
except FieldDoesNotExist:
# Lookups on nonexistent fields are ok, since they're ignored
# later.
break
# It is allowed to filter on values that would be found from local
# model anyways. For example, if you filter on employee__department__id,
# then the id value would be found already from employee__department_id.
if not prev_field or (prev_field.is_relation and
field not in prev_field.get_path_info()[-1].target_fields):
relation_parts.append(part)
if not getattr(field, 'get_path_info', None):
# This is not a relational field, so further parts
# must be transforms.
break
prev_field = field
model = field.get_path_info()[-1].to_opts.model
if len(relation_parts) <= 1:
# Either a local field filter, or no fields at all.
return True
valid_lookups = {self.date_hierarchy}
for filter_item in self.list_filter:
if isinstance(filter_item, type) and issubclass(filter_item, SimpleListFilter):
valid_lookups.add(filter_item.parameter_name)
elif isinstance(filter_item, (list, tuple)):
valid_lookups.add(filter_item[0])
else:
valid_lookups.add(filter_item)
# Is it a valid relational lookup?
return not {
LOOKUP_SEP.join(relation_parts),
LOOKUP_SEP.join(relation_parts + [part])
}.isdisjoint(valid_lookups)
def to_field_allowed(self, request, to_field):
"""
Return True if the model associated with this admin should be
allowed to be referenced by the specified field.
"""
opts = self.model._meta
try:
field = opts.get_field(to_field)
except FieldDoesNotExist:
return False
# Always allow referencing the primary key since it's already possible
# to get this information from the change view URL.
if field.primary_key:
return True
# Allow reverse relationships to models defining m2m fields if they
# target the specified field.
for many_to_many in opts.many_to_many:
if many_to_many.m2m_target_field_name() == to_field:
return True
# Make sure at least one of the models registered for this site
# references this field through a FK or a M2M relationship.
registered_models = set()
for model, admin in self.admin_site._registry.items():
registered_models.add(model)
for inline in admin.inlines:
registered_models.add(inline.model)
related_objects = (
f for f in opts.get_fields(include_hidden=True)
if (f.auto_created and not f.concrete)
)
for related_object in related_objects:
related_model = related_object.related_model
remote_field = related_object.field.remote_field
if (any(issubclass(model, related_model) for model in registered_models) and
hasattr(remote_field, 'get_related_field') and
remote_field.get_related_field() == field):
return True
return False
def has_add_permission(self, request):
"""
Return True if the given request has permission to add an object.
Can be overridden by the user in subclasses.
"""
opts = self.opts
codename = get_permission_codename('add', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_change_permission(self, request, obj=None):
"""
Return True if the given request has permission to change the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to change the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to change *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename('change', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_delete_permission(self, request, obj=None):
"""
Return True if the given request has permission to change the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to delete the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to delete *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename('delete', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_view_permission(self, request, obj=None):
"""
Return True if the given request has permission to view the given
Django model instance. The default implementation doesn't examine the
`obj` parameter.
If overridden by the user in subclasses, it should return True if the
given request has permission to view the `obj` model instance. If `obj`
is None, it should return True if the request has permission to view
any object of the given type.
"""
opts = self.opts
codename_view = get_permission_codename('view', opts)
codename_change = get_permission_codename('change', opts)
return (
request.user.has_perm('%s.%s' % (opts.app_label, codename_view)) or
request.user.has_perm('%s.%s' % (opts.app_label, codename_change))
)
def has_view_or_change_permission(self, request, obj=None):
return self.has_view_permission(request, obj) or self.has_change_permission(request, obj)
def has_module_permission(self, request):
"""
Return True if the given request has any permission in the given
app label.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to view the module on
the admin index page and access the module's index page. Overriding it
does not restrict access to the add, change or delete views. Use
`ModelAdmin.has_(add|change|delete)_permission` for that.
"""
return request.user.has_module_perms(self.opts.app_label)
class ModelAdmin(BaseModelAdmin):
"""Encapsulate all admin options and functionality for a given model."""
list_display = ('__str__',)
list_display_links = ()
list_filter = ()
list_select_related = False
list_per_page = 100
list_max_show_all = 200
list_editable = ()
search_fields = ()
search_help_text = None
date_hierarchy = None
save_as = False
save_as_continue = True
save_on_top = False
paginator = Paginator
preserve_filters = True
inlines = []
# Custom templates (designed to be over-ridden in subclasses)
add_form_template = None
change_form_template = None
change_list_template = None
delete_confirmation_template = None
delete_selected_confirmation_template = None
object_history_template = None
popup_response_template = None
# Actions
actions = []
action_form = helpers.ActionForm
actions_on_top = True
actions_on_bottom = False
actions_selection_counter = True
checks_class = ModelAdminChecks
def __init__(self, model, admin_site):
self.model = model
self.opts = model._meta
self.admin_site = admin_site
super().__init__()
def __str__(self):
return "%s.%s" % (self.model._meta.app_label, self.__class__.__name__)
def __repr__(self):
return (
f'<{self.__class__.__qualname__}: model={self.model.__qualname__} '
f'site={self.admin_site!r}>'
)
def get_inline_instances(self, request, obj=None):
inline_instances = []
for inline_class in self.get_inlines(request, obj):
inline = inline_class(self.model, self.admin_site)
if request:
if not (inline.has_view_or_change_permission(request, obj) or
inline.has_add_permission(request, obj) or
inline.has_delete_permission(request, obj)):
continue
if not inline.has_add_permission(request, obj):
inline.max_num = 0
inline_instances.append(inline)
return inline_instances
def get_urls(self):
from django.urls import path
def wrap(view):
def wrapper(*args, **kwargs):
return self.admin_site.admin_view(view)(*args, **kwargs)
wrapper.model_admin = self
return update_wrapper(wrapper, view)
info = self.model._meta.app_label, self.model._meta.model_name
return [
path('', wrap(self.changelist_view), name='%s_%s_changelist' % info),
path('add/', wrap(self.add_view), name='%s_%s_add' % info),
path('<path:object_id>/history/', wrap(self.history_view), name='%s_%s_history' % info),
path('<path:object_id>/delete/', wrap(self.delete_view), name='%s_%s_delete' % info),
path('<path:object_id>/change/', wrap(self.change_view), name='%s_%s_change' % info),
# For backwards compatibility (was the change url before 1.9)
path('<path:object_id>/', wrap(RedirectView.as_view(
pattern_name='%s:%s_%s_change' % ((self.admin_site.name,) + info)
))),
]
@property
def urls(self):
return self.get_urls()
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = [
'vendor/jquery/jquery%s.js' % extra,
'jquery.init.js',
'core.js',
'admin/RelatedObjectLookups.js',
'actions.js',
'urlify.js',
'prepopulate.js',
'vendor/xregexp/xregexp%s.js' % extra,
]
return forms.Media(js=['admin/js/%s' % url for url in js])
def get_model_perms(self, request):
"""
Return a dict of all perms for this model. This dict has the keys
``add``, ``change``, ``delete``, and ``view`` mapping to the True/False
for each of those actions.
"""
return {
'add': self.has_add_permission(request),
'change': self.has_change_permission(request),
'delete': self.has_delete_permission(request),
'view': self.has_view_permission(request),
}
def _get_form_for_get_fields(self, request, obj):
return self.get_form(request, obj, fields=None)
def get_form(self, request, obj=None, change=False, **kwargs):
"""
Return a Form class for use in the admin add view. This is used by
add_view and change_view.
"""
if 'fields' in kwargs:
fields = kwargs.pop('fields')
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
excluded = self.get_exclude(request, obj)
exclude = [] if excluded is None else list(excluded)
readonly_fields = self.get_readonly_fields(request, obj)
exclude.extend(readonly_fields)
# Exclude all fields if it's a change form and the user doesn't have
# the change permission.
if change and hasattr(request, 'user') and not self.has_change_permission(request, obj):
exclude.extend(fields)
if excluded is None and hasattr(self.form, '_meta') and self.form._meta.exclude:
# Take the custom ModelForm's Meta.exclude into account only if the
# ModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
# if exclude is an empty list we pass None to be consistent with the
# default on modelform_factory
exclude = exclude or None
# Remove declared form fields which are in readonly_fields.
new_attrs = dict.fromkeys(f for f in readonly_fields if f in self.form.declared_fields)
form = type(self.form.__name__, (self.form,), new_attrs)
defaults = {
'form': form,
'fields': fields,
'exclude': exclude,
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
if defaults['fields'] is None and not modelform_defines_fields(defaults['form']):
defaults['fields'] = forms.ALL_FIELDS
try:
return modelform_factory(self.model, **defaults)
except FieldError as e:
raise FieldError(
'%s. Check fields/fieldsets/exclude attributes of class %s.'
% (e, self.__class__.__name__)
)
def get_changelist(self, request, **kwargs):
"""
Return the ChangeList class for use on the changelist page.
"""
from django.contrib.admin.views.main import ChangeList
return ChangeList
def get_changelist_instance(self, request):
"""
Return a `ChangeList` instance based on `request`. May raise
`IncorrectLookupParameters`.
"""
list_display = self.get_list_display(request)
list_display_links = self.get_list_display_links(request, list_display)
# Add the action checkboxes if any actions are available.
if self.get_actions(request):
list_display = ['action_checkbox', *list_display]
sortable_by = self.get_sortable_by(request)
ChangeList = self.get_changelist(request)
return ChangeList(
request,
self.model,
list_display,
list_display_links,
self.get_list_filter(request),
self.date_hierarchy,
self.get_search_fields(request),
self.get_list_select_related(request),
self.list_per_page,
self.list_max_show_all,
self.list_editable,
self,
sortable_by,
self.search_help_text,
)
def get_object(self, request, object_id, from_field=None):
"""
Return an instance matching the field and value provided, the primary
key is used if no field is provided. Return ``None`` if no match is
found or the object_id fails validation.
"""
queryset = self.get_queryset(request)
model = queryset.model
field = model._meta.pk if from_field is None else model._meta.get_field(from_field)
try:
object_id = field.to_python(object_id)
return queryset.get(**{field.name: object_id})
except (model.DoesNotExist, ValidationError, ValueError):
return None
def get_changelist_form(self, request, **kwargs):
"""
Return a Form class for use in the Formset on the changelist page.
"""
defaults = {
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
if defaults.get('fields') is None and not modelform_defines_fields(defaults.get('form')):
defaults['fields'] = forms.ALL_FIELDS
return modelform_factory(self.model, **defaults)
def get_changelist_formset(self, request, **kwargs):
"""
Return a FormSet class for use on the changelist page if list_editable
is used.
"""
defaults = {
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
return modelformset_factory(
self.model, self.get_changelist_form(request), extra=0,
fields=self.list_editable, **defaults
)
def get_formsets_with_inlines(self, request, obj=None):
"""
Yield formsets and the corresponding inlines.
"""
for inline in self.get_inline_instances(request, obj):
yield inline.get_formset(request, obj), inline
def get_paginator(self, request, queryset, per_page, orphans=0, allow_empty_first_page=True):
return self.paginator(queryset, per_page, orphans, allow_empty_first_page)
def log_addition(self, request, obj, message):
"""
Log that an object has been successfully added.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import ADDITION, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=str(obj),
action_flag=ADDITION,
change_message=message,
)
def log_change(self, request, obj, message):
"""
Log that an object has been successfully changed.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import CHANGE, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=str(obj),
action_flag=CHANGE,
change_message=message,
)
def log_deletion(self, request, obj, object_repr):
"""
Log that an object will be deleted. Note that this method must be
called before the deletion.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import DELETION, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=object_repr,
action_flag=DELETION,
)
@display(description=mark_safe('<input type="checkbox" id="action-toggle">'))
def action_checkbox(self, obj):
"""
A list_display column containing a checkbox widget.
"""
return helpers.checkbox.render(helpers.ACTION_CHECKBOX_NAME, str(obj.pk))
@staticmethod
def _get_action_description(func, name):
return getattr(func, 'short_description', capfirst(name.replace('_', ' ')))
def _get_base_actions(self):
"""Return the list of actions, prior to any request-based filtering."""
actions = []
base_actions = (self.get_action(action) for action in self.actions or [])
# get_action might have returned None, so filter any of those out.
base_actions = [action for action in base_actions if action]
base_action_names = {name for _, name, _ in base_actions}
# Gather actions from the admin site first
for (name, func) in self.admin_site.actions:
if name in base_action_names:
continue
description = self._get_action_description(func, name)
actions.append((func, name, description))
# Add actions from this ModelAdmin.
actions.extend(base_actions)
return actions
def _filter_actions_by_permissions(self, request, actions):
"""Filter out any actions that the user doesn't have access to."""
filtered_actions = []
for action in actions:
callable = action[0]
if not hasattr(callable, 'allowed_permissions'):
filtered_actions.append(action)
continue
permission_checks = (
getattr(self, 'has_%s_permission' % permission)
for permission in callable.allowed_permissions
)
if any(has_permission(request) for has_permission in permission_checks):
filtered_actions.append(action)
return filtered_actions
def get_actions(self, request):
"""
Return a dictionary mapping the names of all actions for this
ModelAdmin to a tuple of (callable, name, description) for each action.
"""
# If self.actions is set to None that means actions are disabled on
# this page.
if self.actions is None or IS_POPUP_VAR in request.GET:
return {}
actions = self._filter_actions_by_permissions(request, self._get_base_actions())
return {name: (func, name, desc) for func, name, desc in actions}
def get_action_choices(self, request, default_choices=models.BLANK_CHOICE_DASH):
"""
Return a list of choices for use in a form object. Each choice is a
tuple (name, description).
"""
choices = [] + default_choices
for func, name, description in self.get_actions(request).values():
choice = (name, description % model_format_dict(self.opts))
choices.append(choice)
return choices
def get_action(self, action):
"""
Return a given action from a parameter, which can either be a callable,
or the name of a method on the ModelAdmin. Return is a tuple of
(callable, name, description).
"""
# If the action is a callable, just use it.
if callable(action):
func = action
action = action.__name__
# Next, look for a method. Grab it off self.__class__ to get an unbound
# method instead of a bound one; this ensures that the calling
# conventions are the same for functions and methods.
elif hasattr(self.__class__, action):
func = getattr(self.__class__, action)
# Finally, look for a named method on the admin site
else:
try:
func = self.admin_site.get_action(action)
except KeyError:
return None
description = self._get_action_description(func, action)
return func, action, description
def get_list_display(self, request):
"""
Return a sequence containing the fields to be displayed on the
changelist.
"""
return self.list_display
def get_list_display_links(self, request, list_display):
"""
Return a sequence containing the fields to be displayed as links
on the changelist. The list_display parameter is the list of fields
returned by get_list_display().
"""
if self.list_display_links or self.list_display_links is None or not list_display:
return self.list_display_links
else:
# Use only the first item in list_display as link
return list(list_display)[:1]
def get_list_filter(self, request):
"""
Return a sequence containing the fields to be displayed as filters in
the right sidebar of the changelist page.
"""
return self.list_filter
def get_list_select_related(self, request):
"""
Return a list of fields to add to the select_related() part of the
changelist items query.
"""
return self.list_select_related
def get_search_fields(self, request):
"""
Return a sequence containing the fields to be searched whenever
somebody submits a search query.
"""
return self.search_fields
def get_search_results(self, request, queryset, search_term):
"""
Return a tuple containing a queryset to implement the search
and a boolean indicating if the results may contain duplicates.
"""
# Apply keyword searches.
def construct_search(field_name):
if field_name.startswith('^'):
return "%s__istartswith" % field_name[1:]
elif field_name.startswith('='):
return "%s__iexact" % field_name[1:]
elif field_name.startswith('@'):
return "%s__search" % field_name[1:]
# Use field_name if it includes a lookup.
opts = queryset.model._meta
lookup_fields = field_name.split(LOOKUP_SEP)
# Go through the fields, following all relations.
prev_field = None
for path_part in lookup_fields:
if path_part == 'pk':
path_part = opts.pk.name
try:
field = opts.get_field(path_part)
except FieldDoesNotExist:
# Use valid query lookups.
if prev_field and prev_field.get_lookup(path_part):
return field_name
else:
prev_field = field
if hasattr(field, 'get_path_info'):
# Update opts to follow the relation.
opts = field.get_path_info()[-1].to_opts
# Otherwise, use the field with icontains.
return "%s__icontains" % field_name
may_have_duplicates = False
search_fields = self.get_search_fields(request)
if search_fields and search_term:
orm_lookups = [construct_search(str(search_field))
for search_field in search_fields]
for bit in smart_split(search_term):
if bit.startswith(('"', "'")) and bit[0] == bit[-1]:
bit = unescape_string_literal(bit)
or_queries = models.Q(
*((orm_lookup, bit) for orm_lookup in orm_lookups),
_connector=models.Q.OR,
)
queryset = queryset.filter(or_queries)
may_have_duplicates |= any(
lookup_spawns_duplicates(self.opts, search_spec)
for search_spec in orm_lookups
)
return queryset, may_have_duplicates
def get_preserved_filters(self, request):
"""
Return the preserved filters querystring.
"""
match = request.resolver_match
if self.preserve_filters and match:
opts = self.model._meta
current_url = '%s:%s' % (match.app_name, match.url_name)
changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
if current_url == changelist_url:
preserved_filters = request.GET.urlencode()
else:
preserved_filters = request.GET.get('_changelist_filters')
if preserved_filters:
return urlencode({'_changelist_filters': preserved_filters})
return ''
def construct_change_message(self, request, form, formsets, add=False):
"""
Construct a JSON structure describing changes from a changed object.
"""
return construct_change_message(form, formsets, add)
def message_user(self, request, message, level=messages.INFO, extra_tags='',
fail_silently=False):
"""
Send a message to the user. The default implementation
posts a message using the django.contrib.messages backend.
Exposes almost the same API as messages.add_message(), but accepts the
positional arguments in a different order to maintain backwards
compatibility. For convenience, it accepts the `level` argument as
a string rather than the usual level number.
"""
if not isinstance(level, int):
# attempt to get the level if passed a string
try:
level = getattr(messages.constants, level.upper())
except AttributeError:
levels = messages.constants.DEFAULT_TAGS.values()
levels_repr = ', '.join('`%s`' % level for level in levels)
raise ValueError(
'Bad message level string: `%s`. Possible values are: %s'
% (level, levels_repr)
)
messages.add_message(request, level, message, extra_tags=extra_tags, fail_silently=fail_silently)
def save_form(self, request, form, change):
"""
Given a ModelForm return an unsaved instance. ``change`` is True if
the object is being changed, and False if it's being added.
"""
return form.save(commit=False)
def save_model(self, request, obj, form, change):
"""
Given a model instance save it to the database.
"""
obj.save()
def delete_model(self, request, obj):
"""
Given a model instance delete it from the database.
"""
obj.delete()
def delete_queryset(self, request, queryset):
"""Given a queryset, delete it from the database."""
queryset.delete()
def save_formset(self, request, form, formset, change):
"""
Given an inline formset save it to the database.
"""
formset.save()
def save_related(self, request, form, formsets, change):
"""
Given the ``HttpRequest``, the parent ``ModelForm`` instance, the
list of inline formsets and a boolean value based on whether the
parent is being added or changed, save the related objects to the
database. Note that at this point save_form() and save_model() have
already been called.
"""
form.save_m2m()
for formset in formsets:
self.save_formset(request, form, formset, change=change)
def render_change_form(self, request, context, add=False, change=False, form_url='', obj=None):
opts = self.model._meta
app_label = opts.app_label
preserved_filters = self.get_preserved_filters(request)
form_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, form_url)
view_on_site_url = self.get_view_on_site_url(obj)
has_editable_inline_admin_formsets = False
for inline in context['inline_admin_formsets']:
if inline.has_add_permission or inline.has_change_permission or inline.has_delete_permission:
has_editable_inline_admin_formsets = True
break
context.update({
'add': add,
'change': change,
'has_view_permission': self.has_view_permission(request, obj),
'has_add_permission': self.has_add_permission(request),
'has_change_permission': self.has_change_permission(request, obj),
'has_delete_permission': self.has_delete_permission(request, obj),
'has_editable_inline_admin_formsets': has_editable_inline_admin_formsets,
'has_file_field': context['adminform'].form.is_multipart() or any(
admin_formset.formset.is_multipart()
for admin_formset in context['inline_admin_formsets']
),
'has_absolute_url': view_on_site_url is not None,
'absolute_url': view_on_site_url,
'form_url': form_url,
'opts': opts,
'content_type_id': get_content_type_for_model(self.model).pk,
'save_as': self.save_as,
'save_on_top': self.save_on_top,
'to_field_var': TO_FIELD_VAR,
'is_popup_var': IS_POPUP_VAR,
'app_label': app_label,
})
if add and self.add_form_template is not None:
form_template = self.add_form_template
else:
form_template = self.change_form_template
request.current_app = self.admin_site.name
return TemplateResponse(request, form_template or [
"admin/%s/%s/change_form.html" % (app_label, opts.model_name),
"admin/%s/change_form.html" % app_label,
"admin/change_form.html"
], context)
def response_add(self, request, obj, post_url_continue=None):
"""
Determine the HttpResponse for the add_view stage.
"""
opts = obj._meta
preserved_filters = self.get_preserved_filters(request)
obj_url = reverse(
'admin:%s_%s_change' % (opts.app_label, opts.model_name),
args=(quote(obj.pk),),
current_app=self.admin_site.name,
)
# Add a link to the object's change form if the user can edit the obj.
if self.has_change_permission(request, obj):
obj_repr = format_html('<a href="{}">{}</a>', urlquote(obj_url), obj)
else:
obj_repr = str(obj)
msg_dict = {
'name': opts.verbose_name,
'obj': obj_repr,
}
# Here, we distinguish between different save types by checking for
# the presence of keys in request.POST.
if IS_POPUP_VAR in request.POST:
to_field = request.POST.get(TO_FIELD_VAR)
if to_field:
attr = str(to_field)
else:
attr = obj._meta.pk.attname
value = obj.serializable_value(attr)
popup_response_data = json.dumps({
'value': str(value),
'obj': str(obj),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
elif "_continue" in request.POST or (
# Redirecting after "Save as new".
"_saveasnew" in request.POST and self.save_as_continue and
self.has_change_permission(request, obj)
):
msg = _('The {name} “{obj}” was added successfully.')
if self.has_change_permission(request, obj):
msg += ' ' + _('You may edit it again below.')
self.message_user(request, format_html(msg, **msg_dict), messages.SUCCESS)
if post_url_continue is None:
post_url_continue = obj_url
post_url_continue = add_preserved_filters(
{'preserved_filters': preserved_filters, 'opts': opts},
post_url_continue
)
return HttpResponseRedirect(post_url_continue)
elif "_addanother" in request.POST:
msg = format_html(
_('The {name} “{obj}” was added successfully. You may add another {name} below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = request.path
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
else:
msg = format_html(
_('The {name} “{obj}” was added successfully.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
return self.response_post_save_add(request, obj)
def response_change(self, request, obj):
"""
Determine the HttpResponse for the change_view stage.
"""
if IS_POPUP_VAR in request.POST:
opts = obj._meta
to_field = request.POST.get(TO_FIELD_VAR)
attr = str(to_field) if to_field else opts.pk.attname
value = request.resolver_match.kwargs['object_id']
new_value = obj.serializable_value(attr)
popup_response_data = json.dumps({
'action': 'change',
'value': str(value),
'obj': str(obj),
'new_value': str(new_value),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
opts = self.model._meta
preserved_filters = self.get_preserved_filters(request)
msg_dict = {
'name': opts.verbose_name,
'obj': format_html('<a href="{}">{}</a>', urlquote(request.path), obj),
}
if "_continue" in request.POST:
msg = format_html(
_('The {name} “{obj}” was changed successfully. You may edit it again below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = request.path
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
elif "_saveasnew" in request.POST:
msg = format_html(
_('The {name} “{obj}” was added successfully. You may edit it again below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = reverse('admin:%s_%s_change' %
(opts.app_label, opts.model_name),
args=(obj.pk,),
current_app=self.admin_site.name)
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
elif "_addanother" in request.POST:
msg = format_html(
_('The {name} “{obj}” was changed successfully. You may add another {name} below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = reverse('admin:%s_%s_add' %
(opts.app_label, opts.model_name),
current_app=self.admin_site.name)
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
else:
msg = format_html(
_('The {name} “{obj}” was changed successfully.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
return self.response_post_save_change(request, obj)
def _response_post_save(self, request, obj):
opts = self.model._meta
if self.has_view_or_change_permission(request):
post_url = reverse('admin:%s_%s_changelist' %
(opts.app_label, opts.model_name),
current_app=self.admin_site.name)
preserved_filters = self.get_preserved_filters(request)
post_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, post_url)
else:
post_url = reverse('admin:index',
current_app=self.admin_site.name)
return HttpResponseRedirect(post_url)
def response_post_save_add(self, request, obj):
"""
Figure out where to redirect after the 'Save' button has been pressed
when adding a new object.
"""
return self._response_post_save(request, obj)
def response_post_save_change(self, request, obj):
"""
Figure out where to redirect after the 'Save' button has been pressed
when editing an existing object.
"""
return self._response_post_save(request, obj)
def response_action(self, request, queryset):
"""
Handle an admin action. This is called if a request is POSTed to the
changelist; it returns an HttpResponse if the action was handled, and
None otherwise.
"""
# There can be multiple action forms on the page (at the top
# and bottom of the change list, for example). Get the action
# whose button was pushed.
try:
action_index = int(request.POST.get('index', 0))
except ValueError:
action_index = 0
# Construct the action form.
data = request.POST.copy()
data.pop(helpers.ACTION_CHECKBOX_NAME, None)
data.pop("index", None)
# Use the action whose button was pushed
try:
data.update({'action': data.getlist('action')[action_index]})
except IndexError:
# If we didn't get an action from the chosen form that's invalid
# POST data, so by deleting action it'll fail the validation check
# below. So no need to do anything here
pass
action_form = self.action_form(data, auto_id=None)
action_form.fields['action'].choices = self.get_action_choices(request)
# If the form's valid we can handle the action.
if action_form.is_valid():
action = action_form.cleaned_data['action']
select_across = action_form.cleaned_data['select_across']
func = self.get_actions(request)[action][0]
# Get the list of selected PKs. If nothing's selected, we can't
# perform an action on it, so bail. Except we want to perform
# the action explicitly on all objects.
selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME)
if not selected and not select_across:
# Reminder that something needs to be selected or nothing will happen
msg = _("Items must be selected in order to perform "
"actions on them. No items have been changed.")
self.message_user(request, msg, messages.WARNING)
return None
if not select_across:
# Perform the action only on the selected objects
queryset = queryset.filter(pk__in=selected)
response = func(self, request, queryset)
# Actions may return an HttpResponse-like object, which will be
# used as the response from the POST. If not, we'll be a good
# little HTTP citizen and redirect back to the changelist page.
if isinstance(response, HttpResponseBase):
return response
else:
return HttpResponseRedirect(request.get_full_path())
else:
msg = _("No action selected.")
self.message_user(request, msg, messages.WARNING)
return None
def response_delete(self, request, obj_display, obj_id):
"""
Determine the HttpResponse for the delete_view stage.
"""
opts = self.model._meta
if IS_POPUP_VAR in request.POST:
popup_response_data = json.dumps({
'action': 'delete',
'value': str(obj_id),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
self.message_user(
request,
_('The %(name)s “%(obj)s” was deleted successfully.') % {
'name': opts.verbose_name,
'obj': obj_display,
},
messages.SUCCESS,
)
if self.has_change_permission(request, None):
post_url = reverse(
'admin:%s_%s_changelist' % (opts.app_label, opts.model_name),
current_app=self.admin_site.name,
)
preserved_filters = self.get_preserved_filters(request)
post_url = add_preserved_filters(
{'preserved_filters': preserved_filters, 'opts': opts}, post_url
)
else:
post_url = reverse('admin:index', current_app=self.admin_site.name)
return HttpResponseRedirect(post_url)
def render_delete_form(self, request, context):
opts = self.model._meta
app_label = opts.app_label
request.current_app = self.admin_site.name
context.update(
to_field_var=TO_FIELD_VAR,
is_popup_var=IS_POPUP_VAR,
media=self.media,
)
return TemplateResponse(
request,
self.delete_confirmation_template or [
"admin/{}/{}/delete_confirmation.html".format(app_label, opts.model_name),
"admin/{}/delete_confirmation.html".format(app_label),
"admin/delete_confirmation.html",
],
context,
)
def get_inline_formsets(self, request, formsets, inline_instances, obj=None):
# Edit permissions on parent model are required for editable inlines.
can_edit_parent = self.has_change_permission(request, obj) if obj else self.has_add_permission(request)
inline_admin_formsets = []
for inline, formset in zip(inline_instances, formsets):
fieldsets = list(inline.get_fieldsets(request, obj))
readonly = list(inline.get_readonly_fields(request, obj))
if can_edit_parent:
has_add_permission = inline.has_add_permission(request, obj)
has_change_permission = inline.has_change_permission(request, obj)
has_delete_permission = inline.has_delete_permission(request, obj)
else:
# Disable all edit-permissions, and overide formset settings.
has_add_permission = has_change_permission = has_delete_permission = False
formset.extra = formset.max_num = 0
has_view_permission = inline.has_view_permission(request, obj)
prepopulated = dict(inline.get_prepopulated_fields(request, obj))
inline_admin_formset = helpers.InlineAdminFormSet(
inline, formset, fieldsets, prepopulated, readonly, model_admin=self,
has_add_permission=has_add_permission, has_change_permission=has_change_permission,
has_delete_permission=has_delete_permission, has_view_permission=has_view_permission,
)
inline_admin_formsets.append(inline_admin_formset)
return inline_admin_formsets
def get_changeform_initial_data(self, request):
"""
Get the initial form data from the request's GET params.
"""
initial = dict(request.GET.items())
for k in initial:
try:
f = self.model._meta.get_field(k)
except FieldDoesNotExist:
continue
# We have to special-case M2Ms as a list of comma-separated PKs.
if isinstance(f, models.ManyToManyField):
initial[k] = initial[k].split(",")
return initial
def _get_obj_does_not_exist_redirect(self, request, opts, object_id):
"""
Create a message informing the user that the object doesn't exist
and return a redirect to the admin index page.
"""
msg = _('%(name)s with ID “%(key)s” doesn’t exist. Perhaps it was deleted?') % {
'name': opts.verbose_name,
'key': unquote(object_id),
}
self.message_user(request, msg, messages.WARNING)
url = reverse('admin:index', current_app=self.admin_site.name)
return HttpResponseRedirect(url)
@csrf_protect_m
def changeform_view(self, request, object_id=None, form_url='', extra_context=None):
with transaction.atomic(using=router.db_for_write(self.model)):
return self._changeform_view(request, object_id, form_url, extra_context)
def _changeform_view(self, request, object_id, form_url, extra_context):
to_field = request.POST.get(TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR))
if to_field and not self.to_field_allowed(request, to_field):
raise DisallowedModelAdminToField("The field %s cannot be referenced." % to_field)
model = self.model
opts = model._meta
if request.method == 'POST' and '_saveasnew' in request.POST:
object_id = None
add = object_id is None
if add:
if not self.has_add_permission(request):
raise PermissionDenied
obj = None
else:
obj = self.get_object(request, unquote(object_id), to_field)
if request.method == 'POST':
if not self.has_change_permission(request, obj):
raise PermissionDenied
else:
if not self.has_view_or_change_permission(request, obj):
raise PermissionDenied
if obj is None:
return self._get_obj_does_not_exist_redirect(request, opts, object_id)
fieldsets = self.get_fieldsets(request, obj)
ModelForm = self.get_form(
request, obj, change=not add, fields=flatten_fieldsets(fieldsets)
)
if request.method == 'POST':
form = ModelForm(request.POST, request.FILES, instance=obj)
form_validated = form.is_valid()
if form_validated:
new_object = self.save_form(request, form, change=not add)
else:
new_object = form.instance
formsets, inline_instances = self._create_formsets(request, new_object, change=not add)
if all_valid(formsets) and form_validated:
self.save_model(request, new_object, form, not add)
self.save_related(request, form, formsets, not add)
change_message = self.construct_change_message(request, form, formsets, add)
if add:
self.log_addition(request, new_object, change_message)
return self.response_add(request, new_object)
else:
self.log_change(request, new_object, change_message)
return self.response_change(request, new_object)
else:
form_validated = False
else:
if add:
initial = self.get_changeform_initial_data(request)
form = ModelForm(initial=initial)
formsets, inline_instances = self._create_formsets(request, form.instance, change=False)
else:
form = ModelForm(instance=obj)
formsets, inline_instances = self._create_formsets(request, obj, change=True)
if not add and not self.has_change_permission(request, obj):
readonly_fields = flatten_fieldsets(fieldsets)
else:
readonly_fields = self.get_readonly_fields(request, obj)
adminForm = helpers.AdminForm(
form,
list(fieldsets),
# Clear prepopulated fields on a view-only form to avoid a crash.
self.get_prepopulated_fields(request, obj) if add or self.has_change_permission(request, obj) else {},
readonly_fields,
model_admin=self)
media = self.media + adminForm.media
inline_formsets = self.get_inline_formsets(request, formsets, inline_instances, obj)
for inline_formset in inline_formsets:
media = media + inline_formset.media
if add:
title = _('Add %s')
elif self.has_change_permission(request, obj):
title = _('Change %s')
else:
title = _('View %s')
context = {
**self.admin_site.each_context(request),
'title': title % opts.verbose_name,
'subtitle': str(obj) if obj else None,
'adminform': adminForm,
'object_id': object_id,
'original': obj,
'is_popup': IS_POPUP_VAR in request.POST or IS_POPUP_VAR in request.GET,
'to_field': to_field,
'media': media,
'inline_admin_formsets': inline_formsets,
'errors': helpers.AdminErrorList(form, formsets),
'preserved_filters': self.get_preserved_filters(request),
}
# Hide the "Save" and "Save and continue" buttons if "Save as New" was
# previously chosen to prevent the interface from getting confusing.
if request.method == 'POST' and not form_validated and "_saveasnew" in request.POST:
context['show_save'] = False
context['show_save_and_continue'] = False
# Use the change template instead of the add template.
add = False
context.update(extra_context or {})
return self.render_change_form(request, context, add=add, change=not add, obj=obj, form_url=form_url)
def add_view(self, request, form_url='', extra_context=None):
return self.changeform_view(request, None, form_url, extra_context)
def change_view(self, request, object_id, form_url='', extra_context=None):
return self.changeform_view(request, object_id, form_url, extra_context)
def _get_edited_object_pks(self, request, prefix):
"""Return POST data values of list_editable primary keys."""
pk_pattern = re.compile(
r'{}-\d+-{}$'.format(re.escape(prefix), self.model._meta.pk.name)
)
return [value for key, value in request.POST.items() if pk_pattern.match(key)]
def _get_list_editable_queryset(self, request, prefix):
"""
Based on POST data, return a queryset of the objects that were edited
via list_editable.
"""
object_pks = self._get_edited_object_pks(request, prefix)
queryset = self.get_queryset(request)
validate = queryset.model._meta.pk.to_python
try:
for pk in object_pks:
validate(pk)
except ValidationError:
# Disable the optimization if the POST data was tampered with.
return queryset
return queryset.filter(pk__in=object_pks)
@csrf_protect_m
def changelist_view(self, request, extra_context=None):
"""
The 'change list' admin view for this model.
"""
from django.contrib.admin.views.main import ERROR_FLAG
opts = self.model._meta
app_label = opts.app_label
if not self.has_view_or_change_permission(request):
raise PermissionDenied
try:
cl = self.get_changelist_instance(request)
except IncorrectLookupParameters:
# Wacky lookup parameters were given, so redirect to the main
# changelist page, without parameters, and pass an 'invalid=1'
# parameter via the query string. If wacky parameters were given
# and the 'invalid=1' parameter was already in the query string,
# something is screwed up with the database, so display an error
# page.
if ERROR_FLAG in request.GET:
return SimpleTemplateResponse('admin/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(request.path + '?' + ERROR_FLAG + '=1')
# If the request was POSTed, this might be a bulk action or a bulk
# edit. Try to look up an action or confirmation first, but if this
# isn't an action the POST will fall through to the bulk edit check,
# below.
action_failed = False
selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME)
actions = self.get_actions(request)
# Actions with no confirmation
if (actions and request.method == 'POST' and
'index' in request.POST and '_save' not in request.POST):
if selected:
response = self.response_action(request, queryset=cl.get_queryset(request))
if response:
return response
else:
action_failed = True
else:
msg = _("Items must be selected in order to perform "
"actions on them. No items have been changed.")
self.message_user(request, msg, messages.WARNING)
action_failed = True
# Actions with confirmation
if (actions and request.method == 'POST' and
helpers.ACTION_CHECKBOX_NAME in request.POST and
'index' not in request.POST and '_save' not in request.POST):
if selected:
response = self.response_action(request, queryset=cl.get_queryset(request))
if response:
return response
else:
action_failed = True
if action_failed:
# Redirect back to the changelist page to avoid resubmitting the
# form if the user refreshes the browser or uses the "No, take
# me back" button on the action confirmation page.
return HttpResponseRedirect(request.get_full_path())
# If we're allowing changelist editing, we need to construct a formset
# for the changelist given all the fields to be edited. Then we'll
# use the formset to validate/process POSTed data.
formset = cl.formset = None
# Handle POSTed bulk-edit data.
if request.method == 'POST' and cl.list_editable and '_save' in request.POST:
if not self.has_change_permission(request):
raise PermissionDenied
FormSet = self.get_changelist_formset(request)
modified_objects = self._get_list_editable_queryset(request, FormSet.get_default_prefix())
formset = cl.formset = FormSet(request.POST, request.FILES, queryset=modified_objects)
if formset.is_valid():
changecount = 0
for form in formset.forms:
if form.has_changed():
obj = self.save_form(request, form, change=True)
self.save_model(request, obj, form, change=True)
self.save_related(request, form, formsets=[], change=True)
change_msg = self.construct_change_message(request, form, None)
self.log_change(request, obj, change_msg)
changecount += 1
if changecount:
msg = ngettext(
"%(count)s %(name)s was changed successfully.",
"%(count)s %(name)s were changed successfully.",
changecount
) % {
'count': changecount,
'name': model_ngettext(opts, changecount),
}
self.message_user(request, msg, messages.SUCCESS)
return HttpResponseRedirect(request.get_full_path())
# Handle GET -- construct a formset for display.
elif cl.list_editable and self.has_change_permission(request):
FormSet = self.get_changelist_formset(request)
formset = cl.formset = FormSet(queryset=cl.result_list)
# Build the list of media to be used by the formset.
if formset:
media = self.media + formset.media
else:
media = self.media
# Build the action form and populate it with available actions.
if actions:
action_form = self.action_form(auto_id=None)
action_form.fields['action'].choices = self.get_action_choices(request)
media += action_form.media
else:
action_form = None
selection_note_all = ngettext(
'%(total_count)s selected',
'All %(total_count)s selected',
cl.result_count
)
context = {
**self.admin_site.each_context(request),
'module_name': str(opts.verbose_name_plural),
'selection_note': _('0 of %(cnt)s selected') % {'cnt': len(cl.result_list)},
'selection_note_all': selection_note_all % {'total_count': cl.result_count},
'title': cl.title,
'subtitle': None,
'is_popup': cl.is_popup,
'to_field': cl.to_field,
'cl': cl,
'media': media,
'has_add_permission': self.has_add_permission(request),
'opts': cl.opts,
'action_form': action_form,
'actions_on_top': self.actions_on_top,
'actions_on_bottom': self.actions_on_bottom,
'actions_selection_counter': self.actions_selection_counter,
'preserved_filters': self.get_preserved_filters(request),
**(extra_context or {}),
}
request.current_app = self.admin_site.name
return TemplateResponse(request, self.change_list_template or [
'admin/%s/%s/change_list.html' % (app_label, opts.model_name),
'admin/%s/change_list.html' % app_label,
'admin/change_list.html'
], context)
def get_deleted_objects(self, objs, request):
"""
Hook for customizing the delete process for the delete view and the
"delete selected" action.
"""
return get_deleted_objects(objs, request, self.admin_site)
@csrf_protect_m
def delete_view(self, request, object_id, extra_context=None):
with transaction.atomic(using=router.db_for_write(self.model)):
return self._delete_view(request, object_id, extra_context)
def _delete_view(self, request, object_id, extra_context):
"The 'delete' admin view for this model."
opts = self.model._meta
app_label = opts.app_label
to_field = request.POST.get(TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR))
if to_field and not self.to_field_allowed(request, to_field):
raise DisallowedModelAdminToField("The field %s cannot be referenced." % to_field)
obj = self.get_object(request, unquote(object_id), to_field)
if not self.has_delete_permission(request, obj):
raise PermissionDenied
if obj is None:
return self._get_obj_does_not_exist_redirect(request, opts, object_id)
# Populate deleted_objects, a data structure of all related objects that
# will also be deleted.
deleted_objects, model_count, perms_needed, protected = self.get_deleted_objects([obj], request)
if request.POST and not protected: # The user has confirmed the deletion.
if perms_needed:
raise PermissionDenied
obj_display = str(obj)
attr = str(to_field) if to_field else opts.pk.attname
obj_id = obj.serializable_value(attr)
self.log_deletion(request, obj, obj_display)
self.delete_model(request, obj)
return self.response_delete(request, obj_display, obj_id)
object_name = str(opts.verbose_name)
if perms_needed or protected:
title = _("Cannot delete %(name)s") % {"name": object_name}
else:
title = _("Are you sure?")
context = {
**self.admin_site.each_context(request),
'title': title,
'subtitle': None,
'object_name': object_name,
'object': obj,
'deleted_objects': deleted_objects,
'model_count': dict(model_count).items(),
'perms_lacking': perms_needed,
'protected': protected,
'opts': opts,
'app_label': app_label,
'preserved_filters': self.get_preserved_filters(request),
'is_popup': IS_POPUP_VAR in request.POST or IS_POPUP_VAR in request.GET,
'to_field': to_field,
**(extra_context or {}),
}
return self.render_delete_form(request, context)
def history_view(self, request, object_id, extra_context=None):
"The 'history' admin view for this model."
from django.contrib.admin.models import LogEntry
# First check if the user can see this history.
model = self.model
obj = self.get_object(request, unquote(object_id))
if obj is None:
return self._get_obj_does_not_exist_redirect(request, model._meta, object_id)
if not self.has_view_or_change_permission(request, obj):
raise PermissionDenied
# Then get the history for this object.
opts = model._meta
app_label = opts.app_label
action_list = LogEntry.objects.filter(
object_id=unquote(object_id),
content_type=get_content_type_for_model(model)
).select_related().order_by('action_time')
context = {
**self.admin_site.each_context(request),
'title': _('Change history: %s') % obj,
'subtitle': None,
'action_list': action_list,
'module_name': str(capfirst(opts.verbose_name_plural)),
'object': obj,
'opts': opts,
'preserved_filters': self.get_preserved_filters(request),
**(extra_context or {}),
}
request.current_app = self.admin_site.name
return TemplateResponse(request, self.object_history_template or [
"admin/%s/%s/object_history.html" % (app_label, opts.model_name),
"admin/%s/object_history.html" % app_label,
"admin/object_history.html"
], context)
def get_formset_kwargs(self, request, obj, inline, prefix):
formset_params = {
'instance': obj,
'prefix': prefix,
'queryset': inline.get_queryset(request),
}
if request.method == 'POST':
formset_params.update({
'data': request.POST.copy(),
'files': request.FILES,
'save_as_new': '_saveasnew' in request.POST
})
return formset_params
def _create_formsets(self, request, obj, change):
"Helper function to generate formsets for add/change_view."
formsets = []
inline_instances = []
prefixes = {}
get_formsets_args = [request]
if change:
get_formsets_args.append(obj)
for FormSet, inline in self.get_formsets_with_inlines(*get_formsets_args):
prefix = FormSet.get_default_prefix()
prefixes[prefix] = prefixes.get(prefix, 0) + 1
if prefixes[prefix] != 1 or not prefix:
prefix = "%s-%s" % (prefix, prefixes[prefix])
formset_params = self.get_formset_kwargs(request, obj, inline, prefix)
formset = FormSet(**formset_params)
def user_deleted_form(request, obj, formset, index):
"""Return whether or not the user deleted the form."""
return (
inline.has_delete_permission(request, obj) and
'{}-{}-DELETE'.format(formset.prefix, index) in request.POST
)
# Bypass validation of each view-only inline form (since the form's
# data won't be in request.POST), unless the form was deleted.
if not inline.has_change_permission(request, obj if change else None):
for index, form in enumerate(formset.initial_forms):
if user_deleted_form(request, obj, formset, index):
continue
form._errors = {}
form.cleaned_data = form.initial
formsets.append(formset)
inline_instances.append(inline)
return formsets, inline_instances
class InlineModelAdmin(BaseModelAdmin):
"""
Options for inline editing of ``model`` instances.
Provide ``fk_name`` to specify the attribute name of the ``ForeignKey``
from ``model`` to its parent. This is required if ``model`` has more than
one ``ForeignKey`` to its parent.
"""
model = None
fk_name = None
formset = BaseInlineFormSet
extra = 3
min_num = None
max_num = None
template = None
verbose_name = None
verbose_name_plural = None
can_delete = True
show_change_link = False
checks_class = InlineModelAdminChecks
classes = None
def __init__(self, parent_model, admin_site):
self.admin_site = admin_site
self.parent_model = parent_model
self.opts = self.model._meta
self.has_registered_model = admin_site.is_registered(self.model)
super().__init__()
if self.verbose_name_plural is None:
if self.verbose_name is None:
self.verbose_name_plural = self.model._meta.verbose_name_plural
else:
self.verbose_name_plural = format_lazy('{}s', self.verbose_name)
if self.verbose_name is None:
self.verbose_name = self.model._meta.verbose_name
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = ['vendor/jquery/jquery%s.js' % extra, 'jquery.init.js', 'inlines.js']
if self.filter_vertical or self.filter_horizontal:
js.extend(['SelectBox.js', 'SelectFilter2.js'])
if self.classes and 'collapse' in self.classes:
js.append('collapse.js')
return forms.Media(js=['admin/js/%s' % url for url in js])
def get_extra(self, request, obj=None, **kwargs):
"""Hook for customizing the number of extra inline forms."""
return self.extra
def get_min_num(self, request, obj=None, **kwargs):
"""Hook for customizing the min number of inline forms."""
return self.min_num
def get_max_num(self, request, obj=None, **kwargs):
"""Hook for customizing the max number of extra inline forms."""
return self.max_num
def get_formset(self, request, obj=None, **kwargs):
"""Return a BaseInlineFormSet class for use in admin add/change views."""
if 'fields' in kwargs:
fields = kwargs.pop('fields')
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
excluded = self.get_exclude(request, obj)
exclude = [] if excluded is None else list(excluded)
exclude.extend(self.get_readonly_fields(request, obj))
if excluded is None and hasattr(self.form, '_meta') and self.form._meta.exclude:
# Take the custom ModelForm's Meta.exclude into account only if the
# InlineModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
# If exclude is an empty list we use None, since that's the actual
# default.
exclude = exclude or None
can_delete = self.can_delete and self.has_delete_permission(request, obj)
defaults = {
'form': self.form,
'formset': self.formset,
'fk_name': self.fk_name,
'fields': fields,
'exclude': exclude,
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
'extra': self.get_extra(request, obj, **kwargs),
'min_num': self.get_min_num(request, obj, **kwargs),
'max_num': self.get_max_num(request, obj, **kwargs),
'can_delete': can_delete,
**kwargs,
}
base_model_form = defaults['form']
can_change = self.has_change_permission(request, obj) if request else True
can_add = self.has_add_permission(request, obj) if request else True
class DeleteProtectedModelForm(base_model_form):
def hand_clean_DELETE(self):
"""
We don't validate the 'DELETE' field itself because on
templates it's not rendered using the field information, but
just using a generic "deletion_field" of the InlineModelAdmin.
"""
if self.cleaned_data.get(DELETION_FIELD_NAME, False):
using = router.db_for_write(self._meta.model)
collector = NestedObjects(using=using)
if self.instance._state.adding:
return
collector.collect([self.instance])
if collector.protected:
objs = []
for p in collector.protected:
objs.append(
# Translators: Model verbose name and instance representation,
# suitable to be an item in a list.
_('%(class_name)s %(instance)s') % {
'class_name': p._meta.verbose_name,
'instance': p}
)
params = {
'class_name': self._meta.model._meta.verbose_name,
'instance': self.instance,
'related_objects': get_text_list(objs, _('and')),
}
msg = _("Deleting %(class_name)s %(instance)s would require "
"deleting the following protected related objects: "
"%(related_objects)s")
raise ValidationError(msg, code='deleting_protected', params=params)
def is_valid(self):
result = super().is_valid()
self.hand_clean_DELETE()
return result
def has_changed(self):
# Protect against unauthorized edits.
if not can_change and not self.instance._state.adding:
return False
if not can_add and self.instance._state.adding:
return False
return super().has_changed()
defaults['form'] = DeleteProtectedModelForm
if defaults['fields'] is None and not modelform_defines_fields(defaults['form']):
defaults['fields'] = forms.ALL_FIELDS
return inlineformset_factory(self.parent_model, self.model, **defaults)
def _get_form_for_get_fields(self, request, obj=None):
return self.get_formset(request, obj, fields=None).form
def get_queryset(self, request):
queryset = super().get_queryset(request)
if not self.has_view_or_change_permission(request):
queryset = queryset.none()
return queryset
def _has_any_perms_for_target_model(self, request, perms):
"""
This method is called only when the ModelAdmin's model is for an
ManyToManyField's implicit through model (if self.opts.auto_created).
Return True if the user has any of the given permissions ('add',
'change', etc.) for the model that points to the through model.
"""
opts = self.opts
# Find the target model of an auto-created many-to-many relationship.
for field in opts.fields:
if field.remote_field and field.remote_field.model != self.parent_model:
opts = field.remote_field.model._meta
break
return any(
request.user.has_perm('%s.%s' % (opts.app_label, get_permission_codename(perm, opts)))
for perm in perms
)
def has_add_permission(self, request, obj):
if self.opts.auto_created:
# Auto-created intermediate models don't have their own
# permissions. The user needs to have the change permission for the
# related model in order to be able to do anything with the
# intermediate model.
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_add_permission(request)
def has_change_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission().
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_change_permission(request)
def has_delete_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission().
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_delete_permission(request, obj)
def has_view_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission(). The 'change' permission
# also implies the 'view' permission.
return self._has_any_perms_for_target_model(request, ['view', 'change'])
return super().has_view_permission(request)
class StackedInline(InlineModelAdmin):
template = 'admin/edit_inline/stacked.html'
class TabularInline(InlineModelAdmin):
template = 'admin/edit_inline/tabular.html'
|
51863b2702c229297f76e7cb4796c1081504547767e577aa43133e52d158c871 | from unittest import mock, skipUnless
from django.conf.global_settings import PASSWORD_HASHERS
from django.contrib.auth.hashers import (
UNUSABLE_PASSWORD_PREFIX, UNUSABLE_PASSWORD_SUFFIX_LENGTH,
BasePasswordHasher, BCryptPasswordHasher, BCryptSHA256PasswordHasher,
MD5PasswordHasher, PBKDF2PasswordHasher, PBKDF2SHA1PasswordHasher,
ScryptPasswordHasher, SHA1PasswordHasher, check_password, get_hasher,
identify_hasher, is_password_usable, make_password,
)
from django.test import SimpleTestCase
from django.test.utils import override_settings
try:
import crypt
except ImportError:
crypt = None
else:
# On some platforms (e.g. OpenBSD), crypt.crypt() always return None.
if crypt.crypt('') is None:
crypt = None
try:
import bcrypt
except ImportError:
bcrypt = None
try:
import argon2
except ImportError:
argon2 = None
class PBKDF2SingleIterationHasher(PBKDF2PasswordHasher):
iterations = 1
@override_settings(PASSWORD_HASHERS=PASSWORD_HASHERS)
class TestUtilsHashPass(SimpleTestCase):
def test_simple(self):
encoded = make_password('lètmein')
self.assertTrue(encoded.startswith('pbkdf2_sha256$'))
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
# Blank passwords
blank_encoded = make_password('')
self.assertTrue(blank_encoded.startswith('pbkdf2_sha256$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
def test_bytes(self):
encoded = make_password(b'bytes_password')
self.assertTrue(encoded.startswith('pbkdf2_sha256$'))
self.assertIs(is_password_usable(encoded), True)
self.assertIs(check_password(b'bytes_password', encoded), True)
def test_invalid_password(self):
msg = 'Password must be a string or bytes, got int.'
with self.assertRaisesMessage(TypeError, msg):
make_password(1)
def test_pbkdf2(self):
encoded = make_password('lètmein', 'seasalt', 'pbkdf2_sha256')
self.assertEqual(encoded, 'pbkdf2_sha256$320000$seasalt$Toj2II2rBvFiGQcPmUml1Nlni2UtvyRWwz/jz4q6q/4=')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "pbkdf2_sha256")
# Blank passwords
blank_encoded = make_password('', 'seasalt', 'pbkdf2_sha256')
self.assertTrue(blank_encoded.startswith('pbkdf2_sha256$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
# Salt entropy check.
hasher = get_hasher('pbkdf2_sha256')
encoded_weak_salt = make_password('lètmein', 'iodizedsalt', 'pbkdf2_sha256')
encoded_strong_salt = make_password('lètmein', hasher.salt(), 'pbkdf2_sha256')
self.assertIs(hasher.must_update(encoded_weak_salt), True)
self.assertIs(hasher.must_update(encoded_strong_salt), False)
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.SHA1PasswordHasher'])
def test_sha1(self):
encoded = make_password('lètmein', 'seasalt', 'sha1')
self.assertEqual(encoded, 'sha1$seasalt$cff36ea83f5706ce9aa7454e63e431fc726b2dc8')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "sha1")
# Blank passwords
blank_encoded = make_password('', 'seasalt', 'sha1')
self.assertTrue(blank_encoded.startswith('sha1$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
# Salt entropy check.
hasher = get_hasher('sha1')
encoded_weak_salt = make_password('lètmein', 'iodizedsalt', 'sha1')
encoded_strong_salt = make_password('lètmein', hasher.salt(), 'sha1')
self.assertIs(hasher.must_update(encoded_weak_salt), True)
self.assertIs(hasher.must_update(encoded_strong_salt), False)
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.MD5PasswordHasher'])
def test_md5(self):
encoded = make_password('lètmein', 'seasalt', 'md5')
self.assertEqual(encoded, 'md5$seasalt$3f86d0d3d465b7b458c231bf3555c0e3')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "md5")
# Blank passwords
blank_encoded = make_password('', 'seasalt', 'md5')
self.assertTrue(blank_encoded.startswith('md5$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
# Salt entropy check.
hasher = get_hasher('md5')
encoded_weak_salt = make_password('lètmein', 'iodizedsalt', 'md5')
encoded_strong_salt = make_password('lètmein', hasher.salt(), 'md5')
self.assertIs(hasher.must_update(encoded_weak_salt), True)
self.assertIs(hasher.must_update(encoded_strong_salt), False)
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.UnsaltedMD5PasswordHasher'])
def test_unsalted_md5(self):
encoded = make_password('lètmein', '', 'unsalted_md5')
self.assertEqual(encoded, '88a434c88cca4e900f7874cd98123f43')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "unsalted_md5")
# Alternate unsalted syntax
alt_encoded = "md5$$%s" % encoded
self.assertTrue(is_password_usable(alt_encoded))
self.assertTrue(check_password('lètmein', alt_encoded))
self.assertFalse(check_password('lètmeinz', alt_encoded))
# Blank passwords
blank_encoded = make_password('', '', 'unsalted_md5')
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.UnsaltedMD5PasswordHasher'])
def test_unsalted_md5_encode_invalid_salt(self):
hasher = get_hasher('unsalted_md5')
msg = 'salt must be empty.'
with self.assertRaisesMessage(ValueError, msg):
hasher.encode('password', salt='salt')
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.UnsaltedSHA1PasswordHasher'])
def test_unsalted_sha1(self):
encoded = make_password('lètmein', '', 'unsalted_sha1')
self.assertEqual(encoded, 'sha1$$6d138ca3ae545631b3abd71a4f076ce759c5700b')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "unsalted_sha1")
# Raw SHA1 isn't acceptable
alt_encoded = encoded[6:]
self.assertFalse(check_password('lètmein', alt_encoded))
# Blank passwords
blank_encoded = make_password('', '', 'unsalted_sha1')
self.assertTrue(blank_encoded.startswith('sha1$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.UnsaltedSHA1PasswordHasher'])
def test_unsalted_sha1_encode_invalid_salt(self):
hasher = get_hasher('unsalted_sha1')
msg = 'salt must be empty.'
with self.assertRaisesMessage(ValueError, msg):
hasher.encode('password', salt='salt')
@skipUnless(crypt, "no crypt module to generate password.")
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.CryptPasswordHasher'])
def test_crypt(self):
encoded = make_password('lètmei', 'ab', 'crypt')
self.assertEqual(encoded, 'crypt$$ab1Hv2Lg7ltQo')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(check_password('lètmei', encoded))
self.assertFalse(check_password('lètmeiz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "crypt")
# Blank passwords
blank_encoded = make_password('', 'ab', 'crypt')
self.assertTrue(blank_encoded.startswith('crypt$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
@skipUnless(crypt, 'no crypt module to generate password.')
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.CryptPasswordHasher'])
def test_crypt_encode_invalid_salt(self):
hasher = get_hasher('crypt')
msg = 'salt must be of length 2.'
with self.assertRaisesMessage(ValueError, msg):
hasher.encode('password', salt='a')
@skipUnless(crypt, 'no crypt module to generate password.')
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.CryptPasswordHasher'])
def test_crypt_encode_invalid_hash(self):
hasher = get_hasher('crypt')
msg = 'hash must be provided.'
with mock.patch('crypt.crypt', return_value=None):
with self.assertRaisesMessage(TypeError, msg):
hasher.encode('password', salt='ab')
@skipUnless(bcrypt, "bcrypt not installed")
def test_bcrypt_sha256(self):
encoded = make_password('lètmein', hasher='bcrypt_sha256')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(encoded.startswith('bcrypt_sha256$'))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "bcrypt_sha256")
# password truncation no longer works
password = (
'VSK0UYV6FFQVZ0KG88DYN9WADAADZO1CTSIVDJUNZSUML6IBX7LN7ZS3R5'
'JGB3RGZ7VI7G7DJQ9NI8BQFSRPTG6UWTTVESA5ZPUN'
)
encoded = make_password(password, hasher='bcrypt_sha256')
self.assertTrue(check_password(password, encoded))
self.assertFalse(check_password(password[:72], encoded))
# Blank passwords
blank_encoded = make_password('', hasher='bcrypt_sha256')
self.assertTrue(blank_encoded.startswith('bcrypt_sha256$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
@skipUnless(bcrypt, "bcrypt not installed")
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.BCryptPasswordHasher'])
def test_bcrypt(self):
encoded = make_password('lètmein', hasher='bcrypt')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(encoded.startswith('bcrypt$'))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, "bcrypt")
# Blank passwords
blank_encoded = make_password('', hasher='bcrypt')
self.assertTrue(blank_encoded.startswith('bcrypt$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
@skipUnless(bcrypt, "bcrypt not installed")
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.BCryptPasswordHasher'])
def test_bcrypt_upgrade(self):
hasher = get_hasher('bcrypt')
self.assertEqual('bcrypt', hasher.algorithm)
self.assertNotEqual(hasher.rounds, 4)
old_rounds = hasher.rounds
try:
# Generate a password with 4 rounds.
hasher.rounds = 4
encoded = make_password('letmein', hasher='bcrypt')
rounds = hasher.safe_summary(encoded)['work factor']
self.assertEqual(rounds, 4)
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
# No upgrade is triggered.
self.assertTrue(check_password('letmein', encoded, setter, 'bcrypt'))
self.assertFalse(state['upgraded'])
# Revert to the old rounds count and ...
hasher.rounds = old_rounds
# ... check if the password would get updated to the new count.
self.assertTrue(check_password('letmein', encoded, setter, 'bcrypt'))
self.assertTrue(state['upgraded'])
finally:
hasher.rounds = old_rounds
@skipUnless(bcrypt, "bcrypt not installed")
@override_settings(PASSWORD_HASHERS=['django.contrib.auth.hashers.BCryptPasswordHasher'])
def test_bcrypt_harden_runtime(self):
hasher = get_hasher('bcrypt')
self.assertEqual('bcrypt', hasher.algorithm)
with mock.patch.object(hasher, 'rounds', 4):
encoded = make_password('letmein', hasher='bcrypt')
with mock.patch.object(hasher, 'rounds', 6), \
mock.patch.object(hasher, 'encode', side_effect=hasher.encode):
hasher.harden_runtime('wrong_password', encoded)
# Increasing rounds from 4 to 6 means an increase of 4 in workload,
# therefore hardening should run 3 times to make the timing the
# same (the original encode() call already ran once).
self.assertEqual(hasher.encode.call_count, 3)
# Get the original salt (includes the original workload factor)
algorithm, data = encoded.split('$', 1)
expected_call = (('wrong_password', data[:29].encode()),)
self.assertEqual(hasher.encode.call_args_list, [expected_call] * 3)
def test_unusable(self):
encoded = make_password(None)
self.assertEqual(len(encoded), len(UNUSABLE_PASSWORD_PREFIX) + UNUSABLE_PASSWORD_SUFFIX_LENGTH)
self.assertFalse(is_password_usable(encoded))
self.assertFalse(check_password(None, encoded))
self.assertFalse(check_password(encoded, encoded))
self.assertFalse(check_password(UNUSABLE_PASSWORD_PREFIX, encoded))
self.assertFalse(check_password('', encoded))
self.assertFalse(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
with self.assertRaisesMessage(ValueError, 'Unknown password hashing algorith'):
identify_hasher(encoded)
# Assert that the unusable passwords actually contain a random part.
# This might fail one day due to a hash collision.
self.assertNotEqual(encoded, make_password(None), "Random password collision?")
def test_unspecified_password(self):
"""
Makes sure specifying no plain password with a valid encoded password
returns `False`.
"""
self.assertFalse(check_password(None, make_password('lètmein')))
def test_bad_algorithm(self):
msg = (
"Unknown password hashing algorithm '%s'. Did you specify it in "
"the PASSWORD_HASHERS setting?"
)
with self.assertRaisesMessage(ValueError, msg % 'lolcat'):
make_password('lètmein', hasher='lolcat')
with self.assertRaisesMessage(ValueError, msg % 'lolcat'):
identify_hasher('lolcat$salt$hash')
def test_is_password_usable(self):
passwords = ('lètmein_badencoded', '', None)
for password in passwords:
with self.subTest(password=password):
self.assertIs(is_password_usable(password), True)
def test_low_level_pbkdf2(self):
hasher = PBKDF2PasswordHasher()
encoded = hasher.encode('lètmein', 'seasalt2')
self.assertEqual(encoded, 'pbkdf2_sha256$320000$seasalt2$BRr4pYNIQDsLFP+u4dzjs7pFuWJEin4lFMMoO9wBYvo=')
self.assertTrue(hasher.verify('lètmein', encoded))
def test_low_level_pbkdf2_sha1(self):
hasher = PBKDF2SHA1PasswordHasher()
encoded = hasher.encode('lètmein', 'seasalt2')
self.assertEqual(encoded, 'pbkdf2_sha1$320000$seasalt2$sDOkTvzV93jPWTRVxFGh50Jefo0=')
self.assertTrue(hasher.verify('lètmein', encoded))
@skipUnless(bcrypt, 'bcrypt not installed')
def test_bcrypt_salt_check(self):
hasher = BCryptPasswordHasher()
encoded = hasher.encode('lètmein', hasher.salt())
self.assertIs(hasher.must_update(encoded), False)
@skipUnless(bcrypt, 'bcrypt not installed')
def test_bcryptsha256_salt_check(self):
hasher = BCryptSHA256PasswordHasher()
encoded = hasher.encode('lètmein', hasher.salt())
self.assertIs(hasher.must_update(encoded), False)
@override_settings(
PASSWORD_HASHERS=[
'django.contrib.auth.hashers.PBKDF2PasswordHasher',
'django.contrib.auth.hashers.SHA1PasswordHasher',
'django.contrib.auth.hashers.MD5PasswordHasher',
],
)
def test_upgrade(self):
self.assertEqual('pbkdf2_sha256', get_hasher('default').algorithm)
for algo in ('sha1', 'md5'):
with self.subTest(algo=algo):
encoded = make_password('lètmein', hasher=algo)
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
self.assertTrue(check_password('lètmein', encoded, setter))
self.assertTrue(state['upgraded'])
def test_no_upgrade(self):
encoded = make_password('lètmein')
state = {'upgraded': False}
def setter():
state['upgraded'] = True
self.assertFalse(check_password('WRONG', encoded, setter))
self.assertFalse(state['upgraded'])
@override_settings(
PASSWORD_HASHERS=[
'django.contrib.auth.hashers.PBKDF2PasswordHasher',
'django.contrib.auth.hashers.SHA1PasswordHasher',
'django.contrib.auth.hashers.MD5PasswordHasher',
],
)
def test_no_upgrade_on_incorrect_pass(self):
self.assertEqual('pbkdf2_sha256', get_hasher('default').algorithm)
for algo in ('sha1', 'md5'):
with self.subTest(algo=algo):
encoded = make_password('lètmein', hasher=algo)
state = {'upgraded': False}
def setter():
state['upgraded'] = True
self.assertFalse(check_password('WRONG', encoded, setter))
self.assertFalse(state['upgraded'])
def test_pbkdf2_upgrade(self):
hasher = get_hasher('default')
self.assertEqual('pbkdf2_sha256', hasher.algorithm)
self.assertNotEqual(hasher.iterations, 1)
old_iterations = hasher.iterations
try:
# Generate a password with 1 iteration.
hasher.iterations = 1
encoded = make_password('letmein')
algo, iterations, salt, hash = encoded.split('$', 3)
self.assertEqual(iterations, '1')
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
# No upgrade is triggered
self.assertTrue(check_password('letmein', encoded, setter))
self.assertFalse(state['upgraded'])
# Revert to the old iteration count and ...
hasher.iterations = old_iterations
# ... check if the password would get updated to the new iteration count.
self.assertTrue(check_password('letmein', encoded, setter))
self.assertTrue(state['upgraded'])
finally:
hasher.iterations = old_iterations
def test_pbkdf2_harden_runtime(self):
hasher = get_hasher('default')
self.assertEqual('pbkdf2_sha256', hasher.algorithm)
with mock.patch.object(hasher, 'iterations', 1):
encoded = make_password('letmein')
with mock.patch.object(hasher, 'iterations', 6), \
mock.patch.object(hasher, 'encode', side_effect=hasher.encode):
hasher.harden_runtime('wrong_password', encoded)
# Encode should get called once ...
self.assertEqual(hasher.encode.call_count, 1)
# ... with the original salt and 5 iterations.
algorithm, iterations, salt, hash = encoded.split('$', 3)
expected_call = (('wrong_password', salt, 5),)
self.assertEqual(hasher.encode.call_args, expected_call)
def test_pbkdf2_upgrade_new_hasher(self):
hasher = get_hasher('default')
self.assertEqual('pbkdf2_sha256', hasher.algorithm)
self.assertNotEqual(hasher.iterations, 1)
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
with self.settings(PASSWORD_HASHERS=[
'auth_tests.test_hashers.PBKDF2SingleIterationHasher']):
encoded = make_password('letmein')
algo, iterations, salt, hash = encoded.split('$', 3)
self.assertEqual(iterations, '1')
# No upgrade is triggered
self.assertTrue(check_password('letmein', encoded, setter))
self.assertFalse(state['upgraded'])
# Revert to the old iteration count and check if the password would get
# updated to the new iteration count.
with self.settings(PASSWORD_HASHERS=[
'django.contrib.auth.hashers.PBKDF2PasswordHasher',
'auth_tests.test_hashers.PBKDF2SingleIterationHasher']):
self.assertTrue(check_password('letmein', encoded, setter))
self.assertTrue(state['upgraded'])
def test_check_password_calls_harden_runtime(self):
hasher = get_hasher('default')
encoded = make_password('letmein')
with mock.patch.object(hasher, 'harden_runtime'), \
mock.patch.object(hasher, 'must_update', return_value=True):
# Correct password supplied, no hardening needed
check_password('letmein', encoded)
self.assertEqual(hasher.harden_runtime.call_count, 0)
# Wrong password supplied, hardening needed
check_password('wrong_password', encoded)
self.assertEqual(hasher.harden_runtime.call_count, 1)
def test_encode_invalid_salt(self):
hasher_classes = [
MD5PasswordHasher,
PBKDF2PasswordHasher,
PBKDF2SHA1PasswordHasher,
ScryptPasswordHasher,
SHA1PasswordHasher,
]
msg = 'salt must be provided and cannot contain $.'
for hasher_class in hasher_classes:
hasher = hasher_class()
for salt in [None, '', 'sea$salt']:
with self.subTest(hasher_class.__name__, salt=salt):
with self.assertRaisesMessage(ValueError, msg):
hasher.encode('password', salt)
def test_encode_password_required(self):
hasher_classes = [
MD5PasswordHasher,
PBKDF2PasswordHasher,
PBKDF2SHA1PasswordHasher,
ScryptPasswordHasher,
SHA1PasswordHasher,
]
msg = 'password must be provided.'
for hasher_class in hasher_classes:
hasher = hasher_class()
with self.subTest(hasher_class.__name__):
with self.assertRaisesMessage(TypeError, msg):
hasher.encode(None, 'seasalt')
class BasePasswordHasherTests(SimpleTestCase):
not_implemented_msg = 'subclasses of BasePasswordHasher must provide %s() method'
def setUp(self):
self.hasher = BasePasswordHasher()
def test_load_library_no_algorithm(self):
msg = "Hasher 'BasePasswordHasher' doesn't specify a library attribute"
with self.assertRaisesMessage(ValueError, msg):
self.hasher._load_library()
def test_load_library_importerror(self):
PlainHasher = type('PlainHasher', (BasePasswordHasher,), {'algorithm': 'plain', 'library': 'plain'})
msg = "Couldn't load 'PlainHasher' algorithm library: No module named 'plain'"
with self.assertRaisesMessage(ValueError, msg):
PlainHasher()._load_library()
def test_attributes(self):
self.assertIsNone(self.hasher.algorithm)
self.assertIsNone(self.hasher.library)
def test_encode(self):
msg = self.not_implemented_msg % 'an encode'
with self.assertRaisesMessage(NotImplementedError, msg):
self.hasher.encode('password', 'salt')
def test_decode(self):
msg = self.not_implemented_msg % 'a decode'
with self.assertRaisesMessage(NotImplementedError, msg):
self.hasher.decode('encoded')
def test_harden_runtime(self):
msg = 'subclasses of BasePasswordHasher should provide a harden_runtime() method'
with self.assertWarnsMessage(Warning, msg):
self.hasher.harden_runtime('password', 'encoded')
def test_must_update(self):
self.assertIs(self.hasher.must_update('encoded'), False)
def test_safe_summary(self):
msg = self.not_implemented_msg % 'a safe_summary'
with self.assertRaisesMessage(NotImplementedError, msg):
self.hasher.safe_summary('encoded')
def test_verify(self):
msg = self.not_implemented_msg % 'a verify'
with self.assertRaisesMessage(NotImplementedError, msg):
self.hasher.verify('password', 'encoded')
@skipUnless(argon2, "argon2-cffi not installed")
@override_settings(PASSWORD_HASHERS=PASSWORD_HASHERS)
class TestUtilsHashPassArgon2(SimpleTestCase):
def test_argon2(self):
encoded = make_password('lètmein', hasher='argon2')
self.assertTrue(is_password_usable(encoded))
self.assertTrue(encoded.startswith('argon2$argon2id$'))
self.assertTrue(check_password('lètmein', encoded))
self.assertFalse(check_password('lètmeinz', encoded))
self.assertEqual(identify_hasher(encoded).algorithm, 'argon2')
# Blank passwords
blank_encoded = make_password('', hasher='argon2')
self.assertTrue(blank_encoded.startswith('argon2$argon2id$'))
self.assertTrue(is_password_usable(blank_encoded))
self.assertTrue(check_password('', blank_encoded))
self.assertFalse(check_password(' ', blank_encoded))
# Old hashes without version attribute
encoded = (
'argon2$argon2i$m=8,t=1,p=1$c29tZXNhbHQ$gwQOXSNhxiOxPOA0+PY10P9QFO'
'4NAYysnqRt1GSQLE55m+2GYDt9FEjPMHhP2Cuf0nOEXXMocVrsJAtNSsKyfg'
)
self.assertTrue(check_password('secret', encoded))
self.assertFalse(check_password('wrong', encoded))
# Old hashes with version attribute.
encoded = (
'argon2$argon2i$v=19$m=8,t=1,p=1$c2FsdHNhbHQ$YC9+jJCrQhs5R6db7LlN8Q'
)
self.assertIs(check_password('secret', encoded), True)
self.assertIs(check_password('wrong', encoded), False)
# Salt entropy check.
hasher = get_hasher('argon2')
encoded_weak_salt = make_password('lètmein', 'iodizedsalt', 'argon2')
encoded_strong_salt = make_password('lètmein', hasher.salt(), 'argon2')
self.assertIs(hasher.must_update(encoded_weak_salt), True)
self.assertIs(hasher.must_update(encoded_strong_salt), False)
def test_argon2_decode(self):
salt = 'abcdefghijk'
encoded = make_password('lètmein', salt=salt, hasher='argon2')
hasher = get_hasher('argon2')
decoded = hasher.decode(encoded)
self.assertEqual(decoded['memory_cost'], hasher.memory_cost)
self.assertEqual(decoded['parallelism'], hasher.parallelism)
self.assertEqual(decoded['salt'], salt)
self.assertEqual(decoded['time_cost'], hasher.time_cost)
def test_argon2_upgrade(self):
self._test_argon2_upgrade('time_cost', 'time cost', 1)
self._test_argon2_upgrade('memory_cost', 'memory cost', 64)
self._test_argon2_upgrade('parallelism', 'parallelism', 1)
def test_argon2_version_upgrade(self):
hasher = get_hasher('argon2')
state = {'upgraded': False}
encoded = (
'argon2$argon2id$v=19$m=102400,t=2,p=8$Y041dExhNkljRUUy$TMa6A8fPJh'
'CAUXRhJXCXdw'
)
def setter(password):
state['upgraded'] = True
old_m = hasher.memory_cost
old_t = hasher.time_cost
old_p = hasher.parallelism
try:
hasher.memory_cost = 8
hasher.time_cost = 1
hasher.parallelism = 1
self.assertTrue(check_password('secret', encoded, setter, 'argon2'))
self.assertTrue(state['upgraded'])
finally:
hasher.memory_cost = old_m
hasher.time_cost = old_t
hasher.parallelism = old_p
def _test_argon2_upgrade(self, attr, summary_key, new_value):
hasher = get_hasher('argon2')
self.assertEqual('argon2', hasher.algorithm)
self.assertNotEqual(getattr(hasher, attr), new_value)
old_value = getattr(hasher, attr)
try:
# Generate hash with attr set to 1
setattr(hasher, attr, new_value)
encoded = make_password('letmein', hasher='argon2')
attr_value = hasher.safe_summary(encoded)[summary_key]
self.assertEqual(attr_value, new_value)
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
# No upgrade is triggered.
self.assertTrue(check_password('letmein', encoded, setter, 'argon2'))
self.assertFalse(state['upgraded'])
# Revert to the old rounds count and ...
setattr(hasher, attr, old_value)
# ... check if the password would get updated to the new count.
self.assertTrue(check_password('letmein', encoded, setter, 'argon2'))
self.assertTrue(state['upgraded'])
finally:
setattr(hasher, attr, old_value)
@override_settings(PASSWORD_HASHERS=PASSWORD_HASHERS)
class TestUtilsHashPassScrypt(SimpleTestCase):
def test_scrypt(self):
encoded = make_password('lètmein', 'seasalt', 'scrypt')
self.assertEqual(
encoded,
'scrypt$16384$seasalt$8$1$Qj3+9PPyRjSJIebHnG81TMjsqtaIGxNQG/aEB/NY'
'afTJ7tibgfYz71m0ldQESkXFRkdVCBhhY8mx7rQwite/Pw=='
)
self.assertIs(is_password_usable(encoded), True)
self.assertIs(check_password('lètmein', encoded), True)
self.assertIs(check_password('lètmeinz', encoded), False)
self.assertEqual(identify_hasher(encoded).algorithm, "scrypt")
# Blank passwords.
blank_encoded = make_password('', 'seasalt', 'scrypt')
self.assertIs(blank_encoded.startswith('scrypt$'), True)
self.assertIs(is_password_usable(blank_encoded), True)
self.assertIs(check_password('', blank_encoded), True)
self.assertIs(check_password(' ', blank_encoded), False)
def test_scrypt_decode(self):
encoded = make_password('lètmein', 'seasalt', 'scrypt')
hasher = get_hasher('scrypt')
decoded = hasher.decode(encoded)
tests = [
('block_size', hasher.block_size),
('parallelism', hasher.parallelism),
('salt', 'seasalt'),
('work_factor', hasher.work_factor),
]
for key, excepted in tests:
with self.subTest(key=key):
self.assertEqual(decoded[key], excepted)
def _test_scrypt_upgrade(self, attr, summary_key, new_value):
hasher = get_hasher('scrypt')
self.assertEqual(hasher.algorithm, 'scrypt')
self.assertNotEqual(getattr(hasher, attr), new_value)
old_value = getattr(hasher, attr)
try:
# Generate hash with attr set to the new value.
setattr(hasher, attr, new_value)
encoded = make_password('lètmein', 'seasalt', 'scrypt')
attr_value = hasher.safe_summary(encoded)[summary_key]
self.assertEqual(attr_value, new_value)
state = {'upgraded': False}
def setter(password):
state['upgraded'] = True
# No update is triggered.
self.assertIs(check_password('lètmein', encoded, setter, 'scrypt'), True)
self.assertIs(state['upgraded'], False)
# Revert to the old value.
setattr(hasher, attr, old_value)
# Password is updated.
self.assertIs(check_password('lètmein', encoded, setter, 'scrypt'), True)
self.assertIs(state['upgraded'], True)
finally:
setattr(hasher, attr, old_value)
def test_scrypt_upgrade(self):
tests = [
('work_factor', 'work factor', 2 ** 11),
('block_size', 'block size', 10),
('parallelism', 'parallelism', 2),
]
for attr, summary_key, new_value in tests:
with self.subTest(attr=attr):
self._test_scrypt_upgrade(attr, summary_key, new_value)
|
99db0d55a72fd6400f10c7ddba7f218c9ccfa759a1bfa5157c7e82e23c06ec74 | import datetime
import os
import re
import unittest
from unittest import mock
from urllib.parse import parse_qsl, urljoin, urlparse
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
try:
import pytz
except ImportError:
pytz = None
from django.contrib import admin
from django.contrib.admin import AdminSite, ModelAdmin
from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME
from django.contrib.admin.models import ADDITION, DELETION, LogEntry
from django.contrib.admin.options import TO_FIELD_VAR
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.admin.utils import quote
from django.contrib.admin.views.main import IS_POPUP_VAR
from django.contrib.auth import REDIRECT_FIELD_NAME, get_permission_codename
from django.contrib.auth.models import Group, Permission, User
from django.contrib.contenttypes.models import ContentType
from django.core import mail
from django.core.checks import Error
from django.core.files import temp as tempfile
from django.forms.utils import ErrorList
from django.template.response import TemplateResponse
from django.test import (
TestCase, modify_settings, override_settings, skipUnlessDBFeature,
)
from django.test.utils import override_script_prefix
from django.urls import NoReverseMatch, resolve, reverse
from django.utils import formats, translation
from django.utils.cache import get_max_age
from django.utils.encoding import iri_to_uri
from django.utils.html import escape
from django.utils.http import urlencode
from . import customadmin
from .admin import CityAdmin, site, site2
from .models import (
Actor, AdminOrderedAdminMethod, AdminOrderedCallable, AdminOrderedField,
AdminOrderedModelMethod, Album, Answer, Answer2, Article, BarAccount, Book,
Bookmark, Category, Chapter, ChapterXtra1, ChapterXtra2, Character, Child,
Choice, City, Collector, Color, ComplexSortedPerson, CoverLetter,
CustomArticle, CyclicOne, CyclicTwo, DooHickey, Employee, EmptyModel,
Fabric, FancyDoodad, FieldOverridePost, FilteredManager, FooAccount,
FoodDelivery, FunkyTag, Gallery, Grommet, Inquisition, Language, Link,
MainPrepopulated, Media, ModelWithStringPrimaryKey, OtherStory, Paper,
Parent, ParentWithDependentChildren, ParentWithUUIDPK, Person, Persona,
Picture, Pizza, Plot, PlotDetails, PluggableSearchPerson, Podcast, Post,
PrePopulatedPost, Promo, Question, ReadablePizza, ReadOnlyPizza,
ReadOnlyRelatedField, Recommendation, Recommender, RelatedPrepopulated,
RelatedWithUUIDPKModel, Report, Restaurant, RowLevelChangePermissionModel,
SecretHideout, Section, ShortMessage, Simple, Song, State, Story,
SuperSecretHideout, SuperVillain, Telegram, TitleTranslation, Topping,
UnchangeableObject, UndeletableObject, UnorderedObject, UserProxy, Villain,
Vodcast, Whatsit, Widget, Worker, WorkHour,
)
ERROR_MESSAGE = "Please enter the correct username and password \
for a staff account. Note that both fields may be case-sensitive."
MULTIPART_ENCTYPE = 'enctype="multipart/form-data"'
def make_aware_datetimes(dt, iana_key):
"""Makes one aware datetime for each supported time zone provider."""
yield dt.replace(tzinfo=zoneinfo.ZoneInfo(iana_key))
if pytz is not None:
yield pytz.timezone(iana_key).localize(dt, is_dst=None)
class AdminFieldExtractionMixin:
"""
Helper methods for extracting data from AdminForm.
"""
def get_admin_form_fields(self, response):
"""
Return a list of AdminFields for the AdminForm in the response.
"""
fields = []
for fieldset in response.context['adminform']:
for field_line in fieldset:
fields.extend(field_line)
return fields
def get_admin_readonly_fields(self, response):
"""
Return the readonly fields for the response's AdminForm.
"""
return [f for f in self.get_admin_form_fields(response) if f.is_readonly]
def get_admin_readonly_field(self, response, field_name):
"""
Return the readonly field for the given field_name.
"""
admin_readonly_fields = self.get_admin_readonly_fields(response)
for field in admin_readonly_fields:
if field.field['name'] == field_name:
return field
@override_settings(ROOT_URLCONF='admin_views.urls', USE_I18N=True, LANGUAGE_CODE='en')
class AdminViewBasicTestCase(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 1',
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>',
date=datetime.datetime(2000, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 2',
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.color1 = Color.objects.create(value='Red', warm=True)
cls.color2 = Color.objects.create(value='Orange', warm=True)
cls.color3 = Color.objects.create(value='Blue', warm=False)
cls.color4 = Color.objects.create(value='Green', warm=False)
cls.fab1 = Fabric.objects.create(surface='x')
cls.fab2 = Fabric.objects.create(surface='y')
cls.fab3 = Fabric.objects.create(surface='plain')
cls.b1 = Book.objects.create(name='Book 1')
cls.b2 = Book.objects.create(name='Book 2')
cls.pro1 = Promo.objects.create(name='Promo 1', book=cls.b1)
cls.pro1 = Promo.objects.create(name='Promo 2', book=cls.b2)
cls.chap1 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b1)
cls.chap2 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b2)
cls.chap4 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b2)
cls.cx1 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='ChapterXtra1 1')
cls.cx2 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='ChapterXtra1 2')
Actor.objects.create(name='Palin', age=27)
# Post data for edit inline
cls.inline_post_data = {
"name": "Test section",
# inline data
"article_set-TOTAL_FORMS": "6",
"article_set-INITIAL_FORMS": "3",
"article_set-MAX_NUM_FORMS": "0",
"article_set-0-id": cls.a1.pk,
# there is no title in database, give one here or formset will fail.
"article_set-0-title": "Norske bostaver æøå skaper problemer",
"article_set-0-content": "<p>Middle content</p>",
"article_set-0-date_0": "2008-03-18",
"article_set-0-date_1": "11:54:58",
"article_set-0-section": cls.s1.pk,
"article_set-1-id": cls.a2.pk,
"article_set-1-title": "Need a title.",
"article_set-1-content": "<p>Oldest content</p>",
"article_set-1-date_0": "2000-03-18",
"article_set-1-date_1": "11:54:58",
"article_set-2-id": cls.a3.pk,
"article_set-2-title": "Need a title.",
"article_set-2-content": "<p>Newest content</p>",
"article_set-2-date_0": "2009-03-18",
"article_set-2-date_1": "11:54:58",
"article_set-3-id": "",
"article_set-3-title": "",
"article_set-3-content": "",
"article_set-3-date_0": "",
"article_set-3-date_1": "",
"article_set-4-id": "",
"article_set-4-title": "",
"article_set-4-content": "",
"article_set-4-date_0": "",
"article_set-4-date_1": "",
"article_set-5-id": "",
"article_set-5-title": "",
"article_set-5-content": "",
"article_set-5-date_0": "",
"article_set-5-date_1": "",
}
def setUp(self):
self.client.force_login(self.superuser)
def assertContentBefore(self, response, text1, text2, failing_msg=None):
"""
Testing utility asserting that text1 appears before text2 in response
content.
"""
self.assertEqual(response.status_code, 200)
self.assertLess(
response.content.index(text1.encode()),
response.content.index(text2.encode()),
(failing_msg or '') + '\nResponse:\n' + response.content.decode(response.charset)
)
class AdminViewBasicTest(AdminViewBasicTestCase):
def test_trailing_slash_required(self):
"""
If you leave off the trailing slash, app should redirect and add it.
"""
add_url = reverse('admin:admin_views_article_add')
response = self.client.get(add_url[:-1])
self.assertRedirects(response, add_url, status_code=301)
def test_basic_add_GET(self):
"""
A smoke test to ensure GET on the add_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_add_with_GET_args(self):
response = self.client.get(reverse('admin:admin_views_section_add'), {'name': 'My Section'})
self.assertContains(
response, 'value="My Section"',
msg_prefix="Couldn't find an input with the right value in the response"
)
def test_basic_edit_GET(self):
"""
A smoke test to ensure GET on the change_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_basic_edit_GET_string_PK(self):
"""
GET on the change_view (when passing a string as the PK argument for a
model with an integer PK field) redirects to the index page with a
message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(quote("abc/<b>"),)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['section with ID “abc/<b>” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_edit_GET_old_url_redirect(self):
"""
The change URL changed in Django 1.9, but the old one still redirects.
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,)).replace('change/', '')
)
self.assertRedirects(response, reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
def test_basic_inheritance_GET_string_PK(self):
"""
GET on the change_view (for inherited models) redirects to the index
page with a message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_supervillain_change', args=('abc',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['super villain with ID “abc” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_add_POST(self):
"""
A smoke test to ensure POST on add_view works.
"""
post_data = {
"name": "Another Section",
# inline data
"article_set-TOTAL_FORMS": "3",
"article_set-INITIAL_FORMS": "0",
"article_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_section_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_popup_add_POST(self):
"""
Ensure http response from a popup is properly escaped.
"""
post_data = {
IS_POPUP_VAR: '1',
'title': 'title with a new\nline',
'content': 'some content',
'date_0': '2010-09-10',
'date_1': '14:55:39',
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data)
self.assertContains(response, 'title with a new\\nline')
def test_basic_edit_POST(self):
"""
A smoke test to ensure POST on edit_view works.
"""
url = reverse('admin:admin_views_section_change', args=(self.s1.pk,))
response = self.client.post(url, self.inline_post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as(self):
"""
Test "save as".
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-3-section": "1",
"article_set-4-section": "1",
"article_set-5-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as_delete_inline(self):
"""
Should be able to "Save as new" while also deleting an inline.
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-2-DELETE": "1",
"article_set-3-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302)
# started with 3 articles, one was deleted.
self.assertEqual(Section.objects.latest('id').article_set.count(), 2)
def test_change_list_column_field_classes(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
# callables display the callable name.
self.assertContains(response, 'column-callable_year')
self.assertContains(response, 'field-callable_year')
# lambdas display as "lambda" + index that they appear in list_display.
self.assertContains(response, 'column-lambda8')
self.assertContains(response, 'field-lambda8')
def test_change_list_sorting_callable(self):
"""
Ensure we can sort on a list_display field that is a callable
(column 2 is callable_year in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 2})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on callable are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on callable are out of order."
)
def test_change_list_sorting_property(self):
"""
Sort on a list_display field that is a property (column 10 is
a property in Article model).
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 10})
self.assertContentBefore(
response,
'Oldest content',
'Middle content',
'Results of sorting on property are out of order.',
)
self.assertContentBefore(
response,
'Middle content',
'Newest content',
'Results of sorting on property are out of order.',
)
def test_change_list_sorting_callable_query_expression(self):
"""Query expressions may be used for admin_order_field."""
tests = [
('order_by_expression', 9),
('order_by_f_expression', 12),
('order_by_orderby_expression', 13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_callable_query_expression_reverse(self):
tests = [
('order_by_expression', -9),
('order_by_f_expression', -12),
('order_by_orderby_expression', -13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Newest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_model(self):
"""
Ensure we can sort on a list_display field that is a Model method
(column 3 is 'model_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-3'})
self.assertContentBefore(
response, 'Newest content', 'Middle content',
"Results of sorting on Model method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
"Results of sorting on Model method are out of order."
)
def test_change_list_sorting_model_admin(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin method
(column 4 is 'modeladmin_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '4'})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_model_admin_reverse(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin
method in reverse order (i.e. admin_order_field uses the '-' prefix)
(column 6 is 'model_year_reverse' in ArticleAdmin)
"""
td = '<td class="field-model_property_year">%s</td>'
td_2000, td_2008, td_2009 = td % 2000, td % 2008, td % 2009
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '6'})
self.assertContentBefore(
response, td_2009, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2000,
"Results of sorting on ModelAdmin method are out of order."
)
# Let's make sure the ordering is right and that we don't get a
# FieldError when we change to descending order
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-6'})
self.assertContentBefore(
response, td_2000, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2009,
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_multiple(self):
p1 = Person.objects.create(name="Chris", gender=1, alive=True)
p2 = Person.objects.create(name="Chris", gender=2, alive=True)
p3 = Person.objects.create(name="Bob", gender=1, alive=True)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
# Sort by name, gender
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '1.2'})
self.assertContentBefore(response, link3, link1)
self.assertContentBefore(response, link1, link2)
# Sort by gender descending, name
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '-2.1'})
self.assertContentBefore(response, link2, link3)
self.assertContentBefore(response, link3, link1)
def test_change_list_sorting_preserve_queryset_ordering(self):
"""
If no ordering is defined in `ModelAdmin.ordering` or in the query
string, then the underlying order of the queryset should not be
changed, even if it is defined in `Modeladmin.get_queryset()`.
Refs #11868, #7309.
"""
p1 = Person.objects.create(name="Amy", gender=1, alive=True, age=80)
p2 = Person.objects.create(name="Bob", gender=1, alive=True, age=70)
p3 = Person.objects.create(name="Chris", gender=2, alive=False, age=60)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
response = self.client.get(reverse('admin:admin_views_person_changelist'), {})
self.assertContentBefore(response, link3, link2)
self.assertContentBefore(response, link2, link1)
def test_change_list_sorting_model_meta(self):
# Test ordering on Model Meta is respected
l1 = Language.objects.create(iso='ur', name='Urdu')
l2 = Language.objects.create(iso='ar', name='Arabic')
link1 = reverse('admin:admin_views_language_change', args=(quote(l1.pk),))
link2 = reverse('admin:admin_views_language_change', args=(quote(l2.pk),))
response = self.client.get(reverse('admin:admin_views_language_changelist'), {})
self.assertContentBefore(response, link2, link1)
# Test we can override with query string
response = self.client.get(reverse('admin:admin_views_language_changelist'), {'o': '-1'})
self.assertContentBefore(response, link1, link2)
def test_change_list_sorting_override_model_admin(self):
# Test ordering on Model Admin is respected, and overrides Model Meta
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_podcast_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
def test_multiple_sort_same_field(self):
# The changelist displays the correct columns if two columns correspond
# to the same ordering field.
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(quote(p1.pk),))
link2 = reverse('admin:admin_views_podcast_change', args=(quote(p2.pk),))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
p1 = ComplexSortedPerson.objects.create(name="Bob", age=10)
p2 = ComplexSortedPerson.objects.create(name="Amy", age=20)
link1 = reverse('admin:admin_views_complexsortedperson_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_complexsortedperson_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_complexsortedperson_changelist'), {})
# Should have 5 columns (including action checkbox col)
self.assertContains(response, '<th scope="col"', count=5)
self.assertContains(response, 'Name')
self.assertContains(response, 'Colored name')
# Check order
self.assertContentBefore(response, 'Name', 'Colored name')
# Check sorting - should be by name
self.assertContentBefore(response, link2, link1)
def test_sort_indicators_admin_order(self):
"""
The admin shows default sort indicators for all kinds of 'ordering'
fields: field names, method on the model admin and model itself, and
other callables. See #17252.
"""
models = [(AdminOrderedField, 'adminorderedfield'),
(AdminOrderedModelMethod, 'adminorderedmodelmethod'),
(AdminOrderedAdminMethod, 'adminorderedadminmethod'),
(AdminOrderedCallable, 'adminorderedcallable')]
for model, url in models:
model.objects.create(stuff='The Last Item', order=3)
model.objects.create(stuff='The First Item', order=1)
model.objects.create(stuff='The Middle Item', order=2)
response = self.client.get(reverse('admin:admin_views_%s_changelist' % url), {})
# Should have 3 columns including action checkbox col.
self.assertContains(response, '<th scope="col"', count=3, msg_prefix=url)
# Check if the correct column was selected. 2 is the index of the
# 'order' column in the model admin's 'list_display' with 0 being
# the implicit 'action_checkbox' and 1 being the column 'stuff'.
self.assertEqual(response.context['cl'].get_ordering_field_columns(), {2: 'asc'})
# Check order of records.
self.assertContentBefore(response, 'The First Item', 'The Middle Item')
self.assertContentBefore(response, 'The Middle Item', 'The Last Item')
def test_has_related_field_in_list_display_fk(self):
"""Joins shouldn't be performed for <FK>_id fields in list display."""
state = State.objects.create(name='Karnataka')
City.objects.create(state=state, name='Bangalore')
response = self.client.get(reverse('admin:admin_views_city_changelist'), {})
response.context['cl'].list_display = ['id', 'name', 'state']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['id', 'name', 'state_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_has_related_field_in_list_display_o2o(self):
"""Joins shouldn't be performed for <O2O>_id fields in list display."""
media = Media.objects.create(name='Foo')
Vodcast.objects.create(media=media)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'), {})
response.context['cl'].list_display = ['media']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['media_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_limited_filter(self):
"""Ensure admin changelist filters do not contain objects excluded via limit_choices_to.
This also tests relation-spanning filters (e.g. 'color__value').
"""
response = self.client.get(reverse('admin:admin_views_thing_changelist'))
self.assertContains(
response, '<div id="changelist-filter">',
msg_prefix="Expected filter not found in changelist view"
)
self.assertNotContains(
response, '<a href="?color__id__exact=3">Blue</a>',
msg_prefix="Changelist filter not correctly limited by limit_choices_to"
)
def test_relation_spanning_filters(self):
changelist_url = reverse('admin:admin_views_chapterxtra1_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '<div id="changelist-filter">')
filters = {
'chap__id__exact': {
'values': [c.id for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.id == value,
},
'chap__title': {
'values': [c.title for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.title == value,
},
'chap__book__id__exact': {
'values': [b.id for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.id == value,
},
'chap__book__name': {
'values': [b.name for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.name == value,
},
'chap__book__promo__id__exact': {
'values': [p.id for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(id=value).exists(),
},
'chap__book__promo__name': {
'values': [p.name for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(name=value).exists(),
},
# A forward relation (book) after a reverse relation (promo).
'guest_author__promo__book__id__exact': {
'values': [p.id for p in Book.objects.all()],
'test': lambda obj, value: obj.guest_author.promo_set.filter(book=value).exists(),
},
}
for filter_path, params in filters.items():
for value in params['values']:
query_string = urlencode({filter_path: value})
# ensure filter link exists
self.assertContains(response, '<a href="?%s"' % query_string)
# ensure link works
filtered_response = self.client.get('%s?%s' % (changelist_url, query_string))
self.assertEqual(filtered_response.status_code, 200)
# ensure changelist contains only valid objects
for obj in filtered_response.context['cl'].queryset.all():
self.assertTrue(params['test'](obj, value))
def test_incorrect_lookup_parameters(self):
"""Ensure incorrect lookup parameters are handled gracefully."""
changelist_url = reverse('admin:admin_views_thing_changelist')
response = self.client.get(changelist_url, {'notarealfield': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Spanning relationships through a nonexistent related object (Refs #16716)
response = self.client.get(changelist_url, {'notarealfield__whatever': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
response = self.client.get(changelist_url, {'color__id__exact': 'StringNotInteger!'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Regression test for #18530
response = self.client.get(changelist_url, {'pub_date__gte': 'foo'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
def test_isnull_lookups(self):
"""Ensure is_null is handled correctly."""
Article.objects.create(title="I Could Go Anywhere", content="Versatile", date=datetime.datetime.now())
changelist_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '4 articles')
response = self.client.get(changelist_url, {'section__isnull': 'false'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': '0'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': 'true'})
self.assertContains(response, '1 article')
response = self.client.get(changelist_url, {'section__isnull': '1'})
self.assertContains(response, '1 article')
def test_logout_and_password_change_URLs(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, '<a href="%s">' % reverse('admin:logout'))
self.assertContains(response, '<a href="%s">' % reverse('admin:password_change'))
def test_named_group_field_choices_change_list(self):
"""
Ensures the admin changelist shows correct values in the relevant column
for rows corresponding to instances of a model in which a named group
has been used in the choices option of a field.
"""
link1 = reverse('admin:admin_views_fabric_change', args=(self.fab1.pk,))
link2 = reverse('admin:admin_views_fabric_change', args=(self.fab2.pk,))
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist table isn't showing the right human-readable values "
"set by a model field 'choices' option named group."
)
self.assertContains(response, '<a href="%s">Horizontal</a>' % link1, msg_prefix=fail_msg, html=True)
self.assertContains(response, '<a href="%s">Vertical</a>' % link2, msg_prefix=fail_msg, html=True)
def test_named_group_field_choices_filter(self):
"""
Ensures the filter UI shows correctly when at least one named group has
been used in the choices option of a model field.
"""
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist filter isn't showing options contained inside a model "
"field 'choices' option named group."
)
self.assertContains(response, '<div id="changelist-filter">')
self.assertContains(
response, '<a href="?surface__exact=x" title="Horizontal">Horizontal</a>',
msg_prefix=fail_msg, html=True
)
self.assertContains(
response, '<a href="?surface__exact=y" title="Vertical">Vertical</a>',
msg_prefix=fail_msg, html=True
)
def test_change_list_null_boolean_display(self):
Post.objects.create(public=None)
response = self.client.get(reverse('admin:admin_views_post_changelist'))
self.assertContains(response, 'icon-unknown.svg')
def test_display_decorator_with_boolean_and_empty_value(self):
msg = (
'The boolean and empty_value arguments to the @display decorator '
'are mutually exclusive.'
)
with self.assertRaisesMessage(ValueError, msg):
class BookAdmin(admin.ModelAdmin):
@admin.display(boolean=True, empty_value='(Missing)')
def is_published(self, obj):
return obj.publish_date is not None
def test_i18n_language_non_english_default(self):
"""
Check if the JavaScript i18n view returns an empty language catalog
if the default language is non-English but the selected language
is English. See #13388 and #3594 for more details.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('en-us'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, 'Choisir une heure')
def test_i18n_language_non_english_fallback(self):
"""
Makes sure that the fallback language is still working properly
in cases where the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertContains(response, 'Choisir une heure')
def test_jsi18n_with_context(self):
response = self.client.get(reverse('admin-extra-context:jsi18n'))
self.assertEqual(response.status_code, 200)
def test_jsi18n_format_fallback(self):
"""
The JavaScript i18n view doesn't return localized date/time formats
when the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='ru'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, '%d.%m.%Y %H:%M:%S')
self.assertContains(response, '%Y-%m-%d %H:%M:%S')
def test_disallowed_filtering(self):
with self.assertLogs('django.security.DisallowedModelAdminLookup', 'ERROR'):
response = self.client.get(
"%s?owner__email__startswith=fuzzy" % reverse('admin:admin_views_album_changelist')
)
self.assertEqual(response.status_code, 400)
# Filters are allowed if explicitly included in list_filter
response = self.client.get("%s?color__value__startswith=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
response = self.client.get("%s?color__value=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
# Filters should be allowed if they involve a local field without the
# need to allow them in list_filter or date_hierarchy.
response = self.client.get("%s?age__gt=30" % reverse('admin:admin_views_person_changelist'))
self.assertEqual(response.status_code, 200)
e1 = Employee.objects.create(name='Anonymous', gender=1, age=22, alive=True, code='123')
e2 = Employee.objects.create(name='Visitor', gender=2, age=19, alive=True, code='124')
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e1)
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e2)
response = self.client.get(reverse('admin:admin_views_workhour_changelist'))
self.assertContains(response, 'employee__person_ptr__exact')
response = self.client.get("%s?employee__person_ptr__exact=%d" % (
reverse('admin:admin_views_workhour_changelist'), e1.pk)
)
self.assertEqual(response.status_code, 200)
def test_disallowed_to_field(self):
url = reverse('admin:admin_views_section_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'missing_field'})
self.assertEqual(response.status_code, 400)
# Specifying a field that is not referred by any other model registered
# to this admin site should raise an exception.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(reverse('admin:admin_views_section_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
# #23839 - Primary key should always be allowed, even if the referenced model isn't registered.
response = self.client.get(reverse('admin:admin_views_notreferenced_changelist'), {TO_FIELD_VAR: 'id'})
self.assertEqual(response.status_code, 200)
# #23915 - Specifying a field referenced by another model though a m2m should be allowed.
response = self.client.get(reverse('admin:admin_views_recipe_changelist'), {TO_FIELD_VAR: 'rname'})
self.assertEqual(response.status_code, 200)
# #23604, #23915 - Specifying a field referenced through a reverse m2m relationship should be allowed.
response = self.client.get(reverse('admin:admin_views_ingredient_changelist'), {TO_FIELD_VAR: 'iname'})
self.assertEqual(response.status_code, 200)
# #23329 - Specifying a field that is not referred by any other model directly registered
# to this admin site but registered through inheritance should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyparent_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #23431 - Specifying a field that is only referred to by a inline of a registered
# model should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyinline_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #25622 - Specifying a field of a model only referred by a generic
# relation should raise DisallowedModelAdminToField.
url = reverse('admin:admin_views_referencedbygenrel_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'object_id'})
self.assertEqual(response.status_code, 400)
# We also want to prevent the add, change, and delete views from
# leaking a disallowed field value.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(reverse('admin:admin_views_section_add'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
section = Section.objects.create()
url = reverse('admin:admin_views_section_change', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
url = reverse('admin:admin_views_section_delete', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
def test_allowed_filtering_15103(self):
"""
Regressions test for ticket 15103 - filtering on fields defined in a
ForeignKey 'limit_choices_to' should be allowed, otherwise raw_id_fields
can break.
"""
# Filters should be allowed if they are defined on a ForeignKey pointing to this model
url = "%s?leader__name=Palin&leader__age=27" % reverse('admin:admin_views_inquisition_changelist')
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
def test_popup_dismiss_related(self):
"""
Regression test for ticket 20664 - ensure the pk is properly quoted.
"""
actor = Actor.objects.create(name="Palin", age=27)
response = self.client.get("%s?%s" % (reverse('admin:admin_views_actor_changelist'), IS_POPUP_VAR))
self.assertContains(response, 'data-popup-opener="%s"' % actor.pk)
def test_hide_change_password(self):
"""
Tests if the "change password" link in the admin is hidden if the User
does not have a usable password set.
(against 9bea85795705d015cdadc82c68b99196a8554f5c)
"""
user = User.objects.get(username='super')
user.set_unusable_password()
user.save()
self.client.force_login(user)
response = self.client.get(reverse('admin:index'))
self.assertNotContains(
response, reverse('admin:password_change'),
msg_prefix='The "change password" link should not be displayed if a user does not have a usable password.'
)
def test_change_view_with_show_delete_extra_context(self):
"""
The 'show_delete' context variable in the admin's change view controls
the display of the delete button.
"""
instance = UndeletableObject.objects.create(name='foo')
response = self.client.get(reverse('admin:admin_views_undeletableobject_change', args=(instance.pk,)))
self.assertNotContains(response, 'deletelink')
def test_change_view_logs_m2m_field_changes(self):
"""Changes to ManyToManyFields are included in the object's history."""
pizza = ReadablePizza.objects.create(name='Cheese')
cheese = Topping.objects.create(name='cheese')
post_data = {'name': pizza.name, 'toppings': [cheese.pk]}
response = self.client.post(reverse('admin:admin_views_readablepizza_change', args=(pizza.pk,)), post_data)
self.assertRedirects(response, reverse('admin:admin_views_readablepizza_changelist'))
pizza_ctype = ContentType.objects.get_for_model(ReadablePizza, for_concrete_model=False)
log = LogEntry.objects.filter(content_type=pizza_ctype, object_id=pizza.pk).first()
self.assertEqual(log.get_change_message(), 'Changed Toppings.')
def test_allows_attributeerror_to_bubble_up(self):
"""
AttributeErrors are allowed to bubble when raised inside a change list
view. Requires a model to be created so there's something to display.
Refs: #16655, #18593, and #18747
"""
Simple.objects.create()
with self.assertRaises(AttributeError):
self.client.get(reverse('admin:admin_views_simple_changelist'))
def test_changelist_with_no_change_url(self):
"""
ModelAdmin.changelist_view shouldn't result in a NoReverseMatch if url
for change_view is removed from get_urls (#20934).
"""
o = UnchangeableObject.objects.create()
response = self.client.get(reverse('admin:admin_views_unchangeableobject_changelist'))
# Check the format of the shown object -- shouldn't contain a change link
self.assertContains(response, '<th class="field-__str__">%s</th>' % o, html=True)
def test_invalid_appindex_url(self):
"""
#21056 -- URL reversing shouldn't work for nonexistent apps.
"""
good_url = '/test_admin/admin/admin_views/'
confirm_good_url = reverse('admin:app_list',
kwargs={'app_label': 'admin_views'})
self.assertEqual(good_url, confirm_good_url)
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', kwargs={'app_label': 'this_should_fail'})
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', args=('admin_views2',))
def test_resolve_admin_views(self):
index_match = resolve('/test_admin/admin4/')
list_match = resolve('/test_admin/admin4/auth/user/')
self.assertIs(index_match.func.admin_site, customadmin.simple_site)
self.assertIsInstance(list_match.func.model_admin, customadmin.CustomPwdTemplateUserAdmin)
def test_adminsite_display_site_url(self):
"""
#13749 - Admin should display link to front-end site 'View site'
"""
url = reverse('admin:index')
response = self.client.get(url)
self.assertEqual(response.context['site_url'], '/my-site-url/')
self.assertContains(response, '<a href="/my-site-url/">View site</a>')
def test_date_hierarchy_empty_queryset(self):
self.assertIs(Question.objects.exists(), False)
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertEqual(response.status_code, 200)
@override_settings(TIME_ZONE='America/Sao_Paulo', USE_TZ=True)
def test_date_hierarchy_timezone_dst(self):
# This datetime doesn't exist in this timezone due to DST.
for date in make_aware_datetimes(datetime.datetime(2016, 10, 16, 15), 'America/Sao_Paulo'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=16')
self.assertContains(response, 'question__expires__month=10')
self.assertContains(response, 'question__expires__year=2016')
@override_settings(TIME_ZONE='America/Los_Angeles', USE_TZ=True)
def test_date_hierarchy_local_date_differ_from_utc(self):
# This datetime is 2017-01-01 in UTC.
for date in make_aware_datetimes(datetime.datetime(2016, 12, 31, 16), 'America/Los_Angeles'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=31')
self.assertContains(response, 'question__expires__month=12')
self.assertContains(response, 'question__expires__year=2016')
def test_sortable_by_columns_subset(self):
expected_sortable_fields = ('date', 'callable_year')
expected_not_sortable_fields = (
'content', 'model_year', 'modeladmin_year', 'model_year_reversed',
'section',
)
response = self.client.get(reverse('admin6:admin_views_article_changelist'))
for field_name in expected_sortable_fields:
self.assertContains(response, '<th scope="col" class="sortable column-%s">' % field_name)
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
def test_get_sortable_by_columns_subset(self):
response = self.client.get(reverse('admin6:admin_views_actor_changelist'))
self.assertContains(response, '<th scope="col" class="sortable column-age">')
self.assertContains(response, '<th scope="col" class="column-name">')
def test_sortable_by_no_column(self):
expected_not_sortable_fields = ('title', 'book')
response = self.client.get(reverse('admin6:admin_views_chapter_changelist'))
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_get_sortable_by_no_column(self):
response = self.client.get(reverse('admin6:admin_views_color_changelist'))
self.assertContains(response, '<th scope="col" class="column-value">')
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_app_index_context(self):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(
response,
'<title>Admin_Views administration | Django site admin</title>',
)
self.assertEqual(response.context['title'], 'Admin_Views administration')
self.assertEqual(response.context['app_label'], 'admin_views')
def test_change_view_subtitle_per_object(self):
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_view_subtitle_per_object(self):
viewuser = User.objects.create_user(
username='viewuser', password='secret', is_staff=True,
)
viewuser.user_permissions.add(
get_perm(Article, get_permission_codename('view', Article._meta)),
)
self.client.force_login(viewuser)
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_formset_kwargs_can_be_overridden(self):
response = self.client.get(reverse('admin:admin_views_city_add'))
self.assertContains(response, 'overridden_name')
def test_render_views_no_subtitle(self):
tests = [
reverse('admin:index'),
reverse('admin:app_list', args=('admin_views',)),
reverse('admin:admin_views_article_delete', args=(self.a1.pk,)),
reverse('admin:admin_views_article_history', args=(self.a1.pk,)),
]
for url in tests:
with self.subTest(url=url):
with self.assertNoLogs('django.template', 'DEBUG'):
self.client.get(url)
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
# Put this app's and the shared tests templates dirs in DIRS to take precedence
# over the admin's templates dir.
'DIRS': [
os.path.join(os.path.dirname(__file__), 'templates'),
os.path.join(os.path.dirname(os.path.dirname(__file__)), 'templates'),
],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}])
class AdminCustomTemplateTests(AdminViewBasicTestCase):
def test_custom_model_admin_templates(self):
# Test custom change list template with custom extra context
response = self.client.get(reverse('admin:admin_views_customarticle_changelist'))
self.assertContains(response, "var hello = 'Hello!';")
self.assertTemplateUsed(response, 'custom_admin/change_list.html')
# Test custom add form template
response = self.client.get(reverse('admin:admin_views_customarticle_add'))
self.assertTemplateUsed(response, 'custom_admin/add_form.html')
# Add an article so we can test delete, change, and history views
post = self.client.post(reverse('admin:admin_views_customarticle_add'), {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39'
})
self.assertRedirects(post, reverse('admin:admin_views_customarticle_changelist'))
self.assertEqual(CustomArticle.objects.all().count(), 1)
article_pk = CustomArticle.objects.all()[0].pk
# Test custom delete, change, and object history templates
# Test custom change form template
response = self.client.get(reverse('admin:admin_views_customarticle_change', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/change_form.html')
response = self.client.get(reverse('admin:admin_views_customarticle_delete', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/delete_confirmation.html')
response = self.client.post(reverse('admin:admin_views_customarticle_changelist'), data={
'index': 0,
'action': ['delete_selected'],
'_selected_action': ['1'],
})
self.assertTemplateUsed(response, 'custom_admin/delete_selected_confirmation.html')
response = self.client.get(reverse('admin:admin_views_customarticle_history', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/object_history.html')
# A custom popup response template may be specified by
# ModelAdmin.popup_response_template.
response = self.client.post(reverse('admin:admin_views_customarticle_add') + '?%s=1' % IS_POPUP_VAR, {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39',
IS_POPUP_VAR: '1'
})
self.assertEqual(response.template_name, 'custom_admin/popup_response.html')
def test_extended_bodyclass_template_change_form(self):
"""
The admin/change_form.html template uses block.super in the
bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_change_password_template(self):
user = User.objects.get(username='super')
response = self.client.get(reverse('admin:auth_user_password_change', args=(user.id,)))
# The auth/user/change_password.html template uses super in the
# bodyclass block.
self.assertContains(response, 'bodyclass_consistency_check ')
# When a site has multiple passwords in the browser's password manager,
# a browser pop up asks which user the new password is for. To prevent
# this, the username is added to the change password form.
self.assertContains(response, '<input type="text" name="username" value="super" class="hidden">')
def test_extended_bodyclass_template_index(self):
"""
The admin/index.html template uses block.super in the bodyclass block.
"""
response = self.client.get(reverse('admin:index'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_change_list(self):
"""
The admin/change_list.html' template uses block.super
in the bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_login(self):
"""
The admin/login.html template uses block.super in the
bodyclass block.
"""
self.client.logout()
response = self.client.get(reverse('admin:login'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_confirmation(self):
"""
The admin/delete_confirmation.html template uses
block.super in the bodyclass block.
"""
group = Group.objects.create(name="foogroup")
response = self.client.get(reverse('admin:auth_group_delete', args=(group.id,)))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_selected_confirmation(self):
"""
The admin/delete_selected_confirmation.html template uses
block.super in bodyclass block.
"""
group = Group.objects.create(name="foogroup")
post_data = {
'action': 'delete_selected',
'selected_across': '0',
'index': '0',
'_selected_action': group.id
}
response = self.client.post(reverse('admin:auth_group_changelist'), post_data)
self.assertEqual(response.context['site_header'], 'Django administration')
self.assertContains(response, 'bodyclass_consistency_check ')
def test_filter_with_custom_template(self):
"""
A custom template can be used to render an admin filter.
"""
response = self.client.get(reverse('admin:admin_views_color2_changelist'))
self.assertTemplateUsed(response, 'custom_filter_template.html')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewFormUrlTest(TestCase):
current_app = "admin3"
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_change_form_URL_has_correct_value(self):
"""
change_view has form_url in response.context
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,), current_app=self.current_app)
)
self.assertIn('form_url', response.context, msg='form_url not present in response.context')
self.assertEqual(response.context['form_url'], 'pony')
def test_initial_data_can_be_overridden(self):
"""
The behavior for setting initial form data can be overridden in the
ModelAdmin class. Usually, the initial value is set via the GET params.
"""
response = self.client.get(
reverse('admin:admin_views_restaurant_add', current_app=self.current_app),
{'name': 'test_value'}
)
# this would be the usual behaviour
self.assertNotContains(response, 'value="test_value"')
# this is the overridden behaviour
self.assertContains(response, 'value="overridden_value"')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminJavaScriptTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_js_minified_only_if_debug_is_false(self):
"""
The minified versions of the JS files are only used when DEBUG is False.
"""
with override_settings(DEBUG=False):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertNotContains(response, 'vendor/jquery/jquery.js')
self.assertContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
with override_settings(DEBUG=True):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'vendor/jquery/jquery.js')
self.assertNotContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
@override_settings(ROOT_URLCONF='admin_views.urls')
class SaveAsTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_as_duplication(self):
"""'save as' creates a new person"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
new_person = Person.objects.latest('id')
self.assertRedirects(response, reverse('admin:admin_views_person_change', args=(new_person.pk,)))
def test_save_as_continue_false(self):
"""
Saving a new object using "Save as new" redirects to the changelist
instead of the change view when ModelAdmin.save_as_continue=False.
"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
url = reverse('admin:admin_views_person_change', args=(self.per1.pk,), current_app=site2.name)
response = self.client.post(url, post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
self.assertRedirects(response, reverse('admin:admin_views_person_changelist', current_app=site2.name))
def test_save_as_new_with_validation_errors(self):
"""
When you click "Save as new" and have a validation error,
you only see the "Save as new" button and not the other save buttons,
and that only the "Save as" button is visible.
"""
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), {
'_saveasnew': '',
'gender': 'invalid',
'_addanother': 'fail',
})
self.assertContains(response, 'Please correct the errors below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_validation_errors_with_inlines(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': 'Child',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': '_invalid',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_inlines_with_validation_errors(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': '_invalid',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': 'Father',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
@override_settings(ROOT_URLCONF='admin_views.urls')
class CustomModelAdminTest(AdminViewBasicTestCase):
def test_custom_admin_site_login_form(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
login = self.client.post(reverse('admin2:login'), {
REDIRECT_FIELD_NAME: reverse('admin2:index'),
'username': 'customform',
'password': 'secret',
}, follow=True)
self.assertIsInstance(login, TemplateResponse)
self.assertContains(login, 'custom form error')
self.assertContains(login, 'path/to/media.css')
def test_custom_admin_site_login_template(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/login.html')
self.assertContains(response, 'Hello from a custom login template')
def test_custom_admin_site_logout_template(self):
response = self.client.get(reverse('admin2:logout'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/logout.html')
self.assertContains(response, 'Hello from a custom logout template')
def test_custom_admin_site_index_view_and_template(self):
response = self.client.get(reverse('admin2:index'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/index.html')
self.assertContains(response, 'Hello from a custom index template *bar*')
def test_custom_admin_site_app_index_view_and_template(self):
response = self.client.get(reverse('admin2:app_list', args=('admin_views',)))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/app_index.html')
self.assertContains(response, 'Hello from a custom app_index template')
def test_custom_admin_site_password_change_template(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'Hello from a custom password change form template')
def test_custom_admin_site_password_change_with_extra_context(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'eggs')
def test_custom_admin_site_password_change_done_template(self):
response = self.client.get(reverse('admin2:password_change_done'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_done.html')
self.assertContains(response, 'Hello from a custom password change done template')
def test_custom_admin_site_view(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin2:my_view'))
self.assertEqual(response.content, b"Django is a magical pony!")
def test_pwd_change_custom_template(self):
self.client.force_login(self.superuser)
su = User.objects.get(username='super')
response = self.client.get(reverse('admin4:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 200)
def get_perm(Model, codename):
"""Return the permission object, for the Model"""
ct = ContentType.objects.get_for_model(Model, for_concrete_model=False)
return Permission.objects.get(content_type=ct, codename=codename)
@override_settings(
ROOT_URLCONF='admin_views.urls',
# Test with the admin's documented list of required context processors.
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewPermissionsTest(TestCase):
"""Tests for Admin Views Permissions."""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.nostaffuser = User.objects.create_user(username='nostaff', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1,
another_section=cls.s1,
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
# Setup permissions, for our users who can add, change, and delete.
opts = Article._meta
# User who can view Articles
cls.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('view', opts)))
# User who can add Articles
cls.adduser.user_permissions.add(get_perm(Article, get_permission_codename('add', opts)))
# User who can change Articles
cls.changeuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
cls.nostaffuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
# User who can delete Articles
cls.deleteuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', opts)))
cls.deleteuser.user_permissions.add(get_perm(Section, get_permission_codename('delete', Section._meta)))
# login POST dicts
cls.index_url = reverse('admin:index')
cls.super_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'super',
'password': 'secret',
}
cls.super_email_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'secret',
}
cls.super_email_bad_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'notsecret',
}
cls.adduser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'adduser',
'password': 'secret',
}
cls.changeuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'changeuser',
'password': 'secret',
}
cls.deleteuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'deleteuser',
'password': 'secret',
}
cls.nostaff_login = {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'nostaff',
'password': 'secret',
}
cls.joepublic_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'joepublic',
'password': 'secret',
}
cls.viewuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'viewuser',
'password': 'secret',
}
cls.no_username_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'password': 'secret',
}
def test_login(self):
"""
Make sure only staff members can log in.
Successful posts to the login page will redirect to the original url.
Unsuccessful attempts will continue to render the login page with
a 200 status code.
"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
# Super User
response = self.client.get(self.index_url)
self.assertRedirects(response, login_url)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Test if user enters email address
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# only correct passwords get a username hint
login = self.client.post(login_url, self.super_email_bad_login)
self.assertContains(login, ERROR_MESSAGE)
new_user = User(username='jondoe', password='secret', email='[email protected]')
new_user.save()
# check to ensure if there are multiple email addresses a user doesn't get a 500
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# View User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.viewuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Add User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.adduser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Change User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.changeuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Delete User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.deleteuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Regular User should not be able to login.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Requests without username should not return 500 errors.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.no_username_login)
self.assertEqual(login.status_code, 200)
self.assertFormError(login, 'form', 'username', ['This field is required.'])
def test_login_redirect_for_direct_get(self):
"""
Login redirect should be to the admin index page when going directly to
/admin/login/.
"""
response = self.client.get(reverse('admin:login'))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context[REDIRECT_FIELD_NAME], reverse('admin:index'))
def test_login_has_permission(self):
# Regular User should not be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.joepublic_login)
self.assertContains(login, 'permission denied')
# User with permissions should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.nostaff_login)
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
# Staff should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'deleteuser',
'password': 'secret',
})
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
def test_login_successfully_redirects_to_original_URL(self):
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
query_string = 'the-answer=42'
redirect_url = '%s?%s' % (self.index_url, query_string)
new_next = {REDIRECT_FIELD_NAME: redirect_url}
post_data = self.super_login.copy()
post_data.pop(REDIRECT_FIELD_NAME)
login = self.client.post(
'%s?%s' % (reverse('admin:login'), urlencode(new_next)),
post_data)
self.assertRedirects(login, redirect_url)
def test_double_login_is_not_allowed(self):
"""Regression test for #19327"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with non-admin user fails
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with admin user while already logged in
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
def test_login_page_notice_for_non_staff_users(self):
"""
A logged-in non-staff user trying to access the admin index should be
presented with the login page and a hint indicating that the current
user doesn't have access to it.
"""
hint_template = 'You are authenticated as {}'
# Anonymous user should not be shown the hint
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertNotContains(response, hint_template.format(''), status_code=200)
# Non-staff user should be shown the hint
self.client.force_login(self.nostaffuser)
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertContains(response, hint_template.format(self.nostaffuser.username), status_code=200)
def test_add_view(self):
"""Test add view restricts access and actually adds items."""
add_dict = {
'title': 'Døm ikke',
'content': '<p>great article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
# Change User should not have access to add articles
self.client.force_login(self.changeuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.get(reverse('admin:logout'))
# View User should not have access to add articles
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
# Now give the user permission to add but not change.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.context['title'], 'Add article')
self.assertContains(response, '<title>Add article | Django site admin</title>')
self.assertContains(response, '<input type="submit" value="Save and view" name="_continue">')
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict, follow=False)
self.assertEqual(post.status_code, 302)
self.assertEqual(Article.objects.count(), 4)
article = Article.objects.latest('pk')
response = self.client.get(reverse('admin:admin_views_article_change', args=(article.pk,)))
self.assertContains(response, '<li class="success">The article “Døm ikke” was added successfully.</li>')
article.delete()
self.client.get(reverse('admin:logout'))
# Add user may login and POST to add view, then redirect to admin root
self.client.force_login(self.adduser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
change_list_link = '› <a href="%s">Articles</a>' % reverse('admin:admin_views_article_changelist')
self.assertNotContains(
addpage, change_list_link,
msg_prefix='User restricted to add permission is given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 4)
self.assertEqual(len(mail.outbox), 2)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a created object')
self.client.get(reverse('admin:logout'))
# The addition was logged correctly
addition_log = LogEntry.objects.all()[0]
new_article = Article.objects.last()
article_ct = ContentType.objects.get_for_model(Article)
self.assertEqual(addition_log.user_id, self.adduser.pk)
self.assertEqual(addition_log.content_type_id, article_ct.pk)
self.assertEqual(addition_log.object_id, str(new_article.pk))
self.assertEqual(addition_log.object_repr, "Døm ikke")
self.assertEqual(addition_log.action_flag, ADDITION)
self.assertEqual(addition_log.get_change_message(), "Added.")
# Super can add too, but is redirected to the change list view
self.client.force_login(self.superuser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
self.assertContains(
addpage, change_list_link,
msg_prefix='Unrestricted user is not given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, reverse('admin:admin_views_article_changelist'))
self.assertEqual(Article.objects.count(), 5)
self.client.get(reverse('admin:logout'))
# 8509 - if a normal user is already logged in, it is possible
# to change user into the superuser without error
self.client.force_login(self.joepublicuser)
# Check and make sure that if user expires, data still persists
self.client.force_login(self.superuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
@mock.patch('django.contrib.admin.options.InlineModelAdmin.has_change_permission')
def test_add_view_with_view_only_inlines(self, has_change_permission):
"""User with add permission to a section but view-only for inlines."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('add', Section._meta)))
self.client.force_login(self.viewuser)
# Valid POST creates a new section.
data = {
'name': 'New obj',
'article_set-TOTAL_FORMS': 0,
'article_set-INITIAL_FORMS': 0,
}
response = self.client.post(reverse('admin:admin_views_section_add'), data)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(Section.objects.latest('id').name, data['name'])
# InlineModelAdmin.has_change_permission()'s obj argument is always
# None during object add.
self.assertEqual([obj for (request, obj), _ in has_change_permission.call_args_list], [None, None])
def test_change_view(self):
"""Change view should restrict access and allow users to edit items."""
change_dict = {
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
article_changelist_url = reverse('admin:admin_views_article_changelist')
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.status_code, 403)
response = self.client.get(article_change_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view articles but not make changes.
self.client.force_login(self.viewuser)
response = self.client.get(article_changelist_url)
self.assertContains(
response,
'<title>Select article to view | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to view</h1>')
self.assertEqual(response.context['title'], 'Select article to view')
response = self.client.get(article_change_url)
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<label>Extra form field:</label>')
self.assertContains(response, '<a href="/test_admin/admin/admin_views/article/" class="closelink">Close</a>')
self.assertEqual(response.context['title'], 'View article')
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>Middle content</p>')
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.context['title'], 'Select article to change')
self.assertContains(
response,
'<title>Select article to change | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to change</h1>')
response = self.client.get(article_change_url)
self.assertEqual(response.context['title'], 'Change article')
self.assertContains(
response,
'<title>Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
post = self.client.post(article_change_url, change_dict)
self.assertRedirects(post, article_changelist_url)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>edited article</p>')
# one error in form should produce singular error message, multiple errors plural
change_dict['title'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the error below.',
msg_prefix='Singular error message not found in response to post with one error'
)
change_dict['content'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the errors below.',
msg_prefix='Plural error message not found in response to post with multiple errors'
)
self.client.get(reverse('admin:logout'))
# Test redirection when using row-level change permissions. Refs #11513.
r1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
r2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
r3 = RowLevelChangePermissionModel.objects.create(id=3, name='odd id mult 3')
r6 = RowLevelChangePermissionModel.objects.create(id=6, name='even id mult 3')
change_url_1 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r1.pk,))
change_url_2 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r2.pk,))
change_url_3 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r3.pk,))
change_url_6 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r6.pk,))
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1)
self.assertEqual(response.status_code, 403)
response = self.client.post(change_url_1, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertEqual(response.status_code, 403)
response = self.client.get(change_url_2)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_2, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertRedirects(response, self.index_url)
response = self.client.get(change_url_3)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_3, {'name': 'changed'})
self.assertEqual(response.status_code, 403)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=3).name, 'odd id mult 3')
response = self.client.get(change_url_6)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_6, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=6).name, 'changed')
self.assertRedirects(response, self.index_url)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_1, {'name': 'changed'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertContains(response, 'login-form')
response = self.client.get(change_url_2, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_2, {'name': 'changed again'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_change_view_without_object_change_permission(self):
"""
The object should be read-only if the user has permission to view it
and change objects of that type but not to change the current object.
"""
change_url = reverse('admin9:admin_views_article_change', args=(self.a1.pk,))
self.client.force_login(self.viewuser)
response = self.client.get(change_url)
self.assertEqual(response.context['title'], 'View article')
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<a href="/test_admin/admin9/admin_views/article/" class="closelink">Close</a>')
def test_change_view_save_as_new(self):
"""
'Save as new' should raise PermissionDenied for users without the 'add'
permission.
"""
change_dict_save_as_new = {
'_saveasnew': 'Save as new',
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
# Add user can perform "Save as new".
article_count = Article.objects.count()
self.client.force_login(self.adduser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), article_count + 1)
self.client.logout()
# Change user cannot perform "Save as new" (no 'add' permission).
article_count = Article.objects.count()
self.client.force_login(self.changeuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), article_count)
# User with both add and change permissions should be redirected to the
# change page for the newly created object.
article_count = Article.objects.count()
self.client.force_login(self.superuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(Article.objects.count(), article_count + 1)
new_article = Article.objects.latest('id')
self.assertRedirects(post, reverse('admin:admin_views_article_change', args=(new_article.pk,)))
def test_change_view_with_view_only_inlines(self):
"""
User with change permission to a section but view-only for inlines.
"""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
# Valid POST changes the name.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 3,
'article_set-INITIAL_FORMS': 3
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
def test_change_view_with_view_and_add_inlines(self):
"""User has view and add permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
# Valid POST creates a new article.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-3-id': [''],
'article_set-3-title': ['A title'],
'article_set-3-content': ['Added content'],
'article_set-3-date_0': ['2008-3-18'],
'article_set-3-date_1': ['11:54:58'],
'article_set-3-section': [str(self.s1.pk)],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
self.assertEqual(Article.objects.count(), 4)
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
def test_change_view_with_view_and_delete_inlines(self):
"""User has view and delete permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
# Inline POST details are ignored without delete permission.
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 3)
# Deletion successful when delete permission is added.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', Article._meta)))
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 2)
def test_delete_view(self):
"""Delete view should restrict access and actually delete items."""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_article_delete', args=(self.a1.pk,))
# add user should not be able to delete articles
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# view user should not be able to delete articles
self.client.force_login(self.viewuser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# Delete user can delete
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 3</li>")
# test response contains link to related Article
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
response = self.client.get(delete_url)
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 1</li>")
post = self.client.post(delete_url, delete_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 2)
self.assertEqual(len(mail.outbox), 1)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a deleted object')
article_ct = ContentType.objects.get_for_model(Article)
logged = LogEntry.objects.get(content_type=article_ct, action_flag=DELETION)
self.assertEqual(logged.object_id, str(self.a1.pk))
def test_delete_view_with_no_default_permissions(self):
"""
The delete view allows users to delete collected objects without a
'delete' permission (ReadOnlyPizza.Meta.default_permissions is empty).
"""
pizza = ReadOnlyPizza.objects.create(name='Double Cheese')
delete_url = reverse('admin:admin_views_readonlypizza_delete', args=(pizza.pk,))
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertContains(response, 'admin_views/readonlypizza/%s/' % pizza.pk)
self.assertContains(response, '<h2>Summary</h2>')
self.assertContains(response, '<li>Read only pizzas: 1</li>')
post = self.client.post(delete_url, {'post': 'yes'})
self.assertRedirects(post, reverse('admin:admin_views_readonlypizza_changelist'))
self.assertEqual(ReadOnlyPizza.objects.count(), 0)
def test_delete_view_nonexistent_obj(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_article_delete', args=('nonexistent',))
response = self.client.get(url, follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “nonexistent” doesn’t exist. Perhaps it was deleted?']
)
def test_history_view(self):
"""History view should restrict access."""
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view all items
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
# Test redirection when using row-level change permissions. Refs #11513.
rl1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
rl2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 403)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_history_view_bad_url(self):
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=('foo',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “foo” doesn’t exist. Perhaps it was deleted?']
)
def test_conditionally_show_add_section_link(self):
"""
The foreign key widget should only show the "add related" button if the
user has permission to add that related item.
"""
self.client.force_login(self.adduser)
# The user can't add sections yet, so they shouldn't see the "add section" link.
url = reverse('admin:admin_views_article_add')
add_link_text = 'add_id_section'
response = self.client.get(url)
self.assertNotContains(response, add_link_text)
# Allow the user to add sections too. Now they can see the "add section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('add', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertContains(response, add_link_text)
def test_conditionally_show_change_section_link(self):
"""
The foreign key widget should only show the "change related" button if
the user has permission to change that related item.
"""
def get_change_related(response):
return response.context['adminform'].form.fields['section'].widget.can_change_related
self.client.force_login(self.adduser)
# The user can't change sections yet, so they shouldn't see the "change section" link.
url = reverse('admin:admin_views_article_add')
change_link_text = 'change_id_section'
response = self.client.get(url)
self.assertFalse(get_change_related(response))
self.assertNotContains(response, change_link_text)
# Allow the user to change sections too. Now they can see the "change section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('change', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_change_related(response))
self.assertContains(response, change_link_text)
def test_conditionally_show_delete_section_link(self):
"""
The foreign key widget should only show the "delete related" button if
the user has permission to delete that related item.
"""
def get_delete_related(response):
return response.context['adminform'].form.fields['sub_section'].widget.can_delete_related
self.client.force_login(self.adduser)
# The user can't delete sections yet, so they shouldn't see the "delete section" link.
url = reverse('admin:admin_views_article_add')
delete_link_text = 'delete_id_sub_section'
response = self.client.get(url)
self.assertFalse(get_delete_related(response))
self.assertNotContains(response, delete_link_text)
# Allow the user to delete sections too. Now they can see the "delete section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('delete', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_delete_related(response))
self.assertContains(response, delete_link_text)
def test_disabled_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_active = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_disabled_staff_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_staff = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_app_list_permissions(self):
"""
If a user has no module perms, the app list returns a 404.
"""
opts = Article._meta
change_user = User.objects.get(username='changeuser')
permission = get_perm(Article, get_permission_codename('change', opts))
self.client.force_login(self.changeuser)
# the user has no module permissions
change_user.user_permissions.remove(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 404)
# the user now has module permissions
change_user.user_permissions.add(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 200)
def test_shortcut_view_only_available_to_staff(self):
"""
Only admin users should be able to use the admin shortcut view.
"""
model_ctype = ContentType.objects.get_for_model(ModelWithStringPrimaryKey)
obj = ModelWithStringPrimaryKey.objects.create(string_pk='foo')
shortcut_url = reverse('admin:view_on_site', args=(model_ctype.pk, obj.pk))
# Not logged in: we should see the login page.
response = self.client.get(shortcut_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
# Logged in? Redirect.
self.client.force_login(self.superuser)
response = self.client.get(shortcut_url, follow=False)
# Can't use self.assertRedirects() because User.get_absolute_url() is silly.
self.assertEqual(response.status_code, 302)
# Domain may depend on contrib.sites tests also run
self.assertRegex(response.url, 'http://(testserver|example.com)/dummy/foo/')
def test_has_module_permission(self):
"""
has_module_permission() returns True for all users who
have any permission for that module (add, change, or delete), so that
the module is displayed on the admin index page.
"""
self.client.force_login(self.superuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
def test_overriding_has_module_permission(self):
"""
If has_module_permission() always returns False, the module shouldn't
be displayed on the admin index page for any users.
"""
articles = Article._meta.verbose_name_plural.title()
sections = Section._meta.verbose_name_plural.title()
index_url = reverse('admin7:index')
self.client.force_login(self.superuser)
response = self.client.get(index_url)
self.assertContains(response, sections)
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(index_url)
self.assertNotContains(response, articles)
# The app list displays Sections but not Articles as the latter has
# ModelAdmin.has_module_permission() = False.
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin7:app_list', args=('admin_views',)))
self.assertContains(response, sections)
self.assertNotContains(response, articles)
def test_post_save_message_no_forbidden_links_visible(self):
"""
Post-save message shouldn't contain a link to the change form if the
user doesn't have the change permission.
"""
self.client.force_login(self.adduser)
# Emulate Article creation for user with add-only permission.
post_data = {
"title": "Fun & games",
"content": "Some content",
"date_0": "2015-10-31",
"date_1": "16:35:00",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data, follow=True)
self.assertContains(
response,
'<li class="success">The article “Fun & games” was added successfully.</li>',
html=True
)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewProxyModelPermissionsTests(TestCase):
"""Tests for proxy models permissions in the admin."""
@classmethod
def setUpTestData(cls):
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
# Setup permissions.
opts = UserProxy._meta
cls.viewuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('view', opts)))
cls.adduser.user_permissions.add(get_perm(UserProxy, get_permission_codename('add', opts)))
cls.changeuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('change', opts)))
cls.deleteuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('delete', opts)))
# UserProxy instances.
cls.user_proxy = UserProxy.objects.create(username='user_proxy', password='secret')
def test_add(self):
self.client.force_login(self.adduser)
url = reverse('admin:admin_views_userproxy_add')
data = {
'username': 'can_add',
'password': 'secret',
'date_joined_0': '2019-01-15',
'date_joined_1': '16:59:10',
}
response = self.client.post(url, data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertTrue(UserProxy.objects.filter(username='can_add').exists())
def test_view(self):
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_userproxy_changelist'))
self.assertContains(response, '<h1>Select user proxy to view</h1>')
response = self.client.get(reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,)))
self.assertContains(response, '<h1>View user proxy</h1>')
self.assertContains(response, '<div class="readonly">user_proxy</div>')
def test_change(self):
self.client.force_login(self.changeuser)
data = {
'password': self.user_proxy.password,
'username': self.user_proxy.username,
'date_joined_0': self.user_proxy.date_joined.strftime('%Y-%m-%d'),
'date_joined_1': self.user_proxy.date_joined.strftime('%H:%M:%S'),
'first_name': 'first_name',
}
url = reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,))
response = self.client.post(url, data)
self.assertRedirects(response, reverse('admin:admin_views_userproxy_changelist'))
self.assertEqual(UserProxy.objects.get(pk=self.user_proxy.pk).first_name, 'first_name')
def test_delete(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_userproxy_delete', args=(self.user_proxy.pk,))
response = self.client.post(url, {'post': 'yes'}, follow=True)
self.assertEqual(response.status_code, 200)
self.assertFalse(UserProxy.objects.filter(pk=self.user_proxy.pk).exists())
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewsNoUrlTest(TestCase):
"""Regression test for #17333"""
@classmethod
def setUpTestData(cls):
# User who can change Reports
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.changeuser.user_permissions.add(get_perm(Report, get_permission_codename('change', Report._meta)))
def test_no_standard_modeladmin_urls(self):
"""Admin index views don't break when user's ModelAdmin removes standard urls"""
self.client.force_login(self.changeuser)
r = self.client.get(reverse('admin:index'))
# we shouldn't get a 500 error caused by a NoReverseMatch
self.assertEqual(r.status_code, 200)
self.client.get(reverse('admin:logout'))
@skipUnlessDBFeature('can_defer_constraint_checks')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewDeletedObjectsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.v1 = Villain.objects.create(name='Adam')
cls.v2 = Villain.objects.create(name='Sue')
cls.sv1 = SuperVillain.objects.create(name='Bob')
cls.pl1 = Plot.objects.create(name='World Domination', team_leader=cls.v1, contact=cls.v2)
cls.pl2 = Plot.objects.create(name='World Peace', team_leader=cls.v2, contact=cls.v2)
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
cls.pd1 = PlotDetails.objects.create(details='almost finished', plot=cls.pl1)
cls.sh1 = SecretHideout.objects.create(location='underground bunker', villain=cls.v1)
cls.sh2 = SecretHideout.objects.create(location='floating castle', villain=cls.sv1)
cls.ssh1 = SuperSecretHideout.objects.create(location='super floating castle!', supervillain=cls.sv1)
cls.cy1 = CyclicOne.objects.create(name='I am recursive', two_id=1)
cls.cy2 = CyclicTwo.objects.create(name='I am recursive too', one_id=1)
def setUp(self):
self.client.force_login(self.superuser)
def test_nesting(self):
"""
Objects should be nested to display the relationships that
cause them to be scheduled for deletion.
"""
pattern = re.compile(
r'<li>Plot: <a href="%s">World Domination</a>\s*<ul>\s*'
r'<li>Plot details: <a href="%s">almost finished</a>' % (
reverse('admin:admin_views_plot_change', args=(self.pl1.pk,)),
reverse('admin:admin_views_plotdetails_change', args=(self.pd1.pk,)),
)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertRegex(response.content.decode(), pattern)
def test_cyclic(self):
"""
Cyclic relationships should still cause each object to only be
listed once.
"""
one = '<li>Cyclic one: <a href="%s">I am recursive</a>' % (
reverse('admin:admin_views_cyclicone_change', args=(self.cy1.pk,)),
)
two = '<li>Cyclic two: <a href="%s">I am recursive too</a>' % (
reverse('admin:admin_views_cyclictwo_change', args=(self.cy2.pk,)),
)
response = self.client.get(reverse('admin:admin_views_cyclicone_delete', args=(self.cy1.pk,)))
self.assertContains(response, one, 1)
self.assertContains(response, two, 1)
def test_perms_needed(self):
self.client.logout()
delete_user = User.objects.get(username='deleteuser')
delete_user.user_permissions.add(get_perm(Plot, get_permission_codename('delete', Plot._meta)))
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(self.pl1.pk,)))
self.assertContains(response, "your account doesn't have permission to delete the following types of objects")
self.assertContains(response, "<li>plot details</li>")
def test_protected(self):
q = Question.objects.create(question="Why?")
a1 = Answer.objects.create(question=q, answer="Because.")
a2 = Answer.objects.create(question=q, answer="Yes.")
response = self.client.get(reverse('admin:admin_views_question_delete', args=(q.pk,)))
self.assertContains(response, "would require deleting the following protected related objects")
self.assertContains(
response,
'<li>Answer: <a href="%s">Because.</a></li>' % reverse('admin:admin_views_answer_change', args=(a1.pk,))
)
self.assertContains(
response,
'<li>Answer: <a href="%s">Yes.</a></li>' % reverse('admin:admin_views_answer_change', args=(a2.pk,))
)
def test_post_delete_protected(self):
"""
A POST request to delete protected objects should display the page
which says the deletion is prohibited.
"""
q = Question.objects.create(question='Why?')
Answer.objects.create(question=q, answer='Because.')
response = self.client.post(reverse('admin:admin_views_question_delete', args=(q.pk,)), {'post': 'yes'})
self.assertEqual(Question.objects.count(), 1)
self.assertContains(response, "would require deleting the following protected related objects")
def test_restricted(self):
album = Album.objects.create(title='Amaryllis')
song = Song.objects.create(album=album, name='Unity')
response = self.client.get(reverse('admin:admin_views_album_delete', args=(album.pk,)))
self.assertContains(
response,
'would require deleting the following protected related objects',
)
self.assertContains(
response,
'<li>Song: <a href="%s">Unity</a></li>'
% reverse('admin:admin_views_song_change', args=(song.pk,))
)
def test_post_delete_restricted(self):
album = Album.objects.create(title='Amaryllis')
Song.objects.create(album=album, name='Unity')
response = self.client.post(
reverse('admin:admin_views_album_delete', args=(album.pk,)),
{'post': 'yes'},
)
self.assertEqual(Album.objects.count(), 1)
self.assertContains(
response,
'would require deleting the following protected related objects',
)
def test_not_registered(self):
should_contain = """<li>Secret hideout: underground bunker"""
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain, 1)
def test_multiple_fkeys_to_same_model(self):
"""
If a deleted object has two relationships from another model,
both of those should be followed in looking for related
objects to delete.
"""
should_contain = '<li>Plot: <a href="%s">World Domination</a>' % reverse(
'admin:admin_views_plot_change', args=(self.pl1.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain)
def test_multiple_fkeys_to_same_instance(self):
"""
If a deleted object has two relationships pointing to it from
another object, the other object should still only be listed
once.
"""
should_contain = '<li>Plot: <a href="%s">World Peace</a></li>' % reverse(
'admin:admin_views_plot_change', args=(self.pl2.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain, 1)
def test_inheritance(self):
"""
In the case of an inherited model, if either the child or
parent-model instance is deleted, both instances are listed
for deletion, as well as any relationships they have.
"""
should_contain = [
'<li>Villain: <a href="%s">Bob</a>' % reverse('admin:admin_views_villain_change', args=(self.sv1.pk,)),
'<li>Super villain: <a href="%s">Bob</a>' % reverse(
'admin:admin_views_supervillain_change', args=(self.sv1.pk,)
),
'<li>Secret hideout: floating castle',
'<li>Super secret hideout: super floating castle!',
]
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
response = self.client.get(reverse('admin:admin_views_supervillain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
def test_generic_relations(self):
"""
If a deleted object has GenericForeignKeys pointing to it,
those objects should be listed for deletion.
"""
plot = self.pl3
tag = FunkyTag.objects.create(content_object=plot, name='hott')
should_contain = '<li>Funky tag: <a href="%s">hott' % reverse(
'admin:admin_views_funkytag_change', args=(tag.id,))
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(plot.pk,)))
self.assertContains(response, should_contain)
def test_generic_relations_with_related_query_name(self):
"""
If a deleted object has GenericForeignKey with
GenericRelation(related_query_name='...') pointing to it, those objects
should be listed for deletion.
"""
bookmark = Bookmark.objects.create(name='djangoproject')
tag = FunkyTag.objects.create(content_object=bookmark, name='django')
tag_url = reverse('admin:admin_views_funkytag_change', args=(tag.id,))
should_contain = '<li>Funky tag: <a href="%s">django' % tag_url
response = self.client.get(reverse('admin:admin_views_bookmark_delete', args=(bookmark.pk,)))
self.assertContains(response, should_contain)
def test_delete_view_uses_get_deleted_objects(self):
"""The delete view uses ModelAdmin.get_deleted_objects()."""
book = Book.objects.create(name='Test Book')
response = self.client.get(reverse('admin2:admin_views_book_delete', args=(book.pk,)))
# BookAdmin.get_deleted_objects() returns custom text.
self.assertContains(response, 'a deletable object')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestGenericRelations(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.v1 = Villain.objects.create(name='Adam')
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
def setUp(self):
self.client.force_login(self.superuser)
def test_generic_content_object_in_list_display(self):
FunkyTag.objects.create(content_object=self.pl3, name='hott')
response = self.client.get(reverse('admin:admin_views_funkytag_changelist'))
self.assertContains(response, "%s</td>" % self.pl3)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewStringPrimaryKeyTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.pk = (
"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890 "
r"""-_.!~*'() ;/?:@&=+$, <>#%" {}|\^[]`"""
)
cls.m1 = ModelWithStringPrimaryKey.objects.create(string_pk=cls.pk)
content_type_pk = ContentType.objects.get_for_model(ModelWithStringPrimaryKey).pk
user_pk = cls.superuser.pk
LogEntry.objects.log_action(user_pk, content_type_pk, cls.pk, cls.pk, 2, change_message='Changed something')
def setUp(self):
self.client.force_login(self.superuser)
def test_get_history_view(self):
"""
Retrieving the history for an object using urlencoded form of primary
key should work.
Refs #12349, #18550.
"""
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_history', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
self.assertContains(response, 'Changed something')
def test_get_change_view(self):
"Retrieving the object using urlencoded form of primary key should work"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_change', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
def test_changelist_to_changeform_link(self):
"Link to the changeform of the object in changelist should use reverse() and be quoted -- #18072"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_changelist'))
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
pk_final_url = escape(iri_to_uri(quote(self.pk)))
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', pk_final_url)
should_contain = '<th class="field-__str__"><a href="%s">%s</a></th>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_recentactions_link(self):
"The link from the recent actions list referring to the changeform of the object should be quoted"
response = self.client.get(reverse('admin:index'))
link = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(self.pk),))
should_contain = """<a href="%s">%s</a>""" % (escape(link), escape(self.pk))
self.assertContains(response, should_contain)
def test_deleteconfirmation_link(self):
"The link from the delete confirmation page referring back to the changeform of the object should be quoted"
url = reverse('admin:admin_views_modelwithstringprimarykey_delete', args=(quote(self.pk),))
response = self.client.get(url)
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', escape(iri_to_uri(quote(self.pk))))
should_contain = '<a href="%s">%s</a>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_url_conflicts_with_add(self):
"A model with a primary key that ends with add or is `add` should be visible"
add_model = ModelWithStringPrimaryKey.objects.create(pk="i have something to add")
add_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
add_model2 = ModelWithStringPrimaryKey.objects.create(pk="add")
add_url = reverse('admin:admin_views_modelwithstringprimarykey_add')
change_url = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model2.pk),))
self.assertNotEqual(add_url, change_url)
def test_url_conflicts_with_delete(self):
"A model with a primary key that ends with delete should be visible"
delete_model = ModelWithStringPrimaryKey(pk="delete")
delete_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(delete_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_url_conflicts_with_history(self):
"A model with a primary key that ends with history should be visible"
history_model = ModelWithStringPrimaryKey(pk="history")
history_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(history_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_shortcut_view_with_escaping(self):
"'View on site should' work properly with char fields"
model = ModelWithStringPrimaryKey(pk='abc_123')
model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(model.pk),))
)
should_contain = '/%s/" class="viewsitelink">' % model.pk
self.assertContains(response, should_contain)
def test_change_view_history_link(self):
"""Object history button link should work and contain the pk value quoted."""
url = reverse(
'admin:%s_modelwithstringprimarykey_change' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
expected_link = reverse(
'admin:%s_modelwithstringprimarykey_history' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
self.assertContains(response, '<a href="%s" class="historylink"' % escape(expected_link))
def test_redirect_on_add_view_continue_button(self):
"""As soon as an object is added using "Save and continue editing"
button, the user should be redirected to the object's change_view.
In case primary key is a string containing some special characters
like slash or underscore, these characters must be escaped (see #22266)
"""
response = self.client.post(
reverse('admin:admin_views_modelwithstringprimarykey_add'),
{
'string_pk': '123/history',
"_continue": "1", # Save and continue editing
}
)
self.assertEqual(response.status_code, 302) # temporary redirect
self.assertIn('/123_2Fhistory/', response.headers['location']) # PK is quoted
@override_settings(ROOT_URLCONF='admin_views.urls')
class SecureViewTests(TestCase):
"""
Test behavior of a view protected by the staff_member_required decorator.
"""
def test_secure_view_shows_login_if_not_logged_in(self):
secure_url = reverse('secure_view')
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), secure_url))
response = self.client.get(secure_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.context[REDIRECT_FIELD_NAME], secure_url)
def test_staff_member_required_decorator_works_with_argument(self):
"""
Staff_member_required decorator works with an argument
(redirect_field_name).
"""
secure_url = '/test_admin/admin/secure-view2/'
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?myfield=%s' % (reverse('admin:login'), secure_url))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewUnicodeTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.b1 = Book.objects.create(name='Lærdommer')
cls.p1 = Promo.objects.create(name='<Promo for Lærdommer>', book=cls.b1)
cls.chap1 = Chapter.objects.create(
title='Norske bostaver æøå skaper problemer', content='<p>Svært frustrerende med UnicodeDecodeErro</p>',
book=cls.b1
)
cls.chap2 = Chapter.objects.create(
title='Kjærlighet', content='<p>La kjærligheten til de lidende seire.</p>', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Kjærlighet', content='<p>Noe innhold</p>', book=cls.b1)
cls.chap4 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='<Xtra(1) Norske bostaver æøå skaper problemer>')
cls.chap5 = ChapterXtra1.objects.create(chap=cls.chap2, xtra='<Xtra(1) Kjærlighet>')
cls.chap6 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='<Xtra(1) Kjærlighet>')
cls.chap7 = ChapterXtra2.objects.create(chap=cls.chap1, xtra='<Xtra(2) Norske bostaver æøå skaper problemer>')
cls.chap8 = ChapterXtra2.objects.create(chap=cls.chap2, xtra='<Xtra(2) Kjærlighet>')
cls.chap9 = ChapterXtra2.objects.create(chap=cls.chap3, xtra='<Xtra(2) Kjærlighet>')
def setUp(self):
self.client.force_login(self.superuser)
def test_unicode_edit(self):
"""
A test to ensure that POST on edit_view handles non-ASCII characters.
"""
post_data = {
"name": "Test lærdommer",
# inline data
"chapter_set-TOTAL_FORMS": "6",
"chapter_set-INITIAL_FORMS": "3",
"chapter_set-MAX_NUM_FORMS": "0",
"chapter_set-0-id": self.chap1.pk,
"chapter_set-0-title": "Norske bostaver æøå skaper problemer",
"chapter_set-0-content": "<p>Svært frustrerende med UnicodeDecodeError</p>",
"chapter_set-1-id": self.chap2.id,
"chapter_set-1-title": "Kjærlighet.",
"chapter_set-1-content": "<p>La kjærligheten til de lidende seire.</p>",
"chapter_set-2-id": self.chap3.id,
"chapter_set-2-title": "Need a title.",
"chapter_set-2-content": "<p>Newest content</p>",
"chapter_set-3-id": "",
"chapter_set-3-title": "",
"chapter_set-3-content": "",
"chapter_set-4-id": "",
"chapter_set-4-title": "",
"chapter_set-4-content": "",
"chapter_set-5-id": "",
"chapter_set-5-title": "",
"chapter_set-5-content": "",
}
response = self.client.post(reverse('admin:admin_views_book_change', args=(self.b1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_unicode_delete(self):
"""
The delete_view handles non-ASCII characters
"""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_book_delete', args=(self.b1.pk,))
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 200)
response = self.client.post(delete_url, delete_dict)
self.assertRedirects(response, reverse('admin:admin_views_book_changelist'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewListEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_inheritance(self):
Podcast.objects.create(name="This Week in Django", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_inheritance_2(self):
Vodcast.objects.create(name="This Week in Django", released=True)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_custom_pk(self):
Language.objects.create(iso='en', name='English', english_name='English')
response = self.client.get(reverse('admin:admin_views_language_changelist'))
self.assertEqual(response.status_code, 200)
def test_changelist_input_html(self):
response = self.client.get(reverse('admin:admin_views_person_changelist'))
# 2 inputs per object(the field and the hidden id field) = 6
# 4 management hidden fields = 4
# 4 action inputs (3 regular checkboxes, 1 checkbox to select all)
# main form submit button = 1
# search field and search submit button = 2
# CSRF field = 1
# field to track 'select all' across paginated views = 1
# 6 + 4 + 4 + 1 + 2 + 1 + 1 = 19 inputs
self.assertContains(response, "<input", count=20)
# 1 select per object = 3 selects
self.assertContains(response, "<select", count=4)
def test_post_messages(self):
# Ticket 12707: Saving inline editable should not show admin
# action warnings
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'),
data, follow=True)
self.assertEqual(len(response.context['messages']), 1)
def test_post_submission(self):
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
# test a filtered page
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "2",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"form-0-alive": "checked",
"form-1-id": str(self.per3.pk),
"form-1-gender": "1",
"form-1-alive": "checked",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?gender__exact=1', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
# test a searched page
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?q=john', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
def test_non_field_errors(self):
"""
Non-field errors are displayed for each of the forms in the
changelist's formset.
"""
fd1 = FoodDelivery.objects.create(reference='123', driver='bill', restaurant='thai')
fd2 = FoodDelivery.objects.create(reference='456', driver='bill', restaurant='india')
fd3 = FoodDelivery.objects.create(reference='789', driver='bill', restaurant='pizza')
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "pizza",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
1,
html=True
)
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
# Same data also.
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "thai",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
2,
html=True
)
def test_non_form_errors(self):
# test if non-form errors are handled; ticket #12716
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertContains(response, "Grace is not a Zombie")
def test_non_form_errors_is_errorlist(self):
# test if non-form errors are correctly handled; ticket #12878
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
non_form_errors = response.context['cl'].formset.non_form_errors()
self.assertIsInstance(non_form_errors, ErrorList)
self.assertEqual(
str(non_form_errors),
str(ErrorList(['Grace is not a Zombie'], error_class='nonform')),
)
def test_list_editable_ordering(self):
collector = Collector.objects.create(id=1, name="Frederick Clegg")
Category.objects.create(id=1, order=1, collector=collector)
Category.objects.create(id=2, order=2, collector=collector)
Category.objects.create(id=3, order=0, collector=collector)
Category.objects.create(id=4, order=0, collector=collector)
# NB: The order values must be changed so that the items are reordered.
data = {
"form-TOTAL_FORMS": "4",
"form-INITIAL_FORMS": "4",
"form-MAX_NUM_FORMS": "0",
"form-0-order": "14",
"form-0-id": "1",
"form-0-collector": "1",
"form-1-order": "13",
"form-1-id": "2",
"form-1-collector": "1",
"form-2-order": "1",
"form-2-id": "3",
"form-2-collector": "1",
"form-3-order": "0",
"form-3-id": "4",
"form-3-collector": "1",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_category_changelist'), data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
def test_list_editable_pagination(self):
"""
Pagination works for list_editable items.
"""
UnorderedObject.objects.create(id=1, name='Unordered object #1')
UnorderedObject.objects.create(id=2, name='Unordered object #2')
UnorderedObject.objects.create(id=3, name='Unordered object #3')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist'))
self.assertContains(response, 'Unordered object #3')
self.assertContains(response, 'Unordered object #2')
self.assertNotContains(response, 'Unordered object #1')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist') + '?p=2')
self.assertNotContains(response, 'Unordered object #3')
self.assertNotContains(response, 'Unordered object #2')
self.assertContains(response, 'Unordered object #1')
def test_list_editable_action_submit(self):
# List editable changes should not be executed if the action "Go" button is
# used to submit the form.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": "1",
"form-1-gender": "2",
"form-1-id": "2",
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": "3",
"index": "0",
"_selected_action": ['3'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 1)
def test_list_editable_action_choices(self):
# List editable changes should be executed if the "Save" button is
# used to submit the form - any action choices should be ignored.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
"_selected_action": ['1'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
def test_list_editable_popup(self):
"""
Fields should not be list-editable in popups.
"""
response = self.client.get(reverse('admin:admin_views_person_changelist'))
self.assertNotEqual(response.context['cl'].list_editable, ())
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?%s' % IS_POPUP_VAR)
self.assertEqual(response.context['cl'].list_editable, ())
def test_pk_hidden_fields(self):
"""
hidden pk fields aren't displayed in the table body and their
corresponding human-readable value is displayed instead. The hidden pk
fields are displayed but separately (not in the table) and only once.
"""
story1 = Story.objects.create(title='The adventures of Guido', content='Once upon a time in Djangoland...')
story2 = Story.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
response = self.client.get(reverse('admin:admin_views_story_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<td class="field-id">%d</td>' % story1.id, 1)
self.assertContains(response, '<td class="field-id">%d</td>' % story2.id, 1)
def test_pk_hidden_fields_with_list_display_links(self):
""" Similarly as test_pk_hidden_fields, but when the hidden pk fields are
referenced in list_display_links.
Refs #12475.
"""
story1 = OtherStory.objects.create(
title='The adventures of Guido',
content='Once upon a time in Djangoland...',
)
story2 = OtherStory.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
link1 = reverse('admin:admin_views_otherstory_change', args=(story1.pk,))
link2 = reverse('admin:admin_views_otherstory_change', args=(story2.pk,))
response = self.client.get(reverse('admin:admin_views_otherstory_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link1, story1.id), 1)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link2, story2.id), 1)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSearchTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='John Doe', gender=1)
Person.objects.create(name='John O"Hara', gender=1)
Person.objects.create(name="John O'Hara", gender=1)
cls.t1 = Recommender.objects.create()
cls.t2 = Recommendation.objects.create(the_recommender=cls.t1)
cls.t3 = Recommender.objects.create()
cls.t4 = Recommendation.objects.create(the_recommender=cls.t3)
cls.tt1 = TitleTranslation.objects.create(title=cls.t1, text='Bar')
cls.tt2 = TitleTranslation.objects.create(title=cls.t2, text='Foo')
cls.tt3 = TitleTranslation.objects.create(title=cls.t3, text='Few')
cls.tt4 = TitleTranslation.objects.create(title=cls.t4, text='Bas')
def setUp(self):
self.client.force_login(self.superuser)
def test_search_on_sibling_models(self):
"A search that mentions sibling models"
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned 1 object
self.assertContains(response, "\n1 recommendation\n")
def test_with_fk_to_field(self):
"""
The to_field GET parameter is preserved when a search is performed.
Refs #10918.
"""
response = self.client.get(reverse('admin:auth_user_changelist') + '?q=joe&%s=id' % TO_FIELD_VAR)
self.assertContains(response, "\n1 user\n")
self.assertContains(response, '<input type="hidden" name="%s" value="id">' % TO_FIELD_VAR, html=True)
def test_exact_matches(self):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned one object
self.assertContains(response, "\n1 recommendation\n")
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=ba')
# confirm the search returned zero objects
self.assertContains(response, "\n0 recommendations\n")
def test_beginning_matches(self):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
# confirm the search returned one object
self.assertContains(response, "\n1 person\n")
self.assertContains(response, "Guido")
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=uido')
# confirm the search returned zero objects
self.assertContains(response, "\n0 persons\n")
self.assertNotContains(response, "Guido")
def test_pluggable_search(self):
PluggableSearchPerson.objects.create(name="Bob", age=10)
PluggableSearchPerson.objects.create(name="Amy", age=20)
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=Bob')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Bob")
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=20')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Amy")
def test_reset_link(self):
"""
Test presence of reset link in search bar ("1 result (_x total_)").
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
# + 1 for total count
with self.assertNumQueries(5):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">6 total</a>)</span>""",
html=True
)
def test_no_total_count(self):
"""
#8408 -- "Show all" should be displayed instead of the total count if
ModelAdmin.show_full_result_count is False.
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
with self.assertNumQueries(4):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">Show all</a>)</span>""",
html=True
)
self.assertTrue(response.context['cl'].show_admin_actions)
def test_search_with_spaces(self):
url = reverse('admin:admin_views_person_changelist') + '?q=%s'
tests = [
('"John Doe"', 1),
("'John Doe'", 1),
('John Doe', 0),
('"John Doe" John', 1),
("'John Doe' John", 1),
("John Doe John", 0),
('"John Do"', 1),
("'John Do'", 1),
("'John O\'Hara'", 0),
("'John O\\'Hara'", 1),
('"John O\"Hara"', 0),
('"John O\\"Hara"', 1),
]
for search, hits in tests:
with self.subTest(search=search):
response = self.client.get(url % search)
self.assertContains(response, '\n%s person' % hits)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInheritedInlinesTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_inline(self):
"""
Inline models which inherit from a common parent are correctly handled.
"""
foo_user = "foo username"
bar_user = "bar username"
name_re = re.compile(b'name="(.*?)"')
# test the add case
response = self.client.get(reverse('admin:admin_views_persona_add'))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
# test the add case
post_data = {
"name": "Test Name",
# inline data
"accounts-TOTAL_FORMS": "1",
"accounts-INITIAL_FORMS": "0",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": foo_user,
"accounts-2-TOTAL_FORMS": "1",
"accounts-2-INITIAL_FORMS": "0",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": bar_user,
}
response = self.client.post(reverse('admin:admin_views_persona_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
persona_id = Persona.objects.all()[0].id
foo_id = FooAccount.objects.all()[0].id
bar_id = BarAccount.objects.all()[0].id
# test the edit case
response = self.client.get(reverse('admin:admin_views_persona_change', args=(persona_id,)))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
post_data = {
"name": "Test Name",
"accounts-TOTAL_FORMS": "2",
"accounts-INITIAL_FORMS": "1",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": "%s-1" % foo_user,
"accounts-0-account_ptr": str(foo_id),
"accounts-0-persona": str(persona_id),
"accounts-2-TOTAL_FORMS": "2",
"accounts-2-INITIAL_FORMS": "1",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": "%s-1" % bar_user,
"accounts-2-0-account_ptr": str(bar_id),
"accounts-2-0-persona": str(persona_id),
}
response = self.client.post(reverse('admin:admin_views_persona_change', args=(persona_id,)), post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, "%s-1" % foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, "%s-1" % bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestCustomChangeList(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_custom_changelist(self):
"""
Validate that a custom ChangeList class can be used (#9749)
"""
# Insert some data
post_data = {"name": "First Gadget"}
response = self.client.post(reverse('admin:admin_views_gadget_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
# Hit the page once to get messages out of the queue message list
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
# Data is still not visible on the page
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
self.assertNotContains(response, 'First Gadget')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestInlineNotEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_GET_parent_add(self):
"""
InlineModelAdmin broken?
"""
response = self.client.get(reverse('admin:admin_views_parent_add'))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomQuerysetTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.pks = [EmptyModel.objects.create().id for i in range(3)]
def setUp(self):
self.client.force_login(self.superuser)
self.super_login = {
REDIRECT_FIELD_NAME: reverse('admin:index'),
'username': 'super',
'password': 'secret',
}
def test_changelist_view(self):
response = self.client.get(reverse('admin:admin_views_emptymodel_changelist'))
for i in self.pks:
if i > 1:
self.assertContains(response, 'Primary key = %s' % i)
else:
self.assertNotContains(response, 'Primary key = %s' % i)
def test_changelist_view_count_queries(self):
# create 2 Person objects
Person.objects.create(name='person1', gender=1)
Person.objects.create(name='person2', gender=2)
changelist_url = reverse('admin:admin_views_person_changelist')
# 5 queries are expected: 1 for the session, 1 for the user,
# 2 for the counts and 1 for the objects on the page
with self.assertNumQueries(5):
resp = self.client.get(changelist_url)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'q': 'not_in_name'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 0 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 0 selected')
with self.assertNumQueries(5):
extra = {'q': 'person'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'gender__exact': '1'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 1 selected')
self.assertEqual(resp.context['selection_note_all'], '1 selected')
def test_change_view(self):
for i in self.pks:
url = reverse('admin:admin_views_emptymodel_change', args=(i,))
response = self.client.get(url, follow=True)
if i > 1:
self.assertEqual(response.status_code, 200)
else:
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['empty model with ID “1” doesn’t exist. Perhaps it was deleted?']
)
def test_add_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(CoverLetter.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"author": "Candidate, Best",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_coverletter_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = CoverLetter.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'Candidate, Best</a>” was added successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(ShortMessage.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"content": "What's this SMS thing?",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_shortmessage_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name
sm = ShortMessage.objects.all()[0]
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_add_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(Telegram.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "Urgent telegram",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = Telegram.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Urgent telegram</a>” was added successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(Paper.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name
p = Paper.objects.all()[0]
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_edit_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
cl = CoverLetter.objects.create(author="John Doe")
self.assertEqual(CoverLetter.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_coverletter_change', args=(cl.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"author": "John Doe II",
"_save": "Save",
}
url = reverse('admin:admin_views_coverletter_change', args=(cl.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name. Instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'John Doe II</a>” was changed successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(cl.pk,)), html=True
)
# model has no __str__ method
sm = ShortMessage.objects.create(content="This is expensive")
self.assertEqual(ShortMessage.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"content": "Too expensive",
"_save": "Save",
}
url = reverse('admin:admin_views_shortmessage_change', args=(sm.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_edit_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
t = Telegram.objects.create(title="First Telegram")
self.assertEqual(Telegram.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_telegram_change', args=(t.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "Telegram without typo",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_change', args=(t.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name. The instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Telegram without typo</a>” was changed successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(t.pk,)), html=True
)
# model has no __str__ method
p = Paper.objects.create(title="My Paper Title")
self.assertEqual(Paper.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_paper_change', args=(p.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_change', args=(p.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_history_view_custom_qs(self):
"""
Custom querysets are considered for the admin history view.
"""
self.client.post(reverse('admin:login'), self.super_login)
FilteredManager.objects.create(pk=1)
FilteredManager.objects.create(pk=2)
response = self.client.get(reverse('admin:admin_views_filteredmanager_changelist'))
self.assertContains(response, "PK=1")
self.assertContains(response, "PK=2")
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(1,))).status_code, 200
)
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(2,))).status_code, 200
)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineFileUploadTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
file1 = tempfile.NamedTemporaryFile(suffix=".file1")
file1.write(b'a' * (2 ** 21))
filename = file1.name
file1.close()
cls.gallery = Gallery.objects.create(name='Test Gallery')
cls.picture = Picture.objects.create(
name='Test Picture',
image=filename,
gallery=cls.gallery,
)
def setUp(self):
self.client.force_login(self.superuser)
def test_form_has_multipart_enctype(self):
response = self.client.get(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,))
)
self.assertIs(response.context['has_file_field'], True)
self.assertContains(response, MULTIPART_ENCTYPE)
def test_inline_file_upload_edit_validation_error_post(self):
"""
Inline file uploads correctly display prior data (#10002).
"""
post_data = {
"name": "Test Gallery",
"pictures-TOTAL_FORMS": "2",
"pictures-INITIAL_FORMS": "1",
"pictures-MAX_NUM_FORMS": "0",
"pictures-0-id": str(self.picture.id),
"pictures-0-gallery": str(self.gallery.id),
"pictures-0-name": "Test Picture",
"pictures-0-image": "",
"pictures-1-id": "",
"pictures-1-gallery": str(self.gallery.id),
"pictures-1-name": "Test Picture 2",
"pictures-1-image": "",
}
response = self.client.post(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,)), post_data
)
self.assertContains(response, b"Currently")
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.collector = Collector.objects.create(pk=1, name='John Fowles')
def setUp(self):
self.post_data = {
"name": "Test Name",
"widget_set-TOTAL_FORMS": "3",
"widget_set-INITIAL_FORMS": "0",
"widget_set-MAX_NUM_FORMS": "0",
"widget_set-0-id": "",
"widget_set-0-owner": "1",
"widget_set-0-name": "",
"widget_set-1-id": "",
"widget_set-1-owner": "1",
"widget_set-1-name": "",
"widget_set-2-id": "",
"widget_set-2-owner": "1",
"widget_set-2-name": "",
"doohickey_set-TOTAL_FORMS": "3",
"doohickey_set-INITIAL_FORMS": "0",
"doohickey_set-MAX_NUM_FORMS": "0",
"doohickey_set-0-owner": "1",
"doohickey_set-0-code": "",
"doohickey_set-0-name": "",
"doohickey_set-1-owner": "1",
"doohickey_set-1-code": "",
"doohickey_set-1-name": "",
"doohickey_set-2-owner": "1",
"doohickey_set-2-code": "",
"doohickey_set-2-name": "",
"grommet_set-TOTAL_FORMS": "3",
"grommet_set-INITIAL_FORMS": "0",
"grommet_set-MAX_NUM_FORMS": "0",
"grommet_set-0-code": "",
"grommet_set-0-owner": "1",
"grommet_set-0-name": "",
"grommet_set-1-code": "",
"grommet_set-1-owner": "1",
"grommet_set-1-name": "",
"grommet_set-2-code": "",
"grommet_set-2-owner": "1",
"grommet_set-2-name": "",
"whatsit_set-TOTAL_FORMS": "3",
"whatsit_set-INITIAL_FORMS": "0",
"whatsit_set-MAX_NUM_FORMS": "0",
"whatsit_set-0-owner": "1",
"whatsit_set-0-index": "",
"whatsit_set-0-name": "",
"whatsit_set-1-owner": "1",
"whatsit_set-1-index": "",
"whatsit_set-1-name": "",
"whatsit_set-2-owner": "1",
"whatsit_set-2-index": "",
"whatsit_set-2-name": "",
"fancydoodad_set-TOTAL_FORMS": "3",
"fancydoodad_set-INITIAL_FORMS": "0",
"fancydoodad_set-MAX_NUM_FORMS": "0",
"fancydoodad_set-0-doodad_ptr": "",
"fancydoodad_set-0-owner": "1",
"fancydoodad_set-0-name": "",
"fancydoodad_set-0-expensive": "on",
"fancydoodad_set-1-doodad_ptr": "",
"fancydoodad_set-1-owner": "1",
"fancydoodad_set-1-name": "",
"fancydoodad_set-1-expensive": "on",
"fancydoodad_set-2-doodad_ptr": "",
"fancydoodad_set-2-owner": "1",
"fancydoodad_set-2-name": "",
"fancydoodad_set-2-expensive": "on",
"category_set-TOTAL_FORMS": "3",
"category_set-INITIAL_FORMS": "0",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "",
"category_set-0-id": "",
"category_set-0-collector": "1",
"category_set-1-order": "",
"category_set-1-id": "",
"category_set-1-collector": "1",
"category_set-2-order": "",
"category_set-2-id": "",
"category_set-2-collector": "1",
}
self.client.force_login(self.superuser)
def test_simple_inline(self):
"A simple model can be saved as inlines"
# First add a new inline
self.post_data['widget_set-0-name'] = "Widget 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
widget_id = Widget.objects.all()[0].id
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="widget_set-0-id"')
# No file or image fields, no enctype on the forms
self.assertIs(response.context['has_file_field'], False)
self.assertNotContains(response, MULTIPART_ENCTYPE)
# Now resave that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
# Now modify that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1 Updated")
def test_explicit_autofield_inline(self):
"A model with an explicit autofield primary key can be saved as inlines. Regression for #8093"
# First add a new inline
self.post_data['grommet_set-0-name'] = "Grommet 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="grommet_set-0-code"')
# Now resave that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# Now modify that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1 Updated")
def test_char_pk_inline(self):
"A model with a character PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="doohickey_set-0-code"')
# Now resave that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# Now modify that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1 Updated")
def test_integer_pk_inline(self):
"A model with an integer PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="whatsit_set-0-index"')
# Now resave that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# Now modify that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1 Updated")
def test_inherited_inline(self):
"An inherited model can be saved as inlines. Regression for #11042"
# First add a new inline
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
doodad_pk = FancyDoodad.objects.all()[0].pk
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="fancydoodad_set-0-doodad_ptr"')
# Now resave that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
# Now modify that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1 Updated")
def test_ordered_inline(self):
"""
An inline with an editable ordering fields is updated correctly.
"""
# Create some objects with an initial ordering
Category.objects.create(id=1, order=1, collector=self.collector)
Category.objects.create(id=2, order=2, collector=self.collector)
Category.objects.create(id=3, order=0, collector=self.collector)
Category.objects.create(id=4, order=0, collector=self.collector)
# NB: The order values must be changed so that the items are reordered.
self.post_data.update({
"name": "Frederick Clegg",
"category_set-TOTAL_FORMS": "7",
"category_set-INITIAL_FORMS": "4",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "14",
"category_set-0-id": "1",
"category_set-0-collector": "1",
"category_set-1-order": "13",
"category_set-1-id": "2",
"category_set-1-collector": "1",
"category_set-2-order": "1",
"category_set-2-id": "3",
"category_set-2-collector": "1",
"category_set-3-order": "0",
"category_set-3-id": "4",
"category_set-3-collector": "1",
"category_set-4-order": "",
"category_set-4-id": "",
"category_set-4-collector": "1",
"category_set-5-order": "",
"category_set-5-id": "",
"category_set-5-collector": "1",
"category_set-6-order": "",
"category_set-6-id": "",
"category_set-6-collector": "1",
})
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(self.collector.category_set.count(), 4)
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
@override_settings(ROOT_URLCONF='admin_views.urls')
class NeverCacheTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
def setUp(self):
self.client.force_login(self.superuser)
def test_admin_index(self):
"Check the never-cache status of the main index"
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_app_index(self):
"Check the never-cache status of an application index"
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(get_max_age(response), 0)
def test_model_index(self):
"Check the never-cache status of a model index"
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
self.assertEqual(get_max_age(response), 0)
def test_model_add(self):
"Check the never-cache status of a model add page"
response = self.client.get(reverse('admin:admin_views_fabric_add'))
self.assertEqual(get_max_age(response), 0)
def test_model_view(self):
"Check the never-cache status of a model edit page"
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_history(self):
"Check the never-cache status of a model history page"
response = self.client.get(reverse('admin:admin_views_section_history', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_delete(self):
"Check the never-cache status of a model delete page"
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_login(self):
"Check the never-cache status of login views"
self.client.logout()
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_logout(self):
"Check the never-cache status of logout view"
response = self.client.get(reverse('admin:logout'))
self.assertEqual(get_max_age(response), 0)
def test_password_change(self):
"Check the never-cache status of the password change view"
self.client.logout()
response = self.client.get(reverse('admin:password_change'))
self.assertIsNone(get_max_age(response))
def test_password_change_done(self):
"Check the never-cache status of the password change done view"
response = self.client.get(reverse('admin:password_change_done'))
self.assertIsNone(get_max_age(response))
def test_JS_i18n(self):
"Check the never-cache status of the JavaScript i18n view"
response = self.client.get(reverse('admin:jsi18n'))
self.assertIsNone(get_max_age(response))
@override_settings(ROOT_URLCONF='admin_views.urls')
class PrePopulatedTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_prepopulated_on(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_add'))
self.assertContains(response, ""id": "#id_slug"")
self.assertContains(response, ""dependency_ids": ["#id_title"]")
self.assertContains(response, ""id": "#id_prepopulatedsubpost_set-0-subslug"")
def test_prepopulated_off(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, "A Long Title")
self.assertNotContains(response, ""id": "#id_slug"")
self.assertNotContains(response, ""dependency_ids": ["#id_title"]")
self.assertNotContains(
response,
""id": "#id_prepopulatedsubpost_set-0-subslug""
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_prepopulated_maxlength_localized(self):
"""
Regression test for #15938: if USE_THOUSAND_SEPARATOR is set, make sure
that maxLength (in the JavaScript) is rendered without separators.
"""
response = self.client.get(reverse('admin:admin_views_prepopulatedpostlargeslug_add'))
self.assertContains(response, ""maxLength": 1000") # instead of 1,000
def test_view_only_add_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'
which is present in the add view, even if the
ModelAdmin.has_change_permission() returns False.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_add'))
self.assertContains(response, 'data-prepopulated-fields=')
self.assertContains(response, '"id": "#id_slug"')
def test_view_only_change_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'. That
doesn't break a view-only change view.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, 'data-prepopulated-fields="[]"')
self.assertContains(response, '<div class="readonly">%s</div>' % self.p1.slug)
@override_settings(ROOT_URLCONF='admin_views.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_views'] + AdminSeleniumTestCase.available_apps
def setUp(self):
self.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
self.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def test_login_button_centered(self):
self.selenium.get(self.live_server_url + reverse('admin:login'))
button = self.selenium.find_element_by_css_selector('.submit-row input')
offset_left = button.get_property('offsetLeft')
offset_right = (
button.get_property('offsetParent').get_property('offsetWidth') -
(offset_left + button.get_property('offsetWidth'))
)
# Use assertAlmostEqual to avoid pixel rounding errors.
self.assertAlmostEqual(offset_left, offset_right, delta=3)
def test_prepopulated_fields(self):
"""
The JavaScript-automated prepopulated fields work with the main form
and with stacked and tabular inlines.
Refs #13068, #9264, #9983, #9784.
"""
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_mainprepopulated_add'))
self.wait_for('.select2')
# Main form ----------------------------------------------------------
self.selenium.find_element_by_id('id_pubdate').send_keys('2012-02-18')
self.select_option('#id_status', 'option two')
self.selenium.find_element_by_id('id_name').send_keys(' the mAin nÀMë and it\'s awεšomeıııİ')
slug1 = self.selenium.find_element_by_id('id_slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_slug2').get_attribute('value')
slug3 = self.selenium.find_element_by_id('id_slug3').get_attribute('value')
self.assertEqual(slug1, 'the-main-name-and-its-awesomeiiii-2012-02-18')
self.assertEqual(slug2, 'option-two-the-main-name-and-its-awesomeiiii')
self.assertEqual(slug3, 'the-main-n\xe0m\xeb-and-its-aw\u03b5\u0161ome\u0131\u0131\u0131i')
# Stacked inlines ----------------------------------------------------
# Initial inline
self.selenium.find_element_by_id('id_relatedprepopulated_set-0-pubdate').send_keys('2011-12-17')
self.select_option('#id_relatedprepopulated_set-0-status', 'option one')
self.selenium.find_element_by_id('id_relatedprepopulated_set-0-name').send_keys(
' here is a sŤāÇkeð inline ! '
)
slug1 = self.selenium.find_element_by_id('id_relatedprepopulated_set-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_relatedprepopulated_set-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'here-is-a-stacked-inline-2011-12-17')
self.assertEqual(slug2, 'option-one-here-is-a-stacked-inline')
initial_select2_inputs = self.selenium.find_elements_by_class_name('select2-selection')
# Inline formsets have empty/invisible forms.
# Only the 4 visible select2 inputs are initialized.
num_initial_select2_inputs = len(initial_select2_inputs)
self.assertEqual(num_initial_select2_inputs, 4)
# Add an inline
self.selenium.find_elements_by_link_text('Add another Related prepopulated')[0].click()
self.assertEqual(
len(self.selenium.find_elements_by_class_name('select2-selection')),
num_initial_select2_inputs + 2
)
self.selenium.find_element_by_id('id_relatedprepopulated_set-1-pubdate').send_keys('1999-01-25')
self.select_option('#id_relatedprepopulated_set-1-status', 'option two')
self.selenium.find_element_by_id('id_relatedprepopulated_set-1-name').send_keys(
' now you haVe anöther sŤāÇkeð inline with a very ... '
'loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooog text... '
)
slug1 = self.selenium.find_element_by_id('id_relatedprepopulated_set-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_relatedprepopulated_set-1-slug2').get_attribute('value')
# 50 characters maximum for slug1 field
self.assertEqual(slug1, 'now-you-have-another-stacked-inline-with-a-very-lo')
# 60 characters maximum for slug2 field
self.assertEqual(slug2, 'option-two-now-you-have-another-stacked-inline-with-a-very-l')
# Tabular inlines ----------------------------------------------------
# Initial inline
self.selenium.find_element_by_id('id_relatedprepopulated_set-2-0-pubdate').send_keys('1234-12-07')
self.select_option('#id_relatedprepopulated_set-2-0-status', 'option two')
self.selenium.find_element_by_id('id_relatedprepopulated_set-2-0-name').send_keys(
'And now, with a tÃbűlaŘ inline !!!'
)
slug1 = self.selenium.find_element_by_id('id_relatedprepopulated_set-2-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_relatedprepopulated_set-2-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'and-now-with-a-tabular-inline-1234-12-07')
self.assertEqual(slug2, 'option-two-and-now-with-a-tabular-inline')
# Add an inline
# Button may be outside the browser frame.
element = self.selenium.find_elements_by_link_text('Add another Related prepopulated')[1]
self.selenium.execute_script('window.scrollTo(0, %s);' % element.location['y'])
element.click()
self.assertEqual(
len(self.selenium.find_elements_by_class_name('select2-selection')),
num_initial_select2_inputs + 4
)
self.selenium.find_element_by_id('id_relatedprepopulated_set-2-1-pubdate').send_keys('1981-08-22')
self.select_option('#id_relatedprepopulated_set-2-1-status', 'option one')
self.selenium.find_element_by_id('id_relatedprepopulated_set-2-1-name').send_keys(
r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters'
)
slug1 = self.selenium.find_element_by_id('id_relatedprepopulated_set-2-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_relatedprepopulated_set-2-1-slug2').get_attribute('value')
self.assertEqual(slug1, 'tabular-inline-with-ignored-characters-1981-08-22')
self.assertEqual(slug2, 'option-one-tabular-inline-with-ignored-characters')
# Add an inline without an initial inline.
# The button is outside of the browser frame.
self.selenium.execute_script("window.scrollTo(0, document.body.scrollHeight);")
self.selenium.find_elements_by_link_text('Add another Related prepopulated')[2].click()
self.assertEqual(
len(self.selenium.find_elements_by_class_name('select2-selection')),
num_initial_select2_inputs + 6
)
# Save and check that everything is properly stored in the database
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.assertEqual(MainPrepopulated.objects.all().count(), 1)
MainPrepopulated.objects.get(
name=' the mAin nÀMë and it\'s awεšomeıııİ',
pubdate='2012-02-18',
status='option two',
slug1='the-main-name-and-its-awesomeiiii-2012-02-18',
slug2='option-two-the-main-name-and-its-awesomeiiii',
slug3='the-main-nàmë-and-its-awεšomeıııi',
)
self.assertEqual(RelatedPrepopulated.objects.all().count(), 4)
RelatedPrepopulated.objects.get(
name=' here is a sŤāÇkeð inline ! ',
pubdate='2011-12-17',
status='option one',
slug1='here-is-a-stacked-inline-2011-12-17',
slug2='option-one-here-is-a-stacked-inline',
)
RelatedPrepopulated.objects.get(
# 75 characters in name field
name=' now you haVe anöther sŤāÇkeð inline with a very ... loooooooooooooooooo',
pubdate='1999-01-25',
status='option two',
slug1='now-you-have-another-stacked-inline-with-a-very-lo',
slug2='option-two-now-you-have-another-stacked-inline-with-a-very-l',
)
RelatedPrepopulated.objects.get(
name='And now, with a tÃbűlaŘ inline !!!',
pubdate='1234-12-07',
status='option two',
slug1='and-now-with-a-tabular-inline-1234-12-07',
slug2='option-two-and-now-with-a-tabular-inline',
)
RelatedPrepopulated.objects.get(
name=r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters',
pubdate='1981-08-22',
status='option one',
slug1='tabular-inline-with-ignored-characters-1981-08-22',
slug2='option-one-tabular-inline-with-ignored-characters',
)
def test_populate_existing_object(self):
"""
The prepopulation works for existing objects too, as long as
the original field is empty (#19082).
"""
# Slugs are empty to start with.
item = MainPrepopulated.objects.create(
name=' this is the mAin nÀMë',
pubdate='2012-02-18',
status='option two',
slug1='',
slug2='',
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
object_url = self.live_server_url + reverse('admin:admin_views_mainprepopulated_change', args=(item.id,))
self.selenium.get(object_url)
self.selenium.find_element_by_id('id_name').send_keys(' the best')
# The slugs got prepopulated since they were originally empty
slug1 = self.selenium.find_element_by_id('id_slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
# Save the object
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.selenium.get(object_url)
self.selenium.find_element_by_id('id_name').send_keys(' hello')
# The slugs got prepopulated didn't change since they were originally not empty
slug1 = self.selenium.find_element_by_id('id_slug1').get_attribute('value')
slug2 = self.selenium.find_element_by_id('id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
def test_collapsible_fieldset(self):
"""
The 'collapse' class in fieldsets definition allows to
show/hide the appropriate field section.
"""
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_add'))
self.assertFalse(self.selenium.find_element_by_id('id_title').is_displayed())
self.selenium.find_elements_by_link_text('Show')[0].click()
self.assertTrue(self.selenium.find_element_by_id('id_title').is_displayed())
self.assertEqual(self.selenium.find_element_by_id('fieldsetcollapser0').text, "Hide")
def test_first_field_focus(self):
"""JavaScript-assisted auto-focus on first usable form field."""
# First form field has a single widget
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_picture_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element_by_id('id_name')
)
# First form field has a MultiWidget
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_reservation_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element_by_id('id_start_date_0')
)
def test_cancel_delete_confirmation(self):
"Cancelling the deletion of an object takes the user back one page."
pizza = Pizza.objects.create(name="Double Cheese")
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element_by_class_name('deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element_by_class_name('cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
def test_cancel_delete_related_confirmation(self):
"""
Cancelling the deletion of an object with relations takes the user back
one page.
"""
pizza = Pizza.objects.create(name="Double Cheese")
topping1 = Topping.objects.create(name="Cheddar")
topping2 = Topping.objects.create(name="Mozzarella")
pizza.toppings.add(topping1, topping2)
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element_by_class_name('deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element_by_class_name('cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
self.assertEqual(Topping.objects.count(), 2)
def test_list_editable_popups(self):
"""
list_editable foreign keys have add/change popups.
"""
from selenium.webdriver.support.ui import Select
s1 = Section.objects.create(name='Test section')
Article.objects.create(
title='foo',
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=s1,
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_changelist'))
# Change popup
self.selenium.find_element_by_id('change_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Change section')
name_input = self.selenium.find_element_by_id('id_name')
name_input.clear()
name_input.send_keys('<i>edited section</i>')
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# Hide sidebar.
toggle_button = self.selenium.find_element_by_css_selector('#toggle-nav-sidebar')
toggle_button.click()
select = Select(self.selenium.find_element_by_id('id_form-0-section'))
self.assertEqual(select.first_selected_option.text, '<i>edited section</i>')
# Rendered select2 input.
select2_display = self.selenium.find_element_by_class_name('select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\n<i>edited section</i>')
# Add popup
self.selenium.find_element_by_id('add_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Add section')
self.selenium.find_element_by_id('id_name').send_keys('new section')
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element_by_id('id_form-0-section'))
self.assertEqual(select.first_selected_option.text, 'new section')
select2_display = self.selenium.find_element_by_class_name('select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\nnew section')
def test_inline_uuid_pk_edit_with_popup(self):
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element_by_id('change_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element_by_id('id_parent'))
self.assertEqual(select.first_selected_option.text, str(parent.id))
self.assertEqual(select.first_selected_option.get_attribute('value'), str(parent.id))
def test_inline_uuid_pk_add_with_popup(self):
from selenium.webdriver.support.ui import Select
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_relatedwithuuidpkmodel_add'))
self.selenium.find_element_by_id('add_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element_by_id('id_title').send_keys('test')
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element_by_id('id_parent'))
uuid_id = str(ParentWithUUIDPK.objects.first().id)
self.assertEqual(select.first_selected_option.text, uuid_id)
self.assertEqual(select.first_selected_option.get_attribute('value'), uuid_id)
def test_inline_uuid_pk_delete_with_popup(self):
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element_by_id('delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element_by_xpath('//input[@value="Yes, I’m sure"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element_by_id('id_parent'))
self.assertEqual(ParentWithUUIDPK.objects.count(), 0)
self.assertEqual(select.first_selected_option.text, '---------')
self.assertEqual(select.first_selected_option.get_attribute('value'), '')
def test_inline_with_popup_cancel_delete(self):
"""Clicking ""No, take me back" on a delete popup closes the window."""
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element_by_id('delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element_by_xpath('//a[text()="No, take me back"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
self.assertEqual(len(self.selenium.window_handles), 1)
def test_list_editable_raw_id_fields(self):
parent = ParentWithUUIDPK.objects.create(title='test')
parent2 = ParentWithUUIDPK.objects.create(title='test2')
RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_changelist', current_app=site2.name)
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element_by_id('lookup_id_form-0-parent').click()
self.wait_for_and_switch_to_popup()
# Select "parent2" in the popup.
self.selenium.find_element_by_link_text(str(parent2.pk)).click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# The newly selected pk should appear in the raw id input.
value = self.selenium.find_element_by_id('id_form-0-parent').get_attribute('value')
self.assertEqual(value, str(parent2.pk))
def test_input_element_font(self):
"""
Browsers' default stylesheets override the font of inputs. The admin
adds additional CSS to handle this.
"""
self.selenium.get(self.live_server_url + reverse('admin:login'))
element = self.selenium.find_element_by_id('id_username')
# Some browsers quotes the fonts, some don't.
fonts = [
font.strip().strip('"')
for font in element.value_of_css_property('font-family').split(',')
]
self.assertEqual(
fonts,
['Roboto', 'Lucida Grande', 'Verdana', 'Arial', 'sans-serif'],
)
def test_search_input_filtered_page(self):
Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='Grace Hopper', gender=1, alive=False)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
person_url = reverse('admin:admin_views_person_changelist') + '?q=Gui'
self.selenium.get(self.live_server_url + person_url)
self.assertGreater(
self.selenium.find_element_by_id('searchbar').rect['width'],
50,
)
@override_settings(ROOT_URLCONF='admin_views.urls')
class ReadonlyTest(AdminFieldExtractionMixin, TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_readonly_get(self):
response = self.client.get(reverse('admin:admin_views_post_add'))
self.assertNotContains(response, 'name="posted"')
# 3 fields + 2 submit buttons + 5 inline management form fields, + 2
# hidden fields for inlines + 1 field for the inline + 2 empty form
self.assertContains(response, "<input", count=16)
self.assertContains(response, formats.localize(datetime.date.today()))
self.assertContains(response, "<label>Awesomeness level:</label>")
self.assertContains(response, "Very awesome.")
self.assertContains(response, "Unknown coolness.")
self.assertContains(response, "foo")
# Multiline text in a readonly field gets <br> tags
self.assertContains(response, 'Multiline<br>test<br>string')
self.assertContains(response, '<div class="readonly">Multiline<br>html<br>content</div>', html=True)
self.assertContains(response, 'InlineMultiline<br>test<br>string')
self.assertContains(response, formats.localize(datetime.date.today() - datetime.timedelta(days=7)))
self.assertContains(response, '<div class="form-row field-coolness">')
self.assertContains(response, '<div class="form-row field-awesomeness_level">')
self.assertContains(response, '<div class="form-row field-posted">')
self.assertContains(response, '<div class="form-row field-value">')
self.assertContains(response, '<div class="form-row">')
self.assertContains(response, '<div class="help">', 3)
self.assertContains(
response,
'<div class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the content (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the date (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
p = Post.objects.create(title="I worked on readonly_fields", content="Its good stuff")
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
self.assertContains(response, "%d amount of cool" % p.pk)
def test_readonly_text_field(self):
p = Post.objects.create(
title="Readonly test", content="test",
readonly_content='test\r\n\r\ntest\r\n\r\ntest\r\n\r\ntest',
)
Link.objects.create(
url="http://www.djangoproject.com", post=p,
readonly_link_content="test\r\nlink",
)
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
# Checking readonly field.
self.assertContains(response, 'test<br><br>test<br><br>test<br><br>test')
# Checking readonly field in inline.
self.assertContains(response, 'test<br>link')
def test_readonly_post(self):
data = {
"title": "Django Got Readonly Fields",
"content": "This is an incredible development.",
"link_set-TOTAL_FORMS": "1",
"link_set-INITIAL_FORMS": "0",
"link_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 1)
p = Post.objects.get()
self.assertEqual(p.posted, datetime.date.today())
data["posted"] = "10-8-1990" # some date that's not today
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 2)
p = Post.objects.order_by('-id')[0]
self.assertEqual(p.posted, datetime.date.today())
def test_readonly_manytomany(self):
"Regression test for #13004"
response = self.client.get(reverse('admin:admin_views_pizza_add'))
self.assertEqual(response.status_code, 200)
def test_user_password_change_limited_queryset(self):
su = User.objects.filter(is_superuser=True)[0]
response = self.client.get(reverse('admin2:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 404)
def test_change_form_renders_correct_null_choice_value(self):
"""
Regression test for #17911.
"""
choice = Choice.objects.create(choice=None)
response = self.client.get(reverse('admin:admin_views_choice_change', args=(choice.pk,)))
self.assertContains(response, '<div class="readonly">No opinion</div>', html=True)
def test_readonly_foreignkey_links(self):
"""
ForeignKey readonly fields render as links if the target model is
registered in admin.
"""
chapter = Chapter.objects.create(
title='Chapter 1',
content='content',
book=Book.objects.create(name='Book 1'),
)
language = Language.objects.create(iso='_40', name='Test')
obj = ReadOnlyRelatedField.objects.create(
chapter=chapter,
language=language,
user=self.superuser,
)
response = self.client.get(
reverse('admin:admin_views_readonlyrelatedfield_change', args=(obj.pk,)),
)
# Related ForeignKey object registered in admin.
user_url = reverse('admin:auth_user_change', args=(self.superuser.pk,))
self.assertContains(
response,
'<div class="readonly"><a href="%s">super</a></div>' % user_url,
html=True,
)
# Related ForeignKey with the string primary key registered in admin.
language_url = reverse(
'admin:admin_views_language_change',
args=(quote(language.pk),),
)
self.assertContains(
response,
'<div class="readonly"><a href="%s">_40</a></div>' % language_url,
html=True,
)
# Related ForeignKey object not registered in admin.
self.assertContains(response, '<div class="readonly">Chapter 1</div>', html=True)
def test_readonly_manytomany_backwards_ref(self):
"""
Regression test for #16433 - backwards references for related objects
broke if the related field is read-only due to the help_text attribute
"""
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_topping_add'))
self.assertEqual(response.status_code, 200)
def test_readonly_manytomany_forwards_ref(self):
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_pizza_change', args=(pizza.pk,)))
self.assertContains(response, '<label>Toppings:</label>', html=True)
self.assertContains(response, '<div class="readonly">Salami</div>', html=True)
def test_readonly_onetoone_backwards_ref(self):
"""
Can reference a reverse OneToOneField in ModelAdmin.readonly_fields.
"""
v1 = Villain.objects.create(name='Adam')
pl = Plot.objects.create(name='Test Plot', team_leader=v1, contact=v1)
pd = PlotDetails.objects.create(details='Brand New Plot', plot=pl)
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
pd_url = reverse('admin:admin_views_plotdetails_change', args=(pd.pk,))
self.assertEqual(field.contents(), '<a href="%s">Brand New Plot</a>' % pd_url)
# The reverse relation also works if the OneToOneField is null.
pd.plot = None
pd.save()
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
self.assertEqual(field.contents(), '-') # default empty value
def test_readonly_field_overrides(self):
"""
Regression test for #22087 - ModelForm Meta overrides are ignored by
AdminReadonlyField
"""
p = FieldOverridePost.objects.create(title="Test Post", content="Test Content")
response = self.client.get(reverse('admin:admin_views_fieldoverridepost_change', args=(p.pk,)))
self.assertContains(response, '<div class="help">Overridden help text for the date</div>')
self.assertContains(response, '<label for="id_public">Overridden public label:</label>', html=True)
self.assertNotContains(response, 'Some help text for the date (with Unicode ŠĐĆŽćžšđ)')
def test_correct_autoescaping(self):
"""
Make sure that non-field readonly elements are properly autoescaped (#24461)
"""
section = Section.objects.create(name='<a>evil</a>')
response = self.client.get(reverse('admin:admin_views_section_change', args=(section.pk,)))
self.assertNotContains(response, "<a>evil</a>", status_code=200)
self.assertContains(response, "<a>evil</a>", status_code=200)
def test_label_suffix_translated(self):
pizza = Pizza.objects.create(name='Americano')
url = reverse('admin:admin_views_pizza_change', args=(pizza.pk,))
with self.settings(LANGUAGE_CODE='fr'):
response = self.client.get(url)
self.assertContains(response, '<label>Toppings\u00A0:</label>', html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class LimitChoicesToInAdminTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to_as_callable(self):
"""Test for ticket 2445 changes to admin."""
threepwood = Character.objects.create(
username='threepwood',
last_action=datetime.datetime.today() + datetime.timedelta(days=1),
)
marley = Character.objects.create(
username='marley',
last_action=datetime.datetime.today() - datetime.timedelta(days=1),
)
response = self.client.get(reverse('admin:admin_views_stumpjoke_add'))
# The allowed option should appear twice; the limited option should not appear.
self.assertContains(response, threepwood.username, count=2)
self.assertNotContains(response, marley.username)
@override_settings(ROOT_URLCONF='admin_views.urls')
class RawIdFieldsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to(self):
"""Regression test for 14880"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True,
leader=actor,
country="England")
Inquisition.objects.create(expected=False,
leader=actor,
country="Spain")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_inquisition"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step also tests integers, strings and booleans in the
# lookup query string; in model we define inquisition field to have a
# limit_choices_to option that includes a filter on a string field
# (inquisition__actor__name), a filter on an integer field
# (inquisition__actor__age), and a filter on a boolean field
# (inquisition__expected).
response2 = self.client.get(popup_url)
self.assertContains(response2, "Spain")
self.assertNotContains(response2, "England")
def test_limit_choices_to_isnull_false(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant0"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=0 gets parsed correctly from the
# lookup query string; in model we define defendant0 field to have a
# limit_choices_to option that includes "actor__title__isnull=False".
response2 = self.client.get(popup_url)
self.assertContains(response2, "Kilbraken")
self.assertNotContains(response2, "Palin")
def test_limit_choices_to_isnull_true(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant1"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=1 gets parsed correctly from the
# lookup query string; in model we define defendant1 field to have a
# limit_choices_to option that includes "actor__title__isnull=True".
response2 = self.client.get(popup_url)
self.assertNotContains(response2, "Kilbraken")
self.assertContains(response2, "Palin")
def test_list_display_method_same_name_as_reverse_accessor(self):
"""
Should be able to use a ModelAdmin method in list_display that has the
same name as a reverse model field ("sketch" in this case).
"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True, leader=actor, country="England")
response = self.client.get(reverse('admin:admin_views_inquisition_changelist'))
self.assertContains(response, 'list-display-sketch')
@override_settings(ROOT_URLCONF='admin_views.urls')
class UserAdminTest(TestCase):
"""
Tests user CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
})
new_user = User.objects.get(username='newuser')
self.assertRedirects(response, reverse('admin:auth_user_change', args=(new_user.pk,)))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_save_continue_editing_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_continue': '1',
})
new_user = User.objects.get(username='newuser')
new_user_url = reverse('admin:auth_user_change', args=(new_user.pk,))
self.assertRedirects(response, new_user_url, fetch_redirect_response=False)
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
response = self.client.get(new_user_url)
self.assertContains(
response,
'<li class="success">The user “<a href="%s">'
'%s</a>” was added successfully. You may edit it again below.</li>'
% (new_user_url, new_user),
html=True,
)
def test_password_mismatch(self):
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'mismatch',
})
self.assertEqual(response.status_code, 200)
self.assertFormError(response, 'adminform', 'password', [])
self.assertFormError(response, 'adminform', 'password2', ['The two password fields didn’t match.'])
def test_user_fk_add_popup(self):
"""User addition through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_add'))
self.assertContains(response, 'class="related-widget-wrapper-link add-related" id="add_id_owner"')
response = self.client.get(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
def test_user_fk_change_popup(self):
"""User change through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_change', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_change', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
self.assertContains(response, '"action": "change"')
def test_user_fk_delete_popup(self):
"""User deletion through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_delete', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_delete', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
data = {
'post': 'yes',
IS_POPUP_VAR: '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"action": "delete"')
def test_save_add_another_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_addanother': '1',
})
new_user = User.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_user_add'))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_user_permission_performance(self):
u = User.objects.all()[0]
# Don't depend on a warm cache, see #17377.
ContentType.objects.clear_cache()
with self.assertNumQueries(10):
response = self.client.get(reverse('admin:auth_user_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
def test_form_url_present_in_context(self):
u = User.objects.all()[0]
response = self.client.get(reverse('admin3:auth_user_password_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context['form_url'], 'pony')
@override_settings(ROOT_URLCONF='admin_views.urls')
class GroupAdminTest(TestCase):
"""
Tests group CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
group_count = Group.objects.count()
response = self.client.post(reverse('admin:auth_group_add'), {
'name': 'newgroup',
})
Group.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_group_changelist'))
self.assertEqual(Group.objects.count(), group_count + 1)
def test_group_permission_performance(self):
g = Group.objects.create(name="test_group")
# Ensure no queries are skipped due to cached content type for Group.
ContentType.objects.clear_cache()
with self.assertNumQueries(8):
response = self.client.get(reverse('admin:auth_group_change', args=(g.pk,)))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class CSSTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_field_prefix_css_classes(self):
"""
Fields have a CSS class name with a 'field-' prefix.
"""
response = self.client.get(reverse('admin:admin_views_post_add'))
# The main form
self.assertContains(response, 'class="form-row field-title"')
self.assertContains(response, 'class="form-row field-content"')
self.assertContains(response, 'class="form-row field-public"')
self.assertContains(response, 'class="form-row field-awesomeness_level"')
self.assertContains(response, 'class="form-row field-coolness"')
self.assertContains(response, 'class="form-row field-value"')
self.assertContains(response, 'class="form-row"') # The lambda function
# The tabular inline
self.assertContains(response, '<td class="field-url">')
self.assertContains(response, '<td class="field-posted">')
def test_index_css_classes(self):
"""
CSS class names are used for each app and model on the admin index
pages (#17050).
"""
# General index page
response = self.client.get(reverse('admin:index'))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
# App index page
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
def test_app_model_in_form_body_class(self):
"""
Ensure app and model tag are correctly read by change_form template
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_list_body_class(self):
"""
Ensure app and model tag are correctly read by change_list template
"""
response = self.client.get(reverse('admin:admin_views_section_changelist'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_delete_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by delete_confirmation
template
"""
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_app_index_body_class(self):
"""
Ensure app and model tag are correctly read by app_index template
"""
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<body class=" dashboard app-admin_views')
def test_app_model_in_delete_selected_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by
delete_selected_confirmation template
"""
action_data = {
ACTION_CHECKBOX_NAME: [self.s1.pk],
'action': 'delete_selected',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_section_changelist'), action_data)
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_changelist_field_classes(self):
"""
Cells of the change list table should contain the field name in their class attribute
Refs #11195.
"""
Podcast.objects.create(name="Django Dose", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertContains(response, '<th class="field-name">')
self.assertContains(response, '<td class="field-release_date nowrap">')
self.assertContains(response, '<td class="action-checkbox">')
try:
import docutils
except ImportError:
docutils = None
@unittest.skipUnless(docutils, "no docutils installed.")
@override_settings(ROOT_URLCONF='admin_views.urls')
@modify_settings(INSTALLED_APPS={'append': ['django.contrib.admindocs', 'django.contrib.flatpages']})
class AdminDocsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_tags(self):
response = self.client.get(reverse('django-admindocs-tags'))
# The builtin tag group exists
self.assertContains(response, "<h2>Built-in tags</h2>", count=2, html=True)
# A builtin tag exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-autoescape">autoescape</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-autoescape">autoescape</a></li>', html=True)
# An app tag exists in both the index and detail
self.assertContains(response, '<h3 id="flatpages-get_flatpages">get_flatpages</h3>', html=True)
self.assertContains(response, '<li><a href="#flatpages-get_flatpages">get_flatpages</a></li>', html=True)
# The admin list tag group exists
self.assertContains(response, "<h2>admin_list</h2>", count=2, html=True)
# An admin list tag exists in both the index and detail
self.assertContains(response, '<h3 id="admin_list-admin_actions">admin_actions</h3>', html=True)
self.assertContains(response, '<li><a href="#admin_list-admin_actions">admin_actions</a></li>', html=True)
def test_filters(self):
response = self.client.get(reverse('django-admindocs-filters'))
# The builtin filter group exists
self.assertContains(response, "<h2>Built-in filters</h2>", count=2, html=True)
# A builtin filter exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-add">add</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-add">add</a></li>', html=True)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
USE_I18N=False,
)
class ValidXHTMLTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_lang_name_present(self):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertNotContains(response, ' lang=""')
self.assertNotContains(response, ' xml:lang=""')
@override_settings(ROOT_URLCONF='admin_views.urls', USE_THOUSAND_SEPARATOR=True)
class DateHierarchyTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def assert_non_localized_year(self, response, year):
"""
The year is not localized with USE_THOUSAND_SEPARATOR (#15234).
"""
self.assertNotContains(response, formats.number_format(year))
def assert_contains_year_link(self, response, date):
self.assertContains(response, '?release_date__year=%d"' % date.year)
def assert_contains_month_link(self, response, date):
self.assertContains(
response, '?release_date__month=%d&release_date__year=%d"' % (
date.month, date.year))
def assert_contains_day_link(self, response, date):
self.assertContains(
response, '?release_date__day=%d&'
'release_date__month=%d&release_date__year=%d"' % (
date.day, date.month, date.year))
def test_empty(self):
"""
No date hierarchy links display with empty changelist.
"""
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
self.assertNotContains(response, 'release_date__year=')
self.assertNotContains(response, 'release_date__month=')
self.assertNotContains(response, 'release_date__day=')
def test_single(self):
"""
Single day-level date hierarchy appears for single object.
"""
DATE = datetime.date(2000, 6, 30)
Podcast.objects.create(release_date=DATE)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
self.assert_contains_day_link(response, DATE)
self.assert_non_localized_year(response, 2000)
def test_within_month(self):
"""
day-level links appear for changelist within single month.
"""
DATES = (datetime.date(2000, 6, 30),
datetime.date(2000, 6, 15),
datetime.date(2000, 6, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
for date in DATES:
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_within_year(self):
"""
month-level links appear for changelist within single year.
"""
DATES = (datetime.date(2000, 1, 30),
datetime.date(2000, 3, 15),
datetime.date(2000, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
# no day-level links
self.assertNotContains(response, 'release_date__day=')
for date in DATES:
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_multiple_years(self):
"""
year-level links appear for year-spanning changelist.
"""
DATES = (datetime.date(2001, 1, 30),
datetime.date(2003, 3, 15),
datetime.date(2005, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
# no day/month-level links
self.assertNotContains(response, 'release_date__day=')
self.assertNotContains(response, 'release_date__month=')
for date in DATES:
self.assert_contains_year_link(response, date)
# and make sure GET parameters still behave correctly
for date in DATES:
url = '%s?release_date__year=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year)
response = self.client.get(url)
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
url = '%s?release_date__year=%d&release_date__month=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year, date.month)
response = self.client.get(url)
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
def test_related_field(self):
questions_data = (
# (posted data, number of answers),
(datetime.date(2001, 1, 30), 0),
(datetime.date(2003, 3, 15), 1),
(datetime.date(2005, 5, 3), 2),
)
for date, answer_count in questions_data:
question = Question.objects.create(posted=date)
for i in range(answer_count):
question.answer_set.create()
response = self.client.get(reverse('admin:admin_views_answer_changelist'))
for date, answer_count in questions_data:
link = '?question__posted__year=%d"' % date.year
if answer_count > 0:
self.assertContains(response, link)
else:
self.assertNotContains(response, link)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomSaveRelatedTests(TestCase):
"""
One can easily customize the way related objects are saved.
Refs #16115.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_should_be_able_to_edit_related_objects_on_add_view(self):
post = {
'child_set-TOTAL_FORMS': '3',
'child_set-INITIAL_FORMS': '0',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-1-name': 'Catherine',
}
self.client.post(reverse('admin:admin_views_parent_add'), post)
self.assertEqual(1, Parent.objects.count())
self.assertEqual(2, Child.objects.count())
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_change_view(self):
parent = Parent.objects.create(name='Josh Stone')
paul = Child.objects.create(parent=parent, name='Paul')
catherine = Child.objects.create(parent=parent, name='Catherine')
post = {
'child_set-TOTAL_FORMS': '5',
'child_set-INITIAL_FORMS': '2',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-0-id': paul.id,
'child_set-1-name': 'Catherine',
'child_set-1-id': catherine.id,
}
self.client.post(reverse('admin:admin_views_parent_change', args=(parent.id,)), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_changelist_view(self):
parent = Parent.objects.create(name='Josh Rock')
Child.objects.create(parent=parent, name='Paul')
Child.objects.create(parent=parent, name='Catherine')
post = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '1',
'form-MAX_NUM_FORMS': '0',
'form-0-id': parent.id,
'form-0-name': 'Josh Stone',
'_save': 'Save'
}
self.client.post(reverse('admin:admin_views_parent_changelist'), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewLogoutTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def test_logout(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, 'registration/logged_out.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:logout'))
self.assertFalse(response.context['has_permission'])
self.assertNotContains(response, 'user-tools') # user-tools div shouldn't visible.
def test_client_logout_url_can_be_used_to_login(self):
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 302) # we should be redirected to the login page.
# follow the redirect and test results.
response = self.client.get(reverse('admin:logout'), follow=True)
self.assertContains(
response,
'<input type="hidden" name="next" value="%s">' % reverse('admin:index'),
)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:login'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminUserMessageTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def send_message(self, level):
"""
Helper that sends a post to the dummy test methods and asserts that a
message with the level has appeared in the response.
"""
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_%s' % level,
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="%s">Test %s</li>' % (level, level),
html=True)
@override_settings(MESSAGE_LEVEL=10) # Set to DEBUG for this request
def test_message_debug(self):
self.send_message('debug')
def test_message_info(self):
self.send_message('info')
def test_message_success(self):
self.send_message('success')
def test_message_warning(self):
self.send_message('warning')
def test_message_error(self):
self.send_message('error')
def test_message_extra_tags(self):
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_extra_tags',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="extra_tag info">Test tags</li>',
html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminKeepChangeListFiltersTests(TestCase):
admin_site = site
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
def setUp(self):
self.client.force_login(self.superuser)
def assertURLEqual(self, url1, url2, msg_prefix=''):
"""
Assert that two URLs are equal despite the ordering
of their querystring. Refs #22360.
"""
parsed_url1 = urlparse(url1)
path1 = parsed_url1.path
parsed_qs1 = dict(parse_qsl(parsed_url1.query))
parsed_url2 = urlparse(url2)
path2 = parsed_url2.path
parsed_qs2 = dict(parse_qsl(parsed_url2.query))
for parsed_qs in [parsed_qs1, parsed_qs2]:
if '_changelist_filters' in parsed_qs:
changelist_filters = parsed_qs['_changelist_filters']
parsed_filters = dict(parse_qsl(changelist_filters))
parsed_qs['_changelist_filters'] = parsed_filters
self.assertEqual(path1, path2)
self.assertEqual(parsed_qs1, parsed_qs2)
def test_assert_url_equal(self):
# Test equality.
change_user_url = reverse('admin:auth_user_change', args=(self.joepublicuser.pk,))
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
)
)
# Test inequality.
with self.assertRaises(AssertionError):
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D1%26is_superuser__exact%3D1'.format(
change_user_url
)
)
# Ignore scheme and host.
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url)
)
# Ignore ordering of querystring.
self.assertURLEqual(
'{}?is_staff__exact=0&is_superuser__exact=0'.format(reverse('admin:auth_user_changelist')),
'{}?is_superuser__exact=0&is_staff__exact=0'.format(reverse('admin:auth_user_changelist'))
)
# Ignore ordering of _changelist_filters.
self.assertURLEqual(
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url),
'{}?_changelist_filters=is_superuser__exact%3D0%26is_staff__exact%3D0'.format(change_user_url)
)
def get_changelist_filters(self):
return {
'is_superuser__exact': 0,
'is_staff__exact': 0,
}
def get_changelist_filters_querystring(self):
return urlencode(self.get_changelist_filters())
def get_preserved_filters_querystring(self):
return urlencode({
'_changelist_filters': self.get_changelist_filters_querystring()
})
def get_sample_user_id(self):
return self.joepublicuser.pk
def get_changelist_url(self):
return '%s?%s' % (
reverse('admin:auth_user_changelist',
current_app=self.admin_site.name),
self.get_changelist_filters_querystring(),
)
def get_add_url(self, add_preserved_filters=True):
url = reverse('admin:auth_user_add', current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_change_url(self, user_id=None, add_preserved_filters=True):
if user_id is None:
user_id = self.get_sample_user_id()
url = reverse('admin:auth_user_change', args=(user_id,), current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_history_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_history', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def get_delete_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_delete', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def test_changelist_view(self):
response = self.client.get(self.get_changelist_url())
self.assertEqual(response.status_code, 200)
# Check the `change_view` link has the correct querystring.
detail_link = re.search(
'<a href="(.*?)">{}</a>'.format(self.joepublicuser.username),
response.content.decode()
)
self.assertURLEqual(detail_link[1], self.get_change_url())
def test_change_view(self):
# Get the `change_view`.
response = self.client.get(self.get_change_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
# Check the history link.
history_link = re.search(
'<a href="(.*?)" class="historylink">History</a>',
response.content.decode()
)
self.assertURLEqual(history_link[1], self.get_history_url())
# Check the delete link.
delete_link = re.search(
'<a href="(.*?)" class="deletelink">Delete</a>',
response.content.decode()
)
self.assertURLEqual(delete_link[1], self.get_delete_url())
# Test redirect on "Save".
post_data = {
'username': 'joepublic',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
}
post_data['_save'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_changelist_url())
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['_continue'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_change_url())
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['_addanother'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_change_view_without_preserved_filters(self):
response = self.client.get(self.get_change_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_add_view(self):
# Get the `add_view`.
response = self.client.get(self.get_add_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
post_data = {
'username': 'dummy',
'password1': 'test',
'password2': 'test',
}
# Test redirect on "Save".
post_data['_save'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy').pk))
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['username'] = 'dummy2'
post_data['_continue'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy2').pk))
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['username'] = 'dummy3'
post_data['_addanother'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_add_view_without_preserved_filters(self):
response = self.client.get(self.get_add_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_delete_view(self):
# Test redirect on "Delete".
response = self.client.post(self.get_delete_url(), {'post': 'yes'})
self.assertRedirects(response, self.get_changelist_url())
def test_url_prefix(self):
context = {
'preserved_filters': self.get_preserved_filters_querystring(),
'opts': User._meta,
}
prefixes = ('', '/prefix/', '/後台/')
for prefix in prefixes:
with self.subTest(prefix=prefix), override_script_prefix(prefix):
url = reverse('admin:auth_user_changelist', current_app=self.admin_site.name)
self.assertURLEqual(
self.get_changelist_url(),
add_preserved_filters(context, url),
)
class NamespacedAdminKeepChangeListFiltersTests(AdminKeepChangeListFiltersTests):
admin_site = site2
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestLabelVisibility(TestCase):
""" #11277 -Labels of hidden fields in admin were not hidden. """
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_all_fields_visible(self):
response = self.client.get(reverse('admin:admin_views_emptymodelvisible_add'))
self.assert_fieldline_visible(response)
self.assert_field_visible(response, 'first')
self.assert_field_visible(response, 'second')
def test_all_fields_hidden(self):
response = self.client.get(reverse('admin:admin_views_emptymodelhidden_add'))
self.assert_fieldline_hidden(response)
self.assert_field_hidden(response, 'first')
self.assert_field_hidden(response, 'second')
def test_mixin(self):
response = self.client.get(reverse('admin:admin_views_emptymodelmixin_add'))
self.assert_fieldline_visible(response)
self.assert_field_hidden(response, 'first')
self.assert_field_visible(response, 'second')
def assert_field_visible(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s">' % field_name)
def assert_field_hidden(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s hidden">' % field_name)
def assert_fieldline_visible(self, response):
self.assertContains(response, '<div class="form-row field-first field-second">')
def assert_fieldline_hidden(self, response):
self.assertContains(response, '<div class="form-row hidden')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewOnSiteTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_add_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data.
Also, assertFormError() and assertFormsetError() is usable for admin
forms and formsets.
"""
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test1',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': '',
'dependentchild_set-0-family_name': 'Test2',
}
response = self.client.post(reverse('admin:admin_views_parentwithdependentchildren_add'), post_data)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
msg = "The form 'adminform' in context 0 does not contain the non-field error 'Error'"
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'adminform', None, ['Error'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
msg = "The formset 'inline_admin_formset' in context 12 does not contain any non-form errors."
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'inline_admin_formset', None, None, ['Error'])
def test_change_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data
"""
pwdc = ParentWithDependentChildren.objects.create(some_required_info=6, family_name='Test1')
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test2',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': str(pwdc.id),
'dependentchild_set-0-family_name': 'Test1',
}
response = self.client.post(
reverse('admin:admin_views_parentwithdependentchildren_change', args=(pwdc.id,)), post_data
)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
def test_check(self):
"The view_on_site value is either a boolean or a callable"
try:
admin = CityAdmin(City, AdminSite())
CityAdmin.view_on_site = True
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = False
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = lambda obj: obj.get_absolute_url()
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = []
self.assertEqual(admin.check(), [
Error(
"The value of 'view_on_site' must be a callable or a boolean value.",
obj=CityAdmin,
id='admin.E025',
),
])
finally:
# Restore the original values for the benefit of other tests.
CityAdmin.view_on_site = True
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, 1)))
def test_true(self):
"The default behavior is followed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_worker_change', args=(self.w1.pk,)))
self.assertContains(response, '"/worker/%s/%s/"' % (self.w1.surname, self.w1.name))
def test_missing_get_absolute_url(self):
"None is returned if model doesn't have get_absolute_url"
model_admin = ModelAdmin(Worker, None)
self.assertIsNone(model_admin.get_view_on_site_url(Worker()))
@override_settings(ROOT_URLCONF='admin_views.urls')
class InlineAdminViewOnSiteTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_state_change', args=(self.s1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_true(self):
"The 'View on site' button is displayed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.r1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
self.assertContains(response, '"/worker_inline/%s/%s/"' % (self.w1.surname, self.w1.name))
@override_settings(ROOT_URLCONF='admin_views.urls')
class GetFormsetsWithInlinesArgumentTest(TestCase):
"""
#23934 - When adding a new model instance in the admin, the 'obj' argument
of get_formsets_with_inlines() should be None. When changing, it should be
equal to the existing model instance.
The GetFormsetsArgumentCheckingAdmin ModelAdmin throws an exception
if obj is not None during add_view or obj is None during change_view.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_explicitly_provided_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
def test_implicitly_generated_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSiteFinalCatchAllPatternTests(TestCase):
"""
Verifies the behaviour of the admin catch-all view.
* Anonynous/non-staff users are redirected to login for all URLs, whether
otherwise valid or not.
* APPEND_SLASH is applied for staff if needed.
* Otherwise Http404.
* Catch-all view disabled via AdminSite.final_catch_all_view.
"""
def test_unknown_url_redirects_login_if_not_authenticated(self):
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), unknown_url))
def test_unknown_url_404_if_authenticated(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_known_url_missing_slash_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')[:-1]
response = self.client.get(known_url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_non_admin_url_shares_url_prefix(self):
url = reverse('non_admin')[:-1]
response = self.client.get(url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')[:-1]
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1], SCRIPT_NAME='/prefix/')
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True, FORCE_SCRIPT_NAME='/prefix/')
def test_missing_slash_append_slash_true_force_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_non_staff_user(self):
user = User.objects.create_user(
username='user',
password='secret',
email='[email protected]',
is_staff=False,
)
self.client.force_login(user)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, '/test_admin/admin/login/?next=/test_admin/admin/admin_views/article')
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_single_model_no_append_slash(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin9:admin_views_actor_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Same tests above with final_catch_all_view=False.
def test_unknown_url_404_if_not_authenticated_without_final_catch_all_view(self):
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_unknown_url_404_if_authenticated_without_final_catch_all_view(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), known_url))
def test_known_url_missing_slash_redirects_with_slash_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, fetch_redirect_response=False)
def test_non_admin_url_shares_url_prefix_without_final_catch_all_view(self):
url = reverse('non_admin10')
response = self.client.get(url[:-1])
self.assertRedirects(response, url, status_code=301)
def test_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')[:-1]
response = self.client.get(url)
# Matches test_admin/admin10/admin_views/article/<path:object_id>/
self.assertRedirects(response, url + '/', status_code=301, fetch_redirect_response=False)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Outside admin.
def test_non_admin_url_404_if_not_authenticated(self):
unknown_url = '/unknown/'
response = self.client.get(unknown_url)
# Does not redirect to the admin login.
self.assertEqual(response.status_code, 404)
|
c128929f056f868093958df3654d3051691eb4d759d3a9172341cba8c0166c5e | import os
from io import StringIO
from unittest import mock
from admin_scripts.tests import AdminScriptTestCase
from django.apps import apps
from django.core import management
from django.core.checks import Tags
from django.core.management import BaseCommand, CommandError, find_commands
from django.core.management.utils import (
find_command, get_random_secret_key, is_ignored_path,
normalize_path_patterns, popen_wrapper,
)
from django.db import connection
from django.test import SimpleTestCase, override_settings
from django.test.utils import captured_stderr, extend_sys_path, ignore_warnings
from django.utils import translation
from django.utils.deprecation import RemovedInDjango41Warning
from .management.commands import dance
# A minimal set of apps to avoid system checks running on all apps.
@override_settings(
INSTALLED_APPS=[
'django.contrib.auth',
'django.contrib.contenttypes',
'user_commands',
],
)
class CommandTests(SimpleTestCase):
def test_command(self):
out = StringIO()
management.call_command('dance', stdout=out)
self.assertIn("I don't feel like dancing Rock'n'Roll.\n", out.getvalue())
def test_command_style(self):
out = StringIO()
management.call_command('dance', style='Jive', stdout=out)
self.assertIn("I don't feel like dancing Jive.\n", out.getvalue())
# Passing options as arguments also works (thanks argparse)
management.call_command('dance', '--style', 'Jive', stdout=out)
self.assertIn("I don't feel like dancing Jive.\n", out.getvalue())
def test_language_preserved(self):
with translation.override('fr'):
management.call_command('dance', verbosity=0)
self.assertEqual(translation.get_language(), 'fr')
def test_explode(self):
""" An unknown command raises CommandError """
with self.assertRaisesMessage(CommandError, "Unknown command: 'explode'"):
management.call_command(('explode',))
def test_system_exit(self):
""" Exception raised in a command should raise CommandError with
call_command, but SystemExit when run from command line
"""
with self.assertRaises(CommandError) as cm:
management.call_command('dance', example="raise")
self.assertEqual(cm.exception.returncode, 3)
dance.Command.requires_system_checks = []
try:
with captured_stderr() as stderr, self.assertRaises(SystemExit) as cm:
management.ManagementUtility(['manage.py', 'dance', '--example=raise']).execute()
self.assertEqual(cm.exception.code, 3)
finally:
dance.Command.requires_system_checks = '__all__'
self.assertIn("CommandError", stderr.getvalue())
def test_no_translations_deactivate_translations(self):
"""
When the Command handle method is decorated with @no_translations,
translations are deactivated inside the command.
"""
current_locale = translation.get_language()
with translation.override('pl'):
result = management.call_command('no_translations')
self.assertIsNone(result)
self.assertEqual(translation.get_language(), current_locale)
def test_find_command_without_PATH(self):
"""
find_command should still work when the PATH environment variable
doesn't exist (#22256).
"""
current_path = os.environ.pop('PATH', None)
try:
self.assertIsNone(find_command('_missing_'))
finally:
if current_path is not None:
os.environ['PATH'] = current_path
def test_discover_commands_in_eggs(self):
"""
Management commands can also be loaded from Python eggs.
"""
egg_dir = '%s/eggs' % os.path.dirname(__file__)
egg_name = '%s/basic.egg' % egg_dir
with extend_sys_path(egg_name):
with self.settings(INSTALLED_APPS=['commandegg']):
cmds = find_commands(os.path.join(apps.get_app_config('commandegg').path, 'management'))
self.assertEqual(cmds, ['eggcommand'])
def test_call_command_option_parsing(self):
"""
When passing the long option name to call_command, the available option
key is the option dest name (#22985).
"""
out = StringIO()
management.call_command('dance', stdout=out, opt_3=True)
self.assertIn("option3", out.getvalue())
self.assertNotIn("opt_3", out.getvalue())
self.assertNotIn("opt-3", out.getvalue())
def test_call_command_option_parsing_non_string_arg(self):
"""
It should be possible to pass non-string arguments to call_command.
"""
out = StringIO()
management.call_command('dance', 1, verbosity=0, stdout=out)
self.assertIn("You passed 1 as a positional argument.", out.getvalue())
def test_calling_a_command_with_only_empty_parameter_should_ends_gracefully(self):
out = StringIO()
management.call_command('hal', "--empty", stdout=out)
self.assertEqual(out.getvalue(), "\nDave, I can't do that.\n")
def test_calling_command_with_app_labels_and_parameters_should_be_ok(self):
out = StringIO()
management.call_command('hal', 'myapp', "--verbosity", "3", stdout=out)
self.assertIn("Dave, my mind is going. I can feel it. I can feel it.\n", out.getvalue())
def test_calling_command_with_parameters_and_app_labels_at_the_end_should_be_ok(self):
out = StringIO()
management.call_command('hal', "--verbosity", "3", "myapp", stdout=out)
self.assertIn("Dave, my mind is going. I can feel it. I can feel it.\n", out.getvalue())
def test_calling_a_command_with_no_app_labels_and_parameters_should_raise_a_command_error(self):
with self.assertRaises(CommandError):
management.call_command('hal')
def test_output_transaction(self):
output = management.call_command('transaction', stdout=StringIO(), no_color=True)
self.assertTrue(output.strip().startswith(connection.ops.start_transaction_sql()))
self.assertTrue(output.strip().endswith(connection.ops.end_transaction_sql()))
def test_call_command_no_checks(self):
"""
By default, call_command should not trigger the check framework, unless
specifically asked.
"""
self.counter = 0
def patched_check(self_, **kwargs):
self.counter += 1
self.kwargs = kwargs
saved_check = BaseCommand.check
BaseCommand.check = patched_check
try:
management.call_command("dance", verbosity=0)
self.assertEqual(self.counter, 0)
management.call_command("dance", verbosity=0, skip_checks=False)
self.assertEqual(self.counter, 1)
self.assertEqual(self.kwargs, {})
finally:
BaseCommand.check = saved_check
def test_requires_system_checks_empty(self):
with mock.patch('django.core.management.base.BaseCommand.check') as mocked_check:
management.call_command('no_system_checks')
self.assertIs(mocked_check.called, False)
def test_requires_system_checks_specific(self):
with mock.patch('django.core.management.base.BaseCommand.check') as mocked_check:
management.call_command('specific_system_checks')
mocked_check.called_once_with(tags=[Tags.staticfiles, Tags.models])
def test_requires_system_checks_invalid(self):
class Command(BaseCommand):
requires_system_checks = 'x'
msg = 'requires_system_checks must be a list or tuple.'
with self.assertRaisesMessage(TypeError, msg):
Command()
def test_check_migrations(self):
requires_migrations_checks = dance.Command.requires_migrations_checks
self.assertIs(requires_migrations_checks, False)
try:
with mock.patch.object(BaseCommand, 'check_migrations') as check_migrations:
management.call_command('dance', verbosity=0)
self.assertFalse(check_migrations.called)
dance.Command.requires_migrations_checks = True
management.call_command('dance', verbosity=0)
self.assertTrue(check_migrations.called)
finally:
dance.Command.requires_migrations_checks = requires_migrations_checks
def test_call_command_unrecognized_option(self):
msg = (
'Unknown option(s) for dance command: unrecognized. Valid options '
'are: example, force_color, help, integer, no_color, opt_3, '
'option3, pythonpath, settings, skip_checks, stderr, stdout, '
'style, traceback, verbosity, version.'
)
with self.assertRaisesMessage(TypeError, msg):
management.call_command('dance', unrecognized=1)
msg = (
'Unknown option(s) for dance command: unrecognized, unrecognized2. '
'Valid options are: example, force_color, help, integer, no_color, '
'opt_3, option3, pythonpath, settings, skip_checks, stderr, '
'stdout, style, traceback, verbosity, version.'
)
with self.assertRaisesMessage(TypeError, msg):
management.call_command('dance', unrecognized=1, unrecognized2=1)
def test_call_command_with_required_parameters_in_options(self):
out = StringIO()
management.call_command('required_option', need_me='foo', needme2='bar', stdout=out)
self.assertIn('need_me', out.getvalue())
self.assertIn('needme2', out.getvalue())
def test_call_command_with_required_parameters_in_mixed_options(self):
out = StringIO()
management.call_command('required_option', '--need-me=foo', needme2='bar', stdout=out)
self.assertIn('need_me', out.getvalue())
self.assertIn('needme2', out.getvalue())
def test_command_add_arguments_after_common_arguments(self):
out = StringIO()
management.call_command('common_args', stdout=out)
self.assertIn('Detected that --version already exists', out.getvalue())
def test_mutually_exclusive_group_required_options(self):
out = StringIO()
management.call_command('mutually_exclusive_required', foo_id=1, stdout=out)
self.assertIn('foo_id', out.getvalue())
management.call_command('mutually_exclusive_required', foo_name='foo', stdout=out)
self.assertIn('foo_name', out.getvalue())
msg = (
'Error: one of the arguments --foo-id --foo-name --foo-list '
'--append_const --const --count --flag_false --flag_true is '
'required'
)
with self.assertRaisesMessage(CommandError, msg):
management.call_command('mutually_exclusive_required', stdout=out)
def test_mutually_exclusive_group_required_const_options(self):
tests = [
('append_const', [42]),
('const', 31),
('count', 1),
('flag_false', False),
('flag_true', True),
]
for arg, value in tests:
out = StringIO()
expected_output = '%s=%s' % (arg, value)
with self.subTest(arg=arg):
management.call_command(
'mutually_exclusive_required',
'--%s' % arg,
stdout=out,
)
self.assertIn(expected_output, out.getvalue())
out.truncate(0)
management.call_command(
'mutually_exclusive_required',
**{arg: value, 'stdout': out},
)
self.assertIn(expected_output, out.getvalue())
def test_required_list_option(self):
tests = [
(('--foo-list', [1, 2]), {}),
((), {'foo_list': [1, 2]}),
]
for command in ['mutually_exclusive_required', 'required_list_option']:
for args, kwargs in tests:
with self.subTest(command=command, args=args, kwargs=kwargs):
out = StringIO()
management.call_command(
command,
*args,
**{**kwargs, 'stdout': out},
)
self.assertIn('foo_list=[1, 2]', out.getvalue())
def test_required_const_options(self):
args = {
'append_const': [42],
'const': 31,
'count': 1,
'flag_false': False,
'flag_true': True,
}
expected_output = '\n'.join(
'%s=%s' % (arg, value) for arg, value in args.items()
)
out = StringIO()
management.call_command(
'required_constant_option',
'--append_const',
'--const',
'--count',
'--flag_false',
'--flag_true',
stdout=out,
)
self.assertIn(expected_output, out.getvalue())
out.truncate(0)
management.call_command('required_constant_option', **{**args, 'stdout': out})
self.assertIn(expected_output, out.getvalue())
def test_subparser(self):
out = StringIO()
management.call_command('subparser', 'foo', 12, stdout=out)
self.assertIn('bar', out.getvalue())
def test_subparser_dest_args(self):
out = StringIO()
management.call_command('subparser_dest', 'foo', bar=12, stdout=out)
self.assertIn('bar', out.getvalue())
def test_subparser_dest_required_args(self):
out = StringIO()
management.call_command('subparser_required', 'foo_1', 'foo_2', bar=12, stdout=out)
self.assertIn('bar', out.getvalue())
def test_subparser_invalid_option(self):
msg = "invalid choice: 'test' (choose from 'foo')"
with self.assertRaisesMessage(CommandError, msg):
management.call_command('subparser', 'test', 12)
msg = 'Error: the following arguments are required: subcommand'
with self.assertRaisesMessage(CommandError, msg):
management.call_command('subparser_dest', subcommand='foo', bar=12)
def test_create_parser_kwargs(self):
"""BaseCommand.create_parser() passes kwargs to CommandParser."""
epilog = 'some epilog text'
parser = BaseCommand().create_parser('prog_name', 'subcommand', epilog=epilog)
self.assertEqual(parser.epilog, epilog)
def test_outputwrapper_flush(self):
out = StringIO()
with mock.patch.object(out, 'flush') as mocked_flush:
management.call_command('outputwrapper', stdout=out)
self.assertIn('Working...', out.getvalue())
self.assertIs(mocked_flush.called, True)
class CommandRunTests(AdminScriptTestCase):
"""
Tests that need to run by simulating the command line, not by call_command.
"""
def test_script_prefix_set_in_commands(self):
self.write_settings('settings.py', apps=['user_commands'], sdict={
'ROOT_URLCONF': '"user_commands.urls"',
'FORCE_SCRIPT_NAME': '"/PREFIX/"',
})
out, err = self.run_manage(['reverse_url'])
self.assertNoOutput(err)
self.assertEqual(out.strip(), '/PREFIX/some/url/')
def test_disallowed_abbreviated_options(self):
"""
To avoid conflicts with custom options, commands don't allow
abbreviated forms of the --setting and --pythonpath options.
"""
self.write_settings('settings.py', apps=['user_commands'])
out, err = self.run_manage(['set_option', '--set', 'foo'])
self.assertNoOutput(err)
self.assertEqual(out.strip(), 'Set foo')
def test_skip_checks(self):
self.write_settings('settings.py', apps=['django.contrib.staticfiles', 'user_commands'], sdict={
# (staticfiles.E001) The STATICFILES_DIRS setting is not a tuple or
# list.
'STATICFILES_DIRS': '"foo"',
})
out, err = self.run_manage(['set_option', '--skip-checks', '--set', 'foo'])
self.assertNoOutput(err)
self.assertEqual(out.strip(), 'Set foo')
class UtilsTests(SimpleTestCase):
def test_no_existent_external_program(self):
msg = 'Error executing a_42_command_that_doesnt_exist_42'
with self.assertRaisesMessage(CommandError, msg):
popen_wrapper(['a_42_command_that_doesnt_exist_42'])
def test_get_random_secret_key(self):
key = get_random_secret_key()
self.assertEqual(len(key), 50)
for char in key:
self.assertIn(char, 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)')
def test_is_ignored_path_true(self):
patterns = (
['foo/bar/baz'],
['baz'],
['foo/bar/baz'],
['*/baz'],
['*'],
['b?z'],
['[abc]az'],
['*/ba[!z]/baz'],
)
for ignore_patterns in patterns:
with self.subTest(ignore_patterns=ignore_patterns):
self.assertIs(is_ignored_path('foo/bar/baz', ignore_patterns=ignore_patterns), True)
def test_is_ignored_path_false(self):
self.assertIs(is_ignored_path('foo/bar/baz', ignore_patterns=['foo/bar/bat', 'bar', 'flub/blub']), False)
def test_normalize_path_patterns_truncates_wildcard_base(self):
expected = [os.path.normcase(p) for p in ['foo/bar', 'bar/*/']]
self.assertEqual(normalize_path_patterns(['foo/bar/*', 'bar/*/']), expected)
class DeprecationTests(SimpleTestCase):
def test_requires_system_checks_warning(self):
class Command(BaseCommand):
pass
msg = (
"Using a boolean value for requires_system_checks is deprecated. "
"Use '__all__' instead of True, and [] (an empty list) instead of "
"False."
)
for value in [False, True]:
Command.requires_system_checks = value
with self.assertRaisesMessage(RemovedInDjango41Warning, msg):
Command()
@ignore_warnings(category=RemovedInDjango41Warning)
def test_requires_system_checks_true(self):
class Command(BaseCommand):
requires_system_checks = True
def handle(self, *args, **options):
pass
command = Command()
with mock.patch('django.core.management.base.BaseCommand.check') as mocked_check:
management.call_command(command, skip_checks=False)
mocked_check.assert_called_once_with()
@ignore_warnings(category=RemovedInDjango41Warning)
def test_requires_system_checks_false(self):
class Command(BaseCommand):
requires_system_checks = False
def handle(self, *args, **options):
pass
command = Command()
with mock.patch('django.core.management.base.BaseCommand.check') as mocked_check:
management.call_command(command)
self.assertIs(mocked_check.called, False)
|
375a284f2affedea1e1a5a5bac3e32e40980833a454ac4cb68bf90a2802e2477 | from django.db import models
from .fields import (
ArrayField, BigIntegerRangeField, CICharField, CIEmailField, CITextField,
DateRangeField, DateTimeRangeField, DecimalRangeField, EnumField,
HStoreField, IntegerRangeField, SearchVectorField,
)
class Tag:
def __init__(self, tag_id):
self.tag_id = tag_id
def __eq__(self, other):
return isinstance(other, Tag) and self.tag_id == other.tag_id
class TagField(models.SmallIntegerField):
def from_db_value(self, value, expression, connection):
if value is None:
return value
return Tag(int(value))
def to_python(self, value):
if isinstance(value, Tag):
return value
if value is None:
return value
return Tag(int(value))
def get_prep_value(self, value):
return value.tag_id
class PostgreSQLModel(models.Model):
class Meta:
abstract = True
required_db_vendor = 'postgresql'
class IntegerArrayModel(PostgreSQLModel):
field = ArrayField(models.IntegerField(), default=list, blank=True)
class NullableIntegerArrayModel(PostgreSQLModel):
field = ArrayField(models.IntegerField(), blank=True, null=True)
field_nested = ArrayField(ArrayField(models.IntegerField(null=True)), null=True)
order = models.IntegerField(null=True)
class CharArrayModel(PostgreSQLModel):
field = ArrayField(models.CharField(max_length=10))
class DateTimeArrayModel(PostgreSQLModel):
datetimes = ArrayField(models.DateTimeField())
dates = ArrayField(models.DateField())
times = ArrayField(models.TimeField())
class NestedIntegerArrayModel(PostgreSQLModel):
field = ArrayField(ArrayField(models.IntegerField()))
class OtherTypesArrayModel(PostgreSQLModel):
ips = ArrayField(models.GenericIPAddressField(), default=list)
uuids = ArrayField(models.UUIDField(), default=list)
decimals = ArrayField(models.DecimalField(max_digits=5, decimal_places=2), default=list)
tags = ArrayField(TagField(), blank=True, null=True)
json = ArrayField(models.JSONField(default=dict), default=list)
int_ranges = ArrayField(IntegerRangeField(), blank=True, null=True)
bigint_ranges = ArrayField(BigIntegerRangeField(), blank=True, null=True)
class HStoreModel(PostgreSQLModel):
field = HStoreField(blank=True, null=True)
array_field = ArrayField(HStoreField(), null=True)
class ArrayEnumModel(PostgreSQLModel):
array_of_enums = ArrayField(EnumField(max_length=20))
class CharFieldModel(models.Model):
field = models.CharField(max_length=64)
class TextFieldModel(models.Model):
field = models.TextField()
class SmallAutoFieldModel(models.Model):
id = models.SmallAutoField(primary_key=True)
class BigAutoFieldModel(models.Model):
id = models.BigAutoField(primary_key=True)
# Scene/Character/Line models are used to test full text search. They're
# populated with content from Monty Python and the Holy Grail.
class Scene(models.Model):
scene = models.CharField(max_length=255)
setting = models.CharField(max_length=255)
class Character(models.Model):
name = models.CharField(max_length=255)
class CITestModel(PostgreSQLModel):
name = CICharField(primary_key=True, max_length=255)
email = CIEmailField()
description = CITextField()
array_field = ArrayField(CITextField(), null=True)
class Line(PostgreSQLModel):
scene = models.ForeignKey('Scene', models.CASCADE)
character = models.ForeignKey('Character', models.CASCADE)
dialogue = models.TextField(blank=True, null=True)
dialogue_search_vector = SearchVectorField(blank=True, null=True)
dialogue_config = models.CharField(max_length=100, blank=True, null=True)
class LineSavedSearch(PostgreSQLModel):
line = models.ForeignKey('Line', models.CASCADE)
query = models.CharField(max_length=100)
class RangesModel(PostgreSQLModel):
ints = IntegerRangeField(blank=True, null=True)
bigints = BigIntegerRangeField(blank=True, null=True)
decimals = DecimalRangeField(blank=True, null=True)
timestamps = DateTimeRangeField(blank=True, null=True)
timestamps_inner = DateTimeRangeField(blank=True, null=True)
dates = DateRangeField(blank=True, null=True)
dates_inner = DateRangeField(blank=True, null=True)
class RangeLookupsModel(PostgreSQLModel):
parent = models.ForeignKey(RangesModel, models.SET_NULL, blank=True, null=True)
integer = models.IntegerField(blank=True, null=True)
big_integer = models.BigIntegerField(blank=True, null=True)
float = models.FloatField(blank=True, null=True)
timestamp = models.DateTimeField(blank=True, null=True)
date = models.DateField(blank=True, null=True)
small_integer = models.SmallIntegerField(blank=True, null=True)
decimal_field = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)
class ArrayFieldSubclass(ArrayField):
def __init__(self, *args, **kwargs):
super().__init__(models.IntegerField())
class AggregateTestModel(PostgreSQLModel):
"""
To test postgres-specific general aggregation functions
"""
char_field = models.CharField(max_length=30, blank=True)
integer_field = models.IntegerField(null=True)
boolean_field = models.BooleanField(null=True)
json_field = models.JSONField(null=True)
class StatTestModel(PostgreSQLModel):
"""
To test postgres-specific aggregation functions for statistics
"""
int1 = models.IntegerField()
int2 = models.IntegerField()
related_field = models.ForeignKey(AggregateTestModel, models.SET_NULL, null=True)
class NowTestModel(models.Model):
when = models.DateTimeField(null=True, default=None)
class UUIDTestModel(models.Model):
uuid = models.UUIDField(default=None, null=True)
class Room(models.Model):
number = models.IntegerField(unique=True)
class HotelReservation(PostgreSQLModel):
room = models.ForeignKey('Room', on_delete=models.CASCADE)
datespan = DateRangeField()
start = models.DateTimeField()
end = models.DateTimeField()
cancelled = models.BooleanField(default=False)
requirements = models.JSONField(blank=True, null=True)
|
c4f6d8660cb1a06fab57d879bacddba6ed01bc3a6f2a1611af90ca9bc337e0af | # Unit tests for cache framework
# Uses whatever cache backend is set in the test settings file.
import copy
import io
import os
import pickle
import re
import shutil
import sys
import tempfile
import threading
import time
import unittest
import warnings
from pathlib import Path
from unittest import mock, skipIf
from django.conf import settings
from django.core import management, signals
from django.core.cache import (
DEFAULT_CACHE_ALIAS, CacheHandler, CacheKeyWarning, InvalidCacheKey, cache,
caches,
)
from django.core.cache.backends.base import InvalidCacheBackendError
from django.core.cache.backends.redis import RedisCacheClient
from django.core.cache.utils import make_template_fragment_key
from django.db import close_old_connections, connection, connections
from django.db.backends.utils import CursorWrapper
from django.http import (
HttpRequest, HttpResponse, HttpResponseNotModified, StreamingHttpResponse,
)
from django.middleware.cache import (
CacheMiddleware, FetchFromCacheMiddleware, UpdateCacheMiddleware,
)
from django.middleware.csrf import CsrfViewMiddleware
from django.template import engines
from django.template.context_processors import csrf
from django.template.response import TemplateResponse
from django.test import (
RequestFactory, SimpleTestCase, TestCase, TransactionTestCase,
ignore_warnings, override_settings,
)
from django.test.signals import setting_changed
from django.test.utils import CaptureQueriesContext
from django.utils import timezone, translation
from django.utils.cache import (
get_cache_key, learn_cache_key, patch_cache_control, patch_vary_headers,
)
from django.utils.deprecation import RemovedInDjango41Warning
from django.views.decorators.cache import cache_control, cache_page
from .models import Poll, expensive_calculation
# functions/classes for complex data type tests
def f():
return 42
class C:
def m(n):
return 24
class Unpicklable:
def __getstate__(self):
raise pickle.PickleError()
def empty_response(request):
return HttpResponse()
KEY_ERRORS_WITH_MEMCACHED_MSG = (
'Cache key contains characters that will cause errors if used with '
'memcached: %r'
)
@override_settings(CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
}
})
class DummyCacheTests(SimpleTestCase):
# The Dummy cache backend doesn't really behave like a test backend,
# so it has its own test case.
def test_simple(self):
"Dummy cache backend ignores cache set calls"
cache.set("key", "value")
self.assertIsNone(cache.get("key"))
def test_add(self):
"Add doesn't do anything in dummy cache backend"
self.assertIs(cache.add("addkey1", "value"), True)
self.assertIs(cache.add("addkey1", "newvalue"), True)
self.assertIsNone(cache.get("addkey1"))
def test_non_existent(self):
"Nonexistent keys aren't found in the dummy cache backend"
self.assertIsNone(cache.get("does_not_exist"))
self.assertEqual(cache.get("does_not_exist", "bang!"), "bang!")
def test_get_many(self):
"get_many returns nothing for the dummy cache backend"
cache.set_many({'a': 'a', 'b': 'b', 'c': 'c', 'd': 'd'})
self.assertEqual(cache.get_many(['a', 'c', 'd']), {})
self.assertEqual(cache.get_many(['a', 'b', 'e']), {})
def test_get_many_invalid_key(self):
msg = KEY_ERRORS_WITH_MEMCACHED_MSG % ':1:key with spaces'
with self.assertWarnsMessage(CacheKeyWarning, msg):
cache.get_many(['key with spaces'])
def test_delete(self):
"Cache deletion is transparently ignored on the dummy cache backend"
cache.set_many({'key1': 'spam', 'key2': 'eggs'})
self.assertIsNone(cache.get("key1"))
self.assertIs(cache.delete("key1"), False)
self.assertIsNone(cache.get("key1"))
self.assertIsNone(cache.get("key2"))
def test_has_key(self):
"The has_key method doesn't ever return True for the dummy cache backend"
cache.set("hello1", "goodbye1")
self.assertIs(cache.has_key("hello1"), False)
self.assertIs(cache.has_key("goodbye1"), False)
def test_in(self):
"The in operator doesn't ever return True for the dummy cache backend"
cache.set("hello2", "goodbye2")
self.assertNotIn("hello2", cache)
self.assertNotIn("goodbye2", cache)
def test_incr(self):
"Dummy cache values can't be incremented"
cache.set('answer', 42)
with self.assertRaises(ValueError):
cache.incr('answer')
with self.assertRaises(ValueError):
cache.incr('does_not_exist')
with self.assertRaises(ValueError):
cache.incr('does_not_exist', -1)
def test_decr(self):
"Dummy cache values can't be decremented"
cache.set('answer', 42)
with self.assertRaises(ValueError):
cache.decr('answer')
with self.assertRaises(ValueError):
cache.decr('does_not_exist')
with self.assertRaises(ValueError):
cache.decr('does_not_exist', -1)
def test_touch(self):
"""Dummy cache can't do touch()."""
self.assertIs(cache.touch('whatever'), False)
def test_data_types(self):
"All data types are ignored equally by the dummy cache"
stuff = {
'string': 'this is a string',
'int': 42,
'list': [1, 2, 3, 4],
'tuple': (1, 2, 3, 4),
'dict': {'A': 1, 'B': 2},
'function': f,
'class': C,
}
cache.set("stuff", stuff)
self.assertIsNone(cache.get("stuff"))
def test_expiration(self):
"Expiration has no effect on the dummy cache"
cache.set('expire1', 'very quickly', 1)
cache.set('expire2', 'very quickly', 1)
cache.set('expire3', 'very quickly', 1)
time.sleep(2)
self.assertIsNone(cache.get("expire1"))
self.assertIs(cache.add("expire2", "newvalue"), True)
self.assertIsNone(cache.get("expire2"))
self.assertIs(cache.has_key("expire3"), False)
def test_unicode(self):
"Unicode values are ignored by the dummy cache"
stuff = {
'ascii': 'ascii_value',
'unicode_ascii': 'Iñtërnâtiônàlizætiøn1',
'Iñtërnâtiônàlizætiøn': 'Iñtërnâtiônàlizætiøn2',
'ascii2': {'x': 1}
}
for (key, value) in stuff.items():
with self.subTest(key=key):
cache.set(key, value)
self.assertIsNone(cache.get(key))
def test_set_many(self):
"set_many does nothing for the dummy cache backend"
self.assertEqual(cache.set_many({'a': 1, 'b': 2}), [])
self.assertEqual(cache.set_many({'a': 1, 'b': 2}, timeout=2, version='1'), [])
def test_set_many_invalid_key(self):
msg = KEY_ERRORS_WITH_MEMCACHED_MSG % ':1:key with spaces'
with self.assertWarnsMessage(CacheKeyWarning, msg):
cache.set_many({'key with spaces': 'foo'})
def test_delete_many(self):
"delete_many does nothing for the dummy cache backend"
cache.delete_many(['a', 'b'])
def test_delete_many_invalid_key(self):
msg = KEY_ERRORS_WITH_MEMCACHED_MSG % ':1:key with spaces'
with self.assertWarnsMessage(CacheKeyWarning, msg):
cache.delete_many(['key with spaces'])
def test_clear(self):
"clear does nothing for the dummy cache backend"
cache.clear()
def test_incr_version(self):
"Dummy cache versions can't be incremented"
cache.set('answer', 42)
with self.assertRaises(ValueError):
cache.incr_version('answer')
with self.assertRaises(ValueError):
cache.incr_version('does_not_exist')
def test_decr_version(self):
"Dummy cache versions can't be decremented"
cache.set('answer', 42)
with self.assertRaises(ValueError):
cache.decr_version('answer')
with self.assertRaises(ValueError):
cache.decr_version('does_not_exist')
def test_get_or_set(self):
self.assertEqual(cache.get_or_set('mykey', 'default'), 'default')
self.assertIsNone(cache.get_or_set('mykey', None))
def test_get_or_set_callable(self):
def my_callable():
return 'default'
self.assertEqual(cache.get_or_set('mykey', my_callable), 'default')
self.assertEqual(cache.get_or_set('mykey', my_callable()), 'default')
def custom_key_func(key, key_prefix, version):
"A customized cache key function"
return 'CUSTOM-' + '-'.join([key_prefix, str(version), key])
_caches_setting_base = {
'default': {},
'prefix': {'KEY_PREFIX': 'cacheprefix{}'.format(os.getpid())},
'v2': {'VERSION': 2},
'custom_key': {'KEY_FUNCTION': custom_key_func},
'custom_key2': {'KEY_FUNCTION': 'cache.tests.custom_key_func'},
'cull': {'OPTIONS': {'MAX_ENTRIES': 30}},
'zero_cull': {'OPTIONS': {'CULL_FREQUENCY': 0, 'MAX_ENTRIES': 30}},
}
def caches_setting_for_tests(base=None, exclude=None, **params):
# `base` is used to pull in the memcached config from the original settings,
# `exclude` is a set of cache names denoting which `_caches_setting_base` keys
# should be omitted.
# `params` are test specific overrides and `_caches_settings_base` is the
# base config for the tests.
# This results in the following search order:
# params -> _caches_setting_base -> base
base = base or {}
exclude = exclude or set()
setting = {k: base.copy() for k in _caches_setting_base if k not in exclude}
for key, cache_params in setting.items():
cache_params.update(_caches_setting_base[key])
cache_params.update(params)
return setting
class BaseCacheTests:
# A common set of tests to apply to all cache backends
factory = RequestFactory()
# RemovedInDjango41Warning: python-memcached doesn't support .get() with
# default.
supports_get_with_default = True
# Some clients raise custom exceptions when .incr() or .decr() are called
# with a non-integer value.
incr_decr_type_error = TypeError
def tearDown(self):
cache.clear()
def test_simple(self):
# Simple cache set/get works
cache.set("key", "value")
self.assertEqual(cache.get("key"), "value")
def test_default_used_when_none_is_set(self):
"""If None is cached, get() returns it instead of the default."""
cache.set('key_default_none', None)
self.assertIsNone(cache.get('key_default_none', default='default'))
def test_add(self):
# A key can be added to a cache
self.assertIs(cache.add("addkey1", "value"), True)
self.assertIs(cache.add("addkey1", "newvalue"), False)
self.assertEqual(cache.get("addkey1"), "value")
def test_prefix(self):
# Test for same cache key conflicts between shared backend
cache.set('somekey', 'value')
# should not be set in the prefixed cache
self.assertIs(caches['prefix'].has_key('somekey'), False)
caches['prefix'].set('somekey', 'value2')
self.assertEqual(cache.get('somekey'), 'value')
self.assertEqual(caches['prefix'].get('somekey'), 'value2')
def test_non_existent(self):
"""Nonexistent cache keys return as None/default."""
self.assertIsNone(cache.get("does_not_exist"))
self.assertEqual(cache.get("does_not_exist", "bang!"), "bang!")
def test_get_many(self):
# Multiple cache keys can be returned using get_many
cache.set_many({'a': 'a', 'b': 'b', 'c': 'c', 'd': 'd'})
self.assertEqual(cache.get_many(['a', 'c', 'd']), {'a': 'a', 'c': 'c', 'd': 'd'})
self.assertEqual(cache.get_many(['a', 'b', 'e']), {'a': 'a', 'b': 'b'})
self.assertEqual(cache.get_many(iter(['a', 'b', 'e'])), {'a': 'a', 'b': 'b'})
cache.set_many({'x': None, 'y': 1})
self.assertEqual(cache.get_many(['x', 'y']), {'x': None, 'y': 1})
def test_delete(self):
# Cache keys can be deleted
cache.set_many({'key1': 'spam', 'key2': 'eggs'})
self.assertEqual(cache.get("key1"), "spam")
self.assertIs(cache.delete("key1"), True)
self.assertIsNone(cache.get("key1"))
self.assertEqual(cache.get("key2"), "eggs")
def test_delete_nonexistent(self):
self.assertIs(cache.delete('nonexistent_key'), False)
def test_has_key(self):
# The cache can be inspected for cache keys
cache.set("hello1", "goodbye1")
self.assertIs(cache.has_key("hello1"), True)
self.assertIs(cache.has_key("goodbye1"), False)
cache.set("no_expiry", "here", None)
self.assertIs(cache.has_key("no_expiry"), True)
cache.set('null', None)
self.assertIs(
cache.has_key('null'),
True if self.supports_get_with_default else False,
)
def test_in(self):
# The in operator can be used to inspect cache contents
cache.set("hello2", "goodbye2")
self.assertIn("hello2", cache)
self.assertNotIn("goodbye2", cache)
cache.set('null', None)
if self.supports_get_with_default:
self.assertIn('null', cache)
else:
self.assertNotIn('null', cache)
def test_incr(self):
# Cache values can be incremented
cache.set('answer', 41)
self.assertEqual(cache.incr('answer'), 42)
self.assertEqual(cache.get('answer'), 42)
self.assertEqual(cache.incr('answer', 10), 52)
self.assertEqual(cache.get('answer'), 52)
self.assertEqual(cache.incr('answer', -10), 42)
with self.assertRaises(ValueError):
cache.incr('does_not_exist')
with self.assertRaises(ValueError):
cache.incr('does_not_exist', -1)
cache.set('null', None)
with self.assertRaises(self.incr_decr_type_error):
cache.incr('null')
def test_decr(self):
# Cache values can be decremented
cache.set('answer', 43)
self.assertEqual(cache.decr('answer'), 42)
self.assertEqual(cache.get('answer'), 42)
self.assertEqual(cache.decr('answer', 10), 32)
self.assertEqual(cache.get('answer'), 32)
self.assertEqual(cache.decr('answer', -10), 42)
with self.assertRaises(ValueError):
cache.decr('does_not_exist')
with self.assertRaises(ValueError):
cache.incr('does_not_exist', -1)
cache.set('null', None)
with self.assertRaises(self.incr_decr_type_error):
cache.decr('null')
def test_close(self):
self.assertTrue(hasattr(cache, 'close'))
cache.close()
def test_data_types(self):
# Many different data types can be cached
stuff = {
'string': 'this is a string',
'int': 42,
'list': [1, 2, 3, 4],
'tuple': (1, 2, 3, 4),
'dict': {'A': 1, 'B': 2},
'function': f,
'class': C,
}
cache.set("stuff", stuff)
self.assertEqual(cache.get("stuff"), stuff)
def test_cache_read_for_model_instance(self):
# Don't want fields with callable as default to be called on cache read
expensive_calculation.num_runs = 0
Poll.objects.all().delete()
my_poll = Poll.objects.create(question="Well?")
self.assertEqual(Poll.objects.count(), 1)
pub_date = my_poll.pub_date
cache.set('question', my_poll)
cached_poll = cache.get('question')
self.assertEqual(cached_poll.pub_date, pub_date)
# We only want the default expensive calculation run once
self.assertEqual(expensive_calculation.num_runs, 1)
def test_cache_write_for_model_instance_with_deferred(self):
# Don't want fields with callable as default to be called on cache write
expensive_calculation.num_runs = 0
Poll.objects.all().delete()
Poll.objects.create(question="What?")
self.assertEqual(expensive_calculation.num_runs, 1)
defer_qs = Poll.objects.all().defer('question')
self.assertEqual(defer_qs.count(), 1)
self.assertEqual(expensive_calculation.num_runs, 1)
cache.set('deferred_queryset', defer_qs)
# cache set should not re-evaluate default functions
self.assertEqual(expensive_calculation.num_runs, 1)
def test_cache_read_for_model_instance_with_deferred(self):
# Don't want fields with callable as default to be called on cache read
expensive_calculation.num_runs = 0
Poll.objects.all().delete()
Poll.objects.create(question="What?")
self.assertEqual(expensive_calculation.num_runs, 1)
defer_qs = Poll.objects.all().defer('question')
self.assertEqual(defer_qs.count(), 1)
cache.set('deferred_queryset', defer_qs)
self.assertEqual(expensive_calculation.num_runs, 1)
runs_before_cache_read = expensive_calculation.num_runs
cache.get('deferred_queryset')
# We only want the default expensive calculation run on creation and set
self.assertEqual(expensive_calculation.num_runs, runs_before_cache_read)
def test_expiration(self):
# Cache values can be set to expire
cache.set('expire1', 'very quickly', 1)
cache.set('expire2', 'very quickly', 1)
cache.set('expire3', 'very quickly', 1)
time.sleep(2)
self.assertIsNone(cache.get("expire1"))
self.assertIs(cache.add("expire2", "newvalue"), True)
self.assertEqual(cache.get("expire2"), "newvalue")
self.assertIs(cache.has_key("expire3"), False)
def test_touch(self):
# cache.touch() updates the timeout.
cache.set('expire1', 'very quickly', timeout=1)
self.assertIs(cache.touch('expire1', timeout=4), True)
time.sleep(2)
self.assertIs(cache.has_key('expire1'), True)
time.sleep(3)
self.assertIs(cache.has_key('expire1'), False)
# cache.touch() works without the timeout argument.
cache.set('expire1', 'very quickly', timeout=1)
self.assertIs(cache.touch('expire1'), True)
time.sleep(2)
self.assertIs(cache.has_key('expire1'), True)
self.assertIs(cache.touch('nonexistent'), False)
def test_unicode(self):
# Unicode values can be cached
stuff = {
'ascii': 'ascii_value',
'unicode_ascii': 'Iñtërnâtiônàlizætiøn1',
'Iñtërnâtiônàlizætiøn': 'Iñtërnâtiônàlizætiøn2',
'ascii2': {'x': 1}
}
# Test `set`
for (key, value) in stuff.items():
with self.subTest(key=key):
cache.set(key, value)
self.assertEqual(cache.get(key), value)
# Test `add`
for (key, value) in stuff.items():
with self.subTest(key=key):
self.assertIs(cache.delete(key), True)
self.assertIs(cache.add(key, value), True)
self.assertEqual(cache.get(key), value)
# Test `set_many`
for (key, value) in stuff.items():
self.assertIs(cache.delete(key), True)
cache.set_many(stuff)
for (key, value) in stuff.items():
with self.subTest(key=key):
self.assertEqual(cache.get(key), value)
def test_binary_string(self):
# Binary strings should be cacheable
from zlib import compress, decompress
value = 'value_to_be_compressed'
compressed_value = compress(value.encode())
# Test set
cache.set('binary1', compressed_value)
compressed_result = cache.get('binary1')
self.assertEqual(compressed_value, compressed_result)
self.assertEqual(value, decompress(compressed_result).decode())
# Test add
self.assertIs(cache.add('binary1-add', compressed_value), True)
compressed_result = cache.get('binary1-add')
self.assertEqual(compressed_value, compressed_result)
self.assertEqual(value, decompress(compressed_result).decode())
# Test set_many
cache.set_many({'binary1-set_many': compressed_value})
compressed_result = cache.get('binary1-set_many')
self.assertEqual(compressed_value, compressed_result)
self.assertEqual(value, decompress(compressed_result).decode())
def test_set_many(self):
# Multiple keys can be set using set_many
cache.set_many({"key1": "spam", "key2": "eggs"})
self.assertEqual(cache.get("key1"), "spam")
self.assertEqual(cache.get("key2"), "eggs")
def test_set_many_returns_empty_list_on_success(self):
"""set_many() returns an empty list when all keys are inserted."""
failing_keys = cache.set_many({'key1': 'spam', 'key2': 'eggs'})
self.assertEqual(failing_keys, [])
def test_set_many_expiration(self):
# set_many takes a second ``timeout`` parameter
cache.set_many({"key1": "spam", "key2": "eggs"}, 1)
time.sleep(2)
self.assertIsNone(cache.get("key1"))
self.assertIsNone(cache.get("key2"))
def test_delete_many(self):
# Multiple keys can be deleted using delete_many
cache.set_many({'key1': 'spam', 'key2': 'eggs', 'key3': 'ham'})
cache.delete_many(["key1", "key2"])
self.assertIsNone(cache.get("key1"))
self.assertIsNone(cache.get("key2"))
self.assertEqual(cache.get("key3"), "ham")
def test_clear(self):
# The cache can be emptied using clear
cache.set_many({'key1': 'spam', 'key2': 'eggs'})
cache.clear()
self.assertIsNone(cache.get("key1"))
self.assertIsNone(cache.get("key2"))
def test_long_timeout(self):
"""
Follow memcached's convention where a timeout greater than 30 days is
treated as an absolute expiration timestamp instead of a relative
offset (#12399).
"""
cache.set('key1', 'eggs', 60 * 60 * 24 * 30 + 1) # 30 days + 1 second
self.assertEqual(cache.get('key1'), 'eggs')
self.assertIs(cache.add('key2', 'ham', 60 * 60 * 24 * 30 + 1), True)
self.assertEqual(cache.get('key2'), 'ham')
cache.set_many({'key3': 'sausage', 'key4': 'lobster bisque'}, 60 * 60 * 24 * 30 + 1)
self.assertEqual(cache.get('key3'), 'sausage')
self.assertEqual(cache.get('key4'), 'lobster bisque')
def test_forever_timeout(self):
"""
Passing in None into timeout results in a value that is cached forever
"""
cache.set('key1', 'eggs', None)
self.assertEqual(cache.get('key1'), 'eggs')
self.assertIs(cache.add('key2', 'ham', None), True)
self.assertEqual(cache.get('key2'), 'ham')
self.assertIs(cache.add('key1', 'new eggs', None), False)
self.assertEqual(cache.get('key1'), 'eggs')
cache.set_many({'key3': 'sausage', 'key4': 'lobster bisque'}, None)
self.assertEqual(cache.get('key3'), 'sausage')
self.assertEqual(cache.get('key4'), 'lobster bisque')
cache.set('key5', 'belgian fries', timeout=1)
self.assertIs(cache.touch('key5', timeout=None), True)
time.sleep(2)
self.assertEqual(cache.get('key5'), 'belgian fries')
def test_zero_timeout(self):
"""
Passing in zero into timeout results in a value that is not cached
"""
cache.set('key1', 'eggs', 0)
self.assertIsNone(cache.get('key1'))
self.assertIs(cache.add('key2', 'ham', 0), True)
self.assertIsNone(cache.get('key2'))
cache.set_many({'key3': 'sausage', 'key4': 'lobster bisque'}, 0)
self.assertIsNone(cache.get('key3'))
self.assertIsNone(cache.get('key4'))
cache.set('key5', 'belgian fries', timeout=5)
self.assertIs(cache.touch('key5', timeout=0), True)
self.assertIsNone(cache.get('key5'))
def test_float_timeout(self):
# Make sure a timeout given as a float doesn't crash anything.
cache.set("key1", "spam", 100.2)
self.assertEqual(cache.get("key1"), "spam")
def _perform_cull_test(self, cull_cache_name, initial_count, final_count):
try:
cull_cache = caches[cull_cache_name]
except InvalidCacheBackendError:
self.skipTest("Culling isn't implemented.")
# Create initial cache key entries. This will overflow the cache,
# causing a cull.
for i in range(1, initial_count):
cull_cache.set('cull%d' % i, 'value', 1000)
count = 0
# Count how many keys are left in the cache.
for i in range(1, initial_count):
if cull_cache.has_key('cull%d' % i):
count += 1
self.assertEqual(count, final_count)
def test_cull(self):
self._perform_cull_test('cull', 50, 29)
def test_zero_cull(self):
self._perform_cull_test('zero_cull', 50, 19)
def test_cull_delete_when_store_empty(self):
try:
cull_cache = caches['cull']
except InvalidCacheBackendError:
self.skipTest("Culling isn't implemented.")
old_max_entries = cull_cache._max_entries
# Force _cull to delete on first cached record.
cull_cache._max_entries = -1
try:
cull_cache.set('force_cull_delete', 'value', 1000)
self.assertIs(cull_cache.has_key('force_cull_delete'), True)
finally:
cull_cache._max_entries = old_max_entries
def _perform_invalid_key_test(self, key, expected_warning, key_func=None):
"""
All the builtin backends should warn (except memcached that should
error) on keys that would be refused by memcached. This encourages
portable caching code without making it too difficult to use production
backends with more liberal key rules. Refs #6447.
"""
# mimic custom ``make_key`` method being defined since the default will
# never show the below warnings
def func(key, *args):
return key
old_func = cache.key_func
cache.key_func = key_func or func
tests = [
('add', [key, 1]),
('get', [key]),
('set', [key, 1]),
('incr', [key]),
('decr', [key]),
('touch', [key]),
('delete', [key]),
('get_many', [[key, 'b']]),
('set_many', [{key: 1, 'b': 2}]),
('delete_many', [[key, 'b']]),
]
try:
for operation, args in tests:
with self.subTest(operation=operation):
with self.assertWarns(CacheKeyWarning) as cm:
getattr(cache, operation)(*args)
self.assertEqual(str(cm.warning), expected_warning)
finally:
cache.key_func = old_func
def test_invalid_key_characters(self):
# memcached doesn't allow whitespace or control characters in keys.
key = 'key with spaces and 清'
self._perform_invalid_key_test(key, KEY_ERRORS_WITH_MEMCACHED_MSG % key)
def test_invalid_key_length(self):
# memcached limits key length to 250.
key = ('a' * 250) + '清'
expected_warning = (
'Cache key will cause errors if used with memcached: '
'%r (longer than %s)' % (key, 250)
)
self._perform_invalid_key_test(key, expected_warning)
def test_invalid_with_version_key_length(self):
# Custom make_key() that adds a version to the key and exceeds the
# limit.
def key_func(key, *args):
return key + ':1'
key = 'a' * 249
expected_warning = (
'Cache key will cause errors if used with memcached: '
'%r (longer than %s)' % (key_func(key), 250)
)
self._perform_invalid_key_test(key, expected_warning, key_func=key_func)
def test_cache_versioning_get_set(self):
# set, using default version = 1
cache.set('answer1', 42)
self.assertEqual(cache.get('answer1'), 42)
self.assertEqual(cache.get('answer1', version=1), 42)
self.assertIsNone(cache.get('answer1', version=2))
self.assertIsNone(caches['v2'].get('answer1'))
self.assertEqual(caches['v2'].get('answer1', version=1), 42)
self.assertIsNone(caches['v2'].get('answer1', version=2))
# set, default version = 1, but manually override version = 2
cache.set('answer2', 42, version=2)
self.assertIsNone(cache.get('answer2'))
self.assertIsNone(cache.get('answer2', version=1))
self.assertEqual(cache.get('answer2', version=2), 42)
self.assertEqual(caches['v2'].get('answer2'), 42)
self.assertIsNone(caches['v2'].get('answer2', version=1))
self.assertEqual(caches['v2'].get('answer2', version=2), 42)
# v2 set, using default version = 2
caches['v2'].set('answer3', 42)
self.assertIsNone(cache.get('answer3'))
self.assertIsNone(cache.get('answer3', version=1))
self.assertEqual(cache.get('answer3', version=2), 42)
self.assertEqual(caches['v2'].get('answer3'), 42)
self.assertIsNone(caches['v2'].get('answer3', version=1))
self.assertEqual(caches['v2'].get('answer3', version=2), 42)
# v2 set, default version = 2, but manually override version = 1
caches['v2'].set('answer4', 42, version=1)
self.assertEqual(cache.get('answer4'), 42)
self.assertEqual(cache.get('answer4', version=1), 42)
self.assertIsNone(cache.get('answer4', version=2))
self.assertIsNone(caches['v2'].get('answer4'))
self.assertEqual(caches['v2'].get('answer4', version=1), 42)
self.assertIsNone(caches['v2'].get('answer4', version=2))
def test_cache_versioning_add(self):
# add, default version = 1, but manually override version = 2
self.assertIs(cache.add('answer1', 42, version=2), True)
self.assertIsNone(cache.get('answer1', version=1))
self.assertEqual(cache.get('answer1', version=2), 42)
self.assertIs(cache.add('answer1', 37, version=2), False)
self.assertIsNone(cache.get('answer1', version=1))
self.assertEqual(cache.get('answer1', version=2), 42)
self.assertIs(cache.add('answer1', 37, version=1), True)
self.assertEqual(cache.get('answer1', version=1), 37)
self.assertEqual(cache.get('answer1', version=2), 42)
# v2 add, using default version = 2
self.assertIs(caches['v2'].add('answer2', 42), True)
self.assertIsNone(cache.get('answer2', version=1))
self.assertEqual(cache.get('answer2', version=2), 42)
self.assertIs(caches['v2'].add('answer2', 37), False)
self.assertIsNone(cache.get('answer2', version=1))
self.assertEqual(cache.get('answer2', version=2), 42)
self.assertIs(caches['v2'].add('answer2', 37, version=1), True)
self.assertEqual(cache.get('answer2', version=1), 37)
self.assertEqual(cache.get('answer2', version=2), 42)
# v2 add, default version = 2, but manually override version = 1
self.assertIs(caches['v2'].add('answer3', 42, version=1), True)
self.assertEqual(cache.get('answer3', version=1), 42)
self.assertIsNone(cache.get('answer3', version=2))
self.assertIs(caches['v2'].add('answer3', 37, version=1), False)
self.assertEqual(cache.get('answer3', version=1), 42)
self.assertIsNone(cache.get('answer3', version=2))
self.assertIs(caches['v2'].add('answer3', 37), True)
self.assertEqual(cache.get('answer3', version=1), 42)
self.assertEqual(cache.get('answer3', version=2), 37)
def test_cache_versioning_has_key(self):
cache.set('answer1', 42)
# has_key
self.assertIs(cache.has_key('answer1'), True)
self.assertIs(cache.has_key('answer1', version=1), True)
self.assertIs(cache.has_key('answer1', version=2), False)
self.assertIs(caches['v2'].has_key('answer1'), False)
self.assertIs(caches['v2'].has_key('answer1', version=1), True)
self.assertIs(caches['v2'].has_key('answer1', version=2), False)
def test_cache_versioning_delete(self):
cache.set('answer1', 37, version=1)
cache.set('answer1', 42, version=2)
self.assertIs(cache.delete('answer1'), True)
self.assertIsNone(cache.get('answer1', version=1))
self.assertEqual(cache.get('answer1', version=2), 42)
cache.set('answer2', 37, version=1)
cache.set('answer2', 42, version=2)
self.assertIs(cache.delete('answer2', version=2), True)
self.assertEqual(cache.get('answer2', version=1), 37)
self.assertIsNone(cache.get('answer2', version=2))
cache.set('answer3', 37, version=1)
cache.set('answer3', 42, version=2)
self.assertIs(caches['v2'].delete('answer3'), True)
self.assertEqual(cache.get('answer3', version=1), 37)
self.assertIsNone(cache.get('answer3', version=2))
cache.set('answer4', 37, version=1)
cache.set('answer4', 42, version=2)
self.assertIs(caches['v2'].delete('answer4', version=1), True)
self.assertIsNone(cache.get('answer4', version=1))
self.assertEqual(cache.get('answer4', version=2), 42)
def test_cache_versioning_incr_decr(self):
cache.set('answer1', 37, version=1)
cache.set('answer1', 42, version=2)
self.assertEqual(cache.incr('answer1'), 38)
self.assertEqual(cache.get('answer1', version=1), 38)
self.assertEqual(cache.get('answer1', version=2), 42)
self.assertEqual(cache.decr('answer1'), 37)
self.assertEqual(cache.get('answer1', version=1), 37)
self.assertEqual(cache.get('answer1', version=2), 42)
cache.set('answer2', 37, version=1)
cache.set('answer2', 42, version=2)
self.assertEqual(cache.incr('answer2', version=2), 43)
self.assertEqual(cache.get('answer2', version=1), 37)
self.assertEqual(cache.get('answer2', version=2), 43)
self.assertEqual(cache.decr('answer2', version=2), 42)
self.assertEqual(cache.get('answer2', version=1), 37)
self.assertEqual(cache.get('answer2', version=2), 42)
cache.set('answer3', 37, version=1)
cache.set('answer3', 42, version=2)
self.assertEqual(caches['v2'].incr('answer3'), 43)
self.assertEqual(cache.get('answer3', version=1), 37)
self.assertEqual(cache.get('answer3', version=2), 43)
self.assertEqual(caches['v2'].decr('answer3'), 42)
self.assertEqual(cache.get('answer3', version=1), 37)
self.assertEqual(cache.get('answer3', version=2), 42)
cache.set('answer4', 37, version=1)
cache.set('answer4', 42, version=2)
self.assertEqual(caches['v2'].incr('answer4', version=1), 38)
self.assertEqual(cache.get('answer4', version=1), 38)
self.assertEqual(cache.get('answer4', version=2), 42)
self.assertEqual(caches['v2'].decr('answer4', version=1), 37)
self.assertEqual(cache.get('answer4', version=1), 37)
self.assertEqual(cache.get('answer4', version=2), 42)
def test_cache_versioning_get_set_many(self):
# set, using default version = 1
cache.set_many({'ford1': 37, 'arthur1': 42})
self.assertEqual(cache.get_many(['ford1', 'arthur1']), {'ford1': 37, 'arthur1': 42})
self.assertEqual(cache.get_many(['ford1', 'arthur1'], version=1), {'ford1': 37, 'arthur1': 42})
self.assertEqual(cache.get_many(['ford1', 'arthur1'], version=2), {})
self.assertEqual(caches['v2'].get_many(['ford1', 'arthur1']), {})
self.assertEqual(caches['v2'].get_many(['ford1', 'arthur1'], version=1), {'ford1': 37, 'arthur1': 42})
self.assertEqual(caches['v2'].get_many(['ford1', 'arthur1'], version=2), {})
# set, default version = 1, but manually override version = 2
cache.set_many({'ford2': 37, 'arthur2': 42}, version=2)
self.assertEqual(cache.get_many(['ford2', 'arthur2']), {})
self.assertEqual(cache.get_many(['ford2', 'arthur2'], version=1), {})
self.assertEqual(cache.get_many(['ford2', 'arthur2'], version=2), {'ford2': 37, 'arthur2': 42})
self.assertEqual(caches['v2'].get_many(['ford2', 'arthur2']), {'ford2': 37, 'arthur2': 42})
self.assertEqual(caches['v2'].get_many(['ford2', 'arthur2'], version=1), {})
self.assertEqual(caches['v2'].get_many(['ford2', 'arthur2'], version=2), {'ford2': 37, 'arthur2': 42})
# v2 set, using default version = 2
caches['v2'].set_many({'ford3': 37, 'arthur3': 42})
self.assertEqual(cache.get_many(['ford3', 'arthur3']), {})
self.assertEqual(cache.get_many(['ford3', 'arthur3'], version=1), {})
self.assertEqual(cache.get_many(['ford3', 'arthur3'], version=2), {'ford3': 37, 'arthur3': 42})
self.assertEqual(caches['v2'].get_many(['ford3', 'arthur3']), {'ford3': 37, 'arthur3': 42})
self.assertEqual(caches['v2'].get_many(['ford3', 'arthur3'], version=1), {})
self.assertEqual(caches['v2'].get_many(['ford3', 'arthur3'], version=2), {'ford3': 37, 'arthur3': 42})
# v2 set, default version = 2, but manually override version = 1
caches['v2'].set_many({'ford4': 37, 'arthur4': 42}, version=1)
self.assertEqual(cache.get_many(['ford4', 'arthur4']), {'ford4': 37, 'arthur4': 42})
self.assertEqual(cache.get_many(['ford4', 'arthur4'], version=1), {'ford4': 37, 'arthur4': 42})
self.assertEqual(cache.get_many(['ford4', 'arthur4'], version=2), {})
self.assertEqual(caches['v2'].get_many(['ford4', 'arthur4']), {})
self.assertEqual(caches['v2'].get_many(['ford4', 'arthur4'], version=1), {'ford4': 37, 'arthur4': 42})
self.assertEqual(caches['v2'].get_many(['ford4', 'arthur4'], version=2), {})
def test_incr_version(self):
cache.set('answer', 42, version=2)
self.assertIsNone(cache.get('answer'))
self.assertIsNone(cache.get('answer', version=1))
self.assertEqual(cache.get('answer', version=2), 42)
self.assertIsNone(cache.get('answer', version=3))
self.assertEqual(cache.incr_version('answer', version=2), 3)
self.assertIsNone(cache.get('answer'))
self.assertIsNone(cache.get('answer', version=1))
self.assertIsNone(cache.get('answer', version=2))
self.assertEqual(cache.get('answer', version=3), 42)
caches['v2'].set('answer2', 42)
self.assertEqual(caches['v2'].get('answer2'), 42)
self.assertIsNone(caches['v2'].get('answer2', version=1))
self.assertEqual(caches['v2'].get('answer2', version=2), 42)
self.assertIsNone(caches['v2'].get('answer2', version=3))
self.assertEqual(caches['v2'].incr_version('answer2'), 3)
self.assertIsNone(caches['v2'].get('answer2'))
self.assertIsNone(caches['v2'].get('answer2', version=1))
self.assertIsNone(caches['v2'].get('answer2', version=2))
self.assertEqual(caches['v2'].get('answer2', version=3), 42)
with self.assertRaises(ValueError):
cache.incr_version('does_not_exist')
cache.set('null', None)
if self.supports_get_with_default:
self.assertEqual(cache.incr_version('null'), 2)
else:
with self.assertRaises(self.incr_decr_type_error):
cache.incr_version('null')
def test_decr_version(self):
cache.set('answer', 42, version=2)
self.assertIsNone(cache.get('answer'))
self.assertIsNone(cache.get('answer', version=1))
self.assertEqual(cache.get('answer', version=2), 42)
self.assertEqual(cache.decr_version('answer', version=2), 1)
self.assertEqual(cache.get('answer'), 42)
self.assertEqual(cache.get('answer', version=1), 42)
self.assertIsNone(cache.get('answer', version=2))
caches['v2'].set('answer2', 42)
self.assertEqual(caches['v2'].get('answer2'), 42)
self.assertIsNone(caches['v2'].get('answer2', version=1))
self.assertEqual(caches['v2'].get('answer2', version=2), 42)
self.assertEqual(caches['v2'].decr_version('answer2'), 1)
self.assertIsNone(caches['v2'].get('answer2'))
self.assertEqual(caches['v2'].get('answer2', version=1), 42)
self.assertIsNone(caches['v2'].get('answer2', version=2))
with self.assertRaises(ValueError):
cache.decr_version('does_not_exist', version=2)
cache.set('null', None, version=2)
if self.supports_get_with_default:
self.assertEqual(cache.decr_version('null', version=2), 1)
else:
with self.assertRaises(self.incr_decr_type_error):
cache.decr_version('null', version=2)
def test_custom_key_func(self):
# Two caches with different key functions aren't visible to each other
cache.set('answer1', 42)
self.assertEqual(cache.get('answer1'), 42)
self.assertIsNone(caches['custom_key'].get('answer1'))
self.assertIsNone(caches['custom_key2'].get('answer1'))
caches['custom_key'].set('answer2', 42)
self.assertIsNone(cache.get('answer2'))
self.assertEqual(caches['custom_key'].get('answer2'), 42)
self.assertEqual(caches['custom_key2'].get('answer2'), 42)
def test_cache_write_unpicklable_object(self):
fetch_middleware = FetchFromCacheMiddleware(empty_response)
fetch_middleware.cache = cache
request = self.factory.get('/cache/test')
request._cache_update_cache = True
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNone(get_cache_data)
content = 'Testing cookie serialization.'
def get_response(req):
response = HttpResponse(content)
response.set_cookie('foo', 'bar')
return response
update_middleware = UpdateCacheMiddleware(get_response)
update_middleware.cache = cache
response = update_middleware(request)
get_cache_data = fetch_middleware.process_request(request)
self.assertIsNotNone(get_cache_data)
self.assertEqual(get_cache_data.content, content.encode())
self.assertEqual(get_cache_data.cookies, response.cookies)
UpdateCacheMiddleware(lambda req: get_cache_data)(request)
get_cache_data = fetch_middleware.process_request(request)
self.assertIsNotNone(get_cache_data)
self.assertEqual(get_cache_data.content, content.encode())
self.assertEqual(get_cache_data.cookies, response.cookies)
def test_add_fail_on_pickleerror(self):
# Shouldn't fail silently if trying to cache an unpicklable type.
with self.assertRaises(pickle.PickleError):
cache.add('unpicklable', Unpicklable())
def test_set_fail_on_pickleerror(self):
with self.assertRaises(pickle.PickleError):
cache.set('unpicklable', Unpicklable())
def test_get_or_set(self):
self.assertIsNone(cache.get('projector'))
self.assertEqual(cache.get_or_set('projector', 42), 42)
self.assertEqual(cache.get('projector'), 42)
self.assertIsNone(cache.get_or_set('null', None))
if self.supports_get_with_default:
# Previous get_or_set() stores None in the cache.
self.assertIsNone(cache.get('null', 'default'))
else:
self.assertEqual(cache.get('null', 'default'), 'default')
def test_get_or_set_callable(self):
def my_callable():
return 'value'
self.assertEqual(cache.get_or_set('mykey', my_callable), 'value')
self.assertEqual(cache.get_or_set('mykey', my_callable()), 'value')
self.assertIsNone(cache.get_or_set('null', lambda: None))
if self.supports_get_with_default:
# Previous get_or_set() stores None in the cache.
self.assertIsNone(cache.get('null', 'default'))
else:
self.assertEqual(cache.get('null', 'default'), 'default')
def test_get_or_set_version(self):
msg = "get_or_set() missing 1 required positional argument: 'default'"
self.assertEqual(cache.get_or_set('brian', 1979, version=2), 1979)
with self.assertRaisesMessage(TypeError, msg):
cache.get_or_set('brian')
with self.assertRaisesMessage(TypeError, msg):
cache.get_or_set('brian', version=1)
self.assertIsNone(cache.get('brian', version=1))
self.assertEqual(cache.get_or_set('brian', 42, version=1), 42)
self.assertEqual(cache.get_or_set('brian', 1979, version=2), 1979)
self.assertIsNone(cache.get('brian', version=3))
def test_get_or_set_racing(self):
with mock.patch('%s.%s' % (settings.CACHES['default']['BACKEND'], 'add')) as cache_add:
# Simulate cache.add() failing to add a value. In that case, the
# default value should be returned.
cache_add.return_value = False
self.assertEqual(cache.get_or_set('key', 'default'), 'default')
@override_settings(CACHES=caches_setting_for_tests(
BACKEND='django.core.cache.backends.db.DatabaseCache',
# Spaces are used in the table name to ensure quoting/escaping is working
LOCATION='test cache table'
))
class DBCacheTests(BaseCacheTests, TransactionTestCase):
available_apps = ['cache']
def setUp(self):
# The super calls needs to happen first for the settings override.
super().setUp()
self.create_table()
def tearDown(self):
# The super call needs to happen first because it uses the database.
super().tearDown()
self.drop_table()
def create_table(self):
management.call_command('createcachetable', verbosity=0)
def drop_table(self):
with connection.cursor() as cursor:
table_name = connection.ops.quote_name('test cache table')
cursor.execute('DROP TABLE %s' % table_name)
def test_get_many_num_queries(self):
cache.set_many({'a': 1, 'b': 2})
cache.set('expired', 'expired', 0.01)
with self.assertNumQueries(1):
self.assertEqual(cache.get_many(['a', 'b']), {'a': 1, 'b': 2})
time.sleep(0.02)
with self.assertNumQueries(2):
self.assertEqual(cache.get_many(['a', 'b', 'expired']), {'a': 1, 'b': 2})
def test_delete_many_num_queries(self):
cache.set_many({'a': 1, 'b': 2, 'c': 3})
with self.assertNumQueries(1):
cache.delete_many(['a', 'b', 'c'])
def test_cull_count_queries(self):
old_max_entries = cache._max_entries
# Force _cull to delete on first cached record.
cache._max_entries = -1
with CaptureQueriesContext(connection) as captured_queries:
try:
cache.set('force_cull', 'value', 1000)
finally:
cache._max_entries = old_max_entries
num_count_queries = sum('COUNT' in query['sql'] for query in captured_queries)
self.assertEqual(num_count_queries, 1)
def test_delete_cursor_rowcount(self):
"""
The rowcount attribute should not be checked on a closed cursor.
"""
class MockedCursorWrapper(CursorWrapper):
is_closed = False
def close(self):
self.cursor.close()
self.is_closed = True
@property
def rowcount(self):
if self.is_closed:
raise Exception('Cursor is closed.')
return self.cursor.rowcount
cache.set_many({'a': 1, 'b': 2})
with mock.patch('django.db.backends.utils.CursorWrapper', MockedCursorWrapper):
self.assertIs(cache.delete('a'), True)
def test_zero_cull(self):
self._perform_cull_test('zero_cull', 50, 18)
def test_second_call_doesnt_crash(self):
out = io.StringIO()
management.call_command('createcachetable', stdout=out)
self.assertEqual(out.getvalue(), "Cache table 'test cache table' already exists.\n" * len(settings.CACHES))
@override_settings(CACHES=caches_setting_for_tests(
BACKEND='django.core.cache.backends.db.DatabaseCache',
# Use another table name to avoid the 'table already exists' message.
LOCATION='createcachetable_dry_run_mode'
))
def test_createcachetable_dry_run_mode(self):
out = io.StringIO()
management.call_command('createcachetable', dry_run=True, stdout=out)
output = out.getvalue()
self.assertTrue(output.startswith("CREATE TABLE"))
def test_createcachetable_with_table_argument(self):
"""
Delete and recreate cache table with legacy behavior (explicitly
specifying the table name).
"""
self.drop_table()
out = io.StringIO()
management.call_command(
'createcachetable',
'test cache table',
verbosity=2,
stdout=out,
)
self.assertEqual(out.getvalue(), "Cache table 'test cache table' created.\n")
@override_settings(USE_TZ=True)
class DBCacheWithTimeZoneTests(DBCacheTests):
pass
class DBCacheRouter:
"""A router that puts the cache table on the 'other' database."""
def db_for_read(self, model, **hints):
if model._meta.app_label == 'django_cache':
return 'other'
return None
def db_for_write(self, model, **hints):
if model._meta.app_label == 'django_cache':
return 'other'
return None
def allow_migrate(self, db, app_label, **hints):
if app_label == 'django_cache':
return db == 'other'
return None
@override_settings(
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.db.DatabaseCache',
'LOCATION': 'my_cache_table',
},
},
)
class CreateCacheTableForDBCacheTests(TestCase):
databases = {'default', 'other'}
@override_settings(DATABASE_ROUTERS=[DBCacheRouter()])
def test_createcachetable_observes_database_router(self):
# cache table should not be created on 'default'
with self.assertNumQueries(0, using='default'):
management.call_command('createcachetable', database='default', verbosity=0)
# cache table should be created on 'other'
# Queries:
# 1: check table doesn't already exist
# 2: create savepoint (if transactional DDL is supported)
# 3: create the table
# 4: create the index
# 5: release savepoint (if transactional DDL is supported)
num = 5 if connections['other'].features.can_rollback_ddl else 3
with self.assertNumQueries(num, using='other'):
management.call_command('createcachetable', database='other', verbosity=0)
class PicklingSideEffect:
def __init__(self, cache):
self.cache = cache
self.locked = False
def __getstate__(self):
self.locked = self.cache._lock.locked()
return {}
limit_locmem_entries = override_settings(CACHES=caches_setting_for_tests(
BACKEND='django.core.cache.backends.locmem.LocMemCache',
OPTIONS={'MAX_ENTRIES': 9},
))
@override_settings(CACHES=caches_setting_for_tests(
BACKEND='django.core.cache.backends.locmem.LocMemCache',
))
class LocMemCacheTests(BaseCacheTests, TestCase):
def setUp(self):
super().setUp()
# LocMem requires a hack to make the other caches
# share a data store with the 'normal' cache.
caches['prefix']._cache = cache._cache
caches['prefix']._expire_info = cache._expire_info
caches['v2']._cache = cache._cache
caches['v2']._expire_info = cache._expire_info
caches['custom_key']._cache = cache._cache
caches['custom_key']._expire_info = cache._expire_info
caches['custom_key2']._cache = cache._cache
caches['custom_key2']._expire_info = cache._expire_info
@override_settings(CACHES={
'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'},
'other': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
'LOCATION': 'other'
},
})
def test_multiple_caches(self):
"Multiple locmem caches are isolated"
cache.set('value', 42)
self.assertEqual(caches['default'].get('value'), 42)
self.assertIsNone(caches['other'].get('value'))
def test_locking_on_pickle(self):
"""#20613/#18541 -- Ensures pickling is done outside of the lock."""
bad_obj = PicklingSideEffect(cache)
cache.set('set', bad_obj)
self.assertFalse(bad_obj.locked, "Cache was locked during pickling")
self.assertIs(cache.add('add', bad_obj), True)
self.assertFalse(bad_obj.locked, "Cache was locked during pickling")
def test_incr_decr_timeout(self):
"""incr/decr does not modify expiry time (matches memcached behavior)"""
key = 'value'
_key = cache.make_key(key)
cache.set(key, 1, timeout=cache.default_timeout * 10)
expire = cache._expire_info[_key]
self.assertEqual(cache.incr(key), 2)
self.assertEqual(expire, cache._expire_info[_key])
self.assertEqual(cache.decr(key), 1)
self.assertEqual(expire, cache._expire_info[_key])
@limit_locmem_entries
def test_lru_get(self):
"""get() moves cache keys."""
for key in range(9):
cache.set(key, key, timeout=None)
for key in range(6):
self.assertEqual(cache.get(key), key)
cache.set(9, 9, timeout=None)
for key in range(6):
self.assertEqual(cache.get(key), key)
for key in range(6, 9):
self.assertIsNone(cache.get(key))
self.assertEqual(cache.get(9), 9)
@limit_locmem_entries
def test_lru_set(self):
"""set() moves cache keys."""
for key in range(9):
cache.set(key, key, timeout=None)
for key in range(3, 9):
cache.set(key, key, timeout=None)
cache.set(9, 9, timeout=None)
for key in range(3, 10):
self.assertEqual(cache.get(key), key)
for key in range(3):
self.assertIsNone(cache.get(key))
@limit_locmem_entries
def test_lru_incr(self):
"""incr() moves cache keys."""
for key in range(9):
cache.set(key, key, timeout=None)
for key in range(6):
self.assertEqual(cache.incr(key), key + 1)
cache.set(9, 9, timeout=None)
for key in range(6):
self.assertEqual(cache.get(key), key + 1)
for key in range(6, 9):
self.assertIsNone(cache.get(key))
self.assertEqual(cache.get(9), 9)
# memcached and redis backends aren't guaranteed to be available.
# To check the backends, the test settings file will need to contain at least
# one cache backend setting that points at your cache server.
configured_caches = {}
for _cache_params in settings.CACHES.values():
configured_caches[_cache_params['BACKEND']] = _cache_params
PyLibMCCache_params = configured_caches.get('django.core.cache.backends.memcached.PyLibMCCache')
PyMemcacheCache_params = configured_caches.get('django.core.cache.backends.memcached.PyMemcacheCache')
# The memcached backends don't support cull-related options like `MAX_ENTRIES`.
memcached_excluded_caches = {'cull', 'zero_cull'}
RedisCache_params = configured_caches.get('django.core.cache.backends.redis.RedisCache')
# The redis backend does not support cull-related options like `MAX_ENTRIES`.
redis_excluded_caches = {'cull', 'zero_cull'}
class BaseMemcachedTests(BaseCacheTests):
# By default it's assumed that the client doesn't clean up connections
# properly, in which case the backend must do so after each request.
should_disconnect_on_close = True
def test_location_multiple_servers(self):
locations = [
['server1.tld', 'server2:11211'],
'server1.tld;server2:11211',
'server1.tld,server2:11211',
]
for location in locations:
with self.subTest(location=location):
params = {'BACKEND': self.base_params['BACKEND'], 'LOCATION': location}
with self.settings(CACHES={'default': params}):
self.assertEqual(cache._servers, ['server1.tld', 'server2:11211'])
def _perform_invalid_key_test(self, key, expected_warning):
"""
While other backends merely warn, memcached should raise for an invalid
key.
"""
msg = expected_warning.replace(key, cache.make_key(key))
tests = [
('add', [key, 1]),
('get', [key]),
('set', [key, 1]),
('incr', [key]),
('decr', [key]),
('touch', [key]),
('delete', [key]),
('get_many', [[key, 'b']]),
('set_many', [{key: 1, 'b': 2}]),
('delete_many', [[key, 'b']]),
]
for operation, args in tests:
with self.subTest(operation=operation):
with self.assertRaises(InvalidCacheKey) as cm:
getattr(cache, operation)(*args)
self.assertEqual(str(cm.exception), msg)
def test_invalid_with_version_key_length(self):
# make_key() adds a version to the key and exceeds the limit.
key = 'a' * 248
expected_warning = (
'Cache key will cause errors if used with memcached: '
'%r (longer than %s)' % (key, 250)
)
self._perform_invalid_key_test(key, expected_warning)
def test_default_never_expiring_timeout(self):
# Regression test for #22845
with self.settings(CACHES=caches_setting_for_tests(
base=self.base_params,
exclude=memcached_excluded_caches,
TIMEOUT=None)):
cache.set('infinite_foo', 'bar')
self.assertEqual(cache.get('infinite_foo'), 'bar')
def test_default_far_future_timeout(self):
# Regression test for #22845
with self.settings(CACHES=caches_setting_for_tests(
base=self.base_params,
exclude=memcached_excluded_caches,
# 60*60*24*365, 1 year
TIMEOUT=31536000)):
cache.set('future_foo', 'bar')
self.assertEqual(cache.get('future_foo'), 'bar')
def test_memcached_deletes_key_on_failed_set(self):
# By default memcached allows objects up to 1MB. For the cache_db session
# backend to always use the current session, memcached needs to delete
# the old key if it fails to set.
max_value_length = 2 ** 20
cache.set('small_value', 'a')
self.assertEqual(cache.get('small_value'), 'a')
large_value = 'a' * (max_value_length + 1)
try:
cache.set('small_value', large_value)
except Exception:
# Most clients (e.g. pymemcache or pylibmc) raise when the value is
# too large. This test is primarily checking that the key was
# deleted, so the return/exception behavior for the set() itself is
# not important.
pass
# small_value should be deleted, or set if configured to accept larger values
value = cache.get('small_value')
self.assertTrue(value is None or value == large_value)
def test_close(self):
# For clients that don't manage their connections properly, the
# connection is closed when the request is complete.
signals.request_finished.disconnect(close_old_connections)
try:
with mock.patch.object(cache._class, 'disconnect_all', autospec=True) as mock_disconnect:
signals.request_finished.send(self.__class__)
self.assertIs(mock_disconnect.called, self.should_disconnect_on_close)
finally:
signals.request_finished.connect(close_old_connections)
def test_set_many_returns_failing_keys(self):
def fail_set_multi(mapping, *args, **kwargs):
return mapping.keys()
with mock.patch.object(cache._class, 'set_multi', side_effect=fail_set_multi):
failing_keys = cache.set_many({'key': 'value'})
self.assertEqual(failing_keys, ['key'])
# RemovedInDjango41Warning.
MemcachedCache_params = configured_caches.get('django.core.cache.backends.memcached.MemcachedCache')
@ignore_warnings(category=RemovedInDjango41Warning)
@unittest.skipUnless(MemcachedCache_params, "MemcachedCache backend not configured")
@override_settings(CACHES=caches_setting_for_tests(
base=MemcachedCache_params,
exclude=memcached_excluded_caches,
))
class MemcachedCacheTests(BaseMemcachedTests, TestCase):
base_params = MemcachedCache_params
supports_get_with_default = False
incr_decr_type_error = ValueError
def test_memcached_uses_highest_pickle_version(self):
# Regression test for #19810
for cache_key in settings.CACHES:
with self.subTest(cache_key=cache_key):
self.assertEqual(caches[cache_key]._cache.pickleProtocol, pickle.HIGHEST_PROTOCOL)
@override_settings(CACHES=caches_setting_for_tests(
base=MemcachedCache_params,
exclude=memcached_excluded_caches,
OPTIONS={'server_max_value_length': 9999},
))
def test_memcached_options(self):
self.assertEqual(cache._cache.server_max_value_length, 9999)
def test_default_used_when_none_is_set(self):
"""
python-memcached doesn't support default in get() so this test
overrides the one in BaseCacheTests.
"""
cache.set('key_default_none', None)
self.assertEqual(cache.get('key_default_none', default='default'), 'default')
class MemcachedCacheDeprecationTests(SimpleTestCase):
def test_warning(self):
from django.core.cache.backends.memcached import MemcachedCache
# Remove warnings filter on MemcachedCache deprecation warning, added
# in runtests.py.
warnings.filterwarnings(
'error',
'MemcachedCache is deprecated',
category=RemovedInDjango41Warning,
)
try:
msg = (
'MemcachedCache is deprecated in favor of PyMemcacheCache and '
'PyLibMCCache.'
)
with self.assertRaisesMessage(RemovedInDjango41Warning, msg):
MemcachedCache('127.0.0.1:11211', {})
finally:
warnings.filterwarnings(
'ignore',
'MemcachedCache is deprecated',
category=RemovedInDjango41Warning,
)
@unittest.skipUnless(PyLibMCCache_params, "PyLibMCCache backend not configured")
@override_settings(CACHES=caches_setting_for_tests(
base=PyLibMCCache_params,
exclude=memcached_excluded_caches,
))
class PyLibMCCacheTests(BaseMemcachedTests, TestCase):
base_params = PyLibMCCache_params
# libmemcached manages its own connections.
should_disconnect_on_close = False
@property
def incr_decr_type_error(self):
return cache._lib.ClientError
@override_settings(CACHES=caches_setting_for_tests(
base=PyLibMCCache_params,
exclude=memcached_excluded_caches,
OPTIONS={
'binary': True,
'behaviors': {'tcp_nodelay': True},
},
))
def test_pylibmc_options(self):
self.assertTrue(cache._cache.binary)
self.assertEqual(cache._cache.behaviors['tcp_nodelay'], int(True))
def test_pylibmc_client_servers(self):
backend = self.base_params['BACKEND']
tests = [
('unix:/run/memcached/socket', '/run/memcached/socket'),
('/run/memcached/socket', '/run/memcached/socket'),
('localhost', 'localhost'),
('localhost:11211', 'localhost:11211'),
('[::1]', '[::1]'),
('[::1]:11211', '[::1]:11211'),
('127.0.0.1', '127.0.0.1'),
('127.0.0.1:11211', '127.0.0.1:11211'),
]
for location, expected in tests:
settings = {'default': {'BACKEND': backend, 'LOCATION': location}}
with self.subTest(location), self.settings(CACHES=settings):
self.assertEqual(cache.client_servers, [expected])
@unittest.skipUnless(PyMemcacheCache_params, 'PyMemcacheCache backend not configured')
@override_settings(CACHES=caches_setting_for_tests(
base=PyMemcacheCache_params,
exclude=memcached_excluded_caches,
))
class PyMemcacheCacheTests(BaseMemcachedTests, TestCase):
base_params = PyMemcacheCache_params
@property
def incr_decr_type_error(self):
return cache._lib.exceptions.MemcacheClientError
def test_pymemcache_highest_pickle_version(self):
self.assertEqual(
cache._cache.default_kwargs['serde']._serialize_func.keywords['pickle_version'],
pickle.HIGHEST_PROTOCOL,
)
for cache_key in settings.CACHES:
for client_key, client in caches[cache_key]._cache.clients.items():
with self.subTest(cache_key=cache_key, server=client_key):
self.assertEqual(
client.serde._serialize_func.keywords['pickle_version'],
pickle.HIGHEST_PROTOCOL,
)
@override_settings(CACHES=caches_setting_for_tests(
base=PyMemcacheCache_params,
exclude=memcached_excluded_caches,
OPTIONS={'no_delay': True},
))
def test_pymemcache_options(self):
self.assertIs(cache._cache.default_kwargs['no_delay'], True)
@override_settings(CACHES=caches_setting_for_tests(
BACKEND='django.core.cache.backends.filebased.FileBasedCache',
))
class FileBasedCacheTests(BaseCacheTests, TestCase):
"""
Specific test cases for the file-based cache.
"""
def setUp(self):
super().setUp()
self.dirname = self.mkdtemp()
# Caches location cannot be modified through override_settings / modify_settings,
# hence settings are manipulated directly here and the setting_changed signal
# is triggered manually.
for cache_params in settings.CACHES.values():
cache_params['LOCATION'] = self.dirname
setting_changed.send(self.__class__, setting='CACHES', enter=False)
def tearDown(self):
super().tearDown()
# Call parent first, as cache.clear() may recreate cache base directory
shutil.rmtree(self.dirname)
def mkdtemp(self):
return tempfile.mkdtemp()
def test_ignores_non_cache_files(self):
fname = os.path.join(self.dirname, 'not-a-cache-file')
with open(fname, 'w'):
os.utime(fname, None)
cache.clear()
self.assertTrue(os.path.exists(fname),
'Expected cache.clear to ignore non cache files')
os.remove(fname)
def test_clear_does_not_remove_cache_dir(self):
cache.clear()
self.assertTrue(os.path.exists(self.dirname),
'Expected cache.clear to keep the cache dir')
def test_creates_cache_dir_if_nonexistent(self):
os.rmdir(self.dirname)
cache.set('foo', 'bar')
self.assertTrue(os.path.exists(self.dirname))
def test_get_ignores_enoent(self):
cache.set('foo', 'bar')
os.unlink(cache._key_to_file('foo'))
# Returns the default instead of erroring.
self.assertEqual(cache.get('foo', 'baz'), 'baz')
@skipIf(
sys.platform == 'win32',
'Windows only partially supports umasks and chmod.',
)
def test_cache_dir_permissions(self):
os.rmdir(self.dirname)
dir_path = Path(self.dirname) / 'nested' / 'filebasedcache'
for cache_params in settings.CACHES.values():
cache_params['LOCATION'] = dir_path
setting_changed.send(self.__class__, setting='CACHES', enter=False)
cache.set('foo', 'bar')
self.assertIs(dir_path.exists(), True)
tests = [
dir_path,
dir_path.parent,
dir_path.parent.parent,
]
for directory in tests:
with self.subTest(directory=directory):
dir_mode = directory.stat().st_mode & 0o777
self.assertEqual(dir_mode, 0o700)
def test_get_does_not_ignore_non_filenotfound_exceptions(self):
with mock.patch('builtins.open', side_effect=OSError):
with self.assertRaises(OSError):
cache.get('foo')
def test_empty_cache_file_considered_expired(self):
cache_file = cache._key_to_file('foo')
with open(cache_file, 'wb') as fh:
fh.write(b'')
with open(cache_file, 'rb') as fh:
self.assertIs(cache._is_expired(fh), True)
@unittest.skipUnless(RedisCache_params, "Redis backend not configured")
@override_settings(CACHES=caches_setting_for_tests(
base=RedisCache_params,
exclude=redis_excluded_caches,
))
class RedisCacheTests(BaseCacheTests, TestCase):
def setUp(self):
import redis
super().setUp()
self.lib = redis
@property
def incr_decr_type_error(self):
return self.lib.ResponseError
def test_cache_client_class(self):
self.assertIs(cache._class, RedisCacheClient)
self.assertIsInstance(cache._cache, RedisCacheClient)
def test_get_backend_timeout_method(self):
positive_timeout = 10
positive_backend_timeout = cache.get_backend_timeout(positive_timeout)
self.assertEqual(positive_backend_timeout, positive_timeout)
negative_timeout = -5
negative_backend_timeout = cache.get_backend_timeout(negative_timeout)
self.assertEqual(negative_backend_timeout, 0)
none_timeout = None
none_backend_timeout = cache.get_backend_timeout(none_timeout)
self.assertIsNone(none_backend_timeout)
def test_get_connection_pool_index(self):
pool_index = cache._cache._get_connection_pool_index(write=True)
self.assertEqual(pool_index, 0)
pool_index = cache._cache._get_connection_pool_index(write=False)
if len(cache._cache._servers) == 1:
self.assertEqual(pool_index, 0)
else:
self.assertGreater(pool_index, 0)
self.assertLess(pool_index, len(cache._cache._servers))
def test_get_connection_pool(self):
pool = cache._cache._get_connection_pool(write=True)
self.assertIsInstance(pool, self.lib.ConnectionPool)
pool = cache._cache._get_connection_pool(write=False)
self.assertIsInstance(pool, self.lib.ConnectionPool)
def test_get_client(self):
self.assertIsInstance(cache._cache.get_client(), self.lib.Redis)
class FileBasedCachePathLibTests(FileBasedCacheTests):
def mkdtemp(self):
tmp_dir = super().mkdtemp()
return Path(tmp_dir)
@override_settings(CACHES={
'default': {
'BACKEND': 'cache.liberal_backend.CacheClass',
},
})
class CustomCacheKeyValidationTests(SimpleTestCase):
"""
Tests for the ability to mixin a custom ``validate_key`` method to
a custom cache backend that otherwise inherits from a builtin
backend, and override the default key validation. Refs #6447.
"""
def test_custom_key_validation(self):
# this key is both longer than 250 characters, and has spaces
key = 'some key with spaces' * 15
val = 'a value'
cache.set(key, val)
self.assertEqual(cache.get(key), val)
@override_settings(
CACHES={
'default': {
'BACKEND': 'cache.closeable_cache.CacheClass',
}
}
)
class CacheClosingTests(SimpleTestCase):
def test_close(self):
self.assertFalse(cache.closed)
signals.request_finished.send(self.__class__)
self.assertTrue(cache.closed)
def test_close_only_initialized(self):
with self.settings(CACHES={
'cache_1': {
'BACKEND': 'cache.closeable_cache.CacheClass',
},
'cache_2': {
'BACKEND': 'cache.closeable_cache.CacheClass',
},
}):
self.assertEqual(caches.all(initialized_only=True), [])
signals.request_finished.send(self.__class__)
self.assertEqual(caches.all(initialized_only=True), [])
DEFAULT_MEMORY_CACHES_SETTINGS = {
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
'LOCATION': 'unique-snowflake',
}
}
NEVER_EXPIRING_CACHES_SETTINGS = copy.deepcopy(DEFAULT_MEMORY_CACHES_SETTINGS)
NEVER_EXPIRING_CACHES_SETTINGS['default']['TIMEOUT'] = None
class DefaultNonExpiringCacheKeyTests(SimpleTestCase):
"""
Settings having Cache arguments with a TIMEOUT=None create Caches that will
set non-expiring keys.
"""
def setUp(self):
# The 5 minute (300 seconds) default expiration time for keys is
# defined in the implementation of the initializer method of the
# BaseCache type.
self.DEFAULT_TIMEOUT = caches[DEFAULT_CACHE_ALIAS].default_timeout
def tearDown(self):
del(self.DEFAULT_TIMEOUT)
def test_default_expiration_time_for_keys_is_5_minutes(self):
"""The default expiration time of a cache key is 5 minutes.
This value is defined in
django.core.cache.backends.base.BaseCache.__init__().
"""
self.assertEqual(300, self.DEFAULT_TIMEOUT)
def test_caches_with_unset_timeout_has_correct_default_timeout(self):
"""Caches that have the TIMEOUT parameter undefined in the default
settings will use the default 5 minute timeout.
"""
cache = caches[DEFAULT_CACHE_ALIAS]
self.assertEqual(self.DEFAULT_TIMEOUT, cache.default_timeout)
@override_settings(CACHES=NEVER_EXPIRING_CACHES_SETTINGS)
def test_caches_set_with_timeout_as_none_has_correct_default_timeout(self):
"""Memory caches that have the TIMEOUT parameter set to `None` in the
default settings with have `None` as the default timeout.
This means "no timeout".
"""
cache = caches[DEFAULT_CACHE_ALIAS]
self.assertIsNone(cache.default_timeout)
self.assertIsNone(cache.get_backend_timeout())
@override_settings(CACHES=DEFAULT_MEMORY_CACHES_SETTINGS)
def test_caches_with_unset_timeout_set_expiring_key(self):
"""Memory caches that have the TIMEOUT parameter unset will set cache
keys having the default 5 minute timeout.
"""
key = "my-key"
value = "my-value"
cache = caches[DEFAULT_CACHE_ALIAS]
cache.set(key, value)
cache_key = cache.make_key(key)
self.assertIsNotNone(cache._expire_info[cache_key])
@override_settings(CACHES=NEVER_EXPIRING_CACHES_SETTINGS)
def test_caches_set_with_timeout_as_none_set_non_expiring_key(self):
"""Memory caches that have the TIMEOUT parameter set to `None` will set
a non expiring key by default.
"""
key = "another-key"
value = "another-value"
cache = caches[DEFAULT_CACHE_ALIAS]
cache.set(key, value)
cache_key = cache.make_key(key)
self.assertIsNone(cache._expire_info[cache_key])
@override_settings(
CACHE_MIDDLEWARE_KEY_PREFIX='settingsprefix',
CACHE_MIDDLEWARE_SECONDS=1,
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
},
},
USE_I18N=False,
ALLOWED_HOSTS=['.example.com'],
)
class CacheUtils(SimpleTestCase):
"""TestCase for django.utils.cache functions."""
host = 'www.example.com'
path = '/cache/test/'
factory = RequestFactory(HTTP_HOST=host)
def tearDown(self):
cache.clear()
def _get_request_cache(self, method='GET', query_string=None, update_cache=None):
request = self._get_request(self.host, self.path,
method, query_string=query_string)
request._cache_update_cache = update_cache if update_cache else True
return request
def test_patch_vary_headers(self):
headers = (
# Initial vary, new headers, resulting vary.
(None, ('Accept-Encoding',), 'Accept-Encoding'),
('Accept-Encoding', ('accept-encoding',), 'Accept-Encoding'),
('Accept-Encoding', ('ACCEPT-ENCODING',), 'Accept-Encoding'),
('Cookie', ('Accept-Encoding',), 'Cookie, Accept-Encoding'),
('Cookie, Accept-Encoding', ('Accept-Encoding',), 'Cookie, Accept-Encoding'),
('Cookie, Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
(None, ('Accept-Encoding', 'COOKIE'), 'Accept-Encoding, COOKIE'),
('Cookie, Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
('Cookie , Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
('*', ('Accept-Language', 'Cookie'), '*'),
('Accept-Language, Cookie', ('*',), '*'),
)
for initial_vary, newheaders, resulting_vary in headers:
with self.subTest(initial_vary=initial_vary, newheaders=newheaders):
response = HttpResponse()
if initial_vary is not None:
response.headers['Vary'] = initial_vary
patch_vary_headers(response, newheaders)
self.assertEqual(response.headers['Vary'], resulting_vary)
def test_get_cache_key(self):
request = self.factory.get(self.path)
response = HttpResponse()
# Expect None if no headers have been set yet.
self.assertIsNone(get_cache_key(request))
# Set headers to an empty list.
learn_cache_key(request, response)
self.assertEqual(
get_cache_key(request),
'views.decorators.cache.cache_page.settingsprefix.GET.'
'18a03f9c9649f7d684af5db3524f5c99.d41d8cd98f00b204e9800998ecf8427e'
)
# A specified key_prefix is taken into account.
key_prefix = 'localprefix'
learn_cache_key(request, response, key_prefix=key_prefix)
self.assertEqual(
get_cache_key(request, key_prefix=key_prefix),
'views.decorators.cache.cache_page.localprefix.GET.'
'18a03f9c9649f7d684af5db3524f5c99.d41d8cd98f00b204e9800998ecf8427e'
)
def test_get_cache_key_with_query(self):
request = self.factory.get(self.path, {'test': 1})
response = HttpResponse()
# Expect None if no headers have been set yet.
self.assertIsNone(get_cache_key(request))
# Set headers to an empty list.
learn_cache_key(request, response)
# The querystring is taken into account.
self.assertEqual(
get_cache_key(request),
'views.decorators.cache.cache_page.settingsprefix.GET.'
'beaf87a9a99ee81c673ea2d67ccbec2a.d41d8cd98f00b204e9800998ecf8427e'
)
def test_cache_key_varies_by_url(self):
"""
get_cache_key keys differ by fully-qualified URL instead of path
"""
request1 = self.factory.get(self.path, HTTP_HOST='sub-1.example.com')
learn_cache_key(request1, HttpResponse())
request2 = self.factory.get(self.path, HTTP_HOST='sub-2.example.com')
learn_cache_key(request2, HttpResponse())
self.assertNotEqual(get_cache_key(request1), get_cache_key(request2))
def test_learn_cache_key(self):
request = self.factory.head(self.path)
response = HttpResponse()
response.headers['Vary'] = 'Pony'
# Make sure that the Vary header is added to the key hash
learn_cache_key(request, response)
self.assertEqual(
get_cache_key(request),
'views.decorators.cache.cache_page.settingsprefix.GET.'
'18a03f9c9649f7d684af5db3524f5c99.d41d8cd98f00b204e9800998ecf8427e'
)
def test_patch_cache_control(self):
tests = (
# Initial Cache-Control, kwargs to patch_cache_control, expected Cache-Control parts
(None, {'private': True}, {'private'}),
('', {'private': True}, {'private'}),
# no-cache.
('', {'no_cache': 'Set-Cookie'}, {'no-cache=Set-Cookie'}),
('', {'no-cache': 'Set-Cookie'}, {'no-cache=Set-Cookie'}),
('no-cache=Set-Cookie', {'no_cache': True}, {'no-cache'}),
('no-cache=Set-Cookie,no-cache=Link', {'no_cache': True}, {'no-cache'}),
('no-cache=Set-Cookie', {'no_cache': 'Link'}, {'no-cache=Set-Cookie', 'no-cache=Link'}),
(
'no-cache=Set-Cookie,no-cache=Link',
{'no_cache': 'Custom'},
{'no-cache=Set-Cookie', 'no-cache=Link', 'no-cache=Custom'},
),
# Test whether private/public attributes are mutually exclusive
('private', {'private': True}, {'private'}),
('private', {'public': True}, {'public'}),
('public', {'public': True}, {'public'}),
('public', {'private': True}, {'private'}),
('must-revalidate,max-age=60,private', {'public': True}, {'must-revalidate', 'max-age=60', 'public'}),
('must-revalidate,max-age=60,public', {'private': True}, {'must-revalidate', 'max-age=60', 'private'}),
('must-revalidate,max-age=60', {'public': True}, {'must-revalidate', 'max-age=60', 'public'}),
)
cc_delim_re = re.compile(r'\s*,\s*')
for initial_cc, newheaders, expected_cc in tests:
with self.subTest(initial_cc=initial_cc, newheaders=newheaders):
response = HttpResponse()
if initial_cc is not None:
response.headers['Cache-Control'] = initial_cc
patch_cache_control(response, **newheaders)
parts = set(cc_delim_re.split(response.headers['Cache-Control']))
self.assertEqual(parts, expected_cc)
@override_settings(
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
'KEY_PREFIX': 'cacheprefix',
},
},
)
class PrefixedCacheUtils(CacheUtils):
pass
@override_settings(
CACHE_MIDDLEWARE_SECONDS=60,
CACHE_MIDDLEWARE_KEY_PREFIX='test',
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
},
},
)
class CacheHEADTest(SimpleTestCase):
path = '/cache/test/'
factory = RequestFactory()
def tearDown(self):
cache.clear()
def _set_cache(self, request, msg):
return UpdateCacheMiddleware(lambda req: HttpResponse(msg))(request)
def test_head_caches_correctly(self):
test_content = 'test content'
request = self.factory.head(self.path)
request._cache_update_cache = True
self._set_cache(request, test_content)
request = self.factory.head(self.path)
request._cache_update_cache = True
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNotNone(get_cache_data)
self.assertEqual(test_content.encode(), get_cache_data.content)
def test_head_with_cached_get(self):
test_content = 'test content'
request = self.factory.get(self.path)
request._cache_update_cache = True
self._set_cache(request, test_content)
request = self.factory.head(self.path)
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNotNone(get_cache_data)
self.assertEqual(test_content.encode(), get_cache_data.content)
@override_settings(
CACHE_MIDDLEWARE_KEY_PREFIX='settingsprefix',
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
},
},
LANGUAGES=[
('en', 'English'),
('es', 'Spanish'),
],
)
class CacheI18nTest(SimpleTestCase):
path = '/cache/test/'
factory = RequestFactory()
def tearDown(self):
cache.clear()
@override_settings(USE_I18N=True, USE_TZ=False)
def test_cache_key_i18n_translation(self):
request = self.factory.get(self.path)
lang = translation.get_language()
response = HttpResponse()
key = learn_cache_key(request, response)
self.assertIn(lang, key, "Cache keys should include the language name when translation is active")
key2 = get_cache_key(request)
self.assertEqual(key, key2)
def check_accept_language_vary(self, accept_language, vary, reference_key):
request = self.factory.get(self.path)
request.META['HTTP_ACCEPT_LANGUAGE'] = accept_language
request.META['HTTP_ACCEPT_ENCODING'] = 'gzip;q=1.0, identity; q=0.5, *;q=0'
response = HttpResponse()
response.headers['Vary'] = vary
key = learn_cache_key(request, response)
key2 = get_cache_key(request)
self.assertEqual(key, reference_key)
self.assertEqual(key2, reference_key)
@override_settings(USE_I18N=True, USE_TZ=False)
def test_cache_key_i18n_translation_accept_language(self):
lang = translation.get_language()
self.assertEqual(lang, 'en')
request = self.factory.get(self.path)
request.META['HTTP_ACCEPT_ENCODING'] = 'gzip;q=1.0, identity; q=0.5, *;q=0'
response = HttpResponse()
response.headers['Vary'] = 'accept-encoding'
key = learn_cache_key(request, response)
self.assertIn(lang, key, "Cache keys should include the language name when translation is active")
self.check_accept_language_vary(
'en-us',
'cookie, accept-language, accept-encoding',
key
)
self.check_accept_language_vary(
'en-US',
'cookie, accept-encoding, accept-language',
key
)
self.check_accept_language_vary(
'en-US,en;q=0.8',
'accept-encoding, accept-language, cookie',
key
)
self.check_accept_language_vary(
'en-US,en;q=0.8,ko;q=0.6',
'accept-language, cookie, accept-encoding',
key
)
self.check_accept_language_vary(
'ko-kr,ko;q=0.8,en-us;q=0.5,en;q=0.3 ',
'accept-encoding, cookie, accept-language',
key
)
self.check_accept_language_vary(
'ko-KR,ko;q=0.8,en-US;q=0.6,en;q=0.4',
'accept-language, accept-encoding, cookie',
key
)
self.check_accept_language_vary(
'ko;q=1.0,en;q=0.5',
'cookie, accept-language, accept-encoding',
key
)
self.check_accept_language_vary(
'ko, en',
'cookie, accept-encoding, accept-language',
key
)
self.check_accept_language_vary(
'ko-KR, en-US',
'accept-encoding, accept-language, cookie',
key
)
@override_settings(USE_I18N=False, USE_TZ=True)
def test_cache_key_i18n_timezone(self):
request = self.factory.get(self.path)
tz = timezone.get_current_timezone_name()
response = HttpResponse()
key = learn_cache_key(request, response)
self.assertIn(tz, key, "Cache keys should include the time zone name when time zones are active")
key2 = get_cache_key(request)
self.assertEqual(key, key2)
@override_settings(USE_I18N=False)
def test_cache_key_no_i18n(self):
request = self.factory.get(self.path)
lang = translation.get_language()
tz = timezone.get_current_timezone_name()
response = HttpResponse()
key = learn_cache_key(request, response)
self.assertNotIn(lang, key, "Cache keys shouldn't include the language name when i18n isn't active")
self.assertNotIn(tz, key, "Cache keys shouldn't include the time zone name when i18n isn't active")
@override_settings(
CACHE_MIDDLEWARE_KEY_PREFIX="test",
CACHE_MIDDLEWARE_SECONDS=60,
USE_I18N=True,
)
def test_middleware(self):
def set_cache(request, lang, msg):
def get_response(req):
return HttpResponse(msg)
translation.activate(lang)
return UpdateCacheMiddleware(get_response)(request)
# cache with non empty request.GET
request = self.factory.get(self.path, {'foo': 'bar', 'other': 'true'})
request._cache_update_cache = True
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
# first access, cache must return None
self.assertIsNone(get_cache_data)
content = 'Check for cache with QUERY_STRING'
def get_response(req):
return HttpResponse(content)
UpdateCacheMiddleware(get_response)(request)
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
# cache must return content
self.assertIsNotNone(get_cache_data)
self.assertEqual(get_cache_data.content, content.encode())
# different QUERY_STRING, cache must be empty
request = self.factory.get(self.path, {'foo': 'bar', 'somethingelse': 'true'})
request._cache_update_cache = True
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNone(get_cache_data)
# i18n tests
en_message = "Hello world!"
es_message = "Hola mundo!"
request = self.factory.get(self.path)
request._cache_update_cache = True
set_cache(request, 'en', en_message)
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
# The cache can be recovered
self.assertIsNotNone(get_cache_data)
self.assertEqual(get_cache_data.content, en_message.encode())
# change the session language and set content
request = self.factory.get(self.path)
request._cache_update_cache = True
set_cache(request, 'es', es_message)
# change again the language
translation.activate('en')
# retrieve the content from cache
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertEqual(get_cache_data.content, en_message.encode())
# change again the language
translation.activate('es')
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertEqual(get_cache_data.content, es_message.encode())
# reset the language
translation.deactivate()
@override_settings(
CACHE_MIDDLEWARE_KEY_PREFIX="test",
CACHE_MIDDLEWARE_SECONDS=60,
)
def test_middleware_doesnt_cache_streaming_response(self):
request = self.factory.get(self.path)
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNone(get_cache_data)
def get_stream_response(req):
return StreamingHttpResponse(['Check for cache with streaming content.'])
UpdateCacheMiddleware(get_stream_response)(request)
get_cache_data = FetchFromCacheMiddleware(empty_response).process_request(request)
self.assertIsNone(get_cache_data)
@override_settings(
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
'KEY_PREFIX': 'cacheprefix'
},
},
)
class PrefixedCacheI18nTest(CacheI18nTest):
pass
def hello_world_view(request, value):
return HttpResponse('Hello World %s' % value)
def csrf_view(request):
return HttpResponse(csrf(request)['csrf_token'])
@override_settings(
CACHE_MIDDLEWARE_ALIAS='other',
CACHE_MIDDLEWARE_KEY_PREFIX='middlewareprefix',
CACHE_MIDDLEWARE_SECONDS=30,
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
},
'other': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
'LOCATION': 'other',
'TIMEOUT': '1',
},
},
)
class CacheMiddlewareTest(SimpleTestCase):
factory = RequestFactory()
def setUp(self):
self.default_cache = caches['default']
self.other_cache = caches['other']
def tearDown(self):
self.default_cache.clear()
self.other_cache.clear()
super().tearDown()
def test_constructor(self):
"""
Ensure the constructor is correctly distinguishing between usage of CacheMiddleware as
Middleware vs. usage of CacheMiddleware as view decorator and setting attributes
appropriately.
"""
# If only one argument is passed in construction, it's being used as
# middleware.
middleware = CacheMiddleware(empty_response)
# Now test object attributes against values defined in setUp above
self.assertEqual(middleware.cache_timeout, 30)
self.assertEqual(middleware.key_prefix, 'middlewareprefix')
self.assertEqual(middleware.cache_alias, 'other')
self.assertEqual(middleware.cache, self.other_cache)
# If more arguments are being passed in construction, it's being used
# as a decorator. First, test with "defaults":
as_view_decorator = CacheMiddleware(empty_response, cache_alias=None, key_prefix=None)
self.assertEqual(as_view_decorator.cache_timeout, 30) # Timeout value for 'default' cache, i.e. 30
self.assertEqual(as_view_decorator.key_prefix, '')
# Value of DEFAULT_CACHE_ALIAS from django.core.cache
self.assertEqual(as_view_decorator.cache_alias, 'default')
self.assertEqual(as_view_decorator.cache, self.default_cache)
# Next, test with custom values:
as_view_decorator_with_custom = CacheMiddleware(
hello_world_view, cache_timeout=60, cache_alias='other', key_prefix='foo'
)
self.assertEqual(as_view_decorator_with_custom.cache_timeout, 60)
self.assertEqual(as_view_decorator_with_custom.key_prefix, 'foo')
self.assertEqual(as_view_decorator_with_custom.cache_alias, 'other')
self.assertEqual(as_view_decorator_with_custom.cache, self.other_cache)
def test_update_cache_middleware_constructor(self):
middleware = UpdateCacheMiddleware(empty_response)
self.assertEqual(middleware.cache_timeout, 30)
self.assertIsNone(middleware.page_timeout)
self.assertEqual(middleware.key_prefix, 'middlewareprefix')
self.assertEqual(middleware.cache_alias, 'other')
self.assertEqual(middleware.cache, self.other_cache)
def test_fetch_cache_middleware_constructor(self):
middleware = FetchFromCacheMiddleware(empty_response)
self.assertEqual(middleware.key_prefix, 'middlewareprefix')
self.assertEqual(middleware.cache_alias, 'other')
self.assertEqual(middleware.cache, self.other_cache)
def test_middleware(self):
middleware = CacheMiddleware(hello_world_view)
prefix_middleware = CacheMiddleware(hello_world_view, key_prefix='prefix1')
timeout_middleware = CacheMiddleware(hello_world_view, cache_timeout=1)
request = self.factory.get('/view/')
# Put the request through the request middleware
result = middleware.process_request(request)
self.assertIsNone(result)
response = hello_world_view(request, '1')
# Now put the response through the response middleware
response = middleware.process_response(request, response)
# Repeating the request should result in a cache hit
result = middleware.process_request(request)
self.assertIsNotNone(result)
self.assertEqual(result.content, b'Hello World 1')
# The same request through a different middleware won't hit
result = prefix_middleware.process_request(request)
self.assertIsNone(result)
# The same request with a timeout _will_ hit
result = timeout_middleware.process_request(request)
self.assertIsNotNone(result)
self.assertEqual(result.content, b'Hello World 1')
def test_view_decorator(self):
# decorate the same view with different cache decorators
default_view = cache_page(3)(hello_world_view)
default_with_prefix_view = cache_page(3, key_prefix='prefix1')(hello_world_view)
explicit_default_view = cache_page(3, cache='default')(hello_world_view)
explicit_default_with_prefix_view = cache_page(3, cache='default', key_prefix='prefix1')(hello_world_view)
other_view = cache_page(1, cache='other')(hello_world_view)
other_with_prefix_view = cache_page(1, cache='other', key_prefix='prefix2')(hello_world_view)
request = self.factory.get('/view/')
# Request the view once
response = default_view(request, '1')
self.assertEqual(response.content, b'Hello World 1')
# Request again -- hit the cache
response = default_view(request, '2')
self.assertEqual(response.content, b'Hello World 1')
# Requesting the same view with the explicit cache should yield the same result
response = explicit_default_view(request, '3')
self.assertEqual(response.content, b'Hello World 1')
# Requesting with a prefix will hit a different cache key
response = explicit_default_with_prefix_view(request, '4')
self.assertEqual(response.content, b'Hello World 4')
# Hitting the same view again gives a cache hit
response = explicit_default_with_prefix_view(request, '5')
self.assertEqual(response.content, b'Hello World 4')
# And going back to the implicit cache will hit the same cache
response = default_with_prefix_view(request, '6')
self.assertEqual(response.content, b'Hello World 4')
# Requesting from an alternate cache won't hit cache
response = other_view(request, '7')
self.assertEqual(response.content, b'Hello World 7')
# But a repeated hit will hit cache
response = other_view(request, '8')
self.assertEqual(response.content, b'Hello World 7')
# And prefixing the alternate cache yields yet another cache entry
response = other_with_prefix_view(request, '9')
self.assertEqual(response.content, b'Hello World 9')
# But if we wait a couple of seconds...
time.sleep(2)
# ... the default cache will still hit
caches['default']
response = default_view(request, '11')
self.assertEqual(response.content, b'Hello World 1')
# ... the default cache with a prefix will still hit
response = default_with_prefix_view(request, '12')
self.assertEqual(response.content, b'Hello World 4')
# ... the explicit default cache will still hit
response = explicit_default_view(request, '13')
self.assertEqual(response.content, b'Hello World 1')
# ... the explicit default cache with a prefix will still hit
response = explicit_default_with_prefix_view(request, '14')
self.assertEqual(response.content, b'Hello World 4')
# .. but a rapidly expiring cache won't hit
response = other_view(request, '15')
self.assertEqual(response.content, b'Hello World 15')
# .. even if it has a prefix
response = other_with_prefix_view(request, '16')
self.assertEqual(response.content, b'Hello World 16')
def test_cache_page_timeout(self):
# Page timeout takes precedence over the "max-age" section of the
# "Cache-Control".
tests = [
(1, 3), # max_age < page_timeout.
(3, 1), # max_age > page_timeout.
]
for max_age, page_timeout in tests:
with self.subTest(max_age=max_age, page_timeout=page_timeout):
view = cache_page(timeout=page_timeout)(
cache_control(max_age=max_age)(hello_world_view)
)
request = self.factory.get('/view/')
response = view(request, '1')
self.assertEqual(response.content, b'Hello World 1')
time.sleep(1)
response = view(request, '2')
self.assertEqual(
response.content,
b'Hello World 1' if page_timeout > max_age else b'Hello World 2',
)
cache.clear()
def test_cached_control_private_not_cached(self):
"""Responses with 'Cache-Control: private' are not cached."""
view_with_private_cache = cache_page(3)(cache_control(private=True)(hello_world_view))
request = self.factory.get('/view/')
response = view_with_private_cache(request, '1')
self.assertEqual(response.content, b'Hello World 1')
response = view_with_private_cache(request, '2')
self.assertEqual(response.content, b'Hello World 2')
def test_sensitive_cookie_not_cached(self):
"""
Django must prevent caching of responses that set a user-specific (and
maybe security sensitive) cookie in response to a cookie-less request.
"""
request = self.factory.get('/view/')
csrf_middleware = CsrfViewMiddleware(csrf_view)
csrf_middleware.process_view(request, csrf_view, (), {})
cache_middleware = CacheMiddleware(csrf_middleware)
self.assertIsNone(cache_middleware.process_request(request))
cache_middleware(request)
# Inserting a CSRF cookie in a cookie-less request prevented caching.
self.assertIsNone(cache_middleware.process_request(request))
def test_304_response_has_http_caching_headers_but_not_cached(self):
original_view = mock.Mock(return_value=HttpResponseNotModified())
view = cache_page(2)(original_view)
request = self.factory.get('/view/')
# The view shouldn't be cached on the second call.
view(request).close()
response = view(request)
response.close()
self.assertEqual(original_view.call_count, 2)
self.assertIsInstance(response, HttpResponseNotModified)
self.assertIn('Cache-Control', response)
self.assertIn('Expires', response)
@override_settings(
CACHE_MIDDLEWARE_KEY_PREFIX='settingsprefix',
CACHE_MIDDLEWARE_SECONDS=1,
CACHES={
'default': {
'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
},
},
USE_I18N=False,
)
class TestWithTemplateResponse(SimpleTestCase):
"""
Tests various headers w/ TemplateResponse.
Most are probably redundant since they manipulate the same object
anyway but the ETag header is 'special' because it relies on the
content being complete (which is not necessarily always the case
with a TemplateResponse)
"""
path = '/cache/test/'
factory = RequestFactory()
def tearDown(self):
cache.clear()
def test_patch_vary_headers(self):
headers = (
# Initial vary, new headers, resulting vary.
(None, ('Accept-Encoding',), 'Accept-Encoding'),
('Accept-Encoding', ('accept-encoding',), 'Accept-Encoding'),
('Accept-Encoding', ('ACCEPT-ENCODING',), 'Accept-Encoding'),
('Cookie', ('Accept-Encoding',), 'Cookie, Accept-Encoding'),
('Cookie, Accept-Encoding', ('Accept-Encoding',), 'Cookie, Accept-Encoding'),
('Cookie, Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
(None, ('Accept-Encoding', 'COOKIE'), 'Accept-Encoding, COOKIE'),
('Cookie, Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
('Cookie , Accept-Encoding', ('Accept-Encoding', 'cookie'), 'Cookie, Accept-Encoding'),
)
for initial_vary, newheaders, resulting_vary in headers:
with self.subTest(initial_vary=initial_vary, newheaders=newheaders):
template = engines['django'].from_string("This is a test")
response = TemplateResponse(HttpRequest(), template)
if initial_vary is not None:
response.headers['Vary'] = initial_vary
patch_vary_headers(response, newheaders)
self.assertEqual(response.headers['Vary'], resulting_vary)
def test_get_cache_key(self):
request = self.factory.get(self.path)
template = engines['django'].from_string("This is a test")
response = TemplateResponse(HttpRequest(), template)
key_prefix = 'localprefix'
# Expect None if no headers have been set yet.
self.assertIsNone(get_cache_key(request))
# Set headers to an empty list.
learn_cache_key(request, response)
self.assertEqual(
get_cache_key(request),
'views.decorators.cache.cache_page.settingsprefix.GET.'
'58a0a05c8a5620f813686ff969c26853.d41d8cd98f00b204e9800998ecf8427e'
)
# A specified key_prefix is taken into account.
learn_cache_key(request, response, key_prefix=key_prefix)
self.assertEqual(
get_cache_key(request, key_prefix=key_prefix),
'views.decorators.cache.cache_page.localprefix.GET.'
'58a0a05c8a5620f813686ff969c26853.d41d8cd98f00b204e9800998ecf8427e'
)
def test_get_cache_key_with_query(self):
request = self.factory.get(self.path, {'test': 1})
template = engines['django'].from_string("This is a test")
response = TemplateResponse(HttpRequest(), template)
# Expect None if no headers have been set yet.
self.assertIsNone(get_cache_key(request))
# Set headers to an empty list.
learn_cache_key(request, response)
# The querystring is taken into account.
self.assertEqual(
get_cache_key(request),
'views.decorators.cache.cache_page.settingsprefix.GET.'
'0f1c2d56633c943073c4569d9a9502fe.d41d8cd98f00b204e9800998ecf8427e'
)
class TestMakeTemplateFragmentKey(SimpleTestCase):
def test_without_vary_on(self):
key = make_template_fragment_key('a.fragment')
self.assertEqual(key, 'template.cache.a.fragment.d41d8cd98f00b204e9800998ecf8427e')
def test_with_one_vary_on(self):
key = make_template_fragment_key('foo', ['abc'])
self.assertEqual(key, 'template.cache.foo.493e283d571a73056196f1a68efd0f66')
def test_with_many_vary_on(self):
key = make_template_fragment_key('bar', ['abc', 'def'])
self.assertEqual(key, 'template.cache.bar.17c1a507a0cb58384f4c639067a93520')
def test_proper_escaping(self):
key = make_template_fragment_key('spam', ['abc:def%'])
self.assertEqual(key, 'template.cache.spam.06c8ae8e8c430b69fb0a6443504153dc')
def test_with_ints_vary_on(self):
key = make_template_fragment_key('foo', [1, 2, 3, 4, 5])
self.assertEqual(key, 'template.cache.foo.7ae8fd2e0d25d651c683bdeebdb29461')
def test_with_unicode_vary_on(self):
key = make_template_fragment_key('foo', ['42º', '😀'])
self.assertEqual(key, 'template.cache.foo.7ced1c94e543668590ba39b3c08b0237')
def test_long_vary_on(self):
key = make_template_fragment_key('foo', ['x' * 10000])
self.assertEqual(key, 'template.cache.foo.3670b349b5124aa56bdb50678b02b23a')
class CacheHandlerTest(SimpleTestCase):
def test_same_instance(self):
"""
Attempting to retrieve the same alias should yield the same instance.
"""
cache1 = caches['default']
cache2 = caches['default']
self.assertIs(cache1, cache2)
def test_per_thread(self):
"""
Requesting the same alias from separate threads should yield separate
instances.
"""
c = []
def runner():
c.append(caches['default'])
for x in range(2):
t = threading.Thread(target=runner)
t.start()
t.join()
self.assertIsNot(c[0], c[1])
def test_nonexistent_alias(self):
msg = "The connection 'nonexistent' doesn't exist."
with self.assertRaisesMessage(InvalidCacheBackendError, msg):
caches['nonexistent']
def test_nonexistent_backend(self):
test_caches = CacheHandler({
'invalid_backend': {
'BACKEND': 'django.nonexistent.NonexistentBackend',
},
})
msg = (
"Could not find backend 'django.nonexistent.NonexistentBackend': "
"No module named 'django.nonexistent'"
)
with self.assertRaisesMessage(InvalidCacheBackendError, msg):
test_caches['invalid_backend']
def test_all(self):
test_caches = CacheHandler({
'cache_1': {
'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
},
'cache_2': {
'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
},
})
self.assertEqual(test_caches.all(initialized_only=True), [])
cache_1 = test_caches['cache_1']
self.assertEqual(test_caches.all(initialized_only=True), [cache_1])
self.assertEqual(len(test_caches.all()), 2)
# .all() initializes all caches.
self.assertEqual(len(test_caches.all(initialized_only=True)), 2)
self.assertEqual(test_caches.all(), test_caches.all(initialized_only=True))
|
bb0b63ff3e5f9cffc6ed960cad83fe5645c819254a03ccce4134c87a4ea7877a | import datetime
import itertools
import unittest
from copy import copy
from unittest import mock
from django.core.exceptions import FieldError
from django.core.management.color import no_style
from django.db import (
DatabaseError, DataError, IntegrityError, OperationalError, connection,
)
from django.db.models import (
CASCADE, PROTECT, AutoField, BigAutoField, BigIntegerField, BinaryField,
BooleanField, CharField, CheckConstraint, DateField, DateTimeField,
DecimalField, F, FloatField, ForeignKey, ForeignObject, Index,
IntegerField, JSONField, ManyToManyField, Model, OneToOneField, OrderBy,
PositiveIntegerField, Q, SlugField, SmallAutoField, SmallIntegerField,
TextField, TimeField, UniqueConstraint, UUIDField, Value,
)
from django.db.models.fields.json import KeyTextTransform
from django.db.models.functions import Abs, Cast, Collate, Lower, Random, Upper
from django.db.models.indexes import IndexExpression
from django.db.transaction import TransactionManagementError, atomic
from django.test import (
TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature,
)
from django.test.utils import (
CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.utils import timezone
from .fields import (
CustomManyToManyField, InheritedManyToManyField, MediumBlobField,
)
from .models import (
Author, AuthorCharFieldWithIndex, AuthorTextFieldWithIndex,
AuthorWithDefaultHeight, AuthorWithEvenLongerName, AuthorWithIndexedName,
AuthorWithIndexedNameAndBirthday, AuthorWithUniqueName,
AuthorWithUniqueNameAndBirthday, Book, BookForeignObj, BookWeak,
BookWithLongName, BookWithO2O, BookWithoutAuthor, BookWithSlug, IntegerPK,
Node, Note, NoteRename, Tag, TagIndexed, TagM2MTest, TagUniqueRename,
Thing, UniqueTest, new_apps,
)
class SchemaTests(TransactionTestCase):
"""
Tests for the schema-alteration code.
Be aware that these tests are more liable than most to false results,
as sometimes the code to check if a test has worked is almost as complex
as the code it is testing.
"""
available_apps = []
models = [
Author, AuthorCharFieldWithIndex, AuthorTextFieldWithIndex,
AuthorWithDefaultHeight, AuthorWithEvenLongerName, Book, BookWeak,
BookWithLongName, BookWithO2O, BookWithSlug, IntegerPK, Node, Note,
Tag, TagIndexed, TagM2MTest, TagUniqueRename, Thing, UniqueTest,
]
# Utility functions
def setUp(self):
# local_models should contain test dependent model classes that will be
# automatically removed from the app cache on test tear down.
self.local_models = []
# isolated_local_models contains models that are in test methods
# decorated with @isolate_apps.
self.isolated_local_models = []
def tearDown(self):
# Delete any tables made for our models
self.delete_tables()
new_apps.clear_cache()
for model in new_apps.get_models():
model._meta._expire_cache()
if 'schema' in new_apps.all_models:
for model in self.local_models:
for many_to_many in model._meta.many_to_many:
through = many_to_many.remote_field.through
if through and through._meta.auto_created:
del new_apps.all_models['schema'][through._meta.model_name]
del new_apps.all_models['schema'][model._meta.model_name]
if self.isolated_local_models:
with connection.schema_editor() as editor:
for model in self.isolated_local_models:
editor.delete_model(model)
def delete_tables(self):
"Deletes all model tables for our models for a clean test environment"
converter = connection.introspection.identifier_converter
with connection.schema_editor() as editor:
connection.disable_constraint_checking()
table_names = connection.introspection.table_names()
if connection.features.ignores_table_name_case:
table_names = [table_name.lower() for table_name in table_names]
for model in itertools.chain(SchemaTests.models, self.local_models):
tbl = converter(model._meta.db_table)
if connection.features.ignores_table_name_case:
tbl = tbl.lower()
if tbl in table_names:
editor.delete_model(model)
table_names.remove(tbl)
connection.enable_constraint_checking()
def column_classes(self, model):
with connection.cursor() as cursor:
columns = {
d[0]: (connection.introspection.get_field_type(d[1], d), d)
for d in connection.introspection.get_table_description(
cursor,
model._meta.db_table,
)
}
# SQLite has a different format for field_type
for name, (type, desc) in columns.items():
if isinstance(type, tuple):
columns[name] = (type[0], desc)
# SQLite also doesn't error properly
if not columns:
raise DatabaseError("Table does not exist (empty pragma)")
return columns
def get_primary_key(self, table):
with connection.cursor() as cursor:
return connection.introspection.get_primary_key_column(cursor, table)
def get_indexes(self, table):
"""
Get the indexes on the table using a new cursor.
"""
with connection.cursor() as cursor:
return [
c['columns'][0]
for c in connection.introspection.get_constraints(cursor, table).values()
if c['index'] and len(c['columns']) == 1
]
def get_uniques(self, table):
with connection.cursor() as cursor:
return [
c['columns'][0]
for c in connection.introspection.get_constraints(cursor, table).values()
if c['unique'] and len(c['columns']) == 1
]
def get_constraints(self, table):
"""
Get the constraints on a table using a new cursor.
"""
with connection.cursor() as cursor:
return connection.introspection.get_constraints(cursor, table)
def get_constraints_for_column(self, model, column_name):
constraints = self.get_constraints(model._meta.db_table)
constraints_for_column = []
for name, details in constraints.items():
if details['columns'] == [column_name]:
constraints_for_column.append(name)
return sorted(constraints_for_column)
def check_added_field_default(self, schema_editor, model, field, field_name, expected_default,
cast_function=None):
with connection.cursor() as cursor:
schema_editor.add_field(model, field)
cursor.execute("SELECT {} FROM {};".format(field_name, model._meta.db_table))
database_default = cursor.fetchall()[0][0]
if cast_function and type(database_default) != type(expected_default):
database_default = cast_function(database_default)
self.assertEqual(database_default, expected_default)
def get_constraints_count(self, table, column, fk_to):
"""
Return a dict with keys 'fks', 'uniques, and 'indexes' indicating the
number of foreign keys, unique constraints, and indexes on
`table`.`column`. The `fk_to` argument is a 2-tuple specifying the
expected foreign key relationship's (table, column).
"""
with connection.cursor() as cursor:
constraints = connection.introspection.get_constraints(cursor, table)
counts = {'fks': 0, 'uniques': 0, 'indexes': 0}
for c in constraints.values():
if c['columns'] == [column]:
if c['foreign_key'] == fk_to:
counts['fks'] += 1
if c['unique']:
counts['uniques'] += 1
elif c['index']:
counts['indexes'] += 1
return counts
def get_column_collation(self, table, column):
with connection.cursor() as cursor:
return next(
f.collation
for f in connection.introspection.get_table_description(cursor, table)
if f.name == column
)
def assertIndexOrder(self, table, index, order):
constraints = self.get_constraints(table)
self.assertIn(index, constraints)
index_orders = constraints[index]['orders']
self.assertTrue(all(val == expected for val, expected in zip(index_orders, order)))
def assertForeignKeyExists(self, model, column, expected_fk_table, field='id'):
"""
Fail if the FK constraint on `model.Meta.db_table`.`column` to
`expected_fk_table`.id doesn't exist.
"""
constraints = self.get_constraints(model._meta.db_table)
constraint_fk = None
for details in constraints.values():
if details['columns'] == [column] and details['foreign_key']:
constraint_fk = details['foreign_key']
break
self.assertEqual(constraint_fk, (expected_fk_table, field))
def assertForeignKeyNotExists(self, model, column, expected_fk_table):
with self.assertRaises(AssertionError):
self.assertForeignKeyExists(model, column, expected_fk_table)
# Tests
def test_creation_deletion(self):
"""
Tries creating a model's table, and then deleting it.
"""
with connection.schema_editor() as editor:
# Create the table
editor.create_model(Author)
# The table is there
list(Author.objects.all())
# Clean up that table
editor.delete_model(Author)
# No deferred SQL should be left over.
self.assertEqual(editor.deferred_sql, [])
# The table is gone
with self.assertRaises(DatabaseError):
list(Author.objects.all())
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk(self):
"Creating tables out of FK order, then repointing, works"
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Book)
editor.create_model(Author)
editor.create_model(Tag)
# Initial tables are there
list(Author.objects.all())
list(Book.objects.all())
# Make sure the FK constraint is present
with self.assertRaises(IntegrityError):
Book.objects.create(
author_id=1,
title="Much Ado About Foreign Keys",
pub_date=datetime.datetime.now(),
)
# Repoint the FK constraint
old_field = Book._meta.get_field("author")
new_field = ForeignKey(Tag, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
self.assertForeignKeyExists(Book, 'author_id', 'schema_tag')
@skipUnlessDBFeature('can_create_inline_fk')
def test_inline_fk(self):
# Create some tables.
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.create_model(Note)
self.assertForeignKeyNotExists(Note, 'book_id', 'schema_book')
# Add a foreign key from one to the other.
with connection.schema_editor() as editor:
new_field = ForeignKey(Book, CASCADE)
new_field.set_attributes_from_name('book')
editor.add_field(Note, new_field)
self.assertForeignKeyExists(Note, 'book_id', 'schema_book')
# Creating a FK field with a constraint uses a single statement without
# a deferred ALTER TABLE.
self.assertFalse([
sql for sql in (str(statement) for statement in editor.deferred_sql)
if sql.startswith('ALTER TABLE') and 'ADD CONSTRAINT' in sql
])
@skipUnlessDBFeature('can_create_inline_fk')
def test_add_inline_fk_update_data(self):
with connection.schema_editor() as editor:
editor.create_model(Node)
# Add an inline foreign key and update data in the same transaction.
new_field = ForeignKey(Node, CASCADE, related_name='new_fk', null=True)
new_field.set_attributes_from_name('new_parent_fk')
parent = Node.objects.create()
with connection.schema_editor() as editor:
editor.add_field(Node, new_field)
editor.execute('UPDATE schema_node SET new_parent_fk_id = %s;', [parent.pk])
assertIndex = (
self.assertIn
if connection.features.indexes_foreign_keys
else self.assertNotIn
)
assertIndex('new_parent_fk_id', self.get_indexes(Node._meta.db_table))
@skipUnlessDBFeature(
'can_create_inline_fk',
'allows_multiple_constraints_on_same_fields',
)
@isolate_apps('schema')
def test_add_inline_fk_index_update_data(self):
class Node(Model):
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Node)
# Add an inline foreign key, update data, and an index in the same
# transaction.
new_field = ForeignKey(Node, CASCADE, related_name='new_fk', null=True)
new_field.set_attributes_from_name('new_parent_fk')
parent = Node.objects.create()
with connection.schema_editor() as editor:
editor.add_field(Node, new_field)
Node._meta.add_field(new_field)
editor.execute('UPDATE schema_node SET new_parent_fk_id = %s;', [parent.pk])
editor.add_index(Node, Index(fields=['new_parent_fk'], name='new_parent_inline_fk_idx'))
self.assertIn('new_parent_fk_id', self.get_indexes(Node._meta.db_table))
@skipUnlessDBFeature('supports_foreign_keys')
def test_char_field_with_db_index_to_fk(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorCharFieldWithIndex)
# Change CharField to FK
old_field = AuthorCharFieldWithIndex._meta.get_field('char_field')
new_field = ForeignKey(Author, CASCADE, blank=True)
new_field.set_attributes_from_name('char_field')
with connection.schema_editor() as editor:
editor.alter_field(AuthorCharFieldWithIndex, old_field, new_field, strict=True)
self.assertForeignKeyExists(AuthorCharFieldWithIndex, 'char_field_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
@skipUnlessDBFeature('supports_index_on_text_field')
def test_text_field_with_db_index_to_fk(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorTextFieldWithIndex)
# Change TextField to FK
old_field = AuthorTextFieldWithIndex._meta.get_field('text_field')
new_field = ForeignKey(Author, CASCADE, blank=True)
new_field.set_attributes_from_name('text_field')
with connection.schema_editor() as editor:
editor.alter_field(AuthorTextFieldWithIndex, old_field, new_field, strict=True)
self.assertForeignKeyExists(AuthorTextFieldWithIndex, 'text_field_id', 'schema_author')
@isolate_apps('schema')
def test_char_field_pk_to_auto_field(self):
class Foo(Model):
id = CharField(max_length=255, primary_key=True)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Foo
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk_to_proxy(self):
"Creating a FK to a proxy model creates database constraints."
class AuthorProxy(Author):
class Meta:
app_label = 'schema'
apps = new_apps
proxy = True
class AuthorRef(Model):
author = ForeignKey(AuthorProxy, on_delete=CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [AuthorProxy, AuthorRef]
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorRef)
self.assertForeignKeyExists(AuthorRef, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk_db_constraint(self):
"The db_constraint parameter is respected"
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(Author)
editor.create_model(BookWeak)
# Initial tables are there
list(Author.objects.all())
list(Tag.objects.all())
list(BookWeak.objects.all())
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
# Make a db_constraint=False FK
new_field = ForeignKey(Tag, CASCADE, db_constraint=False)
new_field.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
self.assertForeignKeyNotExists(Author, 'tag_id', 'schema_tag')
# Alter to one with a constraint
new_field2 = ForeignKey(Tag, CASCADE)
new_field2.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
self.assertForeignKeyExists(Author, 'tag_id', 'schema_tag')
# Alter to one without a constraint again
new_field2 = ForeignKey(Tag, CASCADE)
new_field2.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field2, new_field, strict=True)
self.assertForeignKeyNotExists(Author, 'tag_id', 'schema_tag')
@isolate_apps('schema')
def test_no_db_constraint_added_during_primary_key_change(self):
"""
When a primary key that's pointed to by a ForeignKey with
db_constraint=False is altered, a foreign key constraint isn't added.
"""
class Author(Model):
class Meta:
app_label = 'schema'
class BookWeak(Model):
author = ForeignKey(Author, CASCADE, db_constraint=False)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWeak)
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
old_field = Author._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Author
new_field.set_attributes_from_name('id')
# @isolate_apps() and inner models are needed to have the model
# relations populated, otherwise this doesn't act as a regression test.
self.assertEqual(len(new_field.model._meta.related_objects), 1)
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
def _test_m2m_db_constraint(self, M2MFieldClass):
class LocalAuthorWithM2M(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorWithM2M]
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(LocalAuthorWithM2M)
# Initial tables are there
list(LocalAuthorWithM2M.objects.all())
list(Tag.objects.all())
# Make a db_constraint=False FK
new_field = M2MFieldClass(Tag, related_name="authors", db_constraint=False)
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
# Add the field
with connection.schema_editor() as editor:
editor.add_field(LocalAuthorWithM2M, new_field)
self.assertForeignKeyNotExists(new_field.remote_field.through, 'tag_id', 'schema_tag')
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint(self):
self._test_m2m_db_constraint(ManyToManyField)
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint_custom(self):
self._test_m2m_db_constraint(CustomManyToManyField)
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint_inherited(self):
self._test_m2m_db_constraint(InheritedManyToManyField)
def test_add_field(self):
"""
Tests adding fields to models
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add the new field
new_field = IntegerField(null=True)
new_field.set_attributes_from_name("age")
with CaptureQueriesContext(connection) as ctx, connection.schema_editor() as editor:
editor.add_field(Author, new_field)
drop_default_sql = editor.sql_alter_column_no_default % {
'column': editor.quote_name(new_field.name),
}
self.assertFalse(any(drop_default_sql in query['sql'] for query in ctx.captured_queries))
columns = self.column_classes(Author)
self.assertEqual(columns['age'][0], connection.features.introspected_field_types['IntegerField'])
self.assertTrue(columns['age'][1][6])
def test_add_field_remove_field(self):
"""
Adding a field and removing it removes all deferred sql referring to it.
"""
with connection.schema_editor() as editor:
# Create a table with a unique constraint on the slug field.
editor.create_model(Tag)
# Remove the slug column.
editor.remove_field(Tag, Tag._meta.get_field('slug'))
self.assertEqual(editor.deferred_sql, [])
def test_add_field_temp_default(self):
"""
Tests adding fields to models with a temporary default
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add a not-null field
new_field = CharField(max_length=30, default="Godwin")
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
self.assertEqual(columns['surname'][0], connection.features.introspected_field_types['CharField'])
self.assertEqual(columns['surname'][1][6],
connection.features.interprets_empty_strings_as_nulls)
def test_add_field_temp_default_boolean(self):
"""
Tests adding fields to models with a temporary default where
the default is False. (#21783)
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add a not-null field
new_field = BooleanField(default=False)
new_field.set_attributes_from_name("awesome")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# BooleanField are stored as TINYINT(1) on MySQL.
field_type = columns['awesome'][0]
self.assertEqual(field_type, connection.features.introspected_field_types['BooleanField'])
def test_add_field_default_transform(self):
"""
Tests adding fields to models with a default that is not directly
valid in the database (#22581)
"""
class TestTransformField(IntegerField):
# Weird field that saves the count of items in its value
def get_default(self):
return self.default
def get_prep_value(self, value):
if value is None:
return 0
return len(value)
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add the field with a default it needs to cast (to string in this case)
new_field = TestTransformField(default={1: 2})
new_field.set_attributes_from_name("thing")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure the field is there
columns = self.column_classes(Author)
field_type, field_info = columns['thing']
self.assertEqual(field_type, connection.features.introspected_field_types['IntegerField'])
# Make sure the values were transformed correctly
self.assertEqual(Author.objects.extra(where=["thing = 1"]).count(), 2)
def test_add_field_binary(self):
"""
Tests binary fields get a sane default (#22851)
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the new field
new_field = BinaryField(blank=True)
new_field.set_attributes_from_name("bits")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# MySQL annoyingly uses the same backend, so it'll come back as one of
# these two types.
self.assertIn(columns['bits'][0], ("BinaryField", "TextField"))
@unittest.skipUnless(connection.vendor == 'mysql', "MySQL specific")
def test_add_binaryfield_mediumblob(self):
"""
Test adding a custom-sized binary field on MySQL (#24846).
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the new field with default
new_field = MediumBlobField(blank=True, default=b'123')
new_field.set_attributes_from_name('bits')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# Introspection treats BLOBs as TextFields
self.assertEqual(columns['bits'][0], "TextField")
def test_alter(self):
"""
Tests simple altering of fields
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
self.assertEqual(bool(columns['name'][1][6]), bool(connection.features.interprets_empty_strings_as_nulls))
# Alter the name field to a TextField
old_field = Author._meta.get_field("name")
new_field = TextField(null=True)
new_field.set_attributes_from_name("name")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], "TextField")
self.assertTrue(columns['name'][1][6])
# Change nullability again
new_field2 = TextField(null=False)
new_field2.set_attributes_from_name("name")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], "TextField")
self.assertEqual(bool(columns['name'][1][6]), bool(connection.features.interprets_empty_strings_as_nulls))
def test_alter_auto_field_to_integer_field(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change AutoField to IntegerField
old_field = Author._meta.get_field('id')
new_field = IntegerField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
# Now that ID is an IntegerField, the database raises an error if it
# isn't provided.
if not connection.features.supports_unspecified_pk:
with self.assertRaises(DatabaseError):
Author.objects.create()
def test_alter_auto_field_to_char_field(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change AutoField to CharField
old_field = Author._meta.get_field('id')
new_field = CharField(primary_key=True, max_length=50)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
@isolate_apps('schema')
def test_alter_auto_field_quoted_db_column(self):
class Foo(Model):
id = AutoField(primary_key=True, db_column='"quoted_id"')
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Foo
new_field.db_column = '"quoted_id"'
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
Foo.objects.create()
def test_alter_not_unique_field_to_primary_key(self):
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change UUIDField to primary key.
old_field = Author._meta.get_field('uuid')
new_field = UUIDField(primary_key=True)
new_field.set_attributes_from_name('uuid')
new_field.model = Author
with connection.schema_editor() as editor:
editor.remove_field(Author, Author._meta.get_field('id'))
editor.alter_field(Author, old_field, new_field, strict=True)
@isolate_apps('schema')
def test_alter_primary_key_quoted_db_table(self):
class Foo(Model):
class Meta:
app_label = 'schema'
db_table = '"foo"'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Foo
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
Foo.objects.create()
def test_alter_text_field(self):
# Regression for "BLOB/TEXT column 'info' can't have a default value")
# on MySQL.
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field("info")
new_field = TextField(blank=True)
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
def test_alter_text_field_to_not_null_with_default_value(self):
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field('address')
new_field = TextField(blank=True, default='', null=False)
new_field.set_attributes_from_name('address')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
@skipUnlessDBFeature('can_defer_constraint_checks', 'can_rollback_ddl')
def test_alter_fk_checks_deferred_constraints(self):
"""
#25492 - Altering a foreign key's structure and data in the same
transaction.
"""
with connection.schema_editor() as editor:
editor.create_model(Node)
old_field = Node._meta.get_field('parent')
new_field = ForeignKey(Node, CASCADE)
new_field.set_attributes_from_name('parent')
parent = Node.objects.create()
with connection.schema_editor() as editor:
# Update the parent FK to create a deferred constraint check.
Node.objects.update(parent=parent)
editor.alter_field(Node, old_field, new_field, strict=True)
def test_alter_text_field_to_date_field(self):
"""
#25002 - Test conversion of text field to date field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='1988-05-05')
old_field = Note._meta.get_field('info')
new_field = DateField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
def test_alter_text_field_to_datetime_field(self):
"""
#25002 - Test conversion of text field to datetime field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='1988-05-05 3:16:17.4567')
old_field = Note._meta.get_field('info')
new_field = DateTimeField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
def test_alter_text_field_to_time_field(self):
"""
#25002 - Test conversion of text field to time field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='3:16:17.4567')
old_field = Note._meta.get_field('info')
new_field = TimeField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
@skipIfDBFeature('interprets_empty_strings_as_nulls')
def test_alter_textual_field_keep_null_status(self):
"""
Changing a field type shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
old_field = Note._meta.get_field("info")
new_field = CharField(max_length=50)
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
@skipUnlessDBFeature('interprets_empty_strings_as_nulls')
def test_alter_textual_field_not_null_to_null(self):
"""
Nullability for textual fields is preserved on databases that
interpret empty strings as NULLs.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
columns = self.column_classes(Author)
# Field is nullable.
self.assertTrue(columns['uuid'][1][6])
# Change to NOT NULL.
old_field = Author._meta.get_field('uuid')
new_field = SlugField(null=False, blank=True)
new_field.set_attributes_from_name('uuid')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
# Nullability is preserved.
self.assertTrue(columns['uuid'][1][6])
def test_alter_numeric_field_keep_null_status(self):
"""
Changing a field type shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(UniqueTest)
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=None, slug='aaa')
old_field = UniqueTest._meta.get_field("year")
new_field = BigIntegerField()
new_field.set_attributes_from_name("year")
with connection.schema_editor() as editor:
editor.alter_field(UniqueTest, old_field, new_field, strict=True)
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=None, slug='bbb')
def test_alter_null_to_not_null(self):
"""
#23609 - Tests handling of default values when altering from NULL to NOT NULL.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertTrue(columns['height'][1][6])
# Create some test data
Author.objects.create(name='Not null author', height=12)
Author.objects.create(name='Null author')
# Verify null value
self.assertEqual(Author.objects.get(name='Not null author').height, 12)
self.assertIsNone(Author.objects.get(name='Null author').height)
# Alter the height field to NOT NULL with default
old_field = Author._meta.get_field("height")
new_field = PositiveIntegerField(default=42)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertFalse(columns['height'][1][6])
# Verify default value
self.assertEqual(Author.objects.get(name='Not null author').height, 12)
self.assertEqual(Author.objects.get(name='Null author').height, 42)
def test_alter_charfield_to_null(self):
"""
#24307 - Should skip an alter statement on databases with
interprets_empty_strings_as_nulls when changing a CharField to null.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change the CharField to null
old_field = Author._meta.get_field('name')
new_field = copy(old_field)
new_field.null = True
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_char_field_decrease_length(self):
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
Author.objects.create(name='x' * 255)
# Change max_length of CharField.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=254)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(254)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(Author, old_field, new_field, strict=True)
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_field_with_custom_db_type(self):
from django.contrib.postgres.fields import ArrayField
class Foo(Model):
field = ArrayField(CharField(max_length=255))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('field')
new_field = ArrayField(CharField(max_length=16))
new_field.set_attributes_from_name('field')
new_field.model = Foo
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_array_field_decrease_base_field_length(self):
from django.contrib.postgres.fields import ArrayField
class ArrayModel(Model):
field = ArrayField(CharField(max_length=16))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(ArrayModel)
self.isolated_local_models = [ArrayModel]
ArrayModel.objects.create(field=['x' * 16])
old_field = ArrayModel._meta.get_field('field')
new_field = ArrayField(CharField(max_length=15))
new_field.set_attributes_from_name('field')
new_field.model = ArrayModel
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(15)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_array_field_decrease_nested_base_field_length(self):
from django.contrib.postgres.fields import ArrayField
class ArrayModel(Model):
field = ArrayField(ArrayField(CharField(max_length=16)))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(ArrayModel)
self.isolated_local_models = [ArrayModel]
ArrayModel.objects.create(field=[['x' * 16]])
old_field = ArrayModel._meta.get_field('field')
new_field = ArrayField(ArrayField(CharField(max_length=15)))
new_field.set_attributes_from_name('field')
new_field.model = ArrayModel
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(15)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
def test_alter_textfield_to_null(self):
"""
#24307 - Should skip an alter statement on databases with
interprets_empty_strings_as_nulls when changing a TextField to null.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Note)
# Change the TextField to null
old_field = Note._meta.get_field('info')
new_field = copy(old_field)
new_field.null = True
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
@skipUnlessDBFeature('supports_combined_alters')
def test_alter_null_to_not_null_keeping_default(self):
"""
#23738 - Can change a nullable field with default to non-nullable
with the same default.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(AuthorWithDefaultHeight)
# Ensure the field is right to begin with
columns = self.column_classes(AuthorWithDefaultHeight)
self.assertTrue(columns['height'][1][6])
# Alter the height field to NOT NULL keeping the previous default
old_field = AuthorWithDefaultHeight._meta.get_field("height")
new_field = PositiveIntegerField(default=42)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithDefaultHeight, old_field, new_field, strict=True)
columns = self.column_classes(AuthorWithDefaultHeight)
self.assertFalse(columns['height'][1][6])
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_fk(self):
"""
Tests altering of FKs
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the field is right to begin with
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
# Alter the FK
old_field = Book._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE, editable=False)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_to_fk(self):
"""
#24447 - Tests adding a FK constraint for an existing column
"""
class LocalBook(Model):
author = IntegerField()
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBook]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(LocalBook)
# Ensure no FK constraint exists
constraints = self.get_constraints(LocalBook._meta.db_table)
for details in constraints.values():
if details['foreign_key']:
self.fail('Found an unexpected FK constraint to %s' % details['columns'])
old_field = LocalBook._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(LocalBook, old_field, new_field, strict=True)
self.assertForeignKeyExists(LocalBook, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_o2o_to_fk(self):
"""
#24163 - Tests altering of OneToOneField to ForeignKey
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
# Ensure the field is right to begin with
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is unique
author = Author.objects.create(name="Joe")
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
BookWithO2O.objects.all().delete()
self.assertForeignKeyExists(BookWithO2O, 'author_id', 'schema_author')
# Alter the OneToOneField to ForeignKey
old_field = BookWithO2O._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is not unique anymore
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_fk_to_o2o(self):
"""
#24163 - Tests altering of ForeignKey to OneToOneField
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the field is right to begin with
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is not unique
author = Author.objects.create(name="Joe")
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
Book.objects.all().delete()
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
# Alter the ForeignKey to OneToOneField
old_field = Book._meta.get_field("author")
new_field = OneToOneField(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is unique now
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
self.assertForeignKeyExists(BookWithO2O, 'author_id', 'schema_author')
def test_alter_field_fk_to_o2o(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
# Check the index is right to begin with.
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
old_field = Book._meta.get_field('author')
new_field = OneToOneField(Author, CASCADE)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The index on ForeignKey is replaced with a unique constraint for OneToOneField.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
def test_alter_field_fk_keeps_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
# Check the index is right to begin with.
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
old_field = Book._meta.get_field('author')
# on_delete changed from CASCADE.
new_field = ForeignKey(Author, PROTECT)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The index remains.
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
def test_alter_field_o2o_to_fk(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
# Check the unique constraint is right to begin with.
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
old_field = BookWithO2O._meta.get_field('author')
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The unique constraint on OneToOneField is replaced with an index for ForeignKey.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 0, 'indexes': 1})
def test_alter_field_o2o_keeps_unique(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
# Check the unique constraint is right to begin with.
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
old_field = BookWithO2O._meta.get_field('author')
# on_delete changed from CASCADE.
new_field = OneToOneField(Author, PROTECT)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The unique constraint remains.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
@skipUnlessDBFeature('ignores_table_name_case')
def test_alter_db_table_case(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Alter the case of the table
old_table_name = Author._meta.db_table
with connection.schema_editor() as editor:
editor.alter_db_table(Author, old_table_name, old_table_name.upper())
def test_alter_implicit_id_to_explicit(self):
"""
Should be able to convert an implicit "id" field to an explicit "id"
primary key field.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field("id")
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name("id")
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
# This will fail if DROP DEFAULT is inadvertently executed on this
# field which drops the id sequence, at least on PostgreSQL.
Author.objects.create(name='Foo')
Author.objects.create(name='Bar')
def test_alter_autofield_pk_to_bigautofield_pk_sequence_owner(self):
"""
Converting an implicit PK to BigAutoField(primary_key=True) should keep
a sequence owner on PostgreSQL.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
Author.objects.create(name='Foo', pk=1)
with connection.cursor() as cursor:
sequence_reset_sqls = connection.ops.sequence_reset_sql(no_style(), [Author])
if sequence_reset_sqls:
cursor.execute(sequence_reset_sqls[0])
# Fail on PostgreSQL if sequence is missing an owner.
self.assertIsNotNone(Author.objects.create(name='Bar'))
def test_alter_autofield_pk_to_smallautofield_pk_sequence_owner(self):
"""
Converting an implicit PK to SmallAutoField(primary_key=True) should
keep a sequence owner on PostgreSQL.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('id')
new_field = SmallAutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
Author.objects.create(name='Foo', pk=1)
with connection.cursor() as cursor:
sequence_reset_sqls = connection.ops.sequence_reset_sql(no_style(), [Author])
if sequence_reset_sqls:
cursor.execute(sequence_reset_sqls[0])
# Fail on PostgreSQL if sequence is missing an owner.
self.assertIsNotNone(Author.objects.create(name='Bar'))
def test_alter_int_pk_to_autofield_pk(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
AutoField(primary_key=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
old_field = IntegerPK._meta.get_field('i')
new_field = AutoField(primary_key=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# A model representing the updated model.
class IntegerPKToAutoField(Model):
i = AutoField(primary_key=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = IntegerPK._meta.db_table
# An id (i) is generated by the database.
obj = IntegerPKToAutoField.objects.create(j=1)
self.assertIsNotNone(obj.i)
def test_alter_int_pk_to_bigautofield_pk(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
BigAutoField(primary_key=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
old_field = IntegerPK._meta.get_field('i')
new_field = BigAutoField(primary_key=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# A model representing the updated model.
class IntegerPKToBigAutoField(Model):
i = BigAutoField(primary_key=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = IntegerPK._meta.db_table
# An id (i) is generated by the database.
obj = IntegerPKToBigAutoField.objects.create(j=1)
self.assertIsNotNone(obj.i)
@isolate_apps('schema')
def test_alter_smallint_pk_to_smallautofield_pk(self):
"""
Should be able to rename an SmallIntegerField(primary_key=True) to
SmallAutoField(primary_key=True).
"""
class SmallIntegerPK(Model):
i = SmallIntegerField(primary_key=True)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(SmallIntegerPK)
self.isolated_local_models = [SmallIntegerPK]
old_field = SmallIntegerPK._meta.get_field('i')
new_field = SmallAutoField(primary_key=True)
new_field.model = SmallIntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(SmallIntegerPK, old_field, new_field, strict=True)
def test_alter_int_pk_to_int_unique(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
IntegerField(unique=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
# Delete the old PK
old_field = IntegerPK._meta.get_field('i')
new_field = IntegerField(unique=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# The primary key constraint is gone. Result depends on database:
# 'id' for SQLite, None for others (must not be 'i').
self.assertIn(self.get_primary_key(IntegerPK._meta.db_table), ('id', None))
# Set up a model class as it currently stands. The original IntegerPK
# class is now out of date and some backends make use of the whole
# model class when modifying a field (such as sqlite3 when remaking a
# table) so an outdated model class leads to incorrect results.
class Transitional(Model):
i = IntegerField(unique=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = 'INTEGERPK'
# model requires a new PK
old_field = Transitional._meta.get_field('j')
new_field = IntegerField(primary_key=True)
new_field.model = Transitional
new_field.set_attributes_from_name('j')
with connection.schema_editor() as editor:
editor.alter_field(Transitional, old_field, new_field, strict=True)
# Create a model class representing the updated model.
class IntegerUnique(Model):
i = IntegerField(unique=True)
j = IntegerField(primary_key=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = 'INTEGERPK'
# Ensure unique constraint works.
IntegerUnique.objects.create(i=1, j=1)
with self.assertRaises(IntegrityError):
IntegerUnique.objects.create(i=1, j=2)
def test_rename(self):
"""
Tests simple altering of fields
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
self.assertNotIn("display_name", columns)
# Alter the name field's name
old_field = Author._meta.get_field("name")
new_field = CharField(max_length=254)
new_field.set_attributes_from_name("display_name")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['display_name'][0], connection.features.introspected_field_types['CharField'])
self.assertNotIn("name", columns)
@isolate_apps('schema')
def test_rename_referenced_field(self):
class Author(Model):
name = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE, to_field='name')
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_field(Author, Author._meta.get_field('name'), new_field)
# Ensure the foreign key reference was updated.
self.assertForeignKeyExists(Book, 'author_id', 'schema_author', 'renamed')
@skipIfDBFeature('interprets_empty_strings_as_nulls')
def test_rename_keep_null_status(self):
"""
Renaming a field shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
old_field = Note._meta.get_field("info")
new_field = TextField()
new_field.set_attributes_from_name("detail_info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(columns['detail_info'][0], "TextField")
self.assertNotIn("info", columns)
with self.assertRaises(IntegrityError):
NoteRename.objects.create(detail_info=None)
def _test_m2m_create(self, M2MFieldClass):
"""
Tests M2M fields on models during creation
"""
class LocalBookWithM2M(Model):
author = ForeignKey(Author, CASCADE)
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
tags = M2MFieldClass("TagM2MTest", related_name="books")
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBookWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(TagM2MTest)
editor.create_model(LocalBookWithM2M)
# Ensure there is now an m2m table there
columns = self.column_classes(LocalBookWithM2M._meta.get_field("tags").remote_field.through)
self.assertEqual(columns['tagm2mtest_id'][0], connection.features.introspected_field_types['IntegerField'])
def test_m2m_create(self):
self._test_m2m_create(ManyToManyField)
def test_m2m_create_custom(self):
self._test_m2m_create(CustomManyToManyField)
def test_m2m_create_inherited(self):
self._test_m2m_create(InheritedManyToManyField)
def _test_m2m_create_through(self, M2MFieldClass):
"""
Tests M2M fields on models during creation with through models
"""
class LocalTagThrough(Model):
book = ForeignKey("schema.LocalBookWithM2MThrough", CASCADE)
tag = ForeignKey("schema.TagM2MTest", CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
class LocalBookWithM2MThrough(Model):
tags = M2MFieldClass("TagM2MTest", related_name="books", through=LocalTagThrough)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalTagThrough, LocalBookWithM2MThrough]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalTagThrough)
editor.create_model(TagM2MTest)
editor.create_model(LocalBookWithM2MThrough)
# Ensure there is now an m2m table there
columns = self.column_classes(LocalTagThrough)
self.assertEqual(columns['book_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertEqual(columns['tag_id'][0], connection.features.introspected_field_types['IntegerField'])
def test_m2m_create_through(self):
self._test_m2m_create_through(ManyToManyField)
def test_m2m_create_through_custom(self):
self._test_m2m_create_through(CustomManyToManyField)
def test_m2m_create_through_inherited(self):
self._test_m2m_create_through(InheritedManyToManyField)
def _test_m2m(self, M2MFieldClass):
"""
Tests adding/removing M2M fields on models
"""
class LocalAuthorWithM2M(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalAuthorWithM2M)
editor.create_model(TagM2MTest)
# Create an M2M field
new_field = M2MFieldClass("schema.TagM2MTest", related_name="authors")
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
# Ensure there's no m2m table there
with self.assertRaises(DatabaseError):
self.column_classes(new_field.remote_field.through)
# Add the field
with connection.schema_editor() as editor:
editor.add_field(LocalAuthorWithM2M, new_field)
# Ensure there is now an m2m table there
columns = self.column_classes(new_field.remote_field.through)
self.assertEqual(columns['tagm2mtest_id'][0], connection.features.introspected_field_types['IntegerField'])
# "Alter" the field. This should not rename the DB table to itself.
with connection.schema_editor() as editor:
editor.alter_field(LocalAuthorWithM2M, new_field, new_field, strict=True)
# Remove the M2M table again
with connection.schema_editor() as editor:
editor.remove_field(LocalAuthorWithM2M, new_field)
# Ensure there's no m2m table there
with self.assertRaises(DatabaseError):
self.column_classes(new_field.remote_field.through)
# Make sure the model state is coherent with the table one now that
# we've removed the tags field.
opts = LocalAuthorWithM2M._meta
opts.local_many_to_many.remove(new_field)
del new_apps.all_models['schema'][new_field.remote_field.through._meta.model_name]
opts._expire_cache()
def test_m2m(self):
self._test_m2m(ManyToManyField)
def test_m2m_custom(self):
self._test_m2m(CustomManyToManyField)
def test_m2m_inherited(self):
self._test_m2m(InheritedManyToManyField)
def _test_m2m_through_alter(self, M2MFieldClass):
"""
Tests altering M2Ms with explicit through models (should no-op)
"""
class LocalAuthorTag(Model):
author = ForeignKey("schema.LocalAuthorWithM2MThrough", CASCADE)
tag = ForeignKey("schema.TagM2MTest", CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
class LocalAuthorWithM2MThrough(Model):
name = CharField(max_length=255)
tags = M2MFieldClass("schema.TagM2MTest", related_name="authors", through=LocalAuthorTag)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorTag, LocalAuthorWithM2MThrough]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalAuthorTag)
editor.create_model(LocalAuthorWithM2MThrough)
editor.create_model(TagM2MTest)
# Ensure the m2m table is there
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
# "Alter" the field's blankness. This should not actually do anything.
old_field = LocalAuthorWithM2MThrough._meta.get_field("tags")
new_field = M2MFieldClass("schema.TagM2MTest", related_name="authors", through=LocalAuthorTag)
new_field.contribute_to_class(LocalAuthorWithM2MThrough, "tags")
with connection.schema_editor() as editor:
editor.alter_field(LocalAuthorWithM2MThrough, old_field, new_field, strict=True)
# Ensure the m2m table is still there
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
def test_m2m_through_alter(self):
self._test_m2m_through_alter(ManyToManyField)
def test_m2m_through_alter_custom(self):
self._test_m2m_through_alter(CustomManyToManyField)
def test_m2m_through_alter_inherited(self):
self._test_m2m_through_alter(InheritedManyToManyField)
def _test_m2m_repoint(self, M2MFieldClass):
"""
Tests repointing M2M fields
"""
class LocalBookWithM2M(Model):
author = ForeignKey(Author, CASCADE)
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
tags = M2MFieldClass("TagM2MTest", related_name="books")
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBookWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(LocalBookWithM2M)
editor.create_model(TagM2MTest)
editor.create_model(UniqueTest)
# Ensure the M2M exists and points to TagM2MTest
if connection.features.supports_foreign_keys:
self.assertForeignKeyExists(
LocalBookWithM2M._meta.get_field("tags").remote_field.through,
'tagm2mtest_id',
'schema_tagm2mtest',
)
# Repoint the M2M
old_field = LocalBookWithM2M._meta.get_field("tags")
new_field = M2MFieldClass(UniqueTest)
new_field.contribute_to_class(LocalBookWithM2M, "uniques")
with connection.schema_editor() as editor:
editor.alter_field(LocalBookWithM2M, old_field, new_field, strict=True)
# Ensure old M2M is gone
with self.assertRaises(DatabaseError):
self.column_classes(LocalBookWithM2M._meta.get_field("tags").remote_field.through)
# This model looks like the new model and is used for teardown.
opts = LocalBookWithM2M._meta
opts.local_many_to_many.remove(old_field)
# Ensure the new M2M exists and points to UniqueTest
if connection.features.supports_foreign_keys:
self.assertForeignKeyExists(new_field.remote_field.through, 'uniquetest_id', 'schema_uniquetest')
def test_m2m_repoint(self):
self._test_m2m_repoint(ManyToManyField)
def test_m2m_repoint_custom(self):
self._test_m2m_repoint(CustomManyToManyField)
def test_m2m_repoint_inherited(self):
self._test_m2m_repoint(InheritedManyToManyField)
@isolate_apps('schema')
def test_m2m_rename_field_in_target_model(self):
class LocalTagM2MTest(Model):
title = CharField(max_length=255)
class Meta:
app_label = 'schema'
class LocalM2M(Model):
tags = ManyToManyField(LocalTagM2MTest)
class Meta:
app_label = 'schema'
# Create the tables.
with connection.schema_editor() as editor:
editor.create_model(LocalM2M)
editor.create_model(LocalTagM2MTest)
self.isolated_local_models = [LocalM2M, LocalTagM2MTest]
# Ensure the m2m table is there.
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
# Alter a field in LocalTagM2MTest.
old_field = LocalTagM2MTest._meta.get_field('title')
new_field = CharField(max_length=254)
new_field.contribute_to_class(LocalTagM2MTest, 'title1')
# @isolate_apps() and inner models are needed to have the model
# relations populated, otherwise this doesn't act as a regression test.
self.assertEqual(len(new_field.model._meta.related_objects), 1)
with connection.schema_editor() as editor:
editor.alter_field(LocalTagM2MTest, old_field, new_field, strict=True)
# Ensure the m2m table is still there.
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
@skipUnlessDBFeature('supports_column_check_constraints', 'can_introspect_check_constraints')
def test_check_constraints(self):
"""
Tests creating/deleting CHECK constraints
"""
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the constraint exists
constraints = self.get_constraints(Author._meta.db_table)
if not any(details['columns'] == ['height'] and details['check'] for details in constraints.values()):
self.fail("No check constraint for height found")
# Alter the column to remove it
old_field = Author._meta.get_field("height")
new_field = IntegerField(null=True, blank=True)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
for details in constraints.values():
if details['columns'] == ["height"] and details['check']:
self.fail("Check constraint for height found")
# Alter the column to re-add it
new_field2 = Author._meta.get_field("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
if not any(details['columns'] == ['height'] and details['check'] for details in constraints.values()):
self.fail("No check constraint for height found")
@skipUnlessDBFeature('supports_column_check_constraints', 'can_introspect_check_constraints')
def test_remove_field_check_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the custom check constraint
constraint = CheckConstraint(check=Q(height__gte=0), name='author_height_gte_0_check')
custom_constraint_name = constraint.name
Author._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Alter the column to remove field check
old_field = Author._meta.get_field('height')
new_field = IntegerField(null=True, blank=True)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Alter the column to re-add field check
new_field2 = Author._meta.get_field('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the check constraint
with connection.schema_editor() as editor:
Author._meta.constraints = []
editor.remove_constraint(Author, constraint)
def test_unique(self):
"""
Tests removing and adding unique constraints to a single column.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure the field is unique to begin with
Tag.objects.create(title="foo", slug="foo")
with self.assertRaises(IntegrityError):
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Alter the slug field to be non-unique
old_field = Tag._meta.get_field("slug")
new_field = SlugField(unique=False)
new_field.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(Tag, old_field, new_field, strict=True)
# Ensure the field is no longer unique
Tag.objects.create(title="foo", slug="foo")
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Alter the slug field to be unique
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field, new_field2, strict=True)
# Ensure the field is unique again
Tag.objects.create(title="foo", slug="foo")
with self.assertRaises(IntegrityError):
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Rename the field
new_field3 = SlugField(unique=True)
new_field3.set_attributes_from_name("slug2")
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field2, new_field3, strict=True)
# Ensure the field is still unique
TagUniqueRename.objects.create(title="foo", slug2="foo")
with self.assertRaises(IntegrityError):
TagUniqueRename.objects.create(title="bar", slug2="foo")
Tag.objects.all().delete()
def test_unique_name_quoting(self):
old_table_name = TagUniqueRename._meta.db_table
try:
with connection.schema_editor() as editor:
editor.create_model(TagUniqueRename)
editor.alter_db_table(TagUniqueRename, old_table_name, 'unique-table')
TagUniqueRename._meta.db_table = 'unique-table'
# This fails if the unique index name isn't quoted.
editor.alter_unique_together(TagUniqueRename, [], (('title', 'slug2'),))
finally:
TagUniqueRename._meta.db_table = old_table_name
@isolate_apps('schema')
@skipUnlessDBFeature('supports_foreign_keys')
def test_unique_no_unnecessary_fk_drops(self):
"""
If AlterField isn't selective about dropping foreign key constraints
when modifying a field with a unique constraint, the AlterField
incorrectly drops and recreates the Book.author foreign key even though
it doesn't restrict the field being changed (#29193).
"""
class Author(Model):
name = CharField(max_length=254, unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
new_field = CharField(max_length=255, unique=True)
new_field.model = Author
new_field.set_attributes_from_name('name')
with self.assertLogs('django.db.backends.schema', 'DEBUG') as cm:
with connection.schema_editor() as editor:
editor.alter_field(Author, Author._meta.get_field('name'), new_field)
# One SQL statement is executed to alter the field.
self.assertEqual(len(cm.records), 1)
@isolate_apps('schema')
def test_unique_and_reverse_m2m(self):
"""
AlterField can modify a unique field when there's a reverse M2M
relation on the model.
"""
class Tag(Model):
title = CharField(max_length=255)
slug = SlugField(unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
tags = ManyToManyField(Tag, related_name='books')
class Meta:
app_label = 'schema'
self.isolated_local_models = [Book._meta.get_field('tags').remote_field.through]
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(Book)
new_field = SlugField(max_length=75, unique=True)
new_field.model = Tag
new_field.set_attributes_from_name('slug')
with self.assertLogs('django.db.backends.schema', 'DEBUG') as cm:
with connection.schema_editor() as editor:
editor.alter_field(Tag, Tag._meta.get_field('slug'), new_field)
# One SQL statement is executed to alter the field.
self.assertEqual(len(cm.records), 1)
# Ensure that the field is still unique.
Tag.objects.create(title='foo', slug='foo')
with self.assertRaises(IntegrityError):
Tag.objects.create(title='bar', slug='foo')
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_field_unique_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithUniqueName)
# Add the custom unique constraint
constraint = UniqueConstraint(fields=['name'], name='author_name_uniq')
custom_constraint_name = constraint.name
AuthorWithUniqueName._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(AuthorWithUniqueName, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Alter the column to remove field uniqueness
old_field = AuthorWithUniqueName._meta.get_field('name')
new_field = CharField(max_length=255)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithUniqueName, old_field, new_field, strict=True)
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Alter the column to re-add field uniqueness
new_field2 = AuthorWithUniqueName._meta.get_field('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithUniqueName, new_field, new_field2, strict=True)
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the unique constraint
with connection.schema_editor() as editor:
AuthorWithUniqueName._meta.constraints = []
editor.remove_constraint(AuthorWithUniqueName, constraint)
def test_unique_together(self):
"""
Tests removing and adding unique_together constraints on a model.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(UniqueTest)
# Ensure the fields are unique to begin with
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.create(year=2011, slug="foo")
UniqueTest.objects.create(year=2011, slug="bar")
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
# Alter the model to its non-unique-together companion
with connection.schema_editor() as editor:
editor.alter_unique_together(UniqueTest, UniqueTest._meta.unique_together, [])
# Ensure the fields are no longer unique
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
# Alter it back
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_unique_together(UniqueTest, [], UniqueTest._meta.unique_together)
# Ensure the fields are unique again
UniqueTest.objects.create(year=2012, slug="foo")
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
def test_unique_together_with_fk(self):
"""
Tests removing and adding unique_together constraints that include
a foreign key.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the fields are unique to begin with
self.assertEqual(Book._meta.unique_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [['author', 'title']], [])
def test_unique_together_with_fk_with_existing_index(self):
"""
Tests removing and adding unique_together constraints that include
a foreign key, where the foreign key is added after the model is
created.
"""
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithoutAuthor)
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name('author')
editor.add_field(BookWithoutAuthor, new_field)
# Ensure the fields aren't unique to begin with
self.assertEqual(Book._meta.unique_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [['author', 'title']], [])
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_unique_together_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithUniqueNameAndBirthday)
# Add the custom unique constraint
constraint = UniqueConstraint(fields=['name', 'birthday'], name='author_name_birthday_uniq')
custom_constraint_name = constraint.name
AuthorWithUniqueNameAndBirthday._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(AuthorWithUniqueNameAndBirthday, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Remove unique together
unique_together = AuthorWithUniqueNameAndBirthday._meta.unique_together
with connection.schema_editor() as editor:
editor.alter_unique_together(AuthorWithUniqueNameAndBirthday, unique_together, [])
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Re-add unique together
with connection.schema_editor() as editor:
editor.alter_unique_together(AuthorWithUniqueNameAndBirthday, [], unique_together)
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the unique constraint
with connection.schema_editor() as editor:
AuthorWithUniqueNameAndBirthday._meta.constraints = []
editor.remove_constraint(AuthorWithUniqueNameAndBirthday, constraint)
def test_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(fields=['name'], name='name_uq')
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIs(sql.references_table(table), True)
self.assertIs(sql.references_column(table, 'name'), True)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(Upper('name').desc(), name='func_upper_uq')
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC'])
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains a database function.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
constraint = UniqueConstraint(
Upper('title'),
Lower('slug'),
name='func_upper_lower_unq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(BookWithSlug, constraint)
sql = constraint.create_sql(BookWithSlug, editor)
table = BookWithSlug._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains database functions.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
sql = str(sql)
self.assertIn('UPPER(%s)' % editor.quote_name('title'), sql)
self.assertIn('LOWER(%s)' % editor.quote_name('slug'), sql)
self.assertLess(sql.index('UPPER'), sql.index('LOWER'))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(BookWithSlug, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_unique_constraint_field_and_expression(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
F('height').desc(),
'uuid',
Lower('name').asc(),
name='func_f_lower_field_unq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC', 'ASC', 'ASC'])
constraints = self.get_constraints(table)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertEqual(len(constraints[constraint.name]['columns']), 3)
self.assertEqual(constraints[constraint.name]['columns'][1], 'uuid')
# SQL contains database functions and columns.
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'uuid'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_partial_indexes')
def test_func_unique_constraint_partial(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
Upper('name'),
name='func_upper_cond_weight_uq',
condition=Q(weight__isnull=False),
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
self.assertIn(
'WHERE %s IS NOT NULL' % editor.quote_name('weight'),
str(sql),
)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_covering_indexes')
def test_func_unique_constraint_covering(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
Upper('name'),
name='func_upper_covering_uq',
include=['weight', 'height'],
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertEqual(
constraints[constraint.name]['columns'],
[None, 'weight', 'height'],
)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
self.assertIn(
'INCLUDE (%s, %s)' % (
editor.quote_name('weight'),
editor.quote_name('height'),
),
str(sql),
)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_lookups(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
constraint = UniqueConstraint(
F('name__lower'),
F('weight__abs'),
name='func_lower_abs_lookup_uq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains columns.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_collate(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
constraint = UniqueConstraint(
Collate(F('title'), collation=collation).desc(),
Collate('slug', collation=collation),
name='func_collate_uq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(BookWithSlug, constraint)
sql = constraint.create_sql(BookWithSlug, editor)
table = BookWithSlug._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC', 'ASC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(BookWithSlug, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipIfDBFeature('supports_expression_indexes')
def test_func_unique_constraint_unsupported(self):
# UniqueConstraint is ignored on databases that don't support indexes on
# expressions.
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(F('name'), name='func_name_uq')
with connection.schema_editor() as editor, self.assertNumQueries(0):
self.assertIsNone(editor.add_constraint(Author, constraint))
self.assertIsNone(editor.remove_constraint(Author, constraint))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_nonexistent_field(self):
constraint = UniqueConstraint(Lower('nonexistent'), name='func_nonexistent_uq')
msg = (
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
"height, id, name, uuid, weight"
)
with self.assertRaisesMessage(FieldError, msg):
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_nondeterministic(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(Random(), name='func_random_uq')
with connection.schema_editor() as editor:
with self.assertRaises(DatabaseError):
editor.add_constraint(Author, constraint)
def test_index_together(self):
"""
Tests removing and adding index_together constraints on a model.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure there's no index on the year/slug columns first
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
False,
)
# Alter the model to add an index
with connection.schema_editor() as editor:
editor.alter_index_together(Tag, [], [("slug", "title")])
# Ensure there is now an index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
True,
)
# Alter it back
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_index_together(Tag, [("slug", "title")], [])
# Ensure there's no index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
False,
)
def test_index_together_with_fk(self):
"""
Tests removing and adding index_together constraints that include
a foreign key.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the fields are unique to begin with
self.assertEqual(Book._meta.index_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_index_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_index_together(Book, [['author', 'title']], [])
def test_create_index_together(self):
"""
Tests creating models with index_together already defined
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(TagIndexed)
# Ensure there is an index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tagindexed").values()
if c['columns'] == ["slug", "title"]
),
True,
)
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_index_together_does_not_remove_meta_indexes(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithIndexedNameAndBirthday)
# Add the custom index
index = Index(fields=['name', 'birthday'], name='author_name_birthday_idx')
custom_index_name = index.name
AuthorWithIndexedNameAndBirthday._meta.indexes = [index]
with connection.schema_editor() as editor:
editor.add_index(AuthorWithIndexedNameAndBirthday, index)
# Ensure the indexes exist
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 1)
# Remove index together
index_together = AuthorWithIndexedNameAndBirthday._meta.index_together
with connection.schema_editor() as editor:
editor.alter_index_together(AuthorWithIndexedNameAndBirthday, index_together, [])
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 0)
# Re-add index together
with connection.schema_editor() as editor:
editor.alter_index_together(AuthorWithIndexedNameAndBirthday, [], index_together)
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the index
with connection.schema_editor() as editor:
AuthorWithIndexedNameAndBirthday._meta.indexes = []
editor.remove_index(AuthorWithIndexedNameAndBirthday, index)
@isolate_apps('schema')
def test_db_table(self):
"""
Tests renaming of the table
"""
class Author(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
# Create the table and one referring it.
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the table is there to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
# Alter the table
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_db_table(Author, "schema_author", "schema_otherauthor")
Author._meta.db_table = "schema_otherauthor"
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
# Ensure the foreign key reference was updated
self.assertForeignKeyExists(Book, "author_id", "schema_otherauthor")
# Alter the table again
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_db_table(Author, "schema_otherauthor", "schema_author")
# Ensure the table is still there
Author._meta.db_table = "schema_author"
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
def test_add_remove_index(self):
"""
Tests index addition and removal
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the table is there and has no index
self.assertNotIn('title', self.get_indexes(Author._meta.db_table))
# Add the index
index = Index(fields=['name'], name='author_title_idx')
with connection.schema_editor() as editor:
editor.add_index(Author, index)
self.assertIn('name', self.get_indexes(Author._meta.db_table))
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn('name', self.get_indexes(Author._meta.db_table))
def test_remove_db_index_doesnt_remove_custom_indexes(self):
"""
Changing db_index to False doesn't remove indexes from Meta.indexes.
"""
with connection.schema_editor() as editor:
editor.create_model(AuthorWithIndexedName)
# Ensure the table has its index
self.assertIn('name', self.get_indexes(AuthorWithIndexedName._meta.db_table))
# Add the custom index
index = Index(fields=['-name'], name='author_name_idx')
author_index_name = index.name
with connection.schema_editor() as editor:
db_index_name = editor._create_index_name(
table_name=AuthorWithIndexedName._meta.db_table,
column_names=('name',),
)
try:
AuthorWithIndexedName._meta.indexes = [index]
with connection.schema_editor() as editor:
editor.add_index(AuthorWithIndexedName, index)
old_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
self.assertIn(author_index_name, old_constraints)
self.assertIn(db_index_name, old_constraints)
# Change name field to db_index=False
old_field = AuthorWithIndexedName._meta.get_field('name')
new_field = CharField(max_length=255)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithIndexedName, old_field, new_field, strict=True)
new_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
self.assertNotIn(db_index_name, new_constraints)
# The index from Meta.indexes is still in the database.
self.assertIn(author_index_name, new_constraints)
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(AuthorWithIndexedName, index)
finally:
AuthorWithIndexedName._meta.indexes = []
def test_order_index(self):
"""
Indexes defined with ordering (ASC/DESC) defined on column
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
# The table doesn't have an index
self.assertNotIn('title', self.get_indexes(Author._meta.db_table))
index_name = 'author_name_idx'
# Add the index
index = Index(fields=['name', '-weight'], name=index_name)
with connection.schema_editor() as editor:
editor.add_index(Author, index)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(Author._meta.db_table, index_name, ['ASC', 'DESC'])
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
def test_indexes(self):
"""
Tests creation/altering of indexes
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the table is there and has the right index
self.assertIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Alter to remove the index
old_field = Book._meta.get_field("title")
new_field = CharField(max_length=100, db_index=False)
new_field.set_attributes_from_name("title")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
# Ensure the table is there and has no index
self.assertNotIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Alter to re-add the index
new_field2 = Book._meta.get_field("title")
with connection.schema_editor() as editor:
editor.alter_field(Book, new_field, new_field2, strict=True)
# Ensure the table is there and has the index again
self.assertIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Add a unique column, verify that creates an implicit index
new_field3 = BookWithSlug._meta.get_field("slug")
with connection.schema_editor() as editor:
editor.add_field(Book, new_field3)
self.assertIn(
"slug",
self.get_uniques(Book._meta.db_table),
)
# Remove the unique, check the index goes with it
new_field4 = CharField(max_length=20, unique=False)
new_field4.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(BookWithSlug, new_field3, new_field4, strict=True)
self.assertNotIn(
"slug",
self.get_uniques(Book._meta.db_table),
)
def test_text_field_with_db_index(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorTextFieldWithIndex)
# The text_field index is present if the database supports it.
assertion = self.assertIn if connection.features.supports_index_on_text_field else self.assertNotIn
assertion('text_field', self.get_indexes(AuthorTextFieldWithIndex._meta.db_table))
def _index_expressions_wrappers(self):
index_expression = IndexExpression()
index_expression.set_wrapper_classes(connection)
return ', '.join([
wrapper_cls.__qualname__ for wrapper_cls in index_expression.wrapper_classes
])
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_multiple_wrapper_references(self):
index = Index(OrderBy(F('name').desc(), descending=True), name='name')
msg = (
"Multiple references to %s can't be used in an indexed expression."
% self._index_expressions_wrappers()
)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, msg):
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_invalid_topmost_expressions(self):
index = Index(Upper(F('name').desc()), name='name')
msg = (
'%s must be topmost expressions in an indexed expression.'
% self._index_expressions_wrappers()
)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, msg):
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Lower('name').desc(), name='func_lower_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC'])
# SQL contains a database function.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_f(self):
with connection.schema_editor() as editor:
editor.create_model(Tag)
index = Index('slug', F('title').desc(), name='func_f_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Tag, index)
sql = index.create_sql(Tag, editor)
table = Tag._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(Tag._meta.db_table, index.name, ['ASC', 'DESC'])
# SQL contains columns.
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIs(sql.references_column(table, 'title'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Tag, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_lookups(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
index = Index(
F('name__lower'),
F('weight__abs'),
name='func_lower_abs_lookup_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains columns.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Lower('name'), Upper('name'), name='func_lower_upper_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains database functions.
self.assertIs(sql.references_column(table, 'name'), True)
sql = str(sql)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), sql)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), sql)
self.assertLess(sql.index('LOWER'), sql.index('UPPER'))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_index_field_and_expression(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
index = Index(
F('author').desc(),
Lower('title').asc(),
'pub_date',
name='func_f_lower_field_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Book, index)
sql = index.create_sql(Book, editor)
table = Book._meta.db_table
constraints = self.get_constraints(table)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC', 'ASC', 'ASC'])
self.assertEqual(len(constraints[index.name]['columns']), 3)
self.assertEqual(constraints[index.name]['columns'][2], 'pub_date')
# SQL contains database functions and columns.
self.assertIs(sql.references_column(table, 'author_id'), True)
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'pub_date'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('title'), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Book, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
@isolate_apps('schema')
def test_func_index_f_decimalfield(self):
class Node(Model):
value = DecimalField(max_digits=5, decimal_places=2)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Node)
index = Index(F('value'), name='func_f_decimalfield_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Node, index)
sql = index.create_sql(Node, editor)
table = Node._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'value'), True)
# SQL doesn't contain casting.
self.assertNotIn('CAST', str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Node, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_cast(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Cast('weight', FloatField()), name='func_cast_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_collate(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
index = Index(
Collate(F('title'), collation=collation).desc(),
Collate('slug', collation=collation),
name='func_collate_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(BookWithSlug, index)
sql = index.create_sql(BookWithSlug, editor)
table = Book._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC', 'ASC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Book, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
@skipIfDBFeature('collate_as_index_expression')
def test_func_index_collate_f_ordered(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(
Collate(F('name').desc(), collation=collation),
name='func_collate_f_desc_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_calc(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(F('height') / (F('weight') + Value(5)), name='func_calc_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains columns and expressions.
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
sql = str(sql)
self.assertIs(
sql.index(editor.quote_name('height')) <
sql.index('/') <
sql.index(editor.quote_name('weight')) <
sql.index('+') <
sql.index('5'),
True,
)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_json_field')
@isolate_apps('schema')
def test_func_index_json_key_transform(self):
class JSONModel(Model):
field = JSONField()
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(JSONModel)
self.isolated_local_models = [JSONModel]
index = Index('field__some_key', name='func_json_key_idx')
with connection.schema_editor() as editor:
editor.add_index(JSONModel, index)
sql = index.create_sql(JSONModel, editor)
table = JSONModel._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'field'), True)
with connection.schema_editor() as editor:
editor.remove_index(JSONModel, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_json_field')
@isolate_apps('schema')
def test_func_index_json_key_transform_cast(self):
class JSONModel(Model):
field = JSONField()
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(JSONModel)
self.isolated_local_models = [JSONModel]
index = Index(
Cast(KeyTextTransform('some_key', 'field'), IntegerField()),
name='func_json_key_cast_idx',
)
with connection.schema_editor() as editor:
editor.add_index(JSONModel, index)
sql = index.create_sql(JSONModel, editor)
table = JSONModel._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'field'), True)
with connection.schema_editor() as editor:
editor.remove_index(JSONModel, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipIfDBFeature('supports_expression_indexes')
def test_func_index_unsupported(self):
# Index is ignored on databases that don't support indexes on
# expressions.
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(F('name'), name='random_idx')
with connection.schema_editor() as editor, self.assertNumQueries(0):
self.assertIsNone(editor.add_index(Author, index))
self.assertIsNone(editor.remove_index(Author, index))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_nonexistent_field(self):
index = Index(Lower('nonexistent'), name='func_nonexistent_idx')
msg = (
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
"height, id, name, uuid, weight"
)
with self.assertRaisesMessage(FieldError, msg):
with connection.schema_editor() as editor:
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_nondeterministic(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Random(), name='func_random_idx')
with connection.schema_editor() as editor:
with self.assertRaises(DatabaseError):
editor.add_index(Author, index)
def test_primary_key(self):
"""
Tests altering of the primary key
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure the table is there and has the right PK
self.assertEqual(self.get_primary_key(Tag._meta.db_table), 'id')
# Alter to change the PK
id_field = Tag._meta.get_field("id")
old_field = Tag._meta.get_field("slug")
new_field = SlugField(primary_key=True)
new_field.set_attributes_from_name("slug")
new_field.model = Tag
with connection.schema_editor() as editor:
editor.remove_field(Tag, id_field)
editor.alter_field(Tag, old_field, new_field)
# Ensure the PK changed
self.assertNotIn(
'id',
self.get_indexes(Tag._meta.db_table),
)
self.assertEqual(self.get_primary_key(Tag._meta.db_table), 'slug')
def test_context_manager_exit(self):
"""
Ensures transaction is correctly closed when an error occurs
inside a SchemaEditor context.
"""
class SomeError(Exception):
pass
try:
with connection.schema_editor():
raise SomeError
except SomeError:
self.assertFalse(connection.in_atomic_block)
@skipIfDBFeature('can_rollback_ddl')
def test_unsupported_transactional_ddl_disallowed(self):
message = (
"Executing DDL statements while in a transaction on databases "
"that can't perform a rollback is prohibited."
)
with atomic(), connection.schema_editor() as editor:
with self.assertRaisesMessage(TransactionManagementError, message):
editor.execute(editor.sql_create_table % {'table': 'foo', 'definition': ''})
@skipUnlessDBFeature('supports_foreign_keys', 'indexes_foreign_keys')
def test_foreign_key_index_long_names_regression(self):
"""
Regression test for #21497.
Only affects databases that supports foreign keys.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(AuthorWithEvenLongerName)
editor.create_model(BookWithLongName)
# Find the properly shortened column name
column_name = connection.ops.quote_name("author_foreign_key_with_really_long_field_name_id")
column_name = column_name[1:-1].lower() # unquote, and, for Oracle, un-upcase
# Ensure the table is there and has an index on the column
self.assertIn(
column_name,
self.get_indexes(BookWithLongName._meta.db_table),
)
@skipUnlessDBFeature('supports_foreign_keys')
def test_add_foreign_key_long_names(self):
"""
Regression test for #23009.
Only affects databases that supports foreign keys.
"""
# Create the initial tables
with connection.schema_editor() as editor:
editor.create_model(AuthorWithEvenLongerName)
editor.create_model(BookWithLongName)
# Add a second FK, this would fail due to long ref name before the fix
new_field = ForeignKey(AuthorWithEvenLongerName, CASCADE, related_name="something")
new_field.set_attributes_from_name("author_other_really_long_named_i_mean_so_long_fk")
with connection.schema_editor() as editor:
editor.add_field(BookWithLongName, new_field)
@isolate_apps('schema')
@skipUnlessDBFeature('supports_foreign_keys')
def test_add_foreign_key_quoted_db_table(self):
class Author(Model):
class Meta:
db_table = '"table_author_double_quoted"'
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
if connection.vendor == 'mysql':
self.assertForeignKeyExists(Book, 'author_id', '"table_author_double_quoted"')
else:
self.assertForeignKeyExists(Book, 'author_id', 'table_author_double_quoted')
def test_add_foreign_object(self):
with connection.schema_editor() as editor:
editor.create_model(BookForeignObj)
new_field = ForeignObject(Author, on_delete=CASCADE, from_fields=['author_id'], to_fields=['id'])
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.add_field(BookForeignObj, new_field)
def test_creation_deletion_reserved_names(self):
"""
Tries creating a model's table, and then deleting it when it has a
SQL reserved name.
"""
# Create the table
with connection.schema_editor() as editor:
try:
editor.create_model(Thing)
except OperationalError as e:
self.fail("Errors when applying initial migration for a model "
"with a table named after an SQL reserved word: %s" % e)
# The table is there
list(Thing.objects.all())
# Clean up that table
with connection.schema_editor() as editor:
editor.delete_model(Thing)
# The table is gone
with self.assertRaises(DatabaseError):
list(Thing.objects.all())
def test_remove_constraints_capital_letters(self):
"""
#23065 - Constraint names must be quoted if they contain capital letters.
"""
def get_field(*args, field_class=IntegerField, **kwargs):
kwargs['db_column'] = "CamelCase"
field = field_class(*args, **kwargs)
field.set_attributes_from_name("CamelCase")
return field
model = Author
field = get_field()
table = model._meta.db_table
column = field.column
identifier_converter = connection.introspection.identifier_converter
with connection.schema_editor() as editor:
editor.create_model(model)
editor.add_field(model, field)
constraint_name = 'CamelCaseIndex'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(
editor.sql_create_index % {
"table": editor.quote_name(table),
"name": editor.quote_name(constraint_name),
"using": "",
"columns": editor.quote_name(column),
"extra": "",
"condition": "",
"include": "",
}
)
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(db_index=True), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
constraint_name = 'CamelCaseUniqConstraint'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(editor._create_unique_sql(model, [field], constraint_name))
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(unique=True), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
if editor.sql_create_fk:
constraint_name = 'CamelCaseFKConstraint'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(
editor.sql_create_fk % {
"table": editor.quote_name(table),
"name": editor.quote_name(constraint_name),
"column": editor.quote_name(column),
"to_table": editor.quote_name(table),
"to_column": editor.quote_name(model._meta.auto_field.column),
"deferrable": connection.ops.deferrable_sql(),
}
)
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(Author, CASCADE, field_class=ForeignKey), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
def test_add_field_use_effective_default(self):
"""
#23987 - effective_default() should be used as the field default when
adding a new field.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no surname field
columns = self.column_classes(Author)
self.assertNotIn("surname", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Add new CharField to ensure default will be used from effective_default
new_field = CharField(max_length=15, blank=True)
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure field was added with the right default
with connection.cursor() as cursor:
cursor.execute("SELECT surname FROM schema_author;")
item = cursor.fetchall()[0]
self.assertEqual(item[0], None if connection.features.interprets_empty_strings_as_nulls else '')
def test_add_field_default_dropped(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no surname field
columns = self.column_classes(Author)
self.assertNotIn("surname", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Add new CharField with a default
new_field = CharField(max_length=15, blank=True, default='surname default')
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure field was added with the right default
with connection.cursor() as cursor:
cursor.execute("SELECT surname FROM schema_author;")
item = cursor.fetchall()[0]
self.assertEqual(item[0], 'surname default')
# And that the default is no longer set in the database.
field = next(
f for f in connection.introspection.get_table_description(cursor, "schema_author")
if f.name == "surname"
)
if connection.features.can_introspect_default:
self.assertIsNone(field.default)
def test_add_field_default_nullable(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add new nullable CharField with a default.
new_field = CharField(max_length=15, blank=True, null=True, default='surname')
new_field.set_attributes_from_name('surname')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
Author.objects.create(name='Anonymous1')
with connection.cursor() as cursor:
cursor.execute('SELECT surname FROM schema_author;')
item = cursor.fetchall()[0]
self.assertIsNone(item[0])
field = next(
f
for f in connection.introspection.get_table_description(
cursor,
'schema_author',
)
if f.name == 'surname'
)
# Field is still nullable.
self.assertTrue(field.null_ok)
# The database default is no longer set.
if connection.features.can_introspect_default:
self.assertIn(field.default, ['NULL', None])
def test_add_textfield_default_nullable(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add new nullable TextField with a default.
new_field = TextField(blank=True, null=True, default='text')
new_field.set_attributes_from_name('description')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
Author.objects.create(name='Anonymous1')
with connection.cursor() as cursor:
cursor.execute('SELECT description FROM schema_author;')
item = cursor.fetchall()[0]
self.assertIsNone(item[0])
field = next(
f
for f in connection.introspection.get_table_description(
cursor,
'schema_author',
)
if f.name == 'description'
)
# Field is still nullable.
self.assertTrue(field.null_ok)
# The database default is no longer set.
if connection.features.can_introspect_default:
self.assertIn(field.default, ['NULL', None])
def test_alter_field_default_dropped(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Create a row
Author.objects.create(name='Anonymous1')
self.assertIsNone(Author.objects.get().height)
old_field = Author._meta.get_field('height')
# The default from the new field is used in updating existing rows.
new_field = IntegerField(blank=True, default=42)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(Author.objects.get().height, 42)
# The database default should be removed.
with connection.cursor() as cursor:
field = next(
f for f in connection.introspection.get_table_description(cursor, "schema_author")
if f.name == "height"
)
if connection.features.can_introspect_default:
self.assertIsNone(field.default)
def test_alter_field_default_doesnt_perform_queries(self):
"""
No queries are performed if a field default changes and the field's
not changing from null to non-null.
"""
with connection.schema_editor() as editor:
editor.create_model(AuthorWithDefaultHeight)
old_field = AuthorWithDefaultHeight._meta.get_field('height')
new_default = old_field.default * 2
new_field = PositiveIntegerField(null=True, blank=True, default=new_default)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(AuthorWithDefaultHeight, old_field, new_field, strict=True)
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_field_fk_attributes_noop(self):
"""
No queries are performed when changing field attributes that don't
affect the schema.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
old_field = Book._meta.get_field('author')
new_field = ForeignKey(
Author,
blank=True,
editable=False,
error_messages={'invalid': 'error message'},
help_text='help text',
limit_choices_to={'limit': 'choice'},
on_delete=PROTECT,
related_name='related_name',
related_query_name='related_query_name',
validators=[lambda x: x],
verbose_name='verbose name',
)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(Book, old_field, new_field, strict=True)
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(Book, new_field, old_field, strict=True)
def test_add_textfield_unhashable_default(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Create a row
Author.objects.create(name='Anonymous1')
# Create a field that has an unhashable default
new_field = TextField(default={})
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_add_indexed_charfield(self):
field = CharField(max_length=255, db_index=True)
field.set_attributes_from_name('nom_de_plume')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.add_field(Author, field)
# Should create two indexes; one for like operator.
self.assertEqual(
self.get_constraints_for_column(Author, 'nom_de_plume'),
['schema_author_nom_de_plume_7570a851', 'schema_author_nom_de_plume_7570a851_like'],
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_add_unique_charfield(self):
field = CharField(max_length=255, unique=True)
field.set_attributes_from_name('nom_de_plume')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.add_field(Author, field)
# Should create two indexes; one for like operator.
self.assertEqual(
self.get_constraints_for_column(Author, 'nom_de_plume'),
['schema_author_nom_de_plume_7570a851_like', 'schema_author_nom_de_plume_key']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_index_to_charfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
# Alter to add db_index=True and create 2 indexes.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, db_index=True)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Author, 'name'),
['schema_author_name_1fbc5617', 'schema_author_name_1fbc5617_like']
)
# Remove db_index=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_unique_to_charfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
# Alter to add unique=True and create 2 indexes.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Author, 'name'),
['schema_author_name_1fbc5617_like', 'schema_author_name_1fbc5617_uniq']
)
# Remove unique=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_index_to_textfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Note)
self.assertEqual(self.get_constraints_for_column(Note, 'info'), [])
# Alter to add db_index=True and create 2 indexes.
old_field = Note._meta.get_field('info')
new_field = TextField(db_index=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Note, 'info'),
['schema_note_info_4b0ea695', 'schema_note_info_4b0ea695_like']
)
# Remove db_index=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Note, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Note, 'info'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_unique_to_charfield_with_db_index(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to add unique=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, db_index=True, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to remove unique=True (should drop unique index)
new_field2 = CharField(max_length=100, db_index=True)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_remove_unique_and_db_index_from_charfield(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to add unique=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, db_index=True, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to remove both unique=True and db_index=True (should drop all indexes)
new_field2 = CharField(max_length=100)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(self.get_constraints_for_column(BookWithoutAuthor, 'title'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_swap_unique_and_db_index_with_charfield(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to set unique=True and remove db_index=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to set db_index=True and remove unique=True (should restore index)
new_field2 = CharField(max_length=100, db_index=True)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_db_index_to_charfield_with_unique(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Tag)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
# Alter to add db_index=True
old_field = Tag._meta.get_field('slug')
new_field = SlugField(db_index=True, unique=True)
new_field.set_attributes_from_name('slug')
with connection.schema_editor() as editor:
editor.alter_field(Tag, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
# Alter to remove db_index=True
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name('slug')
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
def test_alter_field_add_index_to_integerfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), [])
# Alter to add db_index=True and create index.
old_field = Author._meta.get_field('weight')
new_field = IntegerField(null=True, db_index=True)
new_field.set_attributes_from_name('weight')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), ['schema_author_weight_587740f9'])
# Remove db_index=True to drop index.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), [])
def test_alter_pk_with_self_referential_field(self):
"""
Changing the primary key field name of a model with a self-referential
foreign key (#26384).
"""
with connection.schema_editor() as editor:
editor.create_model(Node)
old_field = Node._meta.get_field('node_id')
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Node, old_field, new_field, strict=True)
self.assertForeignKeyExists(Node, 'parent_id', Node._meta.db_table)
@mock.patch('django.db.backends.base.schema.datetime')
@mock.patch('django.db.backends.base.schema.timezone')
def test_add_datefield_and_datetimefield_use_effective_default(self, mocked_datetime, mocked_tz):
"""
effective_default() should be used for DateField, DateTimeField, and
TimeField if auto_now or auto_now_add is set (#25005).
"""
now = datetime.datetime(month=1, day=1, year=2000, hour=1, minute=1)
now_tz = datetime.datetime(month=1, day=1, year=2000, hour=1, minute=1, tzinfo=timezone.utc)
mocked_datetime.now = mock.MagicMock(return_value=now)
mocked_tz.now = mock.MagicMock(return_value=now_tz)
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Check auto_now/auto_now_add attributes are not defined
columns = self.column_classes(Author)
self.assertNotIn("dob_auto_now", columns)
self.assertNotIn("dob_auto_now_add", columns)
self.assertNotIn("dtob_auto_now", columns)
self.assertNotIn("dtob_auto_now_add", columns)
self.assertNotIn("tob_auto_now", columns)
self.assertNotIn("tob_auto_now_add", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Ensure fields were added with the correct defaults
dob_auto_now = DateField(auto_now=True)
dob_auto_now.set_attributes_from_name('dob_auto_now')
self.check_added_field_default(
editor, Author, dob_auto_now, 'dob_auto_now', now.date(),
cast_function=lambda x: x.date(),
)
dob_auto_now_add = DateField(auto_now_add=True)
dob_auto_now_add.set_attributes_from_name('dob_auto_now_add')
self.check_added_field_default(
editor, Author, dob_auto_now_add, 'dob_auto_now_add', now.date(),
cast_function=lambda x: x.date(),
)
dtob_auto_now = DateTimeField(auto_now=True)
dtob_auto_now.set_attributes_from_name('dtob_auto_now')
self.check_added_field_default(
editor, Author, dtob_auto_now, 'dtob_auto_now', now,
)
dt_tm_of_birth_auto_now_add = DateTimeField(auto_now_add=True)
dt_tm_of_birth_auto_now_add.set_attributes_from_name('dtob_auto_now_add')
self.check_added_field_default(
editor, Author, dt_tm_of_birth_auto_now_add, 'dtob_auto_now_add', now,
)
tob_auto_now = TimeField(auto_now=True)
tob_auto_now.set_attributes_from_name('tob_auto_now')
self.check_added_field_default(
editor, Author, tob_auto_now, 'tob_auto_now', now.time(),
cast_function=lambda x: x.time(),
)
tob_auto_now_add = TimeField(auto_now_add=True)
tob_auto_now_add.set_attributes_from_name('tob_auto_now_add')
self.check_added_field_default(
editor, Author, tob_auto_now_add, 'tob_auto_now_add', now.time(),
cast_function=lambda x: x.time(),
)
def test_namespaced_db_table_create_index_name(self):
"""
Table names are stripped of their namespace/schema before being used to
generate index names.
"""
with connection.schema_editor() as editor:
max_name_length = connection.ops.max_name_length() or 200
namespace = 'n' * max_name_length
table_name = 't' * max_name_length
namespaced_table_name = '"%s"."%s"' % (namespace, table_name)
self.assertEqual(
editor._create_index_name(table_name, []),
editor._create_index_name(namespaced_table_name, []),
)
@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle specific db_table syntax')
def test_creation_with_db_table_double_quotes(self):
oracle_user = connection.creation._test_database_user()
class Student(Model):
name = CharField(max_length=30)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = '"%s"."DJANGO_STUDENT_TABLE"' % oracle_user
class Document(Model):
name = CharField(max_length=30)
students = ManyToManyField(Student)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = '"%s"."DJANGO_DOCUMENT_TABLE"' % oracle_user
self.local_models = [Student, Document]
with connection.schema_editor() as editor:
editor.create_model(Student)
editor.create_model(Document)
doc = Document.objects.create(name='Test Name')
student = Student.objects.create(name='Some man')
doc.students.add(student)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific db_table syntax.')
def test_namespaced_db_table_foreign_key_reference(self):
with connection.cursor() as cursor:
cursor.execute('CREATE SCHEMA django_schema_tests')
def delete_schema():
with connection.cursor() as cursor:
cursor.execute('DROP SCHEMA django_schema_tests CASCADE')
self.addCleanup(delete_schema)
class Author(Model):
class Meta:
app_label = 'schema'
class Book(Model):
class Meta:
app_label = 'schema'
db_table = '"django_schema_tests"."schema_book"'
author = ForeignKey(Author, CASCADE)
author.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.add_field(Book, author)
def test_rename_table_renames_deferred_sql_references(self):
atomic_rename = connection.features.supports_atomic_references_rename
with connection.schema_editor(atomic=atomic_rename) as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.alter_db_table(Author, 'schema_author', 'schema_renamed_author')
editor.alter_db_table(Author, 'schema_book', 'schema_renamed_book')
try:
self.assertGreater(len(editor.deferred_sql), 0)
for statement in editor.deferred_sql:
self.assertIs(statement.references_table('schema_author'), False)
self.assertIs(statement.references_table('schema_book'), False)
finally:
editor.alter_db_table(Author, 'schema_renamed_author', 'schema_author')
editor.alter_db_table(Author, 'schema_renamed_book', 'schema_book')
def test_rename_column_renames_deferred_sql_references(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
old_title = Book._meta.get_field('title')
new_title = CharField(max_length=100, db_index=True)
new_title.set_attributes_from_name('renamed_title')
editor.alter_field(Book, old_title, new_title)
old_author = Book._meta.get_field('author')
new_author = ForeignKey(Author, CASCADE)
new_author.set_attributes_from_name('renamed_author')
editor.alter_field(Book, old_author, new_author)
self.assertGreater(len(editor.deferred_sql), 0)
for statement in editor.deferred_sql:
self.assertIs(statement.references_column('book', 'title'), False)
self.assertIs(statement.references_column('book', 'author_id'), False)
@isolate_apps('schema')
def test_referenced_field_without_constraint_rename_inside_atomic_block(self):
"""
Foreign keys without database level constraint don't prevent the field
they reference from being renamed in an atomic block.
"""
class Foo(Model):
field = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Bar(Model):
foo = ForeignKey(Foo, CASCADE, to_field='field', db_constraint=False)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo, Bar]
with connection.schema_editor() as editor:
editor.create_model(Foo)
editor.create_model(Bar)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=True) as editor:
editor.alter_field(Foo, Foo._meta.get_field('field'), new_field)
@isolate_apps('schema')
def test_referenced_table_without_constraint_rename_inside_atomic_block(self):
"""
Foreign keys without database level constraint don't prevent the table
they reference from being renamed in an atomic block.
"""
class Foo(Model):
field = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Bar(Model):
foo = ForeignKey(Foo, CASCADE, to_field='field', db_constraint=False)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo, Bar]
with connection.schema_editor() as editor:
editor.create_model(Foo)
editor.create_model(Bar)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=True) as editor:
editor.alter_db_table(Foo, Foo._meta.db_table, 'renamed_table')
Foo._meta.db_table = 'renamed_table'
@isolate_apps('schema')
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_db_collation_charfield(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
class Foo(Model):
field = CharField(max_length=255, db_collation=collation)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo]
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.assertEqual(
self.get_column_collation(Foo._meta.db_table, 'field'),
collation,
)
@isolate_apps('schema')
@skipUnlessDBFeature('supports_collation_on_textfield')
def test_db_collation_textfield(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
class Foo(Model):
field = TextField(db_collation=collation)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo]
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.assertEqual(
self.get_column_collation(Foo._meta.db_table, 'field'),
collation,
)
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_add_field_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Author)
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('alias')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
self.assertEqual(
columns['alias'][0],
connection.features.introspected_field_types['CharField'],
)
self.assertEqual(columns['alias'][1][8], collation)
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_alter_field_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('name')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_column_collation(Author._meta.db_table, 'name'),
collation,
)
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertIsNone(self.get_column_collation(Author._meta.db_table, 'name'))
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_alter_field_type_and_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field('info')
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('info')
new_field.model = Note
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(
columns['info'][0],
connection.features.introspected_field_types['CharField'],
)
self.assertEqual(columns['info'][1][8], collation)
with connection.schema_editor() as editor:
editor.alter_field(Note, new_field, old_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(columns['info'][0], 'TextField')
self.assertIsNone(columns['info'][1][8])
@skipUnlessDBFeature(
'supports_collation_on_charfield',
'supports_non_deterministic_collations',
)
def test_ci_cs_db_collation(self):
cs_collation = connection.features.test_collations.get('cs')
ci_collation = connection.features.test_collations.get('ci')
try:
if connection.vendor == 'mysql':
cs_collation = 'latin1_general_cs'
elif connection.vendor == 'postgresql':
cs_collation = 'en-x-icu'
with connection.cursor() as cursor:
cursor.execute(
"CREATE COLLATION IF NOT EXISTS case_insensitive "
"(provider = icu, locale = 'und-u-ks-level2', "
"deterministic = false)"
)
ci_collation = 'case_insensitive'
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
# Case-insensitive collation.
old_field = Author._meta.get_field('name')
new_field_ci = CharField(max_length=255, db_collation=ci_collation)
new_field_ci.set_attributes_from_name('name')
new_field_ci.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field_ci, strict=True)
Author.objects.create(name='ANDREW')
self.assertIs(Author.objects.filter(name='Andrew').exists(), True)
# Case-sensitive collation.
new_field_cs = CharField(max_length=255, db_collation=cs_collation)
new_field_cs.set_attributes_from_name('name')
new_field_cs.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field_ci, new_field_cs, strict=True)
self.assertIs(Author.objects.filter(name='Andrew').exists(), False)
finally:
if connection.vendor == 'postgresql':
with connection.cursor() as cursor:
cursor.execute('DROP COLLATION IF EXISTS case_insensitive')
|
bf63a96fbf885a699a6cc04d73d6fbc8813f03b38de2ae1acc27e837410b565b | from django.contrib.admin import ModelAdmin, TabularInline
from django.contrib.admin.helpers import InlineAdminForm
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.auth.models import Permission, User
from django.contrib.contenttypes.models import ContentType
from django.test import RequestFactory, TestCase, override_settings
from django.urls import reverse
from .admin import InnerInline, site as admin_site
from .models import (
Author, BinaryTree, Book, BothVerboseNameProfile, Chapter, Child,
ChildModel1, ChildModel2, Fashionista, FootNote, Holder, Holder2, Holder3,
Holder4, Inner, Inner2, Inner3, Inner4Stacked, Inner4Tabular, Novel,
OutfitItem, Parent, ParentModelWithCustomPk, Person, Poll, Profile,
ProfileCollection, Question, Sighting, SomeChildModel, SomeParentModel,
Teacher, VerboseNamePluralProfile, VerboseNameProfile,
)
INLINE_CHANGELINK_HTML = 'class="inlinechangelink">Change</a>'
class TestDataMixin:
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', email='[email protected]', password='secret')
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInline(TestDataMixin, TestCase):
factory = RequestFactory()
@classmethod
def setUpTestData(cls):
super().setUpTestData()
cls.holder = Holder.objects.create(dummy=13)
Inner.objects.create(dummy=42, holder=cls.holder)
cls.parent = SomeParentModel.objects.create(name='a')
SomeChildModel.objects.create(name='b', position='0', parent=cls.parent)
SomeChildModel.objects.create(name='c', position='1', parent=cls.parent)
cls.view_only_user = User.objects.create_user(
username='user', password='pwd', is_staff=True,
)
parent_ct = ContentType.objects.get_for_model(SomeParentModel)
child_ct = ContentType.objects.get_for_model(SomeChildModel)
permission = Permission.objects.get(
codename='view_someparentmodel',
content_type=parent_ct,
)
cls.view_only_user.user_permissions.add(permission)
permission = Permission.objects.get(
codename='view_somechildmodel',
content_type=child_ct,
)
cls.view_only_user.user_permissions.add(permission)
def setUp(self):
self.client.force_login(self.superuser)
def test_can_delete(self):
"""
can_delete should be passed to inlineformset factory.
"""
response = self.client.get(
reverse('admin:admin_inlines_holder_change', args=(self.holder.id,))
)
inner_formset = response.context['inline_admin_formsets'][0].formset
expected = InnerInline.can_delete
actual = inner_formset.can_delete
self.assertEqual(expected, actual, 'can_delete must be equal')
def test_readonly_stacked_inline_label(self):
"""Bug #13174."""
holder = Holder.objects.create(dummy=42)
Inner.objects.create(holder=holder, dummy=42, readonly='')
response = self.client.get(
reverse('admin:admin_inlines_holder_change', args=(holder.id,))
)
self.assertContains(response, '<label>Inner readonly label:</label>')
def test_many_to_many_inlines(self):
"Autogenerated many-to-many inlines are displayed correctly (#13407)"
response = self.client.get(reverse('admin:admin_inlines_author_add'))
# The heading for the m2m inline block uses the right text
self.assertContains(response, '<h2>Author-book relationships</h2>')
# The "add another" label is correct
self.assertContains(response, 'Add another Author-book relationship')
# The '+' is dropped from the autogenerated form prefix (Author_books+)
self.assertContains(response, 'id="id_Author_books-TOTAL_FORMS"')
def test_inline_primary(self):
person = Person.objects.create(firstname='Imelda')
item = OutfitItem.objects.create(name='Shoes')
# Imelda likes shoes, but can't carry her own bags.
data = {
'shoppingweakness_set-TOTAL_FORMS': 1,
'shoppingweakness_set-INITIAL_FORMS': 0,
'shoppingweakness_set-MAX_NUM_FORMS': 0,
'_save': 'Save',
'person': person.id,
'max_weight': 0,
'shoppingweakness_set-0-item': item.id,
}
response = self.client.post(reverse('admin:admin_inlines_fashionista_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(len(Fashionista.objects.filter(person__firstname='Imelda')), 1)
def test_tabular_inline_column_css_class(self):
"""
Field names are included in the context to output a field-specific
CSS class name in the column headers.
"""
response = self.client.get(reverse('admin:admin_inlines_poll_add'))
text_field, call_me_field = list(response.context['inline_admin_formset'].fields())
# Editable field.
self.assertEqual(text_field['name'], 'text')
self.assertContains(response, '<th class="column-text required">')
# Read-only field.
self.assertEqual(call_me_field['name'], 'call_me')
self.assertContains(response, '<th class="column-call_me">')
def test_custom_form_tabular_inline_label(self):
"""
A model form with a form field specified (TitleForm.title1) should have
its label rendered in the tabular inline.
"""
response = self.client.get(reverse('admin:admin_inlines_titlecollection_add'))
self.assertContains(response, '<th class="column-title1 required">Title1</th>', html=True)
def test_custom_form_tabular_inline_extra_field_label(self):
response = self.client.get(reverse('admin:admin_inlines_outfititem_add'))
_, extra_field = list(response.context['inline_admin_formset'].fields())
self.assertEqual(extra_field['label'], 'Extra field')
def test_non_editable_custom_form_tabular_inline_extra_field_label(self):
response = self.client.get(reverse('admin:admin_inlines_chapter_add'))
_, extra_field = list(response.context['inline_admin_formset'].fields())
self.assertEqual(extra_field['label'], 'Extra field')
def test_custom_form_tabular_inline_overridden_label(self):
"""
SomeChildModelForm.__init__() overrides the label of a form field.
That label is displayed in the TabularInline.
"""
response = self.client.get(reverse('admin:admin_inlines_someparentmodel_add'))
field = list(response.context['inline_admin_formset'].fields())[0]
self.assertEqual(field['label'], 'new label')
self.assertContains(response, '<th class="column-name required">New label</th>', html=True)
def test_tabular_non_field_errors(self):
"""
non_field_errors are displayed correctly, including the correct value
for colspan.
"""
data = {
'title_set-TOTAL_FORMS': 1,
'title_set-INITIAL_FORMS': 0,
'title_set-MAX_NUM_FORMS': 0,
'_save': 'Save',
'title_set-0-title1': 'a title',
'title_set-0-title2': 'a different title',
}
response = self.client.post(reverse('admin:admin_inlines_titlecollection_add'), data)
# Here colspan is "4": two fields (title1 and title2), one hidden field and the delete checkbox.
self.assertContains(
response,
'<tr class="row-form-errors"><td colspan="4"><ul class="errorlist nonfield">'
'<li>The two titles must be the same</li></ul></td></tr>'
)
def test_no_parent_callable_lookup(self):
"""Admin inline `readonly_field` shouldn't invoke parent ModelAdmin callable"""
# Identically named callable isn't present in the parent ModelAdmin,
# rendering of the add view shouldn't explode
response = self.client.get(reverse('admin:admin_inlines_novel_add'))
# View should have the child inlines section
self.assertContains(
response,
'<div class="js-inline-admin-formset inline-group" id="chapter_set-group"'
)
def test_callable_lookup(self):
"""Admin inline should invoke local callable when its name is listed in readonly_fields"""
response = self.client.get(reverse('admin:admin_inlines_poll_add'))
# Add parent object view should have the child inlines section
self.assertContains(
response,
'<div class="js-inline-admin-formset inline-group" id="question_set-group"'
)
# The right callable should be used for the inline readonly_fields
# column cells
self.assertContains(response, '<p>Callable in QuestionInline</p>')
def test_help_text(self):
"""
The inlines' model field help texts are displayed when using both the
stacked and tabular layouts.
"""
response = self.client.get(reverse('admin:admin_inlines_holder4_add'))
self.assertContains(response, '<div class="help">Awesome stacked help text is awesome.</div>', 4)
self.assertContains(
response,
'<img src="/static/admin/img/icon-unknown.svg" '
'class="help help-tooltip" width="10" height="10" '
'alt="(Awesome tabular help text is awesome.)" '
'title="Awesome tabular help text is awesome.">',
1
)
# ReadOnly fields
response = self.client.get(reverse('admin:admin_inlines_capofamiglia_add'))
self.assertContains(
response,
'<img src="/static/admin/img/icon-unknown.svg" '
'class="help help-tooltip" width="10" height="10" '
'alt="(Help text for ReadOnlyInline)" '
'title="Help text for ReadOnlyInline">',
1
)
def test_tabular_model_form_meta_readonly_field(self):
"""
Tabular inlines use ModelForm.Meta.help_texts and labels for read-only
fields.
"""
response = self.client.get(reverse('admin:admin_inlines_someparentmodel_add'))
self.assertContains(
response,
'<img src="/static/admin/img/icon-unknown.svg" '
'class="help help-tooltip" width="10" height="10" '
'alt="(Help text from ModelForm.Meta)" '
'title="Help text from ModelForm.Meta">'
)
self.assertContains(response, 'Label from ModelForm.Meta')
def test_inline_hidden_field_no_column(self):
"""#18263 -- Make sure hidden fields don't get a column in tabular inlines"""
parent = SomeParentModel.objects.create(name='a')
SomeChildModel.objects.create(name='b', position='0', parent=parent)
SomeChildModel.objects.create(name='c', position='1', parent=parent)
response = self.client.get(reverse('admin:admin_inlines_someparentmodel_change', args=(parent.pk,)))
self.assertNotContains(response, '<td class="field-position">')
self.assertInHTML(
'<input id="id_somechildmodel_set-1-position" '
'name="somechildmodel_set-1-position" type="hidden" value="1">',
response.rendered_content,
)
def test_tabular_inline_hidden_field_with_view_only_permissions(self):
"""
Content of hidden field is not visible in tabular inline when user has
view-only permission.
"""
self.client.force_login(self.view_only_user)
url = reverse(
'tabular_inline_hidden_field_admin:admin_inlines_someparentmodel_change',
args=(self.parent.pk,),
)
response = self.client.get(url)
self.assertInHTML('<th class="column-position hidden">Position</th>', response.rendered_content)
self.assertInHTML('<td class="field-position hidden"><p>0</p></td>', response.rendered_content)
self.assertInHTML('<td class="field-position hidden"><p>1</p></td>', response.rendered_content)
def test_stacked_inline_hidden_field_with_view_only_permissions(self):
"""
Content of hidden field is not visible in stacked inline when user has
view-only permission.
"""
self.client.force_login(self.view_only_user)
url = reverse(
'stacked_inline_hidden_field_in_group_admin:admin_inlines_someparentmodel_change',
args=(self.parent.pk,),
)
response = self.client.get(url)
# The whole line containing name + position fields is not hidden.
self.assertContains(response, '<div class="form-row field-name field-position">')
# The div containing the position field is hidden.
self.assertInHTML(
'<div class="fieldBox field-position hidden">'
'<label class="inline">Position:</label>'
'<div class="readonly">0</div></div>',
response.rendered_content,
)
self.assertInHTML(
'<div class="fieldBox field-position hidden">'
'<label class="inline">Position:</label>'
'<div class="readonly">1</div></div>',
response.rendered_content,
)
def test_stacked_inline_single_hidden_field_in_line_with_view_only_permissions(self):
"""
Content of hidden field is not visible in stacked inline when user has
view-only permission and the field is grouped on a separate line.
"""
self.client.force_login(self.view_only_user)
url = reverse(
'stacked_inline_hidden_field_on_single_line_admin:admin_inlines_someparentmodel_change',
args=(self.parent.pk,),
)
response = self.client.get(url)
# The whole line containing position field is hidden.
self.assertInHTML(
'<div class="form-row hidden field-position">'
'<div><label>Position:</label>'
'<div class="readonly">0</div></div></div>',
response.rendered_content,
)
self.assertInHTML(
'<div class="form-row hidden field-position">'
'<div><label>Position:</label>'
'<div class="readonly">1</div></div></div>',
response.rendered_content,
)
def test_tabular_inline_with_hidden_field_non_field_errors_has_correct_colspan(self):
"""
In tabular inlines, when a form has non-field errors, those errors
are rendered in a table line with a single cell spanning the whole
table width. Colspan must be equal to the number of visible columns.
"""
parent = SomeParentModel.objects.create(name='a')
child = SomeChildModel.objects.create(name='b', position='0', parent=parent)
url = reverse(
'tabular_inline_hidden_field_admin:admin_inlines_someparentmodel_change',
args=(parent.id,),
)
data = {
'name': parent.name,
'somechildmodel_set-TOTAL_FORMS': 1,
'somechildmodel_set-INITIAL_FORMS': 1,
'somechildmodel_set-MIN_NUM_FORMS': 0,
'somechildmodel_set-MAX_NUM_FORMS': 1000,
'_save': 'Save',
'somechildmodel_set-0-id': child.id,
'somechildmodel_set-0-parent': parent.id,
'somechildmodel_set-0-name': child.name,
'somechildmodel_set-0-position': 1,
}
response = self.client.post(url, data)
# Form has 3 visible columns and 1 hidden column.
self.assertInHTML(
'<thead><tr><th class="original"></th>'
'<th class="column-name required">Name</th>'
'<th class="column-position required hidden">Position</th>'
'<th>Delete?</th></tr></thead>',
response.rendered_content,
)
# The non-field error must be spanned on 3 (visible) columns.
self.assertInHTML(
'<tr class="row-form-errors"><td colspan="3">'
'<ul class="errorlist nonfield"><li>A non-field error</li></ul></td></tr>',
response.rendered_content,
)
def test_non_related_name_inline(self):
"""
Multiple inlines with related_name='+' have correct form prefixes.
"""
response = self.client.get(reverse('admin:admin_inlines_capofamiglia_add'))
self.assertContains(response, '<input type="hidden" name="-1-0-id" id="id_-1-0-id">', html=True)
self.assertContains(
response,
'<input type="hidden" name="-1-0-capo_famiglia" id="id_-1-0-capo_famiglia">',
html=True
)
self.assertContains(
response,
'<input id="id_-1-0-name" type="text" class="vTextField" name="-1-0-name" maxlength="100">',
html=True
)
self.assertContains(response, '<input type="hidden" name="-2-0-id" id="id_-2-0-id">', html=True)
self.assertContains(
response,
'<input type="hidden" name="-2-0-capo_famiglia" id="id_-2-0-capo_famiglia">',
html=True
)
self.assertContains(
response,
'<input id="id_-2-0-name" type="text" class="vTextField" name="-2-0-name" maxlength="100">',
html=True
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_localize_pk_shortcut(self):
"""
The "View on Site" link is correct for locales that use thousand
separators.
"""
holder = Holder.objects.create(pk=123456789, dummy=42)
inner = Inner.objects.create(pk=987654321, holder=holder, dummy=42, readonly='')
response = self.client.get(reverse('admin:admin_inlines_holder_change', args=(holder.id,)))
inner_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(inner).pk, inner.pk)
self.assertContains(response, inner_shortcut)
def test_custom_pk_shortcut(self):
"""
The "View on Site" link is correct for models with a custom primary key
field.
"""
parent = ParentModelWithCustomPk.objects.create(my_own_pk="foo", name="Foo")
child1 = ChildModel1.objects.create(my_own_pk="bar", name="Bar", parent=parent)
child2 = ChildModel2.objects.create(my_own_pk="baz", name="Baz", parent=parent)
response = self.client.get(reverse('admin:admin_inlines_parentmodelwithcustompk_change', args=('foo',)))
child1_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(child1).pk, child1.pk)
child2_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(child2).pk, child2.pk)
self.assertContains(response, child1_shortcut)
self.assertContains(response, child2_shortcut)
def test_create_inlines_on_inherited_model(self):
"""
An object can be created with inlines when it inherits another class.
"""
data = {
'name': 'Martian',
'sighting_set-TOTAL_FORMS': 1,
'sighting_set-INITIAL_FORMS': 0,
'sighting_set-MAX_NUM_FORMS': 0,
'sighting_set-0-place': 'Zone 51',
'_save': 'Save',
}
response = self.client.post(reverse('admin:admin_inlines_extraterrestrial_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Sighting.objects.filter(et__name='Martian').count(), 1)
def test_custom_get_extra_form(self):
bt_head = BinaryTree.objects.create(name="Tree Head")
BinaryTree.objects.create(name="First Child", parent=bt_head)
# The maximum number of forms should respect 'get_max_num' on the
# ModelAdmin
max_forms_input = (
'<input id="id_binarytree_set-MAX_NUM_FORMS" '
'name="binarytree_set-MAX_NUM_FORMS" type="hidden" value="%d">'
)
# The total number of forms will remain the same in either case
total_forms_hidden = (
'<input id="id_binarytree_set-TOTAL_FORMS" '
'name="binarytree_set-TOTAL_FORMS" type="hidden" value="2">'
)
response = self.client.get(reverse('admin:admin_inlines_binarytree_add'))
self.assertInHTML(max_forms_input % 3, response.rendered_content)
self.assertInHTML(total_forms_hidden, response.rendered_content)
response = self.client.get(reverse('admin:admin_inlines_binarytree_change', args=(bt_head.id,)))
self.assertInHTML(max_forms_input % 2, response.rendered_content)
self.assertInHTML(total_forms_hidden, response.rendered_content)
def test_min_num(self):
"""
min_num and extra determine number of forms.
"""
class MinNumInline(TabularInline):
model = BinaryTree
min_num = 2
extra = 3
modeladmin = ModelAdmin(BinaryTree, admin_site)
modeladmin.inlines = [MinNumInline]
min_forms = (
'<input id="id_binarytree_set-MIN_NUM_FORMS" '
'name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="2">'
)
total_forms = (
'<input id="id_binarytree_set-TOTAL_FORMS" '
'name="binarytree_set-TOTAL_FORMS" type="hidden" value="5">'
)
request = self.factory.get(reverse('admin:admin_inlines_binarytree_add'))
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request)
self.assertInHTML(min_forms, response.rendered_content)
self.assertInHTML(total_forms, response.rendered_content)
def test_custom_min_num(self):
bt_head = BinaryTree.objects.create(name="Tree Head")
BinaryTree.objects.create(name="First Child", parent=bt_head)
class MinNumInline(TabularInline):
model = BinaryTree
extra = 3
def get_min_num(self, request, obj=None, **kwargs):
if obj:
return 5
return 2
modeladmin = ModelAdmin(BinaryTree, admin_site)
modeladmin.inlines = [MinNumInline]
min_forms = (
'<input id="id_binarytree_set-MIN_NUM_FORMS" '
'name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="%d">'
)
total_forms = (
'<input id="id_binarytree_set-TOTAL_FORMS" '
'name="binarytree_set-TOTAL_FORMS" type="hidden" value="%d">'
)
request = self.factory.get(reverse('admin:admin_inlines_binarytree_add'))
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request)
self.assertInHTML(min_forms % 2, response.rendered_content)
self.assertInHTML(total_forms % 5, response.rendered_content)
request = self.factory.get(reverse('admin:admin_inlines_binarytree_change', args=(bt_head.id,)))
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request, object_id=str(bt_head.id))
self.assertInHTML(min_forms % 5, response.rendered_content)
self.assertInHTML(total_forms % 8, response.rendered_content)
def test_inline_nonauto_noneditable_pk(self):
response = self.client.get(reverse('admin:admin_inlines_author_add'))
self.assertContains(
response,
'<input id="id_nonautopkbook_set-0-rand_pk" '
'name="nonautopkbook_set-0-rand_pk" type="hidden">',
html=True
)
self.assertContains(
response,
'<input id="id_nonautopkbook_set-2-0-rand_pk" '
'name="nonautopkbook_set-2-0-rand_pk" type="hidden">',
html=True
)
def test_inline_nonauto_noneditable_inherited_pk(self):
response = self.client.get(reverse('admin:admin_inlines_author_add'))
self.assertContains(
response,
'<input id="id_nonautopkbookchild_set-0-nonautopkbook_ptr" '
'name="nonautopkbookchild_set-0-nonautopkbook_ptr" type="hidden">',
html=True
)
self.assertContains(
response,
'<input id="id_nonautopkbookchild_set-2-nonautopkbook_ptr" '
'name="nonautopkbookchild_set-2-nonautopkbook_ptr" type="hidden">',
html=True
)
def test_inline_editable_pk(self):
response = self.client.get(reverse('admin:admin_inlines_author_add'))
self.assertContains(
response,
'<input class="vIntegerField" id="id_editablepkbook_set-0-manual_pk" '
'name="editablepkbook_set-0-manual_pk" type="number">',
html=True, count=1
)
self.assertContains(
response,
'<input class="vIntegerField" id="id_editablepkbook_set-2-0-manual_pk" '
'name="editablepkbook_set-2-0-manual_pk" type="number">',
html=True, count=1
)
def test_stacked_inline_edit_form_contains_has_original_class(self):
holder = Holder.objects.create(dummy=1)
holder.inner_set.create(dummy=1)
response = self.client.get(reverse('admin:admin_inlines_holder_change', args=(holder.pk,)))
self.assertContains(
response,
'<div class="inline-related has_original" id="inner_set-0">',
count=1
)
self.assertContains(
response,
'<div class="inline-related" id="inner_set-1">',
count=1
)
def test_inlines_show_change_link_registered(self):
"Inlines `show_change_link` for registered models when enabled."
holder = Holder4.objects.create(dummy=1)
item1 = Inner4Stacked.objects.create(dummy=1, holder=holder)
item2 = Inner4Tabular.objects.create(dummy=1, holder=holder)
items = (
('inner4stacked', item1.pk),
('inner4tabular', item2.pk),
)
response = self.client.get(reverse('admin:admin_inlines_holder4_change', args=(holder.pk,)))
self.assertTrue(response.context['inline_admin_formset'].opts.has_registered_model)
for model, pk in items:
url = reverse('admin:admin_inlines_%s_change' % model, args=(pk,))
self.assertContains(response, '<a href="%s" %s' % (url, INLINE_CHANGELINK_HTML))
def test_inlines_show_change_link_unregistered(self):
"Inlines `show_change_link` disabled for unregistered models."
parent = ParentModelWithCustomPk.objects.create(my_own_pk="foo", name="Foo")
ChildModel1.objects.create(my_own_pk="bar", name="Bar", parent=parent)
ChildModel2.objects.create(my_own_pk="baz", name="Baz", parent=parent)
response = self.client.get(reverse('admin:admin_inlines_parentmodelwithcustompk_change', args=('foo',)))
self.assertFalse(response.context['inline_admin_formset'].opts.has_registered_model)
self.assertNotContains(response, INLINE_CHANGELINK_HTML)
def test_tabular_inline_show_change_link_false_registered(self):
"Inlines `show_change_link` disabled by default."
poll = Poll.objects.create(name="New poll")
Question.objects.create(poll=poll)
response = self.client.get(reverse('admin:admin_inlines_poll_change', args=(poll.pk,)))
self.assertTrue(response.context['inline_admin_formset'].opts.has_registered_model)
self.assertNotContains(response, INLINE_CHANGELINK_HTML)
def test_noneditable_inline_has_field_inputs(self):
"""Inlines without change permission shows field inputs on add form."""
response = self.client.get(reverse('admin:admin_inlines_novelreadonlychapter_add'))
self.assertContains(
response,
'<input type="text" name="chapter_set-0-name" '
'class="vTextField" maxlength="40" id="id_chapter_set-0-name">',
html=True
)
def test_inlines_plural_heading_foreign_key(self):
response = self.client.get(reverse('admin:admin_inlines_holder4_add'))
self.assertContains(response, '<h2>Inner4 stackeds</h2>', html=True)
self.assertContains(response, '<h2>Inner4 tabulars</h2>', html=True)
def test_inlines_singular_heading_one_to_one(self):
response = self.client.get(reverse('admin:admin_inlines_person_add'))
self.assertContains(response, '<h2>Author</h2>', html=True) # Tabular.
self.assertContains(response, '<h2>Fashionista</h2>', html=True) # Stacked.
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineMedia(TestDataMixin, TestCase):
def setUp(self):
self.client.force_login(self.superuser)
def test_inline_media_only_base(self):
holder = Holder(dummy=13)
holder.save()
Inner(dummy=42, holder=holder).save()
change_url = reverse('admin:admin_inlines_holder_change', args=(holder.id,))
response = self.client.get(change_url)
self.assertContains(response, 'my_awesome_admin_scripts.js')
def test_inline_media_only_inline(self):
holder = Holder3(dummy=13)
holder.save()
Inner3(dummy=42, holder=holder).save()
change_url = reverse('admin:admin_inlines_holder3_change', args=(holder.id,))
response = self.client.get(change_url)
self.assertEqual(
response.context['inline_admin_formsets'][0].media._js,
[
'admin/js/vendor/jquery/jquery.min.js',
'my_awesome_inline_scripts.js',
'custom_number.js',
'admin/js/jquery.init.js',
'admin/js/inlines.js',
]
)
self.assertContains(response, 'my_awesome_inline_scripts.js')
def test_all_inline_media(self):
holder = Holder2(dummy=13)
holder.save()
Inner2(dummy=42, holder=holder).save()
change_url = reverse('admin:admin_inlines_holder2_change', args=(holder.id,))
response = self.client.get(change_url)
self.assertContains(response, 'my_awesome_admin_scripts.js')
self.assertContains(response, 'my_awesome_inline_scripts.js')
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineAdminForm(TestCase):
def test_immutable_content_type(self):
"""Regression for #9362
The problem depends only on InlineAdminForm and its "original"
argument, so we can safely set the other arguments to None/{}. We just
need to check that the content_type argument of Child isn't altered by
the internals of the inline form."""
sally = Teacher.objects.create(name='Sally')
john = Parent.objects.create(name='John')
joe = Child.objects.create(name='Joe', teacher=sally, parent=john)
iaf = InlineAdminForm(None, None, {}, {}, joe)
parent_ct = ContentType.objects.get_for_model(Parent)
self.assertEqual(iaf.original.content_type, parent_ct)
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineProtectedOnDelete(TestDataMixin, TestCase):
def setUp(self):
self.client.force_login(self.superuser)
def test_deleting_inline_with_protected_delete_does_not_validate(self):
lotr = Novel.objects.create(name='Lord of the rings')
chapter = Chapter.objects.create(novel=lotr, name='Many Meetings')
foot_note = FootNote.objects.create(chapter=chapter, note='yadda yadda')
change_url = reverse('admin:admin_inlines_novel_change', args=(lotr.id,))
response = self.client.get(change_url)
data = {
'name': lotr.name,
'chapter_set-TOTAL_FORMS': 1,
'chapter_set-INITIAL_FORMS': 1,
'chapter_set-MAX_NUM_FORMS': 1000,
'_save': 'Save',
'chapter_set-0-id': chapter.id,
'chapter_set-0-name': chapter.name,
'chapter_set-0-novel': lotr.id,
'chapter_set-0-DELETE': 'on'
}
response = self.client.post(change_url, data)
self.assertContains(response, "Deleting chapter %s would require deleting "
"the following protected related objects: foot note %s"
% (chapter, foot_note))
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlinePermissions(TestCase):
"""
Make sure the admin respects permissions for objects that are edited
inline. Refs #8060.
"""
@classmethod
def setUpTestData(cls):
cls.user = User(username='admin', is_staff=True, is_active=True)
cls.user.set_password('secret')
cls.user.save()
cls.author_ct = ContentType.objects.get_for_model(Author)
cls.holder_ct = ContentType.objects.get_for_model(Holder2)
cls.book_ct = ContentType.objects.get_for_model(Book)
cls.inner_ct = ContentType.objects.get_for_model(Inner2)
# User always has permissions to add and change Authors, and Holders,
# the main (parent) models of the inlines. Permissions on the inlines
# vary per test.
permission = Permission.objects.get(codename='add_author', content_type=cls.author_ct)
cls.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='change_author', content_type=cls.author_ct)
cls.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='add_holder2', content_type=cls.holder_ct)
cls.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='change_holder2', content_type=cls.holder_ct)
cls.user.user_permissions.add(permission)
author = Author.objects.create(pk=1, name='The Author')
cls.book = author.books.create(name='The inline Book')
cls.author_change_url = reverse('admin:admin_inlines_author_change', args=(author.id,))
# Get the ID of the automatically created intermediate model for the Author-Book m2m
author_book_auto_m2m_intermediate = Author.books.through.objects.get(author=author, book=cls.book)
cls.author_book_auto_m2m_intermediate_id = author_book_auto_m2m_intermediate.pk
cls.holder = Holder2.objects.create(dummy=13)
cls.inner2 = Inner2.objects.create(dummy=42, holder=cls.holder)
def setUp(self):
self.holder_change_url = reverse('admin:admin_inlines_holder2_change', args=(self.holder.id,))
self.client.force_login(self.user)
def test_inline_add_m2m_noperm(self):
response = self.client.get(reverse('admin:admin_inlines_author_add'))
# No change permission on books, so no inline
self.assertNotContains(response, '<h2>Author-book relationships</h2>')
self.assertNotContains(response, 'Add another Author-Book Relationship')
self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')
def test_inline_add_fk_noperm(self):
response = self.client.get(reverse('admin:admin_inlines_holder2_add'))
# No permissions on Inner2s, so no inline
self.assertNotContains(response, '<h2>Inner2s</h2>')
self.assertNotContains(response, 'Add another Inner2')
self.assertNotContains(response, 'id="id_inner2_set-TOTAL_FORMS"')
def test_inline_change_m2m_noperm(self):
response = self.client.get(self.author_change_url)
# No change permission on books, so no inline
self.assertNotContains(response, '<h2>Author-book relationships</h2>')
self.assertNotContains(response, 'Add another Author-Book Relationship')
self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')
def test_inline_change_fk_noperm(self):
response = self.client.get(self.holder_change_url)
# No permissions on Inner2s, so no inline
self.assertNotContains(response, '<h2>Inner2s</h2>')
self.assertNotContains(response, 'Add another Inner2')
self.assertNotContains(response, 'id="id_inner2_set-TOTAL_FORMS"')
def test_inline_add_m2m_view_only_perm(self):
permission = Permission.objects.get(codename='view_book', content_type=self.book_ct)
self.user.user_permissions.add(permission)
response = self.client.get(reverse('admin:admin_inlines_author_add'))
# View-only inlines. (It could be nicer to hide the empty, non-editable
# inlines on the add page.)
self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
self.assertIs(response.context['inline_admin_formset'].has_add_permission, False)
self.assertIs(response.context['inline_admin_formset'].has_change_permission, False)
self.assertIs(response.context['inline_admin_formset'].has_delete_permission, False)
self.assertContains(response, '<h2>Author-book relationships</h2>')
self.assertContains(
response,
'<input type="hidden" name="Author_books-TOTAL_FORMS" value="0" '
'id="id_Author_books-TOTAL_FORMS">',
html=True,
)
self.assertNotContains(response, 'Add another Author-Book Relationship')
def test_inline_add_m2m_add_perm(self):
permission = Permission.objects.get(codename='add_book', content_type=self.book_ct)
self.user.user_permissions.add(permission)
response = self.client.get(reverse('admin:admin_inlines_author_add'))
# No change permission on Books, so no inline
self.assertNotContains(response, '<h2>Author-book relationships</h2>')
self.assertNotContains(response, 'Add another Author-Book Relationship')
self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')
def test_inline_add_fk_add_perm(self):
permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(reverse('admin:admin_inlines_holder2_add'))
# Add permission on inner2s, so we get the inline
self.assertContains(response, '<h2>Inner2s</h2>')
self.assertContains(response, 'Add another Inner2')
self.assertContains(response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" '
'value="3" name="inner2_set-TOTAL_FORMS">', html=True)
def test_inline_change_m2m_add_perm(self):
permission = Permission.objects.get(codename='add_book', content_type=self.book_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.author_change_url)
# No change permission on books, so no inline
self.assertNotContains(response, '<h2>Author-book relationships</h2>')
self.assertNotContains(response, 'Add another Author-Book Relationship')
self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')
self.assertNotContains(response, 'id="id_Author_books-0-DELETE"')
def test_inline_change_m2m_view_only_perm(self):
permission = Permission.objects.get(codename='view_book', content_type=self.book_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.author_change_url)
# View-only inlines.
self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
self.assertIs(response.context['inline_admin_formset'].has_add_permission, False)
self.assertIs(response.context['inline_admin_formset'].has_change_permission, False)
self.assertIs(response.context['inline_admin_formset'].has_delete_permission, False)
self.assertContains(response, '<h2>Author-book relationships</h2>')
self.assertContains(
response,
'<input type="hidden" name="Author_books-TOTAL_FORMS" value="1" '
'id="id_Author_books-TOTAL_FORMS">',
html=True,
)
# The field in the inline is read-only.
self.assertContains(response, '<p>%s</p>' % self.book)
self.assertNotContains(
response,
'<input type="checkbox" name="Author_books-0-DELETE" id="id_Author_books-0-DELETE">',
html=True,
)
def test_inline_change_m2m_change_perm(self):
permission = Permission.objects.get(codename='change_book', content_type=self.book_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.author_change_url)
# We have change perm on books, so we can add/change/delete inlines
self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
self.assertIs(response.context['inline_admin_formset'].has_add_permission, True)
self.assertIs(response.context['inline_admin_formset'].has_change_permission, True)
self.assertIs(response.context['inline_admin_formset'].has_delete_permission, True)
self.assertContains(response, '<h2>Author-book relationships</h2>')
self.assertContains(response, 'Add another Author-book relationship')
self.assertContains(response, '<input type="hidden" id="id_Author_books-TOTAL_FORMS" '
'value="4" name="Author_books-TOTAL_FORMS">', html=True)
self.assertContains(
response,
'<input type="hidden" id="id_Author_books-0-id" value="%i" '
'name="Author_books-0-id">' % self.author_book_auto_m2m_intermediate_id,
html=True
)
self.assertContains(response, 'id="id_Author_books-0-DELETE"')
def test_inline_change_fk_add_perm(self):
permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.holder_change_url)
# Add permission on inner2s, so we can add but not modify existing
self.assertContains(response, '<h2>Inner2s</h2>')
self.assertContains(response, 'Add another Inner2')
# 3 extra forms only, not the existing instance form
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="3" '
'name="inner2_set-TOTAL_FORMS">',
html=True
)
self.assertNotContains(
response,
'<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
html=True
)
def test_inline_change_fk_change_perm(self):
permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.holder_change_url)
# Change permission on inner2s, so we can change existing but not add new
self.assertContains(response, '<h2>Inner2s</h2>', count=2)
# Just the one form for existing instances
self.assertContains(
response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="1" name="inner2_set-TOTAL_FORMS">',
html=True
)
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
html=True
)
# max-num 0 means we can't add new ones
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-MAX_NUM_FORMS" value="0" name="inner2_set-MAX_NUM_FORMS">',
html=True
)
# TabularInline
self.assertContains(response, '<th class="column-dummy required">Dummy</th>', html=True)
self.assertContains(
response,
'<input type="number" name="inner2_set-2-0-dummy" value="%s" '
'class="vIntegerField" id="id_inner2_set-2-0-dummy">' % self.inner2.dummy,
html=True,
)
def test_inline_change_fk_add_change_perm(self):
permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.holder_change_url)
# Add/change perm, so we can add new and change existing
self.assertContains(response, '<h2>Inner2s</h2>')
# One form for existing instance and three extra for new
self.assertContains(
response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="4" name="inner2_set-TOTAL_FORMS">',
html=True
)
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
html=True
)
def test_inline_change_fk_change_del_perm(self):
permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='delete_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.holder_change_url)
# Change/delete perm on inner2s, so we can change/delete existing
self.assertContains(response, '<h2>Inner2s</h2>')
# One form for existing instance only, no new
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="1" name="inner2_set-TOTAL_FORMS">',
html=True
)
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
html=True
)
self.assertContains(response, 'id="id_inner2_set-0-DELETE"')
def test_inline_change_fk_all_perms(self):
permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
permission = Permission.objects.get(codename='delete_inner2', content_type=self.inner_ct)
self.user.user_permissions.add(permission)
response = self.client.get(self.holder_change_url)
# All perms on inner2s, so we can add/change/delete
self.assertContains(response, '<h2>Inner2s</h2>', count=2)
# One form for existing instance only, three for new
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="4" name="inner2_set-TOTAL_FORMS">',
html=True
)
self.assertContains(
response,
'<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
html=True
)
self.assertContains(response, 'id="id_inner2_set-0-DELETE"')
# TabularInline
self.assertContains(response, '<th class="column-dummy required">Dummy</th>', html=True)
self.assertContains(
response,
'<input type="number" name="inner2_set-2-0-dummy" value="%s" '
'class="vIntegerField" id="id_inner2_set-2-0-dummy">' % self.inner2.dummy,
html=True,
)
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestReadOnlyChangeViewInlinePermissions(TestCase):
@classmethod
def setUpTestData(cls):
cls.user = User.objects.create_user('testing', password='password', is_staff=True)
cls.user.user_permissions.add(
Permission.objects.get(codename='view_poll', content_type=ContentType.objects.get_for_model(Poll))
)
cls.user.user_permissions.add(
*Permission.objects.filter(
codename__endswith="question", content_type=ContentType.objects.get_for_model(Question)
).values_list('pk', flat=True)
)
cls.poll = Poll.objects.create(name="Survey")
cls.add_url = reverse('admin:admin_inlines_poll_add')
cls.change_url = reverse('admin:admin_inlines_poll_change', args=(cls.poll.id,))
def setUp(self):
self.client.force_login(self.user)
def test_add_url_not_allowed(self):
response = self.client.get(self.add_url)
self.assertEqual(response.status_code, 403)
response = self.client.post(self.add_url, {})
self.assertEqual(response.status_code, 403)
def test_post_to_change_url_not_allowed(self):
response = self.client.post(self.change_url, {})
self.assertEqual(response.status_code, 403)
def test_get_to_change_url_is_allowed(self):
response = self.client.get(self.change_url)
self.assertEqual(response.status_code, 200)
def test_main_model_is_rendered_as_read_only(self):
response = self.client.get(self.change_url)
self.assertContains(
response,
'<div class="readonly">%s</div>' % self.poll.name,
html=True
)
input = '<input type="text" name="name" value="%s" class="vTextField" maxlength="40" required id="id_name">'
self.assertNotContains(
response,
input % self.poll.name,
html=True
)
def test_inlines_are_rendered_as_read_only(self):
question = Question.objects.create(text="How will this be rendered?", poll=self.poll)
response = self.client.get(self.change_url)
self.assertContains(
response,
'<td class="field-text"><p>%s</p></td>' % question.text,
html=True
)
self.assertNotContains(response, 'id="id_question_set-0-text"')
self.assertNotContains(response, 'id="id_related_objs-0-DELETE"')
def test_submit_line_shows_only_close_button(self):
response = self.client.get(self.change_url)
self.assertContains(
response,
'<a href="/admin/admin_inlines/poll/" class="closelink">Close</a>',
html=True
)
delete_link = '<p class="deletelink-box"><a href="/admin/admin_inlines/poll/%s/delete/" class="deletelink">Delete</a></p>' # noqa
self.assertNotContains(
response,
delete_link % self.poll.id,
html=True
)
self.assertNotContains(response, '<input type="submit" value="Save and add another" name="_addanother">')
self.assertNotContains(response, '<input type="submit" value="Save and continue editing" name="_continue">')
def test_inline_delete_buttons_are_not_shown(self):
Question.objects.create(text="How will this be rendered?", poll=self.poll)
response = self.client.get(self.change_url)
self.assertNotContains(
response,
'<input type="checkbox" name="question_set-0-DELETE" id="id_question_set-0-DELETE">',
html=True
)
def test_extra_inlines_are_not_shown(self):
response = self.client.get(self.change_url)
self.assertNotContains(response, 'id="id_question_set-0-text"')
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestVerboseNameInlineForms(TestDataMixin, TestCase):
factory = RequestFactory()
def test_verbose_name_inline(self):
class NonVerboseProfileInline(TabularInline):
model = Profile
verbose_name = 'Non-verbose childs'
class VerboseNameProfileInline(TabularInline):
model = VerboseNameProfile
verbose_name = 'Childs with verbose name'
class VerboseNamePluralProfileInline(TabularInline):
model = VerboseNamePluralProfile
verbose_name = 'Childs with verbose name plural'
class BothVerboseNameProfileInline(TabularInline):
model = BothVerboseNameProfile
verbose_name = 'Childs with both verbose names'
modeladmin = ModelAdmin(ProfileCollection, admin_site)
modeladmin.inlines = [
NonVerboseProfileInline,
VerboseNameProfileInline,
VerboseNamePluralProfileInline,
BothVerboseNameProfileInline,
]
obj = ProfileCollection.objects.create()
url = reverse('admin:admin_inlines_profilecollection_change', args=(obj.pk,))
request = self.factory.get(url)
request.user = self.superuser
response = modeladmin.changeform_view(request)
self.assertNotContains(response, 'Add another Profile')
# Non-verbose model.
self.assertContains(response, '<h2>Non-verbose childss</h2>')
self.assertContains(response, 'Add another Non-verbose child')
self.assertNotContains(response, '<h2>Profiles</h2>')
# Model with verbose name.
self.assertContains(response, '<h2>Childs with verbose names</h2>')
self.assertContains(response, 'Add another Childs with verbose name')
self.assertNotContains(response, '<h2>Model with verbose name onlys</h2>')
self.assertNotContains(response, 'Add another Model with verbose name only')
# Model with verbose name plural.
self.assertContains(response, '<h2>Childs with verbose name plurals</h2>')
self.assertContains(response, 'Add another Childs with verbose name plural')
self.assertNotContains(response, '<h2>Model with verbose name plural only</h2>')
# Model with both verbose names.
self.assertContains(response, '<h2>Childs with both verbose namess</h2>')
self.assertContains(response, 'Add another Childs with both verbose names')
self.assertNotContains(response, '<h2>Model with both - plural name</h2>')
self.assertNotContains(response, 'Add another Model with both - name')
def test_verbose_name_plural_inline(self):
class NonVerboseProfileInline(TabularInline):
model = Profile
verbose_name_plural = 'Non-verbose childs'
class VerboseNameProfileInline(TabularInline):
model = VerboseNameProfile
verbose_name_plural = 'Childs with verbose name'
class VerboseNamePluralProfileInline(TabularInline):
model = VerboseNamePluralProfile
verbose_name_plural = 'Childs with verbose name plural'
class BothVerboseNameProfileInline(TabularInline):
model = BothVerboseNameProfile
verbose_name_plural = 'Childs with both verbose names'
modeladmin = ModelAdmin(ProfileCollection, admin_site)
modeladmin.inlines = [
NonVerboseProfileInline,
VerboseNameProfileInline,
VerboseNamePluralProfileInline,
BothVerboseNameProfileInline,
]
obj = ProfileCollection.objects.create()
url = reverse('admin:admin_inlines_profilecollection_change', args=(obj.pk,))
request = self.factory.get(url)
request.user = self.superuser
response = modeladmin.changeform_view(request)
# Non-verbose model.
self.assertContains(response, '<h2>Non-verbose childs</h2>')
self.assertContains(response, 'Add another Profile')
self.assertNotContains(response, '<h2>Profiles</h2>')
# Model with verbose name.
self.assertContains(response, '<h2>Childs with verbose name</h2>')
self.assertContains(response, 'Add another Model with verbose name only')
self.assertNotContains(response, '<h2>Model with verbose name onlys</h2>')
# Model with verbose name plural.
self.assertContains(response, '<h2>Childs with verbose name plural</h2>')
self.assertContains(response, 'Add another Profile')
self.assertNotContains(response, '<h2>Model with verbose name plural only</h2>')
# Model with both verbose names.
self.assertContains(response, '<h2>Childs with both verbose names</h2>')
self.assertContains(response, 'Add another Model with both - name')
self.assertNotContains(response, '<h2>Model with both - plural name</h2>')
def test_both_verbose_names_inline(self):
class NonVerboseProfileInline(TabularInline):
model = Profile
verbose_name = 'Non-verbose childs - name'
verbose_name_plural = 'Non-verbose childs - plural name'
class VerboseNameProfileInline(TabularInline):
model = VerboseNameProfile
verbose_name = 'Childs with verbose name - name'
verbose_name_plural = 'Childs with verbose name - plural name'
class VerboseNamePluralProfileInline(TabularInline):
model = VerboseNamePluralProfile
verbose_name = 'Childs with verbose name plural - name'
verbose_name_plural = 'Childs with verbose name plural - plural name'
class BothVerboseNameProfileInline(TabularInline):
model = BothVerboseNameProfile
verbose_name = 'Childs with both - name'
verbose_name_plural = 'Childs with both - plural name'
modeladmin = ModelAdmin(ProfileCollection, admin_site)
modeladmin.inlines = [
NonVerboseProfileInline,
VerboseNameProfileInline,
VerboseNamePluralProfileInline,
BothVerboseNameProfileInline,
]
obj = ProfileCollection.objects.create()
url = reverse('admin:admin_inlines_profilecollection_change', args=(obj.pk,))
request = self.factory.get(url)
request.user = self.superuser
response = modeladmin.changeform_view(request)
self.assertNotContains(response, 'Add another Profile')
# Non-verbose model.
self.assertContains(response, '<h2>Non-verbose childs - plural name</h2>')
self.assertContains(response, 'Add another Non-verbose childs - name')
self.assertNotContains(response, '<h2>Profiles</h2>')
# Model with verbose name.
self.assertContains(response, '<h2>Childs with verbose name - plural name</h2>')
self.assertContains(response, 'Add another Childs with verbose name - name')
self.assertNotContains(response, '<h2>Model with verbose name onlys</h2>')
# Model with verbose name plural.
self.assertContains(
response,
'<h2>Childs with verbose name plural - plural name</h2>',
)
self.assertContains(
response,
'Add another Childs with verbose name plural - name',
)
self.assertNotContains(response, '<h2>Model with verbose name plural only</h2>')
# Model with both verbose names.
self.assertContains(response, '<h2>Childs with both - plural name</h2>')
self.assertContains(response, 'Add another Childs with both - name')
self.assertNotContains(response, '<h2>Model with both - plural name</h2>')
self.assertNotContains(response, 'Add another Model with both - name')
@override_settings(ROOT_URLCONF='admin_inlines.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_inlines'] + AdminSeleniumTestCase.available_apps
def setUp(self):
User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def test_add_stackeds(self):
"""
The "Add another XXX" link correctly adds items to the stacked formset.
"""
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))
inline_id = '#inner4stacked_set-group'
def rows_length():
return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4stacked_set' % inline_id))
self.assertEqual(rows_length(), 3)
add_button = self.selenium.find_element_by_link_text(
'Add another Inner4 stacked')
add_button.click()
self.assertEqual(rows_length(), 4)
def test_delete_stackeds(self):
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))
inline_id = '#inner4stacked_set-group'
def rows_length():
return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4stacked_set' % inline_id))
self.assertEqual(rows_length(), 3)
add_button = self.selenium.find_element_by_link_text(
'Add another Inner4 stacked')
add_button.click()
add_button.click()
self.assertEqual(rows_length(), 5, msg="sanity check")
for delete_link in self.selenium.find_elements_by_css_selector('%s .inline-deletelink' % inline_id):
delete_link.click()
with self.disable_implicit_wait():
self.assertEqual(rows_length(), 0)
def test_delete_invalid_stacked_inlines(self):
from selenium.common.exceptions import NoSuchElementException
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))
inline_id = '#inner4stacked_set-group'
def rows_length():
return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4stacked_set' % inline_id))
self.assertEqual(rows_length(), 3)
add_button = self.selenium.find_element_by_link_text(
'Add another Inner4 stacked')
add_button.click()
add_button.click()
self.assertEqual(len(self.selenium.find_elements_by_css_selector('#id_inner4stacked_set-4-dummy')), 1)
# Enter some data and click 'Save'.
self.selenium.find_element_by_name('dummy').send_keys('1')
self.selenium.find_element_by_name('inner4stacked_set-0-dummy').send_keys('100')
self.selenium.find_element_by_name('inner4stacked_set-1-dummy').send_keys('101')
self.selenium.find_element_by_name('inner4stacked_set-2-dummy').send_keys('222')
self.selenium.find_element_by_name('inner4stacked_set-3-dummy').send_keys('103')
self.selenium.find_element_by_name('inner4stacked_set-4-dummy').send_keys('222')
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.assertEqual(rows_length(), 5, msg="sanity check")
errorlist = self.selenium.find_element_by_css_selector(
'%s .dynamic-inner4stacked_set .errorlist li' % inline_id
)
self.assertEqual('Please correct the duplicate values below.', errorlist.text)
delete_link = self.selenium.find_element_by_css_selector('#inner4stacked_set-4 .inline-deletelink')
delete_link.click()
self.assertEqual(rows_length(), 4)
with self.disable_implicit_wait(), self.assertRaises(NoSuchElementException):
self.selenium.find_element_by_css_selector('%s .dynamic-inner4stacked_set .errorlist li' % inline_id)
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
# The objects have been created in the database.
self.assertEqual(Inner4Stacked.objects.all().count(), 4)
def test_delete_invalid_tabular_inlines(self):
from selenium.common.exceptions import NoSuchElementException
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))
inline_id = '#inner4tabular_set-group'
def rows_length():
return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4tabular_set' % inline_id))
self.assertEqual(rows_length(), 3)
add_button = self.selenium.find_element_by_link_text(
'Add another Inner4 tabular')
add_button.click()
add_button.click()
self.assertEqual(len(self.selenium.find_elements_by_css_selector('#id_inner4tabular_set-4-dummy')), 1)
# Enter some data and click 'Save'.
self.selenium.find_element_by_name('dummy').send_keys('1')
self.selenium.find_element_by_name('inner4tabular_set-0-dummy').send_keys('100')
self.selenium.find_element_by_name('inner4tabular_set-1-dummy').send_keys('101')
self.selenium.find_element_by_name('inner4tabular_set-2-dummy').send_keys('222')
self.selenium.find_element_by_name('inner4tabular_set-3-dummy').send_keys('103')
self.selenium.find_element_by_name('inner4tabular_set-4-dummy').send_keys('222')
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.assertEqual(rows_length(), 5, msg="sanity check")
# Non-field errorlist is in its own <tr> just before
# tr#inner4tabular_set-3:
errorlist = self.selenium.find_element_by_css_selector(
'%s #inner4tabular_set-3 + .row-form-errors .errorlist li' % inline_id
)
self.assertEqual('Please correct the duplicate values below.', errorlist.text)
delete_link = self.selenium.find_element_by_css_selector('#inner4tabular_set-4 .inline-deletelink')
delete_link.click()
self.assertEqual(rows_length(), 4)
with self.disable_implicit_wait(), self.assertRaises(NoSuchElementException):
self.selenium.find_element_by_css_selector('%s .dynamic-inner4tabular_set .errorlist li' % inline_id)
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
# The objects have been created in the database.
self.assertEqual(Inner4Tabular.objects.all().count(), 4)
def test_add_inlines(self):
"""
The "Add another XXX" link correctly adds items to the inline form.
"""
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_profilecollection_add'))
# There's only one inline to start with and it has the correct ID.
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set')), 1)
self.assertEqual(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set')[0].get_attribute('id'),
'profile_set-0')
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-0 input[name=profile_set-0-first_name]')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-0 input[name=profile_set-0-last_name]')), 1)
# Add an inline
self.selenium.find_element_by_link_text('Add another Profile').click()
# The inline has been added, it has the right id, and it contains the
# correct fields.
self.assertEqual(len(self.selenium.find_elements_by_css_selector('.dynamic-profile_set')), 2)
self.assertEqual(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set')[1].get_attribute('id'), 'profile_set-1')
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-1 input[name=profile_set-1-first_name]')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-1 input[name=profile_set-1-last_name]')), 1)
# Let's add another one to be sure
self.selenium.find_element_by_link_text('Add another Profile').click()
self.assertEqual(len(self.selenium.find_elements_by_css_selector('.dynamic-profile_set')), 3)
self.assertEqual(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set')[2].get_attribute('id'), 'profile_set-2')
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-2 input[name=profile_set-2-first_name]')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'.dynamic-profile_set#profile_set-2 input[name=profile_set-2-last_name]')), 1)
# Enter some data and click 'Save'
self.selenium.find_element_by_name('profile_set-0-first_name').send_keys('0 first name 1')
self.selenium.find_element_by_name('profile_set-0-last_name').send_keys('0 last name 2')
self.selenium.find_element_by_name('profile_set-1-first_name').send_keys('1 first name 1')
self.selenium.find_element_by_name('profile_set-1-last_name').send_keys('1 last name 2')
self.selenium.find_element_by_name('profile_set-2-first_name').send_keys('2 first name 1')
self.selenium.find_element_by_name('profile_set-2-last_name').send_keys('2 last name 2')
with self.wait_page_loaded():
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
# The objects have been created in the database
self.assertEqual(ProfileCollection.objects.all().count(), 1)
self.assertEqual(Profile.objects.all().count(), 3)
def test_add_inline_link_absent_for_view_only_parent_model(self):
from selenium.common.exceptions import NoSuchElementException
user = User.objects.create_user('testing', password='password', is_staff=True)
user.user_permissions.add(
Permission.objects.get(codename='view_poll', content_type=ContentType.objects.get_for_model(Poll))
)
user.user_permissions.add(
*Permission.objects.filter(
codename__endswith="question", content_type=ContentType.objects.get_for_model(Question)
).values_list('pk', flat=True)
)
self.admin_login(username='testing', password='password')
poll = Poll.objects.create(name="Survey")
change_url = reverse('admin:admin_inlines_poll_change', args=(poll.id,))
self.selenium.get(self.live_server_url + change_url)
with self.disable_implicit_wait():
with self.assertRaises(NoSuchElementException):
self.selenium.find_element_by_link_text('Add another Question')
def test_delete_inlines(self):
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_profilecollection_add'))
# Add a few inlines
self.selenium.find_element_by_link_text('Add another Profile').click()
self.selenium.find_element_by_link_text('Add another Profile').click()
self.selenium.find_element_by_link_text('Add another Profile').click()
self.selenium.find_element_by_link_text('Add another Profile').click()
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'#profile_set-group table tr.dynamic-profile_set')), 5)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-0')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-1')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-2')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-3')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-4')), 1)
# Click on a few delete buttons
self.selenium.find_element_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-1 td.delete a').click()
self.selenium.find_element_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-2 td.delete a').click()
# The rows are gone and the IDs have been re-sequenced
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'#profile_set-group table tr.dynamic-profile_set')), 3)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-0')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-1')), 1)
self.assertEqual(len(self.selenium.find_elements_by_css_selector(
'form#profilecollection_form tr.dynamic-profile_set#profile_set-2')), 1)
def test_collapsed_inlines(self):
# Collapsed inlines have SHOW/HIDE links.
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_author_add'))
# One field is in a stacked inline, other in a tabular one.
test_fields = ['#id_nonautopkbook_set-0-title', '#id_nonautopkbook_set-2-0-title']
show_links = self.selenium.find_elements_by_link_text('SHOW')
self.assertEqual(len(show_links), 3)
for show_index, field_name in enumerate(test_fields, 0):
self.wait_until_invisible(field_name)
show_links[show_index].click()
self.wait_until_visible(field_name)
hide_links = self.selenium.find_elements_by_link_text('HIDE')
self.assertEqual(len(hide_links), 2)
for hide_index, field_name in enumerate(test_fields, 0):
self.wait_until_visible(field_name)
hide_links[hide_index].click()
self.wait_until_invisible(field_name)
def test_added_stacked_inline_with_collapsed_fields(self):
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_teacher_add'))
self.selenium.find_element_by_link_text('Add another Child').click()
test_fields = ['#id_child_set-0-name', '#id_child_set-1-name']
show_links = self.selenium.find_elements_by_link_text('SHOW')
self.assertEqual(len(show_links), 2)
for show_index, field_name in enumerate(test_fields, 0):
self.wait_until_invisible(field_name)
show_links[show_index].click()
self.wait_until_visible(field_name)
hide_links = self.selenium.find_elements_by_link_text('HIDE')
self.assertEqual(len(hide_links), 2)
for hide_index, field_name in enumerate(test_fields, 0):
self.wait_until_visible(field_name)
hide_links[hide_index].click()
self.wait_until_invisible(field_name)
def assertBorder(self, element, border):
width, style, color = border.split(' ')
border_properties = [
'border-bottom-%s',
'border-left-%s',
'border-right-%s',
'border-top-%s',
]
for prop in border_properties:
prop = prop % 'width'
self.assertEqual(element.value_of_css_property(prop), width)
for prop in border_properties:
prop = prop % 'style'
self.assertEqual(element.value_of_css_property(prop), style)
# Convert hex color to rgb.
self.assertRegex(color, '#[0-9a-f]{6}')
r, g, b = int(color[1:3], 16), int(color[3:5], 16), int(color[5:], 16)
# The value may be expressed as either rgb() or rgba() depending on the
# browser.
colors = [
'rgb(%d, %d, %d)' % (r, g, b),
'rgba(%d, %d, %d, 1)' % (r, g, b),
]
for prop in border_properties:
prop = prop % 'color'
self.assertIn(element.value_of_css_property(prop), colors)
def test_inline_formset_error_input_border(self):
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder5_add'))
self.wait_until_visible('#id_dummy')
self.selenium.find_element_by_id('id_dummy').send_keys(1)
fields = ['id_inner5stacked_set-0-dummy', 'id_inner5tabular_set-0-dummy']
show_links = self.selenium.find_elements_by_link_text('SHOW')
for show_index, field_name in enumerate(fields):
show_links[show_index].click()
self.wait_until_visible('#' + field_name)
self.selenium.find_element_by_id(field_name).send_keys(1)
# Before save all inputs have default border
for inline in ('stacked', 'tabular'):
for field_name in ('name', 'select', 'text'):
element_id = 'id_inner5%s_set-0-%s' % (inline, field_name)
self.assertBorder(
self.selenium.find_element_by_id(element_id),
'1px solid #cccccc',
)
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
# Test the red border around inputs by css selectors
stacked_selectors = ['.errors input', '.errors select', '.errors textarea']
for selector in stacked_selectors:
self.assertBorder(
self.selenium.find_element_by_css_selector(selector),
'1px solid #ba2121',
)
tabular_selectors = [
'td ul.errorlist + input', 'td ul.errorlist + select', 'td ul.errorlist + textarea'
]
for selector in tabular_selectors:
self.assertBorder(
self.selenium.find_element_by_css_selector(selector),
'1px solid #ba2121',
)
def test_inline_formset_error(self):
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder5_add'))
stacked_inline_formset_selector = 'div#inner5stacked_set-group fieldset.module.collapse'
tabular_inline_formset_selector = 'div#inner5tabular_set-group fieldset.module.collapse'
# Inlines without errors, both inlines collapsed
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(stacked_inline_formset_selector + '.collapsed')), 1
)
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(tabular_inline_formset_selector + '.collapsed')), 1
)
show_links = self.selenium.find_elements_by_link_text('SHOW')
self.assertEqual(len(show_links), 2)
# Inlines with errors, both inlines expanded
test_fields = ['#id_inner5stacked_set-0-dummy', '#id_inner5tabular_set-0-dummy']
for show_index, field_name in enumerate(test_fields):
show_links[show_index].click()
self.wait_until_visible(field_name)
self.selenium.find_element_by_id(field_name[1:]).send_keys(1)
hide_links = self.selenium.find_elements_by_link_text('HIDE')
self.assertEqual(len(hide_links), 2)
for hide_index, field_name in enumerate(test_fields):
hide_link = hide_links[hide_index]
self.selenium.execute_script('window.scrollTo(0, %s);' % hide_link.location['y'])
hide_link.click()
self.wait_until_invisible(field_name)
self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(stacked_inline_formset_selector + '.collapsed')), 0
)
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(tabular_inline_formset_selector + '.collapsed')), 0
)
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(stacked_inline_formset_selector)), 1
)
self.assertEqual(
len(self.selenium.find_elements_by_css_selector(tabular_inline_formset_selector)), 1
)
def test_inlines_verbose_name(self):
"""
The item added by the "Add another XXX" link must use the correct
verbose_name in the inline form.
"""
self.admin_login(username='super', password='secret')
# Hide sidebar.
self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_course_add'))
toggle_button = self.selenium.find_element_by_css_selector('#toggle-nav-sidebar')
toggle_button.click()
# Each combination of horizontal/vertical filter with stacked/tabular
# inlines.
tests = [
'admin:admin_inlines_course_add',
'admin:admin_inlines_courseproxy_add',
'admin:admin_inlines_courseproxy1_add',
'admin:admin_inlines_courseproxy2_add',
]
css_selector = '.dynamic-class_set#class_set-%s h2'
for url_name in tests:
with self.subTest(url=url_name):
self.selenium.get(self.live_server_url + reverse(url_name))
# First inline shows the verbose_name.
available, chosen = self.selenium.find_elements_by_css_selector(css_selector % 0)
self.assertEqual(available.text, 'AVAILABLE ATTENDANT')
self.assertEqual(chosen.text, 'CHOSEN ATTENDANT')
# Added inline should also have the correct verbose_name.
self.selenium.find_element_by_link_text('Add another Class').click()
available, chosen = self.selenium.find_elements_by_css_selector(css_selector % 1)
self.assertEqual(available.text, 'AVAILABLE ATTENDANT')
self.assertEqual(chosen.text, 'CHOSEN ATTENDANT')
# Third inline should also have the correct verbose_name.
self.selenium.find_element_by_link_text('Add another Class').click()
available, chosen = self.selenium.find_elements_by_css_selector(css_selector % 2)
self.assertEqual(available.text, 'AVAILABLE ATTENDANT')
self.assertEqual(chosen.text, 'CHOSEN ATTENDANT')
|
87ff9f27ecffc8d144547f4860226a7fb43a4baaf7a7f1a7b5d7449e06e3e343 | """
Testing of admin inline formsets.
"""
import random
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.db import models
class Parent(models.Model):
name = models.CharField(max_length=50)
def __str__(self):
return self.name
class Teacher(models.Model):
name = models.CharField(max_length=50)
def __str__(self):
return self.name
class Child(models.Model):
name = models.CharField(max_length=50)
teacher = models.ForeignKey(Teacher, models.CASCADE)
content_type = models.ForeignKey(ContentType, models.CASCADE)
object_id = models.PositiveIntegerField()
parent = GenericForeignKey()
def __str__(self):
return 'I am %s, a child of %s' % (self.name, self.parent)
class Book(models.Model):
name = models.CharField(max_length=50)
def __str__(self):
return self.name
class Author(models.Model):
name = models.CharField(max_length=50)
books = models.ManyToManyField(Book)
person = models.OneToOneField('Person', models.CASCADE, null=True)
class NonAutoPKBook(models.Model):
rand_pk = models.IntegerField(primary_key=True, editable=False)
author = models.ForeignKey(Author, models.CASCADE)
title = models.CharField(max_length=50)
def save(self, *args, **kwargs):
while not self.rand_pk:
test_pk = random.randint(1, 99999)
if not NonAutoPKBook.objects.filter(rand_pk=test_pk).exists():
self.rand_pk = test_pk
super().save(*args, **kwargs)
class NonAutoPKBookChild(NonAutoPKBook):
pass
class EditablePKBook(models.Model):
manual_pk = models.IntegerField(primary_key=True)
author = models.ForeignKey(Author, models.CASCADE)
title = models.CharField(max_length=50)
class Holder(models.Model):
dummy = models.IntegerField()
class Inner(models.Model):
dummy = models.IntegerField()
holder = models.ForeignKey(Holder, models.CASCADE)
readonly = models.CharField("Inner readonly label", max_length=1)
def get_absolute_url(self):
return '/inner/'
class Holder2(models.Model):
dummy = models.IntegerField()
class Inner2(models.Model):
dummy = models.IntegerField()
holder = models.ForeignKey(Holder2, models.CASCADE)
class Holder3(models.Model):
dummy = models.IntegerField()
class Inner3(models.Model):
dummy = models.IntegerField()
holder = models.ForeignKey(Holder3, models.CASCADE)
# Models for ticket #8190
class Holder4(models.Model):
dummy = models.IntegerField()
class Inner4Stacked(models.Model):
dummy = models.IntegerField(help_text="Awesome stacked help text is awesome.")
holder = models.ForeignKey(Holder4, models.CASCADE)
class Meta:
constraints = [
models.UniqueConstraint(fields=['dummy', 'holder'], name='unique_stacked_dummy_per_holder')
]
class Inner4Tabular(models.Model):
dummy = models.IntegerField(help_text="Awesome tabular help text is awesome.")
holder = models.ForeignKey(Holder4, models.CASCADE)
class Meta:
constraints = [
models.UniqueConstraint(fields=['dummy', 'holder'], name='unique_tabular_dummy_per_holder')
]
# Models for ticket #31441
class Holder5(models.Model):
dummy = models.IntegerField()
class Inner5Stacked(models.Model):
name = models.CharField(max_length=10)
select = models.CharField(choices=(('1', 'One'), ('2', 'Two')), max_length=10)
text = models.TextField()
dummy = models.IntegerField()
holder = models.ForeignKey(Holder5, models.CASCADE)
class Inner5Tabular(models.Model):
name = models.CharField(max_length=10)
select = models.CharField(choices=(('1', 'One'), ('2', 'Two')), max_length=10)
text = models.TextField()
dummy = models.IntegerField()
holder = models.ForeignKey(Holder5, models.CASCADE)
# Models for #12749
class Person(models.Model):
firstname = models.CharField(max_length=15)
class OutfitItem(models.Model):
name = models.CharField(max_length=15)
class Fashionista(models.Model):
person = models.OneToOneField(Person, models.CASCADE, primary_key=True)
weaknesses = models.ManyToManyField(OutfitItem, through='ShoppingWeakness', blank=True)
class ShoppingWeakness(models.Model):
fashionista = models.ForeignKey(Fashionista, models.CASCADE)
item = models.ForeignKey(OutfitItem, models.CASCADE)
# Models for #13510
class TitleCollection(models.Model):
pass
class Title(models.Model):
collection = models.ForeignKey(TitleCollection, models.SET_NULL, blank=True, null=True)
title1 = models.CharField(max_length=100)
title2 = models.CharField(max_length=100)
# Models for #15424
class Poll(models.Model):
name = models.CharField(max_length=40)
class Question(models.Model):
text = models.CharField(max_length=40)
poll = models.ForeignKey(Poll, models.CASCADE)
class Novel(models.Model):
name = models.CharField(max_length=40)
class NovelReadonlyChapter(Novel):
class Meta:
proxy = True
class Chapter(models.Model):
name = models.CharField(max_length=40)
novel = models.ForeignKey(Novel, models.CASCADE)
class FootNote(models.Model):
"""
Model added for ticket 19838
"""
chapter = models.ForeignKey(Chapter, models.PROTECT)
note = models.CharField(max_length=40)
# Models for #16838
class CapoFamiglia(models.Model):
name = models.CharField(max_length=100)
class Consigliere(models.Model):
name = models.CharField(max_length=100, help_text='Help text for Consigliere')
capo_famiglia = models.ForeignKey(CapoFamiglia, models.CASCADE, related_name='+')
class SottoCapo(models.Model):
name = models.CharField(max_length=100)
capo_famiglia = models.ForeignKey(CapoFamiglia, models.CASCADE, related_name='+')
class ReadOnlyInline(models.Model):
name = models.CharField(max_length=100, help_text='Help text for ReadOnlyInline')
capo_famiglia = models.ForeignKey(CapoFamiglia, models.CASCADE)
# Models for #18433
class ParentModelWithCustomPk(models.Model):
my_own_pk = models.CharField(max_length=100, primary_key=True)
name = models.CharField(max_length=100)
class ChildModel1(models.Model):
my_own_pk = models.CharField(max_length=100, primary_key=True)
name = models.CharField(max_length=100)
parent = models.ForeignKey(ParentModelWithCustomPk, models.CASCADE)
def get_absolute_url(self):
return '/child_model1/'
class ChildModel2(models.Model):
my_own_pk = models.CharField(max_length=100, primary_key=True)
name = models.CharField(max_length=100)
parent = models.ForeignKey(ParentModelWithCustomPk, models.CASCADE)
def get_absolute_url(self):
return '/child_model2/'
# Models for #19425
class BinaryTree(models.Model):
name = models.CharField(max_length=100)
parent = models.ForeignKey('self', models.SET_NULL, null=True, blank=True)
# Models for #19524
class LifeForm(models.Model):
pass
class ExtraTerrestrial(LifeForm):
name = models.CharField(max_length=100)
class Sighting(models.Model):
et = models.ForeignKey(ExtraTerrestrial, models.CASCADE)
place = models.CharField(max_length=100)
# Models for #18263
class SomeParentModel(models.Model):
name = models.CharField(max_length=1)
class SomeChildModel(models.Model):
name = models.CharField(max_length=1)
position = models.PositiveIntegerField()
parent = models.ForeignKey(SomeParentModel, models.CASCADE)
readonly_field = models.CharField(max_length=1)
# Models for #30231
class Course(models.Model):
name = models.CharField(max_length=128)
def __str__(self):
return self.name
class Class(models.Model):
person = models.ManyToManyField(Person, verbose_name='attendant')
course = models.ForeignKey(Course, on_delete=models.CASCADE)
class CourseProxy(Course):
class Meta:
proxy = True
class CourseProxy1(Course):
class Meta:
proxy = True
class CourseProxy2(Course):
class Meta:
proxy = True
# Other models
class ProfileCollection(models.Model):
pass
class Profile(models.Model):
collection = models.ForeignKey(ProfileCollection, models.SET_NULL, blank=True, null=True)
first_name = models.CharField(max_length=100)
last_name = models.CharField(max_length=100)
class VerboseNameProfile(Profile):
class Meta:
verbose_name = 'Model with verbose name only'
class VerboseNamePluralProfile(Profile):
class Meta:
verbose_name_plural = 'Model with verbose name plural only'
class BothVerboseNameProfile(Profile):
class Meta:
verbose_name = 'Model with both - name'
verbose_name_plural = 'Model with both - plural name'
|
9177791550cae4310c437a2f1b4cd29500d4aa8e2773784503d5449c82a1c8f4 | from django import forms
from django.contrib import admin
from django.core.exceptions import ValidationError
from django.db import models
from .models import (
Author, BinaryTree, CapoFamiglia, Chapter, Child, ChildModel1, ChildModel2,
Class, Consigliere, Course, CourseProxy, CourseProxy1, CourseProxy2,
EditablePKBook, ExtraTerrestrial, Fashionista, FootNote, Holder, Holder2,
Holder3, Holder4, Holder5, Inner, Inner2, Inner3, Inner4Stacked,
Inner4Tabular, Inner5Stacked, Inner5Tabular, NonAutoPKBook,
NonAutoPKBookChild, Novel, NovelReadonlyChapter, OutfitItem,
ParentModelWithCustomPk, Person, Poll, Profile, ProfileCollection,
Question, ReadOnlyInline, ShoppingWeakness, Sighting, SomeChildModel,
SomeParentModel, SottoCapo, Teacher, Title, TitleCollection,
)
site = admin.AdminSite(name="admin")
class BookInline(admin.TabularInline):
model = Author.books.through
class NonAutoPKBookTabularInline(admin.TabularInline):
model = NonAutoPKBook
classes = ('collapse',)
class NonAutoPKBookChildTabularInline(admin.TabularInline):
model = NonAutoPKBookChild
classes = ('collapse',)
class NonAutoPKBookStackedInline(admin.StackedInline):
model = NonAutoPKBook
classes = ('collapse',)
class EditablePKBookTabularInline(admin.TabularInline):
model = EditablePKBook
class EditablePKBookStackedInline(admin.StackedInline):
model = EditablePKBook
class AuthorAdmin(admin.ModelAdmin):
inlines = [
BookInline, NonAutoPKBookTabularInline, NonAutoPKBookStackedInline,
EditablePKBookTabularInline, EditablePKBookStackedInline,
NonAutoPKBookChildTabularInline,
]
class InnerInline(admin.StackedInline):
model = Inner
can_delete = False
readonly_fields = ('readonly',) # For bug #13174 tests.
class HolderAdmin(admin.ModelAdmin):
class Media:
js = ('my_awesome_admin_scripts.js',)
class ReadOnlyInlineInline(admin.TabularInline):
model = ReadOnlyInline
readonly_fields = ['name']
class InnerInline2(admin.StackedInline):
model = Inner2
class Media:
js = ('my_awesome_inline_scripts.js',)
class InnerInline2Tabular(admin.TabularInline):
model = Inner2
class CustomNumberWidget(forms.NumberInput):
class Media:
js = ('custom_number.js',)
class InnerInline3(admin.StackedInline):
model = Inner3
formfield_overrides = {
models.IntegerField: {'widget': CustomNumberWidget},
}
class Media:
js = ('my_awesome_inline_scripts.js',)
class TitleForm(forms.ModelForm):
title1 = forms.CharField(max_length=100)
def clean(self):
cleaned_data = self.cleaned_data
title1 = cleaned_data.get("title1")
title2 = cleaned_data.get("title2")
if title1 != title2:
raise ValidationError("The two titles must be the same")
return cleaned_data
class TitleInline(admin.TabularInline):
model = Title
form = TitleForm
extra = 1
class Inner4StackedInline(admin.StackedInline):
model = Inner4Stacked
show_change_link = True
class Inner4TabularInline(admin.TabularInline):
model = Inner4Tabular
show_change_link = True
class Holder4Admin(admin.ModelAdmin):
inlines = [Inner4StackedInline, Inner4TabularInline]
class Inner5StackedInline(admin.StackedInline):
model = Inner5Stacked
classes = ('collapse',)
class Inner5TabularInline(admin.TabularInline):
model = Inner5Tabular
classes = ('collapse',)
class Holder5Admin(admin.ModelAdmin):
inlines = [Inner5StackedInline, Inner5TabularInline]
class InlineWeakness(admin.TabularInline):
model = ShoppingWeakness
extra = 1
class WeaknessForm(forms.ModelForm):
extra_field = forms.CharField()
class Meta:
model = ShoppingWeakness
fields = '__all__'
class WeaknessInlineCustomForm(admin.TabularInline):
model = ShoppingWeakness
form = WeaknessForm
class FootNoteForm(forms.ModelForm):
extra_field = forms.CharField()
class Meta:
model = FootNote
fields = '__all__'
class FootNoteNonEditableInlineCustomForm(admin.TabularInline):
model = FootNote
form = FootNoteForm
def has_change_permission(self, request, obj=None):
return False
class QuestionInline(admin.TabularInline):
model = Question
readonly_fields = ['call_me']
def call_me(self, obj):
return 'Callable in QuestionInline'
class PollAdmin(admin.ModelAdmin):
inlines = [QuestionInline]
def call_me(self, obj):
return 'Callable in PollAdmin'
class ChapterInline(admin.TabularInline):
model = Chapter
readonly_fields = ['call_me']
def call_me(self, obj):
return 'Callable in ChapterInline'
class NovelAdmin(admin.ModelAdmin):
inlines = [ChapterInline]
class ReadOnlyChapterInline(admin.TabularInline):
model = Chapter
def has_change_permission(self, request, obj=None):
return False
class NovelReadonlyChapterAdmin(admin.ModelAdmin):
inlines = [ReadOnlyChapterInline]
class ConsigliereInline(admin.TabularInline):
model = Consigliere
class SottoCapoInline(admin.TabularInline):
model = SottoCapo
class ProfileInline(admin.TabularInline):
model = Profile
extra = 1
# admin for #18433
class ChildModel1Inline(admin.TabularInline):
model = ChildModel1
class ChildModel2Inline(admin.StackedInline):
model = ChildModel2
# admin for #19425 and #18388
class BinaryTreeAdmin(admin.TabularInline):
model = BinaryTree
def get_extra(self, request, obj=None, **kwargs):
extra = 2
if obj:
return extra - obj.binarytree_set.count()
return extra
def get_max_num(self, request, obj=None, **kwargs):
max_num = 3
if obj:
return max_num - obj.binarytree_set.count()
return max_num
# admin for #19524
class SightingInline(admin.TabularInline):
model = Sighting
# admin and form for #18263
class SomeChildModelForm(forms.ModelForm):
class Meta:
fields = '__all__'
model = SomeChildModel
widgets = {
'position': forms.HiddenInput,
}
labels = {'readonly_field': 'Label from ModelForm.Meta'}
help_texts = {'readonly_field': 'Help text from ModelForm.Meta'}
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['name'].label = 'new label'
class SomeChildModelInline(admin.TabularInline):
model = SomeChildModel
form = SomeChildModelForm
readonly_fields = ('readonly_field',)
class StudentInline(admin.StackedInline):
model = Child
extra = 1
fieldsets = [
('Name', {'fields': ('name',), 'classes': ('collapse',)}),
]
class TeacherAdmin(admin.ModelAdmin):
inlines = [StudentInline]
class AuthorTabularInline(admin.TabularInline):
model = Author
class FashonistaStackedInline(admin.StackedInline):
model = Fashionista
# Admin for #30231
class ClassStackedHorizontal(admin.StackedInline):
model = Class
extra = 1
filter_horizontal = ['person']
class ClassAdminStackedHorizontal(admin.ModelAdmin):
inlines = [ClassStackedHorizontal]
class ClassTabularHorizontal(admin.TabularInline):
model = Class
extra = 1
filter_horizontal = ['person']
class ClassAdminTabularHorizontal(admin.ModelAdmin):
inlines = [ClassTabularHorizontal]
class ClassTabularVertical(admin.TabularInline):
model = Class
extra = 1
filter_vertical = ['person']
class ClassAdminTabularVertical(admin.ModelAdmin):
inlines = [ClassTabularVertical]
class ClassStackedVertical(admin.StackedInline):
model = Class
extra = 1
filter_vertical = ['person']
class ClassAdminStackedVertical(admin.ModelAdmin):
inlines = [ClassStackedVertical]
class ChildHiddenFieldForm(forms.ModelForm):
class Meta:
model = SomeChildModel
fields = ['name', 'position', 'parent']
widgets = {'position': forms.HiddenInput}
def _post_clean(self):
super()._post_clean()
if self.instance is not None and self.instance.position == 1:
self.add_error(None, ValidationError('A non-field error'))
class ChildHiddenFieldTabularInline(admin.TabularInline):
model = SomeChildModel
form = ChildHiddenFieldForm
class ChildHiddenFieldInFieldsGroupStackedInline(admin.StackedInline):
model = SomeChildModel
form = ChildHiddenFieldForm
fields = [('name', 'position')]
class ChildHiddenFieldOnSingleLineStackedInline(admin.StackedInline):
model = SomeChildModel
form = ChildHiddenFieldForm
fields = ('name', 'position')
site.register(TitleCollection, inlines=[TitleInline])
# Test bug #12561 and #12778
# only ModelAdmin media
site.register(Holder, HolderAdmin, inlines=[InnerInline])
# ModelAdmin and Inline media
site.register(Holder2, HolderAdmin, inlines=[InnerInline2, InnerInline2Tabular])
# only Inline media
site.register(Holder3, inlines=[InnerInline3])
site.register(Poll, PollAdmin)
site.register(Novel, NovelAdmin)
site.register(NovelReadonlyChapter, NovelReadonlyChapterAdmin)
site.register(Fashionista, inlines=[InlineWeakness])
site.register(Holder4, Holder4Admin)
site.register(Holder5, Holder5Admin)
site.register(Author, AuthorAdmin)
site.register(CapoFamiglia, inlines=[ConsigliereInline, SottoCapoInline, ReadOnlyInlineInline])
site.register(ProfileCollection, inlines=[ProfileInline])
site.register(ParentModelWithCustomPk, inlines=[ChildModel1Inline, ChildModel2Inline])
site.register(BinaryTree, inlines=[BinaryTreeAdmin])
site.register(ExtraTerrestrial, inlines=[SightingInline])
site.register(SomeParentModel, inlines=[SomeChildModelInline])
site.register([Question, Inner4Stacked, Inner4Tabular])
site.register(Teacher, TeacherAdmin)
site.register(Chapter, inlines=[FootNoteNonEditableInlineCustomForm])
site.register(OutfitItem, inlines=[WeaknessInlineCustomForm])
site.register(Person, inlines=[AuthorTabularInline, FashonistaStackedInline])
site.register(Course, ClassAdminStackedHorizontal)
site.register(CourseProxy, ClassAdminStackedVertical)
site.register(CourseProxy1, ClassAdminTabularVertical)
site.register(CourseProxy2, ClassAdminTabularHorizontal)
# Used to test hidden fields in tabular and stacked inlines.
site2 = admin.AdminSite(name='tabular_inline_hidden_field_admin')
site2.register(SomeParentModel, inlines=[ChildHiddenFieldTabularInline])
site3 = admin.AdminSite(name='stacked_inline_hidden_field_in_group_admin')
site3.register(SomeParentModel, inlines=[ChildHiddenFieldInFieldsGroupStackedInline])
site4 = admin.AdminSite(name='stacked_inline_hidden_field_on_single_line_admin')
site4.register(SomeParentModel, inlines=[ChildHiddenFieldOnSingleLineStackedInline])
|
6ab1f532bda331bf7464599d12d4727b38a0f7989cf115ce65aa5fbd69007233 | """
A series of tests to establish that the command-line management tools work as
advertised - especially with regards to the handling of the
DJANGO_SETTINGS_MODULE and default settings.py files.
"""
import os
import re
import shutil
import socket
import subprocess
import sys
import tempfile
import unittest
from io import StringIO
from unittest import mock
from django import conf, get_version
from django.conf import settings
from django.core.management import (
BaseCommand, CommandError, call_command, color, execute_from_command_line,
)
from django.core.management.commands.loaddata import Command as LoaddataCommand
from django.core.management.commands.runserver import (
Command as RunserverCommand,
)
from django.core.management.commands.testserver import (
Command as TestserverCommand,
)
from django.db import ConnectionHandler, connection
from django.db.migrations.recorder import MigrationRecorder
from django.test import (
LiveServerTestCase, SimpleTestCase, TestCase, override_settings,
)
from django.test.utils import captured_stderr, captured_stdout
custom_templates_dir = os.path.join(os.path.dirname(__file__), 'custom_templates')
SYSTEM_CHECK_MSG = 'System check identified no issues'
class AdminScriptTestCase(SimpleTestCase):
def setUp(self):
tmpdir = tempfile.TemporaryDirectory()
self.addCleanup(tmpdir.cleanup)
# os.path.realpath() is required for temporary directories on macOS,
# where `/var` is a symlink to `/private/var`.
self.test_dir = os.path.realpath(os.path.join(tmpdir.name, 'test_project'))
os.mkdir(self.test_dir)
def write_settings(self, filename, apps=None, is_dir=False, sdict=None, extra=None):
if is_dir:
settings_dir = os.path.join(self.test_dir, filename)
os.mkdir(settings_dir)
settings_file_path = os.path.join(settings_dir, '__init__.py')
else:
settings_file_path = os.path.join(self.test_dir, filename)
with open(settings_file_path, 'w') as settings_file:
settings_file.write('# Settings file automatically generated by admin_scripts test case\n')
if extra:
settings_file.write("%s\n" % extra)
exports = [
'DATABASES',
'DEFAULT_AUTO_FIELD',
'ROOT_URLCONF',
'SECRET_KEY',
'USE_TZ',
]
for s in exports:
if hasattr(settings, s):
o = getattr(settings, s)
if not isinstance(o, (dict, tuple, list)):
o = "'%s'" % o
settings_file.write("%s = %s\n" % (s, o))
if apps is None:
apps = ['django.contrib.auth', 'django.contrib.contenttypes', 'admin_scripts']
settings_file.write("INSTALLED_APPS = %s\n" % apps)
if sdict:
for k, v in sdict.items():
settings_file.write("%s = %s\n" % (k, v))
def _ext_backend_paths(self):
"""
Returns the paths for any external backend packages.
"""
paths = []
for backend in settings.DATABASES.values():
package = backend['ENGINE'].split('.')[0]
if package != 'django':
backend_pkg = __import__(package)
backend_dir = os.path.dirname(backend_pkg.__file__)
paths.append(os.path.dirname(backend_dir))
return paths
def run_test(self, args, settings_file=None, apps=None):
base_dir = os.path.dirname(self.test_dir)
# The base dir for Django's tests is one level up.
tests_dir = os.path.dirname(os.path.dirname(__file__))
# The base dir for Django is one level above the test dir. We don't use
# `import django` to figure that out, so we don't pick up a Django
# from site-packages or similar.
django_dir = os.path.dirname(tests_dir)
ext_backend_base_dirs = self._ext_backend_paths()
# Define a temporary environment for the subprocess
test_environ = os.environ.copy()
# Set the test environment
if settings_file:
test_environ['DJANGO_SETTINGS_MODULE'] = settings_file
elif 'DJANGO_SETTINGS_MODULE' in test_environ:
del test_environ['DJANGO_SETTINGS_MODULE']
python_path = [base_dir, django_dir, tests_dir]
python_path.extend(ext_backend_base_dirs)
test_environ['PYTHONPATH'] = os.pathsep.join(python_path)
test_environ['PYTHONWARNINGS'] = ''
p = subprocess.run(
[sys.executable, *args],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
cwd=self.test_dir,
env=test_environ, universal_newlines=True,
)
return p.stdout, p.stderr
def run_django_admin(self, args, settings_file=None):
return self.run_test(['-m', 'django', *args], settings_file)
def run_manage(self, args, settings_file=None, manage_py=None):
template_manage_py = (
os.path.join(os.path.dirname(__file__), manage_py)
if manage_py else
os.path.join(os.path.dirname(conf.__file__), 'project_template', 'manage.py-tpl')
)
test_manage_py = os.path.join(self.test_dir, 'manage.py')
shutil.copyfile(template_manage_py, test_manage_py)
with open(test_manage_py) as fp:
manage_py_contents = fp.read()
manage_py_contents = manage_py_contents.replace(
"{{ project_name }}", "test_project")
with open(test_manage_py, 'w') as fp:
fp.write(manage_py_contents)
return self.run_test(['./manage.py', *args], settings_file)
def assertNoOutput(self, stream):
"Utility assertion: assert that the given stream is empty"
self.assertEqual(len(stream), 0, "Stream should be empty: actually contains '%s'" % stream)
def assertOutput(self, stream, msg, regex=False):
"Utility assertion: assert that the given message exists in the output"
if regex:
self.assertIsNotNone(
re.search(msg, stream),
"'%s' does not match actual output text '%s'" % (msg, stream)
)
else:
self.assertIn(msg, stream, "'%s' does not match actual output text '%s'" % (msg, stream))
def assertNotInOutput(self, stream, msg):
"Utility assertion: assert that the given message doesn't exist in the output"
self.assertNotIn(msg, stream, "'%s' matches actual output text '%s'" % (msg, stream))
##########################################################################
# DJANGO ADMIN TESTS
# This first series of test classes checks the environment processing
# of the django-admin.
##########################################################################
class DjangoAdminNoSettings(AdminScriptTestCase):
"A series of tests for django-admin when there is no settings.py file."
def test_builtin_command(self):
"no settings: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_bad_settings(self):
"no settings: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"no settings: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_commands_with_invalid_settings(self):
"""
Commands that don't require settings succeed if the settings file
doesn't exist.
"""
args = ['startproject']
out, err = self.run_django_admin(args, settings_file='bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "You must provide a project name", regex=True)
class DjangoAdminDefaultSettings(AdminScriptTestCase):
"""
A series of tests for django-admin when using a settings.py file that
contains the test application.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py')
def test_builtin_command(self):
"default: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_settings(self):
"default: django-admin builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"default: django-admin builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"default: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"default: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"default: django-admin can't execute user commands if it isn't provided settings"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"default: django-admin can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"default: django-admin can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class DjangoAdminFullPathDefaultSettings(AdminScriptTestCase):
"""
A series of tests for django-admin when using a settings.py file that
contains the test application specified using a full path.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', ['django.contrib.auth', 'django.contrib.contenttypes',
'admin_scripts', 'admin_scripts.complex_app'])
def test_builtin_command(self):
"fulldefault: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_settings(self):
"fulldefault: django-admin builtin commands succeed if a settings file is provided"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"fulldefault: django-admin builtin commands succeed if the environment contains settings"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"fulldefault: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"fulldefault: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"fulldefault: django-admin can't execute user commands unless settings are provided"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"fulldefault: django-admin can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"fulldefault: django-admin can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class DjangoAdminMinimalSettings(AdminScriptTestCase):
"""
A series of tests for django-admin when using a settings.py file that
doesn't contain the test application.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', apps=['django.contrib.auth', 'django.contrib.contenttypes'])
def test_builtin_command(self):
"minimal: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_settings(self):
"minimal: django-admin builtin commands fail if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_environment(self):
"minimal: django-admin builtin commands fail if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_bad_settings(self):
"minimal: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"minimal: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"minimal: django-admin can't execute user commands unless settings are provided"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"minimal: django-admin can't execute user commands, even if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_environment(self):
"minimal: django-admin can't execute user commands, even if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
class DjangoAdminAlternateSettings(AdminScriptTestCase):
"""
A series of tests for django-admin when using a settings file with a name
other than 'settings.py'.
"""
def setUp(self):
super().setUp()
self.write_settings('alternate_settings.py')
def test_builtin_command(self):
"alternate: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_settings(self):
"alternate: django-admin builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.alternate_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"alternate: django-admin builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"alternate: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"alternate: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"alternate: django-admin can't execute user commands unless settings are provided"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"alternate: django-admin can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.alternate_settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"alternate: django-admin can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_django_admin(args, 'test_project.alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class DjangoAdminMultipleSettings(AdminScriptTestCase):
"""
A series of tests for django-admin when multiple settings files
(including the default 'settings.py') are available. The default settings
file is insufficient for performing the operations described, so the
alternate settings must be used by the running script.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', apps=['django.contrib.auth', 'django.contrib.contenttypes'])
self.write_settings('alternate_settings.py')
def test_builtin_command(self):
"alternate: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_settings(self):
"alternate: django-admin builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.alternate_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"alternate: django-admin builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"alternate: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"alternate: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"alternate: django-admin can't execute user commands unless settings are provided"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"alternate: django-admin can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.alternate_settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"alternate: django-admin can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_django_admin(args, 'test_project.alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class DjangoAdminSettingsDirectory(AdminScriptTestCase):
"""
A series of tests for django-admin when the settings file is in a
directory. (see #9751).
"""
def setUp(self):
super().setUp()
self.write_settings('settings', is_dir=True)
def test_setup_environ(self):
"directory: startapp creates the correct directory"
args = ['startapp', 'settings_test']
app_path = os.path.join(self.test_dir, 'settings_test')
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertTrue(os.path.exists(app_path))
with open(os.path.join(app_path, 'apps.py')) as f:
content = f.read()
self.assertIn("class SettingsTestConfig(AppConfig)", content)
self.assertIn("name = 'settings_test'", content)
def test_setup_environ_custom_template(self):
"directory: startapp creates the correct directory with a custom template"
template_path = os.path.join(custom_templates_dir, 'app_template')
args = ['startapp', '--template', template_path, 'custom_settings_test']
app_path = os.path.join(self.test_dir, 'custom_settings_test')
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertTrue(os.path.exists(app_path))
self.assertTrue(os.path.exists(os.path.join(app_path, 'api.py')))
def test_startapp_unicode_name(self):
"""startapp creates the correct directory with Unicode characters."""
args = ['startapp', 'こんにちは']
app_path = os.path.join(self.test_dir, 'こんにちは')
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertTrue(os.path.exists(app_path))
with open(os.path.join(app_path, 'apps.py'), encoding='utf8') as f:
content = f.read()
self.assertIn("class こんにちはConfig(AppConfig)", content)
self.assertIn("name = 'こんにちは'", content)
def test_builtin_command(self):
"directory: django-admin builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, 'settings are not configured')
def test_builtin_with_bad_settings(self):
"directory: django-admin builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"directory: django-admin builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"directory: django-admin can't execute user commands unless settings are provided"
args = ['noargs_command']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "No Django settings specified")
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_builtin_with_settings(self):
"directory: django-admin builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"directory: django-admin builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_django_admin(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
##########################################################################
# MANAGE.PY TESTS
# This next series of test classes checks the environment processing
# of the generated manage.py script
##########################################################################
class ManageManuallyConfiguredSettings(AdminScriptTestCase):
"""Customized manage.py calling settings.configure()."""
def test_non_existent_command_output(self):
out, err = self.run_manage(['invalid_command'], manage_py='configured_settings_manage.py')
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'invalid_command'")
self.assertNotInOutput(err, 'No Django settings specified')
class ManageNoSettings(AdminScriptTestCase):
"A series of tests for manage.py when there is no settings.py file."
def test_builtin_command(self):
"no settings: manage.py builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, r"No module named '?(test_project\.)?settings'?", regex=True)
def test_builtin_with_bad_settings(self):
"no settings: manage.py builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"no settings: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
class ManageDefaultSettings(AdminScriptTestCase):
"""A series of tests for manage.py when using a settings.py file that
contains the test application.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py')
def test_builtin_command(self):
"default: manage.py builtin commands succeed when default settings are appropriate"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_settings(self):
"default: manage.py builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"default: manage.py builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"default: manage.py builtin commands succeed if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"default: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"default: manage.py can execute user commands when default settings are appropriate"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_settings(self):
"default: manage.py can execute user commands when settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"default: manage.py can execute user commands when settings are provided in environment"
args = ['noargs_command']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class ManageFullPathDefaultSettings(AdminScriptTestCase):
"""A series of tests for manage.py when using a settings.py file that
contains the test application specified using a full path.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', ['django.contrib.auth', 'django.contrib.contenttypes', 'admin_scripts'])
def test_builtin_command(self):
"fulldefault: manage.py builtin commands succeed when default settings are appropriate"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_settings(self):
"fulldefault: manage.py builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"fulldefault: manage.py builtin commands succeed if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"fulldefault: manage.py builtin commands succeed if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"fulldefault: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"fulldefault: manage.py can execute user commands when default settings are appropriate"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_settings(self):
"fulldefault: manage.py can execute user commands when settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"fulldefault: manage.py can execute user commands when settings are provided in environment"
args = ['noargs_command']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class ManageMinimalSettings(AdminScriptTestCase):
"""A series of tests for manage.py when using a settings.py file that
doesn't contain the test application.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', apps=['django.contrib.auth', 'django.contrib.contenttypes'])
def test_builtin_command(self):
"minimal: manage.py builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_settings(self):
"minimal: manage.py builtin commands fail if settings are provided as argument"
args = ['check', '--settings=test_project.settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_environment(self):
"minimal: manage.py builtin commands fail if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_bad_settings(self):
"minimal: manage.py builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"minimal: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"minimal: manage.py can't execute user commands without appropriate settings"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"minimal: manage.py can't execute user commands, even if settings are provided as argument"
args = ['noargs_command', '--settings=test_project.settings']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_environment(self):
"minimal: manage.py can't execute user commands, even if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_manage(args, 'test_project.settings')
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
class ManageAlternateSettings(AdminScriptTestCase):
"""A series of tests for manage.py when using a settings file
with a name other than 'settings.py'.
"""
def setUp(self):
super().setUp()
self.write_settings('alternate_settings.py')
def test_builtin_command(self):
"alternate: manage.py builtin commands fail with an error when no default settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, r"No module named '?(test_project\.)?settings'?", regex=True)
def test_builtin_with_settings(self):
"alternate: manage.py builtin commands work with settings provided as argument"
args = ['check', '--settings=alternate_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertOutput(out, SYSTEM_CHECK_MSG)
self.assertNoOutput(err)
def test_builtin_with_environment(self):
"alternate: manage.py builtin commands work if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'alternate_settings')
self.assertOutput(out, SYSTEM_CHECK_MSG)
self.assertNoOutput(err)
def test_builtin_with_bad_settings(self):
"alternate: manage.py builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"alternate: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"alternate: manage.py can't execute user commands without settings"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, r"No module named '?(test_project\.)?settings'?", regex=True)
def test_custom_command_with_settings(self):
"alternate: manage.py can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=alternate_settings']
out, err = self.run_manage(args)
self.assertOutput(
out,
"EXECUTE: noargs_command options=[('force_color', False), "
"('no_color', False), ('pythonpath', None), ('settings', "
"'alternate_settings'), ('traceback', False), ('verbosity', 1)]"
)
self.assertNoOutput(err)
def test_custom_command_with_environment(self):
"alternate: manage.py can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_manage(args, 'alternate_settings')
self.assertOutput(
out,
"EXECUTE: noargs_command options=[('force_color', False), "
"('no_color', False), ('pythonpath', None), ('settings', None), "
"('traceback', False), ('verbosity', 1)]"
)
self.assertNoOutput(err)
def test_custom_command_output_color(self):
"alternate: manage.py output syntax color can be deactivated with the `--no-color` option"
args = ['noargs_command', '--no-color', '--settings=alternate_settings']
out, err = self.run_manage(args)
self.assertOutput(
out,
"EXECUTE: noargs_command options=[('force_color', False), "
"('no_color', True), ('pythonpath', None), ('settings', "
"'alternate_settings'), ('traceback', False), ('verbosity', 1)]"
)
self.assertNoOutput(err)
class ManageMultipleSettings(AdminScriptTestCase):
"""A series of tests for manage.py when multiple settings files
(including the default 'settings.py') are available. The default settings
file is insufficient for performing the operations described, so the
alternate settings must be used by the running script.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', apps=['django.contrib.auth', 'django.contrib.contenttypes'])
self.write_settings('alternate_settings.py')
def test_builtin_command(self):
"multiple: manage.py builtin commands fail with an error when no settings provided"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No installed app with label 'admin_scripts'.")
def test_builtin_with_settings(self):
"multiple: manage.py builtin commands succeed if settings are provided as argument"
args = ['check', '--settings=alternate_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_environment(self):
"multiple: manage.py can execute builtin commands if settings are provided in the environment"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, SYSTEM_CHECK_MSG)
def test_builtin_with_bad_settings(self):
"multiple: manage.py builtin commands fail if settings file (from argument) doesn't exist"
args = ['check', '--settings=bad_settings', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_builtin_with_bad_environment(self):
"multiple: manage.py builtin commands fail if settings file (from environment) doesn't exist"
args = ['check', 'admin_scripts']
out, err = self.run_manage(args, 'bad_settings')
self.assertNoOutput(out)
self.assertOutput(err, "No module named '?bad_settings'?", regex=True)
def test_custom_command(self):
"multiple: manage.py can't execute user commands using default settings"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'noargs_command'")
def test_custom_command_with_settings(self):
"multiple: manage.py can execute user commands if settings are provided as argument"
args = ['noargs_command', '--settings=alternate_settings']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
def test_custom_command_with_environment(self):
"multiple: manage.py can execute user commands if settings are provided in environment"
args = ['noargs_command']
out, err = self.run_manage(args, 'alternate_settings')
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE: noargs_command")
class ManageSettingsWithSettingsErrors(AdminScriptTestCase):
"""
Tests for manage.py when using the default settings.py file containing
runtime errors.
"""
def write_settings_with_import_error(self, filename):
settings_file_path = os.path.join(self.test_dir, filename)
with open(settings_file_path, 'w') as settings_file:
settings_file.write('# Settings file automatically generated by admin_scripts test case\n')
settings_file.write('# The next line will cause an import error:\nimport foo42bar\n')
def test_import_error(self):
"""
import error: manage.py builtin commands shows useful diagnostic info
when settings with import errors is provided (#14130).
"""
self.write_settings_with_import_error('settings.py')
args = ['check', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "No module named")
self.assertOutput(err, "foo42bar")
def test_attribute_error(self):
"""
manage.py builtin commands does not swallow attribute error due to bad
settings (#18845).
"""
self.write_settings('settings.py', sdict={'BAD_VAR': 'INSTALLED_APPS.crash'})
args = ['collectstatic', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "AttributeError: 'list' object has no attribute 'crash'")
def test_key_error(self):
self.write_settings('settings.py', sdict={'BAD_VAR': 'DATABASES["blah"]'})
args = ['collectstatic', 'admin_scripts']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "KeyError: 'blah'")
def test_help(self):
"""
Test listing available commands output note when only core commands are
available.
"""
self.write_settings(
'settings.py',
extra='from django.core.exceptions import ImproperlyConfigured\n'
'raise ImproperlyConfigured()',
)
args = ['help']
out, err = self.run_manage(args)
self.assertOutput(out, 'only Django core commands are listed')
self.assertNoOutput(err)
class ManageCheck(AdminScriptTestCase):
def test_nonexistent_app(self):
"""check reports an error on a nonexistent app in INSTALLED_APPS."""
self.write_settings(
'settings.py',
apps=['admin_scriptz.broken_app'],
sdict={'USE_I18N': False},
)
args = ['check']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, 'ModuleNotFoundError')
self.assertOutput(err, 'No module named')
self.assertOutput(err, 'admin_scriptz')
def test_broken_app(self):
""" manage.py check reports an ImportError if an app's models.py
raises one on import """
self.write_settings('settings.py', apps=['admin_scripts.broken_app'])
args = ['check']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, 'ImportError')
def test_complex_app(self):
""" manage.py check does not raise an ImportError validating a
complex app with nested calls to load_app """
self.write_settings(
'settings.py',
apps=[
'admin_scripts.complex_app',
'admin_scripts.simple_app',
'django.contrib.admin.apps.SimpleAdminConfig',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.messages',
],
sdict={
'DEBUG': True,
'MIDDLEWARE': [
'django.contrib.messages.middleware.MessageMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
],
'TEMPLATES': [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
],
}
)
args = ['check']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertEqual(out, 'System check identified no issues (0 silenced).\n')
def test_app_with_import(self):
""" manage.py check does not raise errors when an app imports a base
class that itself has an abstract base. """
self.write_settings(
'settings.py',
apps=[
'admin_scripts.app_with_import',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sites',
],
sdict={'DEBUG': True},
)
args = ['check']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertEqual(out, 'System check identified no issues (0 silenced).\n')
def test_output_format(self):
""" All errors/warnings should be sorted by level and by message. """
self.write_settings(
'settings.py',
apps=[
'admin_scripts.app_raising_messages',
'django.contrib.auth',
'django.contrib.contenttypes',
],
sdict={'DEBUG': True},
)
args = ['check']
out, err = self.run_manage(args)
expected_err = (
"SystemCheckError: System check identified some issues:\n"
"\n"
"ERRORS:\n"
"?: An error\n"
"\tHINT: Error hint\n"
"\n"
"WARNINGS:\n"
"a: Second warning\n"
"obj: First warning\n"
"\tHINT: Hint\n"
"\n"
"System check identified 3 issues (0 silenced).\n"
)
self.assertEqual(err, expected_err)
self.assertNoOutput(out)
def test_warning_does_not_halt(self):
"""
When there are only warnings or less serious messages, then Django
should not prevent user from launching their project, so `check`
command should not raise `CommandError` exception.
In this test we also test output format.
"""
self.write_settings(
'settings.py',
apps=[
'admin_scripts.app_raising_warning',
'django.contrib.auth',
'django.contrib.contenttypes',
],
sdict={'DEBUG': True},
)
args = ['check']
out, err = self.run_manage(args)
expected_err = (
"System check identified some issues:\n" # No "CommandError: " part
"\n"
"WARNINGS:\n"
"?: A warning\n"
"\n"
"System check identified 1 issue (0 silenced).\n"
)
self.assertEqual(err, expected_err)
self.assertNoOutput(out)
class ManageRunserver(SimpleTestCase):
def setUp(self):
def monkey_run(*args, **options):
return
self.output = StringIO()
self.cmd = RunserverCommand(stdout=self.output)
self.cmd.run = monkey_run
def assertServerSettings(self, addr, port, ipv6=False, raw_ipv6=False):
self.assertEqual(self.cmd.addr, addr)
self.assertEqual(self.cmd.port, port)
self.assertEqual(self.cmd.use_ipv6, ipv6)
self.assertEqual(self.cmd._raw_ipv6, raw_ipv6)
def test_runserver_addrport(self):
call_command(self.cmd)
self.assertServerSettings('127.0.0.1', '8000')
call_command(self.cmd, addrport="1.2.3.4:8000")
self.assertServerSettings('1.2.3.4', '8000')
call_command(self.cmd, addrport="7000")
self.assertServerSettings('127.0.0.1', '7000')
@unittest.skipUnless(socket.has_ipv6, "platform doesn't support IPv6")
def test_runner_addrport_ipv6(self):
call_command(self.cmd, addrport="", use_ipv6=True)
self.assertServerSettings('::1', '8000', ipv6=True, raw_ipv6=True)
call_command(self.cmd, addrport="7000", use_ipv6=True)
self.assertServerSettings('::1', '7000', ipv6=True, raw_ipv6=True)
call_command(self.cmd, addrport="[2001:0db8:1234:5678::9]:7000")
self.assertServerSettings('2001:0db8:1234:5678::9', '7000', ipv6=True, raw_ipv6=True)
def test_runner_hostname(self):
call_command(self.cmd, addrport="localhost:8000")
self.assertServerSettings('localhost', '8000')
call_command(self.cmd, addrport="test.domain.local:7000")
self.assertServerSettings('test.domain.local', '7000')
@unittest.skipUnless(socket.has_ipv6, "platform doesn't support IPv6")
def test_runner_hostname_ipv6(self):
call_command(self.cmd, addrport="test.domain.local:7000", use_ipv6=True)
self.assertServerSettings('test.domain.local', '7000', ipv6=True)
def test_runner_custom_defaults(self):
self.cmd.default_addr = '0.0.0.0'
self.cmd.default_port = '5000'
call_command(self.cmd)
self.assertServerSettings('0.0.0.0', '5000')
@unittest.skipUnless(socket.has_ipv6, "platform doesn't support IPv6")
def test_runner_custom_defaults_ipv6(self):
self.cmd.default_addr_ipv6 = '::'
call_command(self.cmd, use_ipv6=True)
self.assertServerSettings('::', '8000', ipv6=True, raw_ipv6=True)
def test_runner_ambiguous(self):
# Only 4 characters, all of which could be in an ipv6 address
call_command(self.cmd, addrport="beef:7654")
self.assertServerSettings('beef', '7654')
# Uses only characters that could be in an ipv6 address
call_command(self.cmd, addrport="deadbeef:7654")
self.assertServerSettings('deadbeef', '7654')
def test_no_database(self):
"""
Ensure runserver.check_migrations doesn't choke on empty DATABASES.
"""
tested_connections = ConnectionHandler({})
with mock.patch('django.core.management.base.connections', new=tested_connections):
self.cmd.check_migrations()
def test_readonly_database(self):
"""
runserver.check_migrations() doesn't choke when a database is read-only.
"""
with mock.patch.object(MigrationRecorder, 'has_table', return_value=False):
self.cmd.check_migrations()
# You have # ...
self.assertIn('unapplied migration(s)', self.output.getvalue())
@mock.patch('django.core.management.commands.runserver.run')
@mock.patch('django.core.management.base.BaseCommand.check_migrations')
@mock.patch('django.core.management.base.BaseCommand.check')
def test_skip_checks(self, mocked_check, *mocked_objects):
call_command(
'runserver',
use_reloader=False,
skip_checks=True,
stdout=self.output,
)
self.assertNotIn('Performing system checks...', self.output.getvalue())
mocked_check.assert_not_called()
self.output.truncate(0)
call_command(
'runserver',
use_reloader=False,
skip_checks=False,
stdout=self.output,
)
self.assertIn('Performing system checks...', self.output.getvalue())
mocked_check.assert_called()
class ManageRunserverMigrationWarning(TestCase):
def setUp(self):
self.stdout = StringIO()
self.runserver_command = RunserverCommand(stdout=self.stdout)
@override_settings(INSTALLED_APPS=["admin_scripts.app_waiting_migration"])
def test_migration_warning_one_app(self):
self.runserver_command.check_migrations()
output = self.stdout.getvalue()
self.assertIn('You have 1 unapplied migration(s)', output)
self.assertIn('apply the migrations for app(s): app_waiting_migration.', output)
@override_settings(
INSTALLED_APPS=[
"admin_scripts.app_waiting_migration",
"admin_scripts.another_app_waiting_migration",
],
)
def test_migration_warning_multiple_apps(self):
self.runserver_command.check_migrations()
output = self.stdout.getvalue()
self.assertIn('You have 2 unapplied migration(s)', output)
self.assertIn(
'apply the migrations for app(s): another_app_waiting_migration, '
'app_waiting_migration.', output
)
class ManageRunserverEmptyAllowedHosts(AdminScriptTestCase):
def setUp(self):
super().setUp()
self.write_settings('settings.py', sdict={
'ALLOWED_HOSTS': [],
'DEBUG': False,
})
def test_empty_allowed_hosts_error(self):
out, err = self.run_manage(['runserver'])
self.assertNoOutput(out)
self.assertOutput(err, 'CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False.')
class ManageRunserverHelpOutput(AdminScriptTestCase):
def test_suppressed_options(self):
"""runserver doesn't support --verbosity and --trackback options."""
out, err = self.run_manage(['runserver', '--help'])
self.assertNotInOutput(out, '--verbosity')
self.assertNotInOutput(out, '--trackback')
self.assertOutput(out, '--settings')
class ManageTestserver(SimpleTestCase):
@mock.patch.object(TestserverCommand, 'handle', return_value='')
def test_testserver_handle_params(self, mock_handle):
out = StringIO()
call_command('testserver', 'blah.json', stdout=out)
mock_handle.assert_called_with(
'blah.json',
stdout=out, settings=None, pythonpath=None, verbosity=1,
traceback=False, addrport='', no_color=False, use_ipv6=False,
skip_checks=True, interactive=True, force_color=False,
)
@mock.patch('django.db.connection.creation.create_test_db', return_value='test_db')
@mock.patch.object(LoaddataCommand, 'handle', return_value='')
@mock.patch.object(RunserverCommand, 'handle', return_value='')
def test_params_to_runserver(self, mock_runserver_handle, mock_loaddata_handle, mock_create_test_db):
call_command('testserver', 'blah.json')
mock_runserver_handle.assert_called_with(
addrport='',
force_color=False,
insecure_serving=False,
no_color=False,
pythonpath=None,
settings=None,
shutdown_message=(
"\nServer stopped.\nNote that the test database, 'test_db', "
"has not been deleted. You can explore it on your own."
),
skip_checks=True,
traceback=False,
use_ipv6=False,
use_reloader=False,
use_static_handler=True,
use_threading=connection.features.test_db_allows_multiple_connections,
verbosity=1,
)
##########################################################################
# COMMAND PROCESSING TESTS
# user-space commands are correctly handled - in particular, arguments to
# the commands are correctly parsed and processed.
##########################################################################
class ColorCommand(BaseCommand):
requires_system_checks = []
def handle(self, *args, **options):
self.stdout.write('Hello, world!', self.style.ERROR)
self.stderr.write('Hello, world!', self.style.ERROR)
class CommandTypes(AdminScriptTestCase):
"Tests for the various types of base command types that can be defined."
def setUp(self):
super().setUp()
self.write_settings('settings.py')
def test_version(self):
"version is handled as a special case"
args = ['version']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, get_version())
def test_version_alternative(self):
"--version is equivalent to version"
args1, args2 = ['version'], ['--version']
# It's possible one outputs on stderr and the other on stdout, hence the set
self.assertEqual(set(self.run_manage(args1)), set(self.run_manage(args2)))
def test_help(self):
"help is handled as a special case"
args = ['help']
out, err = self.run_manage(args)
self.assertOutput(out, "Type 'manage.py help <subcommand>' for help on a specific subcommand.")
self.assertOutput(out, '[django]')
self.assertOutput(out, 'startapp')
self.assertOutput(out, 'startproject')
def test_help_commands(self):
"help --commands shows the list of all available commands"
args = ['help', '--commands']
out, err = self.run_manage(args)
self.assertNotInOutput(out, 'usage:')
self.assertNotInOutput(out, 'Options:')
self.assertNotInOutput(out, '[django]')
self.assertOutput(out, 'startapp')
self.assertOutput(out, 'startproject')
self.assertNotInOutput(out, '\n\n')
def test_help_alternative(self):
"--help is equivalent to help"
args1, args2 = ['help'], ['--help']
self.assertEqual(self.run_manage(args1), self.run_manage(args2))
def test_help_short_altert(self):
"-h is handled as a short form of --help"
args1, args2 = ['--help'], ['-h']
self.assertEqual(self.run_manage(args1), self.run_manage(args2))
def test_specific_help(self):
"--help can be used on a specific command"
args = ['check', '--help']
out, err = self.run_manage(args)
self.assertNoOutput(err)
# Command-specific options like --tag appear before options common to
# all commands like --version.
tag_location = out.find('--tag')
version_location = out.find('--version')
self.assertNotEqual(tag_location, -1)
self.assertNotEqual(version_location, -1)
self.assertLess(tag_location, version_location)
self.assertOutput(out, "Checks the entire Django project for potential problems.")
def test_help_default_options_with_custom_arguments(self):
args = ['base_command', '--help']
out, err = self.run_manage(args)
self.assertNoOutput(err)
expected_options = [
'-h',
'--option_a OPTION_A',
'--option_b OPTION_B',
'--option_c OPTION_C',
'--version',
'-v {0,1,2,3}',
'--settings SETTINGS',
'--pythonpath PYTHONPATH',
'--traceback',
'--no-color',
'--force-color',
'args ...',
]
for option in expected_options:
self.assertOutput(out, f'[{option}]')
self.assertOutput(out, '--option_a OPTION_A, -a OPTION_A')
self.assertOutput(out, '--option_b OPTION_B, -b OPTION_B')
self.assertOutput(out, '--option_c OPTION_C, -c OPTION_C')
self.assertOutput(out, '-v {0,1,2,3}, --verbosity {0,1,2,3}')
def test_color_style(self):
style = color.no_style()
self.assertEqual(style.ERROR('Hello, world!'), 'Hello, world!')
style = color.make_style('nocolor')
self.assertEqual(style.ERROR('Hello, world!'), 'Hello, world!')
style = color.make_style('dark')
self.assertIn('Hello, world!', style.ERROR('Hello, world!'))
self.assertNotEqual(style.ERROR('Hello, world!'), 'Hello, world!')
# Default palette has color.
style = color.make_style('')
self.assertIn('Hello, world!', style.ERROR('Hello, world!'))
self.assertNotEqual(style.ERROR('Hello, world!'), 'Hello, world!')
def test_command_color(self):
out = StringIO()
err = StringIO()
command = ColorCommand(stdout=out, stderr=err)
call_command(command)
if color.supports_color():
self.assertIn('Hello, world!\n', out.getvalue())
self.assertIn('Hello, world!\n', err.getvalue())
self.assertNotEqual(out.getvalue(), 'Hello, world!\n')
self.assertNotEqual(err.getvalue(), 'Hello, world!\n')
else:
self.assertEqual(out.getvalue(), 'Hello, world!\n')
self.assertEqual(err.getvalue(), 'Hello, world!\n')
def test_command_no_color(self):
"--no-color prevent colorization of the output"
out = StringIO()
err = StringIO()
command = ColorCommand(stdout=out, stderr=err, no_color=True)
call_command(command)
self.assertEqual(out.getvalue(), 'Hello, world!\n')
self.assertEqual(err.getvalue(), 'Hello, world!\n')
out = StringIO()
err = StringIO()
command = ColorCommand(stdout=out, stderr=err)
call_command(command, no_color=True)
self.assertEqual(out.getvalue(), 'Hello, world!\n')
self.assertEqual(err.getvalue(), 'Hello, world!\n')
def test_force_color_execute(self):
out = StringIO()
err = StringIO()
with mock.patch.object(sys.stdout, 'isatty', lambda: False):
command = ColorCommand(stdout=out, stderr=err)
call_command(command, force_color=True)
self.assertEqual(out.getvalue(), '\x1b[31;1mHello, world!\n\x1b[0m')
self.assertEqual(err.getvalue(), '\x1b[31;1mHello, world!\n\x1b[0m')
def test_force_color_command_init(self):
out = StringIO()
err = StringIO()
with mock.patch.object(sys.stdout, 'isatty', lambda: False):
command = ColorCommand(stdout=out, stderr=err, force_color=True)
call_command(command)
self.assertEqual(out.getvalue(), '\x1b[31;1mHello, world!\n\x1b[0m')
self.assertEqual(err.getvalue(), '\x1b[31;1mHello, world!\n\x1b[0m')
def test_no_color_force_color_mutually_exclusive_execute(self):
msg = "The --no-color and --force-color options can't be used together."
with self.assertRaisesMessage(CommandError, msg):
call_command(BaseCommand(), no_color=True, force_color=True)
def test_no_color_force_color_mutually_exclusive_command_init(self):
msg = "'no_color' and 'force_color' can't be used together."
with self.assertRaisesMessage(CommandError, msg):
call_command(BaseCommand(no_color=True, force_color=True))
def test_custom_stdout(self):
class Command(BaseCommand):
requires_system_checks = []
def handle(self, *args, **options):
self.stdout.write("Hello, World!")
out = StringIO()
command = Command(stdout=out)
call_command(command)
self.assertEqual(out.getvalue(), "Hello, World!\n")
out.truncate(0)
new_out = StringIO()
call_command(command, stdout=new_out)
self.assertEqual(out.getvalue(), "")
self.assertEqual(new_out.getvalue(), "Hello, World!\n")
def test_custom_stderr(self):
class Command(BaseCommand):
requires_system_checks = []
def handle(self, *args, **options):
self.stderr.write("Hello, World!")
err = StringIO()
command = Command(stderr=err)
call_command(command)
self.assertEqual(err.getvalue(), "Hello, World!\n")
err.truncate(0)
new_err = StringIO()
call_command(command, stderr=new_err)
self.assertEqual(err.getvalue(), "")
self.assertEqual(new_err.getvalue(), "Hello, World!\n")
def test_base_command(self):
"User BaseCommands can execute when a label is provided"
args = ['base_command', 'testlabel']
expected_labels = "('testlabel',)"
self._test_base_command(args, expected_labels)
def test_base_command_no_label(self):
"User BaseCommands can execute when no labels are provided"
args = ['base_command']
expected_labels = "()"
self._test_base_command(args, expected_labels)
def test_base_command_multiple_label(self):
"User BaseCommands can execute when no labels are provided"
args = ['base_command', 'testlabel', 'anotherlabel']
expected_labels = "('testlabel', 'anotherlabel')"
self._test_base_command(args, expected_labels)
def test_base_command_with_option(self):
"User BaseCommands can execute with options when a label is provided"
args = ['base_command', 'testlabel', '--option_a=x']
expected_labels = "('testlabel',)"
self._test_base_command(args, expected_labels, option_a="'x'")
def test_base_command_with_options(self):
"User BaseCommands can execute with multiple options when a label is provided"
args = ['base_command', 'testlabel', '-a', 'x', '--option_b=y']
expected_labels = "('testlabel',)"
self._test_base_command(args, expected_labels, option_a="'x'", option_b="'y'")
def test_base_command_with_wrong_option(self):
"User BaseCommands outputs command usage when wrong option is specified"
args = ['base_command', '--invalid']
out, err = self.run_manage(args)
self.assertNoOutput(out)
self.assertOutput(err, "usage: manage.py base_command")
self.assertOutput(err, "error: unrecognized arguments: --invalid")
def _test_base_command(self, args, labels, option_a="'1'", option_b="'2'"):
out, err = self.run_manage(args)
expected_out = (
"EXECUTE:BaseCommand labels=%s, "
"options=[('force_color', False), ('no_color', False), "
"('option_a', %s), ('option_b', %s), ('option_c', '3'), "
"('pythonpath', None), ('settings', None), ('traceback', False), "
"('verbosity', 1)]") % (labels, option_a, option_b)
self.assertNoOutput(err)
self.assertOutput(out, expected_out)
def test_base_run_from_argv(self):
"""
Test run_from_argv properly terminates even with custom execute() (#19665)
Also test proper traceback display.
"""
err = StringIO()
command = BaseCommand(stderr=err)
def raise_command_error(*args, **kwargs):
raise CommandError("Custom error")
command.execute = lambda args: args # This will trigger TypeError
# If the Exception is not CommandError it should always
# raise the original exception.
with self.assertRaises(TypeError):
command.run_from_argv(['', ''])
# If the Exception is CommandError and --traceback is not present
# this command should raise a SystemExit and don't print any
# traceback to the stderr.
command.execute = raise_command_error
err.truncate(0)
with self.assertRaises(SystemExit):
command.run_from_argv(['', ''])
err_message = err.getvalue()
self.assertNotIn("Traceback", err_message)
self.assertIn("CommandError", err_message)
# If the Exception is CommandError and --traceback is present
# this command should raise the original CommandError as if it
# were not a CommandError.
err.truncate(0)
with self.assertRaises(CommandError):
command.run_from_argv(['', '', '--traceback'])
def test_run_from_argv_non_ascii_error(self):
"""
Non-ASCII message of CommandError does not raise any
UnicodeDecodeError in run_from_argv.
"""
def raise_command_error(*args, **kwargs):
raise CommandError("Erreur personnalisée")
command = BaseCommand(stderr=StringIO())
command.execute = raise_command_error
with self.assertRaises(SystemExit):
command.run_from_argv(['', ''])
def test_run_from_argv_closes_connections(self):
"""
A command called from the command line should close connections after
being executed (#21255).
"""
command = BaseCommand()
command.check = lambda: []
command.handle = lambda *args, **kwargs: args
with mock.patch('django.core.management.base.connections') as mock_connections:
command.run_from_argv(['', ''])
# Test connections have been closed
self.assertTrue(mock_connections.close_all.called)
def test_noargs(self):
"NoArg Commands can be executed"
args = ['noargs_command']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(
out,
"EXECUTE: noargs_command options=[('force_color', False), "
"('no_color', False), ('pythonpath', None), ('settings', None), "
"('traceback', False), ('verbosity', 1)]"
)
def test_noargs_with_args(self):
"NoArg Commands raise an error if an argument is provided"
args = ['noargs_command', 'argument']
out, err = self.run_manage(args)
self.assertOutput(err, "error: unrecognized arguments: argument")
def test_app_command(self):
"User AppCommands can execute when a single app name is provided"
args = ['app_command', 'auth']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE:AppCommand name=django.contrib.auth, options=")
self.assertOutput(
out,
", options=[('force_color', False), ('no_color', False), "
"('pythonpath', None), ('settings', None), ('traceback', False), "
"('verbosity', 1)]"
)
def test_app_command_no_apps(self):
"User AppCommands raise an error when no app name is provided"
args = ['app_command']
out, err = self.run_manage(args)
self.assertOutput(err, 'error: Enter at least one application label.')
def test_app_command_multiple_apps(self):
"User AppCommands raise an error when multiple app names are provided"
args = ['app_command', 'auth', 'contenttypes']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "EXECUTE:AppCommand name=django.contrib.auth, options=")
self.assertOutput(
out,
", options=[('force_color', False), ('no_color', False), "
"('pythonpath', None), ('settings', None), ('traceback', False), "
"('verbosity', 1)]"
)
self.assertOutput(out, "EXECUTE:AppCommand name=django.contrib.contenttypes, options=")
self.assertOutput(
out,
", options=[('force_color', False), ('no_color', False), "
"('pythonpath', None), ('settings', None), ('traceback', False), "
"('verbosity', 1)]"
)
def test_app_command_invalid_app_label(self):
"User AppCommands can execute when a single app name is provided"
args = ['app_command', 'NOT_AN_APP']
out, err = self.run_manage(args)
self.assertOutput(err, "No installed app with label 'NOT_AN_APP'.")
def test_app_command_some_invalid_app_labels(self):
"User AppCommands can execute when some of the provided app names are invalid"
args = ['app_command', 'auth', 'NOT_AN_APP']
out, err = self.run_manage(args)
self.assertOutput(err, "No installed app with label 'NOT_AN_APP'.")
def test_label_command(self):
"User LabelCommands can execute when a label is provided"
args = ['label_command', 'testlabel']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(
out,
"EXECUTE:LabelCommand label=testlabel, options=[('force_color', "
"False), ('no_color', False), ('pythonpath', None), ('settings', "
"None), ('traceback', False), ('verbosity', 1)]"
)
def test_label_command_no_label(self):
"User LabelCommands raise an error if no label is provided"
args = ['label_command']
out, err = self.run_manage(args)
self.assertOutput(err, 'Enter at least one label')
def test_label_command_multiple_label(self):
"User LabelCommands are executed multiple times if multiple labels are provided"
args = ['label_command', 'testlabel', 'anotherlabel']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(
out,
"EXECUTE:LabelCommand label=testlabel, options=[('force_color', "
"False), ('no_color', False), ('pythonpath', None), "
"('settings', None), ('traceback', False), ('verbosity', 1)]"
)
self.assertOutput(
out,
"EXECUTE:LabelCommand label=anotherlabel, options=[('force_color', "
"False), ('no_color', False), ('pythonpath', None), "
"('settings', None), ('traceback', False), ('verbosity', 1)]"
)
def test_suppress_base_options_command_help(self):
args = ['suppress_base_options_command', '--help']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, 'Test suppress base options command.')
self.assertNotInOutput(out, 'input file')
self.assertOutput(out, '-h, --help')
self.assertNotInOutput(out, '--version')
self.assertNotInOutput(out, '--verbosity')
self.assertNotInOutput(out, '-v {0,1,2,3}')
self.assertNotInOutput(out, '--settings')
self.assertNotInOutput(out, '--pythonpath')
self.assertNotInOutput(out, '--traceback')
self.assertNotInOutput(out, '--no-color')
self.assertNotInOutput(out, '--force-color')
def test_suppress_base_options_command_defaults(self):
args = ['suppress_base_options_command']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(
out,
"EXECUTE:SuppressBaseOptionsCommand options=[('file', None), "
"('force_color', False), ('no_color', False), "
"('pythonpath', None), ('settings', None), "
"('traceback', False), ('verbosity', 1)]"
)
class Discovery(SimpleTestCase):
def test_precedence(self):
"""
Apps listed first in INSTALLED_APPS have precedence.
"""
with self.settings(INSTALLED_APPS=['admin_scripts.complex_app',
'admin_scripts.simple_app',
'django.contrib.auth',
'django.contrib.contenttypes']):
out = StringIO()
call_command('duplicate', stdout=out)
self.assertEqual(out.getvalue().strip(), 'complex_app')
with self.settings(INSTALLED_APPS=['admin_scripts.simple_app',
'admin_scripts.complex_app',
'django.contrib.auth',
'django.contrib.contenttypes']):
out = StringIO()
call_command('duplicate', stdout=out)
self.assertEqual(out.getvalue().strip(), 'simple_app')
class ArgumentOrder(AdminScriptTestCase):
"""Tests for 2-stage argument parsing scheme.
django-admin command arguments are parsed in 2 parts; the core arguments
(--settings, --traceback and --pythonpath) are parsed using a basic parser,
ignoring any unknown options. Then the full settings are
passed to the command parser, which extracts commands of interest to the
individual command.
"""
def setUp(self):
super().setUp()
self.write_settings('settings.py', apps=['django.contrib.auth', 'django.contrib.contenttypes'])
self.write_settings('alternate_settings.py')
def test_setting_then_option(self):
""" Options passed after settings are correctly handled. """
args = ['base_command', 'testlabel', '--settings=alternate_settings', '--option_a=x']
self._test(args)
def test_setting_then_short_option(self):
""" Short options passed after settings are correctly handled. """
args = ['base_command', 'testlabel', '--settings=alternate_settings', '-a', 'x']
self._test(args)
def test_option_then_setting(self):
""" Options passed before settings are correctly handled. """
args = ['base_command', 'testlabel', '--option_a=x', '--settings=alternate_settings']
self._test(args)
def test_short_option_then_setting(self):
""" Short options passed before settings are correctly handled. """
args = ['base_command', 'testlabel', '-a', 'x', '--settings=alternate_settings']
self._test(args)
def test_option_then_setting_then_option(self):
""" Options are correctly handled when they are passed before and after
a setting. """
args = ['base_command', 'testlabel', '--option_a=x', '--settings=alternate_settings', '--option_b=y']
self._test(args, option_b="'y'")
def _test(self, args, option_b="'2'"):
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(
out,
"EXECUTE:BaseCommand labels=('testlabel',), options=["
"('force_color', False), ('no_color', False), ('option_a', 'x'), "
"('option_b', %s), ('option_c', '3'), ('pythonpath', None), "
"('settings', 'alternate_settings'), ('traceback', False), "
"('verbosity', 1)]" % option_b
)
class ExecuteFromCommandLine(SimpleTestCase):
def test_program_name_from_argv(self):
"""
Program name is computed from the execute_from_command_line()'s argv
argument, not sys.argv.
"""
args = ['help', 'shell']
with captured_stdout() as out, captured_stderr() as err:
with mock.patch('sys.argv', [None] + args):
execute_from_command_line(['django-admin'] + args)
self.assertIn('usage: django-admin shell', out.getvalue())
self.assertEqual(err.getvalue(), '')
@override_settings(ROOT_URLCONF='admin_scripts.urls')
class StartProject(LiveServerTestCase, AdminScriptTestCase):
available_apps = [
'admin_scripts',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
]
def test_wrong_args(self):
"Make sure passing the wrong kinds of arguments outputs an error and prints usage"
out, err = self.run_django_admin(['startproject'])
self.assertNoOutput(out)
self.assertOutput(err, "usage:")
self.assertOutput(err, "You must provide a project name.")
def test_simple_project(self):
"Make sure the startproject management command creates a project"
args = ['startproject', 'testproject']
testproject_dir = os.path.join(self.test_dir, 'testproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
# running again..
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(
err,
"CommandError: 'testproject' conflicts with the name of an "
"existing Python module and cannot be used as a project name. "
"Please try another name.",
)
def test_invalid_project_name(self):
"Make sure the startproject management command validates a project name"
for bad_name in ('7testproject', '../testproject'):
with self.subTest(project_name=bad_name):
args = ['startproject', bad_name]
testproject_dir = os.path.join(self.test_dir, bad_name)
out, err = self.run_django_admin(args)
self.assertOutput(
err,
"Error: '%s' is not a valid project name. Please make "
"sure the name is a valid identifier." % bad_name
)
self.assertFalse(os.path.exists(testproject_dir))
def test_importable_project_name(self):
"""
startproject validates that project name doesn't clash with existing
Python modules.
"""
bad_name = 'os'
args = ['startproject', bad_name]
testproject_dir = os.path.join(self.test_dir, bad_name)
out, err = self.run_django_admin(args)
self.assertOutput(
err,
"CommandError: 'os' conflicts with the name of an existing "
"Python module and cannot be used as a project name. Please try "
"another name."
)
self.assertFalse(os.path.exists(testproject_dir))
def test_simple_project_different_directory(self):
"Make sure the startproject management command creates a project in a specific directory"
args = ['startproject', 'testproject', 'othertestproject']
testproject_dir = os.path.join(self.test_dir, 'othertestproject')
os.mkdir(testproject_dir)
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'manage.py')))
# running again..
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(
err,
"already exists. Overlaying a project into an existing directory "
"won't replace conflicting files."
)
def test_custom_project_template(self):
"Make sure the startproject management command is able to use a different project template"
template_path = os.path.join(custom_templates_dir, 'project_template')
args = ['startproject', '--template', template_path, 'customtestproject']
testproject_dir = os.path.join(self.test_dir, 'customtestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'additional_dir')))
def test_template_dir_with_trailing_slash(self):
"Ticket 17475: Template dir passed has a trailing path separator"
template_path = os.path.join(custom_templates_dir, 'project_template' + os.sep)
args = ['startproject', '--template', template_path, 'customtestproject']
testproject_dir = os.path.join(self.test_dir, 'customtestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'additional_dir')))
def test_custom_project_template_from_tarball_by_path(self):
"Make sure the startproject management command is able to use a different project template from a tarball"
template_path = os.path.join(custom_templates_dir, 'project_template.tgz')
args = ['startproject', '--template', template_path, 'tarballtestproject']
testproject_dir = os.path.join(self.test_dir, 'tarballtestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'run.py')))
def test_custom_project_template_from_tarball_to_alternative_location(self):
"Startproject can use a project template from a tarball and create it in a specified location"
template_path = os.path.join(custom_templates_dir, 'project_template.tgz')
args = ['startproject', '--template', template_path, 'tarballtestproject', 'altlocation']
testproject_dir = os.path.join(self.test_dir, 'altlocation')
os.mkdir(testproject_dir)
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'run.py')))
def test_custom_project_template_from_tarball_by_url(self):
"""
The startproject management command is able to use a different project
template from a tarball via a URL.
"""
template_url = '%s/custom_templates/project_template.tgz' % self.live_server_url
args = ['startproject', '--template', template_url, 'urltestproject']
testproject_dir = os.path.join(self.test_dir, 'urltestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'run.py')))
def test_project_template_tarball_url(self):
"Startproject management command handles project template tar/zip balls from non-canonical urls"
template_url = '%s/custom_templates/project_template.tgz/' % self.live_server_url
args = ['startproject', '--template', template_url, 'urltestproject']
testproject_dir = os.path.join(self.test_dir, 'urltestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'run.py')))
def test_file_without_extension(self):
"Make sure the startproject management command is able to render custom files"
template_path = os.path.join(custom_templates_dir, 'project_template')
args = ['startproject', '--template', template_path, 'customtestproject', '-e', 'txt', '-n', 'Procfile']
testproject_dir = os.path.join(self.test_dir, 'customtestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
self.assertTrue(os.path.exists(os.path.join(testproject_dir, 'additional_dir')))
base_path = os.path.join(testproject_dir, 'additional_dir')
for f in ('Procfile', 'additional_file.py', 'requirements.txt'):
self.assertTrue(os.path.exists(os.path.join(base_path, f)))
with open(os.path.join(base_path, f)) as fh:
self.assertEqual(fh.read().strip(), '# some file for customtestproject test project')
def test_custom_project_template_context_variables(self):
"Make sure template context variables are rendered with proper values"
template_path = os.path.join(custom_templates_dir, 'project_template')
args = ['startproject', '--template', template_path, 'another_project', 'project_dir']
testproject_dir = os.path.join(self.test_dir, 'project_dir')
os.mkdir(testproject_dir)
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
test_manage_py = os.path.join(testproject_dir, 'manage.py')
with open(test_manage_py) as fp:
content = fp.read()
self.assertIn("project_name = 'another_project'", content)
self.assertIn("project_directory = '%s'" % testproject_dir, content)
def test_no_escaping_of_project_variables(self):
"Make sure template context variables are not html escaped"
# We're using a custom command so we need the alternate settings
self.write_settings('alternate_settings.py')
template_path = os.path.join(custom_templates_dir, 'project_template')
args = [
'custom_startproject', '--template', template_path,
'another_project', 'project_dir', '--extra', '<&>',
'--settings=alternate_settings',
]
testproject_dir = os.path.join(self.test_dir, 'project_dir')
os.mkdir(testproject_dir)
out, err = self.run_manage(args)
self.assertNoOutput(err)
test_manage_py = os.path.join(testproject_dir, 'additional_dir', 'extra.py')
with open(test_manage_py) as fp:
content = fp.read()
self.assertIn("<&>", content)
def test_custom_project_destination_missing(self):
"""
Make sure an exception is raised when the provided
destination directory doesn't exist
"""
template_path = os.path.join(custom_templates_dir, 'project_template')
args = ['startproject', '--template', template_path, 'yet_another_project', 'project_dir2']
testproject_dir = os.path.join(self.test_dir, 'project_dir2')
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "Destination directory '%s' does not exist, please create it first." % testproject_dir)
self.assertFalse(os.path.exists(testproject_dir))
def test_custom_project_template_with_non_ascii_templates(self):
"""
The startproject management command is able to render templates with
non-ASCII content.
"""
template_path = os.path.join(custom_templates_dir, 'project_template')
args = ['startproject', '--template', template_path, '--extension=txt', 'customtestproject']
testproject_dir = os.path.join(self.test_dir, 'customtestproject')
out, err = self.run_django_admin(args)
self.assertNoOutput(err)
self.assertTrue(os.path.isdir(testproject_dir))
path = os.path.join(testproject_dir, 'ticket-18091-non-ascii-template.txt')
with open(path, encoding='utf-8') as f:
self.assertEqual(f.read().splitlines(False), [
'Some non-ASCII text for testing ticket #18091:',
'üäö €'])
def test_custom_project_template_hidden_directory_default_excluded(self):
"""Hidden directories are excluded by default."""
template_path = os.path.join(custom_templates_dir, 'project_template')
args = [
'startproject',
'--template',
template_path,
'custom_project_template_hidden_directories',
'project_dir',
]
testproject_dir = os.path.join(self.test_dir, 'project_dir')
os.mkdir(testproject_dir)
_, err = self.run_django_admin(args)
self.assertNoOutput(err)
hidden_dir = os.path.join(testproject_dir, '.hidden')
self.assertIs(os.path.exists(hidden_dir), False)
def test_custom_project_template_hidden_directory_included(self):
"""
Template context variables in hidden directories are rendered, if not
excluded.
"""
template_path = os.path.join(custom_templates_dir, 'project_template')
project_name = 'custom_project_template_hidden_directories_included'
args = [
'startproject',
'--template',
template_path,
project_name,
'project_dir',
'--exclude',
]
testproject_dir = os.path.join(self.test_dir, 'project_dir')
os.mkdir(testproject_dir)
_, err = self.run_django_admin(args)
self.assertNoOutput(err)
render_py_path = os.path.join(testproject_dir, '.hidden', 'render.py')
with open(render_py_path) as fp:
self.assertIn(
f'# The {project_name} should be rendered.',
fp.read(),
)
def test_custom_project_template_exclude_directory(self):
"""
Excluded directories (in addition to .git and __pycache__) are not
included in the project.
"""
template_path = os.path.join(custom_templates_dir, 'project_template')
project_name = 'custom_project_with_excluded_directories'
args = [
'startproject',
'--template',
template_path,
project_name,
'project_dir',
'--exclude',
'additional_dir',
'-x',
'.hidden',
]
testproject_dir = os.path.join(self.test_dir, 'project_dir')
os.mkdir(testproject_dir)
_, err = self.run_django_admin(args)
self.assertNoOutput(err)
excluded_directories = [
'.hidden',
'additional_dir',
'.git',
'__pycache__',
]
for directory in excluded_directories:
self.assertIs(
os.path.exists(os.path.join(testproject_dir, directory)),
False,
)
not_excluded = os.path.join(testproject_dir, project_name)
self.assertIs(os.path.exists(not_excluded), True)
class StartApp(AdminScriptTestCase):
def test_invalid_name(self):
"""startapp validates that app name is a valid Python identifier."""
for bad_name in ('7testproject', '../testproject'):
with self.subTest(app_name=bad_name):
args = ['startapp', bad_name]
testproject_dir = os.path.join(self.test_dir, bad_name)
out, err = self.run_django_admin(args)
self.assertOutput(
err,
"CommandError: '{}' is not a valid app name. Please make "
"sure the name is a valid identifier.".format(bad_name)
)
self.assertFalse(os.path.exists(testproject_dir))
def test_importable_name(self):
"""
startapp validates that app name doesn't clash with existing Python
modules.
"""
bad_name = 'os'
args = ['startapp', bad_name]
testproject_dir = os.path.join(self.test_dir, bad_name)
out, err = self.run_django_admin(args)
self.assertOutput(
err,
"CommandError: 'os' conflicts with the name of an existing "
"Python module and cannot be used as an app name. Please try "
"another name."
)
self.assertFalse(os.path.exists(testproject_dir))
def test_invalid_target_name(self):
for bad_target in ('invalid.dir_name', '7invalid_dir_name', '.invalid_dir_name'):
with self.subTest(bad_target):
_, err = self.run_django_admin(['startapp', 'app', bad_target])
self.assertOutput(
err,
"CommandError: '%s' is not a valid app directory. Please "
"make sure the directory is a valid identifier." % bad_target
)
def test_importable_target_name(self):
_, err = self.run_django_admin(['startapp', 'app', 'os'])
self.assertOutput(
err,
"CommandError: 'os' conflicts with the name of an existing Python "
"module and cannot be used as an app directory. Please try "
"another directory."
)
def test_trailing_slash_in_target_app_directory_name(self):
app_dir = os.path.join(self.test_dir, 'apps', 'app1')
os.makedirs(app_dir)
_, err = self.run_django_admin(['startapp', 'app', os.path.join('apps', 'app1', '')])
self.assertNoOutput(err)
self.assertIs(os.path.exists(os.path.join(app_dir, 'apps.py')), True)
def test_overlaying_app(self):
# Use a subdirectory so it is outside the PYTHONPATH.
os.makedirs(os.path.join(self.test_dir, 'apps/app1'))
self.run_django_admin(['startapp', 'app1', 'apps/app1'])
out, err = self.run_django_admin(['startapp', 'app2', 'apps/app1'])
self.assertOutput(
err,
"already exists. Overlaying an app into an existing directory "
"won't replace conflicting files."
)
def test_template(self):
out, err = self.run_django_admin(['startapp', 'new_app'])
self.assertNoOutput(err)
app_path = os.path.join(self.test_dir, 'new_app')
self.assertIs(os.path.exists(app_path), True)
with open(os.path.join(app_path, 'apps.py')) as f:
content = f.read()
self.assertIn('class NewAppConfig(AppConfig)', content)
self.assertIn(
"default_auto_field = 'django.db.models.BigAutoField'",
content,
)
self.assertIn("name = 'new_app'", content)
class DiffSettings(AdminScriptTestCase):
"""Tests for diffsettings management command."""
def test_basic(self):
"""Runs without error and emits settings diff."""
self.write_settings('settings_to_diff.py', sdict={'FOO': '"bar"'})
args = ['diffsettings', '--settings=settings_to_diff']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "FOO = 'bar' ###")
# Attributes from django.conf.Settings don't appear.
self.assertNotInOutput(out, 'is_overridden = ')
def test_settings_configured(self):
out, err = self.run_manage(['diffsettings'], manage_py='configured_settings_manage.py')
self.assertNoOutput(err)
self.assertOutput(out, 'CUSTOM = 1 ###\nDEBUG = True')
# Attributes from django.conf.UserSettingsHolder don't appear.
self.assertNotInOutput(out, 'default_settings = ')
def test_dynamic_settings_configured(self):
# Custom default settings appear.
out, err = self.run_manage(['diffsettings'], manage_py='configured_dynamic_settings_manage.py')
self.assertNoOutput(err)
self.assertOutput(out, "FOO = 'bar' ###")
def test_all(self):
"""The all option also shows settings with the default value."""
self.write_settings('settings_to_diff.py', sdict={'STATIC_URL': 'None'})
args = ['diffsettings', '--settings=settings_to_diff', '--all']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "### STATIC_URL = None")
def test_custom_default(self):
"""
The --default option specifies an alternate settings module for
comparison.
"""
self.write_settings('settings_default.py', sdict={'FOO': '"foo"', 'BAR': '"bar1"'})
self.write_settings('settings_to_diff.py', sdict={'FOO': '"foo"', 'BAR': '"bar2"'})
out, err = self.run_manage(['diffsettings', '--settings=settings_to_diff', '--default=settings_default'])
self.assertNoOutput(err)
self.assertNotInOutput(out, "FOO")
self.assertOutput(out, "BAR = 'bar2'")
def test_unified(self):
"""--output=unified emits settings diff in unified mode."""
self.write_settings('settings_to_diff.py', sdict={'FOO': '"bar"'})
args = ['diffsettings', '--settings=settings_to_diff', '--output=unified']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, "+ FOO = 'bar'")
self.assertOutput(out, "- SECRET_KEY = ''")
self.assertOutput(out, "+ SECRET_KEY = 'django_tests_secret_key'")
self.assertNotInOutput(out, " APPEND_SLASH = True")
def test_unified_all(self):
"""
--output=unified --all emits settings diff in unified mode and includes
settings with the default value.
"""
self.write_settings('settings_to_diff.py', sdict={'FOO': '"bar"'})
args = ['diffsettings', '--settings=settings_to_diff', '--output=unified', '--all']
out, err = self.run_manage(args)
self.assertNoOutput(err)
self.assertOutput(out, " APPEND_SLASH = True")
self.assertOutput(out, "+ FOO = 'bar'")
self.assertOutput(out, "- SECRET_KEY = ''")
class Dumpdata(AdminScriptTestCase):
"""Tests for dumpdata management command."""
def setUp(self):
super().setUp()
self.write_settings('settings.py')
def test_pks_parsing(self):
"""Regression for #20509
Test would raise an exception rather than printing an error message.
"""
args = ['dumpdata', '--pks=1']
out, err = self.run_manage(args)
self.assertOutput(err, "You can only use --pks option with one model")
self.assertNoOutput(out)
class MainModule(AdminScriptTestCase):
"""python -m django works like django-admin."""
def test_program_name_in_help(self):
out, err = self.run_test(['-m', 'django', 'help'])
self.assertOutput(out, "Type 'python -m django help <subcommand>' for help on a specific subcommand.")
class DjangoAdminSuggestions(AdminScriptTestCase):
def setUp(self):
super().setUp()
self.write_settings('settings.py')
def test_suggestions(self):
args = ['rnserver', '--settings=test_project.settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertOutput(err, "Unknown command: 'rnserver'. Did you mean runserver?")
def test_no_suggestions(self):
args = ['abcdef', '--settings=test_project.settings']
out, err = self.run_django_admin(args)
self.assertNoOutput(out)
self.assertNotInOutput(err, 'Did you mean')
|
500a21ed40c741724bfcc7d26e4e58ef7154f9b8dbe144a20685c27bfe22c4a1 | from django.db import migrations, models
from ..fields import (
ArrayField, BigIntegerRangeField, CICharField, CIEmailField, CITextField,
DateRangeField, DateTimeRangeField, DecimalRangeField, EnumField,
HStoreField, IntegerRangeField, SearchVectorField,
)
from ..models import TagField
class Migration(migrations.Migration):
dependencies = [
('postgres_tests', '0001_setup_extensions'),
]
operations = [
migrations.CreateModel(
name='CharArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', ArrayField(models.CharField(max_length=10), size=None)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='DateTimeArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('datetimes', ArrayField(models.DateTimeField(), size=None)),
('dates', ArrayField(models.DateField(), size=None)),
('times', ArrayField(models.TimeField(), size=None)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='HStoreModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', HStoreField(blank=True, null=True)),
('array_field', ArrayField(HStoreField(), null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='OtherTypesArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('ips', ArrayField(models.GenericIPAddressField(), size=None, default=list)),
('uuids', ArrayField(models.UUIDField(), size=None, default=list)),
('decimals', ArrayField(models.DecimalField(max_digits=5, decimal_places=2), size=None, default=list)),
('tags', ArrayField(TagField(), blank=True, null=True, size=None)),
('json', ArrayField(models.JSONField(default={}), default=[])),
('int_ranges', ArrayField(IntegerRangeField(), null=True, blank=True)),
('bigint_ranges', ArrayField(BigIntegerRangeField(), null=True, blank=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='IntegerArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', ArrayField(models.IntegerField(), size=None)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='NestedIntegerArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', ArrayField(ArrayField(models.IntegerField(), size=None), size=None)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='NullableIntegerArrayModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', ArrayField(models.IntegerField(), size=None, null=True, blank=True)),
(
'field_nested',
ArrayField(ArrayField(models.IntegerField(), size=None, null=True), size=None, null=True),
),
('order', models.IntegerField(null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='CharFieldModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', models.CharField(max_length=64)),
],
options=None,
bases=None,
),
migrations.CreateModel(
name='TextFieldModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('field', models.TextField()),
],
options=None,
bases=None,
),
migrations.CreateModel(
name='SmallAutoFieldModel',
fields=[
('id', models.SmallAutoField(verbose_name='ID', serialize=False, primary_key=True)),
],
options=None,
),
migrations.CreateModel(
name='BigAutoFieldModel',
fields=[
('id', models.BigAutoField(verbose_name='ID', serialize=False, primary_key=True)),
],
options=None,
),
migrations.CreateModel(
name='Scene',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('scene', models.CharField(max_length=255)),
('setting', models.CharField(max_length=255)),
],
options=None,
bases=None,
),
migrations.CreateModel(
name='Character',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('name', models.CharField(max_length=255)),
],
options=None,
bases=None,
),
migrations.CreateModel(
name='CITestModel',
fields=[
('name', CICharField(primary_key=True, max_length=255)),
('email', CIEmailField()),
('description', CITextField()),
('array_field', ArrayField(CITextField(), null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=None,
),
migrations.CreateModel(
name='Line',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('scene', models.ForeignKey('postgres_tests.Scene', on_delete=models.SET_NULL)),
('character', models.ForeignKey('postgres_tests.Character', on_delete=models.SET_NULL)),
('dialogue', models.TextField(blank=True, null=True)),
('dialogue_search_vector', SearchVectorField(blank=True, null=True)),
('dialogue_config', models.CharField(max_length=100, blank=True, null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=None,
),
migrations.CreateModel(
name='LineSavedSearch',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('line', models.ForeignKey('postgres_tests.Line', on_delete=models.CASCADE)),
('query', models.CharField(max_length=100)),
],
options={
'required_db_vendor': 'postgresql',
},
),
migrations.CreateModel(
name='AggregateTestModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('boolean_field', models.BooleanField(null=True)),
('char_field', models.CharField(max_length=30, blank=True)),
('integer_field', models.IntegerField(null=True)),
('json_field', models.JSONField(null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
),
migrations.CreateModel(
name='StatTestModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('int1', models.IntegerField()),
('int2', models.IntegerField()),
('related_field', models.ForeignKey(
'postgres_tests.AggregateTestModel',
models.SET_NULL,
null=True,
)),
],
options={
'required_db_vendor': 'postgresql',
},
),
migrations.CreateModel(
name='NowTestModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('when', models.DateTimeField(null=True, default=None)),
]
),
migrations.CreateModel(
name='UUIDTestModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('uuid', models.UUIDField(default=None, null=True)),
]
),
migrations.CreateModel(
name='RangesModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('ints', IntegerRangeField(null=True, blank=True)),
('bigints', BigIntegerRangeField(null=True, blank=True)),
('decimals', DecimalRangeField(null=True, blank=True)),
('timestamps', DateTimeRangeField(null=True, blank=True)),
('timestamps_inner', DateTimeRangeField(null=True, blank=True)),
('dates', DateRangeField(null=True, blank=True)),
('dates_inner', DateRangeField(null=True, blank=True)),
],
options={
'required_db_vendor': 'postgresql'
},
bases=(models.Model,)
),
migrations.CreateModel(
name='RangeLookupsModel',
fields=[
('parent', models.ForeignKey(
'postgres_tests.RangesModel',
models.SET_NULL,
blank=True, null=True,
)),
('integer', models.IntegerField(blank=True, null=True)),
('big_integer', models.BigIntegerField(blank=True, null=True)),
('float', models.FloatField(blank=True, null=True)),
('timestamp', models.DateTimeField(blank=True, null=True)),
('date', models.DateField(blank=True, null=True)),
('small_integer', models.SmallIntegerField(blank=True, null=True)),
('decimal_field', models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='ArrayEnumModel',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('array_of_enums', ArrayField(EnumField(max_length=20), null=True, blank=True)),
],
options={
'required_db_vendor': 'postgresql',
},
bases=(models.Model,),
),
migrations.CreateModel(
name='Room',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('number', models.IntegerField(unique=True)),
],
),
migrations.CreateModel(
name='HotelReservation',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('room', models.ForeignKey('postgres_tests.Room', models.CASCADE)),
('datespan', DateRangeField()),
('start', models.DateTimeField()),
('end', models.DateTimeField()),
('cancelled', models.BooleanField(default=False)),
('requirements', models.JSONField(blank=True, null=True)),
],
options={
'required_db_vendor': 'postgresql',
},
),
]
|
e9f0eae07c791744c779721d3ea40477532acbdd9e790a5093b37abf73eb9f9b | import copy
import datetime
import json
import uuid
from django.core.exceptions import NON_FIELD_ERRORS
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.validators import MaxValueValidator, RegexValidator
from django.forms import (
BooleanField, CharField, CheckboxSelectMultiple, ChoiceField, DateField,
DateTimeField, EmailField, FileField, FileInput, FloatField, Form,
HiddenInput, ImageField, IntegerField, MultipleChoiceField,
MultipleHiddenInput, MultiValueField, MultiWidget, NullBooleanField,
PasswordInput, RadioSelect, Select, SplitDateTimeField,
SplitHiddenDateTimeWidget, Textarea, TextInput, TimeField, ValidationError,
forms,
)
from django.forms.renderers import DjangoTemplates, get_default_renderer
from django.forms.utils import ErrorList
from django.http import QueryDict
from django.template import Context, Template
from django.test import SimpleTestCase
from django.test.utils import override_settings
from django.utils.datastructures import MultiValueDict
from django.utils.safestring import mark_safe
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=RadioSelect)
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class PersonNew(Form):
first_name = CharField(widget=TextInput(attrs={'id': 'first_name_id'}))
last_name = CharField()
birthday = DateField()
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
class MultiValueDictLike(dict):
def getlist(self, key):
return [self[key]]
class FormsTestCase(SimpleTestCase):
# A Form is a collection of Fields. It knows how to validate a set of data and it
# knows how to render itself in a couple of default ways (e.g., an HTML table).
# You can pass it data in __init__(), as a dictionary.
def test_form(self):
# Pass a dictionary to a Form's __init__().
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertHTMLEqual(p.errors.as_ul(), '')
self.assertEqual(p.errors.as_text(), '')
self.assertEqual(p.cleaned_data["first_name"], 'John')
self.assertEqual(p.cleaned_data["last_name"], 'Lennon')
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" value="John" id="id_first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="last_name" value="Lennon" id="id_last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>'
)
msg = "Key 'nonexistentfield' not found in 'Person'. Choices are: birthday, first_name, last_name."
with self.assertRaisesMessage(KeyError, msg):
p['nonexistentfield']
form_output = []
for boundfield in p:
form_output.append(str(boundfield))
self.assertHTMLEqual(
'\n'.join(form_output),
"""<input type="text" name="first_name" value="John" id="id_first_name" required>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>"""
)
form_output = []
for boundfield in p:
form_output.append([boundfield.label, boundfield.data])
self.assertEqual(form_output, [
['First name', 'John'],
['Last name', 'Lennon'],
['Birthday', '1940-10-9']
])
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>"""
)
def test_empty_dict(self):
# Empty dictionaries are valid, too.
p = Person({})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {})
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_empty_querydict_args(self):
data = QueryDict()
files = QueryDict()
p = Person(data, files)
self.assertIs(p.data, data)
self.assertIs(p.files, files)
def test_unbound_form(self):
# If you don't pass any values to the Form's __init__(), or if you pass None,
# the Form will be considered unbound and won't do any validation. Form.errors
# will be an empty dictionary *but* Form.is_valid() will return False.
p = Person()
self.assertFalse(p.is_bound)
self.assertEqual(p.errors, {})
self.assertFalse(p.is_valid())
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_unicode_values(self):
# Unicode values are handled properly.
p = Person({
'first_name': 'John',
'last_name': '\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111',
'birthday': '1940-10-9'
})
self.assertHTMLEqual(
p.as_table(),
'<tr><th><label for="id_first_name">First name:</label></th><td>'
'<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>\n'
'<tr><th><label for="id_last_name">Last name:</label>'
'</th><td><input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111"'
'id="id_last_name" required></td></tr>\n'
'<tr><th><label for="id_birthday">Birthday:</label></th><td>'
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>'
)
self.assertHTMLEqual(
p.as_ul(),
'<li><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></li>\n'
'<li><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></li>\n'
'<li><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></li>'
)
self.assertHTMLEqual(
p.as_p(),
'<p><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></p>\n'
'<p><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></p>\n'
'<p><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></p>'
)
p = Person({'last_name': 'Lennon'})
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(
p.errors,
{'birthday': ['This field is required.'], 'first_name': ['This field is required.']}
)
self.assertEqual(p.cleaned_data, {'last_name': 'Lennon'})
self.assertEqual(p['first_name'].errors, ['This field is required.'])
self.assertHTMLEqual(
p['first_name'].errors.as_ul(),
'<ul class="errorlist"><li>This field is required.</li></ul>'
)
self.assertEqual(p['first_name'].errors.as_text(), '* This field is required.')
p = Person()
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" id="id_first_name" required>',
)
self.assertHTMLEqual(str(p['last_name']), '<input type="text" name="last_name" id="id_last_name" required>')
self.assertHTMLEqual(str(p['birthday']), '<input type="text" name="birthday" id="id_birthday" required>')
def test_cleaned_data_only_fields(self):
# cleaned_data will always *only* contain a key for fields defined in the
# Form, even if you pass extra data when you define the Form. In this
# example, we pass a bunch of extra fields to the form constructor,
# but cleaned_data contains only the form's fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9',
'extra1': 'hello',
'extra2': 'hello',
}
p = Person(data)
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_optional_data(self):
# cleaned_data will include a key and value for *all* fields defined in the Form,
# even if the Form's data didn't include a value for fields that are not
# required. In this example, the data dictionary doesn't include a value for the
# "nick_name" field, but cleaned_data includes it. For CharFields, it's set to the
# empty string.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
nick_name = CharField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['nick_name'], '')
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
# For DateFields, it's set to None.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
birth_date = DateField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertIsNone(f.cleaned_data['birth_date'])
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
def test_auto_id(self):
# "auto_id" tells the Form to add an "id" attribute to each form element.
# If it's a string that contains '%s', Django will use that as a format string
# into which the field's name will be inserted. It will also put a <label> around
# the human-readable labels for a field.
p = Person(auto_id='%s_id')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="first_name_id">First name:</label></th><td>
<input type="text" name="first_name" id="first_name_id" required></td></tr>
<tr><th><label for="last_name_id">Last name:</label></th><td>
<input type="text" name="last_name" id="last_name_id" required></td></tr>
<tr><th><label for="birthday_id">Birthday:</label></th><td>
<input type="text" name="birthday" id="birthday_id" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></li>
<li><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></li>
<li><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></p>
<p><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></p>
<p><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></p>"""
)
def test_auto_id_true(self):
# If auto_id is any True value whose str() does not contain '%s', the "id"
# attribute will be the name of the field.
p = Person(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name">First name:</label>
<input type="text" name="first_name" id="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_auto_id_false(self):
# If auto_id is any False value, an "id" attribute won't be output unless it
# was manually entered.
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_id_on_field(self):
# In this example, auto_id is False, but the "id" attribute for the "first_name"
# field is given. Also note that field gets a <label>, while the others don't.
p = PersonNew(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_auto_id_on_form_and_field(self):
# If the "id" attribute is specified in the Form and auto_id is True, the "id"
# attribute in the Form gets precedence.
p = PersonNew(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_various_boolean_values(self):
class SignupForm(Form):
email = EmailField()
get_spam = BooleanField()
f = SignupForm(auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" required>')
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': True}, auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" value="[email protected]" required>')
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
# 'True' or 'true' should be rendered without a value attribute
f = SignupForm({'email': '[email protected]', 'get_spam': 'True'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
f = SignupForm({'email': '[email protected]', 'get_spam': 'true'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']), '<input checked type="checkbox" name="get_spam" required>')
# A value of 'False' or 'false' should be rendered unchecked
f = SignupForm({'email': '[email protected]', 'get_spam': 'False'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': 'false'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
# A value of '0' should be interpreted as a True value (#16820)
f = SignupForm({'email': '[email protected]', 'get_spam': '0'})
self.assertTrue(f.is_valid())
self.assertTrue(f.cleaned_data.get('get_spam'))
def test_widget_output(self):
# Any Field can have a Widget class passed to its constructor:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea)
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['subject']), '<input type="text" name="subject" required>')
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="10" cols="40" required></textarea>')
# as_textarea(), as_text() and as_hidden() are shortcuts for changing the output
# widget type:
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea name="subject" rows="10" cols="40" required></textarea>',
)
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message">')
# The 'widget' parameter to a Field can also be an instance:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="80" cols="20" required></textarea>')
# Instance-level attrs are *not* carried over to as_textarea(), as_text() and
# as_hidden():
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
f = ContactForm({'subject': 'Hello', 'message': 'I love you.'}, auto_id=False)
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea rows="10" cols="40" name="subject" required>Hello</textarea>'
)
self.assertHTMLEqual(
f['message'].as_text(),
'<input type="text" name="message" value="I love you." required>',
)
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message" value="I love you.">')
def test_forms_with_choices(self):
# For a form with a <select>, use ChoiceField:
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# A subtlety: If one of the choices' value is the empty string and the form is
# unbound, then the <option> for the empty-string choice will get selected.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('', '------'), ('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language" required>
<option value="" selected>------</option>
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
# You can specify widget attributes in the Widget constructor.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=Select(attrs={'class': 'foo'}))
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# When passing a custom widget instance to ChoiceField, note that setting
# 'choices' on the widget is meaningless. The widget will use the choices
# defined on the Field, not the ones defined on the Widget.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[('P', 'Python'), ('J', 'Java')],
widget=Select(choices=[('R', 'Ruby'), ('P', 'Perl')], attrs={'class': 'foo'}),
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# You can set a ChoiceField's choices after the fact.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField()
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
</select>""")
f.fields['language'].choices = [('P', 'Python'), ('J', 'Java')]
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
def test_forms_with_radio(self):
# Add widget=RadioSelect to use that widget with a ChoiceField.
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div>""")
self.assertHTMLEqual(f.as_table(), """<tr><th>Name:</th><td><input type="text" name="name" required></td></tr>
<tr><th>Language:</th><td><div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></td></tr>""")
self.assertHTMLEqual(f.as_ul(), """<li>Name: <input type="text" name="name" required></li>
<li>Language: <div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></li>""")
# Regarding auto_id and <label>, RadioSelect is a special case. Each radio button
# gets a distinct ID, formed by appending an underscore plus the button's
# zero-based index.
f = FrameworkForm(auto_id='id_%s')
self.assertHTMLEqual(
str(f['language']),
"""<div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div>"""
)
# When RadioSelect is used with auto_id, and the whole form is printed
# using either as_table() or as_ul(), the label for the RadioSelect
# will **not** point to the ID of the *first* radio button to improve
# accessibility for screen reader users.
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><label for="id_name">Name:</label></th><td><input type="text" name="name" id="id_name" required></td></tr>
<tr><th><label>Language:</label></th><td><div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></li>"""
)
self.assertHTMLEqual(
f.as_p(),
"""<p><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></p>
<p><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></p>"""
)
def test_form_with_iterable_boundfield(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm(auto_id=False)
self.assertHTMLEqual(
'\n'.join(str(bf) for bf in f['name']),
"""<label><input type="radio" name="name" value="john" required> John</label>
<label><input type="radio" name="name" value="paul" required> Paul</label>
<label><input type="radio" name="name" value="george" required> George</label>
<label><input type="radio" name="name" value="ringo" required> Ringo</label>"""
)
self.assertHTMLEqual(
'\n'.join('<div>%s</div>' % bf for bf in f['name']),
"""<div><label><input type="radio" name="name" value="john" required> John</label></div>
<div><label><input type="radio" name="name" value="paul" required> Paul</label></div>
<div><label><input type="radio" name="name" value="george" required> George</label></div>
<div><label><input type="radio" name="name" value="ringo" required> Ringo</label></div>"""
)
def test_form_with_iterable_boundfield_id(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
fields = list(BeatleForm()['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, 'id_name_0')
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(
fields[0].tag(),
'<input type="radio" name="name" value="john" id="id_name_0" required>'
)
self.assertHTMLEqual(
str(fields[0]),
'<label for="id_name_0"><input type="radio" name="name" '
'value="john" id="id_name_0" required> John</label>'
)
self.assertEqual(fields[1].id_for_label, 'id_name_1')
self.assertEqual(fields[1].choice_label, 'Paul')
self.assertHTMLEqual(
fields[1].tag(),
'<input type="radio" name="name" value="paul" id="id_name_1" required>'
)
self.assertHTMLEqual(
str(fields[1]),
'<label for="id_name_1"><input type="radio" name="name" '
'value="paul" id="id_name_1" required> Paul</label>'
)
def test_iterable_boundfield_select(self):
class BeatleForm(Form):
name = ChoiceField(choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')])
fields = list(BeatleForm(auto_id=False)['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, None)
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(fields[0].tag(), '<option value="john">John</option>')
self.assertHTMLEqual(str(fields[0]), '<option value="john">John</option>')
def test_form_with_noniterable_boundfield(self):
# You can iterate over any BoundField, not just those with widget=RadioSelect.
class BeatleForm(Form):
name = CharField()
f = BeatleForm(auto_id=False)
self.assertHTMLEqual('\n'.join(str(bf) for bf in f['name']), '<input type="text" name="name" required>')
def test_boundfield_slice(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm()
bf = f['name']
self.assertEqual(
[str(item) for item in bf[1:]],
[str(bf[1]), str(bf[2]), str(bf[3])],
)
def test_boundfield_invalid_index(self):
class TestForm(Form):
name = ChoiceField(choices=[])
field = TestForm()['name']
msg = 'BoundField indices must be integers or slices, not str.'
with self.assertRaisesMessage(TypeError, msg):
field['foo']
def test_boundfield_bool(self):
"""BoundField without any choices (subwidgets) evaluates to True."""
class TestForm(Form):
name = ChoiceField(choices=[])
self.assertIs(bool(TestForm()['name']), True)
def test_forms_with_multiple_choice(self):
# MultipleChoiceField is a special case, as its data is required to be a list:
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField()
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
</select>""")
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P">Paul McCartney</option>
</select>""")
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(str(f['name']), '<input type="text" name="name" value="Yesterday" required>')
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P" selected>Paul McCartney</option>
</select>""")
def test_form_with_disabled_fields(self):
class PersonForm(Form):
name = CharField()
birthday = DateField(disabled=True)
class PersonFormFieldInitial(Form):
name = CharField()
birthday = DateField(disabled=True, initial=datetime.date(1974, 8, 16))
# Disabled fields are generally not transmitted by user agents.
# The value from the form's initial data is used.
f1 = PersonForm({'name': 'John Doe'}, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial({'name': 'John Doe'})
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Values provided in the form's data are ignored.
data = {'name': 'John Doe', 'birthday': '1984-11-10'}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Initial data remains present on invalid forms.
data = {}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertFalse(form.is_valid())
self.assertEqual(form['birthday'].value(), datetime.date(1974, 8, 16))
def test_hidden_data(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
# MultipleChoiceField rendered as_hidden() is a special case. Because it can
# have multiple values, its as_hidden() renders multiple <input type="hidden">
# tags.
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), '<input type="hidden" name="composers" value="P">')
f = SongForm({'name': 'From Me To You', 'composers': ['P', 'J']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), """<input type="hidden" name="composers" value="P">
<input type="hidden" name="composers" value="J">""")
# DateTimeField rendered as_hidden() is special too
class MessageForm(Form):
when = SplitDateTimeField()
f = MessageForm({'when_0': '1992-01-01', 'when_1': '01:01'})
self.assertTrue(f.is_valid())
self.assertHTMLEqual(
str(f['when']),
'<input type="text" name="when_0" value="1992-01-01" id="id_when_0" required>'
'<input type="text" name="when_1" value="01:01" id="id_when_1" required>'
)
self.assertHTMLEqual(
f['when'].as_hidden(),
'<input type="hidden" name="when_0" value="1992-01-01" id="id_when_0">'
'<input type="hidden" name="when_1" value="01:01" id="id_when_1">'
)
def test_multiple_choice_checkbox(self):
# MultipleChoiceField can also be used with the CheckboxSelectMultiple widget.
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J', 'P']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input checked type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
def test_checkbox_auto_id(self):
# Regarding auto_id, CheckboxSelectMultiple is a special case. Each checkbox
# gets a distinct ID, formed by appending an underscore plus the checkbox's
# zero-based index.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
f = SongForm(auto_id='%s_id')
self.assertHTMLEqual(
str(f['composers']),
"""<div id="composers_id">
<div><label for="composers_id_0">
<input type="checkbox" name="composers" value="J" id="composers_id_0"> John Lennon</label></div>
<div><label for="composers_id_1">
<input type="checkbox" name="composers" value="P" id="composers_id_1"> Paul McCartney</label></div>
</div>"""
)
def test_multiple_choice_list_data(self):
# Data for a MultipleChoiceField should be a list. QueryDict and
# MultiValueDict conveniently work with this.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
data = {'name': 'Yesterday', 'composers': ['J', 'P']}
f = SongForm(data)
self.assertEqual(f.errors, {})
data = QueryDict('name=Yesterday&composers=J&composers=P')
f = SongForm(data)
self.assertEqual(f.errors, {})
data = MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']})
f = SongForm(data)
self.assertEqual(f.errors, {})
# SelectMultiple uses ducktyping so that MultiValueDictLike.getlist()
# is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_multiple_hidden(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
# The MultipleHiddenInput widget renders multiple values as hidden fields.
class SongFormHidden(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=MultipleHiddenInput,
)
f = SongFormHidden(MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']}), auto_id=False)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Name: <input type="text" name="name" value="Yesterday" required>
<input type="hidden" name="composers" value="J">
<input type="hidden" name="composers" value="P"></li>"""
)
# When using CheckboxSelectMultiple, the framework expects a list of input and
# returns a list of input.
f = SongForm({'name': 'Yesterday'}, auto_id=False)
self.assertEqual(f.errors['composers'], ['This field is required.'])
f = SongForm({'name': 'Yesterday', 'composers': ['J']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
f = SongForm({'name': 'Yesterday', 'composers': ['J', 'P']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J', 'P'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
# MultipleHiddenInput uses ducktyping so that
# MultiValueDictLike.getlist() is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_escaping(self):
# Validation errors are HTML-escaped when output as HTML.
class EscapingForm(Form):
special_name = CharField(label="<em>Special</em> Field")
special_safe_name = CharField(label=mark_safe("<em>Special</em> Field"))
def clean_special_name(self):
raise ValidationError("Something's wrong with '%s'" % self.cleaned_data['special_name'])
def clean_special_safe_name(self):
raise ValidationError(
mark_safe("'<b>%s</b>' is a safe string" % self.cleaned_data['special_safe_name'])
)
f = EscapingForm({
'special_name':
"Nothing to escape",
'special_safe_name': "Nothing to escape",
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Nothing to escape'</li></ul>
<input type="text" name="special_name" value="Nothing to escape" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b>Nothing to escape</b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="Nothing to escape" required></td></tr>"""
)
f = EscapingForm({
'special_name': "Should escape < & > and <script>alert('xss')</script>",
'special_safe_name': "<i>Do not escape</i>"
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Should escape < & > and
<script>alert('xss')</script>'</li></ul>
<input type="text" name="special_name"
value="Should escape < & > and <script>alert('xss')</script>" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b><i>Do not escape</i></b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="<i>Do not escape</i>" required></td></tr>"""
)
def test_validating_multiple_fields(self):
# There are a couple of ways to do multiple-field validation. If you want the
# validation message to be associated with a particular field, implement the
# clean_XXX() method on the Form, where XXX is the field name. As in
# Field.clean(), the clean_XXX() method should return the cleaned value. In the
# clean_XXX() method, you have access to self.cleaned_data, which is a dictionary
# of all the data that has been cleaned *so far*, in order by the fields,
# including the current field (e.g., the field XXX if you're in clean_XXX()).
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean_password2(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data['password2']
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['password2'], ['Please make sure your passwords match.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
# Another way of doing multiple-field validation is by implementing the
# Form's clean() method. Usually ValidationError raised by that method
# will not be associated with a particular field and will have a
# special-case association with the field named '__all__'. It's
# possible to associate the errors to particular field with the
# Form.add_error() method or by passing a dictionary that maps each
# field to one or more errors.
#
# Note that in Form.clean(), you have access to self.cleaned_data, a
# dictionary of all the fields/values that have *not* raised a
# ValidationError. Also note Form.clean() is required to return a
# dictionary of all clean data.
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
# Test raising a ValidationError as NON_FIELD_ERRORS.
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
# Test raising ValidationError that targets multiple fields.
errors = {}
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE':
errors['password1'] = 'Forbidden value.'
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE':
errors['password2'] = ['Forbidden value.']
if errors:
raise ValidationError(errors)
# Test Form.add_error()
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE2':
self.add_error(None, 'Non-field error 1.')
self.add_error('password1', 'Forbidden value 2.')
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE2':
self.add_error('password2', 'Forbidden value 2.')
raise ValidationError('Non-field error 2.')
return self.cleaned_data
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th>Username:</th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="username" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password2" required></td></tr>"""
)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Please make sure your passwords match.'])
self.assertHTMLEqual(
f.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>Please make sure your passwords match.</li></ul></td></tr>
<tr><th>Username:</th><td><input type="text" name="username" value="adrian" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><input type="password" name="password2" required></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>Please make sure your passwords match.</li></ul></li>
<li>Username: <input type="text" name="username" value="adrian" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Password2: <input type="password" name="password2" required></li>"""
)
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE',
'password2': 'FORBIDDEN_VALUE',
}, auto_id=False)
self.assertEqual(f.errors['password1'], ['Forbidden value.'])
self.assertEqual(f.errors['password2'], ['Forbidden value.'])
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE2',
'password2': 'FORBIDDEN_VALUE2',
}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Non-field error 1.', 'Non-field error 2.'])
self.assertEqual(f.errors['password1'], ['Forbidden value 2.'])
self.assertEqual(f.errors['password2'], ['Forbidden value 2.'])
with self.assertRaisesMessage(ValueError, "has no field named"):
f.add_error('missing_field', 'Some error.')
def test_update_error_dict(self):
class CodeForm(Form):
code = CharField(max_length=10)
def clean(self):
try:
raise ValidationError({'code': [ValidationError('Code error 1.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': [ValidationError('Code error 2.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': forms.ErrorList(['Code error 3.'])})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError('Non-field error 1.')
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError([ValidationError('Non-field error 2.')])
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
# The newly added list of errors is an instance of ErrorList.
for field, error_list in self._errors.items():
if not isinstance(error_list, self.error_class):
self._errors[field] = self.error_class(error_list)
form = CodeForm({'code': 'hello'})
# Trigger validation.
self.assertFalse(form.is_valid())
# update_error_dict didn't lose track of the ErrorDict type.
self.assertIsInstance(form._errors, forms.ErrorDict)
self.assertEqual(dict(form.errors), {
'code': ['Code error 1.', 'Code error 2.', 'Code error 3.'],
NON_FIELD_ERRORS: ['Non-field error 1.', 'Non-field error 2.'],
})
def test_has_error(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput, min_length=5)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError(
'Please make sure your passwords match.',
code='password_mismatch',
)
f = UserRegistration(data={})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'required'))
self.assertFalse(f.has_error('password1', 'anything'))
f = UserRegistration(data={'password1': 'Hi', 'password2': 'Hi'})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'min_length'))
self.assertFalse(f.has_error('password1', 'anything'))
self.assertFalse(f.has_error('password2'))
self.assertFalse(f.has_error('password2', 'anything'))
f = UserRegistration(data={'password1': 'Bonjour', 'password2': 'Hello'})
self.assertFalse(f.has_error('password1'))
self.assertFalse(f.has_error('password1', 'required'))
self.assertTrue(f.has_error(NON_FIELD_ERRORS))
self.assertTrue(f.has_error(NON_FIELD_ERRORS, 'password_mismatch'))
self.assertFalse(f.has_error(NON_FIELD_ERRORS, 'anything'))
def test_html_output_with_hidden_input_field_errors(self):
class TestForm(Form):
hidden_input = CharField(widget=HiddenInput)
def clean(self):
self.add_error(None, 'Form error')
f = TestForm(data={})
error_dict = {
'hidden_input': ['This field is required.'],
'__all__': ['Form error'],
}
self.assertEqual(f.errors, error_dict)
f.as_table()
self.assertEqual(f.errors, error_dict)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<input type="hidden" name="hidden_input" id="id_hidden_input"></td></tr>',
)
self.assertHTMLEqual(
f.as_ul(),
'<li><ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<input type="hidden" name="hidden_input" id="id_hidden_input"></li>',
)
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<p><input type="hidden" name="hidden_input" id="id_hidden_input"></p>',
)
def test_dynamic_construction(self):
# It's possible to construct a Form dynamically by adding to the self.fields
# dictionary in __init__(). Don't forget to call Form.__init__() within the
# subclass' __init__().
class Person(Form):
first_name = CharField()
last_name = CharField()
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['birthday'] = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" required></td></tr>"""
)
# Instances of a dynamic Form do not persist fields from one Form instance to
# the next.
class MyForm(Form):
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
class MyForm(Form):
default_field_1 = CharField()
default_field_2 = CharField()
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
# Similarly, changes to field attributes do not persist from one Form instance
# to the next.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
def __init__(self, names_required=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if names_required:
self.fields['first_name'].required = True
self.fields['first_name'].widget.attrs['class'] = 'required'
self.fields['last_name'].required = True
self.fields['last_name'].widget.attrs['class'] = 'required'
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
f = Person(names_required=True)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (True, True))
self.assertEqual(
f['first_name'].field.widget.attrs,
f['last_name'].field.widget.attrs,
({'class': 'reuired'}, {'class': 'required'})
)
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
class Person(Form):
first_name = CharField(max_length=30)
last_name = CharField(max_length=30)
def __init__(self, name_max_length=None, *args, **kwargs):
super().__init__(*args, **kwargs)
if name_max_length:
self.fields['first_name'].max_length = name_max_length
self.fields['last_name'].max_length = name_max_length
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
f = Person(name_max_length=20)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (20, 20))
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
# Similarly, choices do not persist from one Form instance to the next.
# Refs #15127.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
gender = ChoiceField(choices=(('f', 'Female'), ('m', 'Male')))
def __init__(self, allow_unspec_gender=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if allow_unspec_gender:
self.fields['gender'].choices += (('u', 'Unspecified'),)
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
f = Person(allow_unspec_gender=True)
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male'), ('u', 'Unspecified')])
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
def test_validators_independence(self):
"""
The list of form field validators can be modified without polluting
other forms.
"""
class MyForm(Form):
myfield = CharField(max_length=25)
f1 = MyForm()
f2 = MyForm()
f1.fields['myfield'].validators[0] = MaxValueValidator(12)
self.assertNotEqual(f1.fields['myfield'].validators[0], f2.fields['myfield'].validators[0])
def test_hidden_widget(self):
# HiddenInput widgets are displayed differently in the as_table(), as_ul())
# and as_p() output of a Form -- their verbose names are not displayed, and a
# separate row is not displayed. They're displayed in the last row of the
# form, directly after that row's form element.
class Person(Form):
first_name = CharField()
last_name = CharField()
hidden_text = CharField(widget=HiddenInput)
birthday = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th>
<td><input type="text" name="birthday" required><input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(), """<p>First name: <input type="text" name="first_name" required></p>
<p>Last name: <input type="text" name="last_name" required></p>
<p>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></p>"""
)
# With auto_id set, a HiddenInput still gets an ID, but it doesn't get a label.
p = Person(auto_id='id_%s')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></p>"""
)
# If a field with a HiddenInput has errors, the as_table() and as_ul() output
# will include the error message(s) with the text "(Hidden field [fieldname]) "
# prepended. This message is displayed at the top of the output, regardless of
# its field's order in the form.
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'}, auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></td></tr>
<tr><th>First name:</th><td><input type="text" name="first_name" value="John" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" value="Lennon" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></li>
<li>First name: <input type="text" name="first_name" value="John" required></li>
<li>Last name: <input type="text" name="last_name" value="Lennon" required></li>
<li>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul>
<p>First name: <input type="text" name="first_name" value="John" required></p>
<p>Last name: <input type="text" name="last_name" value="Lennon" required></p>
<p>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></p>"""
)
# A corner case: It's possible for a form to have only HiddenInputs.
class TestForm(Form):
foo = CharField(widget=HiddenInput)
bar = CharField(widget=HiddenInput)
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_ul(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_p(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
def test_field_order(self):
# A Form's fields are displayed in the same order in which they were defined.
class TestForm(Form):
field1 = CharField()
field2 = CharField()
field3 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field7 = CharField()
field8 = CharField()
field9 = CharField()
field10 = CharField()
field11 = CharField()
field12 = CharField()
field13 = CharField()
field14 = CharField()
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), """<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>
<tr><th>Field5:</th><td><input type="text" name="field5" required></td></tr>
<tr><th>Field6:</th><td><input type="text" name="field6" required></td></tr>
<tr><th>Field7:</th><td><input type="text" name="field7" required></td></tr>
<tr><th>Field8:</th><td><input type="text" name="field8" required></td></tr>
<tr><th>Field9:</th><td><input type="text" name="field9" required></td></tr>
<tr><th>Field10:</th><td><input type="text" name="field10" required></td></tr>
<tr><th>Field11:</th><td><input type="text" name="field11" required></td></tr>
<tr><th>Field12:</th><td><input type="text" name="field12" required></td></tr>
<tr><th>Field13:</th><td><input type="text" name="field13" required></td></tr>
<tr><th>Field14:</th><td><input type="text" name="field14" required></td></tr>""")
def test_explicit_field_order(self):
class TestFormParent(Form):
field1 = CharField()
field2 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field_order = ['field6', 'field5', 'field4', 'field2', 'field1']
class TestForm(TestFormParent):
field3 = CharField()
field_order = ['field2', 'field4', 'field3', 'field5', 'field6']
class TestFormRemove(TestForm):
field1 = None
class TestFormMissing(TestForm):
field_order = ['field2', 'field4', 'field3', 'field5', 'field6', 'field1']
field1 = None
class TestFormInit(TestFormParent):
field3 = CharField()
field_order = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.order_fields(field_order=TestForm.field_order)
p = TestFormParent()
self.assertEqual(list(p.fields), TestFormParent.field_order)
p = TestFormRemove()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestFormMissing()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestForm()
self.assertEqual(list(p.fields), TestFormMissing.field_order)
p = TestFormInit()
order = [*TestForm.field_order, 'field1']
self.assertEqual(list(p.fields), order)
TestForm.field_order = ['unknown']
p = TestForm()
self.assertEqual(list(p.fields), ['field1', 'field2', 'field4', 'field5', 'field6', 'field3'])
def test_form_html_attributes(self):
# Some Field classes have an effect on the HTML attributes of their associated
# Widget. If you set max_length in a CharField and its associated widget is
# either a TextInput or PasswordInput, then the widget's rendered HTML will
# include the "maxlength" attribute.
class UserRegistration(Form):
username = CharField(max_length=10) # uses TextInput by default
password = CharField(max_length=10, widget=PasswordInput)
realname = CharField(max_length=10, widget=TextInput) # redundantly define widget, just to test
address = CharField() # no max_length defined here
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>
<li>Realname: <input type="text" name="realname" maxlength="10" required></li>
<li>Address: <input type="text" name="address" required></li>"""
)
# If you specify a custom "attrs" that includes the "maxlength" attribute,
# the Field's max_length attribute will override whatever "maxlength" you specify
# in "attrs".
class UserRegistration(Form):
username = CharField(max_length=10, widget=TextInput(attrs={'maxlength': 20}))
password = CharField(max_length=10, widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>"""
)
def test_specifying_labels(self):
# You can specify the label for a field by using the 'label' argument to a Field
# class. If you don't specify 'label', Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
class UserRegistration(Form):
username = CharField(max_length=10, label='Your username')
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput, label='Contraseña (de nuevo)')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Your username: <input type="text" name="username" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Contraseña (de nuevo): <input type="password" name="password2" required></li>"""
)
# Labels for as_* methods will only end in a colon if they don't end in other
# punctuation already.
class Questions(Form):
q1 = CharField(label='The first question')
q2 = CharField(label='What is your name?')
q3 = CharField(label='The answer to life is:')
q4 = CharField(label='Answer this question!')
q5 = CharField(label='The last question. Period.')
self.assertHTMLEqual(
Questions(auto_id=False).as_p(),
"""<p>The first question: <input type="text" name="q1" required></p>
<p>What is your name? <input type="text" name="q2" required></p>
<p>The answer to life is: <input type="text" name="q3" required></p>
<p>Answer this question! <input type="text" name="q4" required></p>
<p>The last question. Period. <input type="text" name="q5" required></p>"""
)
self.assertHTMLEqual(
Questions().as_p(),
"""<p><label for="id_q1">The first question:</label> <input type="text" name="q1" id="id_q1" required></p>
<p><label for="id_q2">What is your name?</label> <input type="text" name="q2" id="id_q2" required></p>
<p><label for="id_q3">The answer to life is:</label> <input type="text" name="q3" id="id_q3" required></p>
<p><label for="id_q4">Answer this question!</label> <input type="text" name="q4" id="id_q4" required></p>
<p><label for="id_q5">The last question. Period.</label> <input type="text" name="q5" id="id_q5" required></p>"""
)
# If a label is set to the empty string for a field, that field won't get a label.
class UserRegistration(Form):
username = CharField(max_length=10, label='')
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(p.as_ul(), """<li> <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>""")
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li> <input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
# If label is None, Django will auto-create the label from the field name. This
# is default behavior.
class UserRegistration(Form):
username = CharField(max_length=10, label=None)
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_username">Username:</label>
<input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
def test_label_suffix(self):
# You can specify the 'label_suffix' argument to a Form class to modify the
# punctuation symbol used at the end of a label. By default, the colon (:) is
# used, and is only appended to the label if the label doesn't already end with a
# punctuation symbol: ., !, ? or :. If you specify a different suffix, it will
# be appended regardless of the last character of the label.
class FavoriteForm(Form):
color = CharField(label='Favorite color?')
animal = CharField(label='Favorite animal')
answer = CharField(label='Secret answer', label_suffix=' =')
f = FavoriteForm(auto_id=False)
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal: <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='?')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal? <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='\u2192')
self.assertHTMLEqual(
f.as_ul(),
'<li>Favorite color? <input type="text" name="color" required></li>\n'
'<li>Favorite animal\u2192 <input type="text" name="animal" required></li>\n'
'<li>Secret answer = <input type="text" name="answer" required></li>'
)
def test_initial_data(self):
# You can specify initial data for a field by using the 'initial' argument to a
# Field class. This initial data is displayed when a Form is rendered with *no*
# data. It is not displayed when a Form is rendered with any data (including an
# empty dictionary). Also, the initial value is *not* used if data for a
# particular required field isn't provided.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# Here, we're submitting data, so the initial value will *not* be displayed.
p = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# An 'initial' value is *not* used as a fallback if data is not provided. In this
# example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
def test_dynamic_initial_data(self):
# The previous technique dealt with "hard-coded" initial data, but it's also
# possible to specify initial data after you've already created the Form class
# (i.e., at runtime). Use the 'initial' parameter to the Form constructor. This
# should be a dictionary containing initial values for one or more fields in the
# form, keyed by field name.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(initial={'username': 'stephane'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(), """<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# A dynamic 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': 'django'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
p = UserRegistration(initial={'username': 'babik'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="babik" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
def test_callable_initial_data(self):
# The previous technique dealt with raw values as initial data, but it's also
# possible to specify callable data.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')])
# We need to define functions that get called later.)
def initial_django():
return 'django'
def initial_stephane():
return 'stephane'
def initial_options():
return ['f', 'b']
def initial_other_options():
return ['b', 'w']
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': initial_django}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration(
{'username': 'foo', 'options': ['f', 'b']}, initial={'username': initial_django}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# A callable 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': initial_django, 'options': initial_options})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial=initial_django)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(
choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')],
initial=initial_other_options,
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b" selected>bar</option>
<option value="w" selected>whiz</option>
</select></li>"""
)
p = UserRegistration(initial={'username': initial_stephane, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
def test_get_initial_for_field(self):
now = datetime.datetime(2006, 10, 25, 14, 30, 45, 123456)
class PersonForm(Form):
first_name = CharField(initial='John')
last_name = CharField(initial='Doe')
age = IntegerField()
occupation = CharField(initial=lambda: 'Unknown')
dt_fixed = DateTimeField(initial=now)
dt_callable = DateTimeField(initial=lambda: now)
form = PersonForm(initial={'first_name': 'Jane'})
cases = [
('age', None),
('last_name', 'Doe'),
# Form.initial overrides Field.initial.
('first_name', 'Jane'),
# Callables are evaluated.
('occupation', 'Unknown'),
# Microseconds are removed from datetimes.
('dt_fixed', datetime.datetime(2006, 10, 25, 14, 30, 45)),
('dt_callable', datetime.datetime(2006, 10, 25, 14, 30, 45)),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
field = form.fields[field_name]
actual = form.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def test_changed_data(self):
class Person(Form):
first_name = CharField(initial='Hans')
last_name = CharField(initial='Greatel')
birthday = DateField(initial=datetime.date(1974, 8, 16))
p = Person(data={'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16'})
self.assertTrue(p.is_valid())
self.assertNotIn('first_name', p.changed_data)
self.assertIn('last_name', p.changed_data)
self.assertNotIn('birthday', p.changed_data)
# A field raising ValidationError is always in changed_data
class PedanticField(forms.Field):
def to_python(self, value):
raise ValidationError('Whatever')
class Person2(Person):
pedantic = PedanticField(initial='whatever', show_hidden_initial=True)
p = Person2(data={
'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16',
'initial-pedantic': 'whatever',
})
self.assertFalse(p.is_valid())
self.assertIn('pedantic', p.changed_data)
def test_boundfield_values(self):
# It's possible to get to the value which would be used for rendering
# the widget for a field by using the BoundField's value method.
class UserRegistration(Form):
username = CharField(max_length=10, initial='djangonaut')
password = CharField(widget=PasswordInput)
unbound = UserRegistration()
bound = UserRegistration({'password': 'foo'})
self.assertIsNone(bound['username'].value())
self.assertEqual(unbound['username'].value(), 'djangonaut')
self.assertEqual(bound['password'].value(), 'foo')
self.assertIsNone(unbound['password'].value())
def test_boundfield_initial_called_once(self):
"""
Multiple calls to BoundField().value() in an unbound form should return
the same result each time (#24391).
"""
class MyForm(Form):
name = CharField(max_length=10, initial=uuid.uuid4)
form = MyForm()
name = form['name']
self.assertEqual(name.value(), name.value())
# BoundField is also cached
self.assertIs(form['name'], name)
def test_boundfield_value_disabled_callable_initial(self):
class PersonForm(Form):
name = CharField(initial=lambda: 'John Doe', disabled=True)
# Without form data.
form = PersonForm()
self.assertEqual(form['name'].value(), 'John Doe')
# With form data. As the field is disabled, the value should not be
# affected by the form data.
form = PersonForm({})
self.assertEqual(form['name'].value(), 'John Doe')
def test_custom_boundfield(self):
class CustomField(CharField):
def get_bound_field(self, form, name):
return (form, name)
class SampleForm(Form):
name = CustomField()
f = SampleForm()
self.assertEqual(f['name'], (f, 'name'))
def test_initial_datetime_values(self):
now = datetime.datetime.now()
# Nix microseconds (since they should be ignored). #22502
now_no_ms = now.replace(microsecond=0)
if now == now_no_ms:
now = now.replace(microsecond=1)
def delayed_now():
return now
def delayed_now_time():
return now.time()
class HiddenInputWithoutMicrosec(HiddenInput):
supports_microseconds = False
class TextInputWithoutMicrosec(TextInput):
supports_microseconds = False
class DateTimeForm(Form):
# Test a non-callable.
fixed = DateTimeField(initial=now)
auto_timestamp = DateTimeField(initial=delayed_now)
auto_time_only = TimeField(initial=delayed_now_time)
supports_microseconds = DateTimeField(initial=delayed_now, widget=TextInput)
hi_default_microsec = DateTimeField(initial=delayed_now, widget=HiddenInput)
hi_without_microsec = DateTimeField(initial=delayed_now, widget=HiddenInputWithoutMicrosec)
ti_without_microsec = DateTimeField(initial=delayed_now, widget=TextInputWithoutMicrosec)
unbound = DateTimeForm()
cases = [
('fixed', now_no_ms),
('auto_timestamp', now_no_ms),
('auto_time_only', now_no_ms.time()),
('supports_microseconds', now),
('hi_default_microsec', now),
('hi_without_microsec', now_no_ms),
('ti_without_microsec', now_no_ms),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
actual = unbound[field_name].value()
self.assertEqual(actual, expected)
# Also check get_initial_for_field().
field = unbound.fields[field_name]
actual = unbound.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def get_datetime_form_with_callable_initial(self, disabled, microseconds=0):
class FakeTime:
def __init__(self):
self.elapsed_seconds = 0
def now(self):
self.elapsed_seconds += 1
return datetime.datetime(
2006, 10, 25, 14, 30, 45 + self.elapsed_seconds,
microseconds,
)
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=FakeTime().now, disabled=disabled)
return DateTimeForm({})
def test_datetime_clean_disabled_callable_initial_microseconds(self):
"""
Cleaning a form with a disabled DateTimeField and callable initial
removes microseconds.
"""
form = self.get_datetime_form_with_callable_initial(
disabled=True, microseconds=123456,
)
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {
'dt': datetime.datetime(2006, 10, 25, 14, 30, 46),
})
def test_datetime_clean_disabled_callable_initial_bound_field(self):
"""
The cleaned value for a form with a disabled DateTimeField and callable
initial matches the bound field's cached initial value.
"""
form = self.get_datetime_form_with_callable_initial(disabled=True)
self.assertEqual(form.errors, {})
cleaned = form.cleaned_data['dt']
self.assertEqual(cleaned, datetime.datetime(2006, 10, 25, 14, 30, 46))
bf = form['dt']
self.assertEqual(cleaned, bf.initial)
def test_datetime_changed_data_callable_with_microseconds(self):
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=lambda: datetime.datetime(2006, 10, 25, 14, 30, 45, 123456), disabled=True)
form = DateTimeForm({'dt': '2006-10-25 14:30:45'})
self.assertEqual(form.changed_data, [])
def test_help_text(self):
# You can specify descriptive text for a field by using the 'help_text' argument)
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput, help_text='Wählen Sie mit Bedacht.')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></p>
<p>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>Username:</th><td><input type="text" name="username" maxlength="10" required><br>
<span class="helptext">e.g., [email protected]</span></td></tr>
<tr><th>Password:</th><td><input type="password" name="password" required><br>
<span class="helptext">Wählen Sie mit Bedacht.</span></td></tr>"""
)
# The help text is displayed whether or not data is provided for the form.
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
# help_text is not displayed for hidden fields. It can be used for documentation
# purposes, though.
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput)
next = CharField(widget=HiddenInput, initial='/', help_text='Redirect destination')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<input type="hidden" name="next" value="/"></li>"""
)
def test_subclassing_forms(self):
# You can subclass a Form to add fields. The resulting form subclass will have
# all of the fields of the parent Form, plus whichever fields you define in the
# subclass.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Musician(Person):
instrument = CharField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
m = Musician(auto_id=False)
self.assertHTMLEqual(
m.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Instrument: <input type="text" name="instrument" required></li>"""
)
# Yes, you can subclass multiple forms. The fields are added in the order in
# which the parent classes are listed.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Instrument(Form):
instrument = CharField()
class Beatle(Person, Instrument):
haircut_type = CharField()
b = Beatle(auto_id=False)
self.assertHTMLEqual(b.as_ul(), """<li>Instrument: <input type="text" name="instrument" required></li>
<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Haircut type: <input type="text" name="haircut_type" required></li>""")
def test_forms_with_prefixes(self):
# Sometimes it's necessary to have multiple forms display on the same HTML page,
# or multiple copies of the same form. We can accomplish this with form prefixes.
# Pass the keyword argument 'prefix' to the Form constructor to use this feature.
# This value will be prepended to each HTML form field name. One way to think
# about this is "namespaces for HTML forms". Notice that in the data argument,
# each field's key has the prefix, in this case 'person1', prepended to the
# actual field name.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_person1-first_name">First name:</label>
<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required></li>
<li><label for="id_person1-last_name">Last name:</label>
<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required></li>
<li><label for="id_person1-birthday">Birthday:</label>
<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required></li>"""
)
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required>'
)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
# Let's try submitting some bad data to make sure form.errors and field.errors
# work as expected.
data = {
'person1-first_name': '',
'person1-last_name': '',
'person1-birthday': ''
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertEqual(p['first_name'].errors, ['This field is required.'])
# Accessing a nonexistent field.
with self.assertRaises(KeyError):
p['person1-first_name'].errors
# In this example, the data doesn't have a prefix, but the form requires it, so
# the form doesn't "see" the fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
# With prefixes, a single data dictionary can hold data for multiple instances
# of the same form.
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9',
'person2-first_name': 'Jim',
'person2-last_name': 'Morrison',
'person2-birthday': '1943-12-8'
}
p1 = Person(data, prefix='person1')
self.assertTrue(p1.is_valid())
self.assertEqual(p1.cleaned_data['first_name'], 'John')
self.assertEqual(p1.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p1.cleaned_data['birthday'], datetime.date(1940, 10, 9))
p2 = Person(data, prefix='person2')
self.assertTrue(p2.is_valid())
self.assertEqual(p2.cleaned_data['first_name'], 'Jim')
self.assertEqual(p2.cleaned_data['last_name'], 'Morrison')
self.assertEqual(p2.cleaned_data['birthday'], datetime.date(1943, 12, 8))
# By default, forms append a hyphen between the prefix and the field name, but a
# form can alter that behavior by implementing the add_prefix() method. This
# method takes a field name and returns the prefixed field, according to
# self.prefix.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
def add_prefix(self, field_name):
return '%s-prefix-%s' % (self.prefix, field_name) if self.prefix else field_name
p = Person(prefix='foo')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_foo-prefix-first_name">First name:</label>
<input type="text" name="foo-prefix-first_name" id="id_foo-prefix-first_name" required></li>
<li><label for="id_foo-prefix-last_name">Last name:</label>
<input type="text" name="foo-prefix-last_name" id="id_foo-prefix-last_name" required></li>
<li><label for="id_foo-prefix-birthday">Birthday:</label>
<input type="text" name="foo-prefix-birthday" id="id_foo-prefix-birthday" required></li>"""
)
data = {
'foo-prefix-first_name': 'John',
'foo-prefix-last_name': 'Lennon',
'foo-prefix-birthday': '1940-10-9'
}
p = Person(data, prefix='foo')
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_class_prefix(self):
# Prefix can be also specified at the class level.
class Person(Form):
first_name = CharField()
prefix = 'foo'
p = Person()
self.assertEqual(p.prefix, 'foo')
p = Person(prefix='bar')
self.assertEqual(p.prefix, 'bar')
def test_forms_with_null_boolean(self):
# NullBooleanField is a bit of a special case because its presentation (widget)
# is different than its data. This is handled transparently, though.
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
p = Person({'name': 'Joe'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '1'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '2'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '3'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': True}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': False}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'unknown'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'true'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'false'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
def test_forms_with_file_fields(self):
# FileFields are a special case because they take their data from the request.FILES,
# not request.POST.
class FileForm(Form):
file1 = FileField()
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
f = FileForm(data={}, files={}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>The submitted file is empty.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': 'something that is not a file'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>No file was submitted. Check the '
'encoding type on the form.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'some content')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
self.assertTrue(f.is_valid())
file1 = SimpleUploadedFile('我隻氣墊船裝滿晒鱔.txt', 'मेरी मँडराने वाली नाव सर्पमीनों से भरी ह'.encode())
f = FileForm(data={}, files={'file1': file1}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data should not contain the
# required HTML attribute. The file input is left blank by the user to
# keep the existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_filefield_initial_callable(self):
class FileForm(forms.Form):
file1 = forms.FileField(initial=lambda: 'resume.txt')
f = FileForm({})
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['file1'], 'resume.txt')
def test_filefield_with_fileinput_required(self):
class FileForm(Form):
file1 = forms.FileField(widget=FileInput)
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data doesn't contain the required
# HTML attribute. The file input is left blank by the user to keep the
# existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_empty_permitted(self):
# Sometimes (pretty much in formsets) we want to allow a form to pass validation
# if it is completely empty. We can accomplish this by using the empty_permitted
# argument to a form constructor.
class SongForm(Form):
artist = CharField()
name = CharField()
# First let's show what happens id empty_permitted=False (the default):
data = {'artist': '', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.'], 'artist': ['This field is required.']})
self.assertEqual(form.cleaned_data, {})
# Now let's show what happens when empty_permitted=True and the form is empty.
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {})
# But if we fill in data for one of the fields, the form is no longer empty and
# the whole thing must pass validation.
data = {'artist': 'The Doors', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.']})
self.assertEqual(form.cleaned_data, {'artist': 'The Doors'})
# If a field is not given in the data then None is returned for its data. Lets
# make sure that when checking for empty_permitted that None is treated
# accordingly.
data = {'artist': None, 'song': ''}
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
# However, we *really* need to be sure we are checking for None as any data in
# initial that returns False on a boolean call needs to be treated literally.
class PriceForm(Form):
amount = FloatField()
qty = IntegerField()
data = {'amount': '0.0', 'qty': ''}
form = PriceForm(data, initial={'amount': 0.0}, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
def test_empty_permitted_and_use_required_attribute(self):
msg = (
'The empty_permitted and use_required_attribute arguments may not '
'both be True.'
)
with self.assertRaisesMessage(ValueError, msg):
Person(empty_permitted=True, use_required_attribute=True)
def test_extracting_hidden_and_visible(self):
class SongForm(Form):
token = CharField(widget=HiddenInput)
artist = CharField()
name = CharField()
form = SongForm()
self.assertEqual([f.name for f in form.hidden_fields()], ['token'])
self.assertEqual([f.name for f in form.visible_fields()], ['artist', 'name'])
def test_hidden_initial_gets_id(self):
class MyForm(Form):
field1 = CharField(max_length=50, show_hidden_initial=True)
self.assertHTMLEqual(
MyForm().as_table(),
'<tr><th><label for="id_field1">Field1:</label></th>'
'<td><input id="id_field1" type="text" name="field1" maxlength="50" required>'
'<input type="hidden" name="initial-field1" id="initial-id_field1"></td></tr>'
)
def test_error_html_required_html_classes(self):
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
email = EmailField(required=False)
age = IntegerField()
p = Person({})
p.error_css_class = 'error'
p.required_css_class = 'required'
self.assertHTMLEqual(
p.as_ul(),
"""<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></li>
<li><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></li>
<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_age">Age:</label> <input type="number" name="age" id="id_age" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_name">Name:</label>
<input type="text" name="name" id="id_name" required></p>
<p class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></p>
<p><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_age">Age:</label>
<input type="number" name="age" id="id_age" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr class="required error">
<th><label class="required" for="id_name">Name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="name" id="id_name" required></td></tr>
<tr class="required"><th><label class="required" for="id_is_cool">Is cool:</label></th>
<td><select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></td></tr>
<tr><th><label for="id_email">Email:</label></th><td>
<input type="email" name="email" id="id_email"></td></tr>
<tr class="required error"><th><label class="required" for="id_age">Age:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="number" name="age" id="id_age" required></td></tr>"""
)
def test_label_has_required_css_class(self):
"""
#17922 - required_css_class is added to the label_tag() of required fields.
"""
class SomeForm(Form):
required_css_class = 'required'
field = CharField(max_length=10)
field2 = IntegerField(required=False)
f = SomeForm({'field': 'test'})
self.assertHTMLEqual(f['field'].label_tag(), '<label for="id_field" class="required">Field:</label>')
self.assertHTMLEqual(
f['field'].label_tag(attrs={'class': 'foo'}),
'<label for="id_field" class="foo required">Field:</label>'
)
self.assertHTMLEqual(f['field2'].label_tag(), '<label for="id_field2">Field2:</label>')
def test_label_split_datetime_not_displayed(self):
class EventForm(Form):
happened_at = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
form = EventForm()
self.assertHTMLEqual(
form.as_ul(),
'<input type="hidden" name="happened_at_0" id="id_happened_at_0">'
'<input type="hidden" name="happened_at_1" id="id_happened_at_1">'
)
def test_multivalue_field_validation(self):
def bad_names(value):
if value == 'bad value':
raise ValidationError('bad value not allowed')
class NameField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (CharField(label='First name', max_length=10),
CharField(label='Last name', max_length=10))
super().__init__(fields=fields, *args, **kwargs)
def compress(self, data_list):
return ' '.join(data_list)
class NameForm(Form):
name = NameField(validators=[bad_names])
form = NameForm(data={'name': ['bad', 'value']})
form.full_clean()
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['bad value not allowed']})
form = NameForm(data={'name': ['should be overly', 'long for the field names']})
self.assertFalse(form.is_valid())
self.assertEqual(
form.errors, {
'name': [
'Ensure this value has at most 10 characters (it has 16).',
'Ensure this value has at most 10 characters (it has 24).',
],
}
)
form = NameForm(data={'name': ['fname', 'lname']})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {'name': 'fname lname'})
def test_multivalue_deep_copy(self):
"""
#19298 -- MultiValueField needs to override the default as it needs
to deep-copy subfields:
"""
class ChoicesField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (
ChoiceField(label='Rank', choices=((1, 1), (2, 2))),
CharField(label='Name', max_length=10),
)
super().__init__(fields=fields, *args, **kwargs)
field = ChoicesField()
field2 = copy.deepcopy(field)
self.assertIsInstance(field2, ChoicesField)
self.assertIsNot(field2.fields, field.fields)
self.assertIsNot(field2.fields[0].choices, field.fields[0].choices)
def test_multivalue_initial_data(self):
"""
#23674 -- invalid initial data should not break form.changed_data()
"""
class DateAgeField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (DateField(label="Date"), IntegerField(label="Age"))
super().__init__(fields=fields, *args, **kwargs)
class DateAgeForm(Form):
date_age = DateAgeField()
data = {"date_age": ["1998-12-06", 16]}
form = DateAgeForm(data, initial={"date_age": ["200-10-10", 14]})
self.assertTrue(form.has_changed())
def test_multivalue_optional_subfields(self):
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = (
CharField(label='Country Code', validators=[
RegexValidator(r'^\+[0-9]{1,2}$', message='Enter a valid country code.')]),
CharField(label='Phone Number'),
CharField(label='Extension', error_messages={'incomplete': 'Enter an extension.'}),
CharField(label='Label', required=False, help_text='E.g. home, work.'),
)
super().__init__(fields, *args, **kwargs)
def compress(self, data_list):
if data_list:
return '%s.%s ext. %s (label: %s)' % tuple(data_list)
return None
# An empty value for any field will raise a `required` error on a
# required `MultiValueField`.
f = PhoneField()
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61'])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61', '287654321', '123'])
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# Empty values for fields will NOT raise a `required` error on an
# optional `MultiValueField`
f = PhoneField(required=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
self.assertEqual('+61. ext. (label: )', f.clean(['+61']))
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For a required `MultiValueField` with `require_all_fields=False`, a
# `required` error will only be raised if all fields are empty. Fields
# can individually be required or optional. An empty value for any
# required field will raise an `incomplete` error.
f = PhoneField(require_all_fields=False)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For an optional `MultiValueField` with `require_all_fields=False`, we
# don't get any `required` error but we still get `incomplete` errors.
f = PhoneField(required=False, require_all_fields=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
def test_multivalue_optional_subfields_rendering(self):
class PhoneWidget(MultiWidget):
def __init__(self, attrs=None):
widgets = [TextInput(), TextInput()]
super().__init__(widgets, attrs)
def decompress(self, value):
return [None, None]
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = [CharField(), CharField(required=False)]
super().__init__(fields, *args, **kwargs)
class PhoneForm(Form):
phone1 = PhoneField(widget=PhoneWidget)
phone2 = PhoneField(widget=PhoneWidget, required=False)
phone3 = PhoneField(widget=PhoneWidget, require_all_fields=False)
phone4 = PhoneField(
widget=PhoneWidget, required=False, require_all_fields=False,
)
form = PhoneForm(auto_id=False)
self.assertHTMLEqual(
form.as_p(),
"""
<p>Phone1:<input type="text" name="phone1_0" required><input type="text" name="phone1_1" required></p>
<p>Phone2:<input type="text" name="phone2_0"><input type="text" name="phone2_1"></p>
<p>Phone3:<input type="text" name="phone3_0" required><input type="text" name="phone3_1"></p>
<p>Phone4:<input type="text" name="phone4_0"><input type="text" name="phone4_1"></p>
""",
)
def test_custom_empty_values(self):
"""
Form fields can customize what is considered as an empty value
for themselves (#19997).
"""
class CustomJSONField(CharField):
empty_values = [None, '']
def to_python(self, value):
# Fake json.loads
if value == '{}':
return {}
return super().to_python(value)
class JSONForm(forms.Form):
json = CustomJSONField()
form = JSONForm(data={'json': '{}'})
form.full_clean()
self.assertEqual(form.cleaned_data, {'json': {}})
def test_boundfield_label_tag(self):
class SomeForm(Form):
field = CharField()
boundfield = SomeForm()['field']
testcases = [ # (args, kwargs, expected)
# without anything: just print the <label>
((), {}, '<label for="id_field">Field:</label>'),
# passing just one argument: overrides the field's label
(('custom',), {}, '<label for="id_field">custom:</label>'),
# the overridden label is escaped
(('custom&',), {}, '<label for="id_field">custom&:</label>'),
((mark_safe('custom&'),), {}, '<label for="id_field">custom&:</label>'),
# Passing attrs to add extra attributes on the <label>
((), {'attrs': {'class': 'pretty'}}, '<label for="id_field" class="pretty">Field:</label>')
]
for args, kwargs, expected in testcases:
with self.subTest(args=args, kwargs=kwargs):
self.assertHTMLEqual(boundfield.label_tag(*args, **kwargs), expected)
def test_boundfield_label_tag_no_id(self):
"""
If a widget has no id, label_tag just returns the text with no
surrounding <label>.
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(auto_id='')['field']
self.assertHTMLEqual(boundfield.label_tag(), 'Field:')
self.assertHTMLEqual(boundfield.label_tag('Custom&'), 'Custom&:')
def test_boundfield_label_tag_custom_widget_id_for_label(self):
class CustomIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return 'custom_' + id
class EmptyIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return None
class SomeForm(Form):
custom = CharField(widget=CustomIdForLabelTextInput)
empty = CharField(widget=EmptyIdForLabelTextInput)
form = SomeForm()
self.assertHTMLEqual(form['custom'].label_tag(), '<label for="custom_id_custom">Custom:</label>')
self.assertHTMLEqual(form['empty'].label_tag(), '<label>Empty:</label>')
def test_boundfield_empty_label(self):
class SomeForm(Form):
field = CharField(label='')
boundfield = SomeForm()['field']
self.assertHTMLEqual(boundfield.label_tag(), '<label for="id_field"></label>')
def test_boundfield_id_for_label(self):
class SomeForm(Form):
field = CharField(label='')
self.assertEqual(SomeForm()['field'].id_for_label, 'id_field')
def test_boundfield_id_for_label_override_by_attrs(self):
"""
If an id is provided in `Widget.attrs`, it overrides the generated ID,
unless it is `None`.
"""
class SomeForm(Form):
field = CharField(widget=TextInput(attrs={'id': 'myCustomID'}))
field_none = CharField(widget=TextInput(attrs={'id': None}))
form = SomeForm()
self.assertEqual(form['field'].id_for_label, 'myCustomID')
self.assertEqual(form['field_none'].id_for_label, 'id_field_none')
def test_boundfield_subwidget_id_for_label(self):
"""
If auto_id is provided when initializing the form, the generated ID in
subwidgets must reflect that prefix.
"""
class SomeForm(Form):
field = MultipleChoiceField(
choices=[('a', 'A'), ('b', 'B')],
widget=CheckboxSelectMultiple,
)
form = SomeForm(auto_id='prefix_%s')
subwidgets = form['field'].subwidgets
self.assertEqual(subwidgets[0].id_for_label, 'prefix_field_0')
self.assertEqual(subwidgets[1].id_for_label, 'prefix_field_1')
def test_boundfield_widget_type(self):
class SomeForm(Form):
first_name = CharField()
birthday = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
f = SomeForm()
self.assertEqual(f['first_name'].widget_type, 'text')
self.assertEqual(f['birthday'].widget_type, 'splithiddendatetime')
def test_boundfield_css_classes(self):
form = Person()
field = form['first_name']
self.assertEqual(field.css_classes(), '')
self.assertEqual(field.css_classes(extra_classes=''), '')
self.assertEqual(field.css_classes(extra_classes='test'), 'test')
self.assertEqual(field.css_classes(extra_classes='test test'), 'test')
def test_label_tag_override(self):
"""
BoundField label_suffix (if provided) overrides Form label_suffix
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(label_suffix='!')['field']
self.assertHTMLEqual(boundfield.label_tag(label_suffix='$'), '<label for="id_field">Field$</label>')
def test_field_name(self):
"""#5749 - `field_name` may be used as a key in _html_output()."""
class SomeForm(Form):
some_field = CharField()
def as_p(self):
return self._html_output(
normal_row='<p id="p_%(field_name)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p id="p_some_field"></p>')
def test_field_without_css_classes(self):
"""
`css_classes` may be used as a key in _html_output() (empty classes).
"""
class SomeForm(Form):
some_field = CharField()
def as_p(self):
return self._html_output(
normal_row='<p class="%(css_classes)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p class=""></p>')
def test_field_with_css_class(self):
"""
`css_classes` may be used as a key in _html_output() (class comes
from required_css_class in this case).
"""
class SomeForm(Form):
some_field = CharField()
required_css_class = 'foo'
def as_p(self):
return self._html_output(
normal_row='<p class="%(css_classes)s"></p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(form.as_p(), '<p class="foo"></p>')
def test_field_name_with_hidden_input(self):
"""
BaseForm._html_output() should merge all the hidden input fields and
put them in the last row.
"""
class SomeForm(Form):
hidden1 = CharField(widget=HiddenInput)
custom = CharField()
hidden2 = CharField(widget=HiddenInput)
def as_p(self):
return self._html_output(
normal_row='<p%(html_class_attr)s>%(field)s %(field_name)s</p>',
error_row='%s',
row_ender='</p>',
help_text_html=' %s',
errors_on_separate_row=True,
)
form = SomeForm()
self.assertHTMLEqual(
form.as_p(),
'<p><input id="id_custom" name="custom" type="text" required> custom'
'<input id="id_hidden1" name="hidden1" type="hidden">'
'<input id="id_hidden2" name="hidden2" type="hidden"></p>'
)
def test_field_name_with_hidden_input_and_non_matching_row_ender(self):
"""
BaseForm._html_output() should merge all the hidden input fields and
put them in the last row ended with the specific row ender.
"""
class SomeForm(Form):
hidden1 = CharField(widget=HiddenInput)
custom = CharField()
hidden2 = CharField(widget=HiddenInput)
def as_p(self):
return self._html_output(
normal_row='<p%(html_class_attr)s>%(field)s %(field_name)s</p>',
error_row='%s',
row_ender='<hr><hr>',
help_text_html=' %s',
errors_on_separate_row=True
)
form = SomeForm()
self.assertHTMLEqual(
form.as_p(),
'<p><input id="id_custom" name="custom" type="text" required> custom</p>\n'
'<input id="id_hidden1" name="hidden1" type="hidden">'
'<input id="id_hidden2" name="hidden2" type="hidden"><hr><hr>'
)
def test_error_dict(self):
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError('Non-field error.', code='secret', params={'a': 1, 'b': 2})
form = MyForm({})
self.assertIs(form.is_valid(), False)
errors = form.errors.as_text()
control = [
'* foo\n * This field is required.',
'* bar\n * This field is required.',
'* __all__\n * Non-field error.',
]
for error in control:
self.assertIn(error, errors)
errors = form.errors.as_ul()
control = [
'<li>foo<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>bar<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>__all__<ul class="errorlist nonfield"><li>Non-field error.</li></ul></li>',
]
for error in control:
self.assertInHTML(error, errors)
errors = form.errors.get_json_data()
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': 'Non-field error.'}]
}
self.assertEqual(errors, control)
self.assertEqual(json.dumps(errors), form.errors.as_json())
def test_error_dict_as_json_escape_html(self):
"""#21962 - adding html escape flag to ErrorDict"""
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError(
'<p>Non-field error.</p>',
code='secret',
params={'a': 1, 'b': 2},
)
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': '<p>Non-field error.</p>'}]
}
form = MyForm({})
self.assertFalse(form.is_valid())
errors = json.loads(form.errors.as_json())
self.assertEqual(errors, control)
escaped_error = '<p>Non-field error.</p>'
self.assertEqual(
form.errors.get_json_data(escape_html=True)['__all__'][0]['message'],
escaped_error
)
errors = json.loads(form.errors.as_json(escape_html=True))
control['__all__'][0]['message'] = escaped_error
self.assertEqual(errors, control)
def test_error_list(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertIsInstance(e, list)
self.assertIn('Foo', e)
self.assertIn('Foo', ValidationError(e))
self.assertEqual(
e.as_text(),
'* Foo\n* Foobar'
)
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
errors = e.get_json_data()
self.assertEqual(
errors,
[{"message": "Foo", "code": ""}, {"message": "Foobar", "code": "foobar"}]
)
self.assertEqual(json.dumps(errors), e.as_json())
def test_error_list_class_not_specified(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_class_has_one_class_specified(self):
e = ErrorList(error_class='foobar-error-class')
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist foobar-error-class"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_with_hidden_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField(widget=HiddenInput)
p = Person({'first_name': 'John'})
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></li><li>
<label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field last_name) This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></td></tr>"""
)
def test_error_list_with_non_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField()
def clean(self):
raise ValidationError('Generic validation error')
p = Person({'first_name': 'John', 'last_name': 'Lennon'})
self.assertHTMLEqual(
str(p.non_field_errors()),
'<ul class="errorlist nonfield"><li>Generic validation error</li></ul>'
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>
<ul class="errorlist nonfield"><li>Generic validation error</li></ul></li>
<li><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></li>
<li><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></li>"""
)
self.assertHTMLEqual(
p.non_field_errors().as_text(),
'* Generic validation error'
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>Generic validation error</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></p>
<p><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield"><li>Generic validation error</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></td></tr>"""
)
def test_errorlist_override(self):
class DivErrorList(ErrorList):
def __str__(self):
return self.as_divs()
def as_divs(self):
if not self:
return ''
return '<div class="errorlist">%s</div>' % ''.join(
'<div class="error">%s</div>' % e for e in self)
class CommentForm(Form):
name = CharField(max_length=50, required=False)
email = EmailField()
comment = CharField()
data = {'email': 'invalid'}
f = CommentForm(data, auto_id=False, error_class=DivErrorList)
self.assertHTMLEqual(f.as_p(), """<p>Name: <input type="text" name="name" maxlength="50"></p>
<div class="errorlist"><div class="error">Enter a valid email address.</div></div>
<p>Email: <input type="email" name="email" value="invalid" required></p>
<div class="errorlist"><div class="error">This field is required.</div></div>
<p>Comment: <input type="text" name="comment" required></p>""")
def test_error_escaping(self):
class TestForm(Form):
hidden = CharField(widget=HiddenInput(), required=False)
visible = CharField()
def clean_hidden(self):
raise ValidationError('Foo & "bar"!')
clean_visible = clean_hidden
form = TestForm({'hidden': 'a', 'visible': 'b'})
form.is_valid()
self.assertHTMLEqual(
form.as_ul(),
'<li><ul class="errorlist nonfield"><li>(Hidden field hidden) Foo & "bar"!</li></ul></li>'
'<li><ul class="errorlist"><li>Foo & "bar"!</li></ul>'
'<label for="id_visible">Visible:</label> '
'<input type="text" name="visible" value="b" id="id_visible" required>'
'<input type="hidden" name="hidden" value="a" id="id_hidden"></li>'
)
def test_baseform_repr(self):
"""
BaseForm.__repr__() should contain some basic information about the
form.
"""
p = Person()
self.assertEqual(repr(p), "<Person bound=False, valid=Unknown, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertEqual(repr(p), "<Person bound=True, valid=Unknown, fields=(first_name;last_name;birthday)>")
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=True, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=False, fields=(first_name;last_name;birthday)>")
def test_baseform_repr_dont_trigger_validation(self):
"""
BaseForm.__repr__() shouldn't trigger the form validation.
"""
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
repr(p)
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {'first_name': 'John', 'last_name': 'Lennon'})
def test_accessing_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
if not self.errors:
data['username'] = data['username'].lower()
return data
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_nothing_returned(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
self.cleaned_data['username'] = self.cleaned_data['username'].lower()
# don't return anything
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_in_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
# Return a different dict. We have not changed self.cleaned_data.
return {
'username': data['username'].lower(),
'password': 'this_is_not_a_secret',
}
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_multipart_encoded_form(self):
class FormWithoutFile(Form):
username = CharField()
class FormWithFile(Form):
username = CharField()
file = FileField()
class FormWithImage(Form):
image = ImageField()
self.assertFalse(FormWithoutFile().is_multipart())
self.assertTrue(FormWithFile().is_multipart())
self.assertTrue(FormWithImage().is_multipart())
def test_html_safe(self):
class SimpleForm(Form):
username = CharField()
form = SimpleForm()
self.assertTrue(hasattr(SimpleForm, '__html__'))
self.assertEqual(str(form), form.__html__())
self.assertTrue(hasattr(form['username'], '__html__'))
self.assertEqual(str(form['username']), form['username'].__html__())
def test_use_required_attribute_true(self):
class MyForm(Form):
use_required_attribute = True
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text" required></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> '
'<input id="id_f1" maxlength="30" name="f1" type="text" required></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text" required></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th>'
'<td><textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_use_required_attribute_false(self):
class MyForm(Form):
use_required_attribute = False
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text"></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th><td><textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_only_hidden_fields(self):
# A form with *only* hidden fields that has errors is going to be very unusual.
class HiddenForm(Form):
data = IntegerField(widget=HiddenInput)
f = HiddenForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>\n<p> '
'<input type="hidden" name="data" id="id_data"></p>'
)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>'
'<input type="hidden" name="data" id="id_data"></td></tr>'
)
def test_field_named_data(self):
class DataForm(Form):
data = CharField(max_length=10)
f = DataForm({'data': 'xyzzy'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data, {'data': 'xyzzy'})
def test_empty_data_files_multi_value_dict(self):
p = Person()
self.assertIsInstance(p.data, MultiValueDict)
self.assertIsInstance(p.files, MultiValueDict)
def test_field_deep_copy_error_messages(self):
class CustomCharField(CharField):
def __init__(self, **kwargs):
kwargs['error_messages'] = {'invalid': 'Form custom error message.'}
super().__init__(**kwargs)
field = CustomCharField()
field_copy = copy.deepcopy(field)
self.assertIsInstance(field_copy, CustomCharField)
self.assertIsNot(field_copy.error_messages, field.error_messages)
def test_label_does_not_include_new_line(self):
form = Person()
field = form['first_name']
self.assertEqual(
field.label_tag(),
'<label for="id_first_name">First name:</label>',
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_label_attrs_not_localized(self):
form = Person()
field = form['first_name']
self.assertHTMLEqual(
field.label_tag(attrs={'number': 9999}),
'<label number="9999" for="id_first_name">First name:</label>',
)
class CustomRenderer(DjangoTemplates):
pass
class RendererTests(SimpleTestCase):
def test_default(self):
form = Form()
self.assertEqual(form.renderer, get_default_renderer())
def test_kwarg_instance(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_kwarg_class(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_attribute_instance(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
form = CustomForm()
self.assertEqual(form.renderer, CustomForm.default_renderer)
def test_attribute_class(self):
class CustomForm(Form):
default_renderer = CustomRenderer
form = CustomForm()
self.assertIsInstance(form.renderer, CustomForm.default_renderer)
def test_attribute_override(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
custom = CustomRenderer()
form = CustomForm(renderer=custom)
self.assertEqual(form.renderer, custom)
class TemplateTests(SimpleTestCase):
def test_iterate_radios(self):
f = FrameworkForm(auto_id='id_%s')
t = Template(
'{% for radio in form.language %}'
'<div class="myradio">{{ radio }}</div>'
'{% endfor %}'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<div class="myradio"><label for="id_language_0">'
'<input id="id_language_0" name="language" type="radio" value="P" '
'required> Python</label></div>'
'<div class="myradio"><label for="id_language_1">'
'<input id="id_language_1" name="language" type="radio" value="J" '
'required> Java</label></div>',
)
def test_iterate_checkboxes(self):
f = SongForm({'composers': ['J', 'P']}, auto_id=False)
t = Template(
'{% for checkbox in form.composers %}'
'<div class="mycheckbox">{{ checkbox }}</div>'
'{% endfor %}'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="J"> '
'John Lennon</label></div>'
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="P"> '
'Paul McCartney</label></div>',
)
def test_templates_with_forms(self):
class UserRegistration(Form):
username = CharField(max_length=10, help_text=(
"Good luck picking a username that doesn't already exist."
))
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get('password1') and
self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']
):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
# There is full flexibility in displaying form fields in a template.
# Just pass a Form instance to the template, and use "dot" access to
# refer to individual fields. However, this flexibility comes with the
# responsibility of displaying all the errors, including any that might
# not be associated with a particular field.
t = Template(
'<form>'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" maxlength="10" required></label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
f = UserRegistration({'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<ul class="errorlist"><li>This field is required.</li></ul><p>'
'<label>Password: '
'<input type="password" name="password1" required></label></p>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].label to output a field's label. 'label' for a field
# can by specified by using the 'label' argument to a Field class. If
# 'label' is not specified, Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
t = Template(
'<form>'
'<p><label>{{ form.username.label }}: {{ form.username }}</label></p>'
'<p><label>{{ form.password1.label }}: {{ form.password1 }}</label></p>'
'<p><label>{{ form.password2.label }}: {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Username: '
'<input type="text" name="username" maxlength="10" required></label></p>'
'<p><label>Password1: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password2: '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].label_tag to output a field's label with a <label>
# tag wrapped around it, but *only* if the given field has an "id"
# attribute. Recall from above that passing the "auto_id" argument to a
# Form gives each field an "id" attribute.
t = Template(
'<form>'
'<p>{{ form.username.label_tag }} {{ form.username }}</p>'
'<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>'
'<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>'
'<input type="submit" required>'
'</form>'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p>Username: '
'<input type="text" name="username" maxlength="10" required></p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
'</form>',
)
f = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label for="id_username">Username:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" '
'required></p>'
'<p><label for="id_password1">Password1:</label>'
'<input type="password" name="password1" id="id_password1" required></p>'
'<p><label for="id_password2">Password2:</label>'
'<input type="password" name="password2" id="id_password2" required></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].help_text to output a field's help text. If the
# given field does not have help text, nothing will be output.
t = Template(
'<form>'
'<p>{{ form.username.label_tag }} {{ form.username }}<br>'
'{{ form.username.help_text }}</p>'
'<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>'
'<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p>Username: '
'<input type="text" name="username" maxlength="10" required><br>'
'Good luck picking a username that doesn't already exist.</p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
'</form>',
)
self.assertEqual(
Template('{{ form.password1.help_text }}').render(Context({'form': f})),
'',
)
# To display the errors that aren't associated with a particular field
# e.g. the errors caused by Form.clean() -- use
# {{ form.non_field_errors }} in the template. If used on its own, it
# is displayed as a <ul> (or an empty string, if the list of errors is
# empty).
t = Template(
'<form>'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(
{'username': 'django', 'password1': 'foo', 'password2': 'bar'},
auto_id=False,
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
t = Template(
'<form>'
'{{ form.non_field_errors }}'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<ul class="errorlist nonfield">'
'<li>Please make sure your passwords match.</li></ul>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
def test_basic_processing_in_view(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get('password1') and
self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']
):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
def my_function(method, post_data):
if method == 'POST':
form = UserRegistration(post_data, auto_id=False)
else:
form = UserRegistration(auto_id=False)
if form.is_valid():
return 'VALID: %r' % sorted(form.cleaned_data.items())
t = Template(
'<form method="post">'
'<table>'
'{{ form }}'
'</table>'
'<input type="submit" required>'
'</form>'
)
return t.render(Context({'form': form}))
# GET with an empty form and no errors.
self.assertHTMLEqual(
my_function('GET', {}),
'<form method="post">'
'<table>'
'<tr><th>Username:</th><td>'
'<input type="text" name="username" maxlength="10" required></td></tr>'
'<tr><th>Password1:</th><td>'
'<input type="password" name="password1" required></td></tr>'
'<tr><th>Password2:</th><td>'
'<input type="password" name="password2" required></td></tr>'
'</table>'
'<input type="submit" required>'
'</form>',
)
# POST with erroneous data, a redisplayed form, with errors.
self.assertHTMLEqual(
my_function('POST', {
'username': 'this-is-a-long-username',
'password1': 'foo',
'password2': 'bar',
}),
'<form method="post">'
'<table>'
'<tr><td colspan="2"><ul class="errorlist nonfield">'
'<li>Please make sure your passwords match.</li></ul></td></tr>'
'<tr><th>Username:</th><td><ul class="errorlist">'
'<li>Ensure this value has at most 10 characters (it has 23).</li></ul>'
'<input type="text" name="username" '
'value="this-is-a-long-username" maxlength="10" required></td></tr>'
'<tr><th>Password1:</th><td>'
'<input type="password" name="password1" required></td></tr>'
'<tr><th>Password2:</th><td>'
'<input type="password" name="password2" required></td></tr>'
'</table>'
'<input type="submit" required>'
'</form>',
)
# POST with valid data (the success message).
self.assertEqual(
my_function('POST', {
'username': 'adrian',
'password1': 'secret',
'password2': 'secret',
}),
"VALID: [('password1', 'secret'), ('password2', 'secret'), "
"('username', 'adrian')]",
)
|
04c9df565adf9b6c141d1cf0ec16580eecfe126d754b4e2a8def64076caaa4a9 | """
Create SQL statements for QuerySets.
The code in here encapsulates all of the SQL construction so that QuerySets
themselves do not have to (and could be backed by things other than SQL
databases). The abstraction barrier only works one way: this module has to know
all about the internals of models in order to get the information it needs.
"""
import copy
import difflib
import functools
import sys
from collections import Counter, namedtuple
from collections.abc import Iterator, Mapping
from itertools import chain, count, product
from string import ascii_uppercase
from django.core.exceptions import FieldDoesNotExist, FieldError
from django.db import DEFAULT_DB_ALIAS, NotSupportedError, connections
from django.db.models.aggregates import Count
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import (
BaseExpression, Col, Exists, F, OuterRef, Ref, ResolvedOuterRef,
)
from django.db.models.fields import Field
from django.db.models.fields.related_lookups import MultiColSource
from django.db.models.lookups import Lookup
from django.db.models.query_utils import (
Q, check_rel_lookup_compatibility, refs_expression,
)
from django.db.models.sql.constants import INNER, LOUTER, ORDER_DIR, SINGLE
from django.db.models.sql.datastructures import (
BaseTable, Empty, Join, MultiJoin,
)
from django.db.models.sql.where import (
AND, OR, ExtraWhere, NothingNode, WhereNode,
)
from django.utils.functional import cached_property
from django.utils.tree import Node
__all__ = ['Query', 'RawQuery']
def get_field_names_from_opts(opts):
return set(chain.from_iterable(
(f.name, f.attname) if f.concrete else (f.name,)
for f in opts.get_fields()
))
def get_children_from_q(q):
for child in q.children:
if isinstance(child, Node):
yield from get_children_from_q(child)
else:
yield child
JoinInfo = namedtuple(
'JoinInfo',
('final_field', 'targets', 'opts', 'joins', 'path', 'transform_function')
)
class RawQuery:
"""A single raw SQL query."""
def __init__(self, sql, using, params=()):
self.params = params
self.sql = sql
self.using = using
self.cursor = None
# Mirror some properties of a normal query so that
# the compiler can be used to process results.
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.extra_select = {}
self.annotation_select = {}
def chain(self, using):
return self.clone(using)
def clone(self, using):
return RawQuery(self.sql, using, params=self.params)
def get_columns(self):
if self.cursor is None:
self._execute_query()
converter = connections[self.using].introspection.identifier_converter
return [converter(column_meta[0])
for column_meta in self.cursor.description]
def __iter__(self):
# Always execute a new query for a new iterator.
# This could be optimized with a cache at the expense of RAM.
self._execute_query()
if not connections[self.using].features.can_use_chunked_reads:
# If the database can't use chunked reads we need to make sure we
# evaluate the entire query up front.
result = list(self.cursor)
else:
result = self.cursor
return iter(result)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
@property
def params_type(self):
if self.params is None:
return None
return dict if isinstance(self.params, Mapping) else tuple
def __str__(self):
if self.params_type is None:
return self.sql
return self.sql % self.params_type(self.params)
def _execute_query(self):
connection = connections[self.using]
# Adapt parameters to the database, as much as possible considering
# that the target type isn't known. See #17755.
params_type = self.params_type
adapter = connection.ops.adapt_unknown_value
if params_type is tuple:
params = tuple(adapter(val) for val in self.params)
elif params_type is dict:
params = {key: adapter(val) for key, val in self.params.items()}
elif params_type is None:
params = None
else:
raise RuntimeError("Unexpected params type: %s" % params_type)
self.cursor = connection.cursor()
self.cursor.execute(self.sql, params)
ExplainInfo = namedtuple('ExplainInfo', ('format', 'options'))
class Query(BaseExpression):
"""A single SQL query."""
alias_prefix = 'T'
empty_result_set_value = None
subq_aliases = frozenset([alias_prefix])
compiler = 'SQLCompiler'
def __init__(self, model, alias_cols=True):
self.model = model
self.alias_refcount = {}
# alias_map is the most important data structure regarding joins.
# It's used for recording which joins exist in the query and what
# types they are. The key is the alias of the joined table (possibly
# the table name) and the value is a Join-like object (see
# sql.datastructures.Join for more information).
self.alias_map = {}
# Whether to provide alias to columns during reference resolving.
self.alias_cols = alias_cols
# Sometimes the query contains references to aliases in outer queries (as
# a result of split_exclude). Correct alias quoting needs to know these
# aliases too.
# Map external tables to whether they are aliased.
self.external_aliases = {}
self.table_map = {} # Maps table names to list of aliases.
self.default_cols = True
self.default_ordering = True
self.standard_ordering = True
self.used_aliases = set()
self.filter_is_sticky = False
self.subquery = False
# SQL-related attributes
# Select and related select clauses are expressions to use in the
# SELECT clause of the query.
# The select is used for cases where we want to set up the select
# clause to contain other than default fields (values(), subqueries...)
# Note that annotations go to annotations dictionary.
self.select = ()
self.where = WhereNode()
# The group_by attribute can have one of the following forms:
# - None: no group by at all in the query
# - A tuple of expressions: group by (at least) those expressions.
# String refs are also allowed for now.
# - True: group by all select fields of the model
# See compiler.get_group_by() for details.
self.group_by = None
self.order_by = ()
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.distinct = False
self.distinct_fields = ()
self.select_for_update = False
self.select_for_update_nowait = False
self.select_for_update_skip_locked = False
self.select_for_update_of = ()
self.select_for_no_key_update = False
self.select_related = False
# Arbitrary limit for select_related to prevents infinite recursion.
self.max_depth = 5
# Holds the selects defined by a call to values() or values_list()
# excluding annotation_select and extra_select.
self.values_select = ()
# SQL annotation-related attributes
self.annotations = {} # Maps alias -> Annotation Expression
self.annotation_select_mask = None
self._annotation_select_cache = None
# Set combination attributes
self.combinator = None
self.combinator_all = False
self.combined_queries = ()
# These are for extensions. The contents are more or less appended
# verbatim to the appropriate clause.
self.extra = {} # Maps col_alias -> (col_sql, params).
self.extra_select_mask = None
self._extra_select_cache = None
self.extra_tables = ()
self.extra_order_by = ()
# A tuple that is a set of model field names and either True, if these
# are the fields to defer, or False if these are the only fields to
# load.
self.deferred_loading = (frozenset(), True)
self._filtered_relations = {}
self.explain_info = None
@property
def output_field(self):
if len(self.select) == 1:
select = self.select[0]
return getattr(select, 'target', None) or select.field
elif len(self.annotation_select) == 1:
return next(iter(self.annotation_select.values())).output_field
@property
def has_select_fields(self):
return bool(self.select or self.annotation_select_mask or self.extra_select_mask)
@cached_property
def base_table(self):
for alias in self.alias_map:
return alias
def __str__(self):
"""
Return the query as a string of SQL with the parameter values
substituted in (use sql_with_params() to see the unsubstituted string).
Parameter values won't necessarily be quoted correctly, since that is
done by the database interface at execution time.
"""
sql, params = self.sql_with_params()
return sql % params
def sql_with_params(self):
"""
Return the query as an SQL string and the parameters that will be
substituted into the query.
"""
return self.get_compiler(DEFAULT_DB_ALIAS).as_sql()
def __deepcopy__(self, memo):
"""Limit the amount of work when a Query is deepcopied."""
result = self.clone()
memo[id(self)] = result
return result
def get_compiler(self, using=None, connection=None, elide_empty=True):
if using is None and connection is None:
raise ValueError("Need either using or connection")
if using:
connection = connections[using]
return connection.ops.compiler(self.compiler)(self, connection, using, elide_empty)
def get_meta(self):
"""
Return the Options instance (the model._meta) from which to start
processing. Normally, this is self.model._meta, but it can be changed
by subclasses.
"""
return self.model._meta
def clone(self):
"""
Return a copy of the current Query. A lightweight alternative to
to deepcopy().
"""
obj = Empty()
obj.__class__ = self.__class__
# Copy references to everything.
obj.__dict__ = self.__dict__.copy()
# Clone attributes that can't use shallow copy.
obj.alias_refcount = self.alias_refcount.copy()
obj.alias_map = self.alias_map.copy()
obj.external_aliases = self.external_aliases.copy()
obj.table_map = self.table_map.copy()
obj.where = self.where.clone()
obj.annotations = self.annotations.copy()
if self.annotation_select_mask is not None:
obj.annotation_select_mask = self.annotation_select_mask.copy()
if self.combined_queries:
obj.combined_queries = tuple([
query.clone() for query in self.combined_queries
])
# _annotation_select_cache cannot be copied, as doing so breaks the
# (necessary) state in which both annotations and
# _annotation_select_cache point to the same underlying objects.
# It will get re-populated in the cloned queryset the next time it's
# used.
obj._annotation_select_cache = None
obj.extra = self.extra.copy()
if self.extra_select_mask is not None:
obj.extra_select_mask = self.extra_select_mask.copy()
if self._extra_select_cache is not None:
obj._extra_select_cache = self._extra_select_cache.copy()
if self.select_related is not False:
# Use deepcopy because select_related stores fields in nested
# dicts.
obj.select_related = copy.deepcopy(obj.select_related)
if 'subq_aliases' in self.__dict__:
obj.subq_aliases = self.subq_aliases.copy()
obj.used_aliases = self.used_aliases.copy()
obj._filtered_relations = self._filtered_relations.copy()
# Clear the cached_property
try:
del obj.base_table
except AttributeError:
pass
return obj
def chain(self, klass=None):
"""
Return a copy of the current Query that's ready for another operation.
The klass argument changes the type of the Query, e.g. UpdateQuery.
"""
obj = self.clone()
if klass and obj.__class__ != klass:
obj.__class__ = klass
if not obj.filter_is_sticky:
obj.used_aliases = set()
obj.filter_is_sticky = False
if hasattr(obj, '_setup_query'):
obj._setup_query()
return obj
def relabeled_clone(self, change_map):
clone = self.clone()
clone.change_aliases(change_map)
return clone
def _get_col(self, target, field, alias):
if not self.alias_cols:
alias = None
return target.get_col(alias, field)
def rewrite_cols(self, annotation, col_cnt):
# We must make sure the inner query has the referred columns in it.
# If we are aggregating over an annotation, then Django uses Ref()
# instances to note this. However, if we are annotating over a column
# of a related model, then it might be that column isn't part of the
# SELECT clause of the inner query, and we must manually make sure
# the column is selected. An example case is:
# .aggregate(Sum('author__awards'))
# Resolving this expression results in a join to author, but there
# is no guarantee the awards column of author is in the select clause
# of the query. Thus we must manually add the column to the inner
# query.
orig_exprs = annotation.get_source_expressions()
new_exprs = []
for expr in orig_exprs:
# FIXME: These conditions are fairly arbitrary. Identify a better
# method of having expressions decide which code path they should
# take.
if isinstance(expr, Ref):
# Its already a Ref to subquery (see resolve_ref() for
# details)
new_exprs.append(expr)
elif isinstance(expr, (WhereNode, Lookup)):
# Decompose the subexpressions further. The code here is
# copied from the else clause, but this condition must appear
# before the contains_aggregate/is_summary condition below.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
else:
# Reuse aliases of expressions already selected in subquery.
for col_alias, selected_annotation in self.annotation_select.items():
if selected_annotation is expr:
new_expr = Ref(col_alias, expr)
break
else:
# An expression that is not selected the subquery.
if isinstance(expr, Col) or (expr.contains_aggregate and not expr.is_summary):
# Reference column or another aggregate. Select it
# under a non-conflicting alias.
col_cnt += 1
col_alias = '__col%d' % col_cnt
self.annotations[col_alias] = expr
self.append_annotation_mask([col_alias])
new_expr = Ref(col_alias, expr)
else:
# Some other expression not referencing database values
# directly. Its subexpression might contain Cols.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
annotation.set_source_expressions(new_exprs)
return annotation, col_cnt
def get_aggregation(self, using, added_aggregate_names):
"""
Return the dictionary with the values of the existing aggregations.
"""
if not self.annotation_select:
return {}
existing_annotations = [
annotation for alias, annotation
in self.annotations.items()
if alias not in added_aggregate_names
]
# Decide if we need to use a subquery.
#
# Existing annotations would cause incorrect results as get_aggregation()
# must produce just one result and thus must not use GROUP BY. But we
# aren't smart enough to remove the existing annotations from the
# query, so those would force us to use GROUP BY.
#
# If the query has limit or distinct, or uses set operations, then
# those operations must be done in a subquery so that the query
# aggregates on the limit and/or distinct results instead of applying
# the distinct and limit after the aggregation.
if (isinstance(self.group_by, tuple) or self.is_sliced or existing_annotations or
self.distinct or self.combinator):
from django.db.models.sql.subqueries import AggregateQuery
inner_query = self.clone()
inner_query.subquery = True
outer_query = AggregateQuery(self.model, inner_query)
inner_query.select_for_update = False
inner_query.select_related = False
inner_query.set_annotation_mask(self.annotation_select)
# Queries with distinct_fields need ordering and when a limit is
# applied we must take the slice from the ordered query. Otherwise
# no need for ordering.
inner_query.clear_ordering(force=False)
if not inner_query.distinct:
# If the inner query uses default select and it has some
# aggregate annotations, then we must make sure the inner
# query is grouped by the main model's primary key. However,
# clearing the select clause can alter results if distinct is
# used.
has_existing_aggregate_annotations = any(
annotation for annotation in existing_annotations
if getattr(annotation, 'contains_aggregate', True)
)
if inner_query.default_cols and has_existing_aggregate_annotations:
inner_query.group_by = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
inner_query.default_cols = False
relabels = {t: 'subquery' for t in inner_query.alias_map}
relabels[None] = 'subquery'
# Remove any aggregates marked for reduction from the subquery
# and move them to the outer AggregateQuery.
col_cnt = 0
for alias, expression in list(inner_query.annotation_select.items()):
annotation_select_mask = inner_query.annotation_select_mask
if expression.is_summary:
expression, col_cnt = inner_query.rewrite_cols(expression, col_cnt)
outer_query.annotations[alias] = expression.relabeled_clone(relabels)
del inner_query.annotations[alias]
annotation_select_mask.remove(alias)
# Make sure the annotation_select wont use cached results.
inner_query.set_annotation_mask(inner_query.annotation_select_mask)
if inner_query.select == () and not inner_query.default_cols and not inner_query.annotation_select_mask:
# In case of Model.objects[0:3].count(), there would be no
# field selected in the inner query, yet we must use a subquery.
# So, make sure at least one field is selected.
inner_query.select = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
else:
outer_query = self
self.select = ()
self.default_cols = False
self.extra = {}
empty_set_result = [
expression.empty_result_set_value
for expression in outer_query.annotation_select.values()
]
elide_empty = not any(result is NotImplemented for result in empty_set_result)
outer_query.clear_ordering(force=True)
outer_query.clear_limits()
outer_query.select_for_update = False
outer_query.select_related = False
compiler = outer_query.get_compiler(using, elide_empty=elide_empty)
result = compiler.execute_sql(SINGLE)
if result is None:
result = empty_set_result
converters = compiler.get_converters(outer_query.annotation_select.values())
result = next(compiler.apply_converters((result,), converters))
return dict(zip(outer_query.annotation_select, result))
def get_count(self, using):
"""
Perform a COUNT() query using the current filter constraints.
"""
obj = self.clone()
obj.add_annotation(Count('*'), alias='__count', is_summary=True)
number = obj.get_aggregation(using, ['__count'])['__count']
if number is None:
number = 0
return number
def has_filters(self):
return self.where
def exists(self, using, limit=True):
q = self.clone()
if not q.distinct:
if q.group_by is True:
q.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
q.set_group_by(allow_aliases=False)
q.clear_select_clause()
if q.combined_queries and q.combinator == 'union':
limit_combined = connections[using].features.supports_slicing_ordering_in_compound
q.combined_queries = tuple(
combined_query.exists(using, limit=limit_combined)
for combined_query in q.combined_queries
)
q.clear_ordering(force=True)
if limit:
q.set_limits(high=1)
q.add_extra({'a': 1}, None, None, None, None, None)
q.set_extra_mask(['a'])
return q
def has_results(self, using):
q = self.exists(using)
compiler = q.get_compiler(using=using)
return compiler.has_results()
def explain(self, using, format=None, **options):
q = self.clone()
q.explain_info = ExplainInfo(format, options)
compiler = q.get_compiler(using=using)
return '\n'.join(compiler.explain_query())
def combine(self, rhs, connector):
"""
Merge the 'rhs' query into the current one (with any 'rhs' effects
being applied *after* (that is, "to the right of") anything in the
current query. 'rhs' is not modified during a call to this function.
The 'connector' parameter describes how to connect filters from the
'rhs' query.
"""
if self.model != rhs.model:
raise TypeError('Cannot combine queries on two different base models.')
if self.is_sliced:
raise TypeError('Cannot combine queries once a slice has been taken.')
if self.distinct != rhs.distinct:
raise TypeError('Cannot combine a unique query with a non-unique query.')
if self.distinct_fields != rhs.distinct_fields:
raise TypeError('Cannot combine queries with different distinct fields.')
# Work out how to relabel the rhs aliases, if necessary.
change_map = {}
conjunction = (connector == AND)
# Determine which existing joins can be reused. When combining the
# query with AND we must recreate all joins for m2m filters. When
# combining with OR we can reuse joins. The reason is that in AND
# case a single row can't fulfill a condition like:
# revrel__col=1 & revrel__col=2
# But, there might be two different related rows matching this
# condition. In OR case a single True is enough, so single row is
# enough, too.
#
# Note that we will be creating duplicate joins for non-m2m joins in
# the AND case. The results will be correct but this creates too many
# joins. This is something that could be fixed later on.
reuse = set() if conjunction else set(self.alias_map)
# Base table must be present in the query - this is the same
# table on both sides.
self.get_initial_alias()
joinpromoter = JoinPromoter(connector, 2, False)
joinpromoter.add_votes(
j for j in self.alias_map if self.alias_map[j].join_type == INNER)
rhs_votes = set()
# Now, add the joins from rhs query into the new query (skipping base
# table).
rhs_tables = list(rhs.alias_map)[1:]
for alias in rhs_tables:
join = rhs.alias_map[alias]
# If the left side of the join was already relabeled, use the
# updated alias.
join = join.relabeled_clone(change_map)
new_alias = self.join(join, reuse=reuse)
if join.join_type == INNER:
rhs_votes.add(new_alias)
# We can't reuse the same join again in the query. If we have two
# distinct joins for the same connection in rhs query, then the
# combined query must have two joins, too.
reuse.discard(new_alias)
if alias != new_alias:
change_map[alias] = new_alias
if not rhs.alias_refcount[alias]:
# The alias was unused in the rhs query. Unref it so that it
# will be unused in the new query, too. We have to add and
# unref the alias so that join promotion has information of
# the join type for the unused alias.
self.unref_alias(new_alias)
joinpromoter.add_votes(rhs_votes)
joinpromoter.update_join_types(self)
# Combine subqueries aliases to ensure aliases relabelling properly
# handle subqueries when combining where and select clauses.
self.subq_aliases |= rhs.subq_aliases
# Now relabel a copy of the rhs where-clause and add it to the current
# one.
w = rhs.where.clone()
w.relabel_aliases(change_map)
self.where.add(w, connector)
# Selection columns and extra extensions are those provided by 'rhs'.
if rhs.select:
self.set_select([col.relabeled_clone(change_map) for col in rhs.select])
else:
self.select = ()
if connector == OR:
# It would be nice to be able to handle this, but the queries don't
# really make sense (or return consistent value sets). Not worth
# the extra complexity when you can write a real query instead.
if self.extra and rhs.extra:
raise ValueError("When merging querysets using 'or', you cannot have extra(select=...) on both sides.")
self.extra.update(rhs.extra)
extra_select_mask = set()
if self.extra_select_mask is not None:
extra_select_mask.update(self.extra_select_mask)
if rhs.extra_select_mask is not None:
extra_select_mask.update(rhs.extra_select_mask)
if extra_select_mask:
self.set_extra_mask(extra_select_mask)
self.extra_tables += rhs.extra_tables
# Ordering uses the 'rhs' ordering, unless it has none, in which case
# the current ordering is used.
self.order_by = rhs.order_by or self.order_by
self.extra_order_by = rhs.extra_order_by or self.extra_order_by
def deferred_to_data(self, target, callback):
"""
Convert the self.deferred_loading data structure to an alternate data
structure, describing the field that *will* be loaded. This is used to
compute the columns to select from the database and also by the
QuerySet class to work out which fields are being initialized on each
model. Models that have all their fields included aren't mentioned in
the result, only those that have field restrictions in place.
The "target" parameter is the instance that is populated (in place).
The "callback" is a function that is called whenever a (model, field)
pair need to be added to "target". It accepts three parameters:
"target", and the model and list of fields being added for that model.
"""
field_names, defer = self.deferred_loading
if not field_names:
return
orig_opts = self.get_meta()
seen = {}
must_include = {orig_opts.concrete_model: {orig_opts.pk}}
for field_name in field_names:
parts = field_name.split(LOOKUP_SEP)
cur_model = self.model._meta.concrete_model
opts = orig_opts
for name in parts[:-1]:
old_model = cur_model
if name in self._filtered_relations:
name = self._filtered_relations[name].relation_name
source = opts.get_field(name)
if is_reverse_o2o(source):
cur_model = source.related_model
else:
cur_model = source.remote_field.model
opts = cur_model._meta
# Even if we're "just passing through" this model, we must add
# both the current model's pk and the related reference field
# (if it's not a reverse relation) to the things we select.
if not is_reverse_o2o(source):
must_include[old_model].add(source)
add_to_dict(must_include, cur_model, opts.pk)
field = opts.get_field(parts[-1])
is_reverse_object = field.auto_created and not field.concrete
model = field.related_model if is_reverse_object else field.model
model = model._meta.concrete_model
if model == opts.model:
model = cur_model
if not is_reverse_o2o(field):
add_to_dict(seen, model, field)
if defer:
# We need to load all fields for each model, except those that
# appear in "seen" (for all models that appear in "seen"). The only
# slight complexity here is handling fields that exist on parent
# models.
workset = {}
for model, values in seen.items():
for field in model._meta.local_fields:
if field not in values:
m = field.model._meta.concrete_model
add_to_dict(workset, m, field)
for model, values in must_include.items():
# If we haven't included a model in workset, we don't add the
# corresponding must_include fields for that model, since an
# empty set means "include all fields". That's why there's no
# "else" branch here.
if model in workset:
workset[model].update(values)
for model, values in workset.items():
callback(target, model, values)
else:
for model, values in must_include.items():
if model in seen:
seen[model].update(values)
else:
# As we've passed through this model, but not explicitly
# included any fields, we have to make sure it's mentioned
# so that only the "must include" fields are pulled in.
seen[model] = values
# Now ensure that every model in the inheritance chain is mentioned
# in the parent list. Again, it must be mentioned to ensure that
# only "must include" fields are pulled in.
for model in orig_opts.get_parent_list():
seen.setdefault(model, set())
for model, values in seen.items():
callback(target, model, values)
def table_alias(self, table_name, create=False, filtered_relation=None):
"""
Return a table alias for the given table_name and whether this is a
new alias or not.
If 'create' is true, a new alias is always created. Otherwise, the
most recently created alias for the table (if one exists) is reused.
"""
alias_list = self.table_map.get(table_name)
if not create and alias_list:
alias = alias_list[0]
self.alias_refcount[alias] += 1
return alias, False
# Create a new alias for this table.
if alias_list:
alias = '%s%d' % (self.alias_prefix, len(self.alias_map) + 1)
alias_list.append(alias)
else:
# The first occurrence of a table uses the table name directly.
alias = filtered_relation.alias if filtered_relation is not None else table_name
self.table_map[table_name] = [alias]
self.alias_refcount[alias] = 1
return alias, True
def ref_alias(self, alias):
"""Increases the reference count for this alias."""
self.alias_refcount[alias] += 1
def unref_alias(self, alias, amount=1):
"""Decreases the reference count for this alias."""
self.alias_refcount[alias] -= amount
def promote_joins(self, aliases):
"""
Promote recursively the join type of given aliases and its children to
an outer join. If 'unconditional' is False, only promote the join if
it is nullable or the parent join is an outer join.
The children promotion is done to avoid join chains that contain a LOUTER
b INNER c. So, if we have currently a INNER b INNER c and a->b is promoted,
then we must also promote b->c automatically, or otherwise the promotion
of a->b doesn't actually change anything in the query results.
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type is None:
# This is the base table (first FROM entry) - this table
# isn't really joined at all in the query, so we should not
# alter its join type.
continue
# Only the first alias (skipped above) should have None join_type
assert self.alias_map[alias].join_type is not None
parent_alias = self.alias_map[alias].parent_alias
parent_louter = parent_alias and self.alias_map[parent_alias].join_type == LOUTER
already_louter = self.alias_map[alias].join_type == LOUTER
if ((self.alias_map[alias].nullable or parent_louter) and
not already_louter):
self.alias_map[alias] = self.alias_map[alias].promote()
# Join type of 'alias' changed, so re-examine all aliases that
# refer to this one.
aliases.extend(
join for join in self.alias_map
if self.alias_map[join].parent_alias == alias and join not in aliases
)
def demote_joins(self, aliases):
"""
Change join type from LOUTER to INNER for all joins in aliases.
Similarly to promote_joins(), this method must ensure no join chains
containing first an outer, then an inner join are generated. If we
are demoting b->c join in chain a LOUTER b LOUTER c then we must
demote a->b automatically, or otherwise the demotion of b->c doesn't
actually change anything in the query results. .
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type == LOUTER:
self.alias_map[alias] = self.alias_map[alias].demote()
parent_alias = self.alias_map[alias].parent_alias
if self.alias_map[parent_alias].join_type == INNER:
aliases.append(parent_alias)
def reset_refcounts(self, to_counts):
"""
Reset reference counts for aliases so that they match the value passed
in `to_counts`.
"""
for alias, cur_refcount in self.alias_refcount.copy().items():
unref_amount = cur_refcount - to_counts.get(alias, 0)
self.unref_alias(alias, unref_amount)
def change_aliases(self, change_map):
"""
Change the aliases in change_map (which maps old-alias -> new-alias),
relabelling any references to them in select columns and the where
clause.
"""
assert set(change_map).isdisjoint(change_map.values())
# 1. Update references in "select" (normal columns plus aliases),
# "group by" and "where".
self.where.relabel_aliases(change_map)
if isinstance(self.group_by, tuple):
self.group_by = tuple([col.relabeled_clone(change_map) for col in self.group_by])
self.select = tuple([col.relabeled_clone(change_map) for col in self.select])
self.annotations = self.annotations and {
key: col.relabeled_clone(change_map) for key, col in self.annotations.items()
}
# 2. Rename the alias in the internal table/alias datastructures.
for old_alias, new_alias in change_map.items():
if old_alias not in self.alias_map:
continue
alias_data = self.alias_map[old_alias].relabeled_clone(change_map)
self.alias_map[new_alias] = alias_data
self.alias_refcount[new_alias] = self.alias_refcount[old_alias]
del self.alias_refcount[old_alias]
del self.alias_map[old_alias]
table_aliases = self.table_map[alias_data.table_name]
for pos, alias in enumerate(table_aliases):
if alias == old_alias:
table_aliases[pos] = new_alias
break
self.external_aliases = {
# Table is aliased or it's being changed and thus is aliased.
change_map.get(alias, alias): (aliased or alias in change_map)
for alias, aliased in self.external_aliases.items()
}
def bump_prefix(self, outer_query):
"""
Change the alias prefix to the next letter in the alphabet in a way
that the outer query's aliases and this query's aliases will not
conflict. Even tables that previously had no alias will get an alias
after this call.
"""
def prefix_gen():
"""
Generate a sequence of characters in alphabetical order:
-> 'A', 'B', 'C', ...
When the alphabet is finished, the sequence will continue with the
Cartesian product:
-> 'AA', 'AB', 'AC', ...
"""
alphabet = ascii_uppercase
prefix = chr(ord(self.alias_prefix) + 1)
yield prefix
for n in count(1):
seq = alphabet[alphabet.index(prefix):] if prefix else alphabet
for s in product(seq, repeat=n):
yield ''.join(s)
prefix = None
if self.alias_prefix != outer_query.alias_prefix:
# No clashes between self and outer query should be possible.
return
# Explicitly avoid infinite loop. The constant divider is based on how
# much depth recursive subquery references add to the stack. This value
# might need to be adjusted when adding or removing function calls from
# the code path in charge of performing these operations.
local_recursion_limit = sys.getrecursionlimit() // 16
for pos, prefix in enumerate(prefix_gen()):
if prefix not in self.subq_aliases:
self.alias_prefix = prefix
break
if pos > local_recursion_limit:
raise RecursionError(
'Maximum recursion depth exceeded: too many subqueries.'
)
self.subq_aliases = self.subq_aliases.union([self.alias_prefix])
outer_query.subq_aliases = outer_query.subq_aliases.union(self.subq_aliases)
self.change_aliases({
alias: '%s%d' % (self.alias_prefix, pos)
for pos, alias in enumerate(self.alias_map)
})
def get_initial_alias(self):
"""
Return the first alias for this query, after increasing its reference
count.
"""
if self.alias_map:
alias = self.base_table
self.ref_alias(alias)
else:
alias = self.join(BaseTable(self.get_meta().db_table, None))
return alias
def count_active_tables(self):
"""
Return the number of tables in this query with a non-zero reference
count. After execution, the reference counts are zeroed, so tables
added in compiler will not be seen by this method.
"""
return len([1 for count in self.alias_refcount.values() if count])
def join(self, join, reuse=None):
"""
Return an alias for the 'join', either reusing an existing alias for
that join or creating a new one. 'join' is either a
sql.datastructures.BaseTable or Join.
The 'reuse' parameter can be either None which means all joins are
reusable, or it can be a set containing the aliases that can be reused.
A join is always created as LOUTER if the lhs alias is LOUTER to make
sure chains like t1 LOUTER t2 INNER t3 aren't generated. All new
joins are created as LOUTER if the join is nullable.
"""
reuse_aliases = [
a for a, j in self.alias_map.items()
if (reuse is None or a in reuse) and j.equals(join)
]
if reuse_aliases:
if join.table_alias in reuse_aliases:
reuse_alias = join.table_alias
else:
# Reuse the most recent alias of the joined table
# (a many-to-many relation may be joined multiple times).
reuse_alias = reuse_aliases[-1]
self.ref_alias(reuse_alias)
return reuse_alias
# No reuse is possible, so we need a new alias.
alias, _ = self.table_alias(join.table_name, create=True, filtered_relation=join.filtered_relation)
if join.join_type:
if self.alias_map[join.parent_alias].join_type == LOUTER or join.nullable:
join_type = LOUTER
else:
join_type = INNER
join.join_type = join_type
join.table_alias = alias
self.alias_map[alias] = join
return alias
def join_parent_model(self, opts, model, alias, seen):
"""
Make sure the given 'model' is joined in the query. If 'model' isn't
a parent of 'opts' or if it is None this method is a no-op.
The 'alias' is the root alias for starting the join, 'seen' is a dict
of model -> alias of existing joins. It must also contain a mapping
of None -> some alias. This will be returned in the no-op case.
"""
if model in seen:
return seen[model]
chain = opts.get_base_chain(model)
if not chain:
return alias
curr_opts = opts
for int_model in chain:
if int_model in seen:
curr_opts = int_model._meta
alias = seen[int_model]
continue
# Proxy model have elements in base chain
# with no parents, assign the new options
# object and skip to the next base in that
# case
if not curr_opts.parents[int_model]:
curr_opts = int_model._meta
continue
link_field = curr_opts.get_ancestor_link(int_model)
join_info = self.setup_joins([link_field.name], curr_opts, alias)
curr_opts = int_model._meta
alias = seen[int_model] = join_info.joins[-1]
return alias or seen[None]
def add_annotation(self, annotation, alias, is_summary=False, select=True):
"""Add a single annotation expression to the Query."""
annotation = annotation.resolve_expression(self, allow_joins=True, reuse=None,
summarize=is_summary)
if select:
self.append_annotation_mask([alias])
else:
self.set_annotation_mask(set(self.annotation_select).difference({alias}))
self.annotations[alias] = annotation
def resolve_expression(self, query, *args, **kwargs):
clone = self.clone()
# Subqueries need to use a different set of aliases than the outer query.
clone.bump_prefix(query)
clone.subquery = True
clone.where.resolve_expression(query, *args, **kwargs)
for key, value in clone.annotations.items():
resolved = value.resolve_expression(query, *args, **kwargs)
if hasattr(resolved, 'external_aliases'):
resolved.external_aliases.update(clone.external_aliases)
clone.annotations[key] = resolved
# Outer query's aliases are considered external.
for alias, table in query.alias_map.items():
clone.external_aliases[alias] = (
(isinstance(table, Join) and table.join_field.related_model._meta.db_table != alias) or
(isinstance(table, BaseTable) and table.table_name != table.table_alias)
)
return clone
def get_external_cols(self):
exprs = chain(self.annotations.values(), self.where.children)
return [
col for col in self._gen_cols(exprs, include_external=True)
if col.alias in self.external_aliases
]
def as_sql(self, compiler, connection):
# Some backends (e.g. Oracle) raise an error when a subquery contains
# unnecessary ORDER BY clause.
if (
self.subquery and
not connection.features.ignores_unnecessary_order_by_in_subqueries
):
self.clear_ordering(force=False)
sql, params = self.get_compiler(connection=connection).as_sql()
if self.subquery:
sql = '(%s)' % sql
return sql, params
def resolve_lookup_value(self, value, can_reuse, allow_joins):
if hasattr(value, 'resolve_expression'):
value = value.resolve_expression(
self, reuse=can_reuse, allow_joins=allow_joins,
)
elif isinstance(value, (list, tuple)):
# The items of the iterable may be expressions and therefore need
# to be resolved independently.
values = (
self.resolve_lookup_value(sub_value, can_reuse, allow_joins)
for sub_value in value
)
type_ = type(value)
if hasattr(type_, '_make'): # namedtuple
return type_(*values)
return type_(values)
return value
def solve_lookup_type(self, lookup):
"""
Solve the lookup type from the lookup (e.g.: 'foobar__id__icontains').
"""
lookup_splitted = lookup.split(LOOKUP_SEP)
if self.annotations:
expression, expression_lookups = refs_expression(lookup_splitted, self.annotations)
if expression:
return expression_lookups, (), expression
_, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta())
field_parts = lookup_splitted[0:len(lookup_splitted) - len(lookup_parts)]
if len(lookup_parts) > 1 and not field_parts:
raise FieldError(
'Invalid lookup "%s" for model %s".' %
(lookup, self.get_meta().model.__name__)
)
return lookup_parts, field_parts, False
def check_query_object_type(self, value, opts, field):
"""
Check whether the object passed while querying is of the correct type.
If not, raise a ValueError specifying the wrong object.
"""
if hasattr(value, '_meta'):
if not check_rel_lookup_compatibility(value._meta.model, opts, field):
raise ValueError(
'Cannot query "%s": Must be "%s" instance.' %
(value, opts.object_name))
def check_related_objects(self, field, value, opts):
"""Check the type of object passed to query relations."""
if field.is_relation:
# Check that the field and the queryset use the same model in a
# query like .filter(author=Author.objects.all()). For example, the
# opts would be Author's (from the author field) and value.model
# would be Author.objects.all() queryset's .model (Author also).
# The field is the related field on the lhs side.
if (isinstance(value, Query) and not value.has_select_fields and
not check_rel_lookup_compatibility(value.model, opts, field)):
raise ValueError(
'Cannot use QuerySet for "%s": Use a QuerySet for "%s".' %
(value.model._meta.object_name, opts.object_name)
)
elif hasattr(value, '_meta'):
self.check_query_object_type(value, opts, field)
elif hasattr(value, '__iter__'):
for v in value:
self.check_query_object_type(v, opts, field)
def check_filterable(self, expression):
"""Raise an error if expression cannot be used in a WHERE clause."""
if (
hasattr(expression, 'resolve_expression') and
not getattr(expression, 'filterable', True)
):
raise NotSupportedError(
expression.__class__.__name__ + ' is disallowed in the filter '
'clause.'
)
if hasattr(expression, 'get_source_expressions'):
for expr in expression.get_source_expressions():
self.check_filterable(expr)
def build_lookup(self, lookups, lhs, rhs):
"""
Try to extract transforms and lookup from given lhs.
The lhs value is something that works like SQLExpression.
The rhs value is what the lookup is going to compare against.
The lookups is a list of names to extract using get_lookup()
and get_transform().
"""
# __exact is the default lookup if one isn't given.
*transforms, lookup_name = lookups or ['exact']
for name in transforms:
lhs = self.try_transform(lhs, name)
# First try get_lookup() so that the lookup takes precedence if the lhs
# supports both transform and lookup for the name.
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
if lhs.field.is_relation:
raise FieldError('Related Field got invalid lookup: {}'.format(lookup_name))
# A lookup wasn't found. Try to interpret the name as a transform
# and do an Exact lookup against it.
lhs = self.try_transform(lhs, lookup_name)
lookup_name = 'exact'
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
return
lookup = lookup_class(lhs, rhs)
# Interpret '__exact=None' as the sql 'is NULL'; otherwise, reject all
# uses of None as a query value unless the lookup supports it.
if lookup.rhs is None and not lookup.can_use_none_as_rhs:
if lookup_name not in ('exact', 'iexact'):
raise ValueError("Cannot use None as a query value")
return lhs.get_lookup('isnull')(lhs, True)
# For Oracle '' is equivalent to null. The check must be done at this
# stage because join promotion can't be done in the compiler. Using
# DEFAULT_DB_ALIAS isn't nice but it's the best that can be done here.
# A similar thing is done in is_nullable(), too.
if (
lookup_name == 'exact' and
lookup.rhs == '' and
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls
):
return lhs.get_lookup('isnull')(lhs, True)
return lookup
def try_transform(self, lhs, name):
"""
Helper method for build_lookup(). Try to fetch and initialize
a transform for name parameter from lhs.
"""
transform_class = lhs.get_transform(name)
if transform_class:
return transform_class(lhs)
else:
output_field = lhs.output_field.__class__
suggested_lookups = difflib.get_close_matches(name, output_field.get_lookups())
if suggested_lookups:
suggestion = ', perhaps you meant %s?' % ' or '.join(suggested_lookups)
else:
suggestion = '.'
raise FieldError(
"Unsupported lookup '%s' for %s or join on the field not "
"permitted%s" % (name, output_field.__name__, suggestion)
)
def build_filter(self, filter_expr, branch_negated=False, current_negated=False,
can_reuse=None, allow_joins=True, split_subq=True,
check_filterable=True):
"""
Build a WhereNode for a single filter clause but don't add it
to this Query. Query.add_q() will then add this filter to the where
Node.
The 'branch_negated' tells us if the current branch contains any
negations. This will be used to determine if subqueries are needed.
The 'current_negated' is used to determine if the current filter is
negated or not and this will be used to determine if IS NULL filtering
is needed.
The difference between current_negated and branch_negated is that
branch_negated is set on first negation, but current_negated is
flipped for each negation.
Note that add_filter will not do any negating itself, that is done
upper in the code by add_q().
The 'can_reuse' is a set of reusable joins for multijoins.
The method will create a filter clause that can be added to the current
query. However, if the filter isn't added to the query then the caller
is responsible for unreffing the joins used.
"""
if isinstance(filter_expr, dict):
raise FieldError("Cannot parse keyword query as dict")
if isinstance(filter_expr, Q):
return self._add_q(
filter_expr,
branch_negated=branch_negated,
current_negated=current_negated,
used_aliases=can_reuse,
allow_joins=allow_joins,
split_subq=split_subq,
check_filterable=check_filterable,
)
if hasattr(filter_expr, 'resolve_expression'):
if not getattr(filter_expr, 'conditional', False):
raise TypeError('Cannot filter against a non-conditional expression.')
condition = filter_expr.resolve_expression(self, allow_joins=allow_joins)
if not isinstance(condition, Lookup):
condition = self.build_lookup(['exact'], condition, True)
return WhereNode([condition], connector=AND), []
arg, value = filter_expr
if not arg:
raise FieldError("Cannot parse keyword query %r" % arg)
lookups, parts, reffed_expression = self.solve_lookup_type(arg)
if check_filterable:
self.check_filterable(reffed_expression)
if not allow_joins and len(parts) > 1:
raise FieldError("Joined field references are not permitted in this query")
pre_joins = self.alias_refcount.copy()
value = self.resolve_lookup_value(value, can_reuse, allow_joins)
used_joins = {k for k, v in self.alias_refcount.items() if v > pre_joins.get(k, 0)}
if check_filterable:
self.check_filterable(value)
if reffed_expression:
condition = self.build_lookup(lookups, reffed_expression, value)
return WhereNode([condition], connector=AND), []
opts = self.get_meta()
alias = self.get_initial_alias()
allow_many = not branch_negated or not split_subq
try:
join_info = self.setup_joins(
parts, opts, alias, can_reuse=can_reuse, allow_many=allow_many,
)
# Prevent iterator from being consumed by check_related_objects()
if isinstance(value, Iterator):
value = list(value)
self.check_related_objects(join_info.final_field, value, join_info.opts)
# split_exclude() needs to know which joins were generated for the
# lookup parts
self._lookup_joins = join_info.joins
except MultiJoin as e:
return self.split_exclude(filter_expr, can_reuse, e.names_with_path)
# Update used_joins before trimming since they are reused to determine
# which joins could be later promoted to INNER.
used_joins.update(join_info.joins)
targets, alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if can_reuse is not None:
can_reuse.update(join_list)
if join_info.final_field.is_relation:
# No support for transforms for relational fields
num_lookups = len(lookups)
if num_lookups > 1:
raise FieldError('Related Field got invalid lookup: {}'.format(lookups[0]))
if len(targets) == 1:
col = self._get_col(targets[0], join_info.final_field, alias)
else:
col = MultiColSource(alias, targets, join_info.targets, join_info.final_field)
else:
col = self._get_col(targets[0], join_info.final_field, alias)
condition = self.build_lookup(lookups, col, value)
lookup_type = condition.lookup_name
clause = WhereNode([condition], connector=AND)
require_outer = lookup_type == 'isnull' and condition.rhs is True and not current_negated
if current_negated and (lookup_type != 'isnull' or condition.rhs is False) and condition.rhs is not None:
require_outer = True
if lookup_type != 'isnull':
# The condition added here will be SQL like this:
# NOT (col IS NOT NULL), where the first NOT is added in
# upper layers of code. The reason for addition is that if col
# is null, then col != someval will result in SQL "unknown"
# which isn't the same as in Python. The Python None handling
# is wanted, and it can be gotten by
# (col IS NULL OR col != someval)
# <=>
# NOT (col IS NOT NULL AND col = someval).
if (
self.is_nullable(targets[0]) or
self.alias_map[join_list[-1]].join_type == LOUTER
):
lookup_class = targets[0].get_lookup('isnull')
col = self._get_col(targets[0], join_info.targets[0], alias)
clause.add(lookup_class(col, False), AND)
# If someval is a nullable column, someval IS NOT NULL is
# added.
if isinstance(value, Col) and self.is_nullable(value.target):
lookup_class = value.target.get_lookup('isnull')
clause.add(lookup_class(value, False), AND)
return clause, used_joins if not require_outer else ()
def add_filter(self, filter_lhs, filter_rhs):
self.add_q(Q((filter_lhs, filter_rhs)))
def add_q(self, q_object):
"""
A preprocessor for the internal _add_q(). Responsible for doing final
join promotion.
"""
# For join promotion this case is doing an AND for the added q_object
# and existing conditions. So, any existing inner join forces the join
# type to remain inner. Existing outer joins can however be demoted.
# (Consider case where rel_a is LOUTER and rel_a__col=1 is added - if
# rel_a doesn't produce any rows, then the whole condition must fail.
# So, demotion is OK.
existing_inner = {a for a in self.alias_map if self.alias_map[a].join_type == INNER}
clause, _ = self._add_q(q_object, self.used_aliases)
if clause:
self.where.add(clause, AND)
self.demote_joins(existing_inner)
def build_where(self, filter_expr):
return self.build_filter(filter_expr, allow_joins=False)[0]
def clear_where(self):
self.where = WhereNode()
def _add_q(self, q_object, used_aliases, branch_negated=False,
current_negated=False, allow_joins=True, split_subq=True,
check_filterable=True):
"""Add a Q-object to the current filter."""
connector = q_object.connector
current_negated = current_negated ^ q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
joinpromoter = JoinPromoter(q_object.connector, len(q_object.children), current_negated)
for child in q_object.children:
child_clause, needed_inner = self.build_filter(
child, can_reuse=used_aliases, branch_negated=branch_negated,
current_negated=current_negated, allow_joins=allow_joins,
split_subq=split_subq, check_filterable=check_filterable,
)
joinpromoter.add_votes(needed_inner)
if child_clause:
target_clause.add(child_clause, connector)
needed_inner = joinpromoter.update_join_types(self)
return target_clause, needed_inner
def build_filtered_relation_q(self, q_object, reuse, branch_negated=False, current_negated=False):
"""Add a FilteredRelation object to the current filter."""
connector = q_object.connector
current_negated ^= q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
for child in q_object.children:
if isinstance(child, Node):
child_clause = self.build_filtered_relation_q(
child, reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
)
else:
child_clause, _ = self.build_filter(
child, can_reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
allow_joins=True, split_subq=False,
)
target_clause.add(child_clause, connector)
return target_clause
def add_filtered_relation(self, filtered_relation, alias):
filtered_relation.alias = alias
lookups = dict(get_children_from_q(filtered_relation.condition))
relation_lookup_parts, relation_field_parts, _ = self.solve_lookup_type(filtered_relation.relation_name)
if relation_lookup_parts:
raise ValueError(
"FilteredRelation's relation_name cannot contain lookups "
"(got %r)." % filtered_relation.relation_name
)
for lookup in chain(lookups):
lookup_parts, lookup_field_parts, _ = self.solve_lookup_type(lookup)
shift = 2 if not lookup_parts else 1
lookup_field_path = lookup_field_parts[:-shift]
for idx, lookup_field_part in enumerate(lookup_field_path):
if len(relation_field_parts) > idx:
if relation_field_parts[idx] != lookup_field_part:
raise ValueError(
"FilteredRelation's condition doesn't support "
"relations outside the %r (got %r)."
% (filtered_relation.relation_name, lookup)
)
else:
raise ValueError(
"FilteredRelation's condition doesn't support nested "
"relations deeper than the relation_name (got %r for "
"%r)." % (lookup, filtered_relation.relation_name)
)
self._filtered_relations[filtered_relation.alias] = filtered_relation
def names_to_path(self, names, opts, allow_many=True, fail_on_missing=False):
"""
Walk the list of names and turns them into PathInfo tuples. A single
name in 'names' can generate multiple PathInfos (m2m, for example).
'names' is the path of names to travel, 'opts' is the model Options we
start the name resolving from, 'allow_many' is as for setup_joins().
If fail_on_missing is set to True, then a name that can't be resolved
will generate a FieldError.
Return a list of PathInfo tuples. In addition return the final field
(the last used join field) and target (which is a field guaranteed to
contain the same value as the final field). Finally, return those names
that weren't found (which are likely transforms and the final lookup).
"""
path, names_with_path = [], []
for pos, name in enumerate(names):
cur_names_with_path = (name, [])
if name == 'pk':
name = opts.pk.name
field = None
filtered_relation = None
try:
field = opts.get_field(name)
except FieldDoesNotExist:
if name in self.annotation_select:
field = self.annotation_select[name].output_field
elif name in self._filtered_relations and pos == 0:
filtered_relation = self._filtered_relations[name]
if LOOKUP_SEP in filtered_relation.relation_name:
parts = filtered_relation.relation_name.split(LOOKUP_SEP)
filtered_relation_path, field, _, _ = self.names_to_path(
parts, opts, allow_many, fail_on_missing,
)
path.extend(filtered_relation_path[:-1])
else:
field = opts.get_field(filtered_relation.relation_name)
if field is not None:
# Fields that contain one-to-many relations with a generic
# model (like a GenericForeignKey) cannot generate reverse
# relations and therefore cannot be used for reverse querying.
if field.is_relation and not field.related_model:
raise FieldError(
"Field %r does not generate an automatic reverse "
"relation and therefore cannot be used for reverse "
"querying. If it is a GenericForeignKey, consider "
"adding a GenericRelation." % name
)
try:
model = field.model._meta.concrete_model
except AttributeError:
# QuerySet.annotate() may introduce fields that aren't
# attached to a model.
model = None
else:
# We didn't find the current field, so move position back
# one step.
pos -= 1
if pos == -1 or fail_on_missing:
available = sorted([
*get_field_names_from_opts(opts),
*self.annotation_select,
*self._filtered_relations,
])
raise FieldError("Cannot resolve keyword '%s' into field. "
"Choices are: %s" % (name, ", ".join(available)))
break
# Check if we need any joins for concrete inheritance cases (the
# field lives in parent, but we are currently in one of its
# children)
if model is not opts.model:
path_to_parent = opts.get_path_to_parent(model)
if path_to_parent:
path.extend(path_to_parent)
cur_names_with_path[1].extend(path_to_parent)
opts = path_to_parent[-1].to_opts
if hasattr(field, 'get_path_info'):
pathinfos = field.get_path_info(filtered_relation)
if not allow_many:
for inner_pos, p in enumerate(pathinfos):
if p.m2m:
cur_names_with_path[1].extend(pathinfos[0:inner_pos + 1])
names_with_path.append(cur_names_with_path)
raise MultiJoin(pos + 1, names_with_path)
last = pathinfos[-1]
path.extend(pathinfos)
final_field = last.join_field
opts = last.to_opts
targets = last.target_fields
cur_names_with_path[1].extend(pathinfos)
names_with_path.append(cur_names_with_path)
else:
# Local non-relational field.
final_field = field
targets = (field,)
if fail_on_missing and pos + 1 != len(names):
raise FieldError(
"Cannot resolve keyword %r into field. Join on '%s'"
" not permitted." % (names[pos + 1], name))
break
return path, final_field, targets, names[pos + 1:]
def setup_joins(self, names, opts, alias, can_reuse=None, allow_many=True):
"""
Compute the necessary table joins for the passage through the fields
given in 'names'. 'opts' is the Options class for the current model
(which gives the table we are starting from), 'alias' is the alias for
the table to start the joining from.
The 'can_reuse' defines the reverse foreign key joins we can reuse. It
can be None in which case all joins are reusable or a set of aliases
that can be reused. Note that non-reverse foreign keys are always
reusable when using setup_joins().
If 'allow_many' is False, then any reverse foreign key seen will
generate a MultiJoin exception.
Return the final field involved in the joins, the target field (used
for any 'where' constraint), the final 'opts' value, the joins, the
field path traveled to generate the joins, and a transform function
that takes a field and alias and is equivalent to `field.get_col(alias)`
in the simple case but wraps field transforms if they were included in
names.
The target field is the field containing the concrete value. Final
field can be something different, for example foreign key pointing to
that value. Final field is needed for example in some value
conversions (convert 'obj' in fk__id=obj to pk val using the foreign
key field for example).
"""
joins = [alias]
# The transform can't be applied yet, as joins must be trimmed later.
# To avoid making every caller of this method look up transforms
# directly, compute transforms here and create a partial that converts
# fields to the appropriate wrapped version.
def final_transformer(field, alias):
if not self.alias_cols:
alias = None
return field.get_col(alias)
# Try resolving all the names as fields first. If there's an error,
# treat trailing names as lookups until a field can be resolved.
last_field_exception = None
for pivot in range(len(names), 0, -1):
try:
path, final_field, targets, rest = self.names_to_path(
names[:pivot], opts, allow_many, fail_on_missing=True,
)
except FieldError as exc:
if pivot == 1:
# The first item cannot be a lookup, so it's safe
# to raise the field error here.
raise
else:
last_field_exception = exc
else:
# The transforms are the remaining items that couldn't be
# resolved into fields.
transforms = names[pivot:]
break
for name in transforms:
def transform(field, alias, *, name, previous):
try:
wrapped = previous(field, alias)
return self.try_transform(wrapped, name)
except FieldError:
# FieldError is raised if the transform doesn't exist.
if isinstance(final_field, Field) and last_field_exception:
raise last_field_exception
else:
raise
final_transformer = functools.partial(transform, name=name, previous=final_transformer)
# Then, add the path to the query's joins. Note that we can't trim
# joins at this stage - we will need the information about join type
# of the trimmed joins.
for join in path:
if join.filtered_relation:
filtered_relation = join.filtered_relation.clone()
table_alias = filtered_relation.alias
else:
filtered_relation = None
table_alias = None
opts = join.to_opts
if join.direct:
nullable = self.is_nullable(join.join_field)
else:
nullable = True
connection = Join(
opts.db_table, alias, table_alias, INNER, join.join_field,
nullable, filtered_relation=filtered_relation,
)
reuse = can_reuse if join.m2m else None
alias = self.join(connection, reuse=reuse)
joins.append(alias)
if filtered_relation:
filtered_relation.path = joins[:]
return JoinInfo(final_field, targets, opts, joins, path, final_transformer)
def trim_joins(self, targets, joins, path):
"""
The 'target' parameter is the final field being joined to, 'joins'
is the full list of join aliases. The 'path' contain the PathInfos
used to create the joins.
Return the final target field and table alias and the new active
joins.
Always trim any direct join if the target column is already in the
previous table. Can't trim reverse joins as it's unknown if there's
anything on the other side of the join.
"""
joins = joins[:]
for pos, info in enumerate(reversed(path)):
if len(joins) == 1 or not info.direct:
break
if info.filtered_relation:
break
join_targets = {t.column for t in info.join_field.foreign_related_fields}
cur_targets = {t.column for t in targets}
if not cur_targets.issubset(join_targets):
break
targets_dict = {r[1].column: r[0] for r in info.join_field.related_fields if r[1].column in cur_targets}
targets = tuple(targets_dict[t.column] for t in targets)
self.unref_alias(joins.pop())
return targets, joins[-1], joins
@classmethod
def _gen_cols(cls, exprs, include_external=False):
for expr in exprs:
if isinstance(expr, Col):
yield expr
elif include_external and callable(getattr(expr, 'get_external_cols', None)):
yield from expr.get_external_cols()
elif hasattr(expr, 'get_source_expressions'):
yield from cls._gen_cols(
expr.get_source_expressions(),
include_external=include_external,
)
@classmethod
def _gen_col_aliases(cls, exprs):
yield from (expr.alias for expr in cls._gen_cols(exprs))
def resolve_ref(self, name, allow_joins=True, reuse=None, summarize=False):
annotation = self.annotations.get(name)
if annotation is not None:
if not allow_joins:
for alias in self._gen_col_aliases([annotation]):
if isinstance(self.alias_map[alias], Join):
raise FieldError(
'Joined field references are not permitted in '
'this query'
)
if summarize:
# Summarize currently means we are doing an aggregate() query
# which is executed as a wrapped subquery if any of the
# aggregate() elements reference an existing annotation. In
# that case we need to return a Ref to the subquery's annotation.
if name not in self.annotation_select:
raise FieldError(
"Cannot aggregate over the '%s' alias. Use annotate() "
"to promote it." % name
)
return Ref(name, self.annotation_select[name])
else:
return annotation
else:
field_list = name.split(LOOKUP_SEP)
annotation = self.annotations.get(field_list[0])
if annotation is not None:
for transform in field_list[1:]:
annotation = self.try_transform(annotation, transform)
return annotation
join_info = self.setup_joins(field_list, self.get_meta(), self.get_initial_alias(), can_reuse=reuse)
targets, final_alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if not allow_joins and len(join_list) > 1:
raise FieldError('Joined field references are not permitted in this query')
if len(targets) > 1:
raise FieldError("Referencing multicolumn fields with F() objects "
"isn't supported")
# Verify that the last lookup in name is a field or a transform:
# transform_function() raises FieldError if not.
transform = join_info.transform_function(targets[0], final_alias)
if reuse is not None:
reuse.update(join_list)
return transform
def split_exclude(self, filter_expr, can_reuse, names_with_path):
"""
When doing an exclude against any kind of N-to-many relation, we need
to use a subquery. This method constructs the nested query, given the
original exclude filter (filter_expr) and the portion up to the first
N-to-many relation field.
For example, if the origin filter is ~Q(child__name='foo'), filter_expr
is ('child__name', 'foo') and can_reuse is a set of joins usable for
filters in the original query.
We will turn this into equivalent of:
WHERE NOT EXISTS(
SELECT 1
FROM child
WHERE name = 'foo' AND child.parent_id = parent.id
LIMIT 1
)
"""
# Generate the inner query.
query = Query(self.model)
query._filtered_relations = self._filtered_relations
filter_lhs, filter_rhs = filter_expr
if isinstance(filter_rhs, OuterRef):
filter_rhs = OuterRef(filter_rhs)
elif isinstance(filter_rhs, F):
filter_rhs = OuterRef(filter_rhs.name)
query.add_filter(filter_lhs, filter_rhs)
query.clear_ordering(force=True)
# Try to have as simple as possible subquery -> trim leading joins from
# the subquery.
trimmed_prefix, contains_louter = query.trim_start(names_with_path)
col = query.select[0]
select_field = col.target
alias = col.alias
if alias in can_reuse:
pk = select_field.model._meta.pk
# Need to add a restriction so that outer query's filters are in effect for
# the subquery, too.
query.bump_prefix(self)
lookup_class = select_field.get_lookup('exact')
# Note that the query.select[0].alias is different from alias
# due to bump_prefix above.
lookup = lookup_class(pk.get_col(query.select[0].alias),
pk.get_col(alias))
query.where.add(lookup, AND)
query.external_aliases[alias] = True
lookup_class = select_field.get_lookup('exact')
lookup = lookup_class(col, ResolvedOuterRef(trimmed_prefix))
query.where.add(lookup, AND)
condition, needed_inner = self.build_filter(Exists(query))
if contains_louter:
or_null_condition, _ = self.build_filter(
('%s__isnull' % trimmed_prefix, True),
current_negated=True, branch_negated=True, can_reuse=can_reuse)
condition.add(or_null_condition, OR)
# Note that the end result will be:
# (outercol NOT IN innerq AND outercol IS NOT NULL) OR outercol IS NULL.
# This might look crazy but due to how IN works, this seems to be
# correct. If the IS NOT NULL check is removed then outercol NOT
# IN will return UNKNOWN. If the IS NULL check is removed, then if
# outercol IS NULL we will not match the row.
return condition, needed_inner
def set_empty(self):
self.where.add(NothingNode(), AND)
for query in self.combined_queries:
query.set_empty()
def is_empty(self):
return any(isinstance(c, NothingNode) for c in self.where.children)
def set_limits(self, low=None, high=None):
"""
Adjust the limits on the rows retrieved. Use low/high to set these,
as it makes it more Pythonic to read and write. When the SQL query is
created, convert them to the appropriate offset and limit values.
Apply any limits passed in here to the existing constraints. Add low
to the current low value and clamp both to any existing high value.
"""
if high is not None:
if self.high_mark is not None:
self.high_mark = min(self.high_mark, self.low_mark + high)
else:
self.high_mark = self.low_mark + high
if low is not None:
if self.high_mark is not None:
self.low_mark = min(self.high_mark, self.low_mark + low)
else:
self.low_mark = self.low_mark + low
if self.low_mark == self.high_mark:
self.set_empty()
def clear_limits(self):
"""Clear any existing limits."""
self.low_mark, self.high_mark = 0, None
@property
def is_sliced(self):
return self.low_mark != 0 or self.high_mark is not None
def has_limit_one(self):
return self.high_mark is not None and (self.high_mark - self.low_mark) == 1
def can_filter(self):
"""
Return True if adding filters to this instance is still possible.
Typically, this means no limits or offsets have been put on the results.
"""
return not self.is_sliced
def clear_select_clause(self):
"""Remove all fields from SELECT clause."""
self.select = ()
self.default_cols = False
self.select_related = False
self.set_extra_mask(())
self.set_annotation_mask(())
def clear_select_fields(self):
"""
Clear the list of fields to select (but not extra_select columns).
Some queryset types completely replace any existing list of select
columns.
"""
self.select = ()
self.values_select = ()
def add_select_col(self, col, name):
self.select += col,
self.values_select += name,
def set_select(self, cols):
self.default_cols = False
self.select = tuple(cols)
def add_distinct_fields(self, *field_names):
"""
Add and resolve the given fields to the query's "distinct on" clause.
"""
self.distinct_fields = field_names
self.distinct = True
def add_fields(self, field_names, allow_m2m=True):
"""
Add the given (model) fields to the select set. Add the field names in
the order specified.
"""
alias = self.get_initial_alias()
opts = self.get_meta()
try:
cols = []
for name in field_names:
# Join promotion note - we must not remove any rows here, so
# if there is no existing joins, use outer join.
join_info = self.setup_joins(name.split(LOOKUP_SEP), opts, alias, allow_many=allow_m2m)
targets, final_alias, joins = self.trim_joins(
join_info.targets,
join_info.joins,
join_info.path,
)
for target in targets:
cols.append(join_info.transform_function(target, final_alias))
if cols:
self.set_select(cols)
except MultiJoin:
raise FieldError("Invalid field name: '%s'" % name)
except FieldError:
if LOOKUP_SEP in name:
# For lookups spanning over relationships, show the error
# from the model on which the lookup failed.
raise
elif name in self.annotations:
raise FieldError(
"Cannot select the '%s' alias. Use annotate() to promote "
"it." % name
)
else:
names = sorted([
*get_field_names_from_opts(opts), *self.extra,
*self.annotation_select, *self._filtered_relations
])
raise FieldError("Cannot resolve keyword %r into field. "
"Choices are: %s" % (name, ", ".join(names)))
def add_ordering(self, *ordering):
"""
Add items from the 'ordering' sequence to the query's "order by"
clause. These items are either field names (not column names) --
possibly with a direction prefix ('-' or '?') -- or OrderBy
expressions.
If 'ordering' is empty, clear all ordering from the query.
"""
errors = []
for item in ordering:
if isinstance(item, str):
if item == '?':
continue
if item.startswith('-'):
item = item[1:]
if item in self.annotations:
continue
if self.extra and item in self.extra:
continue
# names_to_path() validates the lookup. A descriptive
# FieldError will be raise if it's not.
self.names_to_path(item.split(LOOKUP_SEP), self.model._meta)
elif not hasattr(item, 'resolve_expression'):
errors.append(item)
if getattr(item, 'contains_aggregate', False):
raise FieldError(
'Using an aggregate in order_by() without also including '
'it in annotate() is not allowed: %s' % item
)
if errors:
raise FieldError('Invalid order_by arguments: %s' % errors)
if ordering:
self.order_by += ordering
else:
self.default_ordering = False
def clear_ordering(self, force=False, clear_default=True):
"""
Remove any ordering settings if the current query allows it without
side effects, set 'force' to True to clear the ordering regardless.
If 'clear_default' is True, there will be no ordering in the resulting
query (not even the model's default).
"""
if not force and (self.is_sliced or self.distinct_fields or self.select_for_update):
return
self.order_by = ()
self.extra_order_by = ()
if clear_default:
self.default_ordering = False
def set_group_by(self, allow_aliases=True):
"""
Expand the GROUP BY clause required by the query.
This will usually be the set of all non-aggregate fields in the
return data. If the database backend supports grouping by the
primary key, and the query would be equivalent, the optimization
will be made automatically.
"""
# Column names from JOINs to check collisions with aliases.
if allow_aliases:
column_names = set()
seen_models = set()
for join in list(self.alias_map.values())[1:]: # Skip base table.
model = join.join_field.related_model
if model not in seen_models:
column_names.update({
field.column
for field in model._meta.local_concrete_fields
})
seen_models.add(model)
group_by = list(self.select)
if self.annotation_select:
for alias, annotation in self.annotation_select.items():
if not allow_aliases or alias in column_names:
alias = None
group_by_cols = annotation.get_group_by_cols(alias=alias)
group_by.extend(group_by_cols)
self.group_by = tuple(group_by)
def add_select_related(self, fields):
"""
Set up the select_related data structure so that we only select
certain related models (as opposed to all models, when
self.select_related=True).
"""
if isinstance(self.select_related, bool):
field_dict = {}
else:
field_dict = self.select_related
for field in fields:
d = field_dict
for part in field.split(LOOKUP_SEP):
d = d.setdefault(part, {})
self.select_related = field_dict
def add_extra(self, select, select_params, where, params, tables, order_by):
"""
Add data to the various extra_* attributes for user-created additions
to the query.
"""
if select:
# We need to pair any placeholder markers in the 'select'
# dictionary with their parameters in 'select_params' so that
# subsequent updates to the select dictionary also adjust the
# parameters appropriately.
select_pairs = {}
if select_params:
param_iter = iter(select_params)
else:
param_iter = iter([])
for name, entry in select.items():
entry = str(entry)
entry_params = []
pos = entry.find("%s")
while pos != -1:
if pos == 0 or entry[pos - 1] != '%':
entry_params.append(next(param_iter))
pos = entry.find("%s", pos + 2)
select_pairs[name] = (entry, entry_params)
self.extra.update(select_pairs)
if where or params:
self.where.add(ExtraWhere(where, params), AND)
if tables:
self.extra_tables += tuple(tables)
if order_by:
self.extra_order_by = order_by
def clear_deferred_loading(self):
"""Remove any fields from the deferred loading set."""
self.deferred_loading = (frozenset(), True)
def add_deferred_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
exclude from loading from the database when automatic column selection
is done. Add the new field names to any existing field names that
are deferred (or removed from any existing field names that are marked
as the only ones for immediate loading).
"""
# Fields on related models are stored in the literal double-underscore
# format, so that we can use a set datastructure. We do the foo__bar
# splitting and handling when computing the SQL column names (as part of
# get_columns()).
existing, defer = self.deferred_loading
if defer:
# Add to existing deferred names.
self.deferred_loading = existing.union(field_names), True
else:
# Remove names from the set of any existing "immediate load" names.
if new_existing := existing.difference(field_names):
self.deferred_loading = new_existing, False
else:
self.clear_deferred_loading()
if new_only := set(field_names).difference(existing):
self.deferred_loading = new_only, True
def add_immediate_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
retrieve when the SQL is executed ("immediate loading" fields). The
field names replace any existing immediate loading field names. If
there are field names already specified for deferred loading, remove
those names from the new field_names before storing the new names
for immediate loading. (That is, immediate loading overrides any
existing immediate values, but respects existing deferrals.)
"""
existing, defer = self.deferred_loading
field_names = set(field_names)
if 'pk' in field_names:
field_names.remove('pk')
field_names.add(self.get_meta().pk.name)
if defer:
# Remove any existing deferred names from the current set before
# setting the new names.
self.deferred_loading = field_names.difference(existing), False
else:
# Replace any existing "immediate load" field names.
self.deferred_loading = frozenset(field_names), False
def get_loaded_field_names(self):
"""
If any fields are marked to be deferred, return a dictionary mapping
models to a set of names in those fields that will be loaded. If a
model is not in the returned dictionary, none of its fields are
deferred.
If no fields are marked for deferral, return an empty dictionary.
"""
# We cache this because we call this function multiple times
# (compiler.fill_related_selections, query.iterator)
try:
return self._loaded_field_names_cache
except AttributeError:
collection = {}
self.deferred_to_data(collection, self.get_loaded_field_names_cb)
self._loaded_field_names_cache = collection
return collection
def get_loaded_field_names_cb(self, target, model, fields):
"""Callback used by get_deferred_field_names()."""
target[model] = {f.attname for f in fields}
def set_annotation_mask(self, names):
"""Set the mask of annotations that will be returned by the SELECT."""
if names is None:
self.annotation_select_mask = None
else:
self.annotation_select_mask = set(names)
self._annotation_select_cache = None
def append_annotation_mask(self, names):
if self.annotation_select_mask is not None:
self.set_annotation_mask(self.annotation_select_mask.union(names))
def set_extra_mask(self, names):
"""
Set the mask of extra select items that will be returned by SELECT.
Don't remove them from the Query since they might be used later.
"""
if names is None:
self.extra_select_mask = None
else:
self.extra_select_mask = set(names)
self._extra_select_cache = None
def set_values(self, fields):
self.select_related = False
self.clear_deferred_loading()
self.clear_select_fields()
if fields:
field_names = []
extra_names = []
annotation_names = []
if not self.extra and not self.annotations:
# Shortcut - if there are no extra or annotations, then
# the values() clause must be just field names.
field_names = list(fields)
else:
self.default_cols = False
for f in fields:
if f in self.extra_select:
extra_names.append(f)
elif f in self.annotation_select:
annotation_names.append(f)
else:
field_names.append(f)
self.set_extra_mask(extra_names)
self.set_annotation_mask(annotation_names)
selected = frozenset(field_names + extra_names + annotation_names)
else:
field_names = [f.attname for f in self.model._meta.concrete_fields]
selected = frozenset(field_names)
# Selected annotations must be known before setting the GROUP BY
# clause.
if self.group_by is True:
self.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
self.set_group_by(allow_aliases=False)
self.clear_select_fields()
elif self.group_by:
# Resolve GROUP BY annotation references if they are not part of
# the selected fields anymore.
group_by = []
for expr in self.group_by:
if isinstance(expr, Ref) and expr.refs not in selected:
expr = self.annotations[expr.refs]
group_by.append(expr)
self.group_by = tuple(group_by)
self.values_select = tuple(field_names)
self.add_fields(field_names, True)
@property
def annotation_select(self):
"""
Return the dictionary of aggregate columns that are not masked and
should be used in the SELECT clause. Cache this result for performance.
"""
if self._annotation_select_cache is not None:
return self._annotation_select_cache
elif not self.annotations:
return {}
elif self.annotation_select_mask is not None:
self._annotation_select_cache = {
k: v for k, v in self.annotations.items()
if k in self.annotation_select_mask
}
return self._annotation_select_cache
else:
return self.annotations
@property
def extra_select(self):
if self._extra_select_cache is not None:
return self._extra_select_cache
if not self.extra:
return {}
elif self.extra_select_mask is not None:
self._extra_select_cache = {
k: v for k, v in self.extra.items()
if k in self.extra_select_mask
}
return self._extra_select_cache
else:
return self.extra
def trim_start(self, names_with_path):
"""
Trim joins from the start of the join path. The candidates for trim
are the PathInfos in names_with_path structure that are m2m joins.
Also set the select column so the start matches the join.
This method is meant to be used for generating the subquery joins &
cols in split_exclude().
Return a lookup usable for doing outerq.filter(lookup=self) and a
boolean indicating if the joins in the prefix contain a LEFT OUTER join.
_"""
all_paths = []
for _, paths in names_with_path:
all_paths.extend(paths)
contains_louter = False
# Trim and operate only on tables that were generated for
# the lookup part of the query. That is, avoid trimming
# joins generated for F() expressions.
lookup_tables = [
t for t in self.alias_map
if t in self._lookup_joins or t == self.base_table
]
for trimmed_paths, path in enumerate(all_paths):
if path.m2m:
break
if self.alias_map[lookup_tables[trimmed_paths + 1]].join_type == LOUTER:
contains_louter = True
alias = lookup_tables[trimmed_paths]
self.unref_alias(alias)
# The path.join_field is a Rel, lets get the other side's field
join_field = path.join_field.field
# Build the filter prefix.
paths_in_prefix = trimmed_paths
trimmed_prefix = []
for name, path in names_with_path:
if paths_in_prefix - len(path) < 0:
break
trimmed_prefix.append(name)
paths_in_prefix -= len(path)
trimmed_prefix.append(
join_field.foreign_related_fields[0].name)
trimmed_prefix = LOOKUP_SEP.join(trimmed_prefix)
# Lets still see if we can trim the first join from the inner query
# (that is, self). We can't do this for:
# - LEFT JOINs because we would miss those rows that have nothing on
# the outer side,
# - INNER JOINs from filtered relations because we would miss their
# filters.
first_join = self.alias_map[lookup_tables[trimmed_paths + 1]]
if first_join.join_type != LOUTER and not first_join.filtered_relation:
select_fields = [r[0] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths + 1]
self.unref_alias(lookup_tables[trimmed_paths])
extra_restriction = join_field.get_extra_restriction(None, lookup_tables[trimmed_paths + 1])
if extra_restriction:
self.where.add(extra_restriction, AND)
else:
# TODO: It might be possible to trim more joins from the start of the
# inner query if it happens to have a longer join chain containing the
# values in select_fields. Lets punt this one for now.
select_fields = [r[1] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths]
# The found starting point is likely a Join instead of a BaseTable reference.
# But the first entry in the query's FROM clause must not be a JOIN.
for table in self.alias_map:
if self.alias_refcount[table] > 0:
self.alias_map[table] = BaseTable(self.alias_map[table].table_name, table)
break
self.set_select([f.get_col(select_alias) for f in select_fields])
return trimmed_prefix, contains_louter
def is_nullable(self, field):
"""
Check if the given field should be treated as nullable.
Some backends treat '' as null and Django treats such fields as
nullable for those backends. In such situations field.null can be
False even if we should treat the field as nullable.
"""
# We need to use DEFAULT_DB_ALIAS here, as QuerySet does not have
# (nor should it have) knowledge of which connection is going to be
# used. The proper fix would be to defer all decisions where
# is_nullable() is needed to the compiler stage, but that is not easy
# to do currently.
return field.null or (
field.empty_strings_allowed and
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls
)
def get_order_dir(field, default='ASC'):
"""
Return the field name and direction for an order specification. For
example, '-foo' is returned as ('foo', 'DESC').
The 'default' param is used to indicate which way no prefix (or a '+'
prefix) should sort. The '-' prefix always sorts the opposite way.
"""
dirn = ORDER_DIR[default]
if field[0] == '-':
return field[1:], dirn[1]
return field, dirn[0]
def add_to_dict(data, key, value):
"""
Add "value" to the set of values for "key", whether or not "key" already
exists.
"""
if key in data:
data[key].add(value)
else:
data[key] = {value}
def is_reverse_o2o(field):
"""
Check if the given field is reverse-o2o. The field is expected to be some
sort of relation field or related object.
"""
return field.is_relation and field.one_to_one and not field.concrete
class JoinPromoter:
"""
A class to abstract away join promotion problems for complex filter
conditions.
"""
def __init__(self, connector, num_children, negated):
self.connector = connector
self.negated = negated
if self.negated:
if connector == AND:
self.effective_connector = OR
else:
self.effective_connector = AND
else:
self.effective_connector = self.connector
self.num_children = num_children
# Maps of table alias to how many times it is seen as required for
# inner and/or outer joins.
self.votes = Counter()
def add_votes(self, votes):
"""
Add single vote per item to self.votes. Parameter can be any
iterable.
"""
self.votes.update(votes)
def update_join_types(self, query):
"""
Change join types so that the generated query is as efficient as
possible, but still correct. So, change as many joins as possible
to INNER, but don't make OUTER joins INNER if that could remove
results from the query.
"""
to_promote = set()
to_demote = set()
# The effective_connector is used so that NOT (a AND b) is treated
# similarly to (a OR b) for join promotion.
for table, votes in self.votes.items():
# We must use outer joins in OR case when the join isn't contained
# in all of the joins. Otherwise the INNER JOIN itself could remove
# valid results. Consider the case where a model with rel_a and
# rel_b relations is queried with rel_a__col=1 | rel_b__col=2. Now,
# if rel_a join doesn't produce any results is null (for example
# reverse foreign key or null value in direct foreign key), and
# there is a matching row in rel_b with col=2, then an INNER join
# to rel_a would remove a valid match from the query. So, we need
# to promote any existing INNER to LOUTER (it is possible this
# promotion in turn will be demoted later on).
if self.effective_connector == 'OR' and votes < self.num_children:
to_promote.add(table)
# If connector is AND and there is a filter that can match only
# when there is a joinable row, then use INNER. For example, in
# rel_a__col=1 & rel_b__col=2, if either of the rels produce NULL
# as join output, then the col=1 or col=2 can't match (as
# NULL=anything is always false).
# For the OR case, if all children voted for a join to be inner,
# then we can use INNER for the join. For example:
# (rel_a__col__icontains=Alex | rel_a__col__icontains=Russell)
# then if rel_a doesn't produce any rows, the whole condition
# can't match. Hence we can safely use INNER join.
if self.effective_connector == 'AND' or (
self.effective_connector == 'OR' and votes == self.num_children):
to_demote.add(table)
# Finally, what happens in cases where we have:
# (rel_a__col=1|rel_b__col=2) & rel_a__col__gte=0
# Now, we first generate the OR clause, and promote joins for it
# in the first if branch above. Both rel_a and rel_b are promoted
# to LOUTER joins. After that we do the AND case. The OR case
# voted no inner joins but the rel_a__col__gte=0 votes inner join
# for rel_a. We demote it back to INNER join (in AND case a single
# vote is enough). The demotion is OK, if rel_a doesn't produce
# rows, then the rel_a__col__gte=0 clause can't be true, and thus
# the whole clause must be false. So, it is safe to use INNER
# join.
# Note that in this example we could just as well have the __gte
# clause and the OR clause swapped. Or we could replace the __gte
# clause with an OR clause containing rel_a__col=1|rel_a__col=2,
# and again we could safely demote to INNER.
query.promote_joins(to_promote)
query.demote_joins(to_demote)
return to_demote
|
4b5f55cba63fa6a149d6835a05d0b757b4e8dd744d3052517211b9569c7cb811 | import datetime
import pickle
import sys
import unittest
from operator import attrgetter
from threading import Lock
from django.core.exceptions import EmptyResultSet, FieldError
from django.db import DEFAULT_DB_ALIAS, connection
from django.db.models import Count, Exists, F, Max, OuterRef, Q
from django.db.models.expressions import RawSQL
from django.db.models.sql.constants import LOUTER
from django.db.models.sql.where import NothingNode, WhereNode
from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
from django.test.utils import CaptureQueriesContext
from .models import (
FK1, Annotation, Article, Author, BaseA, Book, CategoryItem,
CategoryRelationship, Celebrity, Channel, Chapter, Child, ChildObjectA,
Classroom, CommonMixedCaseForeignKeys, Company, Cover, CustomPk,
CustomPkTag, DateTimePK, Detail, DumbCategory, Eaten, Employment,
ExtraInfo, Fan, Food, Identifier, Individual, Item, Job,
JobResponsibilities, Join, LeafA, LeafB, LoopX, LoopZ, ManagedModel,
Member, MixedCaseDbColumnCategoryItem, MixedCaseFieldCategoryItem, ModelA,
ModelB, ModelC, ModelD, MyObject, NamedCategory, Node, Note, NullableName,
Number, ObjectA, ObjectB, ObjectC, OneToOneCategory, Order, OrderItem,
Page, Paragraph, Person, Plaything, PointerA, Program, ProxyCategory,
ProxyObjectA, ProxyObjectB, Ranking, Related, RelatedIndividual,
RelatedObject, Report, ReportComment, ReservedName, Responsibility, School,
SharedConnection, SimpleCategory, SingleObject, SpecialCategory, Staff,
StaffUser, Student, Tag, Task, Teacher, Ticket21203Child,
Ticket21203Parent, Ticket23605A, Ticket23605B, Ticket23605C, TvChef, Valid,
X,
)
class Queries1Tests(TestCase):
@classmethod
def setUpTestData(cls):
cls.nc1 = generic = NamedCategory.objects.create(name="Generic")
cls.t1 = Tag.objects.create(name='t1', category=generic)
cls.t2 = Tag.objects.create(name='t2', parent=cls.t1, category=generic)
cls.t3 = Tag.objects.create(name='t3', parent=cls.t1)
cls.t4 = Tag.objects.create(name='t4', parent=cls.t3)
cls.t5 = Tag.objects.create(name='t5', parent=cls.t3)
cls.n1 = Note.objects.create(note='n1', misc='foo', id=1)
cls.n2 = Note.objects.create(note='n2', misc='bar', id=2)
cls.n3 = Note.objects.create(note='n3', misc='foo', id=3, negate=False)
cls.ann1 = Annotation.objects.create(name='a1', tag=cls.t1)
cls.ann1.notes.add(cls.n1)
ann2 = Annotation.objects.create(name='a2', tag=cls.t4)
ann2.notes.add(cls.n2, cls.n3)
# Create these out of order so that sorting by 'id' will be different to sorting
# by 'info'. Helps detect some problems later.
cls.e2 = ExtraInfo.objects.create(info='e2', note=cls.n2, value=41, filterable=False)
e1 = ExtraInfo.objects.create(info='e1', note=cls.n1, value=42)
cls.a1 = Author.objects.create(name='a1', num=1001, extra=e1)
cls.a2 = Author.objects.create(name='a2', num=2002, extra=e1)
cls.a3 = Author.objects.create(name='a3', num=3003, extra=cls.e2)
cls.a4 = Author.objects.create(name='a4', num=4004, extra=cls.e2)
cls.time1 = datetime.datetime(2007, 12, 19, 22, 25, 0)
cls.time2 = datetime.datetime(2007, 12, 19, 21, 0, 0)
time3 = datetime.datetime(2007, 12, 20, 22, 25, 0)
time4 = datetime.datetime(2007, 12, 20, 21, 0, 0)
cls.i1 = Item.objects.create(name='one', created=cls.time1, modified=cls.time1, creator=cls.a1, note=cls.n3)
cls.i1.tags.set([cls.t1, cls.t2])
cls.i2 = Item.objects.create(name='two', created=cls.time2, creator=cls.a2, note=cls.n2)
cls.i2.tags.set([cls.t1, cls.t3])
cls.i3 = Item.objects.create(name='three', created=time3, creator=cls.a2, note=cls.n3)
cls.i4 = Item.objects.create(name='four', created=time4, creator=cls.a4, note=cls.n3)
cls.i4.tags.set([cls.t4])
cls.r1 = Report.objects.create(name='r1', creator=cls.a1)
cls.r2 = Report.objects.create(name='r2', creator=cls.a3)
cls.r3 = Report.objects.create(name='r3')
# Ordering by 'rank' gives us rank2, rank1, rank3. Ordering by the Meta.ordering
# will be rank3, rank2, rank1.
cls.rank1 = Ranking.objects.create(rank=2, author=cls.a2)
cls.c1 = Cover.objects.create(title="first", item=cls.i4)
cls.c2 = Cover.objects.create(title="second", item=cls.i2)
def test_subquery_condition(self):
qs1 = Tag.objects.filter(pk__lte=0)
qs2 = Tag.objects.filter(parent__in=qs1)
qs3 = Tag.objects.filter(parent__in=qs2)
self.assertEqual(qs3.query.subq_aliases, {'T', 'U', 'V'})
self.assertIn('v0', str(qs3.query).lower())
qs4 = qs3.filter(parent__in=qs1)
self.assertEqual(qs4.query.subq_aliases, {'T', 'U', 'V'})
# It is possible to reuse U for the second subquery, no need to use W.
self.assertNotIn('w0', str(qs4.query).lower())
# So, 'U0."id"' is referenced in SELECT and WHERE twice.
self.assertEqual(str(qs4.query).lower().count('u0.'), 4)
def test_ticket1050(self):
self.assertSequenceEqual(
Item.objects.filter(tags__isnull=True),
[self.i3],
)
self.assertSequenceEqual(
Item.objects.filter(tags__id__isnull=True),
[self.i3],
)
def test_ticket1801(self):
self.assertSequenceEqual(
Author.objects.filter(item=self.i2),
[self.a2],
)
self.assertSequenceEqual(
Author.objects.filter(item=self.i3),
[self.a2],
)
self.assertSequenceEqual(
Author.objects.filter(item=self.i2) & Author.objects.filter(item=self.i3),
[self.a2],
)
def test_ticket2306(self):
# Checking that no join types are "left outer" joins.
query = Item.objects.filter(tags=self.t2).query
self.assertNotIn(LOUTER, [x.join_type for x in query.alias_map.values()])
self.assertSequenceEqual(
Item.objects.filter(Q(tags=self.t1)).order_by('name'),
[self.i1, self.i2],
)
self.assertSequenceEqual(
Item.objects.filter(Q(tags=self.t1)).filter(Q(tags=self.t2)),
[self.i1],
)
self.assertSequenceEqual(
Item.objects.filter(Q(tags=self.t1)).filter(Q(creator__name='fred') | Q(tags=self.t2)),
[self.i1],
)
# Each filter call is processed "at once" against a single table, so this is
# different from the previous example as it tries to find tags that are two
# things at once (rather than two tags).
self.assertSequenceEqual(
Item.objects.filter(Q(tags=self.t1) & Q(tags=self.t2)),
[]
)
self.assertSequenceEqual(
Item.objects.filter(Q(tags=self.t1), Q(creator__name='fred') | Q(tags=self.t2)),
[]
)
qs = Author.objects.filter(ranking__rank=2, ranking__id=self.rank1.id)
self.assertSequenceEqual(list(qs), [self.a2])
self.assertEqual(2, qs.query.count_active_tables(), 2)
qs = Author.objects.filter(ranking__rank=2).filter(ranking__id=self.rank1.id)
self.assertEqual(qs.query.count_active_tables(), 3)
def test_ticket4464(self):
self.assertSequenceEqual(
Item.objects.filter(tags=self.t1).filter(tags=self.t2),
[self.i1],
)
self.assertSequenceEqual(
Item.objects.filter(tags__in=[self.t1, self.t2]).distinct().order_by('name'),
[self.i1, self.i2],
)
self.assertSequenceEqual(
Item.objects.filter(tags__in=[self.t1, self.t2]).filter(tags=self.t3),
[self.i2],
)
# Make sure .distinct() works with slicing (this was broken in Oracle).
self.assertSequenceEqual(
Item.objects.filter(tags__in=[self.t1, self.t2]).order_by('name')[:3],
[self.i1, self.i1, self.i2],
)
self.assertSequenceEqual(
Item.objects.filter(tags__in=[self.t1, self.t2]).distinct().order_by('name')[:3],
[self.i1, self.i2],
)
def test_tickets_2080_3592(self):
self.assertSequenceEqual(
Author.objects.filter(item__name='one') | Author.objects.filter(name='a3'),
[self.a1, self.a3],
)
self.assertSequenceEqual(
Author.objects.filter(Q(item__name='one') | Q(name='a3')),
[self.a1, self.a3],
)
self.assertSequenceEqual(
Author.objects.filter(Q(name='a3') | Q(item__name='one')),
[self.a1, self.a3],
)
self.assertSequenceEqual(
Author.objects.filter(Q(item__name='three') | Q(report__name='r3')),
[self.a2],
)
def test_ticket6074(self):
# Merging two empty result sets shouldn't leave a queryset with no constraints
# (which would match everything).
self.assertSequenceEqual(Author.objects.filter(Q(id__in=[])), [])
self.assertSequenceEqual(
Author.objects.filter(Q(id__in=[]) | Q(id__in=[])),
[]
)
def test_tickets_1878_2939(self):
self.assertEqual(Item.objects.values('creator').distinct().count(), 3)
# Create something with a duplicate 'name' so that we can test multi-column
# cases (which require some tricky SQL transformations under the covers).
xx = Item(name='four', created=self.time1, creator=self.a2, note=self.n1)
xx.save()
self.assertEqual(
Item.objects.exclude(name='two').values('creator', 'name').distinct().count(),
4
)
self.assertEqual(
(
Item.objects
.exclude(name='two')
.extra(select={'foo': '%s'}, select_params=(1,))
.values('creator', 'name', 'foo')
.distinct()
.count()
),
4
)
self.assertEqual(
(
Item.objects
.exclude(name='two')
.extra(select={'foo': '%s'}, select_params=(1,))
.values('creator', 'name')
.distinct()
.count()
),
4
)
xx.delete()
def test_ticket7323(self):
self.assertEqual(Item.objects.values('creator', 'name').count(), 4)
def test_ticket2253(self):
q1 = Item.objects.order_by('name')
q2 = Item.objects.filter(id=self.i1.id)
self.assertSequenceEqual(q1, [self.i4, self.i1, self.i3, self.i2])
self.assertSequenceEqual(q2, [self.i1])
self.assertSequenceEqual(
(q1 | q2).order_by('name'),
[self.i4, self.i1, self.i3, self.i2],
)
self.assertSequenceEqual((q1 & q2).order_by('name'), [self.i1])
q1 = Item.objects.filter(tags=self.t1)
q2 = Item.objects.filter(note=self.n3, tags=self.t2)
q3 = Item.objects.filter(creator=self.a4)
self.assertSequenceEqual(
((q1 & q2) | q3).order_by('name'),
[self.i4, self.i1],
)
def test_order_by_tables(self):
q1 = Item.objects.order_by('name')
q2 = Item.objects.filter(id=self.i1.id)
list(q2)
combined_query = (q1 & q2).order_by('name').query
self.assertEqual(len([
t for t in combined_query.alias_map if combined_query.alias_refcount[t]
]), 1)
def test_order_by_join_unref(self):
"""
This test is related to the above one, testing that there aren't
old JOINs in the query.
"""
qs = Celebrity.objects.order_by('greatest_fan__fan_of')
self.assertIn('OUTER JOIN', str(qs.query))
qs = qs.order_by('id')
self.assertNotIn('OUTER JOIN', str(qs.query))
def test_get_clears_ordering(self):
"""
get() should clear ordering for optimization purposes.
"""
with CaptureQueriesContext(connection) as captured_queries:
Author.objects.order_by('name').get(pk=self.a1.pk)
self.assertNotIn('order by', captured_queries[0]['sql'].lower())
def test_tickets_4088_4306(self):
self.assertSequenceEqual(Report.objects.filter(creator=1001), [self.r1])
self.assertSequenceEqual(
Report.objects.filter(creator__num=1001),
[self.r1]
)
self.assertSequenceEqual(Report.objects.filter(creator__id=1001), [])
self.assertSequenceEqual(
Report.objects.filter(creator__id=self.a1.id),
[self.r1]
)
self.assertSequenceEqual(
Report.objects.filter(creator__name='a1'),
[self.r1]
)
def test_ticket4510(self):
self.assertSequenceEqual(
Author.objects.filter(report__name='r1'),
[self.a1],
)
def test_ticket7378(self):
self.assertSequenceEqual(self.a1.report_set.all(), [self.r1])
def test_tickets_5324_6704(self):
self.assertSequenceEqual(
Item.objects.filter(tags__name='t4'),
[self.i4],
)
self.assertSequenceEqual(
Item.objects.exclude(tags__name='t4').order_by('name').distinct(),
[self.i1, self.i3, self.i2],
)
self.assertSequenceEqual(
Item.objects.exclude(tags__name='t4').order_by('name').distinct().reverse(),
[self.i2, self.i3, self.i1],
)
self.assertSequenceEqual(
Author.objects.exclude(item__name='one').distinct().order_by('name'),
[self.a2, self.a3, self.a4],
)
# Excluding across a m2m relation when there is more than one related
# object associated was problematic.
self.assertSequenceEqual(
Item.objects.exclude(tags__name='t1').order_by('name'),
[self.i4, self.i3],
)
self.assertSequenceEqual(
Item.objects.exclude(tags__name='t1').exclude(tags__name='t4'),
[self.i3],
)
# Excluding from a relation that cannot be NULL should not use outer joins.
query = Item.objects.exclude(creator__in=[self.a1, self.a2]).query
self.assertNotIn(LOUTER, [x.join_type for x in query.alias_map.values()])
# Similarly, when one of the joins cannot possibly, ever, involve NULL
# values (Author -> ExtraInfo, in the following), it should never be
# promoted to a left outer join. So the following query should only
# involve one "left outer" join (Author -> Item is 0-to-many).
qs = Author.objects.filter(id=self.a1.id).filter(Q(extra__note=self.n1) | Q(item__note=self.n3))
self.assertEqual(
len([
x for x in qs.query.alias_map.values()
if x.join_type == LOUTER and qs.query.alias_refcount[x.table_alias]
]),
1
)
# The previous changes shouldn't affect nullable foreign key joins.
self.assertSequenceEqual(
Tag.objects.filter(parent__isnull=True).order_by('name'),
[self.t1]
)
self.assertSequenceEqual(
Tag.objects.exclude(parent__isnull=True).order_by('name'),
[self.t2, self.t3, self.t4, self.t5],
)
self.assertSequenceEqual(
Tag.objects.exclude(Q(parent__name='t1') | Q(parent__isnull=True)).order_by('name'),
[self.t4, self.t5],
)
self.assertSequenceEqual(
Tag.objects.exclude(Q(parent__isnull=True) | Q(parent__name='t1')).order_by('name'),
[self.t4, self.t5],
)
self.assertSequenceEqual(
Tag.objects.exclude(Q(parent__parent__isnull=True)).order_by('name'),
[self.t4, self.t5],
)
self.assertSequenceEqual(
Tag.objects.filter(~Q(parent__parent__isnull=True)).order_by('name'),
[self.t4, self.t5],
)
def test_ticket2091(self):
t = Tag.objects.get(name='t4')
self.assertSequenceEqual(Item.objects.filter(tags__in=[t]), [self.i4])
def test_avoid_infinite_loop_on_too_many_subqueries(self):
x = Tag.objects.filter(pk=1)
local_recursion_limit = sys.getrecursionlimit() // 16
msg = 'Maximum recursion depth exceeded: too many subqueries.'
with self.assertRaisesMessage(RecursionError, msg):
for i in range(local_recursion_limit + 2):
x = Tag.objects.filter(pk__in=x)
def test_reasonable_number_of_subq_aliases(self):
x = Tag.objects.filter(pk=1)
for _ in range(20):
x = Tag.objects.filter(pk__in=x)
self.assertEqual(
x.query.subq_aliases, {
'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD',
'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN',
}
)
def test_heterogeneous_qs_combination(self):
# Combining querysets built on different models should behave in a well-defined
# fashion. We raise an error.
msg = 'Cannot combine queries on two different base models.'
with self.assertRaisesMessage(TypeError, msg):
Author.objects.all() & Tag.objects.all()
with self.assertRaisesMessage(TypeError, msg):
Author.objects.all() | Tag.objects.all()
def test_ticket3141(self):
self.assertEqual(Author.objects.extra(select={'foo': '1'}).count(), 4)
self.assertEqual(
Author.objects.extra(select={'foo': '%s'}, select_params=(1,)).count(),
4
)
def test_ticket2400(self):
self.assertSequenceEqual(
Author.objects.filter(item__isnull=True),
[self.a3],
)
self.assertSequenceEqual(
Tag.objects.filter(item__isnull=True),
[self.t5],
)
def test_ticket2496(self):
self.assertSequenceEqual(
Item.objects.extra(tables=['queries_author']).select_related().order_by('name')[:1],
[self.i4],
)
def test_error_raised_on_filter_with_dictionary(self):
with self.assertRaisesMessage(FieldError, 'Cannot parse keyword query as dict'):
Note.objects.filter({'note': 'n1', 'misc': 'foo'})
def test_tickets_2076_7256(self):
# Ordering on related tables should be possible, even if the table is
# not otherwise involved.
self.assertSequenceEqual(
Item.objects.order_by('note__note', 'name'),
[self.i2, self.i4, self.i1, self.i3],
)
# Ordering on a related field should use the remote model's default
# ordering as a final step.
self.assertSequenceEqual(
Author.objects.order_by('extra', '-name'),
[self.a2, self.a1, self.a4, self.a3],
)
# Using remote model default ordering can span multiple models (in this
# case, Cover is ordered by Item's default, which uses Note's default).
self.assertSequenceEqual(Cover.objects.all(), [self.c1, self.c2])
# If the remote model does not have a default ordering, we order by its 'id'
# field.
self.assertSequenceEqual(
Item.objects.order_by('creator', 'name'),
[self.i1, self.i3, self.i2, self.i4],
)
# Ordering by a many-valued attribute (e.g. a many-to-many or reverse
# ForeignKey) is legal, but the results might not make sense. That
# isn't Django's problem. Garbage in, garbage out.
self.assertSequenceEqual(
Item.objects.filter(tags__isnull=False).order_by('tags', 'id'),
[self.i1, self.i2, self.i1, self.i2, self.i4],
)
# If we replace the default ordering, Django adjusts the required
# tables automatically. Item normally requires a join with Note to do
# the default ordering, but that isn't needed here.
qs = Item.objects.order_by('name')
self.assertSequenceEqual(qs, [self.i4, self.i1, self.i3, self.i2])
self.assertEqual(len(qs.query.alias_map), 1)
def test_tickets_2874_3002(self):
qs = Item.objects.select_related().order_by('note__note', 'name')
self.assertQuerysetEqual(qs, [self.i2, self.i4, self.i1, self.i3])
# This is also a good select_related() test because there are multiple
# Note entries in the SQL. The two Note items should be different.
self.assertEqual(repr(qs[0].note), '<Note: n2>')
self.assertEqual(repr(qs[0].creator.extra.note), '<Note: n1>')
def test_ticket3037(self):
self.assertSequenceEqual(
Item.objects.filter(Q(creator__name='a3', name='two') | Q(creator__name='a4', name='four')),
[self.i4],
)
def test_tickets_5321_7070(self):
# Ordering columns must be included in the output columns. Note that
# this means results that might otherwise be distinct are not (if there
# are multiple values in the ordering cols), as in this example. This
# isn't a bug; it's a warning to be careful with the selection of
# ordering columns.
self.assertSequenceEqual(
Note.objects.values('misc').distinct().order_by('note', '-misc'),
[{'misc': 'foo'}, {'misc': 'bar'}, {'misc': 'foo'}]
)
def test_ticket4358(self):
# If you don't pass any fields to values(), relation fields are
# returned as "foo_id" keys, not "foo". For consistency, you should be
# able to pass "foo_id" in the fields list and have it work, too. We
# actually allow both "foo" and "foo_id".
# The *_id version is returned by default.
self.assertIn('note_id', ExtraInfo.objects.values()[0])
# You can also pass it in explicitly.
self.assertSequenceEqual(ExtraInfo.objects.values('note_id'), [{'note_id': 1}, {'note_id': 2}])
# ...or use the field name.
self.assertSequenceEqual(ExtraInfo.objects.values('note'), [{'note': 1}, {'note': 2}])
def test_ticket6154(self):
# Multiple filter statements are joined using "AND" all the time.
self.assertSequenceEqual(
Author.objects.filter(id=self.a1.id).filter(Q(extra__note=self.n1) | Q(item__note=self.n3)),
[self.a1],
)
self.assertSequenceEqual(
Author.objects.filter(Q(extra__note=self.n1) | Q(item__note=self.n3)).filter(id=self.a1.id),
[self.a1],
)
def test_ticket6981(self):
self.assertSequenceEqual(
Tag.objects.select_related('parent').order_by('name'),
[self.t1, self.t2, self.t3, self.t4, self.t5],
)
def test_ticket9926(self):
self.assertSequenceEqual(
Tag.objects.select_related("parent", "category").order_by('name'),
[self.t1, self.t2, self.t3, self.t4, self.t5],
)
self.assertSequenceEqual(
Tag.objects.select_related('parent', "parent__category").order_by('name'),
[self.t1, self.t2, self.t3, self.t4, self.t5],
)
def test_tickets_6180_6203(self):
# Dates with limits and/or counts
self.assertEqual(Item.objects.count(), 4)
self.assertEqual(Item.objects.datetimes('created', 'month').count(), 1)
self.assertEqual(Item.objects.datetimes('created', 'day').count(), 2)
self.assertEqual(len(Item.objects.datetimes('created', 'day')), 2)
self.assertEqual(Item.objects.datetimes('created', 'day')[0], datetime.datetime(2007, 12, 19, 0, 0))
def test_tickets_7087_12242(self):
# Dates with extra select columns
self.assertSequenceEqual(
Item.objects.datetimes('created', 'day').extra(select={'a': 1}),
[datetime.datetime(2007, 12, 19, 0, 0), datetime.datetime(2007, 12, 20, 0, 0)],
)
self.assertSequenceEqual(
Item.objects.extra(select={'a': 1}).datetimes('created', 'day'),
[datetime.datetime(2007, 12, 19, 0, 0), datetime.datetime(2007, 12, 20, 0, 0)],
)
name = "one"
self.assertSequenceEqual(
Item.objects.datetimes('created', 'day').extra(where=['name=%s'], params=[name]),
[datetime.datetime(2007, 12, 19, 0, 0)],
)
self.assertSequenceEqual(
Item.objects.extra(where=['name=%s'], params=[name]).datetimes('created', 'day'),
[datetime.datetime(2007, 12, 19, 0, 0)],
)
def test_ticket7155(self):
# Nullable dates
self.assertSequenceEqual(
Item.objects.datetimes('modified', 'day'),
[datetime.datetime(2007, 12, 19, 0, 0)],
)
def test_order_by_rawsql(self):
self.assertSequenceEqual(
Item.objects.values('note__note').order_by(
RawSQL('queries_note.note', ()),
'id',
),
[
{'note__note': 'n2'},
{'note__note': 'n3'},
{'note__note': 'n3'},
{'note__note': 'n3'},
],
)
def test_ticket7096(self):
# Make sure exclude() with multiple conditions continues to work.
self.assertSequenceEqual(
Tag.objects.filter(parent=self.t1, name='t3').order_by('name'),
[self.t3],
)
self.assertSequenceEqual(
Tag.objects.exclude(parent=self.t1, name='t3').order_by('name'),
[self.t1, self.t2, self.t4, self.t5],
)
self.assertSequenceEqual(
Item.objects.exclude(tags__name='t1', name='one').order_by('name').distinct(),
[self.i4, self.i3, self.i2],
)
self.assertSequenceEqual(
Item.objects.filter(name__in=['three', 'four']).exclude(tags__name='t1').order_by('name'),
[self.i4, self.i3],
)
# More twisted cases, involving nested negations.
self.assertSequenceEqual(
Item.objects.exclude(~Q(tags__name='t1', name='one')),
[self.i1],
)
self.assertSequenceEqual(
Item.objects.filter(~Q(tags__name='t1', name='one'), name='two'),
[self.i2],
)
self.assertSequenceEqual(
Item.objects.exclude(~Q(tags__name='t1', name='one'), name='two'),
[self.i4, self.i1, self.i3],
)
def test_tickets_7204_7506(self):
# Make sure querysets with related fields can be pickled. If this
# doesn't crash, it's a Good Thing.
pickle.dumps(Item.objects.all())
def test_ticket7813(self):
# We should also be able to pickle things that use select_related().
# The only tricky thing here is to ensure that we do the related
# selections properly after unpickling.
qs = Item.objects.select_related()
query = qs.query.get_compiler(qs.db).as_sql()[0]
query2 = pickle.loads(pickle.dumps(qs.query))
self.assertEqual(
query2.get_compiler(qs.db).as_sql()[0],
query
)
def test_deferred_load_qs_pickling(self):
# Check pickling of deferred-loading querysets
qs = Item.objects.defer('name', 'creator')
q2 = pickle.loads(pickle.dumps(qs))
self.assertEqual(list(qs), list(q2))
q3 = pickle.loads(pickle.dumps(qs, pickle.HIGHEST_PROTOCOL))
self.assertEqual(list(qs), list(q3))
def test_ticket7277(self):
self.assertSequenceEqual(
self.n1.annotation_set.filter(
Q(tag=self.t5) | Q(tag__children=self.t5) | Q(tag__children__children=self.t5)
),
[self.ann1],
)
def test_tickets_7448_7707(self):
# Complex objects should be converted to strings before being used in
# lookups.
self.assertSequenceEqual(
Item.objects.filter(created__in=[self.time1, self.time2]),
[self.i1, self.i2],
)
def test_ticket7235(self):
# An EmptyQuerySet should not raise exceptions if it is filtered.
Eaten.objects.create(meal='m')
q = Eaten.objects.none()
with self.assertNumQueries(0):
self.assertQuerysetEqual(q.all(), [])
self.assertQuerysetEqual(q.filter(meal='m'), [])
self.assertQuerysetEqual(q.exclude(meal='m'), [])
self.assertQuerysetEqual(q.complex_filter({'pk': 1}), [])
self.assertQuerysetEqual(q.select_related('food'), [])
self.assertQuerysetEqual(q.annotate(Count('food')), [])
self.assertQuerysetEqual(q.order_by('meal', 'food'), [])
self.assertQuerysetEqual(q.distinct(), [])
self.assertQuerysetEqual(
q.extra(select={'foo': "1"}),
[]
)
self.assertQuerysetEqual(q.reverse(), [])
q.query.low_mark = 1
msg = 'Cannot change a query once a slice has been taken.'
with self.assertRaisesMessage(TypeError, msg):
q.extra(select={'foo': "1"})
self.assertQuerysetEqual(q.defer('meal'), [])
self.assertQuerysetEqual(q.only('meal'), [])
def test_ticket7791(self):
# There were "issues" when ordering and distinct-ing on fields related
# via ForeignKeys.
self.assertEqual(
len(Note.objects.order_by('extrainfo__info').distinct()),
3
)
# Pickling of QuerySets using datetimes() should work.
qs = Item.objects.datetimes('created', 'month')
pickle.loads(pickle.dumps(qs))
def test_ticket9997(self):
# If a ValuesList or Values queryset is passed as an inner query, we
# make sure it's only requesting a single value and use that as the
# thing to select.
self.assertSequenceEqual(
Tag.objects.filter(name__in=Tag.objects.filter(parent=self.t1).values('name')),
[self.t2, self.t3],
)
# Multi-valued values() and values_list() querysets should raise errors.
with self.assertRaisesMessage(TypeError, 'Cannot use multi-field values as a filter value.'):
Tag.objects.filter(name__in=Tag.objects.filter(parent=self.t1).values('name', 'id'))
with self.assertRaisesMessage(TypeError, 'Cannot use multi-field values as a filter value.'):
Tag.objects.filter(name__in=Tag.objects.filter(parent=self.t1).values_list('name', 'id'))
def test_ticket9985(self):
# qs.values_list(...).values(...) combinations should work.
self.assertSequenceEqual(
Note.objects.values_list("note", flat=True).values("id").order_by("id"),
[{'id': 1}, {'id': 2}, {'id': 3}]
)
self.assertSequenceEqual(
Annotation.objects.filter(notes__in=Note.objects.filter(note="n1").values_list('note').values('id')),
[self.ann1],
)
def test_ticket10205(self):
# When bailing out early because of an empty "__in" filter, we need
# to set things up correctly internally so that subqueries can continue properly.
self.assertEqual(Tag.objects.filter(name__in=()).update(name="foo"), 0)
def test_ticket10432(self):
# Testing an empty "__in" filter with a generator as the value.
def f():
return iter([])
n_obj = Note.objects.all()[0]
def g():
yield n_obj.pk
self.assertQuerysetEqual(Note.objects.filter(pk__in=f()), [])
self.assertEqual(list(Note.objects.filter(pk__in=g())), [n_obj])
def test_ticket10742(self):
# Queries used in an __in clause don't execute subqueries
subq = Author.objects.filter(num__lt=3000)
qs = Author.objects.filter(pk__in=subq)
self.assertSequenceEqual(qs, [self.a1, self.a2])
# The subquery result cache should not be populated
self.assertIsNone(subq._result_cache)
subq = Author.objects.filter(num__lt=3000)
qs = Author.objects.exclude(pk__in=subq)
self.assertSequenceEqual(qs, [self.a3, self.a4])
# The subquery result cache should not be populated
self.assertIsNone(subq._result_cache)
subq = Author.objects.filter(num__lt=3000)
self.assertSequenceEqual(
Author.objects.filter(Q(pk__in=subq) & Q(name='a1')),
[self.a1],
)
# The subquery result cache should not be populated
self.assertIsNone(subq._result_cache)
def test_ticket7076(self):
# Excluding shouldn't eliminate NULL entries.
self.assertSequenceEqual(
Item.objects.exclude(modified=self.time1).order_by('name'),
[self.i4, self.i3, self.i2],
)
self.assertSequenceEqual(
Tag.objects.exclude(parent__name=self.t1.name),
[self.t1, self.t4, self.t5],
)
def test_ticket7181(self):
# Ordering by related tables should accommodate nullable fields (this
# test is a little tricky, since NULL ordering is database dependent.
# Instead, we just count the number of results).
self.assertEqual(len(Tag.objects.order_by('parent__name')), 5)
# Empty querysets can be merged with others.
self.assertSequenceEqual(
Note.objects.none() | Note.objects.all(),
[self.n1, self.n2, self.n3],
)
self.assertSequenceEqual(
Note.objects.all() | Note.objects.none(),
[self.n1, self.n2, self.n3],
)
self.assertSequenceEqual(Note.objects.none() & Note.objects.all(), [])
self.assertSequenceEqual(Note.objects.all() & Note.objects.none(), [])
def test_ticket8439(self):
# Complex combinations of conjunctions, disjunctions and nullable
# relations.
self.assertSequenceEqual(
Author.objects.filter(Q(item__note__extrainfo=self.e2) | Q(report=self.r1, name='xyz')),
[self.a2],
)
self.assertSequenceEqual(
Author.objects.filter(Q(report=self.r1, name='xyz') | Q(item__note__extrainfo=self.e2)),
[self.a2],
)
self.assertSequenceEqual(
Annotation.objects.filter(Q(tag__parent=self.t1) | Q(notes__note='n1', name='a1')),
[self.ann1],
)
xx = ExtraInfo.objects.create(info='xx', note=self.n3)
self.assertSequenceEqual(
Note.objects.filter(Q(extrainfo__author=self.a1) | Q(extrainfo=xx)),
[self.n1, self.n3],
)
q = Note.objects.filter(Q(extrainfo__author=self.a1) | Q(extrainfo=xx)).query
self.assertEqual(
len([x for x in q.alias_map.values() if x.join_type == LOUTER and q.alias_refcount[x.table_alias]]),
1
)
def test_ticket17429(self):
"""
Meta.ordering=None works the same as Meta.ordering=[]
"""
original_ordering = Tag._meta.ordering
Tag._meta.ordering = None
try:
self.assertCountEqual(
Tag.objects.all(),
[self.t1, self.t2, self.t3, self.t4, self.t5],
)
finally:
Tag._meta.ordering = original_ordering
def test_exclude(self):
self.assertQuerysetEqual(
Item.objects.exclude(tags__name='t4'),
Item.objects.filter(~Q(tags__name='t4')))
self.assertQuerysetEqual(
Item.objects.exclude(Q(tags__name='t4') | Q(tags__name='t3')),
Item.objects.filter(~(Q(tags__name='t4') | Q(tags__name='t3'))))
self.assertQuerysetEqual(
Item.objects.exclude(Q(tags__name='t4') | ~Q(tags__name='t3')),
Item.objects.filter(~(Q(tags__name='t4') | ~Q(tags__name='t3'))))
def test_nested_exclude(self):
self.assertQuerysetEqual(
Item.objects.exclude(~Q(tags__name='t4')),
Item.objects.filter(~~Q(tags__name='t4')))
def test_double_exclude(self):
self.assertQuerysetEqual(
Item.objects.filter(Q(tags__name='t4')),
Item.objects.filter(~~Q(tags__name='t4')))
self.assertQuerysetEqual(
Item.objects.filter(Q(tags__name='t4')),
Item.objects.filter(~Q(~Q(tags__name='t4'))))
def test_exclude_in(self):
self.assertQuerysetEqual(
Item.objects.exclude(Q(tags__name__in=['t4', 't3'])),
Item.objects.filter(~Q(tags__name__in=['t4', 't3'])))
self.assertQuerysetEqual(
Item.objects.filter(Q(tags__name__in=['t4', 't3'])),
Item.objects.filter(~~Q(tags__name__in=['t4', 't3'])))
def test_ticket_10790_1(self):
# Querying direct fields with isnull should trim the left outer join.
# It also should not create INNER JOIN.
q = Tag.objects.filter(parent__isnull=True)
self.assertSequenceEqual(q, [self.t1])
self.assertNotIn('JOIN', str(q.query))
q = Tag.objects.filter(parent__isnull=False)
self.assertSequenceEqual(q, [self.t2, self.t3, self.t4, self.t5])
self.assertNotIn('JOIN', str(q.query))
q = Tag.objects.exclude(parent__isnull=True)
self.assertSequenceEqual(q, [self.t2, self.t3, self.t4, self.t5])
self.assertNotIn('JOIN', str(q.query))
q = Tag.objects.exclude(parent__isnull=False)
self.assertSequenceEqual(q, [self.t1])
self.assertNotIn('JOIN', str(q.query))
q = Tag.objects.exclude(parent__parent__isnull=False)
self.assertSequenceEqual(q, [self.t1, self.t2, self.t3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 1)
self.assertNotIn('INNER JOIN', str(q.query))
def test_ticket_10790_2(self):
# Querying across several tables should strip only the last outer join,
# while preserving the preceding inner joins.
q = Tag.objects.filter(parent__parent__isnull=False)
self.assertSequenceEqual(q, [self.t4, self.t5])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 1)
# Querying without isnull should not convert anything to left outer join.
q = Tag.objects.filter(parent__parent=self.t1)
self.assertSequenceEqual(q, [self.t4, self.t5])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 1)
def test_ticket_10790_3(self):
# Querying via indirect fields should populate the left outer join
q = NamedCategory.objects.filter(tag__isnull=True)
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 1)
# join to dumbcategory ptr_id
self.assertEqual(str(q.query).count('INNER JOIN'), 1)
self.assertSequenceEqual(q, [])
# Querying across several tables should strip only the last join, while
# preserving the preceding left outer joins.
q = NamedCategory.objects.filter(tag__parent__isnull=True)
self.assertEqual(str(q.query).count('INNER JOIN'), 1)
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 1)
self.assertSequenceEqual(q, [self.nc1])
def test_ticket_10790_4(self):
# Querying across m2m field should not strip the m2m table from join.
q = Author.objects.filter(item__tags__isnull=True)
self.assertSequenceEqual(q, [self.a2, self.a3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 2)
self.assertNotIn('INNER JOIN', str(q.query))
q = Author.objects.filter(item__tags__parent__isnull=True)
self.assertSequenceEqual(q, [self.a1, self.a2, self.a2, self.a3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 3)
self.assertNotIn('INNER JOIN', str(q.query))
def test_ticket_10790_5(self):
# Querying with isnull=False across m2m field should not create outer joins
q = Author.objects.filter(item__tags__isnull=False)
self.assertSequenceEqual(q, [self.a1, self.a1, self.a2, self.a2, self.a4])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 2)
q = Author.objects.filter(item__tags__parent__isnull=False)
self.assertSequenceEqual(q, [self.a1, self.a2, self.a4])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 3)
q = Author.objects.filter(item__tags__parent__parent__isnull=False)
self.assertSequenceEqual(q, [self.a4])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 4)
def test_ticket_10790_6(self):
# Querying with isnull=True across m2m field should not create inner joins
# and strip last outer join
q = Author.objects.filter(item__tags__parent__parent__isnull=True)
self.assertSequenceEqual(
q,
[self.a1, self.a1, self.a2, self.a2, self.a2, self.a3],
)
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 4)
self.assertEqual(str(q.query).count('INNER JOIN'), 0)
q = Author.objects.filter(item__tags__parent__isnull=True)
self.assertSequenceEqual(q, [self.a1, self.a2, self.a2, self.a3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 3)
self.assertEqual(str(q.query).count('INNER JOIN'), 0)
def test_ticket_10790_7(self):
# Reverse querying with isnull should not strip the join
q = Author.objects.filter(item__isnull=True)
self.assertSequenceEqual(q, [self.a3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 1)
self.assertEqual(str(q.query).count('INNER JOIN'), 0)
q = Author.objects.filter(item__isnull=False)
self.assertSequenceEqual(q, [self.a1, self.a2, self.a2, self.a4])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 1)
def test_ticket_10790_8(self):
# Querying with combined q-objects should also strip the left outer join
q = Tag.objects.filter(Q(parent__isnull=True) | Q(parent=self.t1))
self.assertSequenceEqual(q, [self.t1, self.t2, self.t3])
self.assertEqual(str(q.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q.query).count('INNER JOIN'), 0)
def test_ticket_10790_combine(self):
# Combining queries should not re-populate the left outer join
q1 = Tag.objects.filter(parent__isnull=True)
q2 = Tag.objects.filter(parent__isnull=False)
q3 = q1 | q2
self.assertSequenceEqual(q3, [self.t1, self.t2, self.t3, self.t4, self.t5])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
q3 = q1 & q2
self.assertSequenceEqual(q3, [])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
q2 = Tag.objects.filter(parent=self.t1)
q3 = q1 | q2
self.assertSequenceEqual(q3, [self.t1, self.t2, self.t3])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
q3 = q2 | q1
self.assertSequenceEqual(q3, [self.t1, self.t2, self.t3])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
q1 = Tag.objects.filter(parent__isnull=True)
q2 = Tag.objects.filter(parent__parent__isnull=True)
q3 = q1 | q2
self.assertSequenceEqual(q3, [self.t1, self.t2, self.t3])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 1)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
q3 = q2 | q1
self.assertSequenceEqual(q3, [self.t1, self.t2, self.t3])
self.assertEqual(str(q3.query).count('LEFT OUTER JOIN'), 1)
self.assertEqual(str(q3.query).count('INNER JOIN'), 0)
def test_ticket19672(self):
self.assertSequenceEqual(
Report.objects.filter(Q(creator__isnull=False) & ~Q(creator__extra__value=41)),
[self.r1],
)
def test_ticket_20250(self):
# A negated Q along with an annotated queryset failed in Django 1.4
qs = Author.objects.annotate(Count('item'))
qs = qs.filter(~Q(extra__value=0)).order_by('name')
self.assertIn('SELECT', str(qs.query))
self.assertSequenceEqual(qs, [self.a1, self.a2, self.a3, self.a4])
def test_lookup_constraint_fielderror(self):
msg = (
"Cannot resolve keyword 'unknown_field' into field. Choices are: "
"annotation, category, category_id, children, id, item, "
"managedmodel, name, note, parent, parent_id"
)
with self.assertRaisesMessage(FieldError, msg):
Tag.objects.filter(unknown_field__name='generic')
def test_common_mixed_case_foreign_keys(self):
"""
Valid query should be generated when fields fetched from joined tables
include FKs whose names only differ by case.
"""
c1 = SimpleCategory.objects.create(name='c1')
c2 = SimpleCategory.objects.create(name='c2')
c3 = SimpleCategory.objects.create(name='c3')
category = CategoryItem.objects.create(category=c1)
mixed_case_field_category = MixedCaseFieldCategoryItem.objects.create(CaTeGoRy=c2)
mixed_case_db_column_category = MixedCaseDbColumnCategoryItem.objects.create(category=c3)
CommonMixedCaseForeignKeys.objects.create(
category=category,
mixed_case_field_category=mixed_case_field_category,
mixed_case_db_column_category=mixed_case_db_column_category,
)
qs = CommonMixedCaseForeignKeys.objects.values(
'category',
'mixed_case_field_category',
'mixed_case_db_column_category',
'category__category',
'mixed_case_field_category__CaTeGoRy',
'mixed_case_db_column_category__category',
)
self.assertTrue(qs.first())
def test_excluded_intermediary_m2m_table_joined(self):
self.assertSequenceEqual(
Note.objects.filter(~Q(tag__annotation__name=F('note'))),
[self.n1, self.n2, self.n3],
)
self.assertSequenceEqual(
Note.objects.filter(tag__annotation__name='a1').filter(~Q(tag__annotation__name=F('note'))),
[],
)
def test_field_with_filterable(self):
self.assertSequenceEqual(
Author.objects.filter(extra=self.e2),
[self.a3, self.a4],
)
def test_negate_field(self):
self.assertSequenceEqual(
Note.objects.filter(negate=True),
[self.n1, self.n2],
)
self.assertSequenceEqual(Note.objects.exclude(negate=True), [self.n3])
class Queries2Tests(TestCase):
@classmethod
def setUpTestData(cls):
cls.num4 = Number.objects.create(num=4)
cls.num8 = Number.objects.create(num=8)
cls.num12 = Number.objects.create(num=12)
def test_ticket4289(self):
# A slight variation on the restricting the filtering choices by the
# lookup constraints.
self.assertSequenceEqual(Number.objects.filter(num__lt=4), [])
self.assertSequenceEqual(Number.objects.filter(num__gt=8, num__lt=12), [])
self.assertSequenceEqual(
Number.objects.filter(num__gt=8, num__lt=13),
[self.num12],
)
self.assertSequenceEqual(
Number.objects.filter(Q(num__lt=4) | Q(num__gt=8, num__lt=12)),
[]
)
self.assertSequenceEqual(
Number.objects.filter(Q(num__gt=8, num__lt=12) | Q(num__lt=4)),
[]
)
self.assertSequenceEqual(
Number.objects.filter(Q(num__gt=8) & Q(num__lt=12) | Q(num__lt=4)),
[]
)
self.assertSequenceEqual(
Number.objects.filter(Q(num__gt=7) & Q(num__lt=12) | Q(num__lt=4)),
[self.num8],
)
def test_ticket12239(self):
# Custom lookups are registered to round float values correctly on gte
# and lt IntegerField queries.
self.assertSequenceEqual(
Number.objects.filter(num__gt=11.9),
[self.num12],
)
self.assertSequenceEqual(Number.objects.filter(num__gt=12), [])
self.assertSequenceEqual(Number.objects.filter(num__gt=12.0), [])
self.assertSequenceEqual(Number.objects.filter(num__gt=12.1), [])
self.assertCountEqual(
Number.objects.filter(num__lt=12),
[self.num4, self.num8],
)
self.assertCountEqual(
Number.objects.filter(num__lt=12.0),
[self.num4, self.num8],
)
self.assertCountEqual(
Number.objects.filter(num__lt=12.1),
[self.num4, self.num8, self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__gte=11.9),
[self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__gte=12),
[self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__gte=12.0),
[self.num12],
)
self.assertSequenceEqual(Number.objects.filter(num__gte=12.1), [])
self.assertSequenceEqual(Number.objects.filter(num__gte=12.9), [])
self.assertCountEqual(
Number.objects.filter(num__lte=11.9),
[self.num4, self.num8],
)
self.assertCountEqual(
Number.objects.filter(num__lte=12),
[self.num4, self.num8, self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__lte=12.0),
[self.num4, self.num8, self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__lte=12.1),
[self.num4, self.num8, self.num12],
)
self.assertCountEqual(
Number.objects.filter(num__lte=12.9),
[self.num4, self.num8, self.num12],
)
def test_ticket7759(self):
# Count should work with a partially read result set.
count = Number.objects.count()
qs = Number.objects.all()
def run():
for obj in qs:
return qs.count() == count
self.assertTrue(run())
class Queries3Tests(TestCase):
def test_ticket7107(self):
# This shouldn't create an infinite loop.
self.assertQuerysetEqual(Valid.objects.all(), [])
def test_datetimes_invalid_field(self):
# An error should be raised when QuerySet.datetimes() is passed the
# wrong type of field.
msg = "'name' isn't a DateField, TimeField, or DateTimeField."
with self.assertRaisesMessage(TypeError, msg):
Item.objects.datetimes('name', 'month')
def test_ticket22023(self):
with self.assertRaisesMessage(TypeError, "Cannot call only() after .values() or .values_list()"):
Valid.objects.values().only()
with self.assertRaisesMessage(TypeError, "Cannot call defer() after .values() or .values_list()"):
Valid.objects.values().defer()
class Queries4Tests(TestCase):
@classmethod
def setUpTestData(cls):
generic = NamedCategory.objects.create(name="Generic")
cls.t1 = Tag.objects.create(name='t1', category=generic)
n1 = Note.objects.create(note='n1', misc='foo')
n2 = Note.objects.create(note='n2', misc='bar')
e1 = ExtraInfo.objects.create(info='e1', note=n1)
e2 = ExtraInfo.objects.create(info='e2', note=n2)
cls.a1 = Author.objects.create(name='a1', num=1001, extra=e1)
cls.a3 = Author.objects.create(name='a3', num=3003, extra=e2)
cls.r1 = Report.objects.create(name='r1', creator=cls.a1)
cls.r2 = Report.objects.create(name='r2', creator=cls.a3)
cls.r3 = Report.objects.create(name='r3')
cls.i1 = Item.objects.create(name='i1', created=datetime.datetime.now(), note=n1, creator=cls.a1)
cls.i2 = Item.objects.create(name='i2', created=datetime.datetime.now(), note=n1, creator=cls.a3)
def test_ticket24525(self):
tag = Tag.objects.create()
anth100 = tag.note_set.create(note='ANTH', misc='100')
math101 = tag.note_set.create(note='MATH', misc='101')
s1 = tag.annotation_set.create(name='1')
s2 = tag.annotation_set.create(name='2')
s1.notes.set([math101, anth100])
s2.notes.set([math101])
result = math101.annotation_set.all() & tag.annotation_set.exclude(notes__in=[anth100])
self.assertEqual(list(result), [s2])
def test_ticket11811(self):
unsaved_category = NamedCategory(name="Other")
msg = 'Unsaved model instance <NamedCategory: Other> cannot be used in an ORM query.'
with self.assertRaisesMessage(ValueError, msg):
Tag.objects.filter(pk=self.t1.pk).update(category=unsaved_category)
def test_ticket14876(self):
# Note: when combining the query we need to have information available
# about the join type of the trimmed "creator__isnull" join. If we
# don't have that information, then the join is created as INNER JOIN
# and results will be incorrect.
q1 = Report.objects.filter(Q(creator__isnull=True) | Q(creator__extra__info='e1'))
q2 = Report.objects.filter(Q(creator__isnull=True)) | Report.objects.filter(Q(creator__extra__info='e1'))
self.assertCountEqual(q1, [self.r1, self.r3])
self.assertEqual(str(q1.query), str(q2.query))
q1 = Report.objects.filter(Q(creator__extra__info='e1') | Q(creator__isnull=True))
q2 = Report.objects.filter(Q(creator__extra__info='e1')) | Report.objects.filter(Q(creator__isnull=True))
self.assertCountEqual(q1, [self.r1, self.r3])
self.assertEqual(str(q1.query), str(q2.query))
q1 = Item.objects.filter(Q(creator=self.a1) | Q(creator__report__name='r1')).order_by()
q2 = (
Item.objects
.filter(Q(creator=self.a1)).order_by() | Item.objects.filter(Q(creator__report__name='r1'))
.order_by()
)
self.assertCountEqual(q1, [self.i1])
self.assertEqual(str(q1.query), str(q2.query))
q1 = Item.objects.filter(Q(creator__report__name='e1') | Q(creator=self.a1)).order_by()
q2 = (
Item.objects.filter(Q(creator__report__name='e1')).order_by() |
Item.objects.filter(Q(creator=self.a1)).order_by()
)
self.assertCountEqual(q1, [self.i1])
self.assertEqual(str(q1.query), str(q2.query))
def test_combine_join_reuse(self):
# Joins having identical connections are correctly recreated in the
# rhs query, in case the query is ORed together (#18748).
Report.objects.create(name='r4', creator=self.a1)
q1 = Author.objects.filter(report__name='r5')
q2 = Author.objects.filter(report__name='r4').filter(report__name='r1')
combined = q1 | q2
self.assertEqual(str(combined.query).count('JOIN'), 2)
self.assertEqual(len(combined), 1)
self.assertEqual(combined[0].name, 'a1')
def test_combine_or_filter_reuse(self):
combined = Author.objects.filter(name='a1') | Author.objects.filter(name='a3')
self.assertEqual(combined.get(name='a1'), self.a1)
def test_join_reuse_order(self):
# Join aliases are reused in order. This shouldn't raise AssertionError
# because change_map contains a circular reference (#26522).
s1 = School.objects.create()
s2 = School.objects.create()
s3 = School.objects.create()
t1 = Teacher.objects.create()
otherteachers = Teacher.objects.exclude(pk=t1.pk).exclude(friends=t1)
qs1 = otherteachers.filter(schools=s1).filter(schools=s2)
qs2 = otherteachers.filter(schools=s1).filter(schools=s3)
self.assertQuerysetEqual(qs1 | qs2, [])
def test_ticket7095(self):
# Updates that are filtered on the model being updated are somewhat
# tricky in MySQL.
ManagedModel.objects.create(data='mm1', tag=self.t1, public=True)
self.assertEqual(ManagedModel.objects.update(data='mm'), 1)
# A values() or values_list() query across joined models must use outer
# joins appropriately.
# Note: In Oracle, we expect a null CharField to return '' instead of
# None.
if connection.features.interprets_empty_strings_as_nulls:
expected_null_charfield_repr = ''
else:
expected_null_charfield_repr = None
self.assertSequenceEqual(
Report.objects.values_list("creator__extra__info", flat=True).order_by("name"),
['e1', 'e2', expected_null_charfield_repr],
)
# Similarly for select_related(), joins beyond an initial nullable join
# must use outer joins so that all results are included.
self.assertSequenceEqual(
Report.objects.select_related("creator", "creator__extra").order_by("name"),
[self.r1, self.r2, self.r3]
)
# When there are multiple paths to a table from another table, we have
# to be careful not to accidentally reuse an inappropriate join when
# using select_related(). We used to return the parent's Detail record
# here by mistake.
d1 = Detail.objects.create(data="d1")
d2 = Detail.objects.create(data="d2")
m1 = Member.objects.create(name="m1", details=d1)
m2 = Member.objects.create(name="m2", details=d2)
Child.objects.create(person=m2, parent=m1)
obj = m1.children.select_related("person__details")[0]
self.assertEqual(obj.person.details.data, 'd2')
def test_order_by_resetting(self):
# Calling order_by() with no parameters removes any existing ordering on the
# model. But it should still be possible to add new ordering after that.
qs = Author.objects.order_by().order_by('name')
self.assertIn('ORDER BY', qs.query.get_compiler(qs.db).as_sql()[0])
def test_order_by_reverse_fk(self):
# It is possible to order by reverse of foreign key, although that can lead
# to duplicate results.
c1 = SimpleCategory.objects.create(name="category1")
c2 = SimpleCategory.objects.create(name="category2")
CategoryItem.objects.create(category=c1)
CategoryItem.objects.create(category=c2)
CategoryItem.objects.create(category=c1)
self.assertSequenceEqual(SimpleCategory.objects.order_by('categoryitem', 'pk'), [c1, c2, c1])
def test_filter_reverse_non_integer_pk(self):
date_obj = DateTimePK.objects.create()
extra_obj = ExtraInfo.objects.create(info='extra', date=date_obj)
self.assertEqual(
DateTimePK.objects.filter(extrainfo=extra_obj).get(),
date_obj,
)
def test_ticket10181(self):
# Avoid raising an EmptyResultSet if an inner query is probably
# empty (and hence, not executed).
self.assertQuerysetEqual(
Tag.objects.filter(id__in=Tag.objects.filter(id__in=[])),
[]
)
def test_ticket15316_filter_false(self):
c1 = SimpleCategory.objects.create(name="category1")
c2 = SpecialCategory.objects.create(name="named category1", special_name="special1")
c3 = SpecialCategory.objects.create(name="named category2", special_name="special2")
CategoryItem.objects.create(category=c1)
ci2 = CategoryItem.objects.create(category=c2)
ci3 = CategoryItem.objects.create(category=c3)
qs = CategoryItem.objects.filter(category__specialcategory__isnull=False)
self.assertEqual(qs.count(), 2)
self.assertSequenceEqual(qs, [ci2, ci3])
def test_ticket15316_exclude_false(self):
c1 = SimpleCategory.objects.create(name="category1")
c2 = SpecialCategory.objects.create(name="named category1", special_name="special1")
c3 = SpecialCategory.objects.create(name="named category2", special_name="special2")
ci1 = CategoryItem.objects.create(category=c1)
CategoryItem.objects.create(category=c2)
CategoryItem.objects.create(category=c3)
qs = CategoryItem.objects.exclude(category__specialcategory__isnull=False)
self.assertEqual(qs.count(), 1)
self.assertSequenceEqual(qs, [ci1])
def test_ticket15316_filter_true(self):
c1 = SimpleCategory.objects.create(name="category1")
c2 = SpecialCategory.objects.create(name="named category1", special_name="special1")
c3 = SpecialCategory.objects.create(name="named category2", special_name="special2")
ci1 = CategoryItem.objects.create(category=c1)
CategoryItem.objects.create(category=c2)
CategoryItem.objects.create(category=c3)
qs = CategoryItem.objects.filter(category__specialcategory__isnull=True)
self.assertEqual(qs.count(), 1)
self.assertSequenceEqual(qs, [ci1])
def test_ticket15316_exclude_true(self):
c1 = SimpleCategory.objects.create(name="category1")
c2 = SpecialCategory.objects.create(name="named category1", special_name="special1")
c3 = SpecialCategory.objects.create(name="named category2", special_name="special2")
CategoryItem.objects.create(category=c1)
ci2 = CategoryItem.objects.create(category=c2)
ci3 = CategoryItem.objects.create(category=c3)
qs = CategoryItem.objects.exclude(category__specialcategory__isnull=True)
self.assertEqual(qs.count(), 2)
self.assertSequenceEqual(qs, [ci2, ci3])
def test_ticket15316_one2one_filter_false(self):
c = SimpleCategory.objects.create(name="cat")
c0 = SimpleCategory.objects.create(name="cat0")
c1 = SimpleCategory.objects.create(name="category1")
OneToOneCategory.objects.create(category=c1, new_name="new1")
OneToOneCategory.objects.create(category=c0, new_name="new2")
CategoryItem.objects.create(category=c)
ci2 = CategoryItem.objects.create(category=c0)
ci3 = CategoryItem.objects.create(category=c1)
qs = CategoryItem.objects.filter(category__onetoonecategory__isnull=False).order_by('pk')
self.assertEqual(qs.count(), 2)
self.assertSequenceEqual(qs, [ci2, ci3])
def test_ticket15316_one2one_exclude_false(self):
c = SimpleCategory.objects.create(name="cat")
c0 = SimpleCategory.objects.create(name="cat0")
c1 = SimpleCategory.objects.create(name="category1")
OneToOneCategory.objects.create(category=c1, new_name="new1")
OneToOneCategory.objects.create(category=c0, new_name="new2")
ci1 = CategoryItem.objects.create(category=c)
CategoryItem.objects.create(category=c0)
CategoryItem.objects.create(category=c1)
qs = CategoryItem.objects.exclude(category__onetoonecategory__isnull=False)
self.assertEqual(qs.count(), 1)
self.assertSequenceEqual(qs, [ci1])
def test_ticket15316_one2one_filter_true(self):
c = SimpleCategory.objects.create(name="cat")
c0 = SimpleCategory.objects.create(name="cat0")
c1 = SimpleCategory.objects.create(name="category1")
OneToOneCategory.objects.create(category=c1, new_name="new1")
OneToOneCategory.objects.create(category=c0, new_name="new2")
ci1 = CategoryItem.objects.create(category=c)
CategoryItem.objects.create(category=c0)
CategoryItem.objects.create(category=c1)
qs = CategoryItem.objects.filter(category__onetoonecategory__isnull=True)
self.assertEqual(qs.count(), 1)
self.assertSequenceEqual(qs, [ci1])
def test_ticket15316_one2one_exclude_true(self):
c = SimpleCategory.objects.create(name="cat")
c0 = SimpleCategory.objects.create(name="cat0")
c1 = SimpleCategory.objects.create(name="category1")
OneToOneCategory.objects.create(category=c1, new_name="new1")
OneToOneCategory.objects.create(category=c0, new_name="new2")
CategoryItem.objects.create(category=c)
ci2 = CategoryItem.objects.create(category=c0)
ci3 = CategoryItem.objects.create(category=c1)
qs = CategoryItem.objects.exclude(category__onetoonecategory__isnull=True).order_by('pk')
self.assertEqual(qs.count(), 2)
self.assertSequenceEqual(qs, [ci2, ci3])
class Queries5Tests(TestCase):
@classmethod
def setUpTestData(cls):
# Ordering by 'rank' gives us rank2, rank1, rank3. Ordering by the
# Meta.ordering will be rank3, rank2, rank1.
cls.n1 = Note.objects.create(note='n1', misc='foo', id=1)
cls.n2 = Note.objects.create(note='n2', misc='bar', id=2)
e1 = ExtraInfo.objects.create(info='e1', note=cls.n1)
e2 = ExtraInfo.objects.create(info='e2', note=cls.n2)
a1 = Author.objects.create(name='a1', num=1001, extra=e1)
a2 = Author.objects.create(name='a2', num=2002, extra=e1)
a3 = Author.objects.create(name='a3', num=3003, extra=e2)
cls.rank2 = Ranking.objects.create(rank=2, author=a2)
cls.rank1 = Ranking.objects.create(rank=1, author=a3)
cls.rank3 = Ranking.objects.create(rank=3, author=a1)
def test_ordering(self):
# Cross model ordering is possible in Meta, too.
self.assertSequenceEqual(
Ranking.objects.all(),
[self.rank3, self.rank2, self.rank1],
)
self.assertSequenceEqual(
Ranking.objects.all().order_by('rank'),
[self.rank1, self.rank2, self.rank3],
)
# Ordering of extra() pieces is possible, too and you can mix extra
# fields and model fields in the ordering.
self.assertSequenceEqual(
Ranking.objects.extra(tables=['django_site'], order_by=['-django_site.id', 'rank']),
[self.rank1, self.rank2, self.rank3],
)
sql = 'case when %s > 2 then 1 else 0 end' % connection.ops.quote_name('rank')
qs = Ranking.objects.extra(select={'good': sql})
self.assertEqual(
[o.good for o in qs.extra(order_by=('-good',))],
[True, False, False]
)
self.assertSequenceEqual(
qs.extra(order_by=('-good', 'id')),
[self.rank3, self.rank2, self.rank1],
)
# Despite having some extra aliases in the query, we can still omit
# them in a values() query.
dicts = qs.values('id', 'rank').order_by('id')
self.assertEqual(
[d['rank'] for d in dicts],
[2, 1, 3]
)
def test_ticket7256(self):
# An empty values() call includes all aliases, including those from an
# extra()
sql = 'case when %s > 2 then 1 else 0 end' % connection.ops.quote_name('rank')
qs = Ranking.objects.extra(select={'good': sql})
dicts = qs.values().order_by('id')
for d in dicts:
del d['id']
del d['author_id']
self.assertEqual(
[sorted(d.items()) for d in dicts],
[[('good', 0), ('rank', 2)], [('good', 0), ('rank', 1)], [('good', 1), ('rank', 3)]]
)
def test_ticket7045(self):
# Extra tables used to crash SQL construction on the second use.
qs = Ranking.objects.extra(tables=['django_site'])
qs.query.get_compiler(qs.db).as_sql()
# test passes if this doesn't raise an exception.
qs.query.get_compiler(qs.db).as_sql()
def test_ticket9848(self):
# Make sure that updates which only filter on sub-tables don't
# inadvertently update the wrong records (bug #9848).
author_start = Author.objects.get(name='a1')
ranking_start = Ranking.objects.get(author__name='a1')
# Make sure that the IDs from different tables don't happen to match.
self.assertSequenceEqual(
Ranking.objects.filter(author__name='a1'),
[self.rank3],
)
self.assertEqual(
Ranking.objects.filter(author__name='a1').update(rank=4636),
1
)
r = Ranking.objects.get(author__name='a1')
self.assertEqual(r.id, ranking_start.id)
self.assertEqual(r.author.id, author_start.id)
self.assertEqual(r.rank, 4636)
r.rank = 3
r.save()
self.assertSequenceEqual(
Ranking.objects.all(),
[self.rank3, self.rank2, self.rank1],
)
def test_ticket5261(self):
# Test different empty excludes.
self.assertSequenceEqual(
Note.objects.exclude(Q()),
[self.n1, self.n2],
)
self.assertSequenceEqual(
Note.objects.filter(~Q()),
[self.n1, self.n2],
)
self.assertSequenceEqual(
Note.objects.filter(~Q() | ~Q()),
[self.n1, self.n2],
)
self.assertSequenceEqual(
Note.objects.exclude(~Q() & ~Q()),
[self.n1, self.n2],
)
def test_extra_select_literal_percent_s(self):
# Allow %%s to escape select clauses
self.assertEqual(
Note.objects.extra(select={'foo': "'%%s'"})[0].foo,
'%s'
)
self.assertEqual(
Note.objects.extra(select={'foo': "'%%s bar %%s'"})[0].foo,
'%s bar %s'
)
self.assertEqual(
Note.objects.extra(select={'foo': "'bar %%s'"})[0].foo,
'bar %s'
)
def test_queryset_reuse(self):
# Using querysets doesn't mutate aliases.
authors = Author.objects.filter(Q(name='a1') | Q(name='nonexistent'))
self.assertEqual(Ranking.objects.filter(author__in=authors).get(), self.rank3)
self.assertEqual(authors.count(), 1)
class SelectRelatedTests(TestCase):
def test_tickets_3045_3288(self):
# Once upon a time, select_related() with circular relations would loop
# infinitely if you forgot to specify "depth". Now we set an arbitrary
# default upper bound.
self.assertQuerysetEqual(X.objects.all(), [])
self.assertQuerysetEqual(X.objects.select_related(), [])
class SubclassFKTests(TestCase):
def test_ticket7778(self):
# Model subclasses could not be deleted if a nullable foreign key
# relates to a model that relates back.
num_celebs = Celebrity.objects.count()
tvc = TvChef.objects.create(name="Huey")
self.assertEqual(Celebrity.objects.count(), num_celebs + 1)
Fan.objects.create(fan_of=tvc)
Fan.objects.create(fan_of=tvc)
tvc.delete()
# The parent object should have been deleted as well.
self.assertEqual(Celebrity.objects.count(), num_celebs)
class CustomPkTests(TestCase):
def test_ticket7371(self):
self.assertQuerysetEqual(Related.objects.order_by('custom'), [])
class NullableRelOrderingTests(TestCase):
def test_ticket10028(self):
# Ordering by model related to nullable relations(!) should use outer
# joins, so that all results are included.
p1 = Plaything.objects.create(name="p1")
self.assertSequenceEqual(Plaything.objects.all(), [p1])
def test_join_already_in_query(self):
# Ordering by model related to nullable relations should not change
# the join type of already existing joins.
Plaything.objects.create(name="p1")
s = SingleObject.objects.create(name='s')
r = RelatedObject.objects.create(single=s, f=1)
p2 = Plaything.objects.create(name="p2", others=r)
qs = Plaything.objects.all().filter(others__isnull=False).order_by('pk')
self.assertNotIn('JOIN', str(qs.query))
qs = Plaything.objects.all().filter(others__f__isnull=False).order_by('pk')
self.assertIn('INNER', str(qs.query))
qs = qs.order_by('others__single__name')
# The ordering by others__single__pk will add one new join (to single)
# and that join must be LEFT join. The already existing join to related
# objects must be kept INNER. So, we have both an INNER and a LEFT join
# in the query.
self.assertEqual(str(qs.query).count('LEFT'), 1)
self.assertEqual(str(qs.query).count('INNER'), 1)
self.assertSequenceEqual(qs, [p2])
class DisjunctiveFilterTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.n1 = Note.objects.create(note='n1', misc='foo', id=1)
cls.e1 = ExtraInfo.objects.create(info='e1', note=cls.n1)
def test_ticket7872(self):
# Another variation on the disjunctive filtering theme.
# For the purposes of this regression test, it's important that there is no
# Join object related to the LeafA we create.
l1 = LeafA.objects.create(data='first')
self.assertSequenceEqual(LeafA.objects.all(), [l1])
self.assertSequenceEqual(
LeafA.objects.filter(Q(data='first') | Q(join__b__data='second')),
[l1],
)
def test_ticket8283(self):
# Checking that applying filters after a disjunction works correctly.
self.assertSequenceEqual(
(ExtraInfo.objects.filter(note=self.n1) | ExtraInfo.objects.filter(info='e2')).filter(note=self.n1),
[self.e1],
)
self.assertSequenceEqual(
(ExtraInfo.objects.filter(info='e2') | ExtraInfo.objects.filter(note=self.n1)).filter(note=self.n1),
[self.e1],
)
class Queries6Tests(TestCase):
@classmethod
def setUpTestData(cls):
generic = NamedCategory.objects.create(name="Generic")
cls.t1 = Tag.objects.create(name='t1', category=generic)
cls.t2 = Tag.objects.create(name='t2', parent=cls.t1, category=generic)
cls.t3 = Tag.objects.create(name='t3', parent=cls.t1)
cls.t4 = Tag.objects.create(name='t4', parent=cls.t3)
cls.t5 = Tag.objects.create(name='t5', parent=cls.t3)
n1 = Note.objects.create(note='n1', misc='foo', id=1)
cls.ann1 = Annotation.objects.create(name='a1', tag=cls.t1)
cls.ann1.notes.add(n1)
cls.ann2 = Annotation.objects.create(name='a2', tag=cls.t4)
def test_parallel_iterators(self):
# Parallel iterators work.
qs = Tag.objects.all()
i1, i2 = iter(qs), iter(qs)
self.assertEqual(repr(next(i1)), '<Tag: t1>')
self.assertEqual(repr(next(i1)), '<Tag: t2>')
self.assertEqual(repr(next(i2)), '<Tag: t1>')
self.assertEqual(repr(next(i2)), '<Tag: t2>')
self.assertEqual(repr(next(i2)), '<Tag: t3>')
self.assertEqual(repr(next(i1)), '<Tag: t3>')
qs = X.objects.all()
self.assertFalse(qs)
self.assertFalse(qs)
def test_nested_queries_sql(self):
# Nested queries should not evaluate the inner query as part of constructing the
# SQL (so we should see a nested query here, indicated by two "SELECT" calls).
qs = Annotation.objects.filter(notes__in=Note.objects.filter(note="xyzzy"))
self.assertEqual(
qs.query.get_compiler(qs.db).as_sql()[0].count('SELECT'),
2
)
def test_tickets_8921_9188(self):
# Incorrect SQL was being generated for certain types of exclude()
# queries that crossed multi-valued relations (#8921, #9188 and some
# preemptively discovered cases).
self.assertSequenceEqual(
PointerA.objects.filter(connection__pointerb__id=1),
[]
)
self.assertSequenceEqual(
PointerA.objects.exclude(connection__pointerb__id=1),
[]
)
self.assertSequenceEqual(
Tag.objects.exclude(children=None),
[self.t1, self.t3],
)
# This example is tricky because the parent could be NULL, so only checking
# parents with annotations omits some results (tag t1, in this case).
self.assertSequenceEqual(
Tag.objects.exclude(parent__annotation__name="a1"),
[self.t1, self.t4, self.t5],
)
# The annotation->tag link is single values and tag->children links is
# multi-valued. So we have to split the exclude filter in the middle
# and then optimize the inner query without losing results.
self.assertSequenceEqual(
Annotation.objects.exclude(tag__children__name="t2"),
[self.ann2],
)
# Nested queries are possible (although should be used with care, since
# they have performance problems on backends like MySQL.
self.assertSequenceEqual(
Annotation.objects.filter(notes__in=Note.objects.filter(note="n1")),
[self.ann1],
)
def test_ticket3739(self):
# The all() method on querysets returns a copy of the queryset.
q1 = Tag.objects.order_by('name')
self.assertIsNot(q1, q1.all())
def test_ticket_11320(self):
qs = Tag.objects.exclude(category=None).exclude(category__name='foo')
self.assertEqual(str(qs.query).count(' INNER JOIN '), 1)
def test_distinct_ordered_sliced_subquery_aggregation(self):
self.assertEqual(Tag.objects.distinct().order_by('category__name')[:3].count(), 3)
def test_multiple_columns_with_the_same_name_slice(self):
self.assertEqual(
list(Tag.objects.order_by('name').values_list('name', 'category__name')[:2]),
[('t1', 'Generic'), ('t2', 'Generic')],
)
self.assertSequenceEqual(
Tag.objects.order_by('name').select_related('category')[:2],
[self.t1, self.t2],
)
self.assertEqual(
list(Tag.objects.order_by('-name').values_list('name', 'parent__name')[:2]),
[('t5', 't3'), ('t4', 't3')],
)
self.assertSequenceEqual(
Tag.objects.order_by('-name').select_related('parent')[:2],
[self.t5, self.t4],
)
def test_col_alias_quoted(self):
with CaptureQueriesContext(connection) as captured_queries:
self.assertEqual(
Tag.objects.values('parent').annotate(
tag_per_parent=Count('pk'),
).aggregate(Max('tag_per_parent')),
{'tag_per_parent__max': 2},
)
sql = captured_queries[0]['sql']
self.assertIn('AS %s' % connection.ops.quote_name('col1'), sql)
class RawQueriesTests(TestCase):
@classmethod
def setUpTestData(cls):
Note.objects.create(note='n1', misc='foo', id=1)
def test_ticket14729(self):
# Test representation of raw query with one or few parameters passed as list
query = "SELECT * FROM queries_note WHERE note = %s"
params = ['n1']
qs = Note.objects.raw(query, params=params)
self.assertEqual(repr(qs), "<RawQuerySet: SELECT * FROM queries_note WHERE note = n1>")
query = "SELECT * FROM queries_note WHERE note = %s and misc = %s"
params = ['n1', 'foo']
qs = Note.objects.raw(query, params=params)
self.assertEqual(repr(qs), "<RawQuerySet: SELECT * FROM queries_note WHERE note = n1 and misc = foo>")
class GeneratorExpressionTests(SimpleTestCase):
def test_ticket10432(self):
# Using an empty iterator as the rvalue for an "__in"
# lookup is legal.
self.assertCountEqual(Note.objects.filter(pk__in=iter(())), [])
class ComparisonTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.n1 = Note.objects.create(note='n1', misc='foo', id=1)
e1 = ExtraInfo.objects.create(info='e1', note=cls.n1)
cls.a2 = Author.objects.create(name='a2', num=2002, extra=e1)
def test_ticket8597(self):
# Regression tests for case-insensitive comparisons
item_ab = Item.objects.create(name="a_b", created=datetime.datetime.now(), creator=self.a2, note=self.n1)
item_xy = Item.objects.create(name="x%y", created=datetime.datetime.now(), creator=self.a2, note=self.n1)
self.assertSequenceEqual(
Item.objects.filter(name__iexact="A_b"),
[item_ab],
)
self.assertSequenceEqual(
Item.objects.filter(name__iexact="x%Y"),
[item_xy],
)
self.assertSequenceEqual(
Item.objects.filter(name__istartswith="A_b"),
[item_ab],
)
self.assertSequenceEqual(
Item.objects.filter(name__iendswith="A_b"),
[item_ab],
)
class ExistsSql(TestCase):
def test_exists(self):
with CaptureQueriesContext(connection) as captured_queries:
self.assertFalse(Tag.objects.exists())
# Ok - so the exist query worked - but did it include too many columns?
self.assertEqual(len(captured_queries), 1)
qstr = captured_queries[0]['sql']
id, name = connection.ops.quote_name('id'), connection.ops.quote_name('name')
self.assertNotIn(id, qstr)
self.assertNotIn(name, qstr)
def test_ticket_18414(self):
Article.objects.create(name='one', created=datetime.datetime.now())
Article.objects.create(name='one', created=datetime.datetime.now())
Article.objects.create(name='two', created=datetime.datetime.now())
self.assertTrue(Article.objects.exists())
self.assertTrue(Article.objects.distinct().exists())
self.assertTrue(Article.objects.distinct()[1:3].exists())
self.assertFalse(Article.objects.distinct()[1:1].exists())
@skipUnlessDBFeature('can_distinct_on_fields')
def test_ticket_18414_distinct_on(self):
Article.objects.create(name='one', created=datetime.datetime.now())
Article.objects.create(name='one', created=datetime.datetime.now())
Article.objects.create(name='two', created=datetime.datetime.now())
self.assertTrue(Article.objects.distinct('name').exists())
self.assertTrue(Article.objects.distinct('name')[1:2].exists())
self.assertFalse(Article.objects.distinct('name')[2:3].exists())
class QuerysetOrderedTests(unittest.TestCase):
"""
Tests for the Queryset.ordered attribute.
"""
def test_no_default_or_explicit_ordering(self):
self.assertIs(Annotation.objects.all().ordered, False)
def test_cleared_default_ordering(self):
self.assertIs(Tag.objects.all().ordered, True)
self.assertIs(Tag.objects.all().order_by().ordered, False)
def test_explicit_ordering(self):
self.assertIs(Annotation.objects.all().order_by('id').ordered, True)
def test_empty_queryset(self):
self.assertIs(Annotation.objects.none().ordered, True)
def test_order_by_extra(self):
self.assertIs(Annotation.objects.all().extra(order_by=['id']).ordered, True)
def test_annotated_ordering(self):
qs = Annotation.objects.annotate(num_notes=Count('notes'))
self.assertIs(qs.ordered, False)
self.assertIs(qs.order_by('num_notes').ordered, True)
def test_annotated_default_ordering(self):
qs = Tag.objects.annotate(num_notes=Count('pk'))
self.assertIs(qs.ordered, False)
self.assertIs(qs.order_by('name').ordered, True)
def test_annotated_values_default_ordering(self):
qs = Tag.objects.values('name').annotate(num_notes=Count('pk'))
self.assertIs(qs.ordered, False)
self.assertIs(qs.order_by('name').ordered, True)
@skipUnlessDBFeature('allow_sliced_subqueries_with_in')
class SubqueryTests(TestCase):
@classmethod
def setUpTestData(cls):
NamedCategory.objects.create(id=1, name='first')
NamedCategory.objects.create(id=2, name='second')
NamedCategory.objects.create(id=3, name='third')
NamedCategory.objects.create(id=4, name='fourth')
def test_ordered_subselect(self):
"Subselects honor any manual ordering"
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[0:2])
self.assertEqual(set(query.values_list('id', flat=True)), {3, 4})
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[:2])
self.assertEqual(set(query.values_list('id', flat=True)), {3, 4})
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[1:2])
self.assertEqual(set(query.values_list('id', flat=True)), {3})
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[2:])
self.assertEqual(set(query.values_list('id', flat=True)), {1, 2})
def test_slice_subquery_and_query(self):
"""
Slice a query that has a sliced subquery
"""
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[0:2])[0:2]
self.assertEqual({x.id for x in query}, {3, 4})
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[1:3])[1:3]
self.assertEqual({x.id for x in query}, {3})
query = DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[2:])[1:]
self.assertEqual({x.id for x in query}, {2})
def test_related_sliced_subquery(self):
"""
Related objects constraints can safely contain sliced subqueries.
refs #22434
"""
generic = NamedCategory.objects.create(id=5, name="Generic")
t1 = Tag.objects.create(name='t1', category=generic)
t2 = Tag.objects.create(name='t2', category=generic)
ManagedModel.objects.create(data='mm1', tag=t1, public=True)
mm2 = ManagedModel.objects.create(data='mm2', tag=t2, public=True)
query = ManagedModel.normal_manager.filter(
tag__in=Tag.objects.order_by('-id')[:1]
)
self.assertEqual({x.id for x in query}, {mm2.id})
def test_sliced_delete(self):
"Delete queries can safely contain sliced subqueries"
DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[0:1]).delete()
self.assertEqual(set(DumbCategory.objects.values_list('id', flat=True)), {1, 2, 3})
DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[1:2]).delete()
self.assertEqual(set(DumbCategory.objects.values_list('id', flat=True)), {1, 3})
DumbCategory.objects.filter(id__in=DumbCategory.objects.order_by('-id')[1:]).delete()
self.assertEqual(set(DumbCategory.objects.values_list('id', flat=True)), {3})
def test_distinct_ordered_sliced_subquery(self):
# Implicit values('id').
self.assertSequenceEqual(
NamedCategory.objects.filter(
id__in=NamedCategory.objects.distinct().order_by('name')[0:2],
).order_by('name').values_list('name', flat=True), ['first', 'fourth']
)
# Explicit values('id').
self.assertSequenceEqual(
NamedCategory.objects.filter(
id__in=NamedCategory.objects.distinct().order_by('-name').values('id')[0:2],
).order_by('name').values_list('name', flat=True), ['second', 'third']
)
# Annotated value.
self.assertSequenceEqual(
DumbCategory.objects.filter(
id__in=DumbCategory.objects.annotate(
double_id=F('id') * 2
).order_by('id').distinct().values('double_id')[0:2],
).order_by('id').values_list('id', flat=True), [2, 4]
)
class QuerySetBitwiseOperationTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.school = School.objects.create()
cls.room_1 = Classroom.objects.create(school=cls.school, has_blackboard=False, name='Room 1')
cls.room_2 = Classroom.objects.create(school=cls.school, has_blackboard=True, name='Room 2')
cls.room_3 = Classroom.objects.create(school=cls.school, has_blackboard=True, name='Room 3')
cls.room_4 = Classroom.objects.create(school=cls.school, has_blackboard=False, name='Room 4')
@skipUnlessDBFeature('allow_sliced_subqueries_with_in')
def test_or_with_rhs_slice(self):
qs1 = Classroom.objects.filter(has_blackboard=True)
qs2 = Classroom.objects.filter(has_blackboard=False)[:1]
self.assertCountEqual(qs1 | qs2, [self.room_1, self.room_2, self.room_3])
@skipUnlessDBFeature('allow_sliced_subqueries_with_in')
def test_or_with_lhs_slice(self):
qs1 = Classroom.objects.filter(has_blackboard=True)[:1]
qs2 = Classroom.objects.filter(has_blackboard=False)
self.assertCountEqual(qs1 | qs2, [self.room_1, self.room_2, self.room_4])
@skipUnlessDBFeature('allow_sliced_subqueries_with_in')
def test_or_with_both_slice(self):
qs1 = Classroom.objects.filter(has_blackboard=False)[:1]
qs2 = Classroom.objects.filter(has_blackboard=True)[:1]
self.assertCountEqual(qs1 | qs2, [self.room_1, self.room_2])
@skipUnlessDBFeature('allow_sliced_subqueries_with_in')
def test_or_with_both_slice_and_ordering(self):
qs1 = Classroom.objects.filter(has_blackboard=False).order_by('-pk')[:1]
qs2 = Classroom.objects.filter(has_blackboard=True).order_by('-name')[:1]
self.assertCountEqual(qs1 | qs2, [self.room_3, self.room_4])
def test_subquery_aliases(self):
combined = School.objects.filter(pk__isnull=False) & School.objects.filter(
Exists(Classroom.objects.filter(
has_blackboard=True,
school=OuterRef('pk'),
)),
)
self.assertSequenceEqual(combined, [self.school])
nested_combined = School.objects.filter(pk__in=combined.values('pk'))
self.assertSequenceEqual(nested_combined, [self.school])
class CloneTests(TestCase):
def test_evaluated_queryset_as_argument(self):
"#13227 -- If a queryset is already evaluated, it can still be used as a query arg"
n = Note(note='Test1', misc='misc')
n.save()
e = ExtraInfo(info='good', note=n)
e.save()
n_list = Note.objects.all()
# Evaluate the Note queryset, populating the query cache
list(n_list)
# Make one of cached results unpickable.
n_list._result_cache[0].lock = Lock()
with self.assertRaises(TypeError):
pickle.dumps(n_list)
# Use the note queryset in a query, and evaluate
# that query in a way that involves cloning.
self.assertEqual(ExtraInfo.objects.filter(note__in=n_list)[0].info, 'good')
def test_no_model_options_cloning(self):
"""
Cloning a queryset does not get out of hand. While complete
testing is impossible, this is a sanity check against invalid use of
deepcopy. refs #16759.
"""
opts_class = type(Note._meta)
note_deepcopy = getattr(opts_class, "__deepcopy__", None)
opts_class.__deepcopy__ = lambda obj, memo: self.fail("Model options shouldn't be cloned.")
try:
Note.objects.filter(pk__lte=F('pk') + 1).all()
finally:
if note_deepcopy is None:
delattr(opts_class, "__deepcopy__")
else:
opts_class.__deepcopy__ = note_deepcopy
def test_no_fields_cloning(self):
"""
Cloning a queryset does not get out of hand. While complete
testing is impossible, this is a sanity check against invalid use of
deepcopy. refs #16759.
"""
opts_class = type(Note._meta.get_field("misc"))
note_deepcopy = getattr(opts_class, "__deepcopy__", None)
opts_class.__deepcopy__ = lambda obj, memo: self.fail("Model fields shouldn't be cloned")
try:
Note.objects.filter(note=F('misc')).all()
finally:
if note_deepcopy is None:
delattr(opts_class, "__deepcopy__")
else:
opts_class.__deepcopy__ = note_deepcopy
class EmptyQuerySetTests(SimpleTestCase):
def test_emptyqueryset_values(self):
# #14366 -- Calling .values() on an empty QuerySet and then cloning
# that should not cause an error
self.assertCountEqual(Number.objects.none().values('num').order_by('num'), [])
def test_values_subquery(self):
self.assertCountEqual(Number.objects.filter(pk__in=Number.objects.none().values('pk')), [])
self.assertCountEqual(Number.objects.filter(pk__in=Number.objects.none().values_list('pk')), [])
def test_ticket_19151(self):
# #19151 -- Calling .values() or .values_list() on an empty QuerySet
# should return an empty QuerySet and not cause an error.
q = Author.objects.none()
self.assertCountEqual(q.values(), [])
self.assertCountEqual(q.values_list(), [])
class ValuesQuerysetTests(TestCase):
@classmethod
def setUpTestData(cls):
Number.objects.create(num=72)
def test_flat_values_list(self):
qs = Number.objects.values_list("num")
qs = qs.values_list("num", flat=True)
self.assertSequenceEqual(qs, [72])
def test_extra_values(self):
# testing for ticket 14930 issues
qs = Number.objects.extra(select={'value_plus_x': 'num+%s', 'value_minus_x': 'num-%s'}, select_params=(1, 2))
qs = qs.order_by('value_minus_x')
qs = qs.values('num')
self.assertSequenceEqual(qs, [{'num': 72}])
def test_extra_values_order_twice(self):
# testing for ticket 14930 issues
qs = Number.objects.extra(select={'value_plus_one': 'num+1', 'value_minus_one': 'num-1'})
qs = qs.order_by('value_minus_one').order_by('value_plus_one')
qs = qs.values('num')
self.assertSequenceEqual(qs, [{'num': 72}])
def test_extra_values_order_multiple(self):
# Postgres doesn't allow constants in order by, so check for that.
qs = Number.objects.extra(select={
'value_plus_one': 'num+1',
'value_minus_one': 'num-1',
'constant_value': '1'
})
qs = qs.order_by('value_plus_one', 'value_minus_one', 'constant_value')
qs = qs.values('num')
self.assertSequenceEqual(qs, [{'num': 72}])
def test_extra_values_order_in_extra(self):
# testing for ticket 14930 issues
qs = Number.objects.extra(
select={'value_plus_one': 'num+1', 'value_minus_one': 'num-1'},
order_by=['value_minus_one'],
)
qs = qs.values('num')
def test_extra_select_params_values_order_in_extra(self):
# testing for 23259 issue
qs = Number.objects.extra(
select={'value_plus_x': 'num+%s'},
select_params=[1],
order_by=['value_plus_x'],
)
qs = qs.filter(num=72)
qs = qs.values('num')
self.assertSequenceEqual(qs, [{'num': 72}])
def test_extra_multiple_select_params_values_order_by(self):
# testing for 23259 issue
qs = Number.objects.extra(select={'value_plus_x': 'num+%s', 'value_minus_x': 'num-%s'}, select_params=(72, 72))
qs = qs.order_by('value_minus_x')
qs = qs.filter(num=1)
qs = qs.values('num')
self.assertSequenceEqual(qs, [])
def test_extra_values_list(self):
# testing for ticket 14930 issues
qs = Number.objects.extra(select={'value_plus_one': 'num+1'})
qs = qs.order_by('value_plus_one')
qs = qs.values_list('num')
self.assertSequenceEqual(qs, [(72,)])
def test_flat_extra_values_list(self):
# testing for ticket 14930 issues
qs = Number.objects.extra(select={'value_plus_one': 'num+1'})
qs = qs.order_by('value_plus_one')
qs = qs.values_list('num', flat=True)
self.assertSequenceEqual(qs, [72])
def test_field_error_values_list(self):
# see #23443
msg = "Cannot resolve keyword %r into field. Join on 'name' not permitted." % 'foo'
with self.assertRaisesMessage(FieldError, msg):
Tag.objects.values_list('name__foo')
def test_named_values_list_flat(self):
msg = "'flat' and 'named' can't be used together."
with self.assertRaisesMessage(TypeError, msg):
Number.objects.values_list('num', flat=True, named=True)
def test_named_values_list_bad_field_name(self):
msg = "Type names and field names must be valid identifiers: '1'"
with self.assertRaisesMessage(ValueError, msg):
Number.objects.extra(select={'1': 'num+1'}).values_list('1', named=True).first()
def test_named_values_list_with_fields(self):
qs = Number.objects.extra(select={'num2': 'num+1'}).annotate(Count('id'))
values = qs.values_list('num', 'num2', named=True).first()
self.assertEqual(type(values).__name__, 'Row')
self.assertEqual(values._fields, ('num', 'num2'))
self.assertEqual(values.num, 72)
self.assertEqual(values.num2, 73)
def test_named_values_list_without_fields(self):
qs = Number.objects.extra(select={'num2': 'num+1'}).annotate(Count('id'))
values = qs.values_list(named=True).first()
self.assertEqual(type(values).__name__, 'Row')
self.assertEqual(
values._fields,
('num2', 'id', 'num', 'other_num', 'another_num', 'id__count'),
)
self.assertEqual(values.num, 72)
self.assertEqual(values.num2, 73)
self.assertEqual(values.id__count, 1)
def test_named_values_list_expression_with_default_alias(self):
expr = Count('id')
values = Number.objects.annotate(id__count1=expr).values_list(expr, 'id__count1', named=True).first()
self.assertEqual(values._fields, ('id__count2', 'id__count1'))
def test_named_values_list_expression(self):
expr = F('num') + 1
qs = Number.objects.annotate(combinedexpression1=expr).values_list(expr, 'combinedexpression1', named=True)
values = qs.first()
self.assertEqual(values._fields, ('combinedexpression2', 'combinedexpression1'))
def test_named_values_pickle(self):
value = Number.objects.values_list('num', 'other_num', named=True).get()
self.assertEqual(value, (72, None))
self.assertEqual(pickle.loads(pickle.dumps(value)), value)
class QuerySetSupportsPythonIdioms(TestCase):
@classmethod
def setUpTestData(cls):
some_date = datetime.datetime(2014, 5, 16, 12, 1)
cls.articles = [
Article.objects.create(name=f'Article {i}', created=some_date)
for i in range(1, 8)
]
def get_ordered_articles(self):
return Article.objects.all().order_by('name')
def test_can_get_items_using_index_and_slice_notation(self):
self.assertEqual(self.get_ordered_articles()[0].name, 'Article 1')
self.assertSequenceEqual(
self.get_ordered_articles()[1:3],
[self.articles[1], self.articles[2]],
)
def test_slicing_with_steps_can_be_used(self):
self.assertSequenceEqual(
self.get_ordered_articles()[::2], [
self.articles[0],
self.articles[2],
self.articles[4],
self.articles[6],
]
)
def test_slicing_without_step_is_lazy(self):
with self.assertNumQueries(0):
self.get_ordered_articles()[0:5]
def test_slicing_with_tests_is_not_lazy(self):
with self.assertNumQueries(1):
self.get_ordered_articles()[0:5:3]
def test_slicing_can_slice_again_after_slicing(self):
self.assertSequenceEqual(
self.get_ordered_articles()[0:5][0:2],
[self.articles[0], self.articles[1]],
)
self.assertSequenceEqual(self.get_ordered_articles()[0:5][4:], [self.articles[4]])
self.assertSequenceEqual(self.get_ordered_articles()[0:5][5:], [])
# Some more tests!
self.assertSequenceEqual(
self.get_ordered_articles()[2:][0:2],
[self.articles[2], self.articles[3]],
)
self.assertSequenceEqual(
self.get_ordered_articles()[2:][:2],
[self.articles[2], self.articles[3]],
)
self.assertSequenceEqual(self.get_ordered_articles()[2:][2:3], [self.articles[4]])
# Using an offset without a limit is also possible.
self.assertSequenceEqual(
self.get_ordered_articles()[5:],
[self.articles[5], self.articles[6]],
)
def test_slicing_cannot_filter_queryset_once_sliced(self):
msg = 'Cannot filter a query once a slice has been taken.'
with self.assertRaisesMessage(TypeError, msg):
Article.objects.all()[0:5].filter(id=1)
def test_slicing_cannot_reorder_queryset_once_sliced(self):
msg = 'Cannot reorder a query once a slice has been taken.'
with self.assertRaisesMessage(TypeError, msg):
Article.objects.all()[0:5].order_by('id')
def test_slicing_cannot_combine_queries_once_sliced(self):
msg = 'Cannot combine queries once a slice has been taken.'
with self.assertRaisesMessage(TypeError, msg):
Article.objects.all()[0:1] & Article.objects.all()[4:5]
def test_slicing_negative_indexing_not_supported_for_single_element(self):
"""hint: inverting your ordering might do what you need"""
msg = 'Negative indexing is not supported.'
with self.assertRaisesMessage(ValueError, msg):
Article.objects.all()[-1]
def test_slicing_negative_indexing_not_supported_for_range(self):
"""hint: inverting your ordering might do what you need"""
msg = 'Negative indexing is not supported.'
with self.assertRaisesMessage(ValueError, msg):
Article.objects.all()[0:-5]
with self.assertRaisesMessage(ValueError, msg):
Article.objects.all()[-1:]
def test_invalid_index(self):
msg = 'QuerySet indices must be integers or slices, not str.'
with self.assertRaisesMessage(TypeError, msg):
Article.objects.all()['foo']
def test_can_get_number_of_items_in_queryset_using_standard_len(self):
self.assertEqual(len(Article.objects.filter(name__exact='Article 1')), 1)
def test_can_combine_queries_using_and_and_or_operators(self):
s1 = Article.objects.filter(name__exact='Article 1')
s2 = Article.objects.filter(name__exact='Article 2')
self.assertSequenceEqual(
(s1 | s2).order_by('name'),
[self.articles[0], self.articles[1]],
)
self.assertSequenceEqual(s1 & s2, [])
class WeirdQuerysetSlicingTests(TestCase):
@classmethod
def setUpTestData(cls):
Number.objects.create(num=1)
Number.objects.create(num=2)
Article.objects.create(name='one', created=datetime.datetime.now())
Article.objects.create(name='two', created=datetime.datetime.now())
Article.objects.create(name='three', created=datetime.datetime.now())
Article.objects.create(name='four', created=datetime.datetime.now())
food = Food.objects.create(name='spam')
Eaten.objects.create(meal='spam with eggs', food=food)
def test_tickets_7698_10202(self):
# People like to slice with '0' as the high-water mark.
self.assertQuerysetEqual(Article.objects.all()[0:0], [])
self.assertQuerysetEqual(Article.objects.all()[0:0][:10], [])
self.assertEqual(Article.objects.all()[:0].count(), 0)
msg = 'Cannot change a query once a slice has been taken.'
with self.assertRaisesMessage(TypeError, msg):
Article.objects.all()[:0].latest('created')
def test_empty_resultset_sql(self):
# ticket #12192
self.assertNumQueries(0, lambda: list(Number.objects.all()[1:1]))
def test_empty_sliced_subquery(self):
self.assertEqual(Eaten.objects.filter(food__in=Food.objects.all()[0:0]).count(), 0)
def test_empty_sliced_subquery_exclude(self):
self.assertEqual(Eaten.objects.exclude(food__in=Food.objects.all()[0:0]).count(), 1)
def test_zero_length_values_slicing(self):
n = 42
with self.assertNumQueries(0):
self.assertQuerysetEqual(Article.objects.values()[n:n], [])
self.assertQuerysetEqual(Article.objects.values_list()[n:n], [])
class EscapingTests(TestCase):
def test_ticket_7302(self):
# Reserved names are appropriately escaped
r_a = ReservedName.objects.create(name='a', order=42)
r_b = ReservedName.objects.create(name='b', order=37)
self.assertSequenceEqual(
ReservedName.objects.all().order_by('order'),
[r_b, r_a],
)
self.assertSequenceEqual(
ReservedName.objects.extra(select={'stuff': 'name'}, order_by=('order', 'stuff')),
[r_b, r_a],
)
class ToFieldTests(TestCase):
def test_in_query(self):
apple = Food.objects.create(name="apple")
pear = Food.objects.create(name="pear")
lunch = Eaten.objects.create(food=apple, meal="lunch")
dinner = Eaten.objects.create(food=pear, meal="dinner")
self.assertEqual(
set(Eaten.objects.filter(food__in=[apple, pear])),
{lunch, dinner},
)
def test_in_subquery(self):
apple = Food.objects.create(name="apple")
lunch = Eaten.objects.create(food=apple, meal="lunch")
self.assertEqual(
set(Eaten.objects.filter(food__in=Food.objects.filter(name='apple'))),
{lunch}
)
self.assertEqual(
set(Eaten.objects.filter(food__in=Food.objects.filter(name='apple').values('eaten__meal'))),
set()
)
self.assertEqual(
set(Food.objects.filter(eaten__in=Eaten.objects.filter(meal='lunch'))),
{apple}
)
def test_nested_in_subquery(self):
extra = ExtraInfo.objects.create()
author = Author.objects.create(num=42, extra=extra)
report = Report.objects.create(creator=author)
comment = ReportComment.objects.create(report=report)
comments = ReportComment.objects.filter(
report__in=Report.objects.filter(
creator__in=extra.author_set.all(),
),
)
self.assertSequenceEqual(comments, [comment])
def test_reverse_in(self):
apple = Food.objects.create(name="apple")
pear = Food.objects.create(name="pear")
lunch_apple = Eaten.objects.create(food=apple, meal="lunch")
lunch_pear = Eaten.objects.create(food=pear, meal="dinner")
self.assertEqual(
set(Food.objects.filter(eaten__in=[lunch_apple, lunch_pear])),
{apple, pear}
)
def test_single_object(self):
apple = Food.objects.create(name="apple")
lunch = Eaten.objects.create(food=apple, meal="lunch")
dinner = Eaten.objects.create(food=apple, meal="dinner")
self.assertEqual(
set(Eaten.objects.filter(food=apple)),
{lunch, dinner}
)
def test_single_object_reverse(self):
apple = Food.objects.create(name="apple")
lunch = Eaten.objects.create(food=apple, meal="lunch")
self.assertEqual(
set(Food.objects.filter(eaten=lunch)),
{apple}
)
def test_recursive_fk(self):
node1 = Node.objects.create(num=42)
node2 = Node.objects.create(num=1, parent=node1)
self.assertEqual(
list(Node.objects.filter(parent=node1)),
[node2]
)
def test_recursive_fk_reverse(self):
node1 = Node.objects.create(num=42)
node2 = Node.objects.create(num=1, parent=node1)
self.assertEqual(
list(Node.objects.filter(node=node2)),
[node1]
)
class IsNullTests(TestCase):
def test_primary_key(self):
custom = CustomPk.objects.create(name='pk')
null = Related.objects.create()
notnull = Related.objects.create(custom=custom)
self.assertSequenceEqual(Related.objects.filter(custom__isnull=False), [notnull])
self.assertSequenceEqual(Related.objects.filter(custom__isnull=True), [null])
def test_to_field(self):
apple = Food.objects.create(name="apple")
e1 = Eaten.objects.create(food=apple, meal="lunch")
e2 = Eaten.objects.create(meal="lunch")
self.assertSequenceEqual(
Eaten.objects.filter(food__isnull=False),
[e1],
)
self.assertSequenceEqual(
Eaten.objects.filter(food__isnull=True),
[e2],
)
class ConditionalTests(TestCase):
"""Tests whose execution depend on different environment conditions like
Python version or DB backend features"""
@classmethod
def setUpTestData(cls):
generic = NamedCategory.objects.create(name="Generic")
t1 = Tag.objects.create(name='t1', category=generic)
Tag.objects.create(name='t2', parent=t1, category=generic)
t3 = Tag.objects.create(name='t3', parent=t1)
Tag.objects.create(name='t4', parent=t3)
Tag.objects.create(name='t5', parent=t3)
def test_infinite_loop(self):
# If you're not careful, it's possible to introduce infinite loops via
# default ordering on foreign keys in a cycle. We detect that.
with self.assertRaisesMessage(FieldError, 'Infinite loop caused by ordering.'):
list(LoopX.objects.all()) # Force queryset evaluation with list()
with self.assertRaisesMessage(FieldError, 'Infinite loop caused by ordering.'):
list(LoopZ.objects.all()) # Force queryset evaluation with list()
# Note that this doesn't cause an infinite loop, since the default
# ordering on the Tag model is empty (and thus defaults to using "id"
# for the related field).
self.assertEqual(len(Tag.objects.order_by('parent')), 5)
# ... but you can still order in a non-recursive fashion among linked
# fields (the previous test failed because the default ordering was
# recursive).
self.assertQuerysetEqual(
LoopX.objects.all().order_by('y__x__y__x__id'),
[]
)
# When grouping without specifying ordering, we add an explicit "ORDER BY NULL"
# portion in MySQL to prevent unnecessary sorting.
@skipUnlessDBFeature('requires_explicit_null_ordering_when_grouping')
def test_null_ordering_added(self):
query = Tag.objects.values_list('parent_id', flat=True).order_by().query
query.group_by = ['parent_id']
sql = query.get_compiler(DEFAULT_DB_ALIAS).as_sql()[0]
fragment = "ORDER BY "
pos = sql.find(fragment)
self.assertEqual(sql.find(fragment, pos + 1), -1)
self.assertEqual(sql.find("NULL", pos + len(fragment)), pos + len(fragment))
def test_in_list_limit(self):
# The "in" lookup works with lists of 1000 items or more.
# The numbers amount is picked to force three different IN batches
# for Oracle, yet to be less than 2100 parameter limit for MSSQL.
numbers = list(range(2050))
max_query_params = connection.features.max_query_params
if max_query_params is None or max_query_params >= len(numbers):
Number.objects.bulk_create(Number(num=num) for num in numbers)
for number in [1000, 1001, 2000, len(numbers)]:
with self.subTest(number=number):
self.assertEqual(Number.objects.filter(num__in=numbers[:number]).count(), number)
class UnionTests(unittest.TestCase):
"""
Tests for the union of two querysets. Bug #12252.
"""
@classmethod
def setUpTestData(cls):
objectas = []
objectbs = []
objectcs = []
a_info = ['one', 'two', 'three']
for name in a_info:
o = ObjectA(name=name)
o.save()
objectas.append(o)
b_info = [('un', 1, objectas[0]), ('deux', 2, objectas[0]), ('trois', 3, objectas[2])]
for name, number, objecta in b_info:
o = ObjectB(name=name, num=number, objecta=objecta)
o.save()
objectbs.append(o)
c_info = [('ein', objectas[2], objectbs[2]), ('zwei', objectas[1], objectbs[1])]
for name, objecta, objectb in c_info:
o = ObjectC(name=name, objecta=objecta, objectb=objectb)
o.save()
objectcs.append(o)
def check_union(self, model, Q1, Q2):
filter = model.objects.filter
self.assertEqual(set(filter(Q1) | filter(Q2)), set(filter(Q1 | Q2)))
self.assertEqual(set(filter(Q2) | filter(Q1)), set(filter(Q1 | Q2)))
def test_A_AB(self):
Q1 = Q(name='two')
Q2 = Q(objectb__name='deux')
self.check_union(ObjectA, Q1, Q2)
def test_A_AB2(self):
Q1 = Q(name='two')
Q2 = Q(objectb__name='deux', objectb__num=2)
self.check_union(ObjectA, Q1, Q2)
def test_AB_ACB(self):
Q1 = Q(objectb__name='deux')
Q2 = Q(objectc__objectb__name='deux')
self.check_union(ObjectA, Q1, Q2)
def test_BAB_BAC(self):
Q1 = Q(objecta__objectb__name='deux')
Q2 = Q(objecta__objectc__name='ein')
self.check_union(ObjectB, Q1, Q2)
def test_BAB_BACB(self):
Q1 = Q(objecta__objectb__name='deux')
Q2 = Q(objecta__objectc__objectb__name='trois')
self.check_union(ObjectB, Q1, Q2)
def test_BA_BCA__BAB_BAC_BCA(self):
Q1 = Q(objecta__name='one', objectc__objecta__name='two')
Q2 = Q(objecta__objectc__name='ein', objectc__objecta__name='three', objecta__objectb__name='trois')
self.check_union(ObjectB, Q1, Q2)
class DefaultValuesInsertTest(TestCase):
def test_no_extra_params(self):
"""
Can create an instance of a model with only the PK field (#17056)."
"""
DumbCategory.objects.create()
class ExcludeTests(TestCase):
@classmethod
def setUpTestData(cls):
f1 = Food.objects.create(name='apples')
cls.f2 = Food.objects.create(name='oranges')
Eaten.objects.create(food=f1, meal='dinner')
cls.j1 = Job.objects.create(name='Manager')
cls.r1 = Responsibility.objects.create(description='Playing golf')
cls.j2 = Job.objects.create(name='Programmer')
cls.r2 = Responsibility.objects.create(description='Programming')
JobResponsibilities.objects.create(job=cls.j1, responsibility=cls.r1)
JobResponsibilities.objects.create(job=cls.j2, responsibility=cls.r2)
def test_to_field(self):
self.assertSequenceEqual(
Food.objects.exclude(eaten__meal='dinner'),
[self.f2],
)
self.assertSequenceEqual(
Job.objects.exclude(responsibilities__description='Playing golf'),
[self.j2],
)
self.assertSequenceEqual(
Responsibility.objects.exclude(jobs__name='Manager'),
[self.r2],
)
def test_ticket14511(self):
alex = Person.objects.get_or_create(name='Alex')[0]
jane = Person.objects.get_or_create(name='Jane')[0]
oracle = Company.objects.get_or_create(name='Oracle')[0]
google = Company.objects.get_or_create(name='Google')[0]
microsoft = Company.objects.get_or_create(name='Microsoft')[0]
intel = Company.objects.get_or_create(name='Intel')[0]
def employ(employer, employee, title):
Employment.objects.get_or_create(employee=employee, employer=employer, title=title)
employ(oracle, alex, 'Engineer')
employ(oracle, alex, 'Developer')
employ(google, alex, 'Engineer')
employ(google, alex, 'Manager')
employ(microsoft, alex, 'Manager')
employ(intel, alex, 'Manager')
employ(microsoft, jane, 'Developer')
employ(intel, jane, 'Manager')
alex_tech_employers = alex.employers.filter(
employment__title__in=('Engineer', 'Developer')).distinct().order_by('name')
self.assertSequenceEqual(alex_tech_employers, [google, oracle])
alex_nontech_employers = alex.employers.exclude(
employment__title__in=('Engineer', 'Developer')).distinct().order_by('name')
self.assertSequenceEqual(alex_nontech_employers, [google, intel, microsoft])
def test_exclude_reverse_fk_field_ref(self):
tag = Tag.objects.create()
Note.objects.create(tag=tag, note='note')
annotation = Annotation.objects.create(name='annotation', tag=tag)
self.assertEqual(Annotation.objects.exclude(tag__note__note=F('name')).get(), annotation)
def test_exclude_with_circular_fk_relation(self):
self.assertEqual(ObjectB.objects.exclude(objecta__objectb__name=F('name')).count(), 0)
def test_subquery_exclude_outerref(self):
qs = JobResponsibilities.objects.filter(
Exists(Responsibility.objects.exclude(jobs=OuterRef('job'))),
)
self.assertTrue(qs.exists())
self.r1.delete()
self.assertFalse(qs.exists())
def test_exclude_nullable_fields(self):
number = Number.objects.create(num=1, other_num=1)
Number.objects.create(num=2, other_num=2, another_num=2)
self.assertSequenceEqual(
Number.objects.exclude(other_num=F('another_num')),
[number],
)
self.assertSequenceEqual(
Number.objects.exclude(num=F('another_num')),
[number],
)
def test_exclude_multivalued_exists(self):
with CaptureQueriesContext(connection) as captured_queries:
self.assertSequenceEqual(
Job.objects.exclude(responsibilities__description='Programming'),
[self.j1],
)
self.assertIn('exists', captured_queries[0]['sql'].lower())
def test_exclude_subquery(self):
subquery = JobResponsibilities.objects.filter(
responsibility__description='bar',
) | JobResponsibilities.objects.exclude(
job__responsibilities__description='foo',
)
self.assertCountEqual(
Job.objects.annotate(
responsibility=subquery.filter(
job=OuterRef('name'),
).values('id')[:1]
),
[self.j1, self.j2],
)
class ExcludeTest17600(TestCase):
"""
Some regressiontests for ticket #17600. Some of these likely duplicate
other existing tests.
"""
@classmethod
def setUpTestData(cls):
# Create a few Orders.
cls.o1 = Order.objects.create(pk=1)
cls.o2 = Order.objects.create(pk=2)
cls.o3 = Order.objects.create(pk=3)
# Create some OrderItems for the first order with homogeneous
# status_id values
cls.oi1 = OrderItem.objects.create(order=cls.o1, status=1)
cls.oi2 = OrderItem.objects.create(order=cls.o1, status=1)
cls.oi3 = OrderItem.objects.create(order=cls.o1, status=1)
# Create some OrderItems for the second order with heterogeneous
# status_id values
cls.oi4 = OrderItem.objects.create(order=cls.o2, status=1)
cls.oi5 = OrderItem.objects.create(order=cls.o2, status=2)
cls.oi6 = OrderItem.objects.create(order=cls.o2, status=3)
# Create some OrderItems for the second order with heterogeneous
# status_id values
cls.oi7 = OrderItem.objects.create(order=cls.o3, status=2)
cls.oi8 = OrderItem.objects.create(order=cls.o3, status=3)
cls.oi9 = OrderItem.objects.create(order=cls.o3, status=4)
def test_exclude_plain(self):
"""
This should exclude Orders which have some items with status 1
"""
self.assertSequenceEqual(
Order.objects.exclude(items__status=1),
[self.o3],
)
def test_exclude_plain_distinct(self):
"""
This should exclude Orders which have some items with status 1
"""
self.assertSequenceEqual(
Order.objects.exclude(items__status=1).distinct(),
[self.o3],
)
def test_exclude_with_q_object_distinct(self):
"""
This should exclude Orders which have some items with status 1
"""
self.assertSequenceEqual(
Order.objects.exclude(Q(items__status=1)).distinct(),
[self.o3],
)
def test_exclude_with_q_object_no_distinct(self):
"""
This should exclude Orders which have some items with status 1
"""
self.assertSequenceEqual(
Order.objects.exclude(Q(items__status=1)),
[self.o3],
)
def test_exclude_with_q_is_equal_to_plain_exclude(self):
"""
Using exclude(condition) and exclude(Q(condition)) should
yield the same QuerySet
"""
self.assertEqual(
list(Order.objects.exclude(items__status=1).distinct()),
list(Order.objects.exclude(Q(items__status=1)).distinct()))
def test_exclude_with_q_is_equal_to_plain_exclude_variation(self):
"""
Using exclude(condition) and exclude(Q(condition)) should
yield the same QuerySet
"""
self.assertEqual(
list(Order.objects.exclude(items__status=1)),
list(Order.objects.exclude(Q(items__status=1)).distinct()))
@unittest.expectedFailure
def test_only_orders_with_all_items_having_status_1(self):
"""
This should only return orders having ALL items set to status 1, or
those items not having any orders at all. The correct way to write
this query in SQL seems to be using two nested subqueries.
"""
self.assertQuerysetEqual(
Order.objects.exclude(~Q(items__status=1)).distinct(),
[self.o1],
)
class Exclude15786(TestCase):
"""Regression test for #15786"""
def test_ticket15786(self):
c1 = SimpleCategory.objects.create(name='c1')
c2 = SimpleCategory.objects.create(name='c2')
OneToOneCategory.objects.create(category=c1)
OneToOneCategory.objects.create(category=c2)
rel = CategoryRelationship.objects.create(first=c1, second=c2)
self.assertEqual(
CategoryRelationship.objects.exclude(
first__onetoonecategory=F('second__onetoonecategory')
).get(), rel
)
class NullInExcludeTest(TestCase):
@classmethod
def setUpTestData(cls):
NullableName.objects.create(name='i1')
NullableName.objects.create()
def test_null_in_exclude_qs(self):
none_val = '' if connection.features.interprets_empty_strings_as_nulls else None
self.assertQuerysetEqual(
NullableName.objects.exclude(name__in=[]),
['i1', none_val], attrgetter('name'))
self.assertQuerysetEqual(
NullableName.objects.exclude(name__in=['i1']),
[none_val], attrgetter('name'))
self.assertQuerysetEqual(
NullableName.objects.exclude(name__in=['i3']),
['i1', none_val], attrgetter('name'))
inner_qs = NullableName.objects.filter(name='i1').values_list('name')
self.assertQuerysetEqual(
NullableName.objects.exclude(name__in=inner_qs),
[none_val], attrgetter('name'))
# The inner queryset wasn't executed - it should be turned
# into subquery above
self.assertIs(inner_qs._result_cache, None)
@unittest.expectedFailure
def test_col_not_in_list_containing_null(self):
"""
The following case is not handled properly because
SQL's COL NOT IN (list containing null) handling is too weird to
abstract away.
"""
self.assertQuerysetEqual(
NullableName.objects.exclude(name__in=[None]),
['i1'], attrgetter('name'))
def test_double_exclude(self):
self.assertEqual(
list(NullableName.objects.filter(~~Q(name='i1'))),
list(NullableName.objects.filter(Q(name='i1'))))
self.assertNotIn(
'IS NOT NULL',
str(NullableName.objects.filter(~~Q(name='i1')).query))
class EmptyStringsAsNullTest(TestCase):
"""
Filtering on non-null character fields works as expected.
The reason for these tests is that Oracle treats '' as NULL, and this
can cause problems in query construction. Refs #17957.
"""
@classmethod
def setUpTestData(cls):
cls.nc = NamedCategory.objects.create(name='')
def test_direct_exclude(self):
self.assertQuerysetEqual(
NamedCategory.objects.exclude(name__in=['nonexistent']),
[self.nc.pk], attrgetter('pk')
)
def test_joined_exclude(self):
self.assertQuerysetEqual(
DumbCategory.objects.exclude(namedcategory__name__in=['nonexistent']),
[self.nc.pk], attrgetter('pk')
)
def test_21001(self):
foo = NamedCategory.objects.create(name='foo')
self.assertQuerysetEqual(
NamedCategory.objects.exclude(name=''),
[foo.pk], attrgetter('pk')
)
class ProxyQueryCleanupTest(TestCase):
def test_evaluated_proxy_count(self):
"""
Generating the query string doesn't alter the query's state
in irreversible ways. Refs #18248.
"""
ProxyCategory.objects.create()
qs = ProxyCategory.objects.all()
self.assertEqual(qs.count(), 1)
str(qs.query)
self.assertEqual(qs.count(), 1)
class WhereNodeTest(SimpleTestCase):
class DummyNode:
def as_sql(self, compiler, connection):
return 'dummy', []
class MockCompiler:
def compile(self, node):
return node.as_sql(self, connection)
def __call__(self, name):
return connection.ops.quote_name(name)
def test_empty_full_handling_conjunction(self):
compiler = WhereNodeTest.MockCompiler()
w = WhereNode(children=[NothingNode()])
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('', []))
w = WhereNode(children=[self.DummyNode(), self.DummyNode()])
self.assertEqual(w.as_sql(compiler, connection), ('(dummy AND dummy)', []))
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('NOT (dummy AND dummy)', []))
w = WhereNode(children=[NothingNode(), self.DummyNode()])
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('', []))
def test_empty_full_handling_disjunction(self):
compiler = WhereNodeTest.MockCompiler()
w = WhereNode(children=[NothingNode()], connector='OR')
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('', []))
w = WhereNode(children=[self.DummyNode(), self.DummyNode()], connector='OR')
self.assertEqual(w.as_sql(compiler, connection), ('(dummy OR dummy)', []))
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('NOT (dummy OR dummy)', []))
w = WhereNode(children=[NothingNode(), self.DummyNode()], connector='OR')
self.assertEqual(w.as_sql(compiler, connection), ('dummy', []))
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('NOT (dummy)', []))
def test_empty_nodes(self):
compiler = WhereNodeTest.MockCompiler()
empty_w = WhereNode()
w = WhereNode(children=[empty_w, empty_w])
self.assertEqual(w.as_sql(compiler, connection), ('', []))
w.negate()
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
w.connector = 'OR'
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
w.negate()
self.assertEqual(w.as_sql(compiler, connection), ('', []))
w = WhereNode(children=[empty_w, NothingNode()], connector='OR')
self.assertEqual(w.as_sql(compiler, connection), ('', []))
w = WhereNode(children=[empty_w, NothingNode()], connector='AND')
with self.assertRaises(EmptyResultSet):
w.as_sql(compiler, connection)
class QuerySetExceptionTests(SimpleTestCase):
def test_iter_exceptions(self):
qs = ExtraInfo.objects.only('author')
msg = "'ManyToOneRel' object has no attribute 'attname'"
with self.assertRaisesMessage(AttributeError, msg):
list(qs)
def test_invalid_order_by(self):
msg = (
"Cannot resolve keyword '*' into field. Choices are: created, id, "
"name"
)
with self.assertRaisesMessage(FieldError, msg):
Article.objects.order_by('*')
def test_invalid_order_by_raw_column_alias(self):
msg = (
"Cannot resolve keyword 'queries_author.name' into field. Choices "
"are: cover, created, creator, creator_id, id, modified, name, "
"note, note_id, tags"
)
with self.assertRaisesMessage(FieldError, msg):
Item.objects.values('creator__name').order_by('queries_author.name')
def test_invalid_queryset_model(self):
msg = 'Cannot use QuerySet for "Article": Use a QuerySet for "ExtraInfo".'
with self.assertRaisesMessage(ValueError, msg):
list(Author.objects.filter(extra=Article.objects.all()))
class NullJoinPromotionOrTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.d1 = ModelD.objects.create(name='foo')
d2 = ModelD.objects.create(name='bar')
cls.a1 = ModelA.objects.create(name='a1', d=cls.d1)
c = ModelC.objects.create(name='c')
b = ModelB.objects.create(name='b', c=c)
cls.a2 = ModelA.objects.create(name='a2', b=b, d=d2)
def test_ticket_17886(self):
# The first Q-object is generating the match, the rest of the filters
# should not remove the match even if they do not match anything. The
# problem here was that b__name generates a LOUTER JOIN, then
# b__c__name generates join to c, which the ORM tried to promote but
# failed as that join isn't nullable.
q_obj = (
Q(d__name='foo') |
Q(b__name='foo') |
Q(b__c__name='foo')
)
qset = ModelA.objects.filter(q_obj)
self.assertEqual(list(qset), [self.a1])
# We generate one INNER JOIN to D. The join is direct and not nullable
# so we can use INNER JOIN for it. However, we can NOT use INNER JOIN
# for the b->c join, as a->b is nullable.
self.assertEqual(str(qset.query).count('INNER JOIN'), 1)
def test_isnull_filter_promotion(self):
qs = ModelA.objects.filter(Q(b__name__isnull=True))
self.assertEqual(str(qs.query).count('LEFT OUTER'), 1)
self.assertEqual(list(qs), [self.a1])
qs = ModelA.objects.filter(~Q(b__name__isnull=True))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(list(qs), [self.a2])
qs = ModelA.objects.filter(~~Q(b__name__isnull=True))
self.assertEqual(str(qs.query).count('LEFT OUTER'), 1)
self.assertEqual(list(qs), [self.a1])
qs = ModelA.objects.filter(Q(b__name__isnull=False))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(list(qs), [self.a2])
qs = ModelA.objects.filter(~Q(b__name__isnull=False))
self.assertEqual(str(qs.query).count('LEFT OUTER'), 1)
self.assertEqual(list(qs), [self.a1])
qs = ModelA.objects.filter(~~Q(b__name__isnull=False))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(list(qs), [self.a2])
def test_null_join_demotion(self):
qs = ModelA.objects.filter(Q(b__name__isnull=False) & Q(b__name__isnull=True))
self.assertIn(' INNER JOIN ', str(qs.query))
qs = ModelA.objects.filter(Q(b__name__isnull=True) & Q(b__name__isnull=False))
self.assertIn(' INNER JOIN ', str(qs.query))
qs = ModelA.objects.filter(Q(b__name__isnull=False) | Q(b__name__isnull=True))
self.assertIn(' LEFT OUTER JOIN ', str(qs.query))
qs = ModelA.objects.filter(Q(b__name__isnull=True) | Q(b__name__isnull=False))
self.assertIn(' LEFT OUTER JOIN ', str(qs.query))
def test_ticket_21366(self):
n = Note.objects.create(note='n', misc='m')
e = ExtraInfo.objects.create(info='info', note=n)
a = Author.objects.create(name='Author1', num=1, extra=e)
Ranking.objects.create(rank=1, author=a)
r1 = Report.objects.create(name='Foo', creator=a)
r2 = Report.objects.create(name='Bar')
Report.objects.create(name='Bar', creator=a)
qs = Report.objects.filter(
Q(creator__ranking__isnull=True) |
Q(creator__ranking__rank=1, name='Foo')
)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
self.assertEqual(str(qs.query).count(' JOIN '), 2)
self.assertSequenceEqual(qs.order_by('name'), [r2, r1])
def test_ticket_21748(self):
i1 = Identifier.objects.create(name='i1')
i2 = Identifier.objects.create(name='i2')
i3 = Identifier.objects.create(name='i3')
Program.objects.create(identifier=i1)
Channel.objects.create(identifier=i1)
Program.objects.create(identifier=i2)
self.assertSequenceEqual(Identifier.objects.filter(program=None, channel=None), [i3])
self.assertSequenceEqual(Identifier.objects.exclude(program=None, channel=None).order_by('name'), [i1, i2])
def test_ticket_21748_double_negated_and(self):
i1 = Identifier.objects.create(name='i1')
i2 = Identifier.objects.create(name='i2')
Identifier.objects.create(name='i3')
p1 = Program.objects.create(identifier=i1)
c1 = Channel.objects.create(identifier=i1)
Program.objects.create(identifier=i2)
# Check the ~~Q() (or equivalently .exclude(~Q)) works like Q() for
# join promotion.
qs1_doubleneg = Identifier.objects.exclude(~Q(program__id=p1.id, channel__id=c1.id)).order_by('pk')
qs1_filter = Identifier.objects.filter(program__id=p1.id, channel__id=c1.id).order_by('pk')
self.assertQuerysetEqual(qs1_doubleneg, qs1_filter, lambda x: x)
self.assertEqual(str(qs1_filter.query).count('JOIN'),
str(qs1_doubleneg.query).count('JOIN'))
self.assertEqual(2, str(qs1_doubleneg.query).count('INNER JOIN'))
self.assertEqual(str(qs1_filter.query).count('INNER JOIN'),
str(qs1_doubleneg.query).count('INNER JOIN'))
def test_ticket_21748_double_negated_or(self):
i1 = Identifier.objects.create(name='i1')
i2 = Identifier.objects.create(name='i2')
Identifier.objects.create(name='i3')
p1 = Program.objects.create(identifier=i1)
c1 = Channel.objects.create(identifier=i1)
p2 = Program.objects.create(identifier=i2)
# Test OR + doubleneg. The expected result is that channel is LOUTER
# joined, program INNER joined
qs1_filter = Identifier.objects.filter(
Q(program__id=p2.id, channel__id=c1.id) | Q(program__id=p1.id)
).order_by('pk')
qs1_doubleneg = Identifier.objects.exclude(
~Q(Q(program__id=p2.id, channel__id=c1.id) | Q(program__id=p1.id))
).order_by('pk')
self.assertQuerysetEqual(qs1_doubleneg, qs1_filter, lambda x: x)
self.assertEqual(str(qs1_filter.query).count('JOIN'),
str(qs1_doubleneg.query).count('JOIN'))
self.assertEqual(1, str(qs1_doubleneg.query).count('INNER JOIN'))
self.assertEqual(str(qs1_filter.query).count('INNER JOIN'),
str(qs1_doubleneg.query).count('INNER JOIN'))
def test_ticket_21748_complex_filter(self):
i1 = Identifier.objects.create(name='i1')
i2 = Identifier.objects.create(name='i2')
Identifier.objects.create(name='i3')
p1 = Program.objects.create(identifier=i1)
c1 = Channel.objects.create(identifier=i1)
p2 = Program.objects.create(identifier=i2)
# Finally, a more complex case, one time in a way where each
# NOT is pushed to lowest level in the boolean tree, and
# another query where this isn't done.
qs1 = Identifier.objects.filter(
~Q(~Q(program__id=p2.id, channel__id=c1.id) & Q(program__id=p1.id))
).order_by('pk')
qs2 = Identifier.objects.filter(
Q(Q(program__id=p2.id, channel__id=c1.id) | ~Q(program__id=p1.id))
).order_by('pk')
self.assertQuerysetEqual(qs1, qs2, lambda x: x)
self.assertEqual(str(qs1.query).count('JOIN'),
str(qs2.query).count('JOIN'))
self.assertEqual(0, str(qs1.query).count('INNER JOIN'))
self.assertEqual(str(qs1.query).count('INNER JOIN'),
str(qs2.query).count('INNER JOIN'))
class ReverseJoinTrimmingTest(TestCase):
def test_reverse_trimming(self):
# We don't accidentally trim reverse joins - we can't know if there is
# anything on the other side of the join, so trimming reverse joins
# can't be done, ever.
t = Tag.objects.create()
qs = Tag.objects.filter(annotation__tag=t.pk)
self.assertIn('INNER JOIN', str(qs.query))
self.assertEqual(list(qs), [])
class JoinReuseTest(TestCase):
"""
The queries reuse joins sensibly (for example, direct joins
are always reused).
"""
def test_fk_reuse(self):
qs = Annotation.objects.filter(tag__name='foo').filter(tag__name='bar')
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_fk_reuse_select_related(self):
qs = Annotation.objects.filter(tag__name='foo').select_related('tag')
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_fk_reuse_annotation(self):
qs = Annotation.objects.filter(tag__name='foo').annotate(cnt=Count('tag__name'))
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_fk_reuse_disjunction(self):
qs = Annotation.objects.filter(Q(tag__name='foo') | Q(tag__name='bar'))
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_fk_reuse_order_by(self):
qs = Annotation.objects.filter(tag__name='foo').order_by('tag__name')
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_revo2o_reuse(self):
qs = Detail.objects.filter(member__name='foo').filter(member__name='foo')
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_revfk_noreuse(self):
qs = Author.objects.filter(report__name='r4').filter(report__name='r1')
self.assertEqual(str(qs.query).count('JOIN'), 2)
def test_inverted_q_across_relations(self):
"""
When a trimmable join is specified in the query (here school__), the
ORM detects it and removes unnecessary joins. The set of reusable joins
are updated after trimming the query so that other lookups don't
consider that the outer query's filters are in effect for the subquery
(#26551).
"""
springfield_elementary = School.objects.create()
hogward = School.objects.create()
Student.objects.create(school=springfield_elementary)
hp = Student.objects.create(school=hogward)
Classroom.objects.create(school=hogward, name='Potion')
Classroom.objects.create(school=springfield_elementary, name='Main')
qs = Student.objects.filter(
~(Q(school__classroom__name='Main') & Q(school__classroom__has_blackboard=None))
)
self.assertSequenceEqual(qs, [hp])
class DisjunctionPromotionTests(TestCase):
def test_disjunction_promotion_select_related(self):
fk1 = FK1.objects.create(f1='f1', f2='f2')
basea = BaseA.objects.create(a=fk1)
qs = BaseA.objects.filter(Q(a=fk1) | Q(b=2))
self.assertEqual(str(qs.query).count(' JOIN '), 0)
qs = qs.select_related('a', 'b')
self.assertEqual(str(qs.query).count(' INNER JOIN '), 0)
self.assertEqual(str(qs.query).count(' LEFT OUTER JOIN '), 2)
with self.assertNumQueries(1):
self.assertSequenceEqual(qs, [basea])
self.assertEqual(qs[0].a, fk1)
self.assertIs(qs[0].b, None)
def test_disjunction_promotion1(self):
# Pre-existing join, add two ORed filters to the same join,
# all joins can be INNER JOINS.
qs = BaseA.objects.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
qs = qs.filter(Q(b__f1='foo') | Q(b__f2='foo'))
self.assertEqual(str(qs.query).count('INNER JOIN'), 2)
# Reverse the order of AND and OR filters.
qs = BaseA.objects.filter(Q(b__f1='foo') | Q(b__f2='foo'))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
qs = qs.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 2)
def test_disjunction_promotion2(self):
qs = BaseA.objects.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
# Now we have two different joins in an ORed condition, these
# must be OUTER joins. The pre-existing join should remain INNER.
qs = qs.filter(Q(b__f1='foo') | Q(c__f2='foo'))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
# Reverse case.
qs = BaseA.objects.filter(Q(b__f1='foo') | Q(c__f2='foo'))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
qs = qs.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
def test_disjunction_promotion3(self):
qs = BaseA.objects.filter(a__f2='bar')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
# The ANDed a__f2 filter allows us to use keep using INNER JOIN
# even inside the ORed case. If the join to a__ returns nothing,
# the ANDed filter for a__f2 can't be true.
qs = qs.filter(Q(a__f1='foo') | Q(b__f2='foo'))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
def test_disjunction_promotion3_demote(self):
# This one needs demotion logic: the first filter causes a to be
# outer joined, the second filter makes it inner join again.
qs = BaseA.objects.filter(
Q(a__f1='foo') | Q(b__f2='foo')).filter(a__f2='bar')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
def test_disjunction_promotion4_demote(self):
qs = BaseA.objects.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('JOIN'), 0)
# Demote needed for the "a" join. It is marked as outer join by
# above filter (even if it is trimmed away).
qs = qs.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
def test_disjunction_promotion4(self):
qs = BaseA.objects.filter(a__f1='foo')
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
qs = qs.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
def test_disjunction_promotion5_demote(self):
qs = BaseA.objects.filter(Q(a=1) | Q(a=2))
# Note that the above filters on a force the join to an
# inner join even if it is trimmed.
self.assertEqual(str(qs.query).count('JOIN'), 0)
qs = qs.filter(Q(a__f1='foo') | Q(b__f1='foo'))
# So, now the a__f1 join doesn't need promotion.
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
# But b__f1 does.
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
qs = BaseA.objects.filter(Q(a__f1='foo') | Q(b__f1='foo'))
# Now the join to a is created as LOUTER
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
qs = qs.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
def test_disjunction_promotion6(self):
qs = BaseA.objects.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('JOIN'), 0)
qs = BaseA.objects.filter(Q(a__f1='foo') & Q(b__f1='foo'))
self.assertEqual(str(qs.query).count('INNER JOIN'), 2)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 0)
qs = BaseA.objects.filter(Q(a__f1='foo') & Q(b__f1='foo'))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 0)
self.assertEqual(str(qs.query).count('INNER JOIN'), 2)
qs = qs.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('INNER JOIN'), 2)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 0)
def test_disjunction_promotion7(self):
qs = BaseA.objects.filter(Q(a=1) | Q(a=2))
self.assertEqual(str(qs.query).count('JOIN'), 0)
qs = BaseA.objects.filter(Q(a__f1='foo') | (Q(b__f1='foo') & Q(a__f1='bar')))
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
qs = BaseA.objects.filter(
(Q(a__f1='foo') | Q(b__f1='foo')) & (Q(a__f1='bar') | Q(c__f1='foo'))
)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 3)
self.assertEqual(str(qs.query).count('INNER JOIN'), 0)
qs = BaseA.objects.filter(
Q(a__f1='foo') | Q(a__f1='bar') & (Q(b__f1='bar') | Q(c__f1='foo'))
)
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
def test_disjunction_promotion_fexpression(self):
qs = BaseA.objects.filter(Q(a__f1=F('b__f1')) | Q(b__f1='foo'))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 1)
self.assertEqual(str(qs.query).count('INNER JOIN'), 1)
qs = BaseA.objects.filter(Q(a__f1=F('c__f1')) | Q(b__f1='foo'))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 3)
qs = BaseA.objects.filter(Q(a__f1=F('b__f1')) | Q(a__f2=F('b__f2')) | Q(c__f1='foo'))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 3)
qs = BaseA.objects.filter(Q(a__f1=F('c__f1')) | (Q(pk=1) & Q(pk=2)))
self.assertEqual(str(qs.query).count('LEFT OUTER JOIN'), 2)
self.assertEqual(str(qs.query).count('INNER JOIN'), 0)
class ManyToManyExcludeTest(TestCase):
def test_exclude_many_to_many(self):
i_extra = Identifier.objects.create(name='extra')
i_program = Identifier.objects.create(name='program')
program = Program.objects.create(identifier=i_program)
i_channel = Identifier.objects.create(name='channel')
channel = Channel.objects.create(identifier=i_channel)
channel.programs.add(program)
# channel contains 'program1', so all Identifiers except that one
# should be returned
self.assertSequenceEqual(
Identifier.objects.exclude(program__channel=channel).order_by('name'),
[i_channel, i_extra],
)
self.assertSequenceEqual(
Identifier.objects.exclude(program__channel=None).order_by('name'),
[i_program],
)
def test_ticket_12823(self):
pg3 = Page.objects.create(text='pg3')
pg2 = Page.objects.create(text='pg2')
pg1 = Page.objects.create(text='pg1')
pa1 = Paragraph.objects.create(text='pa1')
pa1.page.set([pg1, pg2])
pa2 = Paragraph.objects.create(text='pa2')
pa2.page.set([pg2, pg3])
pa3 = Paragraph.objects.create(text='pa3')
ch1 = Chapter.objects.create(title='ch1', paragraph=pa1)
ch2 = Chapter.objects.create(title='ch2', paragraph=pa2)
ch3 = Chapter.objects.create(title='ch3', paragraph=pa3)
b1 = Book.objects.create(title='b1', chapter=ch1)
b2 = Book.objects.create(title='b2', chapter=ch2)
b3 = Book.objects.create(title='b3', chapter=ch3)
q = Book.objects.exclude(chapter__paragraph__page__text='pg1')
self.assertNotIn('IS NOT NULL', str(q.query))
self.assertEqual(len(q), 2)
self.assertNotIn(b1, q)
self.assertIn(b2, q)
self.assertIn(b3, q)
class RelabelCloneTest(TestCase):
def test_ticket_19964(self):
my1 = MyObject.objects.create(data='foo')
my1.parent = my1
my1.save()
my2 = MyObject.objects.create(data='bar', parent=my1)
parents = MyObject.objects.filter(parent=F('id'))
children = MyObject.objects.filter(parent__in=parents).exclude(parent=F('id'))
self.assertEqual(list(parents), [my1])
# Evaluating the children query (which has parents as part of it) does
# not change results for the parents query.
self.assertEqual(list(children), [my2])
self.assertEqual(list(parents), [my1])
class Ticket20101Tests(TestCase):
def test_ticket_20101(self):
"""
Tests QuerySet ORed combining in exclude subquery case.
"""
t = Tag.objects.create(name='foo')
a1 = Annotation.objects.create(tag=t, name='a1')
a2 = Annotation.objects.create(tag=t, name='a2')
a3 = Annotation.objects.create(tag=t, name='a3')
n = Note.objects.create(note='foo', misc='bar')
qs1 = Note.objects.exclude(annotation__in=[a1, a2])
qs2 = Note.objects.filter(annotation__in=[a3])
self.assertIn(n, qs1)
self.assertNotIn(n, qs2)
self.assertIn(n, (qs1 | qs2))
class EmptyStringPromotionTests(SimpleTestCase):
def test_empty_string_promotion(self):
qs = RelatedObject.objects.filter(single__name='')
if connection.features.interprets_empty_strings_as_nulls:
self.assertIn('LEFT OUTER JOIN', str(qs.query))
else:
self.assertNotIn('LEFT OUTER JOIN', str(qs.query))
class ValuesSubqueryTests(TestCase):
def test_values_in_subquery(self):
# If a values() queryset is used, then the given values
# will be used instead of forcing use of the relation's field.
o1 = Order.objects.create(id=-2)
o2 = Order.objects.create(id=-1)
oi1 = OrderItem.objects.create(order=o1, status=0)
oi1.status = oi1.pk
oi1.save()
OrderItem.objects.create(order=o2, status=0)
# The query below should match o1 as it has related order_item
# with id == status.
self.assertSequenceEqual(Order.objects.filter(items__in=OrderItem.objects.values_list('status')), [o1])
class DoubleInSubqueryTests(TestCase):
def test_double_subquery_in(self):
lfa1 = LeafA.objects.create(data='foo')
lfa2 = LeafA.objects.create(data='bar')
lfb1 = LeafB.objects.create(data='lfb1')
lfb2 = LeafB.objects.create(data='lfb2')
Join.objects.create(a=lfa1, b=lfb1)
Join.objects.create(a=lfa2, b=lfb2)
leaf_as = LeafA.objects.filter(data='foo').values_list('pk', flat=True)
joins = Join.objects.filter(a__in=leaf_as).values_list('b__id', flat=True)
qs = LeafB.objects.filter(pk__in=joins)
self.assertSequenceEqual(qs, [lfb1])
class Ticket18785Tests(SimpleTestCase):
def test_ticket_18785(self):
# Test join trimming from ticket18785
qs = Item.objects.exclude(
note__isnull=False
).filter(
name='something', creator__extra__isnull=True
).order_by()
self.assertEqual(1, str(qs.query).count('INNER JOIN'))
self.assertEqual(0, str(qs.query).count('OUTER JOIN'))
class Ticket20788Tests(TestCase):
def test_ticket_20788(self):
Paragraph.objects.create()
paragraph = Paragraph.objects.create()
page = paragraph.page.create()
chapter = Chapter.objects.create(paragraph=paragraph)
Book.objects.create(chapter=chapter)
paragraph2 = Paragraph.objects.create()
Page.objects.create()
chapter2 = Chapter.objects.create(paragraph=paragraph2)
book2 = Book.objects.create(chapter=chapter2)
sentences_not_in_pub = Book.objects.exclude(chapter__paragraph__page=page)
self.assertSequenceEqual(sentences_not_in_pub, [book2])
class Ticket12807Tests(TestCase):
def test_ticket_12807(self):
p1 = Paragraph.objects.create()
p2 = Paragraph.objects.create()
# The ORed condition below should have no effect on the query - the
# ~Q(pk__in=[]) will always be True.
qs = Paragraph.objects.filter((Q(pk=p2.pk) | ~Q(pk__in=[])) & Q(pk=p1.pk))
self.assertSequenceEqual(qs, [p1])
class RelatedLookupTypeTests(TestCase):
error = 'Cannot query "%s": Must be "%s" instance.'
@classmethod
def setUpTestData(cls):
cls.oa = ObjectA.objects.create(name="oa")
cls.poa = ProxyObjectA.objects.get(name="oa")
cls.coa = ChildObjectA.objects.create(name="coa")
cls.wrong_type = Order.objects.create(id=cls.oa.pk)
cls.ob = ObjectB.objects.create(name="ob", objecta=cls.oa, num=1)
cls.pob1 = ProxyObjectB.objects.create(name="pob", objecta=cls.oa, num=2)
cls.pob = ProxyObjectB.objects.all()
cls.c = ObjectC.objects.create(childobjecta=cls.coa)
def test_wrong_type_lookup(self):
"""
A ValueError is raised when the incorrect object type is passed to a
query lookup.
"""
# Passing incorrect object type
with self.assertRaisesMessage(ValueError, self.error % (self.wrong_type, ObjectA._meta.object_name)):
ObjectB.objects.get(objecta=self.wrong_type)
with self.assertRaisesMessage(ValueError, self.error % (self.wrong_type, ObjectA._meta.object_name)):
ObjectB.objects.filter(objecta__in=[self.wrong_type])
with self.assertRaisesMessage(ValueError, self.error % (self.wrong_type, ObjectA._meta.object_name)):
ObjectB.objects.filter(objecta=self.wrong_type)
with self.assertRaisesMessage(ValueError, self.error % (self.wrong_type, ObjectB._meta.object_name)):
ObjectA.objects.filter(objectb__in=[self.wrong_type, self.ob])
# Passing an object of the class on which query is done.
with self.assertRaisesMessage(ValueError, self.error % (self.ob, ObjectA._meta.object_name)):
ObjectB.objects.filter(objecta__in=[self.poa, self.ob])
with self.assertRaisesMessage(ValueError, self.error % (self.ob, ChildObjectA._meta.object_name)):
ObjectC.objects.exclude(childobjecta__in=[self.coa, self.ob])
def test_wrong_backward_lookup(self):
"""
A ValueError is raised when the incorrect object type is passed to a
query lookup for backward relations.
"""
with self.assertRaisesMessage(ValueError, self.error % (self.oa, ObjectB._meta.object_name)):
ObjectA.objects.filter(objectb__in=[self.oa, self.ob])
with self.assertRaisesMessage(ValueError, self.error % (self.oa, ObjectB._meta.object_name)):
ObjectA.objects.exclude(objectb=self.oa)
with self.assertRaisesMessage(ValueError, self.error % (self.wrong_type, ObjectB._meta.object_name)):
ObjectA.objects.get(objectb=self.wrong_type)
def test_correct_lookup(self):
"""
When passing proxy model objects, child objects, or parent objects,
lookups work fine.
"""
out_a = [self.oa]
out_b = [self.ob, self.pob1]
out_c = [self.c]
# proxy model objects
self.assertSequenceEqual(ObjectB.objects.filter(objecta=self.poa).order_by('name'), out_b)
self.assertSequenceEqual(ObjectA.objects.filter(objectb__in=self.pob).order_by('pk'), out_a * 2)
# child objects
self.assertSequenceEqual(ObjectB.objects.filter(objecta__in=[self.coa]), [])
self.assertSequenceEqual(ObjectB.objects.filter(objecta__in=[self.poa, self.coa]).order_by('name'), out_b)
self.assertSequenceEqual(
ObjectB.objects.filter(objecta__in=iter([self.poa, self.coa])).order_by('name'),
out_b
)
# parent objects
self.assertSequenceEqual(ObjectC.objects.exclude(childobjecta=self.oa), out_c)
# QuerySet related object type checking shouldn't issue queries
# (the querysets aren't evaluated here, hence zero queries) (#23266).
with self.assertNumQueries(0):
ObjectB.objects.filter(objecta__in=ObjectA.objects.all())
def test_values_queryset_lookup(self):
"""
#23396 - Ensure ValueQuerySets are not checked for compatibility with the lookup field
"""
# Make sure the num and objecta field values match.
ob = ObjectB.objects.get(name='ob')
ob.num = ob.objecta.pk
ob.save()
pob = ObjectB.objects.get(name='pob')
pob.num = pob.objecta.pk
pob.save()
self.assertSequenceEqual(ObjectB.objects.filter(
objecta__in=ObjectB.objects.all().values_list('num')
).order_by('pk'), [ob, pob])
class Ticket14056Tests(TestCase):
def test_ticket_14056(self):
s1 = SharedConnection.objects.create(data='s1')
s2 = SharedConnection.objects.create(data='s2')
s3 = SharedConnection.objects.create(data='s3')
PointerA.objects.create(connection=s2)
expected_ordering = (
[s1, s3, s2] if connection.features.nulls_order_largest
else [s2, s1, s3]
)
self.assertSequenceEqual(SharedConnection.objects.order_by('-pointera__connection', 'pk'), expected_ordering)
class Ticket20955Tests(TestCase):
def test_ticket_20955(self):
jack = Staff.objects.create(name='jackstaff')
jackstaff = StaffUser.objects.create(staff=jack)
jill = Staff.objects.create(name='jillstaff')
jillstaff = StaffUser.objects.create(staff=jill)
task = Task.objects.create(creator=jackstaff, owner=jillstaff, title="task")
task_get = Task.objects.get(pk=task.pk)
# Load data so that assertNumQueries doesn't complain about the get
# version's queries.
task_get.creator.staffuser.staff
task_get.owner.staffuser.staff
qs = Task.objects.select_related(
'creator__staffuser__staff', 'owner__staffuser__staff')
self.assertEqual(str(qs.query).count(' JOIN '), 6)
task_select_related = qs.get(pk=task.pk)
with self.assertNumQueries(0):
self.assertEqual(task_select_related.creator.staffuser.staff,
task_get.creator.staffuser.staff)
self.assertEqual(task_select_related.owner.staffuser.staff,
task_get.owner.staffuser.staff)
class Ticket21203Tests(TestCase):
def test_ticket_21203(self):
p = Ticket21203Parent.objects.create(parent_bool=True)
c = Ticket21203Child.objects.create(parent=p)
qs = Ticket21203Child.objects.select_related('parent').defer('parent__created')
self.assertSequenceEqual(qs, [c])
self.assertIs(qs[0].parent.parent_bool, True)
class ValuesJoinPromotionTests(TestCase):
def test_values_no_promotion_for_existing(self):
qs = Node.objects.filter(parent__parent__isnull=False)
self.assertIn(' INNER JOIN ', str(qs.query))
qs = qs.values('parent__parent__id')
self.assertIn(' INNER JOIN ', str(qs.query))
# Make sure there is a left outer join without the filter.
qs = Node.objects.values('parent__parent__id')
self.assertIn(' LEFT OUTER JOIN ', str(qs.query))
def test_non_nullable_fk_not_promoted(self):
qs = ObjectB.objects.values('objecta__name')
self.assertIn(' INNER JOIN ', str(qs.query))
def test_ticket_21376(self):
a = ObjectA.objects.create()
ObjectC.objects.create(objecta=a)
qs = ObjectC.objects.filter(
Q(objecta=a) | Q(objectb__objecta=a),
)
qs = qs.filter(
Q(objectb=1) | Q(objecta=a),
)
self.assertEqual(qs.count(), 1)
tblname = connection.ops.quote_name(ObjectB._meta.db_table)
self.assertIn(' LEFT OUTER JOIN %s' % tblname, str(qs.query))
class ForeignKeyToBaseExcludeTests(TestCase):
def test_ticket_21787(self):
sc1 = SpecialCategory.objects.create(special_name='sc1', name='sc1')
sc2 = SpecialCategory.objects.create(special_name='sc2', name='sc2')
sc3 = SpecialCategory.objects.create(special_name='sc3', name='sc3')
c1 = CategoryItem.objects.create(category=sc1)
CategoryItem.objects.create(category=sc2)
self.assertSequenceEqual(SpecialCategory.objects.exclude(categoryitem__id=c1.pk).order_by('name'), [sc2, sc3])
self.assertSequenceEqual(SpecialCategory.objects.filter(categoryitem__id=c1.pk), [sc1])
class ReverseM2MCustomPkTests(TestCase):
def test_ticket_21879(self):
cpt1 = CustomPkTag.objects.create(id='cpt1', tag='cpt1')
cp1 = CustomPk.objects.create(name='cp1', extra='extra')
cp1.custompktag_set.add(cpt1)
self.assertSequenceEqual(CustomPk.objects.filter(custompktag=cpt1), [cp1])
self.assertSequenceEqual(CustomPkTag.objects.filter(custom_pk=cp1), [cpt1])
class Ticket22429Tests(TestCase):
def test_ticket_22429(self):
sc1 = School.objects.create()
st1 = Student.objects.create(school=sc1)
sc2 = School.objects.create()
st2 = Student.objects.create(school=sc2)
cr = Classroom.objects.create(school=sc1)
cr.students.add(st1)
queryset = Student.objects.filter(~Q(classroom__school=F('school')))
self.assertSequenceEqual(queryset, [st2])
class Ticket23605Tests(TestCase):
def test_ticket_23605(self):
# Test filtering on a complicated q-object from ticket's report.
# The query structure is such that we have multiple nested subqueries.
# The original problem was that the inner queries weren't relabeled
# correctly.
# See also #24090.
a1 = Ticket23605A.objects.create()
a2 = Ticket23605A.objects.create()
c1 = Ticket23605C.objects.create(field_c0=10000.0)
Ticket23605B.objects.create(
field_b0=10000.0, field_b1=True,
modelc_fk=c1, modela_fk=a1)
complex_q = Q(pk__in=Ticket23605A.objects.filter(
Q(
# True for a1 as field_b0 = 10000, field_c0=10000
# False for a2 as no ticket23605b found
ticket23605b__field_b0__gte=1000000 /
F("ticket23605b__modelc_fk__field_c0")
) &
# True for a1 (field_b1=True)
Q(ticket23605b__field_b1=True) & ~Q(ticket23605b__pk__in=Ticket23605B.objects.filter(
~(
# Same filters as above commented filters, but
# double-negated (one for Q() above, one for
# parentheses). So, again a1 match, a2 not.
Q(field_b1=True) &
Q(field_b0__gte=1000000 / F("modelc_fk__field_c0"))
)
))).filter(ticket23605b__field_b1=True))
qs1 = Ticket23605A.objects.filter(complex_q)
self.assertSequenceEqual(qs1, [a1])
qs2 = Ticket23605A.objects.exclude(complex_q)
self.assertSequenceEqual(qs2, [a2])
class TestTicket24279(TestCase):
def test_ticket_24278(self):
School.objects.create()
qs = School.objects.filter(Q(pk__in=()) | Q())
self.assertQuerysetEqual(qs, [])
class TestInvalidValuesRelation(SimpleTestCase):
def test_invalid_values(self):
msg = "Field 'id' expected a number but got 'abc'."
with self.assertRaisesMessage(ValueError, msg):
Annotation.objects.filter(tag='abc')
with self.assertRaisesMessage(ValueError, msg):
Annotation.objects.filter(tag__in=[123, 'abc'])
class TestTicket24605(TestCase):
def test_ticket_24605(self):
"""
Subquery table names should be quoted.
"""
i1 = Individual.objects.create(alive=True)
RelatedIndividual.objects.create(related=i1)
i2 = Individual.objects.create(alive=False)
RelatedIndividual.objects.create(related=i2)
i3 = Individual.objects.create(alive=True)
i4 = Individual.objects.create(alive=False)
self.assertSequenceEqual(Individual.objects.filter(Q(alive=False), Q(related_individual__isnull=True)), [i4])
self.assertSequenceEqual(
Individual.objects.exclude(Q(alive=False), Q(related_individual__isnull=True)).order_by('pk'),
[i1, i2, i3]
)
class Ticket23622Tests(TestCase):
@skipUnlessDBFeature('can_distinct_on_fields')
def test_ticket_23622(self):
"""
Make sure __pk__in and __in work the same for related fields when
using a distinct on subquery.
"""
a1 = Ticket23605A.objects.create()
a2 = Ticket23605A.objects.create()
c1 = Ticket23605C.objects.create(field_c0=0.0)
Ticket23605B.objects.create(
modela_fk=a1, field_b0=123,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a1, field_b0=23,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a1, field_b0=234,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a1, field_b0=12,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a2, field_b0=567,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a2, field_b0=76,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a2, field_b0=7,
field_b1=True,
modelc_fk=c1,
)
Ticket23605B.objects.create(
modela_fk=a2, field_b0=56,
field_b1=True,
modelc_fk=c1,
)
qx = (
Q(ticket23605b__pk__in=Ticket23605B.objects.order_by('modela_fk', '-field_b1').distinct('modela_fk')) &
Q(ticket23605b__field_b0__gte=300)
)
qy = (
Q(ticket23605b__in=Ticket23605B.objects.order_by('modela_fk', '-field_b1').distinct('modela_fk')) &
Q(ticket23605b__field_b0__gte=300)
)
self.assertEqual(
set(Ticket23605A.objects.filter(qx).values_list('pk', flat=True)),
set(Ticket23605A.objects.filter(qy).values_list('pk', flat=True))
)
self.assertSequenceEqual(Ticket23605A.objects.filter(qx), [a2])
|
a88607d31bec38b5b5342683ba3cde931cccaeae399c905d34c520a7e3aed223 | import asyncio
import difflib
import json
import logging
import posixpath
import sys
import threading
import unittest
from collections import Counter
from contextlib import contextmanager
from copy import copy, deepcopy
from difflib import get_close_matches
from functools import wraps
from unittest.suite import _DebugResult
from unittest.util import safe_repr
from urllib.parse import (
parse_qsl, unquote, urlencode, urljoin, urlparse, urlsplit, urlunparse,
)
from urllib.request import url2pathname
from asgiref.sync import async_to_sync
from django.apps import apps
from django.conf import settings
from django.core import mail
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.core.files import locks
from django.core.handlers.wsgi import WSGIHandler, get_path_info
from django.core.management import call_command
from django.core.management.color import no_style
from django.core.management.sql import emit_post_migrate_signal
from django.core.servers.basehttp import ThreadedWSGIServer, WSGIRequestHandler
from django.db import DEFAULT_DB_ALIAS, connection, connections, transaction
from django.forms.fields import CharField
from django.http import QueryDict
from django.http.request import split_domain_port, validate_host
from django.test.client import AsyncClient, Client
from django.test.html import HTMLParseError, parse_html
from django.test.signals import setting_changed, template_rendered
from django.test.utils import (
CaptureQueriesContext, ContextList, compare_xml, modify_settings,
override_settings,
)
from django.utils.functional import classproperty
from django.utils.version import PY310
from django.views.static import serve
__all__ = ('TestCase', 'TransactionTestCase',
'SimpleTestCase', 'skipIfDBFeature', 'skipUnlessDBFeature')
def to_list(value):
"""
Put value into a list if it's not already one. Return an empty list if
value is None.
"""
if value is None:
value = []
elif not isinstance(value, list):
value = [value]
return value
def assert_and_parse_html(self, html, user_msg, msg):
try:
dom = parse_html(html)
except HTMLParseError as e:
standardMsg = '%s\n%s' % (msg, e)
self.fail(self._formatMessage(user_msg, standardMsg))
return dom
class _AssertNumQueriesContext(CaptureQueriesContext):
def __init__(self, test_case, num, connection):
self.test_case = test_case
self.num = num
super().__init__(connection)
def __exit__(self, exc_type, exc_value, traceback):
super().__exit__(exc_type, exc_value, traceback)
if exc_type is not None:
return
executed = len(self)
self.test_case.assertEqual(
executed, self.num,
"%d queries executed, %d expected\nCaptured queries were:\n%s" % (
executed, self.num,
'\n'.join(
'%d. %s' % (i, query['sql']) for i, query in enumerate(self.captured_queries, start=1)
)
)
)
class _AssertTemplateUsedContext:
def __init__(self, test_case, template_name):
self.test_case = test_case
self.template_name = template_name
self.rendered_templates = []
self.rendered_template_names = []
self.context = ContextList()
def on_template_render(self, sender, signal, template, context, **kwargs):
self.rendered_templates.append(template)
self.rendered_template_names.append(template.name)
self.context.append(copy(context))
def test(self):
return self.template_name in self.rendered_template_names
def message(self):
return '%s was not rendered.' % self.template_name
def __enter__(self):
template_rendered.connect(self.on_template_render)
return self
def __exit__(self, exc_type, exc_value, traceback):
template_rendered.disconnect(self.on_template_render)
if exc_type is not None:
return
if not self.test():
message = self.message()
if self.rendered_templates:
message += ' Following templates were rendered: %s' % (
', '.join(self.rendered_template_names)
)
else:
message += ' No template was rendered.'
self.test_case.fail(message)
class _AssertTemplateNotUsedContext(_AssertTemplateUsedContext):
def test(self):
return self.template_name not in self.rendered_template_names
def message(self):
return '%s was rendered.' % self.template_name
class _DatabaseFailure:
def __init__(self, wrapped, message):
self.wrapped = wrapped
self.message = message
def __call__(self):
raise AssertionError(self.message)
class SimpleTestCase(unittest.TestCase):
# The class we'll use for the test client self.client.
# Can be overridden in derived classes.
client_class = Client
async_client_class = AsyncClient
_overridden_settings = None
_modified_settings = None
databases = set()
_disallowed_database_msg = (
'Database %(operation)s to %(alias)r are not allowed in SimpleTestCase '
'subclasses. Either subclass TestCase or TransactionTestCase to ensure '
'proper test isolation or add %(alias)r to %(test)s.databases to silence '
'this failure.'
)
_disallowed_connection_methods = [
('connect', 'connections'),
('temporary_connection', 'connections'),
('cursor', 'queries'),
('chunked_cursor', 'queries'),
]
@classmethod
def setUpClass(cls):
super().setUpClass()
if cls._overridden_settings:
cls._cls_overridden_context = override_settings(**cls._overridden_settings)
cls._cls_overridden_context.enable()
cls.addClassCleanup(cls._cls_overridden_context.disable)
if cls._modified_settings:
cls._cls_modified_context = modify_settings(cls._modified_settings)
cls._cls_modified_context.enable()
cls.addClassCleanup(cls._cls_modified_context.disable)
cls._add_databases_failures()
cls.addClassCleanup(cls._remove_databases_failures)
@classmethod
def _validate_databases(cls):
if cls.databases == '__all__':
return frozenset(connections)
for alias in cls.databases:
if alias not in connections:
message = '%s.%s.databases refers to %r which is not defined in settings.DATABASES.' % (
cls.__module__,
cls.__qualname__,
alias,
)
close_matches = get_close_matches(alias, list(connections))
if close_matches:
message += ' Did you mean %r?' % close_matches[0]
raise ImproperlyConfigured(message)
return frozenset(cls.databases)
@classmethod
def _add_databases_failures(cls):
cls.databases = cls._validate_databases()
for alias in connections:
if alias in cls.databases:
continue
connection = connections[alias]
for name, operation in cls._disallowed_connection_methods:
message = cls._disallowed_database_msg % {
'test': '%s.%s' % (cls.__module__, cls.__qualname__),
'alias': alias,
'operation': operation,
}
method = getattr(connection, name)
setattr(connection, name, _DatabaseFailure(method, message))
@classmethod
def _remove_databases_failures(cls):
for alias in connections:
if alias in cls.databases:
continue
connection = connections[alias]
for name, _ in cls._disallowed_connection_methods:
method = getattr(connection, name)
setattr(connection, name, method.wrapped)
def __call__(self, result=None):
"""
Wrapper around default __call__ method to perform common Django test
set up. This means that user-defined Test Cases aren't required to
include a call to super().setUp().
"""
self._setup_and_call(result)
def debug(self):
"""Perform the same as __call__(), without catching the exception."""
debug_result = _DebugResult()
self._setup_and_call(debug_result, debug=True)
def _setup_and_call(self, result, debug=False):
"""
Perform the following in order: pre-setup, run test, post-teardown,
skipping pre/post hooks if test is set to be skipped.
If debug=True, reraise any errors in setup and use super().debug()
instead of __call__() to run the test.
"""
testMethod = getattr(self, self._testMethodName)
skipped = (
getattr(self.__class__, "__unittest_skip__", False) or
getattr(testMethod, "__unittest_skip__", False)
)
# Convert async test methods.
if asyncio.iscoroutinefunction(testMethod):
setattr(self, self._testMethodName, async_to_sync(testMethod))
if not skipped:
try:
self._pre_setup()
except Exception:
if debug:
raise
result.addError(self, sys.exc_info())
return
if debug:
super().debug()
else:
super().__call__(result)
if not skipped:
try:
self._post_teardown()
except Exception:
if debug:
raise
result.addError(self, sys.exc_info())
return
def _pre_setup(self):
"""
Perform pre-test setup:
* Create a test client.
* Clear the mail test outbox.
"""
self.client = self.client_class()
self.async_client = self.async_client_class()
mail.outbox = []
def _post_teardown(self):
"""Perform post-test things."""
pass
def settings(self, **kwargs):
"""
A context manager that temporarily sets a setting and reverts to the
original value when exiting the context.
"""
return override_settings(**kwargs)
def modify_settings(self, **kwargs):
"""
A context manager that temporarily applies changes a list setting and
reverts back to the original value when exiting the context.
"""
return modify_settings(**kwargs)
def assertRedirects(self, response, expected_url, status_code=302,
target_status_code=200, msg_prefix='',
fetch_redirect_response=True):
"""
Assert that a response redirected to a specific URL and that the
redirect URL can be loaded.
Won't work for external links since it uses the test client to do a
request (use fetch_redirect_response=False to check such links without
fetching them).
"""
if msg_prefix:
msg_prefix += ": "
if hasattr(response, 'redirect_chain'):
# The request was a followed redirect
self.assertTrue(
response.redirect_chain,
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
% (response.status_code, status_code)
)
self.assertEqual(
response.redirect_chain[0][1], status_code,
msg_prefix + "Initial response didn't redirect as expected: Response code was %d (expected %d)"
% (response.redirect_chain[0][1], status_code)
)
url, status_code = response.redirect_chain[-1]
self.assertEqual(
response.status_code, target_status_code,
msg_prefix + "Response didn't redirect as expected: Final Response code was %d (expected %d)"
% (response.status_code, target_status_code)
)
else:
# Not a followed redirect
self.assertEqual(
response.status_code, status_code,
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
% (response.status_code, status_code)
)
url = response.url
scheme, netloc, path, query, fragment = urlsplit(url)
# Prepend the request path to handle relative path redirects.
if not path.startswith('/'):
url = urljoin(response.request['PATH_INFO'], url)
path = urljoin(response.request['PATH_INFO'], path)
if fetch_redirect_response:
# netloc might be empty, or in cases where Django tests the
# HTTP scheme, the convention is for netloc to be 'testserver'.
# Trust both as "internal" URLs here.
domain, port = split_domain_port(netloc)
if domain and not validate_host(domain, settings.ALLOWED_HOSTS):
raise ValueError(
"The test client is unable to fetch remote URLs (got %s). "
"If the host is served by Django, add '%s' to ALLOWED_HOSTS. "
"Otherwise, use assertRedirects(..., fetch_redirect_response=False)."
% (url, domain)
)
# Get the redirection page, using the same client that was used
# to obtain the original response.
extra = response.client.extra or {}
redirect_response = response.client.get(
path,
QueryDict(query),
secure=(scheme == 'https'),
**extra,
)
self.assertEqual(
redirect_response.status_code, target_status_code,
msg_prefix + "Couldn't retrieve redirection page '%s': response code was %d (expected %d)"
% (path, redirect_response.status_code, target_status_code)
)
self.assertURLEqual(
url, expected_url,
msg_prefix + "Response redirected to '%s', expected '%s'" % (url, expected_url)
)
def assertURLEqual(self, url1, url2, msg_prefix=''):
"""
Assert that two URLs are the same, ignoring the order of query string
parameters except for parameters with the same name.
For example, /path/?x=1&y=2 is equal to /path/?y=2&x=1, but
/path/?a=1&a=2 isn't equal to /path/?a=2&a=1.
"""
def normalize(url):
"""Sort the URL's query string parameters."""
url = str(url) # Coerce reverse_lazy() URLs.
scheme, netloc, path, params, query, fragment = urlparse(url)
query_parts = sorted(parse_qsl(query))
return urlunparse((scheme, netloc, path, params, urlencode(query_parts), fragment))
self.assertEqual(
normalize(url1), normalize(url2),
msg_prefix + "Expected '%s' to equal '%s'." % (url1, url2)
)
def _assert_contains(self, response, text, status_code, msg_prefix, html):
# If the response supports deferred rendering and hasn't been rendered
# yet, then ensure that it does get rendered before proceeding further.
if hasattr(response, 'render') and callable(response.render) and not response.is_rendered:
response.render()
if msg_prefix:
msg_prefix += ": "
self.assertEqual(
response.status_code, status_code,
msg_prefix + "Couldn't retrieve content: Response code was %d"
" (expected %d)" % (response.status_code, status_code)
)
if response.streaming:
content = b''.join(response.streaming_content)
else:
content = response.content
if not isinstance(text, bytes) or html:
text = str(text)
content = content.decode(response.charset)
text_repr = "'%s'" % text
else:
text_repr = repr(text)
if html:
content = assert_and_parse_html(self, content, None, "Response's content is not valid HTML:")
text = assert_and_parse_html(self, text, None, "Second argument is not valid HTML:")
real_count = content.count(text)
return (text_repr, real_count, msg_prefix)
def assertContains(self, response, text, count=None, status_code=200, msg_prefix='', html=False):
"""
Assert that a response indicates that some content was retrieved
successfully, (i.e., the HTTP status code was as expected) and that
``text`` occurs ``count`` times in the content of the response.
If ``count`` is None, the count doesn't matter - the assertion is true
if the text occurs at least once in the response.
"""
text_repr, real_count, msg_prefix = self._assert_contains(
response, text, status_code, msg_prefix, html)
if count is not None:
self.assertEqual(
real_count, count,
msg_prefix + "Found %d instances of %s in response (expected %d)" % (real_count, text_repr, count)
)
else:
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find %s in response" % text_repr)
def assertNotContains(self, response, text, status_code=200, msg_prefix='', html=False):
"""
Assert that a response indicates that some content was retrieved
successfully, (i.e., the HTTP status code was as expected) and that
``text`` doesn't occur in the content of the response.
"""
text_repr, real_count, msg_prefix = self._assert_contains(
response, text, status_code, msg_prefix, html)
self.assertEqual(real_count, 0, msg_prefix + "Response should not contain %s" % text_repr)
def assertFormError(self, response, form, field, errors, msg_prefix=''):
"""
Assert that a form used to render the response has a specific field
error.
"""
if msg_prefix:
msg_prefix += ": "
# Put context(s) into a list to simplify processing.
contexts = to_list(response.context)
if not contexts:
self.fail(msg_prefix + "Response did not use any contexts to render the response")
# Put error(s) into a list to simplify processing.
errors = to_list(errors)
# Search all contexts for the error.
found_form = False
for i, context in enumerate(contexts):
if form not in context:
continue
found_form = True
for err in errors:
if field:
if field in context[form].errors:
field_errors = context[form].errors[field]
self.assertTrue(
err in field_errors,
msg_prefix + "The field '%s' on form '%s' in"
" context %d does not contain the error '%s'"
" (actual errors: %s)" %
(field, form, i, err, repr(field_errors))
)
elif field in context[form].fields:
self.fail(
msg_prefix + "The field '%s' on form '%s' in context %d contains no errors" %
(field, form, i)
)
else:
self.fail(
msg_prefix + "The form '%s' in context %d does not contain the field '%s'" %
(form, i, field)
)
else:
non_field_errors = context[form].non_field_errors()
self.assertTrue(
err in non_field_errors,
msg_prefix + "The form '%s' in context %d does not"
" contain the non-field error '%s'"
" (actual errors: %s)" %
(form, i, err, non_field_errors or 'none')
)
if not found_form:
self.fail(msg_prefix + "The form '%s' was not used to render the response" % form)
def assertFormsetError(self, response, formset, form_index, field, errors,
msg_prefix=''):
"""
Assert that a formset used to render the response has a specific error.
For field errors, specify the ``form_index`` and the ``field``.
For non-field errors, specify the ``form_index`` and the ``field`` as
None.
For non-form errors, specify ``form_index`` as None and the ``field``
as None.
"""
# Add punctuation to msg_prefix
if msg_prefix:
msg_prefix += ": "
# Put context(s) into a list to simplify processing.
contexts = to_list(response.context)
if not contexts:
self.fail(msg_prefix + 'Response did not use any contexts to '
'render the response')
# Put error(s) into a list to simplify processing.
errors = to_list(errors)
# Search all contexts for the error.
found_formset = False
for i, context in enumerate(contexts):
if formset not in context:
continue
found_formset = True
for err in errors:
if field is not None:
if field in context[formset].forms[form_index].errors:
field_errors = context[formset].forms[form_index].errors[field]
self.assertTrue(
err in field_errors,
msg_prefix + "The field '%s' on formset '%s', "
"form %d in context %d does not contain the "
"error '%s' (actual errors: %s)" %
(field, formset, form_index, i, err, repr(field_errors))
)
elif field in context[formset].forms[form_index].fields:
self.fail(
msg_prefix + "The field '%s' on formset '%s', form %d in context %d contains no errors"
% (field, formset, form_index, i)
)
else:
self.fail(
msg_prefix + "The formset '%s', form %d in context %d does not contain the field '%s'"
% (formset, form_index, i, field)
)
elif form_index is not None:
non_field_errors = context[formset].forms[form_index].non_field_errors()
self.assertFalse(
not non_field_errors,
msg_prefix + "The formset '%s', form %d in context %d "
"does not contain any non-field errors." % (formset, form_index, i)
)
self.assertTrue(
err in non_field_errors,
msg_prefix + "The formset '%s', form %d in context %d "
"does not contain the non-field error '%s' (actual errors: %s)"
% (formset, form_index, i, err, repr(non_field_errors))
)
else:
non_form_errors = context[formset].non_form_errors()
self.assertFalse(
not non_form_errors,
msg_prefix + "The formset '%s' in context %d does not "
"contain any non-form errors." % (formset, i)
)
self.assertTrue(
err in non_form_errors,
msg_prefix + "The formset '%s' in context %d does not "
"contain the non-form error '%s' (actual errors: %s)"
% (formset, i, err, repr(non_form_errors))
)
if not found_formset:
self.fail(msg_prefix + "The formset '%s' was not used to render the response" % formset)
def _assert_template_used(self, response, template_name, msg_prefix):
if response is None and template_name is None:
raise TypeError('response and/or template_name argument must be provided')
if msg_prefix:
msg_prefix += ": "
if template_name is not None and response is not None and not hasattr(response, 'templates'):
raise ValueError(
"assertTemplateUsed() and assertTemplateNotUsed() are only "
"usable on responses fetched using the Django test Client."
)
if not hasattr(response, 'templates') or (response is None and template_name):
if response:
template_name = response
response = None
# use this template with context manager
return template_name, None, msg_prefix
template_names = [t.name for t in response.templates if t.name is not None]
return None, template_names, msg_prefix
def assertTemplateUsed(self, response=None, template_name=None, msg_prefix='', count=None):
"""
Assert that the template with the provided name was used in rendering
the response. Also usable as context manager.
"""
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
response, template_name, msg_prefix)
if context_mgr_template:
# Use assertTemplateUsed as context manager.
return _AssertTemplateUsedContext(self, context_mgr_template)
if not template_names:
self.fail(msg_prefix + "No templates used to render the response")
self.assertTrue(
template_name in template_names,
msg_prefix + "Template '%s' was not a template used to render"
" the response. Actual template(s) used: %s"
% (template_name, ', '.join(template_names))
)
if count is not None:
self.assertEqual(
template_names.count(template_name), count,
msg_prefix + "Template '%s' was expected to be rendered %d "
"time(s) but was actually rendered %d time(s)."
% (template_name, count, template_names.count(template_name))
)
def assertTemplateNotUsed(self, response=None, template_name=None, msg_prefix=''):
"""
Assert that the template with the provided name was NOT used in
rendering the response. Also usable as context manager.
"""
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
response, template_name, msg_prefix
)
if context_mgr_template:
# Use assertTemplateNotUsed as context manager.
return _AssertTemplateNotUsedContext(self, context_mgr_template)
self.assertFalse(
template_name in template_names,
msg_prefix + "Template '%s' was used unexpectedly in rendering the response" % template_name
)
@contextmanager
def _assert_raises_or_warns_cm(self, func, cm_attr, expected_exception, expected_message):
with func(expected_exception) as cm:
yield cm
self.assertIn(expected_message, str(getattr(cm, cm_attr)))
def _assertFooMessage(self, func, cm_attr, expected_exception, expected_message, *args, **kwargs):
callable_obj = None
if args:
callable_obj, *args = args
cm = self._assert_raises_or_warns_cm(func, cm_attr, expected_exception, expected_message)
# Assertion used in context manager fashion.
if callable_obj is None:
return cm
# Assertion was passed a callable.
with cm:
callable_obj(*args, **kwargs)
def assertRaisesMessage(self, expected_exception, expected_message, *args, **kwargs):
"""
Assert that expected_message is found in the message of a raised
exception.
Args:
expected_exception: Exception class expected to be raised.
expected_message: expected error message string value.
args: Function to be called and extra positional args.
kwargs: Extra kwargs.
"""
return self._assertFooMessage(
self.assertRaises, 'exception', expected_exception, expected_message,
*args, **kwargs
)
def assertWarnsMessage(self, expected_warning, expected_message, *args, **kwargs):
"""
Same as assertRaisesMessage but for assertWarns() instead of
assertRaises().
"""
return self._assertFooMessage(
self.assertWarns, 'warning', expected_warning, expected_message,
*args, **kwargs
)
# A similar method is available in Python 3.10+.
if not PY310:
@contextmanager
def assertNoLogs(self, logger, level=None):
"""
Assert no messages are logged on the logger, with at least the
given level.
"""
if isinstance(level, int):
level = logging.getLevelName(level)
elif level is None:
level = 'INFO'
try:
with self.assertLogs(logger, level) as cm:
yield
except AssertionError as e:
msg = e.args[0]
expected_msg = f'no logs of level {level} or higher triggered on {logger}'
if msg != expected_msg:
raise e
else:
self.fail(f'Unexpected logs found: {cm.output!r}')
def assertFieldOutput(self, fieldclass, valid, invalid, field_args=None,
field_kwargs=None, empty_value=''):
"""
Assert that a form field behaves correctly with various inputs.
Args:
fieldclass: the class of the field to be tested.
valid: a dictionary mapping valid inputs to their expected
cleaned values.
invalid: a dictionary mapping invalid inputs to one or more
raised error messages.
field_args: the args passed to instantiate the field
field_kwargs: the kwargs passed to instantiate the field
empty_value: the expected clean output for inputs in empty_values
"""
if field_args is None:
field_args = []
if field_kwargs is None:
field_kwargs = {}
required = fieldclass(*field_args, **field_kwargs)
optional = fieldclass(*field_args, **{**field_kwargs, 'required': False})
# test valid inputs
for input, output in valid.items():
self.assertEqual(required.clean(input), output)
self.assertEqual(optional.clean(input), output)
# test invalid inputs
for input, errors in invalid.items():
with self.assertRaises(ValidationError) as context_manager:
required.clean(input)
self.assertEqual(context_manager.exception.messages, errors)
with self.assertRaises(ValidationError) as context_manager:
optional.clean(input)
self.assertEqual(context_manager.exception.messages, errors)
# test required inputs
error_required = [required.error_messages['required']]
for e in required.empty_values:
with self.assertRaises(ValidationError) as context_manager:
required.clean(e)
self.assertEqual(context_manager.exception.messages, error_required)
self.assertEqual(optional.clean(e), empty_value)
# test that max_length and min_length are always accepted
if issubclass(fieldclass, CharField):
field_kwargs.update({'min_length': 2, 'max_length': 20})
self.assertIsInstance(fieldclass(*field_args, **field_kwargs), fieldclass)
def assertHTMLEqual(self, html1, html2, msg=None):
"""
Assert that two HTML snippets are semantically the same.
Whitespace in most cases is ignored, and attribute ordering is not
significant. The arguments must be valid HTML.
"""
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
if dom1 != dom2:
standardMsg = '%s != %s' % (
safe_repr(dom1, True), safe_repr(dom2, True))
diff = ('\n' + '\n'.join(difflib.ndiff(
str(dom1).splitlines(), str(dom2).splitlines(),
)))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertHTMLNotEqual(self, html1, html2, msg=None):
"""Assert that two HTML snippets are not semantically equivalent."""
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
if dom1 == dom2:
standardMsg = '%s == %s' % (
safe_repr(dom1, True), safe_repr(dom2, True))
self.fail(self._formatMessage(msg, standardMsg))
def assertInHTML(self, needle, haystack, count=None, msg_prefix=''):
needle = assert_and_parse_html(self, needle, None, 'First argument is not valid HTML:')
haystack = assert_and_parse_html(self, haystack, None, 'Second argument is not valid HTML:')
real_count = haystack.count(needle)
if count is not None:
self.assertEqual(
real_count, count,
msg_prefix + "Found %d instances of '%s' in response (expected %d)" % (real_count, needle, count)
)
else:
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find '%s' in response" % needle)
def assertJSONEqual(self, raw, expected_data, msg=None):
"""
Assert that the JSON fragments raw and expected_data are equal.
Usual JSON non-significant whitespace rules apply as the heavyweight
is delegated to the json library.
"""
try:
data = json.loads(raw)
except json.JSONDecodeError:
self.fail("First argument is not valid JSON: %r" % raw)
if isinstance(expected_data, str):
try:
expected_data = json.loads(expected_data)
except ValueError:
self.fail("Second argument is not valid JSON: %r" % expected_data)
self.assertEqual(data, expected_data, msg=msg)
def assertJSONNotEqual(self, raw, expected_data, msg=None):
"""
Assert that the JSON fragments raw and expected_data are not equal.
Usual JSON non-significant whitespace rules apply as the heavyweight
is delegated to the json library.
"""
try:
data = json.loads(raw)
except json.JSONDecodeError:
self.fail("First argument is not valid JSON: %r" % raw)
if isinstance(expected_data, str):
try:
expected_data = json.loads(expected_data)
except json.JSONDecodeError:
self.fail("Second argument is not valid JSON: %r" % expected_data)
self.assertNotEqual(data, expected_data, msg=msg)
def assertXMLEqual(self, xml1, xml2, msg=None):
"""
Assert that two XML snippets are semantically the same.
Whitespace in most cases is ignored and attribute ordering is not
significant. The arguments must be valid XML.
"""
try:
result = compare_xml(xml1, xml2)
except Exception as e:
standardMsg = 'First or second argument is not valid XML\n%s' % e
self.fail(self._formatMessage(msg, standardMsg))
else:
if not result:
standardMsg = '%s != %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
diff = ('\n' + '\n'.join(
difflib.ndiff(xml1.splitlines(), xml2.splitlines())
))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertXMLNotEqual(self, xml1, xml2, msg=None):
"""
Assert that two XML snippets are not semantically equivalent.
Whitespace in most cases is ignored and attribute ordering is not
significant. The arguments must be valid XML.
"""
try:
result = compare_xml(xml1, xml2)
except Exception as e:
standardMsg = 'First or second argument is not valid XML\n%s' % e
self.fail(self._formatMessage(msg, standardMsg))
else:
if result:
standardMsg = '%s == %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
self.fail(self._formatMessage(msg, standardMsg))
class TransactionTestCase(SimpleTestCase):
# Subclasses can ask for resetting of auto increment sequence before each
# test case
reset_sequences = False
# Subclasses can enable only a subset of apps for faster tests
available_apps = None
# Subclasses can define fixtures which will be automatically installed.
fixtures = None
databases = {DEFAULT_DB_ALIAS}
_disallowed_database_msg = (
'Database %(operation)s to %(alias)r are not allowed in this test. '
'Add %(alias)r to %(test)s.databases to ensure proper test isolation '
'and silence this failure.'
)
# If transactions aren't available, Django will serialize the database
# contents into a fixture during setup and flush and reload them
# during teardown (as flush does not restore data from migrations).
# This can be slow; this flag allows enabling on a per-case basis.
serialized_rollback = False
def _pre_setup(self):
"""
Perform pre-test setup:
* If the class has an 'available_apps' attribute, restrict the app
registry to these applications, then fire the post_migrate signal --
it must run with the correct set of applications for the test case.
* If the class has a 'fixtures' attribute, install those fixtures.
"""
super()._pre_setup()
if self.available_apps is not None:
apps.set_available_apps(self.available_apps)
setting_changed.send(
sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=self.available_apps,
enter=True,
)
for db_name in self._databases_names(include_mirrors=False):
emit_post_migrate_signal(verbosity=0, interactive=False, db=db_name)
try:
self._fixture_setup()
except Exception:
if self.available_apps is not None:
apps.unset_available_apps()
setting_changed.send(
sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=settings.INSTALLED_APPS,
enter=False,
)
raise
# Clear the queries_log so that it's less likely to overflow (a single
# test probably won't execute 9K queries). If queries_log overflows,
# then assertNumQueries() doesn't work.
for db_name in self._databases_names(include_mirrors=False):
connections[db_name].queries_log.clear()
@classmethod
def _databases_names(cls, include_mirrors=True):
# Only consider allowed database aliases, including mirrors or not.
return [
alias for alias in connections
if alias in cls.databases and (
include_mirrors or not connections[alias].settings_dict['TEST']['MIRROR']
)
]
def _reset_sequences(self, db_name):
conn = connections[db_name]
if conn.features.supports_sequence_reset:
sql_list = conn.ops.sequence_reset_by_name_sql(
no_style(), conn.introspection.sequence_list())
if sql_list:
with transaction.atomic(using=db_name):
with conn.cursor() as cursor:
for sql in sql_list:
cursor.execute(sql)
def _fixture_setup(self):
for db_name in self._databases_names(include_mirrors=False):
# Reset sequences
if self.reset_sequences:
self._reset_sequences(db_name)
# Provide replica initial data from migrated apps, if needed.
if self.serialized_rollback and hasattr(connections[db_name], "_test_serialized_contents"):
if self.available_apps is not None:
apps.unset_available_apps()
connections[db_name].creation.deserialize_db_from_string(
connections[db_name]._test_serialized_contents
)
if self.available_apps is not None:
apps.set_available_apps(self.available_apps)
if self.fixtures:
# We have to use this slightly awkward syntax due to the fact
# that we're using *args and **kwargs together.
call_command('loaddata', *self.fixtures,
**{'verbosity': 0, 'database': db_name})
def _should_reload_connections(self):
return True
def _post_teardown(self):
"""
Perform post-test things:
* Flush the contents of the database to leave a clean slate. If the
class has an 'available_apps' attribute, don't fire post_migrate.
* Force-close the connection so the next test gets a clean cursor.
"""
try:
self._fixture_teardown()
super()._post_teardown()
if self._should_reload_connections():
# Some DB cursors include SQL statements as part of cursor
# creation. If you have a test that does a rollback, the effect
# of these statements is lost, which can affect the operation of
# tests (e.g., losing a timezone setting causing objects to be
# created with the wrong time). To make sure this doesn't
# happen, get a clean connection at the start of every test.
for conn in connections.all():
conn.close()
finally:
if self.available_apps is not None:
apps.unset_available_apps()
setting_changed.send(sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=settings.INSTALLED_APPS,
enter=False)
def _fixture_teardown(self):
# Allow TRUNCATE ... CASCADE and don't emit the post_migrate signal
# when flushing only a subset of the apps
for db_name in self._databases_names(include_mirrors=False):
# Flush the database
inhibit_post_migrate = (
self.available_apps is not None or
( # Inhibit the post_migrate signal when using serialized
# rollback to avoid trying to recreate the serialized data.
self.serialized_rollback and
hasattr(connections[db_name], '_test_serialized_contents')
)
)
call_command('flush', verbosity=0, interactive=False,
database=db_name, reset_sequences=False,
allow_cascade=self.available_apps is not None,
inhibit_post_migrate=inhibit_post_migrate)
def assertQuerysetEqual(self, qs, values, transform=None, ordered=True, msg=None):
values = list(values)
items = qs
if transform is not None:
items = map(transform, items)
if not ordered:
return self.assertDictEqual(Counter(items), Counter(values), msg=msg)
# For example qs.iterator() could be passed as qs, but it does not
# have 'ordered' attribute.
if len(values) > 1 and hasattr(qs, 'ordered') and not qs.ordered:
raise ValueError(
'Trying to compare non-ordered queryset against more than one '
'ordered value.'
)
return self.assertEqual(list(items), values, msg=msg)
def assertNumQueries(self, num, func=None, *args, using=DEFAULT_DB_ALIAS, **kwargs):
conn = connections[using]
context = _AssertNumQueriesContext(self, num, conn)
if func is None:
return context
with context:
func(*args, **kwargs)
def connections_support_transactions(aliases=None):
"""
Return whether or not all (or specified) connections support
transactions.
"""
conns = connections.all() if aliases is None else (connections[alias] for alias in aliases)
return all(conn.features.supports_transactions for conn in conns)
class TestData:
"""
Descriptor to provide TestCase instance isolation for attributes assigned
during the setUpTestData() phase.
Allow safe alteration of objects assigned in setUpTestData() by test
methods by exposing deep copies instead of the original objects.
Objects are deep copied using a memo kept on the test case instance in
order to maintain their original relationships.
"""
memo_attr = '_testdata_memo'
def __init__(self, name, data):
self.name = name
self.data = data
def get_memo(self, testcase):
try:
memo = getattr(testcase, self.memo_attr)
except AttributeError:
memo = {}
setattr(testcase, self.memo_attr, memo)
return memo
def __get__(self, instance, owner):
if instance is None:
return self.data
memo = self.get_memo(instance)
data = deepcopy(self.data, memo)
setattr(instance, self.name, data)
return data
def __repr__(self):
return '<TestData: name=%r, data=%r>' % (self.name, self.data)
class TestCase(TransactionTestCase):
"""
Similar to TransactionTestCase, but use `transaction.atomic()` to achieve
test isolation.
In most situations, TestCase should be preferred to TransactionTestCase as
it allows faster execution. However, there are some situations where using
TransactionTestCase might be necessary (e.g. testing some transactional
behavior).
On database backends with no transaction support, TestCase behaves as
TransactionTestCase.
"""
@classmethod
def _enter_atomics(cls):
"""Open atomic blocks for multiple databases."""
atomics = {}
for db_name in cls._databases_names():
atomics[db_name] = transaction.atomic(using=db_name)
atomics[db_name].__enter__()
return atomics
@classmethod
def _rollback_atomics(cls, atomics):
"""Rollback atomic blocks opened by the previous method."""
for db_name in reversed(cls._databases_names()):
transaction.set_rollback(True, using=db_name)
atomics[db_name].__exit__(None, None, None)
@classmethod
def _databases_support_transactions(cls):
return connections_support_transactions(cls.databases)
@classmethod
def setUpClass(cls):
super().setUpClass()
if not cls._databases_support_transactions():
return
# Disable the durability check to allow testing durable atomic blocks
# in a transaction for performance reasons.
transaction.Atomic._ensure_durability = False
try:
cls.cls_atomics = cls._enter_atomics()
if cls.fixtures:
for db_name in cls._databases_names(include_mirrors=False):
try:
call_command('loaddata', *cls.fixtures, **{'verbosity': 0, 'database': db_name})
except Exception:
cls._rollback_atomics(cls.cls_atomics)
raise
pre_attrs = cls.__dict__.copy()
try:
cls.setUpTestData()
except Exception:
cls._rollback_atomics(cls.cls_atomics)
raise
for name, value in cls.__dict__.items():
if value is not pre_attrs.get(name):
setattr(cls, name, TestData(name, value))
except Exception:
transaction.Atomic._ensure_durability = True
raise
@classmethod
def tearDownClass(cls):
transaction.Atomic._ensure_durability = True
if cls._databases_support_transactions():
cls._rollback_atomics(cls.cls_atomics)
for conn in connections.all():
conn.close()
super().tearDownClass()
@classmethod
def setUpTestData(cls):
"""Load initial data for the TestCase."""
pass
def _should_reload_connections(self):
if self._databases_support_transactions():
return False
return super()._should_reload_connections()
def _fixture_setup(self):
if not self._databases_support_transactions():
# If the backend does not support transactions, we should reload
# class data before each test
self.setUpTestData()
return super()._fixture_setup()
if self.reset_sequences:
raise TypeError('reset_sequences cannot be used on TestCase instances')
self.atomics = self._enter_atomics()
def _fixture_teardown(self):
if not self._databases_support_transactions():
return super()._fixture_teardown()
try:
for db_name in reversed(self._databases_names()):
if self._should_check_constraints(connections[db_name]):
connections[db_name].check_constraints()
finally:
self._rollback_atomics(self.atomics)
def _should_check_constraints(self, connection):
return (
connection.features.can_defer_constraint_checks and
not connection.needs_rollback and connection.is_usable()
)
@classmethod
@contextmanager
def captureOnCommitCallbacks(cls, *, using=DEFAULT_DB_ALIAS, execute=False):
"""Context manager to capture transaction.on_commit() callbacks."""
callbacks = []
start_count = len(connections[using].run_on_commit)
try:
yield callbacks
finally:
callback_count = len(connections[using].run_on_commit)
while True:
run_on_commit = connections[using].run_on_commit[start_count:]
callbacks[:] = [func for sids, func in run_on_commit]
if execute:
for callback in callbacks:
callback()
if callback_count == len(connections[using].run_on_commit):
break
start_count = callback_count - 1
callback_count = len(connections[using].run_on_commit)
class CheckCondition:
"""Descriptor class for deferred condition checking."""
def __init__(self, *conditions):
self.conditions = conditions
def add_condition(self, condition, reason):
return self.__class__(*self.conditions, (condition, reason))
def __get__(self, instance, cls=None):
# Trigger access for all bases.
if any(getattr(base, '__unittest_skip__', False) for base in cls.__bases__):
return True
for condition, reason in self.conditions:
if condition():
# Override this descriptor's value and set the skip reason.
cls.__unittest_skip__ = True
cls.__unittest_skip_why__ = reason
return True
return False
def _deferredSkip(condition, reason, name):
def decorator(test_func):
nonlocal condition
if not (isinstance(test_func, type) and
issubclass(test_func, unittest.TestCase)):
@wraps(test_func)
def skip_wrapper(*args, **kwargs):
if (args and isinstance(args[0], unittest.TestCase) and
connection.alias not in getattr(args[0], 'databases', {})):
raise ValueError(
"%s cannot be used on %s as %s doesn't allow queries "
"against the %r database." % (
name,
args[0],
args[0].__class__.__qualname__,
connection.alias,
)
)
if condition():
raise unittest.SkipTest(reason)
return test_func(*args, **kwargs)
test_item = skip_wrapper
else:
# Assume a class is decorated
test_item = test_func
databases = getattr(test_item, 'databases', None)
if not databases or connection.alias not in databases:
# Defer raising to allow importing test class's module.
def condition():
raise ValueError(
"%s cannot be used on %s as it doesn't allow queries "
"against the '%s' database." % (
name, test_item, connection.alias,
)
)
# Retrieve the possibly existing value from the class's dict to
# avoid triggering the descriptor.
skip = test_func.__dict__.get('__unittest_skip__')
if isinstance(skip, CheckCondition):
test_item.__unittest_skip__ = skip.add_condition(condition, reason)
elif skip is not True:
test_item.__unittest_skip__ = CheckCondition((condition, reason))
return test_item
return decorator
def skipIfDBFeature(*features):
"""Skip a test if a database has at least one of the named features."""
return _deferredSkip(
lambda: any(getattr(connection.features, feature, False) for feature in features),
"Database has feature(s) %s" % ", ".join(features),
'skipIfDBFeature',
)
def skipUnlessDBFeature(*features):
"""Skip a test unless a database has all the named features."""
return _deferredSkip(
lambda: not all(getattr(connection.features, feature, False) for feature in features),
"Database doesn't support feature(s): %s" % ", ".join(features),
'skipUnlessDBFeature',
)
def skipUnlessAnyDBFeature(*features):
"""Skip a test unless a database has any of the named features."""
return _deferredSkip(
lambda: not any(getattr(connection.features, feature, False) for feature in features),
"Database doesn't support any of the feature(s): %s" % ", ".join(features),
'skipUnlessAnyDBFeature',
)
class QuietWSGIRequestHandler(WSGIRequestHandler):
"""
A WSGIRequestHandler that doesn't log to standard output any of the
requests received, so as to not clutter the test result output.
"""
def log_message(*args):
pass
class FSFilesHandler(WSGIHandler):
"""
WSGI middleware that intercepts calls to a directory, as defined by one of
the *_ROOT settings, and serves those files, publishing them under *_URL.
"""
def __init__(self, application):
self.application = application
self.base_url = urlparse(self.get_base_url())
super().__init__()
def _should_handle(self, path):
"""
Check if the path should be handled. Ignore the path if:
* the host is provided as part of the base_url
* the request's path isn't under the media path (or equal)
"""
return path.startswith(self.base_url[2]) and not self.base_url[1]
def file_path(self, url):
"""Return the relative path to the file on disk for the given URL."""
relative_url = url[len(self.base_url[2]):]
return url2pathname(relative_url)
def get_response(self, request):
from django.http import Http404
if self._should_handle(request.path):
try:
return self.serve(request)
except Http404:
pass
return super().get_response(request)
def serve(self, request):
os_rel_path = self.file_path(request.path)
os_rel_path = posixpath.normpath(unquote(os_rel_path))
# Emulate behavior of django.contrib.staticfiles.views.serve() when it
# invokes staticfiles' finders functionality.
# TODO: Modify if/when that internal API is refactored
final_rel_path = os_rel_path.replace('\\', '/').lstrip('/')
return serve(request, final_rel_path, document_root=self.get_base_dir())
def __call__(self, environ, start_response):
if not self._should_handle(get_path_info(environ)):
return self.application(environ, start_response)
return super().__call__(environ, start_response)
class _StaticFilesHandler(FSFilesHandler):
"""
Handler for serving static files. A private class that is meant to be used
solely as a convenience by LiveServerThread.
"""
def get_base_dir(self):
return settings.STATIC_ROOT
def get_base_url(self):
return settings.STATIC_URL
class _MediaFilesHandler(FSFilesHandler):
"""
Handler for serving the media files. A private class that is meant to be
used solely as a convenience by LiveServerThread.
"""
def get_base_dir(self):
return settings.MEDIA_ROOT
def get_base_url(self):
return settings.MEDIA_URL
class LiveServerThread(threading.Thread):
"""Thread for running a live HTTP server while the tests are running."""
server_class = ThreadedWSGIServer
def __init__(self, host, static_handler, connections_override=None, port=0):
self.host = host
self.port = port
self.is_ready = threading.Event()
self.error = None
self.static_handler = static_handler
self.connections_override = connections_override
super().__init__()
def run(self):
"""
Set up the live server and databases, and then loop over handling
HTTP requests.
"""
if self.connections_override:
# Override this thread's database connections with the ones
# provided by the main thread.
for alias, conn in self.connections_override.items():
connections[alias] = conn
try:
# Create the handler for serving static and media files
handler = self.static_handler(_MediaFilesHandler(WSGIHandler()))
self.httpd = self._create_server()
# If binding to port zero, assign the port allocated by the OS.
if self.port == 0:
self.port = self.httpd.server_address[1]
self.httpd.set_app(handler)
self.is_ready.set()
self.httpd.serve_forever()
except Exception as e:
self.error = e
self.is_ready.set()
finally:
connections.close_all()
def _create_server(self, connections_override=None):
return self.server_class(
(self.host, self.port),
QuietWSGIRequestHandler,
allow_reuse_address=False,
connections_override=connections_override,
)
def terminate(self):
if hasattr(self, 'httpd'):
# Stop the WSGI server
self.httpd.shutdown()
self.httpd.server_close()
self.join()
class LiveServerTestCase(TransactionTestCase):
"""
Do basically the same as TransactionTestCase but also launch a live HTTP
server in a separate thread so that the tests may use another testing
framework, such as Selenium for example, instead of the built-in dummy
client.
It inherits from TransactionTestCase instead of TestCase because the
threads don't share the same transactions (unless if using in-memory sqlite)
and each thread needs to commit all their transactions so that the other
thread can see the changes.
"""
host = 'localhost'
port = 0
server_thread_class = LiveServerThread
static_handler = _StaticFilesHandler
@classproperty
def live_server_url(cls):
return 'http://%s:%s' % (cls.host, cls.server_thread.port)
@classproperty
def allowed_host(cls):
return cls.host
@classmethod
def _make_connections_override(cls):
connections_override = {}
for conn in connections.all():
# If using in-memory sqlite databases, pass the connections to
# the server thread.
if conn.vendor == 'sqlite' and conn.is_in_memory_db():
connections_override[conn.alias] = conn
return connections_override
@classmethod
def setUpClass(cls):
super().setUpClass()
cls._live_server_modified_settings = modify_settings(
ALLOWED_HOSTS={'append': cls.allowed_host},
)
cls._live_server_modified_settings.enable()
cls.addClassCleanup(cls._live_server_modified_settings.disable)
cls._start_server_thread()
@classmethod
def _start_server_thread(cls):
connections_override = cls._make_connections_override()
for conn in connections_override.values():
# Explicitly enable thread-shareability for this connection.
conn.inc_thread_sharing()
cls.server_thread = cls._create_server_thread(connections_override)
cls.server_thread.daemon = True
cls.server_thread.start()
cls.addClassCleanup(cls._terminate_thread)
# Wait for the live server to be ready
cls.server_thread.is_ready.wait()
if cls.server_thread.error:
raise cls.server_thread.error
@classmethod
def _create_server_thread(cls, connections_override):
return cls.server_thread_class(
cls.host,
cls.static_handler,
connections_override=connections_override,
port=cls.port,
)
@classmethod
def _terminate_thread(cls):
# Terminate the live server's thread.
cls.server_thread.terminate()
# Restore shared connections' non-shareability.
for conn in cls.server_thread.connections_override.values():
conn.dec_thread_sharing()
class SerializeMixin:
"""
Enforce serialization of TestCases that share a common resource.
Define a common 'lockfile' for each set of TestCases to serialize. This
file must exist on the filesystem.
Place it early in the MRO in order to isolate setUpClass()/tearDownClass().
"""
lockfile = None
def __init_subclass__(cls, /, **kwargs):
super().__init_subclass__(**kwargs)
if cls.lockfile is None:
raise ValueError(
"{}.lockfile isn't set. Set it to a unique value "
"in the base class.".format(cls.__name__))
@classmethod
def setUpClass(cls):
cls._lockfile = open(cls.lockfile)
cls.addClassCleanup(cls._lockfile.close)
locks.lock(cls._lockfile, locks.LOCK_EX)
super().setUpClass()
|
84699cd7d7736c52b2830353580e59c99aca24cc7d9912469da2727e3d886801 | import functools
import re
from itertools import chain
from django.conf import settings
from django.db import models
from django.db.migrations import operations
from django.db.migrations.migration import Migration
from django.db.migrations.operations.models import AlterModelOptions
from django.db.migrations.optimizer import MigrationOptimizer
from django.db.migrations.questioner import MigrationQuestioner
from django.db.migrations.utils import (
COMPILED_REGEX_TYPE, RegexObject, resolve_relation,
)
from django.utils.topological_sort import stable_topological_sort
class MigrationAutodetector:
"""
Take a pair of ProjectStates and compare them to see what the first would
need doing to make it match the second (the second usually being the
project's current state).
Note that this naturally operates on entire projects at a time,
as it's likely that changes interact (for example, you can't
add a ForeignKey without having a migration to add the table it
depends on first). A user interface may offer single-app usage
if it wishes, with the caveat that it may not always be possible.
"""
def __init__(self, from_state, to_state, questioner=None):
self.from_state = from_state
self.to_state = to_state
self.questioner = questioner or MigrationQuestioner()
self.existing_apps = {app for app, model in from_state.models}
def changes(self, graph, trim_to_apps=None, convert_apps=None, migration_name=None):
"""
Main entry point to produce a list of applicable changes.
Take a graph to base names on and an optional set of apps
to try and restrict to (restriction is not guaranteed)
"""
changes = self._detect_changes(convert_apps, graph)
changes = self.arrange_for_graph(changes, graph, migration_name)
if trim_to_apps:
changes = self._trim_to_apps(changes, trim_to_apps)
return changes
def deep_deconstruct(self, obj):
"""
Recursive deconstruction for a field and its arguments.
Used for full comparison for rename/alter; sometimes a single-level
deconstruction will not compare correctly.
"""
if isinstance(obj, list):
return [self.deep_deconstruct(value) for value in obj]
elif isinstance(obj, tuple):
return tuple(self.deep_deconstruct(value) for value in obj)
elif isinstance(obj, dict):
return {
key: self.deep_deconstruct(value)
for key, value in obj.items()
}
elif isinstance(obj, functools.partial):
return (obj.func, self.deep_deconstruct(obj.args), self.deep_deconstruct(obj.keywords))
elif isinstance(obj, COMPILED_REGEX_TYPE):
return RegexObject(obj)
elif isinstance(obj, type):
# If this is a type that implements 'deconstruct' as an instance method,
# avoid treating this as being deconstructible itself - see #22951
return obj
elif hasattr(obj, 'deconstruct'):
deconstructed = obj.deconstruct()
if isinstance(obj, models.Field):
# we have a field which also returns a name
deconstructed = deconstructed[1:]
path, args, kwargs = deconstructed
return (
path,
[self.deep_deconstruct(value) for value in args],
{
key: self.deep_deconstruct(value)
for key, value in kwargs.items()
},
)
else:
return obj
def only_relation_agnostic_fields(self, fields):
"""
Return a definition of the fields that ignores field names and
what related fields actually relate to. Used for detecting renames (as
the related fields change during renames).
"""
fields_def = []
for name, field in sorted(fields.items()):
deconstruction = self.deep_deconstruct(field)
if field.remote_field and field.remote_field.model:
del deconstruction[2]['to']
fields_def.append(deconstruction)
return fields_def
def _detect_changes(self, convert_apps=None, graph=None):
"""
Return a dict of migration plans which will achieve the
change from from_state to to_state. The dict has app labels
as keys and a list of migrations as values.
The resulting migrations aren't specially named, but the names
do matter for dependencies inside the set.
convert_apps is the list of apps to convert to use migrations
(i.e. to make initial migrations for, in the usual case)
graph is an optional argument that, if provided, can help improve
dependency generation and avoid potential circular dependencies.
"""
# The first phase is generating all the operations for each app
# and gathering them into a big per-app list.
# Then go through that list, order it, and split into migrations to
# resolve dependencies caused by M2Ms and FKs.
self.generated_operations = {}
self.altered_indexes = {}
self.altered_constraints = {}
# Prepare some old/new state and model lists, separating
# proxy models and ignoring unmigrated apps.
self.old_model_keys = set()
self.old_proxy_keys = set()
self.old_unmanaged_keys = set()
self.new_model_keys = set()
self.new_proxy_keys = set()
self.new_unmanaged_keys = set()
for (app_label, model_name), model_state in self.from_state.models.items():
if not model_state.options.get('managed', True):
self.old_unmanaged_keys.add((app_label, model_name))
elif app_label not in self.from_state.real_apps:
if model_state.options.get('proxy'):
self.old_proxy_keys.add((app_label, model_name))
else:
self.old_model_keys.add((app_label, model_name))
for (app_label, model_name), model_state in self.to_state.models.items():
if not model_state.options.get('managed', True):
self.new_unmanaged_keys.add((app_label, model_name))
elif (
app_label not in self.from_state.real_apps or
(convert_apps and app_label in convert_apps)
):
if model_state.options.get('proxy'):
self.new_proxy_keys.add((app_label, model_name))
else:
self.new_model_keys.add((app_label, model_name))
self.from_state.resolve_fields_and_relations()
self.to_state.resolve_fields_and_relations()
# Renames have to come first
self.generate_renamed_models()
# Prepare lists of fields and generate through model map
self._prepare_field_lists()
self._generate_through_model_map()
# Generate non-rename model operations
self.generate_deleted_models()
self.generate_created_models()
self.generate_deleted_proxies()
self.generate_created_proxies()
self.generate_altered_options()
self.generate_altered_managers()
# Create the altered indexes and store them in self.altered_indexes.
# This avoids the same computation in generate_removed_indexes()
# and generate_added_indexes().
self.create_altered_indexes()
self.create_altered_constraints()
# Generate index removal operations before field is removed
self.generate_removed_constraints()
self.generate_removed_indexes()
# Generate field renaming operations.
self.generate_renamed_fields()
# Generate removal of foo together.
self.generate_removed_altered_unique_together()
self.generate_removed_altered_index_together()
# Generate field operations.
self.generate_removed_fields()
self.generate_added_fields()
self.generate_altered_fields()
self.generate_altered_order_with_respect_to()
self.generate_altered_unique_together()
self.generate_altered_index_together()
self.generate_added_indexes()
self.generate_added_constraints()
self.generate_altered_db_table()
self._sort_migrations()
self._build_migration_list(graph)
self._optimize_migrations()
return self.migrations
def _prepare_field_lists(self):
"""
Prepare field lists and a list of the fields that used through models
in the old state so dependencies can be made from the through model
deletion to the field that uses it.
"""
self.kept_model_keys = self.old_model_keys & self.new_model_keys
self.kept_proxy_keys = self.old_proxy_keys & self.new_proxy_keys
self.kept_unmanaged_keys = self.old_unmanaged_keys & self.new_unmanaged_keys
self.through_users = {}
self.old_field_keys = {
(app_label, model_name, field_name)
for app_label, model_name in self.kept_model_keys
for field_name in self.from_state.models[
app_label,
self.renamed_models.get((app_label, model_name), model_name)
].fields
}
self.new_field_keys = {
(app_label, model_name, field_name)
for app_label, model_name in self.kept_model_keys
for field_name in self.to_state.models[app_label, model_name].fields
}
def _generate_through_model_map(self):
"""Through model map generation."""
for app_label, model_name in sorted(self.old_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
for field_name, field in old_model_state.fields.items():
if hasattr(field, 'remote_field') and getattr(field.remote_field, 'through', None):
through_key = resolve_relation(field.remote_field.through, app_label, model_name)
self.through_users[through_key] = (app_label, old_model_name, field_name)
@staticmethod
def _resolve_dependency(dependency):
"""
Return the resolved dependency and a boolean denoting whether or not
it was swappable.
"""
if dependency[0] != '__setting__':
return dependency, False
resolved_app_label, resolved_object_name = getattr(settings, dependency[1]).split('.')
return (resolved_app_label, resolved_object_name.lower()) + dependency[2:], True
def _build_migration_list(self, graph=None):
"""
Chop the lists of operations up into migrations with dependencies on
each other. Do this by going through an app's list of operations until
one is found that has an outgoing dependency that isn't in another
app's migration yet (hasn't been chopped off its list). Then chop off
the operations before it into a migration and move onto the next app.
If the loops completes without doing anything, there's a circular
dependency (which _should_ be impossible as the operations are
all split at this point so they can't depend and be depended on).
"""
self.migrations = {}
num_ops = sum(len(x) for x in self.generated_operations.values())
chop_mode = False
while num_ops:
# On every iteration, we step through all the apps and see if there
# is a completed set of operations.
# If we find that a subset of the operations are complete we can
# try to chop it off from the rest and continue, but we only
# do this if we've already been through the list once before
# without any chopping and nothing has changed.
for app_label in sorted(self.generated_operations):
chopped = []
dependencies = set()
for operation in list(self.generated_operations[app_label]):
deps_satisfied = True
operation_dependencies = set()
for dep in operation._auto_deps:
# Temporarily resolve the swappable dependency to
# prevent circular references. While keeping the
# dependency checks on the resolved model, add the
# swappable dependencies.
original_dep = dep
dep, is_swappable_dep = self._resolve_dependency(dep)
if dep[0] != app_label:
# External app dependency. See if it's not yet
# satisfied.
for other_operation in self.generated_operations.get(dep[0], []):
if self.check_dependency(other_operation, dep):
deps_satisfied = False
break
if not deps_satisfied:
break
else:
if is_swappable_dep:
operation_dependencies.add((original_dep[0], original_dep[1]))
elif dep[0] in self.migrations:
operation_dependencies.add((dep[0], self.migrations[dep[0]][-1].name))
else:
# If we can't find the other app, we add a first/last dependency,
# but only if we've already been through once and checked everything
if chop_mode:
# If the app already exists, we add a dependency on the last migration,
# as we don't know which migration contains the target field.
# If it's not yet migrated or has no migrations, we use __first__
if graph and graph.leaf_nodes(dep[0]):
operation_dependencies.add(graph.leaf_nodes(dep[0])[0])
else:
operation_dependencies.add((dep[0], "__first__"))
else:
deps_satisfied = False
if deps_satisfied:
chopped.append(operation)
dependencies.update(operation_dependencies)
del self.generated_operations[app_label][0]
else:
break
# Make a migration! Well, only if there's stuff to put in it
if dependencies or chopped:
if not self.generated_operations[app_label] or chop_mode:
subclass = type("Migration", (Migration,), {"operations": [], "dependencies": []})
instance = subclass("auto_%i" % (len(self.migrations.get(app_label, [])) + 1), app_label)
instance.dependencies = list(dependencies)
instance.operations = chopped
instance.initial = app_label not in self.existing_apps
self.migrations.setdefault(app_label, []).append(instance)
chop_mode = False
else:
self.generated_operations[app_label] = chopped + self.generated_operations[app_label]
new_num_ops = sum(len(x) for x in self.generated_operations.values())
if new_num_ops == num_ops:
if not chop_mode:
chop_mode = True
else:
raise ValueError("Cannot resolve operation dependencies: %r" % self.generated_operations)
num_ops = new_num_ops
def _sort_migrations(self):
"""
Reorder to make things possible. Reordering may be needed so FKs work
nicely inside the same app.
"""
for app_label, ops in sorted(self.generated_operations.items()):
# construct a dependency graph for intra-app dependencies
dependency_graph = {op: set() for op in ops}
for op in ops:
for dep in op._auto_deps:
# Resolve intra-app dependencies to handle circular
# references involving a swappable model.
dep = self._resolve_dependency(dep)[0]
if dep[0] == app_label:
for op2 in ops:
if self.check_dependency(op2, dep):
dependency_graph[op].add(op2)
# we use a stable sort for deterministic tests & general behavior
self.generated_operations[app_label] = stable_topological_sort(ops, dependency_graph)
def _optimize_migrations(self):
# Add in internal dependencies among the migrations
for app_label, migrations in self.migrations.items():
for m1, m2 in zip(migrations, migrations[1:]):
m2.dependencies.append((app_label, m1.name))
# De-dupe dependencies
for migrations in self.migrations.values():
for migration in migrations:
migration.dependencies = list(set(migration.dependencies))
# Optimize migrations
for app_label, migrations in self.migrations.items():
for migration in migrations:
migration.operations = MigrationOptimizer().optimize(migration.operations, app_label)
def check_dependency(self, operation, dependency):
"""
Return True if the given operation depends on the given dependency,
False otherwise.
"""
# Created model
if dependency[2] is None and dependency[3] is True:
return (
isinstance(operation, operations.CreateModel) and
operation.name_lower == dependency[1].lower()
)
# Created field
elif dependency[2] is not None and dependency[3] is True:
return (
(
isinstance(operation, operations.CreateModel) and
operation.name_lower == dependency[1].lower() and
any(dependency[2] == x for x, y in operation.fields)
) or
(
isinstance(operation, operations.AddField) and
operation.model_name_lower == dependency[1].lower() and
operation.name_lower == dependency[2].lower()
)
)
# Removed field
elif dependency[2] is not None and dependency[3] is False:
return (
isinstance(operation, operations.RemoveField) and
operation.model_name_lower == dependency[1].lower() and
operation.name_lower == dependency[2].lower()
)
# Removed model
elif dependency[2] is None and dependency[3] is False:
return (
isinstance(operation, operations.DeleteModel) and
operation.name_lower == dependency[1].lower()
)
# Field being altered
elif dependency[2] is not None and dependency[3] == "alter":
return (
isinstance(operation, operations.AlterField) and
operation.model_name_lower == dependency[1].lower() and
operation.name_lower == dependency[2].lower()
)
# order_with_respect_to being unset for a field
elif dependency[2] is not None and dependency[3] == "order_wrt_unset":
return (
isinstance(operation, operations.AlterOrderWithRespectTo) and
operation.name_lower == dependency[1].lower() and
(operation.order_with_respect_to or "").lower() != dependency[2].lower()
)
# Field is removed and part of an index/unique_together
elif dependency[2] is not None and dependency[3] == "foo_together_change":
return (
isinstance(operation, (operations.AlterUniqueTogether,
operations.AlterIndexTogether)) and
operation.name_lower == dependency[1].lower()
)
# Unknown dependency. Raise an error.
else:
raise ValueError("Can't handle dependency %r" % (dependency,))
def add_operation(self, app_label, operation, dependencies=None, beginning=False):
# Dependencies are (app_label, model_name, field_name, create/delete as True/False)
operation._auto_deps = dependencies or []
if beginning:
self.generated_operations.setdefault(app_label, []).insert(0, operation)
else:
self.generated_operations.setdefault(app_label, []).append(operation)
def swappable_first_key(self, item):
"""
Place potential swappable models first in lists of created models (only
real way to solve #22783).
"""
try:
model_state = self.to_state.models[item]
base_names = {
base if isinstance(base, str) else base.__name__
for base in model_state.bases
}
string_version = "%s.%s" % (item[0], item[1])
if (
model_state.options.get('swappable') or
"AbstractUser" in base_names or
"AbstractBaseUser" in base_names or
settings.AUTH_USER_MODEL.lower() == string_version.lower()
):
return ("___" + item[0], "___" + item[1])
except LookupError:
pass
return item
def generate_renamed_models(self):
"""
Find any renamed models, generate the operations for them, and remove
the old entry from the model lists. Must be run before other
model-level generation.
"""
self.renamed_models = {}
self.renamed_models_rel = {}
added_models = self.new_model_keys - self.old_model_keys
for app_label, model_name in sorted(added_models):
model_state = self.to_state.models[app_label, model_name]
model_fields_def = self.only_relation_agnostic_fields(model_state.fields)
removed_models = self.old_model_keys - self.new_model_keys
for rem_app_label, rem_model_name in removed_models:
if rem_app_label == app_label:
rem_model_state = self.from_state.models[rem_app_label, rem_model_name]
rem_model_fields_def = self.only_relation_agnostic_fields(rem_model_state.fields)
if model_fields_def == rem_model_fields_def:
if self.questioner.ask_rename_model(rem_model_state, model_state):
dependencies = []
fields = list(model_state.fields.values()) + [
field.remote_field
for relations in self.to_state.relations[app_label, model_name].values()
for field in relations.values()
]
for field in fields:
if field.is_relation:
dependencies.extend(
self._get_dependencies_for_foreign_key(
app_label, model_name, field, self.to_state,
)
)
self.add_operation(
app_label,
operations.RenameModel(
old_name=rem_model_state.name,
new_name=model_state.name,
),
dependencies=dependencies,
)
self.renamed_models[app_label, model_name] = rem_model_name
renamed_models_rel_key = '%s.%s' % (
rem_model_state.app_label,
rem_model_state.name_lower,
)
self.renamed_models_rel[renamed_models_rel_key] = '%s.%s' % (
model_state.app_label,
model_state.name_lower,
)
self.old_model_keys.remove((rem_app_label, rem_model_name))
self.old_model_keys.add((app_label, model_name))
break
def generate_created_models(self):
"""
Find all new models (both managed and unmanaged) and make create
operations for them as well as separate operations to create any
foreign key or M2M relationships (these are optimized later, if
possible).
Defer any model options that refer to collections of fields that might
be deferred (e.g. unique_together, index_together).
"""
old_keys = self.old_model_keys | self.old_unmanaged_keys
added_models = self.new_model_keys - old_keys
added_unmanaged_models = self.new_unmanaged_keys - old_keys
all_added_models = chain(
sorted(added_models, key=self.swappable_first_key, reverse=True),
sorted(added_unmanaged_models, key=self.swappable_first_key, reverse=True)
)
for app_label, model_name in all_added_models:
model_state = self.to_state.models[app_label, model_name]
# Gather related fields
related_fields = {}
primary_key_rel = None
for field_name, field in model_state.fields.items():
if field.remote_field:
if field.remote_field.model:
if field.primary_key:
primary_key_rel = field.remote_field.model
elif not field.remote_field.parent_link:
related_fields[field_name] = field
if getattr(field.remote_field, 'through', None):
related_fields[field_name] = field
# Are there indexes/unique|index_together to defer?
indexes = model_state.options.pop('indexes')
constraints = model_state.options.pop('constraints')
unique_together = model_state.options.pop('unique_together', None)
index_together = model_state.options.pop('index_together', None)
order_with_respect_to = model_state.options.pop('order_with_respect_to', None)
# Depend on the deletion of any possible proxy version of us
dependencies = [
(app_label, model_name, None, False),
]
# Depend on all bases
for base in model_state.bases:
if isinstance(base, str) and "." in base:
base_app_label, base_name = base.split(".", 1)
dependencies.append((base_app_label, base_name, None, True))
# Depend on the removal of base fields if the new model has
# a field with the same name.
old_base_model_state = self.from_state.models.get((base_app_label, base_name))
new_base_model_state = self.to_state.models.get((base_app_label, base_name))
if old_base_model_state and new_base_model_state:
removed_base_fields = set(old_base_model_state.fields).difference(
new_base_model_state.fields,
).intersection(model_state.fields)
for removed_base_field in removed_base_fields:
dependencies.append((base_app_label, base_name, removed_base_field, False))
# Depend on the other end of the primary key if it's a relation
if primary_key_rel:
dependencies.append(
resolve_relation(
primary_key_rel, app_label, model_name,
) + (None, True)
)
# Generate creation operation
self.add_operation(
app_label,
operations.CreateModel(
name=model_state.name,
fields=[d for d in model_state.fields.items() if d[0] not in related_fields],
options=model_state.options,
bases=model_state.bases,
managers=model_state.managers,
),
dependencies=dependencies,
beginning=True,
)
# Don't add operations which modify the database for unmanaged models
if not model_state.options.get('managed', True):
continue
# Generate operations for each related field
for name, field in sorted(related_fields.items()):
dependencies = self._get_dependencies_for_foreign_key(
app_label, model_name, field, self.to_state,
)
# Depend on our own model being created
dependencies.append((app_label, model_name, None, True))
# Make operation
self.add_operation(
app_label,
operations.AddField(
model_name=model_name,
name=name,
field=field,
),
dependencies=list(set(dependencies)),
)
# Generate other opns
if order_with_respect_to:
self.add_operation(
app_label,
operations.AlterOrderWithRespectTo(
name=model_name,
order_with_respect_to=order_with_respect_to,
),
dependencies=[
(app_label, model_name, order_with_respect_to, True),
(app_label, model_name, None, True),
]
)
related_dependencies = [
(app_label, model_name, name, True)
for name in sorted(related_fields)
]
related_dependencies.append((app_label, model_name, None, True))
for index in indexes:
self.add_operation(
app_label,
operations.AddIndex(
model_name=model_name,
index=index,
),
dependencies=related_dependencies,
)
for constraint in constraints:
self.add_operation(
app_label,
operations.AddConstraint(
model_name=model_name,
constraint=constraint,
),
dependencies=related_dependencies,
)
if unique_together:
self.add_operation(
app_label,
operations.AlterUniqueTogether(
name=model_name,
unique_together=unique_together,
),
dependencies=related_dependencies
)
if index_together:
self.add_operation(
app_label,
operations.AlterIndexTogether(
name=model_name,
index_together=index_together,
),
dependencies=related_dependencies
)
# Fix relationships if the model changed from a proxy model to a
# concrete model.
relations = self.to_state.relations
if (app_label, model_name) in self.old_proxy_keys:
for related_model_key, related_fields in relations[app_label, model_name].items():
related_model_state = self.to_state.models[related_model_key]
for related_field_name, related_field in related_fields.items():
self.add_operation(
related_model_state.app_label,
operations.AlterField(
model_name=related_model_state.name,
name=related_field_name,
field=related_field,
),
dependencies=[(app_label, model_name, None, True)],
)
def generate_created_proxies(self):
"""
Make CreateModel statements for proxy models. Use the same statements
as that way there's less code duplication, but for proxy models it's
safe to skip all the pointless field stuff and chuck out an operation.
"""
added = self.new_proxy_keys - self.old_proxy_keys
for app_label, model_name in sorted(added):
model_state = self.to_state.models[app_label, model_name]
assert model_state.options.get("proxy")
# Depend on the deletion of any possible non-proxy version of us
dependencies = [
(app_label, model_name, None, False),
]
# Depend on all bases
for base in model_state.bases:
if isinstance(base, str) and "." in base:
base_app_label, base_name = base.split(".", 1)
dependencies.append((base_app_label, base_name, None, True))
# Generate creation operation
self.add_operation(
app_label,
operations.CreateModel(
name=model_state.name,
fields=[],
options=model_state.options,
bases=model_state.bases,
managers=model_state.managers,
),
# Depend on the deletion of any possible non-proxy version of us
dependencies=dependencies,
)
def generate_deleted_models(self):
"""
Find all deleted models (managed and unmanaged) and make delete
operations for them as well as separate operations to delete any
foreign key or M2M relationships (these are optimized later, if
possible).
Also bring forward removal of any model options that refer to
collections of fields - the inverse of generate_created_models().
"""
new_keys = self.new_model_keys | self.new_unmanaged_keys
deleted_models = self.old_model_keys - new_keys
deleted_unmanaged_models = self.old_unmanaged_keys - new_keys
all_deleted_models = chain(sorted(deleted_models), sorted(deleted_unmanaged_models))
for app_label, model_name in all_deleted_models:
model_state = self.from_state.models[app_label, model_name]
# Gather related fields
related_fields = {}
for field_name, field in model_state.fields.items():
if field.remote_field:
if field.remote_field.model:
related_fields[field_name] = field
if getattr(field.remote_field, 'through', None):
related_fields[field_name] = field
# Generate option removal first
unique_together = model_state.options.pop('unique_together', None)
index_together = model_state.options.pop('index_together', None)
if unique_together:
self.add_operation(
app_label,
operations.AlterUniqueTogether(
name=model_name,
unique_together=None,
)
)
if index_together:
self.add_operation(
app_label,
operations.AlterIndexTogether(
name=model_name,
index_together=None,
)
)
# Then remove each related field
for name in sorted(related_fields):
self.add_operation(
app_label,
operations.RemoveField(
model_name=model_name,
name=name,
)
)
# Finally, remove the model.
# This depends on both the removal/alteration of all incoming fields
# and the removal of all its own related fields, and if it's
# a through model the field that references it.
dependencies = []
relations = self.from_state.relations
for (related_object_app_label, object_name), relation_related_fields in (
relations[app_label, model_name].items()
):
for field_name, field in relation_related_fields.items():
dependencies.append(
(related_object_app_label, object_name, field_name, False),
)
if not field.many_to_many:
dependencies.append(
(related_object_app_label, object_name, field_name, 'alter'),
)
for name in sorted(related_fields):
dependencies.append((app_label, model_name, name, False))
# We're referenced in another field's through=
through_user = self.through_users.get((app_label, model_state.name_lower))
if through_user:
dependencies.append((through_user[0], through_user[1], through_user[2], False))
# Finally, make the operation, deduping any dependencies
self.add_operation(
app_label,
operations.DeleteModel(
name=model_state.name,
),
dependencies=list(set(dependencies)),
)
def generate_deleted_proxies(self):
"""Make DeleteModel options for proxy models."""
deleted = self.old_proxy_keys - self.new_proxy_keys
for app_label, model_name in sorted(deleted):
model_state = self.from_state.models[app_label, model_name]
assert model_state.options.get("proxy")
self.add_operation(
app_label,
operations.DeleteModel(
name=model_state.name,
),
)
def generate_renamed_fields(self):
"""Work out renamed fields."""
self.renamed_fields = {}
for app_label, model_name, field_name in sorted(self.new_field_keys - self.old_field_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, old_model_name]
field = new_model_state.get_field(field_name)
# Scan to see if this is actually a rename!
field_dec = self.deep_deconstruct(field)
for rem_app_label, rem_model_name, rem_field_name in sorted(self.old_field_keys - self.new_field_keys):
if rem_app_label == app_label and rem_model_name == model_name:
old_field = old_model_state.get_field(rem_field_name)
old_field_dec = self.deep_deconstruct(old_field)
if field.remote_field and field.remote_field.model and 'to' in old_field_dec[2]:
old_rel_to = old_field_dec[2]['to']
if old_rel_to in self.renamed_models_rel:
old_field_dec[2]['to'] = self.renamed_models_rel[old_rel_to]
old_field.set_attributes_from_name(rem_field_name)
old_db_column = old_field.get_attname_column()[1]
if (old_field_dec == field_dec or (
# Was the field renamed and db_column equal to the
# old field's column added?
old_field_dec[0:2] == field_dec[0:2] and
dict(old_field_dec[2], db_column=old_db_column) == field_dec[2])):
if self.questioner.ask_rename(model_name, rem_field_name, field_name, field):
# A db_column mismatch requires a prior noop
# AlterField for the subsequent RenameField to be a
# noop on attempts at preserving the old name.
if old_field.db_column != field.db_column:
altered_field = field.clone()
altered_field.name = rem_field_name
self.add_operation(
app_label,
operations.AlterField(
model_name=model_name,
name=rem_field_name,
field=altered_field,
),
)
self.add_operation(
app_label,
operations.RenameField(
model_name=model_name,
old_name=rem_field_name,
new_name=field_name,
)
)
self.old_field_keys.remove((rem_app_label, rem_model_name, rem_field_name))
self.old_field_keys.add((app_label, model_name, field_name))
self.renamed_fields[app_label, model_name, field_name] = rem_field_name
break
def generate_added_fields(self):
"""Make AddField operations."""
for app_label, model_name, field_name in sorted(self.new_field_keys - self.old_field_keys):
self._generate_added_field(app_label, model_name, field_name)
def _generate_added_field(self, app_label, model_name, field_name):
field = self.to_state.models[app_label, model_name].get_field(field_name)
# Fields that are foreignkeys/m2ms depend on stuff
dependencies = []
if field.remote_field and field.remote_field.model:
dependencies.extend(self._get_dependencies_for_foreign_key(
app_label, model_name, field, self.to_state,
))
# You can't just add NOT NULL fields with no default or fields
# which don't allow empty strings as default.
time_fields = (models.DateField, models.DateTimeField, models.TimeField)
preserve_default = (
field.null or field.has_default() or field.many_to_many or
(field.blank and field.empty_strings_allowed) or
(isinstance(field, time_fields) and field.auto_now)
)
if not preserve_default:
field = field.clone()
if isinstance(field, time_fields) and field.auto_now_add:
field.default = self.questioner.ask_auto_now_add_addition(field_name, model_name)
else:
field.default = self.questioner.ask_not_null_addition(field_name, model_name)
if (
field.unique and
field.default is not models.NOT_PROVIDED and
callable(field.default)
):
self.questioner.ask_unique_callable_default_addition(field_name, model_name)
self.add_operation(
app_label,
operations.AddField(
model_name=model_name,
name=field_name,
field=field,
preserve_default=preserve_default,
),
dependencies=dependencies,
)
def generate_removed_fields(self):
"""Make RemoveField operations."""
for app_label, model_name, field_name in sorted(self.old_field_keys - self.new_field_keys):
self._generate_removed_field(app_label, model_name, field_name)
def _generate_removed_field(self, app_label, model_name, field_name):
self.add_operation(
app_label,
operations.RemoveField(
model_name=model_name,
name=field_name,
),
# We might need to depend on the removal of an
# order_with_respect_to or index/unique_together operation;
# this is safely ignored if there isn't one
dependencies=[
(app_label, model_name, field_name, "order_wrt_unset"),
(app_label, model_name, field_name, "foo_together_change"),
],
)
def generate_altered_fields(self):
"""
Make AlterField operations, or possibly RemovedField/AddField if alter
isn't possible.
"""
for app_label, model_name, field_name in sorted(self.old_field_keys & self.new_field_keys):
# Did the field change?
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_field_name = self.renamed_fields.get((app_label, model_name, field_name), field_name)
old_field = self.from_state.models[app_label, old_model_name].get_field(old_field_name)
new_field = self.to_state.models[app_label, model_name].get_field(field_name)
dependencies = []
# Implement any model renames on relations; these are handled by RenameModel
# so we need to exclude them from the comparison
if hasattr(new_field, "remote_field") and getattr(new_field.remote_field, "model", None):
rename_key = resolve_relation(new_field.remote_field.model, app_label, model_name)
if rename_key in self.renamed_models:
new_field.remote_field.model = old_field.remote_field.model
# Handle ForeignKey which can only have a single to_field.
remote_field_name = getattr(new_field.remote_field, 'field_name', None)
if remote_field_name:
to_field_rename_key = rename_key + (remote_field_name,)
if to_field_rename_key in self.renamed_fields:
# Repoint both model and field name because to_field
# inclusion in ForeignKey.deconstruct() is based on
# both.
new_field.remote_field.model = old_field.remote_field.model
new_field.remote_field.field_name = old_field.remote_field.field_name
# Handle ForeignObjects which can have multiple from_fields/to_fields.
from_fields = getattr(new_field, 'from_fields', None)
if from_fields:
from_rename_key = (app_label, model_name)
new_field.from_fields = tuple([
self.renamed_fields.get(from_rename_key + (from_field,), from_field)
for from_field in from_fields
])
new_field.to_fields = tuple([
self.renamed_fields.get(rename_key + (to_field,), to_field)
for to_field in new_field.to_fields
])
dependencies.extend(self._get_dependencies_for_foreign_key(
app_label, model_name, new_field, self.to_state,
))
if (
hasattr(new_field, 'remote_field') and
getattr(new_field.remote_field, 'through', None)
):
rename_key = resolve_relation(new_field.remote_field.through, app_label, model_name)
if rename_key in self.renamed_models:
new_field.remote_field.through = old_field.remote_field.through
old_field_dec = self.deep_deconstruct(old_field)
new_field_dec = self.deep_deconstruct(new_field)
# If the field was confirmed to be renamed it means that only
# db_column was allowed to change which generate_renamed_fields()
# already accounts for by adding an AlterField operation.
if old_field_dec != new_field_dec and old_field_name == field_name:
both_m2m = old_field.many_to_many and new_field.many_to_many
neither_m2m = not old_field.many_to_many and not new_field.many_to_many
if both_m2m or neither_m2m:
# Either both fields are m2m or neither is
preserve_default = True
if (old_field.null and not new_field.null and not new_field.has_default() and
not new_field.many_to_many):
field = new_field.clone()
new_default = self.questioner.ask_not_null_alteration(field_name, model_name)
if new_default is not models.NOT_PROVIDED:
field.default = new_default
preserve_default = False
else:
field = new_field
self.add_operation(
app_label,
operations.AlterField(
model_name=model_name,
name=field_name,
field=field,
preserve_default=preserve_default,
),
dependencies=dependencies,
)
else:
# We cannot alter between m2m and concrete fields
self._generate_removed_field(app_label, model_name, field_name)
self._generate_added_field(app_label, model_name, field_name)
def create_altered_indexes(self):
option_name = operations.AddIndex.option_name
for app_label, model_name in sorted(self.kept_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
old_indexes = old_model_state.options[option_name]
new_indexes = new_model_state.options[option_name]
add_idx = [idx for idx in new_indexes if idx not in old_indexes]
rem_idx = [idx for idx in old_indexes if idx not in new_indexes]
self.altered_indexes.update({
(app_label, model_name): {
'added_indexes': add_idx, 'removed_indexes': rem_idx,
}
})
def generate_added_indexes(self):
for (app_label, model_name), alt_indexes in self.altered_indexes.items():
for index in alt_indexes['added_indexes']:
self.add_operation(
app_label,
operations.AddIndex(
model_name=model_name,
index=index,
)
)
def generate_removed_indexes(self):
for (app_label, model_name), alt_indexes in self.altered_indexes.items():
for index in alt_indexes['removed_indexes']:
self.add_operation(
app_label,
operations.RemoveIndex(
model_name=model_name,
name=index.name,
)
)
def create_altered_constraints(self):
option_name = operations.AddConstraint.option_name
for app_label, model_name in sorted(self.kept_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
old_constraints = old_model_state.options[option_name]
new_constraints = new_model_state.options[option_name]
add_constraints = [c for c in new_constraints if c not in old_constraints]
rem_constraints = [c for c in old_constraints if c not in new_constraints]
self.altered_constraints.update({
(app_label, model_name): {
'added_constraints': add_constraints, 'removed_constraints': rem_constraints,
}
})
def generate_added_constraints(self):
for (app_label, model_name), alt_constraints in self.altered_constraints.items():
for constraint in alt_constraints['added_constraints']:
self.add_operation(
app_label,
operations.AddConstraint(
model_name=model_name,
constraint=constraint,
)
)
def generate_removed_constraints(self):
for (app_label, model_name), alt_constraints in self.altered_constraints.items():
for constraint in alt_constraints['removed_constraints']:
self.add_operation(
app_label,
operations.RemoveConstraint(
model_name=model_name,
name=constraint.name,
)
)
@staticmethod
def _get_dependencies_for_foreign_key(app_label, model_name, field, project_state):
remote_field_model = None
if hasattr(field.remote_field, 'model'):
remote_field_model = field.remote_field.model
else:
relations = project_state.relations[app_label, model_name]
for (remote_app_label, remote_model_name), fields in relations.items():
if any(
field == related_field.remote_field
for related_field in fields.values()
):
remote_field_model = f'{remote_app_label}.{remote_model_name}'
break
# Account for FKs to swappable models
swappable_setting = getattr(field, 'swappable_setting', None)
if swappable_setting is not None:
dep_app_label = "__setting__"
dep_object_name = swappable_setting
else:
dep_app_label, dep_object_name = resolve_relation(
remote_field_model, app_label, model_name,
)
dependencies = [(dep_app_label, dep_object_name, None, True)]
if getattr(field.remote_field, 'through', None):
through_app_label, through_object_name = resolve_relation(
remote_field_model, app_label, model_name,
)
dependencies.append((through_app_label, through_object_name, None, True))
return dependencies
def _get_altered_foo_together_operations(self, option_name):
for app_label, model_name in sorted(self.kept_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
# We run the old version through the field renames to account for those
old_value = old_model_state.options.get(option_name)
old_value = {
tuple(
self.renamed_fields.get((app_label, model_name, n), n)
for n in unique
)
for unique in old_value
} if old_value else set()
new_value = new_model_state.options.get(option_name)
new_value = set(new_value) if new_value else set()
if old_value != new_value:
dependencies = []
for foo_togethers in new_value:
for field_name in foo_togethers:
field = new_model_state.get_field(field_name)
if field.remote_field and field.remote_field.model:
dependencies.extend(self._get_dependencies_for_foreign_key(
app_label, model_name, field, self.to_state,
))
yield (
old_value,
new_value,
app_label,
model_name,
dependencies,
)
def _generate_removed_altered_foo_together(self, operation):
for (
old_value,
new_value,
app_label,
model_name,
dependencies,
) in self._get_altered_foo_together_operations(operation.option_name):
removal_value = new_value.intersection(old_value)
if removal_value or old_value:
self.add_operation(
app_label,
operation(name=model_name, **{operation.option_name: removal_value}),
dependencies=dependencies,
)
def generate_removed_altered_unique_together(self):
self._generate_removed_altered_foo_together(operations.AlterUniqueTogether)
def generate_removed_altered_index_together(self):
self._generate_removed_altered_foo_together(operations.AlterIndexTogether)
def _generate_altered_foo_together(self, operation):
for (
old_value,
new_value,
app_label,
model_name,
dependencies,
) in self._get_altered_foo_together_operations(operation.option_name):
removal_value = new_value.intersection(old_value)
if new_value != removal_value:
self.add_operation(
app_label,
operation(name=model_name, **{operation.option_name: new_value}),
dependencies=dependencies,
)
def generate_altered_unique_together(self):
self._generate_altered_foo_together(operations.AlterUniqueTogether)
def generate_altered_index_together(self):
self._generate_altered_foo_together(operations.AlterIndexTogether)
def generate_altered_db_table(self):
models_to_check = self.kept_model_keys.union(self.kept_proxy_keys, self.kept_unmanaged_keys)
for app_label, model_name in sorted(models_to_check):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
old_db_table_name = old_model_state.options.get('db_table')
new_db_table_name = new_model_state.options.get('db_table')
if old_db_table_name != new_db_table_name:
self.add_operation(
app_label,
operations.AlterModelTable(
name=model_name,
table=new_db_table_name,
)
)
def generate_altered_options(self):
"""
Work out if any non-schema-affecting options have changed and make an
operation to represent them in state changes (in case Python code in
migrations needs them).
"""
models_to_check = self.kept_model_keys.union(
self.kept_proxy_keys,
self.kept_unmanaged_keys,
# unmanaged converted to managed
self.old_unmanaged_keys & self.new_model_keys,
# managed converted to unmanaged
self.old_model_keys & self.new_unmanaged_keys,
)
for app_label, model_name in sorted(models_to_check):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
old_options = {
key: value for key, value in old_model_state.options.items()
if key in AlterModelOptions.ALTER_OPTION_KEYS
}
new_options = {
key: value for key, value in new_model_state.options.items()
if key in AlterModelOptions.ALTER_OPTION_KEYS
}
if old_options != new_options:
self.add_operation(
app_label,
operations.AlterModelOptions(
name=model_name,
options=new_options,
)
)
def generate_altered_order_with_respect_to(self):
for app_label, model_name in sorted(self.kept_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
if (old_model_state.options.get("order_with_respect_to") !=
new_model_state.options.get("order_with_respect_to")):
# Make sure it comes second if we're adding
# (removal dependency is part of RemoveField)
dependencies = []
if new_model_state.options.get("order_with_respect_to"):
dependencies.append((
app_label,
model_name,
new_model_state.options["order_with_respect_to"],
True,
))
# Actually generate the operation
self.add_operation(
app_label,
operations.AlterOrderWithRespectTo(
name=model_name,
order_with_respect_to=new_model_state.options.get('order_with_respect_to'),
),
dependencies=dependencies,
)
def generate_altered_managers(self):
for app_label, model_name in sorted(self.kept_model_keys):
old_model_name = self.renamed_models.get((app_label, model_name), model_name)
old_model_state = self.from_state.models[app_label, old_model_name]
new_model_state = self.to_state.models[app_label, model_name]
if old_model_state.managers != new_model_state.managers:
self.add_operation(
app_label,
operations.AlterModelManagers(
name=model_name,
managers=new_model_state.managers,
)
)
def arrange_for_graph(self, changes, graph, migration_name=None):
"""
Take a result from changes() and a MigrationGraph, and fix the names
and dependencies of the changes so they extend the graph from the leaf
nodes for each app.
"""
leaves = graph.leaf_nodes()
name_map = {}
for app_label, migrations in list(changes.items()):
if not migrations:
continue
# Find the app label's current leaf node
app_leaf = None
for leaf in leaves:
if leaf[0] == app_label:
app_leaf = leaf
break
# Do they want an initial migration for this app?
if app_leaf is None and not self.questioner.ask_initial(app_label):
# They don't.
for migration in migrations:
name_map[(app_label, migration.name)] = (app_label, "__first__")
del changes[app_label]
continue
# Work out the next number in the sequence
if app_leaf is None:
next_number = 1
else:
next_number = (self.parse_number(app_leaf[1]) or 0) + 1
# Name each migration
for i, migration in enumerate(migrations):
if i == 0 and app_leaf:
migration.dependencies.append(app_leaf)
new_name_parts = ['%04i' % next_number]
if migration_name:
new_name_parts.append(migration_name)
elif i == 0 and not app_leaf:
new_name_parts.append('initial')
else:
new_name_parts.append(migration.suggest_name()[:100])
new_name = '_'.join(new_name_parts)
name_map[(app_label, migration.name)] = (app_label, new_name)
next_number += 1
migration.name = new_name
# Now fix dependencies
for migrations in changes.values():
for migration in migrations:
migration.dependencies = [name_map.get(d, d) for d in migration.dependencies]
return changes
def _trim_to_apps(self, changes, app_labels):
"""
Take changes from arrange_for_graph() and set of app labels, and return
a modified set of changes which trims out as many migrations that are
not in app_labels as possible. Note that some other migrations may
still be present as they may be required dependencies.
"""
# Gather other app dependencies in a first pass
app_dependencies = {}
for app_label, migrations in changes.items():
for migration in migrations:
for dep_app_label, name in migration.dependencies:
app_dependencies.setdefault(app_label, set()).add(dep_app_label)
required_apps = set(app_labels)
# Keep resolving till there's no change
old_required_apps = None
while old_required_apps != required_apps:
old_required_apps = set(required_apps)
required_apps.update(*[app_dependencies.get(app_label, ()) for app_label in required_apps])
# Remove all migrations that aren't needed
for app_label in list(changes):
if app_label not in required_apps:
del changes[app_label]
return changes
@classmethod
def parse_number(cls, name):
"""
Given a migration name, try to extract a number from the beginning of
it. For a squashed migration such as '0001_squashed_0004…', return the
second number. If no number is found, return None.
"""
if squashed_match := re.search(r'.*_squashed_(\d+)', name):
return int(squashed_match[1])
match = re.match(r'^\d+', name)
if match:
return int(match[0])
return None
|
b1fbc5cc1dd667442f665bc4990372af94991da469689f74b3df9dfbfc07056a | import copy
import datetime
import functools
import inspect
from decimal import Decimal
from uuid import UUID
from django.core.exceptions import EmptyResultSet, FieldError
from django.db import DatabaseError, NotSupportedError, connection
from django.db.models import fields
from django.db.models.constants import LOOKUP_SEP
from django.db.models.query_utils import Q
from django.utils.deconstruct import deconstructible
from django.utils.functional import cached_property
from django.utils.hashable import make_hashable
class SQLiteNumericMixin:
"""
Some expressions with output_field=DecimalField() must be cast to
numeric to be properly filtered.
"""
def as_sqlite(self, compiler, connection, **extra_context):
sql, params = self.as_sql(compiler, connection, **extra_context)
try:
if self.output_field.get_internal_type() == 'DecimalField':
sql = 'CAST(%s AS NUMERIC)' % sql
except FieldError:
pass
return sql, params
class Combinable:
"""
Provide the ability to combine one or two objects with
some connector. For example F('foo') + F('bar').
"""
# Arithmetic connectors
ADD = '+'
SUB = '-'
MUL = '*'
DIV = '/'
POW = '^'
# The following is a quoted % operator - it is quoted because it can be
# used in strings that also have parameter substitution.
MOD = '%%'
# Bitwise operators - note that these are generated by .bitand()
# and .bitor(), the '&' and '|' are reserved for boolean operator
# usage.
BITAND = '&'
BITOR = '|'
BITLEFTSHIFT = '<<'
BITRIGHTSHIFT = '>>'
BITXOR = '#'
def _combine(self, other, connector, reversed):
if not hasattr(other, 'resolve_expression'):
# everything must be resolvable to an expression
other = Value(other)
if reversed:
return CombinedExpression(other, connector, self)
return CombinedExpression(self, connector, other)
#############
# OPERATORS #
#############
def __neg__(self):
return self._combine(-1, self.MUL, False)
def __add__(self, other):
return self._combine(other, self.ADD, False)
def __sub__(self, other):
return self._combine(other, self.SUB, False)
def __mul__(self, other):
return self._combine(other, self.MUL, False)
def __truediv__(self, other):
return self._combine(other, self.DIV, False)
def __mod__(self, other):
return self._combine(other, self.MOD, False)
def __pow__(self, other):
return self._combine(other, self.POW, False)
def __and__(self, other):
if getattr(self, 'conditional', False) and getattr(other, 'conditional', False):
return Q(self) & Q(other)
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def bitand(self, other):
return self._combine(other, self.BITAND, False)
def bitleftshift(self, other):
return self._combine(other, self.BITLEFTSHIFT, False)
def bitrightshift(self, other):
return self._combine(other, self.BITRIGHTSHIFT, False)
def bitxor(self, other):
return self._combine(other, self.BITXOR, False)
def __or__(self, other):
if getattr(self, 'conditional', False) and getattr(other, 'conditional', False):
return Q(self) | Q(other)
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def bitor(self, other):
return self._combine(other, self.BITOR, False)
def __radd__(self, other):
return self._combine(other, self.ADD, True)
def __rsub__(self, other):
return self._combine(other, self.SUB, True)
def __rmul__(self, other):
return self._combine(other, self.MUL, True)
def __rtruediv__(self, other):
return self._combine(other, self.DIV, True)
def __rmod__(self, other):
return self._combine(other, self.MOD, True)
def __rpow__(self, other):
return self._combine(other, self.POW, True)
def __rand__(self, other):
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def __ror__(self, other):
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
class BaseExpression:
"""Base class for all query expressions."""
empty_result_set_value = NotImplemented
# aggregate specific fields
is_summary = False
_output_field_resolved_to_none = False
# Can the expression be used in a WHERE clause?
filterable = True
# Can the expression can be used as a source expression in Window?
window_compatible = False
def __init__(self, output_field=None):
if output_field is not None:
self.output_field = output_field
def __getstate__(self):
state = self.__dict__.copy()
state.pop('convert_value', None)
return state
def get_db_converters(self, connection):
return (
[]
if self.convert_value is self._convert_value_noop else
[self.convert_value]
) + self.output_field.get_db_converters(connection)
def get_source_expressions(self):
return []
def set_source_expressions(self, exprs):
assert not exprs
def _parse_expressions(self, *expressions):
return [
arg if hasattr(arg, 'resolve_expression') else (
F(arg) if isinstance(arg, str) else Value(arg)
) for arg in expressions
]
def as_sql(self, compiler, connection):
"""
Responsible for returning a (sql, [params]) tuple to be included
in the current query.
Different backends can provide their own implementation, by
providing an `as_{vendor}` method and patching the Expression:
```
def override_as_sql(self, compiler, connection):
# custom logic
return super().as_sql(compiler, connection)
setattr(Expression, 'as_' + connection.vendor, override_as_sql)
```
Arguments:
* compiler: the query compiler responsible for generating the query.
Must have a compile method, returning a (sql, [params]) tuple.
Calling compiler(value) will return a quoted `value`.
* connection: the database connection used for the current query.
Return: (sql, params)
Where `sql` is a string containing ordered sql parameters to be
replaced with the elements of the list `params`.
"""
raise NotImplementedError("Subclasses must implement as_sql()")
@cached_property
def contains_aggregate(self):
return any(expr and expr.contains_aggregate for expr in self.get_source_expressions())
@cached_property
def contains_over_clause(self):
return any(expr and expr.contains_over_clause for expr in self.get_source_expressions())
@cached_property
def contains_column_references(self):
return any(expr and expr.contains_column_references for expr in self.get_source_expressions())
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
"""
Provide the chance to do any preprocessing or validation before being
added to the query.
Arguments:
* query: the backend query implementation
* allow_joins: boolean allowing or denying use of joins
in this query
* reuse: a set of reusable joins for multijoins
* summarize: a terminal aggregate clause
* for_save: whether this expression about to be used in a save or update
Return: an Expression to be added to the query.
"""
c = self.copy()
c.is_summary = summarize
c.set_source_expressions([
expr.resolve_expression(query, allow_joins, reuse, summarize)
if expr else None
for expr in c.get_source_expressions()
])
return c
@property
def conditional(self):
return isinstance(self.output_field, fields.BooleanField)
@property
def field(self):
return self.output_field
@cached_property
def output_field(self):
"""Return the output type of this expressions."""
output_field = self._resolve_output_field()
if output_field is None:
self._output_field_resolved_to_none = True
raise FieldError('Cannot resolve expression type, unknown output_field')
return output_field
@cached_property
def _output_field_or_none(self):
"""
Return the output field of this expression, or None if
_resolve_output_field() didn't return an output type.
"""
try:
return self.output_field
except FieldError:
if not self._output_field_resolved_to_none:
raise
def _resolve_output_field(self):
"""
Attempt to infer the output type of the expression. If the output
fields of all source fields match then, simply infer the same type
here. This isn't always correct, but it makes sense most of the time.
Consider the difference between `2 + 2` and `2 / 3`. Inferring
the type here is a convenience for the common case. The user should
supply their own output_field with more complex computations.
If a source's output field resolves to None, exclude it from this check.
If all sources are None, then an error is raised higher up the stack in
the output_field property.
"""
sources_iter = (source for source in self.get_source_fields() if source is not None)
for output_field in sources_iter:
for source in sources_iter:
if not isinstance(output_field, source.__class__):
raise FieldError(
'Expression contains mixed types: %s, %s. You must '
'set output_field.' % (
output_field.__class__.__name__,
source.__class__.__name__,
)
)
return output_field
@staticmethod
def _convert_value_noop(value, expression, connection):
return value
@cached_property
def convert_value(self):
"""
Expressions provide their own converters because users have the option
of manually specifying the output_field which may be a different type
from the one the database returns.
"""
field = self.output_field
internal_type = field.get_internal_type()
if internal_type == 'FloatField':
return lambda value, expression, connection: None if value is None else float(value)
elif internal_type.endswith('IntegerField'):
return lambda value, expression, connection: None if value is None else int(value)
elif internal_type == 'DecimalField':
return lambda value, expression, connection: None if value is None else Decimal(value)
return self._convert_value_noop
def get_lookup(self, lookup):
return self.output_field.get_lookup(lookup)
def get_transform(self, name):
return self.output_field.get_transform(name)
def relabeled_clone(self, change_map):
clone = self.copy()
clone.set_source_expressions([
e.relabeled_clone(change_map) if e is not None else None
for e in self.get_source_expressions()
])
return clone
def copy(self):
return copy.copy(self)
def get_group_by_cols(self, alias=None):
if not self.contains_aggregate:
return [self]
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
def get_source_fields(self):
"""Return the underlying field types used by this aggregate."""
return [e._output_field_or_none for e in self.get_source_expressions()]
def asc(self, **kwargs):
return OrderBy(self, **kwargs)
def desc(self, **kwargs):
return OrderBy(self, descending=True, **kwargs)
def reverse_ordering(self):
return self
def flatten(self):
"""
Recursively yield this expression and all subexpressions, in
depth-first order.
"""
yield self
for expr in self.get_source_expressions():
if expr:
if hasattr(expr, 'flatten'):
yield from expr.flatten()
else:
yield expr
def select_format(self, compiler, sql, params):
"""
Custom format for select clauses. For example, EXISTS expressions need
to be wrapped in CASE WHEN on Oracle.
"""
if hasattr(self.output_field, 'select_format'):
return self.output_field.select_format(compiler, sql, params)
return sql, params
@deconstructible
class Expression(BaseExpression, Combinable):
"""An expression that can be combined with other expressions."""
@cached_property
def identity(self):
constructor_signature = inspect.signature(self.__init__)
args, kwargs = self._constructor_args
signature = constructor_signature.bind_partial(*args, **kwargs)
signature.apply_defaults()
arguments = signature.arguments.items()
identity = [self.__class__]
for arg, value in arguments:
if isinstance(value, fields.Field):
if value.name and value.model:
value = (value.model._meta.label, value.name)
else:
value = type(value)
else:
value = make_hashable(value)
identity.append((arg, value))
return tuple(identity)
def __eq__(self, other):
if not isinstance(other, Expression):
return NotImplemented
return other.identity == self.identity
def __hash__(self):
return hash(self.identity)
_connector_combinators = {
connector: [
(fields.IntegerField, fields.IntegerField, fields.IntegerField),
(fields.IntegerField, fields.DecimalField, fields.DecimalField),
(fields.DecimalField, fields.IntegerField, fields.DecimalField),
(fields.IntegerField, fields.FloatField, fields.FloatField),
(fields.FloatField, fields.IntegerField, fields.FloatField),
]
for connector in (Combinable.ADD, Combinable.SUB, Combinable.MUL, Combinable.DIV)
}
@functools.lru_cache(maxsize=128)
def _resolve_combined_type(connector, lhs_type, rhs_type):
combinators = _connector_combinators.get(connector, ())
for combinator_lhs_type, combinator_rhs_type, combined_type in combinators:
if issubclass(lhs_type, combinator_lhs_type) and issubclass(rhs_type, combinator_rhs_type):
return combined_type
class CombinedExpression(SQLiteNumericMixin, Expression):
def __init__(self, lhs, connector, rhs, output_field=None):
super().__init__(output_field=output_field)
self.connector = connector
self.lhs = lhs
self.rhs = rhs
def __repr__(self):
return "<{}: {}>".format(self.__class__.__name__, self)
def __str__(self):
return "{} {} {}".format(self.lhs, self.connector, self.rhs)
def get_source_expressions(self):
return [self.lhs, self.rhs]
def set_source_expressions(self, exprs):
self.lhs, self.rhs = exprs
def _resolve_output_field(self):
try:
return super()._resolve_output_field()
except FieldError:
combined_type = _resolve_combined_type(
self.connector,
type(self.lhs.output_field),
type(self.rhs.output_field),
)
if combined_type is None:
raise
return combined_type()
def as_sql(self, compiler, connection):
expressions = []
expression_params = []
sql, params = compiler.compile(self.lhs)
expressions.append(sql)
expression_params.extend(params)
sql, params = compiler.compile(self.rhs)
expressions.append(sql)
expression_params.extend(params)
# order of precedence
expression_wrapper = '(%s)'
sql = connection.ops.combine_expression(self.connector, expressions)
return expression_wrapper % sql, expression_params
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
lhs = self.lhs.resolve_expression(query, allow_joins, reuse, summarize, for_save)
rhs = self.rhs.resolve_expression(query, allow_joins, reuse, summarize, for_save)
if not isinstance(self, (DurationExpression, TemporalSubtraction)):
try:
lhs_type = lhs.output_field.get_internal_type()
except (AttributeError, FieldError):
lhs_type = None
try:
rhs_type = rhs.output_field.get_internal_type()
except (AttributeError, FieldError):
rhs_type = None
if 'DurationField' in {lhs_type, rhs_type} and lhs_type != rhs_type:
return DurationExpression(self.lhs, self.connector, self.rhs).resolve_expression(
query, allow_joins, reuse, summarize, for_save,
)
datetime_fields = {'DateField', 'DateTimeField', 'TimeField'}
if self.connector == self.SUB and lhs_type in datetime_fields and lhs_type == rhs_type:
return TemporalSubtraction(self.lhs, self.rhs).resolve_expression(
query, allow_joins, reuse, summarize, for_save,
)
c = self.copy()
c.is_summary = summarize
c.lhs = lhs
c.rhs = rhs
return c
class DurationExpression(CombinedExpression):
def compile(self, side, compiler, connection):
try:
output = side.output_field
except FieldError:
pass
else:
if output.get_internal_type() == 'DurationField':
sql, params = compiler.compile(side)
return connection.ops.format_for_duration_arithmetic(sql), params
return compiler.compile(side)
def as_sql(self, compiler, connection):
if connection.features.has_native_duration_field:
return super().as_sql(compiler, connection)
connection.ops.check_expression_support(self)
expressions = []
expression_params = []
sql, params = self.compile(self.lhs, compiler, connection)
expressions.append(sql)
expression_params.extend(params)
sql, params = self.compile(self.rhs, compiler, connection)
expressions.append(sql)
expression_params.extend(params)
# order of precedence
expression_wrapper = '(%s)'
sql = connection.ops.combine_duration_expression(self.connector, expressions)
return expression_wrapper % sql, expression_params
def as_sqlite(self, compiler, connection, **extra_context):
sql, params = self.as_sql(compiler, connection, **extra_context)
if self.connector in {Combinable.MUL, Combinable.DIV}:
try:
lhs_type = self.lhs.output_field.get_internal_type()
rhs_type = self.rhs.output_field.get_internal_type()
except (AttributeError, FieldError):
pass
else:
allowed_fields = {
'DecimalField', 'DurationField', 'FloatField', 'IntegerField',
}
if lhs_type not in allowed_fields or rhs_type not in allowed_fields:
raise DatabaseError(
f'Invalid arguments for operator {self.connector}.'
)
return sql, params
class TemporalSubtraction(CombinedExpression):
output_field = fields.DurationField()
def __init__(self, lhs, rhs):
super().__init__(lhs, self.SUB, rhs)
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
lhs = compiler.compile(self.lhs)
rhs = compiler.compile(self.rhs)
return connection.ops.subtract_temporals(self.lhs.output_field.get_internal_type(), lhs, rhs)
@deconstructible(path='django.db.models.F')
class F(Combinable):
"""An object capable of resolving references to existing query objects."""
def __init__(self, name):
"""
Arguments:
* name: the name of the field this expression references
"""
self.name = name
def __repr__(self):
return "{}({})".format(self.__class__.__name__, self.name)
def resolve_expression(self, query=None, allow_joins=True, reuse=None,
summarize=False, for_save=False):
return query.resolve_ref(self.name, allow_joins, reuse, summarize)
def asc(self, **kwargs):
return OrderBy(self, **kwargs)
def desc(self, **kwargs):
return OrderBy(self, descending=True, **kwargs)
def __eq__(self, other):
return self.__class__ == other.__class__ and self.name == other.name
def __hash__(self):
return hash(self.name)
class ResolvedOuterRef(F):
"""
An object that contains a reference to an outer query.
In this case, the reference to the outer query has been resolved because
the inner query has been used as a subquery.
"""
contains_aggregate = False
def as_sql(self, *args, **kwargs):
raise ValueError(
'This queryset contains a reference to an outer query and may '
'only be used in a subquery.'
)
def resolve_expression(self, *args, **kwargs):
col = super().resolve_expression(*args, **kwargs)
# FIXME: Rename possibly_multivalued to multivalued and fix detection
# for non-multivalued JOINs (e.g. foreign key fields). This should take
# into account only many-to-many and one-to-many relationships.
col.possibly_multivalued = LOOKUP_SEP in self.name
return col
def relabeled_clone(self, relabels):
return self
def get_group_by_cols(self, alias=None):
return []
class OuterRef(F):
contains_aggregate = False
def resolve_expression(self, *args, **kwargs):
if isinstance(self.name, self.__class__):
return self.name
return ResolvedOuterRef(self.name)
def relabeled_clone(self, relabels):
return self
class Func(SQLiteNumericMixin, Expression):
"""An SQL function call."""
function = None
template = '%(function)s(%(expressions)s)'
arg_joiner = ', '
arity = None # The number of arguments the function accepts.
def __init__(self, *expressions, output_field=None, **extra):
if self.arity is not None and len(expressions) != self.arity:
raise TypeError(
"'%s' takes exactly %s %s (%s given)" % (
self.__class__.__name__,
self.arity,
"argument" if self.arity == 1 else "arguments",
len(expressions),
)
)
super().__init__(output_field=output_field)
self.source_expressions = self._parse_expressions(*expressions)
self.extra = extra
def __repr__(self):
args = self.arg_joiner.join(str(arg) for arg in self.source_expressions)
extra = {**self.extra, **self._get_repr_options()}
if extra:
extra = ', '.join(str(key) + '=' + str(val) for key, val in sorted(extra.items()))
return "{}({}, {})".format(self.__class__.__name__, args, extra)
return "{}({})".format(self.__class__.__name__, args)
def _get_repr_options(self):
"""Return a dict of extra __init__() options to include in the repr."""
return {}
def get_source_expressions(self):
return self.source_expressions
def set_source_expressions(self, exprs):
self.source_expressions = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
for pos, arg in enumerate(c.source_expressions):
c.source_expressions[pos] = arg.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def as_sql(self, compiler, connection, function=None, template=None, arg_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
sql_parts = []
params = []
for arg in self.source_expressions:
try:
arg_sql, arg_params = compiler.compile(arg)
except EmptyResultSet:
empty_result_set_value = getattr(arg, 'empty_result_set_value', NotImplemented)
if empty_result_set_value is NotImplemented:
raise
arg_sql, arg_params = compiler.compile(Value(empty_result_set_value))
sql_parts.append(arg_sql)
params.extend(arg_params)
data = {**self.extra, **extra_context}
# Use the first supplied value in this order: the parameter to this
# method, a value supplied in __init__()'s **extra (the value in
# `data`), or the value defined on the class.
if function is not None:
data['function'] = function
else:
data.setdefault('function', self.function)
template = template or data.get('template', self.template)
arg_joiner = arg_joiner or data.get('arg_joiner', self.arg_joiner)
data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
return template % data, params
def copy(self):
copy = super().copy()
copy.source_expressions = self.source_expressions[:]
copy.extra = self.extra.copy()
return copy
class Value(SQLiteNumericMixin, Expression):
"""Represent a wrapped value as a node within an expression."""
# Provide a default value for `for_save` in order to allow unresolved
# instances to be compiled until a decision is taken in #25425.
for_save = False
def __init__(self, value, output_field=None):
"""
Arguments:
* value: the value this expression represents. The value will be
added into the sql parameter list and properly quoted.
* output_field: an instance of the model field type that this
expression will return, such as IntegerField() or CharField().
"""
super().__init__(output_field=output_field)
self.value = value
def __repr__(self):
return f'{self.__class__.__name__}({self.value!r})'
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
val = self.value
output_field = self._output_field_or_none
if output_field is not None:
if self.for_save:
val = output_field.get_db_prep_save(val, connection=connection)
else:
val = output_field.get_db_prep_value(val, connection=connection)
if hasattr(output_field, 'get_placeholder'):
return output_field.get_placeholder(val, compiler, connection), [val]
if val is None:
# cx_Oracle does not always convert None to the appropriate
# NULL type (like in case expressions using numbers), so we
# use a literal SQL NULL
return 'NULL', []
return '%s', [val]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
c.for_save = for_save
return c
def get_group_by_cols(self, alias=None):
return []
def _resolve_output_field(self):
if isinstance(self.value, str):
return fields.CharField()
if isinstance(self.value, bool):
return fields.BooleanField()
if isinstance(self.value, int):
return fields.IntegerField()
if isinstance(self.value, float):
return fields.FloatField()
if isinstance(self.value, datetime.datetime):
return fields.DateTimeField()
if isinstance(self.value, datetime.date):
return fields.DateField()
if isinstance(self.value, datetime.time):
return fields.TimeField()
if isinstance(self.value, datetime.timedelta):
return fields.DurationField()
if isinstance(self.value, Decimal):
return fields.DecimalField()
if isinstance(self.value, bytes):
return fields.BinaryField()
if isinstance(self.value, UUID):
return fields.UUIDField()
@property
def empty_result_set_value(self):
return self.value
class RawSQL(Expression):
def __init__(self, sql, params, output_field=None):
if output_field is None:
output_field = fields.Field()
self.sql, self.params = sql, params
super().__init__(output_field=output_field)
def __repr__(self):
return "{}({}, {})".format(self.__class__.__name__, self.sql, self.params)
def as_sql(self, compiler, connection):
return '(%s)' % self.sql, self.params
def get_group_by_cols(self, alias=None):
return [self]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
# Resolve parents fields used in raw SQL.
for parent in query.model._meta.get_parent_list():
for parent_field in parent._meta.local_fields:
_, column_name = parent_field.get_attname_column()
if column_name.lower() in self.sql.lower():
query.resolve_ref(parent_field.name, allow_joins, reuse, summarize)
break
return super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
class Star(Expression):
def __repr__(self):
return "'*'"
def as_sql(self, compiler, connection):
return '*', []
class Col(Expression):
contains_column_references = True
possibly_multivalued = False
def __init__(self, alias, target, output_field=None):
if output_field is None:
output_field = target
super().__init__(output_field=output_field)
self.alias, self.target = alias, target
def __repr__(self):
alias, target = self.alias, self.target
identifiers = (alias, str(target)) if alias else (str(target),)
return '{}({})'.format(self.__class__.__name__, ', '.join(identifiers))
def as_sql(self, compiler, connection):
alias, column = self.alias, self.target.column
identifiers = (alias, column) if alias else (column,)
sql = '.'.join(map(compiler.quote_name_unless_alias, identifiers))
return sql, []
def relabeled_clone(self, relabels):
if self.alias is None:
return self
return self.__class__(relabels.get(self.alias, self.alias), self.target, self.output_field)
def get_group_by_cols(self, alias=None):
return [self]
def get_db_converters(self, connection):
if self.target == self.output_field:
return self.output_field.get_db_converters(connection)
return (self.output_field.get_db_converters(connection) +
self.target.get_db_converters(connection))
class Ref(Expression):
"""
Reference to column alias of the query. For example, Ref('sum_cost') in
qs.annotate(sum_cost=Sum('cost')) query.
"""
def __init__(self, refs, source):
super().__init__()
self.refs, self.source = refs, source
def __repr__(self):
return "{}({}, {})".format(self.__class__.__name__, self.refs, self.source)
def get_source_expressions(self):
return [self.source]
def set_source_expressions(self, exprs):
self.source, = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
# The sub-expression `source` has already been resolved, as this is
# just a reference to the name of `source`.
return self
def relabeled_clone(self, relabels):
return self
def as_sql(self, compiler, connection):
return connection.ops.quote_name(self.refs), []
def get_group_by_cols(self, alias=None):
return [self]
class ExpressionList(Func):
"""
An expression containing multiple expressions. Can be used to provide a
list of expressions as an argument to another expression, like an
ordering clause.
"""
template = '%(expressions)s'
def __init__(self, *expressions, **extra):
if not expressions:
raise ValueError('%s requires at least one expression.' % self.__class__.__name__)
super().__init__(*expressions, **extra)
def __str__(self):
return self.arg_joiner.join(str(arg) for arg in self.source_expressions)
def as_sqlite(self, compiler, connection, **extra_context):
# Casting to numeric is unnecessary.
return self.as_sql(compiler, connection, **extra_context)
class ExpressionWrapper(Expression):
"""
An expression that can wrap another expression so that it can provide
extra context to the inner expression, such as the output_field.
"""
def __init__(self, expression, output_field):
super().__init__(output_field=output_field)
self.expression = expression
def set_source_expressions(self, exprs):
self.expression = exprs[0]
def get_source_expressions(self):
return [self.expression]
def get_group_by_cols(self, alias=None):
if isinstance(self.expression, Expression):
expression = self.expression.copy()
expression.output_field = self.output_field
return expression.get_group_by_cols(alias=alias)
# For non-expressions e.g. an SQL WHERE clause, the entire
# `expression` must be included in the GROUP BY clause.
return super().get_group_by_cols()
def as_sql(self, compiler, connection):
return compiler.compile(self.expression)
def __repr__(self):
return "{}({})".format(self.__class__.__name__, self.expression)
class When(Expression):
template = 'WHEN %(condition)s THEN %(result)s'
# This isn't a complete conditional expression, must be used in Case().
conditional = False
def __init__(self, condition=None, then=None, **lookups):
if lookups:
if condition is None:
condition, lookups = Q(**lookups), None
elif getattr(condition, 'conditional', False):
condition, lookups = Q(condition, **lookups), None
if condition is None or not getattr(condition, 'conditional', False) or lookups:
raise TypeError(
'When() supports a Q object, a boolean expression, or lookups '
'as a condition.'
)
if isinstance(condition, Q) and not condition:
raise ValueError("An empty Q() can't be used as a When() condition.")
super().__init__(output_field=None)
self.condition = condition
self.result = self._parse_expressions(then)[0]
def __str__(self):
return "WHEN %r THEN %r" % (self.condition, self.result)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
def get_source_expressions(self):
return [self.condition, self.result]
def set_source_expressions(self, exprs):
self.condition, self.result = exprs
def get_source_fields(self):
# We're only interested in the fields of the result expressions.
return [self.result._output_field_or_none]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
if hasattr(c.condition, 'resolve_expression'):
c.condition = c.condition.resolve_expression(query, allow_joins, reuse, summarize, False)
c.result = c.result.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def as_sql(self, compiler, connection, template=None, **extra_context):
connection.ops.check_expression_support(self)
template_params = extra_context
sql_params = []
condition_sql, condition_params = compiler.compile(self.condition)
template_params['condition'] = condition_sql
sql_params.extend(condition_params)
result_sql, result_params = compiler.compile(self.result)
template_params['result'] = result_sql
sql_params.extend(result_params)
template = template or self.template
return template % template_params, sql_params
def get_group_by_cols(self, alias=None):
# This is not a complete expression and cannot be used in GROUP BY.
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
class Case(Expression):
"""
An SQL searched CASE expression:
CASE
WHEN n > 0
THEN 'positive'
WHEN n < 0
THEN 'negative'
ELSE 'zero'
END
"""
template = 'CASE %(cases)s ELSE %(default)s END'
case_joiner = ' '
def __init__(self, *cases, default=None, output_field=None, **extra):
if not all(isinstance(case, When) for case in cases):
raise TypeError("Positional arguments must all be When objects.")
super().__init__(output_field)
self.cases = list(cases)
self.default = self._parse_expressions(default)[0]
self.extra = extra
def __str__(self):
return "CASE %s, ELSE %r" % (', '.join(str(c) for c in self.cases), self.default)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
def get_source_expressions(self):
return self.cases + [self.default]
def set_source_expressions(self, exprs):
*self.cases, self.default = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
for pos, case in enumerate(c.cases):
c.cases[pos] = case.resolve_expression(query, allow_joins, reuse, summarize, for_save)
c.default = c.default.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def copy(self):
c = super().copy()
c.cases = c.cases[:]
return c
def as_sql(self, compiler, connection, template=None, case_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
if not self.cases:
return compiler.compile(self.default)
template_params = {**self.extra, **extra_context}
case_parts = []
sql_params = []
for case in self.cases:
try:
case_sql, case_params = compiler.compile(case)
except EmptyResultSet:
continue
case_parts.append(case_sql)
sql_params.extend(case_params)
default_sql, default_params = compiler.compile(self.default)
if not case_parts:
return default_sql, default_params
case_joiner = case_joiner or self.case_joiner
template_params['cases'] = case_joiner.join(case_parts)
template_params['default'] = default_sql
sql_params.extend(default_params)
template = template or template_params.get('template', self.template)
sql = template % template_params
if self._output_field_or_none is not None:
sql = connection.ops.unification_cast_sql(self.output_field) % sql
return sql, sql_params
def get_group_by_cols(self, alias=None):
if not self.cases:
return self.default.get_group_by_cols(alias)
return super().get_group_by_cols(alias)
class Subquery(BaseExpression, Combinable):
"""
An explicit subquery. It may contain OuterRef() references to the outer
query which will be resolved when it is applied to that query.
"""
template = '(%(subquery)s)'
contains_aggregate = False
empty_result_set_value = None
def __init__(self, queryset, output_field=None, **extra):
# Allow the usage of both QuerySet and sql.Query objects.
self.query = getattr(queryset, 'query', queryset)
self.extra = extra
super().__init__(output_field)
def get_source_expressions(self):
return [self.query]
def set_source_expressions(self, exprs):
self.query = exprs[0]
def _resolve_output_field(self):
return self.query.output_field
def copy(self):
clone = super().copy()
clone.query = clone.query.clone()
return clone
@property
def external_aliases(self):
return self.query.external_aliases
def get_external_cols(self):
return self.query.get_external_cols()
def as_sql(self, compiler, connection, template=None, query=None, **extra_context):
connection.ops.check_expression_support(self)
template_params = {**self.extra, **extra_context}
query = query or self.query
subquery_sql, sql_params = query.as_sql(compiler, connection)
template_params['subquery'] = subquery_sql[1:-1]
template = template or template_params.get('template', self.template)
sql = template % template_params
return sql, sql_params
def get_group_by_cols(self, alias=None):
if alias:
return [Ref(alias, self)]
external_cols = self.get_external_cols()
if any(col.possibly_multivalued for col in external_cols):
return [self]
return external_cols
class Exists(Subquery):
template = 'EXISTS(%(subquery)s)'
output_field = fields.BooleanField()
def __init__(self, queryset, negated=False, **kwargs):
self.negated = negated
super().__init__(queryset, **kwargs)
def __invert__(self):
clone = self.copy()
clone.negated = not self.negated
return clone
def as_sql(self, compiler, connection, template=None, **extra_context):
query = self.query.exists(using=connection.alias)
sql, params = super().as_sql(
compiler,
connection,
template=template,
query=query,
**extra_context,
)
if self.negated:
sql = 'NOT {}'.format(sql)
return sql, params
def select_format(self, compiler, sql, params):
# Wrap EXISTS() with a CASE WHEN expression if a database backend
# (e.g. Oracle) doesn't support boolean expression in SELECT or GROUP
# BY list.
if not compiler.connection.features.supports_boolean_expr_in_select_clause:
sql = 'CASE WHEN {} THEN 1 ELSE 0 END'.format(sql)
return sql, params
class OrderBy(Expression):
template = '%(expression)s %(ordering)s'
conditional = False
def __init__(self, expression, descending=False, nulls_first=False, nulls_last=False):
if nulls_first and nulls_last:
raise ValueError('nulls_first and nulls_last are mutually exclusive')
self.nulls_first = nulls_first
self.nulls_last = nulls_last
self.descending = descending
if not hasattr(expression, 'resolve_expression'):
raise ValueError('expression must be an expression type')
self.expression = expression
def __repr__(self):
return "{}({}, descending={})".format(
self.__class__.__name__, self.expression, self.descending)
def set_source_expressions(self, exprs):
self.expression = exprs[0]
def get_source_expressions(self):
return [self.expression]
def as_sql(self, compiler, connection, template=None, **extra_context):
template = template or self.template
if connection.features.supports_order_by_nulls_modifier:
if self.nulls_last:
template = '%s NULLS LAST' % template
elif self.nulls_first:
template = '%s NULLS FIRST' % template
else:
if self.nulls_last and not (
self.descending and connection.features.order_by_nulls_first
):
template = '%%(expression)s IS NULL, %s' % template
elif self.nulls_first and not (
not self.descending and connection.features.order_by_nulls_first
):
template = '%%(expression)s IS NOT NULL, %s' % template
connection.ops.check_expression_support(self)
expression_sql, params = compiler.compile(self.expression)
placeholders = {
'expression': expression_sql,
'ordering': 'DESC' if self.descending else 'ASC',
**extra_context,
}
params *= template.count('%(expression)s')
return (template % placeholders).rstrip(), params
def as_oracle(self, compiler, connection):
# Oracle doesn't allow ORDER BY EXISTS() or filters unless it's wrapped
# in a CASE WHEN.
if connection.ops.conditional_expression_supported_in_where_clause(self.expression):
copy = self.copy()
copy.expression = Case(
When(self.expression, then=True),
default=False,
)
return copy.as_sql(compiler, connection)
return self.as_sql(compiler, connection)
def get_group_by_cols(self, alias=None):
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
def reverse_ordering(self):
self.descending = not self.descending
if self.nulls_first or self.nulls_last:
self.nulls_first = not self.nulls_first
self.nulls_last = not self.nulls_last
return self
def asc(self):
self.descending = False
def desc(self):
self.descending = True
class Window(SQLiteNumericMixin, Expression):
template = '%(expression)s OVER (%(window)s)'
# Although the main expression may either be an aggregate or an
# expression with an aggregate function, the GROUP BY that will
# be introduced in the query as a result is not desired.
contains_aggregate = False
contains_over_clause = True
filterable = False
def __init__(self, expression, partition_by=None, order_by=None, frame=None, output_field=None):
self.partition_by = partition_by
self.order_by = order_by
self.frame = frame
if not getattr(expression, 'window_compatible', False):
raise ValueError(
"Expression '%s' isn't compatible with OVER clauses." %
expression.__class__.__name__
)
if self.partition_by is not None:
if not isinstance(self.partition_by, (tuple, list)):
self.partition_by = (self.partition_by,)
self.partition_by = ExpressionList(*self.partition_by)
if self.order_by is not None:
if isinstance(self.order_by, (list, tuple)):
self.order_by = ExpressionList(*self.order_by)
elif not isinstance(self.order_by, BaseExpression):
raise ValueError(
'order_by must be either an Expression or a sequence of '
'expressions.'
)
super().__init__(output_field=output_field)
self.source_expression = self._parse_expressions(expression)[0]
def _resolve_output_field(self):
return self.source_expression.output_field
def get_source_expressions(self):
return [self.source_expression, self.partition_by, self.order_by, self.frame]
def set_source_expressions(self, exprs):
self.source_expression, self.partition_by, self.order_by, self.frame = exprs
def as_sql(self, compiler, connection, template=None):
connection.ops.check_expression_support(self)
if not connection.features.supports_over_clause:
raise NotSupportedError('This backend does not support window expressions.')
expr_sql, params = compiler.compile(self.source_expression)
window_sql, window_params = [], []
if self.partition_by is not None:
sql_expr, sql_params = self.partition_by.as_sql(
compiler=compiler, connection=connection,
template='PARTITION BY %(expressions)s',
)
window_sql.extend(sql_expr)
window_params.extend(sql_params)
if self.order_by is not None:
window_sql.append(' ORDER BY ')
order_sql, order_params = compiler.compile(self.order_by)
window_sql.extend(order_sql)
window_params.extend(order_params)
if self.frame:
frame_sql, frame_params = compiler.compile(self.frame)
window_sql.append(' ' + frame_sql)
window_params.extend(frame_params)
params.extend(window_params)
template = template or self.template
return template % {
'expression': expr_sql,
'window': ''.join(window_sql).strip()
}, params
def as_sqlite(self, compiler, connection):
if isinstance(self.output_field, fields.DecimalField):
# Casting to numeric must be outside of the window expression.
copy = self.copy()
source_expressions = copy.get_source_expressions()
source_expressions[0].output_field = fields.FloatField()
copy.set_source_expressions(source_expressions)
return super(Window, copy).as_sqlite(compiler, connection)
return self.as_sql(compiler, connection)
def __str__(self):
return '{} OVER ({}{}{})'.format(
str(self.source_expression),
'PARTITION BY ' + str(self.partition_by) if self.partition_by else '',
'ORDER BY ' + str(self.order_by) if self.order_by else '',
str(self.frame or ''),
)
def __repr__(self):
return '<%s: %s>' % (self.__class__.__name__, self)
def get_group_by_cols(self, alias=None):
return []
class WindowFrame(Expression):
"""
Model the frame clause in window expressions. There are two types of frame
clauses which are subclasses, however, all processing and validation (by no
means intended to be complete) is done here. Thus, providing an end for a
frame is optional (the default is UNBOUNDED FOLLOWING, which is the last
row in the frame).
"""
template = '%(frame_type)s BETWEEN %(start)s AND %(end)s'
def __init__(self, start=None, end=None):
self.start = Value(start)
self.end = Value(end)
def set_source_expressions(self, exprs):
self.start, self.end = exprs
def get_source_expressions(self):
return [self.start, self.end]
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
start, end = self.window_frame_start_end(connection, self.start.value, self.end.value)
return self.template % {
'frame_type': self.frame_type,
'start': start,
'end': end,
}, []
def __repr__(self):
return '<%s: %s>' % (self.__class__.__name__, self)
def get_group_by_cols(self, alias=None):
return []
def __str__(self):
if self.start.value is not None and self.start.value < 0:
start = '%d %s' % (abs(self.start.value), connection.ops.PRECEDING)
elif self.start.value is not None and self.start.value == 0:
start = connection.ops.CURRENT_ROW
else:
start = connection.ops.UNBOUNDED_PRECEDING
if self.end.value is not None and self.end.value > 0:
end = '%d %s' % (self.end.value, connection.ops.FOLLOWING)
elif self.end.value is not None and self.end.value == 0:
end = connection.ops.CURRENT_ROW
else:
end = connection.ops.UNBOUNDED_FOLLOWING
return self.template % {
'frame_type': self.frame_type,
'start': start,
'end': end,
}
def window_frame_start_end(self, connection, start, end):
raise NotImplementedError('Subclasses must implement window_frame_start_end().')
class RowRange(WindowFrame):
frame_type = 'ROWS'
def window_frame_start_end(self, connection, start, end):
return connection.ops.window_frame_rows_start_end(start, end)
class ValueRange(WindowFrame):
frame_type = 'RANGE'
def window_frame_start_end(self, connection, start, end):
return connection.ops.window_frame_range_start_end(start, end)
|
d416335a7dd68c4634b3c03b10800011ac9a5a37fcb7ecf3feaae85ecf53c876 | import datetime
import decimal
from importlib import import_module
import sqlparse
from django.conf import settings
from django.db import NotSupportedError, transaction
from django.db.backends import utils
from django.utils import timezone
from django.utils.encoding import force_str
class BaseDatabaseOperations:
"""
Encapsulate backend-specific differences, such as the way a backend
performs ordering or calculates the ID of a recently-inserted row.
"""
compiler_module = "django.db.models.sql.compiler"
# Integer field safe ranges by `internal_type` as documented
# in docs/ref/models/fields.txt.
integer_field_ranges = {
'SmallIntegerField': (-32768, 32767),
'IntegerField': (-2147483648, 2147483647),
'BigIntegerField': (-9223372036854775808, 9223372036854775807),
'PositiveBigIntegerField': (0, 9223372036854775807),
'PositiveSmallIntegerField': (0, 32767),
'PositiveIntegerField': (0, 2147483647),
'SmallAutoField': (-32768, 32767),
'AutoField': (-2147483648, 2147483647),
'BigAutoField': (-9223372036854775808, 9223372036854775807),
}
set_operators = {
'union': 'UNION',
'intersection': 'INTERSECT',
'difference': 'EXCEPT',
}
# Mapping of Field.get_internal_type() (typically the model field's class
# name) to the data type to use for the Cast() function, if different from
# DatabaseWrapper.data_types.
cast_data_types = {}
# CharField data type if the max_length argument isn't provided.
cast_char_field_without_max_length = None
# Start and end points for window expressions.
PRECEDING = 'PRECEDING'
FOLLOWING = 'FOLLOWING'
UNBOUNDED_PRECEDING = 'UNBOUNDED ' + PRECEDING
UNBOUNDED_FOLLOWING = 'UNBOUNDED ' + FOLLOWING
CURRENT_ROW = 'CURRENT ROW'
# Prefix for EXPLAIN queries, or None EXPLAIN isn't supported.
explain_prefix = None
def __init__(self, connection):
self.connection = connection
self._cache = None
def autoinc_sql(self, table, column):
"""
Return any SQL needed to support auto-incrementing primary keys, or
None if no SQL is necessary.
This SQL is executed when a table is created.
"""
return None
def bulk_batch_size(self, fields, objs):
"""
Return the maximum allowed batch size for the backend. The fields
are the fields going to be inserted in the batch, the objs contains
all the objects to be inserted.
"""
return len(objs)
def format_for_duration_arithmetic(self, sql):
raise NotImplementedError(
'subclasses of BaseDatabaseOperations may require a '
'format_for_duration_arithmetic() method.'
)
def cache_key_culling_sql(self):
"""
Return an SQL query that retrieves the first cache key greater than the
n smallest.
This is used by the 'db' cache backend to determine where to start
culling.
"""
return "SELECT cache_key FROM %s ORDER BY cache_key LIMIT 1 OFFSET %%s"
def unification_cast_sql(self, output_field):
"""
Given a field instance, return the SQL that casts the result of a union
to that type. The resulting string should contain a '%s' placeholder
for the expression being cast.
"""
return '%s'
def date_extract_sql(self, lookup_type, field_name):
"""
Given a lookup_type of 'year', 'month', or 'day', return the SQL that
extracts a value from the given date field field_name.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a date_extract_sql() method')
def date_trunc_sql(self, lookup_type, field_name, tzname=None):
"""
Given a lookup_type of 'year', 'month', or 'day', return the SQL that
truncates the given date or datetime field field_name to a date object
with only the given specificity.
If `tzname` is provided, the given value is truncated in a specific
timezone.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a date_trunc_sql() method.')
def datetime_cast_date_sql(self, field_name, tzname):
"""
Return the SQL to cast a datetime value to date value.
"""
raise NotImplementedError(
'subclasses of BaseDatabaseOperations may require a '
'datetime_cast_date_sql() method.'
)
def datetime_cast_time_sql(self, field_name, tzname):
"""
Return the SQL to cast a datetime value to time value.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_cast_time_sql() method')
def datetime_extract_sql(self, lookup_type, field_name, tzname):
"""
Given a lookup_type of 'year', 'month', 'day', 'hour', 'minute', or
'second', return the SQL that extracts a value from the given
datetime field field_name.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_extract_sql() method')
def datetime_trunc_sql(self, lookup_type, field_name, tzname):
"""
Given a lookup_type of 'year', 'month', 'day', 'hour', 'minute', or
'second', return the SQL that truncates the given datetime field
field_name to a datetime object with only the given specificity.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_trunc_sql() method')
def time_trunc_sql(self, lookup_type, field_name, tzname=None):
"""
Given a lookup_type of 'hour', 'minute' or 'second', return the SQL
that truncates the given time or datetime field field_name to a time
object with only the given specificity.
If `tzname` is provided, the given value is truncated in a specific
timezone.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a time_trunc_sql() method')
def time_extract_sql(self, lookup_type, field_name):
"""
Given a lookup_type of 'hour', 'minute', or 'second', return the SQL
that extracts a value from the given time field field_name.
"""
return self.date_extract_sql(lookup_type, field_name)
def deferrable_sql(self):
"""
Return the SQL to make a constraint "initially deferred" during a
CREATE TABLE statement.
"""
return ''
def distinct_sql(self, fields, params):
"""
Return an SQL DISTINCT clause which removes duplicate rows from the
result set. If any fields are given, only check the given fields for
duplicates.
"""
if fields:
raise NotSupportedError('DISTINCT ON fields is not supported by this database backend')
else:
return ['DISTINCT'], []
def fetch_returned_insert_columns(self, cursor, returning_params):
"""
Given a cursor object that has just performed an INSERT...RETURNING
statement into a table, return the newly created data.
"""
return cursor.fetchone()
def field_cast_sql(self, db_type, internal_type):
"""
Given a column type (e.g. 'BLOB', 'VARCHAR') and an internal type
(e.g. 'GenericIPAddressField'), return the SQL to cast it before using
it in a WHERE statement. The resulting string should contain a '%s'
placeholder for the column being searched against.
"""
return '%s'
def force_no_ordering(self):
"""
Return a list used in the "ORDER BY" clause to force no ordering at
all. Return an empty list to include nothing in the ordering.
"""
return []
def for_update_sql(self, nowait=False, skip_locked=False, of=(), no_key=False):
"""
Return the FOR UPDATE SQL clause to lock rows for an update operation.
"""
return 'FOR%s UPDATE%s%s%s' % (
' NO KEY' if no_key else '',
' OF %s' % ', '.join(of) if of else '',
' NOWAIT' if nowait else '',
' SKIP LOCKED' if skip_locked else '',
)
def _get_limit_offset_params(self, low_mark, high_mark):
offset = low_mark or 0
if high_mark is not None:
return (high_mark - offset), offset
elif offset:
return self.connection.ops.no_limit_value(), offset
return None, offset
def limit_offset_sql(self, low_mark, high_mark):
"""Return LIMIT/OFFSET SQL clause."""
limit, offset = self._get_limit_offset_params(low_mark, high_mark)
return ' '.join(sql for sql in (
('LIMIT %d' % limit) if limit else None,
('OFFSET %d' % offset) if offset else None,
) if sql)
def last_executed_query(self, cursor, sql, params):
"""
Return a string of the query last executed by the given cursor, with
placeholders replaced with actual values.
`sql` is the raw query containing placeholders and `params` is the
sequence of parameters. These are used by default, but this method
exists for database backends to provide a better implementation
according to their own quoting schemes.
"""
# Convert params to contain string values.
def to_string(s):
return force_str(s, strings_only=True, errors='replace')
if isinstance(params, (list, tuple)):
u_params = tuple(to_string(val) for val in params)
elif params is None:
u_params = ()
else:
u_params = {to_string(k): to_string(v) for k, v in params.items()}
return "QUERY = %r - PARAMS = %r" % (sql, u_params)
def last_insert_id(self, cursor, table_name, pk_name):
"""
Given a cursor object that has just performed an INSERT statement into
a table that has an auto-incrementing ID, return the newly created ID.
`pk_name` is the name of the primary-key column.
"""
return cursor.lastrowid
def lookup_cast(self, lookup_type, internal_type=None):
"""
Return the string to use in a query when performing lookups
("contains", "like", etc.). It should contain a '%s' placeholder for
the column being searched against.
"""
return "%s"
def max_in_list_size(self):
"""
Return the maximum number of items that can be passed in a single 'IN'
list condition, or None if the backend does not impose a limit.
"""
return None
def max_name_length(self):
"""
Return the maximum length of table and column names, or None if there
is no limit.
"""
return None
def no_limit_value(self):
"""
Return the value to use for the LIMIT when we are wanting "LIMIT
infinity". Return None if the limit clause can be omitted in this case.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a no_limit_value() method')
def pk_default_value(self):
"""
Return the value to use during an INSERT statement to specify that
the field should use its default value.
"""
return 'DEFAULT'
def prepare_sql_script(self, sql):
"""
Take an SQL script that may contain multiple lines and return a list
of statements to feed to successive cursor.execute() calls.
Since few databases are able to process raw SQL scripts in a single
cursor.execute() call and PEP 249 doesn't talk about this use case,
the default implementation is conservative.
"""
return [
sqlparse.format(statement, strip_comments=True)
for statement in sqlparse.split(sql) if statement
]
def process_clob(self, value):
"""
Return the value of a CLOB column, for backends that return a locator
object that requires additional processing.
"""
return value
def return_insert_columns(self, fields):
"""
For backends that support returning columns as part of an insert query,
return the SQL and params to append to the INSERT query. The returned
fragment should contain a format string to hold the appropriate column.
"""
pass
def compiler(self, compiler_name):
"""
Return the SQLCompiler class corresponding to the given name,
in the namespace corresponding to the `compiler_module` attribute
on this backend.
"""
if self._cache is None:
self._cache = import_module(self.compiler_module)
return getattr(self._cache, compiler_name)
def quote_name(self, name):
"""
Return a quoted version of the given table, index, or column name. Do
not quote the given name if it's already been quoted.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a quote_name() method')
def regex_lookup(self, lookup_type):
"""
Return the string to use in a query when performing regular expression
lookups (using "regex" or "iregex"). It should contain a '%s'
placeholder for the column being searched against.
If the feature is not supported (or part of it is not supported), raise
NotImplementedError.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a regex_lookup() method')
def savepoint_create_sql(self, sid):
"""
Return the SQL for starting a new savepoint. Only required if the
"uses_savepoints" feature is True. The "sid" parameter is a string
for the savepoint id.
"""
return "SAVEPOINT %s" % self.quote_name(sid)
def savepoint_commit_sql(self, sid):
"""
Return the SQL for committing the given savepoint.
"""
return "RELEASE SAVEPOINT %s" % self.quote_name(sid)
def savepoint_rollback_sql(self, sid):
"""
Return the SQL for rolling back the given savepoint.
"""
return "ROLLBACK TO SAVEPOINT %s" % self.quote_name(sid)
def set_time_zone_sql(self):
"""
Return the SQL that will set the connection's time zone.
Return '' if the backend doesn't support time zones.
"""
return ''
def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
"""
Return a list of SQL statements required to remove all data from
the given database tables (without actually removing the tables
themselves).
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
If `reset_sequences` is True, the list includes SQL statements required
to reset the sequences.
The `allow_cascade` argument determines whether truncation may cascade
to tables with foreign keys pointing the tables being truncated.
PostgreSQL requires a cascade even if these tables are empty.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations must provide an sql_flush() method')
def execute_sql_flush(self, sql_list):
"""Execute a list of SQL statements to flush the database."""
with transaction.atomic(
using=self.connection.alias,
savepoint=self.connection.features.can_rollback_ddl,
):
with self.connection.cursor() as cursor:
for sql in sql_list:
cursor.execute(sql)
def sequence_reset_by_name_sql(self, style, sequences):
"""
Return a list of the SQL statements required to reset sequences
passed in `sequences`.
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
"""
return []
def sequence_reset_sql(self, style, model_list):
"""
Return a list of the SQL statements required to reset sequences for
the given models.
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
"""
return [] # No sequence reset required by default.
def start_transaction_sql(self):
"""Return the SQL statement required to start a transaction."""
return "BEGIN;"
def end_transaction_sql(self, success=True):
"""Return the SQL statement required to end a transaction."""
if not success:
return "ROLLBACK;"
return "COMMIT;"
def tablespace_sql(self, tablespace, inline=False):
"""
Return the SQL that will be used in a query to define the tablespace.
Return '' if the backend doesn't support tablespaces.
If `inline` is True, append the SQL to a row; otherwise append it to
the entire CREATE TABLE or CREATE INDEX statement.
"""
return ''
def prep_for_like_query(self, x):
"""Prepare a value for use in a LIKE query."""
return str(x).replace("\\", "\\\\").replace("%", r"\%").replace("_", r"\_")
# Same as prep_for_like_query(), but called for "iexact" matches, which
# need not necessarily be implemented using "LIKE" in the backend.
prep_for_iexact_query = prep_for_like_query
def validate_autopk_value(self, value):
"""
Certain backends do not accept some values for "serial" fields
(for example zero in MySQL). Raise a ValueError if the value is
invalid, otherwise return the validated value.
"""
return value
def adapt_unknown_value(self, value):
"""
Transform a value to something compatible with the backend driver.
This method only depends on the type of the value. It's designed for
cases where the target type isn't known, such as .raw() SQL queries.
As a consequence it may not work perfectly in all circumstances.
"""
if isinstance(value, datetime.datetime): # must be before date
return self.adapt_datetimefield_value(value)
elif isinstance(value, datetime.date):
return self.adapt_datefield_value(value)
elif isinstance(value, datetime.time):
return self.adapt_timefield_value(value)
elif isinstance(value, decimal.Decimal):
return self.adapt_decimalfield_value(value)
else:
return value
def adapt_datefield_value(self, value):
"""
Transform a date value to an object compatible with what is expected
by the backend driver for date columns.
"""
if value is None:
return None
return str(value)
def adapt_datetimefield_value(self, value):
"""
Transform a datetime value to an object compatible with what is expected
by the backend driver for datetime columns.
"""
if value is None:
return None
return str(value)
def adapt_timefield_value(self, value):
"""
Transform a time value to an object compatible with what is expected
by the backend driver for time columns.
"""
if value is None:
return None
if timezone.is_aware(value):
raise ValueError("Django does not support timezone-aware times.")
return str(value)
def adapt_decimalfield_value(self, value, max_digits=None, decimal_places=None):
"""
Transform a decimal.Decimal value to an object compatible with what is
expected by the backend driver for decimal (numeric) columns.
"""
return utils.format_number(value, max_digits, decimal_places)
def adapt_ipaddressfield_value(self, value):
"""
Transform a string representation of an IP address into the expected
type for the backend driver.
"""
return value or None
def year_lookup_bounds_for_date_field(self, value, iso_year=False):
"""
Return a two-elements list with the lower and upper bound to be used
with a BETWEEN operator to query a DateField value using a year
lookup.
`value` is an int, containing the looked-up year.
If `iso_year` is True, return bounds for ISO-8601 week-numbering years.
"""
if iso_year:
first = datetime.date.fromisocalendar(value, 1, 1)
second = (
datetime.date.fromisocalendar(value + 1, 1, 1) -
datetime.timedelta(days=1)
)
else:
first = datetime.date(value, 1, 1)
second = datetime.date(value, 12, 31)
first = self.adapt_datefield_value(first)
second = self.adapt_datefield_value(second)
return [first, second]
def year_lookup_bounds_for_datetime_field(self, value, iso_year=False):
"""
Return a two-elements list with the lower and upper bound to be used
with a BETWEEN operator to query a DateTimeField value using a year
lookup.
`value` is an int, containing the looked-up year.
If `iso_year` is True, return bounds for ISO-8601 week-numbering years.
"""
if iso_year:
first = datetime.datetime.fromisocalendar(value, 1, 1)
second = (
datetime.datetime.fromisocalendar(value + 1, 1, 1) -
datetime.timedelta(microseconds=1)
)
else:
first = datetime.datetime(value, 1, 1)
second = datetime.datetime(value, 12, 31, 23, 59, 59, 999999)
if settings.USE_TZ:
tz = timezone.get_current_timezone()
first = timezone.make_aware(first, tz)
second = timezone.make_aware(second, tz)
first = self.adapt_datetimefield_value(first)
second = self.adapt_datetimefield_value(second)
return [first, second]
def get_db_converters(self, expression):
"""
Return a list of functions needed to convert field data.
Some field types on some backends do not provide data in the correct
format, this is the hook for converter functions.
"""
return []
def convert_durationfield_value(self, value, expression, connection):
if value is not None:
return datetime.timedelta(0, 0, value)
def check_expression_support(self, expression):
"""
Check that the backend supports the provided expression.
This is used on specific backends to rule out known expressions
that have problematic or nonexistent implementations. If the
expression has a known problem, the backend should raise
NotSupportedError.
"""
pass
def conditional_expression_supported_in_where_clause(self, expression):
"""
Return True, if the conditional expression is supported in the WHERE
clause.
"""
return True
def combine_expression(self, connector, sub_expressions):
"""
Combine a list of subexpressions into a single expression, using
the provided connecting operator. This is required because operators
can vary between backends (e.g., Oracle with %% and &) and between
subexpression types (e.g., date expressions).
"""
conn = ' %s ' % connector
return conn.join(sub_expressions)
def combine_duration_expression(self, connector, sub_expressions):
return self.combine_expression(connector, sub_expressions)
def binary_placeholder_sql(self, value):
"""
Some backends require special syntax to insert binary content (MySQL
for example uses '_binary %s').
"""
return '%s'
def modify_insert_params(self, placeholder, params):
"""
Allow modification of insert parameters. Needed for Oracle Spatial
backend due to #10888.
"""
return params
def integer_field_range(self, internal_type):
"""
Given an integer field internal type (e.g. 'PositiveIntegerField'),
return a tuple of the (min_value, max_value) form representing the
range of the column type bound to the field.
"""
return self.integer_field_ranges[internal_type]
def subtract_temporals(self, internal_type, lhs, rhs):
if self.connection.features.supports_temporal_subtraction:
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
return '(%s - %s)' % (lhs_sql, rhs_sql), (*lhs_params, *rhs_params)
raise NotSupportedError("This backend does not support %s subtraction." % internal_type)
def window_frame_start(self, start):
if isinstance(start, int):
if start < 0:
return '%d %s' % (abs(start), self.PRECEDING)
elif start == 0:
return self.CURRENT_ROW
elif start is None:
return self.UNBOUNDED_PRECEDING
raise ValueError("start argument must be a negative integer, zero, or None, but got '%s'." % start)
def window_frame_end(self, end):
if isinstance(end, int):
if end == 0:
return self.CURRENT_ROW
elif end > 0:
return '%d %s' % (end, self.FOLLOWING)
elif end is None:
return self.UNBOUNDED_FOLLOWING
raise ValueError("end argument must be a positive integer, zero, or None, but got '%s'." % end)
def window_frame_rows_start_end(self, start=None, end=None):
"""
Return SQL for start and end points in an OVER clause window frame.
"""
if not self.connection.features.supports_over_clause:
raise NotSupportedError('This backend does not support window expressions.')
return self.window_frame_start(start), self.window_frame_end(end)
def window_frame_range_start_end(self, start=None, end=None):
start_, end_ = self.window_frame_rows_start_end(start, end)
if (
self.connection.features.only_supports_unbounded_with_preceding_and_following and
((start and start < 0) or (end and end > 0))
):
raise NotSupportedError(
'%s only supports UNBOUNDED together with PRECEDING and '
'FOLLOWING.' % self.connection.display_name
)
return start_, end_
def explain_query_prefix(self, format=None, **options):
if not self.connection.features.supports_explaining_query_execution:
raise NotSupportedError('This backend does not support explaining query execution.')
if format:
supported_formats = self.connection.features.supported_explain_formats
normalized_format = format.upper()
if normalized_format not in supported_formats:
msg = '%s is not a recognized format.' % normalized_format
if supported_formats:
msg += ' Allowed formats: %s' % ', '.join(sorted(supported_formats))
raise ValueError(msg)
if options:
raise ValueError('Unknown options: %s' % ', '.join(sorted(options.keys())))
return self.explain_prefix
def insert_statement(self, ignore_conflicts=False):
return 'INSERT INTO'
def ignore_conflicts_suffix_sql(self, ignore_conflicts=None):
return ''
|
320e6144cc6c92405b33c157aeca5b3f3396b96823b92f8541ae0a4a2bdc76b9 | import re
from collections import namedtuple
import sqlparse
from django.db.backends.base.introspection import (
BaseDatabaseIntrospection, FieldInfo as BaseFieldInfo, TableInfo,
)
from django.db.models import Index
from django.utils.regex_helper import _lazy_re_compile
FieldInfo = namedtuple('FieldInfo', BaseFieldInfo._fields + ('pk', 'has_json_constraint'))
field_size_re = _lazy_re_compile(r'^\s*(?:var)?char\s*\(\s*(\d+)\s*\)\s*$')
def get_field_size(name):
""" Extract the size number from a "varchar(11)" type name """
m = field_size_re.search(name)
return int(m[1]) if m else None
# This light wrapper "fakes" a dictionary interface, because some SQLite data
# types include variables in them -- e.g. "varchar(30)" -- and can't be matched
# as a simple dictionary lookup.
class FlexibleFieldLookupDict:
# Maps SQL types to Django Field types. Some of the SQL types have multiple
# entries here because SQLite allows for anything and doesn't normalize the
# field type; it uses whatever was given.
base_data_types_reverse = {
'bool': 'BooleanField',
'boolean': 'BooleanField',
'smallint': 'SmallIntegerField',
'smallint unsigned': 'PositiveSmallIntegerField',
'smallinteger': 'SmallIntegerField',
'int': 'IntegerField',
'integer': 'IntegerField',
'bigint': 'BigIntegerField',
'integer unsigned': 'PositiveIntegerField',
'bigint unsigned': 'PositiveBigIntegerField',
'decimal': 'DecimalField',
'real': 'FloatField',
'text': 'TextField',
'char': 'CharField',
'varchar': 'CharField',
'blob': 'BinaryField',
'date': 'DateField',
'datetime': 'DateTimeField',
'time': 'TimeField',
}
def __getitem__(self, key):
key = key.lower().split('(', 1)[0].strip()
return self.base_data_types_reverse[key]
class DatabaseIntrospection(BaseDatabaseIntrospection):
data_types_reverse = FlexibleFieldLookupDict()
def get_field_type(self, data_type, description):
field_type = super().get_field_type(data_type, description)
if description.pk and field_type in {'BigIntegerField', 'IntegerField', 'SmallIntegerField'}:
# No support for BigAutoField or SmallAutoField as SQLite treats
# all integer primary keys as signed 64-bit integers.
return 'AutoField'
if description.has_json_constraint:
return 'JSONField'
return field_type
def get_table_list(self, cursor):
"""Return a list of table and view names in the current database."""
# Skip the sqlite_sequence system table used for autoincrement key
# generation.
cursor.execute("""
SELECT name, type FROM sqlite_master
WHERE type in ('table', 'view') AND NOT name='sqlite_sequence'
ORDER BY name""")
return [TableInfo(row[0], row[1][0]) for row in cursor.fetchall()]
def get_table_description(self, cursor, table_name):
"""
Return a description of the table with the DB-API cursor.description
interface.
"""
cursor.execute('PRAGMA table_info(%s)' % self.connection.ops.quote_name(table_name))
table_info = cursor.fetchall()
collations = self._get_column_collations(cursor, table_name)
json_columns = set()
if self.connection.features.can_introspect_json_field:
for line in table_info:
column = line[1]
json_constraint_sql = '%%json_valid("%s")%%' % column
has_json_constraint = cursor.execute("""
SELECT sql
FROM sqlite_master
WHERE
type = 'table' AND
name = %s AND
sql LIKE %s
""", [table_name, json_constraint_sql]).fetchone()
if has_json_constraint:
json_columns.add(column)
return [
FieldInfo(
name, data_type, None, get_field_size(data_type), None, None,
not notnull, default, collations.get(name), pk == 1, name in json_columns
)
for cid, name, data_type, notnull, default, pk in table_info
]
def get_sequences(self, cursor, table_name, table_fields=()):
pk_col = self.get_primary_key_column(cursor, table_name)
return [{'table': table_name, 'column': pk_col}]
def get_relations(self, cursor, table_name):
"""
Return a dictionary of {field_name: (field_name_other_table, other_table)}
representing all relationships to the given table.
"""
# Dictionary of relations to return
relations = {}
# Schema for this table
cursor.execute(
"SELECT sql, type FROM sqlite_master "
"WHERE tbl_name = %s AND type IN ('table', 'view')",
[table_name]
)
create_sql, table_type = cursor.fetchone()
if table_type == 'view':
# It might be a view, then no results will be returned
return relations
results = create_sql[create_sql.index('(') + 1:create_sql.rindex(')')]
# Walk through and look for references to other tables. SQLite doesn't
# really have enforced references, but since it echoes out the SQL used
# to create the table we can look for REFERENCES statements used there.
for field_desc in results.split(','):
field_desc = field_desc.strip()
if field_desc.startswith("UNIQUE"):
continue
m = re.search(r'references (\S*) ?\(["|]?(.*)["|]?\)', field_desc, re.I)
if not m:
continue
table, column = [s.strip('"') for s in m.groups()]
if field_desc.startswith("FOREIGN KEY"):
# Find name of the target FK field
m = re.match(r'FOREIGN KEY\s*\(([^\)]*)\).*', field_desc, re.I)
field_name = m[1].strip('"')
else:
field_name = field_desc.split()[0].strip('"')
cursor.execute("SELECT sql FROM sqlite_master WHERE tbl_name = %s", [table])
result = cursor.fetchall()[0]
other_table_results = result[0].strip()
li, ri = other_table_results.index('('), other_table_results.rindex(')')
other_table_results = other_table_results[li + 1:ri]
for other_desc in other_table_results.split(','):
other_desc = other_desc.strip()
if other_desc.startswith('UNIQUE'):
continue
other_name = other_desc.split(' ', 1)[0].strip('"')
if other_name == column:
relations[field_name] = (other_name, table)
break
return relations
def get_key_columns(self, cursor, table_name):
"""
Return a list of (column_name, referenced_table_name, referenced_column_name)
for all key columns in given table.
"""
key_columns = []
# Schema for this table
cursor.execute("SELECT sql FROM sqlite_master WHERE tbl_name = %s AND type = %s", [table_name, "table"])
results = cursor.fetchone()[0].strip()
results = results[results.index('(') + 1:results.rindex(')')]
# Walk through and look for references to other tables. SQLite doesn't
# really have enforced references, but since it echoes out the SQL used
# to create the table we can look for REFERENCES statements used there.
for field_index, field_desc in enumerate(results.split(',')):
field_desc = field_desc.strip()
if field_desc.startswith("UNIQUE"):
continue
m = re.search(r'"(.*)".*references (.*) \(["|](.*)["|]\)', field_desc, re.I)
if not m:
continue
# This will append (column_name, referenced_table_name, referenced_column_name) to key_columns
key_columns.append(tuple(s.strip('"') for s in m.groups()))
return key_columns
def get_primary_key_column(self, cursor, table_name):
"""Return the column name of the primary key for the given table."""
cursor.execute(
'PRAGMA table_info(%s)' % self.connection.ops.quote_name(table_name)
)
for _, name, *_, pk in cursor.fetchall():
if pk:
return name
return None
def _get_foreign_key_constraints(self, cursor, table_name):
constraints = {}
cursor.execute('PRAGMA foreign_key_list(%s)' % self.connection.ops.quote_name(table_name))
for row in cursor.fetchall():
# Remaining on_update/on_delete/match values are of no interest.
id_, _, table, from_, to = row[:5]
constraints['fk_%d' % id_] = {
'columns': [from_],
'primary_key': False,
'unique': False,
'foreign_key': (table, to),
'check': False,
'index': False,
}
return constraints
def _parse_column_or_constraint_definition(self, tokens, columns):
token = None
is_constraint_definition = None
field_name = None
constraint_name = None
unique = False
unique_columns = []
check = False
check_columns = []
braces_deep = 0
for token in tokens:
if token.match(sqlparse.tokens.Punctuation, '('):
braces_deep += 1
elif token.match(sqlparse.tokens.Punctuation, ')'):
braces_deep -= 1
if braces_deep < 0:
# End of columns and constraints for table definition.
break
elif braces_deep == 0 and token.match(sqlparse.tokens.Punctuation, ','):
# End of current column or constraint definition.
break
# Detect column or constraint definition by first token.
if is_constraint_definition is None:
is_constraint_definition = token.match(sqlparse.tokens.Keyword, 'CONSTRAINT')
if is_constraint_definition:
continue
if is_constraint_definition:
# Detect constraint name by second token.
if constraint_name is None:
if token.ttype in (sqlparse.tokens.Name, sqlparse.tokens.Keyword):
constraint_name = token.value
elif token.ttype == sqlparse.tokens.Literal.String.Symbol:
constraint_name = token.value[1:-1]
# Start constraint columns parsing after UNIQUE keyword.
if token.match(sqlparse.tokens.Keyword, 'UNIQUE'):
unique = True
unique_braces_deep = braces_deep
elif unique:
if unique_braces_deep == braces_deep:
if unique_columns:
# Stop constraint parsing.
unique = False
continue
if token.ttype in (sqlparse.tokens.Name, sqlparse.tokens.Keyword):
unique_columns.append(token.value)
elif token.ttype == sqlparse.tokens.Literal.String.Symbol:
unique_columns.append(token.value[1:-1])
else:
# Detect field name by first token.
if field_name is None:
if token.ttype in (sqlparse.tokens.Name, sqlparse.tokens.Keyword):
field_name = token.value
elif token.ttype == sqlparse.tokens.Literal.String.Symbol:
field_name = token.value[1:-1]
if token.match(sqlparse.tokens.Keyword, 'UNIQUE'):
unique_columns = [field_name]
# Start constraint columns parsing after CHECK keyword.
if token.match(sqlparse.tokens.Keyword, 'CHECK'):
check = True
check_braces_deep = braces_deep
elif check:
if check_braces_deep == braces_deep:
if check_columns:
# Stop constraint parsing.
check = False
continue
if token.ttype in (sqlparse.tokens.Name, sqlparse.tokens.Keyword):
if token.value in columns:
check_columns.append(token.value)
elif token.ttype == sqlparse.tokens.Literal.String.Symbol:
if token.value[1:-1] in columns:
check_columns.append(token.value[1:-1])
unique_constraint = {
'unique': True,
'columns': unique_columns,
'primary_key': False,
'foreign_key': None,
'check': False,
'index': False,
} if unique_columns else None
check_constraint = {
'check': True,
'columns': check_columns,
'primary_key': False,
'unique': False,
'foreign_key': None,
'index': False,
} if check_columns else None
return constraint_name, unique_constraint, check_constraint, token
def _parse_table_constraints(self, sql, columns):
# Check constraint parsing is based of SQLite syntax diagram.
# https://www.sqlite.org/syntaxdiagrams.html#table-constraint
statement = sqlparse.parse(sql)[0]
constraints = {}
unnamed_constrains_index = 0
tokens = (token for token in statement.flatten() if not token.is_whitespace)
# Go to columns and constraint definition
for token in tokens:
if token.match(sqlparse.tokens.Punctuation, '('):
break
# Parse columns and constraint definition
while True:
constraint_name, unique, check, end_token = self._parse_column_or_constraint_definition(tokens, columns)
if unique:
if constraint_name:
constraints[constraint_name] = unique
else:
unnamed_constrains_index += 1
constraints['__unnamed_constraint_%s__' % unnamed_constrains_index] = unique
if check:
if constraint_name:
constraints[constraint_name] = check
else:
unnamed_constrains_index += 1
constraints['__unnamed_constraint_%s__' % unnamed_constrains_index] = check
if end_token.match(sqlparse.tokens.Punctuation, ')'):
break
return constraints
def get_constraints(self, cursor, table_name):
"""
Retrieve any constraints or keys (unique, pk, fk, check, index) across
one or more columns.
"""
constraints = {}
# Find inline check constraints.
try:
table_schema = cursor.execute(
"SELECT sql FROM sqlite_master WHERE type='table' and name=%s" % (
self.connection.ops.quote_name(table_name),
)
).fetchone()[0]
except TypeError:
# table_name is a view.
pass
else:
columns = {info.name for info in self.get_table_description(cursor, table_name)}
constraints.update(self._parse_table_constraints(table_schema, columns))
# Get the index info
cursor.execute("PRAGMA index_list(%s)" % self.connection.ops.quote_name(table_name))
for row in cursor.fetchall():
# SQLite 3.8.9+ has 5 columns, however older versions only give 3
# columns. Discard last 2 columns if there.
number, index, unique = row[:3]
cursor.execute(
"SELECT sql FROM sqlite_master "
"WHERE type='index' AND name=%s" % self.connection.ops.quote_name(index)
)
# There's at most one row.
sql, = cursor.fetchone() or (None,)
# Inline constraints are already detected in
# _parse_table_constraints(). The reasons to avoid fetching inline
# constraints from `PRAGMA index_list` are:
# - Inline constraints can have a different name and information
# than what `PRAGMA index_list` gives.
# - Not all inline constraints may appear in `PRAGMA index_list`.
if not sql:
# An inline constraint
continue
# Get the index info for that index
cursor.execute('PRAGMA index_info(%s)' % self.connection.ops.quote_name(index))
for index_rank, column_rank, column in cursor.fetchall():
if index not in constraints:
constraints[index] = {
"columns": [],
"primary_key": False,
"unique": bool(unique),
"foreign_key": None,
"check": False,
"index": True,
}
constraints[index]['columns'].append(column)
# Add type and column orders for indexes
if constraints[index]['index']:
# SQLite doesn't support any index type other than b-tree
constraints[index]['type'] = Index.suffix
orders = self._get_index_columns_orders(sql)
if orders is not None:
constraints[index]['orders'] = orders
# Get the PK
pk_column = self.get_primary_key_column(cursor, table_name)
if pk_column:
# SQLite doesn't actually give a name to the PK constraint,
# so we invent one. This is fine, as the SQLite backend never
# deletes PK constraints by name, as you can't delete constraints
# in SQLite; we remake the table with a new PK instead.
constraints["__primary__"] = {
"columns": [pk_column],
"primary_key": True,
"unique": False, # It's not actually a unique constraint.
"foreign_key": None,
"check": False,
"index": False,
}
constraints.update(self._get_foreign_key_constraints(cursor, table_name))
return constraints
def _get_index_columns_orders(self, sql):
tokens = sqlparse.parse(sql)[0]
for token in tokens:
if isinstance(token, sqlparse.sql.Parenthesis):
columns = str(token).strip('()').split(', ')
return ['DESC' if info.endswith('DESC') else 'ASC' for info in columns]
return None
def _get_column_collations(self, cursor, table_name):
row = cursor.execute("""
SELECT sql
FROM sqlite_master
WHERE type = 'table' AND name = %s
""", [table_name]).fetchone()
if not row:
return {}
sql = row[0]
columns = str(sqlparse.parse(sql)[0][-1]).strip('()').split(', ')
collations = {}
for column in columns:
tokens = column[1:].split()
column_name = tokens[0].strip('"')
for index, token in enumerate(tokens):
if token == 'COLLATE':
collation = tokens[index + 1]
break
else:
collation = None
collations[column_name] = collation
return collations
|
d35acbb74d2a82270f8289d92405025e984793506f869963ccdc9a741f7f29fd | import functools
import os
import pkgutil
import sys
from argparse import (
_AppendConstAction, _CountAction, _StoreConstAction, _SubParsersAction,
)
from collections import defaultdict
from difflib import get_close_matches
from importlib import import_module
import django
from django.apps import apps
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.core.management.base import (
BaseCommand, CommandError, CommandParser, handle_default_options,
)
from django.core.management.color import color_style
from django.utils import autoreload
def find_commands(management_dir):
"""
Given a path to a management directory, return a list of all the command
names that are available.
"""
command_dir = os.path.join(management_dir, 'commands')
return [name for _, name, is_pkg in pkgutil.iter_modules([command_dir])
if not is_pkg and not name.startswith('_')]
def load_command_class(app_name, name):
"""
Given a command name and an application name, return the Command
class instance. Allow all errors raised by the import process
(ImportError, AttributeError) to propagate.
"""
module = import_module('%s.management.commands.%s' % (app_name, name))
return module.Command()
@functools.lru_cache(maxsize=None)
def get_commands():
"""
Return a dictionary mapping command names to their callback applications.
Look for a management.commands package in django.core, and in each
installed application -- if a commands package exists, register all
commands in that package.
Core commands are always included. If a settings module has been
specified, also include user-defined commands.
The dictionary is in the format {command_name: app_name}. Key-value
pairs from this dictionary can then be used in calls to
load_command_class(app_name, command_name)
If a specific version of a command must be loaded (e.g., with the
startapp command), the instantiated module can be placed in the
dictionary in place of the application name.
The dictionary is cached on the first call and reused on subsequent
calls.
"""
commands = {name: 'django.core' for name in find_commands(__path__[0])}
if not settings.configured:
return commands
for app_config in reversed(list(apps.get_app_configs())):
path = os.path.join(app_config.path, 'management')
commands.update({name: app_config.name for name in find_commands(path)})
return commands
def call_command(command_name, *args, **options):
"""
Call the given command, with the given options and args/kwargs.
This is the primary API you should use for calling specific commands.
`command_name` may be a string or a command object. Using a string is
preferred unless the command object is required for further processing or
testing.
Some examples:
call_command('migrate')
call_command('shell', plain=True)
call_command('sqlmigrate', 'myapp')
from django.core.management.commands import flush
cmd = flush.Command()
call_command(cmd, verbosity=0, interactive=False)
# Do something with cmd ...
"""
if isinstance(command_name, BaseCommand):
# Command object passed in.
command = command_name
command_name = command.__class__.__module__.split('.')[-1]
else:
# Load the command object by name.
try:
app_name = get_commands()[command_name]
except KeyError:
raise CommandError("Unknown command: %r" % command_name)
if isinstance(app_name, BaseCommand):
# If the command is already loaded, use it directly.
command = app_name
else:
command = load_command_class(app_name, command_name)
# Simulate argument parsing to get the option defaults (see #10080 for details).
parser = command.create_parser('', command_name)
# Use the `dest` option name from the parser option
opt_mapping = {
min(s_opt.option_strings).lstrip('-').replace('-', '_'): s_opt.dest
for s_opt in parser._actions if s_opt.option_strings
}
arg_options = {opt_mapping.get(key, key): value for key, value in options.items()}
parse_args = []
for arg in args:
if isinstance(arg, (list, tuple)):
parse_args += map(str, arg)
else:
parse_args.append(str(arg))
def get_actions(parser):
# Parser actions and actions from sub-parser choices.
for opt in parser._actions:
if isinstance(opt, _SubParsersAction):
for sub_opt in opt.choices.values():
yield from get_actions(sub_opt)
else:
yield opt
parser_actions = list(get_actions(parser))
mutually_exclusive_required_options = {
opt
for group in parser._mutually_exclusive_groups
for opt in group._group_actions if group.required
}
# Any required arguments which are passed in via **options must be passed
# to parse_args().
for opt in parser_actions:
if (
opt.dest in options and
(opt.required or opt in mutually_exclusive_required_options)
):
opt_dest_count = sum(v == opt.dest for v in opt_mapping.values())
if opt_dest_count > 1:
raise TypeError(
f'Cannot pass the dest {opt.dest!r} that matches multiple '
f'arguments via **options.'
)
parse_args.append(min(opt.option_strings))
if isinstance(opt, (_AppendConstAction, _CountAction, _StoreConstAction)):
continue
value = arg_options[opt.dest]
if isinstance(value, (list, tuple)):
parse_args += map(str, value)
else:
parse_args.append(str(value))
defaults = parser.parse_args(args=parse_args)
defaults = dict(defaults._get_kwargs(), **arg_options)
# Raise an error if any unknown options were passed.
stealth_options = set(command.base_stealth_options + command.stealth_options)
dest_parameters = {action.dest for action in parser_actions}
valid_options = (dest_parameters | stealth_options).union(opt_mapping)
unknown_options = set(options) - valid_options
if unknown_options:
raise TypeError(
"Unknown option(s) for %s command: %s. "
"Valid options are: %s." % (
command_name,
', '.join(sorted(unknown_options)),
', '.join(sorted(valid_options)),
)
)
# Move positional args out of options to mimic legacy optparse
args = defaults.pop('args', ())
if 'skip_checks' not in options:
defaults['skip_checks'] = True
return command.execute(*args, **defaults)
class ManagementUtility:
"""
Encapsulate the logic of the django-admin and manage.py utilities.
"""
def __init__(self, argv=None):
self.argv = argv or sys.argv[:]
self.prog_name = os.path.basename(self.argv[0])
if self.prog_name == '__main__.py':
self.prog_name = 'python -m django'
self.settings_exception = None
def main_help_text(self, commands_only=False):
"""Return the script's main help text, as a string."""
if commands_only:
usage = sorted(get_commands())
else:
usage = [
"",
"Type '%s help <subcommand>' for help on a specific subcommand." % self.prog_name,
"",
"Available subcommands:",
]
commands_dict = defaultdict(lambda: [])
for name, app in get_commands().items():
if app == 'django.core':
app = 'django'
else:
app = app.rpartition('.')[-1]
commands_dict[app].append(name)
style = color_style()
for app in sorted(commands_dict):
usage.append("")
usage.append(style.NOTICE("[%s]" % app))
for name in sorted(commands_dict[app]):
usage.append(" %s" % name)
# Output an extra note if settings are not properly configured
if self.settings_exception is not None:
usage.append(style.NOTICE(
"Note that only Django core commands are listed "
"as settings are not properly configured (error: %s)."
% self.settings_exception))
return '\n'.join(usage)
def fetch_command(self, subcommand):
"""
Try to fetch the given subcommand, printing a message with the
appropriate command called from the command line (usually
"django-admin" or "manage.py") if it can't be found.
"""
# Get commands outside of try block to prevent swallowing exceptions
commands = get_commands()
try:
app_name = commands[subcommand]
except KeyError:
if os.environ.get('DJANGO_SETTINGS_MODULE'):
# If `subcommand` is missing due to misconfigured settings, the
# following line will retrigger an ImproperlyConfigured exception
# (get_commands() swallows the original one) so the user is
# informed about it.
settings.INSTALLED_APPS
elif not settings.configured:
sys.stderr.write("No Django settings specified.\n")
possible_matches = get_close_matches(subcommand, commands)
sys.stderr.write('Unknown command: %r' % subcommand)
if possible_matches:
sys.stderr.write('. Did you mean %s?' % possible_matches[0])
sys.stderr.write("\nType '%s help' for usage.\n" % self.prog_name)
sys.exit(1)
if isinstance(app_name, BaseCommand):
# If the command is already loaded, use it directly.
klass = app_name
else:
klass = load_command_class(app_name, subcommand)
return klass
def autocomplete(self):
"""
Output completion suggestions for BASH.
The output of this function is passed to BASH's `COMREPLY` variable and
treated as completion suggestions. `COMREPLY` expects a space
separated string as the result.
The `COMP_WORDS` and `COMP_CWORD` BASH environment variables are used
to get information about the cli input. Please refer to the BASH
man-page for more information about this variables.
Subcommand options are saved as pairs. A pair consists of
the long option string (e.g. '--exclude') and a boolean
value indicating if the option requires arguments. When printing to
stdout, an equal sign is appended to options which require arguments.
Note: If debugging this function, it is recommended to write the debug
output in a separate file. Otherwise the debug output will be treated
and formatted as potential completion suggestions.
"""
# Don't complete if user hasn't sourced bash_completion file.
if 'DJANGO_AUTO_COMPLETE' not in os.environ:
return
cwords = os.environ['COMP_WORDS'].split()[1:]
cword = int(os.environ['COMP_CWORD'])
try:
curr = cwords[cword - 1]
except IndexError:
curr = ''
subcommands = [*get_commands(), 'help']
options = [('--help', False)]
# subcommand
if cword == 1:
print(' '.join(sorted(filter(lambda x: x.startswith(curr), subcommands))))
# subcommand options
# special case: the 'help' subcommand has no options
elif cwords[0] in subcommands and cwords[0] != 'help':
subcommand_cls = self.fetch_command(cwords[0])
# special case: add the names of installed apps to options
if cwords[0] in ('dumpdata', 'sqlmigrate', 'sqlsequencereset', 'test'):
try:
app_configs = apps.get_app_configs()
# Get the last part of the dotted path as the app name.
options.extend((app_config.label, 0) for app_config in app_configs)
except ImportError:
# Fail silently if DJANGO_SETTINGS_MODULE isn't set. The
# user will find out once they execute the command.
pass
parser = subcommand_cls.create_parser('', cwords[0])
options.extend(
(min(s_opt.option_strings), s_opt.nargs != 0)
for s_opt in parser._actions if s_opt.option_strings
)
# filter out previously specified options from available options
prev_opts = {x.split('=')[0] for x in cwords[1:cword - 1]}
options = (opt for opt in options if opt[0] not in prev_opts)
# filter options by current input
options = sorted((k, v) for k, v in options if k.startswith(curr))
for opt_label, require_arg in options:
# append '=' to options which require args
if require_arg:
opt_label += '='
print(opt_label)
# Exit code of the bash completion function is never passed back to
# the user, so it's safe to always exit with 0.
# For more details see #25420.
sys.exit(0)
def execute(self):
"""
Given the command-line arguments, figure out which subcommand is being
run, create a parser appropriate to that command, and run it.
"""
try:
subcommand = self.argv[1]
except IndexError:
subcommand = 'help' # Display help if no arguments were given.
# Preprocess options to extract --settings and --pythonpath.
# These options could affect the commands that are available, so they
# must be processed early.
parser = CommandParser(
prog=self.prog_name,
usage='%(prog)s subcommand [options] [args]',
add_help=False,
allow_abbrev=False,
)
parser.add_argument('--settings')
parser.add_argument('--pythonpath')
parser.add_argument('args', nargs='*') # catch-all
try:
options, args = parser.parse_known_args(self.argv[2:])
handle_default_options(options)
except CommandError:
pass # Ignore any option errors at this point.
try:
settings.INSTALLED_APPS
except ImproperlyConfigured as exc:
self.settings_exception = exc
except ImportError as exc:
self.settings_exception = exc
if settings.configured:
# Start the auto-reloading dev server even if the code is broken.
# The hardcoded condition is a code smell but we can't rely on a
# flag on the command class because we haven't located it yet.
if subcommand == 'runserver' and '--noreload' not in self.argv:
try:
autoreload.check_errors(django.setup)()
except Exception:
# The exception will be raised later in the child process
# started by the autoreloader. Pretend it didn't happen by
# loading an empty list of applications.
apps.all_models = defaultdict(dict)
apps.app_configs = {}
apps.apps_ready = apps.models_ready = apps.ready = True
# Remove options not compatible with the built-in runserver
# (e.g. options for the contrib.staticfiles' runserver).
# Changes here require manually testing as described in
# #27522.
_parser = self.fetch_command('runserver').create_parser('django', 'runserver')
_options, _args = _parser.parse_known_args(self.argv[2:])
for _arg in _args:
self.argv.remove(_arg)
# In all other cases, django.setup() is required to succeed.
else:
django.setup()
self.autocomplete()
if subcommand == 'help':
if '--commands' in args:
sys.stdout.write(self.main_help_text(commands_only=True) + '\n')
elif not options.args:
sys.stdout.write(self.main_help_text() + '\n')
else:
self.fetch_command(options.args[0]).print_help(self.prog_name, options.args[0])
# Special-cases: We want 'django-admin --version' and
# 'django-admin --help' to work, for backwards compatibility.
elif subcommand == 'version' or self.argv[1:] == ['--version']:
sys.stdout.write(django.get_version() + '\n')
elif self.argv[1:] in (['--help'], ['-h']):
sys.stdout.write(self.main_help_text() + '\n')
else:
self.fetch_command(subcommand).run_from_argv(self.argv)
def execute_from_command_line(argv=None):
"""Run a ManagementUtility."""
utility = ManagementUtility(argv)
utility.execute()
|
2180d45ce0300c332a4a5ccd00e861a717f67e7470632eda69bf418a70c42680 | import functools
import re
from unittest import mock
from django.apps import apps
from django.conf import settings
from django.contrib.auth.models import AbstractBaseUser
from django.core.validators import RegexValidator, validate_slug
from django.db import connection, migrations, models
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.graph import MigrationGraph
from django.db.migrations.loader import MigrationLoader
from django.db.migrations.questioner import MigrationQuestioner
from django.db.migrations.state import ModelState, ProjectState
from django.test import SimpleTestCase, TestCase, override_settings
from django.test.utils import isolate_lru_cache
from .models import FoodManager, FoodQuerySet
class DeconstructibleObject:
"""
A custom deconstructible object.
"""
def __init__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
def deconstruct(self):
return (
self.__module__ + '.' + self.__class__.__name__,
self.args,
self.kwargs
)
class AutodetectorTests(TestCase):
"""
Tests the migration autodetector.
"""
author_empty = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_name = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
author_name_null = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, null=True)),
])
author_name_longer = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=400)),
])
author_name_renamed = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("names", models.CharField(max_length=200)),
])
author_name_default = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default='Ada Lovelace')),
])
author_name_check_constraint = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
],
{'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]},
)
author_dates_of_birth_auto_now = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now=True)),
("date_time_of_birth", models.DateTimeField(auto_now=True)),
("time_of_birth", models.TimeField(auto_now=True)),
])
author_dates_of_birth_auto_now_add = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now_add=True)),
("date_time_of_birth", models.DateTimeField(auto_now_add=True)),
("time_of_birth", models.TimeField(auto_now_add=True)),
])
author_name_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_4 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_list_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 999])),
])
author_name_deconstructible_tuple_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 999))),
])
author_name_deconstructible_dict_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 999
})),
])
author_name_nested_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2-changed'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_extra_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
None,
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c-changed')),
))),
])
author_name_nested_deconstructible_extra_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
c=None,
))),
])
author_custom_pk = ModelState("testapp", "Author", [("pk_field", models.IntegerField(primary_key=True))])
author_with_biography_non_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField()),
("biography", models.TextField()),
])
author_with_biography_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(blank=True)),
("biography", models.TextField(blank=True)),
])
author_with_book = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_book_order_wrt = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
], options={"order_with_respect_to": "book"})
author_renamed_with_book = ModelState("testapp", "Writer", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_publisher_string = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher_name", models.CharField(max_length=200)),
])
author_with_publisher = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
author_with_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("auth.User", models.CASCADE)),
])
author_with_custom_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("thirdapp.CustomUser", models.CASCADE)),
])
author_proxy = ModelState("testapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_options = ModelState("testapp", "AuthorProxy", [], {
"proxy": True,
"verbose_name": "Super Author",
}, ("testapp.author",))
author_proxy_notproxy = ModelState("testapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_third = ModelState("thirdapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_third_notproxy = ModelState("thirdapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_proxy = ModelState("testapp", "AAuthorProxyProxy", [], {"proxy": True}, ("testapp.authorproxy",))
author_unmanaged = ModelState("testapp", "AuthorUnmanaged", [], {"managed": False}, ("testapp.author",))
author_unmanaged_managed = ModelState("testapp", "AuthorUnmanaged", [], {}, ("testapp.author",))
author_unmanaged_default_pk = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_unmanaged_custom_pk = ModelState("testapp", "Author", [
("pk_field", models.IntegerField(primary_key=True)),
])
author_with_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher")),
])
author_with_m2m_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", blank=True)),
])
author_with_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Contract")),
])
author_with_renamed_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Deal")),
])
author_with_former_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.CharField(max_length=100)),
])
author_with_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
author_with_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_with_new_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_two"})
author_renamed_with_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_renamed_with_new_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_three"})
contract = ModelState("testapp", "Contract", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
contract_renamed = ModelState("testapp", "Deal", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
publisher = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=100)),
])
publisher_with_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_aardvark_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Aardvark", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_book = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Book", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
other_pony = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
])
other_pony_food = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
], managers=[
('food_qs', FoodQuerySet.as_manager()),
('food_mgr', FoodManager('a', 'b')),
('food_mgr_kwargs', FoodManager('x', 'y', 3, 4)),
])
other_stable = ModelState("otherapp", "Stable", [("id", models.AutoField(primary_key=True))])
third_thing = ModelState("thirdapp", "Thing", [("id", models.AutoField(primary_key=True))])
book = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("thirdapp.AuthorProxy", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.AAuthorProxyProxy", models.CASCADE)),
])
book_migrations_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("migrations.UnmigratedModel", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_no_author_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.IntegerField()),
("title", models.CharField(max_length=200)),
])
book_with_no_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("title", models.CharField(max_length=200)),
])
book_with_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_field_and_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("writer", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author")),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors_through_attribution = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author", through="otherapp.Attribution")),
("title", models.CharField(max_length=200)),
])
book_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["author", "title"], name="book_title_author_idx")],
})
book_unordered_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["title", "author"], name="book_author_title_idx")],
})
book_foo_together = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("author", "title")},
"unique_together": {("author", "title")},
})
book_foo_together_2 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
book_foo_together_3 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield")},
"unique_together": {("title", "newfield")},
})
book_foo_together_4 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield2", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield2")},
"unique_together": {("title", "newfield2")},
})
attribution = ModelState("otherapp", "Attribution", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
edition = ModelState("thirdapp", "Edition", [
("id", models.AutoField(primary_key=True)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
custom_user = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
], bases=(AbstractBaseUser,))
custom_user_no_inherit = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
])
aardvark = ModelState("thirdapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_testapp = ModelState("testapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_based_on_author = ModelState("testapp", "Aardvark", [], bases=("testapp.Author",))
aardvark_pk_fk_author = ModelState("testapp", "Aardvark", [
("id", models.OneToOneField("testapp.Author", models.CASCADE, primary_key=True)),
])
knight = ModelState("eggs", "Knight", [("id", models.AutoField(primary_key=True))])
rabbit = ModelState("eggs", "Rabbit", [
("id", models.AutoField(primary_key=True)),
("knight", models.ForeignKey("eggs.Knight", models.CASCADE)),
("parent", models.ForeignKey("eggs.Rabbit", models.CASCADE)),
], {
"unique_together": {("parent", "knight")},
"indexes": [models.Index(fields=["parent", "knight"], name='rabbit_circular_fk_index')],
})
def repr_changes(self, changes, include_dependencies=False):
output = ""
for app_label, migrations_ in sorted(changes.items()):
output += " %s:\n" % app_label
for migration in migrations_:
output += " %s\n" % migration.name
for operation in migration.operations:
output += " %s\n" % operation
if include_dependencies:
output += " Dependencies:\n"
if migration.dependencies:
for dep in migration.dependencies:
output += " %s\n" % (dep,)
else:
output += " None\n"
return output
def assertNumberMigrations(self, changes, app_label, number):
if len(changes.get(app_label, [])) != number:
self.fail("Incorrect number of migrations (%s) for %s (expected %s)\n%s" % (
len(changes.get(app_label, [])),
app_label,
number,
self.repr_changes(changes),
))
def assertMigrationDependencies(self, changes, app_label, position, dependencies):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if set(migration.dependencies) != set(dependencies):
self.fail("Migration dependencies mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
dependencies,
self.repr_changes(changes, include_dependencies=True),
))
def assertOperationTypes(self, changes, app_label, position, types):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
real_types = [operation.__class__.__name__ for operation in migration.operations]
if types != real_types:
self.fail("Operation type mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
types,
self.repr_changes(changes),
))
def assertOperationAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
for attr, value in attrs.items():
if getattr(operation, attr, None) != value:
self.fail("Attribute mismatch for %s.%s op #%s, %s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(operation, attr, None),
self.repr_changes(changes),
))
def assertOperationFieldAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
if not hasattr(operation, 'field'):
self.fail("No field attribute for %s.%s op #%s." % (
app_label,
migration.name,
operation_position,
))
field = operation.field
for attr, value in attrs.items():
if getattr(field, attr, None) != value:
self.fail("Field attribute mismatch for %s.%s op #%s, field.%s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(field, attr, None),
self.repr_changes(changes),
))
def make_project_state(self, model_states):
"Shortcut to make ProjectStates from lists of predefined models"
project_state = ProjectState()
for model_state in model_states:
project_state.add_model(model_state.clone())
return project_state
def get_changes(self, before_states, after_states, questioner=None):
if not isinstance(before_states, ProjectState):
before_states = self.make_project_state(before_states)
if not isinstance(after_states, ProjectState):
after_states = self.make_project_state(after_states)
return MigrationAutodetector(
before_states,
after_states,
questioner,
)._detect_changes()
def test_arrange_for_graph(self):
"""Tests auto-naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("otherapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([self.publisher, self.other_pony])
after = self.make_project_state([
self.author_empty, self.publisher, self.other_pony, self.other_stable,
])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
changes = autodetector.arrange_for_graph(changes, graph)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_author")
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, '0002_stable')
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_arrange_for_graph_with_multiple_initial(self):
# Make a fake graph.
graph = MigrationGraph()
# Use project state to make a new migration change set.
before = self.make_project_state([])
after = self.make_project_state([self.author_with_book, self.book, self.attribution])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({'ask_initial': True}))
changes = autodetector._detect_changes()
changes = autodetector.arrange_for_graph(changes, graph)
self.assertEqual(changes['otherapp'][0].name, '0001_initial')
self.assertEqual(changes['otherapp'][0].dependencies, [])
self.assertEqual(changes['otherapp'][1].name, '0002_initial')
self.assertCountEqual(
changes['otherapp'][1].dependencies,
[('testapp', '0001_initial'), ('otherapp', '0001_initial')],
)
self.assertEqual(changes['testapp'][0].name, '0001_initial')
self.assertEqual(changes['testapp'][0].dependencies, [('otherapp', '0001_initial')])
def test_trim_apps(self):
"""
Trim does not remove dependencies but does remove unwanted apps.
"""
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable, self.third_thing])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({"ask_initial": True}))
changes = autodetector._detect_changes()
# Run through arrange_for_graph
graph = MigrationGraph()
changes = autodetector.arrange_for_graph(changes, graph)
changes["testapp"][0].dependencies.append(("otherapp", "0001_initial"))
changes = autodetector._trim_to_apps(changes, {"testapp"})
# Make sure there's the right set of migrations
self.assertEqual(changes["testapp"][0].name, "0001_initial")
self.assertEqual(changes["otherapp"][0].name, "0001_initial")
self.assertNotIn("thirdapp", changes)
def test_custom_migration_name(self):
"""Tests custom naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
migration_name = 'custom_name'
changes = autodetector.arrange_for_graph(changes, graph, migration_name)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_%s" % migration_name)
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, "0002_%s" % migration_name)
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_new_model(self):
"""Tests autodetection of new models."""
changes = self.get_changes([], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="Pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
def test_old_model(self):
"""Tests deletion of old models."""
changes = self.get_changes([self.author_empty], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
def test_add_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_empty], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_not_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_add_not_asking_for_null_addition(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_auto_now_add_addition')
def test_add_date_fields_with_auto_now_add_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
self.assertEqual(mocked_ask_method.call_count, 3)
def test_remove_field(self):
"""Tests autodetection of removed fields."""
changes = self.get_changes([self.author_name], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
def test_alter_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_name], [self.author_name_longer])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
def test_supports_functools_partial(self):
def _content_file_name(instance, filename, key, **kwargs):
return '{}/{}'.format(instance, filename)
def content_file_name(key, **kwargs):
return functools.partial(_content_file_name, key, **kwargs)
# An unchanged partial reference.
before = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
after = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'testapp', 0)
# A changed partial reference.
args_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('other-file'))),
])]
changes = self.get_changes(before, args_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
# Can't use assertOperationFieldAttributes because we need the
# deconstructed version, i.e., the exploded func/args/keywords rather
# than the partial: we don't care if it's not the same instance of the
# partial, only if it's the same source function, args, and keywords.
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('other-file',), {}),
(value.func, value.args, value.keywords)
)
kwargs_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file', spam='eggs'))),
])]
changes = self.get_changes(before, kwargs_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('file',), {'spam': 'eggs'}),
(value.func, value.args, value.keywords)
)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_alter_field_to_not_null_with_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default='Ada Lovelace')
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value=models.NOT_PROVIDED,
)
def test_alter_field_to_not_null_without_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default=models.NOT_PROVIDED)
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value='Some Name',
)
def test_alter_field_to_not_null_oneoff_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=False)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default="Some Name")
def test_rename_field(self):
"""Tests autodetection of renamed fields."""
changes = self.get_changes(
[self.author_name], [self.author_name_renamed], MigrationQuestioner({"ask_rename": True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="name", new_name="names")
def test_rename_field_foreign_key_to_field(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='field')),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='renamed_field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='field', new_name='renamed_field')
def test_rename_foreign_object_fields(self):
fields = ('first', 'second')
renamed_fields = ('first_renamed', 'second_renamed')
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=fields,
)),
]),
]
# Case 1: to_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
], options={'unique_together': {renamed_fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=renamed_fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField', 'AlterUniqueTogether'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='second', new_name='second_renamed',
)
# Case 2: from_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=renamed_fields, to_fields=fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='second', new_name='second_renamed',
)
def test_rename_referenced_primary_key(self):
before = [
ModelState('app', 'Foo', [
('id', models.CharField(primary_key=True, serialize=False)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('renamed_id', models.CharField(primary_key=True, serialize=False))
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='id', new_name='renamed_id')
def test_rename_field_preserved_db_column(self):
"""
RenameField is used if a field is renamed and db_column equal to the
old field's column is added.
"""
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField()),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(db_column='field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', name='field',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'field', 'django.db.models.IntegerField', [], {'db_column': 'field'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='field',
new_name='renamed_field',
)
def test_rename_related_field_preserved_db_column(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('renamed_foo', models.ForeignKey('app.Foo', models.CASCADE, db_column='foo_id')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', name='foo',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'foo',
'django.db.models.ForeignKey',
[],
{'to': 'app.foo', 'on_delete': models.CASCADE, 'db_column': 'foo_id'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='foo',
new_name='renamed_foo',
)
def test_rename_model(self):
"""Tests autodetection of renamed models."""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_author_renamed],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Now that RenameModel handles related fields too, there should be
# no AlterField for the related field.
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_model_case(self):
"""
Model name is case-insensitive. Changing case doesn't lead to any
autodetected operations.
"""
author_renamed = ModelState('testapp', 'author', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes(
[self.author_empty, self.book],
[author_renamed, self.book],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_renamed_referenced_m2m_model_case(self):
publisher_renamed = ModelState('testapp', 'publisher', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=100)),
])
changes = self.get_changes(
[self.publisher, self.author_with_m2m],
[publisher_renamed, self.author_with_m2m],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_m2m_through_model(self):
"""
Tests autodetection of renamed models that are used in M2M relations as
through models.
"""
changes = self.get_changes(
[self.author_with_m2m_through, self.publisher, self.contract],
[self.author_with_renamed_m2m_through, self.publisher, self.contract_renamed],
MigrationQuestioner({'ask_rename_model': True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='Contract', new_name='Deal')
def test_rename_model_with_renamed_rel_field(self):
"""
Tests autodetection of renamed models while simultaneously renaming one
of the fields that relate to the renamed model.
"""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_field_and_author_renamed],
MigrationQuestioner({"ask_rename": True, "ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Right number/type of migrations for related field rename?
# Alter is already taken care of.
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, old_name="author", new_name="writer")
def test_rename_model_with_fks_in_different_position(self):
"""
#24537 - The order of fields in a model does not influence
the RenameModel detection.
"""
before = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "EntityB", [
("id", models.AutoField(primary_key=True)),
("some_label", models.CharField(max_length=255)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
]),
]
after = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "RenamedEntityB", [
("id", models.AutoField(primary_key=True)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
("some_label", models.CharField(max_length=255)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({"ask_rename_model": True}))
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="EntityB", new_name="RenamedEntityB")
def test_rename_model_reverse_relation_dependencies(self):
"""
The migration to rename a model pointed to by a foreign key in another
app must run after the other app's migration that adds the foreign key
with model's original name. Therefore, the renaming migration has a
dependency on that other migration.
"""
before = [
ModelState('testapp', 'EntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.EntityA', models.CASCADE)),
]),
]
after = [
ModelState('testapp', 'RenamedEntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.RenamedEntityA', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename_model': True}))
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertMigrationDependencies(changes, 'testapp', 0, [('otherapp', '__first__')])
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='EntityA', new_name='RenamedEntityA')
def test_fk_dependency(self):
"""Having a ForeignKey automatically adds a dependency."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (author),
# thirdapp (edition) depends on otherapp (book)
changes = self.get_changes([], [self.author_name, self.book, self.edition])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("testapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="Edition")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("otherapp", "auto_1")])
def test_proxy_fk_dependency(self):
"""FK dependencies still work on proxy models."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (authorproxy)
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("thirdapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="AuthorProxy")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("testapp", "auto_1")])
def test_same_app_no_fk_dependency(self):
"""
A migration with a FK between two models of the same app
does not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_circular_fk_dependency(self):
"""
Having a circular ForeignKey dependency automatically
resolves the situation into 2 migrations on one side and 1 on the other.
"""
changes = self.get_changes([], [self.author_with_book, self.book, self.publisher_with_book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 2)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'otherapp', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'otherapp', 0, [])
self.assertMigrationDependencies(changes, 'otherapp', 1, [("otherapp", "auto_1"), ("testapp", "auto_1")])
# both split migrations should be `initial`
self.assertTrue(changes['otherapp'][0].initial)
self.assertTrue(changes['otherapp'][1].initial)
def test_same_app_circular_fk_dependency(self):
"""
A migration with a FK between two models of the same app does
not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher_with_author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="publisher")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_same_app_circular_fk_dependency_with_unique_together_and_indexes(self):
"""
#22275 - A migration with circular FK dependency does not try
to create unique together constraint and indexes before creating all
required fields first.
"""
changes = self.get_changes([], [self.knight, self.rabbit])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'eggs', 1)
self.assertOperationTypes(
changes, 'eggs', 0, ["CreateModel", "CreateModel", "AddIndex", "AlterUniqueTogether"]
)
self.assertNotIn("unique_together", changes['eggs'][0].operations[0].options)
self.assertNotIn("unique_together", changes['eggs'][0].operations[1].options)
self.assertMigrationDependencies(changes, 'eggs', 0, [])
def test_alter_db_table_add(self):
"""Tests detection for adding db_table in model's options."""
changes = self.get_changes([self.author_empty], [self.author_with_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_one")
def test_alter_db_table_change(self):
"""Tests detection for changing db_table in model's options'."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_new_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_two")
def test_alter_db_table_remove(self):
"""Tests detection for removing db_table in model's options."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table=None)
def test_alter_db_table_no_changes(self):
"""
Alter_db_table doesn't generate a migration if no changes have been made.
"""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_db_table_options])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_keep_db_table_with_model_change(self):
"""
Tests when model changes but db_table stays as-is, autodetector must not
create more than one operation.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
def test_alter_db_table_with_model_change(self):
"""
Tests when model and db_table changes, autodetector must create two
operations.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_new_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel", "AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="newauthor", table="author_three")
def test_identical_regex_doesnt_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[-a-zA-Z0-9_]+\\Z'),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 0)
def test_different_regex_does_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[a-z]+\\Z', 32),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterField"])
def test_empty_foo_together(self):
"""
#23452 - Empty unique/index_together shouldn't generate a migration.
"""
# Explicitly testing for not specified, since this is the case after
# a CreateModel operation w/o any definition on the original model
model_state_not_specified = ModelState("a", "model", [("id", models.AutoField(primary_key=True))])
# Explicitly testing for None, since this was the issue in #23452 after
# an AlterFooTogether operation with e.g. () as value
model_state_none = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": None,
"unique_together": None,
})
# Explicitly testing for the empty set, since we now always have sets.
# During removal (('col1', 'col2'),) --> () this becomes set([])
model_state_empty = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": set(),
"unique_together": set(),
})
def test(from_state, to_state, msg):
changes = self.get_changes([from_state], [to_state])
if changes:
ops = ', '.join(o.__class__.__name__ for o in changes['a'][0].operations)
self.fail('Created operation(s) %s from %s' % (ops, msg))
tests = (
(model_state_not_specified, model_state_not_specified, '"not specified" to "not specified"'),
(model_state_not_specified, model_state_none, '"not specified" to "None"'),
(model_state_not_specified, model_state_empty, '"not specified" to "empty"'),
(model_state_none, model_state_not_specified, '"None" to "not specified"'),
(model_state_none, model_state_none, '"None" to "None"'),
(model_state_none, model_state_empty, '"None" to "empty"'),
(model_state_empty, model_state_not_specified, '"empty" to "not specified"'),
(model_state_empty, model_state_none, '"empty" to "None"'),
(model_state_empty, model_state_empty, '"empty" to "empty"'),
)
for t in tests:
test(*t)
def test_create_model_with_indexes(self):
"""Test creation of new model with indexes already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'indexes': [models.Index(fields=['name'], name='create_model_with_indexes_idx')]})
changes = self.get_changes([], [author])
added_index = models.Index(fields=['name'], name='create_model_with_indexes_idx')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', index=added_index)
def test_add_indexes(self):
"""Test change detection of new indexes."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_indexes])
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AddIndex'])
added_index = models.Index(fields=['author', 'title'], name='book_title_author_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', index=added_index)
def test_remove_indexes(self):
"""Test change detection of removed indexes."""
changes = self.get_changes([self.author_empty, self.book_indexes], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
def test_order_fields_indexes(self):
"""Test change detection of reordering of fields in indexes."""
changes = self.get_changes(
[self.author_empty, self.book_indexes], [self.author_empty, self.book_unordered_indexes]
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
added_index = models.Index(fields=['title', 'author'], name='book_author_title_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='book', index=added_index)
def test_create_model_with_check_constraint(self):
"""Test creation of new model with constraints already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]})
changes = self.get_changes([], [author])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddConstraint'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', constraint=added_constraint)
def test_add_constraints(self):
"""Test change detection of new constraints."""
changes = self.get_changes([self.author_name], [self.author_name_check_constraint])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AddConstraint'])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', constraint=added_constraint)
def test_remove_constraints(self):
"""Test change detection of removed constraints."""
changes = self.get_changes([self.author_name_check_constraint], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RemoveConstraint'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', name='name_contains_bob')
def test_add_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together={("author", "title")})
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together={("author", "title")})
def test_remove_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book_foo_together], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
def test_foo_together_remove_fk(self):
"""Tests unique_together and field removal detection & ordering"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_with_no_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, [
"AlterUniqueTogether", "AlterIndexTogether", "RemoveField"
])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 2, model_name="book", name="author")
def test_foo_together_no_changes(self):
"""
index/unique_together doesn't generate a migration if no
changes have been made.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together]
)
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_foo_together_ordering(self):
"""
index/unique_together also triggers on ordering changes.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together_2]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('title', 'author')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('title', 'author')},
)
def test_add_field_and_foo_together(self):
"""
Added fields will be created before using them in index/unique_together.
"""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together_3])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AddField", "AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", unique_together={("title", "newfield")})
self.assertOperationAttributes(changes, "otherapp", 0, 2, name="book", index_together={("title", "newfield")})
def test_create_model_and_unique_together(self):
author = ModelState("otherapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
book_with_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
changes = self.get_changes([self.book_with_no_author], [author, book_with_author])
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 4)
# Right actions order?
self.assertOperationTypes(
changes, 'otherapp', 0,
['CreateModel', 'AddField', 'AlterUniqueTogether', 'AlterIndexTogether']
)
def test_remove_field_and_foo_together(self):
"""
Removed fields will be removed after updating index/unique_together.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3], [self.author_empty, self.book_foo_together]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
'RemoveField',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, model_name='book', name='newfield',
)
def test_alter_field_and_foo_together(self):
"""Fields are altered after deleting some index/unique_together."""
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField(db_index=True)),
], {
'unique_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200, unique=True)),
('age', models.IntegerField()),
], {
'index_together': {('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterField',
'AlterField',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, model_name='author', name='age',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 2, model_name='author', name='name',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 3, name='author', index_together={('age',)},
)
def test_partly_alter_foo_together(self):
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('name',), ('age',)},
'index_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('age',)},
'index_together': {('name',), ('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together={('age',)},
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, name='author',
index_together={('name',), ('age',)},
)
def test_rename_field_and_foo_together(self):
"""Fields are renamed before updating index/unique_together."""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3],
[self.author_empty, self.book_foo_together_4],
MigrationQuestioner({"ask_rename": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'RenameField',
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
unique_together={('title', 'newfield2')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, name='book',
index_together={('title', 'newfield2')},
)
def test_proxy(self):
"""The autodetector correctly deals with proxy models."""
# First, we test adding a proxy model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel"])
self.assertOperationAttributes(
changes, "testapp", 0, 0, name="AuthorProxy", options={"proxy": True, "indexes": [], "constraints": []}
)
# Now, we test turning a proxy model into a non-proxy model
# It should delete the proxy then make the real one
changes = self.get_changes(
[self.author_empty, self.author_proxy], [self.author_empty, self.author_proxy_notproxy]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["DeleteModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="AuthorProxy")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="AuthorProxy", options={})
def test_proxy_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on proxy
models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_custom_pk, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
def test_proxy_to_mti_with_fk_to_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third, self.book_proxy_fk],
)
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
# Change AuthorProxy to use MTI.
from_state = to_state.clone()
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third_notproxy, self.book_proxy_fk],
)
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AuthorProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on thirdapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('thirdapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('thirdapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
def test_proxy_to_mti_with_fk_to_proxy_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state([
self.author_empty,
self.author_proxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[1][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
# Change AuthorProxy to use MTI. FK still points to AAuthorProxyProxy,
# a proxy of AuthorProxy.
from_state = to_state.clone()
to_state = self.make_project_state([
self.author_empty,
self.author_proxy_notproxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AAuthorProxyProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on testapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
def test_unmanaged_create(self):
"""The autodetector correctly deals with managed models."""
# First, we test adding an unmanaged model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_unmanaged])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="AuthorUnmanaged", options={"managed": False})
def test_unmanaged_delete(self):
changes = self.get_changes([self.author_empty, self.author_unmanaged], [self.author_empty])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel'])
def test_unmanaged_to_managed(self):
# Now, we test turning an unmanaged model into a managed model
changes = self.get_changes(
[self.author_empty, self.author_unmanaged], [self.author_empty, self.author_unmanaged_managed]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="authorunmanaged", options={})
def test_managed_to_unmanaged(self):
# Now, we turn managed to unmanaged.
changes = self.get_changes(
[self.author_empty, self.author_unmanaged_managed], [self.author_empty, self.author_unmanaged]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorunmanaged", options={"managed": False})
def test_unmanaged_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on
unmanaged models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_unmanaged_default_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_unmanaged_custom_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([self.custom_user], [self.custom_user, self.author_with_custom_user])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("__setting__", "AUTH_USER_MODEL")])
def test_swappable_changed(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
before = self.make_project_state([self.custom_user, self.author_with_user])
with override_settings(AUTH_USER_MODEL="thirdapp.CustomUser"):
after = self.make_project_state([self.custom_user, self.author_with_custom_user])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name='user')
fk_field = changes['testapp'][0].operations[0].field
self.assertEqual(fk_field.remote_field.model, 'thirdapp.CustomUser')
def test_add_field_with_default(self):
"""#22030 - Adding a field with a default should work."""
changes = self.get_changes([self.author_empty], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="name")
def test_custom_deconstructible(self):
"""
Two instances which deconstruct to the same value aren't considered a
change.
"""
changes = self.get_changes([self.author_name_deconstructible_1], [self.author_name_deconstructible_2])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_deconstruct_field_kwarg(self):
"""Field instances are handled correctly by nested deconstruction."""
changes = self.get_changes([self.author_name_deconstructible_3], [self.author_name_deconstructible_4])
self.assertEqual(changes, {})
def test_deconstructible_list(self):
"""Nested deconstruction descends into lists."""
# When lists contain items that deconstruct to identical values, those lists
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed lists should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_tuple(self):
"""Nested deconstruction descends into tuples."""
# When tuples contain items that deconstruct to identical values, those tuples
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed tuples should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_dict(self):
"""Nested deconstruction descends into dict values."""
# When dicts contain items whose values deconstruct to identical values,
# those dicts should be considered equal for the purpose of detecting
# state changes (even if the original values are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed dicts should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_3]
)
self.assertEqual(len(changes), 1)
def test_nested_deconstructible_objects(self):
"""
Nested deconstruction is applied recursively to the args/kwargs of
deconstructed objects.
"""
# If the items within a deconstructed object's args/kwargs have the same
# deconstructed values - whether or not the items themselves are different
# instances - then the object as a whole is regarded as unchanged.
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_2]
)
self.assertEqual(changes, {})
# Differences that exist solely within the args list of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_arg]
)
self.assertEqual(len(changes), 1)
# Additional args should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_arg]
)
self.assertEqual(len(changes), 1)
# Differences that exist solely within the kwargs dict of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_kwarg]
)
self.assertEqual(len(changes), 1)
# Additional kwargs should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_kwarg]
)
self.assertEqual(len(changes), 1)
def test_deconstruct_type(self):
"""
#22951 -- Uninstantiated classes with deconstruct are correctly returned
by deep_deconstruct during serialization.
"""
author = ModelState(
"testapp",
"Author",
[
("id", models.AutoField(primary_key=True)),
("name", models.CharField(
max_length=200,
# IntegerField intentionally not instantiated.
default=models.IntegerField,
))
],
)
changes = self.get_changes([], [author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
def test_replace_string_with_foreignkey(self):
"""
#22300 - Adding an FK in the same "spot" as a deleted CharField should
work.
"""
changes = self.get_changes([self.author_with_publisher_string], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publisher_name")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publisher")
def test_foreign_key_removed_before_target_model(self):
"""
Removing an FK and the model it targets in the same change must remove
the FK field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.author_with_publisher, self.publisher], [self.author_name]
) # removes both the model and FK
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Publisher")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_many_to_many(self, mocked_ask_method):
"""#22435 - Adding a ManyToManyField should not prompt for a default."""
changes = self.get_changes([self.author_empty, self.publisher], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_alter_many_to_many(self):
changes = self.get_changes(
[self.author_with_m2m, self.publisher], [self.author_with_m2m_blank, self.publisher]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_create_with_through_model(self):
"""
Adding a m2m with a through model and the models that use it should be
ordered correctly.
"""
changes = self.get_changes([], [self.author_with_m2m_through, self.publisher, self.contract])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
'CreateModel', 'CreateModel', 'CreateModel', 'AddField',
])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Contract')
self.assertOperationAttributes(changes, 'testapp', 0, 3, model_name='author', name='publishers')
def test_many_to_many_removed_before_through_model(self):
"""
Removing a ManyToManyField and the "through" model in the same change
must remove the field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.book_with_no_author, self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
def test_many_to_many_removed_before_through_model_2(self):
"""
Removing a model that contains a ManyToManyField and the "through" model
in the same change must remove the field before the model to maintain
consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
self.assertOperationAttributes(changes, 'otherapp', 0, 2, name='Book')
def test_m2m_w_through_multistep_remove(self):
"""
A model with a m2m field that specifies a "through" model cannot be
removed in the same migration as that through model as the schema will
pass through an inconsistent state. The autodetector should produce two
migrations to avoid this issue.
"""
changes = self.get_changes([self.author_with_m2m_through, self.publisher, self.contract], [self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
"RemoveField", "RemoveField", "DeleteModel", "DeleteModel"
])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="publisher", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 3, name="Contract")
def test_concrete_field_changed_to_many_to_many(self):
"""
#23938 - Changing a concrete field into a ManyToManyField
first removes the concrete field and then adds the m2m field.
"""
changes = self.get_changes([self.author_with_former_m2m], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publishers", model_name='author')
def test_many_to_many_changed_to_concrete_field(self):
"""
#23938 - Changing a ManyToManyField into a concrete field
first removes the m2m field and then adds the concrete field.
"""
changes = self.get_changes([self.author_with_m2m, self.publisher], [self.author_with_former_m2m])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "AddField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Publisher')
self.assertOperationFieldAttributes(changes, 'testapp', 0, 1, max_length=100)
def test_non_circular_foreignkey_dependency_removal(self):
"""
If two models with a ForeignKey from one to the other are removed at the
same time, the autodetector should remove them in the correct order.
"""
changes = self.get_changes([self.author_with_publisher, self.publisher_with_author], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "DeleteModel", "DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='publisher')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Publisher")
def test_alter_model_options(self):
"""Changing a model's options should make a change."""
changes = self.get_changes([self.author_empty], [self.author_with_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, options={
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
# Changing them back to empty should also make a change
changes = self.get_changes([self.author_with_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", options={})
def test_alter_model_options_proxy(self):
"""Changing a proxy model's options should also make a change."""
changes = self.get_changes(
[self.author_proxy, self.author_empty], [self.author_proxy_options, self.author_empty]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorproxy", options={
"verbose_name": "Super Author"
})
def test_set_alter_order_with_respect_to(self):
"""Setting order_with_respect_to adds a field."""
changes = self.get_changes([self.book, self.author_with_book], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to="book")
def test_add_alter_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the FK too does
things in the right order.
"""
changes = self.get_changes([self.author_name], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name="book")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author", order_with_respect_to="book")
def test_remove_alter_order_with_respect_to(self):
"""
Removing order_with_respect_to when removing the FK too does
things in the right order.
"""
changes = self.get_changes([self.book, self.author_with_book_order_wrt], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo", "RemoveField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to=None)
self.assertOperationAttributes(changes, 'testapp', 0, 1, model_name="author", name="book")
def test_add_model_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the whole model
does things in the right order.
"""
changes = self.get_changes([], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name="Author", options={'order_with_respect_to': 'book'}
)
self.assertNotIn("_order", [name for name, field in changes['testapp'][0].operations[0].fields])
def test_add_model_order_with_respect_to_index_foo_together(self):
changes = self.get_changes([], [
self.book,
ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
}),
])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
},
)
def test_add_model_order_with_respect_to_index_constraint(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes([], [self.book, after])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'CreateModel', operation,
])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={'order_with_respect_to': 'book'},
)
def test_set_alter_order_with_respect_to_index_constraint_foo_together(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
('AlterIndexTogether', {'index_together': {('name', '_order')}}),
('AlterUniqueTogether', {'unique_together': {('id', '_order')}}),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes(
[self.book, self.author_with_book],
[self.book, after],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterOrderWithRespectTo', operation,
])
def test_alter_model_managers(self):
"""
Changing the model managers adds a new operation.
"""
changes = self.get_changes([self.other_pony], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["AlterModelManagers"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
self.assertEqual(changes['otherapp'][0].operations[0].managers[1][1].args, ('a', 'b', 1, 2))
self.assertEqual(changes['otherapp'][0].operations[0].managers[2][1].args, ('x', 'y', 3, 4))
def test_swappable_first_inheritance(self):
"""Swappable models get their CreateModel first."""
changes = self.get_changes([], [self.custom_user, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_default_related_name_option(self):
model_state = ModelState('app', 'model', [
('id', models.AutoField(primary_key=True)),
], options={'default_related_name': 'related_name'})
changes = self.get_changes([], [model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['CreateModel'])
self.assertOperationAttributes(
changes, 'app', 0, 0, name='model',
options={'default_related_name': 'related_name'},
)
altered_model_state = ModelState('app', 'Model', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes([model_state], [altered_model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterModelOptions'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='model', options={})
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable_first_setting(self):
"""Swappable models get their CreateModel first."""
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([], [self.custom_user_no_inherit, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_bases_first(self):
"""Bases of other models come first."""
changes = self.get_changes([], [self.aardvark_based_on_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_bases_first_mixed_case_app_label(self):
app_label = 'MiXedCaseApp'
changes = self.get_changes([], [
ModelState(app_label, 'owner', [
('id', models.AutoField(primary_key=True)),
]),
ModelState(app_label, 'place', [
('id', models.AutoField(primary_key=True)),
('owner', models.ForeignKey('MiXedCaseApp.owner', models.CASCADE)),
]),
ModelState(app_label, 'restaurant', [], bases=('MiXedCaseApp.place',)),
])
self.assertNumberMigrations(changes, app_label, 1)
self.assertOperationTypes(changes, app_label, 0, [
'CreateModel', 'CreateModel', 'CreateModel',
])
self.assertOperationAttributes(changes, app_label, 0, 0, name='owner')
self.assertOperationAttributes(changes, app_label, 0, 1, name='place')
self.assertOperationAttributes(changes, app_label, 0, 2, name='restaurant')
def test_multiple_bases(self):
"""#23956 - Inheriting models doesn't move *_ptr fields into AddField operations."""
A = ModelState("app", "A", [("a_id", models.AutoField(primary_key=True))])
B = ModelState("app", "B", [("b_id", models.AutoField(primary_key=True))])
C = ModelState("app", "C", [], bases=("app.A", "app.B"))
D = ModelState("app", "D", [], bases=("app.A", "app.B"))
E = ModelState("app", "E", [], bases=("app.A", "app.B"))
changes = self.get_changes([], [A, B, C, D, E])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "app", 1)
self.assertOperationTypes(changes, "app", 0, [
"CreateModel", "CreateModel", "CreateModel", "CreateModel", "CreateModel"
])
self.assertOperationAttributes(changes, "app", 0, 0, name="A")
self.assertOperationAttributes(changes, "app", 0, 1, name="B")
self.assertOperationAttributes(changes, "app", 0, 2, name="C")
self.assertOperationAttributes(changes, "app", 0, 3, name="D")
self.assertOperationAttributes(changes, "app", 0, 4, name="E")
def test_proxy_bases_first(self):
"""Bases of proxies come first."""
changes = self.get_changes([], [self.author_empty, self.author_proxy, self.author_proxy_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="AuthorProxy")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="AAuthorProxyProxy")
def test_pk_fk_included(self):
"""
A relation used as the primary key is kept as part of CreateModel.
"""
changes = self.get_changes([], [self.aardvark_pk_fk_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_first_dependency(self):
"""
A dependency to an app with no migrations uses __first__.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "__first__")])
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_last_dependency(self):
"""
A dependency to an app with existing migrations uses the
last migration of that app.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "0002_second")])
def test_alter_fk_before_model_deletion(self):
"""
ForeignKeys are altered _before_ the model they used to
refer to are deleted.
"""
changes = self.get_changes(
[self.author_name, self.publisher_with_author],
[self.aardvark_testapp, self.publisher_with_aardvark_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "AlterField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Aardvark")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="Author")
def test_fk_dependency_other_app(self):
"""
#23100 - ForeignKeys correctly depend on other apps' models.
"""
changes = self.get_changes([self.author_name, self.book], [self.author_with_book, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="book")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "__first__")])
def test_alter_field_to_fk_dependency_other_app(self):
changes = self.get_changes(
[self.author_empty, self.book_with_no_author_fk],
[self.author_empty, self.book],
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', '__first__')])
def test_circular_dependency_mixed_addcreate(self):
"""
#23315 - The dependency resolver knows to put all CreateModel
before AddField and not become unsolvable.
"""
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("country", models.ForeignKey("b.DeliveryCountry", models.CASCADE)),
])
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
])
apackage = ModelState("b", "APackage", [
("id", models.AutoField(primary_key=True)),
("person", models.ForeignKey("a.Person", models.CASCADE)),
])
country = ModelState("b", "DeliveryCountry", [
("id", models.AutoField(primary_key=True)),
])
changes = self.get_changes([], [address, person, apackage, country])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel", "CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertOperationTypes(changes, 'b', 0, ["CreateModel", "CreateModel"])
@override_settings(AUTH_USER_MODEL="a.Tenant")
def test_circular_dependency_swappable(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
tenant = ModelState("a", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("b.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
address = ModelState("b", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('a', 'auto_1'), ('b', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('__setting__', 'AUTH_USER_MODEL')])
@override_settings(AUTH_USER_MODEL="b.Tenant")
def test_circular_dependency_swappable2(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models but with the swappable not being the first migrated
model.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
tenant = ModelState("b", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("a.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('__setting__', 'AUTH_USER_MODEL'), ('a', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('a', 'auto_1')])
@override_settings(AUTH_USER_MODEL="a.Person")
def test_circular_dependency_swappable_self(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
("parent1", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE, related_name='children'))
])
changes = self.get_changes([], [person])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'a', 0, [])
@override_settings(AUTH_USER_MODEL='a.User')
def test_swappable_circular_multi_mti(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
parent = ModelState('a', 'Parent', [
('user', models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE))
])
child = ModelState('a', 'Child', [], bases=('a.Parent',))
user = ModelState('a', 'User', [], bases=(AbstractBaseUser, 'a.Child'))
changes = self.get_changes([], [parent, child, user])
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ['CreateModel', 'CreateModel', 'CreateModel', 'AddField'])
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and blank `CharField` or `TextField`
without default should not prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_blank])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition')
def test_add_non_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and non-blank `CharField` or `TextField`
without default should prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_non_blank])
self.assertEqual(mocked_ask_method.call_count, 2)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
def test_mti_inheritance_model_removal(self):
Animal = ModelState('app', 'Animal', [
("id", models.AutoField(primary_key=True)),
])
Dog = ModelState('app', 'Dog', [], bases=('app.Animal',))
changes = self.get_changes([Animal, Dog], [Animal])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['DeleteModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='Dog')
def test_add_model_with_field_removed_from_base_model(self):
"""
Removing a base field takes place before adding a new inherited model
that has a field with the same name.
"""
before = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
('title', models.CharField(max_length=200)),
]),
]
after = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'book', [
('title', models.CharField(max_length=200)),
], bases=('app.readable',)),
]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RemoveField', 'CreateModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='title', model_name='readable')
self.assertOperationAttributes(changes, 'app', 0, 1, name='book')
def test_parse_number(self):
tests = [
('no_number', None),
('0001_initial', 1),
('0002_model3', 2),
('0002_auto_20380101_1112', 2),
('0002_squashed_0003', 3),
('0002_model2_squashed_0003_other4', 3),
('0002_squashed_0003_squashed_0004', 4),
('0002_model2_squashed_0003_other4_squashed_0005_other6', 5),
('0002_custom_name_20380101_1112_squashed_0003_model', 3),
('2_squashed_4', 4),
]
for migration_name, expected_number in tests:
with self.subTest(migration_name=migration_name):
self.assertEqual(
MigrationAutodetector.parse_number(migration_name),
expected_number,
)
class MigrationSuggestNameTests(SimpleTestCase):
def test_no_operations(self):
class Migration(migrations.Migration):
operations = []
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_no_operations_initial(self):
class Migration(migrations.Migration):
initial = True
operations = []
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_single_operation(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('Person', fields=[])]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person')
class Migration(migrations.Migration):
operations = [migrations.DeleteModel('Person')]
migration = Migration('0002_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'delete_person')
def test_single_operation_long_name(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('A' * 53, fields=[])]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'a' * 53)
def test_two_operations(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.DeleteModel('Animal'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_delete_animal')
def test_two_create_models(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_animal')
def test_two_create_models_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_many_operations_suffix(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person1', fields=[]),
migrations.CreateModel('Person2', fields=[]),
migrations.CreateModel('Person3', fields=[]),
migrations.DeleteModel('Person4'),
migrations.DeleteModel('Person5'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(
migration.suggest_name(),
'person1_person2_person3_delete_person4_and_more',
)
def test_operation_with_no_suggested_name(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.RunSQL('SELECT 1 FROM person;'),
]
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_none_name(self):
class Migration(migrations.Migration):
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
def test_none_name_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_auto(self):
migration = migrations.Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
|
c18d7dd1a22a22ef067b5afef46339204a9f91fa310931ba10c1ecb76b139b5b | import datetime
import os
import re
import unittest
from unittest import mock
from urllib.parse import parse_qsl, urljoin, urlparse
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
try:
import pytz
except ImportError:
pytz = None
from django.contrib import admin
from django.contrib.admin import AdminSite, ModelAdmin
from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME
from django.contrib.admin.models import ADDITION, DELETION, LogEntry
from django.contrib.admin.options import TO_FIELD_VAR
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.admin.utils import quote
from django.contrib.admin.views.main import IS_POPUP_VAR
from django.contrib.auth import REDIRECT_FIELD_NAME, get_permission_codename
from django.contrib.auth.models import Group, Permission, User
from django.contrib.contenttypes.models import ContentType
from django.core import mail
from django.core.checks import Error
from django.core.files import temp as tempfile
from django.forms.utils import ErrorList
from django.template.response import TemplateResponse
from django.test import (
TestCase, modify_settings, override_settings, skipUnlessDBFeature,
)
from django.test.utils import override_script_prefix
from django.urls import NoReverseMatch, resolve, reverse
from django.utils import formats, translation
from django.utils.cache import get_max_age
from django.utils.encoding import iri_to_uri
from django.utils.html import escape
from django.utils.http import urlencode
from . import customadmin
from .admin import CityAdmin, site, site2
from .models import (
Actor, AdminOrderedAdminMethod, AdminOrderedCallable, AdminOrderedField,
AdminOrderedModelMethod, Album, Answer, Answer2, Article, BarAccount, Book,
Bookmark, Box, Category, Chapter, ChapterXtra1, ChapterXtra2, Character,
Child, Choice, City, Collector, Color, ComplexSortedPerson, CoverLetter,
CustomArticle, CyclicOne, CyclicTwo, DooHickey, Employee, EmptyModel,
Fabric, FancyDoodad, FieldOverridePost, FilteredManager, FooAccount,
FoodDelivery, FunkyTag, Gallery, Grommet, Inquisition, Language, Link,
MainPrepopulated, Media, ModelWithStringPrimaryKey, OtherStory, Paper,
Parent, ParentWithDependentChildren, ParentWithUUIDPK, Person, Persona,
Picture, Pizza, Plot, PlotDetails, PluggableSearchPerson, Podcast, Post,
PrePopulatedPost, Promo, Question, ReadablePizza, ReadOnlyPizza,
ReadOnlyRelatedField, Recommendation, Recommender, RelatedPrepopulated,
RelatedWithUUIDPKModel, Report, Restaurant, RowLevelChangePermissionModel,
SecretHideout, Section, ShortMessage, Simple, Song, State, Story,
SuperSecretHideout, SuperVillain, Telegram, TitleTranslation, Topping,
UnchangeableObject, UndeletableObject, UnorderedObject, UserProxy, Villain,
Vodcast, Whatsit, Widget, Worker, WorkHour,
)
ERROR_MESSAGE = "Please enter the correct username and password \
for a staff account. Note that both fields may be case-sensitive."
MULTIPART_ENCTYPE = 'enctype="multipart/form-data"'
def make_aware_datetimes(dt, iana_key):
"""Makes one aware datetime for each supported time zone provider."""
yield dt.replace(tzinfo=zoneinfo.ZoneInfo(iana_key))
if pytz is not None:
yield pytz.timezone(iana_key).localize(dt, is_dst=None)
class AdminFieldExtractionMixin:
"""
Helper methods for extracting data from AdminForm.
"""
def get_admin_form_fields(self, response):
"""
Return a list of AdminFields for the AdminForm in the response.
"""
fields = []
for fieldset in response.context['adminform']:
for field_line in fieldset:
fields.extend(field_line)
return fields
def get_admin_readonly_fields(self, response):
"""
Return the readonly fields for the response's AdminForm.
"""
return [f for f in self.get_admin_form_fields(response) if f.is_readonly]
def get_admin_readonly_field(self, response, field_name):
"""
Return the readonly field for the given field_name.
"""
admin_readonly_fields = self.get_admin_readonly_fields(response)
for field in admin_readonly_fields:
if field.field['name'] == field_name:
return field
@override_settings(ROOT_URLCONF='admin_views.urls', USE_I18N=True, LANGUAGE_CODE='en')
class AdminViewBasicTestCase(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 1',
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>',
date=datetime.datetime(2000, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 2',
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.color1 = Color.objects.create(value='Red', warm=True)
cls.color2 = Color.objects.create(value='Orange', warm=True)
cls.color3 = Color.objects.create(value='Blue', warm=False)
cls.color4 = Color.objects.create(value='Green', warm=False)
cls.fab1 = Fabric.objects.create(surface='x')
cls.fab2 = Fabric.objects.create(surface='y')
cls.fab3 = Fabric.objects.create(surface='plain')
cls.b1 = Book.objects.create(name='Book 1')
cls.b2 = Book.objects.create(name='Book 2')
cls.pro1 = Promo.objects.create(name='Promo 1', book=cls.b1)
cls.pro1 = Promo.objects.create(name='Promo 2', book=cls.b2)
cls.chap1 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b1)
cls.chap2 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b2)
cls.chap4 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b2)
cls.cx1 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='ChapterXtra1 1')
cls.cx2 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='ChapterXtra1 2')
Actor.objects.create(name='Palin', age=27)
# Post data for edit inline
cls.inline_post_data = {
"name": "Test section",
# inline data
"article_set-TOTAL_FORMS": "6",
"article_set-INITIAL_FORMS": "3",
"article_set-MAX_NUM_FORMS": "0",
"article_set-0-id": cls.a1.pk,
# there is no title in database, give one here or formset will fail.
"article_set-0-title": "Norske bostaver æøå skaper problemer",
"article_set-0-content": "<p>Middle content</p>",
"article_set-0-date_0": "2008-03-18",
"article_set-0-date_1": "11:54:58",
"article_set-0-section": cls.s1.pk,
"article_set-1-id": cls.a2.pk,
"article_set-1-title": "Need a title.",
"article_set-1-content": "<p>Oldest content</p>",
"article_set-1-date_0": "2000-03-18",
"article_set-1-date_1": "11:54:58",
"article_set-2-id": cls.a3.pk,
"article_set-2-title": "Need a title.",
"article_set-2-content": "<p>Newest content</p>",
"article_set-2-date_0": "2009-03-18",
"article_set-2-date_1": "11:54:58",
"article_set-3-id": "",
"article_set-3-title": "",
"article_set-3-content": "",
"article_set-3-date_0": "",
"article_set-3-date_1": "",
"article_set-4-id": "",
"article_set-4-title": "",
"article_set-4-content": "",
"article_set-4-date_0": "",
"article_set-4-date_1": "",
"article_set-5-id": "",
"article_set-5-title": "",
"article_set-5-content": "",
"article_set-5-date_0": "",
"article_set-5-date_1": "",
}
def setUp(self):
self.client.force_login(self.superuser)
def assertContentBefore(self, response, text1, text2, failing_msg=None):
"""
Testing utility asserting that text1 appears before text2 in response
content.
"""
self.assertEqual(response.status_code, 200)
self.assertLess(
response.content.index(text1.encode()),
response.content.index(text2.encode()),
(failing_msg or '') + '\nResponse:\n' + response.content.decode(response.charset)
)
class AdminViewBasicTest(AdminViewBasicTestCase):
def test_trailing_slash_required(self):
"""
If you leave off the trailing slash, app should redirect and add it.
"""
add_url = reverse('admin:admin_views_article_add')
response = self.client.get(add_url[:-1])
self.assertRedirects(response, add_url, status_code=301)
def test_basic_add_GET(self):
"""
A smoke test to ensure GET on the add_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_add_with_GET_args(self):
response = self.client.get(reverse('admin:admin_views_section_add'), {'name': 'My Section'})
self.assertContains(
response, 'value="My Section"',
msg_prefix="Couldn't find an input with the right value in the response"
)
def test_basic_edit_GET(self):
"""
A smoke test to ensure GET on the change_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_basic_edit_GET_string_PK(self):
"""
GET on the change_view (when passing a string as the PK argument for a
model with an integer PK field) redirects to the index page with a
message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(quote("abc/<b>"),)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['section with ID “abc/<b>” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_edit_GET_old_url_redirect(self):
"""
The change URL changed in Django 1.9, but the old one still redirects.
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,)).replace('change/', '')
)
self.assertRedirects(response, reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
def test_basic_inheritance_GET_string_PK(self):
"""
GET on the change_view (for inherited models) redirects to the index
page with a message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_supervillain_change', args=('abc',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['super villain with ID “abc” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_add_POST(self):
"""
A smoke test to ensure POST on add_view works.
"""
post_data = {
"name": "Another Section",
# inline data
"article_set-TOTAL_FORMS": "3",
"article_set-INITIAL_FORMS": "0",
"article_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_section_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_popup_add_POST(self):
"""HTTP response from a popup is properly escaped."""
post_data = {
IS_POPUP_VAR: '1',
'title': 'title with a new\nline',
'content': 'some content',
'date_0': '2010-09-10',
'date_1': '14:55:39',
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data)
self.assertContains(response, 'title with a new\\nline')
def test_basic_edit_POST(self):
"""
A smoke test to ensure POST on edit_view works.
"""
url = reverse('admin:admin_views_section_change', args=(self.s1.pk,))
response = self.client.post(url, self.inline_post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as(self):
"""
Test "save as".
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-3-section": "1",
"article_set-4-section": "1",
"article_set-5-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as_delete_inline(self):
"""
Should be able to "Save as new" while also deleting an inline.
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-2-DELETE": "1",
"article_set-3-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302)
# started with 3 articles, one was deleted.
self.assertEqual(Section.objects.latest('id').article_set.count(), 2)
def test_change_list_column_field_classes(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
# callables display the callable name.
self.assertContains(response, 'column-callable_year')
self.assertContains(response, 'field-callable_year')
# lambdas display as "lambda" + index that they appear in list_display.
self.assertContains(response, 'column-lambda8')
self.assertContains(response, 'field-lambda8')
def test_change_list_sorting_callable(self):
"""
Ensure we can sort on a list_display field that is a callable
(column 2 is callable_year in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 2})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on callable are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on callable are out of order."
)
def test_change_list_sorting_property(self):
"""
Sort on a list_display field that is a property (column 10 is
a property in Article model).
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 10})
self.assertContentBefore(
response,
'Oldest content',
'Middle content',
'Results of sorting on property are out of order.',
)
self.assertContentBefore(
response,
'Middle content',
'Newest content',
'Results of sorting on property are out of order.',
)
def test_change_list_sorting_callable_query_expression(self):
"""Query expressions may be used for admin_order_field."""
tests = [
('order_by_expression', 9),
('order_by_f_expression', 12),
('order_by_orderby_expression', 13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_callable_query_expression_reverse(self):
tests = [
('order_by_expression', -9),
('order_by_f_expression', -12),
('order_by_orderby_expression', -13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Newest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_model(self):
"""
Ensure we can sort on a list_display field that is a Model method
(column 3 is 'model_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-3'})
self.assertContentBefore(
response, 'Newest content', 'Middle content',
"Results of sorting on Model method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
"Results of sorting on Model method are out of order."
)
def test_change_list_sorting_model_admin(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin method
(column 4 is 'modeladmin_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '4'})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_model_admin_reverse(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin
method in reverse order (i.e. admin_order_field uses the '-' prefix)
(column 6 is 'model_year_reverse' in ArticleAdmin)
"""
td = '<td class="field-model_property_year">%s</td>'
td_2000, td_2008, td_2009 = td % 2000, td % 2008, td % 2009
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '6'})
self.assertContentBefore(
response, td_2009, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2000,
"Results of sorting on ModelAdmin method are out of order."
)
# Let's make sure the ordering is right and that we don't get a
# FieldError when we change to descending order
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-6'})
self.assertContentBefore(
response, td_2000, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2009,
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_multiple(self):
p1 = Person.objects.create(name="Chris", gender=1, alive=True)
p2 = Person.objects.create(name="Chris", gender=2, alive=True)
p3 = Person.objects.create(name="Bob", gender=1, alive=True)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
# Sort by name, gender
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '1.2'})
self.assertContentBefore(response, link3, link1)
self.assertContentBefore(response, link1, link2)
# Sort by gender descending, name
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '-2.1'})
self.assertContentBefore(response, link2, link3)
self.assertContentBefore(response, link3, link1)
def test_change_list_sorting_preserve_queryset_ordering(self):
"""
If no ordering is defined in `ModelAdmin.ordering` or in the query
string, then the underlying order of the queryset should not be
changed, even if it is defined in `Modeladmin.get_queryset()`.
Refs #11868, #7309.
"""
p1 = Person.objects.create(name="Amy", gender=1, alive=True, age=80)
p2 = Person.objects.create(name="Bob", gender=1, alive=True, age=70)
p3 = Person.objects.create(name="Chris", gender=2, alive=False, age=60)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
response = self.client.get(reverse('admin:admin_views_person_changelist'), {})
self.assertContentBefore(response, link3, link2)
self.assertContentBefore(response, link2, link1)
def test_change_list_sorting_model_meta(self):
# Test ordering on Model Meta is respected
l1 = Language.objects.create(iso='ur', name='Urdu')
l2 = Language.objects.create(iso='ar', name='Arabic')
link1 = reverse('admin:admin_views_language_change', args=(quote(l1.pk),))
link2 = reverse('admin:admin_views_language_change', args=(quote(l2.pk),))
response = self.client.get(reverse('admin:admin_views_language_changelist'), {})
self.assertContentBefore(response, link2, link1)
# Test we can override with query string
response = self.client.get(reverse('admin:admin_views_language_changelist'), {'o': '-1'})
self.assertContentBefore(response, link1, link2)
def test_change_list_sorting_override_model_admin(self):
# Test ordering on Model Admin is respected, and overrides Model Meta
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_podcast_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
def test_multiple_sort_same_field(self):
# The changelist displays the correct columns if two columns correspond
# to the same ordering field.
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(quote(p1.pk),))
link2 = reverse('admin:admin_views_podcast_change', args=(quote(p2.pk),))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
p1 = ComplexSortedPerson.objects.create(name="Bob", age=10)
p2 = ComplexSortedPerson.objects.create(name="Amy", age=20)
link1 = reverse('admin:admin_views_complexsortedperson_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_complexsortedperson_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_complexsortedperson_changelist'), {})
# Should have 5 columns (including action checkbox col)
self.assertContains(response, '<th scope="col"', count=5)
self.assertContains(response, 'Name')
self.assertContains(response, 'Colored name')
# Check order
self.assertContentBefore(response, 'Name', 'Colored name')
# Check sorting - should be by name
self.assertContentBefore(response, link2, link1)
def test_sort_indicators_admin_order(self):
"""
The admin shows default sort indicators for all kinds of 'ordering'
fields: field names, method on the model admin and model itself, and
other callables. See #17252.
"""
models = [(AdminOrderedField, 'adminorderedfield'),
(AdminOrderedModelMethod, 'adminorderedmodelmethod'),
(AdminOrderedAdminMethod, 'adminorderedadminmethod'),
(AdminOrderedCallable, 'adminorderedcallable')]
for model, url in models:
model.objects.create(stuff='The Last Item', order=3)
model.objects.create(stuff='The First Item', order=1)
model.objects.create(stuff='The Middle Item', order=2)
response = self.client.get(reverse('admin:admin_views_%s_changelist' % url), {})
# Should have 3 columns including action checkbox col.
self.assertContains(response, '<th scope="col"', count=3, msg_prefix=url)
# Check if the correct column was selected. 2 is the index of the
# 'order' column in the model admin's 'list_display' with 0 being
# the implicit 'action_checkbox' and 1 being the column 'stuff'.
self.assertEqual(response.context['cl'].get_ordering_field_columns(), {2: 'asc'})
# Check order of records.
self.assertContentBefore(response, 'The First Item', 'The Middle Item')
self.assertContentBefore(response, 'The Middle Item', 'The Last Item')
def test_has_related_field_in_list_display_fk(self):
"""Joins shouldn't be performed for <FK>_id fields in list display."""
state = State.objects.create(name='Karnataka')
City.objects.create(state=state, name='Bangalore')
response = self.client.get(reverse('admin:admin_views_city_changelist'), {})
response.context['cl'].list_display = ['id', 'name', 'state']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['id', 'name', 'state_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_has_related_field_in_list_display_o2o(self):
"""Joins shouldn't be performed for <O2O>_id fields in list display."""
media = Media.objects.create(name='Foo')
Vodcast.objects.create(media=media)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'), {})
response.context['cl'].list_display = ['media']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['media_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_limited_filter(self):
"""Ensure admin changelist filters do not contain objects excluded via limit_choices_to.
This also tests relation-spanning filters (e.g. 'color__value').
"""
response = self.client.get(reverse('admin:admin_views_thing_changelist'))
self.assertContains(
response, '<div id="changelist-filter">',
msg_prefix="Expected filter not found in changelist view"
)
self.assertNotContains(
response, '<a href="?color__id__exact=3">Blue</a>',
msg_prefix="Changelist filter not correctly limited by limit_choices_to"
)
def test_relation_spanning_filters(self):
changelist_url = reverse('admin:admin_views_chapterxtra1_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '<div id="changelist-filter">')
filters = {
'chap__id__exact': {
'values': [c.id for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.id == value,
},
'chap__title': {
'values': [c.title for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.title == value,
},
'chap__book__id__exact': {
'values': [b.id for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.id == value,
},
'chap__book__name': {
'values': [b.name for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.name == value,
},
'chap__book__promo__id__exact': {
'values': [p.id for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(id=value).exists(),
},
'chap__book__promo__name': {
'values': [p.name for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(name=value).exists(),
},
# A forward relation (book) after a reverse relation (promo).
'guest_author__promo__book__id__exact': {
'values': [p.id for p in Book.objects.all()],
'test': lambda obj, value: obj.guest_author.promo_set.filter(book=value).exists(),
},
}
for filter_path, params in filters.items():
for value in params['values']:
query_string = urlencode({filter_path: value})
# ensure filter link exists
self.assertContains(response, '<a href="?%s"' % query_string)
# ensure link works
filtered_response = self.client.get('%s?%s' % (changelist_url, query_string))
self.assertEqual(filtered_response.status_code, 200)
# ensure changelist contains only valid objects
for obj in filtered_response.context['cl'].queryset.all():
self.assertTrue(params['test'](obj, value))
def test_incorrect_lookup_parameters(self):
"""Ensure incorrect lookup parameters are handled gracefully."""
changelist_url = reverse('admin:admin_views_thing_changelist')
response = self.client.get(changelist_url, {'notarealfield': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Spanning relationships through a nonexistent related object (Refs #16716)
response = self.client.get(changelist_url, {'notarealfield__whatever': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
response = self.client.get(changelist_url, {'color__id__exact': 'StringNotInteger!'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Regression test for #18530
response = self.client.get(changelist_url, {'pub_date__gte': 'foo'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
def test_isnull_lookups(self):
"""Ensure is_null is handled correctly."""
Article.objects.create(title="I Could Go Anywhere", content="Versatile", date=datetime.datetime.now())
changelist_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '4 articles')
response = self.client.get(changelist_url, {'section__isnull': 'false'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': '0'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': 'true'})
self.assertContains(response, '1 article')
response = self.client.get(changelist_url, {'section__isnull': '1'})
self.assertContains(response, '1 article')
def test_logout_and_password_change_URLs(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, '<a href="%s">' % reverse('admin:logout'))
self.assertContains(response, '<a href="%s">' % reverse('admin:password_change'))
def test_named_group_field_choices_change_list(self):
"""
Ensures the admin changelist shows correct values in the relevant column
for rows corresponding to instances of a model in which a named group
has been used in the choices option of a field.
"""
link1 = reverse('admin:admin_views_fabric_change', args=(self.fab1.pk,))
link2 = reverse('admin:admin_views_fabric_change', args=(self.fab2.pk,))
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist table isn't showing the right human-readable values "
"set by a model field 'choices' option named group."
)
self.assertContains(response, '<a href="%s">Horizontal</a>' % link1, msg_prefix=fail_msg, html=True)
self.assertContains(response, '<a href="%s">Vertical</a>' % link2, msg_prefix=fail_msg, html=True)
def test_named_group_field_choices_filter(self):
"""
Ensures the filter UI shows correctly when at least one named group has
been used in the choices option of a model field.
"""
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist filter isn't showing options contained inside a model "
"field 'choices' option named group."
)
self.assertContains(response, '<div id="changelist-filter">')
self.assertContains(
response, '<a href="?surface__exact=x" title="Horizontal">Horizontal</a>',
msg_prefix=fail_msg, html=True
)
self.assertContains(
response, '<a href="?surface__exact=y" title="Vertical">Vertical</a>',
msg_prefix=fail_msg, html=True
)
def test_change_list_null_boolean_display(self):
Post.objects.create(public=None)
response = self.client.get(reverse('admin:admin_views_post_changelist'))
self.assertContains(response, 'icon-unknown.svg')
def test_display_decorator_with_boolean_and_empty_value(self):
msg = (
'The boolean and empty_value arguments to the @display decorator '
'are mutually exclusive.'
)
with self.assertRaisesMessage(ValueError, msg):
class BookAdmin(admin.ModelAdmin):
@admin.display(boolean=True, empty_value='(Missing)')
def is_published(self, obj):
return obj.publish_date is not None
def test_i18n_language_non_english_default(self):
"""
Check if the JavaScript i18n view returns an empty language catalog
if the default language is non-English but the selected language
is English. See #13388 and #3594 for more details.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('en-us'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, 'Choisir une heure')
def test_i18n_language_non_english_fallback(self):
"""
Makes sure that the fallback language is still working properly
in cases where the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertContains(response, 'Choisir une heure')
def test_jsi18n_with_context(self):
response = self.client.get(reverse('admin-extra-context:jsi18n'))
self.assertEqual(response.status_code, 200)
def test_jsi18n_format_fallback(self):
"""
The JavaScript i18n view doesn't return localized date/time formats
when the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='ru'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, '%d.%m.%Y %H:%M:%S')
self.assertContains(response, '%Y-%m-%d %H:%M:%S')
def test_disallowed_filtering(self):
with self.assertLogs('django.security.DisallowedModelAdminLookup', 'ERROR'):
response = self.client.get(
"%s?owner__email__startswith=fuzzy" % reverse('admin:admin_views_album_changelist')
)
self.assertEqual(response.status_code, 400)
# Filters are allowed if explicitly included in list_filter
response = self.client.get("%s?color__value__startswith=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
response = self.client.get("%s?color__value=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
# Filters should be allowed if they involve a local field without the
# need to allow them in list_filter or date_hierarchy.
response = self.client.get("%s?age__gt=30" % reverse('admin:admin_views_person_changelist'))
self.assertEqual(response.status_code, 200)
e1 = Employee.objects.create(name='Anonymous', gender=1, age=22, alive=True, code='123')
e2 = Employee.objects.create(name='Visitor', gender=2, age=19, alive=True, code='124')
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e1)
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e2)
response = self.client.get(reverse('admin:admin_views_workhour_changelist'))
self.assertContains(response, 'employee__person_ptr__exact')
response = self.client.get("%s?employee__person_ptr__exact=%d" % (
reverse('admin:admin_views_workhour_changelist'), e1.pk)
)
self.assertEqual(response.status_code, 200)
def test_disallowed_to_field(self):
url = reverse('admin:admin_views_section_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'missing_field'})
self.assertEqual(response.status_code, 400)
# Specifying a field that is not referred by any other model registered
# to this admin site should raise an exception.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(reverse('admin:admin_views_section_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
# #23839 - Primary key should always be allowed, even if the referenced model isn't registered.
response = self.client.get(reverse('admin:admin_views_notreferenced_changelist'), {TO_FIELD_VAR: 'id'})
self.assertEqual(response.status_code, 200)
# #23915 - Specifying a field referenced by another model though a m2m should be allowed.
response = self.client.get(reverse('admin:admin_views_recipe_changelist'), {TO_FIELD_VAR: 'rname'})
self.assertEqual(response.status_code, 200)
# #23604, #23915 - Specifying a field referenced through a reverse m2m relationship should be allowed.
response = self.client.get(reverse('admin:admin_views_ingredient_changelist'), {TO_FIELD_VAR: 'iname'})
self.assertEqual(response.status_code, 200)
# #23329 - Specifying a field that is not referred by any other model directly registered
# to this admin site but registered through inheritance should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyparent_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #23431 - Specifying a field that is only referred to by a inline of a registered
# model should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyinline_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #25622 - Specifying a field of a model only referred by a generic
# relation should raise DisallowedModelAdminToField.
url = reverse('admin:admin_views_referencedbygenrel_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'object_id'})
self.assertEqual(response.status_code, 400)
# We also want to prevent the add, change, and delete views from
# leaking a disallowed field value.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(reverse('admin:admin_views_section_add'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
section = Section.objects.create()
url = reverse('admin:admin_views_section_change', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
url = reverse('admin:admin_views_section_delete', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
def test_allowed_filtering_15103(self):
"""
Regressions test for ticket 15103 - filtering on fields defined in a
ForeignKey 'limit_choices_to' should be allowed, otherwise raw_id_fields
can break.
"""
# Filters should be allowed if they are defined on a ForeignKey pointing to this model
url = "%s?leader__name=Palin&leader__age=27" % reverse('admin:admin_views_inquisition_changelist')
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
def test_popup_dismiss_related(self):
"""
Regression test for ticket 20664 - ensure the pk is properly quoted.
"""
actor = Actor.objects.create(name="Palin", age=27)
response = self.client.get("%s?%s" % (reverse('admin:admin_views_actor_changelist'), IS_POPUP_VAR))
self.assertContains(response, 'data-popup-opener="%s"' % actor.pk)
def test_hide_change_password(self):
"""
Tests if the "change password" link in the admin is hidden if the User
does not have a usable password set.
(against 9bea85795705d015cdadc82c68b99196a8554f5c)
"""
user = User.objects.get(username='super')
user.set_unusable_password()
user.save()
self.client.force_login(user)
response = self.client.get(reverse('admin:index'))
self.assertNotContains(
response, reverse('admin:password_change'),
msg_prefix='The "change password" link should not be displayed if a user does not have a usable password.'
)
def test_change_view_with_show_delete_extra_context(self):
"""
The 'show_delete' context variable in the admin's change view controls
the display of the delete button.
"""
instance = UndeletableObject.objects.create(name='foo')
response = self.client.get(reverse('admin:admin_views_undeletableobject_change', args=(instance.pk,)))
self.assertNotContains(response, 'deletelink')
def test_change_view_logs_m2m_field_changes(self):
"""Changes to ManyToManyFields are included in the object's history."""
pizza = ReadablePizza.objects.create(name='Cheese')
cheese = Topping.objects.create(name='cheese')
post_data = {'name': pizza.name, 'toppings': [cheese.pk]}
response = self.client.post(reverse('admin:admin_views_readablepizza_change', args=(pizza.pk,)), post_data)
self.assertRedirects(response, reverse('admin:admin_views_readablepizza_changelist'))
pizza_ctype = ContentType.objects.get_for_model(ReadablePizza, for_concrete_model=False)
log = LogEntry.objects.filter(content_type=pizza_ctype, object_id=pizza.pk).first()
self.assertEqual(log.get_change_message(), 'Changed Toppings.')
def test_allows_attributeerror_to_bubble_up(self):
"""
AttributeErrors are allowed to bubble when raised inside a change list
view. Requires a model to be created so there's something to display.
Refs: #16655, #18593, and #18747
"""
Simple.objects.create()
with self.assertRaises(AttributeError):
self.client.get(reverse('admin:admin_views_simple_changelist'))
def test_changelist_with_no_change_url(self):
"""
ModelAdmin.changelist_view shouldn't result in a NoReverseMatch if url
for change_view is removed from get_urls (#20934).
"""
o = UnchangeableObject.objects.create()
response = self.client.get(reverse('admin:admin_views_unchangeableobject_changelist'))
# Check the format of the shown object -- shouldn't contain a change link
self.assertContains(response, '<th class="field-__str__">%s</th>' % o, html=True)
def test_invalid_appindex_url(self):
"""
#21056 -- URL reversing shouldn't work for nonexistent apps.
"""
good_url = '/test_admin/admin/admin_views/'
confirm_good_url = reverse('admin:app_list',
kwargs={'app_label': 'admin_views'})
self.assertEqual(good_url, confirm_good_url)
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', kwargs={'app_label': 'this_should_fail'})
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', args=('admin_views2',))
def test_resolve_admin_views(self):
index_match = resolve('/test_admin/admin4/')
list_match = resolve('/test_admin/admin4/auth/user/')
self.assertIs(index_match.func.admin_site, customadmin.simple_site)
self.assertIsInstance(list_match.func.model_admin, customadmin.CustomPwdTemplateUserAdmin)
def test_adminsite_display_site_url(self):
"""
#13749 - Admin should display link to front-end site 'View site'
"""
url = reverse('admin:index')
response = self.client.get(url)
self.assertEqual(response.context['site_url'], '/my-site-url/')
self.assertContains(response, '<a href="/my-site-url/">View site</a>')
def test_date_hierarchy_empty_queryset(self):
self.assertIs(Question.objects.exists(), False)
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertEqual(response.status_code, 200)
@override_settings(TIME_ZONE='America/Sao_Paulo', USE_TZ=True)
def test_date_hierarchy_timezone_dst(self):
# This datetime doesn't exist in this timezone due to DST.
for date in make_aware_datetimes(datetime.datetime(2016, 10, 16, 15), 'America/Sao_Paulo'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=16')
self.assertContains(response, 'question__expires__month=10')
self.assertContains(response, 'question__expires__year=2016')
@override_settings(TIME_ZONE='America/Los_Angeles', USE_TZ=True)
def test_date_hierarchy_local_date_differ_from_utc(self):
# This datetime is 2017-01-01 in UTC.
for date in make_aware_datetimes(datetime.datetime(2016, 12, 31, 16), 'America/Los_Angeles'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=31')
self.assertContains(response, 'question__expires__month=12')
self.assertContains(response, 'question__expires__year=2016')
def test_sortable_by_columns_subset(self):
expected_sortable_fields = ('date', 'callable_year')
expected_not_sortable_fields = (
'content', 'model_year', 'modeladmin_year', 'model_year_reversed',
'section',
)
response = self.client.get(reverse('admin6:admin_views_article_changelist'))
for field_name in expected_sortable_fields:
self.assertContains(response, '<th scope="col" class="sortable column-%s">' % field_name)
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
def test_get_sortable_by_columns_subset(self):
response = self.client.get(reverse('admin6:admin_views_actor_changelist'))
self.assertContains(response, '<th scope="col" class="sortable column-age">')
self.assertContains(response, '<th scope="col" class="column-name">')
def test_sortable_by_no_column(self):
expected_not_sortable_fields = ('title', 'book')
response = self.client.get(reverse('admin6:admin_views_chapter_changelist'))
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_get_sortable_by_no_column(self):
response = self.client.get(reverse('admin6:admin_views_color_changelist'))
self.assertContains(response, '<th scope="col" class="column-value">')
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_app_index_context(self):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(
response,
'<title>Admin_Views administration | Django site admin</title>',
)
self.assertEqual(response.context['title'], 'Admin_Views administration')
self.assertEqual(response.context['app_label'], 'admin_views')
def test_change_view_subtitle_per_object(self):
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_view_subtitle_per_object(self):
viewuser = User.objects.create_user(
username='viewuser', password='secret', is_staff=True,
)
viewuser.user_permissions.add(
get_perm(Article, get_permission_codename('view', Article._meta)),
)
self.client.force_login(viewuser)
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_formset_kwargs_can_be_overridden(self):
response = self.client.get(reverse('admin:admin_views_city_add'))
self.assertContains(response, 'overridden_name')
def test_render_views_no_subtitle(self):
tests = [
reverse('admin:index'),
reverse('admin:app_list', args=('admin_views',)),
reverse('admin:admin_views_article_delete', args=(self.a1.pk,)),
reverse('admin:admin_views_article_history', args=(self.a1.pk,)),
]
for url in tests:
with self.subTest(url=url):
with self.assertNoLogs('django.template', 'DEBUG'):
self.client.get(url)
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
# Put this app's and the shared tests templates dirs in DIRS to take precedence
# over the admin's templates dir.
'DIRS': [
os.path.join(os.path.dirname(__file__), 'templates'),
os.path.join(os.path.dirname(os.path.dirname(__file__)), 'templates'),
],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}])
class AdminCustomTemplateTests(AdminViewBasicTestCase):
def test_custom_model_admin_templates(self):
# Test custom change list template with custom extra context
response = self.client.get(reverse('admin:admin_views_customarticle_changelist'))
self.assertContains(response, "var hello = 'Hello!';")
self.assertTemplateUsed(response, 'custom_admin/change_list.html')
# Test custom add form template
response = self.client.get(reverse('admin:admin_views_customarticle_add'))
self.assertTemplateUsed(response, 'custom_admin/add_form.html')
# Add an article so we can test delete, change, and history views
post = self.client.post(reverse('admin:admin_views_customarticle_add'), {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39'
})
self.assertRedirects(post, reverse('admin:admin_views_customarticle_changelist'))
self.assertEqual(CustomArticle.objects.all().count(), 1)
article_pk = CustomArticle.objects.all()[0].pk
# Test custom delete, change, and object history templates
# Test custom change form template
response = self.client.get(reverse('admin:admin_views_customarticle_change', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/change_form.html')
response = self.client.get(reverse('admin:admin_views_customarticle_delete', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/delete_confirmation.html')
response = self.client.post(reverse('admin:admin_views_customarticle_changelist'), data={
'index': 0,
'action': ['delete_selected'],
'_selected_action': ['1'],
})
self.assertTemplateUsed(response, 'custom_admin/delete_selected_confirmation.html')
response = self.client.get(reverse('admin:admin_views_customarticle_history', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/object_history.html')
# A custom popup response template may be specified by
# ModelAdmin.popup_response_template.
response = self.client.post(reverse('admin:admin_views_customarticle_add') + '?%s=1' % IS_POPUP_VAR, {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39',
IS_POPUP_VAR: '1'
})
self.assertEqual(response.template_name, 'custom_admin/popup_response.html')
def test_extended_bodyclass_template_change_form(self):
"""
The admin/change_form.html template uses block.super in the
bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_change_password_template(self):
user = User.objects.get(username='super')
response = self.client.get(reverse('admin:auth_user_password_change', args=(user.id,)))
# The auth/user/change_password.html template uses super in the
# bodyclass block.
self.assertContains(response, 'bodyclass_consistency_check ')
# When a site has multiple passwords in the browser's password manager,
# a browser pop up asks which user the new password is for. To prevent
# this, the username is added to the change password form.
self.assertContains(response, '<input type="text" name="username" value="super" class="hidden">')
def test_extended_bodyclass_template_index(self):
"""
The admin/index.html template uses block.super in the bodyclass block.
"""
response = self.client.get(reverse('admin:index'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_change_list(self):
"""
The admin/change_list.html' template uses block.super
in the bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_login(self):
"""
The admin/login.html template uses block.super in the
bodyclass block.
"""
self.client.logout()
response = self.client.get(reverse('admin:login'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_confirmation(self):
"""
The admin/delete_confirmation.html template uses
block.super in the bodyclass block.
"""
group = Group.objects.create(name="foogroup")
response = self.client.get(reverse('admin:auth_group_delete', args=(group.id,)))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_selected_confirmation(self):
"""
The admin/delete_selected_confirmation.html template uses
block.super in bodyclass block.
"""
group = Group.objects.create(name="foogroup")
post_data = {
'action': 'delete_selected',
'selected_across': '0',
'index': '0',
'_selected_action': group.id
}
response = self.client.post(reverse('admin:auth_group_changelist'), post_data)
self.assertEqual(response.context['site_header'], 'Django administration')
self.assertContains(response, 'bodyclass_consistency_check ')
def test_filter_with_custom_template(self):
"""
A custom template can be used to render an admin filter.
"""
response = self.client.get(reverse('admin:admin_views_color2_changelist'))
self.assertTemplateUsed(response, 'custom_filter_template.html')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewFormUrlTest(TestCase):
current_app = "admin3"
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_change_form_URL_has_correct_value(self):
"""
change_view has form_url in response.context
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,), current_app=self.current_app)
)
self.assertIn('form_url', response.context, msg='form_url not present in response.context')
self.assertEqual(response.context['form_url'], 'pony')
def test_initial_data_can_be_overridden(self):
"""
The behavior for setting initial form data can be overridden in the
ModelAdmin class. Usually, the initial value is set via the GET params.
"""
response = self.client.get(
reverse('admin:admin_views_restaurant_add', current_app=self.current_app),
{'name': 'test_value'}
)
# this would be the usual behaviour
self.assertNotContains(response, 'value="test_value"')
# this is the overridden behaviour
self.assertContains(response, 'value="overridden_value"')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminJavaScriptTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_js_minified_only_if_debug_is_false(self):
"""
The minified versions of the JS files are only used when DEBUG is False.
"""
with override_settings(DEBUG=False):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertNotContains(response, 'vendor/jquery/jquery.js')
self.assertContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
with override_settings(DEBUG=True):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'vendor/jquery/jquery.js')
self.assertNotContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
@override_settings(ROOT_URLCONF='admin_views.urls')
class SaveAsTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_as_duplication(self):
"""'save as' creates a new person"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
new_person = Person.objects.latest('id')
self.assertRedirects(response, reverse('admin:admin_views_person_change', args=(new_person.pk,)))
def test_save_as_continue_false(self):
"""
Saving a new object using "Save as new" redirects to the changelist
instead of the change view when ModelAdmin.save_as_continue=False.
"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
url = reverse('admin:admin_views_person_change', args=(self.per1.pk,), current_app=site2.name)
response = self.client.post(url, post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
self.assertRedirects(response, reverse('admin:admin_views_person_changelist', current_app=site2.name))
def test_save_as_new_with_validation_errors(self):
"""
When you click "Save as new" and have a validation error,
you only see the "Save as new" button and not the other save buttons,
and that only the "Save as" button is visible.
"""
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), {
'_saveasnew': '',
'gender': 'invalid',
'_addanother': 'fail',
})
self.assertContains(response, 'Please correct the errors below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_validation_errors_with_inlines(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': 'Child',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': '_invalid',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_inlines_with_validation_errors(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': '_invalid',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': 'Father',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
@override_settings(ROOT_URLCONF='admin_views.urls')
class CustomModelAdminTest(AdminViewBasicTestCase):
def test_custom_admin_site_login_form(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
login = self.client.post(reverse('admin2:login'), {
REDIRECT_FIELD_NAME: reverse('admin2:index'),
'username': 'customform',
'password': 'secret',
}, follow=True)
self.assertIsInstance(login, TemplateResponse)
self.assertContains(login, 'custom form error')
self.assertContains(login, 'path/to/media.css')
def test_custom_admin_site_login_template(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/login.html')
self.assertContains(response, 'Hello from a custom login template')
def test_custom_admin_site_logout_template(self):
response = self.client.get(reverse('admin2:logout'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/logout.html')
self.assertContains(response, 'Hello from a custom logout template')
def test_custom_admin_site_index_view_and_template(self):
response = self.client.get(reverse('admin2:index'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/index.html')
self.assertContains(response, 'Hello from a custom index template *bar*')
def test_custom_admin_site_app_index_view_and_template(self):
response = self.client.get(reverse('admin2:app_list', args=('admin_views',)))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/app_index.html')
self.assertContains(response, 'Hello from a custom app_index template')
def test_custom_admin_site_password_change_template(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'Hello from a custom password change form template')
def test_custom_admin_site_password_change_with_extra_context(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'eggs')
def test_custom_admin_site_password_change_done_template(self):
response = self.client.get(reverse('admin2:password_change_done'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_done.html')
self.assertContains(response, 'Hello from a custom password change done template')
def test_custom_admin_site_view(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin2:my_view'))
self.assertEqual(response.content, b"Django is a magical pony!")
def test_pwd_change_custom_template(self):
self.client.force_login(self.superuser)
su = User.objects.get(username='super')
response = self.client.get(reverse('admin4:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 200)
def get_perm(Model, codename):
"""Return the permission object, for the Model"""
ct = ContentType.objects.get_for_model(Model, for_concrete_model=False)
return Permission.objects.get(content_type=ct, codename=codename)
@override_settings(
ROOT_URLCONF='admin_views.urls',
# Test with the admin's documented list of required context processors.
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewPermissionsTest(TestCase):
"""Tests for Admin Views Permissions."""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.nostaffuser = User.objects.create_user(username='nostaff', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1,
another_section=cls.s1,
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
# Setup permissions, for our users who can add, change, and delete.
opts = Article._meta
# User who can view Articles
cls.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('view', opts)))
# User who can add Articles
cls.adduser.user_permissions.add(get_perm(Article, get_permission_codename('add', opts)))
# User who can change Articles
cls.changeuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
cls.nostaffuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
# User who can delete Articles
cls.deleteuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', opts)))
cls.deleteuser.user_permissions.add(get_perm(Section, get_permission_codename('delete', Section._meta)))
# login POST dicts
cls.index_url = reverse('admin:index')
cls.super_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'super',
'password': 'secret',
}
cls.super_email_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'secret',
}
cls.super_email_bad_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'notsecret',
}
cls.adduser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'adduser',
'password': 'secret',
}
cls.changeuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'changeuser',
'password': 'secret',
}
cls.deleteuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'deleteuser',
'password': 'secret',
}
cls.nostaff_login = {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'nostaff',
'password': 'secret',
}
cls.joepublic_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'joepublic',
'password': 'secret',
}
cls.viewuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'viewuser',
'password': 'secret',
}
cls.no_username_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'password': 'secret',
}
def test_login(self):
"""
Make sure only staff members can log in.
Successful posts to the login page will redirect to the original url.
Unsuccessful attempts will continue to render the login page with
a 200 status code.
"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
# Super User
response = self.client.get(self.index_url)
self.assertRedirects(response, login_url)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Test if user enters email address
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# only correct passwords get a username hint
login = self.client.post(login_url, self.super_email_bad_login)
self.assertContains(login, ERROR_MESSAGE)
new_user = User(username='jondoe', password='secret', email='[email protected]')
new_user.save()
# check to ensure if there are multiple email addresses a user doesn't get a 500
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# View User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.viewuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Add User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.adduser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Change User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.changeuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Delete User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.deleteuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Regular User should not be able to login.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Requests without username should not return 500 errors.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.no_username_login)
self.assertEqual(login.status_code, 200)
self.assertFormError(login, 'form', 'username', ['This field is required.'])
def test_login_redirect_for_direct_get(self):
"""
Login redirect should be to the admin index page when going directly to
/admin/login/.
"""
response = self.client.get(reverse('admin:login'))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context[REDIRECT_FIELD_NAME], reverse('admin:index'))
def test_login_has_permission(self):
# Regular User should not be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.joepublic_login)
self.assertContains(login, 'permission denied')
# User with permissions should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.nostaff_login)
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
# Staff should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'deleteuser',
'password': 'secret',
})
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
def test_login_successfully_redirects_to_original_URL(self):
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
query_string = 'the-answer=42'
redirect_url = '%s?%s' % (self.index_url, query_string)
new_next = {REDIRECT_FIELD_NAME: redirect_url}
post_data = self.super_login.copy()
post_data.pop(REDIRECT_FIELD_NAME)
login = self.client.post(
'%s?%s' % (reverse('admin:login'), urlencode(new_next)),
post_data)
self.assertRedirects(login, redirect_url)
def test_double_login_is_not_allowed(self):
"""Regression test for #19327"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with non-admin user fails
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with admin user while already logged in
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
def test_login_page_notice_for_non_staff_users(self):
"""
A logged-in non-staff user trying to access the admin index should be
presented with the login page and a hint indicating that the current
user doesn't have access to it.
"""
hint_template = 'You are authenticated as {}'
# Anonymous user should not be shown the hint
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertNotContains(response, hint_template.format(''), status_code=200)
# Non-staff user should be shown the hint
self.client.force_login(self.nostaffuser)
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertContains(response, hint_template.format(self.nostaffuser.username), status_code=200)
def test_add_view(self):
"""Test add view restricts access and actually adds items."""
add_dict = {
'title': 'Døm ikke',
'content': '<p>great article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
# Change User should not have access to add articles
self.client.force_login(self.changeuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.get(reverse('admin:logout'))
# View User should not have access to add articles
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
# Now give the user permission to add but not change.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.context['title'], 'Add article')
self.assertContains(response, '<title>Add article | Django site admin</title>')
self.assertContains(response, '<input type="submit" value="Save and view" name="_continue">')
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict, follow=False)
self.assertEqual(post.status_code, 302)
self.assertEqual(Article.objects.count(), 4)
article = Article.objects.latest('pk')
response = self.client.get(reverse('admin:admin_views_article_change', args=(article.pk,)))
self.assertContains(response, '<li class="success">The article “Døm ikke” was added successfully.</li>')
article.delete()
self.client.get(reverse('admin:logout'))
# Add user may login and POST to add view, then redirect to admin root
self.client.force_login(self.adduser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
change_list_link = '› <a href="%s">Articles</a>' % reverse('admin:admin_views_article_changelist')
self.assertNotContains(
addpage, change_list_link,
msg_prefix='User restricted to add permission is given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 4)
self.assertEqual(len(mail.outbox), 2)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a created object')
self.client.get(reverse('admin:logout'))
# The addition was logged correctly
addition_log = LogEntry.objects.all()[0]
new_article = Article.objects.last()
article_ct = ContentType.objects.get_for_model(Article)
self.assertEqual(addition_log.user_id, self.adduser.pk)
self.assertEqual(addition_log.content_type_id, article_ct.pk)
self.assertEqual(addition_log.object_id, str(new_article.pk))
self.assertEqual(addition_log.object_repr, "Døm ikke")
self.assertEqual(addition_log.action_flag, ADDITION)
self.assertEqual(addition_log.get_change_message(), "Added.")
# Super can add too, but is redirected to the change list view
self.client.force_login(self.superuser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
self.assertContains(
addpage, change_list_link,
msg_prefix='Unrestricted user is not given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, reverse('admin:admin_views_article_changelist'))
self.assertEqual(Article.objects.count(), 5)
self.client.get(reverse('admin:logout'))
# 8509 - if a normal user is already logged in, it is possible
# to change user into the superuser without error
self.client.force_login(self.joepublicuser)
# Check and make sure that if user expires, data still persists
self.client.force_login(self.superuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
@mock.patch('django.contrib.admin.options.InlineModelAdmin.has_change_permission')
def test_add_view_with_view_only_inlines(self, has_change_permission):
"""User with add permission to a section but view-only for inlines."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('add', Section._meta)))
self.client.force_login(self.viewuser)
# Valid POST creates a new section.
data = {
'name': 'New obj',
'article_set-TOTAL_FORMS': 0,
'article_set-INITIAL_FORMS': 0,
}
response = self.client.post(reverse('admin:admin_views_section_add'), data)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(Section.objects.latest('id').name, data['name'])
# InlineModelAdmin.has_change_permission()'s obj argument is always
# None during object add.
self.assertEqual([obj for (request, obj), _ in has_change_permission.call_args_list], [None, None])
def test_change_view(self):
"""Change view should restrict access and allow users to edit items."""
change_dict = {
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
article_changelist_url = reverse('admin:admin_views_article_changelist')
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.status_code, 403)
response = self.client.get(article_change_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view articles but not make changes.
self.client.force_login(self.viewuser)
response = self.client.get(article_changelist_url)
self.assertContains(
response,
'<title>Select article to view | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to view</h1>')
self.assertEqual(response.context['title'], 'Select article to view')
response = self.client.get(article_change_url)
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<label>Extra form field:</label>')
self.assertContains(response, '<a href="/test_admin/admin/admin_views/article/" class="closelink">Close</a>')
self.assertEqual(response.context['title'], 'View article')
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>Middle content</p>')
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.context['title'], 'Select article to change')
self.assertContains(
response,
'<title>Select article to change | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to change</h1>')
response = self.client.get(article_change_url)
self.assertEqual(response.context['title'], 'Change article')
self.assertContains(
response,
'<title>Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
post = self.client.post(article_change_url, change_dict)
self.assertRedirects(post, article_changelist_url)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>edited article</p>')
# one error in form should produce singular error message, multiple errors plural
change_dict['title'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the error below.',
msg_prefix='Singular error message not found in response to post with one error'
)
change_dict['content'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the errors below.',
msg_prefix='Plural error message not found in response to post with multiple errors'
)
self.client.get(reverse('admin:logout'))
# Test redirection when using row-level change permissions. Refs #11513.
r1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
r2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
r3 = RowLevelChangePermissionModel.objects.create(id=3, name='odd id mult 3')
r6 = RowLevelChangePermissionModel.objects.create(id=6, name='even id mult 3')
change_url_1 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r1.pk,))
change_url_2 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r2.pk,))
change_url_3 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r3.pk,))
change_url_6 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r6.pk,))
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1)
self.assertEqual(response.status_code, 403)
response = self.client.post(change_url_1, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertEqual(response.status_code, 403)
response = self.client.get(change_url_2)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_2, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertRedirects(response, self.index_url)
response = self.client.get(change_url_3)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_3, {'name': 'changed'})
self.assertEqual(response.status_code, 403)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=3).name, 'odd id mult 3')
response = self.client.get(change_url_6)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_6, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=6).name, 'changed')
self.assertRedirects(response, self.index_url)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_1, {'name': 'changed'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertContains(response, 'login-form')
response = self.client.get(change_url_2, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_2, {'name': 'changed again'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_change_view_without_object_change_permission(self):
"""
The object should be read-only if the user has permission to view it
and change objects of that type but not to change the current object.
"""
change_url = reverse('admin9:admin_views_article_change', args=(self.a1.pk,))
self.client.force_login(self.viewuser)
response = self.client.get(change_url)
self.assertEqual(response.context['title'], 'View article')
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<a href="/test_admin/admin9/admin_views/article/" class="closelink">Close</a>')
def test_change_view_save_as_new(self):
"""
'Save as new' should raise PermissionDenied for users without the 'add'
permission.
"""
change_dict_save_as_new = {
'_saveasnew': 'Save as new',
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
# Add user can perform "Save as new".
article_count = Article.objects.count()
self.client.force_login(self.adduser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), article_count + 1)
self.client.logout()
# Change user cannot perform "Save as new" (no 'add' permission).
article_count = Article.objects.count()
self.client.force_login(self.changeuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), article_count)
# User with both add and change permissions should be redirected to the
# change page for the newly created object.
article_count = Article.objects.count()
self.client.force_login(self.superuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(Article.objects.count(), article_count + 1)
new_article = Article.objects.latest('id')
self.assertRedirects(post, reverse('admin:admin_views_article_change', args=(new_article.pk,)))
def test_change_view_with_view_only_inlines(self):
"""
User with change permission to a section but view-only for inlines.
"""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
# Valid POST changes the name.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 3,
'article_set-INITIAL_FORMS': 3
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
def test_change_view_with_view_and_add_inlines(self):
"""User has view and add permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
# Valid POST creates a new article.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-3-id': [''],
'article_set-3-title': ['A title'],
'article_set-3-content': ['Added content'],
'article_set-3-date_0': ['2008-3-18'],
'article_set-3-date_1': ['11:54:58'],
'article_set-3-section': [str(self.s1.pk)],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
self.assertEqual(Article.objects.count(), 4)
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
def test_change_view_with_view_and_delete_inlines(self):
"""User has view and delete permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
# Inline POST details are ignored without delete permission.
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 3)
# Deletion successful when delete permission is added.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', Article._meta)))
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 2)
def test_delete_view(self):
"""Delete view should restrict access and actually delete items."""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_article_delete', args=(self.a1.pk,))
# add user should not be able to delete articles
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# view user should not be able to delete articles
self.client.force_login(self.viewuser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# Delete user can delete
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 3</li>")
# test response contains link to related Article
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
response = self.client.get(delete_url)
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 1</li>")
post = self.client.post(delete_url, delete_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 2)
self.assertEqual(len(mail.outbox), 1)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a deleted object')
article_ct = ContentType.objects.get_for_model(Article)
logged = LogEntry.objects.get(content_type=article_ct, action_flag=DELETION)
self.assertEqual(logged.object_id, str(self.a1.pk))
def test_delete_view_with_no_default_permissions(self):
"""
The delete view allows users to delete collected objects without a
'delete' permission (ReadOnlyPizza.Meta.default_permissions is empty).
"""
pizza = ReadOnlyPizza.objects.create(name='Double Cheese')
delete_url = reverse('admin:admin_views_readonlypizza_delete', args=(pizza.pk,))
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertContains(response, 'admin_views/readonlypizza/%s/' % pizza.pk)
self.assertContains(response, '<h2>Summary</h2>')
self.assertContains(response, '<li>Read only pizzas: 1</li>')
post = self.client.post(delete_url, {'post': 'yes'})
self.assertRedirects(post, reverse('admin:admin_views_readonlypizza_changelist'))
self.assertEqual(ReadOnlyPizza.objects.count(), 0)
def test_delete_view_nonexistent_obj(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_article_delete', args=('nonexistent',))
response = self.client.get(url, follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “nonexistent” doesn’t exist. Perhaps it was deleted?']
)
def test_history_view(self):
"""History view should restrict access."""
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view all items
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
# Test redirection when using row-level change permissions. Refs #11513.
rl1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
rl2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 403)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_history_view_bad_url(self):
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=('foo',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “foo” doesn’t exist. Perhaps it was deleted?']
)
def test_conditionally_show_add_section_link(self):
"""
The foreign key widget should only show the "add related" button if the
user has permission to add that related item.
"""
self.client.force_login(self.adduser)
# The user can't add sections yet, so they shouldn't see the "add section" link.
url = reverse('admin:admin_views_article_add')
add_link_text = 'add_id_section'
response = self.client.get(url)
self.assertNotContains(response, add_link_text)
# Allow the user to add sections too. Now they can see the "add section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('add', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertContains(response, add_link_text)
def test_conditionally_show_change_section_link(self):
"""
The foreign key widget should only show the "change related" button if
the user has permission to change that related item.
"""
def get_change_related(response):
return response.context['adminform'].form.fields['section'].widget.can_change_related
self.client.force_login(self.adduser)
# The user can't change sections yet, so they shouldn't see the "change section" link.
url = reverse('admin:admin_views_article_add')
change_link_text = 'change_id_section'
response = self.client.get(url)
self.assertFalse(get_change_related(response))
self.assertNotContains(response, change_link_text)
# Allow the user to change sections too. Now they can see the "change section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('change', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_change_related(response))
self.assertContains(response, change_link_text)
def test_conditionally_show_delete_section_link(self):
"""
The foreign key widget should only show the "delete related" button if
the user has permission to delete that related item.
"""
def get_delete_related(response):
return response.context['adminform'].form.fields['sub_section'].widget.can_delete_related
self.client.force_login(self.adduser)
# The user can't delete sections yet, so they shouldn't see the "delete section" link.
url = reverse('admin:admin_views_article_add')
delete_link_text = 'delete_id_sub_section'
response = self.client.get(url)
self.assertFalse(get_delete_related(response))
self.assertNotContains(response, delete_link_text)
# Allow the user to delete sections too. Now they can see the "delete section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('delete', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_delete_related(response))
self.assertContains(response, delete_link_text)
def test_disabled_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_active = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_disabled_staff_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_staff = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_app_list_permissions(self):
"""
If a user has no module perms, the app list returns a 404.
"""
opts = Article._meta
change_user = User.objects.get(username='changeuser')
permission = get_perm(Article, get_permission_codename('change', opts))
self.client.force_login(self.changeuser)
# the user has no module permissions
change_user.user_permissions.remove(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 404)
# the user now has module permissions
change_user.user_permissions.add(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 200)
def test_shortcut_view_only_available_to_staff(self):
"""
Only admin users should be able to use the admin shortcut view.
"""
model_ctype = ContentType.objects.get_for_model(ModelWithStringPrimaryKey)
obj = ModelWithStringPrimaryKey.objects.create(string_pk='foo')
shortcut_url = reverse('admin:view_on_site', args=(model_ctype.pk, obj.pk))
# Not logged in: we should see the login page.
response = self.client.get(shortcut_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
# Logged in? Redirect.
self.client.force_login(self.superuser)
response = self.client.get(shortcut_url, follow=False)
# Can't use self.assertRedirects() because User.get_absolute_url() is silly.
self.assertEqual(response.status_code, 302)
# Domain may depend on contrib.sites tests also run
self.assertRegex(response.url, 'http://(testserver|example.com)/dummy/foo/')
def test_has_module_permission(self):
"""
has_module_permission() returns True for all users who
have any permission for that module (add, change, or delete), so that
the module is displayed on the admin index page.
"""
self.client.force_login(self.superuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
def test_overriding_has_module_permission(self):
"""
If has_module_permission() always returns False, the module shouldn't
be displayed on the admin index page for any users.
"""
articles = Article._meta.verbose_name_plural.title()
sections = Section._meta.verbose_name_plural.title()
index_url = reverse('admin7:index')
self.client.force_login(self.superuser)
response = self.client.get(index_url)
self.assertContains(response, sections)
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(index_url)
self.assertNotContains(response, articles)
# The app list displays Sections but not Articles as the latter has
# ModelAdmin.has_module_permission() = False.
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin7:app_list', args=('admin_views',)))
self.assertContains(response, sections)
self.assertNotContains(response, articles)
def test_post_save_message_no_forbidden_links_visible(self):
"""
Post-save message shouldn't contain a link to the change form if the
user doesn't have the change permission.
"""
self.client.force_login(self.adduser)
# Emulate Article creation for user with add-only permission.
post_data = {
"title": "Fun & games",
"content": "Some content",
"date_0": "2015-10-31",
"date_1": "16:35:00",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data, follow=True)
self.assertContains(
response,
'<li class="success">The article “Fun & games” was added successfully.</li>',
html=True
)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewProxyModelPermissionsTests(TestCase):
"""Tests for proxy models permissions in the admin."""
@classmethod
def setUpTestData(cls):
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
# Setup permissions.
opts = UserProxy._meta
cls.viewuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('view', opts)))
cls.adduser.user_permissions.add(get_perm(UserProxy, get_permission_codename('add', opts)))
cls.changeuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('change', opts)))
cls.deleteuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('delete', opts)))
# UserProxy instances.
cls.user_proxy = UserProxy.objects.create(username='user_proxy', password='secret')
def test_add(self):
self.client.force_login(self.adduser)
url = reverse('admin:admin_views_userproxy_add')
data = {
'username': 'can_add',
'password': 'secret',
'date_joined_0': '2019-01-15',
'date_joined_1': '16:59:10',
}
response = self.client.post(url, data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertTrue(UserProxy.objects.filter(username='can_add').exists())
def test_view(self):
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_userproxy_changelist'))
self.assertContains(response, '<h1>Select user proxy to view</h1>')
response = self.client.get(reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,)))
self.assertContains(response, '<h1>View user proxy</h1>')
self.assertContains(response, '<div class="readonly">user_proxy</div>')
def test_change(self):
self.client.force_login(self.changeuser)
data = {
'password': self.user_proxy.password,
'username': self.user_proxy.username,
'date_joined_0': self.user_proxy.date_joined.strftime('%Y-%m-%d'),
'date_joined_1': self.user_proxy.date_joined.strftime('%H:%M:%S'),
'first_name': 'first_name',
}
url = reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,))
response = self.client.post(url, data)
self.assertRedirects(response, reverse('admin:admin_views_userproxy_changelist'))
self.assertEqual(UserProxy.objects.get(pk=self.user_proxy.pk).first_name, 'first_name')
def test_delete(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_userproxy_delete', args=(self.user_proxy.pk,))
response = self.client.post(url, {'post': 'yes'}, follow=True)
self.assertEqual(response.status_code, 200)
self.assertFalse(UserProxy.objects.filter(pk=self.user_proxy.pk).exists())
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewsNoUrlTest(TestCase):
"""Regression test for #17333"""
@classmethod
def setUpTestData(cls):
# User who can change Reports
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.changeuser.user_permissions.add(get_perm(Report, get_permission_codename('change', Report._meta)))
def test_no_standard_modeladmin_urls(self):
"""Admin index views don't break when user's ModelAdmin removes standard urls"""
self.client.force_login(self.changeuser)
r = self.client.get(reverse('admin:index'))
# we shouldn't get a 500 error caused by a NoReverseMatch
self.assertEqual(r.status_code, 200)
self.client.get(reverse('admin:logout'))
@skipUnlessDBFeature('can_defer_constraint_checks')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewDeletedObjectsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.v1 = Villain.objects.create(name='Adam')
cls.v2 = Villain.objects.create(name='Sue')
cls.sv1 = SuperVillain.objects.create(name='Bob')
cls.pl1 = Plot.objects.create(name='World Domination', team_leader=cls.v1, contact=cls.v2)
cls.pl2 = Plot.objects.create(name='World Peace', team_leader=cls.v2, contact=cls.v2)
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
cls.pd1 = PlotDetails.objects.create(details='almost finished', plot=cls.pl1)
cls.sh1 = SecretHideout.objects.create(location='underground bunker', villain=cls.v1)
cls.sh2 = SecretHideout.objects.create(location='floating castle', villain=cls.sv1)
cls.ssh1 = SuperSecretHideout.objects.create(location='super floating castle!', supervillain=cls.sv1)
cls.cy1 = CyclicOne.objects.create(name='I am recursive', two_id=1)
cls.cy2 = CyclicTwo.objects.create(name='I am recursive too', one_id=1)
def setUp(self):
self.client.force_login(self.superuser)
def test_nesting(self):
"""
Objects should be nested to display the relationships that
cause them to be scheduled for deletion.
"""
pattern = re.compile(
r'<li>Plot: <a href="%s">World Domination</a>\s*<ul>\s*'
r'<li>Plot details: <a href="%s">almost finished</a>' % (
reverse('admin:admin_views_plot_change', args=(self.pl1.pk,)),
reverse('admin:admin_views_plotdetails_change', args=(self.pd1.pk,)),
)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertRegex(response.content.decode(), pattern)
def test_cyclic(self):
"""
Cyclic relationships should still cause each object to only be
listed once.
"""
one = '<li>Cyclic one: <a href="%s">I am recursive</a>' % (
reverse('admin:admin_views_cyclicone_change', args=(self.cy1.pk,)),
)
two = '<li>Cyclic two: <a href="%s">I am recursive too</a>' % (
reverse('admin:admin_views_cyclictwo_change', args=(self.cy2.pk,)),
)
response = self.client.get(reverse('admin:admin_views_cyclicone_delete', args=(self.cy1.pk,)))
self.assertContains(response, one, 1)
self.assertContains(response, two, 1)
def test_perms_needed(self):
self.client.logout()
delete_user = User.objects.get(username='deleteuser')
delete_user.user_permissions.add(get_perm(Plot, get_permission_codename('delete', Plot._meta)))
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(self.pl1.pk,)))
self.assertContains(response, "your account doesn't have permission to delete the following types of objects")
self.assertContains(response, "<li>plot details</li>")
def test_protected(self):
q = Question.objects.create(question="Why?")
a1 = Answer.objects.create(question=q, answer="Because.")
a2 = Answer.objects.create(question=q, answer="Yes.")
response = self.client.get(reverse('admin:admin_views_question_delete', args=(q.pk,)))
self.assertContains(response, "would require deleting the following protected related objects")
self.assertContains(
response,
'<li>Answer: <a href="%s">Because.</a></li>' % reverse('admin:admin_views_answer_change', args=(a1.pk,))
)
self.assertContains(
response,
'<li>Answer: <a href="%s">Yes.</a></li>' % reverse('admin:admin_views_answer_change', args=(a2.pk,))
)
def test_post_delete_protected(self):
"""
A POST request to delete protected objects should display the page
which says the deletion is prohibited.
"""
q = Question.objects.create(question='Why?')
Answer.objects.create(question=q, answer='Because.')
response = self.client.post(reverse('admin:admin_views_question_delete', args=(q.pk,)), {'post': 'yes'})
self.assertEqual(Question.objects.count(), 1)
self.assertContains(response, "would require deleting the following protected related objects")
def test_restricted(self):
album = Album.objects.create(title='Amaryllis')
song = Song.objects.create(album=album, name='Unity')
response = self.client.get(reverse('admin:admin_views_album_delete', args=(album.pk,)))
self.assertContains(
response,
'would require deleting the following protected related objects',
)
self.assertContains(
response,
'<li>Song: <a href="%s">Unity</a></li>'
% reverse('admin:admin_views_song_change', args=(song.pk,))
)
def test_post_delete_restricted(self):
album = Album.objects.create(title='Amaryllis')
Song.objects.create(album=album, name='Unity')
response = self.client.post(
reverse('admin:admin_views_album_delete', args=(album.pk,)),
{'post': 'yes'},
)
self.assertEqual(Album.objects.count(), 1)
self.assertContains(
response,
'would require deleting the following protected related objects',
)
def test_not_registered(self):
should_contain = """<li>Secret hideout: underground bunker"""
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain, 1)
def test_multiple_fkeys_to_same_model(self):
"""
If a deleted object has two relationships from another model,
both of those should be followed in looking for related
objects to delete.
"""
should_contain = '<li>Plot: <a href="%s">World Domination</a>' % reverse(
'admin:admin_views_plot_change', args=(self.pl1.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain)
def test_multiple_fkeys_to_same_instance(self):
"""
If a deleted object has two relationships pointing to it from
another object, the other object should still only be listed
once.
"""
should_contain = '<li>Plot: <a href="%s">World Peace</a></li>' % reverse(
'admin:admin_views_plot_change', args=(self.pl2.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain, 1)
def test_inheritance(self):
"""
In the case of an inherited model, if either the child or
parent-model instance is deleted, both instances are listed
for deletion, as well as any relationships they have.
"""
should_contain = [
'<li>Villain: <a href="%s">Bob</a>' % reverse('admin:admin_views_villain_change', args=(self.sv1.pk,)),
'<li>Super villain: <a href="%s">Bob</a>' % reverse(
'admin:admin_views_supervillain_change', args=(self.sv1.pk,)
),
'<li>Secret hideout: floating castle',
'<li>Super secret hideout: super floating castle!',
]
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
response = self.client.get(reverse('admin:admin_views_supervillain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
def test_generic_relations(self):
"""
If a deleted object has GenericForeignKeys pointing to it,
those objects should be listed for deletion.
"""
plot = self.pl3
tag = FunkyTag.objects.create(content_object=plot, name='hott')
should_contain = '<li>Funky tag: <a href="%s">hott' % reverse(
'admin:admin_views_funkytag_change', args=(tag.id,))
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(plot.pk,)))
self.assertContains(response, should_contain)
def test_generic_relations_with_related_query_name(self):
"""
If a deleted object has GenericForeignKey with
GenericRelation(related_query_name='...') pointing to it, those objects
should be listed for deletion.
"""
bookmark = Bookmark.objects.create(name='djangoproject')
tag = FunkyTag.objects.create(content_object=bookmark, name='django')
tag_url = reverse('admin:admin_views_funkytag_change', args=(tag.id,))
should_contain = '<li>Funky tag: <a href="%s">django' % tag_url
response = self.client.get(reverse('admin:admin_views_bookmark_delete', args=(bookmark.pk,)))
self.assertContains(response, should_contain)
def test_delete_view_uses_get_deleted_objects(self):
"""The delete view uses ModelAdmin.get_deleted_objects()."""
book = Book.objects.create(name='Test Book')
response = self.client.get(reverse('admin2:admin_views_book_delete', args=(book.pk,)))
# BookAdmin.get_deleted_objects() returns custom text.
self.assertContains(response, 'a deletable object')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestGenericRelations(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.v1 = Villain.objects.create(name='Adam')
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
def setUp(self):
self.client.force_login(self.superuser)
def test_generic_content_object_in_list_display(self):
FunkyTag.objects.create(content_object=self.pl3, name='hott')
response = self.client.get(reverse('admin:admin_views_funkytag_changelist'))
self.assertContains(response, "%s</td>" % self.pl3)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewStringPrimaryKeyTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.pk = (
"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890 "
r"""-_.!~*'() ;/?:@&=+$, <>#%" {}|\^[]`"""
)
cls.m1 = ModelWithStringPrimaryKey.objects.create(string_pk=cls.pk)
content_type_pk = ContentType.objects.get_for_model(ModelWithStringPrimaryKey).pk
user_pk = cls.superuser.pk
LogEntry.objects.log_action(user_pk, content_type_pk, cls.pk, cls.pk, 2, change_message='Changed something')
def setUp(self):
self.client.force_login(self.superuser)
def test_get_history_view(self):
"""
Retrieving the history for an object using urlencoded form of primary
key should work.
Refs #12349, #18550.
"""
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_history', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
self.assertContains(response, 'Changed something')
def test_get_change_view(self):
"Retrieving the object using urlencoded form of primary key should work"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_change', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
def test_changelist_to_changeform_link(self):
"Link to the changeform of the object in changelist should use reverse() and be quoted -- #18072"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_changelist'))
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
pk_final_url = escape(iri_to_uri(quote(self.pk)))
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', pk_final_url)
should_contain = '<th class="field-__str__"><a href="%s">%s</a></th>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_recentactions_link(self):
"The link from the recent actions list referring to the changeform of the object should be quoted"
response = self.client.get(reverse('admin:index'))
link = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(self.pk),))
should_contain = """<a href="%s">%s</a>""" % (escape(link), escape(self.pk))
self.assertContains(response, should_contain)
def test_deleteconfirmation_link(self):
"The link from the delete confirmation page referring back to the changeform of the object should be quoted"
url = reverse('admin:admin_views_modelwithstringprimarykey_delete', args=(quote(self.pk),))
response = self.client.get(url)
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', escape(iri_to_uri(quote(self.pk))))
should_contain = '<a href="%s">%s</a>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_url_conflicts_with_add(self):
"A model with a primary key that ends with add or is `add` should be visible"
add_model = ModelWithStringPrimaryKey.objects.create(pk="i have something to add")
add_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
add_model2 = ModelWithStringPrimaryKey.objects.create(pk="add")
add_url = reverse('admin:admin_views_modelwithstringprimarykey_add')
change_url = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model2.pk),))
self.assertNotEqual(add_url, change_url)
def test_url_conflicts_with_delete(self):
"A model with a primary key that ends with delete should be visible"
delete_model = ModelWithStringPrimaryKey(pk="delete")
delete_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(delete_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_url_conflicts_with_history(self):
"A model with a primary key that ends with history should be visible"
history_model = ModelWithStringPrimaryKey(pk="history")
history_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(history_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_shortcut_view_with_escaping(self):
"'View on site should' work properly with char fields"
model = ModelWithStringPrimaryKey(pk='abc_123')
model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(model.pk),))
)
should_contain = '/%s/" class="viewsitelink">' % model.pk
self.assertContains(response, should_contain)
def test_change_view_history_link(self):
"""Object history button link should work and contain the pk value quoted."""
url = reverse(
'admin:%s_modelwithstringprimarykey_change' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
expected_link = reverse(
'admin:%s_modelwithstringprimarykey_history' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
self.assertContains(response, '<a href="%s" class="historylink"' % escape(expected_link))
def test_redirect_on_add_view_continue_button(self):
"""As soon as an object is added using "Save and continue editing"
button, the user should be redirected to the object's change_view.
In case primary key is a string containing some special characters
like slash or underscore, these characters must be escaped (see #22266)
"""
response = self.client.post(
reverse('admin:admin_views_modelwithstringprimarykey_add'),
{
'string_pk': '123/history',
"_continue": "1", # Save and continue editing
}
)
self.assertEqual(response.status_code, 302) # temporary redirect
self.assertIn('/123_2Fhistory/', response.headers['location']) # PK is quoted
@override_settings(ROOT_URLCONF='admin_views.urls')
class SecureViewTests(TestCase):
"""
Test behavior of a view protected by the staff_member_required decorator.
"""
def test_secure_view_shows_login_if_not_logged_in(self):
secure_url = reverse('secure_view')
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), secure_url))
response = self.client.get(secure_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.context[REDIRECT_FIELD_NAME], secure_url)
def test_staff_member_required_decorator_works_with_argument(self):
"""
Staff_member_required decorator works with an argument
(redirect_field_name).
"""
secure_url = '/test_admin/admin/secure-view2/'
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?myfield=%s' % (reverse('admin:login'), secure_url))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewUnicodeTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.b1 = Book.objects.create(name='Lærdommer')
cls.p1 = Promo.objects.create(name='<Promo for Lærdommer>', book=cls.b1)
cls.chap1 = Chapter.objects.create(
title='Norske bostaver æøå skaper problemer', content='<p>Svært frustrerende med UnicodeDecodeErro</p>',
book=cls.b1
)
cls.chap2 = Chapter.objects.create(
title='Kjærlighet', content='<p>La kjærligheten til de lidende seire.</p>', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Kjærlighet', content='<p>Noe innhold</p>', book=cls.b1)
cls.chap4 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='<Xtra(1) Norske bostaver æøå skaper problemer>')
cls.chap5 = ChapterXtra1.objects.create(chap=cls.chap2, xtra='<Xtra(1) Kjærlighet>')
cls.chap6 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='<Xtra(1) Kjærlighet>')
cls.chap7 = ChapterXtra2.objects.create(chap=cls.chap1, xtra='<Xtra(2) Norske bostaver æøå skaper problemer>')
cls.chap8 = ChapterXtra2.objects.create(chap=cls.chap2, xtra='<Xtra(2) Kjærlighet>')
cls.chap9 = ChapterXtra2.objects.create(chap=cls.chap3, xtra='<Xtra(2) Kjærlighet>')
def setUp(self):
self.client.force_login(self.superuser)
def test_unicode_edit(self):
"""
A test to ensure that POST on edit_view handles non-ASCII characters.
"""
post_data = {
"name": "Test lærdommer",
# inline data
"chapter_set-TOTAL_FORMS": "6",
"chapter_set-INITIAL_FORMS": "3",
"chapter_set-MAX_NUM_FORMS": "0",
"chapter_set-0-id": self.chap1.pk,
"chapter_set-0-title": "Norske bostaver æøå skaper problemer",
"chapter_set-0-content": "<p>Svært frustrerende med UnicodeDecodeError</p>",
"chapter_set-1-id": self.chap2.id,
"chapter_set-1-title": "Kjærlighet.",
"chapter_set-1-content": "<p>La kjærligheten til de lidende seire.</p>",
"chapter_set-2-id": self.chap3.id,
"chapter_set-2-title": "Need a title.",
"chapter_set-2-content": "<p>Newest content</p>",
"chapter_set-3-id": "",
"chapter_set-3-title": "",
"chapter_set-3-content": "",
"chapter_set-4-id": "",
"chapter_set-4-title": "",
"chapter_set-4-content": "",
"chapter_set-5-id": "",
"chapter_set-5-title": "",
"chapter_set-5-content": "",
}
response = self.client.post(reverse('admin:admin_views_book_change', args=(self.b1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_unicode_delete(self):
"""
The delete_view handles non-ASCII characters
"""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_book_delete', args=(self.b1.pk,))
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 200)
response = self.client.post(delete_url, delete_dict)
self.assertRedirects(response, reverse('admin:admin_views_book_changelist'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewListEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_inheritance(self):
Podcast.objects.create(name="This Week in Django", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_inheritance_2(self):
Vodcast.objects.create(name="This Week in Django", released=True)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_custom_pk(self):
Language.objects.create(iso='en', name='English', english_name='English')
response = self.client.get(reverse('admin:admin_views_language_changelist'))
self.assertEqual(response.status_code, 200)
def test_changelist_input_html(self):
response = self.client.get(reverse('admin:admin_views_person_changelist'))
# 2 inputs per object(the field and the hidden id field) = 6
# 4 management hidden fields = 4
# 4 action inputs (3 regular checkboxes, 1 checkbox to select all)
# main form submit button = 1
# search field and search submit button = 2
# CSRF field = 1
# field to track 'select all' across paginated views = 1
# 6 + 4 + 4 + 1 + 2 + 1 + 1 = 19 inputs
self.assertContains(response, "<input", count=20)
# 1 select per object = 3 selects
self.assertContains(response, "<select", count=4)
def test_post_messages(self):
# Ticket 12707: Saving inline editable should not show admin
# action warnings
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'),
data, follow=True)
self.assertEqual(len(response.context['messages']), 1)
def test_post_submission(self):
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
# test a filtered page
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "2",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"form-0-alive": "checked",
"form-1-id": str(self.per3.pk),
"form-1-gender": "1",
"form-1-alive": "checked",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?gender__exact=1', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
# test a searched page
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?q=john', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
def test_non_field_errors(self):
"""
Non-field errors are displayed for each of the forms in the
changelist's formset.
"""
fd1 = FoodDelivery.objects.create(reference='123', driver='bill', restaurant='thai')
fd2 = FoodDelivery.objects.create(reference='456', driver='bill', restaurant='india')
fd3 = FoodDelivery.objects.create(reference='789', driver='bill', restaurant='pizza')
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "pizza",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
1,
html=True
)
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
# Same data also.
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "thai",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
2,
html=True
)
def test_non_form_errors(self):
# test if non-form errors are handled; ticket #12716
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertContains(response, "Grace is not a Zombie")
def test_non_form_errors_is_errorlist(self):
# test if non-form errors are correctly handled; ticket #12878
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
non_form_errors = response.context['cl'].formset.non_form_errors()
self.assertIsInstance(non_form_errors, ErrorList)
self.assertEqual(
str(non_form_errors),
str(ErrorList(['Grace is not a Zombie'], error_class='nonform')),
)
def test_list_editable_ordering(self):
collector = Collector.objects.create(id=1, name="Frederick Clegg")
Category.objects.create(id=1, order=1, collector=collector)
Category.objects.create(id=2, order=2, collector=collector)
Category.objects.create(id=3, order=0, collector=collector)
Category.objects.create(id=4, order=0, collector=collector)
# NB: The order values must be changed so that the items are reordered.
data = {
"form-TOTAL_FORMS": "4",
"form-INITIAL_FORMS": "4",
"form-MAX_NUM_FORMS": "0",
"form-0-order": "14",
"form-0-id": "1",
"form-0-collector": "1",
"form-1-order": "13",
"form-1-id": "2",
"form-1-collector": "1",
"form-2-order": "1",
"form-2-id": "3",
"form-2-collector": "1",
"form-3-order": "0",
"form-3-id": "4",
"form-3-collector": "1",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_category_changelist'), data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
def test_list_editable_pagination(self):
"""
Pagination works for list_editable items.
"""
UnorderedObject.objects.create(id=1, name='Unordered object #1')
UnorderedObject.objects.create(id=2, name='Unordered object #2')
UnorderedObject.objects.create(id=3, name='Unordered object #3')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist'))
self.assertContains(response, 'Unordered object #3')
self.assertContains(response, 'Unordered object #2')
self.assertNotContains(response, 'Unordered object #1')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist') + '?p=2')
self.assertNotContains(response, 'Unordered object #3')
self.assertNotContains(response, 'Unordered object #2')
self.assertContains(response, 'Unordered object #1')
def test_list_editable_action_submit(self):
# List editable changes should not be executed if the action "Go" button is
# used to submit the form.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": "1",
"form-1-gender": "2",
"form-1-id": "2",
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": "3",
"index": "0",
"_selected_action": ['3'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 1)
def test_list_editable_action_choices(self):
# List editable changes should be executed if the "Save" button is
# used to submit the form - any action choices should be ignored.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
"_selected_action": ['1'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
def test_list_editable_popup(self):
"""
Fields should not be list-editable in popups.
"""
response = self.client.get(reverse('admin:admin_views_person_changelist'))
self.assertNotEqual(response.context['cl'].list_editable, ())
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?%s' % IS_POPUP_VAR)
self.assertEqual(response.context['cl'].list_editable, ())
def test_pk_hidden_fields(self):
"""
hidden pk fields aren't displayed in the table body and their
corresponding human-readable value is displayed instead. The hidden pk
fields are displayed but separately (not in the table) and only once.
"""
story1 = Story.objects.create(title='The adventures of Guido', content='Once upon a time in Djangoland...')
story2 = Story.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
response = self.client.get(reverse('admin:admin_views_story_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<td class="field-id">%d</td>' % story1.id, 1)
self.assertContains(response, '<td class="field-id">%d</td>' % story2.id, 1)
def test_pk_hidden_fields_with_list_display_links(self):
""" Similarly as test_pk_hidden_fields, but when the hidden pk fields are
referenced in list_display_links.
Refs #12475.
"""
story1 = OtherStory.objects.create(
title='The adventures of Guido',
content='Once upon a time in Djangoland...',
)
story2 = OtherStory.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
link1 = reverse('admin:admin_views_otherstory_change', args=(story1.pk,))
link2 = reverse('admin:admin_views_otherstory_change', args=(story2.pk,))
response = self.client.get(reverse('admin:admin_views_otherstory_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link1, story1.id), 1)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link2, story2.id), 1)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSearchTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='John Doe', gender=1)
Person.objects.create(name='John O"Hara', gender=1)
Person.objects.create(name="John O'Hara", gender=1)
cls.t1 = Recommender.objects.create()
cls.t2 = Recommendation.objects.create(the_recommender=cls.t1)
cls.t3 = Recommender.objects.create()
cls.t4 = Recommendation.objects.create(the_recommender=cls.t3)
cls.tt1 = TitleTranslation.objects.create(title=cls.t1, text='Bar')
cls.tt2 = TitleTranslation.objects.create(title=cls.t2, text='Foo')
cls.tt3 = TitleTranslation.objects.create(title=cls.t3, text='Few')
cls.tt4 = TitleTranslation.objects.create(title=cls.t4, text='Bas')
def setUp(self):
self.client.force_login(self.superuser)
def test_search_on_sibling_models(self):
"A search that mentions sibling models"
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned 1 object
self.assertContains(response, "\n1 recommendation\n")
def test_with_fk_to_field(self):
"""
The to_field GET parameter is preserved when a search is performed.
Refs #10918.
"""
response = self.client.get(reverse('admin:auth_user_changelist') + '?q=joe&%s=id' % TO_FIELD_VAR)
self.assertContains(response, "\n1 user\n")
self.assertContains(response, '<input type="hidden" name="%s" value="id">' % TO_FIELD_VAR, html=True)
def test_exact_matches(self):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned one object
self.assertContains(response, "\n1 recommendation\n")
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=ba')
# confirm the search returned zero objects
self.assertContains(response, "\n0 recommendations\n")
def test_beginning_matches(self):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
# confirm the search returned one object
self.assertContains(response, "\n1 person\n")
self.assertContains(response, "Guido")
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=uido')
# confirm the search returned zero objects
self.assertContains(response, "\n0 persons\n")
self.assertNotContains(response, "Guido")
def test_pluggable_search(self):
PluggableSearchPerson.objects.create(name="Bob", age=10)
PluggableSearchPerson.objects.create(name="Amy", age=20)
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=Bob')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Bob")
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=20')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Amy")
def test_reset_link(self):
"""
Test presence of reset link in search bar ("1 result (_x total_)").
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
# + 1 for total count
with self.assertNumQueries(5):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">6 total</a>)</span>""",
html=True
)
def test_no_total_count(self):
"""
#8408 -- "Show all" should be displayed instead of the total count if
ModelAdmin.show_full_result_count is False.
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
with self.assertNumQueries(4):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">Show all</a>)</span>""",
html=True
)
self.assertTrue(response.context['cl'].show_admin_actions)
def test_search_with_spaces(self):
url = reverse('admin:admin_views_person_changelist') + '?q=%s'
tests = [
('"John Doe"', 1),
("'John Doe'", 1),
('John Doe', 0),
('"John Doe" John', 1),
("'John Doe' John", 1),
("John Doe John", 0),
('"John Do"', 1),
("'John Do'", 1),
("'John O\'Hara'", 0),
("'John O\\'Hara'", 1),
('"John O\"Hara"', 0),
('"John O\\"Hara"', 1),
]
for search, hits in tests:
with self.subTest(search=search):
response = self.client.get(url % search)
self.assertContains(response, '\n%s person' % hits)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInheritedInlinesTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_inline(self):
"""
Inline models which inherit from a common parent are correctly handled.
"""
foo_user = "foo username"
bar_user = "bar username"
name_re = re.compile(b'name="(.*?)"')
# test the add case
response = self.client.get(reverse('admin:admin_views_persona_add'))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
# test the add case
post_data = {
"name": "Test Name",
# inline data
"accounts-TOTAL_FORMS": "1",
"accounts-INITIAL_FORMS": "0",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": foo_user,
"accounts-2-TOTAL_FORMS": "1",
"accounts-2-INITIAL_FORMS": "0",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": bar_user,
}
response = self.client.post(reverse('admin:admin_views_persona_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
persona_id = Persona.objects.all()[0].id
foo_id = FooAccount.objects.all()[0].id
bar_id = BarAccount.objects.all()[0].id
# test the edit case
response = self.client.get(reverse('admin:admin_views_persona_change', args=(persona_id,)))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
post_data = {
"name": "Test Name",
"accounts-TOTAL_FORMS": "2",
"accounts-INITIAL_FORMS": "1",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": "%s-1" % foo_user,
"accounts-0-account_ptr": str(foo_id),
"accounts-0-persona": str(persona_id),
"accounts-2-TOTAL_FORMS": "2",
"accounts-2-INITIAL_FORMS": "1",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": "%s-1" % bar_user,
"accounts-2-0-account_ptr": str(bar_id),
"accounts-2-0-persona": str(persona_id),
}
response = self.client.post(reverse('admin:admin_views_persona_change', args=(persona_id,)), post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, "%s-1" % foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, "%s-1" % bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestCustomChangeList(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_custom_changelist(self):
"""
Validate that a custom ChangeList class can be used (#9749)
"""
# Insert some data
post_data = {"name": "First Gadget"}
response = self.client.post(reverse('admin:admin_views_gadget_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
# Hit the page once to get messages out of the queue message list
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
# Data is still not visible on the page
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
self.assertNotContains(response, 'First Gadget')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestInlineNotEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_GET_parent_add(self):
"""
InlineModelAdmin broken?
"""
response = self.client.get(reverse('admin:admin_views_parent_add'))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomQuerysetTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.pks = [EmptyModel.objects.create().id for i in range(3)]
def setUp(self):
self.client.force_login(self.superuser)
self.super_login = {
REDIRECT_FIELD_NAME: reverse('admin:index'),
'username': 'super',
'password': 'secret',
}
def test_changelist_view(self):
response = self.client.get(reverse('admin:admin_views_emptymodel_changelist'))
for i in self.pks:
if i > 1:
self.assertContains(response, 'Primary key = %s' % i)
else:
self.assertNotContains(response, 'Primary key = %s' % i)
def test_changelist_view_count_queries(self):
# create 2 Person objects
Person.objects.create(name='person1', gender=1)
Person.objects.create(name='person2', gender=2)
changelist_url = reverse('admin:admin_views_person_changelist')
# 5 queries are expected: 1 for the session, 1 for the user,
# 2 for the counts and 1 for the objects on the page
with self.assertNumQueries(5):
resp = self.client.get(changelist_url)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'q': 'not_in_name'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 0 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 0 selected')
with self.assertNumQueries(5):
extra = {'q': 'person'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'gender__exact': '1'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 1 selected')
self.assertEqual(resp.context['selection_note_all'], '1 selected')
def test_change_view(self):
for i in self.pks:
url = reverse('admin:admin_views_emptymodel_change', args=(i,))
response = self.client.get(url, follow=True)
if i > 1:
self.assertEqual(response.status_code, 200)
else:
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['empty model with ID “1” doesn’t exist. Perhaps it was deleted?']
)
def test_add_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(CoverLetter.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"author": "Candidate, Best",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_coverletter_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = CoverLetter.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'Candidate, Best</a>” was added successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(ShortMessage.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"content": "What's this SMS thing?",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_shortmessage_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name
sm = ShortMessage.objects.all()[0]
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_add_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(Telegram.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "Urgent telegram",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = Telegram.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Urgent telegram</a>” was added successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(Paper.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name
p = Paper.objects.all()[0]
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_edit_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
cl = CoverLetter.objects.create(author="John Doe")
self.assertEqual(CoverLetter.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_coverletter_change', args=(cl.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"author": "John Doe II",
"_save": "Save",
}
url = reverse('admin:admin_views_coverletter_change', args=(cl.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name. Instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'John Doe II</a>” was changed successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(cl.pk,)), html=True
)
# model has no __str__ method
sm = ShortMessage.objects.create(content="This is expensive")
self.assertEqual(ShortMessage.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"content": "Too expensive",
"_save": "Save",
}
url = reverse('admin:admin_views_shortmessage_change', args=(sm.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_edit_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
t = Telegram.objects.create(title="First Telegram")
self.assertEqual(Telegram.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_telegram_change', args=(t.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "Telegram without typo",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_change', args=(t.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name. The instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Telegram without typo</a>” was changed successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(t.pk,)), html=True
)
# model has no __str__ method
p = Paper.objects.create(title="My Paper Title")
self.assertEqual(Paper.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_paper_change', args=(p.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_change', args=(p.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_history_view_custom_qs(self):
"""
Custom querysets are considered for the admin history view.
"""
self.client.post(reverse('admin:login'), self.super_login)
FilteredManager.objects.create(pk=1)
FilteredManager.objects.create(pk=2)
response = self.client.get(reverse('admin:admin_views_filteredmanager_changelist'))
self.assertContains(response, "PK=1")
self.assertContains(response, "PK=2")
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(1,))).status_code, 200
)
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(2,))).status_code, 200
)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineFileUploadTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
file1 = tempfile.NamedTemporaryFile(suffix=".file1")
file1.write(b'a' * (2 ** 21))
filename = file1.name
file1.close()
cls.gallery = Gallery.objects.create(name='Test Gallery')
cls.picture = Picture.objects.create(
name='Test Picture',
image=filename,
gallery=cls.gallery,
)
def setUp(self):
self.client.force_login(self.superuser)
def test_form_has_multipart_enctype(self):
response = self.client.get(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,))
)
self.assertIs(response.context['has_file_field'], True)
self.assertContains(response, MULTIPART_ENCTYPE)
def test_inline_file_upload_edit_validation_error_post(self):
"""
Inline file uploads correctly display prior data (#10002).
"""
post_data = {
"name": "Test Gallery",
"pictures-TOTAL_FORMS": "2",
"pictures-INITIAL_FORMS": "1",
"pictures-MAX_NUM_FORMS": "0",
"pictures-0-id": str(self.picture.id),
"pictures-0-gallery": str(self.gallery.id),
"pictures-0-name": "Test Picture",
"pictures-0-image": "",
"pictures-1-id": "",
"pictures-1-gallery": str(self.gallery.id),
"pictures-1-name": "Test Picture 2",
"pictures-1-image": "",
}
response = self.client.post(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,)), post_data
)
self.assertContains(response, b"Currently")
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.collector = Collector.objects.create(pk=1, name='John Fowles')
def setUp(self):
self.post_data = {
"name": "Test Name",
"widget_set-TOTAL_FORMS": "3",
"widget_set-INITIAL_FORMS": "0",
"widget_set-MAX_NUM_FORMS": "0",
"widget_set-0-id": "",
"widget_set-0-owner": "1",
"widget_set-0-name": "",
"widget_set-1-id": "",
"widget_set-1-owner": "1",
"widget_set-1-name": "",
"widget_set-2-id": "",
"widget_set-2-owner": "1",
"widget_set-2-name": "",
"doohickey_set-TOTAL_FORMS": "3",
"doohickey_set-INITIAL_FORMS": "0",
"doohickey_set-MAX_NUM_FORMS": "0",
"doohickey_set-0-owner": "1",
"doohickey_set-0-code": "",
"doohickey_set-0-name": "",
"doohickey_set-1-owner": "1",
"doohickey_set-1-code": "",
"doohickey_set-1-name": "",
"doohickey_set-2-owner": "1",
"doohickey_set-2-code": "",
"doohickey_set-2-name": "",
"grommet_set-TOTAL_FORMS": "3",
"grommet_set-INITIAL_FORMS": "0",
"grommet_set-MAX_NUM_FORMS": "0",
"grommet_set-0-code": "",
"grommet_set-0-owner": "1",
"grommet_set-0-name": "",
"grommet_set-1-code": "",
"grommet_set-1-owner": "1",
"grommet_set-1-name": "",
"grommet_set-2-code": "",
"grommet_set-2-owner": "1",
"grommet_set-2-name": "",
"whatsit_set-TOTAL_FORMS": "3",
"whatsit_set-INITIAL_FORMS": "0",
"whatsit_set-MAX_NUM_FORMS": "0",
"whatsit_set-0-owner": "1",
"whatsit_set-0-index": "",
"whatsit_set-0-name": "",
"whatsit_set-1-owner": "1",
"whatsit_set-1-index": "",
"whatsit_set-1-name": "",
"whatsit_set-2-owner": "1",
"whatsit_set-2-index": "",
"whatsit_set-2-name": "",
"fancydoodad_set-TOTAL_FORMS": "3",
"fancydoodad_set-INITIAL_FORMS": "0",
"fancydoodad_set-MAX_NUM_FORMS": "0",
"fancydoodad_set-0-doodad_ptr": "",
"fancydoodad_set-0-owner": "1",
"fancydoodad_set-0-name": "",
"fancydoodad_set-0-expensive": "on",
"fancydoodad_set-1-doodad_ptr": "",
"fancydoodad_set-1-owner": "1",
"fancydoodad_set-1-name": "",
"fancydoodad_set-1-expensive": "on",
"fancydoodad_set-2-doodad_ptr": "",
"fancydoodad_set-2-owner": "1",
"fancydoodad_set-2-name": "",
"fancydoodad_set-2-expensive": "on",
"category_set-TOTAL_FORMS": "3",
"category_set-INITIAL_FORMS": "0",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "",
"category_set-0-id": "",
"category_set-0-collector": "1",
"category_set-1-order": "",
"category_set-1-id": "",
"category_set-1-collector": "1",
"category_set-2-order": "",
"category_set-2-id": "",
"category_set-2-collector": "1",
}
self.client.force_login(self.superuser)
def test_simple_inline(self):
"A simple model can be saved as inlines"
# First add a new inline
self.post_data['widget_set-0-name'] = "Widget 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
widget_id = Widget.objects.all()[0].id
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="widget_set-0-id"')
# No file or image fields, no enctype on the forms
self.assertIs(response.context['has_file_field'], False)
self.assertNotContains(response, MULTIPART_ENCTYPE)
# Now resave that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
# Now modify that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1 Updated")
def test_explicit_autofield_inline(self):
"A model with an explicit autofield primary key can be saved as inlines. Regression for #8093"
# First add a new inline
self.post_data['grommet_set-0-name'] = "Grommet 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="grommet_set-0-code"')
# Now resave that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# Now modify that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1 Updated")
def test_char_pk_inline(self):
"A model with a character PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="doohickey_set-0-code"')
# Now resave that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# Now modify that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1 Updated")
def test_integer_pk_inline(self):
"A model with an integer PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="whatsit_set-0-index"')
# Now resave that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# Now modify that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1 Updated")
def test_inherited_inline(self):
"An inherited model can be saved as inlines. Regression for #11042"
# First add a new inline
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
doodad_pk = FancyDoodad.objects.all()[0].pk
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="fancydoodad_set-0-doodad_ptr"')
# Now resave that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
# Now modify that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1 Updated")
def test_ordered_inline(self):
"""
An inline with an editable ordering fields is updated correctly.
"""
# Create some objects with an initial ordering
Category.objects.create(id=1, order=1, collector=self.collector)
Category.objects.create(id=2, order=2, collector=self.collector)
Category.objects.create(id=3, order=0, collector=self.collector)
Category.objects.create(id=4, order=0, collector=self.collector)
# NB: The order values must be changed so that the items are reordered.
self.post_data.update({
"name": "Frederick Clegg",
"category_set-TOTAL_FORMS": "7",
"category_set-INITIAL_FORMS": "4",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "14",
"category_set-0-id": "1",
"category_set-0-collector": "1",
"category_set-1-order": "13",
"category_set-1-id": "2",
"category_set-1-collector": "1",
"category_set-2-order": "1",
"category_set-2-id": "3",
"category_set-2-collector": "1",
"category_set-3-order": "0",
"category_set-3-id": "4",
"category_set-3-collector": "1",
"category_set-4-order": "",
"category_set-4-id": "",
"category_set-4-collector": "1",
"category_set-5-order": "",
"category_set-5-id": "",
"category_set-5-collector": "1",
"category_set-6-order": "",
"category_set-6-id": "",
"category_set-6-collector": "1",
})
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(self.collector.category_set.count(), 4)
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
@override_settings(ROOT_URLCONF='admin_views.urls')
class NeverCacheTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
def setUp(self):
self.client.force_login(self.superuser)
def test_admin_index(self):
"Check the never-cache status of the main index"
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_app_index(self):
"Check the never-cache status of an application index"
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(get_max_age(response), 0)
def test_model_index(self):
"Check the never-cache status of a model index"
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
self.assertEqual(get_max_age(response), 0)
def test_model_add(self):
"Check the never-cache status of a model add page"
response = self.client.get(reverse('admin:admin_views_fabric_add'))
self.assertEqual(get_max_age(response), 0)
def test_model_view(self):
"Check the never-cache status of a model edit page"
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_history(self):
"Check the never-cache status of a model history page"
response = self.client.get(reverse('admin:admin_views_section_history', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_delete(self):
"Check the never-cache status of a model delete page"
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_login(self):
"Check the never-cache status of login views"
self.client.logout()
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_logout(self):
"Check the never-cache status of logout view"
response = self.client.get(reverse('admin:logout'))
self.assertEqual(get_max_age(response), 0)
def test_password_change(self):
"Check the never-cache status of the password change view"
self.client.logout()
response = self.client.get(reverse('admin:password_change'))
self.assertIsNone(get_max_age(response))
def test_password_change_done(self):
"Check the never-cache status of the password change done view"
response = self.client.get(reverse('admin:password_change_done'))
self.assertIsNone(get_max_age(response))
def test_JS_i18n(self):
"Check the never-cache status of the JavaScript i18n view"
response = self.client.get(reverse('admin:jsi18n'))
self.assertIsNone(get_max_age(response))
@override_settings(ROOT_URLCONF='admin_views.urls')
class PrePopulatedTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_prepopulated_on(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_add'))
self.assertContains(response, ""id": "#id_slug"")
self.assertContains(response, ""dependency_ids": ["#id_title"]")
self.assertContains(response, ""id": "#id_prepopulatedsubpost_set-0-subslug"")
def test_prepopulated_off(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, "A Long Title")
self.assertNotContains(response, ""id": "#id_slug"")
self.assertNotContains(response, ""dependency_ids": ["#id_title"]")
self.assertNotContains(
response,
""id": "#id_prepopulatedsubpost_set-0-subslug""
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_prepopulated_maxlength_localized(self):
"""
Regression test for #15938: if USE_THOUSAND_SEPARATOR is set, make sure
that maxLength (in the JavaScript) is rendered without separators.
"""
response = self.client.get(reverse('admin:admin_views_prepopulatedpostlargeslug_add'))
self.assertContains(response, ""maxLength": 1000") # instead of 1,000
def test_view_only_add_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'
which is present in the add view, even if the
ModelAdmin.has_change_permission() returns False.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_add'))
self.assertContains(response, 'data-prepopulated-fields=')
self.assertContains(response, '"id": "#id_slug"')
def test_view_only_change_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'. That
doesn't break a view-only change view.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, 'data-prepopulated-fields="[]"')
self.assertContains(response, '<div class="readonly">%s</div>' % self.p1.slug)
@override_settings(ROOT_URLCONF='admin_views.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_views'] + AdminSeleniumTestCase.available_apps
def setUp(self):
self.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
self.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def test_login_button_centered(self):
from selenium.webdriver.common.by import By
self.selenium.get(self.live_server_url + reverse('admin:login'))
button = self.selenium.find_element(By.CSS_SELECTOR, '.submit-row input')
offset_left = button.get_property('offsetLeft')
offset_right = (
button.get_property('offsetParent').get_property('offsetWidth') -
(offset_left + button.get_property('offsetWidth'))
)
# Use assertAlmostEqual to avoid pixel rounding errors.
self.assertAlmostEqual(offset_left, offset_right, delta=3)
def test_prepopulated_fields(self):
"""
The JavaScript-automated prepopulated fields work with the main form
and with stacked and tabular inlines.
Refs #13068, #9264, #9983, #9784.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_mainprepopulated_add'))
self.wait_for('.select2')
# Main form ----------------------------------------------------------
self.selenium.find_element(By.ID, 'id_pubdate').send_keys('2012-02-18')
self.select_option('#id_status', 'option two')
self.selenium.find_element(By.ID, 'id_name').send_keys(' the mAin nÀMë and it\'s awεšomeıııİ')
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
slug3 = self.selenium.find_element(By.ID, 'id_slug3').get_attribute('value')
self.assertEqual(slug1, 'the-main-name-and-its-awesomeiiii-2012-02-18')
self.assertEqual(slug2, 'option-two-the-main-name-and-its-awesomeiiii')
self.assertEqual(slug3, 'the-main-n\xe0m\xeb-and-its-aw\u03b5\u0161ome\u0131\u0131\u0131i')
# Stacked inlines ----------------------------------------------------
# Initial inline
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-pubdate').send_keys('2011-12-17')
self.select_option('#id_relatedprepopulated_set-0-status', 'option one')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-name').send_keys(
' here is a sŤāÇkeð inline ! '
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'here-is-a-stacked-inline-2011-12-17')
self.assertEqual(slug2, 'option-one-here-is-a-stacked-inline')
initial_select2_inputs = self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')
# Inline formsets have empty/invisible forms.
# Only the 4 visible select2 inputs are initialized.
num_initial_select2_inputs = len(initial_select2_inputs)
self.assertEqual(num_initial_select2_inputs, 4)
# Add an inline
self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[0].click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 2
)
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-pubdate').send_keys('1999-01-25')
self.select_option('#id_relatedprepopulated_set-1-status', 'option two')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-name').send_keys(
' now you haVe anöther sŤāÇkeð inline with a very ... '
'loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooog text... '
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-slug2').get_attribute('value')
# 50 characters maximum for slug1 field
self.assertEqual(slug1, 'now-you-have-another-stacked-inline-with-a-very-lo')
# 60 characters maximum for slug2 field
self.assertEqual(slug2, 'option-two-now-you-have-another-stacked-inline-with-a-very-l')
# Tabular inlines ----------------------------------------------------
# Initial inline
element = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-status')
self.selenium.execute_script('window.scrollTo(0, %s);' % element.location['y'])
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-pubdate').send_keys('1234-12-07')
self.select_option('#id_relatedprepopulated_set-2-0-status', 'option two')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-name').send_keys(
'And now, with a tÃbűlaŘ inline !!!'
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'and-now-with-a-tabular-inline-1234-12-07')
self.assertEqual(slug2, 'option-two-and-now-with-a-tabular-inline')
# Add an inline
# Button may be outside the browser frame.
element = self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[1]
self.selenium.execute_script('window.scrollTo(0, %s);' % element.location['y'])
element.click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 4
)
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-pubdate').send_keys('1981-08-22')
self.select_option('#id_relatedprepopulated_set-2-1-status', 'option one')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-name').send_keys(
r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters'
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-slug2').get_attribute('value')
self.assertEqual(slug1, 'tabular-inline-with-ignored-characters-1981-08-22')
self.assertEqual(slug2, 'option-one-tabular-inline-with-ignored-characters')
# Add an inline without an initial inline.
# The button is outside of the browser frame.
self.selenium.execute_script("window.scrollTo(0, document.body.scrollHeight);")
self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[2].click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 6
)
# Save and check that everything is properly stored in the database
with self.wait_page_loaded():
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.assertEqual(MainPrepopulated.objects.all().count(), 1)
MainPrepopulated.objects.get(
name=' the mAin nÀMë and it\'s awεšomeıııİ',
pubdate='2012-02-18',
status='option two',
slug1='the-main-name-and-its-awesomeiiii-2012-02-18',
slug2='option-two-the-main-name-and-its-awesomeiiii',
slug3='the-main-nàmë-and-its-awεšomeıııi',
)
self.assertEqual(RelatedPrepopulated.objects.all().count(), 4)
RelatedPrepopulated.objects.get(
name=' here is a sŤāÇkeð inline ! ',
pubdate='2011-12-17',
status='option one',
slug1='here-is-a-stacked-inline-2011-12-17',
slug2='option-one-here-is-a-stacked-inline',
)
RelatedPrepopulated.objects.get(
# 75 characters in name field
name=' now you haVe anöther sŤāÇkeð inline with a very ... loooooooooooooooooo',
pubdate='1999-01-25',
status='option two',
slug1='now-you-have-another-stacked-inline-with-a-very-lo',
slug2='option-two-now-you-have-another-stacked-inline-with-a-very-l',
)
RelatedPrepopulated.objects.get(
name='And now, with a tÃbűlaŘ inline !!!',
pubdate='1234-12-07',
status='option two',
slug1='and-now-with-a-tabular-inline-1234-12-07',
slug2='option-two-and-now-with-a-tabular-inline',
)
RelatedPrepopulated.objects.get(
name=r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters',
pubdate='1981-08-22',
status='option one',
slug1='tabular-inline-with-ignored-characters-1981-08-22',
slug2='option-one-tabular-inline-with-ignored-characters',
)
def test_populate_existing_object(self):
"""
The prepopulation works for existing objects too, as long as
the original field is empty (#19082).
"""
from selenium.webdriver.common.by import By
# Slugs are empty to start with.
item = MainPrepopulated.objects.create(
name=' this is the mAin nÀMë',
pubdate='2012-02-18',
status='option two',
slug1='',
slug2='',
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
object_url = self.live_server_url + reverse('admin:admin_views_mainprepopulated_change', args=(item.id,))
self.selenium.get(object_url)
self.selenium.find_element(By.ID, 'id_name').send_keys(' the best')
# The slugs got prepopulated since they were originally empty
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
# Save the object
with self.wait_page_loaded():
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.get(object_url)
self.selenium.find_element(By.ID, 'id_name').send_keys(' hello')
# The slugs got prepopulated didn't change since they were originally not empty
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
def test_collapsible_fieldset(self):
"""
The 'collapse' class in fieldsets definition allows to
show/hide the appropriate field section.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_add'))
self.assertFalse(self.selenium.find_element(By.ID, 'id_title').is_displayed())
self.selenium.find_elements(By.LINK_TEXT, 'Show')[0].click()
self.assertTrue(self.selenium.find_element(By.ID, 'id_title').is_displayed())
self.assertEqual(self.selenium.find_element(By.ID, 'fieldsetcollapser0').text, "Hide")
def test_first_field_focus(self):
"""JavaScript-assisted auto-focus on first usable form field."""
from selenium.webdriver.common.by import By
# First form field has a single widget
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_picture_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element(By.ID, 'id_name')
)
# First form field has a MultiWidget
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_reservation_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element(By.ID, 'id_start_date_0')
)
def test_cancel_delete_confirmation(self):
"Cancelling the deletion of an object takes the user back one page."
from selenium.webdriver.common.by import By
pizza = Pizza.objects.create(name="Double Cheese")
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element(By.CLASS_NAME, 'deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element(By.CLASS_NAME, 'cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
def test_cancel_delete_related_confirmation(self):
"""
Cancelling the deletion of an object with relations takes the user back
one page.
"""
from selenium.webdriver.common.by import By
pizza = Pizza.objects.create(name="Double Cheese")
topping1 = Topping.objects.create(name="Cheddar")
topping2 = Topping.objects.create(name="Mozzarella")
pizza.toppings.add(topping1, topping2)
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element(By.CLASS_NAME, 'deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element(By.CLASS_NAME, 'cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
self.assertEqual(Topping.objects.count(), 2)
def test_list_editable_popups(self):
"""
list_editable foreign keys have add/change popups.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
s1 = Section.objects.create(name='Test section')
Article.objects.create(
title='foo',
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=s1,
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_changelist'))
# Change popup
self.selenium.find_element(By.ID, 'change_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Change section')
name_input = self.selenium.find_element(By.ID, 'id_name')
name_input.clear()
name_input.send_keys('<i>edited section</i>')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# Hide sidebar.
toggle_button = self.selenium.find_element(By.CSS_SELECTOR, '#toggle-nav-sidebar')
toggle_button.click()
select = Select(self.selenium.find_element(By.ID, 'id_form-0-section'))
self.assertEqual(select.first_selected_option.text, '<i>edited section</i>')
# Rendered select2 input.
select2_display = self.selenium.find_element(By.CLASS_NAME, 'select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\n<i>edited section</i>')
# Add popup
self.selenium.find_element(By.ID, 'add_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Add section')
self.selenium.find_element(By.ID, 'id_name').send_keys('new section')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_form-0-section'))
self.assertEqual(select.first_selected_option.text, 'new section')
select2_display = self.selenium.find_element(By.CLASS_NAME, 'select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\nnew section')
def test_inline_uuid_pk_edit_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'change_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
self.assertEqual(select.first_selected_option.text, str(parent.id))
self.assertEqual(select.first_selected_option.get_attribute('value'), str(parent.id))
def test_inline_uuid_pk_add_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_relatedwithuuidpkmodel_add'))
self.selenium.find_element(By.ID, 'add_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
uuid_id = str(ParentWithUUIDPK.objects.first().id)
self.assertEqual(select.first_selected_option.text, uuid_id)
self.assertEqual(select.first_selected_option.get_attribute('value'), uuid_id)
def test_inline_uuid_pk_delete_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//input[@value="Yes, I’m sure"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
self.assertEqual(ParentWithUUIDPK.objects.count(), 0)
self.assertEqual(select.first_selected_option.text, '---------')
self.assertEqual(select.first_selected_option.get_attribute('value'), '')
def test_inline_with_popup_cancel_delete(self):
"""Clicking ""No, take me back" on a delete popup closes the window."""
from selenium.webdriver.common.by import By
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//a[text()="No, take me back"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
self.assertEqual(len(self.selenium.window_handles), 1)
def test_list_editable_raw_id_fields(self):
from selenium.webdriver.common.by import By
parent = ParentWithUUIDPK.objects.create(title='test')
parent2 = ParentWithUUIDPK.objects.create(title='test2')
RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_changelist', current_app=site2.name)
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'lookup_id_form-0-parent').click()
self.wait_for_and_switch_to_popup()
# Select "parent2" in the popup.
self.selenium.find_element(By.LINK_TEXT, str(parent2.pk)).click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# The newly selected pk should appear in the raw id input.
value = self.selenium.find_element(By.ID, 'id_form-0-parent').get_attribute('value')
self.assertEqual(value, str(parent2.pk))
def test_input_element_font(self):
"""
Browsers' default stylesheets override the font of inputs. The admin
adds additional CSS to handle this.
"""
from selenium.webdriver.common.by import By
self.selenium.get(self.live_server_url + reverse('admin:login'))
element = self.selenium.find_element(By.ID, 'id_username')
# Some browsers quotes the fonts, some don't.
fonts = [
font.strip().strip('"')
for font in element.value_of_css_property('font-family').split(',')
]
self.assertEqual(
fonts,
['Roboto', 'Lucida Grande', 'Verdana', 'Arial', 'sans-serif'],
)
def test_search_input_filtered_page(self):
from selenium.webdriver.common.by import By
Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='Grace Hopper', gender=1, alive=False)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
person_url = reverse('admin:admin_views_person_changelist') + '?q=Gui'
self.selenium.get(self.live_server_url + person_url)
self.assertGreater(
self.selenium.find_element(By.ID, 'searchbar').rect['width'],
50,
)
def test_related_popup_index(self):
"""
Create a chain of 'self' related objects via popups.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
add_url = reverse('admin:admin_views_box_add', current_app=site.name)
self.selenium.get(self.live_server_url + add_url)
base_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup()
popup_window_test = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=3)
popup_window_test2 = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test2')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=4)
self.selenium.find_element(By.ID, 'id_title').send_keys('test3')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(popup_window_test2)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test3").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(popup_window_test)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test2").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(base_window)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
def test_related_popup_incorrect_close(self):
"""
Cleanup child popups when closing a parent popup.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
add_url = reverse('admin:admin_views_box_add', current_app=site.name)
self.selenium.get(self.live_server_url + add_url)
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup()
test_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=3)
test2_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test2')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=4)
self.assertEqual(len(self.selenium.window_handles), 4)
self.selenium.switch_to.window(test2_window)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.wait_until(lambda d: len(d.window_handles) == 2, 1)
self.assertEqual(len(self.selenium.window_handles), 2)
# Close final popup to clean up test.
self.selenium.switch_to.window(test_window)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.wait_until(lambda d: len(d.window_handles) == 1, 1)
self.selenium.switch_to.window(self.selenium.window_handles[-1])
@override_settings(ROOT_URLCONF='admin_views.urls')
class ReadonlyTest(AdminFieldExtractionMixin, TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_readonly_get(self):
response = self.client.get(reverse('admin:admin_views_post_add'))
self.assertNotContains(response, 'name="posted"')
# 3 fields + 2 submit buttons + 5 inline management form fields, + 2
# hidden fields for inlines + 1 field for the inline + 2 empty form
self.assertContains(response, "<input", count=16)
self.assertContains(response, formats.localize(datetime.date.today()))
self.assertContains(response, "<label>Awesomeness level:</label>")
self.assertContains(response, "Very awesome.")
self.assertContains(response, "Unknown coolness.")
self.assertContains(response, "foo")
# Multiline text in a readonly field gets <br> tags
self.assertContains(response, 'Multiline<br>test<br>string')
self.assertContains(response, '<div class="readonly">Multiline<br>html<br>content</div>', html=True)
self.assertContains(response, 'InlineMultiline<br>test<br>string')
self.assertContains(response, formats.localize(datetime.date.today() - datetime.timedelta(days=7)))
self.assertContains(response, '<div class="form-row field-coolness">')
self.assertContains(response, '<div class="form-row field-awesomeness_level">')
self.assertContains(response, '<div class="form-row field-posted">')
self.assertContains(response, '<div class="form-row field-value">')
self.assertContains(response, '<div class="form-row">')
self.assertContains(response, '<div class="help">', 3)
self.assertContains(
response,
'<div class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the content (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the date (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
p = Post.objects.create(title="I worked on readonly_fields", content="Its good stuff")
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
self.assertContains(response, "%d amount of cool" % p.pk)
def test_readonly_text_field(self):
p = Post.objects.create(
title="Readonly test", content="test",
readonly_content='test\r\n\r\ntest\r\n\r\ntest\r\n\r\ntest',
)
Link.objects.create(
url="http://www.djangoproject.com", post=p,
readonly_link_content="test\r\nlink",
)
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
# Checking readonly field.
self.assertContains(response, 'test<br><br>test<br><br>test<br><br>test')
# Checking readonly field in inline.
self.assertContains(response, 'test<br>link')
def test_readonly_post(self):
data = {
"title": "Django Got Readonly Fields",
"content": "This is an incredible development.",
"link_set-TOTAL_FORMS": "1",
"link_set-INITIAL_FORMS": "0",
"link_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 1)
p = Post.objects.get()
self.assertEqual(p.posted, datetime.date.today())
data["posted"] = "10-8-1990" # some date that's not today
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 2)
p = Post.objects.order_by('-id')[0]
self.assertEqual(p.posted, datetime.date.today())
def test_readonly_manytomany(self):
"Regression test for #13004"
response = self.client.get(reverse('admin:admin_views_pizza_add'))
self.assertEqual(response.status_code, 200)
def test_user_password_change_limited_queryset(self):
su = User.objects.filter(is_superuser=True)[0]
response = self.client.get(reverse('admin2:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 404)
def test_change_form_renders_correct_null_choice_value(self):
"""
Regression test for #17911.
"""
choice = Choice.objects.create(choice=None)
response = self.client.get(reverse('admin:admin_views_choice_change', args=(choice.pk,)))
self.assertContains(response, '<div class="readonly">No opinion</div>', html=True)
def _test_readonly_foreignkey_links(self, admin_site):
"""
ForeignKey readonly fields render as links if the target model is
registered in admin.
"""
chapter = Chapter.objects.create(
title='Chapter 1',
content='content',
book=Book.objects.create(name='Book 1'),
)
language = Language.objects.create(iso='_40', name='Test')
obj = ReadOnlyRelatedField.objects.create(
chapter=chapter,
language=language,
user=self.superuser,
)
response = self.client.get(
reverse(f'{admin_site}:admin_views_readonlyrelatedfield_change', args=(obj.pk,)),
)
# Related ForeignKey object registered in admin.
user_url = reverse(f'{admin_site}:auth_user_change', args=(self.superuser.pk,))
self.assertContains(
response,
'<div class="readonly"><a href="%s">super</a></div>' % user_url,
html=True,
)
# Related ForeignKey with the string primary key registered in admin.
language_url = reverse(
f'{admin_site}:admin_views_language_change',
args=(quote(language.pk),),
)
self.assertContains(
response,
'<div class="readonly"><a href="%s">_40</a></div>' % language_url,
html=True,
)
# Related ForeignKey object not registered in admin.
self.assertContains(response, '<div class="readonly">Chapter 1</div>', html=True)
def test_readonly_foreignkey_links_default_admin_site(self):
self._test_readonly_foreignkey_links('admin')
def test_readonly_foreignkey_links_custom_admin_site(self):
self._test_readonly_foreignkey_links('namespaced_admin')
def test_readonly_manytomany_backwards_ref(self):
"""
Regression test for #16433 - backwards references for related objects
broke if the related field is read-only due to the help_text attribute
"""
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_topping_add'))
self.assertEqual(response.status_code, 200)
def test_readonly_manytomany_forwards_ref(self):
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_pizza_change', args=(pizza.pk,)))
self.assertContains(response, '<label>Toppings:</label>', html=True)
self.assertContains(response, '<div class="readonly">Salami</div>', html=True)
def test_readonly_onetoone_backwards_ref(self):
"""
Can reference a reverse OneToOneField in ModelAdmin.readonly_fields.
"""
v1 = Villain.objects.create(name='Adam')
pl = Plot.objects.create(name='Test Plot', team_leader=v1, contact=v1)
pd = PlotDetails.objects.create(details='Brand New Plot', plot=pl)
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
pd_url = reverse('admin:admin_views_plotdetails_change', args=(pd.pk,))
self.assertEqual(field.contents(), '<a href="%s">Brand New Plot</a>' % pd_url)
# The reverse relation also works if the OneToOneField is null.
pd.plot = None
pd.save()
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
self.assertEqual(field.contents(), '-') # default empty value
def test_readonly_field_overrides(self):
"""
Regression test for #22087 - ModelForm Meta overrides are ignored by
AdminReadonlyField
"""
p = FieldOverridePost.objects.create(title="Test Post", content="Test Content")
response = self.client.get(reverse('admin:admin_views_fieldoverridepost_change', args=(p.pk,)))
self.assertContains(response, '<div class="help">Overridden help text for the date</div>')
self.assertContains(response, '<label for="id_public">Overridden public label:</label>', html=True)
self.assertNotContains(response, 'Some help text for the date (with Unicode ŠĐĆŽćžšđ)')
def test_correct_autoescaping(self):
"""
Make sure that non-field readonly elements are properly autoescaped (#24461)
"""
section = Section.objects.create(name='<a>evil</a>')
response = self.client.get(reverse('admin:admin_views_section_change', args=(section.pk,)))
self.assertNotContains(response, "<a>evil</a>", status_code=200)
self.assertContains(response, "<a>evil</a>", status_code=200)
def test_label_suffix_translated(self):
pizza = Pizza.objects.create(name='Americano')
url = reverse('admin:admin_views_pizza_change', args=(pizza.pk,))
with self.settings(LANGUAGE_CODE='fr'):
response = self.client.get(url)
self.assertContains(response, '<label>Toppings\u00A0:</label>', html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class LimitChoicesToInAdminTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to_as_callable(self):
"""Test for ticket 2445 changes to admin."""
threepwood = Character.objects.create(
username='threepwood',
last_action=datetime.datetime.today() + datetime.timedelta(days=1),
)
marley = Character.objects.create(
username='marley',
last_action=datetime.datetime.today() - datetime.timedelta(days=1),
)
response = self.client.get(reverse('admin:admin_views_stumpjoke_add'))
# The allowed option should appear twice; the limited option should not appear.
self.assertContains(response, threepwood.username, count=2)
self.assertNotContains(response, marley.username)
@override_settings(ROOT_URLCONF='admin_views.urls')
class RawIdFieldsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to(self):
"""Regression test for 14880"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True,
leader=actor,
country="England")
Inquisition.objects.create(expected=False,
leader=actor,
country="Spain")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_inquisition"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step also tests integers, strings and booleans in the
# lookup query string; in model we define inquisition field to have a
# limit_choices_to option that includes a filter on a string field
# (inquisition__actor__name), a filter on an integer field
# (inquisition__actor__age), and a filter on a boolean field
# (inquisition__expected).
response2 = self.client.get(popup_url)
self.assertContains(response2, "Spain")
self.assertNotContains(response2, "England")
def test_limit_choices_to_isnull_false(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant0"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=0 gets parsed correctly from the
# lookup query string; in model we define defendant0 field to have a
# limit_choices_to option that includes "actor__title__isnull=False".
response2 = self.client.get(popup_url)
self.assertContains(response2, "Kilbraken")
self.assertNotContains(response2, "Palin")
def test_limit_choices_to_isnull_true(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant1"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=1 gets parsed correctly from the
# lookup query string; in model we define defendant1 field to have a
# limit_choices_to option that includes "actor__title__isnull=True".
response2 = self.client.get(popup_url)
self.assertNotContains(response2, "Kilbraken")
self.assertContains(response2, "Palin")
def test_list_display_method_same_name_as_reverse_accessor(self):
"""
Should be able to use a ModelAdmin method in list_display that has the
same name as a reverse model field ("sketch" in this case).
"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True, leader=actor, country="England")
response = self.client.get(reverse('admin:admin_views_inquisition_changelist'))
self.assertContains(response, 'list-display-sketch')
@override_settings(ROOT_URLCONF='admin_views.urls')
class UserAdminTest(TestCase):
"""
Tests user CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
})
new_user = User.objects.get(username='newuser')
self.assertRedirects(response, reverse('admin:auth_user_change', args=(new_user.pk,)))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_save_continue_editing_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_continue': '1',
})
new_user = User.objects.get(username='newuser')
new_user_url = reverse('admin:auth_user_change', args=(new_user.pk,))
self.assertRedirects(response, new_user_url, fetch_redirect_response=False)
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
response = self.client.get(new_user_url)
self.assertContains(
response,
'<li class="success">The user “<a href="%s">'
'%s</a>” was added successfully. You may edit it again below.</li>'
% (new_user_url, new_user),
html=True,
)
def test_password_mismatch(self):
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'mismatch',
})
self.assertEqual(response.status_code, 200)
self.assertFormError(response, 'adminform', 'password', [])
self.assertFormError(response, 'adminform', 'password2', ['The two password fields didn’t match.'])
def test_user_fk_add_popup(self):
"""User addition through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_add'))
self.assertContains(response, 'class="related-widget-wrapper-link add-related" id="add_id_owner"')
response = self.client.get(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
def test_user_fk_change_popup(self):
"""User change through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_change', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_change', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
self.assertContains(response, '"action": "change"')
def test_user_fk_delete_popup(self):
"""User deletion through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_delete', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_delete', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
data = {
'post': 'yes',
IS_POPUP_VAR: '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"action": "delete"')
def test_save_add_another_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_addanother': '1',
})
new_user = User.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_user_add'))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_user_permission_performance(self):
u = User.objects.all()[0]
# Don't depend on a warm cache, see #17377.
ContentType.objects.clear_cache()
with self.assertNumQueries(10):
response = self.client.get(reverse('admin:auth_user_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
def test_form_url_present_in_context(self):
u = User.objects.all()[0]
response = self.client.get(reverse('admin3:auth_user_password_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context['form_url'], 'pony')
@override_settings(ROOT_URLCONF='admin_views.urls')
class GroupAdminTest(TestCase):
"""
Tests group CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
group_count = Group.objects.count()
response = self.client.post(reverse('admin:auth_group_add'), {
'name': 'newgroup',
})
Group.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_group_changelist'))
self.assertEqual(Group.objects.count(), group_count + 1)
def test_group_permission_performance(self):
g = Group.objects.create(name="test_group")
# Ensure no queries are skipped due to cached content type for Group.
ContentType.objects.clear_cache()
with self.assertNumQueries(8):
response = self.client.get(reverse('admin:auth_group_change', args=(g.pk,)))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class CSSTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_field_prefix_css_classes(self):
"""
Fields have a CSS class name with a 'field-' prefix.
"""
response = self.client.get(reverse('admin:admin_views_post_add'))
# The main form
self.assertContains(response, 'class="form-row field-title"')
self.assertContains(response, 'class="form-row field-content"')
self.assertContains(response, 'class="form-row field-public"')
self.assertContains(response, 'class="form-row field-awesomeness_level"')
self.assertContains(response, 'class="form-row field-coolness"')
self.assertContains(response, 'class="form-row field-value"')
self.assertContains(response, 'class="form-row"') # The lambda function
# The tabular inline
self.assertContains(response, '<td class="field-url">')
self.assertContains(response, '<td class="field-posted">')
def test_index_css_classes(self):
"""
CSS class names are used for each app and model on the admin index
pages (#17050).
"""
# General index page
response = self.client.get(reverse('admin:index'))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
# App index page
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
def test_app_model_in_form_body_class(self):
"""
Ensure app and model tag are correctly read by change_form template
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_list_body_class(self):
"""
Ensure app and model tag are correctly read by change_list template
"""
response = self.client.get(reverse('admin:admin_views_section_changelist'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_delete_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by delete_confirmation
template
"""
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_app_index_body_class(self):
"""
Ensure app and model tag are correctly read by app_index template
"""
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<body class=" dashboard app-admin_views')
def test_app_model_in_delete_selected_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by
delete_selected_confirmation template
"""
action_data = {
ACTION_CHECKBOX_NAME: [self.s1.pk],
'action': 'delete_selected',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_section_changelist'), action_data)
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_changelist_field_classes(self):
"""
Cells of the change list table should contain the field name in their class attribute
Refs #11195.
"""
Podcast.objects.create(name="Django Dose", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertContains(response, '<th class="field-name">')
self.assertContains(response, '<td class="field-release_date nowrap">')
self.assertContains(response, '<td class="action-checkbox">')
try:
import docutils
except ImportError:
docutils = None
@unittest.skipUnless(docutils, "no docutils installed.")
@override_settings(ROOT_URLCONF='admin_views.urls')
@modify_settings(INSTALLED_APPS={'append': ['django.contrib.admindocs', 'django.contrib.flatpages']})
class AdminDocsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_tags(self):
response = self.client.get(reverse('django-admindocs-tags'))
# The builtin tag group exists
self.assertContains(response, "<h2>Built-in tags</h2>", count=2, html=True)
# A builtin tag exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-autoescape">autoescape</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-autoescape">autoescape</a></li>', html=True)
# An app tag exists in both the index and detail
self.assertContains(response, '<h3 id="flatpages-get_flatpages">get_flatpages</h3>', html=True)
self.assertContains(response, '<li><a href="#flatpages-get_flatpages">get_flatpages</a></li>', html=True)
# The admin list tag group exists
self.assertContains(response, "<h2>admin_list</h2>", count=2, html=True)
# An admin list tag exists in both the index and detail
self.assertContains(response, '<h3 id="admin_list-admin_actions">admin_actions</h3>', html=True)
self.assertContains(response, '<li><a href="#admin_list-admin_actions">admin_actions</a></li>', html=True)
def test_filters(self):
response = self.client.get(reverse('django-admindocs-filters'))
# The builtin filter group exists
self.assertContains(response, "<h2>Built-in filters</h2>", count=2, html=True)
# A builtin filter exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-add">add</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-add">add</a></li>', html=True)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
USE_I18N=False,
)
class ValidXHTMLTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_lang_name_present(self):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertNotContains(response, ' lang=""')
self.assertNotContains(response, ' xml:lang=""')
@override_settings(ROOT_URLCONF='admin_views.urls', USE_THOUSAND_SEPARATOR=True)
class DateHierarchyTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def assert_non_localized_year(self, response, year):
"""
The year is not localized with USE_THOUSAND_SEPARATOR (#15234).
"""
self.assertNotContains(response, formats.number_format(year))
def assert_contains_year_link(self, response, date):
self.assertContains(response, '?release_date__year=%d"' % date.year)
def assert_contains_month_link(self, response, date):
self.assertContains(
response, '?release_date__month=%d&release_date__year=%d"' % (
date.month, date.year))
def assert_contains_day_link(self, response, date):
self.assertContains(
response, '?release_date__day=%d&'
'release_date__month=%d&release_date__year=%d"' % (
date.day, date.month, date.year))
def test_empty(self):
"""
No date hierarchy links display with empty changelist.
"""
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
self.assertNotContains(response, 'release_date__year=')
self.assertNotContains(response, 'release_date__month=')
self.assertNotContains(response, 'release_date__day=')
def test_single(self):
"""
Single day-level date hierarchy appears for single object.
"""
DATE = datetime.date(2000, 6, 30)
Podcast.objects.create(release_date=DATE)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
self.assert_contains_day_link(response, DATE)
self.assert_non_localized_year(response, 2000)
def test_within_month(self):
"""
day-level links appear for changelist within single month.
"""
DATES = (datetime.date(2000, 6, 30),
datetime.date(2000, 6, 15),
datetime.date(2000, 6, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
for date in DATES:
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_within_year(self):
"""
month-level links appear for changelist within single year.
"""
DATES = (datetime.date(2000, 1, 30),
datetime.date(2000, 3, 15),
datetime.date(2000, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
# no day-level links
self.assertNotContains(response, 'release_date__day=')
for date in DATES:
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_multiple_years(self):
"""
year-level links appear for year-spanning changelist.
"""
DATES = (datetime.date(2001, 1, 30),
datetime.date(2003, 3, 15),
datetime.date(2005, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
# no day/month-level links
self.assertNotContains(response, 'release_date__day=')
self.assertNotContains(response, 'release_date__month=')
for date in DATES:
self.assert_contains_year_link(response, date)
# and make sure GET parameters still behave correctly
for date in DATES:
url = '%s?release_date__year=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year)
response = self.client.get(url)
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
url = '%s?release_date__year=%d&release_date__month=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year, date.month)
response = self.client.get(url)
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
def test_related_field(self):
questions_data = (
# (posted data, number of answers),
(datetime.date(2001, 1, 30), 0),
(datetime.date(2003, 3, 15), 1),
(datetime.date(2005, 5, 3), 2),
)
for date, answer_count in questions_data:
question = Question.objects.create(posted=date)
for i in range(answer_count):
question.answer_set.create()
response = self.client.get(reverse('admin:admin_views_answer_changelist'))
for date, answer_count in questions_data:
link = '?question__posted__year=%d"' % date.year
if answer_count > 0:
self.assertContains(response, link)
else:
self.assertNotContains(response, link)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomSaveRelatedTests(TestCase):
"""
One can easily customize the way related objects are saved.
Refs #16115.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_should_be_able_to_edit_related_objects_on_add_view(self):
post = {
'child_set-TOTAL_FORMS': '3',
'child_set-INITIAL_FORMS': '0',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-1-name': 'Catherine',
}
self.client.post(reverse('admin:admin_views_parent_add'), post)
self.assertEqual(1, Parent.objects.count())
self.assertEqual(2, Child.objects.count())
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_change_view(self):
parent = Parent.objects.create(name='Josh Stone')
paul = Child.objects.create(parent=parent, name='Paul')
catherine = Child.objects.create(parent=parent, name='Catherine')
post = {
'child_set-TOTAL_FORMS': '5',
'child_set-INITIAL_FORMS': '2',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-0-id': paul.id,
'child_set-1-name': 'Catherine',
'child_set-1-id': catherine.id,
}
self.client.post(reverse('admin:admin_views_parent_change', args=(parent.id,)), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_changelist_view(self):
parent = Parent.objects.create(name='Josh Rock')
Child.objects.create(parent=parent, name='Paul')
Child.objects.create(parent=parent, name='Catherine')
post = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '1',
'form-MAX_NUM_FORMS': '0',
'form-0-id': parent.id,
'form-0-name': 'Josh Stone',
'_save': 'Save'
}
self.client.post(reverse('admin:admin_views_parent_changelist'), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewLogoutTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def test_logout(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, 'registration/logged_out.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:logout'))
self.assertFalse(response.context['has_permission'])
self.assertNotContains(response, 'user-tools') # user-tools div shouldn't visible.
def test_client_logout_url_can_be_used_to_login(self):
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 302) # we should be redirected to the login page.
# follow the redirect and test results.
response = self.client.get(reverse('admin:logout'), follow=True)
self.assertContains(
response,
'<input type="hidden" name="next" value="%s">' % reverse('admin:index'),
)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:login'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminUserMessageTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def send_message(self, level):
"""
Helper that sends a post to the dummy test methods and asserts that a
message with the level has appeared in the response.
"""
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_%s' % level,
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="%s">Test %s</li>' % (level, level),
html=True)
@override_settings(MESSAGE_LEVEL=10) # Set to DEBUG for this request
def test_message_debug(self):
self.send_message('debug')
def test_message_info(self):
self.send_message('info')
def test_message_success(self):
self.send_message('success')
def test_message_warning(self):
self.send_message('warning')
def test_message_error(self):
self.send_message('error')
def test_message_extra_tags(self):
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_extra_tags',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="extra_tag info">Test tags</li>',
html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminKeepChangeListFiltersTests(TestCase):
admin_site = site
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
def setUp(self):
self.client.force_login(self.superuser)
def assertURLEqual(self, url1, url2, msg_prefix=''):
"""
Assert that two URLs are equal despite the ordering
of their querystring. Refs #22360.
"""
parsed_url1 = urlparse(url1)
path1 = parsed_url1.path
parsed_qs1 = dict(parse_qsl(parsed_url1.query))
parsed_url2 = urlparse(url2)
path2 = parsed_url2.path
parsed_qs2 = dict(parse_qsl(parsed_url2.query))
for parsed_qs in [parsed_qs1, parsed_qs2]:
if '_changelist_filters' in parsed_qs:
changelist_filters = parsed_qs['_changelist_filters']
parsed_filters = dict(parse_qsl(changelist_filters))
parsed_qs['_changelist_filters'] = parsed_filters
self.assertEqual(path1, path2)
self.assertEqual(parsed_qs1, parsed_qs2)
def test_assert_url_equal(self):
# Test equality.
change_user_url = reverse('admin:auth_user_change', args=(self.joepublicuser.pk,))
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
)
)
# Test inequality.
with self.assertRaises(AssertionError):
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D1%26is_superuser__exact%3D1'.format(
change_user_url
)
)
# Ignore scheme and host.
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url)
)
# Ignore ordering of querystring.
self.assertURLEqual(
'{}?is_staff__exact=0&is_superuser__exact=0'.format(reverse('admin:auth_user_changelist')),
'{}?is_superuser__exact=0&is_staff__exact=0'.format(reverse('admin:auth_user_changelist'))
)
# Ignore ordering of _changelist_filters.
self.assertURLEqual(
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url),
'{}?_changelist_filters=is_superuser__exact%3D0%26is_staff__exact%3D0'.format(change_user_url)
)
def get_changelist_filters(self):
return {
'is_superuser__exact': 0,
'is_staff__exact': 0,
}
def get_changelist_filters_querystring(self):
return urlencode(self.get_changelist_filters())
def get_preserved_filters_querystring(self):
return urlencode({
'_changelist_filters': self.get_changelist_filters_querystring()
})
def get_sample_user_id(self):
return self.joepublicuser.pk
def get_changelist_url(self):
return '%s?%s' % (
reverse('admin:auth_user_changelist',
current_app=self.admin_site.name),
self.get_changelist_filters_querystring(),
)
def get_add_url(self, add_preserved_filters=True):
url = reverse('admin:auth_user_add', current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_change_url(self, user_id=None, add_preserved_filters=True):
if user_id is None:
user_id = self.get_sample_user_id()
url = reverse('admin:auth_user_change', args=(user_id,), current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_history_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_history', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def get_delete_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_delete', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def test_changelist_view(self):
response = self.client.get(self.get_changelist_url())
self.assertEqual(response.status_code, 200)
# Check the `change_view` link has the correct querystring.
detail_link = re.search(
'<a href="(.*?)">{}</a>'.format(self.joepublicuser.username),
response.content.decode()
)
self.assertURLEqual(detail_link[1], self.get_change_url())
def test_change_view(self):
# Get the `change_view`.
response = self.client.get(self.get_change_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
# Check the history link.
history_link = re.search(
'<a href="(.*?)" class="historylink">History</a>',
response.content.decode()
)
self.assertURLEqual(history_link[1], self.get_history_url())
# Check the delete link.
delete_link = re.search(
'<a href="(.*?)" class="deletelink">Delete</a>',
response.content.decode()
)
self.assertURLEqual(delete_link[1], self.get_delete_url())
# Test redirect on "Save".
post_data = {
'username': 'joepublic',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
}
post_data['_save'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_changelist_url())
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['_continue'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_change_url())
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['_addanother'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_change_view_without_preserved_filters(self):
response = self.client.get(self.get_change_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_add_view(self):
# Get the `add_view`.
response = self.client.get(self.get_add_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
post_data = {
'username': 'dummy',
'password1': 'test',
'password2': 'test',
}
# Test redirect on "Save".
post_data['_save'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy').pk))
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['username'] = 'dummy2'
post_data['_continue'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy2').pk))
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['username'] = 'dummy3'
post_data['_addanother'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_add_view_without_preserved_filters(self):
response = self.client.get(self.get_add_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_delete_view(self):
# Test redirect on "Delete".
response = self.client.post(self.get_delete_url(), {'post': 'yes'})
self.assertRedirects(response, self.get_changelist_url())
def test_url_prefix(self):
context = {
'preserved_filters': self.get_preserved_filters_querystring(),
'opts': User._meta,
}
prefixes = ('', '/prefix/', '/後台/')
for prefix in prefixes:
with self.subTest(prefix=prefix), override_script_prefix(prefix):
url = reverse('admin:auth_user_changelist', current_app=self.admin_site.name)
self.assertURLEqual(
self.get_changelist_url(),
add_preserved_filters(context, url),
)
class NamespacedAdminKeepChangeListFiltersTests(AdminKeepChangeListFiltersTests):
admin_site = site2
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestLabelVisibility(TestCase):
""" #11277 -Labels of hidden fields in admin were not hidden. """
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_all_fields_visible(self):
response = self.client.get(reverse('admin:admin_views_emptymodelvisible_add'))
self.assert_fieldline_visible(response)
self.assert_field_visible(response, 'first')
self.assert_field_visible(response, 'second')
def test_all_fields_hidden(self):
response = self.client.get(reverse('admin:admin_views_emptymodelhidden_add'))
self.assert_fieldline_hidden(response)
self.assert_field_hidden(response, 'first')
self.assert_field_hidden(response, 'second')
def test_mixin(self):
response = self.client.get(reverse('admin:admin_views_emptymodelmixin_add'))
self.assert_fieldline_visible(response)
self.assert_field_hidden(response, 'first')
self.assert_field_visible(response, 'second')
def assert_field_visible(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s">' % field_name)
def assert_field_hidden(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s hidden">' % field_name)
def assert_fieldline_visible(self, response):
self.assertContains(response, '<div class="form-row field-first field-second">')
def assert_fieldline_hidden(self, response):
self.assertContains(response, '<div class="form-row hidden')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewOnSiteTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_add_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data.
Also, assertFormError() and assertFormsetError() is usable for admin
forms and formsets.
"""
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test1',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': '',
'dependentchild_set-0-family_name': 'Test2',
}
response = self.client.post(reverse('admin:admin_views_parentwithdependentchildren_add'), post_data)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
msg = "The form 'adminform' in context 0 does not contain the non-field error 'Error'"
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'adminform', None, ['Error'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
msg = "The formset 'inline_admin_formset' in context 22 does not contain any non-form errors."
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'inline_admin_formset', None, None, ['Error'])
def test_change_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data
"""
pwdc = ParentWithDependentChildren.objects.create(some_required_info=6, family_name='Test1')
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test2',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': str(pwdc.id),
'dependentchild_set-0-family_name': 'Test1',
}
response = self.client.post(
reverse('admin:admin_views_parentwithdependentchildren_change', args=(pwdc.id,)), post_data
)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
def test_check(self):
"The view_on_site value is either a boolean or a callable"
try:
admin = CityAdmin(City, AdminSite())
CityAdmin.view_on_site = True
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = False
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = lambda obj: obj.get_absolute_url()
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = []
self.assertEqual(admin.check(), [
Error(
"The value of 'view_on_site' must be a callable or a boolean value.",
obj=CityAdmin,
id='admin.E025',
),
])
finally:
# Restore the original values for the benefit of other tests.
CityAdmin.view_on_site = True
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, 1)))
def test_true(self):
"The default behavior is followed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_worker_change', args=(self.w1.pk,)))
self.assertContains(response, '"/worker/%s/%s/"' % (self.w1.surname, self.w1.name))
def test_missing_get_absolute_url(self):
"None is returned if model doesn't have get_absolute_url"
model_admin = ModelAdmin(Worker, None)
self.assertIsNone(model_admin.get_view_on_site_url(Worker()))
@override_settings(ROOT_URLCONF='admin_views.urls')
class InlineAdminViewOnSiteTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_state_change', args=(self.s1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_true(self):
"The 'View on site' button is displayed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.r1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
self.assertContains(response, '"/worker_inline/%s/%s/"' % (self.w1.surname, self.w1.name))
@override_settings(ROOT_URLCONF='admin_views.urls')
class GetFormsetsWithInlinesArgumentTest(TestCase):
"""
#23934 - When adding a new model instance in the admin, the 'obj' argument
of get_formsets_with_inlines() should be None. When changing, it should be
equal to the existing model instance.
The GetFormsetsArgumentCheckingAdmin ModelAdmin throws an exception
if obj is not None during add_view or obj is None during change_view.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_explicitly_provided_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
def test_implicitly_generated_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSiteFinalCatchAllPatternTests(TestCase):
"""
Verifies the behaviour of the admin catch-all view.
* Anonynous/non-staff users are redirected to login for all URLs, whether
otherwise valid or not.
* APPEND_SLASH is applied for staff if needed.
* Otherwise Http404.
* Catch-all view disabled via AdminSite.final_catch_all_view.
"""
def test_unknown_url_redirects_login_if_not_authenticated(self):
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), unknown_url))
def test_unknown_url_404_if_authenticated(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_known_url_missing_slash_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')[:-1]
response = self.client.get(known_url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_non_admin_url_shares_url_prefix(self):
url = reverse('non_admin')[:-1]
response = self.client.get(url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')[:-1]
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1], SCRIPT_NAME='/prefix/')
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True, FORCE_SCRIPT_NAME='/prefix/')
def test_missing_slash_append_slash_true_force_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_non_staff_user(self):
user = User.objects.create_user(
username='user',
password='secret',
email='[email protected]',
is_staff=False,
)
self.client.force_login(user)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, '/test_admin/admin/login/?next=/test_admin/admin/admin_views/article')
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_single_model_no_append_slash(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin9:admin_views_actor_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Same tests above with final_catch_all_view=False.
def test_unknown_url_404_if_not_authenticated_without_final_catch_all_view(self):
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_unknown_url_404_if_authenticated_without_final_catch_all_view(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), known_url))
def test_known_url_missing_slash_redirects_with_slash_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, fetch_redirect_response=False)
def test_non_admin_url_shares_url_prefix_without_final_catch_all_view(self):
url = reverse('non_admin10')
response = self.client.get(url[:-1])
self.assertRedirects(response, url, status_code=301)
def test_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')[:-1]
response = self.client.get(url)
# Matches test_admin/admin10/admin_views/article/<path:object_id>/
self.assertRedirects(response, url + '/', status_code=301, fetch_redirect_response=False)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Outside admin.
def test_non_admin_url_404_if_not_authenticated(self):
unknown_url = '/unknown/'
response = self.client.get(unknown_url)
# Does not redirect to the admin login.
self.assertEqual(response.status_code, 404)
|
75c69ad33a75ce3df1b36a74a3219c9b504f1cd924280eef00d7f89dadcac5f0 | from functools import update_wrapper, wraps
from unittest import TestCase
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.auth.decorators import (
login_required, permission_required, user_passes_test,
)
from django.http import HttpRequest, HttpResponse, HttpResponseNotAllowed
from django.middleware.clickjacking import XFrameOptionsMiddleware
from django.test import SimpleTestCase
from django.utils.decorators import method_decorator
from django.utils.functional import keep_lazy, keep_lazy_text, lazy
from django.utils.safestring import mark_safe
from django.views.decorators.cache import (
cache_control, cache_page, never_cache,
)
from django.views.decorators.clickjacking import (
xframe_options_deny, xframe_options_exempt, xframe_options_sameorigin,
)
from django.views.decorators.http import (
condition, require_GET, require_http_methods, require_POST, require_safe,
)
from django.views.decorators.vary import vary_on_cookie, vary_on_headers
def fully_decorated(request):
"""Expected __doc__"""
return HttpResponse('<html><body>dummy</body></html>')
fully_decorated.anything = "Expected __dict__"
def compose(*functions):
# compose(f, g)(*args, **kwargs) == f(g(*args, **kwargs))
functions = list(reversed(functions))
def _inner(*args, **kwargs):
result = functions[0](*args, **kwargs)
for f in functions[1:]:
result = f(result)
return result
return _inner
full_decorator = compose(
# django.views.decorators.http
require_http_methods(["GET"]),
require_GET,
require_POST,
require_safe,
condition(lambda r: None, lambda r: None),
# django.views.decorators.vary
vary_on_headers('Accept-language'),
vary_on_cookie,
# django.views.decorators.cache
cache_page(60 * 15),
cache_control(private=True),
never_cache,
# django.contrib.auth.decorators
# Apply user_passes_test twice to check #9474
user_passes_test(lambda u: True),
login_required,
permission_required('change_world'),
# django.contrib.admin.views.decorators
staff_member_required,
# django.utils.functional
keep_lazy(HttpResponse),
keep_lazy_text,
lazy,
# django.utils.safestring
mark_safe,
)
fully_decorated = full_decorator(fully_decorated)
class DecoratorsTest(TestCase):
def test_attributes(self):
"""
Built-in decorators set certain attributes of the wrapped function.
"""
self.assertEqual(fully_decorated.__name__, 'fully_decorated')
self.assertEqual(fully_decorated.__doc__, 'Expected __doc__')
self.assertEqual(fully_decorated.__dict__['anything'], 'Expected __dict__')
def test_user_passes_test_composition(self):
"""
The user_passes_test decorator can be applied multiple times (#9474).
"""
def test1(user):
user.decorators_applied.append('test1')
return True
def test2(user):
user.decorators_applied.append('test2')
return True
def callback(request):
return request.user.decorators_applied
callback = user_passes_test(test1)(callback)
callback = user_passes_test(test2)(callback)
class DummyUser:
pass
class DummyRequest:
pass
request = DummyRequest()
request.user = DummyUser()
request.user.decorators_applied = []
response = callback(request)
self.assertEqual(response, ['test2', 'test1'])
def test_cache_page(self):
def my_view(request):
return "response"
my_view_cached = cache_page(123)(my_view)
self.assertEqual(my_view_cached(HttpRequest()), "response")
my_view_cached2 = cache_page(123, key_prefix="test")(my_view)
self.assertEqual(my_view_cached2(HttpRequest()), "response")
def test_require_safe_accepts_only_safe_methods(self):
"""
Test for the require_safe decorator.
A view returns either a response or an exception.
Refs #15637.
"""
def my_view(request):
return HttpResponse("OK")
my_safe_view = require_safe(my_view)
request = HttpRequest()
request.method = 'GET'
self.assertIsInstance(my_safe_view(request), HttpResponse)
request.method = 'HEAD'
self.assertIsInstance(my_safe_view(request), HttpResponse)
request.method = 'POST'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
request.method = 'PUT'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
request.method = 'DELETE'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
# For testing method_decorator, a decorator that assumes a single argument.
# We will get type arguments if there is a mismatch in the number of arguments.
def simple_dec(func):
def wrapper(arg):
return func("test:" + arg)
return wraps(func)(wrapper)
simple_dec_m = method_decorator(simple_dec)
# For testing method_decorator, two decorators that add an attribute to the function
def myattr_dec(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs)
wrapper.myattr = True
return wrapper
myattr_dec_m = method_decorator(myattr_dec)
def myattr2_dec(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs)
wrapper.myattr2 = True
return wrapper
myattr2_dec_m = method_decorator(myattr2_dec)
class ClsDec:
def __init__(self, myattr):
self.myattr = myattr
def __call__(self, f):
def wrapped():
return f() and self.myattr
return update_wrapper(wrapped, f)
class MethodDecoratorTests(SimpleTestCase):
"""
Tests for method_decorator
"""
def test_preserve_signature(self):
class Test:
@simple_dec_m
def say(self, arg):
return arg
self.assertEqual("test:hello", Test().say("hello"))
def test_preserve_attributes(self):
# Sanity check myattr_dec and myattr2_dec
@myattr_dec
def func():
pass
self.assertIs(getattr(func, 'myattr', False), True)
@myattr2_dec
def func():
pass
self.assertIs(getattr(func, 'myattr2', False), True)
@myattr_dec
@myattr2_dec
def func():
pass
self.assertIs(getattr(func, 'myattr', False), True)
self.assertIs(getattr(func, 'myattr2', False), False)
# Decorate using method_decorator() on the method.
class TestPlain:
@myattr_dec_m
@myattr2_dec_m
def method(self):
"A method"
pass
# Decorate using method_decorator() on both the class and the method.
# The decorators applied to the methods are applied before the ones
# applied to the class.
@method_decorator(myattr_dec_m, "method")
class TestMethodAndClass:
@method_decorator(myattr2_dec_m)
def method(self):
"A method"
pass
# Decorate using an iterable of function decorators.
@method_decorator((myattr_dec, myattr2_dec), 'method')
class TestFunctionIterable:
def method(self):
"A method"
pass
# Decorate using an iterable of method decorators.
decorators = (myattr_dec_m, myattr2_dec_m)
@method_decorator(decorators, "method")
class TestMethodIterable:
def method(self):
"A method"
pass
tests = (TestPlain, TestMethodAndClass, TestFunctionIterable, TestMethodIterable)
for Test in tests:
with self.subTest(Test=Test):
self.assertIs(getattr(Test().method, 'myattr', False), True)
self.assertIs(getattr(Test().method, 'myattr2', False), True)
self.assertIs(getattr(Test.method, 'myattr', False), True)
self.assertIs(getattr(Test.method, 'myattr2', False), True)
self.assertEqual(Test.method.__doc__, 'A method')
self.assertEqual(Test.method.__name__, 'method')
def test_new_attribute(self):
"""A decorator that sets a new attribute on the method."""
def decorate(func):
func.x = 1
return func
class MyClass:
@method_decorator(decorate)
def method(self):
return True
obj = MyClass()
self.assertEqual(obj.method.x, 1)
self.assertIs(obj.method(), True)
def test_bad_iterable(self):
decorators = {myattr_dec_m, myattr2_dec_m}
msg = "'set' object is not subscriptable"
with self.assertRaisesMessage(TypeError, msg):
@method_decorator(decorators, "method")
class TestIterable:
def method(self):
"A method"
pass
# Test for argumented decorator
def test_argumented(self):
class Test:
@method_decorator(ClsDec(False))
def method(self):
return True
self.assertIs(Test().method(), False)
def test_descriptors(self):
def original_dec(wrapped):
def _wrapped(arg):
return wrapped(arg)
return _wrapped
method_dec = method_decorator(original_dec)
class bound_wrapper:
def __init__(self, wrapped):
self.wrapped = wrapped
self.__name__ = wrapped.__name__
def __call__(self, arg):
return self.wrapped(arg)
def __get__(self, instance, cls=None):
return self
class descriptor_wrapper:
def __init__(self, wrapped):
self.wrapped = wrapped
self.__name__ = wrapped.__name__
def __get__(self, instance, cls=None):
return bound_wrapper(self.wrapped.__get__(instance, cls))
class Test:
@method_dec
@descriptor_wrapper
def method(self, arg):
return arg
self.assertEqual(Test().method(1), 1)
def test_class_decoration(self):
"""
@method_decorator can be used to decorate a class and its methods.
"""
def deco(func):
def _wrapper(*args, **kwargs):
return True
return _wrapper
@method_decorator(deco, name="method")
class Test:
def method(self):
return False
self.assertTrue(Test().method())
def test_tuple_of_decorators(self):
"""
@method_decorator can accept a tuple of decorators.
"""
def add_question_mark(func):
def _wrapper(*args, **kwargs):
return func(*args, **kwargs) + "?"
return _wrapper
def add_exclamation_mark(func):
def _wrapper(*args, **kwargs):
return func(*args, **kwargs) + "!"
return _wrapper
# The order should be consistent with the usual order in which
# decorators are applied, e.g.
# @add_exclamation_mark
# @add_question_mark
# def func():
# ...
decorators = (add_exclamation_mark, add_question_mark)
@method_decorator(decorators, name="method")
class TestFirst:
def method(self):
return "hello world"
class TestSecond:
@method_decorator(decorators)
def method(self):
return "hello world"
self.assertEqual(TestFirst().method(), "hello world?!")
self.assertEqual(TestSecond().method(), "hello world?!")
def test_invalid_non_callable_attribute_decoration(self):
"""
@method_decorator on a non-callable attribute raises an error.
"""
msg = (
"Cannot decorate 'prop' as it isn't a callable attribute of "
"<class 'Test'> (1)"
)
with self.assertRaisesMessage(TypeError, msg):
@method_decorator(lambda: None, name="prop")
class Test:
prop = 1
@classmethod
def __module__(cls):
return "tests"
def test_invalid_method_name_to_decorate(self):
"""
@method_decorator on a nonexistent method raises an error.
"""
msg = (
"The keyword argument `name` must be the name of a method of the "
"decorated class: <class 'Test'>. Got 'nonexistent_method' instead"
)
with self.assertRaisesMessage(ValueError, msg):
@method_decorator(lambda: None, name='nonexistent_method')
class Test:
@classmethod
def __module__(cls):
return "tests"
def test_wrapper_assignments(self):
"""@method_decorator preserves wrapper assignments."""
func_name = None
func_module = None
def decorator(func):
@wraps(func)
def inner(*args, **kwargs):
nonlocal func_name, func_module
func_name = getattr(func, '__name__', None)
func_module = getattr(func, '__module__', None)
return func(*args, **kwargs)
return inner
class Test:
@method_decorator(decorator)
def method(self):
return 'tests'
Test().method()
self.assertEqual(func_name, 'method')
self.assertIsNotNone(func_module)
class XFrameOptionsDecoratorsTests(TestCase):
"""
Tests for the X-Frame-Options decorators.
"""
def test_deny_decorator(self):
"""
Ensures @xframe_options_deny properly sets the X-Frame-Options header.
"""
@xframe_options_deny
def a_view(request):
return HttpResponse()
r = a_view(HttpRequest())
self.assertEqual(r.headers['X-Frame-Options'], 'DENY')
def test_sameorigin_decorator(self):
"""
Ensures @xframe_options_sameorigin properly sets the X-Frame-Options
header.
"""
@xframe_options_sameorigin
def a_view(request):
return HttpResponse()
r = a_view(HttpRequest())
self.assertEqual(r.headers['X-Frame-Options'], 'SAMEORIGIN')
def test_exempt_decorator(self):
"""
Ensures @xframe_options_exempt properly instructs the
XFrameOptionsMiddleware to NOT set the header.
"""
@xframe_options_exempt
def a_view(request):
return HttpResponse()
req = HttpRequest()
resp = a_view(req)
self.assertIsNone(resp.get('X-Frame-Options', None))
self.assertTrue(resp.xframe_options_exempt)
# Since the real purpose of the exempt decorator is to suppress
# the middleware's functionality, let's make sure it actually works...
r = XFrameOptionsMiddleware(a_view)(req)
self.assertIsNone(r.get('X-Frame-Options', None))
class NeverCacheDecoratorTest(SimpleTestCase):
def test_never_cache_decorator(self):
@never_cache
def a_view(request):
return HttpResponse()
r = a_view(HttpRequest())
self.assertEqual(
set(r.headers['Cache-Control'].split(', ')),
{'max-age=0', 'no-cache', 'no-store', 'must-revalidate', 'private'},
)
def test_never_cache_decorator_http_request(self):
class MyClass:
@never_cache
def a_view(self, request):
return HttpResponse()
msg = (
"never_cache didn't receive an HttpRequest. If you are decorating "
"a classmethod, be sure to use @method_decorator."
)
with self.assertRaisesMessage(TypeError, msg):
MyClass().a_view(HttpRequest())
class CacheControlDecoratorTest(SimpleTestCase):
def test_cache_control_decorator_http_request(self):
class MyClass:
@cache_control(a='b')
def a_view(self, request):
return HttpResponse()
msg = (
"cache_control didn't receive an HttpRequest. If you are "
"decorating a classmethod, be sure to use @method_decorator."
)
with self.assertRaisesMessage(TypeError, msg):
MyClass().a_view(HttpRequest())
|
dd970784b20088e32f74ffe093d35117745de6a8e5e884e0a434ea05cd9ec5c1 | import datetime
import pickle
import unittest
import uuid
from collections import namedtuple
from copy import deepcopy
from decimal import Decimal
from unittest import mock
from django.core.exceptions import FieldError
from django.db import DatabaseError, NotSupportedError, connection
from django.db.models import (
AutoField, Avg, BinaryField, BooleanField, Case, CharField, Count,
DateField, DateTimeField, DecimalField, DurationField, Exists, Expression,
ExpressionList, ExpressionWrapper, F, FloatField, Func, IntegerField, Max,
Min, Model, OrderBy, OuterRef, Q, StdDev, Subquery, Sum, TimeField,
UUIDField, Value, Variance, When,
)
from django.db.models.expressions import (
Col, Combinable, CombinedExpression, RawSQL, Ref,
)
from django.db.models.functions import (
Coalesce, Concat, Left, Length, Lower, Substr, Upper,
)
from django.db.models.sql import constants
from django.db.models.sql.datastructures import Join
from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
from django.test.utils import (
Approximate, CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.utils.functional import SimpleLazyObject
from .models import (
UUID, UUIDPK, Company, Employee, Experiment, Manager, Number,
RemoteEmployee, Result, SimulationRun, Time,
)
class BasicExpressionsTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.example_inc = Company.objects.create(
name="Example Inc.", num_employees=2300, num_chairs=5,
ceo=Employee.objects.create(firstname="Joe", lastname="Smith", salary=10)
)
cls.foobar_ltd = Company.objects.create(
name="Foobar Ltd.", num_employees=3, num_chairs=4, based_in_eu=True,
ceo=Employee.objects.create(firstname="Frank", lastname="Meyer", salary=20)
)
cls.max = Employee.objects.create(firstname='Max', lastname='Mustermann', salary=30)
cls.gmbh = Company.objects.create(name='Test GmbH', num_employees=32, num_chairs=1, ceo=cls.max)
def setUp(self):
self.company_query = Company.objects.values(
"name", "num_employees", "num_chairs"
).order_by(
"name", "num_employees", "num_chairs"
)
def test_annotate_values_aggregate(self):
companies = Company.objects.annotate(
salaries=F('ceo__salary'),
).values('num_employees', 'salaries').aggregate(
result=Sum(
F('salaries') + F('num_employees'),
output_field=IntegerField()
),
)
self.assertEqual(companies['result'], 2395)
def test_annotate_values_filter(self):
companies = Company.objects.annotate(
foo=RawSQL('%s', ['value']),
).filter(foo='value').order_by('name')
self.assertSequenceEqual(
companies,
[self.example_inc, self.foobar_ltd, self.gmbh],
)
def test_annotate_values_count(self):
companies = Company.objects.annotate(foo=RawSQL('%s', ['value']))
self.assertEqual(companies.count(), 3)
@skipUnlessDBFeature('supports_boolean_expr_in_select_clause')
def test_filtering_on_annotate_that_uses_q(self):
self.assertEqual(
Company.objects.annotate(
num_employees_check=ExpressionWrapper(Q(num_employees__gt=3), output_field=BooleanField())
).filter(num_employees_check=True).count(),
2,
)
def test_filtering_on_q_that_is_boolean(self):
self.assertEqual(
Company.objects.filter(
ExpressionWrapper(Q(num_employees__gt=3), output_field=BooleanField())
).count(),
2,
)
def test_filtering_on_rawsql_that_is_boolean(self):
self.assertEqual(
Company.objects.filter(
RawSQL('num_employees > %s', (3,), output_field=BooleanField()),
).count(),
2,
)
def test_filter_inter_attribute(self):
# We can filter on attribute relationships on same model obj, e.g.
# find companies where the number of employees is greater
# than the number of chairs.
self.assertSequenceEqual(
self.company_query.filter(num_employees__gt=F("num_chairs")), [
{
"num_chairs": 5,
"name": "Example Inc.",
"num_employees": 2300,
},
{
"num_chairs": 1,
"name": "Test GmbH",
"num_employees": 32
},
],
)
def test_update(self):
# We can set one field to have the value of another field
# Make sure we have enough chairs
self.company_query.update(num_chairs=F("num_employees"))
self.assertSequenceEqual(
self.company_query, [
{
"num_chairs": 2300,
"name": "Example Inc.",
"num_employees": 2300
},
{
"num_chairs": 3,
"name": "Foobar Ltd.",
"num_employees": 3
},
{
"num_chairs": 32,
"name": "Test GmbH",
"num_employees": 32
}
],
)
def test_arithmetic(self):
# We can perform arithmetic operations in expressions
# Make sure we have 2 spare chairs
self.company_query.update(num_chairs=F("num_employees") + 2)
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 2302,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 5,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 34,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_order_of_operations(self):
# Law of order of operations is followed
self.company_query.update(num_chairs=F('num_employees') + 2 * F('num_employees'))
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 6900,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 9,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 96,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_parenthesis_priority(self):
# Law of order of operations can be overridden by parentheses
self.company_query.update(num_chairs=(F('num_employees') + 2) * F('num_employees'))
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 5294600,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 15,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 1088,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_update_with_fk(self):
# ForeignKey can become updated with the value of another ForeignKey.
self.assertEqual(Company.objects.update(point_of_contact=F('ceo')), 3)
self.assertQuerysetEqual(
Company.objects.all(),
['Joe Smith', 'Frank Meyer', 'Max Mustermann'],
lambda c: str(c.point_of_contact),
ordered=False
)
def test_update_with_none(self):
Number.objects.create(integer=1, float=1.0)
Number.objects.create(integer=2)
Number.objects.filter(float__isnull=False).update(float=Value(None))
self.assertQuerysetEqual(
Number.objects.all(),
[None, None],
lambda n: n.float,
ordered=False
)
def test_filter_with_join(self):
# F Expressions can also span joins
Company.objects.update(point_of_contact=F('ceo'))
c = Company.objects.first()
c.point_of_contact = Employee.objects.create(firstname="Guido", lastname="van Rossum")
c.save()
self.assertQuerysetEqual(
Company.objects.filter(ceo__firstname=F('point_of_contact__firstname')),
['Foobar Ltd.', 'Test GmbH'],
lambda c: c.name,
ordered=False
)
Company.objects.exclude(
ceo__firstname=F("point_of_contact__firstname")
).update(name="foo")
self.assertEqual(
Company.objects.exclude(
ceo__firstname=F('point_of_contact__firstname')
).get().name,
"foo",
)
msg = "Joined field references are not permitted in this query"
with self.assertRaisesMessage(FieldError, msg):
Company.objects.exclude(
ceo__firstname=F('point_of_contact__firstname')
).update(name=F('point_of_contact__lastname'))
def test_object_update(self):
# F expressions can be used to update attributes on single objects
self.gmbh.num_employees = F('num_employees') + 4
self.gmbh.save()
self.gmbh.refresh_from_db()
self.assertEqual(self.gmbh.num_employees, 36)
def test_new_object_save(self):
# We should be able to use Funcs when inserting new data
test_co = Company(name=Lower(Value('UPPER')), num_employees=32, num_chairs=1, ceo=self.max)
test_co.save()
test_co.refresh_from_db()
self.assertEqual(test_co.name, "upper")
def test_new_object_create(self):
test_co = Company.objects.create(name=Lower(Value('UPPER')), num_employees=32, num_chairs=1, ceo=self.max)
test_co.refresh_from_db()
self.assertEqual(test_co.name, "upper")
def test_object_create_with_aggregate(self):
# Aggregates are not allowed when inserting new data
msg = 'Aggregate functions are not allowed in this query (num_employees=Max(Value(1))).'
with self.assertRaisesMessage(FieldError, msg):
Company.objects.create(
name='Company', num_employees=Max(Value(1)), num_chairs=1,
ceo=Employee.objects.create(firstname="Just", lastname="Doit", salary=30),
)
def test_object_update_fk(self):
# F expressions cannot be used to update attributes which are foreign
# keys, or attributes which involve joins.
test_gmbh = Company.objects.get(pk=self.gmbh.pk)
msg = 'F(ceo)": "Company.point_of_contact" must be a "Employee" instance.'
with self.assertRaisesMessage(ValueError, msg):
test_gmbh.point_of_contact = F('ceo')
test_gmbh.point_of_contact = self.gmbh.ceo
test_gmbh.save()
test_gmbh.name = F('ceo__lastname')
msg = 'Joined field references are not permitted in this query'
with self.assertRaisesMessage(FieldError, msg):
test_gmbh.save()
def test_update_inherited_field_value(self):
msg = 'Joined field references are not permitted in this query'
with self.assertRaisesMessage(FieldError, msg):
RemoteEmployee.objects.update(adjusted_salary=F('salary') * 5)
def test_object_update_unsaved_objects(self):
# F expressions cannot be used to update attributes on objects which do
# not yet exist in the database
acme = Company(name='The Acme Widget Co.', num_employees=12, num_chairs=5, ceo=self.max)
acme.num_employees = F("num_employees") + 16
msg = (
'Failed to insert expression "Col(expressions_company, '
'expressions.Company.num_employees) + Value(16)" on '
'expressions.Company.num_employees. F() expressions can only be '
'used to update, not to insert.'
)
with self.assertRaisesMessage(ValueError, msg):
acme.save()
acme.num_employees = 12
acme.name = Lower(F('name'))
msg = (
'Failed to insert expression "Lower(Col(expressions_company, '
'expressions.Company.name))" on expressions.Company.name. F() '
'expressions can only be used to update, not to insert.'
)
with self.assertRaisesMessage(ValueError, msg):
acme.save()
def test_ticket_11722_iexact_lookup(self):
Employee.objects.create(firstname="John", lastname="Doe")
test = Employee.objects.create(firstname="Test", lastname="test")
queryset = Employee.objects.filter(firstname__iexact=F('lastname'))
self.assertSequenceEqual(queryset, [test])
def test_ticket_16731_startswith_lookup(self):
Employee.objects.create(firstname="John", lastname="Doe")
e2 = Employee.objects.create(firstname="Jack", lastname="Jackson")
e3 = Employee.objects.create(firstname="Jack", lastname="jackson")
self.assertSequenceEqual(
Employee.objects.filter(lastname__startswith=F('firstname')),
[e2, e3] if connection.features.has_case_insensitive_like else [e2]
)
qs = Employee.objects.filter(lastname__istartswith=F('firstname')).order_by('pk')
self.assertSequenceEqual(qs, [e2, e3])
def test_ticket_18375_join_reuse(self):
# Reverse multijoin F() references and the lookup target the same join.
# Pre #18375 the F() join was generated first and the lookup couldn't
# reuse that join.
qs = Employee.objects.filter(company_ceo_set__num_chairs=F('company_ceo_set__num_employees'))
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_kwarg_ordering(self):
# The next query was dict-randomization dependent - if the "gte=1"
# was seen first, then the F() will reuse the join generated by the
# gte lookup, if F() was seen first, then it generated a join the
# other lookups could not reuse.
qs = Employee.objects.filter(
company_ceo_set__num_chairs=F('company_ceo_set__num_employees'),
company_ceo_set__num_chairs__gte=1,
)
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_kwarg_ordering_2(self):
# Another similar case for F() than above. Now we have the same join
# in two filter kwargs, one in the lhs lookup, one in F. Here pre
# #18375 the amount of joins generated was random if dict
# randomization was enabled, that is the generated query dependent
# on which clause was seen first.
qs = Employee.objects.filter(
company_ceo_set__num_employees=F('pk'),
pk=F('company_ceo_set__num_employees')
)
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_chained_filters(self):
# F() expressions do not reuse joins from previous filter.
qs = Employee.objects.filter(
company_ceo_set__num_employees=F('pk')
).filter(
company_ceo_set__num_employees=F('company_ceo_set__num_employees')
)
self.assertEqual(str(qs.query).count('JOIN'), 2)
def test_order_by_exists(self):
mary = Employee.objects.create(firstname='Mary', lastname='Mustermann', salary=20)
mustermanns_by_seniority = Employee.objects.filter(lastname='Mustermann').order_by(
# Order by whether the employee is the CEO of a company
Exists(Company.objects.filter(ceo=OuterRef('pk'))).desc()
)
self.assertSequenceEqual(mustermanns_by_seniority, [self.max, mary])
def test_order_by_multiline_sql(self):
raw_order_by = (
RawSQL('''
CASE WHEN num_employees > 1000
THEN num_chairs
ELSE 0 END
''', []).desc(),
RawSQL('''
CASE WHEN num_chairs > 1
THEN 1
ELSE 0 END
''', []).asc()
)
for qs in (
Company.objects.all(),
Company.objects.distinct(),
):
with self.subTest(qs=qs):
self.assertSequenceEqual(
qs.order_by(*raw_order_by),
[self.example_inc, self.gmbh, self.foobar_ltd],
)
def test_outerref(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
msg = (
'This queryset contains a reference to an outer query and may only '
'be used in a subquery.'
)
with self.assertRaisesMessage(ValueError, msg):
inner.exists()
outer = Employee.objects.annotate(is_point_of_contact=Exists(inner))
self.assertIs(outer.exists(), True)
def test_exist_single_field_output_field(self):
queryset = Company.objects.values('pk')
self.assertIsInstance(Exists(queryset).output_field, BooleanField)
def test_subquery(self):
Company.objects.filter(name='Example Inc.').update(
point_of_contact=Employee.objects.get(firstname='Joe', lastname='Smith'),
ceo=self.max,
)
Employee.objects.create(firstname='Bob', lastname='Brown', salary=40)
qs = Employee.objects.annotate(
is_point_of_contact=Exists(Company.objects.filter(point_of_contact=OuterRef('pk'))),
is_not_point_of_contact=~Exists(Company.objects.filter(point_of_contact=OuterRef('pk'))),
is_ceo_of_small_company=Exists(Company.objects.filter(num_employees__lt=200, ceo=OuterRef('pk'))),
is_ceo_small_2=~~Exists(Company.objects.filter(num_employees__lt=200, ceo=OuterRef('pk'))),
largest_company=Subquery(Company.objects.order_by('-num_employees').filter(
Q(ceo=OuterRef('pk')) | Q(point_of_contact=OuterRef('pk'))
).values('name')[:1], output_field=CharField())
).values(
'firstname',
'is_point_of_contact',
'is_not_point_of_contact',
'is_ceo_of_small_company',
'is_ceo_small_2',
'largest_company',
).order_by('firstname')
results = list(qs)
# Could use Coalesce(subq, Value('')) instead except for the bug in
# cx_Oracle mentioned in #23843.
bob = results[0]
if bob['largest_company'] == '' and connection.features.interprets_empty_strings_as_nulls:
bob['largest_company'] = None
self.assertEqual(results, [
{
'firstname': 'Bob',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': False,
'is_ceo_small_2': False,
'largest_company': None,
},
{
'firstname': 'Frank',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': True,
'is_ceo_small_2': True,
'largest_company': 'Foobar Ltd.',
},
{
'firstname': 'Joe',
'is_point_of_contact': True,
'is_not_point_of_contact': False,
'is_ceo_of_small_company': False,
'is_ceo_small_2': False,
'largest_company': 'Example Inc.',
},
{
'firstname': 'Max',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': True,
'is_ceo_small_2': True,
'largest_company': 'Example Inc.'
}
])
# A less elegant way to write the same query: this uses a LEFT OUTER
# JOIN and an IS NULL, inside a WHERE NOT IN which is probably less
# efficient than EXISTS.
self.assertCountEqual(
qs.filter(is_point_of_contact=True).values('pk'),
Employee.objects.exclude(company_point_of_contact_set=None).values('pk')
)
def test_subquery_eq(self):
qs = Employee.objects.annotate(
is_ceo=Exists(Company.objects.filter(ceo=OuterRef('pk'))),
is_point_of_contact=Exists(
Company.objects.filter(point_of_contact=OuterRef('pk')),
),
small_company=Exists(
queryset=Company.objects.filter(num_employees__lt=200),
),
).filter(is_ceo=True, is_point_of_contact=False, small_company=True)
self.assertNotEqual(
qs.query.annotations['is_ceo'],
qs.query.annotations['is_point_of_contact'],
)
self.assertNotEqual(
qs.query.annotations['is_ceo'],
qs.query.annotations['small_company'],
)
def test_in_subquery(self):
# This is a contrived test (and you really wouldn't write this query),
# but it is a succinct way to test the __in=Subquery() construct.
small_companies = Company.objects.filter(num_employees__lt=200).values('pk')
subquery_test = Company.objects.filter(pk__in=Subquery(small_companies))
self.assertCountEqual(subquery_test, [self.foobar_ltd, self.gmbh])
subquery_test2 = Company.objects.filter(pk=Subquery(small_companies.filter(num_employees=3)))
self.assertCountEqual(subquery_test2, [self.foobar_ltd])
def test_uuid_pk_subquery(self):
u = UUIDPK.objects.create()
UUID.objects.create(uuid_fk=u)
qs = UUIDPK.objects.filter(id__in=Subquery(UUID.objects.values('uuid_fk__id')))
self.assertCountEqual(qs, [u])
def test_nested_subquery(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
outer = Employee.objects.annotate(is_point_of_contact=Exists(inner))
contrived = Employee.objects.annotate(
is_point_of_contact=Subquery(
outer.filter(pk=OuterRef('pk')).values('is_point_of_contact'),
output_field=BooleanField(),
),
)
self.assertCountEqual(contrived.values_list(), outer.values_list())
def test_nested_subquery_join_outer_ref(self):
inner = Employee.objects.filter(pk=OuterRef('ceo__pk')).values('pk')
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
ceo__in=inner,
ceo__pk=OuterRef('pk'),
).values('pk'),
),
)
self.assertSequenceEqual(
qs.values_list('ceo_company', flat=True),
[self.example_inc.pk, self.foobar_ltd.pk, self.gmbh.pk],
)
def test_nested_subquery_outer_ref_2(self):
first = Time.objects.create(time='09:00')
second = Time.objects.create(time='17:00')
third = Time.objects.create(time='21:00')
SimulationRun.objects.bulk_create([
SimulationRun(start=first, end=second, midpoint='12:00'),
SimulationRun(start=first, end=third, midpoint='15:00'),
SimulationRun(start=second, end=first, midpoint='00:00'),
])
inner = Time.objects.filter(time=OuterRef(OuterRef('time')), pk=OuterRef('start')).values('time')
middle = SimulationRun.objects.annotate(other=Subquery(inner)).values('other')[:1]
outer = Time.objects.annotate(other=Subquery(middle, output_field=TimeField()))
# This is a contrived example. It exercises the double OuterRef form.
self.assertCountEqual(outer, [first, second, third])
def test_nested_subquery_outer_ref_with_autofield(self):
first = Time.objects.create(time='09:00')
second = Time.objects.create(time='17:00')
SimulationRun.objects.create(start=first, end=second, midpoint='12:00')
inner = SimulationRun.objects.filter(start=OuterRef(OuterRef('pk'))).values('start')
middle = Time.objects.annotate(other=Subquery(inner)).values('other')[:1]
outer = Time.objects.annotate(other=Subquery(middle, output_field=IntegerField()))
# This exercises the double OuterRef form with AutoField as pk.
self.assertCountEqual(outer, [first, second])
def test_annotations_within_subquery(self):
Company.objects.filter(num_employees__lt=50).update(ceo=Employee.objects.get(firstname='Frank'))
inner = Company.objects.filter(
ceo=OuterRef('pk')
).values('ceo').annotate(total_employees=Sum('num_employees')).values('total_employees')
outer = Employee.objects.annotate(total_employees=Subquery(inner)).filter(salary__lte=Subquery(inner))
self.assertSequenceEqual(
outer.order_by('-total_employees').values('salary', 'total_employees'),
[{'salary': 10, 'total_employees': 2300}, {'salary': 20, 'total_employees': 35}],
)
def test_subquery_references_joined_table_twice(self):
inner = Company.objects.filter(
num_chairs__gte=OuterRef('ceo__salary'),
num_employees__gte=OuterRef('point_of_contact__salary'),
)
# Another contrived example (there is no need to have a subquery here)
outer = Company.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertFalse(outer.exists())
def test_subquery_filter_by_aggregate(self):
Number.objects.create(integer=1000, float=1.2)
Employee.objects.create(salary=1000)
qs = Number.objects.annotate(
min_valuable_count=Subquery(
Employee.objects.filter(
salary=OuterRef('integer'),
).annotate(cnt=Count('salary')).filter(cnt__gt=0).values('cnt')[:1]
),
)
self.assertEqual(qs.get().float, 1.2)
def test_subquery_filter_by_lazy(self):
self.max.manager = Manager.objects.create(name='Manager')
self.max.save()
max_manager = SimpleLazyObject(
lambda: Manager.objects.get(pk=self.max.manager.pk)
)
qs = Company.objects.annotate(
ceo_manager=Subquery(
Employee.objects.filter(
lastname=OuterRef('ceo__lastname'),
).values('manager'),
),
).filter(ceo_manager=max_manager)
self.assertEqual(qs.get(), self.gmbh)
def test_aggregate_subquery_annotation(self):
with self.assertNumQueries(1) as ctx:
aggregate = Company.objects.annotate(
ceo_salary=Subquery(
Employee.objects.filter(
id=OuterRef('ceo_id'),
).values('salary')
),
).aggregate(
ceo_salary_gt_20=Count('pk', filter=Q(ceo_salary__gt=20)),
)
self.assertEqual(aggregate, {'ceo_salary_gt_20': 1})
# Aggregation over a subquery annotation doesn't annotate the subquery
# twice in the inner query.
sql = ctx.captured_queries[0]['sql']
self.assertLessEqual(sql.count('SELECT'), 3)
# GROUP BY isn't required to aggregate over a query that doesn't
# contain nested aggregates.
self.assertNotIn('GROUP BY', sql)
@skipUnlessDBFeature('supports_over_clause')
def test_aggregate_rawsql_annotation(self):
with self.assertNumQueries(1) as ctx:
aggregate = Company.objects.annotate(
salary=RawSQL('SUM(num_chairs) OVER (ORDER BY num_employees)', []),
).aggregate(
count=Count('pk'),
)
self.assertEqual(aggregate, {'count': 3})
sql = ctx.captured_queries[0]['sql']
self.assertNotIn('GROUP BY', sql)
def test_explicit_output_field(self):
class FuncA(Func):
output_field = CharField()
class FuncB(Func):
pass
expr = FuncB(FuncA())
self.assertEqual(expr.output_field, FuncA.output_field)
def test_outerref_mixed_case_table_name(self):
inner = Result.objects.filter(result_time__gte=OuterRef('experiment__assigned'))
outer = Result.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertFalse(outer.exists())
def test_outerref_with_operator(self):
inner = Company.objects.filter(num_employees=OuterRef('ceo__salary') + 2)
outer = Company.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertEqual(outer.get().name, 'Test GmbH')
def test_nested_outerref_with_function(self):
self.gmbh.point_of_contact = Employee.objects.get(lastname='Meyer')
self.gmbh.save()
inner = Employee.objects.filter(
lastname__startswith=Left(OuterRef(OuterRef('lastname')), 1),
)
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
point_of_contact__in=inner,
ceo__pk=OuterRef('pk'),
).values('name'),
),
).filter(ceo_company__isnull=False)
self.assertEqual(qs.get().ceo_company, 'Test GmbH')
def test_annotation_with_outerref(self):
gmbh_salary = Company.objects.annotate(
max_ceo_salary_raise=Subquery(
Company.objects.annotate(
salary_raise=OuterRef('num_employees') + F('num_employees'),
).order_by('-salary_raise').values('salary_raise')[:1],
output_field=IntegerField(),
),
).get(pk=self.gmbh.pk)
self.assertEqual(gmbh_salary.max_ceo_salary_raise, 2332)
def test_annotation_with_nested_outerref(self):
self.gmbh.point_of_contact = Employee.objects.get(lastname='Meyer')
self.gmbh.save()
inner = Employee.objects.annotate(
outer_lastname=OuterRef(OuterRef('lastname')),
).filter(lastname__startswith=Left('outer_lastname', 1))
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
point_of_contact__in=inner,
ceo__pk=OuterRef('pk'),
).values('name'),
),
).filter(ceo_company__isnull=False)
self.assertEqual(qs.get().ceo_company, 'Test GmbH')
def test_pickle_expression(self):
expr = Value(1)
expr.convert_value # populate cached property
self.assertEqual(pickle.loads(pickle.dumps(expr)), expr)
def test_incorrect_field_in_F_expression(self):
with self.assertRaisesMessage(FieldError, "Cannot resolve keyword 'nope' into field."):
list(Employee.objects.filter(firstname=F('nope')))
def test_incorrect_joined_field_in_F_expression(self):
with self.assertRaisesMessage(FieldError, "Cannot resolve keyword 'nope' into field."):
list(Company.objects.filter(ceo__pk=F('point_of_contact__nope')))
def test_exists_in_filter(self):
inner = Company.objects.filter(ceo=OuterRef('pk')).values('pk')
qs1 = Employee.objects.filter(Exists(inner))
qs2 = Employee.objects.annotate(found=Exists(inner)).filter(found=True)
self.assertCountEqual(qs1, qs2)
self.assertFalse(Employee.objects.exclude(Exists(inner)).exists())
self.assertCountEqual(qs2, Employee.objects.exclude(~Exists(inner)))
def test_subquery_in_filter(self):
inner = Company.objects.filter(ceo=OuterRef('pk')).values('based_in_eu')
self.assertSequenceEqual(
Employee.objects.filter(Subquery(inner)),
[self.foobar_ltd.ceo],
)
def test_subquery_group_by_outerref_in_filter(self):
inner = Company.objects.annotate(
employee=OuterRef('pk'),
).values('employee').annotate(
min_num_chairs=Min('num_chairs'),
).values('ceo')
self.assertIs(Employee.objects.filter(pk__in=Subquery(inner)).exists(), True)
def test_case_in_filter_if_boolean_output_field(self):
is_ceo = Company.objects.filter(ceo=OuterRef('pk'))
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
qs = Employee.objects.filter(
Case(
When(Exists(is_ceo), then=True),
When(Exists(is_poc), then=True),
default=False,
output_field=BooleanField(),
),
)
self.assertCountEqual(qs, [self.example_inc.ceo, self.foobar_ltd.ceo, self.max])
def test_boolean_expression_combined(self):
is_ceo = Company.objects.filter(ceo=OuterRef('pk'))
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) | Exists(is_poc)),
[self.example_inc.ceo, self.foobar_ltd.ceo, self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) & Exists(is_poc)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) & Q(salary__gte=30)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_poc) | Q(salary__lt=15)),
[self.example_inc.ceo, self.max],
)
self.assertCountEqual(
Employee.objects.filter(Q(salary__gte=30) & Exists(is_ceo)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Q(salary__lt=15) | Exists(is_poc)),
[self.example_inc.ceo, self.max],
)
def test_boolean_expression_combined_with_empty_Q(self):
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
tests = [
Exists(is_poc) & Q(),
Q() & Exists(is_poc),
Exists(is_poc) | Q(),
Q() | Exists(is_poc),
Q(Exists(is_poc)) & Q(),
Q() & Q(Exists(is_poc)),
Q(Exists(is_poc)) | Q(),
Q() | Q(Exists(is_poc)),
]
for conditions in tests:
with self.subTest(conditions):
self.assertCountEqual(Employee.objects.filter(conditions), [self.max])
def test_boolean_expression_in_Q(self):
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
self.assertCountEqual(Employee.objects.filter(Q(Exists(is_poc))), [self.max])
class IterableLookupInnerExpressionsTests(TestCase):
@classmethod
def setUpTestData(cls):
ceo = Employee.objects.create(firstname='Just', lastname='Doit', salary=30)
# MySQL requires that the values calculated for expressions don't pass
# outside of the field's range, so it's inconvenient to use the values
# in the more general tests.
cls.c5020 = Company.objects.create(name='5020 Ltd', num_employees=50, num_chairs=20, ceo=ceo)
cls.c5040 = Company.objects.create(name='5040 Ltd', num_employees=50, num_chairs=40, ceo=ceo)
cls.c5050 = Company.objects.create(name='5050 Ltd', num_employees=50, num_chairs=50, ceo=ceo)
cls.c5060 = Company.objects.create(name='5060 Ltd', num_employees=50, num_chairs=60, ceo=ceo)
cls.c99300 = Company.objects.create(name='99300 Ltd', num_employees=99, num_chairs=300, ceo=ceo)
def test_in_lookup_allows_F_expressions_and_expressions_for_integers(self):
# __in lookups can use F() expressions for integers.
queryset = Company.objects.filter(num_employees__in=([F('num_chairs') - 10]))
self.assertSequenceEqual(queryset, [self.c5060])
self.assertCountEqual(
Company.objects.filter(num_employees__in=([F('num_chairs') - 10, F('num_chairs') + 10])),
[self.c5040, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(
num_employees__in=([F('num_chairs') - 10, F('num_chairs'), F('num_chairs') + 10])
),
[self.c5040, self.c5050, self.c5060],
)
def test_expressions_in_lookups_join_choice(self):
midpoint = datetime.time(13, 0)
t1 = Time.objects.create(time=datetime.time(12, 0))
t2 = Time.objects.create(time=datetime.time(14, 0))
s1 = SimulationRun.objects.create(start=t1, end=t2, midpoint=midpoint)
SimulationRun.objects.create(start=t1, end=None, midpoint=midpoint)
SimulationRun.objects.create(start=None, end=t2, midpoint=midpoint)
SimulationRun.objects.create(start=None, end=None, midpoint=midpoint)
queryset = SimulationRun.objects.filter(midpoint__range=[F('start__time'), F('end__time')])
self.assertSequenceEqual(queryset, [s1])
for alias in queryset.query.alias_map.values():
if isinstance(alias, Join):
self.assertEqual(alias.join_type, constants.INNER)
queryset = SimulationRun.objects.exclude(midpoint__range=[F('start__time'), F('end__time')])
self.assertQuerysetEqual(queryset, [], ordered=False)
for alias in queryset.query.alias_map.values():
if isinstance(alias, Join):
self.assertEqual(alias.join_type, constants.LOUTER)
def test_range_lookup_allows_F_expressions_and_expressions_for_integers(self):
# Range lookups can use F() expressions for integers.
Company.objects.filter(num_employees__exact=F("num_chairs"))
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs'), 100)),
[self.c5020, self.c5040, self.c5050],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs') - 10, F('num_chairs') + 10)),
[self.c5040, self.c5050, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs') - 10, 100)),
[self.c5020, self.c5040, self.c5050, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(1, 100)),
[self.c5020, self.c5040, self.c5050, self.c5060, self.c99300],
)
def test_range_lookup_namedtuple(self):
EmployeeRange = namedtuple('EmployeeRange', ['minimum', 'maximum'])
qs = Company.objects.filter(
num_employees__range=EmployeeRange(minimum=51, maximum=100),
)
self.assertSequenceEqual(qs, [self.c99300])
@unittest.skipUnless(connection.vendor == 'sqlite',
"This defensive test only works on databases that don't validate parameter types")
def test_complex_expressions_do_not_introduce_sql_injection_via_untrusted_string_inclusion(self):
"""
This tests that SQL injection isn't possible using compilation of
expressions in iterable filters, as their compilation happens before
the main query compilation. It's limited to SQLite, as PostgreSQL,
Oracle and other vendors have defense in depth against this by type
checking. Testing against SQLite (the most permissive of the built-in
databases) demonstrates that the problem doesn't exist while keeping
the test simple.
"""
queryset = Company.objects.filter(name__in=[F('num_chairs') + '1)) OR ((1==1'])
self.assertQuerysetEqual(queryset, [], ordered=False)
def test_in_lookup_allows_F_expressions_and_expressions_for_datetimes(self):
start = datetime.datetime(2016, 2, 3, 15, 0, 0)
end = datetime.datetime(2016, 2, 5, 15, 0, 0)
experiment_1 = Experiment.objects.create(
name='Integrity testing',
assigned=start.date(),
start=start,
end=end,
completed=end.date(),
estimated_time=end - start,
)
experiment_2 = Experiment.objects.create(
name='Taste testing',
assigned=start.date(),
start=start,
end=end,
completed=end.date(),
estimated_time=end - start,
)
r1 = Result.objects.create(
experiment=experiment_1,
result_time=datetime.datetime(2016, 2, 4, 15, 0, 0),
)
Result.objects.create(
experiment=experiment_1,
result_time=datetime.datetime(2016, 3, 10, 2, 0, 0),
)
Result.objects.create(
experiment=experiment_2,
result_time=datetime.datetime(2016, 1, 8, 5, 0, 0),
)
within_experiment_time = [F('experiment__start'), F('experiment__end')]
queryset = Result.objects.filter(result_time__range=within_experiment_time)
self.assertSequenceEqual(queryset, [r1])
class FTests(SimpleTestCase):
def test_deepcopy(self):
f = F("foo")
g = deepcopy(f)
self.assertEqual(f.name, g.name)
def test_deconstruct(self):
f = F('name')
path, args, kwargs = f.deconstruct()
self.assertEqual(path, 'django.db.models.F')
self.assertEqual(args, (f.name,))
self.assertEqual(kwargs, {})
def test_equal(self):
f = F('name')
same_f = F('name')
other_f = F('username')
self.assertEqual(f, same_f)
self.assertNotEqual(f, other_f)
def test_hash(self):
d = {F('name'): 'Bob'}
self.assertIn(F('name'), d)
self.assertEqual(d[F('name')], 'Bob')
def test_not_equal_Value(self):
f = F('name')
value = Value('name')
self.assertNotEqual(f, value)
self.assertNotEqual(value, f)
class ExpressionsTests(TestCase):
def test_F_reuse(self):
f = F('id')
n = Number.objects.create(integer=-1)
c = Company.objects.create(
name="Example Inc.", num_employees=2300, num_chairs=5,
ceo=Employee.objects.create(firstname="Joe", lastname="Smith")
)
c_qs = Company.objects.filter(id=f)
self.assertEqual(c_qs.get(), c)
# Reuse the same F-object for another queryset
n_qs = Number.objects.filter(id=f)
self.assertEqual(n_qs.get(), n)
# The original query still works correctly
self.assertEqual(c_qs.get(), c)
def test_patterns_escape(self):
r"""
Special characters (e.g. %, _ and \) stored in database are
properly escaped when using a pattern lookup with an expression
refs #16731
"""
Employee.objects.bulk_create([
Employee(firstname="Johnny", lastname="%John"),
Employee(firstname="Jean-Claude", lastname="Claud_"),
Employee(firstname="Jean-Claude", lastname="Claude%"),
Employee(firstname="Johnny", lastname="Joh\\n"),
Employee(firstname="Johnny", lastname="_ohn"),
])
claude = Employee.objects.create(firstname='Jean-Claude', lastname='Claude')
john = Employee.objects.create(firstname='Johnny', lastname='John')
john_sign = Employee.objects.create(firstname='%Joh\\nny', lastname='%Joh\\n')
self.assertCountEqual(
Employee.objects.filter(firstname__contains=F('lastname')),
[john_sign, john, claude],
)
self.assertCountEqual(
Employee.objects.filter(firstname__startswith=F('lastname')),
[john_sign, john],
)
self.assertSequenceEqual(
Employee.objects.filter(firstname__endswith=F('lastname')),
[claude],
)
def test_insensitive_patterns_escape(self):
r"""
Special characters (e.g. %, _ and \) stored in database are
properly escaped when using a case insensitive pattern lookup with an
expression -- refs #16731
"""
Employee.objects.bulk_create([
Employee(firstname="Johnny", lastname="%john"),
Employee(firstname="Jean-Claude", lastname="claud_"),
Employee(firstname="Jean-Claude", lastname="claude%"),
Employee(firstname="Johnny", lastname="joh\\n"),
Employee(firstname="Johnny", lastname="_ohn"),
])
claude = Employee.objects.create(firstname='Jean-Claude', lastname='claude')
john = Employee.objects.create(firstname='Johnny', lastname='john')
john_sign = Employee.objects.create(firstname='%Joh\\nny', lastname='%joh\\n')
self.assertCountEqual(
Employee.objects.filter(firstname__icontains=F('lastname')),
[john_sign, john, claude],
)
self.assertCountEqual(
Employee.objects.filter(firstname__istartswith=F('lastname')),
[john_sign, john],
)
self.assertSequenceEqual(
Employee.objects.filter(firstname__iendswith=F('lastname')),
[claude],
)
@isolate_apps('expressions')
class SimpleExpressionTests(SimpleTestCase):
def test_equal(self):
self.assertEqual(Expression(), Expression())
self.assertEqual(
Expression(IntegerField()),
Expression(output_field=IntegerField())
)
self.assertEqual(Expression(IntegerField()), mock.ANY)
self.assertNotEqual(
Expression(IntegerField()),
Expression(CharField())
)
class TestModel(Model):
field = IntegerField()
other_field = IntegerField()
self.assertNotEqual(
Expression(TestModel._meta.get_field('field')),
Expression(TestModel._meta.get_field('other_field')),
)
def test_hash(self):
self.assertEqual(hash(Expression()), hash(Expression()))
self.assertEqual(
hash(Expression(IntegerField())),
hash(Expression(output_field=IntegerField()))
)
self.assertNotEqual(
hash(Expression(IntegerField())),
hash(Expression(CharField())),
)
class TestModel(Model):
field = IntegerField()
other_field = IntegerField()
self.assertNotEqual(
hash(Expression(TestModel._meta.get_field('field'))),
hash(Expression(TestModel._meta.get_field('other_field'))),
)
class ExpressionsNumericTests(TestCase):
@classmethod
def setUpTestData(cls):
Number(integer=-1).save()
Number(integer=42).save()
Number(integer=1337).save()
Number.objects.update(float=F('integer'))
def test_fill_with_value_from_same_object(self):
"""
We can fill a value in all objects with an other value of the
same object.
"""
self.assertQuerysetEqual(
Number.objects.all(),
[(-1, -1), (42, 42), (1337, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_increment_value(self):
"""
We can increment a value of all objects in a query set.
"""
self.assertEqual(Number.objects.filter(integer__gt=0).update(integer=F('integer') + 1), 2)
self.assertQuerysetEqual(
Number.objects.all(),
[(-1, -1), (43, 42), (1338, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_filter_not_equals_other_field(self):
"""
We can filter for objects, where a value is not equals the value
of an other field.
"""
self.assertEqual(Number.objects.filter(integer__gt=0).update(integer=F('integer') + 1), 2)
self.assertQuerysetEqual(
Number.objects.exclude(float=F('integer')),
[(43, 42), (1338, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_complex_expressions(self):
"""
Complex expressions of different connection types are possible.
"""
n = Number.objects.create(integer=10, float=123.45)
self.assertEqual(Number.objects.filter(pk=n.pk).update(
float=F('integer') + F('float') * 2), 1)
self.assertEqual(Number.objects.get(pk=n.pk).integer, 10)
self.assertEqual(Number.objects.get(pk=n.pk).float, Approximate(256.900, places=3))
def test_decimal_expression(self):
n = Number.objects.create(integer=1, decimal_value=Decimal('0.5'))
n.decimal_value = F('decimal_value') - Decimal('0.4')
n.save()
n.refresh_from_db()
self.assertEqual(n.decimal_value, Decimal('0.1'))
class ExpressionOperatorTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.n = Number.objects.create(integer=42, float=15.5)
cls.n1 = Number.objects.create(integer=-42, float=-15.5)
def test_lefthand_addition(self):
# LH Addition of floats and integers
Number.objects.filter(pk=self.n.pk).update(
integer=F('integer') + 15,
float=F('float') + 42.7
)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
def test_lefthand_subtraction(self):
# LH Subtraction of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') - 15, float=F('float') - 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(-27.200, places=3))
def test_lefthand_multiplication(self):
# Multiplication of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') * 15, float=F('float') * 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
def test_lefthand_division(self):
# LH Division of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') / 2, float=F('float') / 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 21)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(0.363, places=3))
def test_lefthand_modulo(self):
# LH Modulo arithmetic on integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') % 20)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 2)
def test_lefthand_bitwise_and(self):
# LH Bitwise ands on integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer').bitand(56))
Number.objects.filter(pk=self.n1.pk).update(integer=F('integer').bitand(-56))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 40)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -64)
def test_lefthand_bitwise_left_shift_operator(self):
Number.objects.update(integer=F('integer').bitleftshift(2))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 168)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -168)
def test_lefthand_bitwise_right_shift_operator(self):
Number.objects.update(integer=F('integer').bitrightshift(2))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 10)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -11)
def test_lefthand_bitwise_or(self):
# LH Bitwise or on integers
Number.objects.update(integer=F('integer').bitor(48))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 58)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -10)
def test_lefthand_transformed_field_bitwise_or(self):
Employee.objects.create(firstname='Max', lastname='Mustermann')
with register_lookup(CharField, Length):
qs = Employee.objects.annotate(bitor=F('lastname__length').bitor(48))
self.assertEqual(qs.get().bitor, 58)
def test_lefthand_power(self):
# LH Power arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') ** 2, float=F('float') ** 1.5)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 1764)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(61.02, places=2))
def test_lefthand_bitwise_xor(self):
Number.objects.update(integer=F('integer').bitxor(48))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 26)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -26)
def test_lefthand_bitwise_xor_null(self):
employee = Employee.objects.create(firstname='John', lastname='Doe')
Employee.objects.update(salary=F('salary').bitxor(48))
employee.refresh_from_db()
self.assertIsNone(employee.salary)
@unittest.skipUnless(connection.vendor == 'oracle', "Oracle doesn't support bitwise XOR.")
def test_lefthand_bitwise_xor_not_supported(self):
msg = 'Bitwise XOR is not supported in Oracle.'
with self.assertRaisesMessage(NotSupportedError, msg):
Number.objects.update(integer=F('integer').bitxor(48))
def test_right_hand_addition(self):
# Right hand operators
Number.objects.filter(pk=self.n.pk).update(integer=15 + F('integer'), float=42.7 + F('float'))
# RH Addition of floats and integers
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
def test_right_hand_subtraction(self):
Number.objects.filter(pk=self.n.pk).update(integer=15 - F('integer'), float=42.7 - F('float'))
# RH Subtraction of floats and integers
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, -27)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(27.200, places=3))
def test_right_hand_multiplication(self):
# RH Multiplication of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=15 * F('integer'), float=42.7 * F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
def test_right_hand_division(self):
# RH Division of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=640 / F('integer'), float=42.7 / F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 15)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(2.755, places=3))
def test_right_hand_modulo(self):
# RH Modulo arithmetic on integers
Number.objects.filter(pk=self.n.pk).update(integer=69 % F('integer'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
def test_righthand_power(self):
# RH Power arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=2 ** F('integer'), float=1.5 ** F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 4398046511104)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(536.308, places=3))
class FTimeDeltaTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.sday = sday = datetime.date(2010, 6, 25)
cls.stime = stime = datetime.datetime(2010, 6, 25, 12, 15, 30, 747000)
midnight = datetime.time(0)
delta0 = datetime.timedelta(0)
delta1 = datetime.timedelta(microseconds=253000)
delta2 = datetime.timedelta(seconds=44)
delta3 = datetime.timedelta(hours=21, minutes=8)
delta4 = datetime.timedelta(days=10)
delta5 = datetime.timedelta(days=90)
# Test data is set so that deltas and delays will be
# strictly increasing.
cls.deltas = []
cls.delays = []
cls.days_long = []
# e0: started same day as assigned, zero duration
end = stime + delta0
cls.e0 = Experiment.objects.create(
name='e0', assigned=sday, start=stime, end=end,
completed=end.date(), estimated_time=delta0,
)
cls.deltas.append(delta0)
cls.delays.append(cls.e0.start - datetime.datetime.combine(cls.e0.assigned, midnight))
cls.days_long.append(cls.e0.completed - cls.e0.assigned)
# e1: started one day after assigned, tiny duration, data
# set so that end time has no fractional seconds, which
# tests an edge case on sqlite.
delay = datetime.timedelta(1)
end = stime + delay + delta1
e1 = Experiment.objects.create(
name='e1', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta1,
)
cls.deltas.append(delta1)
cls.delays.append(e1.start - datetime.datetime.combine(e1.assigned, midnight))
cls.days_long.append(e1.completed - e1.assigned)
# e2: started three days after assigned, small duration
end = stime + delta2
e2 = Experiment.objects.create(
name='e2', assigned=sday - datetime.timedelta(3), start=stime,
end=end, completed=end.date(), estimated_time=datetime.timedelta(hours=1),
)
cls.deltas.append(delta2)
cls.delays.append(e2.start - datetime.datetime.combine(e2.assigned, midnight))
cls.days_long.append(e2.completed - e2.assigned)
# e3: started four days after assigned, medium duration
delay = datetime.timedelta(4)
end = stime + delay + delta3
e3 = Experiment.objects.create(
name='e3', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta3,
)
cls.deltas.append(delta3)
cls.delays.append(e3.start - datetime.datetime.combine(e3.assigned, midnight))
cls.days_long.append(e3.completed - e3.assigned)
# e4: started 10 days after assignment, long duration
end = stime + delta4
e4 = Experiment.objects.create(
name='e4', assigned=sday - datetime.timedelta(10), start=stime,
end=end, completed=end.date(), estimated_time=delta4 - datetime.timedelta(1),
)
cls.deltas.append(delta4)
cls.delays.append(e4.start - datetime.datetime.combine(e4.assigned, midnight))
cls.days_long.append(e4.completed - e4.assigned)
# e5: started a month after assignment, very long duration
delay = datetime.timedelta(30)
end = stime + delay + delta5
e5 = Experiment.objects.create(
name='e5', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta5,
)
cls.deltas.append(delta5)
cls.delays.append(e5.start - datetime.datetime.combine(e5.assigned, midnight))
cls.days_long.append(e5.completed - e5.assigned)
cls.expnames = [e.name for e in Experiment.objects.all()]
def test_multiple_query_compilation(self):
# Ticket #21643
queryset = Experiment.objects.filter(end__lt=F('start') + datetime.timedelta(hours=1))
q1 = str(queryset.query)
q2 = str(queryset.query)
self.assertEqual(q1, q2)
def test_query_clone(self):
# Ticket #21643 - Crash when compiling query more than once
qs = Experiment.objects.filter(end__lt=F('start') + datetime.timedelta(hours=1))
qs2 = qs.all()
list(qs)
list(qs2)
# Intentionally no assert
def test_delta_add(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.filter(end__lt=F('start') + delta)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(end__lt=delta + F('start'))]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(end__lte=F('start') + delta)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_delta_subtract(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.filter(start__gt=F('end') - delta)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(start__gte=F('end') - delta)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_exclude(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.exclude(end__lt=F('start') + delta)]
self.assertEqual(test_set, self.expnames[i:])
test_set = [e.name for e in Experiment.objects.exclude(end__lte=F('start') + delta)]
self.assertEqual(test_set, self.expnames[i + 1:])
def test_date_comparison(self):
for i, days in enumerate(self.days_long):
test_set = [e.name for e in Experiment.objects.filter(completed__lt=F('assigned') + days)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(completed__lte=F('assigned') + days)]
self.assertEqual(test_set, self.expnames[:i + 1])
@skipUnlessDBFeature("supports_mixed_date_datetime_comparisons")
def test_mixed_comparisons1(self):
for i, delay in enumerate(self.delays):
test_set = [e.name for e in Experiment.objects.filter(assigned__gt=F('start') - delay)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(assigned__gte=F('start') - delay)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_mixed_comparisons2(self):
for i, delay in enumerate(self.delays):
delay = datetime.timedelta(delay.days)
test_set = [e.name for e in Experiment.objects.filter(start__lt=F('assigned') + delay)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [
e.name for e in Experiment.objects.filter(start__lte=F('assigned') + delay + datetime.timedelta(1))
]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_delta_update(self):
for delta in self.deltas:
exps = Experiment.objects.all()
expected_durations = [e.duration() for e in exps]
expected_starts = [e.start + delta for e in exps]
expected_ends = [e.end + delta for e in exps]
Experiment.objects.update(start=F('start') + delta, end=F('end') + delta)
exps = Experiment.objects.all()
new_starts = [e.start for e in exps]
new_ends = [e.end for e in exps]
new_durations = [e.duration() for e in exps]
self.assertEqual(expected_starts, new_starts)
self.assertEqual(expected_ends, new_ends)
self.assertEqual(expected_durations, new_durations)
def test_invalid_operator(self):
with self.assertRaises(DatabaseError):
list(Experiment.objects.filter(start=F('start') * datetime.timedelta(0)))
def test_durationfield_add(self):
zeros = [e.name for e in Experiment.objects.filter(start=F('start') + F('estimated_time'))]
self.assertEqual(zeros, ['e0'])
end_less = [e.name for e in Experiment.objects.filter(end__lt=F('start') + F('estimated_time'))]
self.assertEqual(end_less, ['e2'])
delta_math = [
e.name for e in
Experiment.objects.filter(end__gte=F('start') + F('estimated_time') + datetime.timedelta(hours=1))
]
self.assertEqual(delta_math, ['e4'])
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('start') + Value(None, output_field=DurationField()),
output_field=DateTimeField(),
))
self.assertIsNone(queryset.first().shifted)
def test_durationfield_multiply_divide(self):
Experiment.objects.update(scalar=2)
tests = [
(Decimal('2'), 2),
(F('scalar'), 2),
(2, 2),
(3.2, 3.2),
]
for expr, scalar in tests:
with self.subTest(expr=expr):
qs = Experiment.objects.annotate(
multiplied=ExpressionWrapper(
expr * F('estimated_time'),
output_field=DurationField(),
),
divided=ExpressionWrapper(
F('estimated_time') / expr,
output_field=DurationField(),
),
)
for experiment in qs:
self.assertEqual(
experiment.multiplied,
experiment.estimated_time * scalar,
)
self.assertEqual(
experiment.divided,
experiment.estimated_time / scalar,
)
def test_duration_expressions(self):
for delta in self.deltas:
qs = Experiment.objects.annotate(duration=F('estimated_time') + delta)
for obj in qs:
self.assertEqual(obj.duration, obj.estimated_time + delta)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_subtraction(self):
queryset = Experiment.objects.annotate(
completion_duration=F('completed') - F('assigned'),
)
at_least_5_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=5))}
self.assertEqual(at_least_5_days, {'e3', 'e4', 'e5'})
at_least_120_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=120))}
self.assertEqual(at_least_120_days, {'e5'})
less_than_5_days = {e.name for e in queryset.filter(completion_duration__lt=datetime.timedelta(days=5))}
self.assertEqual(less_than_5_days, {'e0', 'e1', 'e2'})
queryset = Experiment.objects.annotate(
difference=F('completed') - Value(None, output_field=DateField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('completed') - Value(None, output_field=DurationField()),
output_field=DateField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_subquery_subtraction(self):
subquery = Experiment.objects.filter(pk=OuterRef('pk')).values('completed')
queryset = Experiment.objects.annotate(
difference=subquery - F('completed'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_case_subtraction(self):
queryset = Experiment.objects.annotate(
date_case=Case(
When(Q(name='e0'), then=F('completed')),
output_field=DateField(),
),
completed_value=Value(
self.e0.completed,
output_field=DateField(),
),
difference=F('date_case') - F('completed_value'),
).filter(difference=datetime.timedelta())
self.assertEqual(queryset.get(), self.e0)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_time_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
queryset = Time.objects.annotate(
difference=F('time') - Value(datetime.time(11, 15, 0)),
)
self.assertEqual(
queryset.get().difference,
datetime.timedelta(hours=1, minutes=15, seconds=15, microseconds=2345)
)
queryset = Time.objects.annotate(
difference=F('time') - Value(None, output_field=TimeField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Time.objects.annotate(shifted=ExpressionWrapper(
F('time') - Value(None, output_field=DurationField()),
output_field=TimeField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_time_subquery_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
subquery = Time.objects.filter(pk=OuterRef('pk')).values('time')
queryset = Time.objects.annotate(
difference=subquery - F('time'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subtraction(self):
under_estimate = [
e.name for e in Experiment.objects.filter(estimated_time__gt=F('end') - F('start'))
]
self.assertEqual(under_estimate, ['e2'])
over_estimate = [
e.name for e in Experiment.objects.filter(estimated_time__lt=F('end') - F('start'))
]
self.assertEqual(over_estimate, ['e4'])
queryset = Experiment.objects.annotate(
difference=F('start') - Value(None, output_field=DateTimeField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('start') - Value(None, output_field=DurationField()),
output_field=DateTimeField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subquery_subtraction(self):
subquery = Experiment.objects.filter(pk=OuterRef('pk')).values('start')
queryset = Experiment.objects.annotate(
difference=subquery - F('start'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subtraction_microseconds(self):
delta = datetime.timedelta(microseconds=8999999999999999)
Experiment.objects.update(end=F('start') + delta)
qs = Experiment.objects.annotate(delta=F('end') - F('start'))
for e in qs:
self.assertEqual(e.delta, delta)
def test_duration_with_datetime(self):
# Exclude e1 which has very high precision so we can test this on all
# backends regardless of whether or not it supports
# microsecond_precision.
over_estimate = Experiment.objects.exclude(name='e1').filter(
completed__gt=self.stime + F('estimated_time'),
).order_by('name')
self.assertQuerysetEqual(over_estimate, ['e3', 'e4', 'e5'], lambda e: e.name)
def test_duration_with_datetime_microseconds(self):
delta = datetime.timedelta(microseconds=8999999999999999)
qs = Experiment.objects.annotate(dt=ExpressionWrapper(
F('start') + delta,
output_field=DateTimeField(),
))
for e in qs:
self.assertEqual(e.dt, e.start + delta)
def test_date_minus_duration(self):
more_than_4_days = Experiment.objects.filter(
assigned__lt=F('completed') - Value(datetime.timedelta(days=4))
)
self.assertQuerysetEqual(more_than_4_days, ['e3', 'e4', 'e5'], lambda e: e.name)
def test_negative_timedelta_update(self):
# subtract 30 seconds, 30 minutes, 2 hours and 2 days
experiments = Experiment.objects.filter(name='e0').annotate(
start_sub_seconds=F('start') + datetime.timedelta(seconds=-30),
).annotate(
start_sub_minutes=F('start_sub_seconds') + datetime.timedelta(minutes=-30),
).annotate(
start_sub_hours=F('start_sub_minutes') + datetime.timedelta(hours=-2),
).annotate(
new_start=F('start_sub_hours') + datetime.timedelta(days=-2),
)
expected_start = datetime.datetime(2010, 6, 23, 9, 45, 0)
# subtract 30 microseconds
experiments = experiments.annotate(new_start=F('new_start') + datetime.timedelta(microseconds=-30))
expected_start += datetime.timedelta(microseconds=+746970)
experiments.update(start=F('new_start'))
e0 = Experiment.objects.get(name='e0')
self.assertEqual(e0.start, expected_start)
class ValueTests(TestCase):
def test_update_TimeField_using_Value(self):
Time.objects.create()
Time.objects.update(time=Value(datetime.time(1), output_field=TimeField()))
self.assertEqual(Time.objects.get().time, datetime.time(1))
def test_update_UUIDField_using_Value(self):
UUID.objects.create()
UUID.objects.update(uuid=Value(uuid.UUID('12345678901234567890123456789012'), output_field=UUIDField()))
self.assertEqual(UUID.objects.get().uuid, uuid.UUID('12345678901234567890123456789012'))
def test_deconstruct(self):
value = Value('name')
path, args, kwargs = value.deconstruct()
self.assertEqual(path, 'django.db.models.expressions.Value')
self.assertEqual(args, (value.value,))
self.assertEqual(kwargs, {})
def test_deconstruct_output_field(self):
value = Value('name', output_field=CharField())
path, args, kwargs = value.deconstruct()
self.assertEqual(path, 'django.db.models.expressions.Value')
self.assertEqual(args, (value.value,))
self.assertEqual(len(kwargs), 1)
self.assertEqual(kwargs['output_field'].deconstruct(), CharField().deconstruct())
def test_repr(self):
tests = [
(None, 'Value(None)'),
('str', "Value('str')"),
(True, 'Value(True)'),
(42, 'Value(42)'),
(
datetime.datetime(2019, 5, 15),
'Value(datetime.datetime(2019, 5, 15, 0, 0))',
),
(Decimal('3.14'), "Value(Decimal('3.14'))"),
]
for value, expected in tests:
with self.subTest(value=value):
self.assertEqual(repr(Value(value)), expected)
def test_equal(self):
value = Value('name')
self.assertEqual(value, Value('name'))
self.assertNotEqual(value, Value('username'))
def test_hash(self):
d = {Value('name'): 'Bob'}
self.assertIn(Value('name'), d)
self.assertEqual(d[Value('name')], 'Bob')
def test_equal_output_field(self):
value = Value('name', output_field=CharField())
same_value = Value('name', output_field=CharField())
other_value = Value('name', output_field=TimeField())
no_output_field = Value('name')
self.assertEqual(value, same_value)
self.assertNotEqual(value, other_value)
self.assertNotEqual(value, no_output_field)
def test_raise_empty_expressionlist(self):
msg = 'ExpressionList requires at least one expression'
with self.assertRaisesMessage(ValueError, msg):
ExpressionList()
def test_compile_unresolved(self):
# This test might need to be revisited later on if #25425 is enforced.
compiler = Time.objects.all().query.get_compiler(connection=connection)
value = Value('foo')
self.assertEqual(value.as_sql(compiler, connection), ('%s', ['foo']))
value = Value('foo', output_field=CharField())
self.assertEqual(value.as_sql(compiler, connection), ('%s', ['foo']))
def test_output_field_decimalfield(self):
Time.objects.create()
time = Time.objects.annotate(one=Value(1, output_field=DecimalField())).first()
self.assertEqual(time.one, 1)
def test_resolve_output_field(self):
value_types = [
('str', CharField),
(True, BooleanField),
(42, IntegerField),
(3.14, FloatField),
(datetime.date(2019, 5, 15), DateField),
(datetime.datetime(2019, 5, 15), DateTimeField),
(datetime.time(3, 16), TimeField),
(datetime.timedelta(1), DurationField),
(Decimal('3.14'), DecimalField),
(b'', BinaryField),
(uuid.uuid4(), UUIDField),
]
for value, output_field_type in value_types:
with self.subTest(type=type(value)):
expr = Value(value)
self.assertIsInstance(expr.output_field, output_field_type)
def test_resolve_output_field_failure(self):
msg = 'Cannot resolve expression type, unknown output_field'
with self.assertRaisesMessage(FieldError, msg):
Value(object()).output_field
class ExistsTests(TestCase):
def test_optimizations(self):
with CaptureQueriesContext(connection) as context:
list(Experiment.objects.values(exists=Exists(
Experiment.objects.order_by('pk'),
)).order_by())
captured_queries = context.captured_queries
self.assertEqual(len(captured_queries), 1)
captured_sql = captured_queries[0]['sql']
self.assertNotIn(
connection.ops.quote_name(Experiment._meta.pk.column),
captured_sql,
)
self.assertIn(
connection.ops.limit_offset_sql(None, 1),
captured_sql,
)
self.assertNotIn('ORDER BY', captured_sql)
class FieldTransformTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.sday = sday = datetime.date(2010, 6, 25)
cls.stime = stime = datetime.datetime(2010, 6, 25, 12, 15, 30, 747000)
cls.ex1 = Experiment.objects.create(
name='Experiment 1',
assigned=sday,
completed=sday + datetime.timedelta(2),
estimated_time=datetime.timedelta(2),
start=stime,
end=stime + datetime.timedelta(2),
)
def test_month_aggregation(self):
self.assertEqual(
Experiment.objects.aggregate(month_count=Count('assigned__month')),
{'month_count': 1}
)
def test_transform_in_values(self):
self.assertSequenceEqual(
Experiment.objects.values('assigned__month'),
[{'assigned__month': 6}],
)
def test_multiple_transforms_in_values(self):
self.assertSequenceEqual(
Experiment.objects.values('end__date__month'),
[{'end__date__month': 6}],
)
class ReprTests(SimpleTestCase):
def test_expressions(self):
self.assertEqual(
repr(Case(When(a=1))),
"<Case: CASE WHEN <Q: (AND: ('a', 1))> THEN Value(None), ELSE Value(None)>"
)
self.assertEqual(
repr(When(Q(age__gte=18), then=Value('legal'))),
"<When: WHEN <Q: (AND: ('age__gte', 18))> THEN Value('legal')>"
)
self.assertEqual(repr(Col('alias', 'field')), "Col(alias, field)")
self.assertEqual(repr(F('published')), "F(published)")
self.assertEqual(repr(F('cost') + F('tax')), "<CombinedExpression: F(cost) + F(tax)>")
self.assertEqual(
repr(ExpressionWrapper(F('cost') + F('tax'), IntegerField())),
"ExpressionWrapper(F(cost) + F(tax))"
)
self.assertEqual(repr(Func('published', function='TO_CHAR')), "Func(F(published), function=TO_CHAR)")
self.assertEqual(repr(OrderBy(Value(1))), 'OrderBy(Value(1), descending=False)')
self.assertEqual(repr(RawSQL('table.col', [])), "RawSQL(table.col, [])")
self.assertEqual(repr(Ref('sum_cost', Sum('cost'))), "Ref(sum_cost, Sum(F(cost)))")
self.assertEqual(repr(Value(1)), "Value(1)")
self.assertEqual(
repr(ExpressionList(F('col'), F('anothercol'))),
'ExpressionList(F(col), F(anothercol))'
)
self.assertEqual(
repr(ExpressionList(OrderBy(F('col'), descending=False))),
'ExpressionList(OrderBy(F(col), descending=False))'
)
def test_functions(self):
self.assertEqual(repr(Coalesce('a', 'b')), "Coalesce(F(a), F(b))")
self.assertEqual(repr(Concat('a', 'b')), "Concat(ConcatPair(F(a), F(b)))")
self.assertEqual(repr(Length('a')), "Length(F(a))")
self.assertEqual(repr(Lower('a')), "Lower(F(a))")
self.assertEqual(repr(Substr('a', 1, 3)), "Substr(F(a), Value(1), Value(3))")
self.assertEqual(repr(Upper('a')), "Upper(F(a))")
def test_aggregates(self):
self.assertEqual(repr(Avg('a')), "Avg(F(a))")
self.assertEqual(repr(Count('a')), "Count(F(a))")
self.assertEqual(repr(Count('*')), "Count('*')")
self.assertEqual(repr(Max('a')), "Max(F(a))")
self.assertEqual(repr(Min('a')), "Min(F(a))")
self.assertEqual(repr(StdDev('a')), "StdDev(F(a), sample=False)")
self.assertEqual(repr(Sum('a')), "Sum(F(a))")
self.assertEqual(repr(Variance('a', sample=True)), "Variance(F(a), sample=True)")
def test_distinct_aggregates(self):
self.assertEqual(repr(Count('a', distinct=True)), "Count(F(a), distinct=True)")
self.assertEqual(repr(Count('*', distinct=True)), "Count('*', distinct=True)")
def test_filtered_aggregates(self):
filter = Q(a=1)
self.assertEqual(repr(Avg('a', filter=filter)), "Avg(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Count('a', filter=filter)), "Count(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Max('a', filter=filter)), "Max(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Min('a', filter=filter)), "Min(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(StdDev('a', filter=filter)), "StdDev(F(a), filter=(AND: ('a', 1)), sample=False)")
self.assertEqual(repr(Sum('a', filter=filter)), "Sum(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(
repr(Variance('a', sample=True, filter=filter)),
"Variance(F(a), filter=(AND: ('a', 1)), sample=True)"
)
self.assertEqual(
repr(Count('a', filter=filter, distinct=True)), "Count(F(a), distinct=True, filter=(AND: ('a', 1)))"
)
class CombinableTests(SimpleTestCase):
bitwise_msg = 'Use .bitand() and .bitor() for bitwise logical operations.'
def test_negation(self):
c = Combinable()
self.assertEqual(-c, c * -1)
def test_and(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
Combinable() & Combinable()
def test_or(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
Combinable() | Combinable()
def test_reversed_and(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
object() & Combinable()
def test_reversed_or(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
object() | Combinable()
class CombinedExpressionTests(SimpleTestCase):
def test_resolve_output_field(self):
tests = [
(IntegerField, AutoField, IntegerField),
(AutoField, IntegerField, IntegerField),
(IntegerField, DecimalField, DecimalField),
(DecimalField, IntegerField, DecimalField),
(IntegerField, FloatField, FloatField),
(FloatField, IntegerField, FloatField),
]
connectors = [Combinable.ADD, Combinable.SUB, Combinable.MUL, Combinable.DIV]
for lhs, rhs, combined in tests:
for connector in connectors:
with self.subTest(lhs=lhs, connector=connector, rhs=rhs, combined=combined):
expr = CombinedExpression(
Expression(lhs()),
connector,
Expression(rhs()),
)
self.assertIsInstance(expr.output_field, combined)
class ExpressionWrapperTests(SimpleTestCase):
def test_empty_group_by(self):
expr = ExpressionWrapper(Value(3), output_field=IntegerField())
self.assertEqual(expr.get_group_by_cols(alias=None), [])
def test_non_empty_group_by(self):
value = Value('f')
value.output_field = None
expr = ExpressionWrapper(Lower(value), output_field=IntegerField())
group_by_cols = expr.get_group_by_cols(alias=None)
self.assertEqual(group_by_cols, [expr.expression])
self.assertEqual(group_by_cols[0].output_field, expr.output_field)
class OrderByTests(SimpleTestCase):
def test_equal(self):
self.assertEqual(
OrderBy(F('field'), nulls_last=True),
OrderBy(F('field'), nulls_last=True),
)
self.assertNotEqual(
OrderBy(F('field'), nulls_last=True),
OrderBy(F('field'), nulls_last=False),
)
def test_hash(self):
self.assertEqual(
hash(OrderBy(F('field'), nulls_last=True)),
hash(OrderBy(F('field'), nulls_last=True)),
)
self.assertNotEqual(
hash(OrderBy(F('field'), nulls_last=True)),
hash(OrderBy(F('field'), nulls_last=False)),
)
|
4e3fe2aedf02abb625cd6676c6cc9d11ae260edd1fe44f3f7aff31b78bfd212e | import datetime
from django.contrib import admin
from django.contrib.admin.models import LogEntry
from django.contrib.admin.options import IncorrectLookupParameters
from django.contrib.admin.templatetags.admin_list import pagination
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.admin.views.main import (
ALL_VAR, IS_POPUP_VAR, ORDER_VAR, PAGE_VAR, SEARCH_VAR, TO_FIELD_VAR,
)
from django.contrib.auth.models import User
from django.contrib.contenttypes.models import ContentType
from django.contrib.messages.storage.cookie import CookieStorage
from django.db import connection, models
from django.db.models import F, Field, IntegerField
from django.db.models.functions import Upper
from django.db.models.lookups import Contains, Exact
from django.template import Context, Template, TemplateSyntaxError
from django.test import TestCase, override_settings
from django.test.client import RequestFactory
from django.test.utils import (
CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.urls import reverse
from django.utils import formats
from .admin import (
BandAdmin, ChildAdmin, ChordsBandAdmin, ConcertAdmin,
CustomPaginationAdmin, CustomPaginator, DynamicListDisplayChildAdmin,
DynamicListDisplayLinksChildAdmin, DynamicListFilterChildAdmin,
DynamicSearchFieldsChildAdmin, EmptyValueChildAdmin, EventAdmin,
FilteredChildAdmin, GroupAdmin, InvitationAdmin,
NoListDisplayLinksParentAdmin, ParentAdmin, QuartetAdmin, SwallowAdmin,
site as custom_site,
)
from .models import (
Band, CharPK, Child, ChordsBand, ChordsMusician, Concert, CustomIdUser,
Event, Genre, Group, Invitation, Membership, Musician, OrderedObject,
Parent, Quartet, Swallow, SwallowOneToOne, UnorderedObject,
)
def build_tbody_html(pk, href, extra_fields):
return (
'<tbody><tr>'
'<td class="action-checkbox">'
'<input type="checkbox" name="_selected_action" value="{}" '
'class="action-select"></td>'
'<th class="field-name"><a href="{}">name</a></th>'
'{}</tr></tbody>'
).format(pk, href, extra_fields)
@override_settings(ROOT_URLCONF="admin_changelist.urls")
class ChangeListTests(TestCase):
factory = RequestFactory()
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', email='[email protected]', password='xxx')
def _create_superuser(self, username):
return User.objects.create_superuser(username=username, email='[email protected]', password='xxx')
def _mocked_authenticated_request(self, url, user):
request = self.factory.get(url)
request.user = user
return request
def test_repr(self):
m = ChildAdmin(Child, custom_site)
request = self.factory.get('/child/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(repr(cl), '<ChangeList: model=Child model_admin=ChildAdmin>')
def test_specified_ordering_by_f_expression(self):
class OrderedByFBandAdmin(admin.ModelAdmin):
list_display = ['name', 'genres', 'nr_of_members']
ordering = (
F('nr_of_members').desc(nulls_last=True),
Upper(F('name')).asc(),
F('genres').asc(),
)
m = OrderedByFBandAdmin(Band, custom_site)
request = self.factory.get('/band/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.get_ordering_field_columns(), {3: 'desc', 2: 'asc'})
def test_specified_ordering_by_f_expression_without_asc_desc(self):
class OrderedByFBandAdmin(admin.ModelAdmin):
list_display = ['name', 'genres', 'nr_of_members']
ordering = (F('nr_of_members'), Upper('name'), F('genres'))
m = OrderedByFBandAdmin(Band, custom_site)
request = self.factory.get('/band/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.get_ordering_field_columns(), {3: 'asc', 2: 'asc'})
def test_select_related_preserved(self):
"""
Regression test for #10348: ChangeList.get_queryset() shouldn't
overwrite a custom select_related provided by ModelAdmin.get_queryset().
"""
m = ChildAdmin(Child, custom_site)
request = self.factory.get('/child/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'parent': {}})
def test_select_related_preserved_when_multi_valued_in_search_fields(self):
parent = Parent.objects.create(name='Mary')
Child.objects.create(parent=parent, name='Danielle')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={SEARCH_VAR: 'daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 1)
# select_related is preserved.
self.assertEqual(cl.queryset.query.select_related, {'child': {}})
def test_select_related_as_tuple(self):
ia = InvitationAdmin(Invitation, custom_site)
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'player': {}})
def test_select_related_as_empty_tuple(self):
ia = InvitationAdmin(Invitation, custom_site)
ia.list_select_related = ()
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertIs(cl.queryset.query.select_related, False)
def test_get_select_related_custom_method(self):
class GetListSelectRelatedAdmin(admin.ModelAdmin):
list_display = ('band', 'player')
def get_list_select_related(self, request):
return ('band', 'player')
ia = GetListSelectRelatedAdmin(Invitation, custom_site)
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'player': {}, 'band': {}})
def test_result_list_empty_changelist_value(self):
"""
Regression test for #14982: EMPTY_CHANGELIST_VALUE should be honored
for relationship fields
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">-</td>')
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_set_empty_value_display_on_admin_site(self):
"""
Empty value display can be set on AdminSite.
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
# Set a new empty display value on AdminSite.
admin.site.empty_value_display = '???'
m = ChildAdmin(Child, admin.site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">???</td>')
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_set_empty_value_display_in_model_admin(self):
"""
Empty value display can be set in ModelAdmin or individual fields.
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
m = EmptyValueChildAdmin(Child, admin.site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(
new_child.id,
link,
'<td class="field-age_display">&dagger;</td>'
'<td class="field-age">-empty-</td>'
)
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_html(self):
"""
Inclusion tag result_list generates a table when with default
ModelAdmin settings.
"""
new_parent = Parent.objects.create(name='parent')
new_child = Child.objects.create(name='name', parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">%s</td>' % new_parent)
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_editable_html(self):
"""
Regression tests for #11791: Inclusion tag result_list generates a
table and this checks that the items are nested within the table
element tags.
Also a regression test for #13599, verifies that hidden fields
when list_editable is enabled are rendered in a div outside the
table.
"""
new_parent = Parent.objects.create(name='parent')
new_child = Child.objects.create(name='name', parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
# Test with list_editable fields
m.list_display = ['id', 'name', 'parent']
m.list_display_links = ['id']
m.list_editable = ['name']
cl = m.get_changelist_instance(request)
FormSet = m.get_changelist_formset(request)
cl.formset = FormSet(queryset=cl.result_list)
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
# make sure that hidden fields are in the correct place
hiddenfields_div = (
'<div class="hiddenfields">'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'</div>'
) % new_child.id
self.assertInHTML(hiddenfields_div, table_output, msg_prefix='Failed to find hidden fields')
# make sure that list editable fields are rendered in divs correctly
editable_name_field = (
'<input name="form-0-name" value="name" class="vTextField" '
'maxlength="30" type="text" id="id_form-0-name">'
)
self.assertInHTML(
'<td class="field-name">%s</td>' % editable_name_field,
table_output,
msg_prefix='Failed to find "name" list_editable field',
)
def test_result_list_editable(self):
"""
Regression test for #14312: list_editable with pagination
"""
new_parent = Parent.objects.create(name='parent')
for i in range(1, 201):
Child.objects.create(name='name %s' % i, parent=new_parent)
request = self.factory.get('/child/', data={'p': -1}) # Anything outside range
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
# Test with list_editable fields
m.list_display = ['id', 'name', 'parent']
m.list_display_links = ['id']
m.list_editable = ['name']
with self.assertRaises(IncorrectLookupParameters):
m.get_changelist_instance(request)
def test_custom_paginator(self):
new_parent = Parent.objects.create(name='parent')
for i in range(1, 201):
Child.objects.create(name='name %s' % i, parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = CustomPaginationAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertIsInstance(cl.paginator, CustomPaginator)
def test_no_duplicates_for_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Basic ManyToMany.
"""
blues = Genre.objects.create(name='Blues')
band = Band.objects.create(name='B.B. King Review', nr_of_members=11)
band.genres.add(blues)
band.genres.add(blues)
m = BandAdmin(Band, custom_site)
request = self.factory.get('/band/', data={'genres': blues.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Group instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_through_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. With an intermediate model.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = GroupAdmin(Group, custom_site)
request = self.factory.get('/group/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Group instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_through_m2m_at_second_level_in_list_filter(self):
"""
When using a ManyToMany in list_filter at the second level behind a
ForeignKey, results shouldn't appear more than once.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = ConcertAdmin(Concert, custom_site)
request = self.factory.get('/concert/', data={'group__members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Concert instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_inherited_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Model managed in the
admin inherits from the one that defines the relationship.
"""
lead = Musician.objects.create(name='John')
four = Quartet.objects.create(name='The Beatles')
Membership.objects.create(group=four, music=lead, role='lead voice')
Membership.objects.create(group=four, music=lead, role='guitar player')
m = QuartetAdmin(Quartet, custom_site)
request = self.factory.get('/quartet/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Quartet instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_m2m_to_inherited_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Target of the relationship
inherits from another.
"""
lead = ChordsMusician.objects.create(name='Player A')
three = ChordsBand.objects.create(name='The Chords Trio')
Invitation.objects.create(band=three, player=lead, instrument='guitar')
Invitation.objects.create(band=three, player=lead, instrument='bass')
m = ChordsBandAdmin(ChordsBand, custom_site)
request = self.factory.get('/chordsband/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one ChordsBand instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_non_unique_related_object_in_list_filter(self):
"""
Regressions tests for #15819: If a field listed in list_filters is a
non-unique related object, results shouldn't appear more than once.
"""
parent = Parent.objects.create(name='Mary')
# Two children with the same name
Child.objects.create(parent=parent, name='Daniel')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={'child__name': 'Daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# Exists() is applied.
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_changelist_search_form_validation(self):
m = ConcertAdmin(Concert, custom_site)
tests = [
({SEARCH_VAR: '\x00'}, 'Null characters are not allowed.'),
({SEARCH_VAR: 'some\x00thing'}, 'Null characters are not allowed.'),
]
for case, error in tests:
with self.subTest(case=case):
request = self.factory.get('/concert/', case)
request.user = self.superuser
request._messages = CookieStorage(request)
m.get_changelist_instance(request)
messages = [m.message for m in request._messages]
self.assertEqual(1, len(messages))
self.assertEqual(error, messages[0])
def test_no_duplicates_for_non_unique_related_object_in_search_fields(self):
"""
Regressions tests for #15819: If a field listed in search_fields
is a non-unique related object, Exists() must be applied.
"""
parent = Parent.objects.create(name='Mary')
Child.objects.create(parent=parent, name='Danielle')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={SEARCH_VAR: 'daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# Exists() is applied.
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_many_to_many_at_second_level_in_search_fields(self):
"""
When using a ManyToMany in search_fields at the second level behind a
ForeignKey, Exists() must be applied and results shouldn't appear more
than once.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = ConcertAdmin(Concert, custom_site)
request = self.factory.get('/concert/', data={SEARCH_VAR: 'vox'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# There's only one Concert instance
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_pk_in_search_fields(self):
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__pk']
request = self.factory.get('/concert/', data={SEARCH_VAR: band.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 1)
request = self.factory.get('/concert/', data={SEARCH_VAR: band.pk + 5})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 0)
def test_builtin_lookup_in_search_fields(self):
band = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['name__iexact']
request = self.factory.get('/', data={SEARCH_VAR: 'woodstock'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: 'wood'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_custom_lookup_in_search_fields(self):
band = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__name__cc']
with register_lookup(Field, Contains, lookup_name='cc'):
request = self.factory.get('/', data={SEARCH_VAR: 'Hype'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: 'Woodstock'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_spanning_relations_with_custom_lookup_in_search_fields(self):
hype = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=hype)
vox = Musician.objects.create(name='Vox', age=20)
Membership.objects.create(music=vox, group=hype)
# Register a custom lookup on IntegerField to ensure that field
# traversing logic in ModelAdmin.get_search_results() works.
with register_lookup(IntegerField, Exact, lookup_name='exactly'):
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__members__age__exactly']
request = self.factory.get('/', data={SEARCH_VAR: '20'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: '21'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_custom_lookup_with_pk_shortcut(self):
self.assertEqual(CharPK._meta.pk.name, 'char_pk') # Not equal to 'pk'.
m = admin.ModelAdmin(CustomIdUser, custom_site)
abc = CharPK.objects.create(char_pk='abc')
abcd = CharPK.objects.create(char_pk='abcd')
m = admin.ModelAdmin(CharPK, custom_site)
m.search_fields = ['pk__exact']
request = self.factory.get('/', data={SEARCH_VAR: 'abc'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [abc])
request = self.factory.get('/', data={SEARCH_VAR: 'abcd'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [abcd])
def test_no_exists_for_m2m_in_list_filter_without_params(self):
"""
If a ManyToManyField is in list_filter but isn't in any lookup params,
the changelist's query shouldn't have Exists().
"""
m = BandAdmin(Band, custom_site)
for lookup_params in ({}, {'name': 'test'}):
request = self.factory.get('/band/', lookup_params)
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertNotIn(' EXISTS', str(cl.queryset.query))
# A ManyToManyField in params does have Exists() applied.
request = self.factory.get('/band/', {'genres': '0'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertIn(' EXISTS', str(cl.queryset.query))
def test_pagination(self):
"""
Regression tests for #12893: Pagination in admins changelist doesn't
use queryset set by modeladmin.
"""
parent = Parent.objects.create(name='anything')
for i in range(1, 31):
Child.objects.create(name='name %s' % i, parent=parent)
Child.objects.create(name='filtered %s' % i, parent=parent)
request = self.factory.get('/child/')
request.user = self.superuser
# Test default queryset
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 60)
self.assertEqual(cl.paginator.count, 60)
self.assertEqual(list(cl.paginator.page_range), [1, 2, 3, 4, 5, 6])
# Test custom queryset
m = FilteredChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 30)
self.assertEqual(cl.paginator.count, 30)
self.assertEqual(list(cl.paginator.page_range), [1, 2, 3])
def test_computed_list_display_localization(self):
"""
Regression test for #13196: output of functions should be localized
in the changelist.
"""
self.client.force_login(self.superuser)
event = Event.objects.create(date=datetime.date.today())
response = self.client.get(reverse('admin:admin_changelist_event_changelist'))
self.assertContains(response, formats.localize(event.date))
self.assertNotContains(response, str(event.date))
def test_dynamic_list_display(self):
"""
Regression tests for #14206: dynamic list_display support.
"""
parent = Parent.objects.create(name='parent')
for i in range(10):
Child.objects.create(name='child %s' % i, parent=parent)
user_noparents = self._create_superuser('noparents')
user_parents = self._create_superuser('parents')
# Test with user 'noparents'
m = custom_site._registry[Child]
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertNotContains(response, 'Parent object')
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ['name', 'age'])
self.assertEqual(list_display_links, ['name'])
# Test with user 'parents'
m = DynamicListDisplayChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_parents)
response = m.changelist_view(request)
self.assertContains(response, 'Parent object')
custom_site.unregister(Child)
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ('parent', 'name', 'age'))
self.assertEqual(list_display_links, ['parent'])
# Test default implementation
custom_site.register(Child, ChildAdmin)
m = custom_site._registry[Child]
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertContains(response, 'Parent object')
def test_show_all(self):
parent = Parent.objects.create(name='anything')
for i in range(1, 31):
Child.objects.create(name='name %s' % i, parent=parent)
Child.objects.create(name='filtered %s' % i, parent=parent)
# Add "show all" parameter to request
request = self.factory.get('/child/', data={ALL_VAR: ''})
request.user = self.superuser
# Test valid "show all" request (number of total objects is under max)
m = ChildAdmin(Child, custom_site)
m.list_max_show_all = 200
# 200 is the max we'll pass to ChangeList
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertEqual(len(cl.result_list), 60)
# Test invalid "show all" request (number of total objects over max)
# falls back to paginated pages
m = ChildAdmin(Child, custom_site)
m.list_max_show_all = 30
# 30 is the max we'll pass to ChangeList for this test
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertEqual(len(cl.result_list), 10)
def test_dynamic_list_display_links(self):
"""
Regression tests for #16257: dynamic list_display_links support.
"""
parent = Parent.objects.create(name='parent')
for i in range(1, 10):
Child.objects.create(id=i, name='child %s' % i, parent=parent, age=i)
m = DynamicListDisplayLinksChildAdmin(Child, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/child/', superuser)
response = m.changelist_view(request)
for i in range(1, 10):
link = reverse('admin:admin_changelist_child_change', args=(i,))
self.assertContains(response, '<a href="%s">%s</a>' % (link, i))
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ('parent', 'name', 'age'))
self.assertEqual(list_display_links, ['age'])
def test_no_list_display_links(self):
"""#15185 -- Allow no links from the 'change list' view grid."""
p = Parent.objects.create(name='parent')
m = NoListDisplayLinksParentAdmin(Parent, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/parent/', superuser)
response = m.changelist_view(request)
link = reverse('admin:admin_changelist_parent_change', args=(p.pk,))
self.assertNotContains(response, '<a href="%s">' % link)
def test_clear_all_filters_link(self):
self.client.force_login(self.superuser)
url = reverse('admin:auth_user_changelist')
response = self.client.get(url)
self.assertNotContains(response, '✖ Clear all filters')
link = '<a href="%s">✖ Clear all filters</a>'
for data, href in (
({'is_staff__exact': '0'}, '?'),
(
{'is_staff__exact': '0', 'username__startswith': 'test'},
'?username__startswith=test',
),
(
{'is_staff__exact': '0', SEARCH_VAR: 'test'},
'?%s=test' % SEARCH_VAR,
),
(
{'is_staff__exact': '0', IS_POPUP_VAR: 'id'},
'?%s=id' % IS_POPUP_VAR,
),
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertContains(response, link % href)
def test_clear_all_filters_link_callable_filter(self):
self.client.force_login(self.superuser)
url = reverse('admin:admin_changelist_band_changelist')
response = self.client.get(url)
self.assertNotContains(response, '✖ Clear all filters')
link = '<a href="%s">✖ Clear all filters</a>'
for data, href in (
({'nr_of_members_partition': '5'}, '?'),
(
{'nr_of_members_partition': 'more', 'name__startswith': 'test'},
'?name__startswith=test',
),
(
{'nr_of_members_partition': '5', IS_POPUP_VAR: 'id'},
'?%s=id' % IS_POPUP_VAR,
),
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertContains(response, link % href)
def test_no_clear_all_filters_link(self):
self.client.force_login(self.superuser)
url = reverse('admin:auth_user_changelist')
link = '>✖ Clear all filters</a>'
for data in (
{SEARCH_VAR: 'test'},
{ORDER_VAR: '-1'},
{TO_FIELD_VAR: 'id'},
{PAGE_VAR: '1'},
{IS_POPUP_VAR: '1'},
{'username__startswith': 'test'},
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertNotContains(response, link)
def test_tuple_list_display(self):
swallow = Swallow.objects.create(origin='Africa', load='12.34', speed='22.2')
swallow2 = Swallow.objects.create(origin='Africa', load='12.34', speed='22.2')
swallow_o2o = SwallowOneToOne.objects.create(swallow=swallow2)
model_admin = SwallowAdmin(Swallow, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/swallow/', superuser)
response = model_admin.changelist_view(request)
# just want to ensure it doesn't blow up during rendering
self.assertContains(response, str(swallow.origin))
self.assertContains(response, str(swallow.load))
self.assertContains(response, str(swallow.speed))
# Reverse one-to-one relations should work.
self.assertContains(response, '<td class="field-swallowonetoone">-</td>')
self.assertContains(response, '<td class="field-swallowonetoone">%s</td>' % swallow_o2o)
def test_multiuser_edit(self):
"""
Simultaneous edits of list_editable fields on the changelist by
different users must not result in one user's edits creating a new
object instead of modifying the correct existing object (#11313).
"""
# To replicate this issue, simulate the following steps:
# 1. User1 opens an admin changelist with list_editable fields.
# 2. User2 edits object "Foo" such that it moves to another page in
# the pagination order and saves.
# 3. User1 edits object "Foo" and saves.
# 4. The edit made by User1 does not get applied to object "Foo" but
# instead is used to create a new object (bug).
# For this test, order the changelist by the 'speed' attribute and
# display 3 objects per page (SwallowAdmin.list_per_page = 3).
# Setup the test to reflect the DB state after step 2 where User2 has
# edited the first swallow object's speed from '4' to '1'.
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
b = Swallow.objects.create(origin='Swallow B', load=2, speed=2)
c = Swallow.objects.create(origin='Swallow C', load=5, speed=5)
d = Swallow.objects.create(origin='Swallow D', load=9, speed=9)
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
# Send the POST from User1 for step 3. It's still using the changelist
# ordering from before User2's edits in step 2.
data = {
'form-TOTAL_FORMS': '3',
'form-INITIAL_FORMS': '3',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(d.pk),
'form-1-uuid': str(c.pk),
'form-2-uuid': str(a.pk),
'form-0-load': '9.0',
'form-0-speed': '9.0',
'form-1-load': '5.0',
'form-1-speed': '5.0',
'form-2-load': '5.0',
'form-2-speed': '4.0',
'_save': 'Save',
}
response = self.client.post(changelist_url, data, follow=True, extra={'o': '-2'})
# The object User1 edited in step 3 is displayed on the changelist and
# has the correct edits applied.
self.assertContains(response, '1 swallow was changed successfully.')
self.assertContains(response, a.origin)
a.refresh_from_db()
self.assertEqual(a.load, float(data['form-2-load']))
self.assertEqual(a.speed, float(data['form-2-speed']))
b.refresh_from_db()
self.assertEqual(b.load, 2)
self.assertEqual(b.speed, 2)
c.refresh_from_db()
self.assertEqual(c.load, float(data['form-1-load']))
self.assertEqual(c.speed, float(data['form-1-speed']))
d.refresh_from_db()
self.assertEqual(d.load, float(data['form-0-load']))
self.assertEqual(d.speed, float(data['form-0-speed']))
# No new swallows were created.
self.assertEqual(len(Swallow.objects.all()), 4)
def test_get_edited_object_ids(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
b = Swallow.objects.create(origin='Swallow B', load=2, speed=2)
c = Swallow.objects.create(origin='Swallow C', load=5, speed=5)
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
data = {
'form-TOTAL_FORMS': '3',
'form-INITIAL_FORMS': '3',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-1-uuid': str(b.pk),
'form-2-uuid': str(c.pk),
'form-0-load': '9.0',
'form-0-speed': '9.0',
'form-1-load': '5.0',
'form-1-speed': '5.0',
'form-2-load': '5.0',
'form-2-speed': '4.0',
'_save': 'Save',
}
request = self.factory.post(changelist_url, data=data)
pks = m._get_edited_object_pks(request, prefix='form')
self.assertEqual(sorted(pks), sorted([str(a.pk), str(b.pk), str(c.pk)]))
def test_get_list_editable_queryset(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '2',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form')
self.assertEqual(queryset.count(), 1)
data['form-0-uuid'] = 'INVALD_PRIMARY_KEY'
# The unfiltered queryset is returned if there's invalid data.
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form')
self.assertEqual(queryset.count(), 2)
def test_get_list_editable_queryset_with_regex_chars_in_prefix(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form$-TOTAL_FORMS': '2',
'form$-INITIAL_FORMS': '2',
'form$-MIN_NUM_FORMS': '0',
'form$-MAX_NUM_FORMS': '1000',
'form$-0-uuid': str(a.pk),
'form$-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form$')
self.assertEqual(queryset.count(), 1)
def test_changelist_view_list_editable_changed_objects_uses_filter(self):
"""list_editable edits use a filtered queryset to limit memory usage."""
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '2',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
with CaptureQueriesContext(connection) as context:
response = self.client.post(changelist_url, data=data)
self.assertEqual(response.status_code, 200)
self.assertIn('WHERE', context.captured_queries[4]['sql'])
self.assertIn('IN', context.captured_queries[4]['sql'])
# Check only the first few characters since the UUID may have dashes.
self.assertIn(str(a.pk)[:8], context.captured_queries[4]['sql'])
def test_deterministic_order_for_unordered_model(self):
"""
The primary key is used in the ordering of the changelist's results to
guarantee a deterministic order, even when the model doesn't have any
default ordering defined (#17198).
"""
superuser = self._create_superuser('superuser')
for counter in range(1, 51):
UnorderedObject.objects.create(id=counter, bool=True)
class UnorderedObjectAdmin(admin.ModelAdmin):
list_per_page = 10
def check_results_order(ascending=False):
custom_site.register(UnorderedObject, UnorderedObjectAdmin)
model_admin = UnorderedObjectAdmin(UnorderedObject, custom_site)
counter = 0 if ascending else 51
for page in range(1, 6):
request = self._mocked_authenticated_request('/unorderedobject/?p=%s' % page, superuser)
response = model_admin.changelist_view(request)
for result in response.context_data['cl'].result_list:
counter += 1 if ascending else -1
self.assertEqual(result.id, counter)
custom_site.unregister(UnorderedObject)
# When no order is defined at all, everything is ordered by '-pk'.
check_results_order()
# When an order field is defined but multiple records have the same
# value for that field, make sure everything gets ordered by -pk as well.
UnorderedObjectAdmin.ordering = ['bool']
check_results_order()
# When order fields are defined, including the pk itself, use them.
UnorderedObjectAdmin.ordering = ['bool', '-pk']
check_results_order()
UnorderedObjectAdmin.ordering = ['bool', 'pk']
check_results_order(ascending=True)
UnorderedObjectAdmin.ordering = ['-id', 'bool']
check_results_order()
UnorderedObjectAdmin.ordering = ['id', 'bool']
check_results_order(ascending=True)
def test_deterministic_order_for_model_ordered_by_its_manager(self):
"""
The primary key is used in the ordering of the changelist's results to
guarantee a deterministic order, even when the model has a manager that
defines a default ordering (#17198).
"""
superuser = self._create_superuser('superuser')
for counter in range(1, 51):
OrderedObject.objects.create(id=counter, bool=True, number=counter)
class OrderedObjectAdmin(admin.ModelAdmin):
list_per_page = 10
def check_results_order(ascending=False):
custom_site.register(OrderedObject, OrderedObjectAdmin)
model_admin = OrderedObjectAdmin(OrderedObject, custom_site)
counter = 0 if ascending else 51
for page in range(1, 6):
request = self._mocked_authenticated_request('/orderedobject/?p=%s' % page, superuser)
response = model_admin.changelist_view(request)
for result in response.context_data['cl'].result_list:
counter += 1 if ascending else -1
self.assertEqual(result.id, counter)
custom_site.unregister(OrderedObject)
# When no order is defined at all, use the model's default ordering (i.e. 'number')
check_results_order(ascending=True)
# When an order field is defined but multiple records have the same
# value for that field, make sure everything gets ordered by -pk as well.
OrderedObjectAdmin.ordering = ['bool']
check_results_order()
# When order fields are defined, including the pk itself, use them.
OrderedObjectAdmin.ordering = ['bool', '-pk']
check_results_order()
OrderedObjectAdmin.ordering = ['bool', 'pk']
check_results_order(ascending=True)
OrderedObjectAdmin.ordering = ['-id', 'bool']
check_results_order()
OrderedObjectAdmin.ordering = ['id', 'bool']
check_results_order(ascending=True)
@isolate_apps('admin_changelist')
def test_total_ordering_optimization(self):
class Related(models.Model):
unique_field = models.BooleanField(unique=True)
class Meta:
ordering = ('unique_field',)
class Model(models.Model):
unique_field = models.BooleanField(unique=True)
unique_nullable_field = models.BooleanField(unique=True, null=True)
related = models.ForeignKey(Related, models.CASCADE)
other_related = models.ForeignKey(Related, models.CASCADE)
related_unique = models.OneToOneField(Related, models.CASCADE)
field = models.BooleanField()
other_field = models.BooleanField()
null_field = models.BooleanField(null=True)
class Meta:
unique_together = {
('field', 'other_field'),
('field', 'null_field'),
('related', 'other_related_id'),
}
class ModelAdmin(admin.ModelAdmin):
def get_queryset(self, request):
return Model.objects.none()
request = self._mocked_authenticated_request('/', self.superuser)
site = admin.AdminSite(name='admin')
model_admin = ModelAdmin(Model, site)
change_list = model_admin.get_changelist_instance(request)
tests = (
([], ['-pk']),
# Unique non-nullable field.
(['unique_field'], ['unique_field']),
(['-unique_field'], ['-unique_field']),
# Unique nullable field.
(['unique_nullable_field'], ['unique_nullable_field', '-pk']),
# Field.
(['field'], ['field', '-pk']),
# Related field introspection is not implemented.
(['related__unique_field'], ['related__unique_field', '-pk']),
# Related attname unique.
(['related_unique_id'], ['related_unique_id']),
# Related ordering introspection is not implemented.
(['related_unique'], ['related_unique', '-pk']),
# Composite unique.
(['field', '-other_field'], ['field', '-other_field']),
# Composite unique nullable.
(['-field', 'null_field'], ['-field', 'null_field', '-pk']),
# Composite unique and nullable.
(['-field', 'null_field', 'other_field'], ['-field', 'null_field', 'other_field']),
# Composite unique attnames.
(['related_id', '-other_related_id'], ['related_id', '-other_related_id']),
# Composite unique names.
(['related', '-other_related_id'], ['related', '-other_related_id', '-pk']),
)
# F() objects composite unique.
total_ordering = [F('field'), F('other_field').desc(nulls_last=True)]
# F() objects composite unique nullable.
non_total_ordering = [F('field'), F('null_field').desc(nulls_last=True)]
tests += (
(total_ordering, total_ordering),
(non_total_ordering, non_total_ordering + ['-pk']),
)
for ordering, expected in tests:
with self.subTest(ordering=ordering):
self.assertEqual(change_list._get_deterministic_ordering(ordering), expected)
@isolate_apps('admin_changelist')
def test_total_ordering_optimization_meta_constraints(self):
class Related(models.Model):
unique_field = models.BooleanField(unique=True)
class Meta:
ordering = ('unique_field',)
class Model(models.Model):
field_1 = models.BooleanField()
field_2 = models.BooleanField()
field_3 = models.BooleanField()
field_4 = models.BooleanField()
field_5 = models.BooleanField()
field_6 = models.BooleanField()
nullable_1 = models.BooleanField(null=True)
nullable_2 = models.BooleanField(null=True)
related_1 = models.ForeignKey(Related, models.CASCADE)
related_2 = models.ForeignKey(Related, models.CASCADE)
related_3 = models.ForeignKey(Related, models.CASCADE)
related_4 = models.ForeignKey(Related, models.CASCADE)
class Meta:
constraints = [
*[
models.UniqueConstraint(fields=fields, name=''.join(fields))
for fields in (
['field_1'],
['nullable_1'],
['related_1'],
['related_2_id'],
['field_2', 'field_3'],
['field_2', 'nullable_2'],
['field_2', 'related_3'],
['field_3', 'related_4_id'],
)
],
models.CheckConstraint(check=models.Q(id__gt=0), name='foo'),
models.UniqueConstraint(
fields=['field_5'],
condition=models.Q(id__gt=10),
name='total_ordering_1',
),
models.UniqueConstraint(
fields=['field_6'],
condition=models.Q(),
name='total_ordering',
),
]
class ModelAdmin(admin.ModelAdmin):
def get_queryset(self, request):
return Model.objects.none()
request = self._mocked_authenticated_request('/', self.superuser)
site = admin.AdminSite(name='admin')
model_admin = ModelAdmin(Model, site)
change_list = model_admin.get_changelist_instance(request)
tests = (
# Unique non-nullable field.
(['field_1'], ['field_1']),
# Unique nullable field.
(['nullable_1'], ['nullable_1', '-pk']),
# Related attname unique.
(['related_1_id'], ['related_1_id']),
(['related_2_id'], ['related_2_id']),
# Related ordering introspection is not implemented.
(['related_1'], ['related_1', '-pk']),
# Composite unique.
(['-field_2', 'field_3'], ['-field_2', 'field_3']),
# Composite unique nullable.
(['field_2', '-nullable_2'], ['field_2', '-nullable_2', '-pk']),
# Composite unique and nullable.
(
['field_2', '-nullable_2', 'field_3'],
['field_2', '-nullable_2', 'field_3'],
),
# Composite field and related field name.
(['field_2', '-related_3'], ['field_2', '-related_3', '-pk']),
(['field_3', 'related_4'], ['field_3', 'related_4', '-pk']),
# Composite field and related field attname.
(['field_2', 'related_3_id'], ['field_2', 'related_3_id']),
(['field_3', '-related_4_id'], ['field_3', '-related_4_id']),
# Partial unique constraint is ignored.
(['field_5'], ['field_5', '-pk']),
# Unique constraint with an empty condition.
(['field_6'], ['field_6']),
)
for ordering, expected in tests:
with self.subTest(ordering=ordering):
self.assertEqual(change_list._get_deterministic_ordering(ordering), expected)
def test_dynamic_list_filter(self):
"""
Regression tests for ticket #17646: dynamic list_filter support.
"""
parent = Parent.objects.create(name='parent')
for i in range(10):
Child.objects.create(name='child %s' % i, parent=parent)
user_noparents = self._create_superuser('noparents')
user_parents = self._create_superuser('parents')
# Test with user 'noparents'
m = DynamicListFilterChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].list_filter, ['name', 'age'])
# Test with user 'parents'
m = DynamicListFilterChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_parents)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].list_filter, ('parent', 'name', 'age'))
def test_dynamic_search_fields(self):
child = self._create_superuser('child')
m = DynamicSearchFieldsChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', child)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].search_fields, ('name', 'age'))
def test_pagination_page_range(self):
"""
Regression tests for ticket #15653: ensure the number of pages
generated for changelist views are correct.
"""
# instantiating and setting up ChangeList object
m = GroupAdmin(Group, custom_site)
request = self.factory.get('/group/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.list_per_page = 10
ELLIPSIS = cl.paginator.ELLIPSIS
for number, pages, expected in [
(1, 1, []),
(1, 2, [1, 2]),
(6, 11, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]),
(6, 12, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
(6, 13, [1, 2, 3, 4, 5, 6, 7, 8, 9, ELLIPSIS, 12, 13]),
(7, 12, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
(7, 13, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]),
(7, 14, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ELLIPSIS, 13, 14]),
(8, 13, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, 12, 13]),
(8, 14, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]),
(8, 15, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, ELLIPSIS, 14, 15]),
]:
with self.subTest(number=number, pages=pages):
# assuming exactly `pages * cl.list_per_page` objects
Group.objects.all().delete()
for i in range(pages * cl.list_per_page):
Group.objects.create(name='test band')
# setting page number and calculating page range
cl.page_num = number
cl.get_results(request)
self.assertEqual(list(pagination(cl)['page_range']), expected)
def test_object_tools_displayed_no_add_permission(self):
"""
When ModelAdmin.has_add_permission() returns False, the object-tools
block is still shown.
"""
superuser = self._create_superuser('superuser')
m = EventAdmin(Event, custom_site)
request = self._mocked_authenticated_request('/event/', superuser)
self.assertFalse(m.has_add_permission(request))
response = m.changelist_view(request)
self.assertIn('<ul class="object-tools">', response.rendered_content)
# The "Add" button inside the object-tools shouldn't appear.
self.assertNotIn('Add ', response.rendered_content)
def test_search_help_text(self):
superuser = self._create_superuser('superuser')
m = BandAdmin(Band, custom_site)
# search_fields without search_help_text.
m.search_fields = ['name']
request = self._mocked_authenticated_request('/band/', superuser)
response = m.changelist_view(request)
self.assertIsNone(response.context_data['cl'].search_help_text)
self.assertNotContains(response, '<div class="help">')
# search_fields with search_help_text.
m.search_help_text = 'Search help text'
request = self._mocked_authenticated_request('/band/', superuser)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].search_help_text, 'Search help text')
self.assertContains(response, '<div class="help">Search help text</div>')
class GetAdminLogTests(TestCase):
def test_custom_user_pk_not_named_id(self):
"""
{% get_admin_log %} works if the user model's primary key isn't named
'id'.
"""
context = Context({'user': CustomIdUser()})
template = Template('{% load log %}{% get_admin_log 10 as admin_log for_user user %}')
# This template tag just logs.
self.assertEqual(template.render(context), '')
def test_no_user(self):
"""{% get_admin_log %} works without specifying a user."""
user = User(username='jondoe', password='secret', email='[email protected]')
user.save()
ct = ContentType.objects.get_for_model(User)
LogEntry.objects.log_action(user.pk, ct.pk, user.pk, repr(user), 1)
t = Template(
'{% load log %}'
'{% get_admin_log 100 as admin_log %}'
'{% for entry in admin_log %}'
'{{ entry|safe }}'
'{% endfor %}'
)
self.assertEqual(t.render(Context({})), 'Added “<User: jondoe>”.')
def test_missing_args(self):
msg = "'get_admin_log' statements require two arguments"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 as %}')
def test_non_integer_limit(self):
msg = "First argument to 'get_admin_log' must be an integer"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log "10" as admin_log for_user user %}')
def test_without_as(self):
msg = "Second argument to 'get_admin_log' must be 'as'"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 ad admin_log for_user user %}')
def test_without_for_user(self):
msg = "Fourth argument to 'get_admin_log' must be 'for_user'"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 as admin_log foruser user %}')
@override_settings(ROOT_URLCONF='admin_changelist.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_changelist'] + AdminSeleniumTestCase.available_apps
def setUp(self):
User.objects.create_superuser(username='super', password='secret', email=None)
def test_add_row_selection(self):
"""
The status line for selected rows gets updated correctly (#22038).
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:auth_user_changelist'))
form_id = '#changelist-form'
# Test amount of rows in the Changelist
rows = self.selenium.find_elements(
By.CSS_SELECTOR,
'%s #result_list tbody tr' % form_id
)
self.assertEqual(len(rows), 1)
row = rows[0]
selection_indicator = self.selenium.find_element(
By.CSS_SELECTOR,
'%s .action-counter' % form_id
)
all_selector = self.selenium.find_element(By.ID, 'action-toggle')
row_selector = self.selenium.find_element(
By.CSS_SELECTOR,
'%s #result_list tbody tr:first-child .action-select' % form_id
)
# Test current selection
self.assertEqual(selection_indicator.text, "0 of 1 selected")
self.assertIs(all_selector.get_property('checked'), False)
self.assertEqual(row.get_attribute('class'), '')
# Select a row and check again
row_selector.click()
self.assertEqual(selection_indicator.text, "1 of 1 selected")
self.assertIs(all_selector.get_property('checked'), True)
self.assertEqual(row.get_attribute('class'), 'selected')
# Deselect a row and check again
row_selector.click()
self.assertEqual(selection_indicator.text, "0 of 1 selected")
self.assertIs(all_selector.get_property('checked'), False)
self.assertEqual(row.get_attribute('class'), '')
def test_modifier_allows_multiple_section(self):
"""
Selecting a row and then selecting another row whilst holding shift
should select all rows in-between.
"""
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
Parent.objects.bulk_create([Parent(name='parent%d' % i) for i in range(5)])
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
checkboxes = self.selenium.find_elements(By.CSS_SELECTOR, 'tr input.action-select')
self.assertEqual(len(checkboxes), 5)
for c in checkboxes:
self.assertIs(c.get_property('checked'), False)
# Check first row. Hold-shift and check next-to-last row.
checkboxes[0].click()
ActionChains(self.selenium).key_down(Keys.SHIFT).click(checkboxes[-2]).key_up(Keys.SHIFT).perform()
for c in checkboxes[:-2]:
self.assertIs(c.get_property('checked'), True)
self.assertIs(checkboxes[-1].get_property('checked'), False)
def test_select_all_across_pages(self):
from selenium.webdriver.common.by import By
Parent.objects.bulk_create([Parent(name='parent%d' % i) for i in range(101)])
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
selection_indicator = self.selenium.find_element(By.CSS_SELECTOR, '.action-counter')
select_all_indicator = self.selenium.find_element(By.CSS_SELECTOR, '.actions .all')
question = self.selenium.find_element(By.CSS_SELECTOR, '.actions > .question')
clear = self.selenium.find_element(By.CSS_SELECTOR, '.actions > .clear')
select_all = self.selenium.find_element(By.ID, 'action-toggle')
select_across = self.selenium.find_elements(By.NAME, 'select_across')
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), False)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '0 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
select_all.click()
self.assertIs(question.is_displayed(), True)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), True)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '100 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
question.click()
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), True)
self.assertIs(select_all.get_property('checked'), True)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '1')
self.assertIs(selection_indicator.is_displayed(), False)
self.assertIs(select_all_indicator.is_displayed(), True)
clear.click()
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), False)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '0 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
def test_actions_warn_on_pending_edits(self):
from selenium.webdriver.common.by import By
Parent.objects.create(name='foo')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
name_input = self.selenium.find_element(By.ID, 'id_form-0-name')
name_input.clear()
name_input.send_keys('bar')
self.selenium.find_element(By.ID, 'action-toggle').click()
self.selenium.find_element(By.NAME, 'index').click() # Go
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have unsaved changes on individual editable fields. If you '
'run an action, your unsaved changes will be lost.'
)
finally:
alert.dismiss()
def test_save_with_changes_warns_on_pending_action(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
Parent.objects.create(name='parent')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
name_input = self.selenium.find_element(By.ID, 'id_form-0-name')
name_input.clear()
name_input.send_keys('other name')
Select(
self.selenium.find_element(By.NAME, 'action')
).select_by_value('delete_selected')
self.selenium.find_element(By.NAME, '_save').click()
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have selected an action, but you haven’t saved your '
'changes to individual fields yet. Please click OK to save. '
'You’ll need to re-run the action.',
)
finally:
alert.dismiss()
def test_save_without_changes_warns_on_pending_action(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
Parent.objects.create(name='parent')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
Select(
self.selenium.find_element(By.NAME, 'action')
).select_by_value('delete_selected')
self.selenium.find_element(By.NAME, '_save').click()
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have selected an action, and you haven’t made any '
'changes on individual fields. You’re probably looking for '
'the Go button rather than the Save button.',
)
finally:
alert.dismiss()
|
79847db7578af8773d3104dc96288274a39be01df7ad5eac210b01a9f33e20b1 | import gettext
import os
import re
from datetime import datetime, timedelta
from importlib import import_module
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
from django import forms
from django.conf import settings
from django.contrib import admin
from django.contrib.admin import widgets
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.auth.models import User
from django.core.files.storage import default_storage
from django.core.files.uploadedfile import SimpleUploadedFile
from django.db.models import (
CharField, DateField, DateTimeField, ManyToManyField, UUIDField,
)
from django.test import SimpleTestCase, TestCase, override_settings
from django.urls import reverse
from django.utils import translation
from .models import (
Advisor, Album, Band, Bee, Car, Company, Event, Honeycomb, Individual,
Inventory, Member, MyFileField, Profile, School, Student,
UnsafeLimitChoicesTo, VideoStream,
)
from .widgetadmin import site as widget_admin_site
class TestDataMixin:
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email=None)
cls.u2 = User.objects.create_user(username='testser', password='secret')
Car.objects.create(owner=cls.superuser, make='Volkswagen', model='Passat')
Car.objects.create(owner=cls.u2, make='BMW', model='M3')
class AdminFormfieldForDBFieldTests(SimpleTestCase):
"""
Tests for correct behavior of ModelAdmin.formfield_for_dbfield
"""
def assertFormfield(self, model, fieldname, widgetclass, **admin_overrides):
"""
Helper to call formfield_for_dbfield for a given model and field name
and verify that the returned formfield is appropriate.
"""
# Override any settings on the model admin
class MyModelAdmin(admin.ModelAdmin):
pass
for k in admin_overrides:
setattr(MyModelAdmin, k, admin_overrides[k])
# Construct the admin, and ask it for a formfield
ma = MyModelAdmin(model, admin.site)
ff = ma.formfield_for_dbfield(model._meta.get_field(fieldname), request=None)
# "unwrap" the widget wrapper, if needed
if isinstance(ff.widget, widgets.RelatedFieldWidgetWrapper):
widget = ff.widget.widget
else:
widget = ff.widget
self.assertIsInstance(widget, widgetclass)
# Return the formfield so that other tests can continue
return ff
def test_DateField(self):
self.assertFormfield(Event, 'start_date', widgets.AdminDateWidget)
def test_DateTimeField(self):
self.assertFormfield(Member, 'birthdate', widgets.AdminSplitDateTime)
def test_TimeField(self):
self.assertFormfield(Event, 'start_time', widgets.AdminTimeWidget)
def test_TextField(self):
self.assertFormfield(Event, 'description', widgets.AdminTextareaWidget)
def test_URLField(self):
self.assertFormfield(Event, 'link', widgets.AdminURLFieldWidget)
def test_IntegerField(self):
self.assertFormfield(Event, 'min_age', widgets.AdminIntegerFieldWidget)
def test_CharField(self):
self.assertFormfield(Member, 'name', widgets.AdminTextInputWidget)
def test_EmailField(self):
self.assertFormfield(Member, 'email', widgets.AdminEmailInputWidget)
def test_FileField(self):
self.assertFormfield(Album, 'cover_art', widgets.AdminFileWidget)
def test_ForeignKey(self):
self.assertFormfield(Event, 'main_band', forms.Select)
def test_raw_id_ForeignKey(self):
self.assertFormfield(Event, 'main_band', widgets.ForeignKeyRawIdWidget,
raw_id_fields=['main_band'])
def test_radio_fields_ForeignKey(self):
ff = self.assertFormfield(Event, 'main_band', widgets.AdminRadioSelect,
radio_fields={'main_band': admin.VERTICAL})
self.assertIsNone(ff.empty_label)
def test_many_to_many(self):
self.assertFormfield(Band, 'members', forms.SelectMultiple)
def test_raw_id_many_to_many(self):
self.assertFormfield(Band, 'members', widgets.ManyToManyRawIdWidget,
raw_id_fields=['members'])
def test_filtered_many_to_many(self):
self.assertFormfield(Band, 'members', widgets.FilteredSelectMultiple,
filter_vertical=['members'])
def test_formfield_overrides(self):
self.assertFormfield(Event, 'start_date', forms.TextInput,
formfield_overrides={DateField: {'widget': forms.TextInput}})
def test_formfield_overrides_widget_instances(self):
"""
Widget instances in formfield_overrides are not shared between
different fields. (#19423)
"""
class BandAdmin(admin.ModelAdmin):
formfield_overrides = {
CharField: {'widget': forms.TextInput(attrs={'size': '10'})}
}
ma = BandAdmin(Band, admin.site)
f1 = ma.formfield_for_dbfield(Band._meta.get_field('name'), request=None)
f2 = ma.formfield_for_dbfield(Band._meta.get_field('style'), request=None)
self.assertNotEqual(f1.widget, f2.widget)
self.assertEqual(f1.widget.attrs['maxlength'], '100')
self.assertEqual(f2.widget.attrs['maxlength'], '20')
self.assertEqual(f2.widget.attrs['size'], '10')
def test_formfield_overrides_m2m_filter_widget(self):
"""
The autocomplete_fields, raw_id_fields, filter_vertical, and
filter_horizontal widgets for ManyToManyFields may be overridden by
specifying a widget in formfield_overrides.
"""
class BandAdmin(admin.ModelAdmin):
filter_vertical = ['members']
formfield_overrides = {
ManyToManyField: {'widget': forms.CheckboxSelectMultiple},
}
ma = BandAdmin(Band, admin.site)
field = ma.formfield_for_dbfield(Band._meta.get_field('members'), request=None)
self.assertIsInstance(field.widget.widget, forms.CheckboxSelectMultiple)
def test_formfield_overrides_for_datetime_field(self):
"""
Overriding the widget for DateTimeField doesn't overrides the default
form_class for that field (#26449).
"""
class MemberAdmin(admin.ModelAdmin):
formfield_overrides = {DateTimeField: {'widget': widgets.AdminSplitDateTime}}
ma = MemberAdmin(Member, admin.site)
f1 = ma.formfield_for_dbfield(Member._meta.get_field('birthdate'), request=None)
self.assertIsInstance(f1.widget, widgets.AdminSplitDateTime)
self.assertIsInstance(f1, forms.SplitDateTimeField)
def test_formfield_overrides_for_custom_field(self):
"""
formfield_overrides works for a custom field class.
"""
class AlbumAdmin(admin.ModelAdmin):
formfield_overrides = {MyFileField: {'widget': forms.TextInput()}}
ma = AlbumAdmin(Member, admin.site)
f1 = ma.formfield_for_dbfield(Album._meta.get_field('backside_art'), request=None)
self.assertIsInstance(f1.widget, forms.TextInput)
def test_field_with_choices(self):
self.assertFormfield(Member, 'gender', forms.Select)
def test_choices_with_radio_fields(self):
self.assertFormfield(Member, 'gender', widgets.AdminRadioSelect,
radio_fields={'gender': admin.VERTICAL})
def test_inheritance(self):
self.assertFormfield(Album, 'backside_art', widgets.AdminFileWidget)
def test_m2m_widgets(self):
"""m2m fields help text as it applies to admin app (#9321)."""
class AdvisorAdmin(admin.ModelAdmin):
filter_vertical = ['companies']
self.assertFormfield(Advisor, 'companies', widgets.FilteredSelectMultiple,
filter_vertical=['companies'])
ma = AdvisorAdmin(Advisor, admin.site)
f = ma.formfield_for_dbfield(Advisor._meta.get_field('companies'), request=None)
self.assertEqual(
f.help_text,
'Hold down “Control”, or “Command” on a Mac, to select more than one.'
)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class AdminFormfieldForDBFieldWithRequestTests(TestDataMixin, TestCase):
def test_filter_choices_by_request_user(self):
"""
Ensure the user can only see their own cars in the foreign key dropdown.
"""
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin:admin_widgets_cartire_add'))
self.assertNotContains(response, "BMW M3")
self.assertContains(response, "Volkswagen Passat")
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class AdminForeignKeyWidgetChangeList(TestDataMixin, TestCase):
def setUp(self):
self.client.force_login(self.superuser)
def test_changelist_ForeignKey(self):
response = self.client.get(reverse('admin:admin_widgets_car_changelist'))
self.assertContains(response, '/auth/user/add/')
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class AdminForeignKeyRawIdWidget(TestDataMixin, TestCase):
def setUp(self):
self.client.force_login(self.superuser)
def test_nonexistent_target_id(self):
band = Band.objects.create(name='Bogey Blues')
pk = band.pk
band.delete()
post_data = {
"main_band": str(pk),
}
# Try posting with a nonexistent pk in a raw id field: this
# should result in an error message, not a server exception.
response = self.client.post(reverse('admin:admin_widgets_event_add'), post_data)
self.assertContains(response, 'Select a valid choice. That choice is not one of the available choices.')
def test_invalid_target_id(self):
for test_str in ('Iñtërnâtiônàlizætiøn', "1234'", -1234):
# This should result in an error message, not a server exception.
response = self.client.post(reverse('admin:admin_widgets_event_add'), {"main_band": test_str})
self.assertContains(response, 'Select a valid choice. That choice is not one of the available choices.')
def test_url_params_from_lookup_dict_any_iterable(self):
lookup1 = widgets.url_params_from_lookup_dict({'color__in': ('red', 'blue')})
lookup2 = widgets.url_params_from_lookup_dict({'color__in': ['red', 'blue']})
self.assertEqual(lookup1, {'color__in': 'red,blue'})
self.assertEqual(lookup1, lookup2)
def test_url_params_from_lookup_dict_callable(self):
def my_callable():
return 'works'
lookup1 = widgets.url_params_from_lookup_dict({'myfield': my_callable})
lookup2 = widgets.url_params_from_lookup_dict({'myfield': my_callable()})
self.assertEqual(lookup1, lookup2)
def test_label_and_url_for_value_invalid_uuid(self):
field = Bee._meta.get_field('honeycomb')
self.assertIsInstance(field.target_field, UUIDField)
widget = widgets.ForeignKeyRawIdWidget(field.remote_field, admin.site)
self.assertEqual(widget.label_and_url_for_value('invalid-uuid'), ('', ''))
class FilteredSelectMultipleWidgetTest(SimpleTestCase):
def test_render(self):
# Backslash in verbose_name to ensure it is JavaScript escaped.
w = widgets.FilteredSelectMultiple('test\\', False)
self.assertHTMLEqual(
w.render('test', 'test'),
'<select multiple name="test" class="selectfilter" '
'data-field-name="test\\" data-is-stacked="0">\n</select>'
)
def test_stacked_render(self):
# Backslash in verbose_name to ensure it is JavaScript escaped.
w = widgets.FilteredSelectMultiple('test\\', True)
self.assertHTMLEqual(
w.render('test', 'test'),
'<select multiple name="test" class="selectfilterstacked" '
'data-field-name="test\\" data-is-stacked="1">\n</select>'
)
class AdminDateWidgetTest(SimpleTestCase):
def test_attrs(self):
w = widgets.AdminDateWidget()
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<input value="2007-12-01" type="text" class="vDateField" name="test" size="10">',
)
# pass attrs to widget
w = widgets.AdminDateWidget(attrs={'size': 20, 'class': 'myDateField'})
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<input value="2007-12-01" type="text" class="myDateField" name="test" size="20">',
)
class AdminTimeWidgetTest(SimpleTestCase):
def test_attrs(self):
w = widgets.AdminTimeWidget()
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<input value="09:30:00" type="text" class="vTimeField" name="test" size="8">',
)
# pass attrs to widget
w = widgets.AdminTimeWidget(attrs={'size': 20, 'class': 'myTimeField'})
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<input value="09:30:00" type="text" class="myTimeField" name="test" size="20">',
)
class AdminSplitDateTimeWidgetTest(SimpleTestCase):
def test_render(self):
w = widgets.AdminSplitDateTime()
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<p class="datetime">'
'Date: <input value="2007-12-01" type="text" class="vDateField" '
'name="test_0" size="10"><br>'
'Time: <input value="09:30:00" type="text" class="vTimeField" '
'name="test_1" size="8"></p>'
)
def test_localization(self):
w = widgets.AdminSplitDateTime()
with translation.override('de-at'):
w.is_localized = True
self.assertHTMLEqual(
w.render('test', datetime(2007, 12, 1, 9, 30)),
'<p class="datetime">'
'Datum: <input value="01.12.2007" type="text" '
'class="vDateField" name="test_0"size="10"><br>'
'Zeit: <input value="09:30:00" type="text" class="vTimeField" '
'name="test_1" size="8"></p>'
)
class AdminURLWidgetTest(SimpleTestCase):
def test_get_context_validates_url(self):
w = widgets.AdminURLFieldWidget()
for invalid in ['', '/not/a/full/url/', 'javascript:alert("Danger XSS!")']:
with self.subTest(url=invalid):
self.assertFalse(w.get_context('name', invalid, {})['url_valid'])
self.assertTrue(w.get_context('name', 'http://example.com', {})['url_valid'])
def test_render(self):
w = widgets.AdminURLFieldWidget()
self.assertHTMLEqual(
w.render('test', ''),
'<input class="vURLField" name="test" type="url">'
)
self.assertHTMLEqual(
w.render('test', 'http://example.com'),
'<p class="url">Currently:<a href="http://example.com">'
'http://example.com</a><br>'
'Change:<input class="vURLField" name="test" type="url" '
'value="http://example.com"></p>'
)
def test_render_idn(self):
w = widgets.AdminURLFieldWidget()
self.assertHTMLEqual(
w.render('test', 'http://example-äüö.com'),
'<p class="url">Currently: <a href="http://xn--example--7za4pnc.com">'
'http://example-äüö.com</a><br>'
'Change:<input class="vURLField" name="test" type="url" '
'value="http://example-äüö.com"></p>'
)
def test_render_quoting(self):
"""
WARNING: This test doesn't use assertHTMLEqual since it will get rid
of some escapes which are tested here!
"""
HREF_RE = re.compile('href="([^"]+)"')
VALUE_RE = re.compile('value="([^"]+)"')
TEXT_RE = re.compile('<a[^>]+>([^>]+)</a>')
w = widgets.AdminURLFieldWidget()
output = w.render('test', 'http://example.com/<sometag>some-text</sometag>')
self.assertEqual(
HREF_RE.search(output)[1],
'http://example.com/%3Csometag%3Esome-text%3C/sometag%3E',
)
self.assertEqual(
TEXT_RE.search(output)[1],
'http://example.com/<sometag>some-text</sometag>',
)
self.assertEqual(
VALUE_RE.search(output)[1],
'http://example.com/<sometag>some-text</sometag>',
)
output = w.render('test', 'http://example-äüö.com/<sometag>some-text</sometag>')
self.assertEqual(
HREF_RE.search(output)[1],
'http://xn--example--7za4pnc.com/%3Csometag%3Esome-text%3C/sometag%3E',
)
self.assertEqual(
TEXT_RE.search(output)[1],
'http://example-äüö.com/<sometag>some-text</sometag>',
)
self.assertEqual(
VALUE_RE.search(output)[1],
'http://example-äüö.com/<sometag>some-text</sometag>',
)
output = w.render('test', 'http://www.example.com/%C3%A4"><script>alert("XSS!")</script>"')
self.assertEqual(
HREF_RE.search(output)[1],
'http://www.example.com/%C3%A4%22%3E%3Cscript%3Ealert(%22XSS!%22)%3C/script%3E%22',
)
self.assertEqual(
TEXT_RE.search(output)[1],
'http://www.example.com/%C3%A4"><script>'
'alert("XSS!")</script>"'
)
self.assertEqual(
VALUE_RE.search(output)[1],
'http://www.example.com/%C3%A4"><script>alert("XSS!")</script>"',
)
class AdminUUIDWidgetTests(SimpleTestCase):
def test_attrs(self):
w = widgets.AdminUUIDInputWidget()
self.assertHTMLEqual(
w.render('test', '550e8400-e29b-41d4-a716-446655440000'),
'<input value="550e8400-e29b-41d4-a716-446655440000" type="text" class="vUUIDField" name="test">',
)
w = widgets.AdminUUIDInputWidget(attrs={'class': 'myUUIDInput'})
self.assertHTMLEqual(
w.render('test', '550e8400-e29b-41d4-a716-446655440000'),
'<input value="550e8400-e29b-41d4-a716-446655440000" type="text" class="myUUIDInput" name="test">',
)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class AdminFileWidgetTests(TestDataMixin, TestCase):
@classmethod
def setUpTestData(cls):
super().setUpTestData()
band = Band.objects.create(name='Linkin Park')
cls.album = band.album_set.create(
name='Hybrid Theory', cover_art=r'albums\hybrid_theory.jpg'
)
def test_render(self):
w = widgets.AdminFileWidget()
self.assertHTMLEqual(
w.render('test', self.album.cover_art),
'<p class="file-upload">Currently: <a href="%(STORAGE_URL)salbums/'
r'hybrid_theory.jpg">albums\hybrid_theory.jpg</a> '
'<span class="clearable-file-input">'
'<input type="checkbox" name="test-clear" id="test-clear_id"> '
'<label for="test-clear_id">Clear</label></span><br>'
'Change: <input type="file" name="test"></p>' % {
'STORAGE_URL': default_storage.url(''),
},
)
self.assertHTMLEqual(
w.render('test', SimpleUploadedFile('test', b'content')),
'<input type="file" name="test">',
)
def test_render_required(self):
widget = widgets.AdminFileWidget()
widget.is_required = True
self.assertHTMLEqual(
widget.render('test', self.album.cover_art),
'<p class="file-upload">Currently: <a href="%(STORAGE_URL)salbums/'
r'hybrid_theory.jpg">albums\hybrid_theory.jpg</a><br>'
'Change: <input type="file" name="test"></p>' % {
'STORAGE_URL': default_storage.url(''),
},
)
def test_render_disabled(self):
widget = widgets.AdminFileWidget(attrs={'disabled': True})
self.assertHTMLEqual(
widget.render('test', self.album.cover_art),
'<p class="file-upload">Currently: <a href="%(STORAGE_URL)salbums/'
r'hybrid_theory.jpg">albums\hybrid_theory.jpg</a> '
'<span class="clearable-file-input">'
'<input type="checkbox" name="test-clear" id="test-clear_id" disabled>'
'<label for="test-clear_id">Clear</label></span><br>'
'Change: <input type="file" name="test" disabled></p>' % {
'STORAGE_URL': default_storage.url(''),
},
)
def test_readonly_fields(self):
"""
File widgets should render as a link when they're marked "read only."
"""
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin:admin_widgets_album_change', args=(self.album.id,)))
self.assertContains(
response,
'<div class="readonly"><a href="%(STORAGE_URL)salbums/hybrid_theory.jpg">'
r'albums\hybrid_theory.jpg</a></div>' % {'STORAGE_URL': default_storage.url('')},
html=True,
)
self.assertNotContains(
response,
'<input type="file" name="cover_art" id="id_cover_art">',
html=True,
)
response = self.client.get(reverse('admin:admin_widgets_album_add'))
self.assertContains(
response,
'<div class="readonly"></div>',
html=True,
)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class ForeignKeyRawIdWidgetTest(TestCase):
def test_render(self):
band = Band.objects.create(name='Linkin Park')
band.album_set.create(
name='Hybrid Theory', cover_art=r'albums\hybrid_theory.jpg'
)
rel = Album._meta.get_field('band').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('test', band.uuid, attrs={}),
'<input type="text" name="test" value="%(banduuid)s" '
'class="vForeignKeyRawIdAdminField">'
'<a href="/admin_widgets/band/?_to_field=uuid" class="related-lookup" '
'id="lookup_id_test" title="Lookup"></a> <strong>'
'<a href="/admin_widgets/band/%(bandpk)s/change/">Linkin Park</a>'
'</strong>' % {'banduuid': band.uuid, 'bandpk': band.pk}
)
def test_relations_to_non_primary_key(self):
# ForeignKeyRawIdWidget works with fields which aren't related to
# the model's primary key.
apple = Inventory.objects.create(barcode=86, name='Apple')
Inventory.objects.create(barcode=22, name='Pear')
core = Inventory.objects.create(
barcode=87, name='Core', parent=apple
)
rel = Inventory._meta.get_field('parent').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('test', core.parent_id, attrs={}),
'<input type="text" name="test" value="86" '
'class="vForeignKeyRawIdAdminField">'
'<a href="/admin_widgets/inventory/?_to_field=barcode" '
'class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
' <strong><a href="/admin_widgets/inventory/%(pk)s/change/">'
'Apple</a></strong>' % {'pk': apple.pk}
)
def test_fk_related_model_not_in_admin(self):
# FK to a model not registered with admin site. Raw ID widget should
# have no magnifying glass link. See #16542
big_honeycomb = Honeycomb.objects.create(location='Old tree')
big_honeycomb.bee_set.create()
rel = Bee._meta.get_field('honeycomb').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('honeycomb_widget', big_honeycomb.pk, attrs={}),
'<input type="text" name="honeycomb_widget" value="%(hcombpk)s">'
' <strong>%(hcomb)s</strong>'
% {'hcombpk': big_honeycomb.pk, 'hcomb': big_honeycomb}
)
def test_fk_to_self_model_not_in_admin(self):
# FK to self, not registered with admin site. Raw ID widget should have
# no magnifying glass link. See #16542
subject1 = Individual.objects.create(name='Subject #1')
Individual.objects.create(name='Child', parent=subject1)
rel = Individual._meta.get_field('parent').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('individual_widget', subject1.pk, attrs={}),
'<input type="text" name="individual_widget" value="%(subj1pk)s">'
' <strong>%(subj1)s</strong>'
% {'subj1pk': subject1.pk, 'subj1': subject1}
)
def test_proper_manager_for_label_lookup(self):
# see #9258
rel = Inventory._meta.get_field('parent').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
hidden = Inventory.objects.create(
barcode=93, name='Hidden', hidden=True
)
child_of_hidden = Inventory.objects.create(
barcode=94, name='Child of hidden', parent=hidden
)
self.assertHTMLEqual(
w.render('test', child_of_hidden.parent_id, attrs={}),
'<input type="text" name="test" value="93" class="vForeignKeyRawIdAdminField">'
'<a href="/admin_widgets/inventory/?_to_field=barcode" '
'class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
' <strong><a href="/admin_widgets/inventory/%(pk)s/change/">'
'Hidden</a></strong>' % {'pk': hidden.pk}
)
def test_render_unsafe_limit_choices_to(self):
rel = UnsafeLimitChoicesTo._meta.get_field('band').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('test', None),
'<input type="text" name="test" class="vForeignKeyRawIdAdminField">\n'
'<a href="/admin_widgets/band/?name=%22%26%3E%3Cescapeme&_to_field=artist_ptr" '
'class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
)
def test_render_fk_as_pk_model(self):
rel = VideoStream._meta.get_field('release_event').remote_field
w = widgets.ForeignKeyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('test', None),
'<input type="text" name="test" class="vForeignKeyRawIdAdminField">\n'
'<a href="/admin_widgets/releaseevent/?_to_field=album" '
'class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class ManyToManyRawIdWidgetTest(TestCase):
def test_render(self):
band = Band.objects.create(name='Linkin Park')
m1 = Member.objects.create(name='Chester')
m2 = Member.objects.create(name='Mike')
band.members.add(m1, m2)
rel = Band._meta.get_field('members').remote_field
w = widgets.ManyToManyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('test', [m1.pk, m2.pk], attrs={}), (
'<input type="text" name="test" value="%(m1pk)s,%(m2pk)s" class="vManyToManyRawIdAdminField">'
'<a href="/admin_widgets/member/" class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
) % {'m1pk': m1.pk, 'm2pk': m2.pk}
)
self.assertHTMLEqual(
w.render('test', [m1.pk]), (
'<input type="text" name="test" value="%(m1pk)s" class="vManyToManyRawIdAdminField">'
'<a href="/admin_widgets/member/" class="related-lookup" id="lookup_id_test" title="Lookup"></a>'
) % {'m1pk': m1.pk}
)
def test_m2m_related_model_not_in_admin(self):
# M2M relationship with model not registered with admin site. Raw ID
# widget should have no magnifying glass link. See #16542
consultor1 = Advisor.objects.create(name='Rockstar Techie')
c1 = Company.objects.create(name='Doodle')
c2 = Company.objects.create(name='Pear')
consultor1.companies.add(c1, c2)
rel = Advisor._meta.get_field('companies').remote_field
w = widgets.ManyToManyRawIdWidget(rel, widget_admin_site)
self.assertHTMLEqual(
w.render('company_widget1', [c1.pk, c2.pk], attrs={}),
'<input type="text" name="company_widget1" value="%(c1pk)s,%(c2pk)s">' % {'c1pk': c1.pk, 'c2pk': c2.pk}
)
self.assertHTMLEqual(
w.render('company_widget2', [c1.pk]),
'<input type="text" name="company_widget2" value="%(c1pk)s">' % {'c1pk': c1.pk}
)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class RelatedFieldWidgetWrapperTests(SimpleTestCase):
def test_no_can_add_related(self):
rel = Individual._meta.get_field('parent').remote_field
w = widgets.AdminRadioSelect()
# Used to fail with a name error.
w = widgets.RelatedFieldWidgetWrapper(w, rel, widget_admin_site)
self.assertFalse(w.can_add_related)
def test_select_multiple_widget_cant_change_delete_related(self):
rel = Individual._meta.get_field('parent').remote_field
widget = forms.SelectMultiple()
wrapper = widgets.RelatedFieldWidgetWrapper(
widget, rel, widget_admin_site,
can_add_related=True,
can_change_related=True,
can_delete_related=True,
)
self.assertTrue(wrapper.can_add_related)
self.assertFalse(wrapper.can_change_related)
self.assertFalse(wrapper.can_delete_related)
def test_on_delete_cascade_rel_cant_delete_related(self):
rel = Individual._meta.get_field('soulmate').remote_field
widget = forms.Select()
wrapper = widgets.RelatedFieldWidgetWrapper(
widget, rel, widget_admin_site,
can_add_related=True,
can_change_related=True,
can_delete_related=True,
)
self.assertTrue(wrapper.can_add_related)
self.assertTrue(wrapper.can_change_related)
self.assertFalse(wrapper.can_delete_related)
def test_custom_widget_render(self):
class CustomWidget(forms.Select):
def render(self, *args, **kwargs):
return 'custom render output'
rel = Album._meta.get_field('band').remote_field
widget = CustomWidget()
wrapper = widgets.RelatedFieldWidgetWrapper(
widget, rel, widget_admin_site,
can_add_related=True,
can_change_related=True,
can_delete_related=True,
)
output = wrapper.render('name', 'value')
self.assertIn('custom render output', output)
def test_widget_delegates_value_omitted_from_data(self):
class CustomWidget(forms.Select):
def value_omitted_from_data(self, data, files, name):
return False
rel = Album._meta.get_field('band').remote_field
widget = CustomWidget()
wrapper = widgets.RelatedFieldWidgetWrapper(widget, rel, widget_admin_site)
self.assertIs(wrapper.value_omitted_from_data({}, {}, 'band'), False)
def test_widget_is_hidden(self):
rel = Album._meta.get_field('band').remote_field
widget = forms.HiddenInput()
widget.choices = ()
wrapper = widgets.RelatedFieldWidgetWrapper(widget, rel, widget_admin_site)
self.assertIs(wrapper.is_hidden, True)
context = wrapper.get_context('band', None, {})
self.assertIs(context['is_hidden'], True)
output = wrapper.render('name', 'value')
# Related item links are hidden.
self.assertNotIn('<a ', output)
def test_widget_is_not_hidden(self):
rel = Album._meta.get_field('band').remote_field
widget = forms.Select()
wrapper = widgets.RelatedFieldWidgetWrapper(widget, rel, widget_admin_site)
self.assertIs(wrapper.is_hidden, False)
context = wrapper.get_context('band', None, {})
self.assertIs(context['is_hidden'], False)
output = wrapper.render('name', 'value')
# Related item links are present.
self.assertIn('<a ', output)
@override_settings(ROOT_URLCONF='admin_widgets.urls')
class AdminWidgetSeleniumTestCase(AdminSeleniumTestCase):
available_apps = ['admin_widgets'] + AdminSeleniumTestCase.available_apps
def setUp(self):
self.u1 = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
class DateTimePickerSeleniumTests(AdminWidgetSeleniumTestCase):
def test_show_hide_date_time_picker_widgets(self):
"""
Pressing the ESC key or clicking on a widget value closes the date and
time picker widgets.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
self.admin_login(username='super', password='secret', login_url='/')
# Open a page that has a date and time picker widgets
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_member_add'))
# First, with the date picker widget ---------------------------------
cal_icon = self.selenium.find_element(By.ID, 'calendarlink0')
# The date picker is hidden
self.assertFalse(self.selenium.find_element(By.ID, 'calendarbox0').is_displayed())
# Click the calendar icon
cal_icon.click()
# The date picker is visible
self.assertTrue(self.selenium.find_element(By.ID, 'calendarbox0').is_displayed())
# Press the ESC key
self.selenium.find_element(By.TAG_NAME, 'body').send_keys([Keys.ESCAPE])
# The date picker is hidden again
self.assertFalse(self.selenium.find_element(By.ID, 'calendarbox0').is_displayed())
# Click the calendar icon, then on the 15th of current month
cal_icon.click()
self.selenium.find_element(By.XPATH, "//a[contains(text(), '15')]").click()
self.assertFalse(self.selenium.find_element(By.ID, 'calendarbox0').is_displayed())
self.assertEqual(
self.selenium.find_element(By.ID, 'id_birthdate_0').get_attribute('value'),
datetime.today().strftime('%Y-%m-') + '15',
)
# Then, with the time picker widget ----------------------------------
time_icon = self.selenium.find_element(By.ID, 'clocklink0')
# The time picker is hidden
self.assertFalse(self.selenium.find_element(By.ID, 'clockbox0').is_displayed())
# Click the time icon
time_icon.click()
# The time picker is visible
self.assertTrue(self.selenium.find_element(By.ID, 'clockbox0').is_displayed())
self.assertEqual(
[
x.text for x in
self.selenium.find_elements(By.XPATH, "//ul[@class='timelist']/li/a")
],
['Now', 'Midnight', '6 a.m.', 'Noon', '6 p.m.']
)
# Press the ESC key
self.selenium.find_element(By.TAG_NAME, 'body').send_keys([Keys.ESCAPE])
# The time picker is hidden again
self.assertFalse(self.selenium.find_element(By.ID, 'clockbox0').is_displayed())
# Click the time icon, then select the 'Noon' value
time_icon.click()
self.selenium.find_element(By.XPATH, "//a[contains(text(), 'Noon')]").click()
self.assertFalse(self.selenium.find_element(By.ID, 'clockbox0').is_displayed())
self.assertEqual(
self.selenium.find_element(By.ID, 'id_birthdate_1').get_attribute('value'),
'12:00:00',
)
def test_calendar_nonday_class(self):
"""
Ensure cells that are not days of the month have the `nonday` CSS class.
Refs #4574.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
# Open a page that has a date and time picker widgets
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_member_add'))
# fill in the birth date.
self.selenium.find_element(By.ID, 'id_birthdate_0').send_keys('2013-06-01')
# Click the calendar icon
self.selenium.find_element(By.ID, 'calendarlink0').click()
# get all the tds within the calendar
calendar0 = self.selenium.find_element(By.ID, 'calendarin0')
tds = calendar0.find_elements(By.TAG_NAME, 'td')
# make sure the first and last 6 cells have class nonday
for td in tds[:6] + tds[-6:]:
self.assertEqual(td.get_attribute('class'), 'nonday')
def test_calendar_selected_class(self):
"""
Ensure cell for the day in the input has the `selected` CSS class.
Refs #4574.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
# Open a page that has a date and time picker widgets
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_member_add'))
# fill in the birth date.
self.selenium.find_element(By.ID, 'id_birthdate_0').send_keys('2013-06-01')
# Click the calendar icon
self.selenium.find_element(By.ID, 'calendarlink0').click()
# get all the tds within the calendar
calendar0 = self.selenium.find_element(By.ID, 'calendarin0')
tds = calendar0.find_elements(By.TAG_NAME, 'td')
# verify the selected cell
selected = tds[6]
self.assertEqual(selected.get_attribute('class'), 'selected')
self.assertEqual(selected.text, '1')
def test_calendar_no_selected_class(self):
"""
Ensure no cells are given the selected class when the field is empty.
Refs #4574.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
# Open a page that has a date and time picker widgets
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_member_add'))
# Click the calendar icon
self.selenium.find_element(By.ID, 'calendarlink0').click()
# get all the tds within the calendar
calendar0 = self.selenium.find_element(By.ID, 'calendarin0')
tds = calendar0.find_elements(By.TAG_NAME, 'td')
# verify there are no cells with the selected class
selected = [td for td in tds if td.get_attribute('class') == 'selected']
self.assertEqual(len(selected), 0)
def test_calendar_show_date_from_input(self):
"""
The calendar shows the date from the input field for every locale
supported by Django.
"""
from selenium.webdriver.common.by import By
self.selenium.set_window_size(1024, 768)
self.admin_login(username='super', password='secret', login_url='/')
# Enter test data
member = Member.objects.create(name='Bob', birthdate=datetime(1984, 5, 15), gender='M')
# Get month name translations for every locale
month_string = 'May'
path = os.path.join(os.path.dirname(import_module('django.contrib.admin').__file__), 'locale')
for language_code, language_name in settings.LANGUAGES:
try:
catalog = gettext.translation('djangojs', path, [language_code])
except OSError:
continue
if month_string in catalog._catalog:
month_name = catalog._catalog[month_string]
else:
month_name = month_string
# Get the expected caption
may_translation = month_name
expected_caption = '{:s} {:d}'.format(may_translation.upper(), 1984)
# Test with every locale
with override_settings(LANGUAGE_CODE=language_code):
# Open a page that has a date picker widget
url = reverse('admin:admin_widgets_member_change', args=(member.pk,))
self.selenium.get(self.live_server_url + url)
# Click on the calendar icon
self.selenium.find_element(By.ID, 'calendarlink0').click()
# Make sure that the right month and year are displayed
self.wait_for_text('#calendarin0 caption', expected_caption)
@override_settings(TIME_ZONE='Asia/Singapore')
class DateTimePickerShortcutsSeleniumTests(AdminWidgetSeleniumTestCase):
def test_date_time_picker_shortcuts(self):
"""
date/time/datetime picker shortcuts work in the current time zone.
Refs #20663.
This test case is fairly tricky, it relies on selenium still running the browser
in the default time zone "America/Chicago" despite `override_settings` changing
the time zone to "Asia/Singapore".
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
error_margin = timedelta(seconds=10)
# If we are neighbouring a DST, we add an hour of error margin.
tz = zoneinfo.ZoneInfo('America/Chicago')
utc_now = datetime.now(zoneinfo.ZoneInfo('UTC'))
tz_yesterday = (utc_now - timedelta(days=1)).astimezone(tz).tzname()
tz_tomorrow = (utc_now + timedelta(days=1)).astimezone(tz).tzname()
if tz_yesterday != tz_tomorrow:
error_margin += timedelta(hours=1)
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_member_add'))
self.selenium.find_element(By.ID, 'id_name').send_keys('test')
# Click on the "today" and "now" shortcuts.
shortcuts = self.selenium.find_elements(By.CSS_SELECTOR, '.field-birthdate .datetimeshortcuts')
now = datetime.now()
for shortcut in shortcuts:
shortcut.find_element(By.TAG_NAME, 'a').click()
# There is a time zone mismatch warning.
# Warning: This would effectively fail if the TIME_ZONE defined in the
# settings has the same UTC offset as "Asia/Singapore" because the
# mismatch warning would be rightfully missing from the page.
self.assertCountSeleniumElements('.field-birthdate .timezonewarning', 1)
# Submit the form.
with self.wait_page_loaded():
self.selenium.find_element(By.NAME, '_save').click()
# Make sure that "now" in JavaScript is within 10 seconds
# from "now" on the server side.
member = Member.objects.get(name='test')
self.assertGreater(member.birthdate, now - error_margin)
self.assertLess(member.birthdate, now + error_margin)
# The above tests run with Asia/Singapore which are on the positive side of
# UTC. Here we test with a timezone on the negative side.
@override_settings(TIME_ZONE='US/Eastern')
class DateTimePickerAltTimezoneSeleniumTests(DateTimePickerShortcutsSeleniumTests):
pass
class HorizontalVerticalFilterSeleniumTests(AdminWidgetSeleniumTestCase):
def setUp(self):
super().setUp()
self.lisa = Student.objects.create(name='Lisa')
self.john = Student.objects.create(name='John')
self.bob = Student.objects.create(name='Bob')
self.peter = Student.objects.create(name='Peter')
self.jenny = Student.objects.create(name='Jenny')
self.jason = Student.objects.create(name='Jason')
self.cliff = Student.objects.create(name='Cliff')
self.arthur = Student.objects.create(name='Arthur')
self.school = School.objects.create(name='School of Awesome')
def assertActiveButtons(self, mode, field_name, choose, remove, choose_all=None, remove_all=None):
choose_link = '#id_%s_add_link' % field_name
choose_all_link = '#id_%s_add_all_link' % field_name
remove_link = '#id_%s_remove_link' % field_name
remove_all_link = '#id_%s_remove_all_link' % field_name
self.assertEqual(self.has_css_class(choose_link, 'active'), choose)
self.assertEqual(self.has_css_class(remove_link, 'active'), remove)
if mode == 'horizontal':
self.assertEqual(self.has_css_class(choose_all_link, 'active'), choose_all)
self.assertEqual(self.has_css_class(remove_all_link, 'active'), remove_all)
def execute_basic_operations(self, mode, field_name):
from selenium.webdriver.common.by import By
original_url = self.selenium.current_url
from_box = '#id_%s_from' % field_name
to_box = '#id_%s_to' % field_name
choose_link = 'id_%s_add_link' % field_name
choose_all_link = 'id_%s_add_all_link' % field_name
remove_link = 'id_%s_remove_link' % field_name
remove_all_link = 'id_%s_remove_all_link' % field_name
# Initial positions ---------------------------------------------------
self.assertSelectOptions(from_box, [
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jason.id),
str(self.jenny.id), str(self.john.id),
])
self.assertSelectOptions(to_box, [str(self.lisa.id), str(self.peter.id)])
self.assertActiveButtons(mode, field_name, False, False, True, True)
# Click 'Choose all' --------------------------------------------------
if mode == 'horizontal':
self.selenium.find_element(By.ID, choose_all_link).click()
elif mode == 'vertical':
# There 's no 'Choose all' button in vertical mode, so individually
# select all options and click 'Choose'.
for option in self.selenium.find_elements(By.CSS_SELECTOR, from_box + ' > option'):
option.click()
self.selenium.find_element(By.ID, choose_link).click()
self.assertSelectOptions(from_box, [])
self.assertSelectOptions(to_box, [
str(self.lisa.id), str(self.peter.id),
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jason.id),
str(self.jenny.id), str(self.john.id),
])
self.assertActiveButtons(mode, field_name, False, False, False, True)
# Click 'Remove all' --------------------------------------------------
if mode == 'horizontal':
self.selenium.find_element(By.ID, remove_all_link).click()
elif mode == 'vertical':
# There 's no 'Remove all' button in vertical mode, so individually
# select all options and click 'Remove'.
for option in self.selenium.find_elements(By.CSS_SELECTOR, to_box + ' > option'):
option.click()
self.selenium.find_element(By.ID, remove_link).click()
self.assertSelectOptions(from_box, [
str(self.lisa.id), str(self.peter.id),
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jason.id),
str(self.jenny.id), str(self.john.id),
])
self.assertSelectOptions(to_box, [])
self.assertActiveButtons(mode, field_name, False, False, True, False)
# Choose some options ------------------------------------------------
from_lisa_select_option = self.selenium.find_element(
By.CSS_SELECTOR,
'{} > option[value="{}"]'.format(from_box, self.lisa.id)
)
# Check the title attribute is there for tool tips: ticket #20821
self.assertEqual(from_lisa_select_option.get_attribute('title'), from_lisa_select_option.get_attribute('text'))
self.select_option(from_box, str(self.lisa.id))
self.select_option(from_box, str(self.jason.id))
self.select_option(from_box, str(self.bob.id))
self.select_option(from_box, str(self.john.id))
self.assertActiveButtons(mode, field_name, True, False, True, False)
self.selenium.find_element(By.ID, choose_link).click()
self.assertActiveButtons(mode, field_name, False, False, True, True)
self.assertSelectOptions(from_box, [
str(self.peter.id), str(self.arthur.id),
str(self.cliff.id), str(self.jenny.id),
])
self.assertSelectOptions(to_box, [
str(self.lisa.id), str(self.bob.id),
str(self.jason.id), str(self.john.id),
])
# Check the tooltip is still there after moving: ticket #20821
to_lisa_select_option = self.selenium.find_element(
By.CSS_SELECTOR,
'{} > option[value="{}"]'.format(to_box, self.lisa.id)
)
self.assertEqual(to_lisa_select_option.get_attribute('title'), to_lisa_select_option.get_attribute('text'))
# Remove some options -------------------------------------------------
self.select_option(to_box, str(self.lisa.id))
self.select_option(to_box, str(self.bob.id))
self.assertActiveButtons(mode, field_name, False, True, True, True)
self.selenium.find_element(By.ID, remove_link).click()
self.assertActiveButtons(mode, field_name, False, False, True, True)
self.assertSelectOptions(from_box, [
str(self.peter.id), str(self.arthur.id),
str(self.cliff.id), str(self.jenny.id),
str(self.lisa.id), str(self.bob.id)
])
self.assertSelectOptions(to_box, [str(self.jason.id), str(self.john.id)])
# Choose some more options --------------------------------------------
self.select_option(from_box, str(self.arthur.id))
self.select_option(from_box, str(self.cliff.id))
self.selenium.find_element(By.ID, choose_link).click()
self.assertSelectOptions(from_box, [
str(self.peter.id), str(self.jenny.id),
str(self.lisa.id), str(self.bob.id),
])
self.assertSelectOptions(to_box, [
str(self.jason.id), str(self.john.id),
str(self.arthur.id), str(self.cliff.id),
])
# Choose some more options --------------------------------------------
self.select_option(from_box, str(self.peter.id))
self.select_option(from_box, str(self.lisa.id))
# Confirm they're selected after clicking inactive buttons: ticket #26575
self.assertSelectedOptions(from_box, [str(self.peter.id), str(self.lisa.id)])
self.selenium.find_element(By.ID, remove_link).click()
self.assertSelectedOptions(from_box, [str(self.peter.id), str(self.lisa.id)])
# Unselect the options ------------------------------------------------
self.deselect_option(from_box, str(self.peter.id))
self.deselect_option(from_box, str(self.lisa.id))
# Choose some more options --------------------------------------------
self.select_option(to_box, str(self.jason.id))
self.select_option(to_box, str(self.john.id))
# Confirm they're selected after clicking inactive buttons: ticket #26575
self.assertSelectedOptions(to_box, [str(self.jason.id), str(self.john.id)])
self.selenium.find_element(By.ID, choose_link).click()
self.assertSelectedOptions(to_box, [str(self.jason.id), str(self.john.id)])
# Unselect the options ------------------------------------------------
self.deselect_option(to_box, str(self.jason.id))
self.deselect_option(to_box, str(self.john.id))
# Pressing buttons shouldn't change the URL.
self.assertEqual(self.selenium.current_url, original_url)
def test_basic(self):
from selenium.webdriver.common.by import By
self.selenium.set_window_size(1024, 768)
self.school.students.set([self.lisa, self.peter])
self.school.alumni.set([self.lisa, self.peter])
self.admin_login(username='super', password='secret', login_url='/')
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_school_change', args=(self.school.id,)))
self.wait_page_ready()
self.execute_basic_operations('vertical', 'students')
self.execute_basic_operations('horizontal', 'alumni')
# Save and check that everything is properly stored in the database ---
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.wait_page_ready()
self.school = School.objects.get(id=self.school.id) # Reload from database
self.assertEqual(list(self.school.students.all()), [self.arthur, self.cliff, self.jason, self.john])
self.assertEqual(list(self.school.alumni.all()), [self.arthur, self.cliff, self.jason, self.john])
def test_filter(self):
"""
Typing in the search box filters out options displayed in the 'from'
box.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
self.selenium.set_window_size(1024, 768)
self.school.students.set([self.lisa, self.peter])
self.school.alumni.set([self.lisa, self.peter])
self.admin_login(username='super', password='secret', login_url='/')
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_school_change', args=(self.school.id,)))
for field_name in ['students', 'alumni']:
from_box = '#id_%s_from' % field_name
to_box = '#id_%s_to' % field_name
choose_link = 'id_%s_add_link' % field_name
remove_link = 'id_%s_remove_link' % field_name
input = self.selenium.find_element(By.ID, 'id_%s_input' % field_name)
# Initial values
self.assertSelectOptions(from_box, [
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jason.id),
str(self.jenny.id), str(self.john.id),
])
# Typing in some characters filters out non-matching options
input.send_keys('a')
self.assertSelectOptions(from_box, [str(self.arthur.id), str(self.jason.id)])
input.send_keys('R')
self.assertSelectOptions(from_box, [str(self.arthur.id)])
# Clearing the text box makes the other options reappear
input.send_keys([Keys.BACK_SPACE])
self.assertSelectOptions(from_box, [str(self.arthur.id), str(self.jason.id)])
input.send_keys([Keys.BACK_SPACE])
self.assertSelectOptions(from_box, [
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jason.id),
str(self.jenny.id), str(self.john.id),
])
# -----------------------------------------------------------------
# Choosing a filtered option sends it properly to the 'to' box.
input.send_keys('a')
self.assertSelectOptions(from_box, [str(self.arthur.id), str(self.jason.id)])
self.select_option(from_box, str(self.jason.id))
self.selenium.find_element(By.ID, choose_link).click()
self.assertSelectOptions(from_box, [str(self.arthur.id)])
self.assertSelectOptions(to_box, [
str(self.lisa.id), str(self.peter.id), str(self.jason.id),
])
self.select_option(to_box, str(self.lisa.id))
self.selenium.find_element(By.ID, remove_link).click()
self.assertSelectOptions(from_box, [str(self.arthur.id), str(self.lisa.id)])
self.assertSelectOptions(to_box, [str(self.peter.id), str(self.jason.id)])
input.send_keys([Keys.BACK_SPACE]) # Clear text box
self.assertSelectOptions(from_box, [
str(self.arthur.id), str(self.bob.id),
str(self.cliff.id), str(self.jenny.id),
str(self.john.id), str(self.lisa.id),
])
self.assertSelectOptions(to_box, [str(self.peter.id), str(self.jason.id)])
# -----------------------------------------------------------------
# Pressing enter on a filtered option sends it properly to
# the 'to' box.
self.select_option(to_box, str(self.jason.id))
self.selenium.find_element(By.ID, remove_link).click()
input.send_keys('ja')
self.assertSelectOptions(from_box, [str(self.jason.id)])
input.send_keys([Keys.ENTER])
self.assertSelectOptions(to_box, [str(self.peter.id), str(self.jason.id)])
input.send_keys([Keys.BACK_SPACE, Keys.BACK_SPACE])
# Save and check that everything is properly stored in the database ---
with self.wait_page_loaded():
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.school = School.objects.get(id=self.school.id) # Reload from database
self.assertEqual(list(self.school.students.all()), [self.jason, self.peter])
self.assertEqual(list(self.school.alumni.all()), [self.jason, self.peter])
def test_back_button_bug(self):
"""
Some browsers had a bug where navigating away from the change page
and then clicking the browser's back button would clear the
filter_horizontal/filter_vertical widgets (#13614).
"""
from selenium.webdriver.common.by import By
self.school.students.set([self.lisa, self.peter])
self.school.alumni.set([self.lisa, self.peter])
self.admin_login(username='super', password='secret', login_url='/')
change_url = reverse('admin:admin_widgets_school_change', args=(self.school.id,))
self.selenium.get(self.live_server_url + change_url)
# Navigate away and go back to the change form page.
self.selenium.find_element(By.LINK_TEXT, 'Home').click()
self.selenium.back()
expected_unselected_values = [
str(self.arthur.id), str(self.bob.id), str(self.cliff.id),
str(self.jason.id), str(self.jenny.id), str(self.john.id),
]
expected_selected_values = [str(self.lisa.id), str(self.peter.id)]
# Everything is still in place
self.assertSelectOptions('#id_students_from', expected_unselected_values)
self.assertSelectOptions('#id_students_to', expected_selected_values)
self.assertSelectOptions('#id_alumni_from', expected_unselected_values)
self.assertSelectOptions('#id_alumni_to', expected_selected_values)
def test_refresh_page(self):
"""
Horizontal and vertical filter widgets keep selected options on page
reload (#22955).
"""
self.school.students.add(self.arthur, self.jason)
self.school.alumni.add(self.arthur, self.jason)
self.admin_login(username='super', password='secret', login_url='/')
change_url = reverse('admin:admin_widgets_school_change', args=(self.school.id,))
self.selenium.get(self.live_server_url + change_url)
self.assertCountSeleniumElements('#id_students_to > option', 2)
# self.selenium.refresh() or send_keys(Keys.F5) does hard reload and
# doesn't replicate what happens when a user clicks the browser's
# 'Refresh' button.
with self.wait_page_loaded():
self.selenium.execute_script("location.reload()")
self.assertCountSeleniumElements('#id_students_to > option', 2)
class AdminRawIdWidgetSeleniumTests(AdminWidgetSeleniumTestCase):
def setUp(self):
super().setUp()
Band.objects.create(id=42, name='Bogey Blues')
Band.objects.create(id=98, name='Green Potatoes')
def test_ForeignKey(self):
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_event_add'))
main_window = self.selenium.current_window_handle
# No value has been selected yet
self.assertEqual(self.selenium.find_element(By.ID, 'id_main_band').get_attribute('value'), '')
# Open the popup window and click on a band
self.selenium.find_element(By.ID, 'lookup_id_main_band').click()
self.wait_for_and_switch_to_popup()
link = self.selenium.find_element(By.LINK_TEXT, 'Bogey Blues')
self.assertIn('/band/42/', link.get_attribute('href'))
link.click()
# The field now contains the selected band's id
self.selenium.switch_to.window(main_window)
self.wait_for_value('#id_main_band', '42')
# Reopen the popup window and click on another band
self.selenium.find_element(By.ID, 'lookup_id_main_band').click()
self.wait_for_and_switch_to_popup()
link = self.selenium.find_element(By.LINK_TEXT, 'Green Potatoes')
self.assertIn('/band/98/', link.get_attribute('href'))
link.click()
# The field now contains the other selected band's id
self.selenium.switch_to.window(main_window)
self.wait_for_value('#id_main_band', '98')
def test_many_to_many(self):
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_event_add'))
main_window = self.selenium.current_window_handle
# No value has been selected yet
self.assertEqual(self.selenium.find_element(By.ID, 'id_supporting_bands').get_attribute('value'), '')
# Help text for the field is displayed
self.assertEqual(
self.selenium.find_element(By.CSS_SELECTOR, '.field-supporting_bands div.help').text,
'Supporting Bands.'
)
# Open the popup window and click on a band
self.selenium.find_element(By.ID, 'lookup_id_supporting_bands').click()
self.wait_for_and_switch_to_popup()
link = self.selenium.find_element(By.LINK_TEXT, 'Bogey Blues')
self.assertIn('/band/42/', link.get_attribute('href'))
link.click()
# The field now contains the selected band's id
self.selenium.switch_to.window(main_window)
self.wait_for_value('#id_supporting_bands', '42')
# Reopen the popup window and click on another band
self.selenium.find_element(By.ID, 'lookup_id_supporting_bands').click()
self.wait_for_and_switch_to_popup()
link = self.selenium.find_element(By.LINK_TEXT, 'Green Potatoes')
self.assertIn('/band/98/', link.get_attribute('href'))
link.click()
# The field now contains the two selected bands' ids
self.selenium.switch_to.window(main_window)
self.wait_for_value('#id_supporting_bands', '42,98')
class RelatedFieldWidgetSeleniumTests(AdminWidgetSeleniumTestCase):
def test_ForeignKey_using_to_field(self):
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url='/')
self.selenium.get(self.live_server_url + reverse('admin:admin_widgets_profile_add'))
main_window = self.selenium.current_window_handle
# Click the Add User button to add new
self.selenium.find_element(By.ID, 'add_id_user').click()
self.wait_for_and_switch_to_popup()
password_field = self.selenium.find_element(By.ID, 'id_password')
password_field.send_keys('password')
username_field = self.selenium.find_element(By.ID, 'id_username')
username_value = 'newuser'
username_field.send_keys(username_value)
save_button_css_selector = '.submit-row > input[type=submit]'
self.selenium.find_element(By.CSS_SELECTOR, save_button_css_selector).click()
self.selenium.switch_to.window(main_window)
# The field now contains the new user
self.selenium.find_element(By.CSS_SELECTOR, '#id_user option[value=newuser]')
# Click the Change User button to change it
self.selenium.find_element(By.ID, 'change_id_user').click()
self.wait_for_and_switch_to_popup()
username_field = self.selenium.find_element(By.ID, 'id_username')
username_value = 'changednewuser'
username_field.clear()
username_field.send_keys(username_value)
save_button_css_selector = '.submit-row > input[type=submit]'
self.selenium.find_element(By.CSS_SELECTOR, save_button_css_selector).click()
self.selenium.switch_to.window(main_window)
self.selenium.find_element(By.CSS_SELECTOR, '#id_user option[value=changednewuser]')
# Go ahead and submit the form to make sure it works
self.selenium.find_element(By.CSS_SELECTOR, save_button_css_selector).click()
self.wait_for_text('li.success', 'The profile “changednewuser” was added successfully.')
profiles = Profile.objects.all()
self.assertEqual(len(profiles), 1)
self.assertEqual(profiles[0].user.username, username_value)
|
e29f98f9f26a81c1620a754fa30eba4807b44b79623a0d0fc2b24cf27972e119 | import decimal
from django.core.management.color import no_style
from django.db import NotSupportedError, connection, transaction
from django.db.backends.base.operations import BaseDatabaseOperations
from django.db.models import DurationField
from django.test import (
SimpleTestCase, TestCase, TransactionTestCase, override_settings,
skipIfDBFeature,
)
from django.utils import timezone
from ..models import Author, Book
class SimpleDatabaseOperationTests(SimpleTestCase):
may_require_msg = 'subclasses of BaseDatabaseOperations may require a %s() method'
def setUp(self):
self.ops = BaseDatabaseOperations(connection=connection)
def test_deferrable_sql(self):
self.assertEqual(self.ops.deferrable_sql(), '')
def test_end_transaction_rollback(self):
self.assertEqual(self.ops.end_transaction_sql(success=False), 'ROLLBACK;')
def test_no_limit_value(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'no_limit_value'):
self.ops.no_limit_value()
def test_quote_name(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'quote_name'):
self.ops.quote_name('a')
def test_regex_lookup(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'regex_lookup'):
self.ops.regex_lookup(lookup_type='regex')
def test_set_time_zone_sql(self):
self.assertEqual(self.ops.set_time_zone_sql(), '')
def test_sql_flush(self):
msg = 'subclasses of BaseDatabaseOperations must provide an sql_flush() method'
with self.assertRaisesMessage(NotImplementedError, msg):
self.ops.sql_flush(None, None)
def test_pk_default_value(self):
self.assertEqual(self.ops.pk_default_value(), 'DEFAULT')
def test_tablespace_sql(self):
self.assertEqual(self.ops.tablespace_sql(None), '')
def test_sequence_reset_by_name_sql(self):
self.assertEqual(self.ops.sequence_reset_by_name_sql(None, []), [])
def test_adapt_unknown_value_decimal(self):
value = decimal.Decimal('3.14')
self.assertEqual(
self.ops.adapt_unknown_value(value),
self.ops.adapt_decimalfield_value(value)
)
def test_adapt_unknown_value_date(self):
value = timezone.now().date()
self.assertEqual(self.ops.adapt_unknown_value(value), self.ops.adapt_datefield_value(value))
def test_adapt_unknown_value_time(self):
value = timezone.now().time()
self.assertEqual(self.ops.adapt_unknown_value(value), self.ops.adapt_timefield_value(value))
def test_adapt_timefield_value_none(self):
self.assertIsNone(self.ops.adapt_timefield_value(None))
def test_adapt_datetimefield_value(self):
self.assertIsNone(self.ops.adapt_datetimefield_value(None))
def test_adapt_timefield_value(self):
msg = 'Django does not support timezone-aware times.'
with self.assertRaisesMessage(ValueError, msg):
self.ops.adapt_timefield_value(timezone.make_aware(timezone.now()))
@override_settings(USE_TZ=False)
def test_adapt_timefield_value_unaware(self):
now = timezone.now()
self.assertEqual(self.ops.adapt_timefield_value(now), str(now))
def test_format_for_duration_arithmetic(self):
msg = self.may_require_msg % 'format_for_duration_arithmetic'
with self.assertRaisesMessage(NotImplementedError, msg):
self.ops.format_for_duration_arithmetic(None)
def test_date_extract_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'date_extract_sql'):
self.ops.date_extract_sql(None, None)
def test_time_extract_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'date_extract_sql'):
self.ops.time_extract_sql(None, None)
def test_date_trunc_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'date_trunc_sql'):
self.ops.date_trunc_sql(None, None)
def test_time_trunc_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'time_trunc_sql'):
self.ops.time_trunc_sql(None, None)
def test_datetime_trunc_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'datetime_trunc_sql'):
self.ops.datetime_trunc_sql(None, None, None)
def test_datetime_cast_date_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'datetime_cast_date_sql'):
self.ops.datetime_cast_date_sql(None, None)
def test_datetime_cast_time_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'datetime_cast_time_sql'):
self.ops.datetime_cast_time_sql(None, None)
def test_datetime_extract_sql(self):
with self.assertRaisesMessage(NotImplementedError, self.may_require_msg % 'datetime_extract_sql'):
self.ops.datetime_extract_sql(None, None, None)
class DatabaseOperationTests(TestCase):
def setUp(self):
self.ops = BaseDatabaseOperations(connection=connection)
@skipIfDBFeature('supports_over_clause')
def test_window_frame_raise_not_supported_error(self):
msg = 'This backend does not support window expressions.'
with self.assertRaisesMessage(NotSupportedError, msg):
self.ops.window_frame_rows_start_end()
@skipIfDBFeature('can_distinct_on_fields')
def test_distinct_on_fields(self):
msg = 'DISTINCT ON fields is not supported by this database backend'
with self.assertRaisesMessage(NotSupportedError, msg):
self.ops.distinct_sql(['a', 'b'], None)
@skipIfDBFeature('supports_temporal_subtraction')
def test_subtract_temporals(self):
duration_field = DurationField()
duration_field_internal_type = duration_field.get_internal_type()
msg = (
'This backend does not support %s subtraction.' %
duration_field_internal_type
)
with self.assertRaisesMessage(NotSupportedError, msg):
self.ops.subtract_temporals(duration_field_internal_type, None, None)
class SqlFlushTests(TransactionTestCase):
available_apps = ['backends']
def test_sql_flush_no_tables(self):
self.assertEqual(connection.ops.sql_flush(no_style(), []), [])
def test_execute_sql_flush_statements(self):
with transaction.atomic():
author = Author.objects.create(name='George Orwell')
Book.objects.create(author=author)
author = Author.objects.create(name='Harper Lee')
Book.objects.create(author=author)
Book.objects.create(author=author)
self.assertIs(Author.objects.exists(), True)
self.assertIs(Book.objects.exists(), True)
sql_list = connection.ops.sql_flush(
no_style(),
[Author._meta.db_table, Book._meta.db_table],
reset_sequences=True,
allow_cascade=True,
)
connection.ops.execute_sql_flush(sql_list)
with transaction.atomic():
self.assertIs(Author.objects.exists(), False)
self.assertIs(Book.objects.exists(), False)
if connection.features.supports_sequence_reset:
author = Author.objects.create(name='F. Scott Fitzgerald')
self.assertEqual(author.pk, 1)
book = Book.objects.create(author=author)
self.assertEqual(book.pk, 1)
|
ffbfa7fa3ae0c49896997fd8b9aa548cd9683bc2c812fcf9477acba6d1b47588 | import asyncio
import difflib
import json
import logging
import posixpath
import sys
import threading
import unittest
from collections import Counter
from contextlib import contextmanager
from copy import copy, deepcopy
from difflib import get_close_matches
from functools import wraps
from unittest.suite import _DebugResult
from unittest.util import safe_repr
from urllib.parse import (
parse_qsl, unquote, urlencode, urljoin, urlparse, urlsplit, urlunparse,
)
from urllib.request import url2pathname
from asgiref.sync import async_to_sync
from django.apps import apps
from django.conf import settings
from django.core import mail
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.core.files import locks
from django.core.handlers.wsgi import WSGIHandler, get_path_info
from django.core.management import call_command
from django.core.management.color import no_style
from django.core.management.sql import emit_post_migrate_signal
from django.core.servers.basehttp import ThreadedWSGIServer, WSGIRequestHandler
from django.db import DEFAULT_DB_ALIAS, connection, connections, transaction
from django.forms.fields import CharField
from django.http import QueryDict
from django.http.request import split_domain_port, validate_host
from django.test.client import AsyncClient, Client
from django.test.html import HTMLParseError, parse_html
from django.test.signals import setting_changed, template_rendered
from django.test.utils import (
CaptureQueriesContext, ContextList, compare_xml, modify_settings,
override_settings,
)
from django.utils.functional import classproperty
from django.utils.version import PY310
from django.views.static import serve
__all__ = ('TestCase', 'TransactionTestCase',
'SimpleTestCase', 'skipIfDBFeature', 'skipUnlessDBFeature')
def to_list(value):
"""
Put value into a list if it's not already one. Return an empty list if
value is None.
"""
if value is None:
value = []
elif not isinstance(value, list):
value = [value]
return value
def assert_and_parse_html(self, html, user_msg, msg):
try:
dom = parse_html(html)
except HTMLParseError as e:
standardMsg = '%s\n%s' % (msg, e)
self.fail(self._formatMessage(user_msg, standardMsg))
return dom
class _AssertNumQueriesContext(CaptureQueriesContext):
def __init__(self, test_case, num, connection):
self.test_case = test_case
self.num = num
super().__init__(connection)
def __exit__(self, exc_type, exc_value, traceback):
super().__exit__(exc_type, exc_value, traceback)
if exc_type is not None:
return
executed = len(self)
self.test_case.assertEqual(
executed, self.num,
"%d queries executed, %d expected\nCaptured queries were:\n%s" % (
executed, self.num,
'\n'.join(
'%d. %s' % (i, query['sql']) for i, query in enumerate(self.captured_queries, start=1)
)
)
)
class _AssertTemplateUsedContext:
def __init__(self, test_case, template_name):
self.test_case = test_case
self.template_name = template_name
self.rendered_templates = []
self.rendered_template_names = []
self.context = ContextList()
def on_template_render(self, sender, signal, template, context, **kwargs):
self.rendered_templates.append(template)
self.rendered_template_names.append(template.name)
self.context.append(copy(context))
def test(self):
return self.template_name in self.rendered_template_names
def message(self):
return '%s was not rendered.' % self.template_name
def __enter__(self):
template_rendered.connect(self.on_template_render)
return self
def __exit__(self, exc_type, exc_value, traceback):
template_rendered.disconnect(self.on_template_render)
if exc_type is not None:
return
if not self.test():
message = self.message()
if self.rendered_templates:
message += ' Following templates were rendered: %s' % (
', '.join(self.rendered_template_names)
)
else:
message += ' No template was rendered.'
self.test_case.fail(message)
class _AssertTemplateNotUsedContext(_AssertTemplateUsedContext):
def test(self):
return self.template_name not in self.rendered_template_names
def message(self):
return '%s was rendered.' % self.template_name
class DatabaseOperationForbidden(AssertionError):
pass
class _DatabaseFailure:
def __init__(self, wrapped, message):
self.wrapped = wrapped
self.message = message
def __call__(self):
raise DatabaseOperationForbidden(self.message)
class SimpleTestCase(unittest.TestCase):
# The class we'll use for the test client self.client.
# Can be overridden in derived classes.
client_class = Client
async_client_class = AsyncClient
_overridden_settings = None
_modified_settings = None
databases = set()
_disallowed_database_msg = (
'Database %(operation)s to %(alias)r are not allowed in SimpleTestCase '
'subclasses. Either subclass TestCase or TransactionTestCase to ensure '
'proper test isolation or add %(alias)r to %(test)s.databases to silence '
'this failure.'
)
_disallowed_connection_methods = [
('connect', 'connections'),
('temporary_connection', 'connections'),
('cursor', 'queries'),
('chunked_cursor', 'queries'),
]
@classmethod
def setUpClass(cls):
super().setUpClass()
if cls._overridden_settings:
cls._cls_overridden_context = override_settings(**cls._overridden_settings)
cls._cls_overridden_context.enable()
cls.addClassCleanup(cls._cls_overridden_context.disable)
if cls._modified_settings:
cls._cls_modified_context = modify_settings(cls._modified_settings)
cls._cls_modified_context.enable()
cls.addClassCleanup(cls._cls_modified_context.disable)
cls._add_databases_failures()
cls.addClassCleanup(cls._remove_databases_failures)
@classmethod
def _validate_databases(cls):
if cls.databases == '__all__':
return frozenset(connections)
for alias in cls.databases:
if alias not in connections:
message = '%s.%s.databases refers to %r which is not defined in settings.DATABASES.' % (
cls.__module__,
cls.__qualname__,
alias,
)
close_matches = get_close_matches(alias, list(connections))
if close_matches:
message += ' Did you mean %r?' % close_matches[0]
raise ImproperlyConfigured(message)
return frozenset(cls.databases)
@classmethod
def _add_databases_failures(cls):
cls.databases = cls._validate_databases()
for alias in connections:
if alias in cls.databases:
continue
connection = connections[alias]
for name, operation in cls._disallowed_connection_methods:
message = cls._disallowed_database_msg % {
'test': '%s.%s' % (cls.__module__, cls.__qualname__),
'alias': alias,
'operation': operation,
}
method = getattr(connection, name)
setattr(connection, name, _DatabaseFailure(method, message))
@classmethod
def _remove_databases_failures(cls):
for alias in connections:
if alias in cls.databases:
continue
connection = connections[alias]
for name, _ in cls._disallowed_connection_methods:
method = getattr(connection, name)
setattr(connection, name, method.wrapped)
def __call__(self, result=None):
"""
Wrapper around default __call__ method to perform common Django test
set up. This means that user-defined Test Cases aren't required to
include a call to super().setUp().
"""
self._setup_and_call(result)
def debug(self):
"""Perform the same as __call__(), without catching the exception."""
debug_result = _DebugResult()
self._setup_and_call(debug_result, debug=True)
def _setup_and_call(self, result, debug=False):
"""
Perform the following in order: pre-setup, run test, post-teardown,
skipping pre/post hooks if test is set to be skipped.
If debug=True, reraise any errors in setup and use super().debug()
instead of __call__() to run the test.
"""
testMethod = getattr(self, self._testMethodName)
skipped = (
getattr(self.__class__, "__unittest_skip__", False) or
getattr(testMethod, "__unittest_skip__", False)
)
# Convert async test methods.
if asyncio.iscoroutinefunction(testMethod):
setattr(self, self._testMethodName, async_to_sync(testMethod))
if not skipped:
try:
self._pre_setup()
except Exception:
if debug:
raise
result.addError(self, sys.exc_info())
return
if debug:
super().debug()
else:
super().__call__(result)
if not skipped:
try:
self._post_teardown()
except Exception:
if debug:
raise
result.addError(self, sys.exc_info())
return
def _pre_setup(self):
"""
Perform pre-test setup:
* Create a test client.
* Clear the mail test outbox.
"""
self.client = self.client_class()
self.async_client = self.async_client_class()
mail.outbox = []
def _post_teardown(self):
"""Perform post-test things."""
pass
def settings(self, **kwargs):
"""
A context manager that temporarily sets a setting and reverts to the
original value when exiting the context.
"""
return override_settings(**kwargs)
def modify_settings(self, **kwargs):
"""
A context manager that temporarily applies changes a list setting and
reverts back to the original value when exiting the context.
"""
return modify_settings(**kwargs)
def assertRedirects(self, response, expected_url, status_code=302,
target_status_code=200, msg_prefix='',
fetch_redirect_response=True):
"""
Assert that a response redirected to a specific URL and that the
redirect URL can be loaded.
Won't work for external links since it uses the test client to do a
request (use fetch_redirect_response=False to check such links without
fetching them).
"""
if msg_prefix:
msg_prefix += ": "
if hasattr(response, 'redirect_chain'):
# The request was a followed redirect
self.assertTrue(
response.redirect_chain,
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
% (response.status_code, status_code)
)
self.assertEqual(
response.redirect_chain[0][1], status_code,
msg_prefix + "Initial response didn't redirect as expected: Response code was %d (expected %d)"
% (response.redirect_chain[0][1], status_code)
)
url, status_code = response.redirect_chain[-1]
self.assertEqual(
response.status_code, target_status_code,
msg_prefix + "Response didn't redirect as expected: Final Response code was %d (expected %d)"
% (response.status_code, target_status_code)
)
else:
# Not a followed redirect
self.assertEqual(
response.status_code, status_code,
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
% (response.status_code, status_code)
)
url = response.url
scheme, netloc, path, query, fragment = urlsplit(url)
# Prepend the request path to handle relative path redirects.
if not path.startswith('/'):
url = urljoin(response.request['PATH_INFO'], url)
path = urljoin(response.request['PATH_INFO'], path)
if fetch_redirect_response:
# netloc might be empty, or in cases where Django tests the
# HTTP scheme, the convention is for netloc to be 'testserver'.
# Trust both as "internal" URLs here.
domain, port = split_domain_port(netloc)
if domain and not validate_host(domain, settings.ALLOWED_HOSTS):
raise ValueError(
"The test client is unable to fetch remote URLs (got %s). "
"If the host is served by Django, add '%s' to ALLOWED_HOSTS. "
"Otherwise, use assertRedirects(..., fetch_redirect_response=False)."
% (url, domain)
)
# Get the redirection page, using the same client that was used
# to obtain the original response.
extra = response.client.extra or {}
redirect_response = response.client.get(
path,
QueryDict(query),
secure=(scheme == 'https'),
**extra,
)
self.assertEqual(
redirect_response.status_code, target_status_code,
msg_prefix + "Couldn't retrieve redirection page '%s': response code was %d (expected %d)"
% (path, redirect_response.status_code, target_status_code)
)
self.assertURLEqual(
url, expected_url,
msg_prefix + "Response redirected to '%s', expected '%s'" % (url, expected_url)
)
def assertURLEqual(self, url1, url2, msg_prefix=''):
"""
Assert that two URLs are the same, ignoring the order of query string
parameters except for parameters with the same name.
For example, /path/?x=1&y=2 is equal to /path/?y=2&x=1, but
/path/?a=1&a=2 isn't equal to /path/?a=2&a=1.
"""
def normalize(url):
"""Sort the URL's query string parameters."""
url = str(url) # Coerce reverse_lazy() URLs.
scheme, netloc, path, params, query, fragment = urlparse(url)
query_parts = sorted(parse_qsl(query))
return urlunparse((scheme, netloc, path, params, urlencode(query_parts), fragment))
self.assertEqual(
normalize(url1), normalize(url2),
msg_prefix + "Expected '%s' to equal '%s'." % (url1, url2)
)
def _assert_contains(self, response, text, status_code, msg_prefix, html):
# If the response supports deferred rendering and hasn't been rendered
# yet, then ensure that it does get rendered before proceeding further.
if hasattr(response, 'render') and callable(response.render) and not response.is_rendered:
response.render()
if msg_prefix:
msg_prefix += ": "
self.assertEqual(
response.status_code, status_code,
msg_prefix + "Couldn't retrieve content: Response code was %d"
" (expected %d)" % (response.status_code, status_code)
)
if response.streaming:
content = b''.join(response.streaming_content)
else:
content = response.content
if not isinstance(text, bytes) or html:
text = str(text)
content = content.decode(response.charset)
text_repr = "'%s'" % text
else:
text_repr = repr(text)
if html:
content = assert_and_parse_html(self, content, None, "Response's content is not valid HTML:")
text = assert_and_parse_html(self, text, None, "Second argument is not valid HTML:")
real_count = content.count(text)
return (text_repr, real_count, msg_prefix)
def assertContains(self, response, text, count=None, status_code=200, msg_prefix='', html=False):
"""
Assert that a response indicates that some content was retrieved
successfully, (i.e., the HTTP status code was as expected) and that
``text`` occurs ``count`` times in the content of the response.
If ``count`` is None, the count doesn't matter - the assertion is true
if the text occurs at least once in the response.
"""
text_repr, real_count, msg_prefix = self._assert_contains(
response, text, status_code, msg_prefix, html)
if count is not None:
self.assertEqual(
real_count, count,
msg_prefix + "Found %d instances of %s in response (expected %d)" % (real_count, text_repr, count)
)
else:
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find %s in response" % text_repr)
def assertNotContains(self, response, text, status_code=200, msg_prefix='', html=False):
"""
Assert that a response indicates that some content was retrieved
successfully, (i.e., the HTTP status code was as expected) and that
``text`` doesn't occur in the content of the response.
"""
text_repr, real_count, msg_prefix = self._assert_contains(
response, text, status_code, msg_prefix, html)
self.assertEqual(real_count, 0, msg_prefix + "Response should not contain %s" % text_repr)
def _check_test_client_response(self, response, attribute, method_name):
"""
Raise a ValueError if the given response doesn't have the required
attribute.
"""
if not hasattr(response, attribute):
raise ValueError(
f"{method_name}() is only usable on responses fetched using "
"the Django test Client."
)
def assertFormError(self, response, form, field, errors, msg_prefix=''):
"""
Assert that a form used to render the response has a specific field
error.
"""
self._check_test_client_response(response, 'context', 'assertFormError')
if msg_prefix:
msg_prefix += ": "
# Put context(s) into a list to simplify processing.
contexts = to_list(response.context)
if not contexts:
self.fail(msg_prefix + "Response did not use any contexts to render the response")
# Put error(s) into a list to simplify processing.
errors = to_list(errors)
# Search all contexts for the error.
found_form = False
for i, context in enumerate(contexts):
if form not in context:
continue
found_form = True
for err in errors:
if field:
if field in context[form].errors:
field_errors = context[form].errors[field]
self.assertTrue(
err in field_errors,
msg_prefix + "The field '%s' on form '%s' in"
" context %d does not contain the error '%s'"
" (actual errors: %s)" %
(field, form, i, err, repr(field_errors))
)
elif field in context[form].fields:
self.fail(
msg_prefix + "The field '%s' on form '%s' in context %d contains no errors" %
(field, form, i)
)
else:
self.fail(
msg_prefix + "The form '%s' in context %d does not contain the field '%s'" %
(form, i, field)
)
else:
non_field_errors = context[form].non_field_errors()
self.assertTrue(
err in non_field_errors,
msg_prefix + "The form '%s' in context %d does not"
" contain the non-field error '%s'"
" (actual errors: %s)" %
(form, i, err, non_field_errors or 'none')
)
if not found_form:
self.fail(msg_prefix + "The form '%s' was not used to render the response" % form)
def assertFormsetError(self, response, formset, form_index, field, errors,
msg_prefix=''):
"""
Assert that a formset used to render the response has a specific error.
For field errors, specify the ``form_index`` and the ``field``.
For non-field errors, specify the ``form_index`` and the ``field`` as
None.
For non-form errors, specify ``form_index`` as None and the ``field``
as None.
"""
self._check_test_client_response(response, 'context', 'assertFormsetError')
# Add punctuation to msg_prefix
if msg_prefix:
msg_prefix += ": "
# Put context(s) into a list to simplify processing.
contexts = to_list(response.context)
if not contexts:
self.fail(msg_prefix + 'Response did not use any contexts to '
'render the response')
# Put error(s) into a list to simplify processing.
errors = to_list(errors)
# Search all contexts for the error.
found_formset = False
for i, context in enumerate(contexts):
if formset not in context or not hasattr(context[formset], 'forms'):
continue
found_formset = True
for err in errors:
if field is not None:
if field in context[formset].forms[form_index].errors:
field_errors = context[formset].forms[form_index].errors[field]
self.assertTrue(
err in field_errors,
msg_prefix + "The field '%s' on formset '%s', "
"form %d in context %d does not contain the "
"error '%s' (actual errors: %s)" %
(field, formset, form_index, i, err, repr(field_errors))
)
elif field in context[formset].forms[form_index].fields:
self.fail(
msg_prefix + "The field '%s' on formset '%s', form %d in context %d contains no errors"
% (field, formset, form_index, i)
)
else:
self.fail(
msg_prefix + "The formset '%s', form %d in context %d does not contain the field '%s'"
% (formset, form_index, i, field)
)
elif form_index is not None:
non_field_errors = context[formset].forms[form_index].non_field_errors()
self.assertFalse(
not non_field_errors,
msg_prefix + "The formset '%s', form %d in context %d "
"does not contain any non-field errors." % (formset, form_index, i)
)
self.assertTrue(
err in non_field_errors,
msg_prefix + "The formset '%s', form %d in context %d "
"does not contain the non-field error '%s' (actual errors: %s)"
% (formset, form_index, i, err, repr(non_field_errors))
)
else:
non_form_errors = context[formset].non_form_errors()
self.assertFalse(
not non_form_errors,
msg_prefix + "The formset '%s' in context %d does not "
"contain any non-form errors." % (formset, i)
)
self.assertTrue(
err in non_form_errors,
msg_prefix + "The formset '%s' in context %d does not "
"contain the non-form error '%s' (actual errors: %s)"
% (formset, i, err, repr(non_form_errors))
)
if not found_formset:
self.fail(msg_prefix + "The formset '%s' was not used to render the response" % formset)
def _assert_template_used(self, response, template_name, msg_prefix, method_name):
if response is None and template_name is None:
raise TypeError('response and/or template_name argument must be provided')
if msg_prefix:
msg_prefix += ": "
if template_name is not None and response is not None:
self._check_test_client_response(response, 'templates', method_name)
if not hasattr(response, 'templates') or (response is None and template_name):
if response:
template_name = response
response = None
# use this template with context manager
return template_name, None, msg_prefix
template_names = [t.name for t in response.templates if t.name is not None]
return None, template_names, msg_prefix
def assertTemplateUsed(self, response=None, template_name=None, msg_prefix='', count=None):
"""
Assert that the template with the provided name was used in rendering
the response. Also usable as context manager.
"""
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
response, template_name, msg_prefix, 'assertTemplateUsed',
)
if context_mgr_template:
# Use assertTemplateUsed as context manager.
return _AssertTemplateUsedContext(self, context_mgr_template)
if not template_names:
self.fail(msg_prefix + "No templates used to render the response")
self.assertTrue(
template_name in template_names,
msg_prefix + "Template '%s' was not a template used to render"
" the response. Actual template(s) used: %s"
% (template_name, ', '.join(template_names))
)
if count is not None:
self.assertEqual(
template_names.count(template_name), count,
msg_prefix + "Template '%s' was expected to be rendered %d "
"time(s) but was actually rendered %d time(s)."
% (template_name, count, template_names.count(template_name))
)
def assertTemplateNotUsed(self, response=None, template_name=None, msg_prefix=''):
"""
Assert that the template with the provided name was NOT used in
rendering the response. Also usable as context manager.
"""
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
response, template_name, msg_prefix, 'assertTemplateNotUsed',
)
if context_mgr_template:
# Use assertTemplateNotUsed as context manager.
return _AssertTemplateNotUsedContext(self, context_mgr_template)
self.assertFalse(
template_name in template_names,
msg_prefix + "Template '%s' was used unexpectedly in rendering the response" % template_name
)
@contextmanager
def _assert_raises_or_warns_cm(self, func, cm_attr, expected_exception, expected_message):
with func(expected_exception) as cm:
yield cm
self.assertIn(expected_message, str(getattr(cm, cm_attr)))
def _assertFooMessage(self, func, cm_attr, expected_exception, expected_message, *args, **kwargs):
callable_obj = None
if args:
callable_obj, *args = args
cm = self._assert_raises_or_warns_cm(func, cm_attr, expected_exception, expected_message)
# Assertion used in context manager fashion.
if callable_obj is None:
return cm
# Assertion was passed a callable.
with cm:
callable_obj(*args, **kwargs)
def assertRaisesMessage(self, expected_exception, expected_message, *args, **kwargs):
"""
Assert that expected_message is found in the message of a raised
exception.
Args:
expected_exception: Exception class expected to be raised.
expected_message: expected error message string value.
args: Function to be called and extra positional args.
kwargs: Extra kwargs.
"""
return self._assertFooMessage(
self.assertRaises, 'exception', expected_exception, expected_message,
*args, **kwargs
)
def assertWarnsMessage(self, expected_warning, expected_message, *args, **kwargs):
"""
Same as assertRaisesMessage but for assertWarns() instead of
assertRaises().
"""
return self._assertFooMessage(
self.assertWarns, 'warning', expected_warning, expected_message,
*args, **kwargs
)
# A similar method is available in Python 3.10+.
if not PY310:
@contextmanager
def assertNoLogs(self, logger, level=None):
"""
Assert no messages are logged on the logger, with at least the
given level.
"""
if isinstance(level, int):
level = logging.getLevelName(level)
elif level is None:
level = 'INFO'
try:
with self.assertLogs(logger, level) as cm:
yield
except AssertionError as e:
msg = e.args[0]
expected_msg = f'no logs of level {level} or higher triggered on {logger}'
if msg != expected_msg:
raise e
else:
self.fail(f'Unexpected logs found: {cm.output!r}')
def assertFieldOutput(self, fieldclass, valid, invalid, field_args=None,
field_kwargs=None, empty_value=''):
"""
Assert that a form field behaves correctly with various inputs.
Args:
fieldclass: the class of the field to be tested.
valid: a dictionary mapping valid inputs to their expected
cleaned values.
invalid: a dictionary mapping invalid inputs to one or more
raised error messages.
field_args: the args passed to instantiate the field
field_kwargs: the kwargs passed to instantiate the field
empty_value: the expected clean output for inputs in empty_values
"""
if field_args is None:
field_args = []
if field_kwargs is None:
field_kwargs = {}
required = fieldclass(*field_args, **field_kwargs)
optional = fieldclass(*field_args, **{**field_kwargs, 'required': False})
# test valid inputs
for input, output in valid.items():
self.assertEqual(required.clean(input), output)
self.assertEqual(optional.clean(input), output)
# test invalid inputs
for input, errors in invalid.items():
with self.assertRaises(ValidationError) as context_manager:
required.clean(input)
self.assertEqual(context_manager.exception.messages, errors)
with self.assertRaises(ValidationError) as context_manager:
optional.clean(input)
self.assertEqual(context_manager.exception.messages, errors)
# test required inputs
error_required = [required.error_messages['required']]
for e in required.empty_values:
with self.assertRaises(ValidationError) as context_manager:
required.clean(e)
self.assertEqual(context_manager.exception.messages, error_required)
self.assertEqual(optional.clean(e), empty_value)
# test that max_length and min_length are always accepted
if issubclass(fieldclass, CharField):
field_kwargs.update({'min_length': 2, 'max_length': 20})
self.assertIsInstance(fieldclass(*field_args, **field_kwargs), fieldclass)
def assertHTMLEqual(self, html1, html2, msg=None):
"""
Assert that two HTML snippets are semantically the same.
Whitespace in most cases is ignored, and attribute ordering is not
significant. The arguments must be valid HTML.
"""
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
if dom1 != dom2:
standardMsg = '%s != %s' % (
safe_repr(dom1, True), safe_repr(dom2, True))
diff = ('\n' + '\n'.join(difflib.ndiff(
str(dom1).splitlines(), str(dom2).splitlines(),
)))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertHTMLNotEqual(self, html1, html2, msg=None):
"""Assert that two HTML snippets are not semantically equivalent."""
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
if dom1 == dom2:
standardMsg = '%s == %s' % (
safe_repr(dom1, True), safe_repr(dom2, True))
self.fail(self._formatMessage(msg, standardMsg))
def assertInHTML(self, needle, haystack, count=None, msg_prefix=''):
needle = assert_and_parse_html(self, needle, None, 'First argument is not valid HTML:')
haystack = assert_and_parse_html(self, haystack, None, 'Second argument is not valid HTML:')
real_count = haystack.count(needle)
if count is not None:
self.assertEqual(
real_count, count,
msg_prefix + "Found %d instances of '%s' in response (expected %d)" % (real_count, needle, count)
)
else:
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find '%s' in response" % needle)
def assertJSONEqual(self, raw, expected_data, msg=None):
"""
Assert that the JSON fragments raw and expected_data are equal.
Usual JSON non-significant whitespace rules apply as the heavyweight
is delegated to the json library.
"""
try:
data = json.loads(raw)
except json.JSONDecodeError:
self.fail("First argument is not valid JSON: %r" % raw)
if isinstance(expected_data, str):
try:
expected_data = json.loads(expected_data)
except ValueError:
self.fail("Second argument is not valid JSON: %r" % expected_data)
self.assertEqual(data, expected_data, msg=msg)
def assertJSONNotEqual(self, raw, expected_data, msg=None):
"""
Assert that the JSON fragments raw and expected_data are not equal.
Usual JSON non-significant whitespace rules apply as the heavyweight
is delegated to the json library.
"""
try:
data = json.loads(raw)
except json.JSONDecodeError:
self.fail("First argument is not valid JSON: %r" % raw)
if isinstance(expected_data, str):
try:
expected_data = json.loads(expected_data)
except json.JSONDecodeError:
self.fail("Second argument is not valid JSON: %r" % expected_data)
self.assertNotEqual(data, expected_data, msg=msg)
def assertXMLEqual(self, xml1, xml2, msg=None):
"""
Assert that two XML snippets are semantically the same.
Whitespace in most cases is ignored and attribute ordering is not
significant. The arguments must be valid XML.
"""
try:
result = compare_xml(xml1, xml2)
except Exception as e:
standardMsg = 'First or second argument is not valid XML\n%s' % e
self.fail(self._formatMessage(msg, standardMsg))
else:
if not result:
standardMsg = '%s != %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
diff = ('\n' + '\n'.join(
difflib.ndiff(xml1.splitlines(), xml2.splitlines())
))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertXMLNotEqual(self, xml1, xml2, msg=None):
"""
Assert that two XML snippets are not semantically equivalent.
Whitespace in most cases is ignored and attribute ordering is not
significant. The arguments must be valid XML.
"""
try:
result = compare_xml(xml1, xml2)
except Exception as e:
standardMsg = 'First or second argument is not valid XML\n%s' % e
self.fail(self._formatMessage(msg, standardMsg))
else:
if result:
standardMsg = '%s == %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
self.fail(self._formatMessage(msg, standardMsg))
class TransactionTestCase(SimpleTestCase):
# Subclasses can ask for resetting of auto increment sequence before each
# test case
reset_sequences = False
# Subclasses can enable only a subset of apps for faster tests
available_apps = None
# Subclasses can define fixtures which will be automatically installed.
fixtures = None
databases = {DEFAULT_DB_ALIAS}
_disallowed_database_msg = (
'Database %(operation)s to %(alias)r are not allowed in this test. '
'Add %(alias)r to %(test)s.databases to ensure proper test isolation '
'and silence this failure.'
)
# If transactions aren't available, Django will serialize the database
# contents into a fixture during setup and flush and reload them
# during teardown (as flush does not restore data from migrations).
# This can be slow; this flag allows enabling on a per-case basis.
serialized_rollback = False
def _pre_setup(self):
"""
Perform pre-test setup:
* If the class has an 'available_apps' attribute, restrict the app
registry to these applications, then fire the post_migrate signal --
it must run with the correct set of applications for the test case.
* If the class has a 'fixtures' attribute, install those fixtures.
"""
super()._pre_setup()
if self.available_apps is not None:
apps.set_available_apps(self.available_apps)
setting_changed.send(
sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=self.available_apps,
enter=True,
)
for db_name in self._databases_names(include_mirrors=False):
emit_post_migrate_signal(verbosity=0, interactive=False, db=db_name)
try:
self._fixture_setup()
except Exception:
if self.available_apps is not None:
apps.unset_available_apps()
setting_changed.send(
sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=settings.INSTALLED_APPS,
enter=False,
)
raise
# Clear the queries_log so that it's less likely to overflow (a single
# test probably won't execute 9K queries). If queries_log overflows,
# then assertNumQueries() doesn't work.
for db_name in self._databases_names(include_mirrors=False):
connections[db_name].queries_log.clear()
@classmethod
def _databases_names(cls, include_mirrors=True):
# Only consider allowed database aliases, including mirrors or not.
return [
alias for alias in connections
if alias in cls.databases and (
include_mirrors or not connections[alias].settings_dict['TEST']['MIRROR']
)
]
def _reset_sequences(self, db_name):
conn = connections[db_name]
if conn.features.supports_sequence_reset:
sql_list = conn.ops.sequence_reset_by_name_sql(
no_style(), conn.introspection.sequence_list())
if sql_list:
with transaction.atomic(using=db_name):
with conn.cursor() as cursor:
for sql in sql_list:
cursor.execute(sql)
def _fixture_setup(self):
for db_name in self._databases_names(include_mirrors=False):
# Reset sequences
if self.reset_sequences:
self._reset_sequences(db_name)
# Provide replica initial data from migrated apps, if needed.
if self.serialized_rollback and hasattr(connections[db_name], "_test_serialized_contents"):
if self.available_apps is not None:
apps.unset_available_apps()
connections[db_name].creation.deserialize_db_from_string(
connections[db_name]._test_serialized_contents
)
if self.available_apps is not None:
apps.set_available_apps(self.available_apps)
if self.fixtures:
# We have to use this slightly awkward syntax due to the fact
# that we're using *args and **kwargs together.
call_command('loaddata', *self.fixtures,
**{'verbosity': 0, 'database': db_name})
def _should_reload_connections(self):
return True
def _post_teardown(self):
"""
Perform post-test things:
* Flush the contents of the database to leave a clean slate. If the
class has an 'available_apps' attribute, don't fire post_migrate.
* Force-close the connection so the next test gets a clean cursor.
"""
try:
self._fixture_teardown()
super()._post_teardown()
if self._should_reload_connections():
# Some DB cursors include SQL statements as part of cursor
# creation. If you have a test that does a rollback, the effect
# of these statements is lost, which can affect the operation of
# tests (e.g., losing a timezone setting causing objects to be
# created with the wrong time). To make sure this doesn't
# happen, get a clean connection at the start of every test.
for conn in connections.all():
conn.close()
finally:
if self.available_apps is not None:
apps.unset_available_apps()
setting_changed.send(sender=settings._wrapped.__class__,
setting='INSTALLED_APPS',
value=settings.INSTALLED_APPS,
enter=False)
def _fixture_teardown(self):
# Allow TRUNCATE ... CASCADE and don't emit the post_migrate signal
# when flushing only a subset of the apps
for db_name in self._databases_names(include_mirrors=False):
# Flush the database
inhibit_post_migrate = (
self.available_apps is not None or
( # Inhibit the post_migrate signal when using serialized
# rollback to avoid trying to recreate the serialized data.
self.serialized_rollback and
hasattr(connections[db_name], '_test_serialized_contents')
)
)
call_command('flush', verbosity=0, interactive=False,
database=db_name, reset_sequences=False,
allow_cascade=self.available_apps is not None,
inhibit_post_migrate=inhibit_post_migrate)
def assertQuerysetEqual(self, qs, values, transform=None, ordered=True, msg=None):
values = list(values)
items = qs
if transform is not None:
items = map(transform, items)
if not ordered:
return self.assertDictEqual(Counter(items), Counter(values), msg=msg)
# For example qs.iterator() could be passed as qs, but it does not
# have 'ordered' attribute.
if len(values) > 1 and hasattr(qs, 'ordered') and not qs.ordered:
raise ValueError(
'Trying to compare non-ordered queryset against more than one '
'ordered value.'
)
return self.assertEqual(list(items), values, msg=msg)
def assertNumQueries(self, num, func=None, *args, using=DEFAULT_DB_ALIAS, **kwargs):
conn = connections[using]
context = _AssertNumQueriesContext(self, num, conn)
if func is None:
return context
with context:
func(*args, **kwargs)
def connections_support_transactions(aliases=None):
"""
Return whether or not all (or specified) connections support
transactions.
"""
conns = connections.all() if aliases is None else (connections[alias] for alias in aliases)
return all(conn.features.supports_transactions for conn in conns)
class TestData:
"""
Descriptor to provide TestCase instance isolation for attributes assigned
during the setUpTestData() phase.
Allow safe alteration of objects assigned in setUpTestData() by test
methods by exposing deep copies instead of the original objects.
Objects are deep copied using a memo kept on the test case instance in
order to maintain their original relationships.
"""
memo_attr = '_testdata_memo'
def __init__(self, name, data):
self.name = name
self.data = data
def get_memo(self, testcase):
try:
memo = getattr(testcase, self.memo_attr)
except AttributeError:
memo = {}
setattr(testcase, self.memo_attr, memo)
return memo
def __get__(self, instance, owner):
if instance is None:
return self.data
memo = self.get_memo(instance)
data = deepcopy(self.data, memo)
setattr(instance, self.name, data)
return data
def __repr__(self):
return '<TestData: name=%r, data=%r>' % (self.name, self.data)
class TestCase(TransactionTestCase):
"""
Similar to TransactionTestCase, but use `transaction.atomic()` to achieve
test isolation.
In most situations, TestCase should be preferred to TransactionTestCase as
it allows faster execution. However, there are some situations where using
TransactionTestCase might be necessary (e.g. testing some transactional
behavior).
On database backends with no transaction support, TestCase behaves as
TransactionTestCase.
"""
@classmethod
def _enter_atomics(cls):
"""Open atomic blocks for multiple databases."""
atomics = {}
for db_name in cls._databases_names():
atomic = transaction.atomic(using=db_name)
atomic._from_testcase = True
atomic.__enter__()
atomics[db_name] = atomic
return atomics
@classmethod
def _rollback_atomics(cls, atomics):
"""Rollback atomic blocks opened by the previous method."""
for db_name in reversed(cls._databases_names()):
transaction.set_rollback(True, using=db_name)
atomics[db_name].__exit__(None, None, None)
@classmethod
def _databases_support_transactions(cls):
return connections_support_transactions(cls.databases)
@classmethod
def setUpClass(cls):
super().setUpClass()
if not cls._databases_support_transactions():
return
cls.cls_atomics = cls._enter_atomics()
if cls.fixtures:
for db_name in cls._databases_names(include_mirrors=False):
try:
call_command('loaddata', *cls.fixtures, **{'verbosity': 0, 'database': db_name})
except Exception:
cls._rollback_atomics(cls.cls_atomics)
raise
pre_attrs = cls.__dict__.copy()
try:
cls.setUpTestData()
except Exception:
cls._rollback_atomics(cls.cls_atomics)
raise
for name, value in cls.__dict__.items():
if value is not pre_attrs.get(name):
setattr(cls, name, TestData(name, value))
@classmethod
def tearDownClass(cls):
if cls._databases_support_transactions():
cls._rollback_atomics(cls.cls_atomics)
for conn in connections.all():
conn.close()
super().tearDownClass()
@classmethod
def setUpTestData(cls):
"""Load initial data for the TestCase."""
pass
def _should_reload_connections(self):
if self._databases_support_transactions():
return False
return super()._should_reload_connections()
def _fixture_setup(self):
if not self._databases_support_transactions():
# If the backend does not support transactions, we should reload
# class data before each test
self.setUpTestData()
return super()._fixture_setup()
if self.reset_sequences:
raise TypeError('reset_sequences cannot be used on TestCase instances')
self.atomics = self._enter_atomics()
def _fixture_teardown(self):
if not self._databases_support_transactions():
return super()._fixture_teardown()
try:
for db_name in reversed(self._databases_names()):
if self._should_check_constraints(connections[db_name]):
connections[db_name].check_constraints()
finally:
self._rollback_atomics(self.atomics)
def _should_check_constraints(self, connection):
return (
connection.features.can_defer_constraint_checks and
not connection.needs_rollback and connection.is_usable()
)
@classmethod
@contextmanager
def captureOnCommitCallbacks(cls, *, using=DEFAULT_DB_ALIAS, execute=False):
"""Context manager to capture transaction.on_commit() callbacks."""
callbacks = []
start_count = len(connections[using].run_on_commit)
try:
yield callbacks
finally:
callback_count = len(connections[using].run_on_commit)
while True:
run_on_commit = connections[using].run_on_commit[start_count:]
callbacks[:] = [func for sids, func in run_on_commit]
if execute:
for callback in callbacks:
callback()
if callback_count == len(connections[using].run_on_commit):
break
start_count = callback_count - 1
callback_count = len(connections[using].run_on_commit)
class CheckCondition:
"""Descriptor class for deferred condition checking."""
def __init__(self, *conditions):
self.conditions = conditions
def add_condition(self, condition, reason):
return self.__class__(*self.conditions, (condition, reason))
def __get__(self, instance, cls=None):
# Trigger access for all bases.
if any(getattr(base, '__unittest_skip__', False) for base in cls.__bases__):
return True
for condition, reason in self.conditions:
if condition():
# Override this descriptor's value and set the skip reason.
cls.__unittest_skip__ = True
cls.__unittest_skip_why__ = reason
return True
return False
def _deferredSkip(condition, reason, name):
def decorator(test_func):
nonlocal condition
if not (isinstance(test_func, type) and
issubclass(test_func, unittest.TestCase)):
@wraps(test_func)
def skip_wrapper(*args, **kwargs):
if (args and isinstance(args[0], unittest.TestCase) and
connection.alias not in getattr(args[0], 'databases', {})):
raise ValueError(
"%s cannot be used on %s as %s doesn't allow queries "
"against the %r database." % (
name,
args[0],
args[0].__class__.__qualname__,
connection.alias,
)
)
if condition():
raise unittest.SkipTest(reason)
return test_func(*args, **kwargs)
test_item = skip_wrapper
else:
# Assume a class is decorated
test_item = test_func
databases = getattr(test_item, 'databases', None)
if not databases or connection.alias not in databases:
# Defer raising to allow importing test class's module.
def condition():
raise ValueError(
"%s cannot be used on %s as it doesn't allow queries "
"against the '%s' database." % (
name, test_item, connection.alias,
)
)
# Retrieve the possibly existing value from the class's dict to
# avoid triggering the descriptor.
skip = test_func.__dict__.get('__unittest_skip__')
if isinstance(skip, CheckCondition):
test_item.__unittest_skip__ = skip.add_condition(condition, reason)
elif skip is not True:
test_item.__unittest_skip__ = CheckCondition((condition, reason))
return test_item
return decorator
def skipIfDBFeature(*features):
"""Skip a test if a database has at least one of the named features."""
return _deferredSkip(
lambda: any(getattr(connection.features, feature, False) for feature in features),
"Database has feature(s) %s" % ", ".join(features),
'skipIfDBFeature',
)
def skipUnlessDBFeature(*features):
"""Skip a test unless a database has all the named features."""
return _deferredSkip(
lambda: not all(getattr(connection.features, feature, False) for feature in features),
"Database doesn't support feature(s): %s" % ", ".join(features),
'skipUnlessDBFeature',
)
def skipUnlessAnyDBFeature(*features):
"""Skip a test unless a database has any of the named features."""
return _deferredSkip(
lambda: not any(getattr(connection.features, feature, False) for feature in features),
"Database doesn't support any of the feature(s): %s" % ", ".join(features),
'skipUnlessAnyDBFeature',
)
class QuietWSGIRequestHandler(WSGIRequestHandler):
"""
A WSGIRequestHandler that doesn't log to standard output any of the
requests received, so as to not clutter the test result output.
"""
def log_message(*args):
pass
class FSFilesHandler(WSGIHandler):
"""
WSGI middleware that intercepts calls to a directory, as defined by one of
the *_ROOT settings, and serves those files, publishing them under *_URL.
"""
def __init__(self, application):
self.application = application
self.base_url = urlparse(self.get_base_url())
super().__init__()
def _should_handle(self, path):
"""
Check if the path should be handled. Ignore the path if:
* the host is provided as part of the base_url
* the request's path isn't under the media path (or equal)
"""
return path.startswith(self.base_url[2]) and not self.base_url[1]
def file_path(self, url):
"""Return the relative path to the file on disk for the given URL."""
relative_url = url[len(self.base_url[2]):]
return url2pathname(relative_url)
def get_response(self, request):
from django.http import Http404
if self._should_handle(request.path):
try:
return self.serve(request)
except Http404:
pass
return super().get_response(request)
def serve(self, request):
os_rel_path = self.file_path(request.path)
os_rel_path = posixpath.normpath(unquote(os_rel_path))
# Emulate behavior of django.contrib.staticfiles.views.serve() when it
# invokes staticfiles' finders functionality.
# TODO: Modify if/when that internal API is refactored
final_rel_path = os_rel_path.replace('\\', '/').lstrip('/')
return serve(request, final_rel_path, document_root=self.get_base_dir())
def __call__(self, environ, start_response):
if not self._should_handle(get_path_info(environ)):
return self.application(environ, start_response)
return super().__call__(environ, start_response)
class _StaticFilesHandler(FSFilesHandler):
"""
Handler for serving static files. A private class that is meant to be used
solely as a convenience by LiveServerThread.
"""
def get_base_dir(self):
return settings.STATIC_ROOT
def get_base_url(self):
return settings.STATIC_URL
class _MediaFilesHandler(FSFilesHandler):
"""
Handler for serving the media files. A private class that is meant to be
used solely as a convenience by LiveServerThread.
"""
def get_base_dir(self):
return settings.MEDIA_ROOT
def get_base_url(self):
return settings.MEDIA_URL
class LiveServerThread(threading.Thread):
"""Thread for running a live HTTP server while the tests are running."""
server_class = ThreadedWSGIServer
def __init__(self, host, static_handler, connections_override=None, port=0):
self.host = host
self.port = port
self.is_ready = threading.Event()
self.error = None
self.static_handler = static_handler
self.connections_override = connections_override
super().__init__()
def run(self):
"""
Set up the live server and databases, and then loop over handling
HTTP requests.
"""
if self.connections_override:
# Override this thread's database connections with the ones
# provided by the main thread.
for alias, conn in self.connections_override.items():
connections[alias] = conn
try:
# Create the handler for serving static and media files
handler = self.static_handler(_MediaFilesHandler(WSGIHandler()))
self.httpd = self._create_server()
# If binding to port zero, assign the port allocated by the OS.
if self.port == 0:
self.port = self.httpd.server_address[1]
self.httpd.set_app(handler)
self.is_ready.set()
self.httpd.serve_forever()
except Exception as e:
self.error = e
self.is_ready.set()
finally:
connections.close_all()
def _create_server(self, connections_override=None):
return self.server_class(
(self.host, self.port),
QuietWSGIRequestHandler,
allow_reuse_address=False,
connections_override=connections_override,
)
def terminate(self):
if hasattr(self, 'httpd'):
# Stop the WSGI server
self.httpd.shutdown()
self.httpd.server_close()
self.join()
class LiveServerTestCase(TransactionTestCase):
"""
Do basically the same as TransactionTestCase but also launch a live HTTP
server in a separate thread so that the tests may use another testing
framework, such as Selenium for example, instead of the built-in dummy
client.
It inherits from TransactionTestCase instead of TestCase because the
threads don't share the same transactions (unless if using in-memory sqlite)
and each thread needs to commit all their transactions so that the other
thread can see the changes.
"""
host = 'localhost'
port = 0
server_thread_class = LiveServerThread
static_handler = _StaticFilesHandler
@classproperty
def live_server_url(cls):
return 'http://%s:%s' % (cls.host, cls.server_thread.port)
@classproperty
def allowed_host(cls):
return cls.host
@classmethod
def _make_connections_override(cls):
connections_override = {}
for conn in connections.all():
# If using in-memory sqlite databases, pass the connections to
# the server thread.
if conn.vendor == 'sqlite' and conn.is_in_memory_db():
connections_override[conn.alias] = conn
return connections_override
@classmethod
def setUpClass(cls):
super().setUpClass()
cls._live_server_modified_settings = modify_settings(
ALLOWED_HOSTS={'append': cls.allowed_host},
)
cls._live_server_modified_settings.enable()
cls.addClassCleanup(cls._live_server_modified_settings.disable)
cls._start_server_thread()
@classmethod
def _start_server_thread(cls):
connections_override = cls._make_connections_override()
for conn in connections_override.values():
# Explicitly enable thread-shareability for this connection.
conn.inc_thread_sharing()
cls.server_thread = cls._create_server_thread(connections_override)
cls.server_thread.daemon = True
cls.server_thread.start()
cls.addClassCleanup(cls._terminate_thread)
# Wait for the live server to be ready
cls.server_thread.is_ready.wait()
if cls.server_thread.error:
raise cls.server_thread.error
@classmethod
def _create_server_thread(cls, connections_override):
return cls.server_thread_class(
cls.host,
cls.static_handler,
connections_override=connections_override,
port=cls.port,
)
@classmethod
def _terminate_thread(cls):
# Terminate the live server's thread.
cls.server_thread.terminate()
# Restore shared connections' non-shareability.
for conn in cls.server_thread.connections_override.values():
conn.dec_thread_sharing()
class SerializeMixin:
"""
Enforce serialization of TestCases that share a common resource.
Define a common 'lockfile' for each set of TestCases to serialize. This
file must exist on the filesystem.
Place it early in the MRO in order to isolate setUpClass()/tearDownClass().
"""
lockfile = None
def __init_subclass__(cls, /, **kwargs):
super().__init_subclass__(**kwargs)
if cls.lockfile is None:
raise ValueError(
"{}.lockfile isn't set. Set it to a unique value "
"in the base class.".format(cls.__name__))
@classmethod
def setUpClass(cls):
cls._lockfile = open(cls.lockfile)
cls.addClassCleanup(cls._lockfile.close)
locks.lock(cls._lockfile, locks.LOCK_EX)
super().setUpClass()
|
3f6010149187926c823ecaf41696e1f351e270714f19fb707abe19720decf3c0 | import html.entities
import re
import unicodedata
from gzip import GzipFile, compress as gzip_compress
from io import BytesIO
from django.core.exceptions import SuspiciousFileOperation
from django.utils.functional import SimpleLazyObject, keep_lazy_text, lazy
from django.utils.regex_helper import _lazy_re_compile
from django.utils.translation import gettext as _, gettext_lazy, pgettext
@keep_lazy_text
def capfirst(x):
"""Capitalize the first letter of a string."""
if not x:
return x
if not isinstance(x, str):
x = str(x)
return x[0].upper() + x[1:]
# Set up regular expressions
re_words = _lazy_re_compile(r'<[^>]+?>|([^<>\s]+)', re.S)
re_chars = _lazy_re_compile(r'<[^>]+?>|(.)', re.S)
re_tag = _lazy_re_compile(r'<(/)?(\S+?)(?:(\s*/)|\s.*?)?>', re.S)
re_newlines = _lazy_re_compile(r'\r\n|\r') # Used in normalize_newlines
re_camel_case = _lazy_re_compile(r'(((?<=[a-z])[A-Z])|([A-Z](?![A-Z]|$)))')
@keep_lazy_text
def wrap(text, width):
"""
A word-wrap function that preserves existing line breaks. Expects that
existing line breaks are posix newlines.
Preserve all white space except added line breaks consume the space on
which they break the line.
Don't wrap long words, thus the output text may have lines longer than
``width``.
"""
def _generator():
for line in text.splitlines(True): # True keeps trailing linebreaks
max_width = min((line.endswith('\n') and width + 1 or width), width)
while len(line) > max_width:
space = line[:max_width + 1].rfind(' ') + 1
if space == 0:
space = line.find(' ') + 1
if space == 0:
yield line
line = ''
break
yield '%s\n' % line[:space - 1]
line = line[space:]
max_width = min((line.endswith('\n') and width + 1 or width), width)
if line:
yield line
return ''.join(_generator())
class Truncator(SimpleLazyObject):
"""
An object used to truncate text, either by characters or words.
"""
def __init__(self, text):
super().__init__(lambda: str(text))
def add_truncation_text(self, text, truncate=None):
if truncate is None:
truncate = pgettext(
'String to return when truncating text',
'%(truncated_text)s…')
if '%(truncated_text)s' in truncate:
return truncate % {'truncated_text': text}
# The truncation text didn't contain the %(truncated_text)s string
# replacement argument so just append it to the text.
if text.endswith(truncate):
# But don't append the truncation text if the current text already
# ends in this.
return text
return '%s%s' % (text, truncate)
def chars(self, num, truncate=None, html=False):
"""
Return the text truncated to be no longer than the specified number
of characters.
`truncate` specifies what should be used to notify that the string has
been truncated, defaulting to a translatable string of an ellipsis.
"""
self._setup()
length = int(num)
text = unicodedata.normalize('NFC', self._wrapped)
# Calculate the length to truncate to (max length - end_text length)
truncate_len = length
for char in self.add_truncation_text('', truncate):
if not unicodedata.combining(char):
truncate_len -= 1
if truncate_len == 0:
break
if html:
return self._truncate_html(length, truncate, text, truncate_len, False)
return self._text_chars(length, truncate, text, truncate_len)
def _text_chars(self, length, truncate, text, truncate_len):
"""Truncate a string after a certain number of chars."""
s_len = 0
end_index = None
for i, char in enumerate(text):
if unicodedata.combining(char):
# Don't consider combining characters
# as adding to the string length
continue
s_len += 1
if end_index is None and s_len > truncate_len:
end_index = i
if s_len > length:
# Return the truncated string
return self.add_truncation_text(text[:end_index or 0],
truncate)
# Return the original string since no truncation was necessary
return text
def words(self, num, truncate=None, html=False):
"""
Truncate a string after a certain number of words. `truncate` specifies
what should be used to notify that the string has been truncated,
defaulting to ellipsis.
"""
self._setup()
length = int(num)
if html:
return self._truncate_html(length, truncate, self._wrapped, length, True)
return self._text_words(length, truncate)
def _text_words(self, length, truncate):
"""
Truncate a string after a certain number of words.
Strip newlines in the string.
"""
words = self._wrapped.split()
if len(words) > length:
words = words[:length]
return self.add_truncation_text(' '.join(words), truncate)
return ' '.join(words)
def _truncate_html(self, length, truncate, text, truncate_len, words):
"""
Truncate HTML to a certain number of chars (not counting tags and
comments), or, if words is True, then to a certain number of words.
Close opened tags if they were correctly closed in the given HTML.
Preserve newlines in the HTML.
"""
if words and length <= 0:
return ''
html4_singlets = (
'br', 'col', 'link', 'base', 'img',
'param', 'area', 'hr', 'input'
)
# Count non-HTML chars/words and keep note of open tags
pos = 0
end_text_pos = 0
current_len = 0
open_tags = []
regex = re_words if words else re_chars
while current_len <= length:
m = regex.search(text, pos)
if not m:
# Checked through whole string
break
pos = m.end(0)
if m[1]:
# It's an actual non-HTML word or char
current_len += 1
if current_len == truncate_len:
end_text_pos = pos
continue
# Check for tag
tag = re_tag.match(m[0])
if not tag or current_len >= truncate_len:
# Don't worry about non tags or tags after our truncate point
continue
closing_tag, tagname, self_closing = tag.groups()
# Element names are always case-insensitive
tagname = tagname.lower()
if self_closing or tagname in html4_singlets:
pass
elif closing_tag:
# Check for match in open tags list
try:
i = open_tags.index(tagname)
except ValueError:
pass
else:
# SGML: An end tag closes, back to the matching start tag,
# all unclosed intervening start tags with omitted end tags
open_tags = open_tags[i + 1:]
else:
# Add it to the start of the open tags list
open_tags.insert(0, tagname)
if current_len <= length:
return text
out = text[:end_text_pos]
truncate_text = self.add_truncation_text('', truncate)
if truncate_text:
out += truncate_text
# Close any tags still open
for tag in open_tags:
out += '</%s>' % tag
# Return string
return out
@keep_lazy_text
def get_valid_filename(name):
"""
Return the given string converted to a string that can be used for a clean
filename. Remove leading and trailing spaces; convert other spaces to
underscores; and remove anything that is not an alphanumeric, dash,
underscore, or dot.
>>> get_valid_filename("john's portrait in 2004.jpg")
'johns_portrait_in_2004.jpg'
"""
s = str(name).strip().replace(' ', '_')
s = re.sub(r'(?u)[^-\w.]', '', s)
if s in {'', '.', '..'}:
raise SuspiciousFileOperation("Could not derive file name from '%s'" % name)
return s
@keep_lazy_text
def get_text_list(list_, last_word=gettext_lazy('or')):
"""
>>> get_text_list(['a', 'b', 'c', 'd'])
'a, b, c or d'
>>> get_text_list(['a', 'b', 'c'], 'and')
'a, b and c'
>>> get_text_list(['a', 'b'], 'and')
'a and b'
>>> get_text_list(['a'])
'a'
>>> get_text_list([])
''
"""
if not list_:
return ''
if len(list_) == 1:
return str(list_[0])
return '%s %s %s' % (
# Translators: This string is used as a separator between list elements
_(', ').join(str(i) for i in list_[:-1]), str(last_word), str(list_[-1])
)
@keep_lazy_text
def normalize_newlines(text):
"""Normalize CRLF and CR newlines to just LF."""
return re_newlines.sub('\n', str(text))
@keep_lazy_text
def phone2numeric(phone):
"""Convert a phone number with letters into its numeric equivalent."""
char2number = {
'a': '2', 'b': '2', 'c': '2', 'd': '3', 'e': '3', 'f': '3', 'g': '4',
'h': '4', 'i': '4', 'j': '5', 'k': '5', 'l': '5', 'm': '6', 'n': '6',
'o': '6', 'p': '7', 'q': '7', 'r': '7', 's': '7', 't': '8', 'u': '8',
'v': '8', 'w': '9', 'x': '9', 'y': '9', 'z': '9',
}
return ''.join(char2number.get(c, c) for c in phone.lower())
def compress_string(s):
return gzip_compress(s, compresslevel=6, mtime=0)
class StreamingBuffer(BytesIO):
def read(self):
ret = self.getvalue()
self.seek(0)
self.truncate()
return ret
# Like compress_string, but for iterators of strings.
def compress_sequence(sequence):
buf = StreamingBuffer()
with GzipFile(mode='wb', compresslevel=6, fileobj=buf, mtime=0) as zfile:
# Output headers...
yield buf.read()
for item in sequence:
zfile.write(item)
data = buf.read()
if data:
yield data
yield buf.read()
# Expression to match some_token and some_token="with spaces" (and similarly
# for single-quoted strings).
smart_split_re = _lazy_re_compile(r"""
((?:
[^\s'"]*
(?:
(?:"(?:[^"\\]|\\.)*" | '(?:[^'\\]|\\.)*')
[^\s'"]*
)+
) | \S+)
""", re.VERBOSE)
def smart_split(text):
r"""
Generator that splits a string by spaces, leaving quoted phrases together.
Supports both single and double quotes, and supports escaping quotes with
backslashes. In the output, strings will keep their initial and trailing
quote marks and escaped quotes will remain escaped (the results can then
be further processed with unescape_string_literal()).
>>> list(smart_split(r'This is "a person\'s" test.'))
['This', 'is', '"a person\\\'s"', 'test.']
>>> list(smart_split(r"Another 'person\'s' test."))
['Another', "'person\\'s'", 'test.']
>>> list(smart_split(r'A "\"funky\" style" test.'))
['A', '"\\"funky\\" style"', 'test.']
"""
for bit in smart_split_re.finditer(str(text)):
yield bit[0]
def _replace_entity(match):
text = match[1]
if text[0] == '#':
text = text[1:]
try:
if text[0] in 'xX':
c = int(text[1:], 16)
else:
c = int(text)
return chr(c)
except ValueError:
return match[0]
else:
try:
return chr(html.entities.name2codepoint[text])
except KeyError:
return match[0]
_entity_re = _lazy_re_compile(r"&(#?[xX]?(?:[0-9a-fA-F]+|\w{1,8}));")
@keep_lazy_text
def unescape_string_literal(s):
r"""
Convert quoted string literals to unquoted strings with escaped quotes and
backslashes unquoted::
>>> unescape_string_literal('"abc"')
'abc'
>>> unescape_string_literal("'abc'")
'abc'
>>> unescape_string_literal('"a \"bc\""')
'a "bc"'
>>> unescape_string_literal("'\'ab\' c'")
"'ab' c"
"""
if not s or s[0] not in "\"'" or s[-1] != s[0]:
raise ValueError("Not a string literal: %r" % s)
quote = s[0]
return s[1:-1].replace(r'\%s' % quote, quote).replace(r'\\', '\\')
@keep_lazy_text
def slugify(value, allow_unicode=False):
"""
Convert to ASCII if 'allow_unicode' is False. Convert spaces or repeated
dashes to single dashes. Remove characters that aren't alphanumerics,
underscores, or hyphens. Convert to lowercase. Also strip leading and
trailing whitespace, dashes, and underscores.
"""
value = str(value)
if allow_unicode:
value = unicodedata.normalize('NFKC', value)
else:
value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore').decode('ascii')
value = re.sub(r'[^\w\s-]', '', value.lower())
return re.sub(r'[-\s]+', '-', value).strip('-_')
def camel_case_to_spaces(value):
"""
Split CamelCase and convert to lowercase. Strip surrounding whitespace.
"""
return re_camel_case.sub(r' \1', value).strip().lower()
def _format_lazy(format_string, *args, **kwargs):
"""
Apply str.format() on 'format_string' where format_string, args,
and/or kwargs might be lazy.
"""
return format_string.format(*args, **kwargs)
format_lazy = lazy(_format_lazy, str)
|
100ec661d431abe1aa140075ba75ab1548d0308b07f26ddf5e4a7a8f560a7046 | """Default variable filters."""
import random as random_module
import re
import types
from decimal import ROUND_HALF_UP, Context, Decimal, InvalidOperation
from functools import wraps
from operator import itemgetter
from pprint import pformat
from urllib.parse import quote
from django.utils import formats
from django.utils.dateformat import format, time_format
from django.utils.encoding import iri_to_uri
from django.utils.html import (
avoid_wrapping, conditional_escape, escape, escapejs,
json_script as _json_script, linebreaks, strip_tags, urlize as _urlize,
)
from django.utils.safestring import SafeData, mark_safe
from django.utils.text import (
Truncator, normalize_newlines, phone2numeric, slugify as _slugify, wrap,
)
from django.utils.timesince import timesince, timeuntil
from django.utils.translation import gettext, ngettext
from .base import Variable, VariableDoesNotExist
from .library import Library
register = Library()
#######################
# STRING DECORATOR #
#######################
def stringfilter(func):
"""
Decorator for filters which should only receive strings. The object
passed as the first positional argument will be converted to a string.
"""
def _dec(*args, **kwargs):
args = list(args)
args[0] = str(args[0])
if (isinstance(args[0], SafeData) and
getattr(_dec._decorated_function, 'is_safe', False)):
return mark_safe(func(*args, **kwargs))
return func(*args, **kwargs)
# Include a reference to the real function (used to check original
# arguments by the template parser, and to bear the 'is_safe' attribute
# when multiple decorators are applied).
_dec._decorated_function = getattr(func, '_decorated_function', func)
return wraps(func)(_dec)
###################
# STRINGS #
###################
@register.filter(is_safe=True)
@stringfilter
def addslashes(value):
"""
Add slashes before quotes. Useful for escaping strings in CSV, for
example. Less useful for escaping JavaScript; use the ``escapejs``
filter instead.
"""
return value.replace('\\', '\\\\').replace('"', '\\"').replace("'", "\\'")
@register.filter(is_safe=True)
@stringfilter
def capfirst(value):
"""Capitalize the first character of the value."""
return value and value[0].upper() + value[1:]
@register.filter("escapejs")
@stringfilter
def escapejs_filter(value):
"""Hex encode characters for use in JavaScript strings."""
return escapejs(value)
@register.filter(is_safe=True)
def json_script(value, element_id=None):
"""
Output value JSON-encoded, wrapped in a <script type="application/json">
tag (with an optional id).
"""
return _json_script(value, element_id)
@register.filter(is_safe=True)
def floatformat(text, arg=-1):
"""
Display a float to a specified number of decimal places.
If called without an argument, display the floating point number with one
decimal place -- but only if there's a decimal place to be displayed:
* num1 = 34.23234
* num2 = 34.00000
* num3 = 34.26000
* {{ num1|floatformat }} displays "34.2"
* {{ num2|floatformat }} displays "34"
* {{ num3|floatformat }} displays "34.3"
If arg is positive, always display exactly arg number of decimal places:
* {{ num1|floatformat:3 }} displays "34.232"
* {{ num2|floatformat:3 }} displays "34.000"
* {{ num3|floatformat:3 }} displays "34.260"
If arg is negative, display arg number of decimal places -- but only if
there are places to be displayed:
* {{ num1|floatformat:"-3" }} displays "34.232"
* {{ num2|floatformat:"-3" }} displays "34"
* {{ num3|floatformat:"-3" }} displays "34.260"
If arg has the 'g' suffix, force the result to be grouped by the
THOUSAND_SEPARATOR for the active locale. When the active locale is
en (English):
* {{ 6666.6666|floatformat:"2g" }} displays "6,666.67"
* {{ 10000|floatformat:"g" }} displays "10,000"
If arg has the 'u' suffix, force the result to be unlocalized. When the
active locale is pl (Polish):
* {{ 66666.6666|floatformat:"2" }} displays "66666,67"
* {{ 66666.6666|floatformat:"2u" }} displays "66666.67"
If the input float is infinity or NaN, display the string representation
of that value.
"""
force_grouping = False
use_l10n = True
if isinstance(arg, str):
last_char = arg[-1]
if arg[-2:] in {'gu', 'ug'}:
force_grouping = True
use_l10n = False
arg = arg[:-2] or -1
elif last_char == 'g':
force_grouping = True
arg = arg[:-1] or -1
elif last_char == 'u':
use_l10n = False
arg = arg[:-1] or -1
try:
input_val = repr(text)
d = Decimal(input_val)
except InvalidOperation:
try:
d = Decimal(str(float(text)))
except (ValueError, InvalidOperation, TypeError):
return ''
try:
p = int(arg)
except ValueError:
return input_val
try:
m = int(d) - d
except (ValueError, OverflowError, InvalidOperation):
return input_val
if not m and p < 0:
return mark_safe(formats.number_format(
'%d' % (int(d)),
0,
use_l10n=use_l10n,
force_grouping=force_grouping,
))
exp = Decimal(1).scaleb(-abs(p))
# Set the precision high enough to avoid an exception (#15789).
tupl = d.as_tuple()
units = len(tupl[1])
units += -tupl[2] if m else tupl[2]
prec = abs(p) + units + 1
# Avoid conversion to scientific notation by accessing `sign`, `digits`,
# and `exponent` from Decimal.as_tuple() directly.
rounded_d = d.quantize(exp, ROUND_HALF_UP, Context(prec=prec))
sign, digits, exponent = rounded_d.as_tuple()
digits = [str(digit) for digit in reversed(digits)]
while len(digits) <= abs(exponent):
digits.append('0')
digits.insert(-exponent, '.')
if sign and rounded_d:
digits.append('-')
number = ''.join(reversed(digits))
return mark_safe(formats.number_format(
number,
abs(p),
use_l10n=use_l10n,
force_grouping=force_grouping,
))
@register.filter(is_safe=True)
@stringfilter
def iriencode(value):
"""Escape an IRI value for use in a URL."""
return iri_to_uri(value)
@register.filter(is_safe=True, needs_autoescape=True)
@stringfilter
def linenumbers(value, autoescape=True):
"""Display text with line numbers."""
lines = value.split('\n')
# Find the maximum width of the line count, for use with zero padding
# string format command
width = str(len(str(len(lines))))
if not autoescape or isinstance(value, SafeData):
for i, line in enumerate(lines):
lines[i] = ("%0" + width + "d. %s") % (i + 1, line)
else:
for i, line in enumerate(lines):
lines[i] = ("%0" + width + "d. %s") % (i + 1, escape(line))
return mark_safe('\n'.join(lines))
@register.filter(is_safe=True)
@stringfilter
def lower(value):
"""Convert a string into all lowercase."""
return value.lower()
@register.filter(is_safe=False)
@stringfilter
def make_list(value):
"""
Return the value turned into a list.
For an integer, it's a list of digits.
For a string, it's a list of characters.
"""
return list(value)
@register.filter(is_safe=True)
@stringfilter
def slugify(value):
"""
Convert to ASCII. Convert spaces to hyphens. Remove characters that aren't
alphanumerics, underscores, or hyphens. Convert to lowercase. Also strip
leading and trailing whitespace.
"""
return _slugify(value)
@register.filter(is_safe=True)
def stringformat(value, arg):
"""
Format the variable according to the arg, a string formatting specifier.
This specifier uses Python string formatting syntax, with the exception
that the leading "%" is dropped.
See https://docs.python.org/library/stdtypes.html#printf-style-string-formatting
for documentation of Python string formatting.
"""
if isinstance(value, tuple):
value = str(value)
try:
return ("%" + str(arg)) % value
except (ValueError, TypeError):
return ""
@register.filter(is_safe=True)
@stringfilter
def title(value):
"""Convert a string into titlecase."""
t = re.sub("([a-z])'([A-Z])", lambda m: m[0].lower(), value.title())
return re.sub(r'\d([A-Z])', lambda m: m[0].lower(), t)
@register.filter(is_safe=True)
@stringfilter
def truncatechars(value, arg):
"""Truncate a string after `arg` number of characters."""
try:
length = int(arg)
except ValueError: # Invalid literal for int().
return value # Fail silently.
return Truncator(value).chars(length)
@register.filter(is_safe=True)
@stringfilter
def truncatechars_html(value, arg):
"""
Truncate HTML after `arg` number of chars.
Preserve newlines in the HTML.
"""
try:
length = int(arg)
except ValueError: # invalid literal for int()
return value # Fail silently.
return Truncator(value).chars(length, html=True)
@register.filter(is_safe=True)
@stringfilter
def truncatewords(value, arg):
"""
Truncate a string after `arg` number of words.
Remove newlines within the string.
"""
try:
length = int(arg)
except ValueError: # Invalid literal for int().
return value # Fail silently.
return Truncator(value).words(length, truncate=' …')
@register.filter(is_safe=True)
@stringfilter
def truncatewords_html(value, arg):
"""
Truncate HTML after `arg` number of words.
Preserve newlines in the HTML.
"""
try:
length = int(arg)
except ValueError: # invalid literal for int()
return value # Fail silently.
return Truncator(value).words(length, html=True, truncate=' …')
@register.filter(is_safe=False)
@stringfilter
def upper(value):
"""Convert a string into all uppercase."""
return value.upper()
@register.filter(is_safe=False)
@stringfilter
def urlencode(value, safe=None):
"""
Escape a value for use in a URL.
The ``safe`` parameter determines the characters which should not be
escaped by Python's quote() function. If not provided, use the default safe
characters (but an empty string can be provided when *all* characters
should be escaped).
"""
kwargs = {}
if safe is not None:
kwargs['safe'] = safe
return quote(value, **kwargs)
@register.filter(is_safe=True, needs_autoescape=True)
@stringfilter
def urlize(value, autoescape=True):
"""Convert URLs in plain text into clickable links."""
return mark_safe(_urlize(value, nofollow=True, autoescape=autoescape))
@register.filter(is_safe=True, needs_autoescape=True)
@stringfilter
def urlizetrunc(value, limit, autoescape=True):
"""
Convert URLs into clickable links, truncating URLs to the given character
limit, and adding 'rel=nofollow' attribute to discourage spamming.
Argument: Length to truncate URLs to.
"""
return mark_safe(_urlize(value, trim_url_limit=int(limit), nofollow=True, autoescape=autoescape))
@register.filter(is_safe=False)
@stringfilter
def wordcount(value):
"""Return the number of words."""
return len(value.split())
@register.filter(is_safe=True)
@stringfilter
def wordwrap(value, arg):
"""Wrap words at `arg` line length."""
return wrap(value, int(arg))
@register.filter(is_safe=True)
@stringfilter
def ljust(value, arg):
"""Left-align the value in a field of a given width."""
return value.ljust(int(arg))
@register.filter(is_safe=True)
@stringfilter
def rjust(value, arg):
"""Right-align the value in a field of a given width."""
return value.rjust(int(arg))
@register.filter(is_safe=True)
@stringfilter
def center(value, arg):
"""Center the value in a field of a given width."""
return value.center(int(arg))
@register.filter
@stringfilter
def cut(value, arg):
"""Remove all values of arg from the given string."""
safe = isinstance(value, SafeData)
value = value.replace(arg, '')
if safe and arg != ';':
return mark_safe(value)
return value
###################
# HTML STRINGS #
###################
@register.filter("escape", is_safe=True)
@stringfilter
def escape_filter(value):
"""Mark the value as a string that should be auto-escaped."""
return conditional_escape(value)
@register.filter(is_safe=True)
@stringfilter
def force_escape(value):
"""
Escape a string's HTML. Return a new string containing the escaped
characters (as opposed to "escape", which marks the content for later
possible escaping).
"""
return escape(value)
@register.filter("linebreaks", is_safe=True, needs_autoescape=True)
@stringfilter
def linebreaks_filter(value, autoescape=True):
"""
Replace line breaks in plain text with appropriate HTML; a single
newline becomes an HTML line break (``<br>``) and a new line
followed by a blank line becomes a paragraph break (``</p>``).
"""
autoescape = autoescape and not isinstance(value, SafeData)
return mark_safe(linebreaks(value, autoescape))
@register.filter(is_safe=True, needs_autoescape=True)
@stringfilter
def linebreaksbr(value, autoescape=True):
"""
Convert all newlines in a piece of plain text to HTML line breaks
(``<br>``).
"""
autoescape = autoescape and not isinstance(value, SafeData)
value = normalize_newlines(value)
if autoescape:
value = escape(value)
return mark_safe(value.replace('\n', '<br>'))
@register.filter(is_safe=True)
@stringfilter
def safe(value):
"""Mark the value as a string that should not be auto-escaped."""
return mark_safe(value)
@register.filter(is_safe=True)
def safeseq(value):
"""
A "safe" filter for sequences. Mark each element in the sequence,
individually, as safe, after converting them to strings. Return a list
with the results.
"""
return [mark_safe(obj) for obj in value]
@register.filter(is_safe=True)
@stringfilter
def striptags(value):
"""Strip all [X]HTML tags."""
return strip_tags(value)
###################
# LISTS #
###################
def _property_resolver(arg):
"""
When arg is convertible to float, behave like operator.itemgetter(arg)
Otherwise, behave like Variable(arg).resolve
>>> _property_resolver(1)('abc')
'b'
>>> _property_resolver('1')('abc')
Traceback (most recent call last):
...
TypeError: string indices must be integers
>>> class Foo:
... a = 42
... b = 3.14
... c = 'Hey!'
>>> _property_resolver('b')(Foo())
3.14
"""
try:
float(arg)
except ValueError:
return Variable(arg).resolve
else:
return itemgetter(arg)
@register.filter(is_safe=False)
def dictsort(value, arg):
"""
Given a list of dicts, return that list sorted by the property given in
the argument.
"""
try:
return sorted(value, key=_property_resolver(arg))
except (TypeError, VariableDoesNotExist):
return ''
@register.filter(is_safe=False)
def dictsortreversed(value, arg):
"""
Given a list of dicts, return that list sorted in reverse order by the
property given in the argument.
"""
try:
return sorted(value, key=_property_resolver(arg), reverse=True)
except (TypeError, VariableDoesNotExist):
return ''
@register.filter(is_safe=False)
def first(value):
"""Return the first item in a list."""
try:
return value[0]
except IndexError:
return ''
@register.filter(is_safe=True, needs_autoescape=True)
def join(value, arg, autoescape=True):
"""Join a list with a string, like Python's ``str.join(list)``."""
try:
if autoescape:
value = [conditional_escape(v) for v in value]
data = conditional_escape(arg).join(value)
except TypeError: # Fail silently if arg isn't iterable.
return value
return mark_safe(data)
@register.filter(is_safe=True)
def last(value):
"""Return the last item in a list."""
try:
return value[-1]
except IndexError:
return ''
@register.filter(is_safe=False)
def length(value):
"""Return the length of the value - useful for lists."""
try:
return len(value)
except (ValueError, TypeError):
return 0
@register.filter(is_safe=False)
def length_is(value, arg):
"""Return a boolean of whether the value's length is the argument."""
try:
return len(value) == int(arg)
except (ValueError, TypeError):
return ''
@register.filter(is_safe=True)
def random(value):
"""Return a random item from the list."""
return random_module.choice(value)
@register.filter("slice", is_safe=True)
def slice_filter(value, arg):
"""
Return a slice of the list using the same syntax as Python's list slicing.
"""
try:
bits = []
for x in str(arg).split(':'):
if not x:
bits.append(None)
else:
bits.append(int(x))
return value[slice(*bits)]
except (ValueError, TypeError):
return value # Fail silently.
@register.filter(is_safe=True, needs_autoescape=True)
def unordered_list(value, autoescape=True):
"""
Recursively take a self-nested list and return an HTML unordered list --
WITHOUT opening and closing <ul> tags.
Assume the list is in the proper format. For example, if ``var`` contains:
``['States', ['Kansas', ['Lawrence', 'Topeka'], 'Illinois']]``, then
``{{ var|unordered_list }}`` returns::
<li>States
<ul>
<li>Kansas
<ul>
<li>Lawrence</li>
<li>Topeka</li>
</ul>
</li>
<li>Illinois</li>
</ul>
</li>
"""
if autoescape:
escaper = conditional_escape
else:
def escaper(x):
return x
def walk_items(item_list):
item_iterator = iter(item_list)
try:
item = next(item_iterator)
while True:
try:
next_item = next(item_iterator)
except StopIteration:
yield item, None
break
if isinstance(next_item, (list, tuple, types.GeneratorType)):
try:
iter(next_item)
except TypeError:
pass
else:
yield item, next_item
item = next(item_iterator)
continue
yield item, None
item = next_item
except StopIteration:
pass
def list_formatter(item_list, tabs=1):
indent = '\t' * tabs
output = []
for item, children in walk_items(item_list):
sublist = ''
if children:
sublist = '\n%s<ul>\n%s\n%s</ul>\n%s' % (
indent, list_formatter(children, tabs + 1), indent, indent)
output.append('%s<li>%s%s</li>' % (
indent, escaper(item), sublist))
return '\n'.join(output)
return mark_safe(list_formatter(value))
###################
# INTEGERS #
###################
@register.filter(is_safe=False)
def add(value, arg):
"""Add the arg to the value."""
try:
return int(value) + int(arg)
except (ValueError, TypeError):
try:
return value + arg
except Exception:
return ''
@register.filter(is_safe=False)
def get_digit(value, arg):
"""
Given a whole number, return the requested digit of it, where 1 is the
right-most digit, 2 is the second-right-most digit, etc. Return the
original value for invalid input (if input or argument is not an integer,
or if argument is less than 1). Otherwise, output is always an integer.
"""
try:
arg = int(arg)
value = int(value)
except ValueError:
return value # Fail silently for an invalid argument
if arg < 1:
return value
try:
return int(str(value)[-arg])
except IndexError:
return 0
###################
# DATES #
###################
@register.filter(expects_localtime=True, is_safe=False)
def date(value, arg=None):
"""Format a date according to the given format."""
if value in (None, ''):
return ''
try:
return formats.date_format(value, arg)
except AttributeError:
try:
return format(value, arg)
except AttributeError:
return ''
@register.filter(expects_localtime=True, is_safe=False)
def time(value, arg=None):
"""Format a time according to the given format."""
if value in (None, ''):
return ''
try:
return formats.time_format(value, arg)
except (AttributeError, TypeError):
try:
return time_format(value, arg)
except (AttributeError, TypeError):
return ''
@register.filter("timesince", is_safe=False)
def timesince_filter(value, arg=None):
"""Format a date as the time since that date (i.e. "4 days, 6 hours")."""
if not value:
return ''
try:
if arg:
return timesince(value, arg)
return timesince(value)
except (ValueError, TypeError):
return ''
@register.filter("timeuntil", is_safe=False)
def timeuntil_filter(value, arg=None):
"""Format a date as the time until that date (i.e. "4 days, 6 hours")."""
if not value:
return ''
try:
return timeuntil(value, arg)
except (ValueError, TypeError):
return ''
###################
# LOGIC #
###################
@register.filter(is_safe=False)
def default(value, arg):
"""If value is unavailable, use given default."""
return value or arg
@register.filter(is_safe=False)
def default_if_none(value, arg):
"""If value is None, use given default."""
if value is None:
return arg
return value
@register.filter(is_safe=False)
def divisibleby(value, arg):
"""Return True if the value is divisible by the argument."""
return int(value) % int(arg) == 0
@register.filter(is_safe=False)
def yesno(value, arg=None):
"""
Given a string mapping values for true, false, and (optionally) None,
return one of those strings according to the value:
========== ====================== ==================================
Value Argument Outputs
========== ====================== ==================================
``True`` ``"yeah,no,maybe"`` ``yeah``
``False`` ``"yeah,no,maybe"`` ``no``
``None`` ``"yeah,no,maybe"`` ``maybe``
``None`` ``"yeah,no"`` ``"no"`` (converts None to False
if no mapping for None is given.
========== ====================== ==================================
"""
if arg is None:
# Translators: Please do not add spaces around commas.
arg = gettext('yes,no,maybe')
bits = arg.split(',')
if len(bits) < 2:
return value # Invalid arg.
try:
yes, no, maybe = bits
except ValueError:
# Unpack list of wrong size (no "maybe" value provided).
yes, no, maybe = bits[0], bits[1], bits[1]
if value is None:
return maybe
if value:
return yes
return no
###################
# MISC #
###################
@register.filter(is_safe=True)
def filesizeformat(bytes_):
"""
Format the value like a 'human-readable' file size (i.e. 13 KB, 4.1 MB,
102 bytes, etc.).
"""
try:
bytes_ = int(bytes_)
except (TypeError, ValueError, UnicodeDecodeError):
value = ngettext("%(size)d byte", "%(size)d bytes", 0) % {'size': 0}
return avoid_wrapping(value)
def filesize_number_format(value):
return formats.number_format(round(value, 1), 1)
KB = 1 << 10
MB = 1 << 20
GB = 1 << 30
TB = 1 << 40
PB = 1 << 50
negative = bytes_ < 0
if negative:
bytes_ = -bytes_ # Allow formatting of negative numbers.
if bytes_ < KB:
value = ngettext("%(size)d byte", "%(size)d bytes", bytes_) % {'size': bytes_}
elif bytes_ < MB:
value = gettext("%s KB") % filesize_number_format(bytes_ / KB)
elif bytes_ < GB:
value = gettext("%s MB") % filesize_number_format(bytes_ / MB)
elif bytes_ < TB:
value = gettext("%s GB") % filesize_number_format(bytes_ / GB)
elif bytes_ < PB:
value = gettext("%s TB") % filesize_number_format(bytes_ / TB)
else:
value = gettext("%s PB") % filesize_number_format(bytes_ / PB)
if negative:
value = "-%s" % value
return avoid_wrapping(value)
@register.filter(is_safe=False)
def pluralize(value, arg='s'):
"""
Return a plural suffix if the value is not 1, '1', or an object of
length 1. By default, use 's' as the suffix:
* If value is 0, vote{{ value|pluralize }} display "votes".
* If value is 1, vote{{ value|pluralize }} display "vote".
* If value is 2, vote{{ value|pluralize }} display "votes".
If an argument is provided, use that string instead:
* If value is 0, class{{ value|pluralize:"es" }} display "classes".
* If value is 1, class{{ value|pluralize:"es" }} display "class".
* If value is 2, class{{ value|pluralize:"es" }} display "classes".
If the provided argument contains a comma, use the text before the comma
for the singular case and the text after the comma for the plural case:
* If value is 0, cand{{ value|pluralize:"y,ies" }} display "candies".
* If value is 1, cand{{ value|pluralize:"y,ies" }} display "candy".
* If value is 2, cand{{ value|pluralize:"y,ies" }} display "candies".
"""
if ',' not in arg:
arg = ',' + arg
bits = arg.split(',')
if len(bits) > 2:
return ''
singular_suffix, plural_suffix = bits[:2]
try:
return singular_suffix if float(value) == 1 else plural_suffix
except ValueError: # Invalid string that's not a number.
pass
except TypeError: # Value isn't a string or a number; maybe it's a list?
try:
return singular_suffix if len(value) == 1 else plural_suffix
except TypeError: # len() of unsized object.
pass
return ''
@register.filter("phone2numeric", is_safe=True)
def phone2numeric_filter(value):
"""Take a phone number and converts it in to its numerical equivalent."""
return phone2numeric(value)
@register.filter(is_safe=True)
def pprint(value):
"""A wrapper around pprint.pprint -- for debugging, really."""
try:
return pformat(value)
except Exception as e:
return "Error in formatting: %s: %s" % (e.__class__.__name__, e)
|
a149674074b1cc683e20b706a4f6663e3de02dabf7f1b74479070c079e0d9a19 | """
This module converts requested URLs to callback view functions.
URLResolver is the main class here. Its resolve() method takes a URL (as
a string) and returns a ResolverMatch object which provides access to all
attributes of the resolved URL match.
"""
import functools
import inspect
import re
import string
from importlib import import_module
from pickle import PicklingError
from urllib.parse import quote
from asgiref.local import Local
from django.conf import settings
from django.core.checks import Error, Warning
from django.core.checks.urls import check_resolver
from django.core.exceptions import ImproperlyConfigured, ViewDoesNotExist
from django.utils.datastructures import MultiValueDict
from django.utils.functional import cached_property
from django.utils.http import RFC3986_SUBDELIMS, escape_leading_slashes
from django.utils.regex_helper import _lazy_re_compile, normalize
from django.utils.translation import get_language
from .converters import get_converter
from .exceptions import NoReverseMatch, Resolver404
from .utils import get_callable
class ResolverMatch:
def __init__(self, func, args, kwargs, url_name=None, app_names=None, namespaces=None, route=None, tried=None):
self.func = func
self.args = args
self.kwargs = kwargs
self.url_name = url_name
self.route = route
self.tried = tried
# If a URLRegexResolver doesn't have a namespace or app_name, it passes
# in an empty value.
self.app_names = [x for x in app_names if x] if app_names else []
self.app_name = ':'.join(self.app_names)
self.namespaces = [x for x in namespaces if x] if namespaces else []
self.namespace = ':'.join(self.namespaces)
if not hasattr(func, '__name__'):
# A class-based view
self._func_path = func.__class__.__module__ + '.' + func.__class__.__name__
else:
# A function-based view
self._func_path = func.__module__ + '.' + func.__name__
view_path = url_name or self._func_path
self.view_name = ':'.join(self.namespaces + [view_path])
def __getitem__(self, index):
return (self.func, self.args, self.kwargs)[index]
def __repr__(self):
if isinstance(self.func, functools.partial):
func = repr(self.func)
else:
func = self._func_path
return (
'ResolverMatch(func=%s, args=%r, kwargs=%r, url_name=%r, '
'app_names=%r, namespaces=%r, route=%r)' % (
func, self.args, self.kwargs, self.url_name,
self.app_names, self.namespaces, self.route,
)
)
def __reduce_ex__(self, protocol):
raise PicklingError(f'Cannot pickle {self.__class__.__qualname__}.')
def get_resolver(urlconf=None):
if urlconf is None:
urlconf = settings.ROOT_URLCONF
return _get_cached_resolver(urlconf)
@functools.lru_cache(maxsize=None)
def _get_cached_resolver(urlconf=None):
return URLResolver(RegexPattern(r'^/'), urlconf)
@functools.lru_cache(maxsize=None)
def get_ns_resolver(ns_pattern, resolver, converters):
# Build a namespaced resolver for the given parent URLconf pattern.
# This makes it possible to have captured parameters in the parent
# URLconf pattern.
pattern = RegexPattern(ns_pattern)
pattern.converters = dict(converters)
ns_resolver = URLResolver(pattern, resolver.url_patterns)
return URLResolver(RegexPattern(r'^/'), [ns_resolver])
class LocaleRegexDescriptor:
def __init__(self, attr):
self.attr = attr
def __get__(self, instance, cls=None):
"""
Return a compiled regular expression based on the active language.
"""
if instance is None:
return self
# As a performance optimization, if the given regex string is a regular
# string (not a lazily-translated string proxy), compile it once and
# avoid per-language compilation.
pattern = getattr(instance, self.attr)
if isinstance(pattern, str):
instance.__dict__['regex'] = instance._compile(pattern)
return instance.__dict__['regex']
language_code = get_language()
if language_code not in instance._regex_dict:
instance._regex_dict[language_code] = instance._compile(str(pattern))
return instance._regex_dict[language_code]
class CheckURLMixin:
def describe(self):
"""
Format the URL pattern for display in warning messages.
"""
description = "'{}'".format(self)
if self.name:
description += " [name='{}']".format(self.name)
return description
def _check_pattern_startswith_slash(self):
"""
Check that the pattern does not begin with a forward slash.
"""
regex_pattern = self.regex.pattern
if not settings.APPEND_SLASH:
# Skip check as it can be useful to start a URL pattern with a slash
# when APPEND_SLASH=False.
return []
if regex_pattern.startswith(('/', '^/', '^\\/')) and not regex_pattern.endswith('/'):
warning = Warning(
"Your URL pattern {} has a route beginning with a '/'. Remove this "
"slash as it is unnecessary. If this pattern is targeted in an "
"include(), ensure the include() pattern has a trailing '/'.".format(
self.describe()
),
id="urls.W002",
)
return [warning]
else:
return []
class RegexPattern(CheckURLMixin):
regex = LocaleRegexDescriptor('_regex')
def __init__(self, regex, name=None, is_endpoint=False):
self._regex = regex
self._regex_dict = {}
self._is_endpoint = is_endpoint
self.name = name
self.converters = {}
def match(self, path):
match = (
self.regex.fullmatch(path)
if self._is_endpoint and self.regex.pattern.endswith('$')
else self.regex.search(path)
)
if match:
# If there are any named groups, use those as kwargs, ignoring
# non-named groups. Otherwise, pass all non-named arguments as
# positional arguments.
kwargs = match.groupdict()
args = () if kwargs else match.groups()
kwargs = {k: v for k, v in kwargs.items() if v is not None}
return path[match.end():], args, kwargs
return None
def check(self):
warnings = []
warnings.extend(self._check_pattern_startswith_slash())
if not self._is_endpoint:
warnings.extend(self._check_include_trailing_dollar())
return warnings
def _check_include_trailing_dollar(self):
regex_pattern = self.regex.pattern
if regex_pattern.endswith('$') and not regex_pattern.endswith(r'\$'):
return [Warning(
"Your URL pattern {} uses include with a route ending with a '$'. "
"Remove the dollar from the route to avoid problems including "
"URLs.".format(self.describe()),
id='urls.W001',
)]
else:
return []
def _compile(self, regex):
"""Compile and return the given regular expression."""
try:
return re.compile(regex)
except re.error as e:
raise ImproperlyConfigured(
'"%s" is not a valid regular expression: %s' % (regex, e)
) from e
def __str__(self):
return str(self._regex)
_PATH_PARAMETER_COMPONENT_RE = _lazy_re_compile(
r'<(?:(?P<converter>[^>:]+):)?(?P<parameter>[^>]+)>'
)
def _route_to_regex(route, is_endpoint=False):
"""
Convert a path pattern into a regular expression. Return the regular
expression and a dictionary mapping the capture names to the converters.
For example, 'foo/<int:pk>' returns '^foo\\/(?P<pk>[0-9]+)'
and {'pk': <django.urls.converters.IntConverter>}.
"""
original_route = route
parts = ['^']
converters = {}
while True:
match = _PATH_PARAMETER_COMPONENT_RE.search(route)
if not match:
parts.append(re.escape(route))
break
elif not set(match.group()).isdisjoint(string.whitespace):
raise ImproperlyConfigured(
"URL route '%s' cannot contain whitespace in angle brackets "
"<…>." % original_route
)
parts.append(re.escape(route[:match.start()]))
route = route[match.end():]
parameter = match['parameter']
if not parameter.isidentifier():
raise ImproperlyConfigured(
"URL route '%s' uses parameter name %r which isn't a valid "
"Python identifier." % (original_route, parameter)
)
raw_converter = match['converter']
if raw_converter is None:
# If a converter isn't specified, the default is `str`.
raw_converter = 'str'
try:
converter = get_converter(raw_converter)
except KeyError as e:
raise ImproperlyConfigured(
'URL route %r uses invalid converter %r.'
% (original_route, raw_converter)
) from e
converters[parameter] = converter
parts.append('(?P<' + parameter + '>' + converter.regex + ')')
if is_endpoint:
parts.append(r'\Z')
return ''.join(parts), converters
class RoutePattern(CheckURLMixin):
regex = LocaleRegexDescriptor('_route')
def __init__(self, route, name=None, is_endpoint=False):
self._route = route
self._regex_dict = {}
self._is_endpoint = is_endpoint
self.name = name
self.converters = _route_to_regex(str(route), is_endpoint)[1]
def match(self, path):
match = self.regex.search(path)
if match:
# RoutePattern doesn't allow non-named groups so args are ignored.
kwargs = match.groupdict()
for key, value in kwargs.items():
converter = self.converters[key]
try:
kwargs[key] = converter.to_python(value)
except ValueError:
return None
return path[match.end():], (), kwargs
return None
def check(self):
warnings = self._check_pattern_startswith_slash()
route = self._route
if '(?P<' in route or route.startswith('^') or route.endswith('$'):
warnings.append(Warning(
"Your URL pattern {} has a route that contains '(?P<', begins "
"with a '^', or ends with a '$'. This was likely an oversight "
"when migrating to django.urls.path().".format(self.describe()),
id='2_0.W001',
))
return warnings
def _compile(self, route):
return re.compile(_route_to_regex(route, self._is_endpoint)[0])
def __str__(self):
return str(self._route)
class LocalePrefixPattern:
def __init__(self, prefix_default_language=True):
self.prefix_default_language = prefix_default_language
self.converters = {}
@property
def regex(self):
# This is only used by reverse() and cached in _reverse_dict.
return re.compile(self.language_prefix)
@property
def language_prefix(self):
language_code = get_language() or settings.LANGUAGE_CODE
if language_code == settings.LANGUAGE_CODE and not self.prefix_default_language:
return ''
else:
return '%s/' % language_code
def match(self, path):
language_prefix = self.language_prefix
if path.startswith(language_prefix):
return path[len(language_prefix):], (), {}
return None
def check(self):
return []
def describe(self):
return "'{}'".format(self)
def __str__(self):
return self.language_prefix
class URLPattern:
def __init__(self, pattern, callback, default_args=None, name=None):
self.pattern = pattern
self.callback = callback # the view
self.default_args = default_args or {}
self.name = name
def __repr__(self):
return '<%s %s>' % (self.__class__.__name__, self.pattern.describe())
def check(self):
warnings = self._check_pattern_name()
warnings.extend(self.pattern.check())
warnings.extend(self._check_callback())
return warnings
def _check_pattern_name(self):
"""
Check that the pattern name does not contain a colon.
"""
if self.pattern.name is not None and ":" in self.pattern.name:
warning = Warning(
"Your URL pattern {} has a name including a ':'. Remove the colon, to "
"avoid ambiguous namespace references.".format(self.pattern.describe()),
id="urls.W003",
)
return [warning]
else:
return []
def _check_callback(self):
from django.views import View
view = self.callback
if inspect.isclass(view) and issubclass(view, View):
return [Error(
'Your URL pattern %s has an invalid view, pass %s.as_view() '
'instead of %s.' % (
self.pattern.describe(),
view.__name__,
view.__name__,
),
id='urls.E009',
)]
return []
def resolve(self, path):
match = self.pattern.match(path)
if match:
new_path, args, kwargs = match
# Pass any extra_kwargs as **kwargs.
kwargs.update(self.default_args)
return ResolverMatch(self.callback, args, kwargs, self.pattern.name, route=str(self.pattern))
@cached_property
def lookup_str(self):
"""
A string that identifies the view (e.g. 'path.to.view_function' or
'path.to.ClassBasedView').
"""
callback = self.callback
if isinstance(callback, functools.partial):
callback = callback.func
if hasattr(callback, 'view_class'):
callback = callback.view_class
elif not hasattr(callback, '__name__'):
return callback.__module__ + "." + callback.__class__.__name__
return callback.__module__ + "." + callback.__qualname__
class URLResolver:
def __init__(self, pattern, urlconf_name, default_kwargs=None, app_name=None, namespace=None):
self.pattern = pattern
# urlconf_name is the dotted Python path to the module defining
# urlpatterns. It may also be an object with an urlpatterns attribute
# or urlpatterns itself.
self.urlconf_name = urlconf_name
self.callback = None
self.default_kwargs = default_kwargs or {}
self.namespace = namespace
self.app_name = app_name
self._reverse_dict = {}
self._namespace_dict = {}
self._app_dict = {}
# set of dotted paths to all functions and classes that are used in
# urlpatterns
self._callback_strs = set()
self._populated = False
self._local = Local()
def __repr__(self):
if isinstance(self.urlconf_name, list) and self.urlconf_name:
# Don't bother to output the whole list, it can be huge
urlconf_repr = '<%s list>' % self.urlconf_name[0].__class__.__name__
else:
urlconf_repr = repr(self.urlconf_name)
return '<%s %s (%s:%s) %s>' % (
self.__class__.__name__, urlconf_repr, self.app_name,
self.namespace, self.pattern.describe(),
)
def check(self):
messages = []
for pattern in self.url_patterns:
messages.extend(check_resolver(pattern))
messages.extend(self._check_custom_error_handlers())
return messages or self.pattern.check()
def _check_custom_error_handlers(self):
messages = []
# All handlers take (request, exception) arguments except handler500
# which takes (request).
for status_code, num_parameters in [(400, 2), (403, 2), (404, 2), (500, 1)]:
try:
handler = self.resolve_error_handler(status_code)
except (ImportError, ViewDoesNotExist) as e:
path = getattr(self.urlconf_module, 'handler%s' % status_code)
msg = (
"The custom handler{status_code} view '{path}' could not be imported."
).format(status_code=status_code, path=path)
messages.append(Error(msg, hint=str(e), id='urls.E008'))
continue
signature = inspect.signature(handler)
args = [None] * num_parameters
try:
signature.bind(*args)
except TypeError:
msg = (
"The custom handler{status_code} view '{path}' does not "
"take the correct number of arguments ({args})."
).format(
status_code=status_code,
path=handler.__module__ + '.' + handler.__qualname__,
args='request, exception' if num_parameters == 2 else 'request',
)
messages.append(Error(msg, id='urls.E007'))
return messages
def _populate(self):
# Short-circuit if called recursively in this thread to prevent
# infinite recursion. Concurrent threads may call this at the same
# time and will need to continue, so set 'populating' on a
# thread-local variable.
if getattr(self._local, 'populating', False):
return
try:
self._local.populating = True
lookups = MultiValueDict()
namespaces = {}
apps = {}
language_code = get_language()
for url_pattern in reversed(self.url_patterns):
p_pattern = url_pattern.pattern.regex.pattern
if p_pattern.startswith('^'):
p_pattern = p_pattern[1:]
if isinstance(url_pattern, URLPattern):
self._callback_strs.add(url_pattern.lookup_str)
bits = normalize(url_pattern.pattern.regex.pattern)
lookups.appendlist(
url_pattern.callback,
(bits, p_pattern, url_pattern.default_args, url_pattern.pattern.converters)
)
if url_pattern.name is not None:
lookups.appendlist(
url_pattern.name,
(bits, p_pattern, url_pattern.default_args, url_pattern.pattern.converters)
)
else: # url_pattern is a URLResolver.
url_pattern._populate()
if url_pattern.app_name:
apps.setdefault(url_pattern.app_name, []).append(url_pattern.namespace)
namespaces[url_pattern.namespace] = (p_pattern, url_pattern)
else:
for name in url_pattern.reverse_dict:
for matches, pat, defaults, converters in url_pattern.reverse_dict.getlist(name):
new_matches = normalize(p_pattern + pat)
lookups.appendlist(
name,
(
new_matches,
p_pattern + pat,
{**defaults, **url_pattern.default_kwargs},
{**self.pattern.converters, **url_pattern.pattern.converters, **converters}
)
)
for namespace, (prefix, sub_pattern) in url_pattern.namespace_dict.items():
current_converters = url_pattern.pattern.converters
sub_pattern.pattern.converters.update(current_converters)
namespaces[namespace] = (p_pattern + prefix, sub_pattern)
for app_name, namespace_list in url_pattern.app_dict.items():
apps.setdefault(app_name, []).extend(namespace_list)
self._callback_strs.update(url_pattern._callback_strs)
self._namespace_dict[language_code] = namespaces
self._app_dict[language_code] = apps
self._reverse_dict[language_code] = lookups
self._populated = True
finally:
self._local.populating = False
@property
def reverse_dict(self):
language_code = get_language()
if language_code not in self._reverse_dict:
self._populate()
return self._reverse_dict[language_code]
@property
def namespace_dict(self):
language_code = get_language()
if language_code not in self._namespace_dict:
self._populate()
return self._namespace_dict[language_code]
@property
def app_dict(self):
language_code = get_language()
if language_code not in self._app_dict:
self._populate()
return self._app_dict[language_code]
@staticmethod
def _extend_tried(tried, pattern, sub_tried=None):
if sub_tried is None:
tried.append([pattern])
else:
tried.extend([pattern, *t] for t in sub_tried)
@staticmethod
def _join_route(route1, route2):
"""Join two routes, without the starting ^ in the second route."""
if not route1:
return route2
if route2.startswith('^'):
route2 = route2[1:]
return route1 + route2
def _is_callback(self, name):
if not self._populated:
self._populate()
return name in self._callback_strs
def resolve(self, path):
path = str(path) # path may be a reverse_lazy object
tried = []
match = self.pattern.match(path)
if match:
new_path, args, kwargs = match
for pattern in self.url_patterns:
try:
sub_match = pattern.resolve(new_path)
except Resolver404 as e:
self._extend_tried(tried, pattern, e.args[0].get('tried'))
else:
if sub_match:
# Merge captured arguments in match with submatch
sub_match_dict = {**kwargs, **self.default_kwargs}
# Update the sub_match_dict with the kwargs from the sub_match.
sub_match_dict.update(sub_match.kwargs)
# If there are *any* named groups, ignore all non-named groups.
# Otherwise, pass all non-named arguments as positional arguments.
sub_match_args = sub_match.args
if not sub_match_dict:
sub_match_args = args + sub_match.args
current_route = '' if isinstance(pattern, URLPattern) else str(pattern.pattern)
self._extend_tried(tried, pattern, sub_match.tried)
return ResolverMatch(
sub_match.func,
sub_match_args,
sub_match_dict,
sub_match.url_name,
[self.app_name] + sub_match.app_names,
[self.namespace] + sub_match.namespaces,
self._join_route(current_route, sub_match.route),
tried,
)
tried.append([pattern])
raise Resolver404({'tried': tried, 'path': new_path})
raise Resolver404({'path': path})
@cached_property
def urlconf_module(self):
if isinstance(self.urlconf_name, str):
return import_module(self.urlconf_name)
else:
return self.urlconf_name
@cached_property
def url_patterns(self):
# urlconf_module might be a valid set of patterns, so we default to it
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
try:
iter(patterns)
except TypeError as e:
msg = (
"The included URLconf '{name}' does not appear to have "
"any patterns in it. If you see the 'urlpatterns' variable "
"with valid patterns in the file then the issue is probably "
"caused by a circular import."
)
raise ImproperlyConfigured(msg.format(name=self.urlconf_name)) from e
return patterns
def resolve_error_handler(self, view_type):
callback = getattr(self.urlconf_module, 'handler%s' % view_type, None)
if not callback:
# No handler specified in file; use lazy import, since
# django.conf.urls imports this file.
from django.conf import urls
callback = getattr(urls, 'handler%s' % view_type)
return get_callable(callback)
def reverse(self, lookup_view, *args, **kwargs):
return self._reverse_with_prefix(lookup_view, '', *args, **kwargs)
def _reverse_with_prefix(self, lookup_view, _prefix, *args, **kwargs):
if args and kwargs:
raise ValueError("Don't mix *args and **kwargs in call to reverse()!")
if not self._populated:
self._populate()
possibilities = self.reverse_dict.getlist(lookup_view)
for possibility, pattern, defaults, converters in possibilities:
for result, params in possibility:
if args:
if len(args) != len(params):
continue
candidate_subs = dict(zip(params, args))
else:
if set(kwargs).symmetric_difference(params).difference(defaults):
continue
if any(kwargs.get(k, v) != v for k, v in defaults.items()):
continue
candidate_subs = kwargs
# Convert the candidate subs to text using Converter.to_url().
text_candidate_subs = {}
match = True
for k, v in candidate_subs.items():
if k in converters:
try:
text_candidate_subs[k] = converters[k].to_url(v)
except ValueError:
match = False
break
else:
text_candidate_subs[k] = str(v)
if not match:
continue
# WSGI provides decoded URLs, without %xx escapes, and the URL
# resolver operates on such URLs. First substitute arguments
# without quoting to build a decoded URL and look for a match.
# Then, if we have a match, redo the substitution with quoted
# arguments in order to return a properly encoded URL.
candidate_pat = _prefix.replace('%', '%%') + result
if re.search('^%s%s' % (re.escape(_prefix), pattern), candidate_pat % text_candidate_subs):
# safe characters from `pchar` definition of RFC 3986
url = quote(candidate_pat % text_candidate_subs, safe=RFC3986_SUBDELIMS + '/~:@')
# Don't allow construction of scheme relative urls.
return escape_leading_slashes(url)
# lookup_view can be URL name or callable, but callables are not
# friendly in error messages.
m = getattr(lookup_view, '__module__', None)
n = getattr(lookup_view, '__name__', None)
if m is not None and n is not None:
lookup_view_s = "%s.%s" % (m, n)
else:
lookup_view_s = lookup_view
patterns = [pattern for (_, pattern, _, _) in possibilities]
if patterns:
if args:
arg_msg = "arguments '%s'" % (args,)
elif kwargs:
arg_msg = "keyword arguments '%s'" % kwargs
else:
arg_msg = "no arguments"
msg = (
"Reverse for '%s' with %s not found. %d pattern(s) tried: %s" %
(lookup_view_s, arg_msg, len(patterns), patterns)
)
else:
msg = (
"Reverse for '%(view)s' not found. '%(view)s' is not "
"a valid view function or pattern name." % {'view': lookup_view_s}
)
raise NoReverseMatch(msg)
|
3f1739597c5c3394fab071393cf92dae1b19546d9085c8550aca101c942368d9 | from django.core.exceptions import ValidationError
from django.forms import Form
from django.forms.fields import BooleanField, IntegerField
from django.forms.renderers import get_default_renderer
from django.forms.utils import ErrorList, RenderableFormMixin
from django.forms.widgets import CheckboxInput, HiddenInput, NumberInput
from django.utils.functional import cached_property
from django.utils.translation import gettext_lazy as _, ngettext
__all__ = ('BaseFormSet', 'formset_factory', 'all_valid')
# special field names
TOTAL_FORM_COUNT = 'TOTAL_FORMS'
INITIAL_FORM_COUNT = 'INITIAL_FORMS'
MIN_NUM_FORM_COUNT = 'MIN_NUM_FORMS'
MAX_NUM_FORM_COUNT = 'MAX_NUM_FORMS'
ORDERING_FIELD_NAME = 'ORDER'
DELETION_FIELD_NAME = 'DELETE'
# default minimum number of forms in a formset
DEFAULT_MIN_NUM = 0
# default maximum number of forms in a formset, to prevent memory exhaustion
DEFAULT_MAX_NUM = 1000
class ManagementForm(Form):
"""
Keep track of how many form instances are displayed on the page. If adding
new forms via JavaScript, you should increment the count field of this form
as well.
"""
TOTAL_FORMS = IntegerField(widget=HiddenInput)
INITIAL_FORMS = IntegerField(widget=HiddenInput)
# MIN_NUM_FORM_COUNT and MAX_NUM_FORM_COUNT are output with the rest of the
# management form, but only for the convenience of client-side code. The
# POST value of them returned from the client is not checked.
MIN_NUM_FORMS = IntegerField(required=False, widget=HiddenInput)
MAX_NUM_FORMS = IntegerField(required=False, widget=HiddenInput)
def clean(self):
cleaned_data = super().clean()
# When the management form is invalid, we don't know how many forms
# were submitted.
cleaned_data.setdefault(TOTAL_FORM_COUNT, 0)
cleaned_data.setdefault(INITIAL_FORM_COUNT, 0)
return cleaned_data
class BaseFormSet(RenderableFormMixin):
"""
A collection of instances of the same Form class.
"""
deletion_widget = CheckboxInput
ordering_widget = NumberInput
default_error_messages = {
'missing_management_form': _(
'ManagementForm data is missing or has been tampered with. Missing fields: '
'%(field_names)s. You may need to file a bug report if the issue persists.'
),
}
template_name = 'django/forms/formsets/default.html'
template_name_p = 'django/forms/formsets/p.html'
template_name_table = 'django/forms/formsets/table.html'
template_name_ul = 'django/forms/formsets/ul.html'
def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
initial=None, error_class=ErrorList, form_kwargs=None,
error_messages=None):
self.is_bound = data is not None or files is not None
self.prefix = prefix or self.get_default_prefix()
self.auto_id = auto_id
self.data = data or {}
self.files = files or {}
self.initial = initial
self.form_kwargs = form_kwargs or {}
self.error_class = error_class
self._errors = None
self._non_form_errors = None
messages = {}
for cls in reversed(type(self).__mro__):
messages.update(getattr(cls, 'default_error_messages', {}))
if error_messages is not None:
messages.update(error_messages)
self.error_messages = messages
def __iter__(self):
"""Yield the forms in the order they should be rendered."""
return iter(self.forms)
def __getitem__(self, index):
"""Return the form at the given index, based on the rendering order."""
return self.forms[index]
def __len__(self):
return len(self.forms)
def __bool__(self):
"""
Return True since all formsets have a management form which is not
included in the length.
"""
return True
@cached_property
def management_form(self):
"""Return the ManagementForm instance for this FormSet."""
if self.is_bound:
form = ManagementForm(self.data, auto_id=self.auto_id, prefix=self.prefix, renderer=self.renderer)
form.full_clean()
else:
form = ManagementForm(
auto_id=self.auto_id,
prefix=self.prefix,
initial={
TOTAL_FORM_COUNT: self.total_form_count(),
INITIAL_FORM_COUNT: self.initial_form_count(),
MIN_NUM_FORM_COUNT: self.min_num,
MAX_NUM_FORM_COUNT: self.max_num,
},
renderer=self.renderer,
)
return form
def total_form_count(self):
"""Return the total number of forms in this FormSet."""
if self.is_bound:
# return absolute_max if it is lower than the actual total form
# count in the data; this is DoS protection to prevent clients
# from forcing the server to instantiate arbitrary numbers of
# forms
return min(self.management_form.cleaned_data[TOTAL_FORM_COUNT], self.absolute_max)
else:
initial_forms = self.initial_form_count()
total_forms = max(initial_forms, self.min_num) + self.extra
# Allow all existing related objects/inlines to be displayed,
# but don't allow extra beyond max_num.
if initial_forms > self.max_num >= 0:
total_forms = initial_forms
elif total_forms > self.max_num >= 0:
total_forms = self.max_num
return total_forms
def initial_form_count(self):
"""Return the number of forms that are required in this FormSet."""
if self.is_bound:
return self.management_form.cleaned_data[INITIAL_FORM_COUNT]
else:
# Use the length of the initial data if it's there, 0 otherwise.
initial_forms = len(self.initial) if self.initial else 0
return initial_forms
@cached_property
def forms(self):
"""Instantiate forms at first property access."""
# DoS protection is included in total_form_count()
return [
self._construct_form(i, **self.get_form_kwargs(i))
for i in range(self.total_form_count())
]
def get_form_kwargs(self, index):
"""
Return additional keyword arguments for each individual formset form.
index will be None if the form being constructed is a new empty
form.
"""
return self.form_kwargs.copy()
def _construct_form(self, i, **kwargs):
"""Instantiate and return the i-th form instance in a formset."""
defaults = {
'auto_id': self.auto_id,
'prefix': self.add_prefix(i),
'error_class': self.error_class,
# Don't render the HTML 'required' attribute as it may cause
# incorrect validation for extra, optional, and deleted
# forms in the formset.
'use_required_attribute': False,
'renderer': self.renderer,
}
if self.is_bound:
defaults['data'] = self.data
defaults['files'] = self.files
if self.initial and 'initial' not in kwargs:
try:
defaults['initial'] = self.initial[i]
except IndexError:
pass
# Allow extra forms to be empty, unless they're part of
# the minimum forms.
if i >= self.initial_form_count() and i >= self.min_num:
defaults['empty_permitted'] = True
defaults.update(kwargs)
form = self.form(**defaults)
self.add_fields(form, i)
return form
@property
def initial_forms(self):
"""Return a list of all the initial forms in this formset."""
return self.forms[:self.initial_form_count()]
@property
def extra_forms(self):
"""Return a list of all the extra forms in this formset."""
return self.forms[self.initial_form_count():]
@property
def empty_form(self):
form = self.form(
auto_id=self.auto_id,
prefix=self.add_prefix('__prefix__'),
empty_permitted=True,
use_required_attribute=False,
**self.get_form_kwargs(None),
renderer=self.renderer,
)
self.add_fields(form, None)
return form
@property
def cleaned_data(self):
"""
Return a list of form.cleaned_data dicts for every form in self.forms.
"""
if not self.is_valid():
raise AttributeError("'%s' object has no attribute 'cleaned_data'" % self.__class__.__name__)
return [form.cleaned_data for form in self.forms]
@property
def deleted_forms(self):
"""Return a list of forms that have been marked for deletion."""
if not self.is_valid() or not self.can_delete:
return []
# construct _deleted_form_indexes which is just a list of form indexes
# that have had their deletion widget set to True
if not hasattr(self, '_deleted_form_indexes'):
self._deleted_form_indexes = []
for i, form in enumerate(self.forms):
# if this is an extra form and hasn't changed, don't consider it
if i >= self.initial_form_count() and not form.has_changed():
continue
if self._should_delete_form(form):
self._deleted_form_indexes.append(i)
return [self.forms[i] for i in self._deleted_form_indexes]
@property
def ordered_forms(self):
"""
Return a list of form in the order specified by the incoming data.
Raise an AttributeError if ordering is not allowed.
"""
if not self.is_valid() or not self.can_order:
raise AttributeError("'%s' object has no attribute 'ordered_forms'" % self.__class__.__name__)
# Construct _ordering, which is a list of (form_index, order_field_value)
# tuples. After constructing this list, we'll sort it by order_field_value
# so we have a way to get to the form indexes in the order specified
# by the form data.
if not hasattr(self, '_ordering'):
self._ordering = []
for i, form in enumerate(self.forms):
# if this is an extra form and hasn't changed, don't consider it
if i >= self.initial_form_count() and not form.has_changed():
continue
# don't add data marked for deletion to self.ordered_data
if self.can_delete and self._should_delete_form(form):
continue
self._ordering.append((i, form.cleaned_data[ORDERING_FIELD_NAME]))
# After we're done populating self._ordering, sort it.
# A sort function to order things numerically ascending, but
# None should be sorted below anything else. Allowing None as
# a comparison value makes it so we can leave ordering fields
# blank.
def compare_ordering_key(k):
if k[1] is None:
return (1, 0) # +infinity, larger than any number
return (0, k[1])
self._ordering.sort(key=compare_ordering_key)
# Return a list of form.cleaned_data dicts in the order specified by
# the form data.
return [self.forms[i[0]] for i in self._ordering]
@classmethod
def get_default_prefix(cls):
return 'form'
@classmethod
def get_deletion_widget(cls):
return cls.deletion_widget
@classmethod
def get_ordering_widget(cls):
return cls.ordering_widget
def non_form_errors(self):
"""
Return an ErrorList of errors that aren't associated with a particular
form -- i.e., from formset.clean(). Return an empty ErrorList if there
are none.
"""
if self._non_form_errors is None:
self.full_clean()
return self._non_form_errors
@property
def errors(self):
"""Return a list of form.errors for every form in self.forms."""
if self._errors is None:
self.full_clean()
return self._errors
def total_error_count(self):
"""Return the number of errors across all forms in the formset."""
return len(self.non_form_errors()) +\
sum(len(form_errors) for form_errors in self.errors)
def _should_delete_form(self, form):
"""Return whether or not the form was marked for deletion."""
return form.cleaned_data.get(DELETION_FIELD_NAME, False)
def is_valid(self):
"""Return True if every form in self.forms is valid."""
if not self.is_bound:
return False
# Accessing errors triggers a full clean the first time only.
self.errors
# List comprehension ensures is_valid() is called for all forms.
# Forms due to be deleted shouldn't cause the formset to be invalid.
forms_valid = all([
form.is_valid() for form in self.forms
if not (self.can_delete and self._should_delete_form(form))
])
return forms_valid and not self.non_form_errors()
def full_clean(self):
"""
Clean all of self.data and populate self._errors and
self._non_form_errors.
"""
self._errors = []
self._non_form_errors = self.error_class(error_class='nonform', renderer=self.renderer)
empty_forms_count = 0
if not self.is_bound: # Stop further processing.
return
if not self.management_form.is_valid():
error = ValidationError(
self.error_messages['missing_management_form'],
params={
'field_names': ', '.join(
self.management_form.add_prefix(field_name)
for field_name in self.management_form.errors
),
},
code='missing_management_form',
)
self._non_form_errors.append(error)
for i, form in enumerate(self.forms):
# Empty forms are unchanged forms beyond those with initial data.
if not form.has_changed() and i >= self.initial_form_count():
empty_forms_count += 1
# Accessing errors calls full_clean() if necessary.
# _should_delete_form() requires cleaned_data.
form_errors = form.errors
if self.can_delete and self._should_delete_form(form):
continue
self._errors.append(form_errors)
try:
if (self.validate_max and
self.total_form_count() - len(self.deleted_forms) > self.max_num) or \
self.management_form.cleaned_data[TOTAL_FORM_COUNT] > self.absolute_max:
raise ValidationError(ngettext(
"Please submit at most %d form.",
"Please submit at most %d forms.", self.max_num) % self.max_num,
code='too_many_forms',
)
if (self.validate_min and
self.total_form_count() - len(self.deleted_forms) - empty_forms_count < self.min_num):
raise ValidationError(ngettext(
"Please submit at least %d form.",
"Please submit at least %d forms.", self.min_num) % self.min_num,
code='too_few_forms')
# Give self.clean() a chance to do cross-form validation.
self.clean()
except ValidationError as e:
self._non_form_errors = self.error_class(
e.error_list,
error_class='nonform',
renderer=self.renderer,
)
def clean(self):
"""
Hook for doing any extra formset-wide cleaning after Form.clean() has
been called on every form. Any ValidationError raised by this method
will not be associated with a particular form; it will be accessible
via formset.non_form_errors()
"""
pass
def has_changed(self):
"""Return True if data in any form differs from initial."""
return any(form.has_changed() for form in self)
def add_fields(self, form, index):
"""A hook for adding extra fields on to each form instance."""
initial_form_count = self.initial_form_count()
if self.can_order:
# Only pre-fill the ordering field for initial forms.
if index is not None and index < initial_form_count:
form.fields[ORDERING_FIELD_NAME] = IntegerField(
label=_('Order'),
initial=index + 1,
required=False,
widget=self.get_ordering_widget(),
)
else:
form.fields[ORDERING_FIELD_NAME] = IntegerField(
label=_('Order'),
required=False,
widget=self.get_ordering_widget(),
)
if self.can_delete and (self.can_delete_extra or index < initial_form_count):
form.fields[DELETION_FIELD_NAME] = BooleanField(
label=_('Delete'),
required=False,
widget=self.get_deletion_widget(),
)
def add_prefix(self, index):
return '%s-%s' % (self.prefix, index)
def is_multipart(self):
"""
Return True if the formset needs to be multipart, i.e. it
has FileInput, or False otherwise.
"""
if self.forms:
return self.forms[0].is_multipart()
else:
return self.empty_form.is_multipart()
@property
def media(self):
# All the forms on a FormSet are the same, so you only need to
# interrogate the first form for media.
if self.forms:
return self.forms[0].media
else:
return self.empty_form.media
def get_context(self):
return {'formset': self}
def formset_factory(form, formset=BaseFormSet, extra=1, can_order=False,
can_delete=False, max_num=None, validate_max=False,
min_num=None, validate_min=False, absolute_max=None,
can_delete_extra=True, renderer=None):
"""Return a FormSet for the given form class."""
if min_num is None:
min_num = DEFAULT_MIN_NUM
if max_num is None:
max_num = DEFAULT_MAX_NUM
# absolute_max is a hard limit on forms instantiated, to prevent
# memory-exhaustion attacks. Default to max_num + DEFAULT_MAX_NUM
# (which is 2 * DEFAULT_MAX_NUM if max_num is None in the first place).
if absolute_max is None:
absolute_max = max_num + DEFAULT_MAX_NUM
if max_num > absolute_max:
raise ValueError(
"'absolute_max' must be greater or equal to 'max_num'."
)
attrs = {
'form': form,
'extra': extra,
'can_order': can_order,
'can_delete': can_delete,
'can_delete_extra': can_delete_extra,
'min_num': min_num,
'max_num': max_num,
'absolute_max': absolute_max,
'validate_min': validate_min,
'validate_max': validate_max,
'renderer': renderer or get_default_renderer(),
}
return type(form.__name__ + 'FormSet', (formset,), attrs)
def all_valid(formsets):
"""Validate every formset and return True if all are valid."""
# List comprehension ensures is_valid() is called for all formsets.
return all([formset.is_valid() for formset in formsets])
|
4eabedfc032b00621252557af019488ea98d5eae14bf819f88096e62e52b5fdf | """
HTML Widget classes
"""
import copy
import datetime
import warnings
from collections import defaultdict
from itertools import chain
from django.forms.utils import to_current_timezone
from django.templatetags.static import static
from django.utils import formats
from django.utils.datastructures import OrderedSet
from django.utils.dates import MONTHS
from django.utils.formats import get_format
from django.utils.html import format_html, html_safe
from django.utils.regex_helper import _lazy_re_compile
from django.utils.safestring import mark_safe
from django.utils.topological_sort import (
CyclicDependencyError, stable_topological_sort,
)
from django.utils.translation import gettext_lazy as _
from .renderers import get_default_renderer
__all__ = (
'Media', 'MediaDefiningClass', 'Widget', 'TextInput', 'NumberInput',
'EmailInput', 'URLInput', 'PasswordInput', 'HiddenInput',
'MultipleHiddenInput', 'FileInput', 'ClearableFileInput', 'Textarea',
'DateInput', 'DateTimeInput', 'TimeInput', 'CheckboxInput', 'Select',
'NullBooleanSelect', 'SelectMultiple', 'RadioSelect',
'CheckboxSelectMultiple', 'MultiWidget', 'SplitDateTimeWidget',
'SplitHiddenDateTimeWidget', 'SelectDateWidget',
)
MEDIA_TYPES = ('css', 'js')
class MediaOrderConflictWarning(RuntimeWarning):
pass
@html_safe
class Media:
def __init__(self, media=None, css=None, js=None):
if media is not None:
css = getattr(media, 'css', {})
js = getattr(media, 'js', [])
else:
if css is None:
css = {}
if js is None:
js = []
self._css_lists = [css]
self._js_lists = [js]
def __repr__(self):
return 'Media(css=%r, js=%r)' % (self._css, self._js)
def __str__(self):
return self.render()
@property
def _css(self):
css = defaultdict(list)
for css_list in self._css_lists:
for medium, sublist in css_list.items():
css[medium].append(sublist)
return {medium: self.merge(*lists) for medium, lists in css.items()}
@property
def _js(self):
return self.merge(*self._js_lists)
def render(self):
return mark_safe('\n'.join(chain.from_iterable(getattr(self, 'render_' + name)() for name in MEDIA_TYPES)))
def render_js(self):
return [
format_html(
'<script src="{}"></script>',
self.absolute_path(path)
) for path in self._js
]
def render_css(self):
# To keep rendering order consistent, we can't just iterate over items().
# We need to sort the keys, and iterate over the sorted list.
media = sorted(self._css)
return chain.from_iterable([
format_html(
'<link href="{}" type="text/css" media="{}" rel="stylesheet">',
self.absolute_path(path), medium
) for path in self._css[medium]
] for medium in media)
def absolute_path(self, path):
"""
Given a relative or absolute path to a static asset, return an absolute
path. An absolute path will be returned unchanged while a relative path
will be passed to django.templatetags.static.static().
"""
if path.startswith(('http://', 'https://', '/')):
return path
return static(path)
def __getitem__(self, name):
"""Return a Media object that only contains media of the given type."""
if name in MEDIA_TYPES:
return Media(**{str(name): getattr(self, '_' + name)})
raise KeyError('Unknown media type "%s"' % name)
@staticmethod
def merge(*lists):
"""
Merge lists while trying to keep the relative order of the elements.
Warn if the lists have the same elements in a different relative order.
For static assets it can be important to have them included in the DOM
in a certain order. In JavaScript you may not be able to reference a
global or in CSS you might want to override a style.
"""
dependency_graph = defaultdict(set)
all_items = OrderedSet()
for list_ in filter(None, lists):
head = list_[0]
# The first items depend on nothing but have to be part of the
# dependency graph to be included in the result.
dependency_graph.setdefault(head, set())
for item in list_:
all_items.add(item)
# No self dependencies
if head != item:
dependency_graph[item].add(head)
head = item
try:
return stable_topological_sort(all_items, dependency_graph)
except CyclicDependencyError:
warnings.warn(
'Detected duplicate Media files in an opposite order: {}'.format(
', '.join(repr(list_) for list_ in lists)
), MediaOrderConflictWarning,
)
return list(all_items)
def __add__(self, other):
combined = Media()
combined._css_lists = self._css_lists[:]
combined._js_lists = self._js_lists[:]
for item in other._css_lists:
if item and item not in self._css_lists:
combined._css_lists.append(item)
for item in other._js_lists:
if item and item not in self._js_lists:
combined._js_lists.append(item)
return combined
def media_property(cls):
def _media(self):
# Get the media property of the superclass, if it exists
sup_cls = super(cls, self)
try:
base = sup_cls.media
except AttributeError:
base = Media()
# Get the media definition for this class
definition = getattr(cls, 'Media', None)
if definition:
extend = getattr(definition, 'extend', True)
if extend:
if extend is True:
m = base
else:
m = Media()
for medium in extend:
m = m + base[medium]
return m + Media(definition)
return Media(definition)
return base
return property(_media)
class MediaDefiningClass(type):
"""
Metaclass for classes that can have media definitions.
"""
def __new__(mcs, name, bases, attrs):
new_class = super().__new__(mcs, name, bases, attrs)
if 'media' not in attrs:
new_class.media = media_property(new_class)
return new_class
class Widget(metaclass=MediaDefiningClass):
needs_multipart_form = False # Determines does this widget need multipart form
is_localized = False
is_required = False
supports_microseconds = True
def __init__(self, attrs=None):
self.attrs = {} if attrs is None else attrs.copy()
def __deepcopy__(self, memo):
obj = copy.copy(self)
obj.attrs = self.attrs.copy()
memo[id(self)] = obj
return obj
@property
def is_hidden(self):
return self.input_type == 'hidden' if hasattr(self, 'input_type') else False
def subwidgets(self, name, value, attrs=None):
context = self.get_context(name, value, attrs)
yield context['widget']
def format_value(self, value):
"""
Return a value as it should appear when rendered in a template.
"""
if value == '' or value is None:
return None
if self.is_localized:
return formats.localize_input(value)
return str(value)
def get_context(self, name, value, attrs):
return {
'widget': {
'name': name,
'is_hidden': self.is_hidden,
'required': self.is_required,
'value': self.format_value(value),
'attrs': self.build_attrs(self.attrs, attrs),
'template_name': self.template_name,
},
}
def render(self, name, value, attrs=None, renderer=None):
"""Render the widget as an HTML string."""
context = self.get_context(name, value, attrs)
return self._render(self.template_name, context, renderer)
def _render(self, template_name, context, renderer=None):
if renderer is None:
renderer = get_default_renderer()
return mark_safe(renderer.render(template_name, context))
def build_attrs(self, base_attrs, extra_attrs=None):
"""Build an attribute dictionary."""
return {**base_attrs, **(extra_attrs or {})}
def value_from_datadict(self, data, files, name):
"""
Given a dictionary of data and this widget's name, return the value
of this widget or None if it's not provided.
"""
return data.get(name)
def value_omitted_from_data(self, data, files, name):
return name not in data
def id_for_label(self, id_):
"""
Return the HTML ID attribute of this Widget for use by a <label>,
given the ID of the field. Return None if no ID is available.
This hook is necessary because some widgets have multiple HTML
elements and, thus, multiple IDs. In that case, this method should
return an ID value that corresponds to the first ID in the widget's
tags.
"""
return id_
def use_required_attribute(self, initial):
return not self.is_hidden
class Input(Widget):
"""
Base class for all <input> widgets.
"""
input_type = None # Subclasses must define this.
template_name = 'django/forms/widgets/input.html'
def __init__(self, attrs=None):
if attrs is not None:
attrs = attrs.copy()
self.input_type = attrs.pop('type', self.input_type)
super().__init__(attrs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['widget']['type'] = self.input_type
return context
class TextInput(Input):
input_type = 'text'
template_name = 'django/forms/widgets/text.html'
class NumberInput(Input):
input_type = 'number'
template_name = 'django/forms/widgets/number.html'
class EmailInput(Input):
input_type = 'email'
template_name = 'django/forms/widgets/email.html'
class URLInput(Input):
input_type = 'url'
template_name = 'django/forms/widgets/url.html'
class PasswordInput(Input):
input_type = 'password'
template_name = 'django/forms/widgets/password.html'
def __init__(self, attrs=None, render_value=False):
super().__init__(attrs)
self.render_value = render_value
def get_context(self, name, value, attrs):
if not self.render_value:
value = None
return super().get_context(name, value, attrs)
class HiddenInput(Input):
input_type = 'hidden'
template_name = 'django/forms/widgets/hidden.html'
class MultipleHiddenInput(HiddenInput):
"""
Handle <input type="hidden"> for fields that have a list
of values.
"""
template_name = 'django/forms/widgets/multiple_hidden.html'
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
final_attrs = context['widget']['attrs']
id_ = context['widget']['attrs'].get('id')
subwidgets = []
for index, value_ in enumerate(context['widget']['value']):
widget_attrs = final_attrs.copy()
if id_:
# An ID attribute was given. Add a numeric index as a suffix
# so that the inputs don't all have the same ID attribute.
widget_attrs['id'] = '%s_%s' % (id_, index)
widget = HiddenInput()
widget.is_required = self.is_required
subwidgets.append(widget.get_context(name, value_, widget_attrs)['widget'])
context['widget']['subwidgets'] = subwidgets
return context
def value_from_datadict(self, data, files, name):
try:
getter = data.getlist
except AttributeError:
getter = data.get
return getter(name)
def format_value(self, value):
return [] if value is None else value
class FileInput(Input):
input_type = 'file'
needs_multipart_form = True
template_name = 'django/forms/widgets/file.html'
def format_value(self, value):
"""File input never renders a value."""
return
def value_from_datadict(self, data, files, name):
"File widgets take data from FILES, not POST"
return files.get(name)
def value_omitted_from_data(self, data, files, name):
return name not in files
def use_required_attribute(self, initial):
return super().use_required_attribute(initial) and not initial
FILE_INPUT_CONTRADICTION = object()
class ClearableFileInput(FileInput):
clear_checkbox_label = _('Clear')
initial_text = _('Currently')
input_text = _('Change')
template_name = 'django/forms/widgets/clearable_file_input.html'
def clear_checkbox_name(self, name):
"""
Given the name of the file input, return the name of the clear checkbox
input.
"""
return name + '-clear'
def clear_checkbox_id(self, name):
"""
Given the name of the clear checkbox input, return the HTML id for it.
"""
return name + '_id'
def is_initial(self, value):
"""
Return whether value is considered to be initial value.
"""
return bool(value and getattr(value, 'url', False))
def format_value(self, value):
"""
Return the file object if it has a defined url attribute.
"""
if self.is_initial(value):
return value
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
checkbox_name = self.clear_checkbox_name(name)
checkbox_id = self.clear_checkbox_id(checkbox_name)
context['widget'].update({
'checkbox_name': checkbox_name,
'checkbox_id': checkbox_id,
'is_initial': self.is_initial(value),
'input_text': self.input_text,
'initial_text': self.initial_text,
'clear_checkbox_label': self.clear_checkbox_label,
})
return context
def value_from_datadict(self, data, files, name):
upload = super().value_from_datadict(data, files, name)
if not self.is_required and CheckboxInput().value_from_datadict(
data, files, self.clear_checkbox_name(name)):
if upload:
# If the user contradicts themselves (uploads a new file AND
# checks the "clear" checkbox), we return a unique marker
# object that FileField will turn into a ValidationError.
return FILE_INPUT_CONTRADICTION
# False signals to clear any existing value, as opposed to just None
return False
return upload
def value_omitted_from_data(self, data, files, name):
return (
super().value_omitted_from_data(data, files, name) and
self.clear_checkbox_name(name) not in data
)
class Textarea(Widget):
template_name = 'django/forms/widgets/textarea.html'
def __init__(self, attrs=None):
# Use slightly better defaults than HTML's 20x2 box
default_attrs = {'cols': '40', 'rows': '10'}
if attrs:
default_attrs.update(attrs)
super().__init__(default_attrs)
class DateTimeBaseInput(TextInput):
format_key = ''
supports_microseconds = False
def __init__(self, attrs=None, format=None):
super().__init__(attrs)
self.format = format or None
def format_value(self, value):
return formats.localize_input(value, self.format or formats.get_format(self.format_key)[0])
class DateInput(DateTimeBaseInput):
format_key = 'DATE_INPUT_FORMATS'
template_name = 'django/forms/widgets/date.html'
class DateTimeInput(DateTimeBaseInput):
format_key = 'DATETIME_INPUT_FORMATS'
template_name = 'django/forms/widgets/datetime.html'
class TimeInput(DateTimeBaseInput):
format_key = 'TIME_INPUT_FORMATS'
template_name = 'django/forms/widgets/time.html'
# Defined at module level so that CheckboxInput is picklable (#17976)
def boolean_check(v):
return not (v is False or v is None or v == '')
class CheckboxInput(Input):
input_type = 'checkbox'
template_name = 'django/forms/widgets/checkbox.html'
def __init__(self, attrs=None, check_test=None):
super().__init__(attrs)
# check_test is a callable that takes a value and returns True
# if the checkbox should be checked for that value.
self.check_test = boolean_check if check_test is None else check_test
def format_value(self, value):
"""Only return the 'value' attribute if value isn't empty."""
if value is True or value is False or value is None or value == '':
return
return str(value)
def get_context(self, name, value, attrs):
if self.check_test(value):
attrs = {**(attrs or {}), 'checked': True}
return super().get_context(name, value, attrs)
def value_from_datadict(self, data, files, name):
if name not in data:
# A missing value means False because HTML form submission does not
# send results for unselected checkboxes.
return False
value = data.get(name)
# Translate true and false strings to boolean values.
values = {'true': True, 'false': False}
if isinstance(value, str):
value = values.get(value.lower(), value)
return bool(value)
def value_omitted_from_data(self, data, files, name):
# HTML checkboxes don't appear in POST data if not checked, so it's
# never known if the value is actually omitted.
return False
class ChoiceWidget(Widget):
allow_multiple_selected = False
input_type = None
template_name = None
option_template_name = None
add_id_index = True
checked_attribute = {'checked': True}
option_inherits_attrs = True
def __init__(self, attrs=None, choices=()):
super().__init__(attrs)
# choices can be any iterable, but we may need to render this widget
# multiple times. Thus, collapse it into a list so it can be consumed
# more than once.
self.choices = list(choices)
def __deepcopy__(self, memo):
obj = copy.copy(self)
obj.attrs = self.attrs.copy()
obj.choices = copy.copy(self.choices)
memo[id(self)] = obj
return obj
def subwidgets(self, name, value, attrs=None):
"""
Yield all "subwidgets" of this widget. Used to enable iterating
options from a BoundField for choice widgets.
"""
value = self.format_value(value)
yield from self.options(name, value, attrs)
def options(self, name, value, attrs=None):
"""Yield a flat list of options for this widgets."""
for group in self.optgroups(name, value, attrs):
yield from group[1]
def optgroups(self, name, value, attrs=None):
"""Return a list of optgroups for this widget."""
groups = []
has_selected = False
for index, (option_value, option_label) in enumerate(self.choices):
if option_value is None:
option_value = ''
subgroup = []
if isinstance(option_label, (list, tuple)):
group_name = option_value
subindex = 0
choices = option_label
else:
group_name = None
subindex = None
choices = [(option_value, option_label)]
groups.append((group_name, subgroup, index))
for subvalue, sublabel in choices:
selected = (
(not has_selected or self.allow_multiple_selected) and
str(subvalue) in value
)
has_selected |= selected
subgroup.append(self.create_option(
name, subvalue, sublabel, selected, index,
subindex=subindex, attrs=attrs,
))
if subindex is not None:
subindex += 1
return groups
def create_option(self, name, value, label, selected, index, subindex=None, attrs=None):
index = str(index) if subindex is None else "%s_%s" % (index, subindex)
option_attrs = self.build_attrs(self.attrs, attrs) if self.option_inherits_attrs else {}
if selected:
option_attrs.update(self.checked_attribute)
if 'id' in option_attrs:
option_attrs['id'] = self.id_for_label(option_attrs['id'], index)
return {
'name': name,
'value': value,
'label': label,
'selected': selected,
'index': index,
'attrs': option_attrs,
'type': self.input_type,
'template_name': self.option_template_name,
'wrap_label': True,
}
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['widget']['optgroups'] = self.optgroups(name, context['widget']['value'], attrs)
return context
def id_for_label(self, id_, index='0'):
"""
Use an incremented id for each option where the main widget
references the zero index.
"""
if id_ and self.add_id_index:
id_ = '%s_%s' % (id_, index)
return id_
def value_from_datadict(self, data, files, name):
getter = data.get
if self.allow_multiple_selected:
try:
getter = data.getlist
except AttributeError:
pass
return getter(name)
def format_value(self, value):
"""Return selected values as a list."""
if value is None and self.allow_multiple_selected:
return []
if not isinstance(value, (tuple, list)):
value = [value]
return [str(v) if v is not None else '' for v in value]
class Select(ChoiceWidget):
input_type = 'select'
template_name = 'django/forms/widgets/select.html'
option_template_name = 'django/forms/widgets/select_option.html'
add_id_index = False
checked_attribute = {'selected': True}
option_inherits_attrs = False
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
if self.allow_multiple_selected:
context['widget']['attrs']['multiple'] = True
return context
@staticmethod
def _choice_has_empty_value(choice):
"""Return True if the choice's value is empty string or None."""
value, _ = choice
return value is None or value == ''
def use_required_attribute(self, initial):
"""
Don't render 'required' if the first <option> has a value, as that's
invalid HTML.
"""
use_required_attribute = super().use_required_attribute(initial)
# 'required' is always okay for <select multiple>.
if self.allow_multiple_selected:
return use_required_attribute
first_choice = next(iter(self.choices), None)
return use_required_attribute and first_choice is not None and self._choice_has_empty_value(first_choice)
class NullBooleanSelect(Select):
"""
A Select Widget intended to be used with NullBooleanField.
"""
def __init__(self, attrs=None):
choices = (
('unknown', _('Unknown')),
('true', _('Yes')),
('false', _('No')),
)
super().__init__(attrs, choices)
def format_value(self, value):
try:
return {
True: 'true', False: 'false',
'true': 'true', 'false': 'false',
# For backwards compatibility with Django < 2.2.
'2': 'true', '3': 'false',
}[value]
except KeyError:
return 'unknown'
def value_from_datadict(self, data, files, name):
value = data.get(name)
return {
True: True,
'True': True,
'False': False,
False: False,
'true': True,
'false': False,
# For backwards compatibility with Django < 2.2.
'2': True,
'3': False,
}.get(value)
class SelectMultiple(Select):
allow_multiple_selected = True
def value_from_datadict(self, data, files, name):
try:
getter = data.getlist
except AttributeError:
getter = data.get
return getter(name)
def value_omitted_from_data(self, data, files, name):
# An unselected <select multiple> doesn't appear in POST data, so it's
# never known if the value is actually omitted.
return False
class RadioSelect(ChoiceWidget):
input_type = 'radio'
template_name = 'django/forms/widgets/radio.html'
option_template_name = 'django/forms/widgets/radio_option.html'
def id_for_label(self, id_, index=None):
"""
Don't include for="field_0" in <label> to improve accessibility when
using a screen reader, in addition clicking such a label would toggle
the first input.
"""
if index is None:
return ''
return super().id_for_label(id_, index)
class CheckboxSelectMultiple(RadioSelect):
allow_multiple_selected = True
input_type = 'checkbox'
template_name = 'django/forms/widgets/checkbox_select.html'
option_template_name = 'django/forms/widgets/checkbox_option.html'
def use_required_attribute(self, initial):
# Don't use the 'required' attribute because browser validation would
# require all checkboxes to be checked instead of at least one.
return False
def value_omitted_from_data(self, data, files, name):
# HTML checkboxes don't appear in POST data if not checked, so it's
# never known if the value is actually omitted.
return False
class MultiWidget(Widget):
"""
A widget that is composed of multiple widgets.
In addition to the values added by Widget.get_context(), this widget
adds a list of subwidgets to the context as widget['subwidgets'].
These can be looped over and rendered like normal widgets.
You'll probably want to use this class with MultiValueField.
"""
template_name = 'django/forms/widgets/multiwidget.html'
def __init__(self, widgets, attrs=None):
if isinstance(widgets, dict):
self.widgets_names = [
('_%s' % name) if name else '' for name in widgets
]
widgets = widgets.values()
else:
self.widgets_names = ['_%s' % i for i in range(len(widgets))]
self.widgets = [w() if isinstance(w, type) else w for w in widgets]
super().__init__(attrs)
@property
def is_hidden(self):
return all(w.is_hidden for w in self.widgets)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
if self.is_localized:
for widget in self.widgets:
widget.is_localized = self.is_localized
# value is a list of values, each corresponding to a widget
# in self.widgets.
if not isinstance(value, list):
value = self.decompress(value)
final_attrs = context['widget']['attrs']
input_type = final_attrs.pop('type', None)
id_ = final_attrs.get('id')
subwidgets = []
for i, (widget_name, widget) in enumerate(zip(self.widgets_names, self.widgets)):
if input_type is not None:
widget.input_type = input_type
widget_name = name + widget_name
try:
widget_value = value[i]
except IndexError:
widget_value = None
if id_:
widget_attrs = final_attrs.copy()
widget_attrs['id'] = '%s_%s' % (id_, i)
else:
widget_attrs = final_attrs
subwidgets.append(widget.get_context(widget_name, widget_value, widget_attrs)['widget'])
context['widget']['subwidgets'] = subwidgets
return context
def id_for_label(self, id_):
return ''
def value_from_datadict(self, data, files, name):
return [
widget.value_from_datadict(data, files, name + widget_name)
for widget_name, widget in zip(self.widgets_names, self.widgets)
]
def value_omitted_from_data(self, data, files, name):
return all(
widget.value_omitted_from_data(data, files, name + widget_name)
for widget_name, widget in zip(self.widgets_names, self.widgets)
)
def decompress(self, value):
"""
Return a list of decompressed values for the given compressed value.
The given value can be assumed to be valid, but not necessarily
non-empty.
"""
raise NotImplementedError('Subclasses must implement this method.')
def _get_media(self):
"""
Media for a multiwidget is the combination of all media of the
subwidgets.
"""
media = Media()
for w in self.widgets:
media = media + w.media
return media
media = property(_get_media)
def __deepcopy__(self, memo):
obj = super().__deepcopy__(memo)
obj.widgets = copy.deepcopy(self.widgets)
return obj
@property
def needs_multipart_form(self):
return any(w.needs_multipart_form for w in self.widgets)
class SplitDateTimeWidget(MultiWidget):
"""
A widget that splits datetime input into two <input type="text"> boxes.
"""
supports_microseconds = False
template_name = 'django/forms/widgets/splitdatetime.html'
def __init__(self, attrs=None, date_format=None, time_format=None, date_attrs=None, time_attrs=None):
widgets = (
DateInput(
attrs=attrs if date_attrs is None else date_attrs,
format=date_format,
),
TimeInput(
attrs=attrs if time_attrs is None else time_attrs,
format=time_format,
),
)
super().__init__(widgets)
def decompress(self, value):
if value:
value = to_current_timezone(value)
return [value.date(), value.time()]
return [None, None]
class SplitHiddenDateTimeWidget(SplitDateTimeWidget):
"""
A widget that splits datetime input into two <input type="hidden"> inputs.
"""
template_name = 'django/forms/widgets/splithiddendatetime.html'
def __init__(self, attrs=None, date_format=None, time_format=None, date_attrs=None, time_attrs=None):
super().__init__(attrs, date_format, time_format, date_attrs, time_attrs)
for widget in self.widgets:
widget.input_type = 'hidden'
class SelectDateWidget(Widget):
"""
A widget that splits date input into three <select> boxes.
This also serves as an example of a Widget that has more than one HTML
element and hence implements value_from_datadict.
"""
none_value = ('', '---')
month_field = '%s_month'
day_field = '%s_day'
year_field = '%s_year'
template_name = 'django/forms/widgets/select_date.html'
input_type = 'select'
select_widget = Select
date_re = _lazy_re_compile(r'(\d{4}|0)-(\d\d?)-(\d\d?)$')
def __init__(self, attrs=None, years=None, months=None, empty_label=None):
self.attrs = attrs or {}
# Optional list or tuple of years to use in the "year" select box.
if years:
self.years = years
else:
this_year = datetime.date.today().year
self.years = range(this_year, this_year + 10)
# Optional dict of months to use in the "month" select box.
if months:
self.months = months
else:
self.months = MONTHS
# Optional string, list, or tuple to use as empty_label.
if isinstance(empty_label, (list, tuple)):
if not len(empty_label) == 3:
raise ValueError('empty_label list/tuple must have 3 elements.')
self.year_none_value = ('', empty_label[0])
self.month_none_value = ('', empty_label[1])
self.day_none_value = ('', empty_label[2])
else:
if empty_label is not None:
self.none_value = ('', empty_label)
self.year_none_value = self.none_value
self.month_none_value = self.none_value
self.day_none_value = self.none_value
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
date_context = {}
year_choices = [(i, str(i)) for i in self.years]
if not self.is_required:
year_choices.insert(0, self.year_none_value)
year_name = self.year_field % name
date_context['year'] = self.select_widget(attrs, choices=year_choices).get_context(
name=year_name,
value=context['widget']['value']['year'],
attrs={**context['widget']['attrs'], 'id': 'id_%s' % year_name},
)
month_choices = list(self.months.items())
if not self.is_required:
month_choices.insert(0, self.month_none_value)
month_name = self.month_field % name
date_context['month'] = self.select_widget(attrs, choices=month_choices).get_context(
name=month_name,
value=context['widget']['value']['month'],
attrs={**context['widget']['attrs'], 'id': 'id_%s' % month_name},
)
day_choices = [(i, i) for i in range(1, 32)]
if not self.is_required:
day_choices.insert(0, self.day_none_value)
day_name = self.day_field % name
date_context['day'] = self.select_widget(attrs, choices=day_choices,).get_context(
name=day_name,
value=context['widget']['value']['day'],
attrs={**context['widget']['attrs'], 'id': 'id_%s' % day_name},
)
subwidgets = []
for field in self._parse_date_fmt():
subwidgets.append(date_context[field]['widget'])
context['widget']['subwidgets'] = subwidgets
return context
def format_value(self, value):
"""
Return a dict containing the year, month, and day of the current value.
Use dict instead of a datetime to allow invalid dates such as February
31 to display correctly.
"""
year, month, day = None, None, None
if isinstance(value, (datetime.date, datetime.datetime)):
year, month, day = value.year, value.month, value.day
elif isinstance(value, str):
match = self.date_re.match(value)
if match:
# Convert any zeros in the date to empty strings to match the
# empty option value.
year, month, day = [int(val) or '' for val in match.groups()]
else:
input_format = get_format('DATE_INPUT_FORMATS')[0]
try:
d = datetime.datetime.strptime(value, input_format)
except ValueError:
pass
else:
year, month, day = d.year, d.month, d.day
return {'year': year, 'month': month, 'day': day}
@staticmethod
def _parse_date_fmt():
fmt = get_format('DATE_FORMAT')
escaped = False
for char in fmt:
if escaped:
escaped = False
elif char == '\\':
escaped = True
elif char in 'Yy':
yield 'year'
elif char in 'bEFMmNn':
yield 'month'
elif char in 'dj':
yield 'day'
def id_for_label(self, id_):
for first_select in self._parse_date_fmt():
return '%s_%s' % (id_, first_select)
return '%s_month' % id_
def value_from_datadict(self, data, files, name):
y = data.get(self.year_field % name)
m = data.get(self.month_field % name)
d = data.get(self.day_field % name)
if y == m == d == '':
return None
if y is not None and m is not None and d is not None:
input_format = get_format('DATE_INPUT_FORMATS')[0]
input_format = formats.sanitize_strftime_format(input_format)
try:
date_value = datetime.date(int(y), int(m), int(d))
except ValueError:
# Return pseudo-ISO dates with zeros for any unselected values,
# e.g. '2017-0-23'.
return '%s-%s-%s' % (y or 0, m or 0, d or 0)
return date_value.strftime(input_format)
return data.get(name)
def value_omitted_from_data(self, data, files, name):
return not any(
('{}_{}'.format(name, interval) in data)
for interval in ('year', 'month', 'day')
)
|
8d14110c63ad1353d09227aeeaccdd34435c2198ffcdd8b7327b7af0e957e504 | """
Multi-part parsing for file uploads.
Exposes one class, ``MultiPartParser``, which feeds chunks of uploaded data to
file upload handlers for processing.
"""
import base64
import binascii
import cgi
import collections
import html
from urllib.parse import unquote
from django.conf import settings
from django.core.exceptions import (
RequestDataTooBig, SuspiciousMultipartForm, TooManyFieldsSent,
)
from django.core.files.uploadhandler import (
SkipFile, StopFutureHandlers, StopUpload,
)
from django.utils.datastructures import MultiValueDict
from django.utils.encoding import force_str
__all__ = ('MultiPartParser', 'MultiPartParserError', 'InputStreamExhausted')
class MultiPartParserError(Exception):
pass
class InputStreamExhausted(Exception):
"""
No more reads are allowed from this device.
"""
pass
RAW = "raw"
FILE = "file"
FIELD = "field"
class MultiPartParser:
"""
A rfc2388 multipart/form-data parser.
``MultiValueDict.parse()`` reads the input stream in ``chunk_size`` chunks
and returns a tuple of ``(MultiValueDict(POST), MultiValueDict(FILES))``.
"""
def __init__(self, META, input_data, upload_handlers, encoding=None):
"""
Initialize the MultiPartParser object.
:META:
The standard ``META`` dictionary in Django request objects.
:input_data:
The raw post data, as a file-like object.
:upload_handlers:
A list of UploadHandler instances that perform operations on the
uploaded data.
:encoding:
The encoding with which to treat the incoming data.
"""
# Content-Type should contain multipart and the boundary information.
content_type = META.get('CONTENT_TYPE', '')
if not content_type.startswith('multipart/'):
raise MultiPartParserError('Invalid Content-Type: %s' % content_type)
# Parse the header to get the boundary to split the parts.
try:
ctypes, opts = parse_header(content_type.encode('ascii'))
except UnicodeEncodeError:
raise MultiPartParserError('Invalid non-ASCII Content-Type in multipart: %s' % force_str(content_type))
boundary = opts.get('boundary')
if not boundary or not cgi.valid_boundary(boundary):
raise MultiPartParserError('Invalid boundary in multipart: %s' % force_str(boundary))
# Content-Length should contain the length of the body we are about
# to receive.
try:
content_length = int(META.get('CONTENT_LENGTH', 0))
except (ValueError, TypeError):
content_length = 0
if content_length < 0:
# This means we shouldn't continue...raise an error.
raise MultiPartParserError("Invalid content length: %r" % content_length)
if isinstance(boundary, str):
boundary = boundary.encode('ascii')
self._boundary = boundary
self._input_data = input_data
# For compatibility with low-level network APIs (with 32-bit integers),
# the chunk size should be < 2^31, but still divisible by 4.
possible_sizes = [x.chunk_size for x in upload_handlers if x.chunk_size]
self._chunk_size = min([2 ** 31 - 4] + possible_sizes)
self._meta = META
self._encoding = encoding or settings.DEFAULT_CHARSET
self._content_length = content_length
self._upload_handlers = upload_handlers
def parse(self):
"""
Parse the POST data and break it into a FILES MultiValueDict and a POST
MultiValueDict.
Return a tuple containing the POST and FILES dictionary, respectively.
"""
from django.http import QueryDict
encoding = self._encoding
handlers = self._upload_handlers
# HTTP spec says that Content-Length >= 0 is valid
# handling content-length == 0 before continuing
if self._content_length == 0:
return QueryDict(encoding=self._encoding), MultiValueDict()
# See if any of the handlers take care of the parsing.
# This allows overriding everything if need be.
for handler in handlers:
result = handler.handle_raw_input(
self._input_data,
self._meta,
self._content_length,
self._boundary,
encoding,
)
# Check to see if it was handled
if result is not None:
return result[0], result[1]
# Create the data structures to be used later.
self._post = QueryDict(mutable=True)
self._files = MultiValueDict()
# Instantiate the parser and stream:
stream = LazyStream(ChunkIter(self._input_data, self._chunk_size))
# Whether or not to signal a file-completion at the beginning of the loop.
old_field_name = None
counters = [0] * len(handlers)
# Number of bytes that have been read.
num_bytes_read = 0
# To count the number of keys in the request.
num_post_keys = 0
# To limit the amount of data read from the request.
read_size = None
# Whether a file upload is finished.
uploaded_file = True
try:
for item_type, meta_data, field_stream in Parser(stream, self._boundary):
if old_field_name:
# We run this at the beginning of the next loop
# since we cannot be sure a file is complete until
# we hit the next boundary/part of the multipart content.
self.handle_file_complete(old_field_name, counters)
old_field_name = None
uploaded_file = True
try:
disposition = meta_data['content-disposition'][1]
field_name = disposition['name'].strip()
except (KeyError, IndexError, AttributeError):
continue
transfer_encoding = meta_data.get('content-transfer-encoding')
if transfer_encoding is not None:
transfer_encoding = transfer_encoding[0].strip()
field_name = force_str(field_name, encoding, errors='replace')
if item_type == FIELD:
# Avoid storing more than DATA_UPLOAD_MAX_NUMBER_FIELDS.
num_post_keys += 1
if (settings.DATA_UPLOAD_MAX_NUMBER_FIELDS is not None and
settings.DATA_UPLOAD_MAX_NUMBER_FIELDS < num_post_keys):
raise TooManyFieldsSent(
'The number of GET/POST parameters exceeded '
'settings.DATA_UPLOAD_MAX_NUMBER_FIELDS.'
)
# Avoid reading more than DATA_UPLOAD_MAX_MEMORY_SIZE.
if settings.DATA_UPLOAD_MAX_MEMORY_SIZE is not None:
read_size = settings.DATA_UPLOAD_MAX_MEMORY_SIZE - num_bytes_read
# This is a post field, we can just set it in the post
if transfer_encoding == 'base64':
raw_data = field_stream.read(size=read_size)
num_bytes_read += len(raw_data)
try:
data = base64.b64decode(raw_data)
except binascii.Error:
data = raw_data
else:
data = field_stream.read(size=read_size)
num_bytes_read += len(data)
# Add two here to make the check consistent with the
# x-www-form-urlencoded check that includes '&='.
num_bytes_read += len(field_name) + 2
if (settings.DATA_UPLOAD_MAX_MEMORY_SIZE is not None and
num_bytes_read > settings.DATA_UPLOAD_MAX_MEMORY_SIZE):
raise RequestDataTooBig('Request body exceeded settings.DATA_UPLOAD_MAX_MEMORY_SIZE.')
self._post.appendlist(field_name, force_str(data, encoding, errors='replace'))
elif item_type == FILE:
# This is a file, use the handler...
file_name = disposition.get('filename')
if file_name:
file_name = force_str(file_name, encoding, errors='replace')
file_name = self.sanitize_file_name(file_name)
if not file_name:
continue
content_type, content_type_extra = meta_data.get('content-type', ('', {}))
content_type = content_type.strip()
charset = content_type_extra.get('charset')
try:
content_length = int(meta_data.get('content-length')[0])
except (IndexError, TypeError, ValueError):
content_length = None
counters = [0] * len(handlers)
uploaded_file = False
try:
for handler in handlers:
try:
handler.new_file(
field_name, file_name, content_type,
content_length, charset, content_type_extra,
)
except StopFutureHandlers:
break
for chunk in field_stream:
if transfer_encoding == 'base64':
# We only special-case base64 transfer encoding
# We should always decode base64 chunks by multiple of 4,
# ignoring whitespace.
stripped_chunk = b"".join(chunk.split())
remaining = len(stripped_chunk) % 4
while remaining != 0:
over_chunk = field_stream.read(4 - remaining)
stripped_chunk += b"".join(over_chunk.split())
remaining = len(stripped_chunk) % 4
try:
chunk = base64.b64decode(stripped_chunk)
except Exception as exc:
# Since this is only a chunk, any error is an unfixable error.
raise MultiPartParserError("Could not decode base64 data.") from exc
for i, handler in enumerate(handlers):
chunk_length = len(chunk)
chunk = handler.receive_data_chunk(chunk, counters[i])
counters[i] += chunk_length
if chunk is None:
# Don't continue if the chunk received by
# the handler is None.
break
except SkipFile:
self._close_files()
# Just use up the rest of this file...
exhaust(field_stream)
else:
# Handle file upload completions on next iteration.
old_field_name = field_name
else:
# If this is neither a FIELD or a FILE, just exhaust the stream.
exhaust(stream)
except StopUpload as e:
self._close_files()
if not e.connection_reset:
exhaust(self._input_data)
else:
if not uploaded_file:
for handler in handlers:
handler.upload_interrupted()
# Make sure that the request data is all fed
exhaust(self._input_data)
# Signal that the upload has completed.
# any() shortcircuits if a handler's upload_complete() returns a value.
any(handler.upload_complete() for handler in handlers)
self._post._mutable = False
return self._post, self._files
def handle_file_complete(self, old_field_name, counters):
"""
Handle all the signaling that takes place when a file is complete.
"""
for i, handler in enumerate(self._upload_handlers):
file_obj = handler.file_complete(counters[i])
if file_obj:
# If it returns a file object, then set the files dict.
self._files.appendlist(force_str(old_field_name, self._encoding, errors='replace'), file_obj)
break
def sanitize_file_name(self, file_name):
"""
Sanitize the filename of an upload.
Remove all possible path separators, even though that might remove more
than actually required by the target system. Filenames that could
potentially cause problems (current/parent dir) are also discarded.
It should be noted that this function could still return a "filepath"
like "C:some_file.txt" which is handled later on by the storage layer.
So while this function does sanitize filenames to some extent, the
resulting filename should still be considered as untrusted user input.
"""
file_name = html.unescape(file_name)
file_name = file_name.rsplit('/')[-1]
file_name = file_name.rsplit('\\')[-1]
if file_name in {'', '.', '..'}:
return None
return file_name
IE_sanitize = sanitize_file_name
def _close_files(self):
# Free up all file handles.
# FIXME: this currently assumes that upload handlers store the file as 'file'
# We should document that... (Maybe add handler.free_file to complement new_file)
for handler in self._upload_handlers:
if hasattr(handler, 'file'):
handler.file.close()
class LazyStream:
"""
The LazyStream wrapper allows one to get and "unget" bytes from a stream.
Given a producer object (an iterator that yields bytestrings), the
LazyStream object will support iteration, reading, and keeping a "look-back"
variable in case you need to "unget" some bytes.
"""
def __init__(self, producer, length=None):
"""
Every LazyStream must have a producer when instantiated.
A producer is an iterable that returns a string each time it
is called.
"""
self._producer = producer
self._empty = False
self._leftover = b''
self.length = length
self.position = 0
self._remaining = length
self._unget_history = []
def tell(self):
return self.position
def read(self, size=None):
def parts():
remaining = self._remaining if size is None else size
# do the whole thing in one shot if no limit was provided.
if remaining is None:
yield b''.join(self)
return
# otherwise do some bookkeeping to return exactly enough
# of the stream and stashing any extra content we get from
# the producer
while remaining != 0:
assert remaining > 0, 'remaining bytes to read should never go negative'
try:
chunk = next(self)
except StopIteration:
return
else:
emitting = chunk[:remaining]
self.unget(chunk[remaining:])
remaining -= len(emitting)
yield emitting
return b''.join(parts())
def __next__(self):
"""
Used when the exact number of bytes to read is unimportant.
Return whatever chunk is conveniently returned from the iterator.
Useful to avoid unnecessary bookkeeping if performance is an issue.
"""
if self._leftover:
output = self._leftover
self._leftover = b''
else:
output = next(self._producer)
self._unget_history = []
self.position += len(output)
return output
def close(self):
"""
Used to invalidate/disable this lazy stream.
Replace the producer with an empty list. Any leftover bytes that have
already been read will still be reported upon read() and/or next().
"""
self._producer = []
def __iter__(self):
return self
def unget(self, bytes):
"""
Place bytes back onto the front of the lazy stream.
Future calls to read() will return those bytes first. The
stream position and thus tell() will be rewound.
"""
if not bytes:
return
self._update_unget_history(len(bytes))
self.position -= len(bytes)
self._leftover = bytes + self._leftover
def _update_unget_history(self, num_bytes):
"""
Update the unget history as a sanity check to see if we've pushed
back the same number of bytes in one chunk. If we keep ungetting the
same number of bytes many times (here, 50), we're mostly likely in an
infinite loop of some sort. This is usually caused by a
maliciously-malformed MIME request.
"""
self._unget_history = [num_bytes] + self._unget_history[:49]
number_equal = len([
current_number for current_number in self._unget_history
if current_number == num_bytes
])
if number_equal > 40:
raise SuspiciousMultipartForm(
"The multipart parser got stuck, which shouldn't happen with"
" normal uploaded files. Check for malicious upload activity;"
" if there is none, report this to the Django developers."
)
class ChunkIter:
"""
An iterable that will yield chunks of data. Given a file-like object as the
constructor, yield chunks of read operations from that object.
"""
def __init__(self, flo, chunk_size=64 * 1024):
self.flo = flo
self.chunk_size = chunk_size
def __next__(self):
try:
data = self.flo.read(self.chunk_size)
except InputStreamExhausted:
raise StopIteration()
if data:
return data
else:
raise StopIteration()
def __iter__(self):
return self
class InterBoundaryIter:
"""
A Producer that will iterate over boundaries.
"""
def __init__(self, stream, boundary):
self._stream = stream
self._boundary = boundary
def __iter__(self):
return self
def __next__(self):
try:
return LazyStream(BoundaryIter(self._stream, self._boundary))
except InputStreamExhausted:
raise StopIteration()
class BoundaryIter:
"""
A Producer that is sensitive to boundaries.
Will happily yield bytes until a boundary is found. Will yield the bytes
before the boundary, throw away the boundary bytes themselves, and push the
post-boundary bytes back on the stream.
The future calls to next() after locating the boundary will raise a
StopIteration exception.
"""
def __init__(self, stream, boundary):
self._stream = stream
self._boundary = boundary
self._done = False
# rollback an additional six bytes because the format is like
# this: CRLF<boundary>[--CRLF]
self._rollback = len(boundary) + 6
# Try to use mx fast string search if available. Otherwise
# use Python find. Wrap the latter for consistency.
unused_char = self._stream.read(1)
if not unused_char:
raise InputStreamExhausted()
self._stream.unget(unused_char)
def __iter__(self):
return self
def __next__(self):
if self._done:
raise StopIteration()
stream = self._stream
rollback = self._rollback
bytes_read = 0
chunks = []
for bytes in stream:
bytes_read += len(bytes)
chunks.append(bytes)
if bytes_read > rollback:
break
if not bytes:
break
else:
self._done = True
if not chunks:
raise StopIteration()
chunk = b''.join(chunks)
boundary = self._find_boundary(chunk)
if boundary:
end, next = boundary
stream.unget(chunk[next:])
self._done = True
return chunk[:end]
else:
# make sure we don't treat a partial boundary (and
# its separators) as data
if not chunk[:-rollback]: # and len(chunk) >= (len(self._boundary) + 6):
# There's nothing left, we should just return and mark as done.
self._done = True
return chunk
else:
stream.unget(chunk[-rollback:])
return chunk[:-rollback]
def _find_boundary(self, data):
"""
Find a multipart boundary in data.
Should no boundary exist in the data, return None. Otherwise, return
a tuple containing the indices of the following:
* the end of current encapsulation
* the start of the next encapsulation
"""
index = data.find(self._boundary)
if index < 0:
return None
else:
end = index
next = index + len(self._boundary)
# backup over CRLF
last = max(0, end - 1)
if data[last:last + 1] == b'\n':
end -= 1
last = max(0, end - 1)
if data[last:last + 1] == b'\r':
end -= 1
return end, next
def exhaust(stream_or_iterable):
"""Exhaust an iterator or stream."""
try:
iterator = iter(stream_or_iterable)
except TypeError:
iterator = ChunkIter(stream_or_iterable, 16384)
collections.deque(iterator, maxlen=0) # consume iterator quickly.
def parse_boundary_stream(stream, max_header_size):
"""
Parse one and exactly one stream that encapsulates a boundary.
"""
# Stream at beginning of header, look for end of header
# and parse it if found. The header must fit within one
# chunk.
chunk = stream.read(max_header_size)
# 'find' returns the top of these four bytes, so we'll
# need to munch them later to prevent them from polluting
# the payload.
header_end = chunk.find(b'\r\n\r\n')
def _parse_header(line):
main_value_pair, params = parse_header(line)
try:
name, value = main_value_pair.split(':', 1)
except ValueError:
raise ValueError("Invalid header: %r" % line)
return name, (value, params)
if header_end == -1:
# we find no header, so we just mark this fact and pass on
# the stream verbatim
stream.unget(chunk)
return (RAW, {}, stream)
header = chunk[:header_end]
# here we place any excess chunk back onto the stream, as
# well as throwing away the CRLFCRLF bytes from above.
stream.unget(chunk[header_end + 4:])
TYPE = RAW
outdict = {}
# Eliminate blank lines
for line in header.split(b'\r\n'):
# This terminology ("main value" and "dictionary of
# parameters") is from the Python docs.
try:
name, (value, params) = _parse_header(line)
except ValueError:
continue
if name == 'content-disposition':
TYPE = FIELD
if params.get('filename'):
TYPE = FILE
outdict[name] = value, params
if TYPE == RAW:
stream.unget(chunk)
return (TYPE, outdict, stream)
class Parser:
def __init__(self, stream, boundary):
self._stream = stream
self._separator = b'--' + boundary
def __iter__(self):
boundarystream = InterBoundaryIter(self._stream, self._separator)
for sub_stream in boundarystream:
# Iterate over each part
yield parse_boundary_stream(sub_stream, 1024)
def parse_header(line):
"""
Parse the header into a key-value.
Input (line): bytes, output: str for key/name, bytes for values which
will be decoded later.
"""
plist = _parse_header_params(b';' + line)
key = plist.pop(0).lower().decode('ascii')
pdict = {}
for p in plist:
i = p.find(b'=')
if i >= 0:
has_encoding = False
name = p[:i].strip().lower().decode('ascii')
if name.endswith('*'):
# Lang/encoding embedded in the value (like "filename*=UTF-8''file.ext")
# https://tools.ietf.org/html/rfc2231#section-4
name = name[:-1]
if p.count(b"'") == 2:
has_encoding = True
value = p[i + 1:].strip()
if len(value) >= 2 and value[:1] == value[-1:] == b'"':
value = value[1:-1]
value = value.replace(b'\\\\', b'\\').replace(b'\\"', b'"')
if has_encoding:
encoding, lang, value = value.split(b"'")
value = unquote(value.decode(), encoding=encoding.decode())
pdict[name] = value
return key, pdict
def _parse_header_params(s):
plist = []
while s[:1] == b';':
s = s[1:]
end = s.find(b';')
while end > 0 and s.count(b'"', 0, end) % 2:
end = s.find(b';', end + 1)
if end < 0:
end = len(s)
f = s[:end]
plist.append(f.strip())
s = s[end:]
return plist
|
c293fa7f2736c1ee9c7482d3dfb49838559ec9cd7d6318e29d7c6ffdb9f28d5f | """Translation helper functions."""
import functools
import gettext as gettext_module
import os
import re
import sys
import warnings
from asgiref.local import Local
from django.apps import apps
from django.conf import settings
from django.conf.locale import LANG_INFO
from django.core.exceptions import AppRegistryNotReady
from django.core.signals import setting_changed
from django.dispatch import receiver
from django.utils.regex_helper import _lazy_re_compile
from django.utils.safestring import SafeData, mark_safe
from . import to_language, to_locale
# Translations are cached in a dictionary for every language.
# The active translations are stored by threadid to make them thread local.
_translations = {}
_active = Local()
# The default translation is based on the settings file.
_default = None
# magic gettext number to separate context from message
CONTEXT_SEPARATOR = "\x04"
# Format of Accept-Language header values. From RFC 2616, section 14.4 and 3.9
# and RFC 3066, section 2.1
accept_language_re = _lazy_re_compile(r'''
([A-Za-z]{1,8}(?:-[A-Za-z0-9]{1,8})*|\*) # "en", "en-au", "x-y-z", "es-419", "*"
(?:\s*;\s*q=(0(?:\.\d{,3})?|1(?:\.0{,3})?))? # Optional "q=1.00", "q=0.8"
(?:\s*,\s*|$) # Multiple accepts per header.
''', re.VERBOSE)
language_code_re = _lazy_re_compile(
r'^[a-z]{1,8}(?:-[a-z0-9]{1,8})*(?:@[a-z0-9]{1,20})?$',
re.IGNORECASE
)
language_code_prefix_re = _lazy_re_compile(r'^/(\w+([@-]\w+){0,2})(/|$)')
@receiver(setting_changed)
def reset_cache(**kwargs):
"""
Reset global state when LANGUAGES setting has been changed, as some
languages should no longer be accepted.
"""
if kwargs['setting'] in ('LANGUAGES', 'LANGUAGE_CODE'):
check_for_language.cache_clear()
get_languages.cache_clear()
get_supported_language_variant.cache_clear()
class TranslationCatalog:
"""
Simulate a dict for DjangoTranslation._catalog so as multiple catalogs
with different plural equations are kept separate.
"""
def __init__(self, trans=None):
self._catalogs = [trans._catalog.copy()] if trans else [{}]
self._plurals = [trans.plural] if trans else [lambda n: int(n != 1)]
def __getitem__(self, key):
for cat in self._catalogs:
try:
return cat[key]
except KeyError:
pass
raise KeyError(key)
def __setitem__(self, key, value):
self._catalogs[0][key] = value
def __contains__(self, key):
return any(key in cat for cat in self._catalogs)
def items(self):
for cat in self._catalogs:
yield from cat.items()
def keys(self):
for cat in self._catalogs:
yield from cat.keys()
def update(self, trans):
# Merge if plural function is the same, else prepend.
for cat, plural in zip(self._catalogs, self._plurals):
if trans.plural.__code__ == plural.__code__:
cat.update(trans._catalog)
break
else:
self._catalogs.insert(0, trans._catalog.copy())
self._plurals.insert(0, trans.plural)
def get(self, key, default=None):
missing = object()
for cat in self._catalogs:
result = cat.get(key, missing)
if result is not missing:
return result
return default
def plural(self, msgid, num):
for cat, plural in zip(self._catalogs, self._plurals):
tmsg = cat.get((msgid, plural(num)))
if tmsg is not None:
return tmsg
raise KeyError
class DjangoTranslation(gettext_module.GNUTranslations):
"""
Set up the GNUTranslations context with regard to output charset.
This translation object will be constructed out of multiple GNUTranslations
objects by merging their catalogs. It will construct an object for the
requested language and add a fallback to the default language, if it's
different from the requested language.
"""
domain = 'django'
def __init__(self, language, domain=None, localedirs=None):
"""Create a GNUTranslations() using many locale directories"""
gettext_module.GNUTranslations.__init__(self)
if domain is not None:
self.domain = domain
self.__language = language
self.__to_language = to_language(language)
self.__locale = to_locale(language)
self._catalog = None
# If a language doesn't have a catalog, use the Germanic default for
# pluralization: anything except one is pluralized.
self.plural = lambda n: int(n != 1)
if self.domain == 'django':
if localedirs is not None:
# A module-level cache is used for caching 'django' translations
warnings.warn("localedirs is ignored when domain is 'django'.", RuntimeWarning)
localedirs = None
self._init_translation_catalog()
if localedirs:
for localedir in localedirs:
translation = self._new_gnu_trans(localedir)
self.merge(translation)
else:
self._add_installed_apps_translations()
self._add_local_translations()
if self.__language == settings.LANGUAGE_CODE and self.domain == 'django' and self._catalog is None:
# default lang should have at least one translation file available.
raise OSError('No translation files found for default language %s.' % settings.LANGUAGE_CODE)
self._add_fallback(localedirs)
if self._catalog is None:
# No catalogs found for this language, set an empty catalog.
self._catalog = TranslationCatalog()
def __repr__(self):
return "<DjangoTranslation lang:%s>" % self.__language
def _new_gnu_trans(self, localedir, use_null_fallback=True):
"""
Return a mergeable gettext.GNUTranslations instance.
A convenience wrapper. By default gettext uses 'fallback=False'.
Using param `use_null_fallback` to avoid confusion with any other
references to 'fallback'.
"""
return gettext_module.translation(
domain=self.domain,
localedir=localedir,
languages=[self.__locale],
fallback=use_null_fallback,
)
def _init_translation_catalog(self):
"""Create a base catalog using global django translations."""
settingsfile = sys.modules[settings.__module__].__file__
localedir = os.path.join(os.path.dirname(settingsfile), 'locale')
translation = self._new_gnu_trans(localedir)
self.merge(translation)
def _add_installed_apps_translations(self):
"""Merge translations from each installed app."""
try:
app_configs = reversed(list(apps.get_app_configs()))
except AppRegistryNotReady:
raise AppRegistryNotReady(
"The translation infrastructure cannot be initialized before the "
"apps registry is ready. Check that you don't make non-lazy "
"gettext calls at import time.")
for app_config in app_configs:
localedir = os.path.join(app_config.path, 'locale')
if os.path.exists(localedir):
translation = self._new_gnu_trans(localedir)
self.merge(translation)
def _add_local_translations(self):
"""Merge translations defined in LOCALE_PATHS."""
for localedir in reversed(settings.LOCALE_PATHS):
translation = self._new_gnu_trans(localedir)
self.merge(translation)
def _add_fallback(self, localedirs=None):
"""Set the GNUTranslations() fallback with the default language."""
# Don't set a fallback for the default language or any English variant
# (as it's empty, so it'll ALWAYS fall back to the default language)
if self.__language == settings.LANGUAGE_CODE or self.__language.startswith('en'):
return
if self.domain == 'django':
# Get from cache
default_translation = translation(settings.LANGUAGE_CODE)
else:
default_translation = DjangoTranslation(
settings.LANGUAGE_CODE, domain=self.domain, localedirs=localedirs
)
self.add_fallback(default_translation)
def merge(self, other):
"""Merge another translation into this catalog."""
if not getattr(other, '_catalog', None):
return # NullTranslations() has no _catalog
if self._catalog is None:
# Take plural and _info from first catalog found (generally Django's).
self.plural = other.plural
self._info = other._info.copy()
self._catalog = TranslationCatalog(other)
else:
self._catalog.update(other)
if other._fallback:
self.add_fallback(other._fallback)
def language(self):
"""Return the translation language."""
return self.__language
def to_language(self):
"""Return the translation language name."""
return self.__to_language
def ngettext(self, msgid1, msgid2, n):
try:
tmsg = self._catalog.plural(msgid1, n)
except KeyError:
if self._fallback:
return self._fallback.ngettext(msgid1, msgid2, n)
if n == 1:
tmsg = msgid1
else:
tmsg = msgid2
return tmsg
def translation(language):
"""
Return a translation object in the default 'django' domain.
"""
global _translations
if language not in _translations:
_translations[language] = DjangoTranslation(language)
return _translations[language]
def activate(language):
"""
Fetch the translation object for a given language and install it as the
current translation object for the current thread.
"""
if not language:
return
_active.value = translation(language)
def deactivate():
"""
Uninstall the active translation object so that further _() calls resolve
to the default translation object.
"""
if hasattr(_active, "value"):
del _active.value
def deactivate_all():
"""
Make the active translation object a NullTranslations() instance. This is
useful when we want delayed translations to appear as the original string
for some reason.
"""
_active.value = gettext_module.NullTranslations()
_active.value.to_language = lambda *args: None
def get_language():
"""Return the currently selected language."""
t = getattr(_active, "value", None)
if t is not None:
try:
return t.to_language()
except AttributeError:
pass
# If we don't have a real translation object, assume it's the default language.
return settings.LANGUAGE_CODE
def get_language_bidi():
"""
Return selected language's BiDi layout.
* False = left-to-right layout
* True = right-to-left layout
"""
lang = get_language()
if lang is None:
return False
else:
base_lang = get_language().split('-')[0]
return base_lang in settings.LANGUAGES_BIDI
def catalog():
"""
Return the current active catalog for further processing.
This can be used if you need to modify the catalog or want to access the
whole message catalog instead of just translating one string.
"""
global _default
t = getattr(_active, "value", None)
if t is not None:
return t
if _default is None:
_default = translation(settings.LANGUAGE_CODE)
return _default
def gettext(message):
"""
Translate the 'message' string. It uses the current thread to find the
translation object to use. If no current translation is activated, the
message will be run through the default translation object.
"""
global _default
eol_message = message.replace('\r\n', '\n').replace('\r', '\n')
if eol_message:
_default = _default or translation(settings.LANGUAGE_CODE)
translation_object = getattr(_active, "value", _default)
result = translation_object.gettext(eol_message)
else:
# Return an empty value of the corresponding type if an empty message
# is given, instead of metadata, which is the default gettext behavior.
result = type(message)('')
if isinstance(message, SafeData):
return mark_safe(result)
return result
def pgettext(context, message):
msg_with_ctxt = "%s%s%s" % (context, CONTEXT_SEPARATOR, message)
result = gettext(msg_with_ctxt)
if CONTEXT_SEPARATOR in result:
# Translation not found
result = message
elif isinstance(message, SafeData):
result = mark_safe(result)
return result
def gettext_noop(message):
"""
Mark strings for translation but don't translate them now. This can be
used to store strings in global variables that should stay in the base
language (because they might be used externally) and will be translated
later.
"""
return message
def do_ntranslate(singular, plural, number, translation_function):
global _default
t = getattr(_active, "value", None)
if t is not None:
return getattr(t, translation_function)(singular, plural, number)
if _default is None:
_default = translation(settings.LANGUAGE_CODE)
return getattr(_default, translation_function)(singular, plural, number)
def ngettext(singular, plural, number):
"""
Return a string of the translation of either the singular or plural,
based on the number.
"""
return do_ntranslate(singular, plural, number, 'ngettext')
def npgettext(context, singular, plural, number):
msgs_with_ctxt = ("%s%s%s" % (context, CONTEXT_SEPARATOR, singular),
"%s%s%s" % (context, CONTEXT_SEPARATOR, plural),
number)
result = ngettext(*msgs_with_ctxt)
if CONTEXT_SEPARATOR in result:
# Translation not found
result = ngettext(singular, plural, number)
return result
def all_locale_paths():
"""
Return a list of paths to user-provides languages files.
"""
globalpath = os.path.join(
os.path.dirname(sys.modules[settings.__module__].__file__), 'locale')
app_paths = []
for app_config in apps.get_app_configs():
locale_path = os.path.join(app_config.path, 'locale')
if os.path.exists(locale_path):
app_paths.append(locale_path)
return [globalpath, *settings.LOCALE_PATHS, *app_paths]
@functools.lru_cache(maxsize=1000)
def check_for_language(lang_code):
"""
Check whether there is a global language file for the given language
code. This is used to decide whether a user-provided language is
available.
lru_cache should have a maxsize to prevent from memory exhaustion attacks,
as the provided language codes are taken from the HTTP request. See also
<https://www.djangoproject.com/weblog/2007/oct/26/security-fix/>.
"""
# First, a quick check to make sure lang_code is well-formed (#21458)
if lang_code is None or not language_code_re.search(lang_code):
return False
return any(
gettext_module.find('django', path, [to_locale(lang_code)]) is not None
for path in all_locale_paths()
)
@functools.lru_cache
def get_languages():
"""
Cache of settings.LANGUAGES in a dictionary for easy lookups by key.
"""
return dict(settings.LANGUAGES)
@functools.lru_cache(maxsize=1000)
def get_supported_language_variant(lang_code, strict=False):
"""
Return the language code that's listed in supported languages, possibly
selecting a more generic variant. Raise LookupError if nothing is found.
If `strict` is False (the default), look for a country-specific variant
when neither the language code nor its generic variant is found.
lru_cache should have a maxsize to prevent from memory exhaustion attacks,
as the provided language codes are taken from the HTTP request. See also
<https://www.djangoproject.com/weblog/2007/oct/26/security-fix/>.
"""
if lang_code:
# If 'zh-hant-tw' is not supported, try special fallback or subsequent
# language codes i.e. 'zh-hant' and 'zh'.
possible_lang_codes = [lang_code]
try:
possible_lang_codes.extend(LANG_INFO[lang_code]['fallback'])
except KeyError:
pass
i = None
while (i := lang_code.rfind('-', 0, i)) > -1:
possible_lang_codes.append(lang_code[:i])
generic_lang_code = possible_lang_codes[-1]
supported_lang_codes = get_languages()
for code in possible_lang_codes:
if code in supported_lang_codes and check_for_language(code):
return code
if not strict:
# if fr-fr is not supported, try fr-ca.
for supported_code in supported_lang_codes:
if supported_code.startswith(generic_lang_code + '-'):
return supported_code
raise LookupError(lang_code)
def get_language_from_path(path, strict=False):
"""
Return the language code if there's a valid language code found in `path`.
If `strict` is False (the default), look for a country-specific variant
when neither the language code nor its generic variant is found.
"""
regex_match = language_code_prefix_re.match(path)
if not regex_match:
return None
lang_code = regex_match[1]
try:
return get_supported_language_variant(lang_code, strict=strict)
except LookupError:
return None
def get_language_from_request(request, check_path=False):
"""
Analyze the request to find what language the user wants the system to
show. Only languages listed in settings.LANGUAGES are taken into account.
If the user requests a sublanguage where we have a main language, we send
out the main language.
If check_path is True, the URL path prefix will be checked for a language
code, otherwise this is skipped for backwards compatibility.
"""
if check_path:
lang_code = get_language_from_path(request.path_info)
if lang_code is not None:
return lang_code
lang_code = request.COOKIES.get(settings.LANGUAGE_COOKIE_NAME)
if lang_code is not None and lang_code in get_languages() and check_for_language(lang_code):
return lang_code
try:
return get_supported_language_variant(lang_code)
except LookupError:
pass
accept = request.META.get('HTTP_ACCEPT_LANGUAGE', '')
for accept_lang, unused in parse_accept_lang_header(accept):
if accept_lang == '*':
break
if not language_code_re.search(accept_lang):
continue
try:
return get_supported_language_variant(accept_lang)
except LookupError:
continue
try:
return get_supported_language_variant(settings.LANGUAGE_CODE)
except LookupError:
return settings.LANGUAGE_CODE
@functools.lru_cache(maxsize=1000)
def parse_accept_lang_header(lang_string):
"""
Parse the lang_string, which is the body of an HTTP Accept-Language
header, and return a tuple of (lang, q-value), ordered by 'q' values.
Return an empty tuple if there are any format errors in lang_string.
"""
result = []
pieces = accept_language_re.split(lang_string.lower())
if pieces[-1]:
return ()
for i in range(0, len(pieces) - 1, 3):
first, lang, priority = pieces[i:i + 3]
if first:
return ()
if priority:
priority = float(priority)
else:
priority = 1.0
result.append((lang, priority))
result.sort(key=lambda k: k[1], reverse=True)
return tuple(result)
|
ddea5e2800b0bc18fe70e5fd1bb5d3fbe3c1627a40ffa00e466e54171ce60326 | import copy
from collections import defaultdict
from contextlib import contextmanager
from functools import partial
from django.apps import AppConfig
from django.apps.registry import Apps, apps as global_apps
from django.conf import settings
from django.core.exceptions import FieldDoesNotExist
from django.db import models
from django.db.migrations.utils import field_is_referenced, get_references
from django.db.models import NOT_PROVIDED
from django.db.models.fields.related import RECURSIVE_RELATIONSHIP_CONSTANT
from django.db.models.options import DEFAULT_NAMES, normalize_together
from django.db.models.utils import make_model_tuple
from django.utils.functional import cached_property
from django.utils.module_loading import import_string
from django.utils.version import get_docs_version
from .exceptions import InvalidBasesError
from .utils import resolve_relation
def _get_app_label_and_model_name(model, app_label=''):
if isinstance(model, str):
split = model.split('.', 1)
return tuple(split) if len(split) == 2 else (app_label, split[0])
else:
return model._meta.app_label, model._meta.model_name
def _get_related_models(m):
"""Return all models that have a direct relationship to the given model."""
related_models = [
subclass for subclass in m.__subclasses__()
if issubclass(subclass, models.Model)
]
related_fields_models = set()
for f in m._meta.get_fields(include_parents=True, include_hidden=True):
if f.is_relation and f.related_model is not None and not isinstance(f.related_model, str):
related_fields_models.add(f.model)
related_models.append(f.related_model)
# Reverse accessors of foreign keys to proxy models are attached to their
# concrete proxied model.
opts = m._meta
if opts.proxy and m in related_fields_models:
related_models.append(opts.concrete_model)
return related_models
def get_related_models_tuples(model):
"""
Return a list of typical (app_label, model_name) tuples for all related
models for the given model.
"""
return {
(rel_mod._meta.app_label, rel_mod._meta.model_name)
for rel_mod in _get_related_models(model)
}
def get_related_models_recursive(model):
"""
Return all models that have a direct or indirect relationship
to the given model.
Relationships are either defined by explicit relational fields, like
ForeignKey, ManyToManyField or OneToOneField, or by inheriting from another
model (a superclass is related to its subclasses, but not vice versa). Note,
however, that a model inheriting from a concrete model is also related to
its superclass through the implicit *_ptr OneToOneField on the subclass.
"""
seen = set()
queue = _get_related_models(model)
for rel_mod in queue:
rel_app_label, rel_model_name = rel_mod._meta.app_label, rel_mod._meta.model_name
if (rel_app_label, rel_model_name) in seen:
continue
seen.add((rel_app_label, rel_model_name))
queue.extend(_get_related_models(rel_mod))
return seen - {(model._meta.app_label, model._meta.model_name)}
class ProjectState:
"""
Represent the entire project's overall state. This is the item that is
passed around - do it here rather than at the app level so that cross-app
FKs/etc. resolve properly.
"""
def __init__(self, models=None, real_apps=None):
self.models = models or {}
# Apps to include from main registry, usually unmigrated ones
if real_apps is None:
real_apps = set()
else:
assert isinstance(real_apps, set)
self.real_apps = real_apps
self.is_delayed = False
# {remote_model_key: {model_key: {field_name: field}}}
self._relations = None
@property
def relations(self):
if self._relations is None:
self.resolve_fields_and_relations()
return self._relations
def add_model(self, model_state):
model_key = model_state.app_label, model_state.name_lower
self.models[model_key] = model_state
if self._relations is not None:
self.resolve_model_relations(model_key)
if 'apps' in self.__dict__: # hasattr would cache the property
self.reload_model(*model_key)
def remove_model(self, app_label, model_name):
model_key = app_label, model_name
del self.models[model_key]
if self._relations is not None:
self._relations.pop(model_key, None)
# Call list() since _relations can change size during iteration.
for related_model_key, model_relations in list(self._relations.items()):
model_relations.pop(model_key, None)
if not model_relations:
del self._relations[related_model_key]
if 'apps' in self.__dict__: # hasattr would cache the property
self.apps.unregister_model(*model_key)
# Need to do this explicitly since unregister_model() doesn't clear
# the cache automatically (#24513)
self.apps.clear_cache()
def rename_model(self, app_label, old_name, new_name):
# Add a new model.
old_name_lower = old_name.lower()
new_name_lower = new_name.lower()
renamed_model = self.models[app_label, old_name_lower].clone()
renamed_model.name = new_name
self.models[app_label, new_name_lower] = renamed_model
# Repoint all fields pointing to the old model to the new one.
old_model_tuple = (app_label, old_name_lower)
new_remote_model = f'{app_label}.{new_name}'
to_reload = set()
for model_state, name, field, reference in get_references(self, old_model_tuple):
changed_field = None
if reference.to:
changed_field = field.clone()
changed_field.remote_field.model = new_remote_model
if reference.through:
if changed_field is None:
changed_field = field.clone()
changed_field.remote_field.through = new_remote_model
if changed_field:
model_state.fields[name] = changed_field
to_reload.add((model_state.app_label, model_state.name_lower))
if self._relations is not None:
old_name_key = app_label, old_name_lower
new_name_key = app_label, new_name_lower
if old_name_key in self._relations:
self._relations[new_name_key] = self._relations.pop(old_name_key)
for model_relations in self._relations.values():
if old_name_key in model_relations:
model_relations[new_name_key] = model_relations.pop(old_name_key)
# Reload models related to old model before removing the old model.
self.reload_models(to_reload, delay=True)
# Remove the old model.
self.remove_model(app_label, old_name_lower)
self.reload_model(app_label, new_name_lower, delay=True)
def alter_model_options(self, app_label, model_name, options, option_keys=None):
model_state = self.models[app_label, model_name]
model_state.options = {**model_state.options, **options}
if option_keys:
for key in option_keys:
if key not in options:
model_state.options.pop(key, False)
self.reload_model(app_label, model_name, delay=True)
def alter_model_managers(self, app_label, model_name, managers):
model_state = self.models[app_label, model_name]
model_state.managers = list(managers)
self.reload_model(app_label, model_name, delay=True)
def _append_option(self, app_label, model_name, option_name, obj):
model_state = self.models[app_label, model_name]
model_state.options[option_name] = [*model_state.options[option_name], obj]
self.reload_model(app_label, model_name, delay=True)
def _remove_option(self, app_label, model_name, option_name, obj_name):
model_state = self.models[app_label, model_name]
objs = model_state.options[option_name]
model_state.options[option_name] = [obj for obj in objs if obj.name != obj_name]
self.reload_model(app_label, model_name, delay=True)
def add_index(self, app_label, model_name, index):
self._append_option(app_label, model_name, 'indexes', index)
def remove_index(self, app_label, model_name, index_name):
self._remove_option(app_label, model_name, 'indexes', index_name)
def add_constraint(self, app_label, model_name, constraint):
self._append_option(app_label, model_name, 'constraints', constraint)
def remove_constraint(self, app_label, model_name, constraint_name):
self._remove_option(app_label, model_name, 'constraints', constraint_name)
def add_field(self, app_label, model_name, name, field, preserve_default):
# If preserve default is off, don't use the default for future state.
if not preserve_default:
field = field.clone()
field.default = NOT_PROVIDED
else:
field = field
model_key = app_label, model_name
self.models[model_key].fields[name] = field
if self._relations is not None:
self.resolve_model_field_relations(model_key, name, field)
# Delay rendering of relationships if it's not a relational field.
delay = not field.is_relation
self.reload_model(*model_key, delay=delay)
def remove_field(self, app_label, model_name, name):
model_key = app_label, model_name
model_state = self.models[model_key]
old_field = model_state.fields.pop(name)
if self._relations is not None:
self.resolve_model_field_relations(model_key, name, old_field)
# Delay rendering of relationships if it's not a relational field.
delay = not old_field.is_relation
self.reload_model(*model_key, delay=delay)
def alter_field(self, app_label, model_name, name, field, preserve_default):
if not preserve_default:
field = field.clone()
field.default = NOT_PROVIDED
else:
field = field
model_key = app_label, model_name
fields = self.models[model_key].fields
if self._relations is not None:
old_field = fields.pop(name)
if old_field.is_relation:
self.resolve_model_field_relations(model_key, name, old_field)
fields[name] = field
if field.is_relation:
self.resolve_model_field_relations(model_key, name, field)
else:
fields[name] = field
# TODO: investigate if old relational fields must be reloaded or if
# it's sufficient if the new field is (#27737).
# Delay rendering of relationships if it's not a relational field and
# not referenced by a foreign key.
delay = (
not field.is_relation and
not field_is_referenced(self, model_key, (name, field))
)
self.reload_model(*model_key, delay=delay)
def rename_field(self, app_label, model_name, old_name, new_name):
model_key = app_label, model_name
model_state = self.models[model_key]
# Rename the field.
fields = model_state.fields
try:
found = fields.pop(old_name)
except KeyError:
raise FieldDoesNotExist(
f"{app_label}.{model_name} has no field named '{old_name}'"
)
fields[new_name] = found
for field in fields.values():
# Fix from_fields to refer to the new field.
from_fields = getattr(field, 'from_fields', None)
if from_fields:
field.from_fields = tuple([
new_name if from_field_name == old_name else from_field_name
for from_field_name in from_fields
])
# Fix index/unique_together to refer to the new field.
options = model_state.options
for option in ('index_together', 'unique_together'):
if option in options:
options[option] = [
[new_name if n == old_name else n for n in together]
for together in options[option]
]
# Fix to_fields to refer to the new field.
delay = True
references = get_references(self, model_key, (old_name, found))
for *_, field, reference in references:
delay = False
if reference.to:
remote_field, to_fields = reference.to
if getattr(remote_field, 'field_name', None) == old_name:
remote_field.field_name = new_name
if to_fields:
field.to_fields = tuple([
new_name if to_field_name == old_name else to_field_name
for to_field_name in to_fields
])
if self._relations is not None:
old_name_lower = old_name.lower()
new_name_lower = new_name.lower()
for to_model in self._relations.values():
if old_name_lower in to_model[model_key]:
field = to_model[model_key].pop(old_name_lower)
field.name = new_name_lower
to_model[model_key][new_name_lower] = field
self.reload_model(*model_key, delay=delay)
def _find_reload_model(self, app_label, model_name, delay=False):
if delay:
self.is_delayed = True
related_models = set()
try:
old_model = self.apps.get_model(app_label, model_name)
except LookupError:
pass
else:
# Get all relations to and from the old model before reloading,
# as _meta.apps may change
if delay:
related_models = get_related_models_tuples(old_model)
else:
related_models = get_related_models_recursive(old_model)
# Get all outgoing references from the model to be rendered
model_state = self.models[(app_label, model_name)]
# Directly related models are the models pointed to by ForeignKeys,
# OneToOneFields, and ManyToManyFields.
direct_related_models = set()
for field in model_state.fields.values():
if field.is_relation:
if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
continue
rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
direct_related_models.add((rel_app_label, rel_model_name.lower()))
# For all direct related models recursively get all related models.
related_models.update(direct_related_models)
for rel_app_label, rel_model_name in direct_related_models:
try:
rel_model = self.apps.get_model(rel_app_label, rel_model_name)
except LookupError:
pass
else:
if delay:
related_models.update(get_related_models_tuples(rel_model))
else:
related_models.update(get_related_models_recursive(rel_model))
# Include the model itself
related_models.add((app_label, model_name))
return related_models
def reload_model(self, app_label, model_name, delay=False):
if 'apps' in self.__dict__: # hasattr would cache the property
related_models = self._find_reload_model(app_label, model_name, delay)
self._reload(related_models)
def reload_models(self, models, delay=True):
if 'apps' in self.__dict__: # hasattr would cache the property
related_models = set()
for app_label, model_name in models:
related_models.update(self._find_reload_model(app_label, model_name, delay))
self._reload(related_models)
def _reload(self, related_models):
# Unregister all related models
with self.apps.bulk_update():
for rel_app_label, rel_model_name in related_models:
self.apps.unregister_model(rel_app_label, rel_model_name)
states_to_be_rendered = []
# Gather all models states of those models that will be rerendered.
# This includes:
# 1. All related models of unmigrated apps
for model_state in self.apps.real_models:
if (model_state.app_label, model_state.name_lower) in related_models:
states_to_be_rendered.append(model_state)
# 2. All related models of migrated apps
for rel_app_label, rel_model_name in related_models:
try:
model_state = self.models[rel_app_label, rel_model_name]
except KeyError:
pass
else:
states_to_be_rendered.append(model_state)
# Render all models
self.apps.render_multiple(states_to_be_rendered)
def update_model_field_relation(
self, model, model_key, field_name, field, concretes,
):
remote_model_key = resolve_relation(model, *model_key)
if remote_model_key[0] not in self.real_apps and remote_model_key in concretes:
remote_model_key = concretes[remote_model_key]
relations_to_remote_model = self._relations[remote_model_key]
if field_name in self.models[model_key].fields:
# The assert holds because it's a new relation, or an altered
# relation, in which case references have been removed by
# alter_field().
assert field_name not in relations_to_remote_model[model_key]
relations_to_remote_model[model_key][field_name] = field
else:
del relations_to_remote_model[model_key][field_name]
if not relations_to_remote_model[model_key]:
del relations_to_remote_model[model_key]
def resolve_model_field_relations(
self, model_key, field_name, field, concretes=None,
):
remote_field = field.remote_field
if not remote_field:
return
if concretes is None:
concretes, _ = self._get_concrete_models_mapping_and_proxy_models()
self.update_model_field_relation(
remote_field.model, model_key, field_name, field, concretes,
)
through = getattr(remote_field, 'through', None)
if not through:
return
self.update_model_field_relation(through, model_key, field_name, field, concretes)
def resolve_model_relations(self, model_key, concretes=None):
if concretes is None:
concretes, _ = self._get_concrete_models_mapping_and_proxy_models()
model_state = self.models[model_key]
for field_name, field in model_state.fields.items():
self.resolve_model_field_relations(model_key, field_name, field, concretes)
def resolve_fields_and_relations(self):
# Resolve fields.
for model_state in self.models.values():
for field_name, field in model_state.fields.items():
field.name = field_name
# Resolve relations.
# {remote_model_key: {model_key: {field_name: field}}}
self._relations = defaultdict(partial(defaultdict, dict))
concretes, proxies = self._get_concrete_models_mapping_and_proxy_models()
for model_key in concretes:
self.resolve_model_relations(model_key, concretes)
for model_key in proxies:
self._relations[model_key] = self._relations[concretes[model_key]]
def get_concrete_model_key(self, model):
concrete_models_mapping, _ = self._get_concrete_models_mapping_and_proxy_models()
model_key = make_model_tuple(model)
return concrete_models_mapping[model_key]
def _get_concrete_models_mapping_and_proxy_models(self):
concrete_models_mapping = {}
proxy_models = {}
# Split models to proxy and concrete models.
for model_key, model_state in self.models.items():
if model_state.options.get('proxy'):
proxy_models[model_key] = model_state
# Find a concrete model for the proxy.
concrete_models_mapping[model_key] = self._find_concrete_model_from_proxy(
proxy_models, model_state,
)
else:
concrete_models_mapping[model_key] = model_key
return concrete_models_mapping, proxy_models
def _find_concrete_model_from_proxy(self, proxy_models, model_state):
for base in model_state.bases:
if not (isinstance(base, str) or issubclass(base, models.Model)):
continue
base_key = make_model_tuple(base)
base_state = proxy_models.get(base_key)
if not base_state:
# Concrete model found, stop looking at bases.
return base_key
return self._find_concrete_model_from_proxy(proxy_models, base_state)
def clone(self):
"""Return an exact copy of this ProjectState."""
new_state = ProjectState(
models={k: v.clone() for k, v in self.models.items()},
real_apps=self.real_apps,
)
if 'apps' in self.__dict__:
new_state.apps = self.apps.clone()
new_state.is_delayed = self.is_delayed
return new_state
def clear_delayed_apps_cache(self):
if self.is_delayed and 'apps' in self.__dict__:
del self.__dict__['apps']
@cached_property
def apps(self):
return StateApps(self.real_apps, self.models)
@classmethod
def from_apps(cls, apps):
"""Take an Apps and return a ProjectState matching it."""
app_models = {}
for model in apps.get_models(include_swapped=True):
model_state = ModelState.from_model(model)
app_models[(model_state.app_label, model_state.name_lower)] = model_state
return cls(app_models)
def __eq__(self, other):
return self.models == other.models and self.real_apps == other.real_apps
class AppConfigStub(AppConfig):
"""Stub of an AppConfig. Only provides a label and a dict of models."""
def __init__(self, label):
self.apps = None
self.models = {}
# App-label and app-name are not the same thing, so technically passing
# in the label here is wrong. In practice, migrations don't care about
# the app name, but we need something unique, and the label works fine.
self.label = label
self.name = label
def import_models(self):
self.models = self.apps.all_models[self.label]
class StateApps(Apps):
"""
Subclass of the global Apps registry class to better handle dynamic model
additions and removals.
"""
def __init__(self, real_apps, models, ignore_swappable=False):
# Any apps in self.real_apps should have all their models included
# in the render. We don't use the original model instances as there
# are some variables that refer to the Apps object.
# FKs/M2Ms from real apps are also not included as they just
# mess things up with partial states (due to lack of dependencies)
self.real_models = []
for app_label in real_apps:
app = global_apps.get_app_config(app_label)
for model in app.get_models():
self.real_models.append(ModelState.from_model(model, exclude_rels=True))
# Populate the app registry with a stub for each application.
app_labels = {model_state.app_label for model_state in models.values()}
app_configs = [AppConfigStub(label) for label in sorted([*real_apps, *app_labels])]
super().__init__(app_configs)
# These locks get in the way of copying as implemented in clone(),
# which is called whenever Django duplicates a StateApps before
# updating it.
self._lock = None
self.ready_event = None
self.render_multiple([*models.values(), *self.real_models])
# There shouldn't be any operations pending at this point.
from django.core.checks.model_checks import _check_lazy_references
ignore = {make_model_tuple(settings.AUTH_USER_MODEL)} if ignore_swappable else set()
errors = _check_lazy_references(self, ignore=ignore)
if errors:
raise ValueError("\n".join(error.msg for error in errors))
@contextmanager
def bulk_update(self):
# Avoid clearing each model's cache for each change. Instead, clear
# all caches when we're finished updating the model instances.
ready = self.ready
self.ready = False
try:
yield
finally:
self.ready = ready
self.clear_cache()
def render_multiple(self, model_states):
# We keep trying to render the models in a loop, ignoring invalid
# base errors, until the size of the unrendered models doesn't
# decrease by at least one, meaning there's a base dependency loop/
# missing base.
if not model_states:
return
# Prevent that all model caches are expired for each render.
with self.bulk_update():
unrendered_models = model_states
while unrendered_models:
new_unrendered_models = []
for model in unrendered_models:
try:
model.render(self)
except InvalidBasesError:
new_unrendered_models.append(model)
if len(new_unrendered_models) == len(unrendered_models):
raise InvalidBasesError(
"Cannot resolve bases for %r\nThis can happen if you are inheriting models from an "
"app with migrations (e.g. contrib.auth)\n in an app with no migrations; see "
"https://docs.djangoproject.com/en/%s/topics/migrations/#dependencies "
"for more" % (new_unrendered_models, get_docs_version())
)
unrendered_models = new_unrendered_models
def clone(self):
"""Return a clone of this registry."""
clone = StateApps([], {})
clone.all_models = copy.deepcopy(self.all_models)
clone.app_configs = copy.deepcopy(self.app_configs)
# Set the pointer to the correct app registry.
for app_config in clone.app_configs.values():
app_config.apps = clone
# No need to actually clone them, they'll never change
clone.real_models = self.real_models
return clone
def register_model(self, app_label, model):
self.all_models[app_label][model._meta.model_name] = model
if app_label not in self.app_configs:
self.app_configs[app_label] = AppConfigStub(app_label)
self.app_configs[app_label].apps = self
self.app_configs[app_label].models[model._meta.model_name] = model
self.do_pending_operations(model)
self.clear_cache()
def unregister_model(self, app_label, model_name):
try:
del self.all_models[app_label][model_name]
del self.app_configs[app_label].models[model_name]
except KeyError:
pass
class ModelState:
"""
Represent a Django Model. Don't use the actual Model class as it's not
designed to have its options changed - instead, mutate this one and then
render it into a Model as required.
Note that while you are allowed to mutate .fields, you are not allowed
to mutate the Field instances inside there themselves - you must instead
assign new ones, as these are not detached during a clone.
"""
def __init__(self, app_label, name, fields, options=None, bases=None, managers=None):
self.app_label = app_label
self.name = name
self.fields = dict(fields)
self.options = options or {}
self.options.setdefault('indexes', [])
self.options.setdefault('constraints', [])
self.bases = bases or (models.Model,)
self.managers = managers or []
for name, field in self.fields.items():
# Sanity-check that fields are NOT already bound to a model.
if hasattr(field, 'model'):
raise ValueError(
'ModelState.fields cannot be bound to a model - "%s" is.' % name
)
# Sanity-check that relation fields are NOT referring to a model class.
if field.is_relation and hasattr(field.related_model, '_meta'):
raise ValueError(
'ModelState.fields cannot refer to a model class - "%s.to" does. '
'Use a string reference instead.' % name
)
if field.many_to_many and hasattr(field.remote_field.through, '_meta'):
raise ValueError(
'ModelState.fields cannot refer to a model class - "%s.through" does. '
'Use a string reference instead.' % name
)
# Sanity-check that indexes have their name set.
for index in self.options['indexes']:
if not index.name:
raise ValueError(
"Indexes passed to ModelState require a name attribute. "
"%r doesn't have one." % index
)
@cached_property
def name_lower(self):
return self.name.lower()
def get_field(self, field_name):
field_name = (
self.options['order_with_respect_to']
if field_name == '_order'
else field_name
)
return self.fields[field_name]
@classmethod
def from_model(cls, model, exclude_rels=False):
"""Given a model, return a ModelState representing it."""
# Deconstruct the fields
fields = []
for field in model._meta.local_fields:
if getattr(field, "remote_field", None) and exclude_rels:
continue
if isinstance(field, models.OrderWrt):
continue
name = field.name
try:
fields.append((name, field.clone()))
except TypeError as e:
raise TypeError("Couldn't reconstruct field %s on %s: %s" % (
name,
model._meta.label,
e,
))
if not exclude_rels:
for field in model._meta.local_many_to_many:
name = field.name
try:
fields.append((name, field.clone()))
except TypeError as e:
raise TypeError("Couldn't reconstruct m2m field %s on %s: %s" % (
name,
model._meta.object_name,
e,
))
# Extract the options
options = {}
for name in DEFAULT_NAMES:
# Ignore some special options
if name in ["apps", "app_label"]:
continue
elif name in model._meta.original_attrs:
if name == "unique_together":
ut = model._meta.original_attrs["unique_together"]
options[name] = set(normalize_together(ut))
elif name == "index_together":
it = model._meta.original_attrs["index_together"]
options[name] = set(normalize_together(it))
elif name == "indexes":
indexes = [idx.clone() for idx in model._meta.indexes]
for index in indexes:
if not index.name:
index.set_name_with_model(model)
options['indexes'] = indexes
elif name == 'constraints':
options['constraints'] = [con.clone() for con in model._meta.constraints]
else:
options[name] = model._meta.original_attrs[name]
# If we're ignoring relationships, remove all field-listing model
# options (that option basically just means "make a stub model")
if exclude_rels:
for key in ["unique_together", "index_together", "order_with_respect_to"]:
if key in options:
del options[key]
# Private fields are ignored, so remove options that refer to them.
elif options.get('order_with_respect_to') in {field.name for field in model._meta.private_fields}:
del options['order_with_respect_to']
def flatten_bases(model):
bases = []
for base in model.__bases__:
if hasattr(base, "_meta") and base._meta.abstract:
bases.extend(flatten_bases(base))
else:
bases.append(base)
return bases
# We can't rely on __mro__ directly because we only want to flatten
# abstract models and not the whole tree. However by recursing on
# __bases__ we may end up with duplicates and ordering issues, we
# therefore discard any duplicates and reorder the bases according
# to their index in the MRO.
flattened_bases = sorted(set(flatten_bases(model)), key=lambda x: model.__mro__.index(x))
# Make our record
bases = tuple(
(
base._meta.label_lower
if hasattr(base, "_meta") else
base
)
for base in flattened_bases
)
# Ensure at least one base inherits from models.Model
if not any((isinstance(base, str) or issubclass(base, models.Model)) for base in bases):
bases = (models.Model,)
managers = []
manager_names = set()
default_manager_shim = None
for manager in model._meta.managers:
if manager.name in manager_names:
# Skip overridden managers.
continue
elif manager.use_in_migrations:
# Copy managers usable in migrations.
new_manager = copy.copy(manager)
new_manager._set_creation_counter()
elif manager is model._base_manager or manager is model._default_manager:
# Shim custom managers used as default and base managers.
new_manager = models.Manager()
new_manager.model = manager.model
new_manager.name = manager.name
if manager is model._default_manager:
default_manager_shim = new_manager
else:
continue
manager_names.add(manager.name)
managers.append((manager.name, new_manager))
# Ignore a shimmed default manager called objects if it's the only one.
if managers == [('objects', default_manager_shim)]:
managers = []
# Construct the new ModelState
return cls(
model._meta.app_label,
model._meta.object_name,
fields,
options,
bases,
managers,
)
def construct_managers(self):
"""Deep-clone the managers using deconstruction."""
# Sort all managers by their creation counter
sorted_managers = sorted(self.managers, key=lambda v: v[1].creation_counter)
for mgr_name, manager in sorted_managers:
as_manager, manager_path, qs_path, args, kwargs = manager.deconstruct()
if as_manager:
qs_class = import_string(qs_path)
yield mgr_name, qs_class.as_manager()
else:
manager_class = import_string(manager_path)
yield mgr_name, manager_class(*args, **kwargs)
def clone(self):
"""Return an exact copy of this ModelState."""
return self.__class__(
app_label=self.app_label,
name=self.name,
fields=dict(self.fields),
# Since options are shallow-copied here, operations such as
# AddIndex must replace their option (e.g 'indexes') rather
# than mutating it.
options=dict(self.options),
bases=self.bases,
managers=list(self.managers),
)
def render(self, apps):
"""Create a Model object from our current state into the given apps."""
# First, make a Meta object
meta_contents = {'app_label': self.app_label, 'apps': apps, **self.options}
meta = type("Meta", (), meta_contents)
# Then, work out our bases
try:
bases = tuple(
(apps.get_model(base) if isinstance(base, str) else base)
for base in self.bases
)
except LookupError:
raise InvalidBasesError("Cannot resolve one or more bases from %r" % (self.bases,))
# Clone fields for the body, add other bits.
body = {name: field.clone() for name, field in self.fields.items()}
body['Meta'] = meta
body['__module__'] = "__fake__"
# Restore managers
body.update(self.construct_managers())
# Then, make a Model object (apps.register_model is called in __new__)
return type(self.name, bases, body)
def get_index_by_name(self, name):
for index in self.options['indexes']:
if index.name == name:
return index
raise ValueError("No index named %s on model %s" % (name, self.name))
def get_constraint_by_name(self, name):
for constraint in self.options['constraints']:
if constraint.name == name:
return constraint
raise ValueError('No constraint named %s on model %s' % (name, self.name))
def __repr__(self):
return "<%s: '%s.%s'>" % (self.__class__.__name__, self.app_label, self.name)
def __eq__(self, other):
return (
(self.app_label == other.app_label) and
(self.name == other.name) and
(len(self.fields) == len(other.fields)) and
all(
k1 == k2 and f1.deconstruct()[1:] == f2.deconstruct()[1:]
for (k1, f1), (k2, f2) in zip(
sorted(self.fields.items()),
sorted(other.fields.items()),
)
) and
(self.options == other.options) and
(self.bases == other.bases) and
(self.managers == other.managers)
)
|
d2813bd0aa178d1476878d0e12a0cb00202fcb78872fdb64e674809edecf3c66 | """
The main QuerySet implementation. This provides the public API for the ORM.
"""
import copy
import operator
import warnings
from itertools import chain
import django
from django.conf import settings
from django.core import exceptions
from django.db import (
DJANGO_VERSION_PICKLE_KEY, IntegrityError, NotSupportedError, connections,
router, transaction,
)
from django.db.models import AutoField, DateField, DateTimeField, sql
from django.db.models.constants import LOOKUP_SEP
from django.db.models.deletion import Collector
from django.db.models.expressions import Case, Expression, F, Ref, Value, When
from django.db.models.functions import Cast, Trunc
from django.db.models.query_utils import FilteredRelation, Q
from django.db.models.sql.constants import CURSOR, GET_ITERATOR_CHUNK_SIZE
from django.db.models.utils import create_namedtuple_class, resolve_callables
from django.utils import timezone
from django.utils.functional import cached_property, partition
# The maximum number of results to fetch in a get() query.
MAX_GET_RESULTS = 21
# The maximum number of items to display in a QuerySet.__repr__
REPR_OUTPUT_SIZE = 20
class BaseIterable:
def __init__(self, queryset, chunked_fetch=False, chunk_size=GET_ITERATOR_CHUNK_SIZE):
self.queryset = queryset
self.chunked_fetch = chunked_fetch
self.chunk_size = chunk_size
class ModelIterable(BaseIterable):
"""Iterable that yields a model instance for each row."""
def __iter__(self):
queryset = self.queryset
db = queryset.db
compiler = queryset.query.get_compiler(using=db)
# Execute the query. This will also fill compiler.select, klass_info,
# and annotations.
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
select, klass_info, annotation_col_map = (compiler.select, compiler.klass_info,
compiler.annotation_col_map)
model_cls = klass_info['model']
select_fields = klass_info['select_fields']
model_fields_start, model_fields_end = select_fields[0], select_fields[-1] + 1
init_list = [f[0].target.attname
for f in select[model_fields_start:model_fields_end]]
related_populators = get_related_populators(klass_info, select, db)
known_related_objects = [
(field, related_objs, operator.attrgetter(*[
field.attname
if from_field == 'self' else
queryset.model._meta.get_field(from_field).attname
for from_field in field.from_fields
])) for field, related_objs in queryset._known_related_objects.items()
]
for row in compiler.results_iter(results):
obj = model_cls.from_db(db, init_list, row[model_fields_start:model_fields_end])
for rel_populator in related_populators:
rel_populator.populate(row, obj)
if annotation_col_map:
for attr_name, col_pos in annotation_col_map.items():
setattr(obj, attr_name, row[col_pos])
# Add the known related objects to the model.
for field, rel_objs, rel_getter in known_related_objects:
# Avoid overwriting objects loaded by, e.g., select_related().
if field.is_cached(obj):
continue
rel_obj_id = rel_getter(obj)
try:
rel_obj = rel_objs[rel_obj_id]
except KeyError:
pass # May happen in qs1 | qs2 scenarios.
else:
setattr(obj, field.name, rel_obj)
yield obj
class ValuesIterable(BaseIterable):
"""
Iterable returned by QuerySet.values() that yields a dict for each row.
"""
def __iter__(self):
queryset = self.queryset
query = queryset.query
compiler = query.get_compiler(queryset.db)
# extra(select=...) cols are always at the start of the row.
names = [
*query.extra_select,
*query.values_select,
*query.annotation_select,
]
indexes = range(len(names))
for row in compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size):
yield {names[i]: row[i] for i in indexes}
class ValuesListIterable(BaseIterable):
"""
Iterable returned by QuerySet.values_list(flat=False) that yields a tuple
for each row.
"""
def __iter__(self):
queryset = self.queryset
query = queryset.query
compiler = query.get_compiler(queryset.db)
if queryset._fields:
# extra(select=...) cols are always at the start of the row.
names = [
*query.extra_select,
*query.values_select,
*query.annotation_select,
]
fields = [*queryset._fields, *(f for f in query.annotation_select if f not in queryset._fields)]
if fields != names:
# Reorder according to fields.
index_map = {name: idx for idx, name in enumerate(names)}
rowfactory = operator.itemgetter(*[index_map[f] for f in fields])
return map(
rowfactory,
compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
)
return compiler.results_iter(tuple_expected=True, chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
class NamedValuesListIterable(ValuesListIterable):
"""
Iterable returned by QuerySet.values_list(named=True) that yields a
namedtuple for each row.
"""
def __iter__(self):
queryset = self.queryset
if queryset._fields:
names = queryset._fields
else:
query = queryset.query
names = [*query.extra_select, *query.values_select, *query.annotation_select]
tuple_class = create_namedtuple_class(*names)
new = tuple.__new__
for row in super().__iter__():
yield new(tuple_class, row)
class FlatValuesListIterable(BaseIterable):
"""
Iterable returned by QuerySet.values_list(flat=True) that yields single
values.
"""
def __iter__(self):
queryset = self.queryset
compiler = queryset.query.get_compiler(queryset.db)
for row in compiler.results_iter(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size):
yield row[0]
class QuerySet:
"""Represent a lazy database lookup for a set of objects."""
def __init__(self, model=None, query=None, using=None, hints=None):
self.model = model
self._db = using
self._hints = hints or {}
self._query = query or sql.Query(self.model)
self._result_cache = None
self._sticky_filter = False
self._for_write = False
self._prefetch_related_lookups = ()
self._prefetch_done = False
self._known_related_objects = {} # {rel_field: {pk: rel_obj}}
self._iterable_class = ModelIterable
self._fields = None
self._defer_next_filter = False
self._deferred_filter = None
@property
def query(self):
if self._deferred_filter:
negate, args, kwargs = self._deferred_filter
self._filter_or_exclude_inplace(negate, args, kwargs)
self._deferred_filter = None
return self._query
@query.setter
def query(self, value):
if value.values_select:
self._iterable_class = ValuesIterable
self._query = value
def as_manager(cls):
# Address the circular dependency between `Queryset` and `Manager`.
from django.db.models.manager import Manager
manager = Manager.from_queryset(cls)()
manager._built_with_as_manager = True
return manager
as_manager.queryset_only = True
as_manager = classmethod(as_manager)
########################
# PYTHON MAGIC METHODS #
########################
def __deepcopy__(self, memo):
"""Don't populate the QuerySet's cache."""
obj = self.__class__()
for k, v in self.__dict__.items():
if k == '_result_cache':
obj.__dict__[k] = None
else:
obj.__dict__[k] = copy.deepcopy(v, memo)
return obj
def __getstate__(self):
# Force the cache to be fully populated.
self._fetch_all()
return {**self.__dict__, DJANGO_VERSION_PICKLE_KEY: django.__version__}
def __setstate__(self, state):
pickled_version = state.get(DJANGO_VERSION_PICKLE_KEY)
if pickled_version:
if pickled_version != django.__version__:
warnings.warn(
"Pickled queryset instance's Django version %s does not "
"match the current version %s."
% (pickled_version, django.__version__),
RuntimeWarning,
stacklevel=2,
)
else:
warnings.warn(
"Pickled queryset instance's Django version is not specified.",
RuntimeWarning,
stacklevel=2,
)
self.__dict__.update(state)
def __repr__(self):
data = list(self[:REPR_OUTPUT_SIZE + 1])
if len(data) > REPR_OUTPUT_SIZE:
data[-1] = "...(remaining elements truncated)..."
return '<%s %r>' % (self.__class__.__name__, data)
def __len__(self):
self._fetch_all()
return len(self._result_cache)
def __iter__(self):
"""
The queryset iterator protocol uses three nested iterators in the
default case:
1. sql.compiler.execute_sql()
- Returns 100 rows at time (constants.GET_ITERATOR_CHUNK_SIZE)
using cursor.fetchmany(). This part is responsible for
doing some column masking, and returning the rows in chunks.
2. sql.compiler.results_iter()
- Returns one row at time. At this point the rows are still just
tuples. In some cases the return values are converted to
Python values at this location.
3. self.iterator()
- Responsible for turning the rows into model objects.
"""
self._fetch_all()
return iter(self._result_cache)
def __bool__(self):
self._fetch_all()
return bool(self._result_cache)
def __getitem__(self, k):
"""Retrieve an item or slice from the set of results."""
if not isinstance(k, (int, slice)):
raise TypeError(
'QuerySet indices must be integers or slices, not %s.'
% type(k).__name__
)
if (
(isinstance(k, int) and k < 0) or
(isinstance(k, slice) and (
(k.start is not None and k.start < 0) or
(k.stop is not None and k.stop < 0)
))
):
raise ValueError('Negative indexing is not supported.')
if self._result_cache is not None:
return self._result_cache[k]
if isinstance(k, slice):
qs = self._chain()
if k.start is not None:
start = int(k.start)
else:
start = None
if k.stop is not None:
stop = int(k.stop)
else:
stop = None
qs.query.set_limits(start, stop)
return list(qs)[::k.step] if k.step else qs
qs = self._chain()
qs.query.set_limits(k, k + 1)
qs._fetch_all()
return qs._result_cache[0]
def __class_getitem__(cls, *args, **kwargs):
return cls
def __and__(self, other):
self._check_operator_queryset(other, '&')
self._merge_sanity_check(other)
if isinstance(other, EmptyQuerySet):
return other
if isinstance(self, EmptyQuerySet):
return self
combined = self._chain()
combined._merge_known_related_objects(other)
combined.query.combine(other.query, sql.AND)
return combined
def __or__(self, other):
self._check_operator_queryset(other, '|')
self._merge_sanity_check(other)
if isinstance(self, EmptyQuerySet):
return other
if isinstance(other, EmptyQuerySet):
return self
query = self if self.query.can_filter() else self.model._base_manager.filter(pk__in=self.values('pk'))
combined = query._chain()
combined._merge_known_related_objects(other)
if not other.query.can_filter():
other = other.model._base_manager.filter(pk__in=other.values('pk'))
combined.query.combine(other.query, sql.OR)
return combined
####################################
# METHODS THAT DO DATABASE QUERIES #
####################################
def _iterator(self, use_chunked_fetch, chunk_size):
yield from self._iterable_class(self, chunked_fetch=use_chunked_fetch, chunk_size=chunk_size)
def iterator(self, chunk_size=2000):
"""
An iterator over the results from applying this QuerySet to the
database.
"""
if chunk_size <= 0:
raise ValueError('Chunk size must be strictly positive.')
use_chunked_fetch = not connections[self.db].settings_dict.get('DISABLE_SERVER_SIDE_CURSORS')
return self._iterator(use_chunked_fetch, chunk_size)
def aggregate(self, *args, **kwargs):
"""
Return a dictionary containing the calculations (aggregation)
over the current queryset.
If args is present the expression is passed as a kwarg using
the Aggregate object's default alias.
"""
if self.query.distinct_fields:
raise NotImplementedError("aggregate() + distinct(fields) not implemented.")
self._validate_values_are_expressions((*args, *kwargs.values()), method_name='aggregate')
for arg in args:
# The default_alias property raises TypeError if default_alias
# can't be set automatically or AttributeError if it isn't an
# attribute.
try:
arg.default_alias
except (AttributeError, TypeError):
raise TypeError("Complex aggregates require an alias")
kwargs[arg.default_alias] = arg
query = self.query.chain()
for (alias, aggregate_expr) in kwargs.items():
query.add_annotation(aggregate_expr, alias, is_summary=True)
annotation = query.annotations[alias]
if not annotation.contains_aggregate:
raise TypeError("%s is not an aggregate expression" % alias)
for expr in annotation.get_source_expressions():
if expr.contains_aggregate and isinstance(expr, Ref) and expr.refs in kwargs:
name = expr.refs
raise exceptions.FieldError(
"Cannot compute %s('%s'): '%s' is an aggregate"
% (annotation.name, name, name)
)
return query.get_aggregation(self.db, kwargs)
def count(self):
"""
Perform a SELECT COUNT() and return the number of records as an
integer.
If the QuerySet is already fully cached, return the length of the
cached results set to avoid multiple SELECT COUNT(*) calls.
"""
if self._result_cache is not None:
return len(self._result_cache)
return self.query.get_count(using=self.db)
def get(self, *args, **kwargs):
"""
Perform the query and return a single object matching the given
keyword arguments.
"""
if self.query.combinator and (args or kwargs):
raise NotSupportedError(
'Calling QuerySet.get(...) with filters after %s() is not '
'supported.' % self.query.combinator
)
clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
if self.query.can_filter() and not self.query.distinct_fields:
clone = clone.order_by()
limit = None
if not clone.query.select_for_update or connections[clone.db].features.supports_select_for_update_with_limit:
limit = MAX_GET_RESULTS
clone.query.set_limits(high=limit)
num = len(clone)
if num == 1:
return clone._result_cache[0]
if not num:
raise self.model.DoesNotExist(
"%s matching query does not exist." %
self.model._meta.object_name
)
raise self.model.MultipleObjectsReturned(
'get() returned more than one %s -- it returned %s!' % (
self.model._meta.object_name,
num if not limit or num < limit else 'more than %s' % (limit - 1),
)
)
def create(self, **kwargs):
"""
Create a new object with the given kwargs, saving it to the database
and returning the created object.
"""
obj = self.model(**kwargs)
self._for_write = True
obj.save(force_insert=True, using=self.db)
return obj
def _prepare_for_bulk_create(self, objs):
for obj in objs:
if obj.pk is None:
# Populate new PK values.
obj.pk = obj._meta.pk.get_pk_value_on_save(obj)
obj._prepare_related_fields_for_save(operation_name='bulk_create')
def bulk_create(self, objs, batch_size=None, ignore_conflicts=False):
"""
Insert each of the instances into the database. Do *not* call
save() on each of the instances, do not send any pre/post_save
signals, and do not set the primary key attribute if it is an
autoincrement field (except if features.can_return_rows_from_bulk_insert=True).
Multi-table models are not supported.
"""
# When you bulk insert you don't get the primary keys back (if it's an
# autoincrement, except if can_return_rows_from_bulk_insert=True), so
# you can't insert into the child tables which references this. There
# are two workarounds:
# 1) This could be implemented if you didn't have an autoincrement pk
# 2) You could do it by doing O(n) normal inserts into the parent
# tables to get the primary keys back and then doing a single bulk
# insert into the childmost table.
# We currently set the primary keys on the objects when using
# PostgreSQL via the RETURNING ID clause. It should be possible for
# Oracle as well, but the semantics for extracting the primary keys is
# trickier so it's not done yet.
if batch_size is not None and batch_size <= 0:
raise ValueError('Batch size must be a positive integer.')
# Check that the parents share the same concrete model with the our
# model to detect the inheritance pattern ConcreteGrandParent ->
# MultiTableParent -> ProxyChild. Simply checking self.model._meta.proxy
# would not identify that case as involving multiple tables.
for parent in self.model._meta.get_parent_list():
if parent._meta.concrete_model is not self.model._meta.concrete_model:
raise ValueError("Can't bulk create a multi-table inherited model")
if not objs:
return objs
self._for_write = True
opts = self.model._meta
fields = opts.concrete_fields
objs = list(objs)
self._prepare_for_bulk_create(objs)
with transaction.atomic(using=self.db, savepoint=False):
objs_with_pk, objs_without_pk = partition(lambda o: o.pk is None, objs)
if objs_with_pk:
returned_columns = self._batched_insert(
objs_with_pk, fields, batch_size, ignore_conflicts=ignore_conflicts,
)
for obj_with_pk, results in zip(objs_with_pk, returned_columns):
for result, field in zip(results, opts.db_returning_fields):
if field != opts.pk:
setattr(obj_with_pk, field.attname, result)
for obj_with_pk in objs_with_pk:
obj_with_pk._state.adding = False
obj_with_pk._state.db = self.db
if objs_without_pk:
fields = [f for f in fields if not isinstance(f, AutoField)]
returned_columns = self._batched_insert(
objs_without_pk, fields, batch_size, ignore_conflicts=ignore_conflicts,
)
connection = connections[self.db]
if connection.features.can_return_rows_from_bulk_insert and not ignore_conflicts:
assert len(returned_columns) == len(objs_without_pk)
for obj_without_pk, results in zip(objs_without_pk, returned_columns):
for result, field in zip(results, opts.db_returning_fields):
setattr(obj_without_pk, field.attname, result)
obj_without_pk._state.adding = False
obj_without_pk._state.db = self.db
return objs
def bulk_update(self, objs, fields, batch_size=None):
"""
Update the given fields in each of the given objects in the database.
"""
if batch_size is not None and batch_size < 0:
raise ValueError('Batch size must be a positive integer.')
if not fields:
raise ValueError('Field names must be given to bulk_update().')
objs = tuple(objs)
if any(obj.pk is None for obj in objs):
raise ValueError('All bulk_update() objects must have a primary key set.')
fields = [self.model._meta.get_field(name) for name in fields]
if any(not f.concrete or f.many_to_many for f in fields):
raise ValueError('bulk_update() can only be used with concrete fields.')
if any(f.primary_key for f in fields):
raise ValueError('bulk_update() cannot be used with primary key fields.')
if not objs:
return 0
for obj in objs:
obj._prepare_related_fields_for_save(operation_name='bulk_update', fields=fields)
# PK is used twice in the resulting update query, once in the filter
# and once in the WHEN. Each field will also have one CAST.
connection = connections[self.db]
max_batch_size = connection.ops.bulk_batch_size(['pk', 'pk'] + fields, objs)
batch_size = min(batch_size, max_batch_size) if batch_size else max_batch_size
requires_casting = connection.features.requires_casted_case_in_updates
batches = (objs[i:i + batch_size] for i in range(0, len(objs), batch_size))
updates = []
for batch_objs in batches:
update_kwargs = {}
for field in fields:
when_statements = []
for obj in batch_objs:
attr = getattr(obj, field.attname)
if not isinstance(attr, Expression):
attr = Value(attr, output_field=field)
when_statements.append(When(pk=obj.pk, then=attr))
case_statement = Case(*when_statements, output_field=field)
if requires_casting:
case_statement = Cast(case_statement, output_field=field)
update_kwargs[field.attname] = case_statement
updates.append(([obj.pk for obj in batch_objs], update_kwargs))
rows_updated = 0
with transaction.atomic(using=self.db, savepoint=False):
for pks, update_kwargs in updates:
rows_updated += self.filter(pk__in=pks).update(**update_kwargs)
return rows_updated
bulk_update.alters_data = True
def get_or_create(self, defaults=None, **kwargs):
"""
Look up an object with the given kwargs, creating one if necessary.
Return a tuple of (object, created), where created is a boolean
specifying whether an object was created.
"""
# The get() needs to be targeted at the write database in order
# to avoid potential transaction consistency problems.
self._for_write = True
try:
return self.get(**kwargs), False
except self.model.DoesNotExist:
params = self._extract_model_params(defaults, **kwargs)
# Try to create an object using passed params.
try:
with transaction.atomic(using=self.db):
params = dict(resolve_callables(params))
return self.create(**params), True
except IntegrityError:
try:
return self.get(**kwargs), False
except self.model.DoesNotExist:
pass
raise
def update_or_create(self, defaults=None, **kwargs):
"""
Look up an object with the given kwargs, updating one with defaults
if it exists, otherwise create a new one.
Return a tuple (object, created), where created is a boolean
specifying whether an object was created.
"""
defaults = defaults or {}
self._for_write = True
with transaction.atomic(using=self.db):
# Lock the row so that a concurrent update is blocked until
# update_or_create() has performed its save.
obj, created = self.select_for_update().get_or_create(defaults, **kwargs)
if created:
return obj, created
for k, v in resolve_callables(defaults):
setattr(obj, k, v)
obj.save(using=self.db)
return obj, False
def _extract_model_params(self, defaults, **kwargs):
"""
Prepare `params` for creating a model instance based on the given
kwargs; for use by get_or_create().
"""
defaults = defaults or {}
params = {k: v for k, v in kwargs.items() if LOOKUP_SEP not in k}
params.update(defaults)
property_names = self.model._meta._property_names
invalid_params = []
for param in params:
try:
self.model._meta.get_field(param)
except exceptions.FieldDoesNotExist:
# It's okay to use a model's property if it has a setter.
if not (param in property_names and getattr(self.model, param).fset):
invalid_params.append(param)
if invalid_params:
raise exceptions.FieldError(
"Invalid field name(s) for model %s: '%s'." % (
self.model._meta.object_name,
"', '".join(sorted(invalid_params)),
))
return params
def _earliest(self, *fields):
"""
Return the earliest object according to fields (if given) or by the
model's Meta.get_latest_by.
"""
if fields:
order_by = fields
else:
order_by = getattr(self.model._meta, 'get_latest_by')
if order_by and not isinstance(order_by, (tuple, list)):
order_by = (order_by,)
if order_by is None:
raise ValueError(
"earliest() and latest() require either fields as positional "
"arguments or 'get_latest_by' in the model's Meta."
)
obj = self._chain()
obj.query.set_limits(high=1)
obj.query.clear_ordering(force=True)
obj.query.add_ordering(*order_by)
return obj.get()
def earliest(self, *fields):
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
return self._earliest(*fields)
def latest(self, *fields):
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
return self.reverse()._earliest(*fields)
def first(self):
"""Return the first object of a query or None if no match is found."""
for obj in (self if self.ordered else self.order_by('pk'))[:1]:
return obj
def last(self):
"""Return the last object of a query or None if no match is found."""
for obj in (self.reverse() if self.ordered else self.order_by('-pk'))[:1]:
return obj
def in_bulk(self, id_list=None, *, field_name='pk'):
"""
Return a dictionary mapping each of the given IDs to the object with
that ID. If `id_list` isn't provided, evaluate the entire QuerySet.
"""
if self.query.is_sliced:
raise TypeError("Cannot use 'limit' or 'offset' with in_bulk().")
opts = self.model._meta
unique_fields = [
constraint.fields[0]
for constraint in opts.total_unique_constraints
if len(constraint.fields) == 1
]
if (
field_name != 'pk' and
not opts.get_field(field_name).unique and
field_name not in unique_fields and
self.query.distinct_fields != (field_name,)
):
raise ValueError("in_bulk()'s field_name must be a unique field but %r isn't." % field_name)
if id_list is not None:
if not id_list:
return {}
filter_key = '{}__in'.format(field_name)
batch_size = connections[self.db].features.max_query_params
id_list = tuple(id_list)
# If the database has a limit on the number of query parameters
# (e.g. SQLite), retrieve objects in batches if necessary.
if batch_size and batch_size < len(id_list):
qs = ()
for offset in range(0, len(id_list), batch_size):
batch = id_list[offset:offset + batch_size]
qs += tuple(self.filter(**{filter_key: batch}).order_by())
else:
qs = self.filter(**{filter_key: id_list}).order_by()
else:
qs = self._chain()
return {getattr(obj, field_name): obj for obj in qs}
def delete(self):
"""Delete the records in the current QuerySet."""
self._not_support_combined_queries('delete')
if self.query.is_sliced:
raise TypeError("Cannot use 'limit' or 'offset' with delete().")
if self.query.distinct or self.query.distinct_fields:
raise TypeError('Cannot call delete() after .distinct().')
if self._fields is not None:
raise TypeError("Cannot call delete() after .values() or .values_list()")
del_query = self._chain()
# The delete is actually 2 queries - one to find related objects,
# and one to delete. Make sure that the discovery of related
# objects is performed on the same database as the deletion.
del_query._for_write = True
# Disable non-supported fields.
del_query.query.select_for_update = False
del_query.query.select_related = False
del_query.query.clear_ordering(force=True)
collector = Collector(using=del_query.db)
collector.collect(del_query)
deleted, _rows_count = collector.delete()
# Clear the result cache, in case this QuerySet gets reused.
self._result_cache = None
return deleted, _rows_count
delete.alters_data = True
delete.queryset_only = True
def _raw_delete(self, using):
"""
Delete objects found from the given queryset in single direct SQL
query. No signals are sent and there is no protection for cascades.
"""
query = self.query.clone()
query.__class__ = sql.DeleteQuery
cursor = query.get_compiler(using).execute_sql(CURSOR)
if cursor:
with cursor:
return cursor.rowcount
return 0
_raw_delete.alters_data = True
def update(self, **kwargs):
"""
Update all elements in the current QuerySet, setting all the given
fields to the appropriate values.
"""
self._not_support_combined_queries('update')
if self.query.is_sliced:
raise TypeError('Cannot update a query once a slice has been taken.')
self._for_write = True
query = self.query.chain(sql.UpdateQuery)
query.add_update_values(kwargs)
# Clear any annotations so that they won't be present in subqueries.
query.annotations = {}
with transaction.mark_for_rollback_on_error(using=self.db):
rows = query.get_compiler(self.db).execute_sql(CURSOR)
self._result_cache = None
return rows
update.alters_data = True
def _update(self, values):
"""
A version of update() that accepts field objects instead of field names.
Used primarily for model saving and not intended for use by general
code (it requires too much poking around at model internals to be
useful at that level).
"""
if self.query.is_sliced:
raise TypeError('Cannot update a query once a slice has been taken.')
query = self.query.chain(sql.UpdateQuery)
query.add_update_fields(values)
# Clear any annotations so that they won't be present in subqueries.
query.annotations = {}
self._result_cache = None
return query.get_compiler(self.db).execute_sql(CURSOR)
_update.alters_data = True
_update.queryset_only = False
def exists(self):
if self._result_cache is None:
return self.query.has_results(using=self.db)
return bool(self._result_cache)
def contains(self, obj):
"""Return True if the queryset contains an object."""
self._not_support_combined_queries('contains')
if self._fields is not None:
raise TypeError(
'Cannot call QuerySet.contains() after .values() or '
'.values_list().'
)
try:
if obj._meta.concrete_model != self.model._meta.concrete_model:
return False
except AttributeError:
raise TypeError("'obj' must be a model instance.")
if obj.pk is None:
raise ValueError(
'QuerySet.contains() cannot be used on unsaved objects.'
)
if self._result_cache is not None:
return obj in self._result_cache
return self.filter(pk=obj.pk).exists()
def _prefetch_related_objects(self):
# This method can only be called once the result cache has been filled.
prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
self._prefetch_done = True
def explain(self, *, format=None, **options):
return self.query.explain(using=self.db, format=format, **options)
##################################################
# PUBLIC METHODS THAT RETURN A QUERYSET SUBCLASS #
##################################################
def raw(self, raw_query, params=(), translations=None, using=None):
if using is None:
using = self.db
qs = RawQuerySet(raw_query, model=self.model, params=params, translations=translations, using=using)
qs._prefetch_related_lookups = self._prefetch_related_lookups[:]
return qs
def _values(self, *fields, **expressions):
clone = self._chain()
if expressions:
clone = clone.annotate(**expressions)
clone._fields = fields
clone.query.set_values(fields)
return clone
def values(self, *fields, **expressions):
fields += tuple(expressions)
clone = self._values(*fields, **expressions)
clone._iterable_class = ValuesIterable
return clone
def values_list(self, *fields, flat=False, named=False):
if flat and named:
raise TypeError("'flat' and 'named' can't be used together.")
if flat and len(fields) > 1:
raise TypeError("'flat' is not valid when values_list is called with more than one field.")
field_names = {f for f in fields if not hasattr(f, 'resolve_expression')}
_fields = []
expressions = {}
counter = 1
for field in fields:
if hasattr(field, 'resolve_expression'):
field_id_prefix = getattr(field, 'default_alias', field.__class__.__name__.lower())
while True:
field_id = field_id_prefix + str(counter)
counter += 1
if field_id not in field_names:
break
expressions[field_id] = field
_fields.append(field_id)
else:
_fields.append(field)
clone = self._values(*_fields, **expressions)
clone._iterable_class = (
NamedValuesListIterable if named
else FlatValuesListIterable if flat
else ValuesListIterable
)
return clone
def dates(self, field_name, kind, order='ASC'):
"""
Return a list of date objects representing all available dates for
the given field_name, scoped to 'kind'.
"""
if kind not in ('year', 'month', 'week', 'day'):
raise ValueError("'kind' must be one of 'year', 'month', 'week', or 'day'.")
if order not in ('ASC', 'DESC'):
raise ValueError("'order' must be either 'ASC' or 'DESC'.")
return self.annotate(
datefield=Trunc(field_name, kind, output_field=DateField()),
plain_field=F(field_name)
).values_list(
'datefield', flat=True
).distinct().filter(plain_field__isnull=False).order_by(('-' if order == 'DESC' else '') + 'datefield')
# RemovedInDjango50Warning: when the deprecation ends, remove is_dst
# argument.
def datetimes(self, field_name, kind, order='ASC', tzinfo=None, is_dst=timezone.NOT_PASSED):
"""
Return a list of datetime objects representing all available
datetimes for the given field_name, scoped to 'kind'.
"""
if kind not in ('year', 'month', 'week', 'day', 'hour', 'minute', 'second'):
raise ValueError(
"'kind' must be one of 'year', 'month', 'week', 'day', "
"'hour', 'minute', or 'second'."
)
if order not in ('ASC', 'DESC'):
raise ValueError("'order' must be either 'ASC' or 'DESC'.")
if settings.USE_TZ:
if tzinfo is None:
tzinfo = timezone.get_current_timezone()
else:
tzinfo = None
return self.annotate(
datetimefield=Trunc(
field_name,
kind,
output_field=DateTimeField(),
tzinfo=tzinfo,
is_dst=is_dst,
),
plain_field=F(field_name)
).values_list(
'datetimefield', flat=True
).distinct().filter(plain_field__isnull=False).order_by(('-' if order == 'DESC' else '') + 'datetimefield')
def none(self):
"""Return an empty QuerySet."""
clone = self._chain()
clone.query.set_empty()
return clone
##################################################################
# PUBLIC METHODS THAT ALTER ATTRIBUTES AND RETURN A NEW QUERYSET #
##################################################################
def all(self):
"""
Return a new QuerySet that is a copy of the current one. This allows a
QuerySet to proxy for a model manager in some cases.
"""
return self._chain()
def filter(self, *args, **kwargs):
"""
Return a new QuerySet instance with the args ANDed to the existing
set.
"""
self._not_support_combined_queries('filter')
return self._filter_or_exclude(False, args, kwargs)
def exclude(self, *args, **kwargs):
"""
Return a new QuerySet instance with NOT (args) ANDed to the existing
set.
"""
self._not_support_combined_queries('exclude')
return self._filter_or_exclude(True, args, kwargs)
def _filter_or_exclude(self, negate, args, kwargs):
if (args or kwargs) and self.query.is_sliced:
raise TypeError('Cannot filter a query once a slice has been taken.')
clone = self._chain()
if self._defer_next_filter:
self._defer_next_filter = False
clone._deferred_filter = negate, args, kwargs
else:
clone._filter_or_exclude_inplace(negate, args, kwargs)
return clone
def _filter_or_exclude_inplace(self, negate, args, kwargs):
if negate:
self._query.add_q(~Q(*args, **kwargs))
else:
self._query.add_q(Q(*args, **kwargs))
def complex_filter(self, filter_obj):
"""
Return a new QuerySet instance with filter_obj added to the filters.
filter_obj can be a Q object or a dictionary of keyword lookup
arguments.
This exists to support framework features such as 'limit_choices_to',
and usually it will be more natural to use other methods.
"""
if isinstance(filter_obj, Q):
clone = self._chain()
clone.query.add_q(filter_obj)
return clone
else:
return self._filter_or_exclude(False, args=(), kwargs=filter_obj)
def _combinator_query(self, combinator, *other_qs, all=False):
# Clone the query to inherit the select list and everything
clone = self._chain()
# Clear limits and ordering so they can be reapplied
clone.query.clear_ordering(force=True)
clone.query.clear_limits()
clone.query.combined_queries = (self.query,) + tuple(qs.query for qs in other_qs)
clone.query.combinator = combinator
clone.query.combinator_all = all
return clone
def union(self, *other_qs, all=False):
# If the query is an EmptyQuerySet, combine all nonempty querysets.
if isinstance(self, EmptyQuerySet):
qs = [q for q in other_qs if not isinstance(q, EmptyQuerySet)]
if not qs:
return self
if len(qs) == 1:
return qs[0]
return qs[0]._combinator_query('union', *qs[1:], all=all)
return self._combinator_query('union', *other_qs, all=all)
def intersection(self, *other_qs):
# If any query is an EmptyQuerySet, return it.
if isinstance(self, EmptyQuerySet):
return self
for other in other_qs:
if isinstance(other, EmptyQuerySet):
return other
return self._combinator_query('intersection', *other_qs)
def difference(self, *other_qs):
# If the query is an EmptyQuerySet, return it.
if isinstance(self, EmptyQuerySet):
return self
return self._combinator_query('difference', *other_qs)
def select_for_update(self, nowait=False, skip_locked=False, of=(), no_key=False):
"""
Return a new QuerySet instance that will select objects with a
FOR UPDATE lock.
"""
if nowait and skip_locked:
raise ValueError('The nowait option cannot be used with skip_locked.')
obj = self._chain()
obj._for_write = True
obj.query.select_for_update = True
obj.query.select_for_update_nowait = nowait
obj.query.select_for_update_skip_locked = skip_locked
obj.query.select_for_update_of = of
obj.query.select_for_no_key_update = no_key
return obj
def select_related(self, *fields):
"""
Return a new QuerySet instance that will select related objects.
If fields are specified, they must be ForeignKey fields and only those
related objects are included in the selection.
If select_related(None) is called, clear the list.
"""
self._not_support_combined_queries('select_related')
if self._fields is not None:
raise TypeError("Cannot call select_related() after .values() or .values_list()")
obj = self._chain()
if fields == (None,):
obj.query.select_related = False
elif fields:
obj.query.add_select_related(fields)
else:
obj.query.select_related = True
return obj
def prefetch_related(self, *lookups):
"""
Return a new QuerySet instance that will prefetch the specified
Many-To-One and Many-To-Many related objects when the QuerySet is
evaluated.
When prefetch_related() is called more than once, append to the list of
prefetch lookups. If prefetch_related(None) is called, clear the list.
"""
self._not_support_combined_queries('prefetch_related')
clone = self._chain()
if lookups == (None,):
clone._prefetch_related_lookups = ()
else:
for lookup in lookups:
if isinstance(lookup, Prefetch):
lookup = lookup.prefetch_to
lookup = lookup.split(LOOKUP_SEP, 1)[0]
if lookup in self.query._filtered_relations:
raise ValueError('prefetch_related() is not supported with FilteredRelation.')
clone._prefetch_related_lookups = clone._prefetch_related_lookups + lookups
return clone
def annotate(self, *args, **kwargs):
"""
Return a query set in which the returned objects have been annotated
with extra data or aggregations.
"""
self._not_support_combined_queries('annotate')
return self._annotate(args, kwargs, select=True)
def alias(self, *args, **kwargs):
"""
Return a query set with added aliases for extra data or aggregations.
"""
self._not_support_combined_queries('alias')
return self._annotate(args, kwargs, select=False)
def _annotate(self, args, kwargs, select=True):
self._validate_values_are_expressions(args + tuple(kwargs.values()), method_name='annotate')
annotations = {}
for arg in args:
# The default_alias property may raise a TypeError.
try:
if arg.default_alias in kwargs:
raise ValueError("The named annotation '%s' conflicts with the "
"default name for another annotation."
% arg.default_alias)
except TypeError:
raise TypeError("Complex annotations require an alias")
annotations[arg.default_alias] = arg
annotations.update(kwargs)
clone = self._chain()
names = self._fields
if names is None:
names = set(chain.from_iterable(
(field.name, field.attname) if hasattr(field, 'attname') else (field.name,)
for field in self.model._meta.get_fields()
))
for alias, annotation in annotations.items():
if alias in names:
raise ValueError("The annotation '%s' conflicts with a field on "
"the model." % alias)
if isinstance(annotation, FilteredRelation):
clone.query.add_filtered_relation(annotation, alias)
else:
clone.query.add_annotation(
annotation, alias, is_summary=False, select=select,
)
for alias, annotation in clone.query.annotations.items():
if alias in annotations and annotation.contains_aggregate:
if clone._fields is None:
clone.query.group_by = True
else:
clone.query.set_group_by()
break
return clone
def order_by(self, *field_names):
"""Return a new QuerySet instance with the ordering changed."""
if self.query.is_sliced:
raise TypeError('Cannot reorder a query once a slice has been taken.')
obj = self._chain()
obj.query.clear_ordering(force=True, clear_default=False)
obj.query.add_ordering(*field_names)
return obj
def distinct(self, *field_names):
"""
Return a new QuerySet instance that will select only distinct results.
"""
self._not_support_combined_queries('distinct')
if self.query.is_sliced:
raise TypeError('Cannot create distinct fields once a slice has been taken.')
obj = self._chain()
obj.query.add_distinct_fields(*field_names)
return obj
def extra(self, select=None, where=None, params=None, tables=None,
order_by=None, select_params=None):
"""Add extra SQL fragments to the query."""
self._not_support_combined_queries('extra')
if self.query.is_sliced:
raise TypeError('Cannot change a query once a slice has been taken.')
clone = self._chain()
clone.query.add_extra(select, select_params, where, params, tables, order_by)
return clone
def reverse(self):
"""Reverse the ordering of the QuerySet."""
if self.query.is_sliced:
raise TypeError('Cannot reverse a query once a slice has been taken.')
clone = self._chain()
clone.query.standard_ordering = not clone.query.standard_ordering
return clone
def defer(self, *fields):
"""
Defer the loading of data for certain fields until they are accessed.
Add the set of deferred fields to any existing set of deferred fields.
The only exception to this is if None is passed in as the only
parameter, in which case removal all deferrals.
"""
self._not_support_combined_queries('defer')
if self._fields is not None:
raise TypeError("Cannot call defer() after .values() or .values_list()")
clone = self._chain()
if fields == (None,):
clone.query.clear_deferred_loading()
else:
clone.query.add_deferred_loading(fields)
return clone
def only(self, *fields):
"""
Essentially, the opposite of defer(). Only the fields passed into this
method and that are not already specified as deferred are loaded
immediately when the queryset is evaluated.
"""
self._not_support_combined_queries('only')
if self._fields is not None:
raise TypeError("Cannot call only() after .values() or .values_list()")
if fields == (None,):
# Can only pass None to defer(), not only(), as the rest option.
# That won't stop people trying to do this, so let's be explicit.
raise TypeError("Cannot pass None as an argument to only().")
for field in fields:
field = field.split(LOOKUP_SEP, 1)[0]
if field in self.query._filtered_relations:
raise ValueError('only() is not supported with FilteredRelation.')
clone = self._chain()
clone.query.add_immediate_loading(fields)
return clone
def using(self, alias):
"""Select which database this QuerySet should execute against."""
clone = self._chain()
clone._db = alias
return clone
###################################
# PUBLIC INTROSPECTION ATTRIBUTES #
###################################
@property
def ordered(self):
"""
Return True if the QuerySet is ordered -- i.e. has an order_by()
clause or a default ordering on the model (or is empty).
"""
if isinstance(self, EmptyQuerySet):
return True
if self.query.extra_order_by or self.query.order_by:
return True
elif (
self.query.default_ordering and
self.query.get_meta().ordering and
# A default ordering doesn't affect GROUP BY queries.
not self.query.group_by
):
return True
else:
return False
@property
def db(self):
"""Return the database used if this query is executed now."""
if self._for_write:
return self._db or router.db_for_write(self.model, **self._hints)
return self._db or router.db_for_read(self.model, **self._hints)
###################
# PRIVATE METHODS #
###################
def _insert(self, objs, fields, returning_fields=None, raw=False, using=None, ignore_conflicts=False):
"""
Insert a new record for the given model. This provides an interface to
the InsertQuery class and is how Model.save() is implemented.
"""
self._for_write = True
if using is None:
using = self.db
query = sql.InsertQuery(self.model, ignore_conflicts=ignore_conflicts)
query.insert_values(fields, objs, raw=raw)
return query.get_compiler(using=using).execute_sql(returning_fields)
_insert.alters_data = True
_insert.queryset_only = False
def _batched_insert(self, objs, fields, batch_size, ignore_conflicts=False):
"""
Helper method for bulk_create() to insert objs one batch at a time.
"""
connection = connections[self.db]
if ignore_conflicts and not connection.features.supports_ignore_conflicts:
raise NotSupportedError('This database backend does not support ignoring conflicts.')
ops = connection.ops
max_batch_size = max(ops.bulk_batch_size(fields, objs), 1)
batch_size = min(batch_size, max_batch_size) if batch_size else max_batch_size
inserted_rows = []
bulk_return = connection.features.can_return_rows_from_bulk_insert
for item in [objs[i:i + batch_size] for i in range(0, len(objs), batch_size)]:
if bulk_return and not ignore_conflicts:
inserted_rows.extend(self._insert(
item, fields=fields, using=self.db,
returning_fields=self.model._meta.db_returning_fields,
ignore_conflicts=ignore_conflicts,
))
else:
self._insert(item, fields=fields, using=self.db, ignore_conflicts=ignore_conflicts)
return inserted_rows
def _chain(self):
"""
Return a copy of the current QuerySet that's ready for another
operation.
"""
obj = self._clone()
if obj._sticky_filter:
obj.query.filter_is_sticky = True
obj._sticky_filter = False
return obj
def _clone(self):
"""
Return a copy of the current QuerySet. A lightweight alternative
to deepcopy().
"""
c = self.__class__(model=self.model, query=self.query.chain(), using=self._db, hints=self._hints)
c._sticky_filter = self._sticky_filter
c._for_write = self._for_write
c._prefetch_related_lookups = self._prefetch_related_lookups[:]
c._known_related_objects = self._known_related_objects
c._iterable_class = self._iterable_class
c._fields = self._fields
return c
def _fetch_all(self):
if self._result_cache is None:
self._result_cache = list(self._iterable_class(self))
if self._prefetch_related_lookups and not self._prefetch_done:
self._prefetch_related_objects()
def _next_is_sticky(self):
"""
Indicate that the next filter call and the one following that should
be treated as a single filter. This is only important when it comes to
determining when to reuse tables for many-to-many filters. Required so
that we can filter naturally on the results of related managers.
This doesn't return a clone of the current QuerySet (it returns
"self"). The method is only used internally and should be immediately
followed by a filter() that does create a clone.
"""
self._sticky_filter = True
return self
def _merge_sanity_check(self, other):
"""Check that two QuerySet classes may be merged."""
if self._fields is not None and (
set(self.query.values_select) != set(other.query.values_select) or
set(self.query.extra_select) != set(other.query.extra_select) or
set(self.query.annotation_select) != set(other.query.annotation_select)):
raise TypeError(
"Merging '%s' classes must involve the same values in each case."
% self.__class__.__name__
)
def _merge_known_related_objects(self, other):
"""
Keep track of all known related objects from either QuerySet instance.
"""
for field, objects in other._known_related_objects.items():
self._known_related_objects.setdefault(field, {}).update(objects)
def resolve_expression(self, *args, **kwargs):
if self._fields and len(self._fields) > 1:
# values() queryset can only be used as nested queries
# if they are set up to select only a single field.
raise TypeError('Cannot use multi-field values as a filter value.')
query = self.query.resolve_expression(*args, **kwargs)
query._db = self._db
return query
resolve_expression.queryset_only = True
def _add_hints(self, **hints):
"""
Update hinting information for use by routers. Add new key/values or
overwrite existing key/values.
"""
self._hints.update(hints)
def _has_filters(self):
"""
Check if this QuerySet has any filtering going on. This isn't
equivalent with checking if all objects are present in results, for
example, qs[1:]._has_filters() -> False.
"""
return self.query.has_filters()
@staticmethod
def _validate_values_are_expressions(values, method_name):
invalid_args = sorted(str(arg) for arg in values if not hasattr(arg, 'resolve_expression'))
if invalid_args:
raise TypeError(
'QuerySet.%s() received non-expression(s): %s.' % (
method_name,
', '.join(invalid_args),
)
)
def _not_support_combined_queries(self, operation_name):
if self.query.combinator:
raise NotSupportedError(
'Calling QuerySet.%s() after %s() is not supported.'
% (operation_name, self.query.combinator)
)
def _check_operator_queryset(self, other, operator_):
if self.query.combinator or other.query.combinator:
raise TypeError(f'Cannot use {operator_} operator with combined queryset.')
class InstanceCheckMeta(type):
def __instancecheck__(self, instance):
return isinstance(instance, QuerySet) and instance.query.is_empty()
class EmptyQuerySet(metaclass=InstanceCheckMeta):
"""
Marker class to checking if a queryset is empty by .none():
isinstance(qs.none(), EmptyQuerySet) -> True
"""
def __init__(self, *args, **kwargs):
raise TypeError("EmptyQuerySet can't be instantiated")
class RawQuerySet:
"""
Provide an iterator which converts the results of raw SQL queries into
annotated model instances.
"""
def __init__(self, raw_query, model=None, query=None, params=(),
translations=None, using=None, hints=None):
self.raw_query = raw_query
self.model = model
self._db = using
self._hints = hints or {}
self.query = query or sql.RawQuery(sql=raw_query, using=self.db, params=params)
self.params = params
self.translations = translations or {}
self._result_cache = None
self._prefetch_related_lookups = ()
self._prefetch_done = False
def resolve_model_init_order(self):
"""Resolve the init field names and value positions."""
converter = connections[self.db].introspection.identifier_converter
model_init_fields = [f for f in self.model._meta.fields if converter(f.column) in self.columns]
annotation_fields = [(column, pos) for pos, column in enumerate(self.columns)
if column not in self.model_fields]
model_init_order = [self.columns.index(converter(f.column)) for f in model_init_fields]
model_init_names = [f.attname for f in model_init_fields]
return model_init_names, model_init_order, annotation_fields
def prefetch_related(self, *lookups):
"""Same as QuerySet.prefetch_related()"""
clone = self._clone()
if lookups == (None,):
clone._prefetch_related_lookups = ()
else:
clone._prefetch_related_lookups = clone._prefetch_related_lookups + lookups
return clone
def _prefetch_related_objects(self):
prefetch_related_objects(self._result_cache, *self._prefetch_related_lookups)
self._prefetch_done = True
def _clone(self):
"""Same as QuerySet._clone()"""
c = self.__class__(
self.raw_query, model=self.model, query=self.query, params=self.params,
translations=self.translations, using=self._db, hints=self._hints
)
c._prefetch_related_lookups = self._prefetch_related_lookups[:]
return c
def _fetch_all(self):
if self._result_cache is None:
self._result_cache = list(self.iterator())
if self._prefetch_related_lookups and not self._prefetch_done:
self._prefetch_related_objects()
def __len__(self):
self._fetch_all()
return len(self._result_cache)
def __bool__(self):
self._fetch_all()
return bool(self._result_cache)
def __iter__(self):
self._fetch_all()
return iter(self._result_cache)
def iterator(self):
# Cache some things for performance reasons outside the loop.
db = self.db
connection = connections[db]
compiler = connection.ops.compiler('SQLCompiler')(self.query, connection, db)
query = iter(self.query)
try:
model_init_names, model_init_pos, annotation_fields = self.resolve_model_init_order()
if self.model._meta.pk.attname not in model_init_names:
raise exceptions.FieldDoesNotExist(
'Raw query must include the primary key'
)
model_cls = self.model
fields = [self.model_fields.get(c) for c in self.columns]
converters = compiler.get_converters([
f.get_col(f.model._meta.db_table) if f else None for f in fields
])
if converters:
query = compiler.apply_converters(query, converters)
for values in query:
# Associate fields to values
model_init_values = [values[pos] for pos in model_init_pos]
instance = model_cls.from_db(db, model_init_names, model_init_values)
if annotation_fields:
for column, pos in annotation_fields:
setattr(instance, column, values[pos])
yield instance
finally:
# Done iterating the Query. If it has its own cursor, close it.
if hasattr(self.query, 'cursor') and self.query.cursor:
self.query.cursor.close()
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self.query)
def __getitem__(self, k):
return list(self)[k]
@property
def db(self):
"""Return the database used if this query is executed now."""
return self._db or router.db_for_read(self.model, **self._hints)
def using(self, alias):
"""Select the database this RawQuerySet should execute against."""
return RawQuerySet(
self.raw_query, model=self.model,
query=self.query.chain(using=alias),
params=self.params, translations=self.translations,
using=alias,
)
@cached_property
def columns(self):
"""
A list of model field names in the order they'll appear in the
query results.
"""
columns = self.query.get_columns()
# Adjust any column names which don't match field names
for (query_name, model_name) in self.translations.items():
# Ignore translations for nonexistent column names
try:
index = columns.index(query_name)
except ValueError:
pass
else:
columns[index] = model_name
return columns
@cached_property
def model_fields(self):
"""A dict mapping column names to model field names."""
converter = connections[self.db].introspection.identifier_converter
model_fields = {}
for field in self.model._meta.fields:
name, column = field.get_attname_column()
model_fields[converter(column)] = field
return model_fields
class Prefetch:
def __init__(self, lookup, queryset=None, to_attr=None):
# `prefetch_through` is the path we traverse to perform the prefetch.
self.prefetch_through = lookup
# `prefetch_to` is the path to the attribute that stores the result.
self.prefetch_to = lookup
if queryset is not None and (
isinstance(queryset, RawQuerySet) or (
hasattr(queryset, '_iterable_class') and
not issubclass(queryset._iterable_class, ModelIterable)
)
):
raise ValueError(
'Prefetch querysets cannot use raw(), values(), and '
'values_list().'
)
if to_attr:
self.prefetch_to = LOOKUP_SEP.join(lookup.split(LOOKUP_SEP)[:-1] + [to_attr])
self.queryset = queryset
self.to_attr = to_attr
def __getstate__(self):
obj_dict = self.__dict__.copy()
if self.queryset is not None:
queryset = self.queryset._chain()
# Prevent the QuerySet from being evaluated
queryset._result_cache = []
queryset._prefetch_done = True
obj_dict['queryset'] = queryset
return obj_dict
def add_prefix(self, prefix):
self.prefetch_through = prefix + LOOKUP_SEP + self.prefetch_through
self.prefetch_to = prefix + LOOKUP_SEP + self.prefetch_to
def get_current_prefetch_to(self, level):
return LOOKUP_SEP.join(self.prefetch_to.split(LOOKUP_SEP)[:level + 1])
def get_current_to_attr(self, level):
parts = self.prefetch_to.split(LOOKUP_SEP)
to_attr = parts[level]
as_attr = self.to_attr and level == len(parts) - 1
return to_attr, as_attr
def get_current_queryset(self, level):
if self.get_current_prefetch_to(level) == self.prefetch_to:
return self.queryset
return None
def __eq__(self, other):
if not isinstance(other, Prefetch):
return NotImplemented
return self.prefetch_to == other.prefetch_to
def __hash__(self):
return hash((self.__class__, self.prefetch_to))
def normalize_prefetch_lookups(lookups, prefix=None):
"""Normalize lookups into Prefetch objects."""
ret = []
for lookup in lookups:
if not isinstance(lookup, Prefetch):
lookup = Prefetch(lookup)
if prefix:
lookup.add_prefix(prefix)
ret.append(lookup)
return ret
def prefetch_related_objects(model_instances, *related_lookups):
"""
Populate prefetched object caches for a list of model instances based on
the lookups/Prefetch instances given.
"""
if not model_instances:
return # nothing to do
# We need to be able to dynamically add to the list of prefetch_related
# lookups that we look up (see below). So we need some book keeping to
# ensure we don't do duplicate work.
done_queries = {} # dictionary of things like 'foo__bar': [results]
auto_lookups = set() # we add to this as we go through.
followed_descriptors = set() # recursion protection
all_lookups = normalize_prefetch_lookups(reversed(related_lookups))
while all_lookups:
lookup = all_lookups.pop()
if lookup.prefetch_to in done_queries:
if lookup.queryset is not None:
raise ValueError("'%s' lookup was already seen with a different queryset. "
"You may need to adjust the ordering of your lookups." % lookup.prefetch_to)
continue
# Top level, the list of objects to decorate is the result cache
# from the primary QuerySet. It won't be for deeper levels.
obj_list = model_instances
through_attrs = lookup.prefetch_through.split(LOOKUP_SEP)
for level, through_attr in enumerate(through_attrs):
# Prepare main instances
if not obj_list:
break
prefetch_to = lookup.get_current_prefetch_to(level)
if prefetch_to in done_queries:
# Skip any prefetching, and any object preparation
obj_list = done_queries[prefetch_to]
continue
# Prepare objects:
good_objects = True
for obj in obj_list:
# Since prefetching can re-use instances, it is possible to have
# the same instance multiple times in obj_list, so obj might
# already be prepared.
if not hasattr(obj, '_prefetched_objects_cache'):
try:
obj._prefetched_objects_cache = {}
except (AttributeError, TypeError):
# Must be an immutable object from
# values_list(flat=True), for example (TypeError) or
# a QuerySet subclass that isn't returning Model
# instances (AttributeError), either in Django or a 3rd
# party. prefetch_related() doesn't make sense, so quit.
good_objects = False
break
if not good_objects:
break
# Descend down tree
# We assume that objects retrieved are homogeneous (which is the premise
# of prefetch_related), so what applies to first object applies to all.
first_obj = obj_list[0]
to_attr = lookup.get_current_to_attr(level)[0]
prefetcher, descriptor, attr_found, is_fetched = get_prefetcher(first_obj, through_attr, to_attr)
if not attr_found:
raise AttributeError("Cannot find '%s' on %s object, '%s' is an invalid "
"parameter to prefetch_related()" %
(through_attr, first_obj.__class__.__name__, lookup.prefetch_through))
if level == len(through_attrs) - 1 and prefetcher is None:
# Last one, this *must* resolve to something that supports
# prefetching, otherwise there is no point adding it and the
# developer asking for it has made a mistake.
raise ValueError("'%s' does not resolve to an item that supports "
"prefetching - this is an invalid parameter to "
"prefetch_related()." % lookup.prefetch_through)
obj_to_fetch = None
if prefetcher is not None:
obj_to_fetch = [obj for obj in obj_list if not is_fetched(obj)]
if obj_to_fetch:
obj_list, additional_lookups = prefetch_one_level(
obj_to_fetch,
prefetcher,
lookup,
level,
)
# We need to ensure we don't keep adding lookups from the
# same relationships to stop infinite recursion. So, if we
# are already on an automatically added lookup, don't add
# the new lookups from relationships we've seen already.
if not (prefetch_to in done_queries and lookup in auto_lookups and descriptor in followed_descriptors):
done_queries[prefetch_to] = obj_list
new_lookups = normalize_prefetch_lookups(reversed(additional_lookups), prefetch_to)
auto_lookups.update(new_lookups)
all_lookups.extend(new_lookups)
followed_descriptors.add(descriptor)
else:
# Either a singly related object that has already been fetched
# (e.g. via select_related), or hopefully some other property
# that doesn't support prefetching but needs to be traversed.
# We replace the current list of parent objects with the list
# of related objects, filtering out empty or missing values so
# that we can continue with nullable or reverse relations.
new_obj_list = []
for obj in obj_list:
if through_attr in getattr(obj, '_prefetched_objects_cache', ()):
# If related objects have been prefetched, use the
# cache rather than the object's through_attr.
new_obj = list(obj._prefetched_objects_cache.get(through_attr))
else:
try:
new_obj = getattr(obj, through_attr)
except exceptions.ObjectDoesNotExist:
continue
if new_obj is None:
continue
# We special-case `list` rather than something more generic
# like `Iterable` because we don't want to accidentally match
# user models that define __iter__.
if isinstance(new_obj, list):
new_obj_list.extend(new_obj)
else:
new_obj_list.append(new_obj)
obj_list = new_obj_list
def get_prefetcher(instance, through_attr, to_attr):
"""
For the attribute 'through_attr' on the given instance, find
an object that has a get_prefetch_queryset().
Return a 4 tuple containing:
(the object with get_prefetch_queryset (or None),
the descriptor object representing this relationship (or None),
a boolean that is False if the attribute was not found at all,
a function that takes an instance and returns a boolean that is True if
the attribute has already been fetched for that instance)
"""
def has_to_attr_attribute(instance):
return hasattr(instance, to_attr)
prefetcher = None
is_fetched = has_to_attr_attribute
# For singly related objects, we have to avoid getting the attribute
# from the object, as this will trigger the query. So we first try
# on the class, in order to get the descriptor object.
rel_obj_descriptor = getattr(instance.__class__, through_attr, None)
if rel_obj_descriptor is None:
attr_found = hasattr(instance, through_attr)
else:
attr_found = True
if rel_obj_descriptor:
# singly related object, descriptor object has the
# get_prefetch_queryset() method.
if hasattr(rel_obj_descriptor, 'get_prefetch_queryset'):
prefetcher = rel_obj_descriptor
is_fetched = rel_obj_descriptor.is_cached
else:
# descriptor doesn't support prefetching, so we go ahead and get
# the attribute on the instance rather than the class to
# support many related managers
rel_obj = getattr(instance, through_attr)
if hasattr(rel_obj, 'get_prefetch_queryset'):
prefetcher = rel_obj
if through_attr != to_attr:
# Special case cached_property instances because hasattr
# triggers attribute computation and assignment.
if isinstance(getattr(instance.__class__, to_attr, None), cached_property):
def has_cached_property(instance):
return to_attr in instance.__dict__
is_fetched = has_cached_property
else:
def in_prefetched_cache(instance):
return through_attr in instance._prefetched_objects_cache
is_fetched = in_prefetched_cache
return prefetcher, rel_obj_descriptor, attr_found, is_fetched
def prefetch_one_level(instances, prefetcher, lookup, level):
"""
Helper function for prefetch_related_objects().
Run prefetches on all instances using the prefetcher object,
assigning results to relevant caches in instance.
Return the prefetched objects along with any additional prefetches that
must be done due to prefetch_related lookups found from default managers.
"""
# prefetcher must have a method get_prefetch_queryset() which takes a list
# of instances, and returns a tuple:
# (queryset of instances of self.model that are related to passed in instances,
# callable that gets value to be matched for returned instances,
# callable that gets value to be matched for passed in instances,
# boolean that is True for singly related objects,
# cache or field name to assign to,
# boolean that is True when the previous argument is a cache name vs a field name).
# The 'values to be matched' must be hashable as they will be used
# in a dictionary.
rel_qs, rel_obj_attr, instance_attr, single, cache_name, is_descriptor = (
prefetcher.get_prefetch_queryset(instances, lookup.get_current_queryset(level)))
# We have to handle the possibility that the QuerySet we just got back
# contains some prefetch_related lookups. We don't want to trigger the
# prefetch_related functionality by evaluating the query. Rather, we need
# to merge in the prefetch_related lookups.
# Copy the lookups in case it is a Prefetch object which could be reused
# later (happens in nested prefetch_related).
additional_lookups = [
copy.copy(additional_lookup) for additional_lookup
in getattr(rel_qs, '_prefetch_related_lookups', ())
]
if additional_lookups:
# Don't need to clone because the manager should have given us a fresh
# instance, so we access an internal instead of using public interface
# for performance reasons.
rel_qs._prefetch_related_lookups = ()
all_related_objects = list(rel_qs)
rel_obj_cache = {}
for rel_obj in all_related_objects:
rel_attr_val = rel_obj_attr(rel_obj)
rel_obj_cache.setdefault(rel_attr_val, []).append(rel_obj)
to_attr, as_attr = lookup.get_current_to_attr(level)
# Make sure `to_attr` does not conflict with a field.
if as_attr and instances:
# We assume that objects retrieved are homogeneous (which is the premise
# of prefetch_related), so what applies to first object applies to all.
model = instances[0].__class__
try:
model._meta.get_field(to_attr)
except exceptions.FieldDoesNotExist:
pass
else:
msg = 'to_attr={} conflicts with a field on the {} model.'
raise ValueError(msg.format(to_attr, model.__name__))
# Whether or not we're prefetching the last part of the lookup.
leaf = len(lookup.prefetch_through.split(LOOKUP_SEP)) - 1 == level
for obj in instances:
instance_attr_val = instance_attr(obj)
vals = rel_obj_cache.get(instance_attr_val, [])
if single:
val = vals[0] if vals else None
if as_attr:
# A to_attr has been given for the prefetch.
setattr(obj, to_attr, val)
elif is_descriptor:
# cache_name points to a field name in obj.
# This field is a descriptor for a related object.
setattr(obj, cache_name, val)
else:
# No to_attr has been given for this prefetch operation and the
# cache_name does not point to a descriptor. Store the value of
# the field in the object's field cache.
obj._state.fields_cache[cache_name] = val
else:
if as_attr:
setattr(obj, to_attr, vals)
else:
manager = getattr(obj, to_attr)
if leaf and lookup.queryset is not None:
qs = manager._apply_rel_filters(lookup.queryset)
else:
qs = manager.get_queryset()
qs._result_cache = vals
# We don't want the individual qs doing prefetch_related now,
# since we have merged this into the current work.
qs._prefetch_done = True
obj._prefetched_objects_cache[cache_name] = qs
return all_related_objects, additional_lookups
class RelatedPopulator:
"""
RelatedPopulator is used for select_related() object instantiation.
The idea is that each select_related() model will be populated by a
different RelatedPopulator instance. The RelatedPopulator instances get
klass_info and select (computed in SQLCompiler) plus the used db as
input for initialization. That data is used to compute which columns
to use, how to instantiate the model, and how to populate the links
between the objects.
The actual creation of the objects is done in populate() method. This
method gets row and from_obj as input and populates the select_related()
model instance.
"""
def __init__(self, klass_info, select, db):
self.db = db
# Pre-compute needed attributes. The attributes are:
# - model_cls: the possibly deferred model class to instantiate
# - either:
# - cols_start, cols_end: usually the columns in the row are
# in the same order model_cls.__init__ expects them, so we
# can instantiate by model_cls(*row[cols_start:cols_end])
# - reorder_for_init: When select_related descends to a child
# class, then we want to reuse the already selected parent
# data. However, in this case the parent data isn't necessarily
# in the same order that Model.__init__ expects it to be, so
# we have to reorder the parent data. The reorder_for_init
# attribute contains a function used to reorder the field data
# in the order __init__ expects it.
# - pk_idx: the index of the primary key field in the reordered
# model data. Used to check if a related object exists at all.
# - init_list: the field attnames fetched from the database. For
# deferred models this isn't the same as all attnames of the
# model's fields.
# - related_populators: a list of RelatedPopulator instances if
# select_related() descends to related models from this model.
# - local_setter, remote_setter: Methods to set cached values on
# the object being populated and on the remote object. Usually
# these are Field.set_cached_value() methods.
select_fields = klass_info['select_fields']
from_parent = klass_info['from_parent']
if not from_parent:
self.cols_start = select_fields[0]
self.cols_end = select_fields[-1] + 1
self.init_list = [
f[0].target.attname for f in select[self.cols_start:self.cols_end]
]
self.reorder_for_init = None
else:
attname_indexes = {select[idx][0].target.attname: idx for idx in select_fields}
model_init_attnames = (f.attname for f in klass_info['model']._meta.concrete_fields)
self.init_list = [attname for attname in model_init_attnames if attname in attname_indexes]
self.reorder_for_init = operator.itemgetter(*[attname_indexes[attname] for attname in self.init_list])
self.model_cls = klass_info['model']
self.pk_idx = self.init_list.index(self.model_cls._meta.pk.attname)
self.related_populators = get_related_populators(klass_info, select, self.db)
self.local_setter = klass_info['local_setter']
self.remote_setter = klass_info['remote_setter']
def populate(self, row, from_obj):
if self.reorder_for_init:
obj_data = self.reorder_for_init(row)
else:
obj_data = row[self.cols_start:self.cols_end]
if obj_data[self.pk_idx] is None:
obj = None
else:
obj = self.model_cls.from_db(self.db, self.init_list, obj_data)
for rel_iter in self.related_populators:
rel_iter.populate(row, obj)
self.local_setter(from_obj, obj)
if obj is not None:
self.remote_setter(obj, from_obj)
def get_related_populators(klass_info, select, db):
iterators = []
related_klass_infos = klass_info.get('related_klass_infos', [])
for rel_klass_info in related_klass_infos:
rel_cls = RelatedPopulator(rel_klass_info, select, db)
iterators.append(rel_cls)
return iterators
|
7b5f255c9f684b4e83b310fea3bccbe60fa2fc743e46f5c188bf0432d6daf7b2 | import copy
import inspect
import warnings
from functools import partialmethod
from itertools import chain
import django
from django.apps import apps
from django.conf import settings
from django.core import checks
from django.core.exceptions import (
NON_FIELD_ERRORS, FieldDoesNotExist, FieldError, MultipleObjectsReturned,
ObjectDoesNotExist, ValidationError,
)
from django.db import (
DEFAULT_DB_ALIAS, DJANGO_VERSION_PICKLE_KEY, DatabaseError, connection,
connections, router, transaction,
)
from django.db.models import (
NOT_PROVIDED, ExpressionWrapper, IntegerField, Max, Value,
)
from django.db.models.constants import LOOKUP_SEP
from django.db.models.constraints import CheckConstraint, UniqueConstraint
from django.db.models.deletion import CASCADE, Collector
from django.db.models.fields.related import (
ForeignObjectRel, OneToOneField, lazy_related_operation, resolve_relation,
)
from django.db.models.functions import Coalesce
from django.db.models.manager import Manager
from django.db.models.options import Options
from django.db.models.query import F, Q
from django.db.models.signals import (
class_prepared, post_init, post_save, pre_init, pre_save,
)
from django.db.models.utils import make_model_tuple
from django.utils.encoding import force_str
from django.utils.hashable import make_hashable
from django.utils.text import capfirst, get_text_list
from django.utils.translation import gettext_lazy as _
class Deferred:
def __repr__(self):
return '<Deferred field>'
def __str__(self):
return '<Deferred field>'
DEFERRED = Deferred()
def subclass_exception(name, bases, module, attached_to):
"""
Create exception subclass. Used by ModelBase below.
The exception is created in a way that allows it to be pickled, assuming
that the returned exception class will be added as an attribute to the
'attached_to' class.
"""
return type(name, bases, {
'__module__': module,
'__qualname__': '%s.%s' % (attached_to.__qualname__, name),
})
def _has_contribute_to_class(value):
# Only call contribute_to_class() if it's bound.
return not inspect.isclass(value) and hasattr(value, 'contribute_to_class')
class ModelBase(type):
"""Metaclass for all models."""
def __new__(cls, name, bases, attrs, **kwargs):
super_new = super().__new__
# Also ensure initialization is only performed for subclasses of Model
# (excluding Model class itself).
parents = [b for b in bases if isinstance(b, ModelBase)]
if not parents:
return super_new(cls, name, bases, attrs)
# Create the class.
module = attrs.pop('__module__')
new_attrs = {'__module__': module}
classcell = attrs.pop('__classcell__', None)
if classcell is not None:
new_attrs['__classcell__'] = classcell
attr_meta = attrs.pop('Meta', None)
# Pass all attrs without a (Django-specific) contribute_to_class()
# method to type.__new__() so that they're properly initialized
# (i.e. __set_name__()).
contributable_attrs = {}
for obj_name, obj in attrs.items():
if _has_contribute_to_class(obj):
contributable_attrs[obj_name] = obj
else:
new_attrs[obj_name] = obj
new_class = super_new(cls, name, bases, new_attrs, **kwargs)
abstract = getattr(attr_meta, 'abstract', False)
meta = attr_meta or getattr(new_class, 'Meta', None)
base_meta = getattr(new_class, '_meta', None)
app_label = None
# Look for an application configuration to attach the model to.
app_config = apps.get_containing_app_config(module)
if getattr(meta, 'app_label', None) is None:
if app_config is None:
if not abstract:
raise RuntimeError(
"Model class %s.%s doesn't declare an explicit "
"app_label and isn't in an application in "
"INSTALLED_APPS." % (module, name)
)
else:
app_label = app_config.label
new_class.add_to_class('_meta', Options(meta, app_label))
if not abstract:
new_class.add_to_class(
'DoesNotExist',
subclass_exception(
'DoesNotExist',
tuple(
x.DoesNotExist for x in parents if hasattr(x, '_meta') and not x._meta.abstract
) or (ObjectDoesNotExist,),
module,
attached_to=new_class))
new_class.add_to_class(
'MultipleObjectsReturned',
subclass_exception(
'MultipleObjectsReturned',
tuple(
x.MultipleObjectsReturned for x in parents if hasattr(x, '_meta') and not x._meta.abstract
) or (MultipleObjectsReturned,),
module,
attached_to=new_class))
if base_meta and not base_meta.abstract:
# Non-abstract child classes inherit some attributes from their
# non-abstract parent (unless an ABC comes before it in the
# method resolution order).
if not hasattr(meta, 'ordering'):
new_class._meta.ordering = base_meta.ordering
if not hasattr(meta, 'get_latest_by'):
new_class._meta.get_latest_by = base_meta.get_latest_by
is_proxy = new_class._meta.proxy
# If the model is a proxy, ensure that the base class
# hasn't been swapped out.
if is_proxy and base_meta and base_meta.swapped:
raise TypeError("%s cannot proxy the swapped model '%s'." % (name, base_meta.swapped))
# Add remaining attributes (those with a contribute_to_class() method)
# to the class.
for obj_name, obj in contributable_attrs.items():
new_class.add_to_class(obj_name, obj)
# All the fields of any type declared on this model
new_fields = chain(
new_class._meta.local_fields,
new_class._meta.local_many_to_many,
new_class._meta.private_fields
)
field_names = {f.name for f in new_fields}
# Basic setup for proxy models.
if is_proxy:
base = None
for parent in [kls for kls in parents if hasattr(kls, '_meta')]:
if parent._meta.abstract:
if parent._meta.fields:
raise TypeError(
"Abstract base class containing model fields not "
"permitted for proxy model '%s'." % name
)
else:
continue
if base is None:
base = parent
elif parent._meta.concrete_model is not base._meta.concrete_model:
raise TypeError("Proxy model '%s' has more than one non-abstract model base class." % name)
if base is None:
raise TypeError("Proxy model '%s' has no non-abstract model base class." % name)
new_class._meta.setup_proxy(base)
new_class._meta.concrete_model = base._meta.concrete_model
else:
new_class._meta.concrete_model = new_class
# Collect the parent links for multi-table inheritance.
parent_links = {}
for base in reversed([new_class] + parents):
# Conceptually equivalent to `if base is Model`.
if not hasattr(base, '_meta'):
continue
# Skip concrete parent classes.
if base != new_class and not base._meta.abstract:
continue
# Locate OneToOneField instances.
for field in base._meta.local_fields:
if isinstance(field, OneToOneField) and field.remote_field.parent_link:
related = resolve_relation(new_class, field.remote_field.model)
parent_links[make_model_tuple(related)] = field
# Track fields inherited from base models.
inherited_attributes = set()
# Do the appropriate setup for any model parents.
for base in new_class.mro():
if base not in parents or not hasattr(base, '_meta'):
# Things without _meta aren't functional models, so they're
# uninteresting parents.
inherited_attributes.update(base.__dict__)
continue
parent_fields = base._meta.local_fields + base._meta.local_many_to_many
if not base._meta.abstract:
# Check for clashes between locally declared fields and those
# on the base classes.
for field in parent_fields:
if field.name in field_names:
raise FieldError(
'Local field %r in class %r clashes with field of '
'the same name from base class %r.' % (
field.name,
name,
base.__name__,
)
)
else:
inherited_attributes.add(field.name)
# Concrete classes...
base = base._meta.concrete_model
base_key = make_model_tuple(base)
if base_key in parent_links:
field = parent_links[base_key]
elif not is_proxy:
attr_name = '%s_ptr' % base._meta.model_name
field = OneToOneField(
base,
on_delete=CASCADE,
name=attr_name,
auto_created=True,
parent_link=True,
)
if attr_name in field_names:
raise FieldError(
"Auto-generated field '%s' in class %r for "
"parent_link to base class %r clashes with "
"declared field of the same name." % (
attr_name,
name,
base.__name__,
)
)
# Only add the ptr field if it's not already present;
# e.g. migrations will already have it specified
if not hasattr(new_class, attr_name):
new_class.add_to_class(attr_name, field)
else:
field = None
new_class._meta.parents[base] = field
else:
base_parents = base._meta.parents.copy()
# Add fields from abstract base class if it wasn't overridden.
for field in parent_fields:
if (field.name not in field_names and
field.name not in new_class.__dict__ and
field.name not in inherited_attributes):
new_field = copy.deepcopy(field)
new_class.add_to_class(field.name, new_field)
# Replace parent links defined on this base by the new
# field. It will be appropriately resolved if required.
if field.one_to_one:
for parent, parent_link in base_parents.items():
if field == parent_link:
base_parents[parent] = new_field
# Pass any non-abstract parent classes onto child.
new_class._meta.parents.update(base_parents)
# Inherit private fields (like GenericForeignKey) from the parent
# class
for field in base._meta.private_fields:
if field.name in field_names:
if not base._meta.abstract:
raise FieldError(
'Local field %r in class %r clashes with field of '
'the same name from base class %r.' % (
field.name,
name,
base.__name__,
)
)
else:
field = copy.deepcopy(field)
if not base._meta.abstract:
field.mti_inherited = True
new_class.add_to_class(field.name, field)
# Copy indexes so that index names are unique when models extend an
# abstract model.
new_class._meta.indexes = [copy.deepcopy(idx) for idx in new_class._meta.indexes]
if abstract:
# Abstract base models can't be instantiated and don't appear in
# the list of models for an app. We do the final setup for them a
# little differently from normal models.
attr_meta.abstract = False
new_class.Meta = attr_meta
return new_class
new_class._prepare()
new_class._meta.apps.register_model(new_class._meta.app_label, new_class)
return new_class
def add_to_class(cls, name, value):
if _has_contribute_to_class(value):
value.contribute_to_class(cls, name)
else:
setattr(cls, name, value)
def _prepare(cls):
"""Create some methods once self._meta has been populated."""
opts = cls._meta
opts._prepare(cls)
if opts.order_with_respect_to:
cls.get_next_in_order = partialmethod(cls._get_next_or_previous_in_order, is_next=True)
cls.get_previous_in_order = partialmethod(cls._get_next_or_previous_in_order, is_next=False)
# Defer creating accessors on the foreign class until it has been
# created and registered. If remote_field is None, we're ordering
# with respect to a GenericForeignKey and don't know what the
# foreign class is - we'll add those accessors later in
# contribute_to_class().
if opts.order_with_respect_to.remote_field:
wrt = opts.order_with_respect_to
remote = wrt.remote_field.model
lazy_related_operation(make_foreign_order_accessors, cls, remote)
# Give the class a docstring -- its definition.
if cls.__doc__ is None:
cls.__doc__ = "%s(%s)" % (cls.__name__, ", ".join(f.name for f in opts.fields))
get_absolute_url_override = settings.ABSOLUTE_URL_OVERRIDES.get(opts.label_lower)
if get_absolute_url_override:
setattr(cls, 'get_absolute_url', get_absolute_url_override)
if not opts.managers:
if any(f.name == 'objects' for f in opts.fields):
raise ValueError(
"Model %s must specify a custom Manager, because it has a "
"field named 'objects'." % cls.__name__
)
manager = Manager()
manager.auto_created = True
cls.add_to_class('objects', manager)
# Set the name of _meta.indexes. This can't be done in
# Options.contribute_to_class() because fields haven't been added to
# the model at that point.
for index in cls._meta.indexes:
if not index.name:
index.set_name_with_model(cls)
class_prepared.send(sender=cls)
@property
def _base_manager(cls):
return cls._meta.base_manager
@property
def _default_manager(cls):
return cls._meta.default_manager
class ModelStateCacheDescriptor:
"""
Upon first access, replace itself with an empty dictionary on the instance.
"""
def __set_name__(self, owner, name):
self.attribute_name = name
def __get__(self, instance, cls=None):
if instance is None:
return self
res = instance.__dict__[self.attribute_name] = {}
return res
class ModelState:
"""Store model instance state."""
db = None
# If true, uniqueness validation checks will consider this a new, unsaved
# object. Necessary for correct validation of new instances of objects with
# explicit (non-auto) PKs. This impacts validation only; it has no effect
# on the actual save.
adding = True
fields_cache = ModelStateCacheDescriptor()
related_managers_cache = ModelStateCacheDescriptor()
def __getstate__(self):
state = self.__dict__.copy()
if 'fields_cache' in state:
state['fields_cache'] = self.fields_cache.copy()
# Manager instances stored in related_managers_cache won't necessarily
# be deserializable if they were dynamically created via an inner
# scope, e.g. create_forward_many_to_many_manager() and
# create_generic_related_manager().
if 'related_managers_cache' in state:
state['related_managers_cache'] = {}
return state
class Model(metaclass=ModelBase):
def __init__(self, *args, **kwargs):
# Alias some things as locals to avoid repeat global lookups
cls = self.__class__
opts = self._meta
_setattr = setattr
_DEFERRED = DEFERRED
if opts.abstract:
raise TypeError('Abstract models cannot be instantiated.')
pre_init.send(sender=cls, args=args, kwargs=kwargs)
# Set up the storage for instance state
self._state = ModelState()
# There is a rather weird disparity here; if kwargs, it's set, then args
# overrides it. It should be one or the other; don't duplicate the work
# The reason for the kwargs check is that standard iterator passes in by
# args, and instantiation for iteration is 33% faster.
if len(args) > len(opts.concrete_fields):
# Daft, but matches old exception sans the err msg.
raise IndexError("Number of args exceeds number of fields")
if not kwargs:
fields_iter = iter(opts.concrete_fields)
# The ordering of the zip calls matter - zip throws StopIteration
# when an iter throws it. So if the first iter throws it, the second
# is *not* consumed. We rely on this, so don't change the order
# without changing the logic.
for val, field in zip(args, fields_iter):
if val is _DEFERRED:
continue
_setattr(self, field.attname, val)
else:
# Slower, kwargs-ready version.
fields_iter = iter(opts.fields)
for val, field in zip(args, fields_iter):
if val is _DEFERRED:
continue
_setattr(self, field.attname, val)
if kwargs.pop(field.name, NOT_PROVIDED) is not NOT_PROVIDED:
raise TypeError(
f"{cls.__qualname__}() got both positional and "
f"keyword arguments for field '{field.name}'."
)
# Now we're left with the unprocessed fields that *must* come from
# keywords, or default.
for field in fields_iter:
is_related_object = False
# Virtual field
if field.attname not in kwargs and field.column is None:
continue
if kwargs:
if isinstance(field.remote_field, ForeignObjectRel):
try:
# Assume object instance was passed in.
rel_obj = kwargs.pop(field.name)
is_related_object = True
except KeyError:
try:
# Object instance wasn't passed in -- must be an ID.
val = kwargs.pop(field.attname)
except KeyError:
val = field.get_default()
else:
try:
val = kwargs.pop(field.attname)
except KeyError:
# This is done with an exception rather than the
# default argument on pop because we don't want
# get_default() to be evaluated, and then not used.
# Refs #12057.
val = field.get_default()
else:
val = field.get_default()
if is_related_object:
# If we are passed a related instance, set it using the
# field.name instead of field.attname (e.g. "user" instead of
# "user_id") so that the object gets properly cached (and type
# checked) by the RelatedObjectDescriptor.
if rel_obj is not _DEFERRED:
_setattr(self, field.name, rel_obj)
else:
if val is not _DEFERRED:
_setattr(self, field.attname, val)
if kwargs:
property_names = opts._property_names
for prop in tuple(kwargs):
try:
# Any remaining kwargs must correspond to properties or
# virtual fields.
if prop in property_names or opts.get_field(prop):
if kwargs[prop] is not _DEFERRED:
_setattr(self, prop, kwargs[prop])
del kwargs[prop]
except (AttributeError, FieldDoesNotExist):
pass
for kwarg in kwargs:
raise TypeError("%s() got an unexpected keyword argument '%s'" % (cls.__name__, kwarg))
super().__init__()
post_init.send(sender=cls, instance=self)
@classmethod
def from_db(cls, db, field_names, values):
if len(values) != len(cls._meta.concrete_fields):
values_iter = iter(values)
values = [
next(values_iter) if f.attname in field_names else DEFERRED
for f in cls._meta.concrete_fields
]
new = cls(*values)
new._state.adding = False
new._state.db = db
return new
def __repr__(self):
return '<%s: %s>' % (self.__class__.__name__, self)
def __str__(self):
return '%s object (%s)' % (self.__class__.__name__, self.pk)
def __eq__(self, other):
if not isinstance(other, Model):
return NotImplemented
if self._meta.concrete_model != other._meta.concrete_model:
return False
my_pk = self.pk
if my_pk is None:
return self is other
return my_pk == other.pk
def __hash__(self):
if self.pk is None:
raise TypeError("Model instances without primary key value are unhashable")
return hash(self.pk)
def __reduce__(self):
data = self.__getstate__()
data[DJANGO_VERSION_PICKLE_KEY] = django.__version__
class_id = self._meta.app_label, self._meta.object_name
return model_unpickle, (class_id,), data
def __getstate__(self):
"""Hook to allow choosing the attributes to pickle."""
state = self.__dict__.copy()
state['_state'] = copy.copy(state['_state'])
# memoryview cannot be pickled, so cast it to bytes and store
# separately.
_memoryview_attrs = []
for attr, value in state.items():
if isinstance(value, memoryview):
_memoryview_attrs.append((attr, bytes(value)))
if _memoryview_attrs:
state['_memoryview_attrs'] = _memoryview_attrs
for attr, value in _memoryview_attrs:
state.pop(attr)
return state
def __setstate__(self, state):
pickled_version = state.get(DJANGO_VERSION_PICKLE_KEY)
if pickled_version:
if pickled_version != django.__version__:
warnings.warn(
"Pickled model instance's Django version %s does not "
"match the current version %s."
% (pickled_version, django.__version__),
RuntimeWarning,
stacklevel=2,
)
else:
warnings.warn(
"Pickled model instance's Django version is not specified.",
RuntimeWarning,
stacklevel=2,
)
if '_memoryview_attrs' in state:
for attr, value in state.pop('_memoryview_attrs'):
state[attr] = memoryview(value)
self.__dict__.update(state)
def _get_pk_val(self, meta=None):
meta = meta or self._meta
return getattr(self, meta.pk.attname)
def _set_pk_val(self, value):
for parent_link in self._meta.parents.values():
if parent_link and parent_link != self._meta.pk:
setattr(self, parent_link.target_field.attname, value)
return setattr(self, self._meta.pk.attname, value)
pk = property(_get_pk_val, _set_pk_val)
def get_deferred_fields(self):
"""
Return a set containing names of deferred fields for this instance.
"""
return {
f.attname for f in self._meta.concrete_fields
if f.attname not in self.__dict__
}
def refresh_from_db(self, using=None, fields=None):
"""
Reload field values from the database.
By default, the reloading happens from the database this instance was
loaded from, or by the read router if this instance wasn't loaded from
any database. The using parameter will override the default.
Fields can be used to specify which fields to reload. The fields
should be an iterable of field attnames. If fields is None, then
all non-deferred fields are reloaded.
When accessing deferred fields of an instance, the deferred loading
of the field will call this method.
"""
if fields is None:
self._prefetched_objects_cache = {}
else:
prefetched_objects_cache = getattr(self, '_prefetched_objects_cache', ())
for field in fields:
if field in prefetched_objects_cache:
del prefetched_objects_cache[field]
fields.remove(field)
if not fields:
return
if any(LOOKUP_SEP in f for f in fields):
raise ValueError(
'Found "%s" in fields argument. Relations and transforms '
'are not allowed in fields.' % LOOKUP_SEP)
hints = {'instance': self}
db_instance_qs = self.__class__._base_manager.db_manager(using, hints=hints).filter(pk=self.pk)
# Use provided fields, if not set then reload all non-deferred fields.
deferred_fields = self.get_deferred_fields()
if fields is not None:
fields = list(fields)
db_instance_qs = db_instance_qs.only(*fields)
elif deferred_fields:
fields = [f.attname for f in self._meta.concrete_fields
if f.attname not in deferred_fields]
db_instance_qs = db_instance_qs.only(*fields)
db_instance = db_instance_qs.get()
non_loaded_fields = db_instance.get_deferred_fields()
for field in self._meta.concrete_fields:
if field.attname in non_loaded_fields:
# This field wasn't refreshed - skip ahead.
continue
setattr(self, field.attname, getattr(db_instance, field.attname))
# Clear cached foreign keys.
if field.is_relation and field.is_cached(self):
field.delete_cached_value(self)
# Clear cached relations.
for field in self._meta.related_objects:
if field.is_cached(self):
field.delete_cached_value(self)
self._state.db = db_instance._state.db
def serializable_value(self, field_name):
"""
Return the value of the field name for this instance. If the field is
a foreign key, return the id value instead of the object. If there's
no Field object with this name on the model, return the model
attribute's value.
Used to serialize a field's value (in the serializer, or form output,
for example). Normally, you would just access the attribute directly
and not use this method.
"""
try:
field = self._meta.get_field(field_name)
except FieldDoesNotExist:
return getattr(self, field_name)
return getattr(self, field.attname)
def save(self, force_insert=False, force_update=False, using=None,
update_fields=None):
"""
Save the current instance. Override this in a subclass if you want to
control the saving process.
The 'force_insert' and 'force_update' parameters can be used to insist
that the "save" must be an SQL insert or update (or equivalent for
non-SQL backends), respectively. Normally, they should not be set.
"""
self._prepare_related_fields_for_save(operation_name='save')
using = using or router.db_for_write(self.__class__, instance=self)
if force_insert and (force_update or update_fields):
raise ValueError("Cannot force both insert and updating in model saving.")
deferred_fields = self.get_deferred_fields()
if update_fields is not None:
# If update_fields is empty, skip the save. We do also check for
# no-op saves later on for inheritance cases. This bailout is
# still needed for skipping signal sending.
if not update_fields:
return
update_fields = frozenset(update_fields)
field_names = set()
for field in self._meta.concrete_fields:
if not field.primary_key:
field_names.add(field.name)
if field.name != field.attname:
field_names.add(field.attname)
non_model_fields = update_fields.difference(field_names)
if non_model_fields:
raise ValueError(
'The following fields do not exist in this model, are m2m '
'fields, or are non-concrete fields: %s'
% ', '.join(non_model_fields)
)
# If saving to the same database, and this model is deferred, then
# automatically do an "update_fields" save on the loaded fields.
elif not force_insert and deferred_fields and using == self._state.db:
field_names = set()
for field in self._meta.concrete_fields:
if not field.primary_key and not hasattr(field, 'through'):
field_names.add(field.attname)
loaded_fields = field_names.difference(deferred_fields)
if loaded_fields:
update_fields = frozenset(loaded_fields)
self.save_base(using=using, force_insert=force_insert,
force_update=force_update, update_fields=update_fields)
save.alters_data = True
def save_base(self, raw=False, force_insert=False,
force_update=False, using=None, update_fields=None):
"""
Handle the parts of saving which should be done only once per save,
yet need to be done in raw saves, too. This includes some sanity
checks and signal sending.
The 'raw' argument is telling save_base not to save any parent
models and not to do any changes to the values before save. This
is used by fixture loading.
"""
using = using or router.db_for_write(self.__class__, instance=self)
assert not (force_insert and (force_update or update_fields))
assert update_fields is None or update_fields
cls = origin = self.__class__
# Skip proxies, but keep the origin as the proxy model.
if cls._meta.proxy:
cls = cls._meta.concrete_model
meta = cls._meta
if not meta.auto_created:
pre_save.send(
sender=origin, instance=self, raw=raw, using=using,
update_fields=update_fields,
)
# A transaction isn't needed if one query is issued.
if meta.parents:
context_manager = transaction.atomic(using=using, savepoint=False)
else:
context_manager = transaction.mark_for_rollback_on_error(using=using)
with context_manager:
parent_inserted = False
if not raw:
parent_inserted = self._save_parents(cls, using, update_fields)
updated = self._save_table(
raw, cls, force_insert or parent_inserted,
force_update, using, update_fields,
)
# Store the database on which the object was saved
self._state.db = using
# Once saved, this is no longer a to-be-added instance.
self._state.adding = False
# Signal that the save is complete
if not meta.auto_created:
post_save.send(
sender=origin, instance=self, created=(not updated),
update_fields=update_fields, raw=raw, using=using,
)
save_base.alters_data = True
def _save_parents(self, cls, using, update_fields):
"""Save all the parents of cls using values from self."""
meta = cls._meta
inserted = False
for parent, field in meta.parents.items():
# Make sure the link fields are synced between parent and self.
if (field and getattr(self, parent._meta.pk.attname) is None and
getattr(self, field.attname) is not None):
setattr(self, parent._meta.pk.attname, getattr(self, field.attname))
parent_inserted = self._save_parents(cls=parent, using=using, update_fields=update_fields)
updated = self._save_table(
cls=parent, using=using, update_fields=update_fields,
force_insert=parent_inserted,
)
if not updated:
inserted = True
# Set the parent's PK value to self.
if field:
setattr(self, field.attname, self._get_pk_val(parent._meta))
# Since we didn't have an instance of the parent handy set
# attname directly, bypassing the descriptor. Invalidate
# the related object cache, in case it's been accidentally
# populated. A fresh instance will be re-built from the
# database if necessary.
if field.is_cached(self):
field.delete_cached_value(self)
return inserted
def _save_table(self, raw=False, cls=None, force_insert=False,
force_update=False, using=None, update_fields=None):
"""
Do the heavy-lifting involved in saving. Update or insert the data
for a single table.
"""
meta = cls._meta
non_pks = [f for f in meta.local_concrete_fields if not f.primary_key]
if update_fields:
non_pks = [f for f in non_pks
if f.name in update_fields or f.attname in update_fields]
pk_val = self._get_pk_val(meta)
if pk_val is None:
pk_val = meta.pk.get_pk_value_on_save(self)
setattr(self, meta.pk.attname, pk_val)
pk_set = pk_val is not None
if not pk_set and (force_update or update_fields):
raise ValueError("Cannot force an update in save() with no primary key.")
updated = False
# Skip an UPDATE when adding an instance and primary key has a default.
if (
not raw and
not force_insert and
self._state.adding and
meta.pk.default and
meta.pk.default is not NOT_PROVIDED
):
force_insert = True
# If possible, try an UPDATE. If that doesn't update anything, do an INSERT.
if pk_set and not force_insert:
base_qs = cls._base_manager.using(using)
values = [(f, None, (getattr(self, f.attname) if raw else f.pre_save(self, False)))
for f in non_pks]
forced_update = update_fields or force_update
updated = self._do_update(base_qs, using, pk_val, values, update_fields,
forced_update)
if force_update and not updated:
raise DatabaseError("Forced update did not affect any rows.")
if update_fields and not updated:
raise DatabaseError("Save with update_fields did not affect any rows.")
if not updated:
if meta.order_with_respect_to:
# If this is a model with an order_with_respect_to
# autopopulate the _order field
field = meta.order_with_respect_to
filter_args = field.get_filter_kwargs_for_object(self)
self._order = cls._base_manager.using(using).filter(**filter_args).aggregate(
_order__max=Coalesce(
ExpressionWrapper(Max('_order') + Value(1), output_field=IntegerField()),
Value(0),
),
)['_order__max']
fields = meta.local_concrete_fields
if not pk_set:
fields = [f for f in fields if f is not meta.auto_field]
returning_fields = meta.db_returning_fields
results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw)
if results:
for value, field in zip(results[0], returning_fields):
setattr(self, field.attname, value)
return updated
def _do_update(self, base_qs, using, pk_val, values, update_fields, forced_update):
"""
Try to update the model. Return True if the model was updated (if an
update query was done and a matching row was found in the DB).
"""
filtered = base_qs.filter(pk=pk_val)
if not values:
# We can end up here when saving a model in inheritance chain where
# update_fields doesn't target any field in current model. In that
# case we just say the update succeeded. Another case ending up here
# is a model with just PK - in that case check that the PK still
# exists.
return update_fields is not None or filtered.exists()
if self._meta.select_on_save and not forced_update:
return (
filtered.exists() and
# It may happen that the object is deleted from the DB right after
# this check, causing the subsequent UPDATE to return zero matching
# rows. The same result can occur in some rare cases when the
# database returns zero despite the UPDATE being executed
# successfully (a row is matched and updated). In order to
# distinguish these two cases, the object's existence in the
# database is again checked for if the UPDATE query returns 0.
(filtered._update(values) > 0 or filtered.exists())
)
return filtered._update(values) > 0
def _do_insert(self, manager, using, fields, returning_fields, raw):
"""
Do an INSERT. If returning_fields is defined then this method should
return the newly created data for the model.
"""
return manager._insert(
[self], fields=fields, returning_fields=returning_fields,
using=using, raw=raw,
)
def _prepare_related_fields_for_save(self, operation_name, fields=None):
# Ensure that a model instance without a PK hasn't been assigned to
# a ForeignKey or OneToOneField on this model. If the field is
# nullable, allowing the save would result in silent data loss.
for field in self._meta.concrete_fields:
if fields and field not in fields:
continue
# If the related field isn't cached, then an instance hasn't been
# assigned and there's no need to worry about this check.
if field.is_relation and field.is_cached(self):
obj = getattr(self, field.name, None)
if not obj:
continue
# A pk may have been assigned manually to a model instance not
# saved to the database (or auto-generated in a case like
# UUIDField), but we allow the save to proceed and rely on the
# database to raise an IntegrityError if applicable. If
# constraints aren't supported by the database, there's the
# unavoidable risk of data corruption.
if obj.pk is None:
# Remove the object from a related instance cache.
if not field.remote_field.multiple:
field.remote_field.delete_cached_value(obj)
raise ValueError(
"%s() prohibited to prevent data loss due to unsaved "
"related object '%s'." % (operation_name, field.name)
)
elif getattr(self, field.attname) in field.empty_values:
# Use pk from related object if it has been saved after
# an assignment.
setattr(self, field.attname, obj.pk)
# If the relationship's pk/to_field was changed, clear the
# cached relationship.
if getattr(obj, field.target_field.attname) != getattr(self, field.attname):
field.delete_cached_value(self)
def delete(self, using=None, keep_parents=False):
if self.pk is None:
raise ValueError(
"%s object can't be deleted because its %s attribute is set "
"to None." % (self._meta.object_name, self._meta.pk.attname)
)
using = using or router.db_for_write(self.__class__, instance=self)
collector = Collector(using=using)
collector.collect([self], keep_parents=keep_parents)
return collector.delete()
delete.alters_data = True
def _get_FIELD_display(self, field):
value = getattr(self, field.attname)
choices_dict = dict(make_hashable(field.flatchoices))
# force_str() to coerce lazy strings.
return force_str(choices_dict.get(make_hashable(value), value), strings_only=True)
def _get_next_or_previous_by_FIELD(self, field, is_next, **kwargs):
if not self.pk:
raise ValueError("get_next/get_previous cannot be used on unsaved objects.")
op = 'gt' if is_next else 'lt'
order = '' if is_next else '-'
param = getattr(self, field.attname)
q = Q((field.name, param), (f'pk__{op}', self.pk), _connector=Q.AND)
q = Q(q, (f'{field.name}__{op}', param), _connector=Q.OR)
qs = self.__class__._default_manager.using(self._state.db).filter(**kwargs).filter(q).order_by(
'%s%s' % (order, field.name), '%spk' % order
)
try:
return qs[0]
except IndexError:
raise self.DoesNotExist("%s matching query does not exist." % self.__class__._meta.object_name)
def _get_next_or_previous_in_order(self, is_next):
cachename = "__%s_order_cache" % is_next
if not hasattr(self, cachename):
op = 'gt' if is_next else 'lt'
order = '_order' if is_next else '-_order'
order_field = self._meta.order_with_respect_to
filter_args = order_field.get_filter_kwargs_for_object(self)
obj = self.__class__._default_manager.filter(**filter_args).filter(**{
'_order__%s' % op: self.__class__._default_manager.values('_order').filter(**{
self._meta.pk.name: self.pk
})
}).order_by(order)[:1].get()
setattr(self, cachename, obj)
return getattr(self, cachename)
def prepare_database_save(self, field):
if self.pk is None:
raise ValueError("Unsaved model instance %r cannot be used in an ORM query." % self)
return getattr(self, field.remote_field.get_related_field().attname)
def clean(self):
"""
Hook for doing any extra model-wide validation after clean() has been
called on every field by self.clean_fields. Any ValidationError raised
by this method will not be associated with a particular field; it will
have a special-case association with the field defined by NON_FIELD_ERRORS.
"""
pass
def validate_unique(self, exclude=None):
"""
Check unique constraints on the model and raise ValidationError if any
failed.
"""
unique_checks, date_checks = self._get_unique_checks(exclude=exclude)
errors = self._perform_unique_checks(unique_checks)
date_errors = self._perform_date_checks(date_checks)
for k, v in date_errors.items():
errors.setdefault(k, []).extend(v)
if errors:
raise ValidationError(errors)
def _get_unique_checks(self, exclude=None):
"""
Return a list of checks to perform. Since validate_unique() could be
called from a ModelForm, some fields may have been excluded; we can't
perform a unique check on a model that is missing fields involved
in that check. Fields that did not validate should also be excluded,
but they need to be passed in via the exclude argument.
"""
if exclude is None:
exclude = []
unique_checks = []
unique_togethers = [(self.__class__, self._meta.unique_together)]
constraints = [(self.__class__, self._meta.total_unique_constraints)]
for parent_class in self._meta.get_parent_list():
if parent_class._meta.unique_together:
unique_togethers.append((parent_class, parent_class._meta.unique_together))
if parent_class._meta.total_unique_constraints:
constraints.append(
(parent_class, parent_class._meta.total_unique_constraints)
)
for model_class, unique_together in unique_togethers:
for check in unique_together:
if not any(name in exclude for name in check):
# Add the check if the field isn't excluded.
unique_checks.append((model_class, tuple(check)))
for model_class, model_constraints in constraints:
for constraint in model_constraints:
if not any(name in exclude for name in constraint.fields):
unique_checks.append((model_class, constraint.fields))
# These are checks for the unique_for_<date/year/month>.
date_checks = []
# Gather a list of checks for fields declared as unique and add them to
# the list of checks.
fields_with_class = [(self.__class__, self._meta.local_fields)]
for parent_class in self._meta.get_parent_list():
fields_with_class.append((parent_class, parent_class._meta.local_fields))
for model_class, fields in fields_with_class:
for f in fields:
name = f.name
if name in exclude:
continue
if f.unique:
unique_checks.append((model_class, (name,)))
if f.unique_for_date and f.unique_for_date not in exclude:
date_checks.append((model_class, 'date', name, f.unique_for_date))
if f.unique_for_year and f.unique_for_year not in exclude:
date_checks.append((model_class, 'year', name, f.unique_for_year))
if f.unique_for_month and f.unique_for_month not in exclude:
date_checks.append((model_class, 'month', name, f.unique_for_month))
return unique_checks, date_checks
def _perform_unique_checks(self, unique_checks):
errors = {}
for model_class, unique_check in unique_checks:
# Try to look up an existing object with the same values as this
# object's values for all the unique field.
lookup_kwargs = {}
for field_name in unique_check:
f = self._meta.get_field(field_name)
lookup_value = getattr(self, f.attname)
# TODO: Handle multiple backends with different feature flags.
if (lookup_value is None or
(lookup_value == '' and connection.features.interprets_empty_strings_as_nulls)):
# no value, skip the lookup
continue
if f.primary_key and not self._state.adding:
# no need to check for unique primary key when editing
continue
lookup_kwargs[str(field_name)] = lookup_value
# some fields were skipped, no reason to do the check
if len(unique_check) != len(lookup_kwargs):
continue
qs = model_class._default_manager.filter(**lookup_kwargs)
# Exclude the current object from the query if we are editing an
# instance (as opposed to creating a new one)
# Note that we need to use the pk as defined by model_class, not
# self.pk. These can be different fields because model inheritance
# allows single model to have effectively multiple primary keys.
# Refs #17615.
model_class_pk = self._get_pk_val(model_class._meta)
if not self._state.adding and model_class_pk is not None:
qs = qs.exclude(pk=model_class_pk)
if qs.exists():
if len(unique_check) == 1:
key = unique_check[0]
else:
key = NON_FIELD_ERRORS
errors.setdefault(key, []).append(self.unique_error_message(model_class, unique_check))
return errors
def _perform_date_checks(self, date_checks):
errors = {}
for model_class, lookup_type, field, unique_for in date_checks:
lookup_kwargs = {}
# there's a ticket to add a date lookup, we can remove this special
# case if that makes it's way in
date = getattr(self, unique_for)
if date is None:
continue
if lookup_type == 'date':
lookup_kwargs['%s__day' % unique_for] = date.day
lookup_kwargs['%s__month' % unique_for] = date.month
lookup_kwargs['%s__year' % unique_for] = date.year
else:
lookup_kwargs['%s__%s' % (unique_for, lookup_type)] = getattr(date, lookup_type)
lookup_kwargs[field] = getattr(self, field)
qs = model_class._default_manager.filter(**lookup_kwargs)
# Exclude the current object from the query if we are editing an
# instance (as opposed to creating a new one)
if not self._state.adding and self.pk is not None:
qs = qs.exclude(pk=self.pk)
if qs.exists():
errors.setdefault(field, []).append(
self.date_error_message(lookup_type, field, unique_for)
)
return errors
def date_error_message(self, lookup_type, field_name, unique_for):
opts = self._meta
field = opts.get_field(field_name)
return ValidationError(
message=field.error_messages['unique_for_date'],
code='unique_for_date',
params={
'model': self,
'model_name': capfirst(opts.verbose_name),
'lookup_type': lookup_type,
'field': field_name,
'field_label': capfirst(field.verbose_name),
'date_field': unique_for,
'date_field_label': capfirst(opts.get_field(unique_for).verbose_name),
}
)
def unique_error_message(self, model_class, unique_check):
opts = model_class._meta
params = {
'model': self,
'model_class': model_class,
'model_name': capfirst(opts.verbose_name),
'unique_check': unique_check,
}
# A unique field
if len(unique_check) == 1:
field = opts.get_field(unique_check[0])
params['field_label'] = capfirst(field.verbose_name)
return ValidationError(
message=field.error_messages['unique'],
code='unique',
params=params,
)
# unique_together
else:
field_labels = [capfirst(opts.get_field(f).verbose_name) for f in unique_check]
params['field_labels'] = get_text_list(field_labels, _('and'))
return ValidationError(
message=_("%(model_name)s with this %(field_labels)s already exists."),
code='unique_together',
params=params,
)
def full_clean(self, exclude=None, validate_unique=True):
"""
Call clean_fields(), clean(), and validate_unique() on the model.
Raise a ValidationError for any errors that occur.
"""
errors = {}
if exclude is None:
exclude = []
else:
exclude = list(exclude)
try:
self.clean_fields(exclude=exclude)
except ValidationError as e:
errors = e.update_error_dict(errors)
# Form.clean() is run even if other validation fails, so do the
# same with Model.clean() for consistency.
try:
self.clean()
except ValidationError as e:
errors = e.update_error_dict(errors)
# Run unique checks, but only for fields that passed validation.
if validate_unique:
for name in errors:
if name != NON_FIELD_ERRORS and name not in exclude:
exclude.append(name)
try:
self.validate_unique(exclude=exclude)
except ValidationError as e:
errors = e.update_error_dict(errors)
if errors:
raise ValidationError(errors)
def clean_fields(self, exclude=None):
"""
Clean all fields and raise a ValidationError containing a dict
of all validation errors if any occur.
"""
if exclude is None:
exclude = []
errors = {}
for f in self._meta.fields:
if f.name in exclude:
continue
# Skip validation for empty fields with blank=True. The developer
# is responsible for making sure they have a valid value.
raw_value = getattr(self, f.attname)
if f.blank and raw_value in f.empty_values:
continue
try:
setattr(self, f.attname, f.clean(raw_value, self))
except ValidationError as e:
errors[f.name] = e.error_list
if errors:
raise ValidationError(errors)
@classmethod
def check(cls, **kwargs):
errors = [*cls._check_swappable(), *cls._check_model(), *cls._check_managers(**kwargs)]
if not cls._meta.swapped:
databases = kwargs.get('databases') or []
errors += [
*cls._check_fields(**kwargs),
*cls._check_m2m_through_same_relationship(),
*cls._check_long_column_names(databases),
]
clash_errors = (
*cls._check_id_field(),
*cls._check_field_name_clashes(),
*cls._check_model_name_db_lookup_clashes(),
*cls._check_property_name_related_field_accessor_clashes(),
*cls._check_single_primary_key(),
)
errors.extend(clash_errors)
# If there are field name clashes, hide consequent column name
# clashes.
if not clash_errors:
errors.extend(cls._check_column_name_clashes())
errors += [
*cls._check_index_together(),
*cls._check_unique_together(),
*cls._check_indexes(databases),
*cls._check_ordering(),
*cls._check_constraints(databases),
*cls._check_default_pk(),
]
return errors
@classmethod
def _check_default_pk(cls):
if (
not cls._meta.abstract and
cls._meta.pk.auto_created and
# Inherited PKs are checked in parents models.
not (
isinstance(cls._meta.pk, OneToOneField) and
cls._meta.pk.remote_field.parent_link
) and
not settings.is_overridden('DEFAULT_AUTO_FIELD') and
cls._meta.app_config and
not cls._meta.app_config._is_default_auto_field_overridden
):
return [
checks.Warning(
f"Auto-created primary key used when not defining a "
f"primary key type, by default "
f"'{settings.DEFAULT_AUTO_FIELD}'.",
hint=(
f"Configure the DEFAULT_AUTO_FIELD setting or the "
f"{cls._meta.app_config.__class__.__qualname__}."
f"default_auto_field attribute to point to a subclass "
f"of AutoField, e.g. 'django.db.models.BigAutoField'."
),
obj=cls,
id='models.W042',
),
]
return []
@classmethod
def _check_swappable(cls):
"""Check if the swapped model exists."""
errors = []
if cls._meta.swapped:
try:
apps.get_model(cls._meta.swapped)
except ValueError:
errors.append(
checks.Error(
"'%s' is not of the form 'app_label.app_name'." % cls._meta.swappable,
id='models.E001',
)
)
except LookupError:
app_label, model_name = cls._meta.swapped.split('.')
errors.append(
checks.Error(
"'%s' references '%s.%s', which has not been "
"installed, or is abstract." % (
cls._meta.swappable, app_label, model_name
),
id='models.E002',
)
)
return errors
@classmethod
def _check_model(cls):
errors = []
if cls._meta.proxy:
if cls._meta.local_fields or cls._meta.local_many_to_many:
errors.append(
checks.Error(
"Proxy model '%s' contains model fields." % cls.__name__,
id='models.E017',
)
)
return errors
@classmethod
def _check_managers(cls, **kwargs):
"""Perform all manager checks."""
errors = []
for manager in cls._meta.managers:
errors.extend(manager.check(**kwargs))
return errors
@classmethod
def _check_fields(cls, **kwargs):
"""Perform all field checks."""
errors = []
for field in cls._meta.local_fields:
errors.extend(field.check(**kwargs))
for field in cls._meta.local_many_to_many:
errors.extend(field.check(from_model=cls, **kwargs))
return errors
@classmethod
def _check_m2m_through_same_relationship(cls):
""" Check if no relationship model is used by more than one m2m field.
"""
errors = []
seen_intermediary_signatures = []
fields = cls._meta.local_many_to_many
# Skip when the target model wasn't found.
fields = (f for f in fields if isinstance(f.remote_field.model, ModelBase))
# Skip when the relationship model wasn't found.
fields = (f for f in fields if isinstance(f.remote_field.through, ModelBase))
for f in fields:
signature = (f.remote_field.model, cls, f.remote_field.through, f.remote_field.through_fields)
if signature in seen_intermediary_signatures:
errors.append(
checks.Error(
"The model has two identical many-to-many relations "
"through the intermediate model '%s'." %
f.remote_field.through._meta.label,
obj=cls,
id='models.E003',
)
)
else:
seen_intermediary_signatures.append(signature)
return errors
@classmethod
def _check_id_field(cls):
"""Check if `id` field is a primary key."""
fields = [f for f in cls._meta.local_fields if f.name == 'id' and f != cls._meta.pk]
# fields is empty or consists of the invalid "id" field
if fields and not fields[0].primary_key and cls._meta.pk.name == 'id':
return [
checks.Error(
"'id' can only be used as a field name if the field also "
"sets 'primary_key=True'.",
obj=cls,
id='models.E004',
)
]
else:
return []
@classmethod
def _check_field_name_clashes(cls):
"""Forbid field shadowing in multi-table inheritance."""
errors = []
used_fields = {} # name or attname -> field
# Check that multi-inheritance doesn't cause field name shadowing.
for parent in cls._meta.get_parent_list():
for f in parent._meta.local_fields:
clash = used_fields.get(f.name) or used_fields.get(f.attname) or None
if clash:
errors.append(
checks.Error(
"The field '%s' from parent model "
"'%s' clashes with the field '%s' "
"from parent model '%s'." % (
clash.name, clash.model._meta,
f.name, f.model._meta
),
obj=cls,
id='models.E005',
)
)
used_fields[f.name] = f
used_fields[f.attname] = f
# Check that fields defined in the model don't clash with fields from
# parents, including auto-generated fields like multi-table inheritance
# child accessors.
for parent in cls._meta.get_parent_list():
for f in parent._meta.get_fields():
if f not in used_fields:
used_fields[f.name] = f
for f in cls._meta.local_fields:
clash = used_fields.get(f.name) or used_fields.get(f.attname) or None
# Note that we may detect clash between user-defined non-unique
# field "id" and automatically added unique field "id", both
# defined at the same model. This special case is considered in
# _check_id_field and here we ignore it.
id_conflict = f.name == "id" and clash and clash.name == "id" and clash.model == cls
if clash and not id_conflict:
errors.append(
checks.Error(
"The field '%s' clashes with the field '%s' "
"from model '%s'." % (
f.name, clash.name, clash.model._meta
),
obj=f,
id='models.E006',
)
)
used_fields[f.name] = f
used_fields[f.attname] = f
return errors
@classmethod
def _check_column_name_clashes(cls):
# Store a list of column names which have already been used by other fields.
used_column_names = []
errors = []
for f in cls._meta.local_fields:
_, column_name = f.get_attname_column()
# Ensure the column name is not already in use.
if column_name and column_name in used_column_names:
errors.append(
checks.Error(
"Field '%s' has column name '%s' that is used by "
"another field." % (f.name, column_name),
hint="Specify a 'db_column' for the field.",
obj=cls,
id='models.E007'
)
)
else:
used_column_names.append(column_name)
return errors
@classmethod
def _check_model_name_db_lookup_clashes(cls):
errors = []
model_name = cls.__name__
if model_name.startswith('_') or model_name.endswith('_'):
errors.append(
checks.Error(
"The model name '%s' cannot start or end with an underscore "
"as it collides with the query lookup syntax." % model_name,
obj=cls,
id='models.E023'
)
)
elif LOOKUP_SEP in model_name:
errors.append(
checks.Error(
"The model name '%s' cannot contain double underscores as "
"it collides with the query lookup syntax." % model_name,
obj=cls,
id='models.E024'
)
)
return errors
@classmethod
def _check_property_name_related_field_accessor_clashes(cls):
errors = []
property_names = cls._meta._property_names
related_field_accessors = (
f.get_attname() for f in cls._meta._get_fields(reverse=False)
if f.is_relation and f.related_model is not None
)
for accessor in related_field_accessors:
if accessor in property_names:
errors.append(
checks.Error(
"The property '%s' clashes with a related field "
"accessor." % accessor,
obj=cls,
id='models.E025',
)
)
return errors
@classmethod
def _check_single_primary_key(cls):
errors = []
if sum(1 for f in cls._meta.local_fields if f.primary_key) > 1:
errors.append(
checks.Error(
"The model cannot have more than one field with "
"'primary_key=True'.",
obj=cls,
id='models.E026',
)
)
return errors
@classmethod
def _check_index_together(cls):
"""Check the value of "index_together" option."""
if not isinstance(cls._meta.index_together, (tuple, list)):
return [
checks.Error(
"'index_together' must be a list or tuple.",
obj=cls,
id='models.E008',
)
]
elif any(not isinstance(fields, (tuple, list)) for fields in cls._meta.index_together):
return [
checks.Error(
"All 'index_together' elements must be lists or tuples.",
obj=cls,
id='models.E009',
)
]
else:
errors = []
for fields in cls._meta.index_together:
errors.extend(cls._check_local_fields(fields, "index_together"))
return errors
@classmethod
def _check_unique_together(cls):
"""Check the value of "unique_together" option."""
if not isinstance(cls._meta.unique_together, (tuple, list)):
return [
checks.Error(
"'unique_together' must be a list or tuple.",
obj=cls,
id='models.E010',
)
]
elif any(not isinstance(fields, (tuple, list)) for fields in cls._meta.unique_together):
return [
checks.Error(
"All 'unique_together' elements must be lists or tuples.",
obj=cls,
id='models.E011',
)
]
else:
errors = []
for fields in cls._meta.unique_together:
errors.extend(cls._check_local_fields(fields, "unique_together"))
return errors
@classmethod
def _check_indexes(cls, databases):
"""Check fields, names, and conditions of indexes."""
errors = []
references = set()
for index in cls._meta.indexes:
# Index name can't start with an underscore or a number, restricted
# for cross-database compatibility with Oracle.
if index.name[0] == '_' or index.name[0].isdigit():
errors.append(
checks.Error(
"The index name '%s' cannot start with an underscore "
"or a number." % index.name,
obj=cls,
id='models.E033',
),
)
if len(index.name) > index.max_name_length:
errors.append(
checks.Error(
"The index name '%s' cannot be longer than %d "
"characters." % (index.name, index.max_name_length),
obj=cls,
id='models.E034',
),
)
if index.contains_expressions:
for expression in index.expressions:
references.update(
ref[0] for ref in cls._get_expr_references(expression)
)
for db in databases:
if not router.allow_migrate_model(db, cls):
continue
connection = connections[db]
if not (
connection.features.supports_partial_indexes or
'supports_partial_indexes' in cls._meta.required_db_features
) and any(index.condition is not None for index in cls._meta.indexes):
errors.append(
checks.Warning(
'%s does not support indexes with conditions.'
% connection.display_name,
hint=(
"Conditions will be ignored. Silence this warning "
"if you don't care about it."
),
obj=cls,
id='models.W037',
)
)
if not (
connection.features.supports_covering_indexes or
'supports_covering_indexes' in cls._meta.required_db_features
) and any(index.include for index in cls._meta.indexes):
errors.append(
checks.Warning(
'%s does not support indexes with non-key columns.'
% connection.display_name,
hint=(
"Non-key columns will be ignored. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W040',
)
)
if not (
connection.features.supports_expression_indexes or
'supports_expression_indexes' in cls._meta.required_db_features
) and any(index.contains_expressions for index in cls._meta.indexes):
errors.append(
checks.Warning(
'%s does not support indexes on expressions.'
% connection.display_name,
hint=(
"An index won't be created. Silence this warning "
"if you don't care about it."
),
obj=cls,
id='models.W043',
)
)
fields = [field for index in cls._meta.indexes for field, _ in index.fields_orders]
fields += [include for index in cls._meta.indexes for include in index.include]
fields += references
errors.extend(cls._check_local_fields(fields, 'indexes'))
return errors
@classmethod
def _check_local_fields(cls, fields, option):
from django.db import models
# In order to avoid hitting the relation tree prematurely, we use our
# own fields_map instead of using get_field()
forward_fields_map = {}
for field in cls._meta._get_fields(reverse=False):
forward_fields_map[field.name] = field
if hasattr(field, 'attname'):
forward_fields_map[field.attname] = field
errors = []
for field_name in fields:
try:
field = forward_fields_map[field_name]
except KeyError:
errors.append(
checks.Error(
"'%s' refers to the nonexistent field '%s'." % (
option, field_name,
),
obj=cls,
id='models.E012',
)
)
else:
if isinstance(field.remote_field, models.ManyToManyRel):
errors.append(
checks.Error(
"'%s' refers to a ManyToManyField '%s', but "
"ManyToManyFields are not permitted in '%s'." % (
option, field_name, option,
),
obj=cls,
id='models.E013',
)
)
elif field not in cls._meta.local_fields:
errors.append(
checks.Error(
"'%s' refers to field '%s' which is not local to model '%s'."
% (option, field_name, cls._meta.object_name),
hint="This issue may be caused by multi-table inheritance.",
obj=cls,
id='models.E016',
)
)
return errors
@classmethod
def _check_ordering(cls):
"""
Check "ordering" option -- is it a list of strings and do all fields
exist?
"""
if cls._meta._ordering_clash:
return [
checks.Error(
"'ordering' and 'order_with_respect_to' cannot be used together.",
obj=cls,
id='models.E021',
),
]
if cls._meta.order_with_respect_to or not cls._meta.ordering:
return []
if not isinstance(cls._meta.ordering, (list, tuple)):
return [
checks.Error(
"'ordering' must be a tuple or list (even if you want to order by only one field).",
obj=cls,
id='models.E014',
)
]
errors = []
fields = cls._meta.ordering
# Skip expressions and '?' fields.
fields = (f for f in fields if isinstance(f, str) and f != '?')
# Convert "-field" to "field".
fields = ((f[1:] if f.startswith('-') else f) for f in fields)
# Separate related fields and non-related fields.
_fields = []
related_fields = []
for f in fields:
if LOOKUP_SEP in f:
related_fields.append(f)
else:
_fields.append(f)
fields = _fields
# Check related fields.
for field in related_fields:
_cls = cls
fld = None
for part in field.split(LOOKUP_SEP):
try:
# pk is an alias that won't be found by opts.get_field.
if part == 'pk':
fld = _cls._meta.pk
else:
fld = _cls._meta.get_field(part)
if fld.is_relation:
_cls = fld.path_infos[-1].to_opts.model
else:
_cls = None
except (FieldDoesNotExist, AttributeError):
if fld is None or (
fld.get_transform(part) is None and fld.get_lookup(part) is None
):
errors.append(
checks.Error(
"'ordering' refers to the nonexistent field, "
"related field, or lookup '%s'." % field,
obj=cls,
id='models.E015',
)
)
# Skip ordering on pk. This is always a valid order_by field
# but is an alias and therefore won't be found by opts.get_field.
fields = {f for f in fields if f != 'pk'}
# Check for invalid or nonexistent fields in ordering.
invalid_fields = []
# Any field name that is not present in field_names does not exist.
# Also, ordering by m2m fields is not allowed.
opts = cls._meta
valid_fields = set(chain.from_iterable(
(f.name, f.attname) if not (f.auto_created and not f.concrete) else (f.field.related_query_name(),)
for f in chain(opts.fields, opts.related_objects)
))
invalid_fields.extend(fields - valid_fields)
for invalid_field in invalid_fields:
errors.append(
checks.Error(
"'ordering' refers to the nonexistent field, related "
"field, or lookup '%s'." % invalid_field,
obj=cls,
id='models.E015',
)
)
return errors
@classmethod
def _check_long_column_names(cls, databases):
"""
Check that any auto-generated column names are shorter than the limits
for each database in which the model will be created.
"""
if not databases:
return []
errors = []
allowed_len = None
db_alias = None
# Find the minimum max allowed length among all specified db_aliases.
for db in databases:
# skip databases where the model won't be created
if not router.allow_migrate_model(db, cls):
continue
connection = connections[db]
max_name_length = connection.ops.max_name_length()
if max_name_length is None or connection.features.truncates_names:
continue
else:
if allowed_len is None:
allowed_len = max_name_length
db_alias = db
elif max_name_length < allowed_len:
allowed_len = max_name_length
db_alias = db
if allowed_len is None:
return errors
for f in cls._meta.local_fields:
_, column_name = f.get_attname_column()
# Check if auto-generated name for the field is too long
# for the database.
if f.db_column is None and column_name is not None and len(column_name) > allowed_len:
errors.append(
checks.Error(
'Autogenerated column name too long for field "%s". '
'Maximum length is "%s" for database "%s".'
% (column_name, allowed_len, db_alias),
hint="Set the column name manually using 'db_column'.",
obj=cls,
id='models.E018',
)
)
for f in cls._meta.local_many_to_many:
# Skip nonexistent models.
if isinstance(f.remote_field.through, str):
continue
# Check if auto-generated name for the M2M field is too long
# for the database.
for m2m in f.remote_field.through._meta.local_fields:
_, rel_name = m2m.get_attname_column()
if m2m.db_column is None and rel_name is not None and len(rel_name) > allowed_len:
errors.append(
checks.Error(
'Autogenerated column name too long for M2M field '
'"%s". Maximum length is "%s" for database "%s".'
% (rel_name, allowed_len, db_alias),
hint=(
"Use 'through' to create a separate model for "
"M2M and then set column_name using 'db_column'."
),
obj=cls,
id='models.E019',
)
)
return errors
@classmethod
def _get_expr_references(cls, expr):
if isinstance(expr, Q):
for child in expr.children:
if isinstance(child, tuple):
lookup, value = child
yield tuple(lookup.split(LOOKUP_SEP))
yield from cls._get_expr_references(value)
else:
yield from cls._get_expr_references(child)
elif isinstance(expr, F):
yield tuple(expr.name.split(LOOKUP_SEP))
elif hasattr(expr, 'get_source_expressions'):
for src_expr in expr.get_source_expressions():
yield from cls._get_expr_references(src_expr)
@classmethod
def _check_constraints(cls, databases):
errors = []
for db in databases:
if not router.allow_migrate_model(db, cls):
continue
connection = connections[db]
if not (
connection.features.supports_table_check_constraints or
'supports_table_check_constraints' in cls._meta.required_db_features
) and any(
isinstance(constraint, CheckConstraint)
for constraint in cls._meta.constraints
):
errors.append(
checks.Warning(
'%s does not support check constraints.' % connection.display_name,
hint=(
"A constraint won't be created. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W027',
)
)
if not (
connection.features.supports_partial_indexes or
'supports_partial_indexes' in cls._meta.required_db_features
) and any(
isinstance(constraint, UniqueConstraint) and constraint.condition is not None
for constraint in cls._meta.constraints
):
errors.append(
checks.Warning(
'%s does not support unique constraints with '
'conditions.' % connection.display_name,
hint=(
"A constraint won't be created. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W036',
)
)
if not (
connection.features.supports_deferrable_unique_constraints or
'supports_deferrable_unique_constraints' in cls._meta.required_db_features
) and any(
isinstance(constraint, UniqueConstraint) and constraint.deferrable is not None
for constraint in cls._meta.constraints
):
errors.append(
checks.Warning(
'%s does not support deferrable unique constraints.'
% connection.display_name,
hint=(
"A constraint won't be created. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W038',
)
)
if not (
connection.features.supports_covering_indexes or
'supports_covering_indexes' in cls._meta.required_db_features
) and any(
isinstance(constraint, UniqueConstraint) and constraint.include
for constraint in cls._meta.constraints
):
errors.append(
checks.Warning(
'%s does not support unique constraints with non-key '
'columns.' % connection.display_name,
hint=(
"A constraint won't be created. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W039',
)
)
if not (
connection.features.supports_expression_indexes or
'supports_expression_indexes' in cls._meta.required_db_features
) and any(
isinstance(constraint, UniqueConstraint) and constraint.contains_expressions
for constraint in cls._meta.constraints
):
errors.append(
checks.Warning(
'%s does not support unique constraints on '
'expressions.' % connection.display_name,
hint=(
"A constraint won't be created. Silence this "
"warning if you don't care about it."
),
obj=cls,
id='models.W044',
)
)
fields = set(chain.from_iterable(
(*constraint.fields, *constraint.include)
for constraint in cls._meta.constraints if isinstance(constraint, UniqueConstraint)
))
references = set()
for constraint in cls._meta.constraints:
if isinstance(constraint, UniqueConstraint):
if (
connection.features.supports_partial_indexes or
'supports_partial_indexes' not in cls._meta.required_db_features
) and isinstance(constraint.condition, Q):
references.update(cls._get_expr_references(constraint.condition))
if (
connection.features.supports_expression_indexes or
'supports_expression_indexes' not in cls._meta.required_db_features
) and constraint.contains_expressions:
for expression in constraint.expressions:
references.update(cls._get_expr_references(expression))
elif isinstance(constraint, CheckConstraint):
if (
connection.features.supports_table_check_constraints or
'supports_table_check_constraints' not in cls._meta.required_db_features
) and isinstance(constraint.check, Q):
references.update(cls._get_expr_references(constraint.check))
for field_name, *lookups in references:
# pk is an alias that won't be found by opts.get_field.
if field_name != 'pk':
fields.add(field_name)
if not lookups:
# If it has no lookups it cannot result in a JOIN.
continue
try:
if field_name == 'pk':
field = cls._meta.pk
else:
field = cls._meta.get_field(field_name)
if not field.is_relation or field.many_to_many or field.one_to_many:
continue
except FieldDoesNotExist:
continue
# JOIN must happen at the first lookup.
first_lookup = lookups[0]
if (
hasattr(field, 'get_transform') and
hasattr(field, 'get_lookup') and
field.get_transform(first_lookup) is None and
field.get_lookup(first_lookup) is None
):
errors.append(
checks.Error(
"'constraints' refers to the joined field '%s'."
% LOOKUP_SEP.join([field_name] + lookups),
obj=cls,
id='models.E041',
)
)
errors.extend(cls._check_local_fields(fields, 'constraints'))
return errors
############################################
# HELPER FUNCTIONS (CURRIED MODEL METHODS) #
############################################
# ORDERING METHODS #########################
def method_set_order(self, ordered_obj, id_list, using=None):
if using is None:
using = DEFAULT_DB_ALIAS
order_wrt = ordered_obj._meta.order_with_respect_to
filter_args = order_wrt.get_forward_related_filter(self)
ordered_obj.objects.db_manager(using).filter(**filter_args).bulk_update([
ordered_obj(pk=pk, _order=order) for order, pk in enumerate(id_list)
], ['_order'])
def method_get_order(self, ordered_obj):
order_wrt = ordered_obj._meta.order_with_respect_to
filter_args = order_wrt.get_forward_related_filter(self)
pk_name = ordered_obj._meta.pk.name
return ordered_obj.objects.filter(**filter_args).values_list(pk_name, flat=True)
def make_foreign_order_accessors(model, related_model):
setattr(
related_model,
'get_%s_order' % model.__name__.lower(),
partialmethod(method_get_order, model)
)
setattr(
related_model,
'set_%s_order' % model.__name__.lower(),
partialmethod(method_set_order, model)
)
########
# MISC #
########
def model_unpickle(model_id):
"""Used to unpickle Model subclasses with deferred fields."""
if isinstance(model_id, tuple):
model = apps.get_model(*model_id)
else:
# Backwards compat - the model was cached directly in earlier versions.
model = model_id
return model.__new__(model)
model_unpickle.__safe_for_unpickle__ = True
|
9b14d469bfcd3740a38e971bd7b1172ded9d0f99ae2d40daa0e648386342cd35 | import copy
import datetime
import functools
import inspect
from decimal import Decimal
from uuid import UUID
from django.core.exceptions import EmptyResultSet, FieldError
from django.db import DatabaseError, NotSupportedError, connection
from django.db.models import fields
from django.db.models.constants import LOOKUP_SEP
from django.db.models.query_utils import Q
from django.utils.deconstruct import deconstructible
from django.utils.functional import cached_property
from django.utils.hashable import make_hashable
class SQLiteNumericMixin:
"""
Some expressions with output_field=DecimalField() must be cast to
numeric to be properly filtered.
"""
def as_sqlite(self, compiler, connection, **extra_context):
sql, params = self.as_sql(compiler, connection, **extra_context)
try:
if self.output_field.get_internal_type() == 'DecimalField':
sql = 'CAST(%s AS NUMERIC)' % sql
except FieldError:
pass
return sql, params
class Combinable:
"""
Provide the ability to combine one or two objects with
some connector. For example F('foo') + F('bar').
"""
# Arithmetic connectors
ADD = '+'
SUB = '-'
MUL = '*'
DIV = '/'
POW = '^'
# The following is a quoted % operator - it is quoted because it can be
# used in strings that also have parameter substitution.
MOD = '%%'
# Bitwise operators - note that these are generated by .bitand()
# and .bitor(), the '&' and '|' are reserved for boolean operator
# usage.
BITAND = '&'
BITOR = '|'
BITLEFTSHIFT = '<<'
BITRIGHTSHIFT = '>>'
BITXOR = '#'
def _combine(self, other, connector, reversed):
if not hasattr(other, 'resolve_expression'):
# everything must be resolvable to an expression
other = Value(other)
if reversed:
return CombinedExpression(other, connector, self)
return CombinedExpression(self, connector, other)
#############
# OPERATORS #
#############
def __neg__(self):
return self._combine(-1, self.MUL, False)
def __add__(self, other):
return self._combine(other, self.ADD, False)
def __sub__(self, other):
return self._combine(other, self.SUB, False)
def __mul__(self, other):
return self._combine(other, self.MUL, False)
def __truediv__(self, other):
return self._combine(other, self.DIV, False)
def __mod__(self, other):
return self._combine(other, self.MOD, False)
def __pow__(self, other):
return self._combine(other, self.POW, False)
def __and__(self, other):
if getattr(self, 'conditional', False) and getattr(other, 'conditional', False):
return Q(self) & Q(other)
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def bitand(self, other):
return self._combine(other, self.BITAND, False)
def bitleftshift(self, other):
return self._combine(other, self.BITLEFTSHIFT, False)
def bitrightshift(self, other):
return self._combine(other, self.BITRIGHTSHIFT, False)
def bitxor(self, other):
return self._combine(other, self.BITXOR, False)
def __or__(self, other):
if getattr(self, 'conditional', False) and getattr(other, 'conditional', False):
return Q(self) | Q(other)
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def bitor(self, other):
return self._combine(other, self.BITOR, False)
def __radd__(self, other):
return self._combine(other, self.ADD, True)
def __rsub__(self, other):
return self._combine(other, self.SUB, True)
def __rmul__(self, other):
return self._combine(other, self.MUL, True)
def __rtruediv__(self, other):
return self._combine(other, self.DIV, True)
def __rmod__(self, other):
return self._combine(other, self.MOD, True)
def __rpow__(self, other):
return self._combine(other, self.POW, True)
def __rand__(self, other):
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
def __ror__(self, other):
raise NotImplementedError(
"Use .bitand() and .bitor() for bitwise logical operations."
)
class BaseExpression:
"""Base class for all query expressions."""
empty_result_set_value = NotImplemented
# aggregate specific fields
is_summary = False
_output_field_resolved_to_none = False
# Can the expression be used in a WHERE clause?
filterable = True
# Can the expression can be used as a source expression in Window?
window_compatible = False
def __init__(self, output_field=None):
if output_field is not None:
self.output_field = output_field
def __getstate__(self):
state = self.__dict__.copy()
state.pop('convert_value', None)
return state
def get_db_converters(self, connection):
return (
[]
if self.convert_value is self._convert_value_noop else
[self.convert_value]
) + self.output_field.get_db_converters(connection)
def get_source_expressions(self):
return []
def set_source_expressions(self, exprs):
assert not exprs
def _parse_expressions(self, *expressions):
return [
arg if hasattr(arg, 'resolve_expression') else (
F(arg) if isinstance(arg, str) else Value(arg)
) for arg in expressions
]
def as_sql(self, compiler, connection):
"""
Responsible for returning a (sql, [params]) tuple to be included
in the current query.
Different backends can provide their own implementation, by
providing an `as_{vendor}` method and patching the Expression:
```
def override_as_sql(self, compiler, connection):
# custom logic
return super().as_sql(compiler, connection)
setattr(Expression, 'as_' + connection.vendor, override_as_sql)
```
Arguments:
* compiler: the query compiler responsible for generating the query.
Must have a compile method, returning a (sql, [params]) tuple.
Calling compiler(value) will return a quoted `value`.
* connection: the database connection used for the current query.
Return: (sql, params)
Where `sql` is a string containing ordered sql parameters to be
replaced with the elements of the list `params`.
"""
raise NotImplementedError("Subclasses must implement as_sql()")
@cached_property
def contains_aggregate(self):
return any(expr and expr.contains_aggregate for expr in self.get_source_expressions())
@cached_property
def contains_over_clause(self):
return any(expr and expr.contains_over_clause for expr in self.get_source_expressions())
@cached_property
def contains_column_references(self):
return any(expr and expr.contains_column_references for expr in self.get_source_expressions())
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
"""
Provide the chance to do any preprocessing or validation before being
added to the query.
Arguments:
* query: the backend query implementation
* allow_joins: boolean allowing or denying use of joins
in this query
* reuse: a set of reusable joins for multijoins
* summarize: a terminal aggregate clause
* for_save: whether this expression about to be used in a save or update
Return: an Expression to be added to the query.
"""
c = self.copy()
c.is_summary = summarize
c.set_source_expressions([
expr.resolve_expression(query, allow_joins, reuse, summarize)
if expr else None
for expr in c.get_source_expressions()
])
return c
@property
def conditional(self):
return isinstance(self.output_field, fields.BooleanField)
@property
def field(self):
return self.output_field
@cached_property
def output_field(self):
"""Return the output type of this expressions."""
output_field = self._resolve_output_field()
if output_field is None:
self._output_field_resolved_to_none = True
raise FieldError('Cannot resolve expression type, unknown output_field')
return output_field
@cached_property
def _output_field_or_none(self):
"""
Return the output field of this expression, or None if
_resolve_output_field() didn't return an output type.
"""
try:
return self.output_field
except FieldError:
if not self._output_field_resolved_to_none:
raise
def _resolve_output_field(self):
"""
Attempt to infer the output type of the expression. If the output
fields of all source fields match then, simply infer the same type
here. This isn't always correct, but it makes sense most of the time.
Consider the difference between `2 + 2` and `2 / 3`. Inferring
the type here is a convenience for the common case. The user should
supply their own output_field with more complex computations.
If a source's output field resolves to None, exclude it from this check.
If all sources are None, then an error is raised higher up the stack in
the output_field property.
"""
sources_iter = (source for source in self.get_source_fields() if source is not None)
for output_field in sources_iter:
for source in sources_iter:
if not isinstance(output_field, source.__class__):
raise FieldError(
'Expression contains mixed types: %s, %s. You must '
'set output_field.' % (
output_field.__class__.__name__,
source.__class__.__name__,
)
)
return output_field
@staticmethod
def _convert_value_noop(value, expression, connection):
return value
@cached_property
def convert_value(self):
"""
Expressions provide their own converters because users have the option
of manually specifying the output_field which may be a different type
from the one the database returns.
"""
field = self.output_field
internal_type = field.get_internal_type()
if internal_type == 'FloatField':
return lambda value, expression, connection: None if value is None else float(value)
elif internal_type.endswith('IntegerField'):
return lambda value, expression, connection: None if value is None else int(value)
elif internal_type == 'DecimalField':
return lambda value, expression, connection: None if value is None else Decimal(value)
return self._convert_value_noop
def get_lookup(self, lookup):
return self.output_field.get_lookup(lookup)
def get_transform(self, name):
return self.output_field.get_transform(name)
def relabeled_clone(self, change_map):
clone = self.copy()
clone.set_source_expressions([
e.relabeled_clone(change_map) if e is not None else None
for e in self.get_source_expressions()
])
return clone
def copy(self):
return copy.copy(self)
def get_group_by_cols(self, alias=None):
if not self.contains_aggregate:
return [self]
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
def get_source_fields(self):
"""Return the underlying field types used by this aggregate."""
return [e._output_field_or_none for e in self.get_source_expressions()]
def asc(self, **kwargs):
return OrderBy(self, **kwargs)
def desc(self, **kwargs):
return OrderBy(self, descending=True, **kwargs)
def reverse_ordering(self):
return self
def flatten(self):
"""
Recursively yield this expression and all subexpressions, in
depth-first order.
"""
yield self
for expr in self.get_source_expressions():
if expr:
if hasattr(expr, 'flatten'):
yield from expr.flatten()
else:
yield expr
def select_format(self, compiler, sql, params):
"""
Custom format for select clauses. For example, EXISTS expressions need
to be wrapped in CASE WHEN on Oracle.
"""
if hasattr(self.output_field, 'select_format'):
return self.output_field.select_format(compiler, sql, params)
return sql, params
@deconstructible
class Expression(BaseExpression, Combinable):
"""An expression that can be combined with other expressions."""
@cached_property
def identity(self):
constructor_signature = inspect.signature(self.__init__)
args, kwargs = self._constructor_args
signature = constructor_signature.bind_partial(*args, **kwargs)
signature.apply_defaults()
arguments = signature.arguments.items()
identity = [self.__class__]
for arg, value in arguments:
if isinstance(value, fields.Field):
if value.name and value.model:
value = (value.model._meta.label, value.name)
else:
value = type(value)
else:
value = make_hashable(value)
identity.append((arg, value))
return tuple(identity)
def __eq__(self, other):
if not isinstance(other, Expression):
return NotImplemented
return other.identity == self.identity
def __hash__(self):
return hash(self.identity)
_connector_combinators = {
connector: [
(fields.IntegerField, fields.IntegerField, fields.IntegerField),
(fields.IntegerField, fields.DecimalField, fields.DecimalField),
(fields.DecimalField, fields.IntegerField, fields.DecimalField),
(fields.IntegerField, fields.FloatField, fields.FloatField),
(fields.FloatField, fields.IntegerField, fields.FloatField),
]
for connector in (Combinable.ADD, Combinable.SUB, Combinable.MUL, Combinable.DIV)
}
@functools.lru_cache(maxsize=128)
def _resolve_combined_type(connector, lhs_type, rhs_type):
combinators = _connector_combinators.get(connector, ())
for combinator_lhs_type, combinator_rhs_type, combined_type in combinators:
if issubclass(lhs_type, combinator_lhs_type) and issubclass(rhs_type, combinator_rhs_type):
return combined_type
class CombinedExpression(SQLiteNumericMixin, Expression):
def __init__(self, lhs, connector, rhs, output_field=None):
super().__init__(output_field=output_field)
self.connector = connector
self.lhs = lhs
self.rhs = rhs
def __repr__(self):
return "<{}: {}>".format(self.__class__.__name__, self)
def __str__(self):
return "{} {} {}".format(self.lhs, self.connector, self.rhs)
def get_source_expressions(self):
return [self.lhs, self.rhs]
def set_source_expressions(self, exprs):
self.lhs, self.rhs = exprs
def _resolve_output_field(self):
try:
return super()._resolve_output_field()
except FieldError:
combined_type = _resolve_combined_type(
self.connector,
type(self.lhs.output_field),
type(self.rhs.output_field),
)
if combined_type is None:
raise
return combined_type()
def as_sql(self, compiler, connection):
expressions = []
expression_params = []
sql, params = compiler.compile(self.lhs)
expressions.append(sql)
expression_params.extend(params)
sql, params = compiler.compile(self.rhs)
expressions.append(sql)
expression_params.extend(params)
# order of precedence
expression_wrapper = '(%s)'
sql = connection.ops.combine_expression(self.connector, expressions)
return expression_wrapper % sql, expression_params
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
lhs = self.lhs.resolve_expression(query, allow_joins, reuse, summarize, for_save)
rhs = self.rhs.resolve_expression(query, allow_joins, reuse, summarize, for_save)
if not isinstance(self, (DurationExpression, TemporalSubtraction)):
try:
lhs_type = lhs.output_field.get_internal_type()
except (AttributeError, FieldError):
lhs_type = None
try:
rhs_type = rhs.output_field.get_internal_type()
except (AttributeError, FieldError):
rhs_type = None
if 'DurationField' in {lhs_type, rhs_type} and lhs_type != rhs_type:
return DurationExpression(self.lhs, self.connector, self.rhs).resolve_expression(
query, allow_joins, reuse, summarize, for_save,
)
datetime_fields = {'DateField', 'DateTimeField', 'TimeField'}
if self.connector == self.SUB and lhs_type in datetime_fields and lhs_type == rhs_type:
return TemporalSubtraction(self.lhs, self.rhs).resolve_expression(
query, allow_joins, reuse, summarize, for_save,
)
c = self.copy()
c.is_summary = summarize
c.lhs = lhs
c.rhs = rhs
return c
class DurationExpression(CombinedExpression):
def compile(self, side, compiler, connection):
try:
output = side.output_field
except FieldError:
pass
else:
if output.get_internal_type() == 'DurationField':
sql, params = compiler.compile(side)
return connection.ops.format_for_duration_arithmetic(sql), params
return compiler.compile(side)
def as_sql(self, compiler, connection):
if connection.features.has_native_duration_field:
return super().as_sql(compiler, connection)
connection.ops.check_expression_support(self)
expressions = []
expression_params = []
sql, params = self.compile(self.lhs, compiler, connection)
expressions.append(sql)
expression_params.extend(params)
sql, params = self.compile(self.rhs, compiler, connection)
expressions.append(sql)
expression_params.extend(params)
# order of precedence
expression_wrapper = '(%s)'
sql = connection.ops.combine_duration_expression(self.connector, expressions)
return expression_wrapper % sql, expression_params
def as_sqlite(self, compiler, connection, **extra_context):
sql, params = self.as_sql(compiler, connection, **extra_context)
if self.connector in {Combinable.MUL, Combinable.DIV}:
try:
lhs_type = self.lhs.output_field.get_internal_type()
rhs_type = self.rhs.output_field.get_internal_type()
except (AttributeError, FieldError):
pass
else:
allowed_fields = {
'DecimalField', 'DurationField', 'FloatField', 'IntegerField',
}
if lhs_type not in allowed_fields or rhs_type not in allowed_fields:
raise DatabaseError(
f'Invalid arguments for operator {self.connector}.'
)
return sql, params
class TemporalSubtraction(CombinedExpression):
output_field = fields.DurationField()
def __init__(self, lhs, rhs):
super().__init__(lhs, self.SUB, rhs)
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
lhs = compiler.compile(self.lhs)
rhs = compiler.compile(self.rhs)
return connection.ops.subtract_temporals(self.lhs.output_field.get_internal_type(), lhs, rhs)
@deconstructible(path='django.db.models.F')
class F(Combinable):
"""An object capable of resolving references to existing query objects."""
def __init__(self, name):
"""
Arguments:
* name: the name of the field this expression references
"""
self.name = name
def __repr__(self):
return "{}({})".format(self.__class__.__name__, self.name)
def resolve_expression(self, query=None, allow_joins=True, reuse=None,
summarize=False, for_save=False):
return query.resolve_ref(self.name, allow_joins, reuse, summarize)
def asc(self, **kwargs):
return OrderBy(self, **kwargs)
def desc(self, **kwargs):
return OrderBy(self, descending=True, **kwargs)
def __eq__(self, other):
return self.__class__ == other.__class__ and self.name == other.name
def __hash__(self):
return hash(self.name)
class ResolvedOuterRef(F):
"""
An object that contains a reference to an outer query.
In this case, the reference to the outer query has been resolved because
the inner query has been used as a subquery.
"""
contains_aggregate = False
def as_sql(self, *args, **kwargs):
raise ValueError(
'This queryset contains a reference to an outer query and may '
'only be used in a subquery.'
)
def resolve_expression(self, *args, **kwargs):
col = super().resolve_expression(*args, **kwargs)
# FIXME: Rename possibly_multivalued to multivalued and fix detection
# for non-multivalued JOINs (e.g. foreign key fields). This should take
# into account only many-to-many and one-to-many relationships.
col.possibly_multivalued = LOOKUP_SEP in self.name
return col
def relabeled_clone(self, relabels):
return self
def get_group_by_cols(self, alias=None):
return []
class OuterRef(F):
contains_aggregate = False
def resolve_expression(self, *args, **kwargs):
if isinstance(self.name, self.__class__):
return self.name
return ResolvedOuterRef(self.name)
def relabeled_clone(self, relabels):
return self
class Func(SQLiteNumericMixin, Expression):
"""An SQL function call."""
function = None
template = '%(function)s(%(expressions)s)'
arg_joiner = ', '
arity = None # The number of arguments the function accepts.
def __init__(self, *expressions, output_field=None, **extra):
if self.arity is not None and len(expressions) != self.arity:
raise TypeError(
"'%s' takes exactly %s %s (%s given)" % (
self.__class__.__name__,
self.arity,
"argument" if self.arity == 1 else "arguments",
len(expressions),
)
)
super().__init__(output_field=output_field)
self.source_expressions = self._parse_expressions(*expressions)
self.extra = extra
def __repr__(self):
args = self.arg_joiner.join(str(arg) for arg in self.source_expressions)
extra = {**self.extra, **self._get_repr_options()}
if extra:
extra = ', '.join(str(key) + '=' + str(val) for key, val in sorted(extra.items()))
return "{}({}, {})".format(self.__class__.__name__, args, extra)
return "{}({})".format(self.__class__.__name__, args)
def _get_repr_options(self):
"""Return a dict of extra __init__() options to include in the repr."""
return {}
def get_source_expressions(self):
return self.source_expressions
def set_source_expressions(self, exprs):
self.source_expressions = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
for pos, arg in enumerate(c.source_expressions):
c.source_expressions[pos] = arg.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def as_sql(self, compiler, connection, function=None, template=None, arg_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
sql_parts = []
params = []
for arg in self.source_expressions:
try:
arg_sql, arg_params = compiler.compile(arg)
except EmptyResultSet:
empty_result_set_value = getattr(arg, 'empty_result_set_value', NotImplemented)
if empty_result_set_value is NotImplemented:
raise
arg_sql, arg_params = compiler.compile(Value(empty_result_set_value))
sql_parts.append(arg_sql)
params.extend(arg_params)
data = {**self.extra, **extra_context}
# Use the first supplied value in this order: the parameter to this
# method, a value supplied in __init__()'s **extra (the value in
# `data`), or the value defined on the class.
if function is not None:
data['function'] = function
else:
data.setdefault('function', self.function)
template = template or data.get('template', self.template)
arg_joiner = arg_joiner or data.get('arg_joiner', self.arg_joiner)
data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
return template % data, params
def copy(self):
copy = super().copy()
copy.source_expressions = self.source_expressions[:]
copy.extra = self.extra.copy()
return copy
class Value(SQLiteNumericMixin, Expression):
"""Represent a wrapped value as a node within an expression."""
# Provide a default value for `for_save` in order to allow unresolved
# instances to be compiled until a decision is taken in #25425.
for_save = False
def __init__(self, value, output_field=None):
"""
Arguments:
* value: the value this expression represents. The value will be
added into the sql parameter list and properly quoted.
* output_field: an instance of the model field type that this
expression will return, such as IntegerField() or CharField().
"""
super().__init__(output_field=output_field)
self.value = value
def __repr__(self):
return f'{self.__class__.__name__}({self.value!r})'
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
val = self.value
output_field = self._output_field_or_none
if output_field is not None:
if self.for_save:
val = output_field.get_db_prep_save(val, connection=connection)
else:
val = output_field.get_db_prep_value(val, connection=connection)
if hasattr(output_field, 'get_placeholder'):
return output_field.get_placeholder(val, compiler, connection), [val]
if val is None:
# cx_Oracle does not always convert None to the appropriate
# NULL type (like in case expressions using numbers), so we
# use a literal SQL NULL
return 'NULL', []
return '%s', [val]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
c.for_save = for_save
return c
def get_group_by_cols(self, alias=None):
return []
def _resolve_output_field(self):
if isinstance(self.value, str):
return fields.CharField()
if isinstance(self.value, bool):
return fields.BooleanField()
if isinstance(self.value, int):
return fields.IntegerField()
if isinstance(self.value, float):
return fields.FloatField()
if isinstance(self.value, datetime.datetime):
return fields.DateTimeField()
if isinstance(self.value, datetime.date):
return fields.DateField()
if isinstance(self.value, datetime.time):
return fields.TimeField()
if isinstance(self.value, datetime.timedelta):
return fields.DurationField()
if isinstance(self.value, Decimal):
return fields.DecimalField()
if isinstance(self.value, bytes):
return fields.BinaryField()
if isinstance(self.value, UUID):
return fields.UUIDField()
@property
def empty_result_set_value(self):
return self.value
class RawSQL(Expression):
def __init__(self, sql, params, output_field=None):
if output_field is None:
output_field = fields.Field()
self.sql, self.params = sql, params
super().__init__(output_field=output_field)
def __repr__(self):
return "{}({}, {})".format(self.__class__.__name__, self.sql, self.params)
def as_sql(self, compiler, connection):
return '(%s)' % self.sql, self.params
def get_group_by_cols(self, alias=None):
return [self]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
# Resolve parents fields used in raw SQL.
for parent in query.model._meta.get_parent_list():
for parent_field in parent._meta.local_fields:
_, column_name = parent_field.get_attname_column()
if column_name.lower() in self.sql.lower():
query.resolve_ref(parent_field.name, allow_joins, reuse, summarize)
break
return super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
class Star(Expression):
def __repr__(self):
return "'*'"
def as_sql(self, compiler, connection):
return '*', []
class Col(Expression):
contains_column_references = True
possibly_multivalued = False
def __init__(self, alias, target, output_field=None):
if output_field is None:
output_field = target
super().__init__(output_field=output_field)
self.alias, self.target = alias, target
def __repr__(self):
alias, target = self.alias, self.target
identifiers = (alias, str(target)) if alias else (str(target),)
return '{}({})'.format(self.__class__.__name__, ', '.join(identifiers))
def as_sql(self, compiler, connection):
alias, column = self.alias, self.target.column
identifiers = (alias, column) if alias else (column,)
sql = '.'.join(map(compiler.quote_name_unless_alias, identifiers))
return sql, []
def relabeled_clone(self, relabels):
if self.alias is None:
return self
return self.__class__(relabels.get(self.alias, self.alias), self.target, self.output_field)
def get_group_by_cols(self, alias=None):
return [self]
def get_db_converters(self, connection):
if self.target == self.output_field:
return self.output_field.get_db_converters(connection)
return (self.output_field.get_db_converters(connection) +
self.target.get_db_converters(connection))
class Ref(Expression):
"""
Reference to column alias of the query. For example, Ref('sum_cost') in
qs.annotate(sum_cost=Sum('cost')) query.
"""
def __init__(self, refs, source):
super().__init__()
self.refs, self.source = refs, source
def __repr__(self):
return "{}({}, {})".format(self.__class__.__name__, self.refs, self.source)
def get_source_expressions(self):
return [self.source]
def set_source_expressions(self, exprs):
self.source, = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
# The sub-expression `source` has already been resolved, as this is
# just a reference to the name of `source`.
return self
def relabeled_clone(self, relabels):
return self
def as_sql(self, compiler, connection):
return connection.ops.quote_name(self.refs), []
def get_group_by_cols(self, alias=None):
return [self]
class ExpressionList(Func):
"""
An expression containing multiple expressions. Can be used to provide a
list of expressions as an argument to another expression, like a partition
clause.
"""
template = '%(expressions)s'
def __init__(self, *expressions, **extra):
if not expressions:
raise ValueError('%s requires at least one expression.' % self.__class__.__name__)
super().__init__(*expressions, **extra)
def __str__(self):
return self.arg_joiner.join(str(arg) for arg in self.source_expressions)
def as_sqlite(self, compiler, connection, **extra_context):
# Casting to numeric is unnecessary.
return self.as_sql(compiler, connection, **extra_context)
class OrderByList(Func):
template = 'ORDER BY %(expressions)s'
def __init__(self, *expressions, **extra):
expressions = (
(
OrderBy(F(expr[1:]), descending=True)
if isinstance(expr, str) and expr[0] == '-'
else expr
)
for expr in expressions
)
super().__init__(*expressions, **extra)
def as_sql(self, *args, **kwargs):
if not self.source_expressions:
return '', ()
return super().as_sql(*args, **kwargs)
class ExpressionWrapper(SQLiteNumericMixin, Expression):
"""
An expression that can wrap another expression so that it can provide
extra context to the inner expression, such as the output_field.
"""
def __init__(self, expression, output_field):
super().__init__(output_field=output_field)
self.expression = expression
def set_source_expressions(self, exprs):
self.expression = exprs[0]
def get_source_expressions(self):
return [self.expression]
def get_group_by_cols(self, alias=None):
if isinstance(self.expression, Expression):
expression = self.expression.copy()
expression.output_field = self.output_field
return expression.get_group_by_cols(alias=alias)
# For non-expressions e.g. an SQL WHERE clause, the entire
# `expression` must be included in the GROUP BY clause.
return super().get_group_by_cols()
def as_sql(self, compiler, connection):
return compiler.compile(self.expression)
def __repr__(self):
return "{}({})".format(self.__class__.__name__, self.expression)
class When(Expression):
template = 'WHEN %(condition)s THEN %(result)s'
# This isn't a complete conditional expression, must be used in Case().
conditional = False
def __init__(self, condition=None, then=None, **lookups):
if lookups:
if condition is None:
condition, lookups = Q(**lookups), None
elif getattr(condition, 'conditional', False):
condition, lookups = Q(condition, **lookups), None
if condition is None or not getattr(condition, 'conditional', False) or lookups:
raise TypeError(
'When() supports a Q object, a boolean expression, or lookups '
'as a condition.'
)
if isinstance(condition, Q) and not condition:
raise ValueError("An empty Q() can't be used as a When() condition.")
super().__init__(output_field=None)
self.condition = condition
self.result = self._parse_expressions(then)[0]
def __str__(self):
return "WHEN %r THEN %r" % (self.condition, self.result)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
def get_source_expressions(self):
return [self.condition, self.result]
def set_source_expressions(self, exprs):
self.condition, self.result = exprs
def get_source_fields(self):
# We're only interested in the fields of the result expressions.
return [self.result._output_field_or_none]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
if hasattr(c.condition, 'resolve_expression'):
c.condition = c.condition.resolve_expression(query, allow_joins, reuse, summarize, False)
c.result = c.result.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def as_sql(self, compiler, connection, template=None, **extra_context):
connection.ops.check_expression_support(self)
template_params = extra_context
sql_params = []
condition_sql, condition_params = compiler.compile(self.condition)
template_params['condition'] = condition_sql
sql_params.extend(condition_params)
result_sql, result_params = compiler.compile(self.result)
template_params['result'] = result_sql
sql_params.extend(result_params)
template = template or self.template
return template % template_params, sql_params
def get_group_by_cols(self, alias=None):
# This is not a complete expression and cannot be used in GROUP BY.
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
class Case(SQLiteNumericMixin, Expression):
"""
An SQL searched CASE expression:
CASE
WHEN n > 0
THEN 'positive'
WHEN n < 0
THEN 'negative'
ELSE 'zero'
END
"""
template = 'CASE %(cases)s ELSE %(default)s END'
case_joiner = ' '
def __init__(self, *cases, default=None, output_field=None, **extra):
if not all(isinstance(case, When) for case in cases):
raise TypeError("Positional arguments must all be When objects.")
super().__init__(output_field)
self.cases = list(cases)
self.default = self._parse_expressions(default)[0]
self.extra = extra
def __str__(self):
return "CASE %s, ELSE %r" % (', '.join(str(c) for c in self.cases), self.default)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
def get_source_expressions(self):
return self.cases + [self.default]
def set_source_expressions(self, exprs):
*self.cases, self.default = exprs
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
for pos, case in enumerate(c.cases):
c.cases[pos] = case.resolve_expression(query, allow_joins, reuse, summarize, for_save)
c.default = c.default.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def copy(self):
c = super().copy()
c.cases = c.cases[:]
return c
def as_sql(self, compiler, connection, template=None, case_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
if not self.cases:
return compiler.compile(self.default)
template_params = {**self.extra, **extra_context}
case_parts = []
sql_params = []
for case in self.cases:
try:
case_sql, case_params = compiler.compile(case)
except EmptyResultSet:
continue
case_parts.append(case_sql)
sql_params.extend(case_params)
default_sql, default_params = compiler.compile(self.default)
if not case_parts:
return default_sql, default_params
case_joiner = case_joiner or self.case_joiner
template_params['cases'] = case_joiner.join(case_parts)
template_params['default'] = default_sql
sql_params.extend(default_params)
template = template or template_params.get('template', self.template)
sql = template % template_params
if self._output_field_or_none is not None:
sql = connection.ops.unification_cast_sql(self.output_field) % sql
return sql, sql_params
def get_group_by_cols(self, alias=None):
if not self.cases:
return self.default.get_group_by_cols(alias)
return super().get_group_by_cols(alias)
class Subquery(BaseExpression, Combinable):
"""
An explicit subquery. It may contain OuterRef() references to the outer
query which will be resolved when it is applied to that query.
"""
template = '(%(subquery)s)'
contains_aggregate = False
empty_result_set_value = None
def __init__(self, queryset, output_field=None, **extra):
# Allow the usage of both QuerySet and sql.Query objects.
self.query = getattr(queryset, 'query', queryset)
self.extra = extra
super().__init__(output_field)
def get_source_expressions(self):
return [self.query]
def set_source_expressions(self, exprs):
self.query = exprs[0]
def _resolve_output_field(self):
return self.query.output_field
def copy(self):
clone = super().copy()
clone.query = clone.query.clone()
return clone
@property
def external_aliases(self):
return self.query.external_aliases
def get_external_cols(self):
return self.query.get_external_cols()
def as_sql(self, compiler, connection, template=None, query=None, **extra_context):
connection.ops.check_expression_support(self)
template_params = {**self.extra, **extra_context}
query = query or self.query
subquery_sql, sql_params = query.as_sql(compiler, connection)
template_params['subquery'] = subquery_sql[1:-1]
template = template or template_params.get('template', self.template)
sql = template % template_params
return sql, sql_params
def get_group_by_cols(self, alias=None):
# If this expression is referenced by an alias for an explicit GROUP BY
# through values() a reference to this expression and not the
# underlying .query must be returned to ensure external column
# references are not grouped against as well.
if alias:
return [Ref(alias, self)]
return self.query.get_group_by_cols()
class Exists(Subquery):
template = 'EXISTS(%(subquery)s)'
output_field = fields.BooleanField()
def __init__(self, queryset, negated=False, **kwargs):
self.negated = negated
super().__init__(queryset, **kwargs)
def __invert__(self):
clone = self.copy()
clone.negated = not self.negated
return clone
def as_sql(self, compiler, connection, template=None, **extra_context):
query = self.query.exists(using=connection.alias)
sql, params = super().as_sql(
compiler,
connection,
template=template,
query=query,
**extra_context,
)
if self.negated:
sql = 'NOT {}'.format(sql)
return sql, params
def select_format(self, compiler, sql, params):
# Wrap EXISTS() with a CASE WHEN expression if a database backend
# (e.g. Oracle) doesn't support boolean expression in SELECT or GROUP
# BY list.
if not compiler.connection.features.supports_boolean_expr_in_select_clause:
sql = 'CASE WHEN {} THEN 1 ELSE 0 END'.format(sql)
return sql, params
class OrderBy(Expression):
template = '%(expression)s %(ordering)s'
conditional = False
def __init__(self, expression, descending=False, nulls_first=False, nulls_last=False):
if nulls_first and nulls_last:
raise ValueError('nulls_first and nulls_last are mutually exclusive')
self.nulls_first = nulls_first
self.nulls_last = nulls_last
self.descending = descending
if not hasattr(expression, 'resolve_expression'):
raise ValueError('expression must be an expression type')
self.expression = expression
def __repr__(self):
return "{}({}, descending={})".format(
self.__class__.__name__, self.expression, self.descending)
def set_source_expressions(self, exprs):
self.expression = exprs[0]
def get_source_expressions(self):
return [self.expression]
def as_sql(self, compiler, connection, template=None, **extra_context):
template = template or self.template
if connection.features.supports_order_by_nulls_modifier:
if self.nulls_last:
template = '%s NULLS LAST' % template
elif self.nulls_first:
template = '%s NULLS FIRST' % template
else:
if self.nulls_last and not (
self.descending and connection.features.order_by_nulls_first
):
template = '%%(expression)s IS NULL, %s' % template
elif self.nulls_first and not (
not self.descending and connection.features.order_by_nulls_first
):
template = '%%(expression)s IS NOT NULL, %s' % template
connection.ops.check_expression_support(self)
expression_sql, params = compiler.compile(self.expression)
placeholders = {
'expression': expression_sql,
'ordering': 'DESC' if self.descending else 'ASC',
**extra_context,
}
params *= template.count('%(expression)s')
return (template % placeholders).rstrip(), params
def as_oracle(self, compiler, connection):
# Oracle doesn't allow ORDER BY EXISTS() or filters unless it's wrapped
# in a CASE WHEN.
if connection.ops.conditional_expression_supported_in_where_clause(self.expression):
copy = self.copy()
copy.expression = Case(
When(self.expression, then=True),
default=False,
)
return copy.as_sql(compiler, connection)
return self.as_sql(compiler, connection)
def get_group_by_cols(self, alias=None):
cols = []
for source in self.get_source_expressions():
cols.extend(source.get_group_by_cols())
return cols
def reverse_ordering(self):
self.descending = not self.descending
if self.nulls_first or self.nulls_last:
self.nulls_first = not self.nulls_first
self.nulls_last = not self.nulls_last
return self
def asc(self):
self.descending = False
def desc(self):
self.descending = True
class Window(SQLiteNumericMixin, Expression):
template = '%(expression)s OVER (%(window)s)'
# Although the main expression may either be an aggregate or an
# expression with an aggregate function, the GROUP BY that will
# be introduced in the query as a result is not desired.
contains_aggregate = False
contains_over_clause = True
filterable = False
def __init__(self, expression, partition_by=None, order_by=None, frame=None, output_field=None):
self.partition_by = partition_by
self.order_by = order_by
self.frame = frame
if not getattr(expression, 'window_compatible', False):
raise ValueError(
"Expression '%s' isn't compatible with OVER clauses." %
expression.__class__.__name__
)
if self.partition_by is not None:
if not isinstance(self.partition_by, (tuple, list)):
self.partition_by = (self.partition_by,)
self.partition_by = ExpressionList(*self.partition_by)
if self.order_by is not None:
if isinstance(self.order_by, (list, tuple)):
self.order_by = OrderByList(*self.order_by)
elif isinstance(self.order_by, (BaseExpression, str)):
self.order_by = OrderByList(self.order_by)
else:
raise ValueError(
'Window.order_by must be either a string reference to a '
'field, an expression, or a list or tuple of them.'
)
super().__init__(output_field=output_field)
self.source_expression = self._parse_expressions(expression)[0]
def _resolve_output_field(self):
return self.source_expression.output_field
def get_source_expressions(self):
return [self.source_expression, self.partition_by, self.order_by, self.frame]
def set_source_expressions(self, exprs):
self.source_expression, self.partition_by, self.order_by, self.frame = exprs
def as_sql(self, compiler, connection, template=None):
connection.ops.check_expression_support(self)
if not connection.features.supports_over_clause:
raise NotSupportedError('This backend does not support window expressions.')
expr_sql, params = compiler.compile(self.source_expression)
window_sql, window_params = [], []
if self.partition_by is not None:
sql_expr, sql_params = self.partition_by.as_sql(
compiler=compiler, connection=connection,
template='PARTITION BY %(expressions)s',
)
window_sql.append(sql_expr)
window_params.extend(sql_params)
if self.order_by is not None:
order_sql, order_params = compiler.compile(self.order_by)
window_sql.append(order_sql)
window_params.extend(order_params)
if self.frame:
frame_sql, frame_params = compiler.compile(self.frame)
window_sql.append(frame_sql)
window_params.extend(frame_params)
params.extend(window_params)
template = template or self.template
return template % {
'expression': expr_sql,
'window': ' '.join(window_sql).strip()
}, params
def as_sqlite(self, compiler, connection):
if isinstance(self.output_field, fields.DecimalField):
# Casting to numeric must be outside of the window expression.
copy = self.copy()
source_expressions = copy.get_source_expressions()
source_expressions[0].output_field = fields.FloatField()
copy.set_source_expressions(source_expressions)
return super(Window, copy).as_sqlite(compiler, connection)
return self.as_sql(compiler, connection)
def __str__(self):
return '{} OVER ({}{}{})'.format(
str(self.source_expression),
'PARTITION BY ' + str(self.partition_by) if self.partition_by else '',
str(self.order_by or ''),
str(self.frame or ''),
)
def __repr__(self):
return '<%s: %s>' % (self.__class__.__name__, self)
def get_group_by_cols(self, alias=None):
return []
class WindowFrame(Expression):
"""
Model the frame clause in window expressions. There are two types of frame
clauses which are subclasses, however, all processing and validation (by no
means intended to be complete) is done here. Thus, providing an end for a
frame is optional (the default is UNBOUNDED FOLLOWING, which is the last
row in the frame).
"""
template = '%(frame_type)s BETWEEN %(start)s AND %(end)s'
def __init__(self, start=None, end=None):
self.start = Value(start)
self.end = Value(end)
def set_source_expressions(self, exprs):
self.start, self.end = exprs
def get_source_expressions(self):
return [self.start, self.end]
def as_sql(self, compiler, connection):
connection.ops.check_expression_support(self)
start, end = self.window_frame_start_end(connection, self.start.value, self.end.value)
return self.template % {
'frame_type': self.frame_type,
'start': start,
'end': end,
}, []
def __repr__(self):
return '<%s: %s>' % (self.__class__.__name__, self)
def get_group_by_cols(self, alias=None):
return []
def __str__(self):
if self.start.value is not None and self.start.value < 0:
start = '%d %s' % (abs(self.start.value), connection.ops.PRECEDING)
elif self.start.value is not None and self.start.value == 0:
start = connection.ops.CURRENT_ROW
else:
start = connection.ops.UNBOUNDED_PRECEDING
if self.end.value is not None and self.end.value > 0:
end = '%d %s' % (self.end.value, connection.ops.FOLLOWING)
elif self.end.value is not None and self.end.value == 0:
end = connection.ops.CURRENT_ROW
else:
end = connection.ops.UNBOUNDED_FOLLOWING
return self.template % {
'frame_type': self.frame_type,
'start': start,
'end': end,
}
def window_frame_start_end(self, connection, start, end):
raise NotImplementedError('Subclasses must implement window_frame_start_end().')
class RowRange(WindowFrame):
frame_type = 'ROWS'
def window_frame_start_end(self, connection, start, end):
return connection.ops.window_frame_rows_start_end(start, end)
class ValueRange(WindowFrame):
frame_type = 'RANGE'
def window_frame_start_end(self, connection, start, end):
return connection.ops.window_frame_range_start_end(start, end)
|
1bcdde304239f94742cc170090e5a4bec45a27af80ae7f81611a8a9998d29903 | from django.db import models
from django.db.migrations.operations.base import Operation
from django.db.migrations.state import ModelState
from django.db.migrations.utils import field_references, resolve_relation
from django.db.models.options import normalize_together
from django.utils.functional import cached_property
from .fields import (
AddField, AlterField, FieldOperation, RemoveField, RenameField,
)
def _check_for_duplicates(arg_name, objs):
used_vals = set()
for val in objs:
if val in used_vals:
raise ValueError(
"Found duplicate value %s in CreateModel %s argument." % (val, arg_name)
)
used_vals.add(val)
class ModelOperation(Operation):
def __init__(self, name):
self.name = name
@cached_property
def name_lower(self):
return self.name.lower()
def references_model(self, name, app_label):
return name.lower() == self.name_lower
def reduce(self, operation, app_label):
return (
super().reduce(operation, app_label) or
not operation.references_model(self.name, app_label)
)
class CreateModel(ModelOperation):
"""Create a model's table."""
serialization_expand_args = ['fields', 'options', 'managers']
def __init__(self, name, fields, options=None, bases=None, managers=None):
self.fields = fields
self.options = options or {}
self.bases = bases or (models.Model,)
self.managers = managers or []
super().__init__(name)
# Sanity-check that there are no duplicated field names, bases, or
# manager names
_check_for_duplicates('fields', (name for name, _ in self.fields))
_check_for_duplicates('bases', (
base._meta.label_lower if hasattr(base, '_meta') else
base.lower() if isinstance(base, str) else base
for base in self.bases
))
_check_for_duplicates('managers', (name for name, _ in self.managers))
def deconstruct(self):
kwargs = {
'name': self.name,
'fields': self.fields,
}
if self.options:
kwargs['options'] = self.options
if self.bases and self.bases != (models.Model,):
kwargs['bases'] = self.bases
if self.managers and self.managers != [('objects', models.Manager())]:
kwargs['managers'] = self.managers
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.add_model(ModelState(
app_label,
self.name,
list(self.fields),
dict(self.options),
tuple(self.bases),
list(self.managers),
))
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.create_model(model)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = from_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.delete_model(model)
def describe(self):
return "Create %smodel %s" % ("proxy " if self.options.get("proxy", False) else "", self.name)
@property
def migration_name_fragment(self):
return self.name_lower
def references_model(self, name, app_label):
name_lower = name.lower()
if name_lower == self.name_lower:
return True
# Check we didn't inherit from the model
reference_model_tuple = (app_label, name_lower)
for base in self.bases:
if (base is not models.Model and isinstance(base, (models.base.ModelBase, str)) and
resolve_relation(base, app_label) == reference_model_tuple):
return True
# Check we have no FKs/M2Ms with it
for _name, field in self.fields:
if field_references((app_label, self.name_lower), field, reference_model_tuple):
return True
return False
def reduce(self, operation, app_label):
if (isinstance(operation, DeleteModel) and
self.name_lower == operation.name_lower and
not self.options.get("proxy", False)):
return []
elif isinstance(operation, RenameModel) and self.name_lower == operation.old_name_lower:
return [
CreateModel(
operation.new_name,
fields=self.fields,
options=self.options,
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, AlterModelOptions) and self.name_lower == operation.name_lower:
options = {**self.options, **operation.options}
for key in operation.ALTER_OPTION_KEYS:
if key not in operation.options:
options.pop(key, None)
return [
CreateModel(
self.name,
fields=self.fields,
options=options,
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, AlterTogetherOptionOperation) and self.name_lower == operation.name_lower:
return [
CreateModel(
self.name,
fields=self.fields,
options={**self.options, **{operation.option_name: operation.option_value}},
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, AlterOrderWithRespectTo) and self.name_lower == operation.name_lower:
return [
CreateModel(
self.name,
fields=self.fields,
options={**self.options, 'order_with_respect_to': operation.order_with_respect_to},
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, FieldOperation) and self.name_lower == operation.model_name_lower:
if isinstance(operation, AddField):
return [
CreateModel(
self.name,
fields=self.fields + [(operation.name, operation.field)],
options=self.options,
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, AlterField):
return [
CreateModel(
self.name,
fields=[
(n, operation.field if n == operation.name else v)
for n, v in self.fields
],
options=self.options,
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, RemoveField):
options = self.options.copy()
for option_name in ('unique_together', 'index_together'):
option = options.pop(option_name, None)
if option:
option = set(filter(bool, (
tuple(f for f in fields if f != operation.name_lower) for fields in option
)))
if option:
options[option_name] = option
order_with_respect_to = options.get('order_with_respect_to')
if order_with_respect_to == operation.name_lower:
del options['order_with_respect_to']
return [
CreateModel(
self.name,
fields=[
(n, v)
for n, v in self.fields
if n.lower() != operation.name_lower
],
options=options,
bases=self.bases,
managers=self.managers,
),
]
elif isinstance(operation, RenameField):
options = self.options.copy()
for option_name in ('unique_together', 'index_together'):
option = options.get(option_name)
if option:
options[option_name] = {
tuple(operation.new_name if f == operation.old_name else f for f in fields)
for fields in option
}
order_with_respect_to = options.get('order_with_respect_to')
if order_with_respect_to == operation.old_name:
options['order_with_respect_to'] = operation.new_name
return [
CreateModel(
self.name,
fields=[
(operation.new_name if n == operation.old_name else n, v)
for n, v in self.fields
],
options=options,
bases=self.bases,
managers=self.managers,
),
]
return super().reduce(operation, app_label)
class DeleteModel(ModelOperation):
"""Drop a model's table."""
def deconstruct(self):
kwargs = {
'name': self.name,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.remove_model(app_label, self.name_lower)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = from_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.delete_model(model)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.create_model(model)
def references_model(self, name, app_label):
# The deleted model could be referencing the specified model through
# related fields.
return True
def describe(self):
return "Delete model %s" % self.name
@property
def migration_name_fragment(self):
return 'delete_%s' % self.name_lower
class RenameModel(ModelOperation):
"""Rename a model."""
def __init__(self, old_name, new_name):
self.old_name = old_name
self.new_name = new_name
super().__init__(old_name)
@cached_property
def old_name_lower(self):
return self.old_name.lower()
@cached_property
def new_name_lower(self):
return self.new_name.lower()
def deconstruct(self):
kwargs = {
'old_name': self.old_name,
'new_name': self.new_name,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.rename_model(app_label, self.old_name, self.new_name)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
new_model = to_state.apps.get_model(app_label, self.new_name)
if self.allow_migrate_model(schema_editor.connection.alias, new_model):
old_model = from_state.apps.get_model(app_label, self.old_name)
old_db_table = old_model._meta.db_table
new_db_table = new_model._meta.db_table
# Don't alter when a table name is not changed.
if old_db_table == new_db_table:
return
# Move the main table
schema_editor.alter_db_table(new_model, old_db_table, new_db_table)
# Alter the fields pointing to us
for related_object in old_model._meta.related_objects:
if related_object.related_model == old_model:
model = new_model
related_key = (app_label, self.new_name_lower)
else:
model = related_object.related_model
related_key = (
related_object.related_model._meta.app_label,
related_object.related_model._meta.model_name,
)
to_field = to_state.apps.get_model(
*related_key
)._meta.get_field(related_object.field.name)
schema_editor.alter_field(
model,
related_object.field,
to_field,
)
# Rename M2M fields whose name is based on this model's name.
fields = zip(old_model._meta.local_many_to_many, new_model._meta.local_many_to_many)
for (old_field, new_field) in fields:
# Skip self-referential fields as these are renamed above.
if new_field.model == new_field.related_model or not new_field.remote_field.through._meta.auto_created:
continue
# Rename the M2M table that's based on this model's name.
old_m2m_model = old_field.remote_field.through
new_m2m_model = new_field.remote_field.through
schema_editor.alter_db_table(
new_m2m_model,
old_m2m_model._meta.db_table,
new_m2m_model._meta.db_table,
)
# Rename the column in the M2M table that's based on this
# model's name.
schema_editor.alter_field(
new_m2m_model,
old_m2m_model._meta.get_field(old_model._meta.model_name),
new_m2m_model._meta.get_field(new_model._meta.model_name),
)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
self.new_name_lower, self.old_name_lower = self.old_name_lower, self.new_name_lower
self.new_name, self.old_name = self.old_name, self.new_name
self.database_forwards(app_label, schema_editor, from_state, to_state)
self.new_name_lower, self.old_name_lower = self.old_name_lower, self.new_name_lower
self.new_name, self.old_name = self.old_name, self.new_name
def references_model(self, name, app_label):
return (
name.lower() == self.old_name_lower or
name.lower() == self.new_name_lower
)
def describe(self):
return "Rename model %s to %s" % (self.old_name, self.new_name)
@property
def migration_name_fragment(self):
return 'rename_%s_%s' % (self.old_name_lower, self.new_name_lower)
def reduce(self, operation, app_label):
if (isinstance(operation, RenameModel) and
self.new_name_lower == operation.old_name_lower):
return [
RenameModel(
self.old_name,
operation.new_name,
),
]
# Skip `ModelOperation.reduce` as we want to run `references_model`
# against self.new_name.
return (
super(ModelOperation, self).reduce(operation, app_label) or
not operation.references_model(self.new_name, app_label)
)
class ModelOptionOperation(ModelOperation):
def reduce(self, operation, app_label):
if isinstance(operation, (self.__class__, DeleteModel)) and self.name_lower == operation.name_lower:
return [operation]
return super().reduce(operation, app_label)
class AlterModelTable(ModelOptionOperation):
"""Rename a model's table."""
def __init__(self, name, table):
self.table = table
super().__init__(name)
def deconstruct(self):
kwargs = {
'name': self.name,
'table': self.table,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.alter_model_options(app_label, self.name_lower, {'db_table': self.table})
def database_forwards(self, app_label, schema_editor, from_state, to_state):
new_model = to_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, new_model):
old_model = from_state.apps.get_model(app_label, self.name)
schema_editor.alter_db_table(
new_model,
old_model._meta.db_table,
new_model._meta.db_table,
)
# Rename M2M fields whose name is based on this model's db_table
for (old_field, new_field) in zip(old_model._meta.local_many_to_many, new_model._meta.local_many_to_many):
if new_field.remote_field.through._meta.auto_created:
schema_editor.alter_db_table(
new_field.remote_field.through,
old_field.remote_field.through._meta.db_table,
new_field.remote_field.through._meta.db_table,
)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
return self.database_forwards(app_label, schema_editor, from_state, to_state)
def describe(self):
return "Rename table for %s to %s" % (
self.name,
self.table if self.table is not None else "(default)"
)
@property
def migration_name_fragment(self):
return 'alter_%s_table' % self.name_lower
class AlterTogetherOptionOperation(ModelOptionOperation):
option_name = None
def __init__(self, name, option_value):
if option_value:
option_value = set(normalize_together(option_value))
setattr(self, self.option_name, option_value)
super().__init__(name)
@cached_property
def option_value(self):
return getattr(self, self.option_name)
def deconstruct(self):
kwargs = {
'name': self.name,
self.option_name: self.option_value,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.alter_model_options(
app_label,
self.name_lower,
{self.option_name: self.option_value},
)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
new_model = to_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, new_model):
old_model = from_state.apps.get_model(app_label, self.name)
alter_together = getattr(schema_editor, 'alter_%s' % self.option_name)
alter_together(
new_model,
getattr(old_model._meta, self.option_name, set()),
getattr(new_model._meta, self.option_name, set()),
)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
return self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_field(self, model_name, name, app_label):
return (
self.references_model(model_name, app_label) and
(
not self.option_value or
any((name in fields) for fields in self.option_value)
)
)
def describe(self):
return "Alter %s for %s (%s constraint(s))" % (self.option_name, self.name, len(self.option_value or ''))
@property
def migration_name_fragment(self):
return 'alter_%s_%s' % (self.name_lower, self.option_name)
class AlterUniqueTogether(AlterTogetherOptionOperation):
"""
Change the value of unique_together to the target one.
Input value of unique_together must be a set of tuples.
"""
option_name = 'unique_together'
def __init__(self, name, unique_together):
super().__init__(name, unique_together)
class AlterIndexTogether(AlterTogetherOptionOperation):
"""
Change the value of index_together to the target one.
Input value of index_together must be a set of tuples.
"""
option_name = "index_together"
def __init__(self, name, index_together):
super().__init__(name, index_together)
class AlterOrderWithRespectTo(ModelOptionOperation):
"""Represent a change with the order_with_respect_to option."""
option_name = 'order_with_respect_to'
def __init__(self, name, order_with_respect_to):
self.order_with_respect_to = order_with_respect_to
super().__init__(name)
def deconstruct(self):
kwargs = {
'name': self.name,
'order_with_respect_to': self.order_with_respect_to,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.alter_model_options(
app_label,
self.name_lower,
{self.option_name: self.order_with_respect_to},
)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
to_model = to_state.apps.get_model(app_label, self.name)
if self.allow_migrate_model(schema_editor.connection.alias, to_model):
from_model = from_state.apps.get_model(app_label, self.name)
# Remove a field if we need to
if from_model._meta.order_with_respect_to and not to_model._meta.order_with_respect_to:
schema_editor.remove_field(from_model, from_model._meta.get_field("_order"))
# Add a field if we need to (altering the column is untouched as
# it's likely a rename)
elif to_model._meta.order_with_respect_to and not from_model._meta.order_with_respect_to:
field = to_model._meta.get_field("_order")
if not field.has_default():
field.default = 0
schema_editor.add_field(
from_model,
field,
)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_field(self, model_name, name, app_label):
return (
self.references_model(model_name, app_label) and
(
self.order_with_respect_to is None or
name == self.order_with_respect_to
)
)
def describe(self):
return "Set order_with_respect_to on %s to %s" % (self.name, self.order_with_respect_to)
@property
def migration_name_fragment(self):
return 'alter_%s_order_with_respect_to' % self.name_lower
class AlterModelOptions(ModelOptionOperation):
"""
Set new model options that don't directly affect the database schema
(like verbose_name, permissions, ordering). Python code in migrations
may still need them.
"""
# Model options we want to compare and preserve in an AlterModelOptions op
ALTER_OPTION_KEYS = [
"base_manager_name",
"default_manager_name",
"default_related_name",
"get_latest_by",
"managed",
"ordering",
"permissions",
"default_permissions",
"select_on_save",
"verbose_name",
"verbose_name_plural",
]
def __init__(self, name, options):
self.options = options
super().__init__(name)
def deconstruct(self):
kwargs = {
'name': self.name,
'options': self.options,
}
return (
self.__class__.__qualname__,
[],
kwargs
)
def state_forwards(self, app_label, state):
state.alter_model_options(
app_label,
self.name_lower,
self.options,
self.ALTER_OPTION_KEYS,
)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
pass
def database_backwards(self, app_label, schema_editor, from_state, to_state):
pass
def describe(self):
return "Change Meta options on %s" % self.name
@property
def migration_name_fragment(self):
return 'alter_%s_options' % self.name_lower
class AlterModelManagers(ModelOptionOperation):
"""Alter the model's managers."""
serialization_expand_args = ['managers']
def __init__(self, name, managers):
self.managers = managers
super().__init__(name)
def deconstruct(self):
return (
self.__class__.__qualname__,
[self.name, self.managers],
{}
)
def state_forwards(self, app_label, state):
state.alter_model_managers(app_label, self.name_lower, self.managers)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
pass
def database_backwards(self, app_label, schema_editor, from_state, to_state):
pass
def describe(self):
return "Change managers on %s" % self.name
@property
def migration_name_fragment(self):
return 'alter_%s_managers' % self.name_lower
class IndexOperation(Operation):
option_name = 'indexes'
@cached_property
def model_name_lower(self):
return self.model_name.lower()
class AddIndex(IndexOperation):
"""Add an index on a model."""
def __init__(self, model_name, index):
self.model_name = model_name
if not index.name:
raise ValueError(
"Indexes passed to AddIndex operations require a name "
"argument. %r doesn't have one." % index
)
self.index = index
def state_forwards(self, app_label, state):
state.add_index(app_label, self.model_name_lower, self.index)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.add_index(model, self.index)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = from_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.remove_index(model, self.index)
def deconstruct(self):
kwargs = {
'model_name': self.model_name,
'index': self.index,
}
return (
self.__class__.__qualname__,
[],
kwargs,
)
def describe(self):
if self.index.expressions:
return 'Create index %s on %s on model %s' % (
self.index.name,
', '.join([str(expression) for expression in self.index.expressions]),
self.model_name,
)
return 'Create index %s on field(s) %s of model %s' % (
self.index.name,
', '.join(self.index.fields),
self.model_name,
)
@property
def migration_name_fragment(self):
return '%s_%s' % (self.model_name_lower, self.index.name.lower())
class RemoveIndex(IndexOperation):
"""Remove an index from a model."""
def __init__(self, model_name, name):
self.model_name = model_name
self.name = name
def state_forwards(self, app_label, state):
state.remove_index(app_label, self.model_name_lower, self.name)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = from_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
from_model_state = from_state.models[app_label, self.model_name_lower]
index = from_model_state.get_index_by_name(self.name)
schema_editor.remove_index(model, index)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
to_model_state = to_state.models[app_label, self.model_name_lower]
index = to_model_state.get_index_by_name(self.name)
schema_editor.add_index(model, index)
def deconstruct(self):
kwargs = {
'model_name': self.model_name,
'name': self.name,
}
return (
self.__class__.__qualname__,
[],
kwargs,
)
def describe(self):
return 'Remove index %s from %s' % (self.name, self.model_name)
@property
def migration_name_fragment(self):
return 'remove_%s_%s' % (self.model_name_lower, self.name.lower())
class AddConstraint(IndexOperation):
option_name = 'constraints'
def __init__(self, model_name, constraint):
self.model_name = model_name
self.constraint = constraint
def state_forwards(self, app_label, state):
state.add_constraint(app_label, self.model_name_lower, self.constraint)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.add_constraint(model, self.constraint)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.remove_constraint(model, self.constraint)
def deconstruct(self):
return self.__class__.__name__, [], {
'model_name': self.model_name,
'constraint': self.constraint,
}
def describe(self):
return 'Create constraint %s on model %s' % (self.constraint.name, self.model_name)
@property
def migration_name_fragment(self):
return '%s_%s' % (self.model_name_lower, self.constraint.name.lower())
class RemoveConstraint(IndexOperation):
option_name = 'constraints'
def __init__(self, model_name, name):
self.model_name = model_name
self.name = name
def state_forwards(self, app_label, state):
state.remove_constraint(app_label, self.model_name_lower, self.name)
def database_forwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
from_model_state = from_state.models[app_label, self.model_name_lower]
constraint = from_model_state.get_constraint_by_name(self.name)
schema_editor.remove_constraint(model, constraint)
def database_backwards(self, app_label, schema_editor, from_state, to_state):
model = to_state.apps.get_model(app_label, self.model_name)
if self.allow_migrate_model(schema_editor.connection.alias, model):
to_model_state = to_state.models[app_label, self.model_name_lower]
constraint = to_model_state.get_constraint_by_name(self.name)
schema_editor.add_constraint(model, constraint)
def deconstruct(self):
return self.__class__.__name__, [], {
'model_name': self.model_name,
'name': self.name,
}
def describe(self):
return 'Remove constraint %s from model %s' % (self.name, self.model_name)
@property
def migration_name_fragment(self):
return 'remove_%s_%s' % (self.model_name_lower, self.name.lower())
|
6fc72f39ca5bbe2706188770af7218995e41fc6b59f78413ff8a942d88fbb106 | """
Accessors for related objects.
When a field defines a relation between two models, each model class provides
an attribute to access related instances of the other model class (unless the
reverse accessor has been disabled with related_name='+').
Accessors are implemented as descriptors in order to customize access and
assignment. This module defines the descriptor classes.
Forward accessors follow foreign keys. Reverse accessors trace them back. For
example, with the following models::
class Parent(Model):
pass
class Child(Model):
parent = ForeignKey(Parent, related_name='children')
``child.parent`` is a forward many-to-one relation. ``parent.children`` is a
reverse many-to-one relation.
There are three types of relations (many-to-one, one-to-one, and many-to-many)
and two directions (forward and reverse) for a total of six combinations.
1. Related instance on the forward side of a many-to-one relation:
``ForwardManyToOneDescriptor``.
Uniqueness of foreign key values is irrelevant to accessing the related
instance, making the many-to-one and one-to-one cases identical as far as
the descriptor is concerned. The constraint is checked upstream (unicity
validation in forms) or downstream (unique indexes in the database).
2. Related instance on the forward side of a one-to-one
relation: ``ForwardOneToOneDescriptor``.
It avoids querying the database when accessing the parent link field in
a multi-table inheritance scenario.
3. Related instance on the reverse side of a one-to-one relation:
``ReverseOneToOneDescriptor``.
One-to-one relations are asymmetrical, despite the apparent symmetry of the
name, because they're implemented in the database with a foreign key from
one table to another. As a consequence ``ReverseOneToOneDescriptor`` is
slightly different from ``ForwardManyToOneDescriptor``.
4. Related objects manager for related instances on the reverse side of a
many-to-one relation: ``ReverseManyToOneDescriptor``.
Unlike the previous two classes, this one provides access to a collection
of objects. It returns a manager rather than an instance.
5. Related objects manager for related instances on the forward or reverse
sides of a many-to-many relation: ``ManyToManyDescriptor``.
Many-to-many relations are symmetrical. The syntax of Django models
requires declaring them on one side but that's an implementation detail.
They could be declared on the other side without any change in behavior.
Therefore the forward and reverse descriptors can be the same.
If you're looking for ``ForwardManyToManyDescriptor`` or
``ReverseManyToManyDescriptor``, use ``ManyToManyDescriptor`` instead.
"""
from django.core.exceptions import FieldError
from django.db import connections, router, transaction
from django.db.models import Q, signals
from django.db.models.query import QuerySet
from django.db.models.query_utils import DeferredAttribute
from django.db.models.utils import resolve_callables
from django.utils.functional import cached_property
class ForeignKeyDeferredAttribute(DeferredAttribute):
def __set__(self, instance, value):
if instance.__dict__.get(self.field.attname) != value and self.field.is_cached(instance):
self.field.delete_cached_value(instance)
instance.__dict__[self.field.attname] = value
class ForwardManyToOneDescriptor:
"""
Accessor to the related object on the forward side of a many-to-one or
one-to-one (via ForwardOneToOneDescriptor subclass) relation.
In the example::
class Child(Model):
parent = ForeignKey(Parent, related_name='children')
``Child.parent`` is a ``ForwardManyToOneDescriptor`` instance.
"""
def __init__(self, field_with_rel):
self.field = field_with_rel
@cached_property
def RelatedObjectDoesNotExist(self):
# The exception can't be created at initialization time since the
# related model might not be resolved yet; `self.field.model` might
# still be a string model reference.
return type(
'RelatedObjectDoesNotExist',
(self.field.remote_field.model.DoesNotExist, AttributeError), {
'__module__': self.field.model.__module__,
'__qualname__': '%s.%s.RelatedObjectDoesNotExist' % (
self.field.model.__qualname__,
self.field.name,
),
}
)
def is_cached(self, instance):
return self.field.is_cached(instance)
def get_queryset(self, **hints):
return self.field.remote_field.model._base_manager.db_manager(hints=hints).all()
def get_prefetch_queryset(self, instances, queryset=None):
if queryset is None:
queryset = self.get_queryset()
queryset._add_hints(instance=instances[0])
rel_obj_attr = self.field.get_foreign_related_value
instance_attr = self.field.get_local_related_value
instances_dict = {instance_attr(inst): inst for inst in instances}
related_field = self.field.foreign_related_fields[0]
remote_field = self.field.remote_field
# FIXME: This will need to be revisited when we introduce support for
# composite fields. In the meantime we take this practical approach to
# solve a regression on 1.6 when the reverse manager in hidden
# (related_name ends with a '+'). Refs #21410.
# The check for len(...) == 1 is a special case that allows the query
# to be join-less and smaller. Refs #21760.
if remote_field.is_hidden() or len(self.field.foreign_related_fields) == 1:
query = {'%s__in' % related_field.name: {instance_attr(inst)[0] for inst in instances}}
else:
query = {'%s__in' % self.field.related_query_name(): instances}
queryset = queryset.filter(**query)
# Since we're going to assign directly in the cache,
# we must manage the reverse relation cache manually.
if not remote_field.multiple:
for rel_obj in queryset:
instance = instances_dict[rel_obj_attr(rel_obj)]
remote_field.set_cached_value(rel_obj, instance)
return queryset, rel_obj_attr, instance_attr, True, self.field.get_cache_name(), False
def get_object(self, instance):
qs = self.get_queryset(instance=instance)
# Assuming the database enforces foreign keys, this won't fail.
return qs.get(self.field.get_reverse_related_filter(instance))
def __get__(self, instance, cls=None):
"""
Get the related instance through the forward relation.
With the example above, when getting ``child.parent``:
- ``self`` is the descriptor managing the ``parent`` attribute
- ``instance`` is the ``child`` instance
- ``cls`` is the ``Child`` class (we don't need it)
"""
if instance is None:
return self
# The related instance is loaded from the database and then cached
# by the field on the model instance state. It can also be pre-cached
# by the reverse accessor (ReverseOneToOneDescriptor).
try:
rel_obj = self.field.get_cached_value(instance)
except KeyError:
has_value = None not in self.field.get_local_related_value(instance)
ancestor_link = instance._meta.get_ancestor_link(self.field.model) if has_value else None
if ancestor_link and ancestor_link.is_cached(instance):
# An ancestor link will exist if this field is defined on a
# multi-table inheritance parent of the instance's class.
ancestor = ancestor_link.get_cached_value(instance)
# The value might be cached on an ancestor if the instance
# originated from walking down the inheritance chain.
rel_obj = self.field.get_cached_value(ancestor, default=None)
else:
rel_obj = None
if rel_obj is None and has_value:
rel_obj = self.get_object(instance)
remote_field = self.field.remote_field
# If this is a one-to-one relation, set the reverse accessor
# cache on the related object to the current instance to avoid
# an extra SQL query if it's accessed later on.
if not remote_field.multiple:
remote_field.set_cached_value(rel_obj, instance)
self.field.set_cached_value(instance, rel_obj)
if rel_obj is None and not self.field.null:
raise self.RelatedObjectDoesNotExist(
"%s has no %s." % (self.field.model.__name__, self.field.name)
)
else:
return rel_obj
def __set__(self, instance, value):
"""
Set the related instance through the forward relation.
With the example above, when setting ``child.parent = parent``:
- ``self`` is the descriptor managing the ``parent`` attribute
- ``instance`` is the ``child`` instance
- ``value`` is the ``parent`` instance on the right of the equal sign
"""
# An object must be an instance of the related class.
if value is not None and not isinstance(value, self.field.remote_field.model._meta.concrete_model):
raise ValueError(
'Cannot assign "%r": "%s.%s" must be a "%s" instance.' % (
value,
instance._meta.object_name,
self.field.name,
self.field.remote_field.model._meta.object_name,
)
)
elif value is not None:
if instance._state.db is None:
instance._state.db = router.db_for_write(instance.__class__, instance=value)
if value._state.db is None:
value._state.db = router.db_for_write(value.__class__, instance=instance)
if not router.allow_relation(value, instance):
raise ValueError('Cannot assign "%r": the current database router prevents this relation.' % value)
remote_field = self.field.remote_field
# If we're setting the value of a OneToOneField to None, we need to clear
# out the cache on any old related object. Otherwise, deleting the
# previously-related object will also cause this object to be deleted,
# which is wrong.
if value is None:
# Look up the previously-related object, which may still be available
# since we've not yet cleared out the related field.
# Use the cache directly, instead of the accessor; if we haven't
# populated the cache, then we don't care - we're only accessing
# the object to invalidate the accessor cache, so there's no
# need to populate the cache just to expire it again.
related = self.field.get_cached_value(instance, default=None)
# If we've got an old related object, we need to clear out its
# cache. This cache also might not exist if the related object
# hasn't been accessed yet.
if related is not None:
remote_field.set_cached_value(related, None)
for lh_field, rh_field in self.field.related_fields:
setattr(instance, lh_field.attname, None)
# Set the values of the related field.
else:
for lh_field, rh_field in self.field.related_fields:
setattr(instance, lh_field.attname, getattr(value, rh_field.attname))
# Set the related instance cache used by __get__ to avoid an SQL query
# when accessing the attribute we just set.
self.field.set_cached_value(instance, value)
# If this is a one-to-one relation, set the reverse accessor cache on
# the related object to the current instance to avoid an extra SQL
# query if it's accessed later on.
if value is not None and not remote_field.multiple:
remote_field.set_cached_value(value, instance)
def __reduce__(self):
"""
Pickling should return the instance attached by self.field on the
model, not a new copy of that descriptor. Use getattr() to retrieve
the instance directly from the model.
"""
return getattr, (self.field.model, self.field.name)
class ForwardOneToOneDescriptor(ForwardManyToOneDescriptor):
"""
Accessor to the related object on the forward side of a one-to-one relation.
In the example::
class Restaurant(Model):
place = OneToOneField(Place, related_name='restaurant')
``Restaurant.place`` is a ``ForwardOneToOneDescriptor`` instance.
"""
def get_object(self, instance):
if self.field.remote_field.parent_link:
deferred = instance.get_deferred_fields()
# Because it's a parent link, all the data is available in the
# instance, so populate the parent model with this data.
rel_model = self.field.remote_field.model
fields = [field.attname for field in rel_model._meta.concrete_fields]
# If any of the related model's fields are deferred, fallback to
# fetching all fields from the related model. This avoids a query
# on the related model for every deferred field.
if not any(field in fields for field in deferred):
kwargs = {field: getattr(instance, field) for field in fields}
obj = rel_model(**kwargs)
obj._state.adding = instance._state.adding
obj._state.db = instance._state.db
return obj
return super().get_object(instance)
def __set__(self, instance, value):
super().__set__(instance, value)
# If the primary key is a link to a parent model and a parent instance
# is being set, update the value of the inherited pk(s).
if self.field.primary_key and self.field.remote_field.parent_link:
opts = instance._meta
# Inherited primary key fields from this object's base classes.
inherited_pk_fields = [
field for field in opts.concrete_fields
if field.primary_key and field.remote_field
]
for field in inherited_pk_fields:
rel_model_pk_name = field.remote_field.model._meta.pk.attname
raw_value = getattr(value, rel_model_pk_name) if value is not None else None
setattr(instance, rel_model_pk_name, raw_value)
class ReverseOneToOneDescriptor:
"""
Accessor to the related object on the reverse side of a one-to-one
relation.
In the example::
class Restaurant(Model):
place = OneToOneField(Place, related_name='restaurant')
``Place.restaurant`` is a ``ReverseOneToOneDescriptor`` instance.
"""
def __init__(self, related):
# Following the example above, `related` is an instance of OneToOneRel
# which represents the reverse restaurant field (place.restaurant).
self.related = related
@cached_property
def RelatedObjectDoesNotExist(self):
# The exception isn't created at initialization time for the sake of
# consistency with `ForwardManyToOneDescriptor`.
return type(
'RelatedObjectDoesNotExist',
(self.related.related_model.DoesNotExist, AttributeError), {
'__module__': self.related.model.__module__,
'__qualname__': '%s.%s.RelatedObjectDoesNotExist' % (
self.related.model.__qualname__,
self.related.name,
)
},
)
def is_cached(self, instance):
return self.related.is_cached(instance)
def get_queryset(self, **hints):
return self.related.related_model._base_manager.db_manager(hints=hints).all()
def get_prefetch_queryset(self, instances, queryset=None):
if queryset is None:
queryset = self.get_queryset()
queryset._add_hints(instance=instances[0])
rel_obj_attr = self.related.field.get_local_related_value
instance_attr = self.related.field.get_foreign_related_value
instances_dict = {instance_attr(inst): inst for inst in instances}
query = {'%s__in' % self.related.field.name: instances}
queryset = queryset.filter(**query)
# Since we're going to assign directly in the cache,
# we must manage the reverse relation cache manually.
for rel_obj in queryset:
instance = instances_dict[rel_obj_attr(rel_obj)]
self.related.field.set_cached_value(rel_obj, instance)
return queryset, rel_obj_attr, instance_attr, True, self.related.get_cache_name(), False
def __get__(self, instance, cls=None):
"""
Get the related instance through the reverse relation.
With the example above, when getting ``place.restaurant``:
- ``self`` is the descriptor managing the ``restaurant`` attribute
- ``instance`` is the ``place`` instance
- ``cls`` is the ``Place`` class (unused)
Keep in mind that ``Restaurant`` holds the foreign key to ``Place``.
"""
if instance is None:
return self
# The related instance is loaded from the database and then cached
# by the field on the model instance state. It can also be pre-cached
# by the forward accessor (ForwardManyToOneDescriptor).
try:
rel_obj = self.related.get_cached_value(instance)
except KeyError:
related_pk = instance.pk
if related_pk is None:
rel_obj = None
else:
filter_args = self.related.field.get_forward_related_filter(instance)
try:
rel_obj = self.get_queryset(instance=instance).get(**filter_args)
except self.related.related_model.DoesNotExist:
rel_obj = None
else:
# Set the forward accessor cache on the related object to
# the current instance to avoid an extra SQL query if it's
# accessed later on.
self.related.field.set_cached_value(rel_obj, instance)
self.related.set_cached_value(instance, rel_obj)
if rel_obj is None:
raise self.RelatedObjectDoesNotExist(
"%s has no %s." % (
instance.__class__.__name__,
self.related.get_accessor_name()
)
)
else:
return rel_obj
def __set__(self, instance, value):
"""
Set the related instance through the reverse relation.
With the example above, when setting ``place.restaurant = restaurant``:
- ``self`` is the descriptor managing the ``restaurant`` attribute
- ``instance`` is the ``place`` instance
- ``value`` is the ``restaurant`` instance on the right of the equal sign
Keep in mind that ``Restaurant`` holds the foreign key to ``Place``.
"""
# The similarity of the code below to the code in
# ForwardManyToOneDescriptor is annoying, but there's a bunch
# of small differences that would make a common base class convoluted.
if value is None:
# Update the cached related instance (if any) & clear the cache.
# Following the example above, this would be the cached
# ``restaurant`` instance (if any).
rel_obj = self.related.get_cached_value(instance, default=None)
if rel_obj is not None:
# Remove the ``restaurant`` instance from the ``place``
# instance cache.
self.related.delete_cached_value(instance)
# Set the ``place`` field on the ``restaurant``
# instance to None.
setattr(rel_obj, self.related.field.name, None)
elif not isinstance(value, self.related.related_model):
# An object must be an instance of the related class.
raise ValueError(
'Cannot assign "%r": "%s.%s" must be a "%s" instance.' % (
value,
instance._meta.object_name,
self.related.get_accessor_name(),
self.related.related_model._meta.object_name,
)
)
else:
if instance._state.db is None:
instance._state.db = router.db_for_write(instance.__class__, instance=value)
if value._state.db is None:
value._state.db = router.db_for_write(value.__class__, instance=instance)
if not router.allow_relation(value, instance):
raise ValueError('Cannot assign "%r": the current database router prevents this relation.' % value)
related_pk = tuple(getattr(instance, field.attname) for field in self.related.field.foreign_related_fields)
# Set the value of the related field to the value of the related object's related field
for index, field in enumerate(self.related.field.local_related_fields):
setattr(value, field.attname, related_pk[index])
# Set the related instance cache used by __get__ to avoid an SQL query
# when accessing the attribute we just set.
self.related.set_cached_value(instance, value)
# Set the forward accessor cache on the related object to the current
# instance to avoid an extra SQL query if it's accessed later on.
self.related.field.set_cached_value(value, instance)
def __reduce__(self):
# Same purpose as ForwardManyToOneDescriptor.__reduce__().
return getattr, (self.related.model, self.related.name)
class ReverseManyToOneDescriptor:
"""
Accessor to the related objects manager on the reverse side of a
many-to-one relation.
In the example::
class Child(Model):
parent = ForeignKey(Parent, related_name='children')
``Parent.children`` is a ``ReverseManyToOneDescriptor`` instance.
Most of the implementation is delegated to a dynamically defined manager
class built by ``create_forward_many_to_many_manager()`` defined below.
"""
def __init__(self, rel):
self.rel = rel
self.field = rel.field
@cached_property
def related_manager_cache_key(self):
# Being able to access the manager instance precludes it from being
# hidden. The rel's accessor name is used to allow multiple managers
# to the same model to coexist. e.g. post.attached_comment_set and
# post.attached_link_set are separately cached.
return self.rel.get_cache_name()
@cached_property
def related_manager_cls(self):
related_model = self.rel.related_model
return create_reverse_many_to_one_manager(
related_model._default_manager.__class__,
self.rel,
)
def __get__(self, instance, cls=None):
"""
Get the related objects through the reverse relation.
With the example above, when getting ``parent.children``:
- ``self`` is the descriptor managing the ``children`` attribute
- ``instance`` is the ``parent`` instance
- ``cls`` is the ``Parent`` class (unused)
"""
if instance is None:
return self
key = self.related_manager_cache_key
instance_cache = instance._state.related_managers_cache
if key not in instance_cache:
instance_cache[key] = self.related_manager_cls(instance)
return instance_cache[key]
def _get_set_deprecation_msg_params(self):
return (
'reverse side of a related set',
self.rel.get_accessor_name(),
)
def __set__(self, instance, value):
raise TypeError(
'Direct assignment to the %s is prohibited. Use %s.set() instead.'
% self._get_set_deprecation_msg_params(),
)
def create_reverse_many_to_one_manager(superclass, rel):
"""
Create a manager for the reverse side of a many-to-one relation.
This manager subclasses another manager, generally the default manager of
the related model, and adds behaviors specific to many-to-one relations.
"""
class RelatedManager(superclass):
def __init__(self, instance):
super().__init__()
self.instance = instance
self.model = rel.related_model
self.field = rel.field
self.core_filters = {self.field.name: instance}
def __call__(self, *, manager):
manager = getattr(self.model, manager)
manager_class = create_reverse_many_to_one_manager(manager.__class__, rel)
return manager_class(self.instance)
do_not_call_in_templates = True
def _apply_rel_filters(self, queryset):
"""
Filter the queryset for the instance this manager is bound to.
"""
db = self._db or router.db_for_read(self.model, instance=self.instance)
empty_strings_as_null = connections[db].features.interprets_empty_strings_as_nulls
queryset._add_hints(instance=self.instance)
if self._db:
queryset = queryset.using(self._db)
queryset._defer_next_filter = True
queryset = queryset.filter(**self.core_filters)
for field in self.field.foreign_related_fields:
val = getattr(self.instance, field.attname)
if val is None or (val == '' and empty_strings_as_null):
return queryset.none()
if self.field.many_to_one:
# Guard against field-like objects such as GenericRelation
# that abuse create_reverse_many_to_one_manager() with reverse
# one-to-many relationships instead and break known related
# objects assignment.
try:
target_field = self.field.target_field
except FieldError:
# The relationship has multiple target fields. Use a tuple
# for related object id.
rel_obj_id = tuple([
getattr(self.instance, target_field.attname)
for target_field in self.field.path_infos[-1].target_fields
])
else:
rel_obj_id = getattr(self.instance, target_field.attname)
queryset._known_related_objects = {self.field: {rel_obj_id: self.instance}}
return queryset
def _remove_prefetched_objects(self):
try:
self.instance._prefetched_objects_cache.pop(self.field.remote_field.get_cache_name())
except (AttributeError, KeyError):
pass # nothing to clear from cache
def get_queryset(self):
try:
return self.instance._prefetched_objects_cache[self.field.remote_field.get_cache_name()]
except (AttributeError, KeyError):
queryset = super().get_queryset()
return self._apply_rel_filters(queryset)
def get_prefetch_queryset(self, instances, queryset=None):
if queryset is None:
queryset = super().get_queryset()
queryset._add_hints(instance=instances[0])
queryset = queryset.using(queryset._db or self._db)
rel_obj_attr = self.field.get_local_related_value
instance_attr = self.field.get_foreign_related_value
instances_dict = {instance_attr(inst): inst for inst in instances}
query = {'%s__in' % self.field.name: instances}
queryset = queryset.filter(**query)
# Since we just bypassed this class' get_queryset(), we must manage
# the reverse relation manually.
for rel_obj in queryset:
instance = instances_dict[rel_obj_attr(rel_obj)]
setattr(rel_obj, self.field.name, instance)
cache_name = self.field.remote_field.get_cache_name()
return queryset, rel_obj_attr, instance_attr, False, cache_name, False
def add(self, *objs, bulk=True):
self._remove_prefetched_objects()
db = router.db_for_write(self.model, instance=self.instance)
def check_and_update_obj(obj):
if not isinstance(obj, self.model):
raise TypeError("'%s' instance expected, got %r" % (
self.model._meta.object_name, obj,
))
setattr(obj, self.field.name, self.instance)
if bulk:
pks = []
for obj in objs:
check_and_update_obj(obj)
if obj._state.adding or obj._state.db != db:
raise ValueError(
"%r instance isn't saved. Use bulk=False or save "
"the object first." % obj
)
pks.append(obj.pk)
self.model._base_manager.using(db).filter(pk__in=pks).update(**{
self.field.name: self.instance,
})
else:
with transaction.atomic(using=db, savepoint=False):
for obj in objs:
check_and_update_obj(obj)
obj.save()
add.alters_data = True
def create(self, **kwargs):
kwargs[self.field.name] = self.instance
db = router.db_for_write(self.model, instance=self.instance)
return super(RelatedManager, self.db_manager(db)).create(**kwargs)
create.alters_data = True
def get_or_create(self, **kwargs):
kwargs[self.field.name] = self.instance
db = router.db_for_write(self.model, instance=self.instance)
return super(RelatedManager, self.db_manager(db)).get_or_create(**kwargs)
get_or_create.alters_data = True
def update_or_create(self, **kwargs):
kwargs[self.field.name] = self.instance
db = router.db_for_write(self.model, instance=self.instance)
return super(RelatedManager, self.db_manager(db)).update_or_create(**kwargs)
update_or_create.alters_data = True
# remove() and clear() are only provided if the ForeignKey can have a value of null.
if rel.field.null:
def remove(self, *objs, bulk=True):
if not objs:
return
val = self.field.get_foreign_related_value(self.instance)
old_ids = set()
for obj in objs:
if not isinstance(obj, self.model):
raise TypeError("'%s' instance expected, got %r" % (
self.model._meta.object_name, obj,
))
# Is obj actually part of this descriptor set?
if self.field.get_local_related_value(obj) == val:
old_ids.add(obj.pk)
else:
raise self.field.remote_field.model.DoesNotExist(
"%r is not related to %r." % (obj, self.instance)
)
self._clear(self.filter(pk__in=old_ids), bulk)
remove.alters_data = True
def clear(self, *, bulk=True):
self._clear(self, bulk)
clear.alters_data = True
def _clear(self, queryset, bulk):
self._remove_prefetched_objects()
db = router.db_for_write(self.model, instance=self.instance)
queryset = queryset.using(db)
if bulk:
# `QuerySet.update()` is intrinsically atomic.
queryset.update(**{self.field.name: None})
else:
with transaction.atomic(using=db, savepoint=False):
for obj in queryset:
setattr(obj, self.field.name, None)
obj.save(update_fields=[self.field.name])
_clear.alters_data = True
def set(self, objs, *, bulk=True, clear=False):
# Force evaluation of `objs` in case it's a queryset whose value
# could be affected by `manager.clear()`. Refs #19816.
objs = tuple(objs)
if self.field.null:
db = router.db_for_write(self.model, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
if clear:
self.clear(bulk=bulk)
self.add(*objs, bulk=bulk)
else:
old_objs = set(self.using(db).all())
new_objs = []
for obj in objs:
if obj in old_objs:
old_objs.remove(obj)
else:
new_objs.append(obj)
self.remove(*old_objs, bulk=bulk)
self.add(*new_objs, bulk=bulk)
else:
self.add(*objs, bulk=bulk)
set.alters_data = True
return RelatedManager
class ManyToManyDescriptor(ReverseManyToOneDescriptor):
"""
Accessor to the related objects manager on the forward and reverse sides of
a many-to-many relation.
In the example::
class Pizza(Model):
toppings = ManyToManyField(Topping, related_name='pizzas')
``Pizza.toppings`` and ``Topping.pizzas`` are ``ManyToManyDescriptor``
instances.
Most of the implementation is delegated to a dynamically defined manager
class built by ``create_forward_many_to_many_manager()`` defined below.
"""
def __init__(self, rel, reverse=False):
super().__init__(rel)
self.reverse = reverse
@property
def through(self):
# through is provided so that you have easy access to the through
# model (Book.authors.through) for inlines, etc. This is done as
# a property to ensure that the fully resolved value is returned.
return self.rel.through
@cached_property
def related_manager_cls(self):
related_model = self.rel.related_model if self.reverse else self.rel.model
return create_forward_many_to_many_manager(
related_model._default_manager.__class__,
self.rel,
reverse=self.reverse,
)
@cached_property
def related_manager_cache_key(self):
if self.reverse:
# Symmetrical M2Ms won't have an accessor name, but should never
# end up in the reverse branch anyway, as the related_name ends up
# being hidden, and no public manager is created.
return self.rel.get_cache_name()
else:
# For forward managers, defer to the field name.
return self.field.get_cache_name()
def _get_set_deprecation_msg_params(self):
return (
'%s side of a many-to-many set' % ('reverse' if self.reverse else 'forward'),
self.rel.get_accessor_name() if self.reverse else self.field.name,
)
def create_forward_many_to_many_manager(superclass, rel, reverse):
"""
Create a manager for the either side of a many-to-many relation.
This manager subclasses another manager, generally the default manager of
the related model, and adds behaviors specific to many-to-many relations.
"""
class ManyRelatedManager(superclass):
def __init__(self, instance=None):
super().__init__()
self.instance = instance
if not reverse:
self.model = rel.model
self.query_field_name = rel.field.related_query_name()
self.prefetch_cache_name = rel.field.name
self.source_field_name = rel.field.m2m_field_name()
self.target_field_name = rel.field.m2m_reverse_field_name()
self.symmetrical = rel.symmetrical
else:
self.model = rel.related_model
self.query_field_name = rel.field.name
self.prefetch_cache_name = rel.field.related_query_name()
self.source_field_name = rel.field.m2m_reverse_field_name()
self.target_field_name = rel.field.m2m_field_name()
self.symmetrical = False
self.through = rel.through
self.reverse = reverse
self.source_field = self.through._meta.get_field(self.source_field_name)
self.target_field = self.through._meta.get_field(self.target_field_name)
self.core_filters = {}
self.pk_field_names = {}
for lh_field, rh_field in self.source_field.related_fields:
core_filter_key = '%s__%s' % (self.query_field_name, rh_field.name)
self.core_filters[core_filter_key] = getattr(instance, rh_field.attname)
self.pk_field_names[lh_field.name] = rh_field.name
self.related_val = self.source_field.get_foreign_related_value(instance)
if None in self.related_val:
raise ValueError('"%r" needs to have a value for field "%s" before '
'this many-to-many relationship can be used.' %
(instance, self.pk_field_names[self.source_field_name]))
# Even if this relation is not to pk, we require still pk value.
# The wish is that the instance has been already saved to DB,
# although having a pk value isn't a guarantee of that.
if instance.pk is None:
raise ValueError("%r instance needs to have a primary key value before "
"a many-to-many relationship can be used." %
instance.__class__.__name__)
def __call__(self, *, manager):
manager = getattr(self.model, manager)
manager_class = create_forward_many_to_many_manager(manager.__class__, rel, reverse)
return manager_class(instance=self.instance)
do_not_call_in_templates = True
def _build_remove_filters(self, removed_vals):
filters = Q((self.source_field_name, self.related_val))
# No need to add a subquery condition if removed_vals is a QuerySet without
# filters.
removed_vals_filters = (not isinstance(removed_vals, QuerySet) or
removed_vals._has_filters())
if removed_vals_filters:
filters &= Q((f'{self.target_field_name}__in', removed_vals))
if self.symmetrical:
symmetrical_filters = Q((self.target_field_name, self.related_val))
if removed_vals_filters:
symmetrical_filters &= Q((f'{self.source_field_name}__in', removed_vals))
filters |= symmetrical_filters
return filters
def _apply_rel_filters(self, queryset):
"""
Filter the queryset for the instance this manager is bound to.
"""
queryset._add_hints(instance=self.instance)
if self._db:
queryset = queryset.using(self._db)
queryset._defer_next_filter = True
return queryset._next_is_sticky().filter(**self.core_filters)
def _remove_prefetched_objects(self):
try:
self.instance._prefetched_objects_cache.pop(self.prefetch_cache_name)
except (AttributeError, KeyError):
pass # nothing to clear from cache
def get_queryset(self):
try:
return self.instance._prefetched_objects_cache[self.prefetch_cache_name]
except (AttributeError, KeyError):
queryset = super().get_queryset()
return self._apply_rel_filters(queryset)
def get_prefetch_queryset(self, instances, queryset=None):
if queryset is None:
queryset = super().get_queryset()
queryset._add_hints(instance=instances[0])
queryset = queryset.using(queryset._db or self._db)
query = {'%s__in' % self.query_field_name: instances}
queryset = queryset._next_is_sticky().filter(**query)
# M2M: need to annotate the query in order to get the primary model
# that the secondary model was actually related to. We know that
# there will already be a join on the join table, so we can just add
# the select.
# For non-autocreated 'through' models, can't assume we are
# dealing with PK values.
fk = self.through._meta.get_field(self.source_field_name)
join_table = fk.model._meta.db_table
connection = connections[queryset.db]
qn = connection.ops.quote_name
queryset = queryset.extra(select={
'_prefetch_related_val_%s' % f.attname:
'%s.%s' % (qn(join_table), qn(f.column)) for f in fk.local_related_fields})
return (
queryset,
lambda result: tuple(
getattr(result, '_prefetch_related_val_%s' % f.attname)
for f in fk.local_related_fields
),
lambda inst: tuple(
f.get_db_prep_value(getattr(inst, f.attname), connection)
for f in fk.foreign_related_fields
),
False,
self.prefetch_cache_name,
False,
)
def add(self, *objs, through_defaults=None):
self._remove_prefetched_objects()
db = router.db_for_write(self.through, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
self._add_items(
self.source_field_name, self.target_field_name, *objs,
through_defaults=through_defaults,
)
# If this is a symmetrical m2m relation to self, add the mirror
# entry in the m2m table.
if self.symmetrical:
self._add_items(
self.target_field_name,
self.source_field_name,
*objs,
through_defaults=through_defaults,
)
add.alters_data = True
def remove(self, *objs):
self._remove_prefetched_objects()
self._remove_items(self.source_field_name, self.target_field_name, *objs)
remove.alters_data = True
def clear(self):
db = router.db_for_write(self.through, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
signals.m2m_changed.send(
sender=self.through, action="pre_clear",
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=None, using=db,
)
self._remove_prefetched_objects()
filters = self._build_remove_filters(super().get_queryset().using(db))
self.through._default_manager.using(db).filter(filters).delete()
signals.m2m_changed.send(
sender=self.through, action="post_clear",
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=None, using=db,
)
clear.alters_data = True
def set(self, objs, *, clear=False, through_defaults=None):
# Force evaluation of `objs` in case it's a queryset whose value
# could be affected by `manager.clear()`. Refs #19816.
objs = tuple(objs)
db = router.db_for_write(self.through, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
if clear:
self.clear()
self.add(*objs, through_defaults=through_defaults)
else:
old_ids = set(self.using(db).values_list(self.target_field.target_field.attname, flat=True))
new_objs = []
for obj in objs:
fk_val = (
self.target_field.get_foreign_related_value(obj)[0]
if isinstance(obj, self.model)
else self.target_field.get_prep_value(obj)
)
if fk_val in old_ids:
old_ids.remove(fk_val)
else:
new_objs.append(obj)
self.remove(*old_ids)
self.add(*new_objs, through_defaults=through_defaults)
set.alters_data = True
def create(self, *, through_defaults=None, **kwargs):
db = router.db_for_write(self.instance.__class__, instance=self.instance)
new_obj = super(ManyRelatedManager, self.db_manager(db)).create(**kwargs)
self.add(new_obj, through_defaults=through_defaults)
return new_obj
create.alters_data = True
def get_or_create(self, *, through_defaults=None, **kwargs):
db = router.db_for_write(self.instance.__class__, instance=self.instance)
obj, created = super(ManyRelatedManager, self.db_manager(db)).get_or_create(**kwargs)
# We only need to add() if created because if we got an object back
# from get() then the relationship already exists.
if created:
self.add(obj, through_defaults=through_defaults)
return obj, created
get_or_create.alters_data = True
def update_or_create(self, *, through_defaults=None, **kwargs):
db = router.db_for_write(self.instance.__class__, instance=self.instance)
obj, created = super(ManyRelatedManager, self.db_manager(db)).update_or_create(**kwargs)
# We only need to add() if created because if we got an object back
# from get() then the relationship already exists.
if created:
self.add(obj, through_defaults=through_defaults)
return obj, created
update_or_create.alters_data = True
def _get_target_ids(self, target_field_name, objs):
"""
Return the set of ids of `objs` that the target field references.
"""
from django.db.models import Model
target_ids = set()
target_field = self.through._meta.get_field(target_field_name)
for obj in objs:
if isinstance(obj, self.model):
if not router.allow_relation(obj, self.instance):
raise ValueError(
'Cannot add "%r": instance is on database "%s", '
'value is on database "%s"' %
(obj, self.instance._state.db, obj._state.db)
)
target_id = target_field.get_foreign_related_value(obj)[0]
if target_id is None:
raise ValueError(
'Cannot add "%r": the value for field "%s" is None' %
(obj, target_field_name)
)
target_ids.add(target_id)
elif isinstance(obj, Model):
raise TypeError(
"'%s' instance expected, got %r" %
(self.model._meta.object_name, obj)
)
else:
target_ids.add(target_field.get_prep_value(obj))
return target_ids
def _get_missing_target_ids(self, source_field_name, target_field_name, db, target_ids):
"""
Return the subset of ids of `objs` that aren't already assigned to
this relationship.
"""
vals = self.through._default_manager.using(db).values_list(
target_field_name, flat=True
).filter(**{
source_field_name: self.related_val[0],
'%s__in' % target_field_name: target_ids,
})
return target_ids.difference(vals)
def _get_add_plan(self, db, source_field_name):
"""
Return a boolean triple of the way the add should be performed.
The first element is whether or not bulk_create(ignore_conflicts)
can be used, the second whether or not signals must be sent, and
the third element is whether or not the immediate bulk insertion
with conflicts ignored can be performed.
"""
# Conflicts can be ignored when the intermediary model is
# auto-created as the only possible collision is on the
# (source_id, target_id) tuple. The same assertion doesn't hold for
# user-defined intermediary models as they could have other fields
# causing conflicts which must be surfaced.
can_ignore_conflicts = (
self.through._meta.auto_created is not False and
connections[db].features.supports_ignore_conflicts
)
# Don't send the signal when inserting duplicate data row
# for symmetrical reverse entries.
must_send_signals = (self.reverse or source_field_name == self.source_field_name) and (
signals.m2m_changed.has_listeners(self.through)
)
# Fast addition through bulk insertion can only be performed
# if no m2m_changed listeners are connected for self.through
# as they require the added set of ids to be provided via
# pk_set.
return can_ignore_conflicts, must_send_signals, (can_ignore_conflicts and not must_send_signals)
def _add_items(self, source_field_name, target_field_name, *objs, through_defaults=None):
# source_field_name: the PK fieldname in join table for the source object
# target_field_name: the PK fieldname in join table for the target object
# *objs - objects to add. Either object instances, or primary keys of object instances.
if not objs:
return
through_defaults = dict(resolve_callables(through_defaults or {}))
target_ids = self._get_target_ids(target_field_name, objs)
db = router.db_for_write(self.through, instance=self.instance)
can_ignore_conflicts, must_send_signals, can_fast_add = self._get_add_plan(db, source_field_name)
if can_fast_add:
self.through._default_manager.using(db).bulk_create([
self.through(**{
'%s_id' % source_field_name: self.related_val[0],
'%s_id' % target_field_name: target_id,
})
for target_id in target_ids
], ignore_conflicts=True)
return
missing_target_ids = self._get_missing_target_ids(
source_field_name, target_field_name, db, target_ids
)
with transaction.atomic(using=db, savepoint=False):
if must_send_signals:
signals.m2m_changed.send(
sender=self.through, action='pre_add',
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=missing_target_ids, using=db,
)
# Add the ones that aren't there already.
self.through._default_manager.using(db).bulk_create([
self.through(**through_defaults, **{
'%s_id' % source_field_name: self.related_val[0],
'%s_id' % target_field_name: target_id,
})
for target_id in missing_target_ids
], ignore_conflicts=can_ignore_conflicts)
if must_send_signals:
signals.m2m_changed.send(
sender=self.through, action='post_add',
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=missing_target_ids, using=db,
)
def _remove_items(self, source_field_name, target_field_name, *objs):
# source_field_name: the PK colname in join table for the source object
# target_field_name: the PK colname in join table for the target object
# *objs - objects to remove. Either object instances, or primary
# keys of object instances.
if not objs:
return
# Check that all the objects are of the right type
old_ids = set()
for obj in objs:
if isinstance(obj, self.model):
fk_val = self.target_field.get_foreign_related_value(obj)[0]
old_ids.add(fk_val)
else:
old_ids.add(obj)
db = router.db_for_write(self.through, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
# Send a signal to the other end if need be.
signals.m2m_changed.send(
sender=self.through, action="pre_remove",
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=old_ids, using=db,
)
target_model_qs = super().get_queryset()
if target_model_qs._has_filters():
old_vals = target_model_qs.using(db).filter(**{
'%s__in' % self.target_field.target_field.attname: old_ids})
else:
old_vals = old_ids
filters = self._build_remove_filters(old_vals)
self.through._default_manager.using(db).filter(filters).delete()
signals.m2m_changed.send(
sender=self.through, action="post_remove",
instance=self.instance, reverse=self.reverse,
model=self.model, pk_set=old_ids, using=db,
)
return ManyRelatedManager
|
bd60960f3c4424ba8563b18907ac0bb559e1e674482499b5092a2e4f7ff0beeb | """
Create SQL statements for QuerySets.
The code in here encapsulates all of the SQL construction so that QuerySets
themselves do not have to (and could be backed by things other than SQL
databases). The abstraction barrier only works one way: this module has to know
all about the internals of models in order to get the information it needs.
"""
import copy
import difflib
import functools
import sys
from collections import Counter, namedtuple
from collections.abc import Iterator, Mapping
from itertools import chain, count, product
from string import ascii_uppercase
from django.core.exceptions import FieldDoesNotExist, FieldError
from django.db import DEFAULT_DB_ALIAS, NotSupportedError, connections
from django.db.models.aggregates import Count
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import (
BaseExpression, Col, Exists, F, OuterRef, Ref, ResolvedOuterRef,
)
from django.db.models.fields import Field
from django.db.models.fields.related_lookups import MultiColSource
from django.db.models.lookups import Lookup
from django.db.models.query_utils import (
Q, check_rel_lookup_compatibility, refs_expression,
)
from django.db.models.sql.constants import INNER, LOUTER, ORDER_DIR, SINGLE
from django.db.models.sql.datastructures import (
BaseTable, Empty, Join, MultiJoin,
)
from django.db.models.sql.where import (
AND, OR, ExtraWhere, NothingNode, WhereNode,
)
from django.utils.functional import cached_property
from django.utils.tree import Node
__all__ = ['Query', 'RawQuery']
def get_field_names_from_opts(opts):
return set(chain.from_iterable(
(f.name, f.attname) if f.concrete else (f.name,)
for f in opts.get_fields()
))
def get_children_from_q(q):
for child in q.children:
if isinstance(child, Node):
yield from get_children_from_q(child)
else:
yield child
JoinInfo = namedtuple(
'JoinInfo',
('final_field', 'targets', 'opts', 'joins', 'path', 'transform_function')
)
class RawQuery:
"""A single raw SQL query."""
def __init__(self, sql, using, params=()):
self.params = params
self.sql = sql
self.using = using
self.cursor = None
# Mirror some properties of a normal query so that
# the compiler can be used to process results.
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.extra_select = {}
self.annotation_select = {}
def chain(self, using):
return self.clone(using)
def clone(self, using):
return RawQuery(self.sql, using, params=self.params)
def get_columns(self):
if self.cursor is None:
self._execute_query()
converter = connections[self.using].introspection.identifier_converter
return [converter(column_meta[0])
for column_meta in self.cursor.description]
def __iter__(self):
# Always execute a new query for a new iterator.
# This could be optimized with a cache at the expense of RAM.
self._execute_query()
if not connections[self.using].features.can_use_chunked_reads:
# If the database can't use chunked reads we need to make sure we
# evaluate the entire query up front.
result = list(self.cursor)
else:
result = self.cursor
return iter(result)
def __repr__(self):
return "<%s: %s>" % (self.__class__.__name__, self)
@property
def params_type(self):
if self.params is None:
return None
return dict if isinstance(self.params, Mapping) else tuple
def __str__(self):
if self.params_type is None:
return self.sql
return self.sql % self.params_type(self.params)
def _execute_query(self):
connection = connections[self.using]
# Adapt parameters to the database, as much as possible considering
# that the target type isn't known. See #17755.
params_type = self.params_type
adapter = connection.ops.adapt_unknown_value
if params_type is tuple:
params = tuple(adapter(val) for val in self.params)
elif params_type is dict:
params = {key: adapter(val) for key, val in self.params.items()}
elif params_type is None:
params = None
else:
raise RuntimeError("Unexpected params type: %s" % params_type)
self.cursor = connection.cursor()
self.cursor.execute(self.sql, params)
ExplainInfo = namedtuple('ExplainInfo', ('format', 'options'))
class Query(BaseExpression):
"""A single SQL query."""
alias_prefix = 'T'
empty_result_set_value = None
subq_aliases = frozenset([alias_prefix])
compiler = 'SQLCompiler'
base_table_class = BaseTable
join_class = Join
def __init__(self, model, alias_cols=True):
self.model = model
self.alias_refcount = {}
# alias_map is the most important data structure regarding joins.
# It's used for recording which joins exist in the query and what
# types they are. The key is the alias of the joined table (possibly
# the table name) and the value is a Join-like object (see
# sql.datastructures.Join for more information).
self.alias_map = {}
# Whether to provide alias to columns during reference resolving.
self.alias_cols = alias_cols
# Sometimes the query contains references to aliases in outer queries (as
# a result of split_exclude). Correct alias quoting needs to know these
# aliases too.
# Map external tables to whether they are aliased.
self.external_aliases = {}
self.table_map = {} # Maps table names to list of aliases.
self.default_cols = True
self.default_ordering = True
self.standard_ordering = True
self.used_aliases = set()
self.filter_is_sticky = False
self.subquery = False
# SQL-related attributes
# Select and related select clauses are expressions to use in the
# SELECT clause of the query.
# The select is used for cases where we want to set up the select
# clause to contain other than default fields (values(), subqueries...)
# Note that annotations go to annotations dictionary.
self.select = ()
self.where = WhereNode()
# The group_by attribute can have one of the following forms:
# - None: no group by at all in the query
# - A tuple of expressions: group by (at least) those expressions.
# String refs are also allowed for now.
# - True: group by all select fields of the model
# See compiler.get_group_by() for details.
self.group_by = None
self.order_by = ()
self.low_mark, self.high_mark = 0, None # Used for offset/limit
self.distinct = False
self.distinct_fields = ()
self.select_for_update = False
self.select_for_update_nowait = False
self.select_for_update_skip_locked = False
self.select_for_update_of = ()
self.select_for_no_key_update = False
self.select_related = False
# Arbitrary limit for select_related to prevents infinite recursion.
self.max_depth = 5
# Holds the selects defined by a call to values() or values_list()
# excluding annotation_select and extra_select.
self.values_select = ()
# SQL annotation-related attributes
self.annotations = {} # Maps alias -> Annotation Expression
self.annotation_select_mask = None
self._annotation_select_cache = None
# Set combination attributes
self.combinator = None
self.combinator_all = False
self.combined_queries = ()
# These are for extensions. The contents are more or less appended
# verbatim to the appropriate clause.
self.extra = {} # Maps col_alias -> (col_sql, params).
self.extra_select_mask = None
self._extra_select_cache = None
self.extra_tables = ()
self.extra_order_by = ()
# A tuple that is a set of model field names and either True, if these
# are the fields to defer, or False if these are the only fields to
# load.
self.deferred_loading = (frozenset(), True)
self._filtered_relations = {}
self.explain_info = None
@property
def output_field(self):
if len(self.select) == 1:
select = self.select[0]
return getattr(select, 'target', None) or select.field
elif len(self.annotation_select) == 1:
return next(iter(self.annotation_select.values())).output_field
@property
def has_select_fields(self):
return bool(self.select or self.annotation_select_mask or self.extra_select_mask)
@cached_property
def base_table(self):
for alias in self.alias_map:
return alias
def __str__(self):
"""
Return the query as a string of SQL with the parameter values
substituted in (use sql_with_params() to see the unsubstituted string).
Parameter values won't necessarily be quoted correctly, since that is
done by the database interface at execution time.
"""
sql, params = self.sql_with_params()
return sql % params
def sql_with_params(self):
"""
Return the query as an SQL string and the parameters that will be
substituted into the query.
"""
return self.get_compiler(DEFAULT_DB_ALIAS).as_sql()
def __deepcopy__(self, memo):
"""Limit the amount of work when a Query is deepcopied."""
result = self.clone()
memo[id(self)] = result
return result
def get_compiler(self, using=None, connection=None, elide_empty=True):
if using is None and connection is None:
raise ValueError("Need either using or connection")
if using:
connection = connections[using]
return connection.ops.compiler(self.compiler)(self, connection, using, elide_empty)
def get_meta(self):
"""
Return the Options instance (the model._meta) from which to start
processing. Normally, this is self.model._meta, but it can be changed
by subclasses.
"""
return self.model._meta
def clone(self):
"""
Return a copy of the current Query. A lightweight alternative to
to deepcopy().
"""
obj = Empty()
obj.__class__ = self.__class__
# Copy references to everything.
obj.__dict__ = self.__dict__.copy()
# Clone attributes that can't use shallow copy.
obj.alias_refcount = self.alias_refcount.copy()
obj.alias_map = self.alias_map.copy()
obj.external_aliases = self.external_aliases.copy()
obj.table_map = self.table_map.copy()
obj.where = self.where.clone()
obj.annotations = self.annotations.copy()
if self.annotation_select_mask is not None:
obj.annotation_select_mask = self.annotation_select_mask.copy()
if self.combined_queries:
obj.combined_queries = tuple([
query.clone() for query in self.combined_queries
])
# _annotation_select_cache cannot be copied, as doing so breaks the
# (necessary) state in which both annotations and
# _annotation_select_cache point to the same underlying objects.
# It will get re-populated in the cloned queryset the next time it's
# used.
obj._annotation_select_cache = None
obj.extra = self.extra.copy()
if self.extra_select_mask is not None:
obj.extra_select_mask = self.extra_select_mask.copy()
if self._extra_select_cache is not None:
obj._extra_select_cache = self._extra_select_cache.copy()
if self.select_related is not False:
# Use deepcopy because select_related stores fields in nested
# dicts.
obj.select_related = copy.deepcopy(obj.select_related)
if 'subq_aliases' in self.__dict__:
obj.subq_aliases = self.subq_aliases.copy()
obj.used_aliases = self.used_aliases.copy()
obj._filtered_relations = self._filtered_relations.copy()
# Clear the cached_property
try:
del obj.base_table
except AttributeError:
pass
return obj
def chain(self, klass=None):
"""
Return a copy of the current Query that's ready for another operation.
The klass argument changes the type of the Query, e.g. UpdateQuery.
"""
obj = self.clone()
if klass and obj.__class__ != klass:
obj.__class__ = klass
if not obj.filter_is_sticky:
obj.used_aliases = set()
obj.filter_is_sticky = False
if hasattr(obj, '_setup_query'):
obj._setup_query()
return obj
def relabeled_clone(self, change_map):
clone = self.clone()
clone.change_aliases(change_map)
return clone
def _get_col(self, target, field, alias):
if not self.alias_cols:
alias = None
return target.get_col(alias, field)
def rewrite_cols(self, annotation, col_cnt):
# We must make sure the inner query has the referred columns in it.
# If we are aggregating over an annotation, then Django uses Ref()
# instances to note this. However, if we are annotating over a column
# of a related model, then it might be that column isn't part of the
# SELECT clause of the inner query, and we must manually make sure
# the column is selected. An example case is:
# .aggregate(Sum('author__awards'))
# Resolving this expression results in a join to author, but there
# is no guarantee the awards column of author is in the select clause
# of the query. Thus we must manually add the column to the inner
# query.
orig_exprs = annotation.get_source_expressions()
new_exprs = []
for expr in orig_exprs:
# FIXME: These conditions are fairly arbitrary. Identify a better
# method of having expressions decide which code path they should
# take.
if isinstance(expr, Ref):
# Its already a Ref to subquery (see resolve_ref() for
# details)
new_exprs.append(expr)
elif isinstance(expr, (WhereNode, Lookup)):
# Decompose the subexpressions further. The code here is
# copied from the else clause, but this condition must appear
# before the contains_aggregate/is_summary condition below.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
else:
# Reuse aliases of expressions already selected in subquery.
for col_alias, selected_annotation in self.annotation_select.items():
if selected_annotation is expr:
new_expr = Ref(col_alias, expr)
break
else:
# An expression that is not selected the subquery.
if isinstance(expr, Col) or (expr.contains_aggregate and not expr.is_summary):
# Reference column or another aggregate. Select it
# under a non-conflicting alias.
col_cnt += 1
col_alias = '__col%d' % col_cnt
self.annotations[col_alias] = expr
self.append_annotation_mask([col_alias])
new_expr = Ref(col_alias, expr)
else:
# Some other expression not referencing database values
# directly. Its subexpression might contain Cols.
new_expr, col_cnt = self.rewrite_cols(expr, col_cnt)
new_exprs.append(new_expr)
annotation.set_source_expressions(new_exprs)
return annotation, col_cnt
def get_aggregation(self, using, added_aggregate_names):
"""
Return the dictionary with the values of the existing aggregations.
"""
if not self.annotation_select:
return {}
existing_annotations = [
annotation for alias, annotation
in self.annotations.items()
if alias not in added_aggregate_names
]
# Decide if we need to use a subquery.
#
# Existing annotations would cause incorrect results as get_aggregation()
# must produce just one result and thus must not use GROUP BY. But we
# aren't smart enough to remove the existing annotations from the
# query, so those would force us to use GROUP BY.
#
# If the query has limit or distinct, or uses set operations, then
# those operations must be done in a subquery so that the query
# aggregates on the limit and/or distinct results instead of applying
# the distinct and limit after the aggregation.
if (isinstance(self.group_by, tuple) or self.is_sliced or existing_annotations or
self.distinct or self.combinator):
from django.db.models.sql.subqueries import AggregateQuery
inner_query = self.clone()
inner_query.subquery = True
outer_query = AggregateQuery(self.model, inner_query)
inner_query.select_for_update = False
inner_query.select_related = False
inner_query.set_annotation_mask(self.annotation_select)
# Queries with distinct_fields need ordering and when a limit is
# applied we must take the slice from the ordered query. Otherwise
# no need for ordering.
inner_query.clear_ordering(force=False)
if not inner_query.distinct:
# If the inner query uses default select and it has some
# aggregate annotations, then we must make sure the inner
# query is grouped by the main model's primary key. However,
# clearing the select clause can alter results if distinct is
# used.
has_existing_aggregate_annotations = any(
annotation for annotation in existing_annotations
if getattr(annotation, 'contains_aggregate', True)
)
if inner_query.default_cols and has_existing_aggregate_annotations:
inner_query.group_by = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
inner_query.default_cols = False
relabels = {t: 'subquery' for t in inner_query.alias_map}
relabels[None] = 'subquery'
# Remove any aggregates marked for reduction from the subquery
# and move them to the outer AggregateQuery.
col_cnt = 0
for alias, expression in list(inner_query.annotation_select.items()):
annotation_select_mask = inner_query.annotation_select_mask
if expression.is_summary:
expression, col_cnt = inner_query.rewrite_cols(expression, col_cnt)
outer_query.annotations[alias] = expression.relabeled_clone(relabels)
del inner_query.annotations[alias]
annotation_select_mask.remove(alias)
# Make sure the annotation_select wont use cached results.
inner_query.set_annotation_mask(inner_query.annotation_select_mask)
if inner_query.select == () and not inner_query.default_cols and not inner_query.annotation_select_mask:
# In case of Model.objects[0:3].count(), there would be no
# field selected in the inner query, yet we must use a subquery.
# So, make sure at least one field is selected.
inner_query.select = (self.model._meta.pk.get_col(inner_query.get_initial_alias()),)
else:
outer_query = self
self.select = ()
self.default_cols = False
self.extra = {}
empty_set_result = [
expression.empty_result_set_value
for expression in outer_query.annotation_select.values()
]
elide_empty = not any(result is NotImplemented for result in empty_set_result)
outer_query.clear_ordering(force=True)
outer_query.clear_limits()
outer_query.select_for_update = False
outer_query.select_related = False
compiler = outer_query.get_compiler(using, elide_empty=elide_empty)
result = compiler.execute_sql(SINGLE)
if result is None:
result = empty_set_result
converters = compiler.get_converters(outer_query.annotation_select.values())
result = next(compiler.apply_converters((result,), converters))
return dict(zip(outer_query.annotation_select, result))
def get_count(self, using):
"""
Perform a COUNT() query using the current filter constraints.
"""
obj = self.clone()
obj.add_annotation(Count('*'), alias='__count', is_summary=True)
return obj.get_aggregation(using, ['__count'])['__count']
def has_filters(self):
return self.where
def exists(self, using, limit=True):
q = self.clone()
if not q.distinct:
if q.group_by is True:
q.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
q.set_group_by(allow_aliases=False)
q.clear_select_clause()
if q.combined_queries and q.combinator == 'union':
limit_combined = connections[using].features.supports_slicing_ordering_in_compound
q.combined_queries = tuple(
combined_query.exists(using, limit=limit_combined)
for combined_query in q.combined_queries
)
q.clear_ordering(force=True)
if limit:
q.set_limits(high=1)
q.add_extra({'a': 1}, None, None, None, None, None)
q.set_extra_mask(['a'])
return q
def has_results(self, using):
q = self.exists(using)
compiler = q.get_compiler(using=using)
return compiler.has_results()
def explain(self, using, format=None, **options):
q = self.clone()
q.explain_info = ExplainInfo(format, options)
compiler = q.get_compiler(using=using)
return '\n'.join(compiler.explain_query())
def combine(self, rhs, connector):
"""
Merge the 'rhs' query into the current one (with any 'rhs' effects
being applied *after* (that is, "to the right of") anything in the
current query. 'rhs' is not modified during a call to this function.
The 'connector' parameter describes how to connect filters from the
'rhs' query.
"""
if self.model != rhs.model:
raise TypeError('Cannot combine queries on two different base models.')
if self.is_sliced:
raise TypeError('Cannot combine queries once a slice has been taken.')
if self.distinct != rhs.distinct:
raise TypeError('Cannot combine a unique query with a non-unique query.')
if self.distinct_fields != rhs.distinct_fields:
raise TypeError('Cannot combine queries with different distinct fields.')
# If lhs and rhs shares the same alias prefix, it is possible to have
# conflicting alias changes like T4 -> T5, T5 -> T6, which might end up
# as T4 -> T6 while combining two querysets. To prevent this, change an
# alias prefix of the rhs and update current aliases accordingly,
# except if the alias is the base table since it must be present in the
# query on both sides.
initial_alias = self.get_initial_alias()
rhs.bump_prefix(self, exclude={initial_alias})
# Work out how to relabel the rhs aliases, if necessary.
change_map = {}
conjunction = (connector == AND)
# Determine which existing joins can be reused. When combining the
# query with AND we must recreate all joins for m2m filters. When
# combining with OR we can reuse joins. The reason is that in AND
# case a single row can't fulfill a condition like:
# revrel__col=1 & revrel__col=2
# But, there might be two different related rows matching this
# condition. In OR case a single True is enough, so single row is
# enough, too.
#
# Note that we will be creating duplicate joins for non-m2m joins in
# the AND case. The results will be correct but this creates too many
# joins. This is something that could be fixed later on.
reuse = set() if conjunction else set(self.alias_map)
joinpromoter = JoinPromoter(connector, 2, False)
joinpromoter.add_votes(
j for j in self.alias_map if self.alias_map[j].join_type == INNER)
rhs_votes = set()
# Now, add the joins from rhs query into the new query (skipping base
# table).
rhs_tables = list(rhs.alias_map)[1:]
for alias in rhs_tables:
join = rhs.alias_map[alias]
# If the left side of the join was already relabeled, use the
# updated alias.
join = join.relabeled_clone(change_map)
new_alias = self.join(join, reuse=reuse)
if join.join_type == INNER:
rhs_votes.add(new_alias)
# We can't reuse the same join again in the query. If we have two
# distinct joins for the same connection in rhs query, then the
# combined query must have two joins, too.
reuse.discard(new_alias)
if alias != new_alias:
change_map[alias] = new_alias
if not rhs.alias_refcount[alias]:
# The alias was unused in the rhs query. Unref it so that it
# will be unused in the new query, too. We have to add and
# unref the alias so that join promotion has information of
# the join type for the unused alias.
self.unref_alias(new_alias)
joinpromoter.add_votes(rhs_votes)
joinpromoter.update_join_types(self)
# Combine subqueries aliases to ensure aliases relabelling properly
# handle subqueries when combining where and select clauses.
self.subq_aliases |= rhs.subq_aliases
# Now relabel a copy of the rhs where-clause and add it to the current
# one.
w = rhs.where.clone()
w.relabel_aliases(change_map)
self.where.add(w, connector)
# Selection columns and extra extensions are those provided by 'rhs'.
if rhs.select:
self.set_select([col.relabeled_clone(change_map) for col in rhs.select])
else:
self.select = ()
if connector == OR:
# It would be nice to be able to handle this, but the queries don't
# really make sense (or return consistent value sets). Not worth
# the extra complexity when you can write a real query instead.
if self.extra and rhs.extra:
raise ValueError("When merging querysets using 'or', you cannot have extra(select=...) on both sides.")
self.extra.update(rhs.extra)
extra_select_mask = set()
if self.extra_select_mask is not None:
extra_select_mask.update(self.extra_select_mask)
if rhs.extra_select_mask is not None:
extra_select_mask.update(rhs.extra_select_mask)
if extra_select_mask:
self.set_extra_mask(extra_select_mask)
self.extra_tables += rhs.extra_tables
# Ordering uses the 'rhs' ordering, unless it has none, in which case
# the current ordering is used.
self.order_by = rhs.order_by or self.order_by
self.extra_order_by = rhs.extra_order_by or self.extra_order_by
def deferred_to_data(self, target, callback):
"""
Convert the self.deferred_loading data structure to an alternate data
structure, describing the field that *will* be loaded. This is used to
compute the columns to select from the database and also by the
QuerySet class to work out which fields are being initialized on each
model. Models that have all their fields included aren't mentioned in
the result, only those that have field restrictions in place.
The "target" parameter is the instance that is populated (in place).
The "callback" is a function that is called whenever a (model, field)
pair need to be added to "target". It accepts three parameters:
"target", and the model and list of fields being added for that model.
"""
field_names, defer = self.deferred_loading
if not field_names:
return
orig_opts = self.get_meta()
seen = {}
must_include = {orig_opts.concrete_model: {orig_opts.pk}}
for field_name in field_names:
parts = field_name.split(LOOKUP_SEP)
cur_model = self.model._meta.concrete_model
opts = orig_opts
for name in parts[:-1]:
old_model = cur_model
if name in self._filtered_relations:
name = self._filtered_relations[name].relation_name
source = opts.get_field(name)
if is_reverse_o2o(source):
cur_model = source.related_model
else:
cur_model = source.remote_field.model
opts = cur_model._meta
# Even if we're "just passing through" this model, we must add
# both the current model's pk and the related reference field
# (if it's not a reverse relation) to the things we select.
if not is_reverse_o2o(source):
must_include[old_model].add(source)
add_to_dict(must_include, cur_model, opts.pk)
field = opts.get_field(parts[-1])
is_reverse_object = field.auto_created and not field.concrete
model = field.related_model if is_reverse_object else field.model
model = model._meta.concrete_model
if model == opts.model:
model = cur_model
if not is_reverse_o2o(field):
add_to_dict(seen, model, field)
if defer:
# We need to load all fields for each model, except those that
# appear in "seen" (for all models that appear in "seen"). The only
# slight complexity here is handling fields that exist on parent
# models.
workset = {}
for model, values in seen.items():
for field in model._meta.local_fields:
if field not in values:
m = field.model._meta.concrete_model
add_to_dict(workset, m, field)
for model, values in must_include.items():
# If we haven't included a model in workset, we don't add the
# corresponding must_include fields for that model, since an
# empty set means "include all fields". That's why there's no
# "else" branch here.
if model in workset:
workset[model].update(values)
for model, values in workset.items():
callback(target, model, values)
else:
for model, values in must_include.items():
if model in seen:
seen[model].update(values)
else:
# As we've passed through this model, but not explicitly
# included any fields, we have to make sure it's mentioned
# so that only the "must include" fields are pulled in.
seen[model] = values
# Now ensure that every model in the inheritance chain is mentioned
# in the parent list. Again, it must be mentioned to ensure that
# only "must include" fields are pulled in.
for model in orig_opts.get_parent_list():
seen.setdefault(model, set())
for model, values in seen.items():
callback(target, model, values)
def table_alias(self, table_name, create=False, filtered_relation=None):
"""
Return a table alias for the given table_name and whether this is a
new alias or not.
If 'create' is true, a new alias is always created. Otherwise, the
most recently created alias for the table (if one exists) is reused.
"""
alias_list = self.table_map.get(table_name)
if not create and alias_list:
alias = alias_list[0]
self.alias_refcount[alias] += 1
return alias, False
# Create a new alias for this table.
if alias_list:
alias = '%s%d' % (self.alias_prefix, len(self.alias_map) + 1)
alias_list.append(alias)
else:
# The first occurrence of a table uses the table name directly.
alias = filtered_relation.alias if filtered_relation is not None else table_name
self.table_map[table_name] = [alias]
self.alias_refcount[alias] = 1
return alias, True
def ref_alias(self, alias):
"""Increases the reference count for this alias."""
self.alias_refcount[alias] += 1
def unref_alias(self, alias, amount=1):
"""Decreases the reference count for this alias."""
self.alias_refcount[alias] -= amount
def promote_joins(self, aliases):
"""
Promote recursively the join type of given aliases and its children to
an outer join. If 'unconditional' is False, only promote the join if
it is nullable or the parent join is an outer join.
The children promotion is done to avoid join chains that contain a LOUTER
b INNER c. So, if we have currently a INNER b INNER c and a->b is promoted,
then we must also promote b->c automatically, or otherwise the promotion
of a->b doesn't actually change anything in the query results.
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type is None:
# This is the base table (first FROM entry) - this table
# isn't really joined at all in the query, so we should not
# alter its join type.
continue
# Only the first alias (skipped above) should have None join_type
assert self.alias_map[alias].join_type is not None
parent_alias = self.alias_map[alias].parent_alias
parent_louter = parent_alias and self.alias_map[parent_alias].join_type == LOUTER
already_louter = self.alias_map[alias].join_type == LOUTER
if ((self.alias_map[alias].nullable or parent_louter) and
not already_louter):
self.alias_map[alias] = self.alias_map[alias].promote()
# Join type of 'alias' changed, so re-examine all aliases that
# refer to this one.
aliases.extend(
join for join in self.alias_map
if self.alias_map[join].parent_alias == alias and join not in aliases
)
def demote_joins(self, aliases):
"""
Change join type from LOUTER to INNER for all joins in aliases.
Similarly to promote_joins(), this method must ensure no join chains
containing first an outer, then an inner join are generated. If we
are demoting b->c join in chain a LOUTER b LOUTER c then we must
demote a->b automatically, or otherwise the demotion of b->c doesn't
actually change anything in the query results. .
"""
aliases = list(aliases)
while aliases:
alias = aliases.pop(0)
if self.alias_map[alias].join_type == LOUTER:
self.alias_map[alias] = self.alias_map[alias].demote()
parent_alias = self.alias_map[alias].parent_alias
if self.alias_map[parent_alias].join_type == INNER:
aliases.append(parent_alias)
def reset_refcounts(self, to_counts):
"""
Reset reference counts for aliases so that they match the value passed
in `to_counts`.
"""
for alias, cur_refcount in self.alias_refcount.copy().items():
unref_amount = cur_refcount - to_counts.get(alias, 0)
self.unref_alias(alias, unref_amount)
def change_aliases(self, change_map):
"""
Change the aliases in change_map (which maps old-alias -> new-alias),
relabelling any references to them in select columns and the where
clause.
"""
# If keys and values of change_map were to intersect, an alias might be
# updated twice (e.g. T4 -> T5, T5 -> T6, so also T4 -> T6) depending
# on their order in change_map.
assert set(change_map).isdisjoint(change_map.values())
# 1. Update references in "select" (normal columns plus aliases),
# "group by" and "where".
self.where.relabel_aliases(change_map)
if isinstance(self.group_by, tuple):
self.group_by = tuple([col.relabeled_clone(change_map) for col in self.group_by])
self.select = tuple([col.relabeled_clone(change_map) for col in self.select])
self.annotations = self.annotations and {
key: col.relabeled_clone(change_map) for key, col in self.annotations.items()
}
# 2. Rename the alias in the internal table/alias datastructures.
for old_alias, new_alias in change_map.items():
if old_alias not in self.alias_map:
continue
alias_data = self.alias_map[old_alias].relabeled_clone(change_map)
self.alias_map[new_alias] = alias_data
self.alias_refcount[new_alias] = self.alias_refcount[old_alias]
del self.alias_refcount[old_alias]
del self.alias_map[old_alias]
table_aliases = self.table_map[alias_data.table_name]
for pos, alias in enumerate(table_aliases):
if alias == old_alias:
table_aliases[pos] = new_alias
break
self.external_aliases = {
# Table is aliased or it's being changed and thus is aliased.
change_map.get(alias, alias): (aliased or alias in change_map)
for alias, aliased in self.external_aliases.items()
}
def bump_prefix(self, other_query, exclude=None):
"""
Change the alias prefix to the next letter in the alphabet in a way
that the other query's aliases and this query's aliases will not
conflict. Even tables that previously had no alias will get an alias
after this call. To prevent changing aliases use the exclude parameter.
"""
def prefix_gen():
"""
Generate a sequence of characters in alphabetical order:
-> 'A', 'B', 'C', ...
When the alphabet is finished, the sequence will continue with the
Cartesian product:
-> 'AA', 'AB', 'AC', ...
"""
alphabet = ascii_uppercase
prefix = chr(ord(self.alias_prefix) + 1)
yield prefix
for n in count(1):
seq = alphabet[alphabet.index(prefix):] if prefix else alphabet
for s in product(seq, repeat=n):
yield ''.join(s)
prefix = None
if self.alias_prefix != other_query.alias_prefix:
# No clashes between self and outer query should be possible.
return
# Explicitly avoid infinite loop. The constant divider is based on how
# much depth recursive subquery references add to the stack. This value
# might need to be adjusted when adding or removing function calls from
# the code path in charge of performing these operations.
local_recursion_limit = sys.getrecursionlimit() // 16
for pos, prefix in enumerate(prefix_gen()):
if prefix not in self.subq_aliases:
self.alias_prefix = prefix
break
if pos > local_recursion_limit:
raise RecursionError(
'Maximum recursion depth exceeded: too many subqueries.'
)
self.subq_aliases = self.subq_aliases.union([self.alias_prefix])
other_query.subq_aliases = other_query.subq_aliases.union(self.subq_aliases)
if exclude is None:
exclude = {}
self.change_aliases({
alias: '%s%d' % (self.alias_prefix, pos)
for pos, alias in enumerate(self.alias_map)
if alias not in exclude
})
def get_initial_alias(self):
"""
Return the first alias for this query, after increasing its reference
count.
"""
if self.alias_map:
alias = self.base_table
self.ref_alias(alias)
else:
alias = self.join(self.base_table_class(self.get_meta().db_table, None))
return alias
def count_active_tables(self):
"""
Return the number of tables in this query with a non-zero reference
count. After execution, the reference counts are zeroed, so tables
added in compiler will not be seen by this method.
"""
return len([1 for count in self.alias_refcount.values() if count])
def join(self, join, reuse=None):
"""
Return an alias for the 'join', either reusing an existing alias for
that join or creating a new one. 'join' is either a base_table_class or
join_class.
The 'reuse' parameter can be either None which means all joins are
reusable, or it can be a set containing the aliases that can be reused.
A join is always created as LOUTER if the lhs alias is LOUTER to make
sure chains like t1 LOUTER t2 INNER t3 aren't generated. All new
joins are created as LOUTER if the join is nullable.
"""
reuse_aliases = [
a for a, j in self.alias_map.items()
if (reuse is None or a in reuse) and j.equals(join)
]
if reuse_aliases:
if join.table_alias in reuse_aliases:
reuse_alias = join.table_alias
else:
# Reuse the most recent alias of the joined table
# (a many-to-many relation may be joined multiple times).
reuse_alias = reuse_aliases[-1]
self.ref_alias(reuse_alias)
return reuse_alias
# No reuse is possible, so we need a new alias.
alias, _ = self.table_alias(join.table_name, create=True, filtered_relation=join.filtered_relation)
if join.join_type:
if self.alias_map[join.parent_alias].join_type == LOUTER or join.nullable:
join_type = LOUTER
else:
join_type = INNER
join.join_type = join_type
join.table_alias = alias
self.alias_map[alias] = join
return alias
def join_parent_model(self, opts, model, alias, seen):
"""
Make sure the given 'model' is joined in the query. If 'model' isn't
a parent of 'opts' or if it is None this method is a no-op.
The 'alias' is the root alias for starting the join, 'seen' is a dict
of model -> alias of existing joins. It must also contain a mapping
of None -> some alias. This will be returned in the no-op case.
"""
if model in seen:
return seen[model]
chain = opts.get_base_chain(model)
if not chain:
return alias
curr_opts = opts
for int_model in chain:
if int_model in seen:
curr_opts = int_model._meta
alias = seen[int_model]
continue
# Proxy model have elements in base chain
# with no parents, assign the new options
# object and skip to the next base in that
# case
if not curr_opts.parents[int_model]:
curr_opts = int_model._meta
continue
link_field = curr_opts.get_ancestor_link(int_model)
join_info = self.setup_joins([link_field.name], curr_opts, alias)
curr_opts = int_model._meta
alias = seen[int_model] = join_info.joins[-1]
return alias or seen[None]
def add_annotation(self, annotation, alias, is_summary=False, select=True):
"""Add a single annotation expression to the Query."""
annotation = annotation.resolve_expression(self, allow_joins=True, reuse=None,
summarize=is_summary)
if select:
self.append_annotation_mask([alias])
else:
self.set_annotation_mask(set(self.annotation_select).difference({alias}))
self.annotations[alias] = annotation
def resolve_expression(self, query, *args, **kwargs):
clone = self.clone()
# Subqueries need to use a different set of aliases than the outer query.
clone.bump_prefix(query)
clone.subquery = True
clone.where.resolve_expression(query, *args, **kwargs)
for key, value in clone.annotations.items():
resolved = value.resolve_expression(query, *args, **kwargs)
if hasattr(resolved, 'external_aliases'):
resolved.external_aliases.update(clone.external_aliases)
clone.annotations[key] = resolved
# Outer query's aliases are considered external.
for alias, table in query.alias_map.items():
clone.external_aliases[alias] = (
(isinstance(table, Join) and table.join_field.related_model._meta.db_table != alias) or
(isinstance(table, BaseTable) and table.table_name != table.table_alias)
)
return clone
def get_external_cols(self):
exprs = chain(self.annotations.values(), self.where.children)
return [
col for col in self._gen_cols(exprs, include_external=True)
if col.alias in self.external_aliases
]
def get_group_by_cols(self, alias=None):
if alias:
return [Ref(alias, self)]
external_cols = self.get_external_cols()
if any(col.possibly_multivalued for col in external_cols):
return [self]
return external_cols
def as_sql(self, compiler, connection):
# Some backends (e.g. Oracle) raise an error when a subquery contains
# unnecessary ORDER BY clause.
if (
self.subquery and
not connection.features.ignores_unnecessary_order_by_in_subqueries
):
self.clear_ordering(force=False)
sql, params = self.get_compiler(connection=connection).as_sql()
if self.subquery:
sql = '(%s)' % sql
return sql, params
def resolve_lookup_value(self, value, can_reuse, allow_joins):
if hasattr(value, 'resolve_expression'):
value = value.resolve_expression(
self, reuse=can_reuse, allow_joins=allow_joins,
)
elif isinstance(value, (list, tuple)):
# The items of the iterable may be expressions and therefore need
# to be resolved independently.
values = (
self.resolve_lookup_value(sub_value, can_reuse, allow_joins)
for sub_value in value
)
type_ = type(value)
if hasattr(type_, '_make'): # namedtuple
return type_(*values)
return type_(values)
return value
def solve_lookup_type(self, lookup):
"""
Solve the lookup type from the lookup (e.g.: 'foobar__id__icontains').
"""
lookup_splitted = lookup.split(LOOKUP_SEP)
if self.annotations:
expression, expression_lookups = refs_expression(lookup_splitted, self.annotations)
if expression:
return expression_lookups, (), expression
_, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta())
field_parts = lookup_splitted[0:len(lookup_splitted) - len(lookup_parts)]
if len(lookup_parts) > 1 and not field_parts:
raise FieldError(
'Invalid lookup "%s" for model %s".' %
(lookup, self.get_meta().model.__name__)
)
return lookup_parts, field_parts, False
def check_query_object_type(self, value, opts, field):
"""
Check whether the object passed while querying is of the correct type.
If not, raise a ValueError specifying the wrong object.
"""
if hasattr(value, '_meta'):
if not check_rel_lookup_compatibility(value._meta.model, opts, field):
raise ValueError(
'Cannot query "%s": Must be "%s" instance.' %
(value, opts.object_name))
def check_related_objects(self, field, value, opts):
"""Check the type of object passed to query relations."""
if field.is_relation:
# Check that the field and the queryset use the same model in a
# query like .filter(author=Author.objects.all()). For example, the
# opts would be Author's (from the author field) and value.model
# would be Author.objects.all() queryset's .model (Author also).
# The field is the related field on the lhs side.
if (isinstance(value, Query) and not value.has_select_fields and
not check_rel_lookup_compatibility(value.model, opts, field)):
raise ValueError(
'Cannot use QuerySet for "%s": Use a QuerySet for "%s".' %
(value.model._meta.object_name, opts.object_name)
)
elif hasattr(value, '_meta'):
self.check_query_object_type(value, opts, field)
elif hasattr(value, '__iter__'):
for v in value:
self.check_query_object_type(v, opts, field)
def check_filterable(self, expression):
"""Raise an error if expression cannot be used in a WHERE clause."""
if (
hasattr(expression, 'resolve_expression') and
not getattr(expression, 'filterable', True)
):
raise NotSupportedError(
expression.__class__.__name__ + ' is disallowed in the filter '
'clause.'
)
if hasattr(expression, 'get_source_expressions'):
for expr in expression.get_source_expressions():
self.check_filterable(expr)
def build_lookup(self, lookups, lhs, rhs):
"""
Try to extract transforms and lookup from given lhs.
The lhs value is something that works like SQLExpression.
The rhs value is what the lookup is going to compare against.
The lookups is a list of names to extract using get_lookup()
and get_transform().
"""
# __exact is the default lookup if one isn't given.
*transforms, lookup_name = lookups or ['exact']
for name in transforms:
lhs = self.try_transform(lhs, name)
# First try get_lookup() so that the lookup takes precedence if the lhs
# supports both transform and lookup for the name.
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
if lhs.field.is_relation:
raise FieldError('Related Field got invalid lookup: {}'.format(lookup_name))
# A lookup wasn't found. Try to interpret the name as a transform
# and do an Exact lookup against it.
lhs = self.try_transform(lhs, lookup_name)
lookup_name = 'exact'
lookup_class = lhs.get_lookup(lookup_name)
if not lookup_class:
return
lookup = lookup_class(lhs, rhs)
# Interpret '__exact=None' as the sql 'is NULL'; otherwise, reject all
# uses of None as a query value unless the lookup supports it.
if lookup.rhs is None and not lookup.can_use_none_as_rhs:
if lookup_name not in ('exact', 'iexact'):
raise ValueError("Cannot use None as a query value")
return lhs.get_lookup('isnull')(lhs, True)
# For Oracle '' is equivalent to null. The check must be done at this
# stage because join promotion can't be done in the compiler. Using
# DEFAULT_DB_ALIAS isn't nice but it's the best that can be done here.
# A similar thing is done in is_nullable(), too.
if (
lookup_name == 'exact' and
lookup.rhs == '' and
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls
):
return lhs.get_lookup('isnull')(lhs, True)
return lookup
def try_transform(self, lhs, name):
"""
Helper method for build_lookup(). Try to fetch and initialize
a transform for name parameter from lhs.
"""
transform_class = lhs.get_transform(name)
if transform_class:
return transform_class(lhs)
else:
output_field = lhs.output_field.__class__
suggested_lookups = difflib.get_close_matches(name, output_field.get_lookups())
if suggested_lookups:
suggestion = ', perhaps you meant %s?' % ' or '.join(suggested_lookups)
else:
suggestion = '.'
raise FieldError(
"Unsupported lookup '%s' for %s or join on the field not "
"permitted%s" % (name, output_field.__name__, suggestion)
)
def build_filter(self, filter_expr, branch_negated=False, current_negated=False,
can_reuse=None, allow_joins=True, split_subq=True,
check_filterable=True):
"""
Build a WhereNode for a single filter clause but don't add it
to this Query. Query.add_q() will then add this filter to the where
Node.
The 'branch_negated' tells us if the current branch contains any
negations. This will be used to determine if subqueries are needed.
The 'current_negated' is used to determine if the current filter is
negated or not and this will be used to determine if IS NULL filtering
is needed.
The difference between current_negated and branch_negated is that
branch_negated is set on first negation, but current_negated is
flipped for each negation.
Note that add_filter will not do any negating itself, that is done
upper in the code by add_q().
The 'can_reuse' is a set of reusable joins for multijoins.
The method will create a filter clause that can be added to the current
query. However, if the filter isn't added to the query then the caller
is responsible for unreffing the joins used.
"""
if isinstance(filter_expr, dict):
raise FieldError("Cannot parse keyword query as dict")
if isinstance(filter_expr, Q):
return self._add_q(
filter_expr,
branch_negated=branch_negated,
current_negated=current_negated,
used_aliases=can_reuse,
allow_joins=allow_joins,
split_subq=split_subq,
check_filterable=check_filterable,
)
if hasattr(filter_expr, 'resolve_expression'):
if not getattr(filter_expr, 'conditional', False):
raise TypeError('Cannot filter against a non-conditional expression.')
condition = filter_expr.resolve_expression(self, allow_joins=allow_joins)
if not isinstance(condition, Lookup):
condition = self.build_lookup(['exact'], condition, True)
return WhereNode([condition], connector=AND), []
arg, value = filter_expr
if not arg:
raise FieldError("Cannot parse keyword query %r" % arg)
lookups, parts, reffed_expression = self.solve_lookup_type(arg)
if check_filterable:
self.check_filterable(reffed_expression)
if not allow_joins and len(parts) > 1:
raise FieldError("Joined field references are not permitted in this query")
pre_joins = self.alias_refcount.copy()
value = self.resolve_lookup_value(value, can_reuse, allow_joins)
used_joins = {k for k, v in self.alias_refcount.items() if v > pre_joins.get(k, 0)}
if check_filterable:
self.check_filterable(value)
if reffed_expression:
condition = self.build_lookup(lookups, reffed_expression, value)
return WhereNode([condition], connector=AND), []
opts = self.get_meta()
alias = self.get_initial_alias()
allow_many = not branch_negated or not split_subq
try:
join_info = self.setup_joins(
parts, opts, alias, can_reuse=can_reuse, allow_many=allow_many,
)
# Prevent iterator from being consumed by check_related_objects()
if isinstance(value, Iterator):
value = list(value)
self.check_related_objects(join_info.final_field, value, join_info.opts)
# split_exclude() needs to know which joins were generated for the
# lookup parts
self._lookup_joins = join_info.joins
except MultiJoin as e:
return self.split_exclude(filter_expr, can_reuse, e.names_with_path)
# Update used_joins before trimming since they are reused to determine
# which joins could be later promoted to INNER.
used_joins.update(join_info.joins)
targets, alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if can_reuse is not None:
can_reuse.update(join_list)
if join_info.final_field.is_relation:
# No support for transforms for relational fields
num_lookups = len(lookups)
if num_lookups > 1:
raise FieldError('Related Field got invalid lookup: {}'.format(lookups[0]))
if len(targets) == 1:
col = self._get_col(targets[0], join_info.final_field, alias)
else:
col = MultiColSource(alias, targets, join_info.targets, join_info.final_field)
else:
col = self._get_col(targets[0], join_info.final_field, alias)
condition = self.build_lookup(lookups, col, value)
lookup_type = condition.lookup_name
clause = WhereNode([condition], connector=AND)
require_outer = lookup_type == 'isnull' and condition.rhs is True and not current_negated
if current_negated and (lookup_type != 'isnull' or condition.rhs is False) and condition.rhs is not None:
require_outer = True
if lookup_type != 'isnull':
# The condition added here will be SQL like this:
# NOT (col IS NOT NULL), where the first NOT is added in
# upper layers of code. The reason for addition is that if col
# is null, then col != someval will result in SQL "unknown"
# which isn't the same as in Python. The Python None handling
# is wanted, and it can be gotten by
# (col IS NULL OR col != someval)
# <=>
# NOT (col IS NOT NULL AND col = someval).
if (
self.is_nullable(targets[0]) or
self.alias_map[join_list[-1]].join_type == LOUTER
):
lookup_class = targets[0].get_lookup('isnull')
col = self._get_col(targets[0], join_info.targets[0], alias)
clause.add(lookup_class(col, False), AND)
# If someval is a nullable column, someval IS NOT NULL is
# added.
if isinstance(value, Col) and self.is_nullable(value.target):
lookup_class = value.target.get_lookup('isnull')
clause.add(lookup_class(value, False), AND)
return clause, used_joins if not require_outer else ()
def add_filter(self, filter_lhs, filter_rhs):
self.add_q(Q((filter_lhs, filter_rhs)))
def add_q(self, q_object):
"""
A preprocessor for the internal _add_q(). Responsible for doing final
join promotion.
"""
# For join promotion this case is doing an AND for the added q_object
# and existing conditions. So, any existing inner join forces the join
# type to remain inner. Existing outer joins can however be demoted.
# (Consider case where rel_a is LOUTER and rel_a__col=1 is added - if
# rel_a doesn't produce any rows, then the whole condition must fail.
# So, demotion is OK.
existing_inner = {a for a in self.alias_map if self.alias_map[a].join_type == INNER}
clause, _ = self._add_q(q_object, self.used_aliases)
if clause:
self.where.add(clause, AND)
self.demote_joins(existing_inner)
def build_where(self, filter_expr):
return self.build_filter(filter_expr, allow_joins=False)[0]
def clear_where(self):
self.where = WhereNode()
def _add_q(self, q_object, used_aliases, branch_negated=False,
current_negated=False, allow_joins=True, split_subq=True,
check_filterable=True):
"""Add a Q-object to the current filter."""
connector = q_object.connector
current_negated = current_negated ^ q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
joinpromoter = JoinPromoter(q_object.connector, len(q_object.children), current_negated)
for child in q_object.children:
child_clause, needed_inner = self.build_filter(
child, can_reuse=used_aliases, branch_negated=branch_negated,
current_negated=current_negated, allow_joins=allow_joins,
split_subq=split_subq, check_filterable=check_filterable,
)
joinpromoter.add_votes(needed_inner)
if child_clause:
target_clause.add(child_clause, connector)
needed_inner = joinpromoter.update_join_types(self)
return target_clause, needed_inner
def build_filtered_relation_q(self, q_object, reuse, branch_negated=False, current_negated=False):
"""Add a FilteredRelation object to the current filter."""
connector = q_object.connector
current_negated ^= q_object.negated
branch_negated = branch_negated or q_object.negated
target_clause = WhereNode(connector=connector, negated=q_object.negated)
for child in q_object.children:
if isinstance(child, Node):
child_clause = self.build_filtered_relation_q(
child, reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
)
else:
child_clause, _ = self.build_filter(
child, can_reuse=reuse, branch_negated=branch_negated,
current_negated=current_negated,
allow_joins=True, split_subq=False,
)
target_clause.add(child_clause, connector)
return target_clause
def add_filtered_relation(self, filtered_relation, alias):
filtered_relation.alias = alias
lookups = dict(get_children_from_q(filtered_relation.condition))
relation_lookup_parts, relation_field_parts, _ = self.solve_lookup_type(filtered_relation.relation_name)
if relation_lookup_parts:
raise ValueError(
"FilteredRelation's relation_name cannot contain lookups "
"(got %r)." % filtered_relation.relation_name
)
for lookup in chain(lookups):
lookup_parts, lookup_field_parts, _ = self.solve_lookup_type(lookup)
shift = 2 if not lookup_parts else 1
lookup_field_path = lookup_field_parts[:-shift]
for idx, lookup_field_part in enumerate(lookup_field_path):
if len(relation_field_parts) > idx:
if relation_field_parts[idx] != lookup_field_part:
raise ValueError(
"FilteredRelation's condition doesn't support "
"relations outside the %r (got %r)."
% (filtered_relation.relation_name, lookup)
)
else:
raise ValueError(
"FilteredRelation's condition doesn't support nested "
"relations deeper than the relation_name (got %r for "
"%r)." % (lookup, filtered_relation.relation_name)
)
self._filtered_relations[filtered_relation.alias] = filtered_relation
def names_to_path(self, names, opts, allow_many=True, fail_on_missing=False):
"""
Walk the list of names and turns them into PathInfo tuples. A single
name in 'names' can generate multiple PathInfos (m2m, for example).
'names' is the path of names to travel, 'opts' is the model Options we
start the name resolving from, 'allow_many' is as for setup_joins().
If fail_on_missing is set to True, then a name that can't be resolved
will generate a FieldError.
Return a list of PathInfo tuples. In addition return the final field
(the last used join field) and target (which is a field guaranteed to
contain the same value as the final field). Finally, return those names
that weren't found (which are likely transforms and the final lookup).
"""
path, names_with_path = [], []
for pos, name in enumerate(names):
cur_names_with_path = (name, [])
if name == 'pk':
name = opts.pk.name
field = None
filtered_relation = None
try:
field = opts.get_field(name)
except FieldDoesNotExist:
if name in self.annotation_select:
field = self.annotation_select[name].output_field
elif name in self._filtered_relations and pos == 0:
filtered_relation = self._filtered_relations[name]
if LOOKUP_SEP in filtered_relation.relation_name:
parts = filtered_relation.relation_name.split(LOOKUP_SEP)
filtered_relation_path, field, _, _ = self.names_to_path(
parts, opts, allow_many, fail_on_missing,
)
path.extend(filtered_relation_path[:-1])
else:
field = opts.get_field(filtered_relation.relation_name)
if field is not None:
# Fields that contain one-to-many relations with a generic
# model (like a GenericForeignKey) cannot generate reverse
# relations and therefore cannot be used for reverse querying.
if field.is_relation and not field.related_model:
raise FieldError(
"Field %r does not generate an automatic reverse "
"relation and therefore cannot be used for reverse "
"querying. If it is a GenericForeignKey, consider "
"adding a GenericRelation." % name
)
try:
model = field.model._meta.concrete_model
except AttributeError:
# QuerySet.annotate() may introduce fields that aren't
# attached to a model.
model = None
else:
# We didn't find the current field, so move position back
# one step.
pos -= 1
if pos == -1 or fail_on_missing:
available = sorted([
*get_field_names_from_opts(opts),
*self.annotation_select,
*self._filtered_relations,
])
raise FieldError("Cannot resolve keyword '%s' into field. "
"Choices are: %s" % (name, ", ".join(available)))
break
# Check if we need any joins for concrete inheritance cases (the
# field lives in parent, but we are currently in one of its
# children)
if model is not opts.model:
path_to_parent = opts.get_path_to_parent(model)
if path_to_parent:
path.extend(path_to_parent)
cur_names_with_path[1].extend(path_to_parent)
opts = path_to_parent[-1].to_opts
if hasattr(field, 'path_infos'):
if filtered_relation:
pathinfos = field.get_path_info(filtered_relation)
else:
pathinfos = field.path_infos
if not allow_many:
for inner_pos, p in enumerate(pathinfos):
if p.m2m:
cur_names_with_path[1].extend(pathinfos[0:inner_pos + 1])
names_with_path.append(cur_names_with_path)
raise MultiJoin(pos + 1, names_with_path)
last = pathinfos[-1]
path.extend(pathinfos)
final_field = last.join_field
opts = last.to_opts
targets = last.target_fields
cur_names_with_path[1].extend(pathinfos)
names_with_path.append(cur_names_with_path)
else:
# Local non-relational field.
final_field = field
targets = (field,)
if fail_on_missing and pos + 1 != len(names):
raise FieldError(
"Cannot resolve keyword %r into field. Join on '%s'"
" not permitted." % (names[pos + 1], name))
break
return path, final_field, targets, names[pos + 1:]
def setup_joins(self, names, opts, alias, can_reuse=None, allow_many=True):
"""
Compute the necessary table joins for the passage through the fields
given in 'names'. 'opts' is the Options class for the current model
(which gives the table we are starting from), 'alias' is the alias for
the table to start the joining from.
The 'can_reuse' defines the reverse foreign key joins we can reuse. It
can be None in which case all joins are reusable or a set of aliases
that can be reused. Note that non-reverse foreign keys are always
reusable when using setup_joins().
If 'allow_many' is False, then any reverse foreign key seen will
generate a MultiJoin exception.
Return the final field involved in the joins, the target field (used
for any 'where' constraint), the final 'opts' value, the joins, the
field path traveled to generate the joins, and a transform function
that takes a field and alias and is equivalent to `field.get_col(alias)`
in the simple case but wraps field transforms if they were included in
names.
The target field is the field containing the concrete value. Final
field can be something different, for example foreign key pointing to
that value. Final field is needed for example in some value
conversions (convert 'obj' in fk__id=obj to pk val using the foreign
key field for example).
"""
joins = [alias]
# The transform can't be applied yet, as joins must be trimmed later.
# To avoid making every caller of this method look up transforms
# directly, compute transforms here and create a partial that converts
# fields to the appropriate wrapped version.
def final_transformer(field, alias):
if not self.alias_cols:
alias = None
return field.get_col(alias)
# Try resolving all the names as fields first. If there's an error,
# treat trailing names as lookups until a field can be resolved.
last_field_exception = None
for pivot in range(len(names), 0, -1):
try:
path, final_field, targets, rest = self.names_to_path(
names[:pivot], opts, allow_many, fail_on_missing=True,
)
except FieldError as exc:
if pivot == 1:
# The first item cannot be a lookup, so it's safe
# to raise the field error here.
raise
else:
last_field_exception = exc
else:
# The transforms are the remaining items that couldn't be
# resolved into fields.
transforms = names[pivot:]
break
for name in transforms:
def transform(field, alias, *, name, previous):
try:
wrapped = previous(field, alias)
return self.try_transform(wrapped, name)
except FieldError:
# FieldError is raised if the transform doesn't exist.
if isinstance(final_field, Field) and last_field_exception:
raise last_field_exception
else:
raise
final_transformer = functools.partial(transform, name=name, previous=final_transformer)
# Then, add the path to the query's joins. Note that we can't trim
# joins at this stage - we will need the information about join type
# of the trimmed joins.
for join in path:
if join.filtered_relation:
filtered_relation = join.filtered_relation.clone()
table_alias = filtered_relation.alias
else:
filtered_relation = None
table_alias = None
opts = join.to_opts
if join.direct:
nullable = self.is_nullable(join.join_field)
else:
nullable = True
connection = self.join_class(
opts.db_table, alias, table_alias, INNER, join.join_field,
nullable, filtered_relation=filtered_relation,
)
reuse = can_reuse if join.m2m else None
alias = self.join(connection, reuse=reuse)
joins.append(alias)
if filtered_relation:
filtered_relation.path = joins[:]
return JoinInfo(final_field, targets, opts, joins, path, final_transformer)
def trim_joins(self, targets, joins, path):
"""
The 'target' parameter is the final field being joined to, 'joins'
is the full list of join aliases. The 'path' contain the PathInfos
used to create the joins.
Return the final target field and table alias and the new active
joins.
Always trim any direct join if the target column is already in the
previous table. Can't trim reverse joins as it's unknown if there's
anything on the other side of the join.
"""
joins = joins[:]
for pos, info in enumerate(reversed(path)):
if len(joins) == 1 or not info.direct:
break
if info.filtered_relation:
break
join_targets = {t.column for t in info.join_field.foreign_related_fields}
cur_targets = {t.column for t in targets}
if not cur_targets.issubset(join_targets):
break
targets_dict = {r[1].column: r[0] for r in info.join_field.related_fields if r[1].column in cur_targets}
targets = tuple(targets_dict[t.column] for t in targets)
self.unref_alias(joins.pop())
return targets, joins[-1], joins
@classmethod
def _gen_cols(cls, exprs, include_external=False):
for expr in exprs:
if isinstance(expr, Col):
yield expr
elif include_external and callable(getattr(expr, 'get_external_cols', None)):
yield from expr.get_external_cols()
elif hasattr(expr, 'get_source_expressions'):
yield from cls._gen_cols(
expr.get_source_expressions(),
include_external=include_external,
)
@classmethod
def _gen_col_aliases(cls, exprs):
yield from (expr.alias for expr in cls._gen_cols(exprs))
def resolve_ref(self, name, allow_joins=True, reuse=None, summarize=False):
annotation = self.annotations.get(name)
if annotation is not None:
if not allow_joins:
for alias in self._gen_col_aliases([annotation]):
if isinstance(self.alias_map[alias], Join):
raise FieldError(
'Joined field references are not permitted in '
'this query'
)
if summarize:
# Summarize currently means we are doing an aggregate() query
# which is executed as a wrapped subquery if any of the
# aggregate() elements reference an existing annotation. In
# that case we need to return a Ref to the subquery's annotation.
if name not in self.annotation_select:
raise FieldError(
"Cannot aggregate over the '%s' alias. Use annotate() "
"to promote it." % name
)
return Ref(name, self.annotation_select[name])
else:
return annotation
else:
field_list = name.split(LOOKUP_SEP)
annotation = self.annotations.get(field_list[0])
if annotation is not None:
for transform in field_list[1:]:
annotation = self.try_transform(annotation, transform)
return annotation
join_info = self.setup_joins(field_list, self.get_meta(), self.get_initial_alias(), can_reuse=reuse)
targets, final_alias, join_list = self.trim_joins(join_info.targets, join_info.joins, join_info.path)
if not allow_joins and len(join_list) > 1:
raise FieldError('Joined field references are not permitted in this query')
if len(targets) > 1:
raise FieldError("Referencing multicolumn fields with F() objects "
"isn't supported")
# Verify that the last lookup in name is a field or a transform:
# transform_function() raises FieldError if not.
transform = join_info.transform_function(targets[0], final_alias)
if reuse is not None:
reuse.update(join_list)
return transform
def split_exclude(self, filter_expr, can_reuse, names_with_path):
"""
When doing an exclude against any kind of N-to-many relation, we need
to use a subquery. This method constructs the nested query, given the
original exclude filter (filter_expr) and the portion up to the first
N-to-many relation field.
For example, if the origin filter is ~Q(child__name='foo'), filter_expr
is ('child__name', 'foo') and can_reuse is a set of joins usable for
filters in the original query.
We will turn this into equivalent of:
WHERE NOT EXISTS(
SELECT 1
FROM child
WHERE name = 'foo' AND child.parent_id = parent.id
LIMIT 1
)
"""
# Generate the inner query.
query = self.__class__(self.model)
query._filtered_relations = self._filtered_relations
filter_lhs, filter_rhs = filter_expr
if isinstance(filter_rhs, OuterRef):
filter_rhs = OuterRef(filter_rhs)
elif isinstance(filter_rhs, F):
filter_rhs = OuterRef(filter_rhs.name)
query.add_filter(filter_lhs, filter_rhs)
query.clear_ordering(force=True)
# Try to have as simple as possible subquery -> trim leading joins from
# the subquery.
trimmed_prefix, contains_louter = query.trim_start(names_with_path)
col = query.select[0]
select_field = col.target
alias = col.alias
if alias in can_reuse:
pk = select_field.model._meta.pk
# Need to add a restriction so that outer query's filters are in effect for
# the subquery, too.
query.bump_prefix(self)
lookup_class = select_field.get_lookup('exact')
# Note that the query.select[0].alias is different from alias
# due to bump_prefix above.
lookup = lookup_class(pk.get_col(query.select[0].alias),
pk.get_col(alias))
query.where.add(lookup, AND)
query.external_aliases[alias] = True
lookup_class = select_field.get_lookup('exact')
lookup = lookup_class(col, ResolvedOuterRef(trimmed_prefix))
query.where.add(lookup, AND)
condition, needed_inner = self.build_filter(Exists(query))
if contains_louter:
or_null_condition, _ = self.build_filter(
('%s__isnull' % trimmed_prefix, True),
current_negated=True, branch_negated=True, can_reuse=can_reuse)
condition.add(or_null_condition, OR)
# Note that the end result will be:
# (outercol NOT IN innerq AND outercol IS NOT NULL) OR outercol IS NULL.
# This might look crazy but due to how IN works, this seems to be
# correct. If the IS NOT NULL check is removed then outercol NOT
# IN will return UNKNOWN. If the IS NULL check is removed, then if
# outercol IS NULL we will not match the row.
return condition, needed_inner
def set_empty(self):
self.where.add(NothingNode(), AND)
for query in self.combined_queries:
query.set_empty()
def is_empty(self):
return any(isinstance(c, NothingNode) for c in self.where.children)
def set_limits(self, low=None, high=None):
"""
Adjust the limits on the rows retrieved. Use low/high to set these,
as it makes it more Pythonic to read and write. When the SQL query is
created, convert them to the appropriate offset and limit values.
Apply any limits passed in here to the existing constraints. Add low
to the current low value and clamp both to any existing high value.
"""
if high is not None:
if self.high_mark is not None:
self.high_mark = min(self.high_mark, self.low_mark + high)
else:
self.high_mark = self.low_mark + high
if low is not None:
if self.high_mark is not None:
self.low_mark = min(self.high_mark, self.low_mark + low)
else:
self.low_mark = self.low_mark + low
if self.low_mark == self.high_mark:
self.set_empty()
def clear_limits(self):
"""Clear any existing limits."""
self.low_mark, self.high_mark = 0, None
@property
def is_sliced(self):
return self.low_mark != 0 or self.high_mark is not None
def has_limit_one(self):
return self.high_mark is not None and (self.high_mark - self.low_mark) == 1
def can_filter(self):
"""
Return True if adding filters to this instance is still possible.
Typically, this means no limits or offsets have been put on the results.
"""
return not self.is_sliced
def clear_select_clause(self):
"""Remove all fields from SELECT clause."""
self.select = ()
self.default_cols = False
self.select_related = False
self.set_extra_mask(())
self.set_annotation_mask(())
def clear_select_fields(self):
"""
Clear the list of fields to select (but not extra_select columns).
Some queryset types completely replace any existing list of select
columns.
"""
self.select = ()
self.values_select = ()
def add_select_col(self, col, name):
self.select += col,
self.values_select += name,
def set_select(self, cols):
self.default_cols = False
self.select = tuple(cols)
def add_distinct_fields(self, *field_names):
"""
Add and resolve the given fields to the query's "distinct on" clause.
"""
self.distinct_fields = field_names
self.distinct = True
def add_fields(self, field_names, allow_m2m=True):
"""
Add the given (model) fields to the select set. Add the field names in
the order specified.
"""
alias = self.get_initial_alias()
opts = self.get_meta()
try:
cols = []
for name in field_names:
# Join promotion note - we must not remove any rows here, so
# if there is no existing joins, use outer join.
join_info = self.setup_joins(name.split(LOOKUP_SEP), opts, alias, allow_many=allow_m2m)
targets, final_alias, joins = self.trim_joins(
join_info.targets,
join_info.joins,
join_info.path,
)
for target in targets:
cols.append(join_info.transform_function(target, final_alias))
if cols:
self.set_select(cols)
except MultiJoin:
raise FieldError("Invalid field name: '%s'" % name)
except FieldError:
if LOOKUP_SEP in name:
# For lookups spanning over relationships, show the error
# from the model on which the lookup failed.
raise
elif name in self.annotations:
raise FieldError(
"Cannot select the '%s' alias. Use annotate() to promote "
"it." % name
)
else:
names = sorted([
*get_field_names_from_opts(opts), *self.extra,
*self.annotation_select, *self._filtered_relations
])
raise FieldError("Cannot resolve keyword %r into field. "
"Choices are: %s" % (name, ", ".join(names)))
def add_ordering(self, *ordering):
"""
Add items from the 'ordering' sequence to the query's "order by"
clause. These items are either field names (not column names) --
possibly with a direction prefix ('-' or '?') -- or OrderBy
expressions.
If 'ordering' is empty, clear all ordering from the query.
"""
errors = []
for item in ordering:
if isinstance(item, str):
if item == '?':
continue
if item.startswith('-'):
item = item[1:]
if item in self.annotations:
continue
if self.extra and item in self.extra:
continue
# names_to_path() validates the lookup. A descriptive
# FieldError will be raise if it's not.
self.names_to_path(item.split(LOOKUP_SEP), self.model._meta)
elif not hasattr(item, 'resolve_expression'):
errors.append(item)
if getattr(item, 'contains_aggregate', False):
raise FieldError(
'Using an aggregate in order_by() without also including '
'it in annotate() is not allowed: %s' % item
)
if errors:
raise FieldError('Invalid order_by arguments: %s' % errors)
if ordering:
self.order_by += ordering
else:
self.default_ordering = False
def clear_ordering(self, force=False, clear_default=True):
"""
Remove any ordering settings if the current query allows it without
side effects, set 'force' to True to clear the ordering regardless.
If 'clear_default' is True, there will be no ordering in the resulting
query (not even the model's default).
"""
if not force and (self.is_sliced or self.distinct_fields or self.select_for_update):
return
self.order_by = ()
self.extra_order_by = ()
if clear_default:
self.default_ordering = False
def set_group_by(self, allow_aliases=True):
"""
Expand the GROUP BY clause required by the query.
This will usually be the set of all non-aggregate fields in the
return data. If the database backend supports grouping by the
primary key, and the query would be equivalent, the optimization
will be made automatically.
"""
# Column names from JOINs to check collisions with aliases.
if allow_aliases:
column_names = set()
seen_models = set()
for join in list(self.alias_map.values())[1:]: # Skip base table.
model = join.join_field.related_model
if model not in seen_models:
column_names.update({
field.column
for field in model._meta.local_concrete_fields
})
seen_models.add(model)
group_by = list(self.select)
if self.annotation_select:
for alias, annotation in self.annotation_select.items():
if not allow_aliases or alias in column_names:
alias = None
group_by_cols = annotation.get_group_by_cols(alias=alias)
group_by.extend(group_by_cols)
self.group_by = tuple(group_by)
def add_select_related(self, fields):
"""
Set up the select_related data structure so that we only select
certain related models (as opposed to all models, when
self.select_related=True).
"""
if isinstance(self.select_related, bool):
field_dict = {}
else:
field_dict = self.select_related
for field in fields:
d = field_dict
for part in field.split(LOOKUP_SEP):
d = d.setdefault(part, {})
self.select_related = field_dict
def add_extra(self, select, select_params, where, params, tables, order_by):
"""
Add data to the various extra_* attributes for user-created additions
to the query.
"""
if select:
# We need to pair any placeholder markers in the 'select'
# dictionary with their parameters in 'select_params' so that
# subsequent updates to the select dictionary also adjust the
# parameters appropriately.
select_pairs = {}
if select_params:
param_iter = iter(select_params)
else:
param_iter = iter([])
for name, entry in select.items():
entry = str(entry)
entry_params = []
pos = entry.find("%s")
while pos != -1:
if pos == 0 or entry[pos - 1] != '%':
entry_params.append(next(param_iter))
pos = entry.find("%s", pos + 2)
select_pairs[name] = (entry, entry_params)
self.extra.update(select_pairs)
if where or params:
self.where.add(ExtraWhere(where, params), AND)
if tables:
self.extra_tables += tuple(tables)
if order_by:
self.extra_order_by = order_by
def clear_deferred_loading(self):
"""Remove any fields from the deferred loading set."""
self.deferred_loading = (frozenset(), True)
def add_deferred_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
exclude from loading from the database when automatic column selection
is done. Add the new field names to any existing field names that
are deferred (or removed from any existing field names that are marked
as the only ones for immediate loading).
"""
# Fields on related models are stored in the literal double-underscore
# format, so that we can use a set datastructure. We do the foo__bar
# splitting and handling when computing the SQL column names (as part of
# get_columns()).
existing, defer = self.deferred_loading
if defer:
# Add to existing deferred names.
self.deferred_loading = existing.union(field_names), True
else:
# Remove names from the set of any existing "immediate load" names.
if new_existing := existing.difference(field_names):
self.deferred_loading = new_existing, False
else:
self.clear_deferred_loading()
if new_only := set(field_names).difference(existing):
self.deferred_loading = new_only, True
def add_immediate_loading(self, field_names):
"""
Add the given list of model field names to the set of fields to
retrieve when the SQL is executed ("immediate loading" fields). The
field names replace any existing immediate loading field names. If
there are field names already specified for deferred loading, remove
those names from the new field_names before storing the new names
for immediate loading. (That is, immediate loading overrides any
existing immediate values, but respects existing deferrals.)
"""
existing, defer = self.deferred_loading
field_names = set(field_names)
if 'pk' in field_names:
field_names.remove('pk')
field_names.add(self.get_meta().pk.name)
if defer:
# Remove any existing deferred names from the current set before
# setting the new names.
self.deferred_loading = field_names.difference(existing), False
else:
# Replace any existing "immediate load" field names.
self.deferred_loading = frozenset(field_names), False
def get_loaded_field_names(self):
"""
If any fields are marked to be deferred, return a dictionary mapping
models to a set of names in those fields that will be loaded. If a
model is not in the returned dictionary, none of its fields are
deferred.
If no fields are marked for deferral, return an empty dictionary.
"""
# We cache this because we call this function multiple times
# (compiler.fill_related_selections, query.iterator)
try:
return self._loaded_field_names_cache
except AttributeError:
collection = {}
self.deferred_to_data(collection, self.get_loaded_field_names_cb)
self._loaded_field_names_cache = collection
return collection
def get_loaded_field_names_cb(self, target, model, fields):
"""Callback used by get_deferred_field_names()."""
target[model] = {f.attname for f in fields}
def set_annotation_mask(self, names):
"""Set the mask of annotations that will be returned by the SELECT."""
if names is None:
self.annotation_select_mask = None
else:
self.annotation_select_mask = set(names)
self._annotation_select_cache = None
def append_annotation_mask(self, names):
if self.annotation_select_mask is not None:
self.set_annotation_mask(self.annotation_select_mask.union(names))
def set_extra_mask(self, names):
"""
Set the mask of extra select items that will be returned by SELECT.
Don't remove them from the Query since they might be used later.
"""
if names is None:
self.extra_select_mask = None
else:
self.extra_select_mask = set(names)
self._extra_select_cache = None
def set_values(self, fields):
self.select_related = False
self.clear_deferred_loading()
self.clear_select_fields()
if fields:
field_names = []
extra_names = []
annotation_names = []
if not self.extra and not self.annotations:
# Shortcut - if there are no extra or annotations, then
# the values() clause must be just field names.
field_names = list(fields)
else:
self.default_cols = False
for f in fields:
if f in self.extra_select:
extra_names.append(f)
elif f in self.annotation_select:
annotation_names.append(f)
else:
field_names.append(f)
self.set_extra_mask(extra_names)
self.set_annotation_mask(annotation_names)
selected = frozenset(field_names + extra_names + annotation_names)
else:
field_names = [f.attname for f in self.model._meta.concrete_fields]
selected = frozenset(field_names)
# Selected annotations must be known before setting the GROUP BY
# clause.
if self.group_by is True:
self.add_fields((f.attname for f in self.model._meta.concrete_fields), False)
# Disable GROUP BY aliases to avoid orphaning references to the
# SELECT clause which is about to be cleared.
self.set_group_by(allow_aliases=False)
self.clear_select_fields()
elif self.group_by:
# Resolve GROUP BY annotation references if they are not part of
# the selected fields anymore.
group_by = []
for expr in self.group_by:
if isinstance(expr, Ref) and expr.refs not in selected:
expr = self.annotations[expr.refs]
group_by.append(expr)
self.group_by = tuple(group_by)
self.values_select = tuple(field_names)
self.add_fields(field_names, True)
@property
def annotation_select(self):
"""
Return the dictionary of aggregate columns that are not masked and
should be used in the SELECT clause. Cache this result for performance.
"""
if self._annotation_select_cache is not None:
return self._annotation_select_cache
elif not self.annotations:
return {}
elif self.annotation_select_mask is not None:
self._annotation_select_cache = {
k: v for k, v in self.annotations.items()
if k in self.annotation_select_mask
}
return self._annotation_select_cache
else:
return self.annotations
@property
def extra_select(self):
if self._extra_select_cache is not None:
return self._extra_select_cache
if not self.extra:
return {}
elif self.extra_select_mask is not None:
self._extra_select_cache = {
k: v for k, v in self.extra.items()
if k in self.extra_select_mask
}
return self._extra_select_cache
else:
return self.extra
def trim_start(self, names_with_path):
"""
Trim joins from the start of the join path. The candidates for trim
are the PathInfos in names_with_path structure that are m2m joins.
Also set the select column so the start matches the join.
This method is meant to be used for generating the subquery joins &
cols in split_exclude().
Return a lookup usable for doing outerq.filter(lookup=self) and a
boolean indicating if the joins in the prefix contain a LEFT OUTER join.
_"""
all_paths = []
for _, paths in names_with_path:
all_paths.extend(paths)
contains_louter = False
# Trim and operate only on tables that were generated for
# the lookup part of the query. That is, avoid trimming
# joins generated for F() expressions.
lookup_tables = [
t for t in self.alias_map
if t in self._lookup_joins or t == self.base_table
]
for trimmed_paths, path in enumerate(all_paths):
if path.m2m:
break
if self.alias_map[lookup_tables[trimmed_paths + 1]].join_type == LOUTER:
contains_louter = True
alias = lookup_tables[trimmed_paths]
self.unref_alias(alias)
# The path.join_field is a Rel, lets get the other side's field
join_field = path.join_field.field
# Build the filter prefix.
paths_in_prefix = trimmed_paths
trimmed_prefix = []
for name, path in names_with_path:
if paths_in_prefix - len(path) < 0:
break
trimmed_prefix.append(name)
paths_in_prefix -= len(path)
trimmed_prefix.append(
join_field.foreign_related_fields[0].name)
trimmed_prefix = LOOKUP_SEP.join(trimmed_prefix)
# Lets still see if we can trim the first join from the inner query
# (that is, self). We can't do this for:
# - LEFT JOINs because we would miss those rows that have nothing on
# the outer side,
# - INNER JOINs from filtered relations because we would miss their
# filters.
first_join = self.alias_map[lookup_tables[trimmed_paths + 1]]
if first_join.join_type != LOUTER and not first_join.filtered_relation:
select_fields = [r[0] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths + 1]
self.unref_alias(lookup_tables[trimmed_paths])
extra_restriction = join_field.get_extra_restriction(None, lookup_tables[trimmed_paths + 1])
if extra_restriction:
self.where.add(extra_restriction, AND)
else:
# TODO: It might be possible to trim more joins from the start of the
# inner query if it happens to have a longer join chain containing the
# values in select_fields. Lets punt this one for now.
select_fields = [r[1] for r in join_field.related_fields]
select_alias = lookup_tables[trimmed_paths]
# The found starting point is likely a join_class instead of a
# base_table_class reference. But the first entry in the query's FROM
# clause must not be a JOIN.
for table in self.alias_map:
if self.alias_refcount[table] > 0:
self.alias_map[table] = self.base_table_class(
self.alias_map[table].table_name,
table,
)
break
self.set_select([f.get_col(select_alias) for f in select_fields])
return trimmed_prefix, contains_louter
def is_nullable(self, field):
"""
Check if the given field should be treated as nullable.
Some backends treat '' as null and Django treats such fields as
nullable for those backends. In such situations field.null can be
False even if we should treat the field as nullable.
"""
# We need to use DEFAULT_DB_ALIAS here, as QuerySet does not have
# (nor should it have) knowledge of which connection is going to be
# used. The proper fix would be to defer all decisions where
# is_nullable() is needed to the compiler stage, but that is not easy
# to do currently.
return field.null or (
field.empty_strings_allowed and
connections[DEFAULT_DB_ALIAS].features.interprets_empty_strings_as_nulls
)
def get_order_dir(field, default='ASC'):
"""
Return the field name and direction for an order specification. For
example, '-foo' is returned as ('foo', 'DESC').
The 'default' param is used to indicate which way no prefix (or a '+'
prefix) should sort. The '-' prefix always sorts the opposite way.
"""
dirn = ORDER_DIR[default]
if field[0] == '-':
return field[1:], dirn[1]
return field, dirn[0]
def add_to_dict(data, key, value):
"""
Add "value" to the set of values for "key", whether or not "key" already
exists.
"""
if key in data:
data[key].add(value)
else:
data[key] = {value}
def is_reverse_o2o(field):
"""
Check if the given field is reverse-o2o. The field is expected to be some
sort of relation field or related object.
"""
return field.is_relation and field.one_to_one and not field.concrete
class JoinPromoter:
"""
A class to abstract away join promotion problems for complex filter
conditions.
"""
def __init__(self, connector, num_children, negated):
self.connector = connector
self.negated = negated
if self.negated:
if connector == AND:
self.effective_connector = OR
else:
self.effective_connector = AND
else:
self.effective_connector = self.connector
self.num_children = num_children
# Maps of table alias to how many times it is seen as required for
# inner and/or outer joins.
self.votes = Counter()
def __repr__(self):
return (
f'{self.__class__.__qualname__}(connector={self.connector!r}, '
f'num_children={self.num_children!r}, negated={self.negated!r})'
)
def add_votes(self, votes):
"""
Add single vote per item to self.votes. Parameter can be any
iterable.
"""
self.votes.update(votes)
def update_join_types(self, query):
"""
Change join types so that the generated query is as efficient as
possible, but still correct. So, change as many joins as possible
to INNER, but don't make OUTER joins INNER if that could remove
results from the query.
"""
to_promote = set()
to_demote = set()
# The effective_connector is used so that NOT (a AND b) is treated
# similarly to (a OR b) for join promotion.
for table, votes in self.votes.items():
# We must use outer joins in OR case when the join isn't contained
# in all of the joins. Otherwise the INNER JOIN itself could remove
# valid results. Consider the case where a model with rel_a and
# rel_b relations is queried with rel_a__col=1 | rel_b__col=2. Now,
# if rel_a join doesn't produce any results is null (for example
# reverse foreign key or null value in direct foreign key), and
# there is a matching row in rel_b with col=2, then an INNER join
# to rel_a would remove a valid match from the query. So, we need
# to promote any existing INNER to LOUTER (it is possible this
# promotion in turn will be demoted later on).
if self.effective_connector == 'OR' and votes < self.num_children:
to_promote.add(table)
# If connector is AND and there is a filter that can match only
# when there is a joinable row, then use INNER. For example, in
# rel_a__col=1 & rel_b__col=2, if either of the rels produce NULL
# as join output, then the col=1 or col=2 can't match (as
# NULL=anything is always false).
# For the OR case, if all children voted for a join to be inner,
# then we can use INNER for the join. For example:
# (rel_a__col__icontains=Alex | rel_a__col__icontains=Russell)
# then if rel_a doesn't produce any rows, the whole condition
# can't match. Hence we can safely use INNER join.
if self.effective_connector == 'AND' or (
self.effective_connector == 'OR' and votes == self.num_children):
to_demote.add(table)
# Finally, what happens in cases where we have:
# (rel_a__col=1|rel_b__col=2) & rel_a__col__gte=0
# Now, we first generate the OR clause, and promote joins for it
# in the first if branch above. Both rel_a and rel_b are promoted
# to LOUTER joins. After that we do the AND case. The OR case
# voted no inner joins but the rel_a__col__gte=0 votes inner join
# for rel_a. We demote it back to INNER join (in AND case a single
# vote is enough). The demotion is OK, if rel_a doesn't produce
# rows, then the rel_a__col__gte=0 clause can't be true, and thus
# the whole clause must be false. So, it is safe to use INNER
# join.
# Note that in this example we could just as well have the __gte
# clause and the OR clause swapped. Or we could replace the __gte
# clause with an OR clause containing rel_a__col=1|rel_a__col=2,
# and again we could safely demote to INNER.
query.promote_joins(to_promote)
query.demote_joins(to_demote)
return to_demote
|
7610cda0ae4ecc3c1bc3454bf45c022dca3d200c95128eb28359a3f24c3d4de2 | import collections
import json
import re
from functools import partial
from itertools import chain
from django.core.exceptions import EmptyResultSet, FieldError
from django.db import DatabaseError, NotSupportedError
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import F, OrderBy, RawSQL, Ref, Value
from django.db.models.functions import Cast, Random
from django.db.models.query_utils import select_related_descend
from django.db.models.sql.constants import (
CURSOR, GET_ITERATOR_CHUNK_SIZE, MULTI, NO_RESULTS, ORDER_DIR, SINGLE,
)
from django.db.models.sql.query import Query, get_order_dir
from django.db.transaction import TransactionManagementError
from django.utils.functional import cached_property
from django.utils.hashable import make_hashable
from django.utils.regex_helper import _lazy_re_compile
class SQLCompiler:
# Multiline ordering SQL clause may appear from RawSQL.
ordering_parts = _lazy_re_compile(
r'^(.*)\s(?:ASC|DESC).*',
re.MULTILINE | re.DOTALL,
)
def __init__(self, query, connection, using, elide_empty=True):
self.query = query
self.connection = connection
self.using = using
# Some queries, e.g. coalesced aggregation, need to be executed even if
# they would return an empty result set.
self.elide_empty = elide_empty
self.quote_cache = {'*': '*'}
# The select, klass_info, and annotations are needed by QuerySet.iterator()
# these are set as a side-effect of executing the query. Note that we calculate
# separately a list of extra select columns needed for grammatical correctness
# of the query, but these columns are not included in self.select.
self.select = None
self.annotation_col_map = None
self.klass_info = None
self._meta_ordering = None
def __repr__(self):
return (
f'<{self.__class__.__qualname__} '
f'model={self.query.model.__qualname__} '
f'connection={self.connection!r} using={self.using!r}>'
)
def setup_query(self):
if all(self.query.alias_refcount[a] == 0 for a in self.query.alias_map):
self.query.get_initial_alias()
self.select, self.klass_info, self.annotation_col_map = self.get_select()
self.col_count = len(self.select)
def pre_sql_setup(self):
"""
Do any necessary class setup immediately prior to producing SQL. This
is for things that can't necessarily be done in __init__ because we
might not have all the pieces in place at that time.
"""
self.setup_query()
order_by = self.get_order_by()
self.where, self.having = self.query.where.split_having()
extra_select = self.get_extra_select(order_by, self.select)
self.has_extra_select = bool(extra_select)
group_by = self.get_group_by(self.select + extra_select, order_by)
return extra_select, order_by, group_by
def get_group_by(self, select, order_by):
"""
Return a list of 2-tuples of form (sql, params).
The logic of what exactly the GROUP BY clause contains is hard
to describe in other words than "if it passes the test suite,
then it is correct".
"""
# Some examples:
# SomeModel.objects.annotate(Count('somecol'))
# GROUP BY: all fields of the model
#
# SomeModel.objects.values('name').annotate(Count('somecol'))
# GROUP BY: name
#
# SomeModel.objects.annotate(Count('somecol')).values('name')
# GROUP BY: all cols of the model
#
# SomeModel.objects.values('name', 'pk').annotate(Count('somecol')).values('pk')
# GROUP BY: name, pk
#
# SomeModel.objects.values('name').annotate(Count('somecol')).values('pk')
# GROUP BY: name, pk
#
# In fact, the self.query.group_by is the minimal set to GROUP BY. It
# can't be ever restricted to a smaller set, but additional columns in
# HAVING, ORDER BY, and SELECT clauses are added to it. Unfortunately
# the end result is that it is impossible to force the query to have
# a chosen GROUP BY clause - you can almost do this by using the form:
# .values(*wanted_cols).annotate(AnAggregate())
# but any later annotations, extra selects, values calls that
# refer some column outside of the wanted_cols, order_by, or even
# filter calls can alter the GROUP BY clause.
# The query.group_by is either None (no GROUP BY at all), True
# (group by select fields), or a list of expressions to be added
# to the group by.
if self.query.group_by is None:
return []
expressions = []
if self.query.group_by is not True:
# If the group by is set to a list (by .values() call most likely),
# then we need to add everything in it to the GROUP BY clause.
# Backwards compatibility hack for setting query.group_by. Remove
# when we have public API way of forcing the GROUP BY clause.
# Converts string references to expressions.
for expr in self.query.group_by:
if not hasattr(expr, 'as_sql'):
expressions.append(self.query.resolve_ref(expr))
else:
expressions.append(expr)
# Note that even if the group_by is set, it is only the minimal
# set to group by. So, we need to add cols in select, order_by, and
# having into the select in any case.
ref_sources = {
expr.source for expr in expressions if isinstance(expr, Ref)
}
for expr, _, _ in select:
# Skip members of the select clause that are already included
# by reference.
if expr in ref_sources:
continue
cols = expr.get_group_by_cols()
for col in cols:
expressions.append(col)
if not self._meta_ordering:
for expr, (sql, params, is_ref) in order_by:
# Skip references to the SELECT clause, as all expressions in
# the SELECT clause are already part of the GROUP BY.
if not is_ref:
expressions.extend(expr.get_group_by_cols())
having_group_by = self.having.get_group_by_cols() if self.having else ()
for expr in having_group_by:
expressions.append(expr)
result = []
seen = set()
expressions = self.collapse_group_by(expressions, having_group_by)
for expr in expressions:
sql, params = self.compile(expr)
sql, params = expr.select_format(self, sql, params)
params_hash = make_hashable(params)
if (sql, params_hash) not in seen:
result.append((sql, params))
seen.add((sql, params_hash))
return result
def collapse_group_by(self, expressions, having):
# If the DB can group by primary key, then group by the primary key of
# query's main model. Note that for PostgreSQL the GROUP BY clause must
# include the primary key of every table, but for MySQL it is enough to
# have the main table's primary key.
if self.connection.features.allows_group_by_pk:
# Determine if the main model's primary key is in the query.
pk = None
for expr in expressions:
# Is this a reference to query's base table primary key? If the
# expression isn't a Col-like, then skip the expression.
if (getattr(expr, 'target', None) == self.query.model._meta.pk and
getattr(expr, 'alias', None) == self.query.base_table):
pk = expr
break
# If the main model's primary key is in the query, group by that
# field, HAVING expressions, and expressions associated with tables
# that don't have a primary key included in the grouped columns.
if pk:
pk_aliases = {
expr.alias for expr in expressions
if hasattr(expr, 'target') and expr.target.primary_key
}
expressions = [pk] + [
expr for expr in expressions
if expr in having or (
getattr(expr, 'alias', None) is not None and expr.alias not in pk_aliases
)
]
elif self.connection.features.allows_group_by_selected_pks:
# Filter out all expressions associated with a table's primary key
# present in the grouped columns. This is done by identifying all
# tables that have their primary key included in the grouped
# columns and removing non-primary key columns referring to them.
# Unmanaged models are excluded because they could be representing
# database views on which the optimization might not be allowed.
pks = {
expr for expr in expressions
if (
hasattr(expr, 'target') and
expr.target.primary_key and
self.connection.features.allows_group_by_selected_pks_on_model(expr.target.model)
)
}
aliases = {expr.alias for expr in pks}
expressions = [
expr for expr in expressions if expr in pks or getattr(expr, 'alias', None) not in aliases
]
return expressions
def get_select(self):
"""
Return three values:
- a list of 3-tuples of (expression, (sql, params), alias)
- a klass_info structure,
- a dictionary of annotations
The (sql, params) is what the expression will produce, and alias is the
"AS alias" for the column (possibly None).
The klass_info structure contains the following information:
- The base model of the query.
- Which columns for that model are present in the query (by
position of the select clause).
- related_klass_infos: [f, klass_info] to descent into
The annotations is a dictionary of {'attname': column position} values.
"""
select = []
klass_info = None
annotations = {}
select_idx = 0
for alias, (sql, params) in self.query.extra_select.items():
annotations[alias] = select_idx
select.append((RawSQL(sql, params), alias))
select_idx += 1
assert not (self.query.select and self.query.default_cols)
if self.query.default_cols:
cols = self.get_default_columns()
else:
# self.query.select is a special case. These columns never go to
# any model.
cols = self.query.select
if cols:
select_list = []
for col in cols:
select_list.append(select_idx)
select.append((col, None))
select_idx += 1
klass_info = {
'model': self.query.model,
'select_fields': select_list,
}
for alias, annotation in self.query.annotation_select.items():
annotations[alias] = select_idx
select.append((annotation, alias))
select_idx += 1
if self.query.select_related:
related_klass_infos = self.get_related_selections(select)
klass_info['related_klass_infos'] = related_klass_infos
def get_select_from_parent(klass_info):
for ki in klass_info['related_klass_infos']:
if ki['from_parent']:
ki['select_fields'] = (klass_info['select_fields'] +
ki['select_fields'])
get_select_from_parent(ki)
get_select_from_parent(klass_info)
ret = []
for col, alias in select:
try:
sql, params = self.compile(col)
except EmptyResultSet:
empty_result_set_value = getattr(col, 'empty_result_set_value', NotImplemented)
if empty_result_set_value is NotImplemented:
# Select a predicate that's always False.
sql, params = '0', ()
else:
sql, params = self.compile(Value(empty_result_set_value))
else:
sql, params = col.select_format(self, sql, params)
ret.append((col, (sql, params), alias))
return ret, klass_info, annotations
def _order_by_pairs(self):
if self.query.extra_order_by:
ordering = self.query.extra_order_by
elif not self.query.default_ordering:
ordering = self.query.order_by
elif self.query.order_by:
ordering = self.query.order_by
elif self.query.get_meta().ordering:
ordering = self.query.get_meta().ordering
self._meta_ordering = ordering
else:
ordering = []
if self.query.standard_ordering:
default_order, _ = ORDER_DIR['ASC']
else:
default_order, _ = ORDER_DIR['DESC']
for field in ordering:
if hasattr(field, 'resolve_expression'):
if isinstance(field, Value):
# output_field must be resolved for constants.
field = Cast(field, field.output_field)
if not isinstance(field, OrderBy):
field = field.asc()
if not self.query.standard_ordering:
field = field.copy()
field.reverse_ordering()
yield field, False
continue
if field == '?': # random
yield OrderBy(Random()), False
continue
col, order = get_order_dir(field, default_order)
descending = order == 'DESC'
if col in self.query.annotation_select:
# Reference to expression in SELECT clause
yield (
OrderBy(
Ref(col, self.query.annotation_select[col]),
descending=descending,
),
True,
)
continue
if col in self.query.annotations:
# References to an expression which is masked out of the SELECT
# clause.
if self.query.combinator and self.select:
# Don't use the resolved annotation because other
# combinated queries might define it differently.
expr = F(col)
else:
expr = self.query.annotations[col]
if isinstance(expr, Value):
# output_field must be resolved for constants.
expr = Cast(expr, expr.output_field)
yield OrderBy(expr, descending=descending), False
continue
if '.' in field:
# This came in through an extra(order_by=...) addition. Pass it
# on verbatim.
table, col = col.split('.', 1)
yield (
OrderBy(
RawSQL('%s.%s' % (self.quote_name_unless_alias(table), col), []),
descending=descending,
),
False,
)
continue
if self.query.extra and col in self.query.extra:
if col in self.query.extra_select:
yield (
OrderBy(Ref(col, RawSQL(*self.query.extra[col])), descending=descending),
True,
)
else:
yield (
OrderBy(RawSQL(*self.query.extra[col]), descending=descending),
False,
)
else:
if self.query.combinator and self.select:
# Don't use the first model's field because other
# combinated queries might define it differently.
yield OrderBy(F(col), descending=descending), False
else:
# 'col' is of the form 'field' or 'field1__field2' or
# '-field1__field2__field', etc.
yield from self.find_ordering_name(
field, self.query.get_meta(), default_order=default_order,
)
def get_order_by(self):
"""
Return a list of 2-tuples of the form (expr, (sql, params, is_ref)) for
the ORDER BY clause.
The order_by clause can alter the select clause (for example it can add
aliases to clauses that do not yet have one, or it can add totally new
select clauses).
"""
result = []
seen = set()
for expr, is_ref in self._order_by_pairs():
resolved = expr.resolve_expression(self.query, allow_joins=True, reuse=None)
if self.query.combinator and self.select:
src = resolved.get_source_expressions()[0]
expr_src = expr.get_source_expressions()[0]
# Relabel order by columns to raw numbers if this is a combined
# query; necessary since the columns can't be referenced by the
# fully qualified name and the simple column names may collide.
for idx, (sel_expr, _, col_alias) in enumerate(self.select):
if is_ref and col_alias == src.refs:
src = src.source
elif col_alias and not (
isinstance(expr_src, F) and col_alias == expr_src.name
):
continue
if src == sel_expr:
resolved.set_source_expressions([RawSQL('%d' % (idx + 1), ())])
break
else:
if col_alias:
raise DatabaseError('ORDER BY term does not match any column in the result set.')
# Add column used in ORDER BY clause to the selected
# columns and to each combined query.
order_by_idx = len(self.query.select) + 1
col_name = f'__orderbycol{order_by_idx}'
for q in self.query.combined_queries:
q.add_annotation(expr_src, col_name)
self.query.add_select_col(resolved, col_name)
resolved.set_source_expressions([RawSQL(f'{order_by_idx}', ())])
sql, params = self.compile(resolved)
# Don't add the same column twice, but the order direction is
# not taken into account so we strip it. When this entire method
# is refactored into expressions, then we can check each part as we
# generate it.
without_ordering = self.ordering_parts.search(sql)[1]
params_hash = make_hashable(params)
if (without_ordering, params_hash) in seen:
continue
seen.add((without_ordering, params_hash))
result.append((resolved, (sql, params, is_ref)))
return result
def get_extra_select(self, order_by, select):
extra_select = []
if self.query.distinct and not self.query.distinct_fields:
select_sql = [t[1] for t in select]
for expr, (sql, params, is_ref) in order_by:
without_ordering = self.ordering_parts.search(sql)[1]
if not is_ref and (without_ordering, params) not in select_sql:
extra_select.append((expr, (without_ordering, params), None))
return extra_select
def quote_name_unless_alias(self, name):
"""
A wrapper around connection.ops.quote_name that doesn't quote aliases
for table names. This avoids problems with some SQL dialects that treat
quoted strings specially (e.g. PostgreSQL).
"""
if name in self.quote_cache:
return self.quote_cache[name]
if ((name in self.query.alias_map and name not in self.query.table_map) or
name in self.query.extra_select or (
self.query.external_aliases.get(name) and name not in self.query.table_map)):
self.quote_cache[name] = name
return name
r = self.connection.ops.quote_name(name)
self.quote_cache[name] = r
return r
def compile(self, node):
vendor_impl = getattr(node, 'as_' + self.connection.vendor, None)
if vendor_impl:
sql, params = vendor_impl(self, self.connection)
else:
sql, params = node.as_sql(self, self.connection)
return sql, params
def get_combinator_sql(self, combinator, all):
features = self.connection.features
compilers = [
query.get_compiler(self.using, self.connection, self.elide_empty)
for query in self.query.combined_queries if not query.is_empty()
]
if not features.supports_slicing_ordering_in_compound:
for query, compiler in zip(self.query.combined_queries, compilers):
if query.low_mark or query.high_mark:
raise DatabaseError('LIMIT/OFFSET not allowed in subqueries of compound statements.')
if compiler.get_order_by():
raise DatabaseError('ORDER BY not allowed in subqueries of compound statements.')
parts = ()
for compiler in compilers:
try:
# If the columns list is limited, then all combined queries
# must have the same columns list. Set the selects defined on
# the query on all combined queries, if not already set.
if not compiler.query.values_select and self.query.values_select:
compiler.query = compiler.query.clone()
compiler.query.set_values((
*self.query.extra_select,
*self.query.values_select,
*self.query.annotation_select,
))
part_sql, part_args = compiler.as_sql()
if compiler.query.combinator:
# Wrap in a subquery if wrapping in parentheses isn't
# supported.
if not features.supports_parentheses_in_compound:
part_sql = 'SELECT * FROM ({})'.format(part_sql)
# Add parentheses when combining with compound query if not
# already added for all compound queries.
elif not features.supports_slicing_ordering_in_compound:
part_sql = '({})'.format(part_sql)
parts += ((part_sql, part_args),)
except EmptyResultSet:
# Omit the empty queryset with UNION and with DIFFERENCE if the
# first queryset is nonempty.
if combinator == 'union' or (combinator == 'difference' and parts):
continue
raise
if not parts:
raise EmptyResultSet
combinator_sql = self.connection.ops.set_operators[combinator]
if all and combinator == 'union':
combinator_sql += ' ALL'
braces = '({})' if features.supports_slicing_ordering_in_compound else '{}'
sql_parts, args_parts = zip(*((braces.format(sql), args) for sql, args in parts))
result = [' {} '.format(combinator_sql).join(sql_parts)]
params = []
for part in args_parts:
params.extend(part)
return result, params
def as_sql(self, with_limits=True, with_col_aliases=False):
"""
Create the SQL for this query. Return the SQL string and list of
parameters.
If 'with_limits' is False, any limit/offset information is not included
in the query.
"""
refcounts_before = self.query.alias_refcount.copy()
try:
extra_select, order_by, group_by = self.pre_sql_setup()
for_update_part = None
# Is a LIMIT/OFFSET clause needed?
with_limit_offset = with_limits and (self.query.high_mark is not None or self.query.low_mark)
combinator = self.query.combinator
features = self.connection.features
if combinator:
if not getattr(features, 'supports_select_{}'.format(combinator)):
raise NotSupportedError('{} is not supported on this database backend.'.format(combinator))
result, params = self.get_combinator_sql(combinator, self.query.combinator_all)
else:
distinct_fields, distinct_params = self.get_distinct()
# This must come after 'select', 'ordering', and 'distinct'
# (see docstring of get_from_clause() for details).
from_, f_params = self.get_from_clause()
try:
where, w_params = self.compile(self.where) if self.where is not None else ('', [])
except EmptyResultSet:
if self.elide_empty:
raise
# Use a predicate that's always False.
where, w_params = '0 = 1', []
having, h_params = self.compile(self.having) if self.having is not None else ("", [])
result = ['SELECT']
params = []
if self.query.distinct:
distinct_result, distinct_params = self.connection.ops.distinct_sql(
distinct_fields,
distinct_params,
)
result += distinct_result
params += distinct_params
out_cols = []
col_idx = 1
for _, (s_sql, s_params), alias in self.select + extra_select:
if alias:
s_sql = '%s AS %s' % (s_sql, self.connection.ops.quote_name(alias))
elif with_col_aliases:
s_sql = '%s AS %s' % (
s_sql,
self.connection.ops.quote_name('col%d' % col_idx),
)
col_idx += 1
params.extend(s_params)
out_cols.append(s_sql)
result += [', '.join(out_cols), 'FROM', *from_]
params.extend(f_params)
if self.query.select_for_update and self.connection.features.has_select_for_update:
if self.connection.get_autocommit():
raise TransactionManagementError('select_for_update cannot be used outside of a transaction.')
if with_limit_offset and not self.connection.features.supports_select_for_update_with_limit:
raise NotSupportedError(
'LIMIT/OFFSET is not supported with '
'select_for_update on this database backend.'
)
nowait = self.query.select_for_update_nowait
skip_locked = self.query.select_for_update_skip_locked
of = self.query.select_for_update_of
no_key = self.query.select_for_no_key_update
# If it's a NOWAIT/SKIP LOCKED/OF/NO KEY query but the
# backend doesn't support it, raise NotSupportedError to
# prevent a possible deadlock.
if nowait and not self.connection.features.has_select_for_update_nowait:
raise NotSupportedError('NOWAIT is not supported on this database backend.')
elif skip_locked and not self.connection.features.has_select_for_update_skip_locked:
raise NotSupportedError('SKIP LOCKED is not supported on this database backend.')
elif of and not self.connection.features.has_select_for_update_of:
raise NotSupportedError('FOR UPDATE OF is not supported on this database backend.')
elif no_key and not self.connection.features.has_select_for_no_key_update:
raise NotSupportedError(
'FOR NO KEY UPDATE is not supported on this '
'database backend.'
)
for_update_part = self.connection.ops.for_update_sql(
nowait=nowait,
skip_locked=skip_locked,
of=self.get_select_for_update_of_arguments(),
no_key=no_key,
)
if for_update_part and self.connection.features.for_update_after_from:
result.append(for_update_part)
if where:
result.append('WHERE %s' % where)
params.extend(w_params)
grouping = []
for g_sql, g_params in group_by:
grouping.append(g_sql)
params.extend(g_params)
if grouping:
if distinct_fields:
raise NotImplementedError('annotate() + distinct(fields) is not implemented.')
order_by = order_by or self.connection.ops.force_no_ordering()
result.append('GROUP BY %s' % ', '.join(grouping))
if self._meta_ordering:
order_by = None
if having:
result.append('HAVING %s' % having)
params.extend(h_params)
if self.query.explain_info:
result.insert(0, self.connection.ops.explain_query_prefix(
self.query.explain_info.format,
**self.query.explain_info.options
))
if order_by:
ordering = []
for _, (o_sql, o_params, _) in order_by:
ordering.append(o_sql)
params.extend(o_params)
result.append('ORDER BY %s' % ', '.join(ordering))
if with_limit_offset:
result.append(self.connection.ops.limit_offset_sql(self.query.low_mark, self.query.high_mark))
if for_update_part and not self.connection.features.for_update_after_from:
result.append(for_update_part)
if self.query.subquery and extra_select:
# If the query is used as a subquery, the extra selects would
# result in more columns than the left-hand side expression is
# expecting. This can happen when a subquery uses a combination
# of order_by() and distinct(), forcing the ordering expressions
# to be selected as well. Wrap the query in another subquery
# to exclude extraneous selects.
sub_selects = []
sub_params = []
for index, (select, _, alias) in enumerate(self.select, start=1):
if not alias and with_col_aliases:
alias = 'col%d' % index
if alias:
sub_selects.append("%s.%s" % (
self.connection.ops.quote_name('subquery'),
self.connection.ops.quote_name(alias),
))
else:
select_clone = select.relabeled_clone({select.alias: 'subquery'})
subselect, subparams = select_clone.as_sql(self, self.connection)
sub_selects.append(subselect)
sub_params.extend(subparams)
return 'SELECT %s FROM (%s) subquery' % (
', '.join(sub_selects),
' '.join(result),
), tuple(sub_params + params)
return ' '.join(result), tuple(params)
finally:
# Finally do cleanup - get rid of the joins we created above.
self.query.reset_refcounts(refcounts_before)
def get_default_columns(self, start_alias=None, opts=None, from_parent=None):
"""
Compute the default columns for selecting every field in the base
model. Will sometimes be called to pull in related models (e.g. via
select_related), in which case "opts" and "start_alias" will be given
to provide a starting point for the traversal.
Return a list of strings, quoted appropriately for use in SQL
directly, as well as a set of aliases used in the select statement (if
'as_pairs' is True, return a list of (alias, col_name) pairs instead
of strings as the first component and None as the second component).
"""
result = []
if opts is None:
opts = self.query.get_meta()
only_load = self.deferred_to_columns()
start_alias = start_alias or self.query.get_initial_alias()
# The 'seen_models' is used to optimize checking the needed parent
# alias for a given field. This also includes None -> start_alias to
# be used by local fields.
seen_models = {None: start_alias}
for field in opts.concrete_fields:
model = field.model._meta.concrete_model
# A proxy model will have a different model and concrete_model. We
# will assign None if the field belongs to this model.
if model == opts.model:
model = None
if from_parent and model is not None and issubclass(
from_parent._meta.concrete_model, model._meta.concrete_model):
# Avoid loading data for already loaded parents.
# We end up here in the case select_related() resolution
# proceeds from parent model to child model. In that case the
# parent model data is already present in the SELECT clause,
# and we want to avoid reloading the same data again.
continue
if field.model in only_load and field.attname not in only_load[field.model]:
continue
alias = self.query.join_parent_model(opts, model, start_alias,
seen_models)
column = field.get_col(alias)
result.append(column)
return result
def get_distinct(self):
"""
Return a quoted list of fields to use in DISTINCT ON part of the query.
This method can alter the tables in the query, and thus it must be
called before get_from_clause().
"""
result = []
params = []
opts = self.query.get_meta()
for name in self.query.distinct_fields:
parts = name.split(LOOKUP_SEP)
_, targets, alias, joins, path, _, transform_function = self._setup_joins(parts, opts, None)
targets, alias, _ = self.query.trim_joins(targets, joins, path)
for target in targets:
if name in self.query.annotation_select:
result.append(self.connection.ops.quote_name(name))
else:
r, p = self.compile(transform_function(target, alias))
result.append(r)
params.append(p)
return result, params
def find_ordering_name(self, name, opts, alias=None, default_order='ASC',
already_seen=None):
"""
Return the table alias (the name might be ambiguous, the alias will
not be) and column name for ordering by the given 'name' parameter.
The 'name' is of the form 'field1__field2__...__fieldN'.
"""
name, order = get_order_dir(name, default_order)
descending = order == 'DESC'
pieces = name.split(LOOKUP_SEP)
field, targets, alias, joins, path, opts, transform_function = self._setup_joins(pieces, opts, alias)
# If we get to this point and the field is a relation to another model,
# append the default ordering for that model unless it is the pk
# shortcut or the attribute name of the field that is specified.
if (
field.is_relation and
opts.ordering and
getattr(field, 'attname', None) != pieces[-1] and
name != 'pk'
):
# Firstly, avoid infinite loops.
already_seen = already_seen or set()
join_tuple = tuple(getattr(self.query.alias_map[j], 'join_cols', None) for j in joins)
if join_tuple in already_seen:
raise FieldError('Infinite loop caused by ordering.')
already_seen.add(join_tuple)
results = []
for item in opts.ordering:
if hasattr(item, 'resolve_expression') and not isinstance(item, OrderBy):
item = item.desc() if descending else item.asc()
if isinstance(item, OrderBy):
results.append((item, False))
continue
results.extend(self.find_ordering_name(item, opts, alias,
order, already_seen))
return results
targets, alias, _ = self.query.trim_joins(targets, joins, path)
return [(OrderBy(transform_function(t, alias), descending=descending), False) for t in targets]
def _setup_joins(self, pieces, opts, alias):
"""
Helper method for get_order_by() and get_distinct().
get_ordering() and get_distinct() must produce same target columns on
same input, as the prefixes of get_ordering() and get_distinct() must
match. Executing SQL where this is not true is an error.
"""
alias = alias or self.query.get_initial_alias()
field, targets, opts, joins, path, transform_function = self.query.setup_joins(pieces, opts, alias)
alias = joins[-1]
return field, targets, alias, joins, path, opts, transform_function
def get_from_clause(self):
"""
Return a list of strings that are joined together to go after the
"FROM" part of the query, as well as a list any extra parameters that
need to be included. Subclasses, can override this to create a
from-clause via a "select".
This should only be called after any SQL construction methods that
might change the tables that are needed. This means the select columns,
ordering, and distinct must be done first.
"""
result = []
params = []
for alias in tuple(self.query.alias_map):
if not self.query.alias_refcount[alias]:
continue
try:
from_clause = self.query.alias_map[alias]
except KeyError:
# Extra tables can end up in self.tables, but not in the
# alias_map if they aren't in a join. That's OK. We skip them.
continue
clause_sql, clause_params = self.compile(from_clause)
result.append(clause_sql)
params.extend(clause_params)
for t in self.query.extra_tables:
alias, _ = self.query.table_alias(t)
# Only add the alias if it's not already present (the table_alias()
# call increments the refcount, so an alias refcount of one means
# this is the only reference).
if alias not in self.query.alias_map or self.query.alias_refcount[alias] == 1:
result.append(', %s' % self.quote_name_unless_alias(alias))
return result, params
def get_related_selections(self, select, opts=None, root_alias=None, cur_depth=1,
requested=None, restricted=None):
"""
Fill in the information needed for a select_related query. The current
depth is measured as the number of connections away from the root model
(for example, cur_depth=1 means we are looking at models with direct
connections to the root model).
"""
def _get_field_choices():
direct_choices = (f.name for f in opts.fields if f.is_relation)
reverse_choices = (
f.field.related_query_name()
for f in opts.related_objects if f.field.unique
)
return chain(direct_choices, reverse_choices, self.query._filtered_relations)
related_klass_infos = []
if not restricted and cur_depth > self.query.max_depth:
# We've recursed far enough; bail out.
return related_klass_infos
if not opts:
opts = self.query.get_meta()
root_alias = self.query.get_initial_alias()
only_load = self.query.get_loaded_field_names()
# Setup for the case when only particular related fields should be
# included in the related selection.
fields_found = set()
if requested is None:
restricted = isinstance(self.query.select_related, dict)
if restricted:
requested = self.query.select_related
def get_related_klass_infos(klass_info, related_klass_infos):
klass_info['related_klass_infos'] = related_klass_infos
for f in opts.fields:
field_model = f.model._meta.concrete_model
fields_found.add(f.name)
if restricted:
next = requested.get(f.name, {})
if not f.is_relation:
# If a non-related field is used like a relation,
# or if a single non-relational field is given.
if next or f.name in requested:
raise FieldError(
"Non-relational field given in select_related: '%s'. "
"Choices are: %s" % (
f.name,
", ".join(_get_field_choices()) or '(none)',
)
)
else:
next = False
if not select_related_descend(f, restricted, requested,
only_load.get(field_model)):
continue
klass_info = {
'model': f.remote_field.model,
'field': f,
'reverse': False,
'local_setter': f.set_cached_value,
'remote_setter': f.remote_field.set_cached_value if f.unique else lambda x, y: None,
'from_parent': False,
}
related_klass_infos.append(klass_info)
select_fields = []
_, _, _, joins, _, _ = self.query.setup_joins(
[f.name], opts, root_alias)
alias = joins[-1]
columns = self.get_default_columns(start_alias=alias, opts=f.remote_field.model._meta)
for col in columns:
select_fields.append(len(select))
select.append((col, None))
klass_info['select_fields'] = select_fields
next_klass_infos = self.get_related_selections(
select, f.remote_field.model._meta, alias, cur_depth + 1, next, restricted)
get_related_klass_infos(klass_info, next_klass_infos)
if restricted:
related_fields = [
(o.field, o.related_model)
for o in opts.related_objects
if o.field.unique and not o.many_to_many
]
for f, model in related_fields:
if not select_related_descend(f, restricted, requested,
only_load.get(model), reverse=True):
continue
related_field_name = f.related_query_name()
fields_found.add(related_field_name)
join_info = self.query.setup_joins([related_field_name], opts, root_alias)
alias = join_info.joins[-1]
from_parent = issubclass(model, opts.model) and model is not opts.model
klass_info = {
'model': model,
'field': f,
'reverse': True,
'local_setter': f.remote_field.set_cached_value,
'remote_setter': f.set_cached_value,
'from_parent': from_parent,
}
related_klass_infos.append(klass_info)
select_fields = []
columns = self.get_default_columns(
start_alias=alias, opts=model._meta, from_parent=opts.model)
for col in columns:
select_fields.append(len(select))
select.append((col, None))
klass_info['select_fields'] = select_fields
next = requested.get(f.related_query_name(), {})
next_klass_infos = self.get_related_selections(
select, model._meta, alias, cur_depth + 1,
next, restricted)
get_related_klass_infos(klass_info, next_klass_infos)
def local_setter(obj, from_obj):
# Set a reverse fk object when relation is non-empty.
if from_obj:
f.remote_field.set_cached_value(from_obj, obj)
def remote_setter(name, obj, from_obj):
setattr(from_obj, name, obj)
for name in list(requested):
# Filtered relations work only on the topmost level.
if cur_depth > 1:
break
if name in self.query._filtered_relations:
fields_found.add(name)
f, _, join_opts, joins, _, _ = self.query.setup_joins([name], opts, root_alias)
model = join_opts.model
alias = joins[-1]
from_parent = issubclass(model, opts.model) and model is not opts.model
klass_info = {
'model': model,
'field': f,
'reverse': True,
'local_setter': local_setter,
'remote_setter': partial(remote_setter, name),
'from_parent': from_parent,
}
related_klass_infos.append(klass_info)
select_fields = []
columns = self.get_default_columns(
start_alias=alias, opts=model._meta,
from_parent=opts.model,
)
for col in columns:
select_fields.append(len(select))
select.append((col, None))
klass_info['select_fields'] = select_fields
next_requested = requested.get(name, {})
next_klass_infos = self.get_related_selections(
select, opts=model._meta, root_alias=alias,
cur_depth=cur_depth + 1, requested=next_requested,
restricted=restricted,
)
get_related_klass_infos(klass_info, next_klass_infos)
fields_not_found = set(requested).difference(fields_found)
if fields_not_found:
invalid_fields = ("'%s'" % s for s in fields_not_found)
raise FieldError(
'Invalid field name(s) given in select_related: %s. '
'Choices are: %s' % (
', '.join(invalid_fields),
', '.join(_get_field_choices()) or '(none)',
)
)
return related_klass_infos
def get_select_for_update_of_arguments(self):
"""
Return a quoted list of arguments for the SELECT FOR UPDATE OF part of
the query.
"""
def _get_parent_klass_info(klass_info):
concrete_model = klass_info['model']._meta.concrete_model
for parent_model, parent_link in concrete_model._meta.parents.items():
parent_list = parent_model._meta.get_parent_list()
yield {
'model': parent_model,
'field': parent_link,
'reverse': False,
'select_fields': [
select_index
for select_index in klass_info['select_fields']
# Selected columns from a model or its parents.
if (
self.select[select_index][0].target.model == parent_model or
self.select[select_index][0].target.model in parent_list
)
],
}
def _get_first_selected_col_from_model(klass_info):
"""
Find the first selected column from a model. If it doesn't exist,
don't lock a model.
select_fields is filled recursively, so it also contains fields
from the parent models.
"""
concrete_model = klass_info['model']._meta.concrete_model
for select_index in klass_info['select_fields']:
if self.select[select_index][0].target.model == concrete_model:
return self.select[select_index][0]
def _get_field_choices():
"""Yield all allowed field paths in breadth-first search order."""
queue = collections.deque([(None, self.klass_info)])
while queue:
parent_path, klass_info = queue.popleft()
if parent_path is None:
path = []
yield 'self'
else:
field = klass_info['field']
if klass_info['reverse']:
field = field.remote_field
path = parent_path + [field.name]
yield LOOKUP_SEP.join(path)
queue.extend(
(path, klass_info)
for klass_info in _get_parent_klass_info(klass_info)
)
queue.extend(
(path, klass_info)
for klass_info in klass_info.get('related_klass_infos', [])
)
if not self.klass_info:
return []
result = []
invalid_names = []
for name in self.query.select_for_update_of:
klass_info = self.klass_info
if name == 'self':
col = _get_first_selected_col_from_model(klass_info)
else:
for part in name.split(LOOKUP_SEP):
klass_infos = (
*klass_info.get('related_klass_infos', []),
*_get_parent_klass_info(klass_info),
)
for related_klass_info in klass_infos:
field = related_klass_info['field']
if related_klass_info['reverse']:
field = field.remote_field
if field.name == part:
klass_info = related_klass_info
break
else:
klass_info = None
break
if klass_info is None:
invalid_names.append(name)
continue
col = _get_first_selected_col_from_model(klass_info)
if col is not None:
if self.connection.features.select_for_update_of_column:
result.append(self.compile(col)[0])
else:
result.append(self.quote_name_unless_alias(col.alias))
if invalid_names:
raise FieldError(
'Invalid field name(s) given in select_for_update(of=(...)): %s. '
'Only relational fields followed in the query are allowed. '
'Choices are: %s.' % (
', '.join(invalid_names),
', '.join(_get_field_choices()),
)
)
return result
def deferred_to_columns(self):
"""
Convert the self.deferred_loading data structure to mapping of table
names to sets of column names which are to be loaded. Return the
dictionary.
"""
columns = {}
self.query.deferred_to_data(columns, self.query.get_loaded_field_names_cb)
return columns
def get_converters(self, expressions):
converters = {}
for i, expression in enumerate(expressions):
if expression:
backend_converters = self.connection.ops.get_db_converters(expression)
field_converters = expression.get_db_converters(self.connection)
if backend_converters or field_converters:
converters[i] = (backend_converters + field_converters, expression)
return converters
def apply_converters(self, rows, converters):
connection = self.connection
converters = list(converters.items())
for row in map(list, rows):
for pos, (convs, expression) in converters:
value = row[pos]
for converter in convs:
value = converter(value, expression, connection)
row[pos] = value
yield row
def results_iter(self, results=None, tuple_expected=False, chunked_fetch=False,
chunk_size=GET_ITERATOR_CHUNK_SIZE):
"""Return an iterator over the results from executing this query."""
if results is None:
results = self.execute_sql(MULTI, chunked_fetch=chunked_fetch, chunk_size=chunk_size)
fields = [s[0] for s in self.select[0:self.col_count]]
converters = self.get_converters(fields)
rows = chain.from_iterable(results)
if converters:
rows = self.apply_converters(rows, converters)
if tuple_expected:
rows = map(tuple, rows)
return rows
def has_results(self):
"""
Backends (e.g. NoSQL) can override this in order to use optimized
versions of "query has any results."
"""
return bool(self.execute_sql(SINGLE))
def execute_sql(self, result_type=MULTI, chunked_fetch=False, chunk_size=GET_ITERATOR_CHUNK_SIZE):
"""
Run the query against the database and return the result(s). The
return value is a single data item if result_type is SINGLE, or an
iterator over the results if the result_type is MULTI.
result_type is either MULTI (use fetchmany() to retrieve all rows),
SINGLE (only retrieve a single row), or None. In this last case, the
cursor is returned if any query is executed, since it's used by
subclasses such as InsertQuery). It's possible, however, that no query
is needed, as the filters describe an empty set. In that case, None is
returned, to avoid any unnecessary database interaction.
"""
result_type = result_type or NO_RESULTS
try:
sql, params = self.as_sql()
if not sql:
raise EmptyResultSet
except EmptyResultSet:
if result_type == MULTI:
return iter([])
else:
return
if chunked_fetch:
cursor = self.connection.chunked_cursor()
else:
cursor = self.connection.cursor()
try:
cursor.execute(sql, params)
except Exception:
# Might fail for server-side cursors (e.g. connection closed)
cursor.close()
raise
if result_type == CURSOR:
# Give the caller the cursor to process and close.
return cursor
if result_type == SINGLE:
try:
val = cursor.fetchone()
if val:
return val[0:self.col_count]
return val
finally:
# done with the cursor
cursor.close()
if result_type == NO_RESULTS:
cursor.close()
return
result = cursor_iter(
cursor, self.connection.features.empty_fetchmany_value,
self.col_count if self.has_extra_select else None,
chunk_size,
)
if not chunked_fetch or not self.connection.features.can_use_chunked_reads:
# If we are using non-chunked reads, we return the same data
# structure as normally, but ensure it is all read into memory
# before going any further. Use chunked_fetch if requested,
# unless the database doesn't support it.
return list(result)
return result
def as_subquery_condition(self, alias, columns, compiler):
qn = compiler.quote_name_unless_alias
qn2 = self.connection.ops.quote_name
for index, select_col in enumerate(self.query.select):
lhs_sql, lhs_params = self.compile(select_col)
rhs = '%s.%s' % (qn(alias), qn2(columns[index]))
self.query.where.add(
RawSQL('%s = %s' % (lhs_sql, rhs), lhs_params), 'AND')
sql, params = self.as_sql()
return 'EXISTS (%s)' % sql, params
def explain_query(self):
result = list(self.execute_sql())
# Some backends return 1 item tuples with strings, and others return
# tuples with integers and strings. Flatten them out into strings.
output_formatter = json.dumps if self.query.explain_info.format == 'json' else str
for row in result[0]:
if not isinstance(row, str):
yield ' '.join(output_formatter(c) for c in row)
else:
yield row
class SQLInsertCompiler(SQLCompiler):
returning_fields = None
returning_params = tuple()
def field_as_sql(self, field, val):
"""
Take a field and a value intended to be saved on that field, and
return placeholder SQL and accompanying params. Check for raw values,
expressions, and fields with get_placeholder() defined in that order.
When field is None, consider the value raw and use it as the
placeholder, with no corresponding parameters returned.
"""
if field is None:
# A field value of None means the value is raw.
sql, params = val, []
elif hasattr(val, 'as_sql'):
# This is an expression, let's compile it.
sql, params = self.compile(val)
elif hasattr(field, 'get_placeholder'):
# Some fields (e.g. geo fields) need special munging before
# they can be inserted.
sql, params = field.get_placeholder(val, self, self.connection), [val]
else:
# Return the common case for the placeholder
sql, params = '%s', [val]
# The following hook is only used by Oracle Spatial, which sometimes
# needs to yield 'NULL' and [] as its placeholder and params instead
# of '%s' and [None]. The 'NULL' placeholder is produced earlier by
# OracleOperations.get_geom_placeholder(). The following line removes
# the corresponding None parameter. See ticket #10888.
params = self.connection.ops.modify_insert_params(sql, params)
return sql, params
def prepare_value(self, field, value):
"""
Prepare a value to be used in a query by resolving it if it is an
expression and otherwise calling the field's get_db_prep_save().
"""
if hasattr(value, 'resolve_expression'):
value = value.resolve_expression(self.query, allow_joins=False, for_save=True)
# Don't allow values containing Col expressions. They refer to
# existing columns on a row, but in the case of insert the row
# doesn't exist yet.
if value.contains_column_references:
raise ValueError(
'Failed to insert expression "%s" on %s. F() expressions '
'can only be used to update, not to insert.' % (value, field)
)
if value.contains_aggregate:
raise FieldError(
'Aggregate functions are not allowed in this query '
'(%s=%r).' % (field.name, value)
)
if value.contains_over_clause:
raise FieldError(
'Window expressions are not allowed in this query (%s=%r).'
% (field.name, value)
)
else:
value = field.get_db_prep_save(value, connection=self.connection)
return value
def pre_save_val(self, field, obj):
"""
Get the given field's value off the given obj. pre_save() is used for
things like auto_now on DateTimeField. Skip it if this is a raw query.
"""
if self.query.raw:
return getattr(obj, field.attname)
return field.pre_save(obj, add=True)
def assemble_as_sql(self, fields, value_rows):
"""
Take a sequence of N fields and a sequence of M rows of values, and
generate placeholder SQL and parameters for each field and value.
Return a pair containing:
* a sequence of M rows of N SQL placeholder strings, and
* a sequence of M rows of corresponding parameter values.
Each placeholder string may contain any number of '%s' interpolation
strings, and each parameter row will contain exactly as many params
as the total number of '%s's in the corresponding placeholder row.
"""
if not value_rows:
return [], []
# list of (sql, [params]) tuples for each object to be saved
# Shape: [n_objs][n_fields][2]
rows_of_fields_as_sql = (
(self.field_as_sql(field, v) for field, v in zip(fields, row))
for row in value_rows
)
# tuple like ([sqls], [[params]s]) for each object to be saved
# Shape: [n_objs][2][n_fields]
sql_and_param_pair_rows = (zip(*row) for row in rows_of_fields_as_sql)
# Extract separate lists for placeholders and params.
# Each of these has shape [n_objs][n_fields]
placeholder_rows, param_rows = zip(*sql_and_param_pair_rows)
# Params for each field are still lists, and need to be flattened.
param_rows = [[p for ps in row for p in ps] for row in param_rows]
return placeholder_rows, param_rows
def as_sql(self):
# We don't need quote_name_unless_alias() here, since these are all
# going to be column names (so we can avoid the extra overhead).
qn = self.connection.ops.quote_name
opts = self.query.get_meta()
insert_statement = self.connection.ops.insert_statement(ignore_conflicts=self.query.ignore_conflicts)
result = ['%s %s' % (insert_statement, qn(opts.db_table))]
fields = self.query.fields or [opts.pk]
result.append('(%s)' % ', '.join(qn(f.column) for f in fields))
if self.query.fields:
value_rows = [
[self.prepare_value(field, self.pre_save_val(field, obj)) for field in fields]
for obj in self.query.objs
]
else:
# An empty object.
value_rows = [[self.connection.ops.pk_default_value()] for _ in self.query.objs]
fields = [None]
# Currently the backends just accept values when generating bulk
# queries and generate their own placeholders. Doing that isn't
# necessary and it should be possible to use placeholders and
# expressions in bulk inserts too.
can_bulk = (not self.returning_fields and self.connection.features.has_bulk_insert)
placeholder_rows, param_rows = self.assemble_as_sql(fields, value_rows)
ignore_conflicts_suffix_sql = self.connection.ops.ignore_conflicts_suffix_sql(
ignore_conflicts=self.query.ignore_conflicts
)
if self.returning_fields and self.connection.features.can_return_columns_from_insert:
if self.connection.features.can_return_rows_from_bulk_insert:
result.append(self.connection.ops.bulk_insert_sql(fields, placeholder_rows))
params = param_rows
else:
result.append("VALUES (%s)" % ", ".join(placeholder_rows[0]))
params = [param_rows[0]]
if ignore_conflicts_suffix_sql:
result.append(ignore_conflicts_suffix_sql)
# Skip empty r_sql to allow subclasses to customize behavior for
# 3rd party backends. Refs #19096.
r_sql, self.returning_params = self.connection.ops.return_insert_columns(self.returning_fields)
if r_sql:
result.append(r_sql)
params += [self.returning_params]
return [(" ".join(result), tuple(chain.from_iterable(params)))]
if can_bulk:
result.append(self.connection.ops.bulk_insert_sql(fields, placeholder_rows))
if ignore_conflicts_suffix_sql:
result.append(ignore_conflicts_suffix_sql)
return [(" ".join(result), tuple(p for ps in param_rows for p in ps))]
else:
if ignore_conflicts_suffix_sql:
result.append(ignore_conflicts_suffix_sql)
return [
(" ".join(result + ["VALUES (%s)" % ", ".join(p)]), vals)
for p, vals in zip(placeholder_rows, param_rows)
]
def execute_sql(self, returning_fields=None):
assert not (
returning_fields and len(self.query.objs) != 1 and
not self.connection.features.can_return_rows_from_bulk_insert
)
opts = self.query.get_meta()
self.returning_fields = returning_fields
with self.connection.cursor() as cursor:
for sql, params in self.as_sql():
cursor.execute(sql, params)
if not self.returning_fields:
return []
if self.connection.features.can_return_rows_from_bulk_insert and len(self.query.objs) > 1:
rows = self.connection.ops.fetch_returned_insert_rows(cursor)
elif self.connection.features.can_return_columns_from_insert:
assert len(self.query.objs) == 1
rows = [self.connection.ops.fetch_returned_insert_columns(
cursor, self.returning_params,
)]
else:
rows = [(self.connection.ops.last_insert_id(
cursor, opts.db_table, opts.pk.column,
),)]
cols = [field.get_col(opts.db_table) for field in self.returning_fields]
converters = self.get_converters(cols)
if converters:
rows = list(self.apply_converters(rows, converters))
return rows
class SQLDeleteCompiler(SQLCompiler):
@cached_property
def single_alias(self):
# Ensure base table is in aliases.
self.query.get_initial_alias()
return sum(self.query.alias_refcount[t] > 0 for t in self.query.alias_map) == 1
@classmethod
def _expr_refs_base_model(cls, expr, base_model):
if isinstance(expr, Query):
return expr.model == base_model
if not hasattr(expr, 'get_source_expressions'):
return False
return any(
cls._expr_refs_base_model(source_expr, base_model)
for source_expr in expr.get_source_expressions()
)
@cached_property
def contains_self_reference_subquery(self):
return any(
self._expr_refs_base_model(expr, self.query.model)
for expr in chain(self.query.annotations.values(), self.query.where.children)
)
def _as_sql(self, query):
result = [
'DELETE FROM %s' % self.quote_name_unless_alias(query.base_table)
]
where, params = self.compile(query.where)
if where:
result.append('WHERE %s' % where)
return ' '.join(result), tuple(params)
def as_sql(self):
"""
Create the SQL for this query. Return the SQL string and list of
parameters.
"""
if self.single_alias and not self.contains_self_reference_subquery:
return self._as_sql(self.query)
innerq = self.query.clone()
innerq.__class__ = Query
innerq.clear_select_clause()
pk = self.query.model._meta.pk
innerq.select = [
pk.get_col(self.query.get_initial_alias())
]
outerq = Query(self.query.model)
if not self.connection.features.update_can_self_select:
# Force the materialization of the inner query to allow reference
# to the target table on MySQL.
sql, params = innerq.get_compiler(connection=self.connection).as_sql()
innerq = RawSQL('SELECT * FROM (%s) subquery' % sql, params)
outerq.add_filter('pk__in', innerq)
return self._as_sql(outerq)
class SQLUpdateCompiler(SQLCompiler):
def as_sql(self):
"""
Create the SQL for this query. Return the SQL string and list of
parameters.
"""
self.pre_sql_setup()
if not self.query.values:
return '', ()
qn = self.quote_name_unless_alias
values, update_params = [], []
for field, model, val in self.query.values:
if hasattr(val, 'resolve_expression'):
val = val.resolve_expression(self.query, allow_joins=False, for_save=True)
if val.contains_aggregate:
raise FieldError(
'Aggregate functions are not allowed in this query '
'(%s=%r).' % (field.name, val)
)
if val.contains_over_clause:
raise FieldError(
'Window expressions are not allowed in this query '
'(%s=%r).' % (field.name, val)
)
elif hasattr(val, 'prepare_database_save'):
if field.remote_field:
val = field.get_db_prep_save(
val.prepare_database_save(field),
connection=self.connection,
)
else:
raise TypeError(
"Tried to update field %s with a model instance, %r. "
"Use a value compatible with %s."
% (field, val, field.__class__.__name__)
)
else:
val = field.get_db_prep_save(val, connection=self.connection)
# Getting the placeholder for the field.
if hasattr(field, 'get_placeholder'):
placeholder = field.get_placeholder(val, self, self.connection)
else:
placeholder = '%s'
name = field.column
if hasattr(val, 'as_sql'):
sql, params = self.compile(val)
values.append('%s = %s' % (qn(name), placeholder % sql))
update_params.extend(params)
elif val is not None:
values.append('%s = %s' % (qn(name), placeholder))
update_params.append(val)
else:
values.append('%s = NULL' % qn(name))
table = self.query.base_table
result = [
'UPDATE %s SET' % qn(table),
', '.join(values),
]
where, params = self.compile(self.query.where)
if where:
result.append('WHERE %s' % where)
return ' '.join(result), tuple(update_params + params)
def execute_sql(self, result_type):
"""
Execute the specified update. Return the number of rows affected by
the primary update query. The "primary update query" is the first
non-empty query that is executed. Row counts for any subsequent,
related queries are not available.
"""
cursor = super().execute_sql(result_type)
try:
rows = cursor.rowcount if cursor else 0
is_empty = cursor is None
finally:
if cursor:
cursor.close()
for query in self.query.get_related_updates():
aux_rows = query.get_compiler(self.using).execute_sql(result_type)
if is_empty and aux_rows:
rows = aux_rows
is_empty = False
return rows
def pre_sql_setup(self):
"""
If the update depends on results from other tables, munge the "where"
conditions to match the format required for (portable) SQL updates.
If multiple updates are required, pull out the id values to update at
this point so that they don't change as a result of the progressive
updates.
"""
refcounts_before = self.query.alias_refcount.copy()
# Ensure base table is in the query
self.query.get_initial_alias()
count = self.query.count_active_tables()
if not self.query.related_updates and count == 1:
return
query = self.query.chain(klass=Query)
query.select_related = False
query.clear_ordering(force=True)
query.extra = {}
query.select = []
query.add_fields([query.get_meta().pk.name])
super().pre_sql_setup()
must_pre_select = count > 1 and not self.connection.features.update_can_self_select
# Now we adjust the current query: reset the where clause and get rid
# of all the tables we don't need (since they're in the sub-select).
self.query.clear_where()
if self.query.related_updates or must_pre_select:
# Either we're using the idents in multiple update queries (so
# don't want them to change), or the db backend doesn't support
# selecting from the updating table (e.g. MySQL).
idents = []
for rows in query.get_compiler(self.using).execute_sql(MULTI):
idents.extend(r[0] for r in rows)
self.query.add_filter('pk__in', idents)
self.query.related_ids = idents
else:
# The fast path. Filters and updates in one query.
self.query.add_filter('pk__in', query)
self.query.reset_refcounts(refcounts_before)
class SQLAggregateCompiler(SQLCompiler):
def as_sql(self):
"""
Create the SQL for this query. Return the SQL string and list of
parameters.
"""
sql, params = [], []
for annotation in self.query.annotation_select.values():
ann_sql, ann_params = self.compile(annotation)
ann_sql, ann_params = annotation.select_format(self, ann_sql, ann_params)
sql.append(ann_sql)
params.extend(ann_params)
self.col_count = len(self.query.annotation_select)
sql = ', '.join(sql)
params = tuple(params)
inner_query_sql, inner_query_params = self.query.inner_query.get_compiler(
self.using, elide_empty=self.elide_empty,
).as_sql(with_col_aliases=True)
sql = 'SELECT %s FROM (%s) subquery' % (sql, inner_query_sql)
params = params + inner_query_params
return sql, params
def cursor_iter(cursor, sentinel, col_count, itersize):
"""
Yield blocks of rows from a cursor and ensure the cursor is closed when
done.
"""
try:
for rows in iter((lambda: cursor.fetchmany(itersize)), sentinel):
yield rows if col_count is None else [r[:col_count] for r in rows]
finally:
cursor.close()
|
ee49323a514d34c4685556772bbe7eeef6e3919f60521f5c00b4de1641b5c3de | from django.db import DatabaseError, InterfaceError
from django.db.backends.base.features import BaseDatabaseFeatures
from django.utils.functional import cached_property
class DatabaseFeatures(BaseDatabaseFeatures):
# Oracle crashes with "ORA-00932: inconsistent datatypes: expected - got
# BLOB" when grouping by LOBs (#24096).
allows_group_by_lob = False
interprets_empty_strings_as_nulls = True
has_select_for_update = True
has_select_for_update_nowait = True
has_select_for_update_skip_locked = True
has_select_for_update_of = True
select_for_update_of_column = True
can_return_columns_from_insert = True
supports_subqueries_in_group_by = False
ignores_unnecessary_order_by_in_subqueries = False
supports_transactions = True
supports_timezones = False
has_native_duration_field = True
can_defer_constraint_checks = True
supports_partially_nullable_unique_constraints = False
supports_deferrable_unique_constraints = True
truncates_names = True
supports_tablespaces = True
supports_sequence_reset = False
can_introspect_materialized_views = True
atomic_transactions = False
nulls_order_largest = True
requires_literal_defaults = True
closed_cursor_error_class = InterfaceError
bare_select_suffix = " FROM DUAL"
# select for update with limit can be achieved on Oracle, but not with the current backend.
supports_select_for_update_with_limit = False
supports_temporal_subtraction = True
# Oracle doesn't ignore quoted identifiers case but the current backend
# does by uppercasing all identifiers.
ignores_table_name_case = True
supports_index_on_text_field = False
create_test_procedure_without_params_sql = """
CREATE PROCEDURE "TEST_PROCEDURE" AS
V_I INTEGER;
BEGIN
V_I := 1;
END;
"""
create_test_procedure_with_int_param_sql = """
CREATE PROCEDURE "TEST_PROCEDURE" (P_I INTEGER) AS
V_I INTEGER;
BEGIN
V_I := P_I;
END;
"""
supports_callproc_kwargs = True
supports_over_clause = True
supports_frame_range_fixed_distance = True
supports_ignore_conflicts = False
max_query_params = 2**16 - 1
supports_partial_indexes = False
supports_slicing_ordering_in_compound = True
allows_multiple_constraints_on_same_fields = False
supports_boolean_expr_in_select_clause = False
supports_primitives_in_json_field = False
supports_json_field_contains = False
supports_collation_on_textfield = False
test_collations = {
'ci': 'BINARY_CI',
'cs': 'BINARY',
'non_default': 'SWEDISH_CI',
'swedish_ci': 'SWEDISH_CI',
}
test_now_utc_template = "CURRENT_TIMESTAMP AT TIME ZONE 'UTC'"
django_test_skips = {
"Oracle doesn't support SHA224.": {
'db_functions.text.test_sha224.SHA224Tests.test_basic',
'db_functions.text.test_sha224.SHA224Tests.test_transform',
},
"Oracle doesn't correctly calculate ISO 8601 week numbering before "
"1583 (the Gregorian calendar was introduced in 1582).": {
'db_functions.datetime.test_extract_trunc.DateFunctionTests.test_trunc_week_before_1000',
'db_functions.datetime.test_extract_trunc.DateFunctionWithTimeZoneTests.test_trunc_week_before_1000',
},
"Oracle doesn't support bitwise XOR.": {
'expressions.tests.ExpressionOperatorTests.test_lefthand_bitwise_xor',
'expressions.tests.ExpressionOperatorTests.test_lefthand_bitwise_xor_null',
},
"Oracle requires ORDER BY in row_number, ANSI:SQL doesn't.": {
'expressions_window.tests.WindowFunctionTests.test_row_number_no_ordering',
},
'Raises ORA-00600: internal error code.': {
'model_fields.test_jsonfield.TestQuerying.test_usage_in_subquery',
},
}
django_test_expected_failures = {
# A bug in Django/cx_Oracle with respect to string handling (#23843).
'annotations.tests.NonAggregateAnnotationTestCase.test_custom_functions',
'annotations.tests.NonAggregateAnnotationTestCase.test_custom_functions_can_ref_other_functions',
}
@cached_property
def introspected_field_types(self):
return {
**super().introspected_field_types,
'GenericIPAddressField': 'CharField',
'PositiveBigIntegerField': 'BigIntegerField',
'PositiveIntegerField': 'IntegerField',
'PositiveSmallIntegerField': 'IntegerField',
'SmallIntegerField': 'IntegerField',
'TimeField': 'DateTimeField',
}
@cached_property
def supports_collation_on_charfield(self):
with self.connection.cursor() as cursor:
try:
cursor.execute("SELECT CAST('a' AS VARCHAR2(4001)) FROM dual")
except DatabaseError as e:
if e.args[0].code == 910:
return False
raise
return True
|
28668efa34f8745e426d314869231c7702446c30226bc8e2f1d0ac7a0e2d8bb5 | import datetime
import uuid
from functools import lru_cache
from django.conf import settings
from django.db import DatabaseError, NotSupportedError
from django.db.backends.base.operations import BaseDatabaseOperations
from django.db.backends.utils import (
split_tzname_delta, strip_quotes, truncate_name,
)
from django.db.models import AutoField, Exists, ExpressionWrapper, Lookup
from django.db.models.expressions import RawSQL
from django.db.models.sql.where import WhereNode
from django.utils import timezone
from django.utils.encoding import force_bytes, force_str
from django.utils.functional import cached_property
from django.utils.regex_helper import _lazy_re_compile
from .base import Database
from .utils import BulkInsertMapper, InsertVar, Oracle_datetime
class DatabaseOperations(BaseDatabaseOperations):
# Oracle uses NUMBER(5), NUMBER(11), and NUMBER(19) for integer fields.
# SmallIntegerField uses NUMBER(11) instead of NUMBER(5), which is used by
# SmallAutoField, to preserve backward compatibility.
integer_field_ranges = {
'SmallIntegerField': (-99999999999, 99999999999),
'IntegerField': (-99999999999, 99999999999),
'BigIntegerField': (-9999999999999999999, 9999999999999999999),
'PositiveBigIntegerField': (0, 9999999999999999999),
'PositiveSmallIntegerField': (0, 99999999999),
'PositiveIntegerField': (0, 99999999999),
'SmallAutoField': (-99999, 99999),
'AutoField': (-99999999999, 99999999999),
'BigAutoField': (-9999999999999999999, 9999999999999999999),
}
set_operators = {**BaseDatabaseOperations.set_operators, 'difference': 'MINUS'}
# TODO: colorize this SQL code with style.SQL_KEYWORD(), etc.
_sequence_reset_sql = """
DECLARE
table_value integer;
seq_value integer;
seq_name user_tab_identity_cols.sequence_name%%TYPE;
BEGIN
BEGIN
SELECT sequence_name INTO seq_name FROM user_tab_identity_cols
WHERE table_name = '%(table_name)s' AND
column_name = '%(column_name)s';
EXCEPTION WHEN NO_DATA_FOUND THEN
seq_name := '%(no_autofield_sequence_name)s';
END;
SELECT NVL(MAX(%(column)s), 0) INTO table_value FROM %(table)s;
SELECT NVL(last_number - cache_size, 0) INTO seq_value FROM user_sequences
WHERE sequence_name = seq_name;
WHILE table_value > seq_value LOOP
EXECUTE IMMEDIATE 'SELECT "'||seq_name||'".nextval FROM DUAL'
INTO seq_value;
END LOOP;
END;
/"""
# Oracle doesn't support string without precision; use the max string size.
cast_char_field_without_max_length = 'NVARCHAR2(2000)'
cast_data_types = {
'AutoField': 'NUMBER(11)',
'BigAutoField': 'NUMBER(19)',
'SmallAutoField': 'NUMBER(5)',
'TextField': cast_char_field_without_max_length,
}
def cache_key_culling_sql(self):
cache_key = self.quote_name('cache_key')
return (
f'SELECT {cache_key} '
f'FROM %s '
f'ORDER BY {cache_key} OFFSET %%s ROWS FETCH FIRST 1 ROWS ONLY'
)
def date_extract_sql(self, lookup_type, field_name):
if lookup_type == 'week_day':
# TO_CHAR(field, 'D') returns an integer from 1-7, where 1=Sunday.
return "TO_CHAR(%s, 'D')" % field_name
elif lookup_type == 'iso_week_day':
return "TO_CHAR(%s - 1, 'D')" % field_name
elif lookup_type == 'week':
# IW = ISO week number
return "TO_CHAR(%s, 'IW')" % field_name
elif lookup_type == 'quarter':
return "TO_CHAR(%s, 'Q')" % field_name
elif lookup_type == 'iso_year':
return "TO_CHAR(%s, 'IYYY')" % field_name
else:
# https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/EXTRACT-datetime.html
return "EXTRACT(%s FROM %s)" % (lookup_type.upper(), field_name)
def date_trunc_sql(self, lookup_type, field_name, tzname=None):
field_name = self._convert_field_to_tz(field_name, tzname)
# https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/ROUND-and-TRUNC-Date-Functions.html
if lookup_type in ('year', 'month'):
return "TRUNC(%s, '%s')" % (field_name, lookup_type.upper())
elif lookup_type == 'quarter':
return "TRUNC(%s, 'Q')" % field_name
elif lookup_type == 'week':
return "TRUNC(%s, 'IW')" % field_name
else:
return "TRUNC(%s)" % field_name
# Oracle crashes with "ORA-03113: end-of-file on communication channel"
# if the time zone name is passed in parameter. Use interpolation instead.
# https://groups.google.com/forum/#!msg/django-developers/zwQju7hbG78/9l934yelwfsJ
# This regexp matches all time zone names from the zoneinfo database.
_tzname_re = _lazy_re_compile(r'^[\w/:+-]+$')
def _prepare_tzname_delta(self, tzname):
tzname, sign, offset = split_tzname_delta(tzname)
return f'{sign}{offset}' if offset else tzname
def _convert_field_to_tz(self, field_name, tzname):
if not (settings.USE_TZ and tzname):
return field_name
if not self._tzname_re.match(tzname):
raise ValueError("Invalid time zone name: %s" % tzname)
# Convert from connection timezone to the local time, returning
# TIMESTAMP WITH TIME ZONE and cast it back to TIMESTAMP to strip the
# TIME ZONE details.
if self.connection.timezone_name != tzname:
return "CAST((FROM_TZ(%s, '%s') AT TIME ZONE '%s') AS TIMESTAMP)" % (
field_name,
self.connection.timezone_name,
self._prepare_tzname_delta(tzname),
)
return field_name
def datetime_cast_date_sql(self, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return 'TRUNC(%s)' % field_name
def datetime_cast_time_sql(self, field_name, tzname):
# Since `TimeField` values are stored as TIMESTAMP change to the
# default date and convert the field to the specified timezone.
convert_datetime_sql = (
"TO_TIMESTAMP(CONCAT('1900-01-01 ', TO_CHAR(%s, 'HH24:MI:SS.FF')), "
"'YYYY-MM-DD HH24:MI:SS.FF')"
) % self._convert_field_to_tz(field_name, tzname)
return "CASE WHEN %s IS NOT NULL THEN %s ELSE NULL END" % (
field_name, convert_datetime_sql,
)
def datetime_extract_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return self.date_extract_sql(lookup_type, field_name)
def datetime_trunc_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
# https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/ROUND-and-TRUNC-Date-Functions.html
if lookup_type in ('year', 'month'):
sql = "TRUNC(%s, '%s')" % (field_name, lookup_type.upper())
elif lookup_type == 'quarter':
sql = "TRUNC(%s, 'Q')" % field_name
elif lookup_type == 'week':
sql = "TRUNC(%s, 'IW')" % field_name
elif lookup_type == 'day':
sql = "TRUNC(%s)" % field_name
elif lookup_type == 'hour':
sql = "TRUNC(%s, 'HH24')" % field_name
elif lookup_type == 'minute':
sql = "TRUNC(%s, 'MI')" % field_name
else:
sql = "CAST(%s AS DATE)" % field_name # Cast to DATE removes sub-second precision.
return sql
def time_trunc_sql(self, lookup_type, field_name, tzname=None):
# The implementation is similar to `datetime_trunc_sql` as both
# `DateTimeField` and `TimeField` are stored as TIMESTAMP where
# the date part of the later is ignored.
field_name = self._convert_field_to_tz(field_name, tzname)
if lookup_type == 'hour':
sql = "TRUNC(%s, 'HH24')" % field_name
elif lookup_type == 'minute':
sql = "TRUNC(%s, 'MI')" % field_name
elif lookup_type == 'second':
sql = "CAST(%s AS DATE)" % field_name # Cast to DATE removes sub-second precision.
return sql
def get_db_converters(self, expression):
converters = super().get_db_converters(expression)
internal_type = expression.output_field.get_internal_type()
if internal_type in ['JSONField', 'TextField']:
converters.append(self.convert_textfield_value)
elif internal_type == 'BinaryField':
converters.append(self.convert_binaryfield_value)
elif internal_type == 'BooleanField':
converters.append(self.convert_booleanfield_value)
elif internal_type == 'DateTimeField':
if settings.USE_TZ:
converters.append(self.convert_datetimefield_value)
elif internal_type == 'DateField':
converters.append(self.convert_datefield_value)
elif internal_type == 'TimeField':
converters.append(self.convert_timefield_value)
elif internal_type == 'UUIDField':
converters.append(self.convert_uuidfield_value)
# Oracle stores empty strings as null. If the field accepts the empty
# string, undo this to adhere to the Django convention of using
# the empty string instead of null.
if expression.output_field.empty_strings_allowed:
converters.append(
self.convert_empty_bytes
if internal_type == 'BinaryField' else
self.convert_empty_string
)
return converters
def convert_textfield_value(self, value, expression, connection):
if isinstance(value, Database.LOB):
value = value.read()
return value
def convert_binaryfield_value(self, value, expression, connection):
if isinstance(value, Database.LOB):
value = force_bytes(value.read())
return value
def convert_booleanfield_value(self, value, expression, connection):
if value in (0, 1):
value = bool(value)
return value
# cx_Oracle always returns datetime.datetime objects for
# DATE and TIMESTAMP columns, but Django wants to see a
# python datetime.date, .time, or .datetime.
def convert_datetimefield_value(self, value, expression, connection):
if value is not None:
value = timezone.make_aware(value, self.connection.timezone)
return value
def convert_datefield_value(self, value, expression, connection):
if isinstance(value, Database.Timestamp):
value = value.date()
return value
def convert_timefield_value(self, value, expression, connection):
if isinstance(value, Database.Timestamp):
value = value.time()
return value
def convert_uuidfield_value(self, value, expression, connection):
if value is not None:
value = uuid.UUID(value)
return value
@staticmethod
def convert_empty_string(value, expression, connection):
return '' if value is None else value
@staticmethod
def convert_empty_bytes(value, expression, connection):
return b'' if value is None else value
def deferrable_sql(self):
return " DEFERRABLE INITIALLY DEFERRED"
def fetch_returned_insert_columns(self, cursor, returning_params):
columns = []
for param in returning_params:
value = param.get_value()
if value == []:
raise DatabaseError(
'The database did not return a new row id. Probably '
'"ORA-1403: no data found" was raised internally but was '
'hidden by the Oracle OCI library (see '
'https://code.djangoproject.com/ticket/28859).'
)
columns.append(value[0])
return tuple(columns)
def field_cast_sql(self, db_type, internal_type):
if db_type and db_type.endswith('LOB') and internal_type != 'JSONField':
return "DBMS_LOB.SUBSTR(%s)"
else:
return "%s"
def no_limit_value(self):
return None
def limit_offset_sql(self, low_mark, high_mark):
fetch, offset = self._get_limit_offset_params(low_mark, high_mark)
return ' '.join(sql for sql in (
('OFFSET %d ROWS' % offset) if offset else None,
('FETCH FIRST %d ROWS ONLY' % fetch) if fetch else None,
) if sql)
def last_executed_query(self, cursor, sql, params):
# https://cx-oracle.readthedocs.io/en/latest/cursor.html#Cursor.statement
# The DB API definition does not define this attribute.
statement = cursor.statement
# Unlike Psycopg's `query` and MySQLdb`'s `_executed`, cx_Oracle's
# `statement` doesn't contain the query parameters. Substitute
# parameters manually.
if isinstance(params, (tuple, list)):
for i, param in enumerate(params):
statement = statement.replace(':arg%d' % i, force_str(param, errors='replace'))
elif isinstance(params, dict):
for key, param in params.items():
statement = statement.replace(':%s' % key, force_str(param, errors='replace'))
return statement
def last_insert_id(self, cursor, table_name, pk_name):
sq_name = self._get_sequence_name(cursor, strip_quotes(table_name), pk_name)
cursor.execute('"%s".currval' % sq_name)
return cursor.fetchone()[0]
def lookup_cast(self, lookup_type, internal_type=None):
if lookup_type in ('iexact', 'icontains', 'istartswith', 'iendswith'):
return "UPPER(%s)"
if internal_type == 'JSONField' and lookup_type == 'exact':
return 'DBMS_LOB.SUBSTR(%s)'
return "%s"
def max_in_list_size(self):
return 1000
def max_name_length(self):
return 30
def pk_default_value(self):
return "NULL"
def prep_for_iexact_query(self, x):
return x
def process_clob(self, value):
if value is None:
return ''
return value.read()
def quote_name(self, name):
# SQL92 requires delimited (quoted) names to be case-sensitive. When
# not quoted, Oracle has case-insensitive behavior for identifiers, but
# always defaults to uppercase.
# We simplify things by making Oracle identifiers always uppercase.
if not name.startswith('"') and not name.endswith('"'):
name = '"%s"' % truncate_name(name, self.max_name_length())
# Oracle puts the query text into a (query % args) construct, so % signs
# in names need to be escaped. The '%%' will be collapsed back to '%' at
# that stage so we aren't really making the name longer here.
name = name.replace('%', '%%')
return name.upper()
def regex_lookup(self, lookup_type):
if lookup_type == 'regex':
match_option = "'c'"
else:
match_option = "'i'"
return 'REGEXP_LIKE(%%s, %%s, %s)' % match_option
def return_insert_columns(self, fields):
if not fields:
return '', ()
field_names = []
params = []
for field in fields:
field_names.append('%s.%s' % (
self.quote_name(field.model._meta.db_table),
self.quote_name(field.column),
))
params.append(InsertVar(field))
return 'RETURNING %s INTO %s' % (
', '.join(field_names),
', '.join(['%s'] * len(params)),
), tuple(params)
def __foreign_key_constraints(self, table_name, recursive):
with self.connection.cursor() as cursor:
if recursive:
cursor.execute("""
SELECT
user_tables.table_name, rcons.constraint_name
FROM
user_tables
JOIN
user_constraints cons
ON (user_tables.table_name = cons.table_name AND cons.constraint_type = ANY('P', 'U'))
LEFT JOIN
user_constraints rcons
ON (user_tables.table_name = rcons.table_name AND rcons.constraint_type = 'R')
START WITH user_tables.table_name = UPPER(%s)
CONNECT BY NOCYCLE PRIOR cons.constraint_name = rcons.r_constraint_name
GROUP BY
user_tables.table_name, rcons.constraint_name
HAVING user_tables.table_name != UPPER(%s)
ORDER BY MAX(level) DESC
""", (table_name, table_name))
else:
cursor.execute("""
SELECT
cons.table_name, cons.constraint_name
FROM
user_constraints cons
WHERE
cons.constraint_type = 'R'
AND cons.table_name = UPPER(%s)
""", (table_name,))
return cursor.fetchall()
@cached_property
def _foreign_key_constraints(self):
# 512 is large enough to fit the ~330 tables (as of this writing) in
# Django's test suite.
return lru_cache(maxsize=512)(self.__foreign_key_constraints)
def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
if not tables:
return []
truncated_tables = {table.upper() for table in tables}
constraints = set()
# Oracle's TRUNCATE CASCADE only works with ON DELETE CASCADE foreign
# keys which Django doesn't define. Emulate the PostgreSQL behavior
# which truncates all dependent tables by manually retrieving all
# foreign key constraints and resolving dependencies.
for table in tables:
for foreign_table, constraint in self._foreign_key_constraints(table, recursive=allow_cascade):
if allow_cascade:
truncated_tables.add(foreign_table)
constraints.add((foreign_table, constraint))
sql = [
'%s %s %s %s %s %s %s %s;' % (
style.SQL_KEYWORD('ALTER'),
style.SQL_KEYWORD('TABLE'),
style.SQL_FIELD(self.quote_name(table)),
style.SQL_KEYWORD('DISABLE'),
style.SQL_KEYWORD('CONSTRAINT'),
style.SQL_FIELD(self.quote_name(constraint)),
style.SQL_KEYWORD('KEEP'),
style.SQL_KEYWORD('INDEX'),
) for table, constraint in constraints
] + [
'%s %s %s;' % (
style.SQL_KEYWORD('TRUNCATE'),
style.SQL_KEYWORD('TABLE'),
style.SQL_FIELD(self.quote_name(table)),
) for table in truncated_tables
] + [
'%s %s %s %s %s %s;' % (
style.SQL_KEYWORD('ALTER'),
style.SQL_KEYWORD('TABLE'),
style.SQL_FIELD(self.quote_name(table)),
style.SQL_KEYWORD('ENABLE'),
style.SQL_KEYWORD('CONSTRAINT'),
style.SQL_FIELD(self.quote_name(constraint)),
) for table, constraint in constraints
]
if reset_sequences:
sequences = [
sequence
for sequence in self.connection.introspection.sequence_list()
if sequence['table'].upper() in truncated_tables
]
# Since we've just deleted all the rows, running our sequence ALTER
# code will reset the sequence to 0.
sql.extend(self.sequence_reset_by_name_sql(style, sequences))
return sql
def sequence_reset_by_name_sql(self, style, sequences):
sql = []
for sequence_info in sequences:
no_autofield_sequence_name = self._get_no_autofield_sequence_name(sequence_info['table'])
table = self.quote_name(sequence_info['table'])
column = self.quote_name(sequence_info['column'] or 'id')
query = self._sequence_reset_sql % {
'no_autofield_sequence_name': no_autofield_sequence_name,
'table': table,
'column': column,
'table_name': strip_quotes(table),
'column_name': strip_quotes(column),
}
sql.append(query)
return sql
def sequence_reset_sql(self, style, model_list):
output = []
query = self._sequence_reset_sql
for model in model_list:
for f in model._meta.local_fields:
if isinstance(f, AutoField):
no_autofield_sequence_name = self._get_no_autofield_sequence_name(model._meta.db_table)
table = self.quote_name(model._meta.db_table)
column = self.quote_name(f.column)
output.append(query % {
'no_autofield_sequence_name': no_autofield_sequence_name,
'table': table,
'column': column,
'table_name': strip_quotes(table),
'column_name': strip_quotes(column),
})
# Only one AutoField is allowed per model, so don't
# continue to loop
break
return output
def start_transaction_sql(self):
return ''
def tablespace_sql(self, tablespace, inline=False):
if inline:
return "USING INDEX TABLESPACE %s" % self.quote_name(tablespace)
else:
return "TABLESPACE %s" % self.quote_name(tablespace)
def adapt_datefield_value(self, value):
"""
Transform a date value to an object compatible with what is expected
by the backend driver for date columns.
The default implementation transforms the date to text, but that is not
necessary for Oracle.
"""
return value
def adapt_datetimefield_value(self, value):
"""
Transform a datetime value to an object compatible with what is expected
by the backend driver for datetime columns.
If naive datetime is passed assumes that is in UTC. Normally Django
models.DateTimeField makes sure that if USE_TZ is True passed datetime
is timezone aware.
"""
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
# cx_Oracle doesn't support tz-aware datetimes
if timezone.is_aware(value):
if settings.USE_TZ:
value = timezone.make_naive(value, self.connection.timezone)
else:
raise ValueError("Oracle backend does not support timezone-aware datetimes when USE_TZ is False.")
return Oracle_datetime.from_datetime(value)
def adapt_timefield_value(self, value):
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
if isinstance(value, str):
return datetime.datetime.strptime(value, '%H:%M:%S')
# Oracle doesn't support tz-aware times
if timezone.is_aware(value):
raise ValueError("Oracle backend does not support timezone-aware times.")
return Oracle_datetime(1900, 1, 1, value.hour, value.minute,
value.second, value.microsecond)
def adapt_decimalfield_value(self, value, max_digits=None, decimal_places=None):
return value
def combine_expression(self, connector, sub_expressions):
lhs, rhs = sub_expressions
if connector == '%%':
return 'MOD(%s)' % ','.join(sub_expressions)
elif connector == '&':
return 'BITAND(%s)' % ','.join(sub_expressions)
elif connector == '|':
return 'BITAND(-%(lhs)s-1,%(rhs)s)+%(lhs)s' % {'lhs': lhs, 'rhs': rhs}
elif connector == '<<':
return '(%(lhs)s * POWER(2, %(rhs)s))' % {'lhs': lhs, 'rhs': rhs}
elif connector == '>>':
return 'FLOOR(%(lhs)s / POWER(2, %(rhs)s))' % {'lhs': lhs, 'rhs': rhs}
elif connector == '^':
return 'POWER(%s)' % ','.join(sub_expressions)
elif connector == '#':
raise NotSupportedError('Bitwise XOR is not supported in Oracle.')
return super().combine_expression(connector, sub_expressions)
def _get_no_autofield_sequence_name(self, table):
"""
Manually created sequence name to keep backward compatibility for
AutoFields that aren't Oracle identity columns.
"""
name_length = self.max_name_length() - 3
return '%s_SQ' % truncate_name(strip_quotes(table), name_length).upper()
def _get_sequence_name(self, cursor, table, pk_name):
cursor.execute("""
SELECT sequence_name
FROM user_tab_identity_cols
WHERE table_name = UPPER(%s)
AND column_name = UPPER(%s)""", [table, pk_name])
row = cursor.fetchone()
return self._get_no_autofield_sequence_name(table) if row is None else row[0]
def bulk_insert_sql(self, fields, placeholder_rows):
query = []
for row in placeholder_rows:
select = []
for i, placeholder in enumerate(row):
# A model without any fields has fields=[None].
if fields[i]:
internal_type = getattr(fields[i], 'target_field', fields[i]).get_internal_type()
placeholder = BulkInsertMapper.types.get(internal_type, '%s') % placeholder
# Add columns aliases to the first select to avoid "ORA-00918:
# column ambiguously defined" when two or more columns in the
# first select have the same value.
if not query:
placeholder = '%s col_%s' % (placeholder, i)
select.append(placeholder)
query.append('SELECT %s FROM DUAL' % ', '.join(select))
# Bulk insert to tables with Oracle identity columns causes Oracle to
# add sequence.nextval to it. Sequence.nextval cannot be used with the
# UNION operator. To prevent incorrect SQL, move UNION to a subquery.
return 'SELECT * FROM (%s)' % ' UNION ALL '.join(query)
def subtract_temporals(self, internal_type, lhs, rhs):
if internal_type == 'DateField':
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
params = (*lhs_params, *rhs_params)
return "NUMTODSINTERVAL(TO_NUMBER(%s - %s), 'DAY')" % (lhs_sql, rhs_sql), params
return super().subtract_temporals(internal_type, lhs, rhs)
def bulk_batch_size(self, fields, objs):
"""Oracle restricts the number of parameters in a query."""
if fields:
return self.connection.features.max_query_params // len(fields)
return len(objs)
def conditional_expression_supported_in_where_clause(self, expression):
"""
Oracle supports only EXISTS(...) or filters in the WHERE clause, others
must be compared with True.
"""
if isinstance(expression, (Exists, Lookup, WhereNode)):
return True
if isinstance(expression, ExpressionWrapper) and expression.conditional:
return self.conditional_expression_supported_in_where_clause(expression.expression)
if isinstance(expression, RawSQL) and expression.conditional:
return True
return False
|
b426ad5358e1a9b5bd24a4eff0bbfb04bc776c859aaba8290c6ae4cdab0ba759 | from django.db import ProgrammingError
from django.utils.functional import cached_property
class BaseDatabaseFeatures:
gis_enabled = False
# Oracle can't group by LOB (large object) data types.
allows_group_by_lob = True
allows_group_by_pk = False
allows_group_by_selected_pks = False
empty_fetchmany_value = []
update_can_self_select = True
# Does the backend distinguish between '' and None?
interprets_empty_strings_as_nulls = False
# Does the backend allow inserting duplicate NULL rows in a nullable
# unique field? All core backends implement this correctly, but other
# databases such as SQL Server do not.
supports_nullable_unique_constraints = True
# Does the backend allow inserting duplicate rows when a unique_together
# constraint exists and some fields are nullable but not all of them?
supports_partially_nullable_unique_constraints = True
# Does the backend support initially deferrable unique constraints?
supports_deferrable_unique_constraints = False
can_use_chunked_reads = True
can_return_columns_from_insert = False
can_return_rows_from_bulk_insert = False
has_bulk_insert = True
uses_savepoints = True
can_release_savepoints = False
# If True, don't use integer foreign keys referring to, e.g., positive
# integer primary keys.
related_fields_match_type = False
allow_sliced_subqueries_with_in = True
has_select_for_update = False
has_select_for_update_nowait = False
has_select_for_update_skip_locked = False
has_select_for_update_of = False
has_select_for_no_key_update = False
# Does the database's SELECT FOR UPDATE OF syntax require a column rather
# than a table?
select_for_update_of_column = False
# Does the default test database allow multiple connections?
# Usually an indication that the test database is in-memory
test_db_allows_multiple_connections = True
# Can an object be saved without an explicit primary key?
supports_unspecified_pk = False
# Can a fixture contain forward references? i.e., are
# FK constraints checked at the end of transaction, or
# at the end of each save operation?
supports_forward_references = True
# Does the backend truncate names properly when they are too long?
truncates_names = False
# Is there a REAL datatype in addition to floats/doubles?
has_real_datatype = False
supports_subqueries_in_group_by = True
# Does the backend ignore unnecessary ORDER BY clauses in subqueries?
ignores_unnecessary_order_by_in_subqueries = True
# Is there a true datatype for uuid?
has_native_uuid_field = False
# Is there a true datatype for timedeltas?
has_native_duration_field = False
# Does the database driver supports same type temporal data subtraction
# by returning the type used to store duration field?
supports_temporal_subtraction = False
# Does the __regex lookup support backreferencing and grouping?
supports_regex_backreferencing = True
# Can date/datetime lookups be performed using a string?
supports_date_lookup_using_string = True
# Can datetimes with timezones be used?
supports_timezones = True
# Does the database have a copy of the zoneinfo database?
has_zoneinfo_database = True
# When performing a GROUP BY, is an ORDER BY NULL required
# to remove any ordering?
requires_explicit_null_ordering_when_grouping = False
# Does the backend order NULL values as largest or smallest?
nulls_order_largest = False
# Does the backend support NULLS FIRST and NULLS LAST in ORDER BY?
supports_order_by_nulls_modifier = True
# Does the backend orders NULLS FIRST by default?
order_by_nulls_first = False
# The database's limit on the number of query parameters.
max_query_params = None
# Can an object have an autoincrement primary key of 0?
allows_auto_pk_0 = True
# Do we need to NULL a ForeignKey out, or can the constraint check be
# deferred
can_defer_constraint_checks = False
# Does the backend support tablespaces? Default to False because it isn't
# in the SQL standard.
supports_tablespaces = False
# Does the backend reset sequences between tests?
supports_sequence_reset = True
# Can the backend introspect the default value of a column?
can_introspect_default = True
# Confirm support for introspected foreign keys
# Every database can do this reliably, except MySQL,
# which can't do it for MyISAM tables
can_introspect_foreign_keys = True
# Map fields which some backends may not be able to differentiate to the
# field it's introspected as.
introspected_field_types = {
'AutoField': 'AutoField',
'BigAutoField': 'BigAutoField',
'BigIntegerField': 'BigIntegerField',
'BinaryField': 'BinaryField',
'BooleanField': 'BooleanField',
'CharField': 'CharField',
'DurationField': 'DurationField',
'GenericIPAddressField': 'GenericIPAddressField',
'IntegerField': 'IntegerField',
'PositiveBigIntegerField': 'PositiveBigIntegerField',
'PositiveIntegerField': 'PositiveIntegerField',
'PositiveSmallIntegerField': 'PositiveSmallIntegerField',
'SmallAutoField': 'SmallAutoField',
'SmallIntegerField': 'SmallIntegerField',
'TimeField': 'TimeField',
}
# Can the backend introspect the column order (ASC/DESC) for indexes?
supports_index_column_ordering = True
# Does the backend support introspection of materialized views?
can_introspect_materialized_views = False
# Support for the DISTINCT ON clause
can_distinct_on_fields = False
# Does the backend prevent running SQL queries in broken transactions?
atomic_transactions = True
# Can we roll back DDL in a transaction?
can_rollback_ddl = False
# Does it support operations requiring references rename in a transaction?
supports_atomic_references_rename = True
# Can we issue more than one ALTER COLUMN clause in an ALTER TABLE?
supports_combined_alters = False
# Does it support foreign keys?
supports_foreign_keys = True
# Can it create foreign key constraints inline when adding columns?
can_create_inline_fk = True
# Does it automatically index foreign keys?
indexes_foreign_keys = True
# Does it support CHECK constraints?
supports_column_check_constraints = True
supports_table_check_constraints = True
# Does the backend support introspection of CHECK constraints?
can_introspect_check_constraints = True
# Does the backend support 'pyformat' style ("... %(name)s ...", {'name': value})
# parameter passing? Note this can be provided by the backend even if not
# supported by the Python driver
supports_paramstyle_pyformat = True
# Does the backend require literal defaults, rather than parameterized ones?
requires_literal_defaults = False
# Does the backend require a connection reset after each material schema change?
connection_persists_old_columns = False
# What kind of error does the backend throw when accessing closed cursor?
closed_cursor_error_class = ProgrammingError
# Does 'a' LIKE 'A' match?
has_case_insensitive_like = False
# Suffix for backends that don't support "SELECT xxx;" queries.
bare_select_suffix = ''
# If NULL is implied on columns without needing to be explicitly specified
implied_column_null = False
# Does the backend support "select for update" queries with limit (and offset)?
supports_select_for_update_with_limit = True
# Does the backend ignore null expressions in GREATEST and LEAST queries unless
# every expression is null?
greatest_least_ignores_nulls = False
# Can the backend clone databases for parallel test execution?
# Defaults to False to allow third-party backends to opt-in.
can_clone_databases = False
# Does the backend consider table names with different casing to
# be equal?
ignores_table_name_case = False
# Place FOR UPDATE right after FROM clause. Used on MSSQL.
for_update_after_from = False
# Combinatorial flags
supports_select_union = True
supports_select_intersection = True
supports_select_difference = True
supports_slicing_ordering_in_compound = False
supports_parentheses_in_compound = True
# Does the database support SQL 2003 FILTER (WHERE ...) in aggregate
# expressions?
supports_aggregate_filter_clause = False
# Does the backend support indexing a TextField?
supports_index_on_text_field = True
# Does the backend support window expressions (expression OVER (...))?
supports_over_clause = False
supports_frame_range_fixed_distance = False
only_supports_unbounded_with_preceding_and_following = False
# Does the backend support CAST with precision?
supports_cast_with_precision = True
# How many second decimals does the database return when casting a value to
# a type with time?
time_cast_precision = 6
# SQL to create a procedure for use by the Django test suite. The
# functionality of the procedure isn't important.
create_test_procedure_without_params_sql = None
create_test_procedure_with_int_param_sql = None
# Does the backend support keyword parameters for cursor.callproc()?
supports_callproc_kwargs = False
# What formats does the backend EXPLAIN syntax support?
supported_explain_formats = set()
# Does DatabaseOperations.explain_query_prefix() raise ValueError if
# unknown kwargs are passed to QuerySet.explain()?
validates_explain_options = True
# Does the backend support the default parameter in lead() and lag()?
supports_default_in_lead_lag = True
# Does the backend support ignoring constraint or uniqueness errors during
# INSERT?
supports_ignore_conflicts = True
# Does this backend require casting the results of CASE expressions used
# in UPDATE statements to ensure the expression has the correct type?
requires_casted_case_in_updates = False
# Does the backend support partial indexes (CREATE INDEX ... WHERE ...)?
supports_partial_indexes = True
supports_functions_in_partial_indexes = True
# Does the backend support covering indexes (CREATE INDEX ... INCLUDE ...)?
supports_covering_indexes = False
# Does the backend support indexes on expressions?
supports_expression_indexes = True
# Does the backend treat COLLATE as an indexed expression?
collate_as_index_expression = False
# Does the database allow more than one constraint or index on the same
# field(s)?
allows_multiple_constraints_on_same_fields = True
# Does the backend support boolean expressions in SELECT and GROUP BY
# clauses?
supports_boolean_expr_in_select_clause = True
# Does the backend support JSONField?
supports_json_field = True
# Can the backend introspect a JSONField?
can_introspect_json_field = True
# Does the backend support primitives in JSONField?
supports_primitives_in_json_field = True
# Is there a true datatype for JSON?
has_native_json_field = False
# Does the backend use PostgreSQL-style JSON operators like '->'?
has_json_operators = False
# Does the backend support __contains and __contained_by lookups for
# a JSONField?
supports_json_field_contains = True
# Does value__d__contains={'f': 'g'} (without a list around the dict) match
# {'d': [{'f': 'g'}]}?
json_key_contains_list_matching_requires_list = False
# Does the backend support JSONObject() database function?
has_json_object_function = True
# Does the backend support column collations?
supports_collation_on_charfield = True
supports_collation_on_textfield = True
# Does the backend support non-deterministic collations?
supports_non_deterministic_collations = True
# Collation names for use by the Django test suite.
test_collations = {
'ci': None, # Case-insensitive.
'cs': None, # Case-sensitive.
'non_default': None, # Non-default.
'swedish_ci': None # Swedish case-insensitive.
}
# SQL template override for tests.aggregation.tests.NowUTC
test_now_utc_template = None
# A set of dotted paths to tests in Django's test suite that are expected
# to fail on this database.
django_test_expected_failures = set()
# A map of reasons to sets of dotted paths to tests in Django's test suite
# that should be skipped for this database.
django_test_skips = {}
def __init__(self, connection):
self.connection = connection
@cached_property
def supports_explaining_query_execution(self):
"""Does this backend support explaining query execution?"""
return self.connection.ops.explain_prefix is not None
@cached_property
def supports_transactions(self):
"""Confirm support for transactions."""
with self.connection.cursor() as cursor:
cursor.execute('CREATE TABLE ROLLBACK_TEST (X INT)')
self.connection.set_autocommit(False)
cursor.execute('INSERT INTO ROLLBACK_TEST (X) VALUES (8)')
self.connection.rollback()
self.connection.set_autocommit(True)
cursor.execute('SELECT COUNT(X) FROM ROLLBACK_TEST')
count, = cursor.fetchone()
cursor.execute('DROP TABLE ROLLBACK_TEST')
return count == 0
def allows_group_by_selected_pks_on_model(self, model):
if not self.allows_group_by_selected_pks:
return False
return model._meta.managed
|
cce1eef6f2855162041bd058f52fc762c3c4e5c7dc956c0a217bbf88f3e29e98 | import datetime
import decimal
from importlib import import_module
import sqlparse
from django.conf import settings
from django.db import NotSupportedError, transaction
from django.db.backends import utils
from django.utils import timezone
from django.utils.encoding import force_str
class BaseDatabaseOperations:
"""
Encapsulate backend-specific differences, such as the way a backend
performs ordering or calculates the ID of a recently-inserted row.
"""
compiler_module = "django.db.models.sql.compiler"
# Integer field safe ranges by `internal_type` as documented
# in docs/ref/models/fields.txt.
integer_field_ranges = {
'SmallIntegerField': (-32768, 32767),
'IntegerField': (-2147483648, 2147483647),
'BigIntegerField': (-9223372036854775808, 9223372036854775807),
'PositiveBigIntegerField': (0, 9223372036854775807),
'PositiveSmallIntegerField': (0, 32767),
'PositiveIntegerField': (0, 2147483647),
'SmallAutoField': (-32768, 32767),
'AutoField': (-2147483648, 2147483647),
'BigAutoField': (-9223372036854775808, 9223372036854775807),
}
set_operators = {
'union': 'UNION',
'intersection': 'INTERSECT',
'difference': 'EXCEPT',
}
# Mapping of Field.get_internal_type() (typically the model field's class
# name) to the data type to use for the Cast() function, if different from
# DatabaseWrapper.data_types.
cast_data_types = {}
# CharField data type if the max_length argument isn't provided.
cast_char_field_without_max_length = None
# Start and end points for window expressions.
PRECEDING = 'PRECEDING'
FOLLOWING = 'FOLLOWING'
UNBOUNDED_PRECEDING = 'UNBOUNDED ' + PRECEDING
UNBOUNDED_FOLLOWING = 'UNBOUNDED ' + FOLLOWING
CURRENT_ROW = 'CURRENT ROW'
# Prefix for EXPLAIN queries, or None EXPLAIN isn't supported.
explain_prefix = None
def __init__(self, connection):
self.connection = connection
self._cache = None
def autoinc_sql(self, table, column):
"""
Return any SQL needed to support auto-incrementing primary keys, or
None if no SQL is necessary.
This SQL is executed when a table is created.
"""
return None
def bulk_batch_size(self, fields, objs):
"""
Return the maximum allowed batch size for the backend. The fields
are the fields going to be inserted in the batch, the objs contains
all the objects to be inserted.
"""
return len(objs)
def format_for_duration_arithmetic(self, sql):
raise NotImplementedError(
'subclasses of BaseDatabaseOperations may require a '
'format_for_duration_arithmetic() method.'
)
def cache_key_culling_sql(self):
"""
Return an SQL query that retrieves the first cache key greater than the
n smallest.
This is used by the 'db' cache backend to determine where to start
culling.
"""
cache_key = self.quote_name('cache_key')
return f'SELECT {cache_key} FROM %s ORDER BY {cache_key} LIMIT 1 OFFSET %%s'
def unification_cast_sql(self, output_field):
"""
Given a field instance, return the SQL that casts the result of a union
to that type. The resulting string should contain a '%s' placeholder
for the expression being cast.
"""
return '%s'
def date_extract_sql(self, lookup_type, field_name):
"""
Given a lookup_type of 'year', 'month', or 'day', return the SQL that
extracts a value from the given date field field_name.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a date_extract_sql() method')
def date_trunc_sql(self, lookup_type, field_name, tzname=None):
"""
Given a lookup_type of 'year', 'month', or 'day', return the SQL that
truncates the given date or datetime field field_name to a date object
with only the given specificity.
If `tzname` is provided, the given value is truncated in a specific
timezone.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a date_trunc_sql() method.')
def datetime_cast_date_sql(self, field_name, tzname):
"""
Return the SQL to cast a datetime value to date value.
"""
raise NotImplementedError(
'subclasses of BaseDatabaseOperations may require a '
'datetime_cast_date_sql() method.'
)
def datetime_cast_time_sql(self, field_name, tzname):
"""
Return the SQL to cast a datetime value to time value.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_cast_time_sql() method')
def datetime_extract_sql(self, lookup_type, field_name, tzname):
"""
Given a lookup_type of 'year', 'month', 'day', 'hour', 'minute', or
'second', return the SQL that extracts a value from the given
datetime field field_name.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_extract_sql() method')
def datetime_trunc_sql(self, lookup_type, field_name, tzname):
"""
Given a lookup_type of 'year', 'month', 'day', 'hour', 'minute', or
'second', return the SQL that truncates the given datetime field
field_name to a datetime object with only the given specificity.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a datetime_trunc_sql() method')
def time_trunc_sql(self, lookup_type, field_name, tzname=None):
"""
Given a lookup_type of 'hour', 'minute' or 'second', return the SQL
that truncates the given time or datetime field field_name to a time
object with only the given specificity.
If `tzname` is provided, the given value is truncated in a specific
timezone.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a time_trunc_sql() method')
def time_extract_sql(self, lookup_type, field_name):
"""
Given a lookup_type of 'hour', 'minute', or 'second', return the SQL
that extracts a value from the given time field field_name.
"""
return self.date_extract_sql(lookup_type, field_name)
def deferrable_sql(self):
"""
Return the SQL to make a constraint "initially deferred" during a
CREATE TABLE statement.
"""
return ''
def distinct_sql(self, fields, params):
"""
Return an SQL DISTINCT clause which removes duplicate rows from the
result set. If any fields are given, only check the given fields for
duplicates.
"""
if fields:
raise NotSupportedError('DISTINCT ON fields is not supported by this database backend')
else:
return ['DISTINCT'], []
def fetch_returned_insert_columns(self, cursor, returning_params):
"""
Given a cursor object that has just performed an INSERT...RETURNING
statement into a table, return the newly created data.
"""
return cursor.fetchone()
def field_cast_sql(self, db_type, internal_type):
"""
Given a column type (e.g. 'BLOB', 'VARCHAR') and an internal type
(e.g. 'GenericIPAddressField'), return the SQL to cast it before using
it in a WHERE statement. The resulting string should contain a '%s'
placeholder for the column being searched against.
"""
return '%s'
def force_no_ordering(self):
"""
Return a list used in the "ORDER BY" clause to force no ordering at
all. Return an empty list to include nothing in the ordering.
"""
return []
def for_update_sql(self, nowait=False, skip_locked=False, of=(), no_key=False):
"""
Return the FOR UPDATE SQL clause to lock rows for an update operation.
"""
return 'FOR%s UPDATE%s%s%s' % (
' NO KEY' if no_key else '',
' OF %s' % ', '.join(of) if of else '',
' NOWAIT' if nowait else '',
' SKIP LOCKED' if skip_locked else '',
)
def _get_limit_offset_params(self, low_mark, high_mark):
offset = low_mark or 0
if high_mark is not None:
return (high_mark - offset), offset
elif offset:
return self.connection.ops.no_limit_value(), offset
return None, offset
def limit_offset_sql(self, low_mark, high_mark):
"""Return LIMIT/OFFSET SQL clause."""
limit, offset = self._get_limit_offset_params(low_mark, high_mark)
return ' '.join(sql for sql in (
('LIMIT %d' % limit) if limit else None,
('OFFSET %d' % offset) if offset else None,
) if sql)
def last_executed_query(self, cursor, sql, params):
"""
Return a string of the query last executed by the given cursor, with
placeholders replaced with actual values.
`sql` is the raw query containing placeholders and `params` is the
sequence of parameters. These are used by default, but this method
exists for database backends to provide a better implementation
according to their own quoting schemes.
"""
# Convert params to contain string values.
def to_string(s):
return force_str(s, strings_only=True, errors='replace')
if isinstance(params, (list, tuple)):
u_params = tuple(to_string(val) for val in params)
elif params is None:
u_params = ()
else:
u_params = {to_string(k): to_string(v) for k, v in params.items()}
return "QUERY = %r - PARAMS = %r" % (sql, u_params)
def last_insert_id(self, cursor, table_name, pk_name):
"""
Given a cursor object that has just performed an INSERT statement into
a table that has an auto-incrementing ID, return the newly created ID.
`pk_name` is the name of the primary-key column.
"""
return cursor.lastrowid
def lookup_cast(self, lookup_type, internal_type=None):
"""
Return the string to use in a query when performing lookups
("contains", "like", etc.). It should contain a '%s' placeholder for
the column being searched against.
"""
return "%s"
def max_in_list_size(self):
"""
Return the maximum number of items that can be passed in a single 'IN'
list condition, or None if the backend does not impose a limit.
"""
return None
def max_name_length(self):
"""
Return the maximum length of table and column names, or None if there
is no limit.
"""
return None
def no_limit_value(self):
"""
Return the value to use for the LIMIT when we are wanting "LIMIT
infinity". Return None if the limit clause can be omitted in this case.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a no_limit_value() method')
def pk_default_value(self):
"""
Return the value to use during an INSERT statement to specify that
the field should use its default value.
"""
return 'DEFAULT'
def prepare_sql_script(self, sql):
"""
Take an SQL script that may contain multiple lines and return a list
of statements to feed to successive cursor.execute() calls.
Since few databases are able to process raw SQL scripts in a single
cursor.execute() call and PEP 249 doesn't talk about this use case,
the default implementation is conservative.
"""
return [
sqlparse.format(statement, strip_comments=True)
for statement in sqlparse.split(sql) if statement
]
def process_clob(self, value):
"""
Return the value of a CLOB column, for backends that return a locator
object that requires additional processing.
"""
return value
def return_insert_columns(self, fields):
"""
For backends that support returning columns as part of an insert query,
return the SQL and params to append to the INSERT query. The returned
fragment should contain a format string to hold the appropriate column.
"""
pass
def compiler(self, compiler_name):
"""
Return the SQLCompiler class corresponding to the given name,
in the namespace corresponding to the `compiler_module` attribute
on this backend.
"""
if self._cache is None:
self._cache = import_module(self.compiler_module)
return getattr(self._cache, compiler_name)
def quote_name(self, name):
"""
Return a quoted version of the given table, index, or column name. Do
not quote the given name if it's already been quoted.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a quote_name() method')
def regex_lookup(self, lookup_type):
"""
Return the string to use in a query when performing regular expression
lookups (using "regex" or "iregex"). It should contain a '%s'
placeholder for the column being searched against.
If the feature is not supported (or part of it is not supported), raise
NotImplementedError.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations may require a regex_lookup() method')
def savepoint_create_sql(self, sid):
"""
Return the SQL for starting a new savepoint. Only required if the
"uses_savepoints" feature is True. The "sid" parameter is a string
for the savepoint id.
"""
return "SAVEPOINT %s" % self.quote_name(sid)
def savepoint_commit_sql(self, sid):
"""
Return the SQL for committing the given savepoint.
"""
return "RELEASE SAVEPOINT %s" % self.quote_name(sid)
def savepoint_rollback_sql(self, sid):
"""
Return the SQL for rolling back the given savepoint.
"""
return "ROLLBACK TO SAVEPOINT %s" % self.quote_name(sid)
def set_time_zone_sql(self):
"""
Return the SQL that will set the connection's time zone.
Return '' if the backend doesn't support time zones.
"""
return ''
def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
"""
Return a list of SQL statements required to remove all data from
the given database tables (without actually removing the tables
themselves).
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
If `reset_sequences` is True, the list includes SQL statements required
to reset the sequences.
The `allow_cascade` argument determines whether truncation may cascade
to tables with foreign keys pointing the tables being truncated.
PostgreSQL requires a cascade even if these tables are empty.
"""
raise NotImplementedError('subclasses of BaseDatabaseOperations must provide an sql_flush() method')
def execute_sql_flush(self, sql_list):
"""Execute a list of SQL statements to flush the database."""
with transaction.atomic(
using=self.connection.alias,
savepoint=self.connection.features.can_rollback_ddl,
):
with self.connection.cursor() as cursor:
for sql in sql_list:
cursor.execute(sql)
def sequence_reset_by_name_sql(self, style, sequences):
"""
Return a list of the SQL statements required to reset sequences
passed in `sequences`.
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
"""
return []
def sequence_reset_sql(self, style, model_list):
"""
Return a list of the SQL statements required to reset sequences for
the given models.
The `style` argument is a Style object as returned by either
color_style() or no_style() in django.core.management.color.
"""
return [] # No sequence reset required by default.
def start_transaction_sql(self):
"""Return the SQL statement required to start a transaction."""
return "BEGIN;"
def end_transaction_sql(self, success=True):
"""Return the SQL statement required to end a transaction."""
if not success:
return "ROLLBACK;"
return "COMMIT;"
def tablespace_sql(self, tablespace, inline=False):
"""
Return the SQL that will be used in a query to define the tablespace.
Return '' if the backend doesn't support tablespaces.
If `inline` is True, append the SQL to a row; otherwise append it to
the entire CREATE TABLE or CREATE INDEX statement.
"""
return ''
def prep_for_like_query(self, x):
"""Prepare a value for use in a LIKE query."""
return str(x).replace("\\", "\\\\").replace("%", r"\%").replace("_", r"\_")
# Same as prep_for_like_query(), but called for "iexact" matches, which
# need not necessarily be implemented using "LIKE" in the backend.
prep_for_iexact_query = prep_for_like_query
def validate_autopk_value(self, value):
"""
Certain backends do not accept some values for "serial" fields
(for example zero in MySQL). Raise a ValueError if the value is
invalid, otherwise return the validated value.
"""
return value
def adapt_unknown_value(self, value):
"""
Transform a value to something compatible with the backend driver.
This method only depends on the type of the value. It's designed for
cases where the target type isn't known, such as .raw() SQL queries.
As a consequence it may not work perfectly in all circumstances.
"""
if isinstance(value, datetime.datetime): # must be before date
return self.adapt_datetimefield_value(value)
elif isinstance(value, datetime.date):
return self.adapt_datefield_value(value)
elif isinstance(value, datetime.time):
return self.adapt_timefield_value(value)
elif isinstance(value, decimal.Decimal):
return self.adapt_decimalfield_value(value)
else:
return value
def adapt_datefield_value(self, value):
"""
Transform a date value to an object compatible with what is expected
by the backend driver for date columns.
"""
if value is None:
return None
return str(value)
def adapt_datetimefield_value(self, value):
"""
Transform a datetime value to an object compatible with what is expected
by the backend driver for datetime columns.
"""
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
return str(value)
def adapt_timefield_value(self, value):
"""
Transform a time value to an object compatible with what is expected
by the backend driver for time columns.
"""
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
if timezone.is_aware(value):
raise ValueError("Django does not support timezone-aware times.")
return str(value)
def adapt_decimalfield_value(self, value, max_digits=None, decimal_places=None):
"""
Transform a decimal.Decimal value to an object compatible with what is
expected by the backend driver for decimal (numeric) columns.
"""
return utils.format_number(value, max_digits, decimal_places)
def adapt_ipaddressfield_value(self, value):
"""
Transform a string representation of an IP address into the expected
type for the backend driver.
"""
return value or None
def year_lookup_bounds_for_date_field(self, value, iso_year=False):
"""
Return a two-elements list with the lower and upper bound to be used
with a BETWEEN operator to query a DateField value using a year
lookup.
`value` is an int, containing the looked-up year.
If `iso_year` is True, return bounds for ISO-8601 week-numbering years.
"""
if iso_year:
first = datetime.date.fromisocalendar(value, 1, 1)
second = (
datetime.date.fromisocalendar(value + 1, 1, 1) -
datetime.timedelta(days=1)
)
else:
first = datetime.date(value, 1, 1)
second = datetime.date(value, 12, 31)
first = self.adapt_datefield_value(first)
second = self.adapt_datefield_value(second)
return [first, second]
def year_lookup_bounds_for_datetime_field(self, value, iso_year=False):
"""
Return a two-elements list with the lower and upper bound to be used
with a BETWEEN operator to query a DateTimeField value using a year
lookup.
`value` is an int, containing the looked-up year.
If `iso_year` is True, return bounds for ISO-8601 week-numbering years.
"""
if iso_year:
first = datetime.datetime.fromisocalendar(value, 1, 1)
second = (
datetime.datetime.fromisocalendar(value + 1, 1, 1) -
datetime.timedelta(microseconds=1)
)
else:
first = datetime.datetime(value, 1, 1)
second = datetime.datetime(value, 12, 31, 23, 59, 59, 999999)
if settings.USE_TZ:
tz = timezone.get_current_timezone()
first = timezone.make_aware(first, tz)
second = timezone.make_aware(second, tz)
first = self.adapt_datetimefield_value(first)
second = self.adapt_datetimefield_value(second)
return [first, second]
def get_db_converters(self, expression):
"""
Return a list of functions needed to convert field data.
Some field types on some backends do not provide data in the correct
format, this is the hook for converter functions.
"""
return []
def convert_durationfield_value(self, value, expression, connection):
if value is not None:
return datetime.timedelta(0, 0, value)
def check_expression_support(self, expression):
"""
Check that the backend supports the provided expression.
This is used on specific backends to rule out known expressions
that have problematic or nonexistent implementations. If the
expression has a known problem, the backend should raise
NotSupportedError.
"""
pass
def conditional_expression_supported_in_where_clause(self, expression):
"""
Return True, if the conditional expression is supported in the WHERE
clause.
"""
return True
def combine_expression(self, connector, sub_expressions):
"""
Combine a list of subexpressions into a single expression, using
the provided connecting operator. This is required because operators
can vary between backends (e.g., Oracle with %% and &) and between
subexpression types (e.g., date expressions).
"""
conn = ' %s ' % connector
return conn.join(sub_expressions)
def combine_duration_expression(self, connector, sub_expressions):
return self.combine_expression(connector, sub_expressions)
def binary_placeholder_sql(self, value):
"""
Some backends require special syntax to insert binary content (MySQL
for example uses '_binary %s').
"""
return '%s'
def modify_insert_params(self, placeholder, params):
"""
Allow modification of insert parameters. Needed for Oracle Spatial
backend due to #10888.
"""
return params
def integer_field_range(self, internal_type):
"""
Given an integer field internal type (e.g. 'PositiveIntegerField'),
return a tuple of the (min_value, max_value) form representing the
range of the column type bound to the field.
"""
return self.integer_field_ranges[internal_type]
def subtract_temporals(self, internal_type, lhs, rhs):
if self.connection.features.supports_temporal_subtraction:
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
return '(%s - %s)' % (lhs_sql, rhs_sql), (*lhs_params, *rhs_params)
raise NotSupportedError("This backend does not support %s subtraction." % internal_type)
def window_frame_start(self, start):
if isinstance(start, int):
if start < 0:
return '%d %s' % (abs(start), self.PRECEDING)
elif start == 0:
return self.CURRENT_ROW
elif start is None:
return self.UNBOUNDED_PRECEDING
raise ValueError("start argument must be a negative integer, zero, or None, but got '%s'." % start)
def window_frame_end(self, end):
if isinstance(end, int):
if end == 0:
return self.CURRENT_ROW
elif end > 0:
return '%d %s' % (end, self.FOLLOWING)
elif end is None:
return self.UNBOUNDED_FOLLOWING
raise ValueError("end argument must be a positive integer, zero, or None, but got '%s'." % end)
def window_frame_rows_start_end(self, start=None, end=None):
"""
Return SQL for start and end points in an OVER clause window frame.
"""
if not self.connection.features.supports_over_clause:
raise NotSupportedError('This backend does not support window expressions.')
return self.window_frame_start(start), self.window_frame_end(end)
def window_frame_range_start_end(self, start=None, end=None):
start_, end_ = self.window_frame_rows_start_end(start, end)
if (
self.connection.features.only_supports_unbounded_with_preceding_and_following and
((start and start < 0) or (end and end > 0))
):
raise NotSupportedError(
'%s only supports UNBOUNDED together with PRECEDING and '
'FOLLOWING.' % self.connection.display_name
)
return start_, end_
def explain_query_prefix(self, format=None, **options):
if not self.connection.features.supports_explaining_query_execution:
raise NotSupportedError('This backend does not support explaining query execution.')
if format:
supported_formats = self.connection.features.supported_explain_formats
normalized_format = format.upper()
if normalized_format not in supported_formats:
msg = '%s is not a recognized format.' % normalized_format
if supported_formats:
msg += ' Allowed formats: %s' % ', '.join(sorted(supported_formats))
raise ValueError(msg)
if options:
raise ValueError('Unknown options: %s' % ', '.join(sorted(options.keys())))
return self.explain_prefix
def insert_statement(self, ignore_conflicts=False):
return 'INSERT INTO'
def ignore_conflicts_suffix_sql(self, ignore_conflicts=None):
return ''
|
4ca1e5725efc0fb779c57330a8a63c26311cb9ec0392ee8f4632f80a529bb2b4 | import operator
from django.db.backends.base.features import BaseDatabaseFeatures
from django.utils.functional import cached_property
class DatabaseFeatures(BaseDatabaseFeatures):
empty_fetchmany_value = ()
allows_group_by_pk = True
related_fields_match_type = True
# MySQL doesn't support sliced subqueries with IN/ALL/ANY/SOME.
allow_sliced_subqueries_with_in = False
has_select_for_update = True
supports_forward_references = False
supports_regex_backreferencing = False
supports_date_lookup_using_string = False
supports_timezones = False
requires_explicit_null_ordering_when_grouping = True
can_release_savepoints = True
atomic_transactions = False
can_clone_databases = True
supports_temporal_subtraction = True
supports_select_intersection = False
supports_select_difference = False
supports_slicing_ordering_in_compound = True
supports_index_on_text_field = False
create_test_procedure_without_params_sql = """
CREATE PROCEDURE test_procedure ()
BEGIN
DECLARE V_I INTEGER;
SET V_I = 1;
END;
"""
create_test_procedure_with_int_param_sql = """
CREATE PROCEDURE test_procedure (P_I INTEGER)
BEGIN
DECLARE V_I INTEGER;
SET V_I = P_I;
END;
"""
# Neither MySQL nor MariaDB support partial indexes.
supports_partial_indexes = False
# COLLATE must be wrapped in parentheses because MySQL treats COLLATE as an
# indexed expression.
collate_as_index_expression = True
supports_order_by_nulls_modifier = False
order_by_nulls_first = True
@cached_property
def test_collations(self):
charset = 'utf8'
if self.connection.mysql_is_mariadb and self.connection.mysql_version >= (10, 6):
# utf8 is an alias for utf8mb3 in MariaDB 10.6+.
charset = 'utf8mb3'
return {
'ci': f'{charset}_general_ci',
'non_default': f'{charset}_esperanto_ci',
'swedish_ci': f'{charset}_swedish_ci',
}
test_now_utc_template = 'UTC_TIMESTAMP'
@cached_property
def django_test_skips(self):
skips = {
"This doesn't work on MySQL.": {
'db_functions.comparison.test_greatest.GreatestTests.test_coalesce_workaround',
'db_functions.comparison.test_least.LeastTests.test_coalesce_workaround',
},
'Running on MySQL requires utf8mb4 encoding (#18392).': {
'model_fields.test_textfield.TextFieldTests.test_emoji',
'model_fields.test_charfield.TestCharField.test_emoji',
},
"MySQL doesn't support functional indexes on a function that "
"returns JSON": {
'schema.tests.SchemaTests.test_func_index_json_key_transform',
},
"MySQL supports multiplying and dividing DurationFields by a "
"scalar value but it's not implemented (#25287).": {
'expressions.tests.FTimeDeltaTests.test_durationfield_multiply_divide',
},
}
if 'ONLY_FULL_GROUP_BY' in self.connection.sql_mode:
skips.update({
'GROUP BY optimization does not work properly when '
'ONLY_FULL_GROUP_BY mode is enabled on MySQL, see #31331.': {
'aggregation.tests.AggregateTestCase.test_aggregation_subquery_annotation_multivalued',
'annotations.tests.NonAggregateAnnotationTestCase.test_annotation_aggregate_with_m2o',
},
})
if not self.connection.mysql_is_mariadb and self.connection.mysql_version < (8,):
skips.update({
'Casting to datetime/time is not supported by MySQL < 8.0. (#30224)': {
'aggregation.tests.AggregateTestCase.test_aggregation_default_using_time_from_python',
'aggregation.tests.AggregateTestCase.test_aggregation_default_using_datetime_from_python',
},
'MySQL < 8.0 returns string type instead of datetime/time. (#30224)': {
'aggregation.tests.AggregateTestCase.test_aggregation_default_using_time_from_database',
'aggregation.tests.AggregateTestCase.test_aggregation_default_using_datetime_from_database',
},
})
if (
self.connection.mysql_is_mariadb and
(10, 4, 3) < self.connection.mysql_version < (10, 5, 2)
):
skips.update({
'https://jira.mariadb.org/browse/MDEV-19598': {
'schema.tests.SchemaTests.test_alter_not_unique_field_to_primary_key',
},
})
if (
self.connection.mysql_is_mariadb and
(10, 4, 12) < self.connection.mysql_version < (10, 5)
):
skips.update({
'https://jira.mariadb.org/browse/MDEV-22775': {
'schema.tests.SchemaTests.test_alter_pk_with_self_referential_field',
},
})
if not self.supports_explain_analyze:
skips.update({
'MariaDB and MySQL >= 8.0.18 specific.': {
'queries.test_explain.ExplainTests.test_mysql_analyze',
},
})
return skips
@cached_property
def _mysql_storage_engine(self):
"Internal method used in Django tests. Don't rely on this from your code"
return self.connection.mysql_server_data['default_storage_engine']
@cached_property
def allows_auto_pk_0(self):
"""
Autoincrement primary key can be set to 0 if it doesn't generate new
autoincrement values.
"""
return 'NO_AUTO_VALUE_ON_ZERO' in self.connection.sql_mode
@cached_property
def update_can_self_select(self):
return self.connection.mysql_is_mariadb and self.connection.mysql_version >= (10, 3, 2)
@cached_property
def can_introspect_foreign_keys(self):
"Confirm support for introspected foreign keys"
return self._mysql_storage_engine != 'MyISAM'
@cached_property
def introspected_field_types(self):
return {
**super().introspected_field_types,
'BinaryField': 'TextField',
'BooleanField': 'IntegerField',
'DurationField': 'BigIntegerField',
'GenericIPAddressField': 'CharField',
}
@cached_property
def can_return_columns_from_insert(self):
return self.connection.mysql_is_mariadb and self.connection.mysql_version >= (10, 5, 0)
can_return_rows_from_bulk_insert = property(operator.attrgetter('can_return_columns_from_insert'))
@cached_property
def has_zoneinfo_database(self):
return self.connection.mysql_server_data['has_zoneinfo_database']
@cached_property
def is_sql_auto_is_null_enabled(self):
return self.connection.mysql_server_data['sql_auto_is_null']
@cached_property
def supports_over_clause(self):
if self.connection.mysql_is_mariadb:
return True
return self.connection.mysql_version >= (8, 0, 2)
supports_frame_range_fixed_distance = property(operator.attrgetter('supports_over_clause'))
@cached_property
def supports_column_check_constraints(self):
if self.connection.mysql_is_mariadb:
return True
return self.connection.mysql_version >= (8, 0, 16)
supports_table_check_constraints = property(operator.attrgetter('supports_column_check_constraints'))
@cached_property
def can_introspect_check_constraints(self):
if self.connection.mysql_is_mariadb:
version = self.connection.mysql_version
return version >= (10, 3, 10)
return self.connection.mysql_version >= (8, 0, 16)
@cached_property
def has_select_for_update_skip_locked(self):
if self.connection.mysql_is_mariadb:
return self.connection.mysql_version >= (10, 6)
return self.connection.mysql_version >= (8, 0, 1)
@cached_property
def has_select_for_update_nowait(self):
if self.connection.mysql_is_mariadb:
return True
return self.connection.mysql_version >= (8, 0, 1)
@cached_property
def has_select_for_update_of(self):
return not self.connection.mysql_is_mariadb and self.connection.mysql_version >= (8, 0, 1)
@cached_property
def supports_explain_analyze(self):
return self.connection.mysql_is_mariadb or self.connection.mysql_version >= (8, 0, 18)
@cached_property
def supported_explain_formats(self):
# Alias MySQL's TRADITIONAL to TEXT for consistency with other
# backends.
formats = {'JSON', 'TEXT', 'TRADITIONAL'}
if not self.connection.mysql_is_mariadb and self.connection.mysql_version >= (8, 0, 16):
formats.add('TREE')
return formats
@cached_property
def supports_transactions(self):
"""
All storage engines except MyISAM support transactions.
"""
return self._mysql_storage_engine != 'MyISAM'
@cached_property
def ignores_table_name_case(self):
return self.connection.mysql_server_data['lower_case_table_names']
@cached_property
def supports_default_in_lead_lag(self):
# To be added in https://jira.mariadb.org/browse/MDEV-12981.
return not self.connection.mysql_is_mariadb
@cached_property
def supports_json_field(self):
if self.connection.mysql_is_mariadb:
return True
return self.connection.mysql_version >= (5, 7, 8)
@cached_property
def can_introspect_json_field(self):
if self.connection.mysql_is_mariadb:
return self.supports_json_field and self.can_introspect_check_constraints
return self.supports_json_field
@cached_property
def supports_index_column_ordering(self):
return (
not self.connection.mysql_is_mariadb and
self.connection.mysql_version >= (8, 0, 1)
)
@cached_property
def supports_expression_indexes(self):
return (
not self.connection.mysql_is_mariadb and
self.connection.mysql_version >= (8, 0, 13)
)
|
012e8260fc794ca5f01d0d4d5298799a59d792a131ebee62afc0209f1edfd7a6 | import uuid
from django.conf import settings
from django.db.backends.base.operations import BaseDatabaseOperations
from django.db.backends.utils import split_tzname_delta
from django.db.models import Exists, ExpressionWrapper, Lookup
from django.utils import timezone
from django.utils.encoding import force_str
class DatabaseOperations(BaseDatabaseOperations):
compiler_module = "django.db.backends.mysql.compiler"
# MySQL stores positive fields as UNSIGNED ints.
integer_field_ranges = {
**BaseDatabaseOperations.integer_field_ranges,
'PositiveSmallIntegerField': (0, 65535),
'PositiveIntegerField': (0, 4294967295),
'PositiveBigIntegerField': (0, 18446744073709551615),
}
cast_data_types = {
'AutoField': 'signed integer',
'BigAutoField': 'signed integer',
'SmallAutoField': 'signed integer',
'CharField': 'char(%(max_length)s)',
'DecimalField': 'decimal(%(max_digits)s, %(decimal_places)s)',
'TextField': 'char',
'IntegerField': 'signed integer',
'BigIntegerField': 'signed integer',
'SmallIntegerField': 'signed integer',
'PositiveBigIntegerField': 'unsigned integer',
'PositiveIntegerField': 'unsigned integer',
'PositiveSmallIntegerField': 'unsigned integer',
'DurationField': 'signed integer',
}
cast_char_field_without_max_length = 'char'
explain_prefix = 'EXPLAIN'
def date_extract_sql(self, lookup_type, field_name):
# https://dev.mysql.com/doc/mysql/en/date-and-time-functions.html
if lookup_type == 'week_day':
# DAYOFWEEK() returns an integer, 1-7, Sunday=1.
return "DAYOFWEEK(%s)" % field_name
elif lookup_type == 'iso_week_day':
# WEEKDAY() returns an integer, 0-6, Monday=0.
return "WEEKDAY(%s) + 1" % field_name
elif lookup_type == 'week':
# Override the value of default_week_format for consistency with
# other database backends.
# Mode 3: Monday, 1-53, with 4 or more days this year.
return "WEEK(%s, 3)" % field_name
elif lookup_type == 'iso_year':
# Get the year part from the YEARWEEK function, which returns a
# number as year * 100 + week.
return "TRUNCATE(YEARWEEK(%s, 3), -2) / 100" % field_name
else:
# EXTRACT returns 1-53 based on ISO-8601 for the week number.
return "EXTRACT(%s FROM %s)" % (lookup_type.upper(), field_name)
def date_trunc_sql(self, lookup_type, field_name, tzname=None):
field_name = self._convert_field_to_tz(field_name, tzname)
fields = {
'year': '%%Y-01-01',
'month': '%%Y-%%m-01',
} # Use double percents to escape.
if lookup_type in fields:
format_str = fields[lookup_type]
return "CAST(DATE_FORMAT(%s, '%s') AS DATE)" % (field_name, format_str)
elif lookup_type == 'quarter':
return "MAKEDATE(YEAR(%s), 1) + INTERVAL QUARTER(%s) QUARTER - INTERVAL 1 QUARTER" % (
field_name, field_name
)
elif lookup_type == 'week':
return "DATE_SUB(%s, INTERVAL WEEKDAY(%s) DAY)" % (
field_name, field_name
)
else:
return "DATE(%s)" % (field_name)
def _prepare_tzname_delta(self, tzname):
tzname, sign, offset = split_tzname_delta(tzname)
return f'{sign}{offset}' if offset else tzname
def _convert_field_to_tz(self, field_name, tzname):
if tzname and settings.USE_TZ and self.connection.timezone_name != tzname:
field_name = "CONVERT_TZ(%s, '%s', '%s')" % (
field_name,
self.connection.timezone_name,
self._prepare_tzname_delta(tzname),
)
return field_name
def datetime_cast_date_sql(self, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return "DATE(%s)" % field_name
def datetime_cast_time_sql(self, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return "TIME(%s)" % field_name
def datetime_extract_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return self.date_extract_sql(lookup_type, field_name)
def datetime_trunc_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
fields = ['year', 'month', 'day', 'hour', 'minute', 'second']
format = ('%%Y-', '%%m', '-%%d', ' %%H:', '%%i', ':%%s') # Use double percents to escape.
format_def = ('0000-', '01', '-01', ' 00:', '00', ':00')
if lookup_type == 'quarter':
return (
"CAST(DATE_FORMAT(MAKEDATE(YEAR({field_name}), 1) + "
"INTERVAL QUARTER({field_name}) QUARTER - " +
"INTERVAL 1 QUARTER, '%%Y-%%m-01 00:00:00') AS DATETIME)"
).format(field_name=field_name)
if lookup_type == 'week':
return (
"CAST(DATE_FORMAT(DATE_SUB({field_name}, "
"INTERVAL WEEKDAY({field_name}) DAY), "
"'%%Y-%%m-%%d 00:00:00') AS DATETIME)"
).format(field_name=field_name)
try:
i = fields.index(lookup_type) + 1
except ValueError:
sql = field_name
else:
format_str = ''.join(format[:i] + format_def[i:])
sql = "CAST(DATE_FORMAT(%s, '%s') AS DATETIME)" % (field_name, format_str)
return sql
def time_trunc_sql(self, lookup_type, field_name, tzname=None):
field_name = self._convert_field_to_tz(field_name, tzname)
fields = {
'hour': '%%H:00:00',
'minute': '%%H:%%i:00',
'second': '%%H:%%i:%%s',
} # Use double percents to escape.
if lookup_type in fields:
format_str = fields[lookup_type]
return "CAST(DATE_FORMAT(%s, '%s') AS TIME)" % (field_name, format_str)
else:
return "TIME(%s)" % (field_name)
def fetch_returned_insert_rows(self, cursor):
"""
Given a cursor object that has just performed an INSERT...RETURNING
statement into a table, return the tuple of returned data.
"""
return cursor.fetchall()
def format_for_duration_arithmetic(self, sql):
return 'INTERVAL %s MICROSECOND' % sql
def force_no_ordering(self):
"""
"ORDER BY NULL" prevents MySQL from implicitly ordering by grouped
columns. If no ordering would otherwise be applied, we don't want any
implicit sorting going on.
"""
return [(None, ("NULL", [], False))]
def adapt_decimalfield_value(self, value, max_digits=None, decimal_places=None):
return value
def last_executed_query(self, cursor, sql, params):
# With MySQLdb, cursor objects have an (undocumented) "_executed"
# attribute where the exact query sent to the database is saved.
# See MySQLdb/cursors.py in the source distribution.
# MySQLdb returns string, PyMySQL bytes.
return force_str(getattr(cursor, '_executed', None), errors='replace')
def no_limit_value(self):
# 2**64 - 1, as recommended by the MySQL documentation
return 18446744073709551615
def quote_name(self, name):
if name.startswith("`") and name.endswith("`"):
return name # Quoting once is enough.
return "`%s`" % name
def return_insert_columns(self, fields):
# MySQL and MariaDB < 10.5.0 don't support an INSERT...RETURNING
# statement.
if not fields:
return '', ()
columns = [
'%s.%s' % (
self.quote_name(field.model._meta.db_table),
self.quote_name(field.column),
) for field in fields
]
return 'RETURNING %s' % ', '.join(columns), ()
def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
if not tables:
return []
sql = ['SET FOREIGN_KEY_CHECKS = 0;']
if reset_sequences:
# It's faster to TRUNCATE tables that require a sequence reset
# since ALTER TABLE AUTO_INCREMENT is slower than TRUNCATE.
sql.extend(
'%s %s;' % (
style.SQL_KEYWORD('TRUNCATE'),
style.SQL_FIELD(self.quote_name(table_name)),
) for table_name in tables
)
else:
# Otherwise issue a simple DELETE since it's faster than TRUNCATE
# and preserves sequences.
sql.extend(
'%s %s %s;' % (
style.SQL_KEYWORD('DELETE'),
style.SQL_KEYWORD('FROM'),
style.SQL_FIELD(self.quote_name(table_name)),
) for table_name in tables
)
sql.append('SET FOREIGN_KEY_CHECKS = 1;')
return sql
def sequence_reset_by_name_sql(self, style, sequences):
return [
'%s %s %s %s = 1;' % (
style.SQL_KEYWORD('ALTER'),
style.SQL_KEYWORD('TABLE'),
style.SQL_FIELD(self.quote_name(sequence_info['table'])),
style.SQL_FIELD('AUTO_INCREMENT'),
) for sequence_info in sequences
]
def validate_autopk_value(self, value):
# Zero in AUTO_INCREMENT field does not work without the
# NO_AUTO_VALUE_ON_ZERO SQL mode.
if value == 0 and not self.connection.features.allows_auto_pk_0:
raise ValueError('The database backend does not accept 0 as a '
'value for AutoField.')
return value
def adapt_datetimefield_value(self, value):
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
# MySQL doesn't support tz-aware datetimes
if timezone.is_aware(value):
if settings.USE_TZ:
value = timezone.make_naive(value, self.connection.timezone)
else:
raise ValueError("MySQL backend does not support timezone-aware datetimes when USE_TZ is False.")
return str(value)
def adapt_timefield_value(self, value):
if value is None:
return None
# Expression values are adapted by the database.
if hasattr(value, 'resolve_expression'):
return value
# MySQL doesn't support tz-aware times
if timezone.is_aware(value):
raise ValueError("MySQL backend does not support timezone-aware times.")
return value.isoformat(timespec='microseconds')
def max_name_length(self):
return 64
def pk_default_value(self):
return 'NULL'
def bulk_insert_sql(self, fields, placeholder_rows):
placeholder_rows_sql = (", ".join(row) for row in placeholder_rows)
values_sql = ", ".join("(%s)" % sql for sql in placeholder_rows_sql)
return "VALUES " + values_sql
def combine_expression(self, connector, sub_expressions):
if connector == '^':
return 'POW(%s)' % ','.join(sub_expressions)
# Convert the result to a signed integer since MySQL's binary operators
# return an unsigned integer.
elif connector in ('&', '|', '<<', '#'):
connector = '^' if connector == '#' else connector
return 'CONVERT(%s, SIGNED)' % connector.join(sub_expressions)
elif connector == '>>':
lhs, rhs = sub_expressions
return 'FLOOR(%(lhs)s / POW(2, %(rhs)s))' % {'lhs': lhs, 'rhs': rhs}
return super().combine_expression(connector, sub_expressions)
def get_db_converters(self, expression):
converters = super().get_db_converters(expression)
internal_type = expression.output_field.get_internal_type()
if internal_type == 'BooleanField':
converters.append(self.convert_booleanfield_value)
elif internal_type == 'DateTimeField':
if settings.USE_TZ:
converters.append(self.convert_datetimefield_value)
elif internal_type == 'UUIDField':
converters.append(self.convert_uuidfield_value)
return converters
def convert_booleanfield_value(self, value, expression, connection):
if value in (0, 1):
value = bool(value)
return value
def convert_datetimefield_value(self, value, expression, connection):
if value is not None:
value = timezone.make_aware(value, self.connection.timezone)
return value
def convert_uuidfield_value(self, value, expression, connection):
if value is not None:
value = uuid.UUID(value)
return value
def binary_placeholder_sql(self, value):
return '_binary %s' if value is not None and not hasattr(value, 'as_sql') else '%s'
def subtract_temporals(self, internal_type, lhs, rhs):
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
if internal_type == 'TimeField':
if self.connection.mysql_is_mariadb:
# MariaDB includes the microsecond component in TIME_TO_SEC as
# a decimal. MySQL returns an integer without microseconds.
return 'CAST((TIME_TO_SEC(%(lhs)s) - TIME_TO_SEC(%(rhs)s)) * 1000000 AS SIGNED)' % {
'lhs': lhs_sql, 'rhs': rhs_sql
}, (*lhs_params, *rhs_params)
return (
"((TIME_TO_SEC(%(lhs)s) * 1000000 + MICROSECOND(%(lhs)s)) -"
" (TIME_TO_SEC(%(rhs)s) * 1000000 + MICROSECOND(%(rhs)s)))"
) % {'lhs': lhs_sql, 'rhs': rhs_sql}, tuple(lhs_params) * 2 + tuple(rhs_params) * 2
params = (*rhs_params, *lhs_params)
return "TIMESTAMPDIFF(MICROSECOND, %s, %s)" % (rhs_sql, lhs_sql), params
def explain_query_prefix(self, format=None, **options):
# Alias MySQL's TRADITIONAL to TEXT for consistency with other backends.
if format and format.upper() == 'TEXT':
format = 'TRADITIONAL'
elif not format and 'TREE' in self.connection.features.supported_explain_formats:
# Use TREE by default (if supported) as it's more informative.
format = 'TREE'
analyze = options.pop('analyze', False)
prefix = super().explain_query_prefix(format, **options)
if analyze and self.connection.features.supports_explain_analyze:
# MariaDB uses ANALYZE instead of EXPLAIN ANALYZE.
prefix = 'ANALYZE' if self.connection.mysql_is_mariadb else prefix + ' ANALYZE'
if format and not (analyze and not self.connection.mysql_is_mariadb):
# Only MariaDB supports the analyze option with formats.
prefix += ' FORMAT=%s' % format
return prefix
def regex_lookup(self, lookup_type):
# REGEXP BINARY doesn't work correctly in MySQL 8+ and REGEXP_LIKE
# doesn't exist in MySQL 5.x or in MariaDB.
if self.connection.mysql_version < (8, 0, 0) or self.connection.mysql_is_mariadb:
if lookup_type == 'regex':
return '%s REGEXP BINARY %s'
return '%s REGEXP %s'
match_option = 'c' if lookup_type == 'regex' else 'i'
return "REGEXP_LIKE(%%s, %%s, '%s')" % match_option
def insert_statement(self, ignore_conflicts=False):
return 'INSERT IGNORE INTO' if ignore_conflicts else super().insert_statement(ignore_conflicts)
def lookup_cast(self, lookup_type, internal_type=None):
lookup = '%s'
if internal_type == 'JSONField':
if self.connection.mysql_is_mariadb or lookup_type in (
'iexact', 'contains', 'icontains', 'startswith', 'istartswith',
'endswith', 'iendswith', 'regex', 'iregex',
):
lookup = 'JSON_UNQUOTE(%s)'
return lookup
def conditional_expression_supported_in_where_clause(self, expression):
# MySQL ignores indexes with boolean fields unless they're compared
# directly to a boolean value.
if isinstance(expression, (Exists, Lookup)):
return True
if isinstance(expression, ExpressionWrapper) and expression.conditional:
return self.conditional_expression_supported_in_where_clause(expression.expression)
if getattr(expression, 'conditional', False):
return False
return super().conditional_expression_supported_in_where_clause(expression)
|
266760faf3efca938245a89c97266cfa63f73b551279bc592172eb7bd046defb | import operator
from django.db import InterfaceError
from django.db.backends.base.features import BaseDatabaseFeatures
from django.utils.functional import cached_property
class DatabaseFeatures(BaseDatabaseFeatures):
allows_group_by_selected_pks = True
can_return_columns_from_insert = True
can_return_rows_from_bulk_insert = True
has_real_datatype = True
has_native_uuid_field = True
has_native_duration_field = True
has_native_json_field = True
can_defer_constraint_checks = True
has_select_for_update = True
has_select_for_update_nowait = True
has_select_for_update_of = True
has_select_for_update_skip_locked = True
has_select_for_no_key_update = True
can_release_savepoints = True
supports_tablespaces = True
supports_transactions = True
can_introspect_materialized_views = True
can_distinct_on_fields = True
can_rollback_ddl = True
supports_combined_alters = True
nulls_order_largest = True
closed_cursor_error_class = InterfaceError
greatest_least_ignores_nulls = True
can_clone_databases = True
supports_temporal_subtraction = True
supports_slicing_ordering_in_compound = True
create_test_procedure_without_params_sql = """
CREATE FUNCTION test_procedure () RETURNS void AS $$
DECLARE
V_I INTEGER;
BEGIN
V_I := 1;
END;
$$ LANGUAGE plpgsql;"""
create_test_procedure_with_int_param_sql = """
CREATE FUNCTION test_procedure (P_I INTEGER) RETURNS void AS $$
DECLARE
V_I INTEGER;
BEGIN
V_I := P_I;
END;
$$ LANGUAGE plpgsql;"""
requires_casted_case_in_updates = True
supports_over_clause = True
only_supports_unbounded_with_preceding_and_following = True
supports_aggregate_filter_clause = True
supported_explain_formats = {'JSON', 'TEXT', 'XML', 'YAML'}
validates_explain_options = False # A query will error on invalid options.
supports_deferrable_unique_constraints = True
has_json_operators = True
json_key_contains_list_matching_requires_list = True
test_collations = {
'non_default': 'sv-x-icu',
'swedish_ci': 'sv-x-icu',
}
test_now_utc_template = "STATEMENT_TIMESTAMP() AT TIME ZONE 'UTC'"
django_test_skips = {
'opclasses are PostgreSQL only.': {
'indexes.tests.SchemaIndexesNotPostgreSQLTests.test_create_index_ignores_opclasses',
},
}
@cached_property
def introspected_field_types(self):
return {
**super().introspected_field_types,
'PositiveBigIntegerField': 'BigIntegerField',
'PositiveIntegerField': 'IntegerField',
'PositiveSmallIntegerField': 'SmallIntegerField',
}
@cached_property
def is_postgresql_11(self):
return self.connection.pg_version >= 110000
@cached_property
def is_postgresql_12(self):
return self.connection.pg_version >= 120000
@cached_property
def is_postgresql_13(self):
return self.connection.pg_version >= 130000
@cached_property
def is_postgresql_14(self):
return self.connection.pg_version >= 140000
has_bit_xor = property(operator.attrgetter('is_postgresql_14'))
has_websearch_to_tsquery = property(operator.attrgetter('is_postgresql_11'))
supports_covering_indexes = property(operator.attrgetter('is_postgresql_11'))
supports_covering_gist_indexes = property(operator.attrgetter('is_postgresql_12'))
supports_covering_spgist_indexes = property(operator.attrgetter('is_postgresql_14'))
supports_non_deterministic_collations = property(operator.attrgetter('is_postgresql_12'))
|
00d332d406a507cec2f2907f545ece97467132787156693d63a86a76af4968ed | from psycopg2.extras import Inet
from django.conf import settings
from django.db.backends.base.operations import BaseDatabaseOperations
from django.db.backends.utils import split_tzname_delta
class DatabaseOperations(BaseDatabaseOperations):
cast_char_field_without_max_length = 'varchar'
explain_prefix = 'EXPLAIN'
cast_data_types = {
'AutoField': 'integer',
'BigAutoField': 'bigint',
'SmallAutoField': 'smallint',
}
def unification_cast_sql(self, output_field):
internal_type = output_field.get_internal_type()
if internal_type in ("GenericIPAddressField", "IPAddressField", "TimeField", "UUIDField"):
# PostgreSQL will resolve a union as type 'text' if input types are
# 'unknown'.
# https://www.postgresql.org/docs/current/typeconv-union-case.html
# These fields cannot be implicitly cast back in the default
# PostgreSQL configuration so we need to explicitly cast them.
# We must also remove components of the type within brackets:
# varchar(255) -> varchar.
return 'CAST(%%s AS %s)' % output_field.db_type(self.connection).split('(')[0]
return '%s'
def date_extract_sql(self, lookup_type, field_name):
# https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT
if lookup_type == 'week_day':
# For consistency across backends, we return Sunday=1, Saturday=7.
return "EXTRACT('dow' FROM %s) + 1" % field_name
elif lookup_type == 'iso_week_day':
return "EXTRACT('isodow' FROM %s)" % field_name
elif lookup_type == 'iso_year':
return "EXTRACT('isoyear' FROM %s)" % field_name
else:
return "EXTRACT('%s' FROM %s)" % (lookup_type, field_name)
def date_trunc_sql(self, lookup_type, field_name, tzname=None):
field_name = self._convert_field_to_tz(field_name, tzname)
# https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
return "DATE_TRUNC('%s', %s)" % (lookup_type, field_name)
def _prepare_tzname_delta(self, tzname):
tzname, sign, offset = split_tzname_delta(tzname)
if offset:
sign = '-' if sign == '+' else '+'
return f'{tzname}{sign}{offset}'
return tzname
def _convert_field_to_tz(self, field_name, tzname):
if tzname and settings.USE_TZ:
field_name = "%s AT TIME ZONE '%s'" % (field_name, self._prepare_tzname_delta(tzname))
return field_name
def datetime_cast_date_sql(self, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return '(%s)::date' % field_name
def datetime_cast_time_sql(self, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return '(%s)::time' % field_name
def datetime_extract_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
return self.date_extract_sql(lookup_type, field_name)
def datetime_trunc_sql(self, lookup_type, field_name, tzname):
field_name = self._convert_field_to_tz(field_name, tzname)
# https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
return "DATE_TRUNC('%s', %s)" % (lookup_type, field_name)
def time_trunc_sql(self, lookup_type, field_name, tzname=None):
field_name = self._convert_field_to_tz(field_name, tzname)
return "DATE_TRUNC('%s', %s)::time" % (lookup_type, field_name)
def deferrable_sql(self):
return " DEFERRABLE INITIALLY DEFERRED"
def fetch_returned_insert_rows(self, cursor):
"""
Given a cursor object that has just performed an INSERT...RETURNING
statement into a table, return the tuple of returned data.
"""
return cursor.fetchall()
def lookup_cast(self, lookup_type, internal_type=None):
lookup = '%s'
# Cast text lookups to text to allow things like filter(x__contains=4)
if lookup_type in ('iexact', 'contains', 'icontains', 'startswith',
'istartswith', 'endswith', 'iendswith', 'regex', 'iregex'):
if internal_type in ('IPAddressField', 'GenericIPAddressField'):
lookup = "HOST(%s)"
elif internal_type in ('CICharField', 'CIEmailField', 'CITextField'):
lookup = '%s::citext'
else:
lookup = "%s::text"
# Use UPPER(x) for case-insensitive lookups; it's faster.
if lookup_type in ('iexact', 'icontains', 'istartswith', 'iendswith'):
lookup = 'UPPER(%s)' % lookup
return lookup
def no_limit_value(self):
return None
def prepare_sql_script(self, sql):
return [sql]
def quote_name(self, name):
if name.startswith('"') and name.endswith('"'):
return name # Quoting once is enough.
return '"%s"' % name
def set_time_zone_sql(self):
return "SET TIME ZONE %s"
def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
if not tables:
return []
# Perform a single SQL 'TRUNCATE x, y, z...;' statement. It allows us
# to truncate tables referenced by a foreign key in any other table.
sql_parts = [
style.SQL_KEYWORD('TRUNCATE'),
', '.join(style.SQL_FIELD(self.quote_name(table)) for table in tables),
]
if reset_sequences:
sql_parts.append(style.SQL_KEYWORD('RESTART IDENTITY'))
if allow_cascade:
sql_parts.append(style.SQL_KEYWORD('CASCADE'))
return ['%s;' % ' '.join(sql_parts)]
def sequence_reset_by_name_sql(self, style, sequences):
# 'ALTER SEQUENCE sequence_name RESTART WITH 1;'... style SQL statements
# to reset sequence indices
sql = []
for sequence_info in sequences:
table_name = sequence_info['table']
# 'id' will be the case if it's an m2m using an autogenerated
# intermediate table (see BaseDatabaseIntrospection.sequence_list).
column_name = sequence_info['column'] or 'id'
sql.append("%s setval(pg_get_serial_sequence('%s','%s'), 1, false);" % (
style.SQL_KEYWORD('SELECT'),
style.SQL_TABLE(self.quote_name(table_name)),
style.SQL_FIELD(column_name),
))
return sql
def tablespace_sql(self, tablespace, inline=False):
if inline:
return "USING INDEX TABLESPACE %s" % self.quote_name(tablespace)
else:
return "TABLESPACE %s" % self.quote_name(tablespace)
def sequence_reset_sql(self, style, model_list):
from django.db import models
output = []
qn = self.quote_name
for model in model_list:
# Use `coalesce` to set the sequence for each model to the max pk value if there are records,
# or 1 if there are none. Set the `is_called` property (the third argument to `setval`) to true
# if there are records (as the max pk value is already in use), otherwise set it to false.
# Use pg_get_serial_sequence to get the underlying sequence name from the table name
# and column name (available since PostgreSQL 8)
for f in model._meta.local_fields:
if isinstance(f, models.AutoField):
output.append(
"%s setval(pg_get_serial_sequence('%s','%s'), "
"coalesce(max(%s), 1), max(%s) %s null) %s %s;" % (
style.SQL_KEYWORD('SELECT'),
style.SQL_TABLE(qn(model._meta.db_table)),
style.SQL_FIELD(f.column),
style.SQL_FIELD(qn(f.column)),
style.SQL_FIELD(qn(f.column)),
style.SQL_KEYWORD('IS NOT'),
style.SQL_KEYWORD('FROM'),
style.SQL_TABLE(qn(model._meta.db_table)),
)
)
break # Only one AutoField is allowed per model, so don't bother continuing.
return output
def prep_for_iexact_query(self, x):
return x
def max_name_length(self):
"""
Return the maximum length of an identifier.
The maximum length of an identifier is 63 by default, but can be
changed by recompiling PostgreSQL after editing the NAMEDATALEN
macro in src/include/pg_config_manual.h.
This implementation returns 63, but can be overridden by a custom
database backend that inherits most of its behavior from this one.
"""
return 63
def distinct_sql(self, fields, params):
if fields:
params = [param for param_list in params for param in param_list]
return (['DISTINCT ON (%s)' % ', '.join(fields)], params)
else:
return ['DISTINCT'], []
def last_executed_query(self, cursor, sql, params):
# https://www.psycopg.org/docs/cursor.html#cursor.query
# The query attribute is a Psycopg extension to the DB API 2.0.
if cursor.query is not None:
return cursor.query.decode()
return None
def return_insert_columns(self, fields):
if not fields:
return '', ()
columns = [
'%s.%s' % (
self.quote_name(field.model._meta.db_table),
self.quote_name(field.column),
) for field in fields
]
return 'RETURNING %s' % ', '.join(columns), ()
def bulk_insert_sql(self, fields, placeholder_rows):
placeholder_rows_sql = (", ".join(row) for row in placeholder_rows)
values_sql = ", ".join("(%s)" % sql for sql in placeholder_rows_sql)
return "VALUES " + values_sql
def adapt_datefield_value(self, value):
return value
def adapt_datetimefield_value(self, value):
return value
def adapt_timefield_value(self, value):
return value
def adapt_decimalfield_value(self, value, max_digits=None, decimal_places=None):
return value
def adapt_ipaddressfield_value(self, value):
if value:
return Inet(value)
return None
def subtract_temporals(self, internal_type, lhs, rhs):
if internal_type == 'DateField':
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
params = (*lhs_params, *rhs_params)
return "(interval '1 day' * (%s - %s))" % (lhs_sql, rhs_sql), params
return super().subtract_temporals(internal_type, lhs, rhs)
def explain_query_prefix(self, format=None, **options):
prefix = super().explain_query_prefix(format)
extra = {}
if format:
extra['FORMAT'] = format
if options:
extra.update({
name.upper(): 'true' if value else 'false'
for name, value in options.items()
})
if extra:
prefix += ' (%s)' % ', '.join('%s %s' % i for i in extra.items())
return prefix
def ignore_conflicts_suffix_sql(self, ignore_conflicts=None):
return 'ON CONFLICT DO NOTHING' if ignore_conflicts else super().ignore_conflicts_suffix_sql(ignore_conflicts)
|
ac0bcbd6aa1275b80562e9add04f75b625ce6c73f813d8d95f3d463082dd281a | import operator
from django.db import transaction
from django.db.backends.base.features import BaseDatabaseFeatures
from django.db.utils import OperationalError
from django.utils.functional import cached_property
from .base import Database
class DatabaseFeatures(BaseDatabaseFeatures):
test_db_allows_multiple_connections = False
supports_unspecified_pk = True
supports_timezones = False
max_query_params = 999
supports_transactions = True
atomic_transactions = False
can_rollback_ddl = True
can_create_inline_fk = False
supports_paramstyle_pyformat = False
requires_literal_defaults = True
can_clone_databases = True
supports_temporal_subtraction = True
ignores_table_name_case = True
supports_cast_with_precision = False
time_cast_precision = 3
can_release_savepoints = True
has_case_insensitive_like = True
# Is "ALTER TABLE ... RENAME COLUMN" supported?
can_alter_table_rename_column = Database.sqlite_version_info >= (3, 25, 0)
supports_parentheses_in_compound = False
# Deferred constraint checks can be emulated on SQLite < 3.20 but not in a
# reasonably performant way.
supports_pragma_foreign_key_check = Database.sqlite_version_info >= (3, 20, 0)
can_defer_constraint_checks = supports_pragma_foreign_key_check
supports_functions_in_partial_indexes = Database.sqlite_version_info >= (3, 15, 0)
supports_over_clause = Database.sqlite_version_info >= (3, 25, 0)
supports_frame_range_fixed_distance = Database.sqlite_version_info >= (3, 28, 0)
supports_aggregate_filter_clause = Database.sqlite_version_info >= (3, 30, 1)
supports_order_by_nulls_modifier = Database.sqlite_version_info >= (3, 30, 0)
order_by_nulls_first = True
supports_json_field_contains = False
test_collations = {
'ci': 'nocase',
'cs': 'binary',
'non_default': 'nocase',
}
django_test_expected_failures = {
# The django_format_dtdelta() function doesn't properly handle mixed
# Date/DateTime fields and timedeltas.
'expressions.tests.FTimeDeltaTests.test_mixed_comparisons1',
}
@cached_property
def django_test_skips(self):
skips = {
'SQLite stores values rounded to 15 significant digits.': {
'model_fields.test_decimalfield.DecimalFieldTests.test_fetch_from_db_without_float_rounding',
},
'SQLite naively remakes the table on field alteration.': {
'schema.tests.SchemaTests.test_unique_no_unnecessary_fk_drops',
'schema.tests.SchemaTests.test_unique_and_reverse_m2m',
'schema.tests.SchemaTests.test_alter_field_default_doesnt_perform_queries',
'schema.tests.SchemaTests.test_rename_column_renames_deferred_sql_references',
},
"SQLite doesn't have a constraint.": {
'model_fields.test_integerfield.PositiveIntegerFieldTests.test_negative_values',
},
"SQLite doesn't support negative precision for ROUND().": {
'db_functions.math.test_round.RoundTests.test_null_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_decimal_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_float_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_integer_with_negative_precision',
},
}
if Database.sqlite_version_info < (3, 27):
skips.update({
'Nondeterministic failure on SQLite < 3.27.': {
'expressions_window.tests.WindowFunctionTests.test_subquery_row_range_rank',
},
})
if self.connection.is_in_memory_db():
skips.update({
"the sqlite backend's close() method is a no-op when using an "
"in-memory database": {
'servers.test_liveserverthread.LiveServerThreadTest.test_closes_connections',
'servers.tests.LiveServerTestCloseConnectionTest.test_closes_connections',
},
})
return skips
@cached_property
def supports_atomic_references_rename(self):
return Database.sqlite_version_info >= (3, 26, 0)
@cached_property
def introspected_field_types(self):
return{
**super().introspected_field_types,
'BigAutoField': 'AutoField',
'DurationField': 'BigIntegerField',
'GenericIPAddressField': 'CharField',
'SmallAutoField': 'AutoField',
}
@cached_property
def supports_json_field(self):
with self.connection.cursor() as cursor:
try:
with transaction.atomic(self.connection.alias):
cursor.execute('SELECT JSON(\'{"a": "b"}\')')
except OperationalError:
return False
return True
can_introspect_json_field = property(operator.attrgetter('supports_json_field'))
has_json_object_function = property(operator.attrgetter('supports_json_field'))
@cached_property
def can_return_columns_from_insert(self):
return Database.sqlite_version_info >= (3, 35)
can_return_rows_from_bulk_insert = property(operator.attrgetter('can_return_columns_from_insert'))
|
1be87d120390c60216ef433ade06ff0e653964db7459c7c33fdf5faba2cee83a | """
SQLite backend for the sqlite3 module in the standard library.
"""
import datetime
import decimal
import functools
import hashlib
import math
import operator
import random
import re
import statistics
import warnings
from itertools import chain
from sqlite3 import dbapi2 as Database
from django.core.exceptions import ImproperlyConfigured
from django.db import IntegrityError
from django.db.backends import utils as backend_utils
from django.db.backends.base.base import (
BaseDatabaseWrapper, timezone_constructor,
)
from django.utils import timezone
from django.utils.asyncio import async_unsafe
from django.utils.crypto import md5
from django.utils.dateparse import parse_datetime, parse_time
from django.utils.duration import duration_microseconds
from django.utils.regex_helper import _lazy_re_compile
from .client import DatabaseClient
from .creation import DatabaseCreation
from .features import DatabaseFeatures
from .introspection import DatabaseIntrospection
from .operations import DatabaseOperations
from .schema import DatabaseSchemaEditor
def decoder(conv_func):
"""
Convert bytestrings from Python's sqlite3 interface to a regular string.
"""
return lambda s: conv_func(s.decode())
def none_guard(func):
"""
Decorator that returns None if any of the arguments to the decorated
function are None. Many SQL functions return NULL if any of their arguments
are NULL. This decorator simplifies the implementation of this for the
custom functions registered below.
"""
@functools.wraps(func)
def wrapper(*args, **kwargs):
return None if None in args else func(*args, **kwargs)
return wrapper
def list_aggregate(function):
"""
Return an aggregate class that accumulates values in a list and applies
the provided function to the data.
"""
return type('ListAggregate', (list,), {'finalize': function, 'step': list.append})
def check_sqlite_version():
if Database.sqlite_version_info < (3, 9, 0):
raise ImproperlyConfigured(
'SQLite 3.9.0 or later is required (found %s).' % Database.sqlite_version
)
check_sqlite_version()
Database.register_converter("bool", b'1'.__eq__)
Database.register_converter("time", decoder(parse_time))
Database.register_converter("datetime", decoder(parse_datetime))
Database.register_converter("timestamp", decoder(parse_datetime))
Database.register_adapter(decimal.Decimal, str)
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'sqlite'
display_name = 'SQLite'
# SQLite doesn't actually support most of these types, but it "does the right
# thing" given more verbose field definitions, so leave them as is so that
# schema inspection is more useful.
data_types = {
'AutoField': 'integer',
'BigAutoField': 'integer',
'BinaryField': 'BLOB',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'decimal',
'DurationField': 'bigint',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'real',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'JSONField': 'text',
'OneToOneField': 'integer',
'PositiveBigIntegerField': 'bigint unsigned',
'PositiveIntegerField': 'integer unsigned',
'PositiveSmallIntegerField': 'smallint unsigned',
'SlugField': 'varchar(%(max_length)s)',
'SmallAutoField': 'integer',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
'UUIDField': 'char(32)',
}
data_type_check_constraints = {
'PositiveBigIntegerField': '"%(column)s" >= 0',
'JSONField': '(JSON_VALID("%(column)s") OR "%(column)s" IS NULL)',
'PositiveIntegerField': '"%(column)s" >= 0',
'PositiveSmallIntegerField': '"%(column)s" >= 0',
}
data_types_suffix = {
'AutoField': 'AUTOINCREMENT',
'BigAutoField': 'AUTOINCREMENT',
'SmallAutoField': 'AUTOINCREMENT',
}
# SQLite requires LIKE statements to include an ESCAPE clause if the value
# being escaped has a percent or underscore in it.
# See https://www.sqlite.org/lang_expr.html for an explanation.
operators = {
'exact': '= %s',
'iexact': "LIKE %s ESCAPE '\\'",
'contains': "LIKE %s ESCAPE '\\'",
'icontains': "LIKE %s ESCAPE '\\'",
'regex': 'REGEXP %s',
'iregex': "REGEXP '(?i)' || %s",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': "LIKE %s ESCAPE '\\'",
'endswith': "LIKE %s ESCAPE '\\'",
'istartswith': "LIKE %s ESCAPE '\\'",
'iendswith': "LIKE %s ESCAPE '\\'",
}
# The patterns below are used to generate SQL pattern lookup clauses when
# the right-hand side of the lookup isn't a raw string (it might be an expression
# or the result of a bilateral transformation).
# In those cases, special characters for LIKE operators (e.g. \, *, _) should be
# escaped on database side.
#
# Note: we use str.format() here for readability as '%' is used as a wildcard for
# the LIKE operator.
pattern_esc = r"REPLACE(REPLACE(REPLACE({}, '\', '\\'), '%%', '\%%'), '_', '\_')"
pattern_ops = {
'contains': r"LIKE '%%' || {} || '%%' ESCAPE '\'",
'icontains': r"LIKE '%%' || UPPER({}) || '%%' ESCAPE '\'",
'startswith': r"LIKE {} || '%%' ESCAPE '\'",
'istartswith': r"LIKE UPPER({}) || '%%' ESCAPE '\'",
'endswith': r"LIKE '%%' || {} ESCAPE '\'",
'iendswith': r"LIKE '%%' || UPPER({}) ESCAPE '\'",
}
Database = Database
SchemaEditorClass = DatabaseSchemaEditor
# Classes instantiated in __init__().
client_class = DatabaseClient
creation_class = DatabaseCreation
features_class = DatabaseFeatures
introspection_class = DatabaseIntrospection
ops_class = DatabaseOperations
def get_connection_params(self):
settings_dict = self.settings_dict
if not settings_dict['NAME']:
raise ImproperlyConfigured(
"settings.DATABASES is improperly configured. "
"Please supply the NAME value.")
kwargs = {
'database': settings_dict['NAME'],
'detect_types': Database.PARSE_DECLTYPES | Database.PARSE_COLNAMES,
**settings_dict['OPTIONS'],
}
# Always allow the underlying SQLite connection to be shareable
# between multiple threads. The safe-guarding will be handled at a
# higher level by the `BaseDatabaseWrapper.allow_thread_sharing`
# property. This is necessary as the shareability is disabled by
# default in pysqlite and it cannot be changed once a connection is
# opened.
if 'check_same_thread' in kwargs and kwargs['check_same_thread']:
warnings.warn(
'The `check_same_thread` option was provided and set to '
'True. It will be overridden with False. Use the '
'`DatabaseWrapper.allow_thread_sharing` property instead '
'for controlling thread shareability.',
RuntimeWarning
)
kwargs.update({'check_same_thread': False, 'uri': True})
return kwargs
@async_unsafe
def get_new_connection(self, conn_params):
conn = Database.connect(**conn_params)
create_deterministic_function = functools.partial(
conn.create_function,
deterministic=True,
)
create_deterministic_function('django_date_extract', 2, _sqlite_datetime_extract)
create_deterministic_function('django_date_trunc', 4, _sqlite_date_trunc)
create_deterministic_function('django_datetime_cast_date', 3, _sqlite_datetime_cast_date)
create_deterministic_function('django_datetime_cast_time', 3, _sqlite_datetime_cast_time)
create_deterministic_function('django_datetime_extract', 4, _sqlite_datetime_extract)
create_deterministic_function('django_datetime_trunc', 4, _sqlite_datetime_trunc)
create_deterministic_function('django_time_extract', 2, _sqlite_time_extract)
create_deterministic_function('django_time_trunc', 4, _sqlite_time_trunc)
create_deterministic_function('django_time_diff', 2, _sqlite_time_diff)
create_deterministic_function('django_timestamp_diff', 2, _sqlite_timestamp_diff)
create_deterministic_function('django_format_dtdelta', 3, _sqlite_format_dtdelta)
create_deterministic_function('regexp', 2, _sqlite_regexp)
create_deterministic_function('ACOS', 1, none_guard(math.acos))
create_deterministic_function('ASIN', 1, none_guard(math.asin))
create_deterministic_function('ATAN', 1, none_guard(math.atan))
create_deterministic_function('ATAN2', 2, none_guard(math.atan2))
create_deterministic_function('BITXOR', 2, none_guard(operator.xor))
create_deterministic_function('CEILING', 1, none_guard(math.ceil))
create_deterministic_function('COS', 1, none_guard(math.cos))
create_deterministic_function('COT', 1, none_guard(lambda x: 1 / math.tan(x)))
create_deterministic_function('DEGREES', 1, none_guard(math.degrees))
create_deterministic_function('EXP', 1, none_guard(math.exp))
create_deterministic_function('FLOOR', 1, none_guard(math.floor))
create_deterministic_function('LN', 1, none_guard(math.log))
create_deterministic_function('LOG', 2, none_guard(lambda x, y: math.log(y, x)))
create_deterministic_function('LPAD', 3, _sqlite_lpad)
create_deterministic_function('MD5', 1, none_guard(lambda x: md5(x.encode()).hexdigest()))
create_deterministic_function('MOD', 2, none_guard(math.fmod))
create_deterministic_function('PI', 0, lambda: math.pi)
create_deterministic_function('POWER', 2, none_guard(operator.pow))
create_deterministic_function('RADIANS', 1, none_guard(math.radians))
create_deterministic_function('REPEAT', 2, none_guard(operator.mul))
create_deterministic_function('REVERSE', 1, none_guard(lambda x: x[::-1]))
create_deterministic_function('RPAD', 3, _sqlite_rpad)
create_deterministic_function('SHA1', 1, none_guard(lambda x: hashlib.sha1(x.encode()).hexdigest()))
create_deterministic_function('SHA224', 1, none_guard(lambda x: hashlib.sha224(x.encode()).hexdigest()))
create_deterministic_function('SHA256', 1, none_guard(lambda x: hashlib.sha256(x.encode()).hexdigest()))
create_deterministic_function('SHA384', 1, none_guard(lambda x: hashlib.sha384(x.encode()).hexdigest()))
create_deterministic_function('SHA512', 1, none_guard(lambda x: hashlib.sha512(x.encode()).hexdigest()))
create_deterministic_function('SIGN', 1, none_guard(lambda x: (x > 0) - (x < 0)))
create_deterministic_function('SIN', 1, none_guard(math.sin))
create_deterministic_function('SQRT', 1, none_guard(math.sqrt))
create_deterministic_function('TAN', 1, none_guard(math.tan))
# Don't use the built-in RANDOM() function because it returns a value
# in the range [-1 * 2^63, 2^63 - 1] instead of [0, 1).
conn.create_function('RAND', 0, random.random)
conn.create_aggregate('STDDEV_POP', 1, list_aggregate(statistics.pstdev))
conn.create_aggregate('STDDEV_SAMP', 1, list_aggregate(statistics.stdev))
conn.create_aggregate('VAR_POP', 1, list_aggregate(statistics.pvariance))
conn.create_aggregate('VAR_SAMP', 1, list_aggregate(statistics.variance))
conn.execute('PRAGMA foreign_keys = ON')
# The macOS bundled SQLite defaults legacy_alter_table ON, which
# prevents atomic table renames (feature supports_atomic_references_rename)
conn.execute('PRAGMA legacy_alter_table = OFF')
return conn
def init_connection_state(self):
pass
def create_cursor(self, name=None):
return self.connection.cursor(factory=SQLiteCursorWrapper)
@async_unsafe
def close(self):
self.validate_thread_sharing()
# If database is in memory, closing the connection destroys the
# database. To prevent accidental data loss, ignore close requests on
# an in-memory db.
if not self.is_in_memory_db():
BaseDatabaseWrapper.close(self)
def _savepoint_allowed(self):
# When 'isolation_level' is not None, sqlite3 commits before each
# savepoint; it's a bug. When it is None, savepoints don't make sense
# because autocommit is enabled. The only exception is inside 'atomic'
# blocks. To work around that bug, on SQLite, 'atomic' starts a
# transaction explicitly rather than simply disable autocommit.
return self.in_atomic_block
def _set_autocommit(self, autocommit):
if autocommit:
level = None
else:
# sqlite3's internal default is ''. It's different from None.
# See Modules/_sqlite/connection.c.
level = ''
# 'isolation_level' is a misleading API.
# SQLite always runs at the SERIALIZABLE isolation level.
with self.wrap_database_errors:
self.connection.isolation_level = level
def disable_constraint_checking(self):
with self.cursor() as cursor:
cursor.execute('PRAGMA foreign_keys = OFF')
# Foreign key constraints cannot be turned off while in a multi-
# statement transaction. Fetch the current state of the pragma
# to determine if constraints are effectively disabled.
enabled = cursor.execute('PRAGMA foreign_keys').fetchone()[0]
return not bool(enabled)
def enable_constraint_checking(self):
with self.cursor() as cursor:
cursor.execute('PRAGMA foreign_keys = ON')
def check_constraints(self, table_names=None):
"""
Check each table name in `table_names` for rows with invalid foreign
key references. This method is intended to be used in conjunction with
`disable_constraint_checking()` and `enable_constraint_checking()`, to
determine if rows with invalid references were entered while constraint
checks were off.
"""
if self.features.supports_pragma_foreign_key_check:
with self.cursor() as cursor:
if table_names is None:
violations = cursor.execute('PRAGMA foreign_key_check').fetchall()
else:
violations = chain.from_iterable(
cursor.execute(
'PRAGMA foreign_key_check(%s)'
% self.ops.quote_name(table_name)
).fetchall()
for table_name in table_names
)
# See https://www.sqlite.org/pragma.html#pragma_foreign_key_check
for table_name, rowid, referenced_table_name, foreign_key_index in violations:
foreign_key = cursor.execute(
'PRAGMA foreign_key_list(%s)' % self.ops.quote_name(table_name)
).fetchall()[foreign_key_index]
column_name, referenced_column_name = foreign_key[3:5]
primary_key_column_name = self.introspection.get_primary_key_column(cursor, table_name)
primary_key_value, bad_value = cursor.execute(
'SELECT %s, %s FROM %s WHERE rowid = %%s' % (
self.ops.quote_name(primary_key_column_name),
self.ops.quote_name(column_name),
self.ops.quote_name(table_name),
),
(rowid,),
).fetchone()
raise IntegrityError(
"The row in table '%s' with primary key '%s' has an "
"invalid foreign key: %s.%s contains a value '%s' that "
"does not have a corresponding value in %s.%s." % (
table_name, primary_key_value, table_name, column_name,
bad_value, referenced_table_name, referenced_column_name
)
)
else:
with self.cursor() as cursor:
if table_names is None:
table_names = self.introspection.table_names(cursor)
for table_name in table_names:
primary_key_column_name = self.introspection.get_primary_key_column(cursor, table_name)
if not primary_key_column_name:
continue
relations = self.introspection.get_relations(cursor, table_name)
for column_name, (referenced_column_name, referenced_table_name) in relations:
cursor.execute(
"""
SELECT REFERRING.`%s`, REFERRING.`%s` FROM `%s` as REFERRING
LEFT JOIN `%s` as REFERRED
ON (REFERRING.`%s` = REFERRED.`%s`)
WHERE REFERRING.`%s` IS NOT NULL AND REFERRED.`%s` IS NULL
"""
% (
primary_key_column_name, column_name, table_name,
referenced_table_name, column_name, referenced_column_name,
column_name, referenced_column_name,
)
)
for bad_row in cursor.fetchall():
raise IntegrityError(
"The row in table '%s' with primary key '%s' has an "
"invalid foreign key: %s.%s contains a value '%s' that "
"does not have a corresponding value in %s.%s." % (
table_name, bad_row[0], table_name, column_name,
bad_row[1], referenced_table_name, referenced_column_name,
)
)
def is_usable(self):
return True
def _start_transaction_under_autocommit(self):
"""
Start a transaction explicitly in autocommit mode.
Staying in autocommit mode works around a bug of sqlite3 that breaks
savepoints when autocommit is disabled.
"""
self.cursor().execute("BEGIN")
def is_in_memory_db(self):
return self.creation.is_in_memory_db(self.settings_dict['NAME'])
FORMAT_QMARK_REGEX = _lazy_re_compile(r'(?<!%)%s')
class SQLiteCursorWrapper(Database.Cursor):
"""
Django uses "format" style placeholders, but pysqlite2 uses "qmark" style.
This fixes it -- but note that if you want to use a literal "%s" in a query,
you'll need to use "%%s".
"""
def execute(self, query, params=None):
if params is None:
return Database.Cursor.execute(self, query)
query = self.convert_query(query)
return Database.Cursor.execute(self, query, params)
def executemany(self, query, param_list):
query = self.convert_query(query)
return Database.Cursor.executemany(self, query, param_list)
def convert_query(self, query):
return FORMAT_QMARK_REGEX.sub('?', query).replace('%%', '%')
def _sqlite_datetime_parse(dt, tzname=None, conn_tzname=None):
if dt is None:
return None
try:
dt = backend_utils.typecast_timestamp(dt)
except (TypeError, ValueError):
return None
if conn_tzname:
dt = dt.replace(tzinfo=timezone_constructor(conn_tzname))
if tzname is not None and tzname != conn_tzname:
tzname, sign, offset = backend_utils.split_tzname_delta(tzname)
if offset:
hours, minutes = offset.split(':')
offset_delta = datetime.timedelta(hours=int(hours), minutes=int(minutes))
dt += offset_delta if sign == '+' else -offset_delta
dt = timezone.localtime(dt, timezone_constructor(tzname))
return dt
def _sqlite_date_trunc(lookup_type, dt, tzname, conn_tzname):
dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt is None:
return None
if lookup_type == 'year':
return '%04i-01-01' % dt.year
elif lookup_type == 'quarter':
month_in_quarter = dt.month - (dt.month - 1) % 3
return '%04i-%02i-01' % (dt.year, month_in_quarter)
elif lookup_type == 'month':
return '%04i-%02i-01' % (dt.year, dt.month)
elif lookup_type == 'week':
dt = dt - datetime.timedelta(days=dt.weekday())
return '%04i-%02i-%02i' % (dt.year, dt.month, dt.day)
elif lookup_type == 'day':
return '%04i-%02i-%02i' % (dt.year, dt.month, dt.day)
def _sqlite_time_trunc(lookup_type, dt, tzname, conn_tzname):
if dt is None:
return None
dt_parsed = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt_parsed is None:
try:
dt = backend_utils.typecast_time(dt)
except (ValueError, TypeError):
return None
else:
dt = dt_parsed
if lookup_type == 'hour':
return "%02i:00:00" % dt.hour
elif lookup_type == 'minute':
return "%02i:%02i:00" % (dt.hour, dt.minute)
elif lookup_type == 'second':
return "%02i:%02i:%02i" % (dt.hour, dt.minute, dt.second)
def _sqlite_datetime_cast_date(dt, tzname, conn_tzname):
dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt is None:
return None
return dt.date().isoformat()
def _sqlite_datetime_cast_time(dt, tzname, conn_tzname):
dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt is None:
return None
return dt.time().isoformat()
def _sqlite_datetime_extract(lookup_type, dt, tzname=None, conn_tzname=None):
dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt is None:
return None
if lookup_type == 'week_day':
return (dt.isoweekday() % 7) + 1
elif lookup_type == 'iso_week_day':
return dt.isoweekday()
elif lookup_type == 'week':
return dt.isocalendar()[1]
elif lookup_type == 'quarter':
return math.ceil(dt.month / 3)
elif lookup_type == 'iso_year':
return dt.isocalendar()[0]
else:
return getattr(dt, lookup_type)
def _sqlite_datetime_trunc(lookup_type, dt, tzname, conn_tzname):
dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
if dt is None:
return None
if lookup_type == 'year':
return '%04i-01-01 00:00:00' % dt.year
elif lookup_type == 'quarter':
month_in_quarter = dt.month - (dt.month - 1) % 3
return '%04i-%02i-01 00:00:00' % (dt.year, month_in_quarter)
elif lookup_type == 'month':
return '%04i-%02i-01 00:00:00' % (dt.year, dt.month)
elif lookup_type == 'week':
dt = dt - datetime.timedelta(days=dt.weekday())
return '%04i-%02i-%02i 00:00:00' % (dt.year, dt.month, dt.day)
elif lookup_type == 'day':
return '%04i-%02i-%02i 00:00:00' % (dt.year, dt.month, dt.day)
elif lookup_type == 'hour':
return '%04i-%02i-%02i %02i:00:00' % (dt.year, dt.month, dt.day, dt.hour)
elif lookup_type == 'minute':
return '%04i-%02i-%02i %02i:%02i:00' % (dt.year, dt.month, dt.day, dt.hour, dt.minute)
elif lookup_type == 'second':
return '%04i-%02i-%02i %02i:%02i:%02i' % (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second)
def _sqlite_time_extract(lookup_type, dt):
if dt is None:
return None
try:
dt = backend_utils.typecast_time(dt)
except (ValueError, TypeError):
return None
return getattr(dt, lookup_type)
def _sqlite_prepare_dtdelta_param(conn, param):
if conn in ['+', '-']:
if isinstance(param, int):
return datetime.timedelta(0, 0, param)
else:
return backend_utils.typecast_timestamp(param)
return param
@none_guard
def _sqlite_format_dtdelta(conn, lhs, rhs):
"""
LHS and RHS can be either:
- An integer number of microseconds
- A string representing a datetime
- A scalar value, e.g. float
"""
conn = conn.strip()
try:
real_lhs = _sqlite_prepare_dtdelta_param(conn, lhs)
real_rhs = _sqlite_prepare_dtdelta_param(conn, rhs)
except (ValueError, TypeError):
return None
if conn == '+':
# typecast_timestamp returns a date or a datetime without timezone.
# It will be formatted as "%Y-%m-%d" or "%Y-%m-%d %H:%M:%S[.%f]"
out = str(real_lhs + real_rhs)
elif conn == '-':
out = str(real_lhs - real_rhs)
elif conn == '*':
out = real_lhs * real_rhs
else:
out = real_lhs / real_rhs
return out
@none_guard
def _sqlite_time_diff(lhs, rhs):
left = backend_utils.typecast_time(lhs)
right = backend_utils.typecast_time(rhs)
return (
(left.hour * 60 * 60 * 1000000) +
(left.minute * 60 * 1000000) +
(left.second * 1000000) +
(left.microsecond) -
(right.hour * 60 * 60 * 1000000) -
(right.minute * 60 * 1000000) -
(right.second * 1000000) -
(right.microsecond)
)
@none_guard
def _sqlite_timestamp_diff(lhs, rhs):
left = backend_utils.typecast_timestamp(lhs)
right = backend_utils.typecast_timestamp(rhs)
return duration_microseconds(left - right)
@none_guard
def _sqlite_regexp(re_pattern, re_string):
return bool(re.search(re_pattern, str(re_string)))
@none_guard
def _sqlite_lpad(text, length, fill_text):
if len(text) >= length:
return text[:length]
return (fill_text * length)[:length - len(text)] + text
@none_guard
def _sqlite_rpad(text, length, fill_text):
return (text + fill_text * length)[:length]
|
d222fc0a4f0329626c1d8eb78593ff967d6e03202760b4c7b8c2ab7caf040165 | import copy
from decimal import Decimal
from django.apps.registry import Apps
from django.db import NotSupportedError
from django.db.backends.base.schema import BaseDatabaseSchemaEditor
from django.db.backends.ddl_references import Statement
from django.db.backends.utils import strip_quotes
from django.db.models import UniqueConstraint
from django.db.transaction import atomic
class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
sql_delete_table = "DROP TABLE %(table)s"
sql_create_fk = None
sql_create_inline_fk = "REFERENCES %(to_table)s (%(to_column)s) DEFERRABLE INITIALLY DEFERRED"
sql_create_column_inline_fk = sql_create_inline_fk
sql_create_unique = "CREATE UNIQUE INDEX %(name)s ON %(table)s (%(columns)s)"
sql_delete_unique = "DROP INDEX %(name)s"
def __enter__(self):
# Some SQLite schema alterations need foreign key constraints to be
# disabled. Enforce it here for the duration of the schema edition.
if not self.connection.disable_constraint_checking():
raise NotSupportedError(
'SQLite schema editor cannot be used while foreign key '
'constraint checks are enabled. Make sure to disable them '
'before entering a transaction.atomic() context because '
'SQLite does not support disabling them in the middle of '
'a multi-statement transaction.'
)
return super().__enter__()
def __exit__(self, exc_type, exc_value, traceback):
self.connection.check_constraints()
super().__exit__(exc_type, exc_value, traceback)
self.connection.enable_constraint_checking()
def quote_value(self, value):
# The backend "mostly works" without this function and there are use
# cases for compiling Python without the sqlite3 libraries (e.g.
# security hardening).
try:
import sqlite3
value = sqlite3.adapt(value)
except ImportError:
pass
except sqlite3.ProgrammingError:
pass
# Manual emulation of SQLite parameter quoting
if isinstance(value, bool):
return str(int(value))
elif isinstance(value, (Decimal, float, int)):
return str(value)
elif isinstance(value, str):
return "'%s'" % value.replace("\'", "\'\'")
elif value is None:
return "NULL"
elif isinstance(value, (bytes, bytearray, memoryview)):
# Bytes are only allowed for BLOB fields, encoded as string
# literals containing hexadecimal data and preceded by a single "X"
# character.
return "X'%s'" % value.hex()
else:
raise ValueError("Cannot quote parameter value %r of type %s" % (value, type(value)))
def prepare_default(self, value):
return self.quote_value(value)
def _is_referenced_by_fk_constraint(self, table_name, column_name=None, ignore_self=False):
"""
Return whether or not the provided table name is referenced by another
one. If `column_name` is specified, only references pointing to that
column are considered. If `ignore_self` is True, self-referential
constraints are ignored.
"""
with self.connection.cursor() as cursor:
for other_table in self.connection.introspection.get_table_list(cursor):
if ignore_self and other_table.name == table_name:
continue
relations = self.connection.introspection.get_relations(cursor, other_table.name)
for constraint_column, constraint_table in relations.values():
if (constraint_table == table_name and
(column_name is None or constraint_column == column_name)):
return True
return False
def alter_db_table(self, model, old_db_table, new_db_table, disable_constraints=True):
if (not self.connection.features.supports_atomic_references_rename and
disable_constraints and self._is_referenced_by_fk_constraint(old_db_table)):
if self.connection.in_atomic_block:
raise NotSupportedError((
'Renaming the %r table while in a transaction is not '
'supported on SQLite < 3.26 because it would break referential '
'integrity. Try adding `atomic = False` to the Migration class.'
) % old_db_table)
self.connection.enable_constraint_checking()
super().alter_db_table(model, old_db_table, new_db_table)
self.connection.disable_constraint_checking()
else:
super().alter_db_table(model, old_db_table, new_db_table)
def alter_field(self, model, old_field, new_field, strict=False):
if not self._field_should_be_altered(old_field, new_field):
return
old_field_name = old_field.name
table_name = model._meta.db_table
_, old_column_name = old_field.get_attname_column()
if (new_field.name != old_field_name and
not self.connection.features.supports_atomic_references_rename and
self._is_referenced_by_fk_constraint(table_name, old_column_name, ignore_self=True)):
if self.connection.in_atomic_block:
raise NotSupportedError((
'Renaming the %r.%r column while in a transaction is not '
'supported on SQLite < 3.26 because it would break referential '
'integrity. Try adding `atomic = False` to the Migration class.'
) % (model._meta.db_table, old_field_name))
with atomic(self.connection.alias):
super().alter_field(model, old_field, new_field, strict=strict)
# Follow SQLite's documented procedure for performing changes
# that don't affect the on-disk content.
# https://sqlite.org/lang_altertable.html#otheralter
with self.connection.cursor() as cursor:
schema_version = cursor.execute('PRAGMA schema_version').fetchone()[0]
cursor.execute('PRAGMA writable_schema = 1')
references_template = ' REFERENCES "%s" ("%%s") ' % table_name
new_column_name = new_field.get_attname_column()[1]
search = references_template % old_column_name
replacement = references_template % new_column_name
cursor.execute('UPDATE sqlite_master SET sql = replace(sql, %s, %s)', (search, replacement))
cursor.execute('PRAGMA schema_version = %d' % (schema_version + 1))
cursor.execute('PRAGMA writable_schema = 0')
# The integrity check will raise an exception and rollback
# the transaction if the sqlite_master updates corrupt the
# database.
cursor.execute('PRAGMA integrity_check')
# Perform a VACUUM to refresh the database representation from
# the sqlite_master table.
with self.connection.cursor() as cursor:
cursor.execute('VACUUM')
else:
super().alter_field(model, old_field, new_field, strict=strict)
def _remake_table(self, model, create_field=None, delete_field=None, alter_field=None):
"""
Shortcut to transform a model from old_model into new_model
This follows the correct procedure to perform non-rename or column
addition operations based on SQLite's documentation
https://www.sqlite.org/lang_altertable.html#caution
The essential steps are:
1. Create a table with the updated definition called "new__app_model"
2. Copy the data from the existing "app_model" table to the new table
3. Drop the "app_model" table
4. Rename the "new__app_model" table to "app_model"
5. Restore any index of the previous "app_model" table.
"""
# Self-referential fields must be recreated rather than copied from
# the old model to ensure their remote_field.field_name doesn't refer
# to an altered field.
def is_self_referential(f):
return f.is_relation and f.remote_field.model is model
# Work out the new fields dict / mapping
body = {
f.name: f.clone() if is_self_referential(f) else f
for f in model._meta.local_concrete_fields
}
# Since mapping might mix column names and default values,
# its values must be already quoted.
mapping = {f.column: self.quote_name(f.column) for f in model._meta.local_concrete_fields}
# This maps field names (not columns) for things like unique_together
rename_mapping = {}
# If any of the new or altered fields is introducing a new PK,
# remove the old one
restore_pk_field = None
if getattr(create_field, 'primary_key', False) or (
alter_field and getattr(alter_field[1], 'primary_key', False)):
for name, field in list(body.items()):
if field.primary_key:
field.primary_key = False
restore_pk_field = field
if field.auto_created:
del body[name]
del mapping[field.column]
# Add in any created fields
if create_field:
body[create_field.name] = create_field
# Choose a default and insert it into the copy map
if not create_field.many_to_many and create_field.concrete:
mapping[create_field.column] = self.prepare_default(
self.effective_default(create_field),
)
# Add in any altered fields
if alter_field:
old_field, new_field = alter_field
body.pop(old_field.name, None)
mapping.pop(old_field.column, None)
body[new_field.name] = new_field
if old_field.null and not new_field.null:
case_sql = "coalesce(%(col)s, %(default)s)" % {
'col': self.quote_name(old_field.column),
'default': self.prepare_default(self.effective_default(new_field)),
}
mapping[new_field.column] = case_sql
else:
mapping[new_field.column] = self.quote_name(old_field.column)
rename_mapping[old_field.name] = new_field.name
# Remove any deleted fields
if delete_field:
del body[delete_field.name]
del mapping[delete_field.column]
# Remove any implicit M2M tables
if delete_field.many_to_many and delete_field.remote_field.through._meta.auto_created:
return self.delete_model(delete_field.remote_field.through)
# Work inside a new app registry
apps = Apps()
# Work out the new value of unique_together, taking renames into
# account
unique_together = [
[rename_mapping.get(n, n) for n in unique]
for unique in model._meta.unique_together
]
# Work out the new value for index_together, taking renames into
# account
index_together = [
[rename_mapping.get(n, n) for n in index]
for index in model._meta.index_together
]
indexes = model._meta.indexes
if delete_field:
indexes = [
index for index in indexes
if delete_field.name not in index.fields
]
constraints = list(model._meta.constraints)
# Provide isolated instances of the fields to the new model body so
# that the existing model's internals aren't interfered with when
# the dummy model is constructed.
body_copy = copy.deepcopy(body)
# Construct a new model with the new fields to allow self referential
# primary key to resolve to. This model won't ever be materialized as a
# table and solely exists for foreign key reference resolution purposes.
# This wouldn't be required if the schema editor was operating on model
# states instead of rendered models.
meta_contents = {
'app_label': model._meta.app_label,
'db_table': model._meta.db_table,
'unique_together': unique_together,
'index_together': index_together,
'indexes': indexes,
'constraints': constraints,
'apps': apps,
}
meta = type("Meta", (), meta_contents)
body_copy['Meta'] = meta
body_copy['__module__'] = model.__module__
type(model._meta.object_name, model.__bases__, body_copy)
# Construct a model with a renamed table name.
body_copy = copy.deepcopy(body)
meta_contents = {
'app_label': model._meta.app_label,
'db_table': 'new__%s' % strip_quotes(model._meta.db_table),
'unique_together': unique_together,
'index_together': index_together,
'indexes': indexes,
'constraints': constraints,
'apps': apps,
}
meta = type("Meta", (), meta_contents)
body_copy['Meta'] = meta
body_copy['__module__'] = model.__module__
new_model = type('New%s' % model._meta.object_name, model.__bases__, body_copy)
# Create a new table with the updated schema.
self.create_model(new_model)
# Copy data from the old table into the new table
self.execute("INSERT INTO %s (%s) SELECT %s FROM %s" % (
self.quote_name(new_model._meta.db_table),
', '.join(self.quote_name(x) for x in mapping),
', '.join(mapping.values()),
self.quote_name(model._meta.db_table),
))
# Delete the old table to make way for the new
self.delete_model(model, handle_autom2m=False)
# Rename the new table to take way for the old
self.alter_db_table(
new_model, new_model._meta.db_table, model._meta.db_table,
disable_constraints=False,
)
# Run deferred SQL on correct table
for sql in self.deferred_sql:
self.execute(sql)
self.deferred_sql = []
# Fix any PK-removed field
if restore_pk_field:
restore_pk_field.primary_key = True
def delete_model(self, model, handle_autom2m=True):
if handle_autom2m:
super().delete_model(model)
else:
# Delete the table (and only that)
self.execute(self.sql_delete_table % {
"table": self.quote_name(model._meta.db_table),
})
# Remove all deferred statements referencing the deleted table.
for sql in list(self.deferred_sql):
if isinstance(sql, Statement) and sql.references_table(model._meta.db_table):
self.deferred_sql.remove(sql)
def add_field(self, model, field):
"""Create a field on a model."""
# Fields with default values cannot by handled by ALTER TABLE ADD
# COLUMN statement because DROP DEFAULT is not supported in
# ALTER TABLE.
if not field.null or self.effective_default(field) is not None:
self._remake_table(model, create_field=field)
else:
super().add_field(model, field)
def remove_field(self, model, field):
"""
Remove a field from a model. Usually involves deleting a column,
but for M2Ms may involve deleting a table.
"""
# M2M fields are a special case
if field.many_to_many:
# For implicit M2M tables, delete the auto-created table
if field.remote_field.through._meta.auto_created:
self.delete_model(field.remote_field.through)
# For explicit "through" M2M fields, do nothing
# For everything else, remake.
else:
# It might not actually have a column behind it
if field.db_parameters(connection=self.connection)['type'] is None:
return
self._remake_table(model, delete_field=field)
def _alter_field(self, model, old_field, new_field, old_type, new_type,
old_db_params, new_db_params, strict=False):
"""Perform a "physical" (non-ManyToMany) field update."""
# Use "ALTER TABLE ... RENAME COLUMN" if only the column name
# changed and there aren't any constraints.
if (self.connection.features.can_alter_table_rename_column and
old_field.column != new_field.column and
self.column_sql(model, old_field) == self.column_sql(model, new_field) and
not (old_field.remote_field and old_field.db_constraint or
new_field.remote_field and new_field.db_constraint)):
return self.execute(self._rename_field_sql(model._meta.db_table, old_field, new_field, new_type))
# Alter by remaking table
self._remake_table(model, alter_field=(old_field, new_field))
# Rebuild tables with FKs pointing to this field.
if new_field.unique and old_type != new_type:
related_models = set()
opts = new_field.model._meta
for remote_field in opts.related_objects:
# Ignore self-relationship since the table was already rebuilt.
if remote_field.related_model == model:
continue
if not remote_field.many_to_many:
if remote_field.field_name == new_field.name:
related_models.add(remote_field.related_model)
elif new_field.primary_key and remote_field.through._meta.auto_created:
related_models.add(remote_field.through)
if new_field.primary_key:
for many_to_many in opts.many_to_many:
# Ignore self-relationship since the table was already rebuilt.
if many_to_many.related_model == model:
continue
if many_to_many.remote_field.through._meta.auto_created:
related_models.add(many_to_many.remote_field.through)
for related_model in related_models:
self._remake_table(related_model)
def _alter_many_to_many(self, model, old_field, new_field, strict):
"""Alter M2Ms to repoint their to= endpoints."""
if old_field.remote_field.through._meta.db_table == new_field.remote_field.through._meta.db_table:
# The field name didn't change, but some options did; we have to propagate this altering.
self._remake_table(
old_field.remote_field.through,
alter_field=(
# We need the field that points to the target model, so we can tell alter_field to change it -
# this is m2m_reverse_field_name() (as opposed to m2m_field_name, which points to our model)
old_field.remote_field.through._meta.get_field(old_field.m2m_reverse_field_name()),
new_field.remote_field.through._meta.get_field(new_field.m2m_reverse_field_name()),
),
)
return
# Make a new through table
self.create_model(new_field.remote_field.through)
# Copy the data across
self.execute("INSERT INTO %s (%s) SELECT %s FROM %s" % (
self.quote_name(new_field.remote_field.through._meta.db_table),
', '.join([
"id",
new_field.m2m_column_name(),
new_field.m2m_reverse_name(),
]),
', '.join([
"id",
old_field.m2m_column_name(),
old_field.m2m_reverse_name(),
]),
self.quote_name(old_field.remote_field.through._meta.db_table),
))
# Delete the old through table
self.delete_model(old_field.remote_field.through)
def add_constraint(self, model, constraint):
if isinstance(constraint, UniqueConstraint) and (
constraint.condition or
constraint.contains_expressions or
constraint.include or
constraint.deferrable
):
super().add_constraint(model, constraint)
else:
self._remake_table(model)
def remove_constraint(self, model, constraint):
if isinstance(constraint, UniqueConstraint) and (
constraint.condition or
constraint.contains_expressions or
constraint.include or
constraint.deferrable
):
super().remove_constraint(model, constraint)
else:
self._remake_table(model)
def _collate_sql(self, collation):
return 'COLLATE ' + collation
|
c519163afac92ffb3d947724e54db92d9375b6e775d32daecee809f7a03ec72a | """Redis cache backend."""
import random
import re
from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
from django.core.serializers.base import PickleSerializer
from django.utils.functional import cached_property
from django.utils.module_loading import import_string
class RedisSerializer(PickleSerializer):
"""
Similar to PickSerializer, except integers are serialized as native Redis
integers for better incr() and decr() atomicity.
"""
def dumps(self, obj):
# Only skip pickling for integers, a int subclasses as bool should be
# pickled.
if type(obj) is int:
return obj
return super().dumps(obj)
def loads(self, data):
try:
return int(data)
except ValueError:
return super().loads(data)
class RedisCacheClient:
def __init__(
self,
servers,
serializer=None,
db=None,
pool_class=None,
parser_class=None,
):
import redis
self._lib = redis
self._servers = servers
self._pools = {}
self._client = self._lib.Redis
if isinstance(pool_class, str):
pool_class = import_string(pool_class)
self._pool_class = pool_class or self._lib.ConnectionPool
if isinstance(serializer, str):
serializer = import_string(serializer)
if callable(serializer):
serializer = serializer()
self._serializer = serializer or RedisSerializer()
if isinstance(parser_class, str):
parser_class = import_string(parser_class)
parser_class = parser_class or self._lib.connection.DefaultParser
self._pool_options = {'parser_class': parser_class, 'db': db}
def _get_connection_pool_index(self, write):
# Write to the first server. Read from other servers if there are more,
# otherwise read from the first server.
if write or len(self._servers) == 1:
return 0
return random.randint(1, len(self._servers) - 1)
def _get_connection_pool(self, write):
index = self._get_connection_pool_index(write)
if index not in self._pools:
self._pools[index] = self._pool_class.from_url(
self._servers[index], **self._pool_options,
)
return self._pools[index]
def get_client(self, key=None, *, write=False):
# key is used so that the method signature remains the same and custom
# cache client can be implemented which might require the key to select
# the server, e.g. sharding.
pool = self._get_connection_pool(write)
return self._client(connection_pool=pool)
def add(self, key, value, timeout):
client = self.get_client(key, write=True)
value = self._serializer.dumps(value)
if timeout == 0:
if ret := bool(client.set(key, value, nx=True)):
client.delete(key)
return ret
else:
return bool(client.set(key, value, ex=timeout, nx=True))
def get(self, key, default):
client = self.get_client(key)
value = client.get(key)
return default if value is None else self._serializer.loads(value)
def set(self, key, value, timeout):
client = self.get_client(key, write=True)
value = self._serializer.dumps(value)
if timeout == 0:
client.delete(key)
else:
client.set(key, value, ex=timeout)
def touch(self, key, timeout):
client = self.get_client(key, write=True)
if timeout is None:
return bool(client.persist(key))
else:
return bool(client.expire(key, timeout))
def delete(self, key):
client = self.get_client(key, write=True)
return bool(client.delete(key))
def get_many(self, keys):
client = self.get_client(None)
ret = client.mget(keys)
return {
k: self._serializer.loads(v) for k, v in zip(keys, ret) if v is not None
}
def has_key(self, key):
client = self.get_client(key)
return bool(client.exists(key))
def incr(self, key, delta):
client = self.get_client(key)
if not client.exists(key):
raise ValueError("Key '%s' not found." % key)
return client.incr(key, delta)
def set_many(self, data, timeout):
client = self.get_client(None, write=True)
pipeline = client.pipeline()
pipeline.mset({k: self._serializer.dumps(v) for k, v in data.items()})
if timeout is not None:
# Setting timeout for each key as redis does not support timeout
# with mset().
for key in data:
pipeline.expire(key, timeout)
pipeline.execute()
def delete_many(self, keys):
client = self.get_client(None, write=True)
client.delete(*keys)
def clear(self):
client = self.get_client(None, write=True)
return bool(client.flushdb())
class RedisCache(BaseCache):
def __init__(self, server, params):
super().__init__(params)
if isinstance(server, str):
self._servers = re.split('[;,]', server)
else:
self._servers = server
self._class = RedisCacheClient
self._options = params.get('OPTIONS', {})
@cached_property
def _cache(self):
return self._class(self._servers, **self._options)
def get_backend_timeout(self, timeout=DEFAULT_TIMEOUT):
if timeout == DEFAULT_TIMEOUT:
timeout = self.default_timeout
# The key will be made persistent if None used as a timeout.
# Non-positive values will cause the key to be deleted.
return None if timeout is None else max(0, int(timeout))
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.add(key, value, self.get_backend_timeout(timeout))
def get(self, key, default=None, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.get(key, default)
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
self._cache.set(key, value, self.get_backend_timeout(timeout))
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.touch(key, self.get_backend_timeout(timeout))
def delete(self, key, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.delete(key)
def get_many(self, keys, version=None):
key_map = {self.make_and_validate_key(key, version=version): key for key in keys}
ret = self._cache.get_many(key_map.keys())
return {key_map[k]: v for k, v in ret.items()}
def has_key(self, key, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.has_key(key)
def incr(self, key, delta=1, version=None):
key = self.make_and_validate_key(key, version=version)
return self._cache.incr(key, delta)
def set_many(self, data, timeout=DEFAULT_TIMEOUT, version=None):
safe_data = {}
for key, value in data.items():
key = self.make_and_validate_key(key, version=version)
safe_data[key] = value
self._cache.set_many(safe_data, self.get_backend_timeout(timeout))
return []
def delete_many(self, keys, version=None):
safe_keys = []
for key in keys:
key = self.make_and_validate_key(key, version=version)
safe_keys.append(key)
self._cache.delete_many(safe_keys)
def clear(self):
return self._cache.clear()
|
bb6c523c629ab5084f7f4c90a95bd157fc5bf1a91506ccd44e8906b832208503 | from django.apps import AppConfig
from django.contrib.messages.storage import base
from django.contrib.messages.utils import get_level_tags
from django.test.signals import setting_changed
from django.utils.translation import gettext_lazy as _
def update_level_tags(setting, **kwargs):
if setting == 'MESSAGE_TAGS':
base.LEVEL_TAGS = get_level_tags()
class MessagesConfig(AppConfig):
name = 'django.contrib.messages'
verbose_name = _("Messages")
def ready(self):
setting_changed.connect(update_level_tags)
|
4f6db1778c2bee102c0fcd5c3dced468aeafb42e42ca39a2b2e18b576896fb9b | import functools
import gzip
import re
from difflib import SequenceMatcher
from pathlib import Path
from django.conf import settings
from django.core.exceptions import (
FieldDoesNotExist, ImproperlyConfigured, ValidationError,
)
from django.utils.functional import cached_property, lazy
from django.utils.html import format_html, format_html_join
from django.utils.module_loading import import_string
from django.utils.translation import gettext as _, ngettext
@functools.lru_cache(maxsize=None)
def get_default_password_validators():
return get_password_validators(settings.AUTH_PASSWORD_VALIDATORS)
def get_password_validators(validator_config):
validators = []
for validator in validator_config:
try:
klass = import_string(validator['NAME'])
except ImportError:
msg = "The module in NAME could not be imported: %s. Check your AUTH_PASSWORD_VALIDATORS setting."
raise ImproperlyConfigured(msg % validator['NAME'])
validators.append(klass(**validator.get('OPTIONS', {})))
return validators
def validate_password(password, user=None, password_validators=None):
"""
Validate that the password meets all validator requirements.
If the password is valid, return ``None``.
If the password is invalid, raise ValidationError with all error messages.
"""
errors = []
if password_validators is None:
password_validators = get_default_password_validators()
for validator in password_validators:
try:
validator.validate(password, user)
except ValidationError as error:
errors.append(error)
if errors:
raise ValidationError(errors)
def password_changed(password, user=None, password_validators=None):
"""
Inform all validators that have implemented a password_changed() method
that the password has been changed.
"""
if password_validators is None:
password_validators = get_default_password_validators()
for validator in password_validators:
password_changed = getattr(validator, 'password_changed', lambda *a: None)
password_changed(password, user)
def password_validators_help_texts(password_validators=None):
"""
Return a list of all help texts of all configured validators.
"""
help_texts = []
if password_validators is None:
password_validators = get_default_password_validators()
for validator in password_validators:
help_texts.append(validator.get_help_text())
return help_texts
def _password_validators_help_text_html(password_validators=None):
"""
Return an HTML string with all help texts of all configured validators
in an <ul>.
"""
help_texts = password_validators_help_texts(password_validators)
help_items = format_html_join('', '<li>{}</li>', ((help_text,) for help_text in help_texts))
return format_html('<ul>{}</ul>', help_items) if help_items else ''
password_validators_help_text_html = lazy(_password_validators_help_text_html, str)
class MinimumLengthValidator:
"""
Validate that the password is of a minimum length.
"""
def __init__(self, min_length=8):
self.min_length = min_length
def validate(self, password, user=None):
if len(password) < self.min_length:
raise ValidationError(
ngettext(
"This password is too short. It must contain at least %(min_length)d character.",
"This password is too short. It must contain at least %(min_length)d characters.",
self.min_length
),
code='password_too_short',
params={'min_length': self.min_length},
)
def get_help_text(self):
return ngettext(
"Your password must contain at least %(min_length)d character.",
"Your password must contain at least %(min_length)d characters.",
self.min_length
) % {'min_length': self.min_length}
class UserAttributeSimilarityValidator:
"""
Validate that the password is sufficiently different from the user's
attributes.
If no specific attributes are provided, look at a sensible list of
defaults. Attributes that don't exist are ignored. Comparison is made to
not only the full attribute value, but also its components, so that, for
example, a password is validated against either part of an email address,
as well as the full address.
"""
DEFAULT_USER_ATTRIBUTES = ('username', 'first_name', 'last_name', 'email')
def __init__(self, user_attributes=DEFAULT_USER_ATTRIBUTES, max_similarity=0.7):
self.user_attributes = user_attributes
self.max_similarity = max_similarity
def validate(self, password, user=None):
if not user:
return
for attribute_name in self.user_attributes:
value = getattr(user, attribute_name, None)
if not value or not isinstance(value, str):
continue
value_parts = re.split(r'\W+', value) + [value]
for value_part in value_parts:
if SequenceMatcher(a=password.lower(), b=value_part.lower()).quick_ratio() >= self.max_similarity:
try:
verbose_name = str(user._meta.get_field(attribute_name).verbose_name)
except FieldDoesNotExist:
verbose_name = attribute_name
raise ValidationError(
_("The password is too similar to the %(verbose_name)s."),
code='password_too_similar',
params={'verbose_name': verbose_name},
)
def get_help_text(self):
return _('Your password can’t be too similar to your other personal information.')
class CommonPasswordValidator:
"""
Validate that the password is not a common password.
The password is rejected if it occurs in a provided list of passwords,
which may be gzipped. The list Django ships with contains 20000 common
passwords (lowercased and deduplicated), created by Royce Williams:
https://gist.github.com/roycewilliams/281ce539915a947a23db17137d91aeb7
The password list must be lowercased to match the comparison in validate().
"""
@cached_property
def DEFAULT_PASSWORD_LIST_PATH(self):
return Path(__file__).resolve().parent / 'common-passwords.txt.gz'
def __init__(self, password_list_path=DEFAULT_PASSWORD_LIST_PATH):
if password_list_path is CommonPasswordValidator.DEFAULT_PASSWORD_LIST_PATH:
password_list_path = self.DEFAULT_PASSWORD_LIST_PATH
try:
with gzip.open(password_list_path, 'rt', encoding='utf-8') as f:
self.passwords = {x.strip() for x in f}
except OSError:
with open(password_list_path) as f:
self.passwords = {x.strip() for x in f}
def validate(self, password, user=None):
if password.lower().strip() in self.passwords:
raise ValidationError(
_("This password is too common."),
code='password_too_common',
)
def get_help_text(self):
return _('Your password can’t be a commonly used password.')
class NumericPasswordValidator:
"""
Validate that the password is not entirely numeric.
"""
def validate(self, password, user=None):
if password.isdigit():
raise ValidationError(
_("This password is entirely numeric."),
code='password_entirely_numeric',
)
def get_help_text(self):
return _('Your password can’t be entirely numeric.')
|
4f3c8934b7ed465ccabf83b7104c004cadfaa9d446c1899bc3fd93a312c5bbbd | import copy
import json
import re
from functools import partial, update_wrapper
from urllib.parse import quote as urlquote
from django import forms
from django.conf import settings
from django.contrib import messages
from django.contrib.admin import helpers, widgets
from django.contrib.admin.checks import (
BaseModelAdminChecks, InlineModelAdminChecks, ModelAdminChecks,
)
from django.contrib.admin.decorators import display
from django.contrib.admin.exceptions import DisallowedModelAdminToField
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.utils import (
NestedObjects, construct_change_message, flatten_fieldsets,
get_deleted_objects, lookup_spawns_duplicates, model_format_dict,
model_ngettext, quote, unquote,
)
from django.contrib.admin.widgets import (
AutocompleteSelect, AutocompleteSelectMultiple,
)
from django.contrib.auth import get_permission_codename
from django.core.exceptions import (
FieldDoesNotExist, FieldError, PermissionDenied, ValidationError,
)
from django.core.paginator import Paginator
from django.db import models, router, transaction
from django.db.models.constants import LOOKUP_SEP
from django.forms.formsets import DELETION_FIELD_NAME, all_valid
from django.forms.models import (
BaseInlineFormSet, inlineformset_factory, modelform_defines_fields,
modelform_factory, modelformset_factory,
)
from django.forms.widgets import CheckboxSelectMultiple, SelectMultiple
from django.http import HttpResponseRedirect
from django.http.response import HttpResponseBase
from django.template.response import SimpleTemplateResponse, TemplateResponse
from django.urls import reverse
from django.utils.decorators import method_decorator
from django.utils.html import format_html
from django.utils.http import urlencode
from django.utils.safestring import mark_safe
from django.utils.text import (
capfirst, format_lazy, get_text_list, smart_split, unescape_string_literal,
)
from django.utils.translation import gettext as _, ngettext
from django.views.decorators.csrf import csrf_protect
from django.views.generic import RedirectView
IS_POPUP_VAR = '_popup'
TO_FIELD_VAR = '_to_field'
HORIZONTAL, VERTICAL = 1, 2
def get_content_type_for_model(obj):
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level.
from django.contrib.contenttypes.models import ContentType
return ContentType.objects.get_for_model(obj, for_concrete_model=False)
def get_ul_class(radio_style):
return 'radiolist' if radio_style == VERTICAL else 'radiolist inline'
class IncorrectLookupParameters(Exception):
pass
# Defaults for formfield_overrides. ModelAdmin subclasses can change this
# by adding to ModelAdmin.formfield_overrides.
FORMFIELD_FOR_DBFIELD_DEFAULTS = {
models.DateTimeField: {
'form_class': forms.SplitDateTimeField,
'widget': widgets.AdminSplitDateTime
},
models.DateField: {'widget': widgets.AdminDateWidget},
models.TimeField: {'widget': widgets.AdminTimeWidget},
models.TextField: {'widget': widgets.AdminTextareaWidget},
models.URLField: {'widget': widgets.AdminURLFieldWidget},
models.IntegerField: {'widget': widgets.AdminIntegerFieldWidget},
models.BigIntegerField: {'widget': widgets.AdminBigIntegerFieldWidget},
models.CharField: {'widget': widgets.AdminTextInputWidget},
models.ImageField: {'widget': widgets.AdminFileWidget},
models.FileField: {'widget': widgets.AdminFileWidget},
models.EmailField: {'widget': widgets.AdminEmailInputWidget},
models.UUIDField: {'widget': widgets.AdminUUIDInputWidget},
}
csrf_protect_m = method_decorator(csrf_protect)
class BaseModelAdmin(metaclass=forms.MediaDefiningClass):
"""Functionality common to both ModelAdmin and InlineAdmin."""
autocomplete_fields = ()
raw_id_fields = ()
fields = None
exclude = None
fieldsets = None
form = forms.ModelForm
filter_vertical = ()
filter_horizontal = ()
radio_fields = {}
prepopulated_fields = {}
formfield_overrides = {}
readonly_fields = ()
ordering = None
sortable_by = None
view_on_site = True
show_full_result_count = True
checks_class = BaseModelAdminChecks
def check(self, **kwargs):
return self.checks_class().check(self, **kwargs)
def __init__(self):
# Merge FORMFIELD_FOR_DBFIELD_DEFAULTS with the formfield_overrides
# rather than simply overwriting.
overrides = copy.deepcopy(FORMFIELD_FOR_DBFIELD_DEFAULTS)
for k, v in self.formfield_overrides.items():
overrides.setdefault(k, {}).update(v)
self.formfield_overrides = overrides
def formfield_for_dbfield(self, db_field, request, **kwargs):
"""
Hook for specifying the form Field instance for a given database Field
instance.
If kwargs are given, they're passed to the form Field's constructor.
"""
# If the field specifies choices, we don't need to look for special
# admin widgets - we just need to use a select widget of some kind.
if db_field.choices:
return self.formfield_for_choice_field(db_field, request, **kwargs)
# ForeignKey or ManyToManyFields
if isinstance(db_field, (models.ForeignKey, models.ManyToManyField)):
# Combine the field kwargs with any options for formfield_overrides.
# Make sure the passed in **kwargs override anything in
# formfield_overrides because **kwargs is more specific, and should
# always win.
if db_field.__class__ in self.formfield_overrides:
kwargs = {**self.formfield_overrides[db_field.__class__], **kwargs}
# Get the correct formfield.
if isinstance(db_field, models.ForeignKey):
formfield = self.formfield_for_foreignkey(db_field, request, **kwargs)
elif isinstance(db_field, models.ManyToManyField):
formfield = self.formfield_for_manytomany(db_field, request, **kwargs)
# For non-raw_id fields, wrap the widget with a wrapper that adds
# extra HTML -- the "add other" interface -- to the end of the
# rendered output. formfield can be None if it came from a
# OneToOneField with parent_link=True or a M2M intermediary.
if formfield and db_field.name not in self.raw_id_fields:
related_modeladmin = self.admin_site._registry.get(db_field.remote_field.model)
wrapper_kwargs = {}
if related_modeladmin:
wrapper_kwargs.update(
can_add_related=related_modeladmin.has_add_permission(request),
can_change_related=related_modeladmin.has_change_permission(request),
can_delete_related=related_modeladmin.has_delete_permission(request),
can_view_related=related_modeladmin.has_view_permission(request),
)
formfield.widget = widgets.RelatedFieldWidgetWrapper(
formfield.widget, db_field.remote_field, self.admin_site, **wrapper_kwargs
)
return formfield
# If we've got overrides for the formfield defined, use 'em. **kwargs
# passed to formfield_for_dbfield override the defaults.
for klass in db_field.__class__.mro():
if klass in self.formfield_overrides:
kwargs = {**copy.deepcopy(self.formfield_overrides[klass]), **kwargs}
return db_field.formfield(**kwargs)
# For any other type of field, just call its formfield() method.
return db_field.formfield(**kwargs)
def formfield_for_choice_field(self, db_field, request, **kwargs):
"""
Get a form Field for a database Field that has declared choices.
"""
# If the field is named as a radio_field, use a RadioSelect
if db_field.name in self.radio_fields:
# Avoid stomping on custom widget/choices arguments.
if 'widget' not in kwargs:
kwargs['widget'] = widgets.AdminRadioSelect(attrs={
'class': get_ul_class(self.radio_fields[db_field.name]),
})
if 'choices' not in kwargs:
kwargs['choices'] = db_field.get_choices(
include_blank=db_field.blank,
blank_choice=[('', _('None'))]
)
return db_field.formfield(**kwargs)
def get_field_queryset(self, db, db_field, request):
"""
If the ModelAdmin specifies ordering, the queryset should respect that
ordering. Otherwise don't specify the queryset, let the field decide
(return None in that case).
"""
related_admin = self.admin_site._registry.get(db_field.remote_field.model)
if related_admin is not None:
ordering = related_admin.get_ordering(request)
if ordering is not None and ordering != ():
return db_field.remote_field.model._default_manager.using(db).order_by(*ordering)
return None
def formfield_for_foreignkey(self, db_field, request, **kwargs):
"""
Get a form Field for a ForeignKey.
"""
db = kwargs.get('using')
if 'widget' not in kwargs:
if db_field.name in self.get_autocomplete_fields(request):
kwargs['widget'] = AutocompleteSelect(db_field, self.admin_site, using=db)
elif db_field.name in self.raw_id_fields:
kwargs['widget'] = widgets.ForeignKeyRawIdWidget(db_field.remote_field, self.admin_site, using=db)
elif db_field.name in self.radio_fields:
kwargs['widget'] = widgets.AdminRadioSelect(attrs={
'class': get_ul_class(self.radio_fields[db_field.name]),
})
kwargs['empty_label'] = _('None') if db_field.blank else None
if 'queryset' not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs['queryset'] = queryset
return db_field.formfield(**kwargs)
def formfield_for_manytomany(self, db_field, request, **kwargs):
"""
Get a form Field for a ManyToManyField.
"""
# If it uses an intermediary model that isn't auto created, don't show
# a field in admin.
if not db_field.remote_field.through._meta.auto_created:
return None
db = kwargs.get('using')
if 'widget' not in kwargs:
autocomplete_fields = self.get_autocomplete_fields(request)
if db_field.name in autocomplete_fields:
kwargs['widget'] = AutocompleteSelectMultiple(
db_field,
self.admin_site,
using=db,
)
elif db_field.name in self.raw_id_fields:
kwargs['widget'] = widgets.ManyToManyRawIdWidget(
db_field.remote_field,
self.admin_site,
using=db,
)
elif db_field.name in [*self.filter_vertical, *self.filter_horizontal]:
kwargs['widget'] = widgets.FilteredSelectMultiple(
db_field.verbose_name,
db_field.name in self.filter_vertical
)
if 'queryset' not in kwargs:
queryset = self.get_field_queryset(db, db_field, request)
if queryset is not None:
kwargs['queryset'] = queryset
form_field = db_field.formfield(**kwargs)
if (isinstance(form_field.widget, SelectMultiple) and
not isinstance(form_field.widget, (CheckboxSelectMultiple, AutocompleteSelectMultiple))):
msg = _('Hold down “Control”, or “Command” on a Mac, to select more than one.')
help_text = form_field.help_text
form_field.help_text = format_lazy('{} {}', help_text, msg) if help_text else msg
return form_field
def get_autocomplete_fields(self, request):
"""
Return a list of ForeignKey and/or ManyToMany fields which should use
an autocomplete widget.
"""
return self.autocomplete_fields
def get_view_on_site_url(self, obj=None):
if obj is None or not self.view_on_site:
return None
if callable(self.view_on_site):
return self.view_on_site(obj)
elif hasattr(obj, 'get_absolute_url'):
# use the ContentType lookup if view_on_site is True
return reverse('admin:view_on_site', kwargs={
'content_type_id': get_content_type_for_model(obj).pk,
'object_id': obj.pk
})
def get_empty_value_display(self):
"""
Return the empty_value_display set on ModelAdmin or AdminSite.
"""
try:
return mark_safe(self.empty_value_display)
except AttributeError:
return mark_safe(self.admin_site.empty_value_display)
def get_exclude(self, request, obj=None):
"""
Hook for specifying exclude.
"""
return self.exclude
def get_fields(self, request, obj=None):
"""
Hook for specifying fields.
"""
if self.fields:
return self.fields
# _get_form_for_get_fields() is implemented in subclasses.
form = self._get_form_for_get_fields(request, obj)
return [*form.base_fields, *self.get_readonly_fields(request, obj)]
def get_fieldsets(self, request, obj=None):
"""
Hook for specifying fieldsets.
"""
if self.fieldsets:
return self.fieldsets
return [(None, {'fields': self.get_fields(request, obj)})]
def get_inlines(self, request, obj):
"""Hook for specifying custom inlines."""
return self.inlines
def get_ordering(self, request):
"""
Hook for specifying field ordering.
"""
return self.ordering or () # otherwise we might try to *None, which is bad ;)
def get_readonly_fields(self, request, obj=None):
"""
Hook for specifying custom readonly fields.
"""
return self.readonly_fields
def get_prepopulated_fields(self, request, obj=None):
"""
Hook for specifying custom prepopulated fields.
"""
return self.prepopulated_fields
def get_queryset(self, request):
"""
Return a QuerySet of all model instances that can be edited by the
admin site. This is used by changelist_view.
"""
qs = self.model._default_manager.get_queryset()
# TODO: this should be handled by some parameter to the ChangeList.
ordering = self.get_ordering(request)
if ordering:
qs = qs.order_by(*ordering)
return qs
def get_sortable_by(self, request):
"""Hook for specifying which fields can be sorted in the changelist."""
return self.sortable_by if self.sortable_by is not None else self.get_list_display(request)
def lookup_allowed(self, lookup, value):
from django.contrib.admin.filters import SimpleListFilter
model = self.model
# Check FKey lookups that are allowed, so that popups produced by
# ForeignKeyRawIdWidget, on the basis of ForeignKey.limit_choices_to,
# are allowed to work.
for fk_lookup in model._meta.related_fkey_lookups:
# As ``limit_choices_to`` can be a callable, invoke it here.
if callable(fk_lookup):
fk_lookup = fk_lookup()
if (lookup, value) in widgets.url_params_from_lookup_dict(fk_lookup).items():
return True
relation_parts = []
prev_field = None
for part in lookup.split(LOOKUP_SEP):
try:
field = model._meta.get_field(part)
except FieldDoesNotExist:
# Lookups on nonexistent fields are ok, since they're ignored
# later.
break
# It is allowed to filter on values that would be found from local
# model anyways. For example, if you filter on employee__department__id,
# then the id value would be found already from employee__department_id.
if not prev_field or (prev_field.is_relation and
field not in prev_field.path_infos[-1].target_fields):
relation_parts.append(part)
if not getattr(field, 'path_infos', None):
# This is not a relational field, so further parts
# must be transforms.
break
prev_field = field
model = field.path_infos[-1].to_opts.model
if len(relation_parts) <= 1:
# Either a local field filter, or no fields at all.
return True
valid_lookups = {self.date_hierarchy}
for filter_item in self.list_filter:
if isinstance(filter_item, type) and issubclass(filter_item, SimpleListFilter):
valid_lookups.add(filter_item.parameter_name)
elif isinstance(filter_item, (list, tuple)):
valid_lookups.add(filter_item[0])
else:
valid_lookups.add(filter_item)
# Is it a valid relational lookup?
return not {
LOOKUP_SEP.join(relation_parts),
LOOKUP_SEP.join(relation_parts + [part])
}.isdisjoint(valid_lookups)
def to_field_allowed(self, request, to_field):
"""
Return True if the model associated with this admin should be
allowed to be referenced by the specified field.
"""
opts = self.model._meta
try:
field = opts.get_field(to_field)
except FieldDoesNotExist:
return False
# Always allow referencing the primary key since it's already possible
# to get this information from the change view URL.
if field.primary_key:
return True
# Allow reverse relationships to models defining m2m fields if they
# target the specified field.
for many_to_many in opts.many_to_many:
if many_to_many.m2m_target_field_name() == to_field:
return True
# Make sure at least one of the models registered for this site
# references this field through a FK or a M2M relationship.
registered_models = set()
for model, admin in self.admin_site._registry.items():
registered_models.add(model)
for inline in admin.inlines:
registered_models.add(inline.model)
related_objects = (
f for f in opts.get_fields(include_hidden=True)
if (f.auto_created and not f.concrete)
)
for related_object in related_objects:
related_model = related_object.related_model
remote_field = related_object.field.remote_field
if (any(issubclass(model, related_model) for model in registered_models) and
hasattr(remote_field, 'get_related_field') and
remote_field.get_related_field() == field):
return True
return False
def has_add_permission(self, request):
"""
Return True if the given request has permission to add an object.
Can be overridden by the user in subclasses.
"""
opts = self.opts
codename = get_permission_codename('add', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_change_permission(self, request, obj=None):
"""
Return True if the given request has permission to change the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to change the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to change *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename('change', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_delete_permission(self, request, obj=None):
"""
Return True if the given request has permission to change the given
Django model instance, the default implementation doesn't examine the
`obj` parameter.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to delete the `obj`
model instance. If `obj` is None, this should return True if the given
request has permission to delete *any* object of the given type.
"""
opts = self.opts
codename = get_permission_codename('delete', opts)
return request.user.has_perm("%s.%s" % (opts.app_label, codename))
def has_view_permission(self, request, obj=None):
"""
Return True if the given request has permission to view the given
Django model instance. The default implementation doesn't examine the
`obj` parameter.
If overridden by the user in subclasses, it should return True if the
given request has permission to view the `obj` model instance. If `obj`
is None, it should return True if the request has permission to view
any object of the given type.
"""
opts = self.opts
codename_view = get_permission_codename('view', opts)
codename_change = get_permission_codename('change', opts)
return (
request.user.has_perm('%s.%s' % (opts.app_label, codename_view)) or
request.user.has_perm('%s.%s' % (opts.app_label, codename_change))
)
def has_view_or_change_permission(self, request, obj=None):
return self.has_view_permission(request, obj) or self.has_change_permission(request, obj)
def has_module_permission(self, request):
"""
Return True if the given request has any permission in the given
app label.
Can be overridden by the user in subclasses. In such case it should
return True if the given request has permission to view the module on
the admin index page and access the module's index page. Overriding it
does not restrict access to the add, change or delete views. Use
`ModelAdmin.has_(add|change|delete)_permission` for that.
"""
return request.user.has_module_perms(self.opts.app_label)
class ModelAdmin(BaseModelAdmin):
"""Encapsulate all admin options and functionality for a given model."""
list_display = ('__str__',)
list_display_links = ()
list_filter = ()
list_select_related = False
list_per_page = 100
list_max_show_all = 200
list_editable = ()
search_fields = ()
search_help_text = None
date_hierarchy = None
save_as = False
save_as_continue = True
save_on_top = False
paginator = Paginator
preserve_filters = True
inlines = []
# Custom templates (designed to be over-ridden in subclasses)
add_form_template = None
change_form_template = None
change_list_template = None
delete_confirmation_template = None
delete_selected_confirmation_template = None
object_history_template = None
popup_response_template = None
# Actions
actions = []
action_form = helpers.ActionForm
actions_on_top = True
actions_on_bottom = False
actions_selection_counter = True
checks_class = ModelAdminChecks
def __init__(self, model, admin_site):
self.model = model
self.opts = model._meta
self.admin_site = admin_site
super().__init__()
def __str__(self):
return "%s.%s" % (self.model._meta.app_label, self.__class__.__name__)
def __repr__(self):
return (
f'<{self.__class__.__qualname__}: model={self.model.__qualname__} '
f'site={self.admin_site!r}>'
)
def get_inline_instances(self, request, obj=None):
inline_instances = []
for inline_class in self.get_inlines(request, obj):
inline = inline_class(self.model, self.admin_site)
if request:
if not (inline.has_view_or_change_permission(request, obj) or
inline.has_add_permission(request, obj) or
inline.has_delete_permission(request, obj)):
continue
if not inline.has_add_permission(request, obj):
inline.max_num = 0
inline_instances.append(inline)
return inline_instances
def get_urls(self):
from django.urls import path
def wrap(view):
def wrapper(*args, **kwargs):
return self.admin_site.admin_view(view)(*args, **kwargs)
wrapper.model_admin = self
return update_wrapper(wrapper, view)
info = self.model._meta.app_label, self.model._meta.model_name
return [
path('', wrap(self.changelist_view), name='%s_%s_changelist' % info),
path('add/', wrap(self.add_view), name='%s_%s_add' % info),
path('<path:object_id>/history/', wrap(self.history_view), name='%s_%s_history' % info),
path('<path:object_id>/delete/', wrap(self.delete_view), name='%s_%s_delete' % info),
path('<path:object_id>/change/', wrap(self.change_view), name='%s_%s_change' % info),
# For backwards compatibility (was the change url before 1.9)
path('<path:object_id>/', wrap(RedirectView.as_view(
pattern_name='%s:%s_%s_change' % ((self.admin_site.name,) + info)
))),
]
@property
def urls(self):
return self.get_urls()
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = [
'vendor/jquery/jquery%s.js' % extra,
'jquery.init.js',
'core.js',
'admin/RelatedObjectLookups.js',
'actions.js',
'urlify.js',
'prepopulate.js',
'vendor/xregexp/xregexp%s.js' % extra,
]
return forms.Media(js=['admin/js/%s' % url for url in js])
def get_model_perms(self, request):
"""
Return a dict of all perms for this model. This dict has the keys
``add``, ``change``, ``delete``, and ``view`` mapping to the True/False
for each of those actions.
"""
return {
'add': self.has_add_permission(request),
'change': self.has_change_permission(request),
'delete': self.has_delete_permission(request),
'view': self.has_view_permission(request),
}
def _get_form_for_get_fields(self, request, obj):
return self.get_form(request, obj, fields=None)
def get_form(self, request, obj=None, change=False, **kwargs):
"""
Return a Form class for use in the admin add view. This is used by
add_view and change_view.
"""
if 'fields' in kwargs:
fields = kwargs.pop('fields')
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
excluded = self.get_exclude(request, obj)
exclude = [] if excluded is None else list(excluded)
readonly_fields = self.get_readonly_fields(request, obj)
exclude.extend(readonly_fields)
# Exclude all fields if it's a change form and the user doesn't have
# the change permission.
if change and hasattr(request, 'user') and not self.has_change_permission(request, obj):
exclude.extend(fields)
if excluded is None and hasattr(self.form, '_meta') and self.form._meta.exclude:
# Take the custom ModelForm's Meta.exclude into account only if the
# ModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
# if exclude is an empty list we pass None to be consistent with the
# default on modelform_factory
exclude = exclude or None
# Remove declared form fields which are in readonly_fields.
new_attrs = dict.fromkeys(f for f in readonly_fields if f in self.form.declared_fields)
form = type(self.form.__name__, (self.form,), new_attrs)
defaults = {
'form': form,
'fields': fields,
'exclude': exclude,
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
if defaults['fields'] is None and not modelform_defines_fields(defaults['form']):
defaults['fields'] = forms.ALL_FIELDS
try:
return modelform_factory(self.model, **defaults)
except FieldError as e:
raise FieldError(
'%s. Check fields/fieldsets/exclude attributes of class %s.'
% (e, self.__class__.__name__)
)
def get_changelist(self, request, **kwargs):
"""
Return the ChangeList class for use on the changelist page.
"""
from django.contrib.admin.views.main import ChangeList
return ChangeList
def get_changelist_instance(self, request):
"""
Return a `ChangeList` instance based on `request`. May raise
`IncorrectLookupParameters`.
"""
list_display = self.get_list_display(request)
list_display_links = self.get_list_display_links(request, list_display)
# Add the action checkboxes if any actions are available.
if self.get_actions(request):
list_display = ['action_checkbox', *list_display]
sortable_by = self.get_sortable_by(request)
ChangeList = self.get_changelist(request)
return ChangeList(
request,
self.model,
list_display,
list_display_links,
self.get_list_filter(request),
self.date_hierarchy,
self.get_search_fields(request),
self.get_list_select_related(request),
self.list_per_page,
self.list_max_show_all,
self.list_editable,
self,
sortable_by,
self.search_help_text,
)
def get_object(self, request, object_id, from_field=None):
"""
Return an instance matching the field and value provided, the primary
key is used if no field is provided. Return ``None`` if no match is
found or the object_id fails validation.
"""
queryset = self.get_queryset(request)
model = queryset.model
field = model._meta.pk if from_field is None else model._meta.get_field(from_field)
try:
object_id = field.to_python(object_id)
return queryset.get(**{field.name: object_id})
except (model.DoesNotExist, ValidationError, ValueError):
return None
def get_changelist_form(self, request, **kwargs):
"""
Return a Form class for use in the Formset on the changelist page.
"""
defaults = {
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
if defaults.get('fields') is None and not modelform_defines_fields(defaults.get('form')):
defaults['fields'] = forms.ALL_FIELDS
return modelform_factory(self.model, **defaults)
def get_changelist_formset(self, request, **kwargs):
"""
Return a FormSet class for use on the changelist page if list_editable
is used.
"""
defaults = {
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
**kwargs,
}
return modelformset_factory(
self.model, self.get_changelist_form(request), extra=0,
fields=self.list_editable, **defaults
)
def get_formsets_with_inlines(self, request, obj=None):
"""
Yield formsets and the corresponding inlines.
"""
for inline in self.get_inline_instances(request, obj):
yield inline.get_formset(request, obj), inline
def get_paginator(self, request, queryset, per_page, orphans=0, allow_empty_first_page=True):
return self.paginator(queryset, per_page, orphans, allow_empty_first_page)
def log_addition(self, request, obj, message):
"""
Log that an object has been successfully added.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import ADDITION, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=str(obj),
action_flag=ADDITION,
change_message=message,
)
def log_change(self, request, obj, message):
"""
Log that an object has been successfully changed.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import CHANGE, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=str(obj),
action_flag=CHANGE,
change_message=message,
)
def log_deletion(self, request, obj, object_repr):
"""
Log that an object will be deleted. Note that this method must be
called before the deletion.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import DELETION, LogEntry
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(obj).pk,
object_id=obj.pk,
object_repr=object_repr,
action_flag=DELETION,
)
@display(description=mark_safe('<input type="checkbox" id="action-toggle">'))
def action_checkbox(self, obj):
"""
A list_display column containing a checkbox widget.
"""
return helpers.checkbox.render(helpers.ACTION_CHECKBOX_NAME, str(obj.pk))
@staticmethod
def _get_action_description(func, name):
return getattr(func, 'short_description', capfirst(name.replace('_', ' ')))
def _get_base_actions(self):
"""Return the list of actions, prior to any request-based filtering."""
actions = []
base_actions = (self.get_action(action) for action in self.actions or [])
# get_action might have returned None, so filter any of those out.
base_actions = [action for action in base_actions if action]
base_action_names = {name for _, name, _ in base_actions}
# Gather actions from the admin site first
for (name, func) in self.admin_site.actions:
if name in base_action_names:
continue
description = self._get_action_description(func, name)
actions.append((func, name, description))
# Add actions from this ModelAdmin.
actions.extend(base_actions)
return actions
def _filter_actions_by_permissions(self, request, actions):
"""Filter out any actions that the user doesn't have access to."""
filtered_actions = []
for action in actions:
callable = action[0]
if not hasattr(callable, 'allowed_permissions'):
filtered_actions.append(action)
continue
permission_checks = (
getattr(self, 'has_%s_permission' % permission)
for permission in callable.allowed_permissions
)
if any(has_permission(request) for has_permission in permission_checks):
filtered_actions.append(action)
return filtered_actions
def get_actions(self, request):
"""
Return a dictionary mapping the names of all actions for this
ModelAdmin to a tuple of (callable, name, description) for each action.
"""
# If self.actions is set to None that means actions are disabled on
# this page.
if self.actions is None or IS_POPUP_VAR in request.GET:
return {}
actions = self._filter_actions_by_permissions(request, self._get_base_actions())
return {name: (func, name, desc) for func, name, desc in actions}
def get_action_choices(self, request, default_choices=models.BLANK_CHOICE_DASH):
"""
Return a list of choices for use in a form object. Each choice is a
tuple (name, description).
"""
choices = [] + default_choices
for func, name, description in self.get_actions(request).values():
choice = (name, description % model_format_dict(self.opts))
choices.append(choice)
return choices
def get_action(self, action):
"""
Return a given action from a parameter, which can either be a callable,
or the name of a method on the ModelAdmin. Return is a tuple of
(callable, name, description).
"""
# If the action is a callable, just use it.
if callable(action):
func = action
action = action.__name__
# Next, look for a method. Grab it off self.__class__ to get an unbound
# method instead of a bound one; this ensures that the calling
# conventions are the same for functions and methods.
elif hasattr(self.__class__, action):
func = getattr(self.__class__, action)
# Finally, look for a named method on the admin site
else:
try:
func = self.admin_site.get_action(action)
except KeyError:
return None
description = self._get_action_description(func, action)
return func, action, description
def get_list_display(self, request):
"""
Return a sequence containing the fields to be displayed on the
changelist.
"""
return self.list_display
def get_list_display_links(self, request, list_display):
"""
Return a sequence containing the fields to be displayed as links
on the changelist. The list_display parameter is the list of fields
returned by get_list_display().
"""
if self.list_display_links or self.list_display_links is None or not list_display:
return self.list_display_links
else:
# Use only the first item in list_display as link
return list(list_display)[:1]
def get_list_filter(self, request):
"""
Return a sequence containing the fields to be displayed as filters in
the right sidebar of the changelist page.
"""
return self.list_filter
def get_list_select_related(self, request):
"""
Return a list of fields to add to the select_related() part of the
changelist items query.
"""
return self.list_select_related
def get_search_fields(self, request):
"""
Return a sequence containing the fields to be searched whenever
somebody submits a search query.
"""
return self.search_fields
def get_search_results(self, request, queryset, search_term):
"""
Return a tuple containing a queryset to implement the search
and a boolean indicating if the results may contain duplicates.
"""
# Apply keyword searches.
def construct_search(field_name):
if field_name.startswith('^'):
return "%s__istartswith" % field_name[1:]
elif field_name.startswith('='):
return "%s__iexact" % field_name[1:]
elif field_name.startswith('@'):
return "%s__search" % field_name[1:]
# Use field_name if it includes a lookup.
opts = queryset.model._meta
lookup_fields = field_name.split(LOOKUP_SEP)
# Go through the fields, following all relations.
prev_field = None
for path_part in lookup_fields:
if path_part == 'pk':
path_part = opts.pk.name
try:
field = opts.get_field(path_part)
except FieldDoesNotExist:
# Use valid query lookups.
if prev_field and prev_field.get_lookup(path_part):
return field_name
else:
prev_field = field
if hasattr(field, 'path_infos'):
# Update opts to follow the relation.
opts = field.path_infos[-1].to_opts
# Otherwise, use the field with icontains.
return "%s__icontains" % field_name
may_have_duplicates = False
search_fields = self.get_search_fields(request)
if search_fields and search_term:
orm_lookups = [construct_search(str(search_field))
for search_field in search_fields]
for bit in smart_split(search_term):
if bit.startswith(('"', "'")) and bit[0] == bit[-1]:
bit = unescape_string_literal(bit)
or_queries = models.Q(
*((orm_lookup, bit) for orm_lookup in orm_lookups),
_connector=models.Q.OR,
)
queryset = queryset.filter(or_queries)
may_have_duplicates |= any(
lookup_spawns_duplicates(self.opts, search_spec)
for search_spec in orm_lookups
)
return queryset, may_have_duplicates
def get_preserved_filters(self, request):
"""
Return the preserved filters querystring.
"""
match = request.resolver_match
if self.preserve_filters and match:
opts = self.model._meta
current_url = '%s:%s' % (match.app_name, match.url_name)
changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name)
if current_url == changelist_url:
preserved_filters = request.GET.urlencode()
else:
preserved_filters = request.GET.get('_changelist_filters')
if preserved_filters:
return urlencode({'_changelist_filters': preserved_filters})
return ''
def construct_change_message(self, request, form, formsets, add=False):
"""
Construct a JSON structure describing changes from a changed object.
"""
return construct_change_message(form, formsets, add)
def message_user(self, request, message, level=messages.INFO, extra_tags='',
fail_silently=False):
"""
Send a message to the user. The default implementation
posts a message using the django.contrib.messages backend.
Exposes almost the same API as messages.add_message(), but accepts the
positional arguments in a different order to maintain backwards
compatibility. For convenience, it accepts the `level` argument as
a string rather than the usual level number.
"""
if not isinstance(level, int):
# attempt to get the level if passed a string
try:
level = getattr(messages.constants, level.upper())
except AttributeError:
levels = messages.constants.DEFAULT_TAGS.values()
levels_repr = ', '.join('`%s`' % level for level in levels)
raise ValueError(
'Bad message level string: `%s`. Possible values are: %s'
% (level, levels_repr)
)
messages.add_message(request, level, message, extra_tags=extra_tags, fail_silently=fail_silently)
def save_form(self, request, form, change):
"""
Given a ModelForm return an unsaved instance. ``change`` is True if
the object is being changed, and False if it's being added.
"""
return form.save(commit=False)
def save_model(self, request, obj, form, change):
"""
Given a model instance save it to the database.
"""
obj.save()
def delete_model(self, request, obj):
"""
Given a model instance delete it from the database.
"""
obj.delete()
def delete_queryset(self, request, queryset):
"""Given a queryset, delete it from the database."""
queryset.delete()
def save_formset(self, request, form, formset, change):
"""
Given an inline formset save it to the database.
"""
formset.save()
def save_related(self, request, form, formsets, change):
"""
Given the ``HttpRequest``, the parent ``ModelForm`` instance, the
list of inline formsets and a boolean value based on whether the
parent is being added or changed, save the related objects to the
database. Note that at this point save_form() and save_model() have
already been called.
"""
form.save_m2m()
for formset in formsets:
self.save_formset(request, form, formset, change=change)
def render_change_form(self, request, context, add=False, change=False, form_url='', obj=None):
opts = self.model._meta
app_label = opts.app_label
preserved_filters = self.get_preserved_filters(request)
form_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, form_url)
view_on_site_url = self.get_view_on_site_url(obj)
has_editable_inline_admin_formsets = False
for inline in context['inline_admin_formsets']:
if inline.has_add_permission or inline.has_change_permission or inline.has_delete_permission:
has_editable_inline_admin_formsets = True
break
context.update({
'add': add,
'change': change,
'has_view_permission': self.has_view_permission(request, obj),
'has_add_permission': self.has_add_permission(request),
'has_change_permission': self.has_change_permission(request, obj),
'has_delete_permission': self.has_delete_permission(request, obj),
'has_editable_inline_admin_formsets': has_editable_inline_admin_formsets,
'has_file_field': context['adminform'].form.is_multipart() or any(
admin_formset.formset.is_multipart()
for admin_formset in context['inline_admin_formsets']
),
'has_absolute_url': view_on_site_url is not None,
'absolute_url': view_on_site_url,
'form_url': form_url,
'opts': opts,
'content_type_id': get_content_type_for_model(self.model).pk,
'save_as': self.save_as,
'save_on_top': self.save_on_top,
'to_field_var': TO_FIELD_VAR,
'is_popup_var': IS_POPUP_VAR,
'app_label': app_label,
})
if add and self.add_form_template is not None:
form_template = self.add_form_template
else:
form_template = self.change_form_template
request.current_app = self.admin_site.name
return TemplateResponse(request, form_template or [
"admin/%s/%s/change_form.html" % (app_label, opts.model_name),
"admin/%s/change_form.html" % app_label,
"admin/change_form.html"
], context)
def response_add(self, request, obj, post_url_continue=None):
"""
Determine the HttpResponse for the add_view stage.
"""
opts = obj._meta
preserved_filters = self.get_preserved_filters(request)
obj_url = reverse(
'admin:%s_%s_change' % (opts.app_label, opts.model_name),
args=(quote(obj.pk),),
current_app=self.admin_site.name,
)
# Add a link to the object's change form if the user can edit the obj.
if self.has_change_permission(request, obj):
obj_repr = format_html('<a href="{}">{}</a>', urlquote(obj_url), obj)
else:
obj_repr = str(obj)
msg_dict = {
'name': opts.verbose_name,
'obj': obj_repr,
}
# Here, we distinguish between different save types by checking for
# the presence of keys in request.POST.
if IS_POPUP_VAR in request.POST:
to_field = request.POST.get(TO_FIELD_VAR)
if to_field:
attr = str(to_field)
else:
attr = obj._meta.pk.attname
value = obj.serializable_value(attr)
popup_response_data = json.dumps({
'value': str(value),
'obj': str(obj),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
elif "_continue" in request.POST or (
# Redirecting after "Save as new".
"_saveasnew" in request.POST and self.save_as_continue and
self.has_change_permission(request, obj)
):
msg = _('The {name} “{obj}” was added successfully.')
if self.has_change_permission(request, obj):
msg += ' ' + _('You may edit it again below.')
self.message_user(request, format_html(msg, **msg_dict), messages.SUCCESS)
if post_url_continue is None:
post_url_continue = obj_url
post_url_continue = add_preserved_filters(
{'preserved_filters': preserved_filters, 'opts': opts},
post_url_continue
)
return HttpResponseRedirect(post_url_continue)
elif "_addanother" in request.POST:
msg = format_html(
_('The {name} “{obj}” was added successfully. You may add another {name} below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = request.path
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
else:
msg = format_html(
_('The {name} “{obj}” was added successfully.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
return self.response_post_save_add(request, obj)
def response_change(self, request, obj):
"""
Determine the HttpResponse for the change_view stage.
"""
if IS_POPUP_VAR in request.POST:
opts = obj._meta
to_field = request.POST.get(TO_FIELD_VAR)
attr = str(to_field) if to_field else opts.pk.attname
value = request.resolver_match.kwargs['object_id']
new_value = obj.serializable_value(attr)
popup_response_data = json.dumps({
'action': 'change',
'value': str(value),
'obj': str(obj),
'new_value': str(new_value),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
opts = self.model._meta
preserved_filters = self.get_preserved_filters(request)
msg_dict = {
'name': opts.verbose_name,
'obj': format_html('<a href="{}">{}</a>', urlquote(request.path), obj),
}
if "_continue" in request.POST:
msg = format_html(
_('The {name} “{obj}” was changed successfully. You may edit it again below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = request.path
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
elif "_saveasnew" in request.POST:
msg = format_html(
_('The {name} “{obj}” was added successfully. You may edit it again below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = reverse('admin:%s_%s_change' %
(opts.app_label, opts.model_name),
args=(obj.pk,),
current_app=self.admin_site.name)
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
elif "_addanother" in request.POST:
msg = format_html(
_('The {name} “{obj}” was changed successfully. You may add another {name} below.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
redirect_url = reverse('admin:%s_%s_add' %
(opts.app_label, opts.model_name),
current_app=self.admin_site.name)
redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url)
return HttpResponseRedirect(redirect_url)
else:
msg = format_html(
_('The {name} “{obj}” was changed successfully.'),
**msg_dict
)
self.message_user(request, msg, messages.SUCCESS)
return self.response_post_save_change(request, obj)
def _response_post_save(self, request, obj):
opts = self.model._meta
if self.has_view_or_change_permission(request):
post_url = reverse('admin:%s_%s_changelist' %
(opts.app_label, opts.model_name),
current_app=self.admin_site.name)
preserved_filters = self.get_preserved_filters(request)
post_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, post_url)
else:
post_url = reverse('admin:index',
current_app=self.admin_site.name)
return HttpResponseRedirect(post_url)
def response_post_save_add(self, request, obj):
"""
Figure out where to redirect after the 'Save' button has been pressed
when adding a new object.
"""
return self._response_post_save(request, obj)
def response_post_save_change(self, request, obj):
"""
Figure out where to redirect after the 'Save' button has been pressed
when editing an existing object.
"""
return self._response_post_save(request, obj)
def response_action(self, request, queryset):
"""
Handle an admin action. This is called if a request is POSTed to the
changelist; it returns an HttpResponse if the action was handled, and
None otherwise.
"""
# There can be multiple action forms on the page (at the top
# and bottom of the change list, for example). Get the action
# whose button was pushed.
try:
action_index = int(request.POST.get('index', 0))
except ValueError:
action_index = 0
# Construct the action form.
data = request.POST.copy()
data.pop(helpers.ACTION_CHECKBOX_NAME, None)
data.pop("index", None)
# Use the action whose button was pushed
try:
data.update({'action': data.getlist('action')[action_index]})
except IndexError:
# If we didn't get an action from the chosen form that's invalid
# POST data, so by deleting action it'll fail the validation check
# below. So no need to do anything here
pass
action_form = self.action_form(data, auto_id=None)
action_form.fields['action'].choices = self.get_action_choices(request)
# If the form's valid we can handle the action.
if action_form.is_valid():
action = action_form.cleaned_data['action']
select_across = action_form.cleaned_data['select_across']
func = self.get_actions(request)[action][0]
# Get the list of selected PKs. If nothing's selected, we can't
# perform an action on it, so bail. Except we want to perform
# the action explicitly on all objects.
selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME)
if not selected and not select_across:
# Reminder that something needs to be selected or nothing will happen
msg = _("Items must be selected in order to perform "
"actions on them. No items have been changed.")
self.message_user(request, msg, messages.WARNING)
return None
if not select_across:
# Perform the action only on the selected objects
queryset = queryset.filter(pk__in=selected)
response = func(self, request, queryset)
# Actions may return an HttpResponse-like object, which will be
# used as the response from the POST. If not, we'll be a good
# little HTTP citizen and redirect back to the changelist page.
if isinstance(response, HttpResponseBase):
return response
else:
return HttpResponseRedirect(request.get_full_path())
else:
msg = _("No action selected.")
self.message_user(request, msg, messages.WARNING)
return None
def response_delete(self, request, obj_display, obj_id):
"""
Determine the HttpResponse for the delete_view stage.
"""
opts = self.model._meta
if IS_POPUP_VAR in request.POST:
popup_response_data = json.dumps({
'action': 'delete',
'value': str(obj_id),
})
return TemplateResponse(request, self.popup_response_template or [
'admin/%s/%s/popup_response.html' % (opts.app_label, opts.model_name),
'admin/%s/popup_response.html' % opts.app_label,
'admin/popup_response.html',
], {
'popup_response_data': popup_response_data,
})
self.message_user(
request,
_('The %(name)s “%(obj)s” was deleted successfully.') % {
'name': opts.verbose_name,
'obj': obj_display,
},
messages.SUCCESS,
)
if self.has_change_permission(request, None):
post_url = reverse(
'admin:%s_%s_changelist' % (opts.app_label, opts.model_name),
current_app=self.admin_site.name,
)
preserved_filters = self.get_preserved_filters(request)
post_url = add_preserved_filters(
{'preserved_filters': preserved_filters, 'opts': opts}, post_url
)
else:
post_url = reverse('admin:index', current_app=self.admin_site.name)
return HttpResponseRedirect(post_url)
def render_delete_form(self, request, context):
opts = self.model._meta
app_label = opts.app_label
request.current_app = self.admin_site.name
context.update(
to_field_var=TO_FIELD_VAR,
is_popup_var=IS_POPUP_VAR,
media=self.media,
)
return TemplateResponse(
request,
self.delete_confirmation_template or [
"admin/{}/{}/delete_confirmation.html".format(app_label, opts.model_name),
"admin/{}/delete_confirmation.html".format(app_label),
"admin/delete_confirmation.html",
],
context,
)
def get_inline_formsets(self, request, formsets, inline_instances, obj=None):
# Edit permissions on parent model are required for editable inlines.
can_edit_parent = self.has_change_permission(request, obj) if obj else self.has_add_permission(request)
inline_admin_formsets = []
for inline, formset in zip(inline_instances, formsets):
fieldsets = list(inline.get_fieldsets(request, obj))
readonly = list(inline.get_readonly_fields(request, obj))
if can_edit_parent:
has_add_permission = inline.has_add_permission(request, obj)
has_change_permission = inline.has_change_permission(request, obj)
has_delete_permission = inline.has_delete_permission(request, obj)
else:
# Disable all edit-permissions, and overide formset settings.
has_add_permission = has_change_permission = has_delete_permission = False
formset.extra = formset.max_num = 0
has_view_permission = inline.has_view_permission(request, obj)
prepopulated = dict(inline.get_prepopulated_fields(request, obj))
inline_admin_formset = helpers.InlineAdminFormSet(
inline, formset, fieldsets, prepopulated, readonly, model_admin=self,
has_add_permission=has_add_permission, has_change_permission=has_change_permission,
has_delete_permission=has_delete_permission, has_view_permission=has_view_permission,
)
inline_admin_formsets.append(inline_admin_formset)
return inline_admin_formsets
def get_changeform_initial_data(self, request):
"""
Get the initial form data from the request's GET params.
"""
initial = dict(request.GET.items())
for k in initial:
try:
f = self.model._meta.get_field(k)
except FieldDoesNotExist:
continue
# We have to special-case M2Ms as a list of comma-separated PKs.
if isinstance(f, models.ManyToManyField):
initial[k] = initial[k].split(",")
return initial
def _get_obj_does_not_exist_redirect(self, request, opts, object_id):
"""
Create a message informing the user that the object doesn't exist
and return a redirect to the admin index page.
"""
msg = _('%(name)s with ID “%(key)s” doesn’t exist. Perhaps it was deleted?') % {
'name': opts.verbose_name,
'key': unquote(object_id),
}
self.message_user(request, msg, messages.WARNING)
url = reverse('admin:index', current_app=self.admin_site.name)
return HttpResponseRedirect(url)
@csrf_protect_m
def changeform_view(self, request, object_id=None, form_url='', extra_context=None):
with transaction.atomic(using=router.db_for_write(self.model)):
return self._changeform_view(request, object_id, form_url, extra_context)
def _changeform_view(self, request, object_id, form_url, extra_context):
to_field = request.POST.get(TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR))
if to_field and not self.to_field_allowed(request, to_field):
raise DisallowedModelAdminToField("The field %s cannot be referenced." % to_field)
model = self.model
opts = model._meta
if request.method == 'POST' and '_saveasnew' in request.POST:
object_id = None
add = object_id is None
if add:
if not self.has_add_permission(request):
raise PermissionDenied
obj = None
else:
obj = self.get_object(request, unquote(object_id), to_field)
if request.method == 'POST':
if not self.has_change_permission(request, obj):
raise PermissionDenied
else:
if not self.has_view_or_change_permission(request, obj):
raise PermissionDenied
if obj is None:
return self._get_obj_does_not_exist_redirect(request, opts, object_id)
fieldsets = self.get_fieldsets(request, obj)
ModelForm = self.get_form(
request, obj, change=not add, fields=flatten_fieldsets(fieldsets)
)
if request.method == 'POST':
form = ModelForm(request.POST, request.FILES, instance=obj)
formsets, inline_instances = self._create_formsets(
request,
form.instance if add else obj,
change=not add,
)
form_validated = form.is_valid()
if form_validated:
new_object = self.save_form(request, form, change=not add)
else:
new_object = form.instance
if all_valid(formsets) and form_validated:
self.save_model(request, new_object, form, not add)
self.save_related(request, form, formsets, not add)
change_message = self.construct_change_message(request, form, formsets, add)
if add:
self.log_addition(request, new_object, change_message)
return self.response_add(request, new_object)
else:
self.log_change(request, new_object, change_message)
return self.response_change(request, new_object)
else:
form_validated = False
else:
if add:
initial = self.get_changeform_initial_data(request)
form = ModelForm(initial=initial)
formsets, inline_instances = self._create_formsets(request, form.instance, change=False)
else:
form = ModelForm(instance=obj)
formsets, inline_instances = self._create_formsets(request, obj, change=True)
if not add and not self.has_change_permission(request, obj):
readonly_fields = flatten_fieldsets(fieldsets)
else:
readonly_fields = self.get_readonly_fields(request, obj)
adminForm = helpers.AdminForm(
form,
list(fieldsets),
# Clear prepopulated fields on a view-only form to avoid a crash.
self.get_prepopulated_fields(request, obj) if add or self.has_change_permission(request, obj) else {},
readonly_fields,
model_admin=self)
media = self.media + adminForm.media
inline_formsets = self.get_inline_formsets(request, formsets, inline_instances, obj)
for inline_formset in inline_formsets:
media = media + inline_formset.media
if add:
title = _('Add %s')
elif self.has_change_permission(request, obj):
title = _('Change %s')
else:
title = _('View %s')
context = {
**self.admin_site.each_context(request),
'title': title % opts.verbose_name,
'subtitle': str(obj) if obj else None,
'adminform': adminForm,
'object_id': object_id,
'original': obj,
'is_popup': IS_POPUP_VAR in request.POST or IS_POPUP_VAR in request.GET,
'to_field': to_field,
'media': media,
'inline_admin_formsets': inline_formsets,
'errors': helpers.AdminErrorList(form, formsets),
'preserved_filters': self.get_preserved_filters(request),
}
# Hide the "Save" and "Save and continue" buttons if "Save as New" was
# previously chosen to prevent the interface from getting confusing.
if request.method == 'POST' and not form_validated and "_saveasnew" in request.POST:
context['show_save'] = False
context['show_save_and_continue'] = False
# Use the change template instead of the add template.
add = False
context.update(extra_context or {})
return self.render_change_form(request, context, add=add, change=not add, obj=obj, form_url=form_url)
def add_view(self, request, form_url='', extra_context=None):
return self.changeform_view(request, None, form_url, extra_context)
def change_view(self, request, object_id, form_url='', extra_context=None):
return self.changeform_view(request, object_id, form_url, extra_context)
def _get_edited_object_pks(self, request, prefix):
"""Return POST data values of list_editable primary keys."""
pk_pattern = re.compile(
r'{}-\d+-{}$'.format(re.escape(prefix), self.model._meta.pk.name)
)
return [value for key, value in request.POST.items() if pk_pattern.match(key)]
def _get_list_editable_queryset(self, request, prefix):
"""
Based on POST data, return a queryset of the objects that were edited
via list_editable.
"""
object_pks = self._get_edited_object_pks(request, prefix)
queryset = self.get_queryset(request)
validate = queryset.model._meta.pk.to_python
try:
for pk in object_pks:
validate(pk)
except ValidationError:
# Disable the optimization if the POST data was tampered with.
return queryset
return queryset.filter(pk__in=object_pks)
@csrf_protect_m
def changelist_view(self, request, extra_context=None):
"""
The 'change list' admin view for this model.
"""
from django.contrib.admin.views.main import ERROR_FLAG
opts = self.model._meta
app_label = opts.app_label
if not self.has_view_or_change_permission(request):
raise PermissionDenied
try:
cl = self.get_changelist_instance(request)
except IncorrectLookupParameters:
# Wacky lookup parameters were given, so redirect to the main
# changelist page, without parameters, and pass an 'invalid=1'
# parameter via the query string. If wacky parameters were given
# and the 'invalid=1' parameter was already in the query string,
# something is screwed up with the database, so display an error
# page.
if ERROR_FLAG in request.GET:
return SimpleTemplateResponse('admin/invalid_setup.html', {
'title': _('Database error'),
})
return HttpResponseRedirect(request.path + '?' + ERROR_FLAG + '=1')
# If the request was POSTed, this might be a bulk action or a bulk
# edit. Try to look up an action or confirmation first, but if this
# isn't an action the POST will fall through to the bulk edit check,
# below.
action_failed = False
selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME)
actions = self.get_actions(request)
# Actions with no confirmation
if (actions and request.method == 'POST' and
'index' in request.POST and '_save' not in request.POST):
if selected:
response = self.response_action(request, queryset=cl.get_queryset(request))
if response:
return response
else:
action_failed = True
else:
msg = _("Items must be selected in order to perform "
"actions on them. No items have been changed.")
self.message_user(request, msg, messages.WARNING)
action_failed = True
# Actions with confirmation
if (actions and request.method == 'POST' and
helpers.ACTION_CHECKBOX_NAME in request.POST and
'index' not in request.POST and '_save' not in request.POST):
if selected:
response = self.response_action(request, queryset=cl.get_queryset(request))
if response:
return response
else:
action_failed = True
if action_failed:
# Redirect back to the changelist page to avoid resubmitting the
# form if the user refreshes the browser or uses the "No, take
# me back" button on the action confirmation page.
return HttpResponseRedirect(request.get_full_path())
# If we're allowing changelist editing, we need to construct a formset
# for the changelist given all the fields to be edited. Then we'll
# use the formset to validate/process POSTed data.
formset = cl.formset = None
# Handle POSTed bulk-edit data.
if request.method == 'POST' and cl.list_editable and '_save' in request.POST:
if not self.has_change_permission(request):
raise PermissionDenied
FormSet = self.get_changelist_formset(request)
modified_objects = self._get_list_editable_queryset(request, FormSet.get_default_prefix())
formset = cl.formset = FormSet(request.POST, request.FILES, queryset=modified_objects)
if formset.is_valid():
changecount = 0
for form in formset.forms:
if form.has_changed():
obj = self.save_form(request, form, change=True)
self.save_model(request, obj, form, change=True)
self.save_related(request, form, formsets=[], change=True)
change_msg = self.construct_change_message(request, form, None)
self.log_change(request, obj, change_msg)
changecount += 1
if changecount:
msg = ngettext(
"%(count)s %(name)s was changed successfully.",
"%(count)s %(name)s were changed successfully.",
changecount
) % {
'count': changecount,
'name': model_ngettext(opts, changecount),
}
self.message_user(request, msg, messages.SUCCESS)
return HttpResponseRedirect(request.get_full_path())
# Handle GET -- construct a formset for display.
elif cl.list_editable and self.has_change_permission(request):
FormSet = self.get_changelist_formset(request)
formset = cl.formset = FormSet(queryset=cl.result_list)
# Build the list of media to be used by the formset.
if formset:
media = self.media + formset.media
else:
media = self.media
# Build the action form and populate it with available actions.
if actions:
action_form = self.action_form(auto_id=None)
action_form.fields['action'].choices = self.get_action_choices(request)
media += action_form.media
else:
action_form = None
selection_note_all = ngettext(
'%(total_count)s selected',
'All %(total_count)s selected',
cl.result_count
)
context = {
**self.admin_site.each_context(request),
'module_name': str(opts.verbose_name_plural),
'selection_note': _('0 of %(cnt)s selected') % {'cnt': len(cl.result_list)},
'selection_note_all': selection_note_all % {'total_count': cl.result_count},
'title': cl.title,
'subtitle': None,
'is_popup': cl.is_popup,
'to_field': cl.to_field,
'cl': cl,
'media': media,
'has_add_permission': self.has_add_permission(request),
'opts': cl.opts,
'action_form': action_form,
'actions_on_top': self.actions_on_top,
'actions_on_bottom': self.actions_on_bottom,
'actions_selection_counter': self.actions_selection_counter,
'preserved_filters': self.get_preserved_filters(request),
**(extra_context or {}),
}
request.current_app = self.admin_site.name
return TemplateResponse(request, self.change_list_template or [
'admin/%s/%s/change_list.html' % (app_label, opts.model_name),
'admin/%s/change_list.html' % app_label,
'admin/change_list.html'
], context)
def get_deleted_objects(self, objs, request):
"""
Hook for customizing the delete process for the delete view and the
"delete selected" action.
"""
return get_deleted_objects(objs, request, self.admin_site)
@csrf_protect_m
def delete_view(self, request, object_id, extra_context=None):
with transaction.atomic(using=router.db_for_write(self.model)):
return self._delete_view(request, object_id, extra_context)
def _delete_view(self, request, object_id, extra_context):
"The 'delete' admin view for this model."
opts = self.model._meta
app_label = opts.app_label
to_field = request.POST.get(TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR))
if to_field and not self.to_field_allowed(request, to_field):
raise DisallowedModelAdminToField("The field %s cannot be referenced." % to_field)
obj = self.get_object(request, unquote(object_id), to_field)
if not self.has_delete_permission(request, obj):
raise PermissionDenied
if obj is None:
return self._get_obj_does_not_exist_redirect(request, opts, object_id)
# Populate deleted_objects, a data structure of all related objects that
# will also be deleted.
deleted_objects, model_count, perms_needed, protected = self.get_deleted_objects([obj], request)
if request.POST and not protected: # The user has confirmed the deletion.
if perms_needed:
raise PermissionDenied
obj_display = str(obj)
attr = str(to_field) if to_field else opts.pk.attname
obj_id = obj.serializable_value(attr)
self.log_deletion(request, obj, obj_display)
self.delete_model(request, obj)
return self.response_delete(request, obj_display, obj_id)
object_name = str(opts.verbose_name)
if perms_needed or protected:
title = _("Cannot delete %(name)s") % {"name": object_name}
else:
title = _("Are you sure?")
context = {
**self.admin_site.each_context(request),
'title': title,
'subtitle': None,
'object_name': object_name,
'object': obj,
'deleted_objects': deleted_objects,
'model_count': dict(model_count).items(),
'perms_lacking': perms_needed,
'protected': protected,
'opts': opts,
'app_label': app_label,
'preserved_filters': self.get_preserved_filters(request),
'is_popup': IS_POPUP_VAR in request.POST or IS_POPUP_VAR in request.GET,
'to_field': to_field,
**(extra_context or {}),
}
return self.render_delete_form(request, context)
def history_view(self, request, object_id, extra_context=None):
"The 'history' admin view for this model."
from django.contrib.admin.models import LogEntry
# First check if the user can see this history.
model = self.model
obj = self.get_object(request, unquote(object_id))
if obj is None:
return self._get_obj_does_not_exist_redirect(request, model._meta, object_id)
if not self.has_view_or_change_permission(request, obj):
raise PermissionDenied
# Then get the history for this object.
opts = model._meta
app_label = opts.app_label
action_list = LogEntry.objects.filter(
object_id=unquote(object_id),
content_type=get_content_type_for_model(model)
).select_related().order_by('action_time')
context = {
**self.admin_site.each_context(request),
'title': _('Change history: %s') % obj,
'subtitle': None,
'action_list': action_list,
'module_name': str(capfirst(opts.verbose_name_plural)),
'object': obj,
'opts': opts,
'preserved_filters': self.get_preserved_filters(request),
**(extra_context or {}),
}
request.current_app = self.admin_site.name
return TemplateResponse(request, self.object_history_template or [
"admin/%s/%s/object_history.html" % (app_label, opts.model_name),
"admin/%s/object_history.html" % app_label,
"admin/object_history.html"
], context)
def get_formset_kwargs(self, request, obj, inline, prefix):
formset_params = {
'instance': obj,
'prefix': prefix,
'queryset': inline.get_queryset(request),
}
if request.method == 'POST':
formset_params.update({
'data': request.POST.copy(),
'files': request.FILES,
'save_as_new': '_saveasnew' in request.POST
})
return formset_params
def _create_formsets(self, request, obj, change):
"Helper function to generate formsets for add/change_view."
formsets = []
inline_instances = []
prefixes = {}
get_formsets_args = [request]
if change:
get_formsets_args.append(obj)
for FormSet, inline in self.get_formsets_with_inlines(*get_formsets_args):
prefix = FormSet.get_default_prefix()
prefixes[prefix] = prefixes.get(prefix, 0) + 1
if prefixes[prefix] != 1 or not prefix:
prefix = "%s-%s" % (prefix, prefixes[prefix])
formset_params = self.get_formset_kwargs(request, obj, inline, prefix)
formset = FormSet(**formset_params)
def user_deleted_form(request, obj, formset, index):
"""Return whether or not the user deleted the form."""
return (
inline.has_delete_permission(request, obj) and
'{}-{}-DELETE'.format(formset.prefix, index) in request.POST
)
# Bypass validation of each view-only inline form (since the form's
# data won't be in request.POST), unless the form was deleted.
if not inline.has_change_permission(request, obj if change else None):
for index, form in enumerate(formset.initial_forms):
if user_deleted_form(request, obj, formset, index):
continue
form._errors = {}
form.cleaned_data = form.initial
formsets.append(formset)
inline_instances.append(inline)
return formsets, inline_instances
class InlineModelAdmin(BaseModelAdmin):
"""
Options for inline editing of ``model`` instances.
Provide ``fk_name`` to specify the attribute name of the ``ForeignKey``
from ``model`` to its parent. This is required if ``model`` has more than
one ``ForeignKey`` to its parent.
"""
model = None
fk_name = None
formset = BaseInlineFormSet
extra = 3
min_num = None
max_num = None
template = None
verbose_name = None
verbose_name_plural = None
can_delete = True
show_change_link = False
checks_class = InlineModelAdminChecks
classes = None
def __init__(self, parent_model, admin_site):
self.admin_site = admin_site
self.parent_model = parent_model
self.opts = self.model._meta
self.has_registered_model = admin_site.is_registered(self.model)
super().__init__()
if self.verbose_name_plural is None:
if self.verbose_name is None:
self.verbose_name_plural = self.model._meta.verbose_name_plural
else:
self.verbose_name_plural = format_lazy('{}s', self.verbose_name)
if self.verbose_name is None:
self.verbose_name = self.model._meta.verbose_name
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = ['vendor/jquery/jquery%s.js' % extra, 'jquery.init.js', 'inlines.js']
if self.filter_vertical or self.filter_horizontal:
js.extend(['SelectBox.js', 'SelectFilter2.js'])
if self.classes and 'collapse' in self.classes:
js.append('collapse.js')
return forms.Media(js=['admin/js/%s' % url for url in js])
def get_extra(self, request, obj=None, **kwargs):
"""Hook for customizing the number of extra inline forms."""
return self.extra
def get_min_num(self, request, obj=None, **kwargs):
"""Hook for customizing the min number of inline forms."""
return self.min_num
def get_max_num(self, request, obj=None, **kwargs):
"""Hook for customizing the max number of extra inline forms."""
return self.max_num
def get_formset(self, request, obj=None, **kwargs):
"""Return a BaseInlineFormSet class for use in admin add/change views."""
if 'fields' in kwargs:
fields = kwargs.pop('fields')
else:
fields = flatten_fieldsets(self.get_fieldsets(request, obj))
excluded = self.get_exclude(request, obj)
exclude = [] if excluded is None else list(excluded)
exclude.extend(self.get_readonly_fields(request, obj))
if excluded is None and hasattr(self.form, '_meta') and self.form._meta.exclude:
# Take the custom ModelForm's Meta.exclude into account only if the
# InlineModelAdmin doesn't define its own.
exclude.extend(self.form._meta.exclude)
# If exclude is an empty list we use None, since that's the actual
# default.
exclude = exclude or None
can_delete = self.can_delete and self.has_delete_permission(request, obj)
defaults = {
'form': self.form,
'formset': self.formset,
'fk_name': self.fk_name,
'fields': fields,
'exclude': exclude,
'formfield_callback': partial(self.formfield_for_dbfield, request=request),
'extra': self.get_extra(request, obj, **kwargs),
'min_num': self.get_min_num(request, obj, **kwargs),
'max_num': self.get_max_num(request, obj, **kwargs),
'can_delete': can_delete,
**kwargs,
}
base_model_form = defaults['form']
can_change = self.has_change_permission(request, obj) if request else True
can_add = self.has_add_permission(request, obj) if request else True
class DeleteProtectedModelForm(base_model_form):
def hand_clean_DELETE(self):
"""
We don't validate the 'DELETE' field itself because on
templates it's not rendered using the field information, but
just using a generic "deletion_field" of the InlineModelAdmin.
"""
if self.cleaned_data.get(DELETION_FIELD_NAME, False):
using = router.db_for_write(self._meta.model)
collector = NestedObjects(using=using)
if self.instance._state.adding:
return
collector.collect([self.instance])
if collector.protected:
objs = []
for p in collector.protected:
objs.append(
# Translators: Model verbose name and instance representation,
# suitable to be an item in a list.
_('%(class_name)s %(instance)s') % {
'class_name': p._meta.verbose_name,
'instance': p}
)
params = {
'class_name': self._meta.model._meta.verbose_name,
'instance': self.instance,
'related_objects': get_text_list(objs, _('and')),
}
msg = _("Deleting %(class_name)s %(instance)s would require "
"deleting the following protected related objects: "
"%(related_objects)s")
raise ValidationError(msg, code='deleting_protected', params=params)
def is_valid(self):
result = super().is_valid()
self.hand_clean_DELETE()
return result
def has_changed(self):
# Protect against unauthorized edits.
if not can_change and not self.instance._state.adding:
return False
if not can_add and self.instance._state.adding:
return False
return super().has_changed()
defaults['form'] = DeleteProtectedModelForm
if defaults['fields'] is None and not modelform_defines_fields(defaults['form']):
defaults['fields'] = forms.ALL_FIELDS
return inlineformset_factory(self.parent_model, self.model, **defaults)
def _get_form_for_get_fields(self, request, obj=None):
return self.get_formset(request, obj, fields=None).form
def get_queryset(self, request):
queryset = super().get_queryset(request)
if not self.has_view_or_change_permission(request):
queryset = queryset.none()
return queryset
def _has_any_perms_for_target_model(self, request, perms):
"""
This method is called only when the ModelAdmin's model is for an
ManyToManyField's implicit through model (if self.opts.auto_created).
Return True if the user has any of the given permissions ('add',
'change', etc.) for the model that points to the through model.
"""
opts = self.opts
# Find the target model of an auto-created many-to-many relationship.
for field in opts.fields:
if field.remote_field and field.remote_field.model != self.parent_model:
opts = field.remote_field.model._meta
break
return any(
request.user.has_perm('%s.%s' % (opts.app_label, get_permission_codename(perm, opts)))
for perm in perms
)
def has_add_permission(self, request, obj):
if self.opts.auto_created:
# Auto-created intermediate models don't have their own
# permissions. The user needs to have the change permission for the
# related model in order to be able to do anything with the
# intermediate model.
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_add_permission(request)
def has_change_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission().
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_change_permission(request)
def has_delete_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission().
return self._has_any_perms_for_target_model(request, ['change'])
return super().has_delete_permission(request, obj)
def has_view_permission(self, request, obj=None):
if self.opts.auto_created:
# Same comment as has_add_permission(). The 'change' permission
# also implies the 'view' permission.
return self._has_any_perms_for_target_model(request, ['view', 'change'])
return super().has_view_permission(request)
class StackedInline(InlineModelAdmin):
template = 'admin/edit_inline/stacked.html'
class TabularInline(InlineModelAdmin):
template = 'admin/edit_inline/tabular.html'
|
471629ad178af62b563587df787acd110198d0e86388c4ad87a7950e62138a94 | import datetime
import decimal
import json
from collections import defaultdict
from django.core.exceptions import FieldDoesNotExist
from django.db import models, router
from django.db.models.constants import LOOKUP_SEP
from django.db.models.deletion import Collector
from django.forms.utils import pretty_name
from django.urls import NoReverseMatch, reverse
from django.utils import formats, timezone
from django.utils.html import format_html
from django.utils.regex_helper import _lazy_re_compile
from django.utils.text import capfirst
from django.utils.translation import ngettext, override as translation_override
QUOTE_MAP = {i: '_%02X' % i for i in b'":/_#?;@&=+$,"[]<>%\n\\'}
UNQUOTE_MAP = {v: chr(k) for k, v in QUOTE_MAP.items()}
UNQUOTE_RE = _lazy_re_compile('_(?:%s)' % '|'.join([x[1:] for x in UNQUOTE_MAP]))
class FieldIsAForeignKeyColumnName(Exception):
"""A field is a foreign key attname, i.e. <FK>_id."""
pass
def lookup_spawns_duplicates(opts, lookup_path):
"""
Return True if the given lookup path spawns duplicates.
"""
lookup_fields = lookup_path.split(LOOKUP_SEP)
# Go through the fields (following all relations) and look for an m2m.
for field_name in lookup_fields:
if field_name == 'pk':
field_name = opts.pk.name
try:
field = opts.get_field(field_name)
except FieldDoesNotExist:
# Ignore query lookups.
continue
else:
if hasattr(field, 'path_infos'):
# This field is a relation; update opts to follow the relation.
path_info = field.path_infos
opts = path_info[-1].to_opts
if any(path.m2m for path in path_info):
# This field is a m2m relation so duplicates must be
# handled.
return True
return False
def prepare_lookup_value(key, value, separator=','):
"""
Return a lookup value prepared to be used in queryset filtering.
"""
# if key ends with __in, split parameter into separate values
if key.endswith('__in'):
value = value.split(separator)
# if key ends with __isnull, special case '' and the string literals 'false' and '0'
elif key.endswith('__isnull'):
value = value.lower() not in ('', 'false', '0')
return value
def quote(s):
"""
Ensure that primary key values do not confuse the admin URLs by escaping
any '/', '_' and ':' and similarly problematic characters.
Similar to urllib.parse.quote(), except that the quoting is slightly
different so that it doesn't get automatically unquoted by the web browser.
"""
return s.translate(QUOTE_MAP) if isinstance(s, str) else s
def unquote(s):
"""Undo the effects of quote()."""
return UNQUOTE_RE.sub(lambda m: UNQUOTE_MAP[m[0]], s)
def flatten(fields):
"""
Return a list which is a single level of flattening of the original list.
"""
flat = []
for field in fields:
if isinstance(field, (list, tuple)):
flat.extend(field)
else:
flat.append(field)
return flat
def flatten_fieldsets(fieldsets):
"""Return a list of field names from an admin fieldsets structure."""
field_names = []
for name, opts in fieldsets:
field_names.extend(
flatten(opts['fields'])
)
return field_names
def get_deleted_objects(objs, request, admin_site):
"""
Find all objects related to ``objs`` that should also be deleted. ``objs``
must be a homogeneous iterable of objects (e.g. a QuerySet).
Return a nested list of strings suitable for display in the
template with the ``unordered_list`` filter.
"""
try:
obj = objs[0]
except IndexError:
return [], {}, set(), []
else:
using = router.db_for_write(obj._meta.model)
collector = NestedObjects(using=using)
collector.collect(objs)
perms_needed = set()
def format_callback(obj):
model = obj.__class__
has_admin = model in admin_site._registry
opts = obj._meta
no_edit_link = '%s: %s' % (capfirst(opts.verbose_name), obj)
if has_admin:
if not admin_site._registry[model].has_delete_permission(request, obj):
perms_needed.add(opts.verbose_name)
try:
admin_url = reverse('%s:%s_%s_change'
% (admin_site.name,
opts.app_label,
opts.model_name),
None, (quote(obj.pk),))
except NoReverseMatch:
# Change url doesn't exist -- don't display link to edit
return no_edit_link
# Display a link to the admin page.
return format_html('{}: <a href="{}">{}</a>',
capfirst(opts.verbose_name),
admin_url,
obj)
else:
# Don't display link to edit, because it either has no
# admin or is edited inline.
return no_edit_link
to_delete = collector.nested(format_callback)
protected = [format_callback(obj) for obj in collector.protected]
model_count = {model._meta.verbose_name_plural: len(objs) for model, objs in collector.model_objs.items()}
return to_delete, model_count, perms_needed, protected
class NestedObjects(Collector):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.edges = {} # {from_instance: [to_instances]}
self.protected = set()
self.model_objs = defaultdict(set)
def add_edge(self, source, target):
self.edges.setdefault(source, []).append(target)
def collect(self, objs, source=None, source_attr=None, **kwargs):
for obj in objs:
if source_attr and not source_attr.endswith('+'):
related_name = source_attr % {
'class': source._meta.model_name,
'app_label': source._meta.app_label,
}
self.add_edge(getattr(obj, related_name), obj)
else:
self.add_edge(None, obj)
self.model_objs[obj._meta.model].add(obj)
try:
return super().collect(objs, source_attr=source_attr, **kwargs)
except models.ProtectedError as e:
self.protected.update(e.protected_objects)
except models.RestrictedError as e:
self.protected.update(e.restricted_objects)
def related_objects(self, related_model, related_fields, objs):
qs = super().related_objects(related_model, related_fields, objs)
return qs.select_related(*[related_field.name for related_field in related_fields])
def _nested(self, obj, seen, format_callback):
if obj in seen:
return []
seen.add(obj)
children = []
for child in self.edges.get(obj, ()):
children.extend(self._nested(child, seen, format_callback))
if format_callback:
ret = [format_callback(obj)]
else:
ret = [obj]
if children:
ret.append(children)
return ret
def nested(self, format_callback=None):
"""
Return the graph as a nested list.
"""
seen = set()
roots = []
for root in self.edges.get(None, ()):
roots.extend(self._nested(root, seen, format_callback))
return roots
def can_fast_delete(self, *args, **kwargs):
"""
We always want to load the objects into memory so that we can display
them to the user in confirm page.
"""
return False
def model_format_dict(obj):
"""
Return a `dict` with keys 'verbose_name' and 'verbose_name_plural',
typically for use with string formatting.
`obj` may be a `Model` instance, `Model` subclass, or `QuerySet` instance.
"""
if isinstance(obj, (models.Model, models.base.ModelBase)):
opts = obj._meta
elif isinstance(obj, models.query.QuerySet):
opts = obj.model._meta
else:
opts = obj
return {
'verbose_name': opts.verbose_name,
'verbose_name_plural': opts.verbose_name_plural,
}
def model_ngettext(obj, n=None):
"""
Return the appropriate `verbose_name` or `verbose_name_plural` value for
`obj` depending on the count `n`.
`obj` may be a `Model` instance, `Model` subclass, or `QuerySet` instance.
If `obj` is a `QuerySet` instance, `n` is optional and the length of the
`QuerySet` is used.
"""
if isinstance(obj, models.query.QuerySet):
if n is None:
n = obj.count()
obj = obj.model
d = model_format_dict(obj)
singular, plural = d["verbose_name"], d["verbose_name_plural"]
return ngettext(singular, plural, n or 0)
def lookup_field(name, obj, model_admin=None):
opts = obj._meta
try:
f = _get_non_gfk_field(opts, name)
except (FieldDoesNotExist, FieldIsAForeignKeyColumnName):
# For non-field values, the value is either a method, property or
# returned via a callable.
if callable(name):
attr = name
value = attr(obj)
elif hasattr(model_admin, name) and name != '__str__':
attr = getattr(model_admin, name)
value = attr(obj)
else:
attr = getattr(obj, name)
if callable(attr):
value = attr()
else:
value = attr
f = None
else:
attr = None
value = getattr(obj, name)
return f, attr, value
def _get_non_gfk_field(opts, name):
"""
For historical reasons, the admin app relies on GenericForeignKeys as being
"not found" by get_field(). This could likely be cleaned up.
Reverse relations should also be excluded as these aren't attributes of the
model (rather something like `foo_set`).
"""
field = opts.get_field(name)
if (field.is_relation and
# Generic foreign keys OR reverse relations
((field.many_to_one and not field.related_model) or field.one_to_many)):
raise FieldDoesNotExist()
# Avoid coercing <FK>_id fields to FK
if field.is_relation and not field.many_to_many and hasattr(field, 'attname') and field.attname == name:
raise FieldIsAForeignKeyColumnName()
return field
def label_for_field(name, model, model_admin=None, return_attr=False, form=None):
"""
Return a sensible label for a field name. The name can be a callable,
property (but not created with @property decorator), or the name of an
object's attribute, as well as a model field. If return_attr is True, also
return the resolved attribute (which could be a callable). This will be
None if (and only if) the name refers to a field.
"""
attr = None
try:
field = _get_non_gfk_field(model._meta, name)
try:
label = field.verbose_name
except AttributeError:
# field is likely a ForeignObjectRel
label = field.related_model._meta.verbose_name
except FieldDoesNotExist:
if name == "__str__":
label = str(model._meta.verbose_name)
attr = str
else:
if callable(name):
attr = name
elif hasattr(model_admin, name):
attr = getattr(model_admin, name)
elif hasattr(model, name):
attr = getattr(model, name)
elif form and name in form.fields:
attr = form.fields[name]
else:
message = "Unable to lookup '%s' on %s" % (name, model._meta.object_name)
if model_admin:
message += " or %s" % model_admin.__class__.__name__
if form:
message += " or %s" % form.__class__.__name__
raise AttributeError(message)
if hasattr(attr, "short_description"):
label = attr.short_description
elif (isinstance(attr, property) and
hasattr(attr, "fget") and
hasattr(attr.fget, "short_description")):
label = attr.fget.short_description
elif callable(attr):
if attr.__name__ == "<lambda>":
label = "--"
else:
label = pretty_name(attr.__name__)
else:
label = pretty_name(name)
except FieldIsAForeignKeyColumnName:
label = pretty_name(name)
attr = name
if return_attr:
return (label, attr)
else:
return label
def help_text_for_field(name, model):
help_text = ""
try:
field = _get_non_gfk_field(model._meta, name)
except (FieldDoesNotExist, FieldIsAForeignKeyColumnName):
pass
else:
if hasattr(field, 'help_text'):
help_text = field.help_text
return help_text
def display_for_field(value, field, empty_value_display):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if getattr(field, 'flatchoices', None):
return dict(field.flatchoices).get(value, empty_value_display)
# BooleanField needs special-case null-handling, so it comes before the
# general null test.
elif isinstance(field, models.BooleanField):
return _boolean_icon(value)
elif value is None:
return empty_value_display
elif isinstance(field, models.DateTimeField):
return formats.localize(timezone.template_localtime(value))
elif isinstance(field, (models.DateField, models.TimeField)):
return formats.localize(value)
elif isinstance(field, models.DecimalField):
return formats.number_format(value, field.decimal_places)
elif isinstance(field, (models.IntegerField, models.FloatField)):
return formats.number_format(value)
elif isinstance(field, models.FileField) and value:
return format_html('<a href="{}">{}</a>', value.url, value)
elif isinstance(field, models.JSONField) and value:
try:
return json.dumps(value, ensure_ascii=False, cls=field.encoder)
except TypeError:
return display_for_value(value, empty_value_display)
else:
return display_for_value(value, empty_value_display)
def display_for_value(value, empty_value_display, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if boolean:
return _boolean_icon(value)
elif value is None:
return empty_value_display
elif isinstance(value, bool):
return str(value)
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, (int, decimal.Decimal, float)):
return formats.number_format(value)
elif isinstance(value, (list, tuple)):
return ', '.join(str(v) for v in value)
else:
return str(value)
class NotRelationField(Exception):
pass
def get_model_from_relation(field):
if hasattr(field, 'path_infos'):
return field.path_infos[-1].to_opts.model
else:
raise NotRelationField
def reverse_field_path(model, path):
""" Create a reversed field path.
E.g. Given (Order, "user__groups"),
return (Group, "user__order").
Final field must be a related model, not a data field.
"""
reversed_path = []
parent = model
pieces = path.split(LOOKUP_SEP)
for piece in pieces:
field = parent._meta.get_field(piece)
# skip trailing data field if extant:
if len(reversed_path) == len(pieces) - 1: # final iteration
try:
get_model_from_relation(field)
except NotRelationField:
break
# Field should point to another model
if field.is_relation and not (field.auto_created and not field.concrete):
related_name = field.related_query_name()
parent = field.remote_field.model
else:
related_name = field.field.name
parent = field.related_model
reversed_path.insert(0, related_name)
return (parent, LOOKUP_SEP.join(reversed_path))
def get_fields_from_path(model, path):
""" Return list of Fields given path relative to model.
e.g. (ModelX, "user__groups__name") -> [
<django.db.models.fields.related.ForeignKey object at 0x...>,
<django.db.models.fields.related.ManyToManyField object at 0x...>,
<django.db.models.fields.CharField object at 0x...>,
]
"""
pieces = path.split(LOOKUP_SEP)
fields = []
for piece in pieces:
if fields:
parent = get_model_from_relation(fields[-1])
else:
parent = model
fields.append(parent._meta.get_field(piece))
return fields
def construct_change_message(form, formsets, add):
"""
Construct a JSON structure describing changes from a changed object.
Translations are deactivated so that strings are stored untranslated.
Translation happens later on LogEntry access.
"""
# Evaluating `form.changed_data` prior to disabling translations is required
# to avoid fields affected by localization from being included incorrectly,
# e.g. where date formats differ such as MM/DD/YYYY vs DD/MM/YYYY.
changed_data = form.changed_data
with translation_override(None):
# Deactivate translations while fetching verbose_name for form
# field labels and using `field_name`, if verbose_name is not provided.
# Translations will happen later on LogEntry access.
changed_field_labels = _get_changed_field_labels_from_form(form, changed_data)
change_message = []
if add:
change_message.append({'added': {}})
elif form.changed_data:
change_message.append({'changed': {'fields': changed_field_labels}})
if formsets:
with translation_override(None):
for formset in formsets:
for added_object in formset.new_objects:
change_message.append({
'added': {
'name': str(added_object._meta.verbose_name),
'object': str(added_object),
}
})
for changed_object, changed_fields in formset.changed_objects:
change_message.append({
'changed': {
'name': str(changed_object._meta.verbose_name),
'object': str(changed_object),
'fields': _get_changed_field_labels_from_form(formset.forms[0], changed_fields),
}
})
for deleted_object in formset.deleted_objects:
change_message.append({
'deleted': {
'name': str(deleted_object._meta.verbose_name),
'object': str(deleted_object),
}
})
return change_message
def _get_changed_field_labels_from_form(form, changed_data):
changed_field_labels = []
for field_name in changed_data:
try:
verbose_field_name = form.fields[field_name].label or field_name
except KeyError:
verbose_field_name = field_name
changed_field_labels.append(str(verbose_field_name))
return changed_field_labels
|
1f138be5670f8c2acb1886c03217ffe68e172a21cdbb3a60395bd0d04d63fa85 | import json
import os
import posixpath
import re
from urllib.parse import unquote, urldefrag, urlsplit, urlunsplit
from django.conf import settings
from django.contrib.staticfiles.utils import check_settings, matches_patterns
from django.core.exceptions import ImproperlyConfigured
from django.core.files.base import ContentFile
from django.core.files.storage import FileSystemStorage, get_storage_class
from django.utils.crypto import md5
from django.utils.functional import LazyObject
class StaticFilesStorage(FileSystemStorage):
"""
Standard file system storage for static files.
The defaults for ``location`` and ``base_url`` are
``STATIC_ROOT`` and ``STATIC_URL``.
"""
def __init__(self, location=None, base_url=None, *args, **kwargs):
if location is None:
location = settings.STATIC_ROOT
if base_url is None:
base_url = settings.STATIC_URL
check_settings(base_url)
super().__init__(location, base_url, *args, **kwargs)
# FileSystemStorage fallbacks to MEDIA_ROOT when location
# is empty, so we restore the empty value.
if not location:
self.base_location = None
self.location = None
def path(self, name):
if not self.location:
raise ImproperlyConfigured("You're using the staticfiles app "
"without having set the STATIC_ROOT "
"setting to a filesystem path.")
return super().path(name)
class HashedFilesMixin:
default_template = """url("%(url)s")"""
max_post_process_passes = 5
patterns = (
("*.css", (
r"""(?P<matched>url\(['"]{0,1}\s*(?P<url>.*?)["']{0,1}\))""",
(
r"""(?P<matched>@import\s*["']\s*(?P<url>.*?)["'])""",
"""@import url("%(url)s")""",
),
)),
('*.js', (
(
r'(?m)(?P<matched>)^(//# (?-i:sourceMappingURL)=(?P<url>.*))$',
'//# sourceMappingURL=%(url)s',
),
)),
)
keep_intermediate_files = True
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._patterns = {}
self.hashed_files = {}
for extension, patterns in self.patterns:
for pattern in patterns:
if isinstance(pattern, (tuple, list)):
pattern, template = pattern
else:
template = self.default_template
compiled = re.compile(pattern, re.IGNORECASE)
self._patterns.setdefault(extension, []).append((compiled, template))
def file_hash(self, name, content=None):
"""
Return a hash of the file with the given name and optional content.
"""
if content is None:
return None
hasher = md5(usedforsecurity=False)
for chunk in content.chunks():
hasher.update(chunk)
return hasher.hexdigest()[:12]
def hashed_name(self, name, content=None, filename=None):
# `filename` is the name of file to hash if `content` isn't given.
# `name` is the base name to construct the new hashed filename from.
parsed_name = urlsplit(unquote(name))
clean_name = parsed_name.path.strip()
filename = (filename and urlsplit(unquote(filename)).path.strip()) or clean_name
opened = content is None
if opened:
if not self.exists(filename):
raise ValueError("The file '%s' could not be found with %r." % (filename, self))
try:
content = self.open(filename)
except OSError:
# Handle directory paths and fragments
return name
try:
file_hash = self.file_hash(clean_name, content)
finally:
if opened:
content.close()
path, filename = os.path.split(clean_name)
root, ext = os.path.splitext(filename)
file_hash = ('.%s' % file_hash) if file_hash else ''
hashed_name = os.path.join(path, "%s%s%s" %
(root, file_hash, ext))
unparsed_name = list(parsed_name)
unparsed_name[2] = hashed_name
# Special casing for a @font-face hack, like url(myfont.eot?#iefix")
# http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax
if '?#' in name and not unparsed_name[3]:
unparsed_name[2] += '?'
return urlunsplit(unparsed_name)
def _url(self, hashed_name_func, name, force=False, hashed_files=None):
"""
Return the non-hashed URL in DEBUG mode.
"""
if settings.DEBUG and not force:
hashed_name, fragment = name, ''
else:
clean_name, fragment = urldefrag(name)
if urlsplit(clean_name).path.endswith('/'): # don't hash paths
hashed_name = name
else:
args = (clean_name,)
if hashed_files is not None:
args += (hashed_files,)
hashed_name = hashed_name_func(*args)
final_url = super().url(hashed_name)
# Special casing for a @font-face hack, like url(myfont.eot?#iefix")
# http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax
query_fragment = '?#' in name # [sic!]
if fragment or query_fragment:
urlparts = list(urlsplit(final_url))
if fragment and not urlparts[4]:
urlparts[4] = fragment
if query_fragment and not urlparts[3]:
urlparts[2] += '?'
final_url = urlunsplit(urlparts)
return unquote(final_url)
def url(self, name, force=False):
"""
Return the non-hashed URL in DEBUG mode.
"""
return self._url(self.stored_name, name, force)
def url_converter(self, name, hashed_files, template=None):
"""
Return the custom URL converter for the given file name.
"""
if template is None:
template = self.default_template
def converter(matchobj):
"""
Convert the matched URL to a normalized and hashed URL.
This requires figuring out which files the matched URL resolves
to and calling the url() method of the storage.
"""
matches = matchobj.groupdict()
matched = matches['matched']
url = matches['url']
# Ignore absolute/protocol-relative and data-uri URLs.
if re.match(r'^[a-z]+:', url):
return matched
# Ignore absolute URLs that don't point to a static file (dynamic
# CSS / JS?). Note that STATIC_URL cannot be empty.
if url.startswith('/') and not url.startswith(settings.STATIC_URL):
return matched
# Strip off the fragment so a path-like fragment won't interfere.
url_path, fragment = urldefrag(url)
if url_path.startswith('/'):
# Otherwise the condition above would have returned prematurely.
assert url_path.startswith(settings.STATIC_URL)
target_name = url_path[len(settings.STATIC_URL):]
else:
# We're using the posixpath module to mix paths and URLs conveniently.
source_name = name if os.sep == '/' else name.replace(os.sep, '/')
target_name = posixpath.join(posixpath.dirname(source_name), url_path)
# Determine the hashed name of the target file with the storage backend.
hashed_url = self._url(
self._stored_name, unquote(target_name),
force=True, hashed_files=hashed_files,
)
transformed_url = '/'.join(url_path.split('/')[:-1] + hashed_url.split('/')[-1:])
# Restore the fragment that was stripped off earlier.
if fragment:
transformed_url += ('?#' if '?#' in url else '#') + fragment
# Return the hashed version to the file
matches['url'] = unquote(transformed_url)
return template % matches
return converter
def post_process(self, paths, dry_run=False, **options):
"""
Post process the given dictionary of files (called from collectstatic).
Processing is actually two separate operations:
1. renaming files to include a hash of their content for cache-busting,
and copying those files to the target storage.
2. adjusting files which contain references to other files so they
refer to the cache-busting filenames.
If either of these are performed on a file, then that file is considered
post-processed.
"""
# don't even dare to process the files if we're in dry run mode
if dry_run:
return
# where to store the new paths
hashed_files = {}
# build a list of adjustable files
adjustable_paths = [
path for path in paths
if matches_patterns(path, self._patterns)
]
# Adjustable files to yield at end, keyed by the original path.
processed_adjustable_paths = {}
# Do a single pass first. Post-process all files once, yielding not
# adjustable files and exceptions, and collecting adjustable files.
for name, hashed_name, processed, _ in self._post_process(paths, adjustable_paths, hashed_files):
if name not in adjustable_paths or isinstance(processed, Exception):
yield name, hashed_name, processed
else:
processed_adjustable_paths[name] = (name, hashed_name, processed)
paths = {path: paths[path] for path in adjustable_paths}
substitutions = False
for i in range(self.max_post_process_passes):
substitutions = False
for name, hashed_name, processed, subst in self._post_process(paths, adjustable_paths, hashed_files):
# Overwrite since hashed_name may be newer.
processed_adjustable_paths[name] = (name, hashed_name, processed)
substitutions = substitutions or subst
if not substitutions:
break
if substitutions:
yield 'All', None, RuntimeError('Max post-process passes exceeded.')
# Store the processed paths
self.hashed_files.update(hashed_files)
# Yield adjustable files with final, hashed name.
yield from processed_adjustable_paths.values()
def _post_process(self, paths, adjustable_paths, hashed_files):
# Sort the files by directory level
def path_level(name):
return len(name.split(os.sep))
for name in sorted(paths, key=path_level, reverse=True):
substitutions = True
# use the original, local file, not the copied-but-unprocessed
# file, which might be somewhere far away, like S3
storage, path = paths[name]
with storage.open(path) as original_file:
cleaned_name = self.clean_name(name)
hash_key = self.hash_key(cleaned_name)
# generate the hash with the original content, even for
# adjustable files.
if hash_key not in hashed_files:
hashed_name = self.hashed_name(name, original_file)
else:
hashed_name = hashed_files[hash_key]
# then get the original's file content..
if hasattr(original_file, 'seek'):
original_file.seek(0)
hashed_file_exists = self.exists(hashed_name)
processed = False
# ..to apply each replacement pattern to the content
if name in adjustable_paths:
old_hashed_name = hashed_name
content = original_file.read().decode('utf-8')
for extension, patterns in self._patterns.items():
if matches_patterns(path, (extension,)):
for pattern, template in patterns:
converter = self.url_converter(name, hashed_files, template)
try:
content = pattern.sub(converter, content)
except ValueError as exc:
yield name, None, exc, False
if hashed_file_exists:
self.delete(hashed_name)
# then save the processed result
content_file = ContentFile(content.encode())
if self.keep_intermediate_files:
# Save intermediate file for reference
self._save(hashed_name, content_file)
hashed_name = self.hashed_name(name, content_file)
if self.exists(hashed_name):
self.delete(hashed_name)
saved_name = self._save(hashed_name, content_file)
hashed_name = self.clean_name(saved_name)
# If the file hash stayed the same, this file didn't change
if old_hashed_name == hashed_name:
substitutions = False
processed = True
if not processed:
# or handle the case in which neither processing nor
# a change to the original file happened
if not hashed_file_exists:
processed = True
saved_name = self._save(hashed_name, original_file)
hashed_name = self.clean_name(saved_name)
# and then set the cache accordingly
hashed_files[hash_key] = hashed_name
yield name, hashed_name, processed, substitutions
def clean_name(self, name):
return name.replace('\\', '/')
def hash_key(self, name):
return name
def _stored_name(self, name, hashed_files):
# Normalize the path to avoid multiple names for the same file like
# ../foo/bar.css and ../foo/../foo/bar.css which normalize to the same
# path.
name = posixpath.normpath(name)
cleaned_name = self.clean_name(name)
hash_key = self.hash_key(cleaned_name)
cache_name = hashed_files.get(hash_key)
if cache_name is None:
cache_name = self.clean_name(self.hashed_name(name))
return cache_name
def stored_name(self, name):
cleaned_name = self.clean_name(name)
hash_key = self.hash_key(cleaned_name)
cache_name = self.hashed_files.get(hash_key)
if cache_name:
return cache_name
# No cached name found, recalculate it from the files.
intermediate_name = name
for i in range(self.max_post_process_passes + 1):
cache_name = self.clean_name(
self.hashed_name(name, content=None, filename=intermediate_name)
)
if intermediate_name == cache_name:
# Store the hashed name if there was a miss.
self.hashed_files[hash_key] = cache_name
return cache_name
else:
# Move on to the next intermediate file.
intermediate_name = cache_name
# If the cache name can't be determined after the max number of passes,
# the intermediate files on disk may be corrupt; avoid an infinite loop.
raise ValueError("The name '%s' could not be hashed with %r." % (name, self))
class ManifestFilesMixin(HashedFilesMixin):
manifest_version = '1.0' # the manifest format standard
manifest_name = 'staticfiles.json'
manifest_strict = True
keep_intermediate_files = False
def __init__(self, *args, manifest_storage=None, **kwargs):
super().__init__(*args, **kwargs)
if manifest_storage is None:
manifest_storage = self
self.manifest_storage = manifest_storage
self.hashed_files = self.load_manifest()
def read_manifest(self):
try:
with self.manifest_storage.open(self.manifest_name) as manifest:
return manifest.read().decode()
except FileNotFoundError:
return None
def load_manifest(self):
content = self.read_manifest()
if content is None:
return {}
try:
stored = json.loads(content)
except json.JSONDecodeError:
pass
else:
version = stored.get('version')
if version == '1.0':
return stored.get('paths', {})
raise ValueError("Couldn't load manifest '%s' (version %s)" %
(self.manifest_name, self.manifest_version))
def post_process(self, *args, **kwargs):
self.hashed_files = {}
yield from super().post_process(*args, **kwargs)
if not kwargs.get('dry_run'):
self.save_manifest()
def save_manifest(self):
payload = {'paths': self.hashed_files, 'version': self.manifest_version}
if self.manifest_storage.exists(self.manifest_name):
self.manifest_storage.delete(self.manifest_name)
contents = json.dumps(payload).encode()
self.manifest_storage._save(self.manifest_name, ContentFile(contents))
def stored_name(self, name):
parsed_name = urlsplit(unquote(name))
clean_name = parsed_name.path.strip()
hash_key = self.hash_key(clean_name)
cache_name = self.hashed_files.get(hash_key)
if cache_name is None:
if self.manifest_strict:
raise ValueError("Missing staticfiles manifest entry for '%s'" % clean_name)
cache_name = self.clean_name(self.hashed_name(name))
unparsed_name = list(parsed_name)
unparsed_name[2] = cache_name
# Special casing for a @font-face hack, like url(myfont.eot?#iefix")
# http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax
if '?#' in name and not unparsed_name[3]:
unparsed_name[2] += '?'
return urlunsplit(unparsed_name)
class ManifestStaticFilesStorage(ManifestFilesMixin, StaticFilesStorage):
"""
A static file system storage backend which also saves
hashed copies of the files it saves.
"""
pass
class ConfiguredStorage(LazyObject):
def _setup(self):
self._wrapped = get_storage_class(settings.STATICFILES_STORAGE)()
staticfiles_storage = ConfiguredStorage()
|
067d4037b7f5692815285403f581e9b61795ec2613dd408c6a095a2114c85354 | import datetime
import importlib
import io
import os
import sys
from unittest import mock
from django.apps import apps
from django.core.management import CommandError, call_command
from django.db import (
ConnectionHandler, DatabaseError, OperationalError, connection,
connections, models,
)
from django.db.backends.base.schema import BaseDatabaseSchemaEditor
from django.db.backends.utils import truncate_name
from django.db.migrations.exceptions import InconsistentMigrationHistory
from django.db.migrations.recorder import MigrationRecorder
from django.test import TestCase, override_settings, skipUnlessDBFeature
from django.test.utils import captured_stdout
from django.utils import timezone
from django.utils.version import get_docs_version
from .models import UnicodeModel, UnserializableModel
from .routers import TestRouter
from .test_base import MigrationTestBase
class MigrateTests(MigrationTestBase):
"""
Tests running the migrate command.
"""
databases = {'default', 'other'}
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_migrate(self):
"""
Tests basic usage of the migrate command.
"""
# No tables are created
self.assertTableNotExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
self.assertTableNotExists("migrations_book")
# Run the migrations to 0001 only
stdout = io.StringIO()
call_command('migrate', 'migrations', '0001', verbosity=2, stdout=stdout, no_color=True)
stdout = stdout.getvalue()
self.assertIn('Target specific migration: 0001_initial, from migrations', stdout)
self.assertIn('Applying migrations.0001_initial... OK', stdout)
self.assertIn('Running pre-migrate handlers for application migrations', stdout)
self.assertIn('Running post-migrate handlers for application migrations', stdout)
# The correct tables exist
self.assertTableExists("migrations_author")
self.assertTableExists("migrations_tribble")
self.assertTableNotExists("migrations_book")
# Run migrations all the way
call_command("migrate", verbosity=0)
# The correct tables exist
self.assertTableExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
self.assertTableExists("migrations_book")
# Unmigrate everything
stdout = io.StringIO()
call_command('migrate', 'migrations', 'zero', verbosity=2, stdout=stdout, no_color=True)
stdout = stdout.getvalue()
self.assertIn('Unapply all migrations: migrations', stdout)
self.assertIn('Unapplying migrations.0002_second... OK', stdout)
self.assertIn('Running pre-migrate handlers for application migrations', stdout)
self.assertIn('Running post-migrate handlers for application migrations', stdout)
# Tables are gone
self.assertTableNotExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
self.assertTableNotExists("migrations_book")
@override_settings(INSTALLED_APPS=[
'django.contrib.auth',
'django.contrib.contenttypes',
'migrations.migrations_test_apps.migrated_app',
])
def test_migrate_with_system_checks(self):
out = io.StringIO()
call_command('migrate', skip_checks=False, no_color=True, stdout=out)
self.assertIn('Apply all migrations: migrated_app', out.getvalue())
@override_settings(INSTALLED_APPS=['migrations', 'migrations.migrations_test_apps.unmigrated_app_syncdb'])
def test_app_without_migrations(self):
msg = "App 'unmigrated_app_syncdb' does not have migrations."
with self.assertRaisesMessage(CommandError, msg):
call_command('migrate', app_label='unmigrated_app_syncdb')
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_clashing_prefix'})
def test_ambiguous_prefix(self):
msg = (
"More than one migration matches 'a' in app 'migrations'. Please "
"be more specific."
)
with self.assertRaisesMessage(CommandError, msg):
call_command('migrate', app_label='migrations', migration_name='a')
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations'})
def test_unknown_prefix(self):
msg = "Cannot find a migration matching 'nonexistent' from app 'migrations'."
with self.assertRaisesMessage(CommandError, msg):
call_command('migrate', app_label='migrations', migration_name='nonexistent')
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_initial_false"})
def test_migrate_initial_false(self):
"""
`Migration.initial = False` skips fake-initial detection.
"""
# Make sure no tables are created
self.assertTableNotExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
# Run the migrations to 0001 only
call_command("migrate", "migrations", "0001", verbosity=0)
# Fake rollback
call_command("migrate", "migrations", "zero", fake=True, verbosity=0)
# Make sure fake-initial detection does not run
with self.assertRaises(DatabaseError):
call_command("migrate", "migrations", "0001", fake_initial=True, verbosity=0)
call_command("migrate", "migrations", "0001", fake=True, verbosity=0)
# Real rollback
call_command("migrate", "migrations", "zero", verbosity=0)
# Make sure it's all gone
self.assertTableNotExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
self.assertTableNotExists("migrations_book")
@override_settings(
MIGRATION_MODULES={"migrations": "migrations.test_migrations"},
DATABASE_ROUTERS=['migrations.routers.TestRouter'],
)
def test_migrate_fake_initial(self):
"""
--fake-initial only works if all tables created in the initial
migration of an app exists. Database routers must be obeyed when doing
that check.
"""
# Make sure no tables are created
for db in self.databases:
self.assertTableNotExists("migrations_author", using=db)
self.assertTableNotExists("migrations_tribble", using=db)
# Run the migrations to 0001 only
call_command("migrate", "migrations", "0001", verbosity=0)
call_command("migrate", "migrations", "0001", verbosity=0, database="other")
# Make sure the right tables exist
self.assertTableExists("migrations_author")
self.assertTableNotExists("migrations_tribble")
# Also check the "other" database
self.assertTableNotExists("migrations_author", using="other")
self.assertTableExists("migrations_tribble", using="other")
# Fake a roll-back
call_command("migrate", "migrations", "zero", fake=True, verbosity=0)
call_command("migrate", "migrations", "zero", fake=True, verbosity=0, database="other")
# Make sure the tables still exist
self.assertTableExists("migrations_author")
self.assertTableExists("migrations_tribble", using="other")
# Try to run initial migration
with self.assertRaises(DatabaseError):
call_command("migrate", "migrations", "0001", verbosity=0)
# Run initial migration with an explicit --fake-initial
out = io.StringIO()
with mock.patch('django.core.management.color.supports_color', lambda *args: False):
call_command("migrate", "migrations", "0001", fake_initial=True, stdout=out, verbosity=1)
call_command("migrate", "migrations", "0001", fake_initial=True, verbosity=0, database="other")
self.assertIn(
"migrations.0001_initial... faked",
out.getvalue().lower()
)
try:
# Run migrations all the way.
call_command('migrate', verbosity=0)
call_command('migrate', verbosity=0, database="other")
self.assertTableExists('migrations_author')
self.assertTableNotExists('migrations_tribble')
self.assertTableExists('migrations_book')
self.assertTableNotExists('migrations_author', using='other')
self.assertTableNotExists('migrations_tribble', using='other')
self.assertTableNotExists('migrations_book', using='other')
# Fake a roll-back.
call_command('migrate', 'migrations', 'zero', fake=True, verbosity=0)
call_command('migrate', 'migrations', 'zero', fake=True, verbosity=0, database='other')
self.assertTableExists('migrations_author')
self.assertTableNotExists('migrations_tribble')
self.assertTableExists('migrations_book')
# Run initial migration.
with self.assertRaises(DatabaseError):
call_command('migrate', 'migrations', verbosity=0)
# Run initial migration with an explicit --fake-initial.
with self.assertRaises(DatabaseError):
# Fails because "migrations_tribble" does not exist but needs
# to in order to make --fake-initial work.
call_command('migrate', 'migrations', fake_initial=True, verbosity=0)
# Fake an apply.
call_command('migrate', 'migrations', fake=True, verbosity=0)
call_command('migrate', 'migrations', fake=True, verbosity=0, database='other')
finally:
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
call_command('migrate', 'migrations', 'zero', verbosity=0, database='other')
# Make sure it's all gone
for db in self.databases:
self.assertTableNotExists("migrations_author", using=db)
self.assertTableNotExists("migrations_tribble", using=db)
self.assertTableNotExists("migrations_book", using=db)
@skipUnlessDBFeature('ignores_table_name_case')
def test_migrate_fake_initial_case_insensitive(self):
with override_settings(MIGRATION_MODULES={
'migrations': 'migrations.test_fake_initial_case_insensitive.initial',
}):
call_command('migrate', 'migrations', '0001', verbosity=0)
call_command('migrate', 'migrations', 'zero', fake=True, verbosity=0)
with override_settings(MIGRATION_MODULES={
'migrations': 'migrations.test_fake_initial_case_insensitive.fake_initial',
}):
out = io.StringIO()
call_command(
'migrate',
'migrations',
'0001',
fake_initial=True,
stdout=out,
verbosity=1,
no_color=True,
)
self.assertIn(
'migrations.0001_initial... faked',
out.getvalue().lower(),
)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_fake_split_initial"})
def test_migrate_fake_split_initial(self):
"""
Split initial migrations can be faked with --fake-initial.
"""
try:
call_command('migrate', 'migrations', '0002', verbosity=0)
call_command('migrate', 'migrations', 'zero', fake=True, verbosity=0)
out = io.StringIO()
with mock.patch('django.core.management.color.supports_color', lambda *args: False):
call_command('migrate', 'migrations', '0002', fake_initial=True, stdout=out, verbosity=1)
value = out.getvalue().lower()
self.assertIn('migrations.0001_initial... faked', value)
self.assertIn('migrations.0002_second... faked', value)
finally:
# Fake an apply.
call_command('migrate', 'migrations', fake=True, verbosity=0)
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_migrate_conflict_exit(self):
"""
migrate exits if it detects a conflict.
"""
msg = (
"Conflicting migrations detected; multiple leaf nodes in the "
"migration graph: (0002_conflicting_second, 0002_second in "
"migrations).\n"
"To fix them run 'python manage.py makemigrations --merge'"
)
with self.assertRaisesMessage(CommandError, msg):
call_command("migrate", "migrations")
@override_settings(MIGRATION_MODULES={
'migrations': 'migrations.test_migrations',
})
def test_migrate_check(self):
with self.assertRaises(SystemExit):
call_command('migrate', 'migrations', '0001', check_unapplied=True)
self.assertTableNotExists('migrations_author')
self.assertTableNotExists('migrations_tribble')
self.assertTableNotExists('migrations_book')
@override_settings(MIGRATION_MODULES={
'migrations': 'migrations.test_migrations_plan',
})
def test_migrate_check_plan(self):
out = io.StringIO()
with self.assertRaises(SystemExit):
call_command(
'migrate',
'migrations',
'0001',
check_unapplied=True,
plan=True,
stdout=out,
no_color=True,
)
self.assertEqual(
'Planned operations:\n'
'migrations.0001_initial\n'
' Create model Salamander\n'
' Raw Python operation -> Grow salamander tail.\n',
out.getvalue(),
)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_showmigrations_list(self):
"""
showmigrations --list displays migrations and whether or not they're
applied.
"""
out = io.StringIO()
with mock.patch('django.core.management.color.supports_color', lambda *args: True):
call_command("showmigrations", format='list', stdout=out, verbosity=0, no_color=False)
self.assertEqual(
'\x1b[1mmigrations\n\x1b[0m'
' [ ] 0001_initial\n'
' [ ] 0002_second\n',
out.getvalue().lower()
)
call_command("migrate", "migrations", "0001", verbosity=0)
out = io.StringIO()
# Giving the explicit app_label tests for selective `show_list` in the command
call_command("showmigrations", "migrations", format='list', stdout=out, verbosity=0, no_color=True)
self.assertEqual(
'migrations\n'
' [x] 0001_initial\n'
' [ ] 0002_second\n',
out.getvalue().lower()
)
out = io.StringIO()
# Applied datetimes are displayed at verbosity 2+.
call_command('showmigrations', 'migrations', stdout=out, verbosity=2, no_color=True)
migration1 = MigrationRecorder(connection).migration_qs.get(app='migrations', name='0001_initial')
self.assertEqual(
'migrations\n'
' [x] 0001_initial (applied at %s)\n'
' [ ] 0002_second\n' % migration1.applied.strftime('%Y-%m-%d %H:%M:%S'),
out.getvalue().lower()
)
# Cleanup by unmigrating everything
call_command("migrate", "migrations", "zero", verbosity=0)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_showmigrations_list_squashed(self):
out = io.StringIO()
call_command('showmigrations', format='list', stdout=out, verbosity=2, no_color=True)
self.assertEqual(
'migrations\n'
' [ ] 0001_squashed_0002 (2 squashed migrations)\n',
out.getvalue().lower(),
)
out = io.StringIO()
call_command(
'migrate',
'migrations',
'0001_squashed_0002',
stdout=out,
verbosity=2,
no_color=True,
)
try:
self.assertIn(
'operations to perform:\n'
' target specific migration: 0001_squashed_0002, from migrations\n'
'running pre-migrate handlers for application migrations\n'
'running migrations:\n'
' applying migrations.0001_squashed_0002... ok (',
out.getvalue().lower(),
)
out = io.StringIO()
call_command('showmigrations', format='list', stdout=out, verbosity=2, no_color=True)
self.assertEqual(
'migrations\n'
' [x] 0001_squashed_0002 (2 squashed migrations)\n',
out.getvalue().lower(),
)
finally:
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_run_before"})
def test_showmigrations_plan(self):
"""
Tests --plan output of showmigrations command
"""
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out)
self.assertEqual(
"[ ] migrations.0001_initial\n"
"[ ] migrations.0003_third\n"
"[ ] migrations.0002_second\n",
out.getvalue().lower()
)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out, verbosity=2)
self.assertEqual(
"[ ] migrations.0001_initial\n"
"[ ] migrations.0003_third ... (migrations.0001_initial)\n"
"[ ] migrations.0002_second ... (migrations.0001_initial, migrations.0003_third)\n",
out.getvalue().lower()
)
call_command("migrate", "migrations", "0003", verbosity=0)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out)
self.assertEqual(
"[x] migrations.0001_initial\n"
"[x] migrations.0003_third\n"
"[ ] migrations.0002_second\n",
out.getvalue().lower()
)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out, verbosity=2)
self.assertEqual(
"[x] migrations.0001_initial\n"
"[x] migrations.0003_third ... (migrations.0001_initial)\n"
"[ ] migrations.0002_second ... (migrations.0001_initial, migrations.0003_third)\n",
out.getvalue().lower()
)
# Cleanup by unmigrating everything
call_command("migrate", "migrations", "zero", verbosity=0)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_plan'})
def test_migrate_plan(self):
"""Tests migrate --plan output."""
out = io.StringIO()
# Show the plan up to the third migration.
call_command('migrate', 'migrations', '0003', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
'migrations.0001_initial\n'
' Create model Salamander\n'
' Raw Python operation -> Grow salamander tail.\n'
'migrations.0002_second\n'
' Create model Book\n'
" Raw SQL operation -> ['SELECT * FROM migrations_book']\n"
'migrations.0003_third\n'
' Create model Author\n'
" Raw SQL operation -> ['SELECT * FROM migrations_author']\n",
out.getvalue()
)
try:
# Migrate to the third migration.
call_command('migrate', 'migrations', '0003', verbosity=0)
out = io.StringIO()
# Show the plan for when there is nothing to apply.
call_command('migrate', 'migrations', '0003', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
' No planned migration operations.\n',
out.getvalue()
)
out = io.StringIO()
# Show the plan for reverse migration back to 0001.
call_command('migrate', 'migrations', '0001', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
'migrations.0003_third\n'
' Undo Create model Author\n'
" Raw SQL operation -> ['SELECT * FROM migrations_book']\n"
'migrations.0002_second\n'
' Undo Create model Book\n'
" Raw SQL operation -> ['SELECT * FROM migrations_salamand…\n",
out.getvalue()
)
out = io.StringIO()
# Show the migration plan to fourth, with truncated details.
call_command('migrate', 'migrations', '0004', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
'migrations.0004_fourth\n'
' Raw SQL operation -> SELECT * FROM migrations_author WHE…\n',
out.getvalue()
)
# Show the plan when an operation is irreversible.
# Migrate to the fourth migration.
call_command('migrate', 'migrations', '0004', verbosity=0)
out = io.StringIO()
call_command('migrate', 'migrations', '0003', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
'migrations.0004_fourth\n'
' Raw SQL operation -> IRREVERSIBLE\n',
out.getvalue()
)
out = io.StringIO()
call_command('migrate', 'migrations', '0005', plan=True, stdout=out, no_color=True)
# Operation is marked as irreversible only in the revert plan.
self.assertEqual(
'Planned operations:\n'
'migrations.0005_fifth\n'
' Raw Python operation\n'
' Raw Python operation\n'
' Raw Python operation -> Feed salamander.\n',
out.getvalue()
)
call_command('migrate', 'migrations', '0005', verbosity=0)
out = io.StringIO()
call_command('migrate', 'migrations', '0004', plan=True, stdout=out, no_color=True)
self.assertEqual(
'Planned operations:\n'
'migrations.0005_fifth\n'
' Raw Python operation -> IRREVERSIBLE\n'
' Raw Python operation -> IRREVERSIBLE\n'
' Raw Python operation\n',
out.getvalue()
)
finally:
# Cleanup by unmigrating everything: fake the irreversible, then
# migrate all to zero.
call_command('migrate', 'migrations', '0003', fake=True, verbosity=0)
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_empty'})
def test_showmigrations_no_migrations(self):
out = io.StringIO()
call_command('showmigrations', stdout=out, no_color=True)
self.assertEqual('migrations\n (no migrations)\n', out.getvalue().lower())
@override_settings(INSTALLED_APPS=['migrations.migrations_test_apps.unmigrated_app'])
def test_showmigrations_unmigrated_app(self):
out = io.StringIO()
call_command('showmigrations', 'unmigrated_app', stdout=out, no_color=True)
try:
self.assertEqual('unmigrated_app\n (no migrations)\n', out.getvalue().lower())
finally:
# unmigrated_app.SillyModel has a foreign key to
# 'migrations.Tribble', but that model is only defined in a
# migration, so the global app registry never sees it and the
# reference is left dangling. Remove it to avoid problems in
# subsequent tests.
apps._pending_operations.pop(('migrations', 'tribble'), None)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_empty"})
def test_showmigrations_plan_no_migrations(self):
"""
Tests --plan output of showmigrations command without migrations
"""
out = io.StringIO()
call_command('showmigrations', format='plan', stdout=out, no_color=True)
self.assertEqual('(no migrations)\n', out.getvalue().lower())
out = io.StringIO()
call_command('showmigrations', format='plan', stdout=out, verbosity=2, no_color=True)
self.assertEqual('(no migrations)\n', out.getvalue().lower())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed_complex"})
def test_showmigrations_plan_squashed(self):
"""
Tests --plan output of showmigrations command with squashed migrations.
"""
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out)
self.assertEqual(
"[ ] migrations.1_auto\n"
"[ ] migrations.2_auto\n"
"[ ] migrations.3_squashed_5\n"
"[ ] migrations.6_auto\n"
"[ ] migrations.7_auto\n",
out.getvalue().lower()
)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out, verbosity=2)
self.assertEqual(
"[ ] migrations.1_auto\n"
"[ ] migrations.2_auto ... (migrations.1_auto)\n"
"[ ] migrations.3_squashed_5 ... (migrations.2_auto)\n"
"[ ] migrations.6_auto ... (migrations.3_squashed_5)\n"
"[ ] migrations.7_auto ... (migrations.6_auto)\n",
out.getvalue().lower()
)
call_command("migrate", "migrations", "3_squashed_5", verbosity=0)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out)
self.assertEqual(
"[x] migrations.1_auto\n"
"[x] migrations.2_auto\n"
"[x] migrations.3_squashed_5\n"
"[ ] migrations.6_auto\n"
"[ ] migrations.7_auto\n",
out.getvalue().lower()
)
out = io.StringIO()
call_command("showmigrations", format='plan', stdout=out, verbosity=2)
self.assertEqual(
"[x] migrations.1_auto\n"
"[x] migrations.2_auto ... (migrations.1_auto)\n"
"[x] migrations.3_squashed_5 ... (migrations.2_auto)\n"
"[ ] migrations.6_auto ... (migrations.3_squashed_5)\n"
"[ ] migrations.7_auto ... (migrations.6_auto)\n",
out.getvalue().lower()
)
@override_settings(INSTALLED_APPS=[
'migrations.migrations_test_apps.mutate_state_b',
'migrations.migrations_test_apps.alter_fk.author_app',
'migrations.migrations_test_apps.alter_fk.book_app',
])
def test_showmigrations_plan_single_app_label(self):
"""
`showmigrations --plan app_label` output with a single app_label.
"""
# Single app with no dependencies on other apps.
out = io.StringIO()
call_command('showmigrations', 'mutate_state_b', format='plan', stdout=out)
self.assertEqual(
'[ ] mutate_state_b.0001_initial\n'
'[ ] mutate_state_b.0002_add_field\n',
out.getvalue()
)
# Single app with dependencies.
out = io.StringIO()
call_command('showmigrations', 'author_app', format='plan', stdout=out)
self.assertEqual(
'[ ] author_app.0001_initial\n'
'[ ] book_app.0001_initial\n'
'[ ] author_app.0002_alter_id\n',
out.getvalue()
)
# Some migrations already applied.
call_command('migrate', 'author_app', '0001', verbosity=0)
out = io.StringIO()
call_command('showmigrations', 'author_app', format='plan', stdout=out)
self.assertEqual(
'[X] author_app.0001_initial\n'
'[ ] book_app.0001_initial\n'
'[ ] author_app.0002_alter_id\n',
out.getvalue()
)
# Cleanup by unmigrating author_app.
call_command('migrate', 'author_app', 'zero', verbosity=0)
@override_settings(INSTALLED_APPS=[
'migrations.migrations_test_apps.mutate_state_b',
'migrations.migrations_test_apps.alter_fk.author_app',
'migrations.migrations_test_apps.alter_fk.book_app',
])
def test_showmigrations_plan_multiple_app_labels(self):
"""
`showmigrations --plan app_label` output with multiple app_labels.
"""
# Multiple apps: author_app depends on book_app; mutate_state_b doesn't
# depend on other apps.
out = io.StringIO()
call_command('showmigrations', 'mutate_state_b', 'author_app', format='plan', stdout=out)
self.assertEqual(
'[ ] author_app.0001_initial\n'
'[ ] book_app.0001_initial\n'
'[ ] author_app.0002_alter_id\n'
'[ ] mutate_state_b.0001_initial\n'
'[ ] mutate_state_b.0002_add_field\n',
out.getvalue()
)
# Multiple apps: args order shouldn't matter (the same result is
# expected as above).
out = io.StringIO()
call_command('showmigrations', 'author_app', 'mutate_state_b', format='plan', stdout=out)
self.assertEqual(
'[ ] author_app.0001_initial\n'
'[ ] book_app.0001_initial\n'
'[ ] author_app.0002_alter_id\n'
'[ ] mutate_state_b.0001_initial\n'
'[ ] mutate_state_b.0002_add_field\n',
out.getvalue()
)
@override_settings(INSTALLED_APPS=['migrations.migrations_test_apps.unmigrated_app'])
def test_showmigrations_plan_app_label_no_migrations(self):
out = io.StringIO()
call_command('showmigrations', 'unmigrated_app', format='plan', stdout=out, no_color=True)
try:
self.assertEqual('(no migrations)\n', out.getvalue())
finally:
# unmigrated_app.SillyModel has a foreign key to
# 'migrations.Tribble', but that model is only defined in a
# migration, so the global app registry never sees it and the
# reference is left dangling. Remove it to avoid problems in
# subsequent tests.
apps._pending_operations.pop(('migrations', 'tribble'), None)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_sqlmigrate_forwards(self):
"""
sqlmigrate outputs forward looking SQL.
"""
out = io.StringIO()
call_command("sqlmigrate", "migrations", "0001", stdout=out)
output = out.getvalue().lower()
index_tx_start = output.find(connection.ops.start_transaction_sql().lower())
index_op_desc_author = output.find('-- create model author')
index_create_table = output.find('create table')
index_op_desc_tribble = output.find('-- create model tribble')
index_op_desc_unique_together = output.find('-- alter unique_together')
index_tx_end = output.find(connection.ops.end_transaction_sql().lower())
if connection.features.can_rollback_ddl:
self.assertGreater(index_tx_start, -1, "Transaction start not found")
self.assertGreater(
index_tx_end, index_op_desc_unique_together,
"Transaction end not found or found before operation description (unique_together)"
)
self.assertGreater(
index_op_desc_author, index_tx_start,
"Operation description (author) not found or found before transaction start"
)
self.assertGreater(
index_create_table, index_op_desc_author,
"CREATE TABLE not found or found before operation description (author)"
)
self.assertGreater(
index_op_desc_tribble, index_create_table,
"Operation description (tribble) not found or found before CREATE TABLE (author)"
)
self.assertGreater(
index_op_desc_unique_together, index_op_desc_tribble,
"Operation description (unique_together) not found or found before operation description (tribble)"
)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_sqlmigrate_backwards(self):
"""
sqlmigrate outputs reverse looking SQL.
"""
# Cannot generate the reverse SQL unless we've applied the migration.
call_command("migrate", "migrations", verbosity=0)
out = io.StringIO()
call_command("sqlmigrate", "migrations", "0001", stdout=out, backwards=True)
output = out.getvalue().lower()
index_tx_start = output.find(connection.ops.start_transaction_sql().lower())
index_op_desc_unique_together = output.find('-- alter unique_together')
index_op_desc_tribble = output.find('-- create model tribble')
index_op_desc_author = output.find('-- create model author')
index_drop_table = output.rfind('drop table')
index_tx_end = output.find(connection.ops.end_transaction_sql().lower())
if connection.features.can_rollback_ddl:
self.assertGreater(index_tx_start, -1, "Transaction start not found")
self.assertGreater(
index_tx_end, index_op_desc_unique_together,
"Transaction end not found or found before DROP TABLE"
)
self.assertGreater(
index_op_desc_unique_together, index_tx_start,
"Operation description (unique_together) not found or found before transaction start"
)
self.assertGreater(
index_op_desc_tribble, index_op_desc_unique_together,
"Operation description (tribble) not found or found before operation description (unique_together)"
)
self.assertGreater(
index_op_desc_author, index_op_desc_tribble,
"Operation description (author) not found or found before operation description (tribble)"
)
self.assertGreater(
index_drop_table, index_op_desc_author,
"DROP TABLE not found or found before operation description (author)"
)
# Cleanup by unmigrating everything
call_command("migrate", "migrations", "zero", verbosity=0)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_non_atomic"})
def test_sqlmigrate_for_non_atomic_migration(self):
"""
Transaction wrappers aren't shown for non-atomic migrations.
"""
out = io.StringIO()
call_command("sqlmigrate", "migrations", "0001", stdout=out)
output = out.getvalue().lower()
queries = [q.strip() for q in output.splitlines()]
if connection.ops.start_transaction_sql():
self.assertNotIn(connection.ops.start_transaction_sql().lower(), queries)
self.assertNotIn(connection.ops.end_transaction_sql().lower(), queries)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations'})
def test_sqlmigrate_for_non_transactional_databases(self):
"""
Transaction wrappers aren't shown for databases that don't support
transactional DDL.
"""
out = io.StringIO()
with mock.patch.object(connection.features, 'can_rollback_ddl', False):
call_command('sqlmigrate', 'migrations', '0001', stdout=out)
output = out.getvalue().lower()
queries = [q.strip() for q in output.splitlines()]
start_transaction_sql = connection.ops.start_transaction_sql()
if start_transaction_sql:
self.assertNotIn(start_transaction_sql.lower(), queries)
self.assertNotIn(connection.ops.end_transaction_sql().lower(), queries)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_sqlmigrate_ambiguous_prefix_squashed_migrations(self):
msg = (
"More than one migration matches '0001' in app 'migrations'. "
"Please be more specific."
)
with self.assertRaisesMessage(CommandError, msg):
call_command('sqlmigrate', 'migrations', '0001')
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_sqlmigrate_squashed_migration(self):
out = io.StringIO()
call_command('sqlmigrate', 'migrations', '0001_squashed_0002', stdout=out)
output = out.getvalue().lower()
self.assertIn('-- create model author', output)
self.assertIn('-- create model book', output)
self.assertNotIn('-- create model tribble', output)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_sqlmigrate_replaced_migration(self):
out = io.StringIO()
call_command('sqlmigrate', 'migrations', '0001_initial', stdout=out)
output = out.getvalue().lower()
self.assertIn('-- create model author', output)
self.assertIn('-- create model tribble', output)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_no_operations'})
def test_migrations_no_operations(self):
err = io.StringIO()
call_command('sqlmigrate', 'migrations', '0001_initial', stderr=err)
self.assertEqual(err.getvalue(), 'No operations found.\n')
@override_settings(
INSTALLED_APPS=[
"migrations.migrations_test_apps.migrated_app",
"migrations.migrations_test_apps.migrated_unapplied_app",
"migrations.migrations_test_apps.unmigrated_app",
],
)
def test_regression_22823_unmigrated_fk_to_migrated_model(self):
"""
Assuming you have 3 apps, `A`, `B`, and `C`, such that:
* `A` has migrations
* `B` has a migration we want to apply
* `C` has no migrations, but has an FK to `A`
When we try to migrate "B", an exception occurs because the
"B" was not included in the ProjectState that is used to detect
soft-applied migrations (#22823).
"""
call_command('migrate', 'migrated_unapplied_app', verbosity=0)
# unmigrated_app.SillyModel has a foreign key to 'migrations.Tribble',
# but that model is only defined in a migration, so the global app
# registry never sees it and the reference is left dangling. Remove it
# to avoid problems in subsequent tests.
apps._pending_operations.pop(('migrations', 'tribble'), None)
@override_settings(INSTALLED_APPS=['migrations.migrations_test_apps.unmigrated_app_syncdb'])
def test_migrate_syncdb_deferred_sql_executed_with_schemaeditor(self):
"""
For an app without migrations, editor.execute() is used for executing
the syncdb deferred SQL.
"""
stdout = io.StringIO()
with mock.patch.object(BaseDatabaseSchemaEditor, 'execute') as execute:
call_command('migrate', run_syncdb=True, verbosity=1, stdout=stdout, no_color=True)
create_table_count = len([call for call in execute.mock_calls if 'CREATE TABLE' in str(call)])
self.assertEqual(create_table_count, 2)
# There's at least one deferred SQL for creating the foreign key
# index.
self.assertGreater(len(execute.mock_calls), 2)
stdout = stdout.getvalue()
self.assertIn('Synchronize unmigrated apps: unmigrated_app_syncdb', stdout)
self.assertIn('Creating tables...', stdout)
table_name = truncate_name('unmigrated_app_syncdb_classroom', connection.ops.max_name_length())
self.assertIn('Creating table %s' % table_name, stdout)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations'})
def test_migrate_syncdb_app_with_migrations(self):
msg = "Can't use run_syncdb with app 'migrations' as it has migrations."
with self.assertRaisesMessage(CommandError, msg):
call_command('migrate', 'migrations', run_syncdb=True, verbosity=0)
@override_settings(INSTALLED_APPS=[
'migrations.migrations_test_apps.unmigrated_app_syncdb',
'migrations.migrations_test_apps.unmigrated_app_simple',
])
def test_migrate_syncdb_app_label(self):
"""
Running migrate --run-syncdb with an app_label only creates tables for
the specified app.
"""
stdout = io.StringIO()
with mock.patch.object(BaseDatabaseSchemaEditor, 'execute') as execute:
call_command('migrate', 'unmigrated_app_syncdb', run_syncdb=True, stdout=stdout)
create_table_count = len([call for call in execute.mock_calls if 'CREATE TABLE' in str(call)])
self.assertEqual(create_table_count, 2)
self.assertGreater(len(execute.mock_calls), 2)
self.assertIn('Synchronize unmigrated app: unmigrated_app_syncdb', stdout.getvalue())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})
def test_migrate_record_replaced(self):
"""
Running a single squashed migration should record all of the original
replaced migrations as run.
"""
recorder = MigrationRecorder(connection)
out = io.StringIO()
call_command("migrate", "migrations", verbosity=0)
call_command("showmigrations", "migrations", stdout=out, no_color=True)
self.assertEqual(
'migrations\n'
' [x] 0001_squashed_0002 (2 squashed migrations)\n',
out.getvalue().lower()
)
applied_migrations = recorder.applied_migrations()
self.assertIn(("migrations", "0001_initial"), applied_migrations)
self.assertIn(("migrations", "0002_second"), applied_migrations)
self.assertIn(("migrations", "0001_squashed_0002"), applied_migrations)
# Rollback changes
call_command("migrate", "migrations", "zero", verbosity=0)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})
def test_migrate_record_squashed(self):
"""
Running migrate for a squashed migration should record as run
if all of the replaced migrations have been run (#25231).
"""
recorder = MigrationRecorder(connection)
recorder.record_applied("migrations", "0001_initial")
recorder.record_applied("migrations", "0002_second")
out = io.StringIO()
call_command('showmigrations', 'migrations', stdout=out, no_color=True)
self.assertEqual(
"migrations\n"
" [-] 0001_squashed_0002 (2 squashed migrations) "
"run 'manage.py migrate' to finish recording.\n",
out.getvalue().lower(),
)
out = io.StringIO()
call_command("migrate", "migrations", verbosity=0)
call_command("showmigrations", "migrations", stdout=out, no_color=True)
self.assertEqual(
'migrations\n'
' [x] 0001_squashed_0002 (2 squashed migrations)\n',
out.getvalue().lower()
)
self.assertIn(
("migrations", "0001_squashed_0002"),
recorder.applied_migrations()
)
# No changes were actually applied so there is nothing to rollback
def test_migrate_partially_applied_squashed_migration(self):
"""
Migrating to a squashed migration specified by name should succeed
even if it is partially applied.
"""
with self.temporary_migration_module(module='migrations.test_migrations'):
recorder = MigrationRecorder(connection)
try:
call_command('migrate', 'migrations', '0001_initial', verbosity=0)
call_command(
'squashmigrations',
'migrations',
'0002',
interactive=False,
verbosity=0,
)
call_command(
'migrate',
'migrations',
'0001_squashed_0002_second',
verbosity=0,
)
applied_migrations = recorder.applied_migrations()
self.assertIn(('migrations', '0002_second'), applied_migrations)
finally:
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_migrate_backward_to_squashed_migration(self):
try:
call_command('migrate', 'migrations', '0001_squashed_0002', verbosity=0)
self.assertTableExists('migrations_author')
self.assertTableExists('migrations_book')
call_command('migrate', 'migrations', '0001_initial', verbosity=0)
self.assertTableExists('migrations_author')
self.assertTableNotExists('migrations_book')
finally:
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations'})
def test_migrate_inconsistent_history(self):
"""
Running migrate with some migrations applied before their dependencies
should not be allowed.
"""
recorder = MigrationRecorder(connection)
recorder.record_applied("migrations", "0002_second")
msg = "Migration migrations.0002_second is applied before its dependency migrations.0001_initial"
with self.assertRaisesMessage(InconsistentMigrationHistory, msg):
call_command("migrate")
applied_migrations = recorder.applied_migrations()
self.assertNotIn(("migrations", "0001_initial"), applied_migrations)
@override_settings(INSTALLED_APPS=[
'migrations.migrations_test_apps.migrated_unapplied_app',
'migrations.migrations_test_apps.migrated_app',
])
def test_migrate_not_reflected_changes(self):
class NewModel1(models.Model):
class Meta():
app_label = 'migrated_app'
class NewModel2(models.Model):
class Meta():
app_label = 'migrated_unapplied_app'
out = io.StringIO()
try:
call_command('migrate', verbosity=0)
call_command('migrate', stdout=out, no_color=True)
self.assertEqual(
"operations to perform:\n"
" apply all migrations: migrated_app, migrated_unapplied_app\n"
"running migrations:\n"
" no migrations to apply.\n"
" your models in app(s): 'migrated_app', "
"'migrated_unapplied_app' have changes that are not yet "
"reflected in a migration, and so won't be applied.\n"
" run 'manage.py makemigrations' to make new migrations, and "
"then re-run 'manage.py migrate' to apply them.\n",
out.getvalue().lower(),
)
finally:
# Unmigrate everything.
call_command('migrate', 'migrated_app', 'zero', verbosity=0)
call_command('migrate', 'migrated_unapplied_app', 'zero', verbosity=0)
class MakeMigrationsTests(MigrationTestBase):
"""
Tests running the makemigrations command.
"""
def setUp(self):
super().setUp()
self._old_models = apps.app_configs['migrations'].models.copy()
def tearDown(self):
apps.app_configs['migrations'].models = self._old_models
apps.all_models['migrations'] = self._old_models
apps.clear_cache()
super().tearDown()
def test_files_content(self):
self.assertTableNotExists("migrations_unicodemodel")
apps.register_model('migrations', UnicodeModel)
with self.temporary_migration_module() as migration_dir:
call_command("makemigrations", "migrations", verbosity=0)
# Check for empty __init__.py file in migrations folder
init_file = os.path.join(migration_dir, "__init__.py")
self.assertTrue(os.path.exists(init_file))
with open(init_file) as fp:
content = fp.read()
self.assertEqual(content, '')
# Check for existing 0001_initial.py file in migration folder
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
with open(initial_file, encoding='utf-8') as fp:
content = fp.read()
self.assertIn('migrations.CreateModel', content)
self.assertIn('initial = True', content)
self.assertIn('úñí©óðé µóðéø', content) # Meta.verbose_name
self.assertIn('úñí©óðé µóðéøß', content) # Meta.verbose_name_plural
self.assertIn('ÚÑÍ¢ÓÐÉ', content) # title.verbose_name
self.assertIn('“Ðjáñgó”', content) # title.default
def test_makemigrations_order(self):
"""
makemigrations should recognize number-only migrations (0001.py).
"""
module = 'migrations.test_migrations_order'
with self.temporary_migration_module(module=module) as migration_dir:
if hasattr(importlib, 'invalidate_caches'):
# importlib caches os.listdir() on some platforms like macOS
# (#23850).
importlib.invalidate_caches()
call_command('makemigrations', 'migrations', '--empty', '-n', 'a', '-v', '0')
self.assertTrue(os.path.exists(os.path.join(migration_dir, '0002_a.py')))
def test_makemigrations_empty_connections(self):
empty_connections = ConnectionHandler({'default': {}})
with mock.patch('django.core.management.commands.makemigrations.connections', new=empty_connections):
# with no apps
out = io.StringIO()
call_command('makemigrations', stdout=out)
self.assertIn('No changes detected', out.getvalue())
# with an app
with self.temporary_migration_module() as migration_dir:
call_command('makemigrations', 'migrations', verbosity=0)
init_file = os.path.join(migration_dir, '__init__.py')
self.assertTrue(os.path.exists(init_file))
@override_settings(INSTALLED_APPS=['migrations', 'migrations2'])
def test_makemigrations_consistency_checks_respect_routers(self):
"""
The history consistency checks in makemigrations respect
settings.DATABASE_ROUTERS.
"""
def patched_has_table(migration_recorder):
if migration_recorder.connection is connections['other']:
raise Exception('Other connection')
else:
return mock.DEFAULT
self.assertTableNotExists('migrations_unicodemodel')
apps.register_model('migrations', UnicodeModel)
with mock.patch.object(
MigrationRecorder, 'has_table',
autospec=True, side_effect=patched_has_table) as has_table:
with self.temporary_migration_module() as migration_dir:
call_command("makemigrations", "migrations", verbosity=0)
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
self.assertEqual(has_table.call_count, 1) # 'default' is checked
# Router says not to migrate 'other' so consistency shouldn't
# be checked.
with self.settings(DATABASE_ROUTERS=['migrations.routers.TestRouter']):
call_command('makemigrations', 'migrations', verbosity=0)
self.assertEqual(has_table.call_count, 2) # 'default' again
# With a router that doesn't prohibit migrating 'other',
# consistency is checked.
with self.settings(DATABASE_ROUTERS=['migrations.routers.DefaultOtherRouter']):
with self.assertRaisesMessage(Exception, 'Other connection'):
call_command('makemigrations', 'migrations', verbosity=0)
self.assertEqual(has_table.call_count, 4) # 'default' and 'other'
# With a router that doesn't allow migrating on any database,
# no consistency checks are made.
with self.settings(DATABASE_ROUTERS=['migrations.routers.TestRouter']):
with mock.patch.object(TestRouter, 'allow_migrate', return_value=False) as allow_migrate:
call_command('makemigrations', 'migrations', verbosity=0)
allow_migrate.assert_any_call('other', 'migrations', model_name='UnicodeModel')
# allow_migrate() is called with the correct arguments.
self.assertGreater(len(allow_migrate.mock_calls), 0)
called_aliases = set()
for mock_call in allow_migrate.mock_calls:
_, call_args, call_kwargs = mock_call
connection_alias, app_name = call_args
called_aliases.add(connection_alias)
# Raises an error if invalid app_name/model_name occurs.
apps.get_app_config(app_name).get_model(call_kwargs['model_name'])
self.assertEqual(called_aliases, set(connections))
self.assertEqual(has_table.call_count, 4)
def test_failing_migration(self):
# If a migration fails to serialize, it shouldn't generate an empty file. #21280
apps.register_model('migrations', UnserializableModel)
with self.temporary_migration_module() as migration_dir:
with self.assertRaisesMessage(ValueError, 'Cannot serialize'):
call_command("makemigrations", "migrations", verbosity=0)
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertFalse(os.path.exists(initial_file))
def test_makemigrations_conflict_exit(self):
"""
makemigrations exits if it detects a conflict.
"""
with self.temporary_migration_module(module="migrations.test_migrations_conflict"):
with self.assertRaises(CommandError) as context:
call_command("makemigrations")
self.assertEqual(
str(context.exception),
"Conflicting migrations detected; multiple leaf nodes in the "
"migration graph: (0002_conflicting_second, 0002_second in "
"migrations).\n"
"To fix them run 'python manage.py makemigrations --merge'"
)
def test_makemigrations_merge_no_conflict(self):
"""
makemigrations exits if in merge mode with no conflicts.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations"):
call_command("makemigrations", merge=True, stdout=out)
self.assertIn("No conflicts detected to merge.", out.getvalue())
def test_makemigrations_empty_no_app_specified(self):
"""
makemigrations exits if no app is specified with 'empty' mode.
"""
msg = 'You must supply at least one app label when using --empty.'
with self.assertRaisesMessage(CommandError, msg):
call_command("makemigrations", empty=True)
def test_makemigrations_empty_migration(self):
"""
makemigrations properly constructs an empty migration.
"""
with self.temporary_migration_module() as migration_dir:
call_command("makemigrations", "migrations", empty=True, verbosity=0)
# Check for existing 0001_initial.py file in migration folder
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
with open(initial_file, encoding='utf-8') as fp:
content = fp.read()
# Remove all whitespace to check for empty dependencies and operations
content = content.replace(' ', '')
self.assertIn('dependencies=[\n]', content)
self.assertIn('operations=[\n]', content)
@override_settings(MIGRATION_MODULES={"migrations": None})
def test_makemigrations_disabled_migrations_for_app(self):
"""
makemigrations raises a nice error when migrations are disabled for an
app.
"""
msg = (
"Django can't create migrations for app 'migrations' because migrations "
"have been disabled via the MIGRATION_MODULES setting."
)
with self.assertRaisesMessage(ValueError, msg):
call_command("makemigrations", "migrations", empty=True, verbosity=0)
def test_makemigrations_no_changes_no_apps(self):
"""
makemigrations exits when there are no changes and no apps are specified.
"""
out = io.StringIO()
call_command("makemigrations", stdout=out)
self.assertIn("No changes detected", out.getvalue())
def test_makemigrations_no_changes(self):
"""
makemigrations exits when there are no changes to an app.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
call_command("makemigrations", "migrations", stdout=out)
self.assertIn("No changes detected in app 'migrations'", out.getvalue())
def test_makemigrations_no_apps_initial(self):
"""
makemigrations should detect initial is needed on empty migration
modules if no app provided.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_empty"):
call_command("makemigrations", stdout=out)
self.assertIn("0001_initial.py", out.getvalue())
def test_makemigrations_no_init(self):
"""Migration directories without an __init__.py file are allowed."""
out = io.StringIO()
with self.temporary_migration_module(module='migrations.test_migrations_no_init'):
call_command('makemigrations', stdout=out)
self.assertIn('0001_initial.py', out.getvalue())
def test_makemigrations_migrations_announce(self):
"""
makemigrations announces the migration at the default verbosity level.
"""
out = io.StringIO()
with self.temporary_migration_module():
call_command("makemigrations", "migrations", stdout=out)
self.assertIn("Migrations for 'migrations'", out.getvalue())
def test_makemigrations_no_common_ancestor(self):
"""
makemigrations fails to merge migrations with no common ancestor.
"""
with self.assertRaises(ValueError) as context:
with self.temporary_migration_module(module="migrations.test_migrations_no_ancestor"):
call_command("makemigrations", "migrations", merge=True)
exception_message = str(context.exception)
self.assertIn("Could not find common ancestor of", exception_message)
self.assertIn("0002_second", exception_message)
self.assertIn("0002_conflicting_second", exception_message)
def test_makemigrations_interactive_reject(self):
"""
makemigrations enters and exits interactive mode properly.
"""
# Monkeypatch interactive questioner to auto reject
with mock.patch('builtins.input', mock.Mock(return_value='N')):
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", name="merge", merge=True, interactive=True, verbosity=0)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
def test_makemigrations_interactive_accept(self):
"""
makemigrations enters interactive mode and merges properly.
"""
# Monkeypatch interactive questioner to auto accept
with mock.patch('builtins.input', mock.Mock(return_value='y')):
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", name="merge", merge=True, interactive=True, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertTrue(os.path.exists(merge_file))
self.assertIn("Created new merge migration", out.getvalue())
def test_makemigrations_default_merge_name(self):
out = io.StringIO()
with self.temporary_migration_module(
module='migrations.test_migrations_conflict'
) as migration_dir:
call_command('makemigrations', 'migrations', merge=True, interactive=False, stdout=out)
merge_file = os.path.join(
migration_dir,
'0003_merge_0002_conflicting_second_0002_second.py',
)
self.assertIs(os.path.exists(merge_file), True)
self.assertIn('Created new merge migration %s' % merge_file, out.getvalue())
@mock.patch('django.db.migrations.utils.datetime')
def test_makemigrations_auto_merge_name(self, mock_datetime):
mock_datetime.datetime.now.return_value = datetime.datetime(2016, 1, 2, 3, 4)
with mock.patch('builtins.input', mock.Mock(return_value='y')):
out = io.StringIO()
with self.temporary_migration_module(
module='migrations.test_migrations_conflict_long_name'
) as migration_dir:
call_command("makemigrations", "migrations", merge=True, interactive=True, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge_20160102_0304.py')
self.assertTrue(os.path.exists(merge_file))
self.assertIn("Created new merge migration", out.getvalue())
def test_makemigrations_non_interactive_not_null_addition(self):
"""
Non-interactive makemigrations fails when a default is missing on a
new not-null field.
"""
class SillyModel(models.Model):
silly_field = models.BooleanField(default=False)
silly_int = models.IntegerField()
class Meta:
app_label = "migrations"
with self.assertRaises(SystemExit):
with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=False)
self.assertIn(
"Field 'silly_int' on model 'sillymodel' not migrated: it is "
"impossible to add a non-nullable field without specifying a "
"default.",
out.getvalue(),
)
def test_makemigrations_interactive_not_null_addition(self):
"""
makemigrations messages when adding a NOT NULL field in interactive
mode.
"""
class Author(models.Model):
silly_field = models.BooleanField(null=False)
class Meta:
app_label = 'migrations'
input_msg = (
"It is impossible to add a non-nullable field 'silly_field' to "
"author without specifying a default. This is because the "
"database needs something to populate existing rows.\n"
"Please select a fix:\n"
" 1) Provide a one-off default now (will be set on all existing "
"rows with a null value for this column)\n"
" 2) Quit and manually define a default value in models.py."
)
with self.temporary_migration_module(module='migrations.test_migrations'):
# 2 - quit.
with mock.patch('builtins.input', return_value='2'):
with captured_stdout() as out, self.assertRaises(SystemExit):
call_command('makemigrations', 'migrations', interactive=True)
self.assertIn(input_msg, out.getvalue())
# 1 - provide a default.
with mock.patch('builtins.input', return_value='1'):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=True)
output = out.getvalue()
self.assertIn(input_msg, output)
self.assertIn('Please enter the default value as valid Python.', output)
self.assertIn(
'The datetime and django.utils.timezone modules are '
'available, so it is possible to provide e.g. timezone.now as '
'a value',
output,
)
self.assertIn("Type 'exit' to exit this prompt", output)
def test_makemigrations_non_interactive_not_null_alteration(self):
"""
Non-interactive makemigrations fails when a default is missing on a
field changed to not-null.
"""
class Author(models.Model):
name = models.CharField(max_length=255)
slug = models.SlugField()
age = models.IntegerField(default=0)
class Meta:
app_label = "migrations"
with self.temporary_migration_module(module="migrations.test_migrations"):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=False)
self.assertIn("Alter field slug on author", out.getvalue())
self.assertIn(
"Field 'slug' on model 'author' given a default of NOT PROVIDED "
"and must be corrected.",
out.getvalue(),
)
def test_makemigrations_interactive_not_null_alteration(self):
"""
makemigrations messages when changing a NULL field to NOT NULL in
interactive mode.
"""
class Author(models.Model):
slug = models.SlugField(null=False)
class Meta:
app_label = 'migrations'
input_msg = (
"It is impossible to change a nullable field 'slug' on author to "
"non-nullable without providing a default. This is because the "
"database needs something to populate existing rows.\n"
"Please select a fix:\n"
" 1) Provide a one-off default now (will be set on all existing "
"rows with a null value for this column)\n"
" 2) Ignore for now. Existing rows that contain NULL values will "
"have to be handled manually, for example with a RunPython or "
"RunSQL operation.\n"
" 3) Quit and manually define a default value in models.py."
)
with self.temporary_migration_module(module='migrations.test_migrations'):
# 3 - quit.
with mock.patch('builtins.input', return_value='3'):
with captured_stdout() as out, self.assertRaises(SystemExit):
call_command('makemigrations', 'migrations', interactive=True)
self.assertIn(input_msg, out.getvalue())
# 1 - provide a default.
with mock.patch('builtins.input', return_value='1'):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=True)
output = out.getvalue()
self.assertIn(input_msg, output)
self.assertIn('Please enter the default value as valid Python.', output)
self.assertIn(
'The datetime and django.utils.timezone modules are '
'available, so it is possible to provide e.g. timezone.now as '
'a value',
output,
)
self.assertIn("Type 'exit' to exit this prompt", output)
def test_makemigrations_non_interactive_no_model_rename(self):
"""
makemigrations adds and removes a possible model rename in
non-interactive mode.
"""
class RenamedModel(models.Model):
silly_field = models.BooleanField(default=False)
class Meta:
app_label = "migrations"
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", interactive=False, stdout=out)
self.assertIn("Delete model SillyModel", out.getvalue())
self.assertIn("Create model RenamedModel", out.getvalue())
def test_makemigrations_non_interactive_no_field_rename(self):
"""
makemigrations adds and removes a possible field rename in
non-interactive mode.
"""
class SillyModel(models.Model):
silly_rename = models.BooleanField(default=False)
class Meta:
app_label = "migrations"
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", interactive=False, stdout=out)
self.assertIn("Remove field silly_field from sillymodel", out.getvalue())
self.assertIn("Add field silly_rename to sillymodel", out.getvalue())
def test_makemigrations_handle_merge(self):
"""
makemigrations properly merges the conflicting migrations with --noinput.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", name="merge", merge=True, interactive=False, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertTrue(os.path.exists(merge_file))
output = out.getvalue()
self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output)
self.assertIn("Created new merge migration", output)
def test_makemigration_merge_dry_run(self):
"""
makemigrations respects --dry-run option when fixing migration
conflicts (#24427).
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command(
"makemigrations", "migrations", name="merge", dry_run=True,
merge=True, interactive=False, stdout=out,
)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
output = out.getvalue()
self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output)
self.assertNotIn("Created new merge migration", output)
def test_makemigration_merge_dry_run_verbosity_3(self):
"""
`makemigrations --merge --dry-run` writes the merge migration file to
stdout with `verbosity == 3` (#24427).
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command(
"makemigrations", "migrations", name="merge", dry_run=True,
merge=True, interactive=False, stdout=out, verbosity=3,
)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
output = out.getvalue()
self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output)
self.assertNotIn("Created new merge migration", output)
# Additional output caused by verbosity 3
# The complete merge migration file that would be written
self.assertIn("class Migration(migrations.Migration):", output)
self.assertIn("dependencies = [", output)
self.assertIn("('migrations', '0002_second')", output)
self.assertIn("('migrations', '0002_conflicting_second')", output)
self.assertIn("operations = [", output)
self.assertIn("]", output)
def test_makemigrations_dry_run(self):
"""
`makemigrations --dry-run` should not ask for defaults.
"""
class SillyModel(models.Model):
silly_field = models.BooleanField(default=False)
silly_date = models.DateField() # Added field without a default
class Meta:
app_label = "migrations"
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", dry_run=True, stdout=out)
# Output the expected changes directly, without asking for defaults
self.assertIn("Add field silly_date to sillymodel", out.getvalue())
def test_makemigrations_dry_run_verbosity_3(self):
"""
Allow `makemigrations --dry-run` to output the migrations file to
stdout (with verbosity == 3).
"""
class SillyModel(models.Model):
silly_field = models.BooleanField(default=False)
silly_char = models.CharField(default="")
class Meta:
app_label = "migrations"
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", dry_run=True, stdout=out, verbosity=3)
# Normal --dry-run output
self.assertIn("- Add field silly_char to sillymodel", out.getvalue())
# Additional output caused by verbosity 3
# The complete migrations file that would be written
self.assertIn("class Migration(migrations.Migration):", out.getvalue())
self.assertIn("dependencies = [", out.getvalue())
self.assertIn("('migrations', '0001_initial'),", out.getvalue())
self.assertIn("migrations.AddField(", out.getvalue())
self.assertIn("model_name='sillymodel',", out.getvalue())
self.assertIn("name='silly_char',", out.getvalue())
def test_makemigrations_migrations_modules_path_not_exist(self):
"""
makemigrations creates migrations when specifying a custom location
for migration files using MIGRATION_MODULES if the custom path
doesn't already exist.
"""
class SillyModel(models.Model):
silly_field = models.BooleanField(default=False)
class Meta:
app_label = "migrations"
out = io.StringIO()
migration_module = "migrations.test_migrations_path_doesnt_exist.foo.bar"
with self.temporary_migration_module(module=migration_module) as migration_dir:
call_command("makemigrations", "migrations", stdout=out)
# Migrations file is actually created in the expected path.
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
# Command output indicates the migration is created.
self.assertIn(" - Create model SillyModel", out.getvalue())
@override_settings(MIGRATION_MODULES={'migrations': 'some.nonexistent.path'})
def test_makemigrations_migrations_modules_nonexistent_toplevel_package(self):
msg = (
'Could not locate an appropriate location to create migrations '
'package some.nonexistent.path. Make sure the toplevel package '
'exists and can be imported.'
)
with self.assertRaisesMessage(ValueError, msg):
call_command('makemigrations', 'migrations', empty=True, verbosity=0)
def test_makemigrations_interactive_by_default(self):
"""
The user is prompted to merge by default if there are conflicts and
merge is True. Answer negative to differentiate it from behavior when
--noinput is specified.
"""
# Monkeypatch interactive questioner to auto reject
out = io.StringIO()
with mock.patch('builtins.input', mock.Mock(return_value='N')):
with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", name="merge", merge=True, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
# This will fail if interactive is False by default
self.assertFalse(os.path.exists(merge_file))
self.assertNotIn("Created new merge migration", out.getvalue())
@override_settings(
INSTALLED_APPS=[
"migrations",
"migrations.migrations_test_apps.unspecified_app_with_conflict"])
def test_makemigrations_unspecified_app_with_conflict_no_merge(self):
"""
makemigrations does not raise a CommandError when an unspecified app
has conflicting migrations.
"""
with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
call_command("makemigrations", "migrations", merge=False, verbosity=0)
@override_settings(
INSTALLED_APPS=[
"migrations.migrations_test_apps.migrated_app",
"migrations.migrations_test_apps.unspecified_app_with_conflict"])
def test_makemigrations_unspecified_app_with_conflict_merge(self):
"""
makemigrations does not create a merge for an unspecified app even if
it has conflicting migrations.
"""
# Monkeypatch interactive questioner to auto accept
with mock.patch('builtins.input', mock.Mock(return_value='y')):
out = io.StringIO()
with self.temporary_migration_module(app_label="migrated_app") as migration_dir:
call_command("makemigrations", "migrated_app", name="merge", merge=True, interactive=True, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
self.assertIn("No conflicts detected to merge.", out.getvalue())
@override_settings(
INSTALLED_APPS=[
"migrations.migrations_test_apps.migrated_app",
"migrations.migrations_test_apps.conflicting_app_with_dependencies"])
def test_makemigrations_merge_dont_output_dependency_operations(self):
"""
makemigrations --merge does not output any operations from apps that
don't belong to a given app.
"""
# Monkeypatch interactive questioner to auto accept
with mock.patch('builtins.input', mock.Mock(return_value='N')):
out = io.StringIO()
with mock.patch('django.core.management.color.supports_color', lambda *args: False):
call_command(
"makemigrations", "conflicting_app_with_dependencies",
merge=True, interactive=True, stdout=out
)
self.assertEqual(
out.getvalue().lower(),
'merging conflicting_app_with_dependencies\n'
' branch 0002_conflicting_second\n'
' - create model something\n'
' branch 0002_second\n'
' - delete model tribble\n'
' - remove field silly_field from author\n'
' - add field rating to author\n'
' - create model book\n'
)
def test_makemigrations_with_custom_name(self):
"""
makemigrations --name generate a custom migration name.
"""
with self.temporary_migration_module() as migration_dir:
def cmd(migration_count, migration_name, *args):
call_command("makemigrations", "migrations", "--verbosity", "0", "--name", migration_name, *args)
migration_file = os.path.join(migration_dir, "%s_%s.py" % (migration_count, migration_name))
# Check for existing migration file in migration folder
self.assertTrue(os.path.exists(migration_file))
with open(migration_file, encoding='utf-8') as fp:
content = fp.read()
content = content.replace(" ", "")
return content
# generate an initial migration
migration_name_0001 = "my_initial_migration"
content = cmd("0001", migration_name_0001)
self.assertIn("dependencies=[\n]", content)
# importlib caches os.listdir() on some platforms like macOS
# (#23850).
if hasattr(importlib, 'invalidate_caches'):
importlib.invalidate_caches()
# generate an empty migration
migration_name_0002 = "my_custom_migration"
content = cmd("0002", migration_name_0002, "--empty")
self.assertIn("dependencies=[\n('migrations','0001_%s'),\n]" % migration_name_0001, content)
self.assertIn("operations=[\n]", content)
def test_makemigrations_with_invalid_custom_name(self):
msg = 'The migration name must be a valid Python identifier.'
with self.assertRaisesMessage(CommandError, msg):
call_command('makemigrations', 'migrations', '--name', 'invalid name', '--empty')
def test_makemigrations_check(self):
"""
makemigrations --check should exit with a non-zero status when
there are changes to an app requiring migrations.
"""
with self.temporary_migration_module():
with self.assertRaises(SystemExit):
call_command("makemigrations", "--check", "migrations", verbosity=0)
with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
call_command("makemigrations", "--check", "migrations", verbosity=0)
def test_makemigrations_migration_path_output(self):
"""
makemigrations should print the relative paths to the migrations unless
they are outside of the current tree, in which case the absolute path
should be shown.
"""
out = io.StringIO()
apps.register_model('migrations', UnicodeModel)
with self.temporary_migration_module() as migration_dir:
call_command("makemigrations", "migrations", stdout=out)
self.assertIn(os.path.join(migration_dir, '0001_initial.py'), out.getvalue())
def test_makemigrations_migration_path_output_valueerror(self):
"""
makemigrations prints the absolute path if os.path.relpath() raises a
ValueError when it's impossible to obtain a relative path, e.g. on
Windows if Django is installed on a different drive than where the
migration files are created.
"""
out = io.StringIO()
with self.temporary_migration_module() as migration_dir:
with mock.patch('os.path.relpath', side_effect=ValueError):
call_command('makemigrations', 'migrations', stdout=out)
self.assertIn(os.path.join(migration_dir, '0001_initial.py'), out.getvalue())
def test_makemigrations_inconsistent_history(self):
"""
makemigrations should raise InconsistentMigrationHistory exception if
there are some migrations applied before their dependencies.
"""
recorder = MigrationRecorder(connection)
recorder.record_applied('migrations', '0002_second')
msg = "Migration migrations.0002_second is applied before its dependency migrations.0001_initial"
with self.temporary_migration_module(module="migrations.test_migrations"):
with self.assertRaisesMessage(InconsistentMigrationHistory, msg):
call_command("makemigrations")
def test_makemigrations_inconsistent_history_db_failure(self):
msg = (
"Got an error checking a consistent migration history performed "
"for database connection 'default': could not connect to server"
)
with mock.patch(
'django.db.migrations.loader.MigrationLoader.check_consistent_history',
side_effect=OperationalError('could not connect to server'),
):
with self.temporary_migration_module():
with self.assertWarns(RuntimeWarning) as cm:
call_command('makemigrations', verbosity=0)
self.assertEqual(str(cm.warning), msg)
@mock.patch('builtins.input', return_value='1')
@mock.patch('django.db.migrations.questioner.sys.stdin', mock.MagicMock(encoding=sys.getdefaultencoding()))
def test_makemigrations_auto_now_add_interactive(self, *args):
"""
makemigrations prompts the user when adding auto_now_add to an existing
model.
"""
class Entry(models.Model):
title = models.CharField(max_length=255)
creation_date = models.DateTimeField(auto_now_add=True)
class Meta:
app_label = 'migrations'
input_msg = (
"It is impossible to add the field 'creation_date' with "
"'auto_now_add=True' to entry without providing a default. This "
"is because the database needs something to populate existing "
"rows.\n\n"
" 1) Provide a one-off default now which will be set on all "
"existing rows\n"
" 2) Quit and manually define a default value in models.py."
)
# Monkeypatch interactive questioner to auto accept
with mock.patch('django.db.migrations.questioner.sys.stdout', new_callable=io.StringIO) as prompt_stdout:
out = io.StringIO()
with self.temporary_migration_module(module='migrations.test_auto_now_add'):
call_command('makemigrations', 'migrations', interactive=True, stdout=out)
output = out.getvalue()
prompt_output = prompt_stdout.getvalue()
self.assertIn(input_msg, prompt_output)
self.assertIn(
'Please enter the default value as valid Python.',
prompt_output,
)
self.assertIn(
"Accept the default 'timezone.now' by pressing 'Enter' or "
"provide another value.",
prompt_output,
)
self.assertIn("Type 'exit' to exit this prompt", prompt_output)
self.assertIn("Add field creation_date to entry", output)
@mock.patch('builtins.input', return_value='2')
def test_makemigrations_auto_now_add_interactive_quit(self, mock_input):
class Author(models.Model):
publishing_date = models.DateField(auto_now_add=True)
class Meta:
app_label = 'migrations'
with self.temporary_migration_module(module='migrations.test_migrations'):
with captured_stdout():
with self.assertRaises(SystemExit):
call_command('makemigrations', 'migrations', interactive=True)
def test_makemigrations_non_interactive_auto_now_add_addition(self):
"""
Non-interactive makemigrations fails when a default is missing on a
new field when auto_now_add=True.
"""
class Entry(models.Model):
creation_date = models.DateTimeField(auto_now_add=True)
class Meta:
app_label = 'migrations'
with self.temporary_migration_module(module='migrations.test_auto_now_add'):
with self.assertRaises(SystemExit), captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=False)
self.assertIn(
"Field 'creation_date' on model 'entry' not migrated: it is "
"impossible to add a field with 'auto_now_add=True' without "
"specifying a default.",
out.getvalue(),
)
def test_makemigrations_interactive_unique_callable_default_addition(self):
"""
makemigrations prompts the user when adding a unique field with
a callable default.
"""
class Book(models.Model):
created = models.DateTimeField(unique=True, default=timezone.now)
class Meta:
app_label = 'migrations'
version = get_docs_version()
input_msg = (
f'Callable default on unique field book.created will not generate '
f'unique values upon migrating.\n'
f'Please choose how to proceed:\n\n'
f' 1) Continue making this migration as the first step in writing '
f'a manual migration to generate unique values described here: '
f'https://docs.djangoproject.com/en/{version}/howto/'
f'writing-migrations/#migrations-that-add-unique-fields.\n'
f' 2) Quit and edit field options in models.py.\n'
)
with self.temporary_migration_module(module='migrations.test_migrations'):
# 2 - quit.
with mock.patch('builtins.input', return_value='2'):
with captured_stdout() as out, self.assertRaises(SystemExit):
call_command('makemigrations', 'migrations', interactive=True)
out_value = out.getvalue()
self.assertIn(input_msg, out_value)
self.assertNotIn('Add field created to book', out_value)
# 1 - continue.
with mock.patch('builtins.input', return_value='1'):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=True)
out_value = out.getvalue()
self.assertIn(input_msg, out_value)
self.assertIn('Add field created to book', out_value)
def test_makemigrations_non_interactive_unique_callable_default_addition(self):
class Book(models.Model):
created = models.DateTimeField(unique=True, default=timezone.now)
class Meta:
app_label = 'migrations'
with self.temporary_migration_module(module='migrations.test_migrations'):
with captured_stdout() as out:
call_command('makemigrations', 'migrations', interactive=False)
out_value = out.getvalue()
self.assertIn('Add field created to book', out_value)
@override_settings(
MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'},
)
def test_makemigrations_continues_number_sequence_after_squash(self):
with self.temporary_migration_module(module='migrations.test_migrations_squashed'):
with captured_stdout() as out:
call_command(
'makemigrations',
'migrations',
interactive=False,
empty=True,
)
out_value = out.getvalue()
self.assertIn('0003_auto', out_value)
class SquashMigrationsTests(MigrationTestBase):
"""
Tests running the squashmigrations command.
"""
def test_squashmigrations_squashes(self):
"""
squashmigrations squashes migrations.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations") as migration_dir:
call_command('squashmigrations', 'migrations', '0002', interactive=False, stdout=out, no_color=True)
squashed_migration_file = os.path.join(migration_dir, "0001_squashed_0002_second.py")
self.assertTrue(os.path.exists(squashed_migration_file))
self.assertEqual(
out.getvalue(),
'Will squash the following migrations:\n'
' - 0001_initial\n'
' - 0002_second\n'
'Optimizing...\n'
' Optimized from 8 operations to 2 operations.\n'
'Created new squashed migration %s\n'
' You should commit this migration but leave the old ones in place;\n'
' the new migration will be used for new installs. Once you are sure\n'
' all instances of the codebase have applied the migrations you squashed,\n'
' you can delete them.\n' % squashed_migration_file
)
def test_squashmigrations_initial_attribute(self):
with self.temporary_migration_module(module="migrations.test_migrations") as migration_dir:
call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=0)
squashed_migration_file = os.path.join(migration_dir, "0001_squashed_0002_second.py")
with open(squashed_migration_file, encoding='utf-8') as fp:
content = fp.read()
self.assertIn("initial = True", content)
def test_squashmigrations_optimizes(self):
"""
squashmigrations optimizes operations.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations"):
call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=1, stdout=out)
self.assertIn("Optimized from 8 operations to 2 operations.", out.getvalue())
def test_ticket_23799_squashmigrations_no_optimize(self):
"""
squashmigrations --no-optimize doesn't optimize operations.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations"):
call_command("squashmigrations", "migrations", "0002",
interactive=False, verbosity=1, no_optimize=True, stdout=out)
self.assertIn("Skipping optimization", out.getvalue())
def test_squashmigrations_valid_start(self):
"""
squashmigrations accepts a starting migration.
"""
out = io.StringIO()
with self.temporary_migration_module(module="migrations.test_migrations_no_changes") as migration_dir:
call_command("squashmigrations", "migrations", "0002", "0003",
interactive=False, verbosity=1, stdout=out)
squashed_migration_file = os.path.join(migration_dir, "0002_second_squashed_0003_third.py")
with open(squashed_migration_file, encoding='utf-8') as fp:
content = fp.read()
self.assertIn(" ('migrations', '0001_initial')", content)
self.assertNotIn("initial = True", content)
out = out.getvalue()
self.assertNotIn(" - 0001_initial", out)
self.assertIn(" - 0002_second", out)
self.assertIn(" - 0003_third", out)
def test_squashmigrations_invalid_start(self):
"""
squashmigrations doesn't accept a starting migration after the ending migration.
"""
with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
msg = (
"The migration 'migrations.0003_third' cannot be found. Maybe "
"it comes after the migration 'migrations.0002_second'"
)
with self.assertRaisesMessage(CommandError, msg):
call_command("squashmigrations", "migrations", "0003", "0002", interactive=False, verbosity=0)
def test_squashed_name_with_start_migration_name(self):
"""--squashed-name specifies the new migration's name."""
squashed_name = 'squashed_name'
with self.temporary_migration_module(module='migrations.test_migrations') as migration_dir:
call_command(
'squashmigrations', 'migrations', '0001', '0002',
squashed_name=squashed_name, interactive=False, verbosity=0,
)
squashed_migration_file = os.path.join(migration_dir, '0001_%s.py' % squashed_name)
self.assertTrue(os.path.exists(squashed_migration_file))
def test_squashed_name_without_start_migration_name(self):
"""--squashed-name also works if a start migration is omitted."""
squashed_name = 'squashed_name'
with self.temporary_migration_module(module="migrations.test_migrations") as migration_dir:
call_command(
'squashmigrations', 'migrations', '0001',
squashed_name=squashed_name, interactive=False, verbosity=0,
)
squashed_migration_file = os.path.join(migration_dir, '0001_%s.py' % squashed_name)
self.assertTrue(os.path.exists(squashed_migration_file))
def test_squashed_name_exists(self):
msg = 'Migration 0001_initial already exists. Use a different name.'
with self.temporary_migration_module(module='migrations.test_migrations'):
with self.assertRaisesMessage(CommandError, msg):
call_command(
'squashmigrations', 'migrations', '0001', '0002',
squashed_name='initial', interactive=False, verbosity=0,
)
class AppLabelErrorTests(TestCase):
"""
This class inherits TestCase because MigrationTestBase uses
`available_apps = ['migrations']` which means that it's the only installed
app. 'django.contrib.auth' must be in INSTALLED_APPS for some of these
tests.
"""
nonexistent_app_error = "No installed app with label 'nonexistent_app'."
did_you_mean_auth_error = (
"No installed app with label 'django.contrib.auth'. Did you mean "
"'auth'?"
)
def test_makemigrations_nonexistent_app_label(self):
err = io.StringIO()
with self.assertRaises(SystemExit):
call_command('makemigrations', 'nonexistent_app', stderr=err)
self.assertIn(self.nonexistent_app_error, err.getvalue())
def test_makemigrations_app_name_specified_as_label(self):
err = io.StringIO()
with self.assertRaises(SystemExit):
call_command('makemigrations', 'django.contrib.auth', stderr=err)
self.assertIn(self.did_you_mean_auth_error, err.getvalue())
def test_migrate_nonexistent_app_label(self):
with self.assertRaisesMessage(CommandError, self.nonexistent_app_error):
call_command('migrate', 'nonexistent_app')
def test_migrate_app_name_specified_as_label(self):
with self.assertRaisesMessage(CommandError, self.did_you_mean_auth_error):
call_command('migrate', 'django.contrib.auth')
def test_showmigrations_nonexistent_app_label(self):
err = io.StringIO()
with self.assertRaises(SystemExit):
call_command('showmigrations', 'nonexistent_app', stderr=err)
self.assertIn(self.nonexistent_app_error, err.getvalue())
def test_showmigrations_app_name_specified_as_label(self):
err = io.StringIO()
with self.assertRaises(SystemExit):
call_command('showmigrations', 'django.contrib.auth', stderr=err)
self.assertIn(self.did_you_mean_auth_error, err.getvalue())
def test_sqlmigrate_nonexistent_app_label(self):
with self.assertRaisesMessage(CommandError, self.nonexistent_app_error):
call_command('sqlmigrate', 'nonexistent_app', '0002')
def test_sqlmigrate_app_name_specified_as_label(self):
with self.assertRaisesMessage(CommandError, self.did_you_mean_auth_error):
call_command('sqlmigrate', 'django.contrib.auth', '0002')
def test_squashmigrations_nonexistent_app_label(self):
with self.assertRaisesMessage(CommandError, self.nonexistent_app_error):
call_command('squashmigrations', 'nonexistent_app', '0002')
def test_squashmigrations_app_name_specified_as_label(self):
with self.assertRaisesMessage(CommandError, self.did_you_mean_auth_error):
call_command('squashmigrations', 'django.contrib.auth', '0002')
|
6b0da4fbc1517a1b38cfafe0dc5f0a3aac9f192778f1dde8dd1111f70e993fa1 | from django.core.exceptions import FieldDoesNotExist
from django.db import (
IntegrityError, connection, migrations, models, transaction,
)
from django.db.migrations.migration import Migration
from django.db.migrations.operations.fields import FieldOperation
from django.db.migrations.state import ModelState, ProjectState
from django.db.models.functions import Abs
from django.db.transaction import atomic
from django.test import SimpleTestCase, override_settings, skipUnlessDBFeature
from django.test.utils import CaptureQueriesContext
from .models import FoodManager, FoodQuerySet, UnicodeModel
from .test_base import OperationTestBase
class Mixin:
pass
class OperationTests(OperationTestBase):
"""
Tests running the operations and making sure they do what they say they do.
Each test looks at their state changing, and then their database operation -
both forwards and backwards.
"""
def test_create_model(self):
"""
Tests the CreateModel operation.
Most other tests use this operation as part of setup, so check failures here first.
"""
operation = migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.IntegerField(default=1)),
],
)
self.assertEqual(operation.describe(), "Create model Pony")
self.assertEqual(operation.migration_name_fragment, 'pony')
# Test the state alteration
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards("test_crmo", new_state)
self.assertEqual(new_state.models["test_crmo", "pony"].name, "Pony")
self.assertEqual(len(new_state.models["test_crmo", "pony"].fields), 2)
# Test the database alteration
self.assertTableNotExists("test_crmo_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crmo", editor, project_state, new_state)
self.assertTableExists("test_crmo_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crmo", editor, new_state, project_state)
self.assertTableNotExists("test_crmo_pony")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "CreateModel")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["fields", "name"])
# And default manager not in set
operation = migrations.CreateModel("Foo", fields=[], managers=[("objects", models.Manager())])
definition = operation.deconstruct()
self.assertNotIn('managers', definition[2])
def test_create_model_with_duplicate_field_name(self):
with self.assertRaisesMessage(ValueError, 'Found duplicate value pink in CreateModel fields argument.'):
migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.TextField()),
("pink", models.IntegerField(default=1)),
],
)
def test_create_model_with_duplicate_base(self):
message = 'Found duplicate value test_crmo.pony in CreateModel bases argument.'
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=("test_crmo.Pony", "test_crmo.Pony",),
)
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=("test_crmo.Pony", "test_crmo.pony",),
)
message = 'Found duplicate value migrations.unicodemodel in CreateModel bases argument.'
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, UnicodeModel,),
)
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, 'migrations.unicodemodel',),
)
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, 'migrations.UnicodeModel',),
)
message = "Found duplicate value <class 'django.db.models.base.Model'> in CreateModel bases argument."
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=(models.Model, models.Model,),
)
message = "Found duplicate value <class 'migrations.test_operations.Mixin'> in CreateModel bases argument."
with self.assertRaisesMessage(ValueError, message):
migrations.CreateModel(
"Pony",
fields=[],
bases=(Mixin, Mixin,),
)
def test_create_model_with_duplicate_manager_name(self):
with self.assertRaisesMessage(ValueError, 'Found duplicate value objects in CreateModel managers argument.'):
migrations.CreateModel(
"Pony",
fields=[],
managers=[
("objects", models.Manager()),
("objects", models.Manager()),
],
)
def test_create_model_with_unique_after(self):
"""
Tests the CreateModel operation directly followed by an
AlterUniqueTogether (bug #22844 - sqlite remake issues)
"""
operation1 = migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.IntegerField(default=1)),
],
)
operation2 = migrations.CreateModel(
"Rider",
[
("id", models.AutoField(primary_key=True)),
("number", models.IntegerField(default=1)),
("pony", models.ForeignKey("test_crmoua.Pony", models.CASCADE)),
],
)
operation3 = migrations.AlterUniqueTogether(
"Rider",
[
("number", "pony"),
],
)
# Test the database alteration
project_state = ProjectState()
self.assertTableNotExists("test_crmoua_pony")
self.assertTableNotExists("test_crmoua_rider")
with connection.schema_editor() as editor:
new_state = project_state.clone()
operation1.state_forwards("test_crmoua", new_state)
operation1.database_forwards("test_crmoua", editor, project_state, new_state)
project_state, new_state = new_state, new_state.clone()
operation2.state_forwards("test_crmoua", new_state)
operation2.database_forwards("test_crmoua", editor, project_state, new_state)
project_state, new_state = new_state, new_state.clone()
operation3.state_forwards("test_crmoua", new_state)
operation3.database_forwards("test_crmoua", editor, project_state, new_state)
self.assertTableExists("test_crmoua_pony")
self.assertTableExists("test_crmoua_rider")
def test_create_model_m2m(self):
"""
Test the creation of a model with a ManyToMany field and the
auto-created "through" model.
"""
project_state = self.set_up_test_model("test_crmomm")
operation = migrations.CreateModel(
"Stable",
[
("id", models.AutoField(primary_key=True)),
("ponies", models.ManyToManyField("Pony", related_name="stables"))
]
)
# Test the state alteration
new_state = project_state.clone()
operation.state_forwards("test_crmomm", new_state)
# Test the database alteration
self.assertTableNotExists("test_crmomm_stable_ponies")
with connection.schema_editor() as editor:
operation.database_forwards("test_crmomm", editor, project_state, new_state)
self.assertTableExists("test_crmomm_stable")
self.assertTableExists("test_crmomm_stable_ponies")
self.assertColumnNotExists("test_crmomm_stable", "ponies")
# Make sure the M2M field actually works
with atomic():
Pony = new_state.apps.get_model("test_crmomm", "Pony")
Stable = new_state.apps.get_model("test_crmomm", "Stable")
stable = Stable.objects.create()
p1 = Pony.objects.create(pink=False, weight=4.55)
p2 = Pony.objects.create(pink=True, weight=5.43)
stable.ponies.add(p1, p2)
self.assertEqual(stable.ponies.count(), 2)
stable.ponies.all().delete()
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crmomm", editor, new_state, project_state)
self.assertTableNotExists("test_crmomm_stable")
self.assertTableNotExists("test_crmomm_stable_ponies")
def test_create_model_inheritance(self):
"""
Tests the CreateModel operation on a multi-table inheritance setup.
"""
project_state = self.set_up_test_model("test_crmoih")
# Test the state alteration
operation = migrations.CreateModel(
"ShetlandPony",
[
('pony_ptr', models.OneToOneField(
'test_crmoih.Pony',
models.CASCADE,
auto_created=True,
primary_key=True,
to_field='id',
serialize=False,
)),
("cuteness", models.IntegerField(default=1)),
],
)
new_state = project_state.clone()
operation.state_forwards("test_crmoih", new_state)
self.assertIn(("test_crmoih", "shetlandpony"), new_state.models)
# Test the database alteration
self.assertTableNotExists("test_crmoih_shetlandpony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crmoih", editor, project_state, new_state)
self.assertTableExists("test_crmoih_shetlandpony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crmoih", editor, new_state, project_state)
self.assertTableNotExists("test_crmoih_shetlandpony")
def test_create_proxy_model(self):
"""
CreateModel ignores proxy models.
"""
project_state = self.set_up_test_model("test_crprmo")
# Test the state alteration
operation = migrations.CreateModel(
"ProxyPony",
[],
options={"proxy": True},
bases=("test_crprmo.Pony",),
)
self.assertEqual(operation.describe(), "Create proxy model ProxyPony")
new_state = project_state.clone()
operation.state_forwards("test_crprmo", new_state)
self.assertIn(("test_crprmo", "proxypony"), new_state.models)
# Test the database alteration
self.assertTableNotExists("test_crprmo_proxypony")
self.assertTableExists("test_crprmo_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crprmo", editor, project_state, new_state)
self.assertTableNotExists("test_crprmo_proxypony")
self.assertTableExists("test_crprmo_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crprmo", editor, new_state, project_state)
self.assertTableNotExists("test_crprmo_proxypony")
self.assertTableExists("test_crprmo_pony")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "CreateModel")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["bases", "fields", "name", "options"])
def test_create_unmanaged_model(self):
"""
CreateModel ignores unmanaged models.
"""
project_state = self.set_up_test_model("test_crummo")
# Test the state alteration
operation = migrations.CreateModel(
"UnmanagedPony",
[],
options={"proxy": True},
bases=("test_crummo.Pony",),
)
self.assertEqual(operation.describe(), "Create proxy model UnmanagedPony")
new_state = project_state.clone()
operation.state_forwards("test_crummo", new_state)
self.assertIn(("test_crummo", "unmanagedpony"), new_state.models)
# Test the database alteration
self.assertTableNotExists("test_crummo_unmanagedpony")
self.assertTableExists("test_crummo_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crummo", editor, project_state, new_state)
self.assertTableNotExists("test_crummo_unmanagedpony")
self.assertTableExists("test_crummo_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crummo", editor, new_state, project_state)
self.assertTableNotExists("test_crummo_unmanagedpony")
self.assertTableExists("test_crummo_pony")
@skipUnlessDBFeature('supports_table_check_constraints')
def test_create_model_with_constraint(self):
where = models.Q(pink__gt=2)
check_constraint = models.CheckConstraint(check=where, name='test_constraint_pony_pink_gt_2')
operation = migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.IntegerField(default=3)),
],
options={'constraints': [check_constraint]},
)
# Test the state alteration
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards("test_crmo", new_state)
self.assertEqual(len(new_state.models['test_crmo', 'pony'].options['constraints']), 1)
# Test database alteration
self.assertTableNotExists("test_crmo_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crmo", editor, project_state, new_state)
self.assertTableExists("test_crmo_pony")
with connection.cursor() as cursor:
with self.assertRaises(IntegrityError):
cursor.execute("INSERT INTO test_crmo_pony (id, pink) VALUES (1, 1)")
# Test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crmo", editor, new_state, project_state)
self.assertTableNotExists("test_crmo_pony")
# Test deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "CreateModel")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2]['options']['constraints'], [check_constraint])
def test_create_model_with_partial_unique_constraint(self):
partial_unique_constraint = models.UniqueConstraint(
fields=['pink'],
condition=models.Q(weight__gt=5),
name='test_constraint_pony_pink_for_weight_gt_5_uniq',
)
operation = migrations.CreateModel(
'Pony',
[
('id', models.AutoField(primary_key=True)),
('pink', models.IntegerField(default=3)),
('weight', models.FloatField()),
],
options={'constraints': [partial_unique_constraint]},
)
# Test the state alteration
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards('test_crmo', new_state)
self.assertEqual(len(new_state.models['test_crmo', 'pony'].options['constraints']), 1)
# Test database alteration
self.assertTableNotExists('test_crmo_pony')
with connection.schema_editor() as editor:
operation.database_forwards('test_crmo', editor, project_state, new_state)
self.assertTableExists('test_crmo_pony')
# Test constraint works
Pony = new_state.apps.get_model('test_crmo', 'Pony')
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=6.0)
if connection.features.supports_partial_indexes:
with self.assertRaises(IntegrityError):
Pony.objects.create(pink=1, weight=7.0)
else:
Pony.objects.create(pink=1, weight=7.0)
# Test reversal
with connection.schema_editor() as editor:
operation.database_backwards('test_crmo', editor, new_state, project_state)
self.assertTableNotExists('test_crmo_pony')
# Test deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], 'CreateModel')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2]['options']['constraints'], [partial_unique_constraint])
def test_create_model_with_deferred_unique_constraint(self):
deferred_unique_constraint = models.UniqueConstraint(
fields=['pink'],
name='deferrable_pink_constraint',
deferrable=models.Deferrable.DEFERRED,
)
operation = migrations.CreateModel(
'Pony',
[
('id', models.AutoField(primary_key=True)),
('pink', models.IntegerField(default=3)),
],
options={'constraints': [deferred_unique_constraint]},
)
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards('test_crmo', new_state)
self.assertEqual(len(new_state.models['test_crmo', 'pony'].options['constraints']), 1)
self.assertTableNotExists('test_crmo_pony')
# Create table.
with connection.schema_editor() as editor:
operation.database_forwards('test_crmo', editor, project_state, new_state)
self.assertTableExists('test_crmo_pony')
Pony = new_state.apps.get_model('test_crmo', 'Pony')
Pony.objects.create(pink=1)
if connection.features.supports_deferrable_unique_constraints:
# Unique constraint is deferred.
with transaction.atomic():
obj = Pony.objects.create(pink=1)
obj.pink = 2
obj.save()
# Constraint behavior can be changed with SET CONSTRAINTS.
with self.assertRaises(IntegrityError):
with transaction.atomic(), connection.cursor() as cursor:
quoted_name = connection.ops.quote_name(deferred_unique_constraint.name)
cursor.execute('SET CONSTRAINTS %s IMMEDIATE' % quoted_name)
obj = Pony.objects.create(pink=1)
obj.pink = 3
obj.save()
else:
Pony.objects.create(pink=1)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards('test_crmo', editor, new_state, project_state)
self.assertTableNotExists('test_crmo_pony')
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'CreateModel')
self.assertEqual(definition[1], [])
self.assertEqual(
definition[2]['options']['constraints'],
[deferred_unique_constraint],
)
@skipUnlessDBFeature('supports_covering_indexes')
def test_create_model_with_covering_unique_constraint(self):
covering_unique_constraint = models.UniqueConstraint(
fields=['pink'],
include=['weight'],
name='test_constraint_pony_pink_covering_weight',
)
operation = migrations.CreateModel(
'Pony',
[
('id', models.AutoField(primary_key=True)),
('pink', models.IntegerField(default=3)),
('weight', models.FloatField()),
],
options={'constraints': [covering_unique_constraint]},
)
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards('test_crmo', new_state)
self.assertEqual(len(new_state.models['test_crmo', 'pony'].options['constraints']), 1)
self.assertTableNotExists('test_crmo_pony')
# Create table.
with connection.schema_editor() as editor:
operation.database_forwards('test_crmo', editor, project_state, new_state)
self.assertTableExists('test_crmo_pony')
Pony = new_state.apps.get_model('test_crmo', 'Pony')
Pony.objects.create(pink=1, weight=4.0)
with self.assertRaises(IntegrityError):
Pony.objects.create(pink=1, weight=7.0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards('test_crmo', editor, new_state, project_state)
self.assertTableNotExists('test_crmo_pony')
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'CreateModel')
self.assertEqual(definition[1], [])
self.assertEqual(
definition[2]['options']['constraints'],
[covering_unique_constraint],
)
def test_create_model_managers(self):
"""
The managers on a model are set.
"""
project_state = self.set_up_test_model("test_cmoma")
# Test the state alteration
operation = migrations.CreateModel(
"Food",
fields=[
("id", models.AutoField(primary_key=True)),
],
managers=[
("food_qs", FoodQuerySet.as_manager()),
("food_mgr", FoodManager("a", "b")),
("food_mgr_kwargs", FoodManager("x", "y", 3, 4)),
]
)
self.assertEqual(operation.describe(), "Create model Food")
new_state = project_state.clone()
operation.state_forwards("test_cmoma", new_state)
self.assertIn(("test_cmoma", "food"), new_state.models)
managers = new_state.models["test_cmoma", "food"].managers
self.assertEqual(managers[0][0], "food_qs")
self.assertIsInstance(managers[0][1], models.Manager)
self.assertEqual(managers[1][0], "food_mgr")
self.assertIsInstance(managers[1][1], FoodManager)
self.assertEqual(managers[1][1].args, ("a", "b", 1, 2))
self.assertEqual(managers[2][0], "food_mgr_kwargs")
self.assertIsInstance(managers[2][1], FoodManager)
self.assertEqual(managers[2][1].args, ("x", "y", 3, 4))
def test_delete_model(self):
"""
Tests the DeleteModel operation.
"""
project_state = self.set_up_test_model("test_dlmo")
# Test the state alteration
operation = migrations.DeleteModel("Pony")
self.assertEqual(operation.describe(), "Delete model Pony")
self.assertEqual(operation.migration_name_fragment, 'delete_pony')
new_state = project_state.clone()
operation.state_forwards("test_dlmo", new_state)
self.assertNotIn(("test_dlmo", "pony"), new_state.models)
# Test the database alteration
self.assertTableExists("test_dlmo_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_dlmo", editor, project_state, new_state)
self.assertTableNotExists("test_dlmo_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_dlmo", editor, new_state, project_state)
self.assertTableExists("test_dlmo_pony")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "DeleteModel")
self.assertEqual(definition[1], [])
self.assertEqual(list(definition[2]), ["name"])
def test_delete_proxy_model(self):
"""
Tests the DeleteModel operation ignores proxy models.
"""
project_state = self.set_up_test_model("test_dlprmo", proxy_model=True)
# Test the state alteration
operation = migrations.DeleteModel("ProxyPony")
new_state = project_state.clone()
operation.state_forwards("test_dlprmo", new_state)
self.assertIn(("test_dlprmo", "proxypony"), project_state.models)
self.assertNotIn(("test_dlprmo", "proxypony"), new_state.models)
# Test the database alteration
self.assertTableExists("test_dlprmo_pony")
self.assertTableNotExists("test_dlprmo_proxypony")
with connection.schema_editor() as editor:
operation.database_forwards("test_dlprmo", editor, project_state, new_state)
self.assertTableExists("test_dlprmo_pony")
self.assertTableNotExists("test_dlprmo_proxypony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_dlprmo", editor, new_state, project_state)
self.assertTableExists("test_dlprmo_pony")
self.assertTableNotExists("test_dlprmo_proxypony")
def test_delete_mti_model(self):
project_state = self.set_up_test_model('test_dlmtimo', mti_model=True)
# Test the state alteration
operation = migrations.DeleteModel('ShetlandPony')
new_state = project_state.clone()
operation.state_forwards('test_dlmtimo', new_state)
self.assertIn(('test_dlmtimo', 'shetlandpony'), project_state.models)
self.assertNotIn(('test_dlmtimo', 'shetlandpony'), new_state.models)
# Test the database alteration
self.assertTableExists('test_dlmtimo_pony')
self.assertTableExists('test_dlmtimo_shetlandpony')
self.assertColumnExists('test_dlmtimo_shetlandpony', 'pony_ptr_id')
with connection.schema_editor() as editor:
operation.database_forwards('test_dlmtimo', editor, project_state, new_state)
self.assertTableExists('test_dlmtimo_pony')
self.assertTableNotExists('test_dlmtimo_shetlandpony')
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards('test_dlmtimo', editor, new_state, project_state)
self.assertTableExists('test_dlmtimo_pony')
self.assertTableExists('test_dlmtimo_shetlandpony')
self.assertColumnExists('test_dlmtimo_shetlandpony', 'pony_ptr_id')
def test_rename_model(self):
"""
Tests the RenameModel operation.
"""
project_state = self.set_up_test_model("test_rnmo", related_model=True)
# Test the state alteration
operation = migrations.RenameModel("Pony", "Horse")
self.assertEqual(operation.describe(), "Rename model Pony to Horse")
self.assertEqual(operation.migration_name_fragment, 'rename_pony_horse')
# Test initial state and database
self.assertIn(("test_rnmo", "pony"), project_state.models)
self.assertNotIn(("test_rnmo", "horse"), project_state.models)
self.assertTableExists("test_rnmo_pony")
self.assertTableNotExists("test_rnmo_horse")
if connection.features.supports_foreign_keys:
self.assertFKExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_pony", "id"))
self.assertFKNotExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_horse", "id"))
# Migrate forwards
new_state = project_state.clone()
atomic_rename = connection.features.supports_atomic_references_rename
new_state = self.apply_operations("test_rnmo", new_state, [operation], atomic=atomic_rename)
# Test new state and database
self.assertNotIn(("test_rnmo", "pony"), new_state.models)
self.assertIn(("test_rnmo", "horse"), new_state.models)
# RenameModel also repoints all incoming FKs and M2Ms
self.assertEqual(
new_state.models['test_rnmo', 'rider'].fields['pony'].remote_field.model,
'test_rnmo.Horse',
)
self.assertTableNotExists("test_rnmo_pony")
self.assertTableExists("test_rnmo_horse")
if connection.features.supports_foreign_keys:
self.assertFKNotExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_pony", "id"))
self.assertFKExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_horse", "id"))
# Migrate backwards
original_state = self.unapply_operations("test_rnmo", project_state, [operation], atomic=atomic_rename)
# Test original state and database
self.assertIn(("test_rnmo", "pony"), original_state.models)
self.assertNotIn(("test_rnmo", "horse"), original_state.models)
self.assertEqual(
original_state.models['test_rnmo', 'rider'].fields['pony'].remote_field.model,
'Pony',
)
self.assertTableExists("test_rnmo_pony")
self.assertTableNotExists("test_rnmo_horse")
if connection.features.supports_foreign_keys:
self.assertFKExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_pony", "id"))
self.assertFKNotExists("test_rnmo_rider", ["pony_id"], ("test_rnmo_horse", "id"))
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RenameModel")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'old_name': "Pony", 'new_name': "Horse"})
def test_rename_model_state_forwards(self):
"""
RenameModel operations shouldn't trigger the caching of rendered apps
on state without prior apps.
"""
state = ProjectState()
state.add_model(ModelState('migrations', 'Foo', []))
operation = migrations.RenameModel('Foo', 'Bar')
operation.state_forwards('migrations', state)
self.assertNotIn('apps', state.__dict__)
self.assertNotIn(('migrations', 'foo'), state.models)
self.assertIn(('migrations', 'bar'), state.models)
# Now with apps cached.
apps = state.apps
operation = migrations.RenameModel('Bar', 'Foo')
operation.state_forwards('migrations', state)
self.assertIs(state.apps, apps)
self.assertNotIn(('migrations', 'bar'), state.models)
self.assertIn(('migrations', 'foo'), state.models)
def test_rename_model_with_self_referential_fk(self):
"""
Tests the RenameModel operation on model with self referential FK.
"""
project_state = self.set_up_test_model("test_rmwsrf", related_model=True)
# Test the state alteration
operation = migrations.RenameModel("Rider", "HorseRider")
self.assertEqual(operation.describe(), "Rename model Rider to HorseRider")
new_state = project_state.clone()
operation.state_forwards("test_rmwsrf", new_state)
self.assertNotIn(("test_rmwsrf", "rider"), new_state.models)
self.assertIn(("test_rmwsrf", "horserider"), new_state.models)
# Remember, RenameModel also repoints all incoming FKs and M2Ms
self.assertEqual(
'self',
new_state.models["test_rmwsrf", "horserider"].fields['friend'].remote_field.model
)
HorseRider = new_state.apps.get_model('test_rmwsrf', 'horserider')
self.assertIs(HorseRider._meta.get_field('horserider').remote_field.model, HorseRider)
# Test the database alteration
self.assertTableExists("test_rmwsrf_rider")
self.assertTableNotExists("test_rmwsrf_horserider")
if connection.features.supports_foreign_keys:
self.assertFKExists("test_rmwsrf_rider", ["friend_id"], ("test_rmwsrf_rider", "id"))
self.assertFKNotExists("test_rmwsrf_rider", ["friend_id"], ("test_rmwsrf_horserider", "id"))
atomic_rename = connection.features.supports_atomic_references_rename
with connection.schema_editor(atomic=atomic_rename) as editor:
operation.database_forwards("test_rmwsrf", editor, project_state, new_state)
self.assertTableNotExists("test_rmwsrf_rider")
self.assertTableExists("test_rmwsrf_horserider")
if connection.features.supports_foreign_keys:
self.assertFKNotExists("test_rmwsrf_horserider", ["friend_id"], ("test_rmwsrf_rider", "id"))
self.assertFKExists("test_rmwsrf_horserider", ["friend_id"], ("test_rmwsrf_horserider", "id"))
# And test reversal
with connection.schema_editor(atomic=atomic_rename) as editor:
operation.database_backwards("test_rmwsrf", editor, new_state, project_state)
self.assertTableExists("test_rmwsrf_rider")
self.assertTableNotExists("test_rmwsrf_horserider")
if connection.features.supports_foreign_keys:
self.assertFKExists("test_rmwsrf_rider", ["friend_id"], ("test_rmwsrf_rider", "id"))
self.assertFKNotExists("test_rmwsrf_rider", ["friend_id"], ("test_rmwsrf_horserider", "id"))
def test_rename_model_with_superclass_fk(self):
"""
Tests the RenameModel operation on a model which has a superclass that
has a foreign key.
"""
project_state = self.set_up_test_model("test_rmwsc", related_model=True, mti_model=True)
# Test the state alteration
operation = migrations.RenameModel("ShetlandPony", "LittleHorse")
self.assertEqual(operation.describe(), "Rename model ShetlandPony to LittleHorse")
new_state = project_state.clone()
operation.state_forwards("test_rmwsc", new_state)
self.assertNotIn(("test_rmwsc", "shetlandpony"), new_state.models)
self.assertIn(("test_rmwsc", "littlehorse"), new_state.models)
# RenameModel shouldn't repoint the superclass's relations, only local ones
self.assertEqual(
project_state.models['test_rmwsc', 'rider'].fields['pony'].remote_field.model,
new_state.models['test_rmwsc', 'rider'].fields['pony'].remote_field.model,
)
# Before running the migration we have a table for Shetland Pony, not Little Horse
self.assertTableExists("test_rmwsc_shetlandpony")
self.assertTableNotExists("test_rmwsc_littlehorse")
if connection.features.supports_foreign_keys:
# and the foreign key on rider points to pony, not shetland pony
self.assertFKExists("test_rmwsc_rider", ["pony_id"], ("test_rmwsc_pony", "id"))
self.assertFKNotExists("test_rmwsc_rider", ["pony_id"], ("test_rmwsc_shetlandpony", "id"))
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
operation.database_forwards("test_rmwsc", editor, project_state, new_state)
# Now we have a little horse table, not shetland pony
self.assertTableNotExists("test_rmwsc_shetlandpony")
self.assertTableExists("test_rmwsc_littlehorse")
if connection.features.supports_foreign_keys:
# but the Foreign keys still point at pony, not little horse
self.assertFKExists("test_rmwsc_rider", ["pony_id"], ("test_rmwsc_pony", "id"))
self.assertFKNotExists("test_rmwsc_rider", ["pony_id"], ("test_rmwsc_littlehorse", "id"))
def test_rename_model_with_self_referential_m2m(self):
app_label = "test_rename_model_with_self_referential_m2m"
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel("ReflexivePony", fields=[
("id", models.AutoField(primary_key=True)),
("ponies", models.ManyToManyField("self")),
]),
])
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.RenameModel("ReflexivePony", "ReflexivePony2"),
], atomic=connection.features.supports_atomic_references_rename)
Pony = project_state.apps.get_model(app_label, "ReflexivePony2")
pony = Pony.objects.create()
pony.ponies.add(pony)
def test_rename_model_with_m2m(self):
app_label = "test_rename_model_with_m2m"
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel("Rider", fields=[
("id", models.AutoField(primary_key=True)),
]),
migrations.CreateModel("Pony", fields=[
("id", models.AutoField(primary_key=True)),
("riders", models.ManyToManyField("Rider")),
]),
])
Pony = project_state.apps.get_model(app_label, "Pony")
Rider = project_state.apps.get_model(app_label, "Rider")
pony = Pony.objects.create()
rider = Rider.objects.create()
pony.riders.add(rider)
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.RenameModel("Pony", "Pony2"),
], atomic=connection.features.supports_atomic_references_rename)
Pony = project_state.apps.get_model(app_label, "Pony2")
Rider = project_state.apps.get_model(app_label, "Rider")
pony = Pony.objects.create()
rider = Rider.objects.create()
pony.riders.add(rider)
self.assertEqual(Pony.objects.count(), 2)
self.assertEqual(Rider.objects.count(), 2)
self.assertEqual(Pony._meta.get_field('riders').remote_field.through.objects.count(), 2)
def test_rename_model_with_db_table_noop(self):
app_label = 'test_rmwdbtn'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.AutoField(primary_key=True)),
], options={'db_table': 'rider'}),
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('rider', models.ForeignKey('%s.Rider' % app_label, models.CASCADE)),
]),
])
new_state = project_state.clone()
operation = migrations.RenameModel('Rider', 'Runner')
operation.state_forwards(app_label, new_state)
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards(app_label, editor, project_state, new_state)
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_backwards(app_label, editor, new_state, project_state)
def test_rename_m2m_target_model(self):
app_label = "test_rename_m2m_target_model"
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel("Rider", fields=[
("id", models.AutoField(primary_key=True)),
]),
migrations.CreateModel("Pony", fields=[
("id", models.AutoField(primary_key=True)),
("riders", models.ManyToManyField("Rider")),
]),
])
Pony = project_state.apps.get_model(app_label, "Pony")
Rider = project_state.apps.get_model(app_label, "Rider")
pony = Pony.objects.create()
rider = Rider.objects.create()
pony.riders.add(rider)
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.RenameModel("Rider", "Rider2"),
], atomic=connection.features.supports_atomic_references_rename)
Pony = project_state.apps.get_model(app_label, "Pony")
Rider = project_state.apps.get_model(app_label, "Rider2")
pony = Pony.objects.create()
rider = Rider.objects.create()
pony.riders.add(rider)
self.assertEqual(Pony.objects.count(), 2)
self.assertEqual(Rider.objects.count(), 2)
self.assertEqual(Pony._meta.get_field('riders').remote_field.through.objects.count(), 2)
def test_rename_m2m_through_model(self):
app_label = "test_rename_through"
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel("Rider", fields=[
("id", models.AutoField(primary_key=True)),
]),
migrations.CreateModel("Pony", fields=[
("id", models.AutoField(primary_key=True)),
]),
migrations.CreateModel("PonyRider", fields=[
("id", models.AutoField(primary_key=True)),
("rider", models.ForeignKey("test_rename_through.Rider", models.CASCADE)),
("pony", models.ForeignKey("test_rename_through.Pony", models.CASCADE)),
]),
migrations.AddField(
"Pony",
"riders",
models.ManyToManyField("test_rename_through.Rider", through="test_rename_through.PonyRider"),
),
])
Pony = project_state.apps.get_model(app_label, "Pony")
Rider = project_state.apps.get_model(app_label, "Rider")
PonyRider = project_state.apps.get_model(app_label, "PonyRider")
pony = Pony.objects.create()
rider = Rider.objects.create()
PonyRider.objects.create(pony=pony, rider=rider)
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.RenameModel("PonyRider", "PonyRider2"),
])
Pony = project_state.apps.get_model(app_label, "Pony")
Rider = project_state.apps.get_model(app_label, "Rider")
PonyRider = project_state.apps.get_model(app_label, "PonyRider2")
pony = Pony.objects.first()
rider = Rider.objects.create()
PonyRider.objects.create(pony=pony, rider=rider)
self.assertEqual(Pony.objects.count(), 1)
self.assertEqual(Rider.objects.count(), 2)
self.assertEqual(PonyRider.objects.count(), 2)
self.assertEqual(pony.riders.count(), 2)
def test_rename_m2m_model_after_rename_field(self):
"""RenameModel renames a many-to-many column after a RenameField."""
app_label = 'test_rename_multiple'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=20)),
]),
migrations.CreateModel('Rider', fields=[
('id', models.AutoField(primary_key=True)),
('pony', models.ForeignKey('test_rename_multiple.Pony', models.CASCADE)),
]),
migrations.CreateModel('PonyRider', fields=[
('id', models.AutoField(primary_key=True)),
('riders', models.ManyToManyField('Rider')),
]),
migrations.RenameField(model_name='pony', old_name='name', new_name='fancy_name'),
migrations.RenameModel(old_name='Rider', new_name='Jockey'),
], atomic=connection.features.supports_atomic_references_rename)
Pony = project_state.apps.get_model(app_label, 'Pony')
Jockey = project_state.apps.get_model(app_label, 'Jockey')
PonyRider = project_state.apps.get_model(app_label, 'PonyRider')
# No "no such column" error means the column was renamed correctly.
pony = Pony.objects.create(fancy_name='a good name')
jockey = Jockey.objects.create(pony=pony)
ponyrider = PonyRider.objects.create()
ponyrider.riders.add(jockey)
def test_add_field(self):
"""
Tests the AddField operation.
"""
# Test the state alteration
operation = migrations.AddField(
"Pony",
"height",
models.FloatField(null=True, default=5),
)
self.assertEqual(operation.describe(), "Add field height to Pony")
self.assertEqual(operation.migration_name_fragment, 'pony_height')
project_state, new_state = self.make_test_state("test_adfl", operation)
self.assertEqual(len(new_state.models["test_adfl", "pony"].fields), 4)
field = new_state.models['test_adfl', 'pony'].fields['height']
self.assertEqual(field.default, 5)
# Test the database alteration
self.assertColumnNotExists("test_adfl_pony", "height")
with connection.schema_editor() as editor:
operation.database_forwards("test_adfl", editor, project_state, new_state)
self.assertColumnExists("test_adfl_pony", "height")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_adfl", editor, new_state, project_state)
self.assertColumnNotExists("test_adfl_pony", "height")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AddField")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["field", "model_name", "name"])
def test_add_charfield(self):
"""
Tests the AddField operation on TextField.
"""
project_state = self.set_up_test_model("test_adchfl")
Pony = project_state.apps.get_model("test_adchfl", "Pony")
pony = Pony.objects.create(weight=42)
new_state = self.apply_operations("test_adchfl", project_state, [
migrations.AddField(
"Pony",
"text",
models.CharField(max_length=10, default="some text"),
),
migrations.AddField(
"Pony",
"empty",
models.CharField(max_length=10, default=""),
),
# If not properly quoted digits would be interpreted as an int.
migrations.AddField(
"Pony",
"digits",
models.CharField(max_length=10, default="42"),
),
# Manual quoting is fragile and could trip on quotes. Refs #xyz.
migrations.AddField(
"Pony",
"quotes",
models.CharField(max_length=10, default='"\'"'),
),
])
Pony = new_state.apps.get_model("test_adchfl", "Pony")
pony = Pony.objects.get(pk=pony.pk)
self.assertEqual(pony.text, "some text")
self.assertEqual(pony.empty, "")
self.assertEqual(pony.digits, "42")
self.assertEqual(pony.quotes, '"\'"')
def test_add_textfield(self):
"""
Tests the AddField operation on TextField.
"""
project_state = self.set_up_test_model("test_adtxtfl")
Pony = project_state.apps.get_model("test_adtxtfl", "Pony")
pony = Pony.objects.create(weight=42)
new_state = self.apply_operations("test_adtxtfl", project_state, [
migrations.AddField(
"Pony",
"text",
models.TextField(default="some text"),
),
migrations.AddField(
"Pony",
"empty",
models.TextField(default=""),
),
# If not properly quoted digits would be interpreted as an int.
migrations.AddField(
"Pony",
"digits",
models.TextField(default="42"),
),
# Manual quoting is fragile and could trip on quotes. Refs #xyz.
migrations.AddField(
"Pony",
"quotes",
models.TextField(default='"\'"'),
),
])
Pony = new_state.apps.get_model("test_adtxtfl", "Pony")
pony = Pony.objects.get(pk=pony.pk)
self.assertEqual(pony.text, "some text")
self.assertEqual(pony.empty, "")
self.assertEqual(pony.digits, "42")
self.assertEqual(pony.quotes, '"\'"')
def test_add_binaryfield(self):
"""
Tests the AddField operation on TextField/BinaryField.
"""
project_state = self.set_up_test_model("test_adbinfl")
Pony = project_state.apps.get_model("test_adbinfl", "Pony")
pony = Pony.objects.create(weight=42)
new_state = self.apply_operations("test_adbinfl", project_state, [
migrations.AddField(
"Pony",
"blob",
models.BinaryField(default=b"some text"),
),
migrations.AddField(
"Pony",
"empty",
models.BinaryField(default=b""),
),
# If not properly quoted digits would be interpreted as an int.
migrations.AddField(
"Pony",
"digits",
models.BinaryField(default=b"42"),
),
# Manual quoting is fragile and could trip on quotes. Refs #xyz.
migrations.AddField(
"Pony",
"quotes",
models.BinaryField(default=b'"\'"'),
),
])
Pony = new_state.apps.get_model("test_adbinfl", "Pony")
pony = Pony.objects.get(pk=pony.pk)
# SQLite returns buffer/memoryview, cast to bytes for checking.
self.assertEqual(bytes(pony.blob), b"some text")
self.assertEqual(bytes(pony.empty), b"")
self.assertEqual(bytes(pony.digits), b"42")
self.assertEqual(bytes(pony.quotes), b'"\'"')
def test_column_name_quoting(self):
"""
Column names that are SQL keywords shouldn't cause problems when used
in migrations (#22168).
"""
project_state = self.set_up_test_model("test_regr22168")
operation = migrations.AddField(
"Pony",
"order",
models.IntegerField(default=0),
)
new_state = project_state.clone()
operation.state_forwards("test_regr22168", new_state)
with connection.schema_editor() as editor:
operation.database_forwards("test_regr22168", editor, project_state, new_state)
self.assertColumnExists("test_regr22168_pony", "order")
def test_add_field_preserve_default(self):
"""
Tests the AddField operation's state alteration
when preserve_default = False.
"""
project_state = self.set_up_test_model("test_adflpd")
# Test the state alteration
operation = migrations.AddField(
"Pony",
"height",
models.FloatField(null=True, default=4),
preserve_default=False,
)
new_state = project_state.clone()
operation.state_forwards("test_adflpd", new_state)
self.assertEqual(len(new_state.models["test_adflpd", "pony"].fields), 4)
field = new_state.models['test_adflpd', 'pony'].fields['height']
self.assertEqual(field.default, models.NOT_PROVIDED)
# Test the database alteration
project_state.apps.get_model("test_adflpd", "pony").objects.create(
weight=4,
)
self.assertColumnNotExists("test_adflpd_pony", "height")
with connection.schema_editor() as editor:
operation.database_forwards("test_adflpd", editor, project_state, new_state)
self.assertColumnExists("test_adflpd_pony", "height")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AddField")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["field", "model_name", "name", "preserve_default"])
def test_add_field_m2m(self):
"""
Tests the AddField operation with a ManyToManyField.
"""
project_state = self.set_up_test_model("test_adflmm", second_model=True)
# Test the state alteration
operation = migrations.AddField("Pony", "stables", models.ManyToManyField("Stable", related_name="ponies"))
new_state = project_state.clone()
operation.state_forwards("test_adflmm", new_state)
self.assertEqual(len(new_state.models["test_adflmm", "pony"].fields), 4)
# Test the database alteration
self.assertTableNotExists("test_adflmm_pony_stables")
with connection.schema_editor() as editor:
operation.database_forwards("test_adflmm", editor, project_state, new_state)
self.assertTableExists("test_adflmm_pony_stables")
self.assertColumnNotExists("test_adflmm_pony", "stables")
# Make sure the M2M field actually works
with atomic():
Pony = new_state.apps.get_model("test_adflmm", "Pony")
p = Pony.objects.create(pink=False, weight=4.55)
p.stables.create()
self.assertEqual(p.stables.count(), 1)
p.stables.all().delete()
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_adflmm", editor, new_state, project_state)
self.assertTableNotExists("test_adflmm_pony_stables")
def test_alter_field_m2m(self):
project_state = self.set_up_test_model("test_alflmm", second_model=True)
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AddField("Pony", "stables", models.ManyToManyField("Stable", related_name="ponies"))
])
Pony = project_state.apps.get_model("test_alflmm", "Pony")
self.assertFalse(Pony._meta.get_field('stables').blank)
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AlterField(
"Pony", "stables", models.ManyToManyField(to="Stable", related_name="ponies", blank=True)
)
])
Pony = project_state.apps.get_model("test_alflmm", "Pony")
self.assertTrue(Pony._meta.get_field('stables').blank)
def test_repoint_field_m2m(self):
project_state = self.set_up_test_model("test_alflmm", second_model=True, third_model=True)
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AddField("Pony", "places", models.ManyToManyField("Stable", related_name="ponies"))
])
Pony = project_state.apps.get_model("test_alflmm", "Pony")
project_state = self.apply_operations("test_alflmm", project_state, operations=[
migrations.AlterField("Pony", "places", models.ManyToManyField(to="Van", related_name="ponies"))
])
# Ensure the new field actually works
Pony = project_state.apps.get_model("test_alflmm", "Pony")
p = Pony.objects.create(pink=False, weight=4.55)
p.places.create()
self.assertEqual(p.places.count(), 1)
p.places.all().delete()
def test_remove_field_m2m(self):
project_state = self.set_up_test_model("test_rmflmm", second_model=True)
project_state = self.apply_operations("test_rmflmm", project_state, operations=[
migrations.AddField("Pony", "stables", models.ManyToManyField("Stable", related_name="ponies"))
])
self.assertTableExists("test_rmflmm_pony_stables")
with_field_state = project_state.clone()
operations = [migrations.RemoveField("Pony", "stables")]
project_state = self.apply_operations("test_rmflmm", project_state, operations=operations)
self.assertTableNotExists("test_rmflmm_pony_stables")
# And test reversal
self.unapply_operations("test_rmflmm", with_field_state, operations=operations)
self.assertTableExists("test_rmflmm_pony_stables")
def test_remove_field_m2m_with_through(self):
project_state = self.set_up_test_model("test_rmflmmwt", second_model=True)
self.assertTableNotExists("test_rmflmmwt_ponystables")
project_state = self.apply_operations("test_rmflmmwt", project_state, operations=[
migrations.CreateModel("PonyStables", fields=[
("pony", models.ForeignKey('test_rmflmmwt.Pony', models.CASCADE)),
("stable", models.ForeignKey('test_rmflmmwt.Stable', models.CASCADE)),
]),
migrations.AddField(
"Pony", "stables",
models.ManyToManyField("Stable", related_name="ponies", through='test_rmflmmwt.PonyStables')
)
])
self.assertTableExists("test_rmflmmwt_ponystables")
operations = [migrations.RemoveField("Pony", "stables"), migrations.DeleteModel("PonyStables")]
self.apply_operations("test_rmflmmwt", project_state, operations=operations)
def test_remove_field(self):
"""
Tests the RemoveField operation.
"""
project_state = self.set_up_test_model("test_rmfl")
# Test the state alteration
operation = migrations.RemoveField("Pony", "pink")
self.assertEqual(operation.describe(), "Remove field pink from Pony")
self.assertEqual(operation.migration_name_fragment, 'remove_pony_pink')
new_state = project_state.clone()
operation.state_forwards("test_rmfl", new_state)
self.assertEqual(len(new_state.models["test_rmfl", "pony"].fields), 2)
# Test the database alteration
self.assertColumnExists("test_rmfl_pony", "pink")
with connection.schema_editor() as editor:
operation.database_forwards("test_rmfl", editor, project_state, new_state)
self.assertColumnNotExists("test_rmfl_pony", "pink")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_rmfl", editor, new_state, project_state)
self.assertColumnExists("test_rmfl_pony", "pink")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RemoveField")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'name': 'pink'})
def test_remove_fk(self):
"""
Tests the RemoveField operation on a foreign key.
"""
project_state = self.set_up_test_model("test_rfk", related_model=True)
self.assertColumnExists("test_rfk_rider", "pony_id")
operation = migrations.RemoveField("Rider", "pony")
new_state = project_state.clone()
operation.state_forwards("test_rfk", new_state)
with connection.schema_editor() as editor:
operation.database_forwards("test_rfk", editor, project_state, new_state)
self.assertColumnNotExists("test_rfk_rider", "pony_id")
with connection.schema_editor() as editor:
operation.database_backwards("test_rfk", editor, new_state, project_state)
self.assertColumnExists("test_rfk_rider", "pony_id")
def test_alter_model_table(self):
"""
Tests the AlterModelTable operation.
"""
project_state = self.set_up_test_model("test_almota")
# Test the state alteration
operation = migrations.AlterModelTable("Pony", "test_almota_pony_2")
self.assertEqual(operation.describe(), "Rename table for Pony to test_almota_pony_2")
self.assertEqual(operation.migration_name_fragment, 'alter_pony_table')
new_state = project_state.clone()
operation.state_forwards("test_almota", new_state)
self.assertEqual(new_state.models["test_almota", "pony"].options["db_table"], "test_almota_pony_2")
# Test the database alteration
self.assertTableExists("test_almota_pony")
self.assertTableNotExists("test_almota_pony_2")
with connection.schema_editor() as editor:
operation.database_forwards("test_almota", editor, project_state, new_state)
self.assertTableNotExists("test_almota_pony")
self.assertTableExists("test_almota_pony_2")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_almota", editor, new_state, project_state)
self.assertTableExists("test_almota_pony")
self.assertTableNotExists("test_almota_pony_2")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterModelTable")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'table': "test_almota_pony_2"})
def test_alter_model_table_none(self):
"""
Tests the AlterModelTable operation if the table name is set to None.
"""
operation = migrations.AlterModelTable("Pony", None)
self.assertEqual(operation.describe(), "Rename table for Pony to (default)")
def test_alter_model_table_noop(self):
"""
Tests the AlterModelTable operation if the table name is not changed.
"""
project_state = self.set_up_test_model("test_almota")
# Test the state alteration
operation = migrations.AlterModelTable("Pony", "test_almota_pony")
new_state = project_state.clone()
operation.state_forwards("test_almota", new_state)
self.assertEqual(new_state.models["test_almota", "pony"].options["db_table"], "test_almota_pony")
# Test the database alteration
self.assertTableExists("test_almota_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_almota", editor, project_state, new_state)
self.assertTableExists("test_almota_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_almota", editor, new_state, project_state)
self.assertTableExists("test_almota_pony")
def test_alter_model_table_m2m(self):
"""
AlterModelTable should rename auto-generated M2M tables.
"""
app_label = "test_talflmltlm2m"
pony_db_table = 'pony_foo'
project_state = self.set_up_test_model(app_label, second_model=True, db_table=pony_db_table)
# Add the M2M field
first_state = project_state.clone()
operation = migrations.AddField("Pony", "stables", models.ManyToManyField("Stable"))
operation.state_forwards(app_label, first_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, first_state)
original_m2m_table = "%s_%s" % (pony_db_table, "stables")
new_m2m_table = "%s_%s" % (app_label, "pony_stables")
self.assertTableExists(original_m2m_table)
self.assertTableNotExists(new_m2m_table)
# Rename the Pony db_table which should also rename the m2m table.
second_state = first_state.clone()
operation = migrations.AlterModelTable(name='pony', table=None)
operation.state_forwards(app_label, second_state)
atomic_rename = connection.features.supports_atomic_references_rename
with connection.schema_editor(atomic=atomic_rename) as editor:
operation.database_forwards(app_label, editor, first_state, second_state)
self.assertTableExists(new_m2m_table)
self.assertTableNotExists(original_m2m_table)
# And test reversal
with connection.schema_editor(atomic=atomic_rename) as editor:
operation.database_backwards(app_label, editor, second_state, first_state)
self.assertTableExists(original_m2m_table)
self.assertTableNotExists(new_m2m_table)
def test_alter_field(self):
"""
Tests the AlterField operation.
"""
project_state = self.set_up_test_model("test_alfl")
# Test the state alteration
operation = migrations.AlterField("Pony", "pink", models.IntegerField(null=True))
self.assertEqual(operation.describe(), "Alter field pink on Pony")
self.assertEqual(operation.migration_name_fragment, 'alter_pony_pink')
new_state = project_state.clone()
operation.state_forwards("test_alfl", new_state)
self.assertIs(project_state.models['test_alfl', 'pony'].fields['pink'].null, False)
self.assertIs(new_state.models['test_alfl', 'pony'].fields['pink'].null, True)
# Test the database alteration
self.assertColumnNotNull("test_alfl_pony", "pink")
with connection.schema_editor() as editor:
operation.database_forwards("test_alfl", editor, project_state, new_state)
self.assertColumnNull("test_alfl_pony", "pink")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alfl", editor, new_state, project_state)
self.assertColumnNotNull("test_alfl_pony", "pink")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterField")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["field", "model_name", "name"])
def test_alter_field_add_db_column_noop(self):
"""
AlterField operation is a noop when adding only a db_column and the
column name is not changed.
"""
app_label = 'test_afadbn'
project_state = self.set_up_test_model(app_label, related_model=True)
pony_table = '%s_pony' % app_label
new_state = project_state.clone()
operation = migrations.AlterField('Pony', 'weight', models.FloatField(db_column='weight'))
operation.state_forwards(app_label, new_state)
self.assertIsNone(
project_state.models[app_label, 'pony'].fields['weight'].db_column,
)
self.assertEqual(
new_state.models[app_label, 'pony'].fields['weight'].db_column,
'weight',
)
self.assertColumnExists(pony_table, 'weight')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertColumnExists(pony_table, 'weight')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_backwards(app_label, editor, new_state, project_state)
self.assertColumnExists(pony_table, 'weight')
rider_table = '%s_rider' % app_label
new_state = project_state.clone()
operation = migrations.AlterField(
'Rider',
'pony',
models.ForeignKey('Pony', models.CASCADE, db_column='pony_id'),
)
operation.state_forwards(app_label, new_state)
self.assertIsNone(
project_state.models[app_label, 'rider'].fields['pony'].db_column,
)
self.assertIs(
new_state.models[app_label, 'rider'].fields['pony'].db_column,
'pony_id',
)
self.assertColumnExists(rider_table, 'pony_id')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertColumnExists(rider_table, 'pony_id')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards(app_label, editor, new_state, project_state)
self.assertColumnExists(rider_table, 'pony_id')
def test_alter_field_pk(self):
"""
Tests the AlterField operation on primary keys (for things like PostgreSQL's SERIAL weirdness)
"""
project_state = self.set_up_test_model("test_alflpk")
# Test the state alteration
operation = migrations.AlterField("Pony", "id", models.IntegerField(primary_key=True))
new_state = project_state.clone()
operation.state_forwards("test_alflpk", new_state)
self.assertIsInstance(
project_state.models['test_alflpk', 'pony'].fields['id'],
models.AutoField,
)
self.assertIsInstance(
new_state.models['test_alflpk', 'pony'].fields['id'],
models.IntegerField,
)
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alflpk", editor, project_state, new_state)
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alflpk", editor, new_state, project_state)
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_field_pk_fk(self):
"""
Tests the AlterField operation on primary keys changes any FKs pointing to it.
"""
project_state = self.set_up_test_model("test_alflpkfk", related_model=True)
project_state = self.apply_operations('test_alflpkfk', project_state, [
migrations.CreateModel('Stable', fields=[
('ponies', models.ManyToManyField('Pony')),
]),
migrations.AddField(
'Pony',
'stables',
models.ManyToManyField('Stable'),
),
])
# Test the state alteration
operation = migrations.AlterField("Pony", "id", models.FloatField(primary_key=True))
new_state = project_state.clone()
operation.state_forwards("test_alflpkfk", new_state)
self.assertIsInstance(
project_state.models['test_alflpkfk', 'pony'].fields['id'],
models.AutoField,
)
self.assertIsInstance(
new_state.models['test_alflpkfk', 'pony'].fields['id'],
models.FloatField,
)
def assertIdTypeEqualsFkType():
with connection.cursor() as cursor:
id_type, id_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_pony")
if c.name == "id"
][0]
fk_type, fk_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_rider")
if c.name == "pony_id"
][0]
m2m_fk_type, m2m_fk_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(
cursor,
'test_alflpkfk_pony_stables',
) if c.name == 'pony_id'
][0]
remote_m2m_fk_type, remote_m2m_fk_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(
cursor,
'test_alflpkfk_stable_ponies',
) if c.name == 'pony_id'
][0]
self.assertEqual(id_type, fk_type)
self.assertEqual(id_type, m2m_fk_type)
self.assertEqual(id_type, remote_m2m_fk_type)
self.assertEqual(id_null, fk_null)
self.assertEqual(id_null, m2m_fk_null)
self.assertEqual(id_null, remote_m2m_fk_null)
assertIdTypeEqualsFkType()
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alflpkfk", editor, project_state, new_state)
assertIdTypeEqualsFkType()
if connection.features.supports_foreign_keys:
self.assertFKExists(
'test_alflpkfk_pony_stables',
['pony_id'],
('test_alflpkfk_pony', 'id'),
)
self.assertFKExists(
'test_alflpkfk_stable_ponies',
['pony_id'],
('test_alflpkfk_pony', 'id'),
)
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alflpkfk", editor, new_state, project_state)
assertIdTypeEqualsFkType()
if connection.features.supports_foreign_keys:
self.assertFKExists(
'test_alflpkfk_pony_stables',
['pony_id'],
('test_alflpkfk_pony', 'id'),
)
self.assertFKExists(
'test_alflpkfk_stable_ponies',
['pony_id'],
('test_alflpkfk_pony', 'id'),
)
def test_alter_field_pk_mti_fk(self):
app_label = 'test_alflpkmtifk'
project_state = self.set_up_test_model(app_label, mti_model=True)
project_state = self.apply_operations(app_label, project_state, [
migrations.CreateModel('ShetlandRider', fields=[
(
'pony',
models.ForeignKey(f'{app_label}.ShetlandPony', models.CASCADE),
),
]),
])
operation = migrations.AlterField(
'Pony',
'id',
models.BigAutoField(primary_key=True),
)
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertIsInstance(
new_state.models[app_label, 'pony'].fields['id'],
models.BigAutoField,
)
def _get_column_id_type(cursor, table, column):
return [
c.type_code
for c in connection.introspection.get_table_description(
cursor,
f'{app_label}_{table}',
)
if c.name == column
][0]
def assertIdTypeEqualsMTIFkType():
with connection.cursor() as cursor:
parent_id_type = _get_column_id_type(cursor, 'pony', 'id')
child_id_type = _get_column_id_type(cursor, 'shetlandpony', 'pony_ptr_id')
mti_id_type = _get_column_id_type(cursor, 'shetlandrider', 'pony_id')
self.assertEqual(parent_id_type, child_id_type)
self.assertEqual(parent_id_type, mti_id_type)
assertIdTypeEqualsMTIFkType()
# Alter primary key.
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
assertIdTypeEqualsMTIFkType()
if connection.features.supports_foreign_keys:
self.assertFKExists(
f'{app_label}_shetlandpony',
['pony_ptr_id'],
(f'{app_label}_pony', 'id'),
)
self.assertFKExists(
f'{app_label}_shetlandrider',
['pony_id'],
(f'{app_label}_shetlandpony', 'pony_ptr_id'),
)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
assertIdTypeEqualsMTIFkType()
if connection.features.supports_foreign_keys:
self.assertFKExists(
f'{app_label}_shetlandpony',
['pony_ptr_id'],
(f'{app_label}_pony', 'id'),
)
self.assertFKExists(
f'{app_label}_shetlandrider',
['pony_id'],
(f'{app_label}_shetlandpony', 'pony_ptr_id'),
)
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_field_reloads_state_on_fk_with_to_field_target_type_change(self):
app_label = 'test_alflrsfkwtflttc'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.AutoField(primary_key=True)),
('code', models.IntegerField(unique=True)),
]),
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('rider', models.ForeignKey('%s.Rider' % app_label, models.CASCADE, to_field='code')),
]),
])
operation = migrations.AlterField(
'Rider',
'code',
models.CharField(max_length=100, unique=True),
)
self.apply_operations(app_label, project_state, operations=[operation])
id_type, id_null = [
(c.type_code, c.null_ok)
for c in self.get_table_description('%s_rider' % app_label)
if c.name == 'code'
][0]
fk_type, fk_null = [
(c.type_code, c.null_ok)
for c in self.get_table_description('%s_pony' % app_label)
if c.name == 'rider_id'
][0]
self.assertEqual(id_type, fk_type)
self.assertEqual(id_null, fk_null)
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_field_reloads_state_on_fk_with_to_field_related_name_target_type_change(self):
app_label = 'test_alflrsfkwtflrnttc'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.AutoField(primary_key=True)),
('code', models.PositiveIntegerField(unique=True)),
]),
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('rider', models.ForeignKey(
'%s.Rider' % app_label,
models.CASCADE,
to_field='code',
related_name='+',
)),
]),
])
operation = migrations.AlterField(
'Rider',
'code',
models.CharField(max_length=100, unique=True),
)
self.apply_operations(app_label, project_state, operations=[operation])
def test_alter_field_reloads_state_on_fk_target_changes(self):
"""
If AlterField doesn't reload state appropriately, the second AlterField
crashes on MySQL due to not dropping the PonyRider.pony foreign key
constraint before modifying the column.
"""
app_label = 'alter_alter_field_reloads_state_on_fk_target_changes'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
]),
migrations.CreateModel('Pony', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
('rider', models.ForeignKey('%s.Rider' % app_label, models.CASCADE)),
]),
migrations.CreateModel('PonyRider', fields=[
('id', models.AutoField(primary_key=True)),
('pony', models.ForeignKey('%s.Pony' % app_label, models.CASCADE)),
]),
])
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.AlterField('Rider', 'id', models.CharField(primary_key=True, max_length=99)),
migrations.AlterField('Pony', 'id', models.CharField(primary_key=True, max_length=99)),
])
def test_alter_field_reloads_state_on_fk_with_to_field_target_changes(self):
"""
If AlterField doesn't reload state appropriately, the second AlterField
crashes on MySQL due to not dropping the PonyRider.pony foreign key
constraint before modifying the column.
"""
app_label = 'alter_alter_field_reloads_state_on_fk_with_to_field_target_changes'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
('slug', models.CharField(unique=True, max_length=100)),
]),
migrations.CreateModel('Pony', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
('rider', models.ForeignKey('%s.Rider' % app_label, models.CASCADE, to_field='slug')),
('slug', models.CharField(unique=True, max_length=100)),
]),
migrations.CreateModel('PonyRider', fields=[
('id', models.AutoField(primary_key=True)),
('pony', models.ForeignKey('%s.Pony' % app_label, models.CASCADE, to_field='slug')),
]),
])
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.AlterField('Rider', 'slug', models.CharField(unique=True, max_length=99)),
migrations.AlterField('Pony', 'slug', models.CharField(unique=True, max_length=99)),
])
def test_rename_field_reloads_state_on_fk_target_changes(self):
"""
If RenameField doesn't reload state appropriately, the AlterField
crashes on MySQL due to not dropping the PonyRider.pony foreign key
constraint before modifying the column.
"""
app_label = 'alter_rename_field_reloads_state_on_fk_target_changes'
project_state = self.apply_operations(app_label, ProjectState(), operations=[
migrations.CreateModel('Rider', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
]),
migrations.CreateModel('Pony', fields=[
('id', models.CharField(primary_key=True, max_length=100)),
('rider', models.ForeignKey('%s.Rider' % app_label, models.CASCADE)),
]),
migrations.CreateModel('PonyRider', fields=[
('id', models.AutoField(primary_key=True)),
('pony', models.ForeignKey('%s.Pony' % app_label, models.CASCADE)),
]),
])
project_state = self.apply_operations(app_label, project_state, operations=[
migrations.RenameField('Rider', 'id', 'id2'),
migrations.AlterField('Pony', 'id', models.CharField(primary_key=True, max_length=99)),
], atomic=connection.features.supports_atomic_references_rename)
def test_rename_field(self):
"""
Tests the RenameField operation.
"""
project_state = self.set_up_test_model("test_rnfl", unique_together=True, index_together=True)
# Test the state alteration
operation = migrations.RenameField("Pony", "pink", "blue")
self.assertEqual(operation.describe(), "Rename field pink on Pony to blue")
self.assertEqual(operation.migration_name_fragment, 'rename_pink_pony_blue')
new_state = project_state.clone()
operation.state_forwards("test_rnfl", new_state)
self.assertIn("blue", new_state.models["test_rnfl", "pony"].fields)
self.assertNotIn("pink", new_state.models["test_rnfl", "pony"].fields)
# Make sure the unique_together has the renamed column too
self.assertIn("blue", new_state.models["test_rnfl", "pony"].options['unique_together'][0])
self.assertNotIn("pink", new_state.models["test_rnfl", "pony"].options['unique_together'][0])
# Make sure the index_together has the renamed column too
self.assertIn("blue", new_state.models["test_rnfl", "pony"].options['index_together'][0])
self.assertNotIn("pink", new_state.models["test_rnfl", "pony"].options['index_together'][0])
# Test the database alteration
self.assertColumnExists("test_rnfl_pony", "pink")
self.assertColumnNotExists("test_rnfl_pony", "blue")
with connection.schema_editor() as editor:
operation.database_forwards("test_rnfl", editor, project_state, new_state)
self.assertColumnExists("test_rnfl_pony", "blue")
self.assertColumnNotExists("test_rnfl_pony", "pink")
# Ensure the unique constraint has been ported over
with connection.cursor() as cursor:
cursor.execute("INSERT INTO test_rnfl_pony (blue, weight) VALUES (1, 1)")
with self.assertRaises(IntegrityError):
with atomic():
cursor.execute("INSERT INTO test_rnfl_pony (blue, weight) VALUES (1, 1)")
cursor.execute("DELETE FROM test_rnfl_pony")
# Ensure the index constraint has been ported over
self.assertIndexExists("test_rnfl_pony", ["weight", "blue"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_rnfl", editor, new_state, project_state)
self.assertColumnExists("test_rnfl_pony", "pink")
self.assertColumnNotExists("test_rnfl_pony", "blue")
# Ensure the index constraint has been reset
self.assertIndexExists("test_rnfl_pony", ["weight", "pink"])
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RenameField")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'old_name': "pink", 'new_name': "blue"})
def test_rename_field_with_db_column(self):
project_state = self.apply_operations('test_rfwdbc', ProjectState(), operations=[
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField(db_column='db_field')),
('fk_field', models.ForeignKey(
'Pony',
models.CASCADE,
db_column='db_fk_field',
)),
]),
])
new_state = project_state.clone()
operation = migrations.RenameField('Pony', 'field', 'renamed_field')
operation.state_forwards('test_rfwdbc', new_state)
self.assertIn('renamed_field', new_state.models['test_rfwdbc', 'pony'].fields)
self.assertNotIn('field', new_state.models['test_rfwdbc', 'pony'].fields)
self.assertColumnExists('test_rfwdbc_pony', 'db_field')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards('test_rfwdbc', editor, project_state, new_state)
self.assertColumnExists('test_rfwdbc_pony', 'db_field')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_backwards('test_rfwdbc', editor, new_state, project_state)
self.assertColumnExists('test_rfwdbc_pony', 'db_field')
new_state = project_state.clone()
operation = migrations.RenameField('Pony', 'fk_field', 'renamed_fk_field')
operation.state_forwards('test_rfwdbc', new_state)
self.assertIn('renamed_fk_field', new_state.models['test_rfwdbc', 'pony'].fields)
self.assertNotIn('fk_field', new_state.models['test_rfwdbc', 'pony'].fields)
self.assertColumnExists('test_rfwdbc_pony', 'db_fk_field')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_forwards('test_rfwdbc', editor, project_state, new_state)
self.assertColumnExists('test_rfwdbc_pony', 'db_fk_field')
with connection.schema_editor() as editor:
with self.assertNumQueries(0):
operation.database_backwards('test_rfwdbc', editor, new_state, project_state)
self.assertColumnExists('test_rfwdbc_pony', 'db_fk_field')
def test_rename_field_case(self):
project_state = self.apply_operations('test_rfmx', ProjectState(), operations=[
migrations.CreateModel('Pony', fields=[
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField()),
]),
])
new_state = project_state.clone()
operation = migrations.RenameField('Pony', 'field', 'FiElD')
operation.state_forwards('test_rfmx', new_state)
self.assertIn('FiElD', new_state.models['test_rfmx', 'pony'].fields)
self.assertColumnExists('test_rfmx_pony', 'field')
with connection.schema_editor() as editor:
operation.database_forwards('test_rfmx', editor, project_state, new_state)
self.assertColumnExists(
'test_rfmx_pony',
connection.introspection.identifier_converter('FiElD'),
)
with connection.schema_editor() as editor:
operation.database_backwards('test_rfmx', editor, new_state, project_state)
self.assertColumnExists('test_rfmx_pony', 'field')
def test_rename_missing_field(self):
state = ProjectState()
state.add_model(ModelState('app', 'model', []))
with self.assertRaisesMessage(FieldDoesNotExist, "app.model has no field named 'field'"):
migrations.RenameField('model', 'field', 'new_field').state_forwards('app', state)
def test_rename_referenced_field_state_forward(self):
state = ProjectState()
state.add_model(ModelState('app', 'Model', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField(unique=True)),
]))
state.add_model(ModelState('app', 'OtherModel', [
('id', models.AutoField(primary_key=True)),
('fk', models.ForeignKey('Model', models.CASCADE, to_field='field')),
('fo', models.ForeignObject('Model', models.CASCADE, from_fields=('fk',), to_fields=('field',))),
]))
operation = migrations.RenameField('Model', 'field', 'renamed')
new_state = state.clone()
operation.state_forwards('app', new_state)
self.assertEqual(new_state.models['app', 'othermodel'].fields['fk'].remote_field.field_name, 'renamed')
self.assertEqual(new_state.models['app', 'othermodel'].fields['fk'].from_fields, ['self'])
self.assertEqual(new_state.models['app', 'othermodel'].fields['fk'].to_fields, ('renamed',))
self.assertEqual(new_state.models['app', 'othermodel'].fields['fo'].from_fields, ('fk',))
self.assertEqual(new_state.models['app', 'othermodel'].fields['fo'].to_fields, ('renamed',))
operation = migrations.RenameField('OtherModel', 'fk', 'renamed_fk')
new_state = state.clone()
operation.state_forwards('app', new_state)
self.assertEqual(new_state.models['app', 'othermodel'].fields['renamed_fk'].remote_field.field_name, 'renamed')
self.assertEqual(new_state.models['app', 'othermodel'].fields['renamed_fk'].from_fields, ('self',))
self.assertEqual(new_state.models['app', 'othermodel'].fields['renamed_fk'].to_fields, ('renamed',))
self.assertEqual(new_state.models['app', 'othermodel'].fields['fo'].from_fields, ('renamed_fk',))
self.assertEqual(new_state.models['app', 'othermodel'].fields['fo'].to_fields, ('renamed',))
def test_alter_unique_together(self):
"""
Tests the AlterUniqueTogether operation.
"""
project_state = self.set_up_test_model("test_alunto")
# Test the state alteration
operation = migrations.AlterUniqueTogether("Pony", [("pink", "weight")])
self.assertEqual(operation.describe(), "Alter unique_together for Pony (1 constraint(s))")
self.assertEqual(
operation.migration_name_fragment,
'alter_pony_unique_together',
)
new_state = project_state.clone()
operation.state_forwards("test_alunto", new_state)
self.assertEqual(len(project_state.models["test_alunto", "pony"].options.get("unique_together", set())), 0)
self.assertEqual(len(new_state.models["test_alunto", "pony"].options.get("unique_together", set())), 1)
# Make sure we can insert duplicate rows
with connection.cursor() as cursor:
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
cursor.execute("DELETE FROM test_alunto_pony")
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alunto", editor, project_state, new_state)
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
with self.assertRaises(IntegrityError):
with atomic():
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
cursor.execute("DELETE FROM test_alunto_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alunto", editor, new_state, project_state)
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
cursor.execute("INSERT INTO test_alunto_pony (pink, weight) VALUES (1, 1)")
cursor.execute("DELETE FROM test_alunto_pony")
# Test flat unique_together
operation = migrations.AlterUniqueTogether("Pony", ("pink", "weight"))
operation.state_forwards("test_alunto", new_state)
self.assertEqual(len(new_state.models["test_alunto", "pony"].options.get("unique_together", set())), 1)
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterUniqueTogether")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'unique_together': {("pink", "weight")}})
def test_alter_unique_together_remove(self):
operation = migrations.AlterUniqueTogether("Pony", None)
self.assertEqual(operation.describe(), "Alter unique_together for Pony (0 constraint(s))")
def test_add_index(self):
"""
Test the AddIndex operation.
"""
project_state = self.set_up_test_model("test_adin")
msg = (
"Indexes passed to AddIndex operations require a name argument. "
"<Index: fields=['pink']> doesn't have one."
)
with self.assertRaisesMessage(ValueError, msg):
migrations.AddIndex("Pony", models.Index(fields=["pink"]))
index = models.Index(fields=["pink"], name="test_adin_pony_pink_idx")
operation = migrations.AddIndex("Pony", index)
self.assertEqual(operation.describe(), "Create index test_adin_pony_pink_idx on field(s) pink of model Pony")
self.assertEqual(
operation.migration_name_fragment,
'pony_test_adin_pony_pink_idx',
)
new_state = project_state.clone()
operation.state_forwards("test_adin", new_state)
# Test the database alteration
self.assertEqual(len(new_state.models["test_adin", "pony"].options['indexes']), 1)
self.assertIndexNotExists("test_adin_pony", ["pink"])
with connection.schema_editor() as editor:
operation.database_forwards("test_adin", editor, project_state, new_state)
self.assertIndexExists("test_adin_pony", ["pink"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_adin", editor, new_state, project_state)
self.assertIndexNotExists("test_adin_pony", ["pink"])
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AddIndex")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'index': index})
def test_remove_index(self):
"""
Test the RemoveIndex operation.
"""
project_state = self.set_up_test_model("test_rmin", multicol_index=True)
self.assertTableExists("test_rmin_pony")
self.assertIndexExists("test_rmin_pony", ["pink", "weight"])
operation = migrations.RemoveIndex("Pony", "pony_test_idx")
self.assertEqual(operation.describe(), "Remove index pony_test_idx from Pony")
self.assertEqual(
operation.migration_name_fragment,
'remove_pony_pony_test_idx',
)
new_state = project_state.clone()
operation.state_forwards("test_rmin", new_state)
# Test the state alteration
self.assertEqual(len(new_state.models["test_rmin", "pony"].options['indexes']), 0)
self.assertIndexExists("test_rmin_pony", ["pink", "weight"])
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_rmin", editor, project_state, new_state)
self.assertIndexNotExists("test_rmin_pony", ["pink", "weight"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_rmin", editor, new_state, project_state)
self.assertIndexExists("test_rmin_pony", ["pink", "weight"])
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RemoveIndex")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'name': "pony_test_idx"})
# Also test a field dropped with index - sqlite remake issue
operations = [
migrations.RemoveIndex("Pony", "pony_test_idx"),
migrations.RemoveField("Pony", "pink"),
]
self.assertColumnExists("test_rmin_pony", "pink")
self.assertIndexExists("test_rmin_pony", ["pink", "weight"])
# Test database alteration
new_state = project_state.clone()
self.apply_operations('test_rmin', new_state, operations=operations)
self.assertColumnNotExists("test_rmin_pony", "pink")
self.assertIndexNotExists("test_rmin_pony", ["pink", "weight"])
# And test reversal
self.unapply_operations("test_rmin", project_state, operations=operations)
self.assertIndexExists("test_rmin_pony", ["pink", "weight"])
def test_add_index_state_forwards(self):
project_state = self.set_up_test_model('test_adinsf')
index = models.Index(fields=['pink'], name='test_adinsf_pony_pink_idx')
old_model = project_state.apps.get_model('test_adinsf', 'Pony')
new_state = project_state.clone()
operation = migrations.AddIndex('Pony', index)
operation.state_forwards('test_adinsf', new_state)
new_model = new_state.apps.get_model('test_adinsf', 'Pony')
self.assertIsNot(old_model, new_model)
def test_remove_index_state_forwards(self):
project_state = self.set_up_test_model('test_rminsf')
index = models.Index(fields=['pink'], name='test_rminsf_pony_pink_idx')
migrations.AddIndex('Pony', index).state_forwards('test_rminsf', project_state)
old_model = project_state.apps.get_model('test_rminsf', 'Pony')
new_state = project_state.clone()
operation = migrations.RemoveIndex('Pony', 'test_rminsf_pony_pink_idx')
operation.state_forwards('test_rminsf', new_state)
new_model = new_state.apps.get_model('test_rminsf', 'Pony')
self.assertIsNot(old_model, new_model)
@skipUnlessDBFeature('supports_expression_indexes')
def test_add_func_index(self):
app_label = 'test_addfuncin'
index_name = f'{app_label}_pony_abs_idx'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(app_label)
index = models.Index(Abs('weight'), name=index_name)
operation = migrations.AddIndex('Pony', index)
self.assertEqual(
operation.describe(),
'Create index test_addfuncin_pony_abs_idx on Abs(F(weight)) on model Pony',
)
self.assertEqual(
operation.migration_name_fragment,
'pony_test_addfuncin_pony_abs_idx',
)
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['indexes']), 1)
self.assertIndexNameNotExists(table_name, index_name)
# Add index.
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexNameExists(table_name, index_name)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
self.assertIndexNameNotExists(table_name, index_name)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'AddIndex')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': 'Pony', 'index': index})
@skipUnlessDBFeature('supports_expression_indexes')
def test_remove_func_index(self):
app_label = 'test_rmfuncin'
index_name = f'{app_label}_pony_abs_idx'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(app_label, indexes=[
models.Index(Abs('weight'), name=index_name),
])
self.assertTableExists(table_name)
self.assertIndexNameExists(table_name, index_name)
operation = migrations.RemoveIndex('Pony', index_name)
self.assertEqual(
operation.describe(),
'Remove index test_rmfuncin_pony_abs_idx from Pony',
)
self.assertEqual(
operation.migration_name_fragment,
'remove_pony_test_rmfuncin_pony_abs_idx',
)
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['indexes']), 0)
# Remove index.
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexNameNotExists(table_name, index_name)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
self.assertIndexNameExists(table_name, index_name)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'RemoveIndex')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': 'Pony', 'name': index_name})
@skipUnlessDBFeature('supports_expression_indexes')
def test_alter_field_with_func_index(self):
app_label = 'test_alfuncin'
index_name = f'{app_label}_pony_idx'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(
app_label,
indexes=[models.Index(Abs('pink'), name=index_name)],
)
operation = migrations.AlterField('Pony', 'pink', models.IntegerField(null=True))
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexNameExists(table_name, index_name)
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
self.assertIndexNameExists(table_name, index_name)
def test_alter_field_with_index(self):
"""
Test AlterField operation with an index to ensure indexes created via
Meta.indexes don't get dropped with sqlite3 remake.
"""
project_state = self.set_up_test_model("test_alflin", index=True)
operation = migrations.AlterField("Pony", "pink", models.IntegerField(null=True))
new_state = project_state.clone()
operation.state_forwards("test_alflin", new_state)
# Test the database alteration
self.assertColumnNotNull("test_alflin_pony", "pink")
with connection.schema_editor() as editor:
operation.database_forwards("test_alflin", editor, project_state, new_state)
# Index hasn't been dropped
self.assertIndexExists("test_alflin_pony", ["pink"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alflin", editor, new_state, project_state)
# Ensure the index is still there
self.assertIndexExists("test_alflin_pony", ["pink"])
def test_alter_index_together(self):
"""
Tests the AlterIndexTogether operation.
"""
project_state = self.set_up_test_model("test_alinto")
# Test the state alteration
operation = migrations.AlterIndexTogether("Pony", [("pink", "weight")])
self.assertEqual(operation.describe(), "Alter index_together for Pony (1 constraint(s))")
self.assertEqual(
operation.migration_name_fragment,
'alter_pony_index_together',
)
new_state = project_state.clone()
operation.state_forwards("test_alinto", new_state)
self.assertEqual(len(project_state.models["test_alinto", "pony"].options.get("index_together", set())), 0)
self.assertEqual(len(new_state.models["test_alinto", "pony"].options.get("index_together", set())), 1)
# Make sure there's no matching index
self.assertIndexNotExists("test_alinto_pony", ["pink", "weight"])
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alinto", editor, project_state, new_state)
self.assertIndexExists("test_alinto_pony", ["pink", "weight"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alinto", editor, new_state, project_state)
self.assertIndexNotExists("test_alinto_pony", ["pink", "weight"])
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterIndexTogether")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'index_together': {("pink", "weight")}})
def test_alter_index_together_remove(self):
operation = migrations.AlterIndexTogether("Pony", None)
self.assertEqual(operation.describe(), "Alter index_together for Pony (0 constraint(s))")
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_alter_index_together_remove_with_unique_together(self):
app_label = 'test_alintoremove_wunto'
table_name = '%s_pony' % app_label
project_state = self.set_up_test_model(app_label, unique_together=True)
self.assertUniqueConstraintExists(table_name, ['pink', 'weight'])
# Add index together.
new_state = project_state.clone()
operation = migrations.AlterIndexTogether('Pony', [('pink', 'weight')])
operation.state_forwards(app_label, new_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexExists(table_name, ['pink', 'weight'])
# Remove index together.
project_state = new_state
new_state = project_state.clone()
operation = migrations.AlterIndexTogether('Pony', set())
operation.state_forwards(app_label, new_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexNotExists(table_name, ['pink', 'weight'])
self.assertUniqueConstraintExists(table_name, ['pink', 'weight'])
@skipUnlessDBFeature('supports_table_check_constraints')
def test_add_constraint(self):
project_state = self.set_up_test_model("test_addconstraint")
gt_check = models.Q(pink__gt=2)
gt_constraint = models.CheckConstraint(check=gt_check, name="test_add_constraint_pony_pink_gt_2")
gt_operation = migrations.AddConstraint("Pony", gt_constraint)
self.assertEqual(
gt_operation.describe(), "Create constraint test_add_constraint_pony_pink_gt_2 on model Pony"
)
self.assertEqual(
gt_operation.migration_name_fragment,
'pony_test_add_constraint_pony_pink_gt_2',
)
# Test the state alteration
new_state = project_state.clone()
gt_operation.state_forwards("test_addconstraint", new_state)
self.assertEqual(len(new_state.models["test_addconstraint", "pony"].options["constraints"]), 1)
Pony = new_state.apps.get_model("test_addconstraint", "Pony")
self.assertEqual(len(Pony._meta.constraints), 1)
# Test the database alteration
with connection.schema_editor() as editor:
gt_operation.database_forwards("test_addconstraint", editor, project_state, new_state)
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=1, weight=1.0)
# Add another one.
lt_check = models.Q(pink__lt=100)
lt_constraint = models.CheckConstraint(check=lt_check, name="test_add_constraint_pony_pink_lt_100")
lt_operation = migrations.AddConstraint("Pony", lt_constraint)
lt_operation.state_forwards("test_addconstraint", new_state)
self.assertEqual(len(new_state.models["test_addconstraint", "pony"].options["constraints"]), 2)
Pony = new_state.apps.get_model("test_addconstraint", "Pony")
self.assertEqual(len(Pony._meta.constraints), 2)
with connection.schema_editor() as editor:
lt_operation.database_forwards("test_addconstraint", editor, project_state, new_state)
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=100, weight=1.0)
# Test reversal
with connection.schema_editor() as editor:
gt_operation.database_backwards("test_addconstraint", editor, new_state, project_state)
Pony.objects.create(pink=1, weight=1.0)
# Test deconstruction
definition = gt_operation.deconstruct()
self.assertEqual(definition[0], "AddConstraint")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'constraint': gt_constraint})
@skipUnlessDBFeature('supports_table_check_constraints')
def test_add_constraint_percent_escaping(self):
app_label = 'add_constraint_string_quoting'
operations = [
migrations.CreateModel(
'Author',
fields=[
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=100)),
('surname', models.CharField(max_length=100, default='')),
('rebate', models.CharField(max_length=100)),
],
),
]
from_state = self.apply_operations(app_label, ProjectState(), operations)
# "%" generated in startswith lookup should be escaped in a way that is
# considered a leading wildcard.
check = models.Q(name__startswith='Albert')
constraint = models.CheckConstraint(check=check, name='name_constraint')
operation = migrations.AddConstraint('Author', constraint)
to_state = from_state.clone()
operation.state_forwards(app_label, to_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, from_state, to_state)
Author = to_state.apps.get_model(app_label, 'Author')
with self.assertRaises(IntegrityError), transaction.atomic():
Author.objects.create(name='Artur')
# Literal "%" should be escaped in a way that is not a considered a
# wildcard.
check = models.Q(rebate__endswith='%')
constraint = models.CheckConstraint(check=check, name='rebate_constraint')
operation = migrations.AddConstraint('Author', constraint)
from_state = to_state
to_state = from_state.clone()
operation.state_forwards(app_label, to_state)
Author = to_state.apps.get_model(app_label, 'Author')
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, from_state, to_state)
Author = to_state.apps.get_model(app_label, 'Author')
with self.assertRaises(IntegrityError), transaction.atomic():
Author.objects.create(name='Albert', rebate='10$')
author = Author.objects.create(name='Albert', rebate='10%')
self.assertEqual(Author.objects.get(), author)
# Right-hand-side baked "%" literals should not be used for parameters
# interpolation.
check = ~models.Q(surname__startswith=models.F('name'))
constraint = models.CheckConstraint(check=check, name='name_constraint_rhs')
operation = migrations.AddConstraint('Author', constraint)
from_state = to_state
to_state = from_state.clone()
operation.state_forwards(app_label, to_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, from_state, to_state)
Author = to_state.apps.get_model(app_label, 'Author')
with self.assertRaises(IntegrityError), transaction.atomic():
Author.objects.create(name='Albert', surname='Alberto')
@skipUnlessDBFeature('supports_table_check_constraints')
def test_add_or_constraint(self):
app_label = 'test_addorconstraint'
constraint_name = 'add_constraint_or'
from_state = self.set_up_test_model(app_label)
check = models.Q(pink__gt=2, weight__gt=2) | models.Q(weight__lt=0)
constraint = models.CheckConstraint(check=check, name=constraint_name)
operation = migrations.AddConstraint('Pony', constraint)
to_state = from_state.clone()
operation.state_forwards(app_label, to_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, from_state, to_state)
Pony = to_state.apps.get_model(app_label, 'Pony')
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=2, weight=3.0)
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=3, weight=1.0)
Pony.objects.bulk_create([
Pony(pink=3, weight=-1.0),
Pony(pink=1, weight=-1.0),
Pony(pink=3, weight=3.0),
])
@skipUnlessDBFeature('supports_table_check_constraints')
def test_add_constraint_combinable(self):
app_label = 'test_addconstraint_combinable'
operations = [
migrations.CreateModel(
'Book',
fields=[
('id', models.AutoField(primary_key=True)),
('read', models.PositiveIntegerField()),
('unread', models.PositiveIntegerField()),
],
),
]
from_state = self.apply_operations(app_label, ProjectState(), operations)
constraint = models.CheckConstraint(
check=models.Q(read=(100 - models.F('unread'))),
name='test_addconstraint_combinable_sum_100',
)
operation = migrations.AddConstraint('Book', constraint)
to_state = from_state.clone()
operation.state_forwards(app_label, to_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, from_state, to_state)
Book = to_state.apps.get_model(app_label, 'Book')
with self.assertRaises(IntegrityError), transaction.atomic():
Book.objects.create(read=70, unread=10)
Book.objects.create(read=70, unread=30)
@skipUnlessDBFeature('supports_table_check_constraints')
def test_remove_constraint(self):
project_state = self.set_up_test_model("test_removeconstraint", constraints=[
models.CheckConstraint(check=models.Q(pink__gt=2), name="test_remove_constraint_pony_pink_gt_2"),
models.CheckConstraint(check=models.Q(pink__lt=100), name="test_remove_constraint_pony_pink_lt_100"),
])
gt_operation = migrations.RemoveConstraint("Pony", "test_remove_constraint_pony_pink_gt_2")
self.assertEqual(
gt_operation.describe(), "Remove constraint test_remove_constraint_pony_pink_gt_2 from model Pony"
)
self.assertEqual(
gt_operation.migration_name_fragment,
'remove_pony_test_remove_constraint_pony_pink_gt_2',
)
# Test state alteration
new_state = project_state.clone()
gt_operation.state_forwards("test_removeconstraint", new_state)
self.assertEqual(len(new_state.models["test_removeconstraint", "pony"].options['constraints']), 1)
Pony = new_state.apps.get_model("test_removeconstraint", "Pony")
self.assertEqual(len(Pony._meta.constraints), 1)
# Test database alteration
with connection.schema_editor() as editor:
gt_operation.database_forwards("test_removeconstraint", editor, project_state, new_state)
Pony.objects.create(pink=1, weight=1.0).delete()
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=100, weight=1.0)
# Remove the other one.
lt_operation = migrations.RemoveConstraint("Pony", "test_remove_constraint_pony_pink_lt_100")
lt_operation.state_forwards("test_removeconstraint", new_state)
self.assertEqual(len(new_state.models["test_removeconstraint", "pony"].options['constraints']), 0)
Pony = new_state.apps.get_model("test_removeconstraint", "Pony")
self.assertEqual(len(Pony._meta.constraints), 0)
with connection.schema_editor() as editor:
lt_operation.database_forwards("test_removeconstraint", editor, project_state, new_state)
Pony.objects.create(pink=100, weight=1.0).delete()
# Test reversal
with connection.schema_editor() as editor:
gt_operation.database_backwards("test_removeconstraint", editor, new_state, project_state)
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=1, weight=1.0)
# Test deconstruction
definition = gt_operation.deconstruct()
self.assertEqual(definition[0], "RemoveConstraint")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': "Pony", 'name': "test_remove_constraint_pony_pink_gt_2"})
def test_add_partial_unique_constraint(self):
project_state = self.set_up_test_model('test_addpartialuniqueconstraint')
partial_unique_constraint = models.UniqueConstraint(
fields=['pink'],
condition=models.Q(weight__gt=5),
name='test_constraint_pony_pink_for_weight_gt_5_uniq',
)
operation = migrations.AddConstraint('Pony', partial_unique_constraint)
self.assertEqual(
operation.describe(),
'Create constraint test_constraint_pony_pink_for_weight_gt_5_uniq '
'on model Pony'
)
# Test the state alteration
new_state = project_state.clone()
operation.state_forwards('test_addpartialuniqueconstraint', new_state)
self.assertEqual(len(new_state.models['test_addpartialuniqueconstraint', 'pony'].options['constraints']), 1)
Pony = new_state.apps.get_model('test_addpartialuniqueconstraint', 'Pony')
self.assertEqual(len(Pony._meta.constraints), 1)
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards('test_addpartialuniqueconstraint', editor, project_state, new_state)
# Test constraint works
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=6.0)
if connection.features.supports_partial_indexes:
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=1, weight=7.0)
else:
Pony.objects.create(pink=1, weight=7.0)
# Test reversal
with connection.schema_editor() as editor:
operation.database_backwards('test_addpartialuniqueconstraint', editor, new_state, project_state)
# Test constraint doesn't work
Pony.objects.create(pink=1, weight=7.0)
# Test deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], 'AddConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': 'Pony', 'constraint': partial_unique_constraint})
def test_remove_partial_unique_constraint(self):
project_state = self.set_up_test_model('test_removepartialuniqueconstraint', constraints=[
models.UniqueConstraint(
fields=['pink'],
condition=models.Q(weight__gt=5),
name='test_constraint_pony_pink_for_weight_gt_5_uniq',
),
])
gt_operation = migrations.RemoveConstraint('Pony', 'test_constraint_pony_pink_for_weight_gt_5_uniq')
self.assertEqual(
gt_operation.describe(), 'Remove constraint test_constraint_pony_pink_for_weight_gt_5_uniq from model Pony'
)
# Test state alteration
new_state = project_state.clone()
gt_operation.state_forwards('test_removepartialuniqueconstraint', new_state)
self.assertEqual(len(new_state.models['test_removepartialuniqueconstraint', 'pony'].options['constraints']), 0)
Pony = new_state.apps.get_model('test_removepartialuniqueconstraint', 'Pony')
self.assertEqual(len(Pony._meta.constraints), 0)
# Test database alteration
with connection.schema_editor() as editor:
gt_operation.database_forwards('test_removepartialuniqueconstraint', editor, project_state, new_state)
# Test constraint doesn't work
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=6.0)
Pony.objects.create(pink=1, weight=7.0).delete()
# Test reversal
with connection.schema_editor() as editor:
gt_operation.database_backwards('test_removepartialuniqueconstraint', editor, new_state, project_state)
# Test constraint works
if connection.features.supports_partial_indexes:
with self.assertRaises(IntegrityError), transaction.atomic():
Pony.objects.create(pink=1, weight=7.0)
else:
Pony.objects.create(pink=1, weight=7.0)
# Test deconstruction
definition = gt_operation.deconstruct()
self.assertEqual(definition[0], 'RemoveConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {
'model_name': 'Pony',
'name': 'test_constraint_pony_pink_for_weight_gt_5_uniq',
})
def test_add_deferred_unique_constraint(self):
app_label = 'test_adddeferred_uc'
project_state = self.set_up_test_model(app_label)
deferred_unique_constraint = models.UniqueConstraint(
fields=['pink'],
name='deferred_pink_constraint_add',
deferrable=models.Deferrable.DEFERRED,
)
operation = migrations.AddConstraint('Pony', deferred_unique_constraint)
self.assertEqual(
operation.describe(),
'Create constraint deferred_pink_constraint_add on model Pony',
)
# Add constraint.
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 1)
Pony = new_state.apps.get_model(app_label, 'Pony')
self.assertEqual(len(Pony._meta.constraints), 1)
with connection.schema_editor() as editor, CaptureQueriesContext(connection) as ctx:
operation.database_forwards(app_label, editor, project_state, new_state)
Pony.objects.create(pink=1, weight=4.0)
if connection.features.supports_deferrable_unique_constraints:
# Unique constraint is deferred.
with transaction.atomic():
obj = Pony.objects.create(pink=1, weight=4.0)
obj.pink = 2
obj.save()
# Constraint behavior can be changed with SET CONSTRAINTS.
with self.assertRaises(IntegrityError):
with transaction.atomic(), connection.cursor() as cursor:
quoted_name = connection.ops.quote_name(deferred_unique_constraint.name)
cursor.execute('SET CONSTRAINTS %s IMMEDIATE' % quoted_name)
obj = Pony.objects.create(pink=1, weight=4.0)
obj.pink = 3
obj.save()
else:
self.assertEqual(len(ctx), 0)
Pony.objects.create(pink=1, weight=4.0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
# Constraint doesn't work.
Pony.objects.create(pink=1, weight=4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'AddConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(
definition[2],
{'model_name': 'Pony', 'constraint': deferred_unique_constraint},
)
def test_remove_deferred_unique_constraint(self):
app_label = 'test_removedeferred_uc'
deferred_unique_constraint = models.UniqueConstraint(
fields=['pink'],
name='deferred_pink_constraint_rm',
deferrable=models.Deferrable.DEFERRED,
)
project_state = self.set_up_test_model(app_label, constraints=[deferred_unique_constraint])
operation = migrations.RemoveConstraint('Pony', deferred_unique_constraint.name)
self.assertEqual(
operation.describe(),
'Remove constraint deferred_pink_constraint_rm from model Pony',
)
# Remove constraint.
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 0)
Pony = new_state.apps.get_model(app_label, 'Pony')
self.assertEqual(len(Pony._meta.constraints), 0)
with connection.schema_editor() as editor, CaptureQueriesContext(connection) as ctx:
operation.database_forwards(app_label, editor, project_state, new_state)
# Constraint doesn't work.
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=4.0).delete()
if not connection.features.supports_deferrable_unique_constraints:
self.assertEqual(len(ctx), 0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
if connection.features.supports_deferrable_unique_constraints:
# Unique constraint is deferred.
with transaction.atomic():
obj = Pony.objects.create(pink=1, weight=4.0)
obj.pink = 2
obj.save()
# Constraint behavior can be changed with SET CONSTRAINTS.
with self.assertRaises(IntegrityError):
with transaction.atomic(), connection.cursor() as cursor:
quoted_name = connection.ops.quote_name(deferred_unique_constraint.name)
cursor.execute('SET CONSTRAINTS %s IMMEDIATE' % quoted_name)
obj = Pony.objects.create(pink=1, weight=4.0)
obj.pink = 3
obj.save()
else:
Pony.objects.create(pink=1, weight=4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'RemoveConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {
'model_name': 'Pony',
'name': 'deferred_pink_constraint_rm',
})
def test_add_covering_unique_constraint(self):
app_label = 'test_addcovering_uc'
project_state = self.set_up_test_model(app_label)
covering_unique_constraint = models.UniqueConstraint(
fields=['pink'],
name='covering_pink_constraint_add',
include=['weight'],
)
operation = migrations.AddConstraint('Pony', covering_unique_constraint)
self.assertEqual(
operation.describe(),
'Create constraint covering_pink_constraint_add on model Pony',
)
# Add constraint.
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 1)
Pony = new_state.apps.get_model(app_label, 'Pony')
self.assertEqual(len(Pony._meta.constraints), 1)
with connection.schema_editor() as editor, CaptureQueriesContext(connection) as ctx:
operation.database_forwards(app_label, editor, project_state, new_state)
Pony.objects.create(pink=1, weight=4.0)
if connection.features.supports_covering_indexes:
with self.assertRaises(IntegrityError):
Pony.objects.create(pink=1, weight=4.0)
else:
self.assertEqual(len(ctx), 0)
Pony.objects.create(pink=1, weight=4.0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
# Constraint doesn't work.
Pony.objects.create(pink=1, weight=4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'AddConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(
definition[2],
{'model_name': 'Pony', 'constraint': covering_unique_constraint},
)
def test_remove_covering_unique_constraint(self):
app_label = 'test_removecovering_uc'
covering_unique_constraint = models.UniqueConstraint(
fields=['pink'],
name='covering_pink_constraint_rm',
include=['weight'],
)
project_state = self.set_up_test_model(app_label, constraints=[covering_unique_constraint])
operation = migrations.RemoveConstraint('Pony', covering_unique_constraint.name)
self.assertEqual(
operation.describe(),
'Remove constraint covering_pink_constraint_rm from model Pony',
)
# Remove constraint.
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 0)
Pony = new_state.apps.get_model(app_label, 'Pony')
self.assertEqual(len(Pony._meta.constraints), 0)
with connection.schema_editor() as editor, CaptureQueriesContext(connection) as ctx:
operation.database_forwards(app_label, editor, project_state, new_state)
# Constraint doesn't work.
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=4.0).delete()
if not connection.features.supports_covering_indexes:
self.assertEqual(len(ctx), 0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
if connection.features.supports_covering_indexes:
with self.assertRaises(IntegrityError):
Pony.objects.create(pink=1, weight=4.0)
else:
Pony.objects.create(pink=1, weight=4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'RemoveConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {
'model_name': 'Pony',
'name': 'covering_pink_constraint_rm',
})
def test_alter_field_with_func_unique_constraint(self):
app_label = 'test_alfuncuc'
constraint_name = f'{app_label}_pony_uq'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(
app_label,
constraints=[models.UniqueConstraint('pink', 'weight', name=constraint_name)]
)
operation = migrations.AlterField('Pony', 'pink', models.IntegerField(null=True))
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
if connection.features.supports_expression_indexes:
self.assertIndexNameExists(table_name, constraint_name)
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
if connection.features.supports_expression_indexes:
self.assertIndexNameExists(table_name, constraint_name)
def test_add_func_unique_constraint(self):
app_label = 'test_adfuncuc'
constraint_name = f'{app_label}_pony_abs_uq'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(app_label)
constraint = models.UniqueConstraint(Abs('weight'), name=constraint_name)
operation = migrations.AddConstraint('Pony', constraint)
self.assertEqual(
operation.describe(),
'Create constraint test_adfuncuc_pony_abs_uq on model Pony',
)
self.assertEqual(
operation.migration_name_fragment,
'pony_test_adfuncuc_pony_abs_uq',
)
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 1)
self.assertIndexNameNotExists(table_name, constraint_name)
# Add constraint.
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
Pony = new_state.apps.get_model(app_label, 'Pony')
Pony.objects.create(weight=4.0)
if connection.features.supports_expression_indexes:
self.assertIndexNameExists(table_name, constraint_name)
with self.assertRaises(IntegrityError):
Pony.objects.create(weight=-4.0)
else:
self.assertIndexNameNotExists(table_name, constraint_name)
Pony.objects.create(weight=-4.0)
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
self.assertIndexNameNotExists(table_name, constraint_name)
# Constraint doesn't work.
Pony.objects.create(weight=-4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'AddConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(
definition[2],
{'model_name': 'Pony', 'constraint': constraint},
)
def test_remove_func_unique_constraint(self):
app_label = 'test_rmfuncuc'
constraint_name = f'{app_label}_pony_abs_uq'
table_name = f'{app_label}_pony'
project_state = self.set_up_test_model(app_label, constraints=[
models.UniqueConstraint(Abs('weight'), name=constraint_name),
])
self.assertTableExists(table_name)
if connection.features.supports_expression_indexes:
self.assertIndexNameExists(table_name, constraint_name)
operation = migrations.RemoveConstraint('Pony', constraint_name)
self.assertEqual(
operation.describe(),
'Remove constraint test_rmfuncuc_pony_abs_uq from model Pony',
)
self.assertEqual(
operation.migration_name_fragment,
'remove_pony_test_rmfuncuc_pony_abs_uq',
)
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
self.assertEqual(len(new_state.models[app_label, 'pony'].options['constraints']), 0)
Pony = new_state.apps.get_model(app_label, 'Pony')
self.assertEqual(len(Pony._meta.constraints), 0)
# Remove constraint.
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
self.assertIndexNameNotExists(table_name, constraint_name)
# Constraint doesn't work.
Pony.objects.create(pink=1, weight=4.0)
Pony.objects.create(pink=1, weight=-4.0).delete()
# Reversal.
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
if connection.features.supports_expression_indexes:
self.assertIndexNameExists(table_name, constraint_name)
with self.assertRaises(IntegrityError):
Pony.objects.create(weight=-4.0)
else:
self.assertIndexNameNotExists(table_name, constraint_name)
Pony.objects.create(weight=-4.0)
# Deconstruction.
definition = operation.deconstruct()
self.assertEqual(definition[0], 'RemoveConstraint')
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'model_name': 'Pony', 'name': constraint_name})
def test_alter_model_options(self):
"""
Tests the AlterModelOptions operation.
"""
project_state = self.set_up_test_model("test_almoop")
# Test the state alteration (no DB alteration to test)
operation = migrations.AlterModelOptions("Pony", {"permissions": [("can_groom", "Can groom")]})
self.assertEqual(operation.describe(), "Change Meta options on Pony")
self.assertEqual(operation.migration_name_fragment, 'alter_pony_options')
new_state = project_state.clone()
operation.state_forwards("test_almoop", new_state)
self.assertEqual(len(project_state.models["test_almoop", "pony"].options.get("permissions", [])), 0)
self.assertEqual(len(new_state.models["test_almoop", "pony"].options.get("permissions", [])), 1)
self.assertEqual(new_state.models["test_almoop", "pony"].options["permissions"][0][0], "can_groom")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterModelOptions")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'options': {"permissions": [("can_groom", "Can groom")]}})
def test_alter_model_options_emptying(self):
"""
The AlterModelOptions operation removes keys from the dict (#23121)
"""
project_state = self.set_up_test_model("test_almoop", options=True)
# Test the state alteration (no DB alteration to test)
operation = migrations.AlterModelOptions("Pony", {})
self.assertEqual(operation.describe(), "Change Meta options on Pony")
new_state = project_state.clone()
operation.state_forwards("test_almoop", new_state)
self.assertEqual(len(project_state.models["test_almoop", "pony"].options.get("permissions", [])), 1)
self.assertEqual(len(new_state.models["test_almoop", "pony"].options.get("permissions", [])), 0)
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterModelOptions")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'options': {}})
def test_alter_order_with_respect_to(self):
"""
Tests the AlterOrderWithRespectTo operation.
"""
project_state = self.set_up_test_model("test_alorwrtto", related_model=True)
# Test the state alteration
operation = migrations.AlterOrderWithRespectTo("Rider", "pony")
self.assertEqual(operation.describe(), "Set order_with_respect_to on Rider to pony")
self.assertEqual(
operation.migration_name_fragment,
'alter_rider_order_with_respect_to',
)
new_state = project_state.clone()
operation.state_forwards("test_alorwrtto", new_state)
self.assertIsNone(
project_state.models["test_alorwrtto", "rider"].options.get("order_with_respect_to", None)
)
self.assertEqual(
new_state.models["test_alorwrtto", "rider"].options.get("order_with_respect_to", None),
"pony"
)
# Make sure there's no matching index
self.assertColumnNotExists("test_alorwrtto_rider", "_order")
# Create some rows before alteration
rendered_state = project_state.apps
pony = rendered_state.get_model("test_alorwrtto", "Pony").objects.create(weight=50)
rider1 = rendered_state.get_model("test_alorwrtto", "Rider").objects.create(pony=pony)
rider1.friend = rider1
rider1.save()
rider2 = rendered_state.get_model("test_alorwrtto", "Rider").objects.create(pony=pony)
rider2.friend = rider2
rider2.save()
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alorwrtto", editor, project_state, new_state)
self.assertColumnExists("test_alorwrtto_rider", "_order")
# Check for correct value in rows
updated_riders = new_state.apps.get_model("test_alorwrtto", "Rider").objects.all()
self.assertEqual(updated_riders[0]._order, 0)
self.assertEqual(updated_riders[1]._order, 0)
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alorwrtto", editor, new_state, project_state)
self.assertColumnNotExists("test_alorwrtto_rider", "_order")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterOrderWithRespectTo")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Rider", 'order_with_respect_to': "pony"})
def test_alter_model_managers(self):
"""
The managers on a model are set.
"""
project_state = self.set_up_test_model("test_almoma")
# Test the state alteration
operation = migrations.AlterModelManagers(
"Pony",
managers=[
("food_qs", FoodQuerySet.as_manager()),
("food_mgr", FoodManager("a", "b")),
("food_mgr_kwargs", FoodManager("x", "y", 3, 4)),
]
)
self.assertEqual(operation.describe(), "Change managers on Pony")
self.assertEqual(operation.migration_name_fragment, 'alter_pony_managers')
managers = project_state.models["test_almoma", "pony"].managers
self.assertEqual(managers, [])
new_state = project_state.clone()
operation.state_forwards("test_almoma", new_state)
self.assertIn(("test_almoma", "pony"), new_state.models)
managers = new_state.models["test_almoma", "pony"].managers
self.assertEqual(managers[0][0], "food_qs")
self.assertIsInstance(managers[0][1], models.Manager)
self.assertEqual(managers[1][0], "food_mgr")
self.assertIsInstance(managers[1][1], FoodManager)
self.assertEqual(managers[1][1].args, ("a", "b", 1, 2))
self.assertEqual(managers[2][0], "food_mgr_kwargs")
self.assertIsInstance(managers[2][1], FoodManager)
self.assertEqual(managers[2][1].args, ("x", "y", 3, 4))
rendered_state = new_state.apps
model = rendered_state.get_model('test_almoma', 'pony')
self.assertIsInstance(model.food_qs, models.Manager)
self.assertIsInstance(model.food_mgr, FoodManager)
self.assertIsInstance(model.food_mgr_kwargs, FoodManager)
def test_alter_model_managers_emptying(self):
"""
The managers on a model are set.
"""
project_state = self.set_up_test_model("test_almomae", manager_model=True)
# Test the state alteration
operation = migrations.AlterModelManagers("Food", managers=[])
self.assertEqual(operation.describe(), "Change managers on Food")
self.assertIn(("test_almomae", "food"), project_state.models)
managers = project_state.models["test_almomae", "food"].managers
self.assertEqual(managers[0][0], "food_qs")
self.assertIsInstance(managers[0][1], models.Manager)
self.assertEqual(managers[1][0], "food_mgr")
self.assertIsInstance(managers[1][1], FoodManager)
self.assertEqual(managers[1][1].args, ("a", "b", 1, 2))
self.assertEqual(managers[2][0], "food_mgr_kwargs")
self.assertIsInstance(managers[2][1], FoodManager)
self.assertEqual(managers[2][1].args, ("x", "y", 3, 4))
new_state = project_state.clone()
operation.state_forwards("test_almomae", new_state)
managers = new_state.models["test_almomae", "food"].managers
self.assertEqual(managers, [])
def test_alter_fk(self):
"""
Creating and then altering an FK works correctly
and deals with the pending SQL (#23091)
"""
project_state = self.set_up_test_model("test_alfk")
# Test adding and then altering the FK in one go
create_operation = migrations.CreateModel(
name="Rider",
fields=[
("id", models.AutoField(primary_key=True)),
("pony", models.ForeignKey("Pony", models.CASCADE)),
],
)
create_state = project_state.clone()
create_operation.state_forwards("test_alfk", create_state)
alter_operation = migrations.AlterField(
model_name='Rider',
name='pony',
field=models.ForeignKey("Pony", models.CASCADE, editable=False),
)
alter_state = create_state.clone()
alter_operation.state_forwards("test_alfk", alter_state)
with connection.schema_editor() as editor:
create_operation.database_forwards("test_alfk", editor, project_state, create_state)
alter_operation.database_forwards("test_alfk", editor, create_state, alter_state)
def test_alter_fk_non_fk(self):
"""
Altering an FK to a non-FK works (#23244)
"""
# Test the state alteration
operation = migrations.AlterField(
model_name="Rider",
name="pony",
field=models.FloatField(),
)
project_state, new_state = self.make_test_state("test_afknfk", operation, related_model=True)
# Test the database alteration
self.assertColumnExists("test_afknfk_rider", "pony_id")
self.assertColumnNotExists("test_afknfk_rider", "pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_afknfk", editor, project_state, new_state)
self.assertColumnExists("test_afknfk_rider", "pony")
self.assertColumnNotExists("test_afknfk_rider", "pony_id")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_afknfk", editor, new_state, project_state)
self.assertColumnExists("test_afknfk_rider", "pony_id")
self.assertColumnNotExists("test_afknfk_rider", "pony")
def test_run_sql(self):
"""
Tests the RunSQL operation.
"""
project_state = self.set_up_test_model("test_runsql")
# Create the operation
operation = migrations.RunSQL(
# Use a multi-line string with a comment to test splitting on SQLite and MySQL respectively
"CREATE TABLE i_love_ponies (id int, special_thing varchar(15));\n"
"INSERT INTO i_love_ponies (id, special_thing) VALUES (1, 'i love ponies'); -- this is magic!\n"
"INSERT INTO i_love_ponies (id, special_thing) VALUES (2, 'i love django');\n"
"UPDATE i_love_ponies SET special_thing = 'Ponies' WHERE special_thing LIKE '%%ponies';"
"UPDATE i_love_ponies SET special_thing = 'Django' WHERE special_thing LIKE '%django';",
# Run delete queries to test for parameter substitution failure
# reported in #23426
"DELETE FROM i_love_ponies WHERE special_thing LIKE '%Django%';"
"DELETE FROM i_love_ponies WHERE special_thing LIKE '%%Ponies%%';"
"DROP TABLE i_love_ponies",
state_operations=[migrations.CreateModel("SomethingElse", [("id", models.AutoField(primary_key=True))])],
)
self.assertEqual(operation.describe(), "Raw SQL operation")
# Test the state alteration
new_state = project_state.clone()
operation.state_forwards("test_runsql", new_state)
self.assertEqual(len(new_state.models["test_runsql", "somethingelse"].fields), 1)
# Make sure there's no table
self.assertTableNotExists("i_love_ponies")
# Test SQL collection
with connection.schema_editor(collect_sql=True) as editor:
operation.database_forwards("test_runsql", editor, project_state, new_state)
self.assertIn("LIKE '%%ponies';", "\n".join(editor.collected_sql))
operation.database_backwards("test_runsql", editor, project_state, new_state)
self.assertIn("LIKE '%%Ponies%%';", "\n".join(editor.collected_sql))
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_runsql", editor, project_state, new_state)
self.assertTableExists("i_love_ponies")
# Make sure all the SQL was processed
with connection.cursor() as cursor:
cursor.execute("SELECT COUNT(*) FROM i_love_ponies")
self.assertEqual(cursor.fetchall()[0][0], 2)
cursor.execute("SELECT COUNT(*) FROM i_love_ponies WHERE special_thing = 'Django'")
self.assertEqual(cursor.fetchall()[0][0], 1)
cursor.execute("SELECT COUNT(*) FROM i_love_ponies WHERE special_thing = 'Ponies'")
self.assertEqual(cursor.fetchall()[0][0], 1)
# And test reversal
self.assertTrue(operation.reversible)
with connection.schema_editor() as editor:
operation.database_backwards("test_runsql", editor, new_state, project_state)
self.assertTableNotExists("i_love_ponies")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RunSQL")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["reverse_sql", "sql", "state_operations"])
# And elidable reduction
self.assertIs(False, operation.reduce(operation, []))
elidable_operation = migrations.RunSQL('SELECT 1 FROM void;', elidable=True)
self.assertEqual(elidable_operation.reduce(operation, []), [operation])
def test_run_sql_params(self):
"""
#23426 - RunSQL should accept parameters.
"""
project_state = self.set_up_test_model("test_runsql")
# Create the operation
operation = migrations.RunSQL(
["CREATE TABLE i_love_ponies (id int, special_thing varchar(15));"],
["DROP TABLE i_love_ponies"],
)
param_operation = migrations.RunSQL(
# forwards
(
"INSERT INTO i_love_ponies (id, special_thing) VALUES (1, 'Django');",
["INSERT INTO i_love_ponies (id, special_thing) VALUES (2, %s);", ['Ponies']],
("INSERT INTO i_love_ponies (id, special_thing) VALUES (%s, %s);", (3, 'Python',)),
),
# backwards
[
"DELETE FROM i_love_ponies WHERE special_thing = 'Django';",
["DELETE FROM i_love_ponies WHERE special_thing = 'Ponies';", None],
("DELETE FROM i_love_ponies WHERE id = %s OR special_thing = %s;", [3, 'Python']),
]
)
# Make sure there's no table
self.assertTableNotExists("i_love_ponies")
new_state = project_state.clone()
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_runsql", editor, project_state, new_state)
# Test parameter passing
with connection.schema_editor() as editor:
param_operation.database_forwards("test_runsql", editor, project_state, new_state)
# Make sure all the SQL was processed
with connection.cursor() as cursor:
cursor.execute("SELECT COUNT(*) FROM i_love_ponies")
self.assertEqual(cursor.fetchall()[0][0], 3)
with connection.schema_editor() as editor:
param_operation.database_backwards("test_runsql", editor, new_state, project_state)
with connection.cursor() as cursor:
cursor.execute("SELECT COUNT(*) FROM i_love_ponies")
self.assertEqual(cursor.fetchall()[0][0], 0)
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_runsql", editor, new_state, project_state)
self.assertTableNotExists("i_love_ponies")
def test_run_sql_params_invalid(self):
"""
#23426 - RunSQL should fail when a list of statements with an incorrect
number of tuples is given.
"""
project_state = self.set_up_test_model("test_runsql")
new_state = project_state.clone()
operation = migrations.RunSQL(
# forwards
[
["INSERT INTO foo (bar) VALUES ('buz');"]
],
# backwards
(
("DELETE FROM foo WHERE bar = 'buz';", 'invalid', 'parameter count'),
),
)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, "Expected a 2-tuple but got 1"):
operation.database_forwards("test_runsql", editor, project_state, new_state)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, "Expected a 2-tuple but got 3"):
operation.database_backwards("test_runsql", editor, new_state, project_state)
def test_run_sql_noop(self):
"""
#24098 - Tests no-op RunSQL operations.
"""
operation = migrations.RunSQL(migrations.RunSQL.noop, migrations.RunSQL.noop)
with connection.schema_editor() as editor:
operation.database_forwards("test_runsql", editor, None, None)
operation.database_backwards("test_runsql", editor, None, None)
def test_run_sql_add_missing_semicolon_on_collect_sql(self):
project_state = self.set_up_test_model('test_runsql')
new_state = project_state.clone()
tests = [
'INSERT INTO test_runsql_pony (pink, weight) VALUES (1, 1);\n',
'INSERT INTO test_runsql_pony (pink, weight) VALUES (1, 1)\n',
]
for sql in tests:
with self.subTest(sql=sql):
operation = migrations.RunSQL(sql, migrations.RunPython.noop)
with connection.schema_editor(collect_sql=True) as editor:
operation.database_forwards('test_runsql', editor, project_state, new_state)
collected_sql = '\n'.join(editor.collected_sql)
self.assertEqual(collected_sql.count(';'), 1)
def test_run_python(self):
"""
Tests the RunPython operation
"""
project_state = self.set_up_test_model("test_runpython", mti_model=True)
# Create the operation
def inner_method(models, schema_editor):
Pony = models.get_model("test_runpython", "Pony")
Pony.objects.create(pink=1, weight=3.55)
Pony.objects.create(weight=5)
def inner_method_reverse(models, schema_editor):
Pony = models.get_model("test_runpython", "Pony")
Pony.objects.filter(pink=1, weight=3.55).delete()
Pony.objects.filter(weight=5).delete()
operation = migrations.RunPython(inner_method, reverse_code=inner_method_reverse)
self.assertEqual(operation.describe(), "Raw Python operation")
# Test the state alteration does nothing
new_state = project_state.clone()
operation.state_forwards("test_runpython", new_state)
self.assertEqual(new_state, project_state)
# Test the database alteration
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 0)
with connection.schema_editor() as editor:
operation.database_forwards("test_runpython", editor, project_state, new_state)
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 2)
# Now test reversal
self.assertTrue(operation.reversible)
with connection.schema_editor() as editor:
operation.database_backwards("test_runpython", editor, project_state, new_state)
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 0)
# Now test we can't use a string
with self.assertRaisesMessage(ValueError, 'RunPython must be supplied with a callable'):
migrations.RunPython("print 'ahahaha'")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RunPython")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["code", "reverse_code"])
# Also test reversal fails, with an operation identical to above but without reverse_code set
no_reverse_operation = migrations.RunPython(inner_method)
self.assertFalse(no_reverse_operation.reversible)
with connection.schema_editor() as editor:
no_reverse_operation.database_forwards("test_runpython", editor, project_state, new_state)
with self.assertRaises(NotImplementedError):
no_reverse_operation.database_backwards("test_runpython", editor, new_state, project_state)
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 2)
def create_ponies(models, schema_editor):
Pony = models.get_model("test_runpython", "Pony")
pony1 = Pony.objects.create(pink=1, weight=3.55)
self.assertIsNot(pony1.pk, None)
pony2 = Pony.objects.create(weight=5)
self.assertIsNot(pony2.pk, None)
self.assertNotEqual(pony1.pk, pony2.pk)
operation = migrations.RunPython(create_ponies)
with connection.schema_editor() as editor:
operation.database_forwards("test_runpython", editor, project_state, new_state)
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 4)
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "RunPython")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["code"])
def create_shetlandponies(models, schema_editor):
ShetlandPony = models.get_model("test_runpython", "ShetlandPony")
pony1 = ShetlandPony.objects.create(weight=4.0)
self.assertIsNot(pony1.pk, None)
pony2 = ShetlandPony.objects.create(weight=5.0)
self.assertIsNot(pony2.pk, None)
self.assertNotEqual(pony1.pk, pony2.pk)
operation = migrations.RunPython(create_shetlandponies)
with connection.schema_editor() as editor:
operation.database_forwards("test_runpython", editor, project_state, new_state)
self.assertEqual(project_state.apps.get_model("test_runpython", "Pony").objects.count(), 6)
self.assertEqual(project_state.apps.get_model("test_runpython", "ShetlandPony").objects.count(), 2)
# And elidable reduction
self.assertIs(False, operation.reduce(operation, []))
elidable_operation = migrations.RunPython(inner_method, elidable=True)
self.assertEqual(elidable_operation.reduce(operation, []), [operation])
def test_run_python_atomic(self):
"""
Tests the RunPython operation correctly handles the "atomic" keyword
"""
project_state = self.set_up_test_model("test_runpythonatomic", mti_model=True)
def inner_method(models, schema_editor):
Pony = models.get_model("test_runpythonatomic", "Pony")
Pony.objects.create(pink=1, weight=3.55)
raise ValueError("Adrian hates ponies.")
# Verify atomicity when applying.
atomic_migration = Migration("test", "test_runpythonatomic")
atomic_migration.operations = [migrations.RunPython(inner_method, reverse_code=inner_method)]
non_atomic_migration = Migration("test", "test_runpythonatomic")
non_atomic_migration.operations = [migrations.RunPython(inner_method, reverse_code=inner_method, atomic=False)]
# If we're a fully-transactional database, both versions should rollback
if connection.features.can_rollback_ddl:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
# Otherwise, the non-atomic operation should leave a row there
else:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 1)
# Reset object count to zero and verify atomicity when unapplying.
project_state.apps.get_model("test_runpythonatomic", "Pony").objects.all().delete()
# On a fully-transactional database, both versions rollback.
if connection.features.can_rollback_ddl:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.unapply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.unapply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
# Otherwise, the non-atomic operation leaves a row there.
else:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.unapply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.unapply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 1)
# Verify deconstruction.
definition = non_atomic_migration.operations[0].deconstruct()
self.assertEqual(definition[0], "RunPython")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["atomic", "code", "reverse_code"])
def test_run_python_related_assignment(self):
"""
#24282 - Model changes to a FK reverse side update the model
on the FK side as well.
"""
def inner_method(models, schema_editor):
Author = models.get_model("test_authors", "Author")
Book = models.get_model("test_books", "Book")
author = Author.objects.create(name="Hemingway")
Book.objects.create(title="Old Man and The Sea", author=author)
create_author = migrations.CreateModel(
"Author",
[
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=100)),
],
options={},
)
create_book = migrations.CreateModel(
"Book",
[
("id", models.AutoField(primary_key=True)),
("title", models.CharField(max_length=100)),
("author", models.ForeignKey("test_authors.Author", models.CASCADE))
],
options={},
)
add_hometown = migrations.AddField(
"Author",
"hometown",
models.CharField(max_length=100),
)
create_old_man = migrations.RunPython(inner_method, inner_method)
project_state = ProjectState()
new_state = project_state.clone()
with connection.schema_editor() as editor:
create_author.state_forwards("test_authors", new_state)
create_author.database_forwards("test_authors", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
create_book.state_forwards("test_books", new_state)
create_book.database_forwards("test_books", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
add_hometown.state_forwards("test_authors", new_state)
add_hometown.database_forwards("test_authors", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
create_old_man.state_forwards("test_books", new_state)
create_old_man.database_forwards("test_books", editor, project_state, new_state)
def test_model_with_bigautofield(self):
"""
A model with BigAutoField can be created.
"""
def create_data(models, schema_editor):
Author = models.get_model("test_author", "Author")
Book = models.get_model("test_book", "Book")
author1 = Author.objects.create(name="Hemingway")
Book.objects.create(title="Old Man and The Sea", author=author1)
Book.objects.create(id=2 ** 33, title="A farewell to arms", author=author1)
author2 = Author.objects.create(id=2 ** 33, name="Remarque")
Book.objects.create(title="All quiet on the western front", author=author2)
Book.objects.create(title="Arc de Triomphe", author=author2)
create_author = migrations.CreateModel(
"Author",
[
("id", models.BigAutoField(primary_key=True)),
("name", models.CharField(max_length=100)),
],
options={},
)
create_book = migrations.CreateModel(
"Book",
[
("id", models.BigAutoField(primary_key=True)),
("title", models.CharField(max_length=100)),
("author", models.ForeignKey(to="test_author.Author", on_delete=models.CASCADE))
],
options={},
)
fill_data = migrations.RunPython(create_data)
project_state = ProjectState()
new_state = project_state.clone()
with connection.schema_editor() as editor:
create_author.state_forwards("test_author", new_state)
create_author.database_forwards("test_author", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
create_book.state_forwards("test_book", new_state)
create_book.database_forwards("test_book", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
fill_data.state_forwards("fill_data", new_state)
fill_data.database_forwards("fill_data", editor, project_state, new_state)
def _test_autofield_foreignfield_growth(self, source_field, target_field, target_value):
"""
A field may be migrated in the following ways:
- AutoField to BigAutoField
- SmallAutoField to AutoField
- SmallAutoField to BigAutoField
"""
def create_initial_data(models, schema_editor):
Article = models.get_model("test_article", "Article")
Blog = models.get_model("test_blog", "Blog")
blog = Blog.objects.create(name="web development done right")
Article.objects.create(name="Frameworks", blog=blog)
Article.objects.create(name="Programming Languages", blog=blog)
def create_big_data(models, schema_editor):
Article = models.get_model("test_article", "Article")
Blog = models.get_model("test_blog", "Blog")
blog2 = Blog.objects.create(name="Frameworks", id=target_value)
Article.objects.create(name="Django", blog=blog2)
Article.objects.create(id=target_value, name="Django2", blog=blog2)
create_blog = migrations.CreateModel(
"Blog",
[
("id", source_field(primary_key=True)),
("name", models.CharField(max_length=100)),
],
options={},
)
create_article = migrations.CreateModel(
"Article",
[
("id", source_field(primary_key=True)),
("blog", models.ForeignKey(to="test_blog.Blog", on_delete=models.CASCADE)),
("name", models.CharField(max_length=100)),
("data", models.TextField(default="")),
],
options={},
)
fill_initial_data = migrations.RunPython(create_initial_data, create_initial_data)
fill_big_data = migrations.RunPython(create_big_data, create_big_data)
grow_article_id = migrations.AlterField('Article', 'id', target_field(primary_key=True))
grow_blog_id = migrations.AlterField('Blog', 'id', target_field(primary_key=True))
project_state = ProjectState()
new_state = project_state.clone()
with connection.schema_editor() as editor:
create_blog.state_forwards("test_blog", new_state)
create_blog.database_forwards("test_blog", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
create_article.state_forwards("test_article", new_state)
create_article.database_forwards("test_article", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
fill_initial_data.state_forwards("fill_initial_data", new_state)
fill_initial_data.database_forwards("fill_initial_data", editor, project_state, new_state)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
grow_article_id.state_forwards("test_article", new_state)
grow_article_id.database_forwards("test_article", editor, project_state, new_state)
state = new_state.clone()
article = state.apps.get_model("test_article.Article")
self.assertIsInstance(article._meta.pk, target_field)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
grow_blog_id.state_forwards("test_blog", new_state)
grow_blog_id.database_forwards("test_blog", editor, project_state, new_state)
state = new_state.clone()
blog = state.apps.get_model("test_blog.Blog")
self.assertIsInstance(blog._meta.pk, target_field)
project_state = new_state
new_state = new_state.clone()
with connection.schema_editor() as editor:
fill_big_data.state_forwards("fill_big_data", new_state)
fill_big_data.database_forwards("fill_big_data", editor, project_state, new_state)
def test_autofield__bigautofield_foreignfield_growth(self):
"""A field may be migrated from AutoField to BigAutoField."""
self._test_autofield_foreignfield_growth(
models.AutoField,
models.BigAutoField,
2 ** 33,
)
def test_smallfield_autofield_foreignfield_growth(self):
"""A field may be migrated from SmallAutoField to AutoField."""
self._test_autofield_foreignfield_growth(
models.SmallAutoField,
models.AutoField,
2 ** 22,
)
def test_smallfield_bigautofield_foreignfield_growth(self):
"""A field may be migrated from SmallAutoField to BigAutoField."""
self._test_autofield_foreignfield_growth(
models.SmallAutoField,
models.BigAutoField,
2 ** 33,
)
def test_run_python_noop(self):
"""
#24098 - Tests no-op RunPython operations.
"""
project_state = ProjectState()
new_state = project_state.clone()
operation = migrations.RunPython(migrations.RunPython.noop, migrations.RunPython.noop)
with connection.schema_editor() as editor:
operation.database_forwards("test_runpython", editor, project_state, new_state)
operation.database_backwards("test_runpython", editor, new_state, project_state)
def test_separate_database_and_state(self):
"""
Tests the SeparateDatabaseAndState operation.
"""
project_state = self.set_up_test_model("test_separatedatabaseandstate")
# Create the operation
database_operation = migrations.RunSQL(
"CREATE TABLE i_love_ponies (id int, special_thing int);",
"DROP TABLE i_love_ponies;"
)
state_operation = migrations.CreateModel("SomethingElse", [("id", models.AutoField(primary_key=True))])
operation = migrations.SeparateDatabaseAndState(
state_operations=[state_operation],
database_operations=[database_operation]
)
self.assertEqual(operation.describe(), "Custom state/database change combination")
# Test the state alteration
new_state = project_state.clone()
operation.state_forwards("test_separatedatabaseandstate", new_state)
self.assertEqual(len(new_state.models["test_separatedatabaseandstate", "somethingelse"].fields), 1)
# Make sure there's no table
self.assertTableNotExists("i_love_ponies")
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_separatedatabaseandstate", editor, project_state, new_state)
self.assertTableExists("i_love_ponies")
# And test reversal
self.assertTrue(operation.reversible)
with connection.schema_editor() as editor:
operation.database_backwards("test_separatedatabaseandstate", editor, new_state, project_state)
self.assertTableNotExists("i_love_ponies")
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "SeparateDatabaseAndState")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["database_operations", "state_operations"])
def test_separate_database_and_state2(self):
"""
A complex SeparateDatabaseAndState operation: Multiple operations both
for state and database. Verify the state dependencies within each list
and that state ops don't affect the database.
"""
app_label = "test_separatedatabaseandstate2"
project_state = self.set_up_test_model(app_label)
# Create the operation
database_operations = [
migrations.CreateModel(
"ILovePonies",
[("id", models.AutoField(primary_key=True))],
options={"db_table": "iloveponies"},
),
migrations.CreateModel(
"ILoveMorePonies",
# We use IntegerField and not AutoField because
# the model is going to be deleted immediately
# and with an AutoField this fails on Oracle
[("id", models.IntegerField(primary_key=True))],
options={"db_table": "ilovemoreponies"},
),
migrations.DeleteModel("ILoveMorePonies"),
migrations.CreateModel(
"ILoveEvenMorePonies",
[("id", models.AutoField(primary_key=True))],
options={"db_table": "iloveevenmoreponies"},
),
]
state_operations = [
migrations.CreateModel(
"SomethingElse",
[("id", models.AutoField(primary_key=True))],
options={"db_table": "somethingelse"},
),
migrations.DeleteModel("SomethingElse"),
migrations.CreateModel(
"SomethingCompletelyDifferent",
[("id", models.AutoField(primary_key=True))],
options={"db_table": "somethingcompletelydifferent"},
),
]
operation = migrations.SeparateDatabaseAndState(
state_operations=state_operations,
database_operations=database_operations,
)
# Test the state alteration
new_state = project_state.clone()
operation.state_forwards(app_label, new_state)
def assertModelsAndTables(after_db):
# Tables and models exist, or don't, as they should:
self.assertNotIn((app_label, "somethingelse"), new_state.models)
self.assertEqual(len(new_state.models[app_label, "somethingcompletelydifferent"].fields), 1)
self.assertNotIn((app_label, "iloveponiesonies"), new_state.models)
self.assertNotIn((app_label, "ilovemoreponies"), new_state.models)
self.assertNotIn((app_label, "iloveevenmoreponies"), new_state.models)
self.assertTableNotExists("somethingelse")
self.assertTableNotExists("somethingcompletelydifferent")
self.assertTableNotExists("ilovemoreponies")
if after_db:
self.assertTableExists("iloveponies")
self.assertTableExists("iloveevenmoreponies")
else:
self.assertTableNotExists("iloveponies")
self.assertTableNotExists("iloveevenmoreponies")
assertModelsAndTables(after_db=False)
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards(app_label, editor, project_state, new_state)
assertModelsAndTables(after_db=True)
# And test reversal
self.assertTrue(operation.reversible)
with connection.schema_editor() as editor:
operation.database_backwards(app_label, editor, new_state, project_state)
assertModelsAndTables(after_db=False)
class SwappableOperationTests(OperationTestBase):
"""
Key operations ignore swappable models
(we don't want to replicate all of them here, as the functionality
is in a common base class anyway)
"""
available_apps = ['migrations']
@override_settings(TEST_SWAP_MODEL="migrations.SomeFakeModel")
def test_create_ignore_swapped(self):
"""
The CreateTable operation ignores swapped models.
"""
operation = migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.IntegerField(default=1)),
],
options={
"swappable": "TEST_SWAP_MODEL",
},
)
# Test the state alteration (it should still be there!)
project_state = ProjectState()
new_state = project_state.clone()
operation.state_forwards("test_crigsw", new_state)
self.assertEqual(new_state.models["test_crigsw", "pony"].name, "Pony")
self.assertEqual(len(new_state.models["test_crigsw", "pony"].fields), 2)
# Test the database alteration
self.assertTableNotExists("test_crigsw_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_crigsw", editor, project_state, new_state)
self.assertTableNotExists("test_crigsw_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_crigsw", editor, new_state, project_state)
self.assertTableNotExists("test_crigsw_pony")
@override_settings(TEST_SWAP_MODEL="migrations.SomeFakeModel")
def test_delete_ignore_swapped(self):
"""
Tests the DeleteModel operation ignores swapped models.
"""
operation = migrations.DeleteModel("Pony")
project_state, new_state = self.make_test_state("test_dligsw", operation)
# Test the database alteration
self.assertTableNotExists("test_dligsw_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_dligsw", editor, project_state, new_state)
self.assertTableNotExists("test_dligsw_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_dligsw", editor, new_state, project_state)
self.assertTableNotExists("test_dligsw_pony")
@override_settings(TEST_SWAP_MODEL="migrations.SomeFakeModel")
def test_add_field_ignore_swapped(self):
"""
Tests the AddField operation.
"""
# Test the state alteration
operation = migrations.AddField(
"Pony",
"height",
models.FloatField(null=True, default=5),
)
project_state, new_state = self.make_test_state("test_adfligsw", operation)
# Test the database alteration
self.assertTableNotExists("test_adfligsw_pony")
with connection.schema_editor() as editor:
operation.database_forwards("test_adfligsw", editor, project_state, new_state)
self.assertTableNotExists("test_adfligsw_pony")
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_adfligsw", editor, new_state, project_state)
self.assertTableNotExists("test_adfligsw_pony")
@override_settings(TEST_SWAP_MODEL='migrations.SomeFakeModel')
def test_indexes_ignore_swapped(self):
"""
Add/RemoveIndex operations ignore swapped models.
"""
operation = migrations.AddIndex('Pony', models.Index(fields=['pink'], name='my_name_idx'))
project_state, new_state = self.make_test_state('test_adinigsw', operation)
with connection.schema_editor() as editor:
# No database queries should be run for swapped models
operation.database_forwards('test_adinigsw', editor, project_state, new_state)
operation.database_backwards('test_adinigsw', editor, new_state, project_state)
operation = migrations.RemoveIndex('Pony', models.Index(fields=['pink'], name='my_name_idx'))
project_state, new_state = self.make_test_state("test_rminigsw", operation)
with connection.schema_editor() as editor:
operation.database_forwards('test_rminigsw', editor, project_state, new_state)
operation.database_backwards('test_rminigsw', editor, new_state, project_state)
class TestCreateModel(SimpleTestCase):
def test_references_model_mixin(self):
migrations.CreateModel(
'name',
fields=[],
bases=(Mixin, models.Model),
).references_model('other_model', 'migrations')
class FieldOperationTests(SimpleTestCase):
def test_references_model(self):
operation = FieldOperation('MoDel', 'field', models.ForeignKey('Other', models.CASCADE))
# Model name match.
self.assertIs(operation.references_model('mOdEl', 'migrations'), True)
# Referenced field.
self.assertIs(operation.references_model('oTher', 'migrations'), True)
# Doesn't reference.
self.assertIs(operation.references_model('Whatever', 'migrations'), False)
def test_references_field_by_name(self):
operation = FieldOperation('MoDel', 'field', models.BooleanField(default=False))
self.assertIs(operation.references_field('model', 'field', 'migrations'), True)
def test_references_field_by_remote_field_model(self):
operation = FieldOperation('Model', 'field', models.ForeignKey('Other', models.CASCADE))
self.assertIs(operation.references_field('Other', 'whatever', 'migrations'), True)
self.assertIs(operation.references_field('Missing', 'whatever', 'migrations'), False)
def test_references_field_by_from_fields(self):
operation = FieldOperation(
'Model', 'field', models.fields.related.ForeignObject('Other', models.CASCADE, ['from'], ['to'])
)
self.assertIs(operation.references_field('Model', 'from', 'migrations'), True)
self.assertIs(operation.references_field('Model', 'to', 'migrations'), False)
self.assertIs(operation.references_field('Other', 'from', 'migrations'), False)
self.assertIs(operation.references_field('Model', 'to', 'migrations'), False)
def test_references_field_by_to_fields(self):
operation = FieldOperation('Model', 'field', models.ForeignKey('Other', models.CASCADE, to_field='field'))
self.assertIs(operation.references_field('Other', 'field', 'migrations'), True)
self.assertIs(operation.references_field('Other', 'whatever', 'migrations'), False)
self.assertIs(operation.references_field('Missing', 'whatever', 'migrations'), False)
def test_references_field_by_through(self):
operation = FieldOperation('Model', 'field', models.ManyToManyField('Other', through='Through'))
self.assertIs(operation.references_field('Other', 'whatever', 'migrations'), True)
self.assertIs(operation.references_field('Through', 'whatever', 'migrations'), True)
self.assertIs(operation.references_field('Missing', 'whatever', 'migrations'), False)
def test_reference_field_by_through_fields(self):
operation = FieldOperation(
'Model', 'field', models.ManyToManyField('Other', through='Through', through_fields=('first', 'second'))
)
self.assertIs(operation.references_field('Other', 'whatever', 'migrations'), True)
self.assertIs(operation.references_field('Through', 'whatever', 'migrations'), False)
self.assertIs(operation.references_field('Through', 'first', 'migrations'), True)
self.assertIs(operation.references_field('Through', 'second', 'migrations'), True)
|
61d364a61362730e50335f5a83c6c1fcbb45917804f19f469272371d600db39f | import functools
import re
from unittest import mock
from django.apps import apps
from django.conf import settings
from django.contrib.auth.models import AbstractBaseUser
from django.core.validators import RegexValidator, validate_slug
from django.db import connection, migrations, models
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.graph import MigrationGraph
from django.db.migrations.loader import MigrationLoader
from django.db.migrations.questioner import MigrationQuestioner
from django.db.migrations.state import ModelState, ProjectState
from django.test import SimpleTestCase, TestCase, override_settings
from django.test.utils import isolate_lru_cache
from .models import FoodManager, FoodQuerySet
class DeconstructibleObject:
"""
A custom deconstructible object.
"""
def __init__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
def deconstruct(self):
return (
self.__module__ + '.' + self.__class__.__name__,
self.args,
self.kwargs
)
class AutodetectorTests(TestCase):
"""
Tests the migration autodetector.
"""
author_empty = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_name = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
author_name_null = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, null=True)),
])
author_name_longer = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=400)),
])
author_name_renamed = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("names", models.CharField(max_length=200)),
])
author_name_default = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default='Ada Lovelace')),
])
author_name_check_constraint = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
],
{'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]},
)
author_dates_of_birth_auto_now = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now=True)),
("date_time_of_birth", models.DateTimeField(auto_now=True)),
("time_of_birth", models.TimeField(auto_now=True)),
])
author_dates_of_birth_auto_now_add = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now_add=True)),
("date_time_of_birth", models.DateTimeField(auto_now_add=True)),
("time_of_birth", models.TimeField(auto_now_add=True)),
])
author_name_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_4 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_list_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 999])),
])
author_name_deconstructible_tuple_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 999))),
])
author_name_deconstructible_dict_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 999
})),
])
author_name_nested_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2-changed'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_extra_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
None,
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c-changed')),
))),
])
author_name_nested_deconstructible_extra_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
c=None,
))),
])
author_custom_pk = ModelState("testapp", "Author", [("pk_field", models.IntegerField(primary_key=True))])
author_with_biography_non_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField()),
("biography", models.TextField()),
])
author_with_biography_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(blank=True)),
("biography", models.TextField(blank=True)),
])
author_with_book = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_book_order_wrt = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
], options={"order_with_respect_to": "book"})
author_renamed_with_book = ModelState("testapp", "Writer", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_publisher_string = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher_name", models.CharField(max_length=200)),
])
author_with_publisher = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
author_with_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("auth.User", models.CASCADE)),
])
author_with_custom_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("thirdapp.CustomUser", models.CASCADE)),
])
author_proxy = ModelState("testapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_options = ModelState("testapp", "AuthorProxy", [], {
"proxy": True,
"verbose_name": "Super Author",
}, ("testapp.author",))
author_proxy_notproxy = ModelState("testapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_third = ModelState("thirdapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_third_notproxy = ModelState("thirdapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_proxy = ModelState("testapp", "AAuthorProxyProxy", [], {"proxy": True}, ("testapp.authorproxy",))
author_unmanaged = ModelState("testapp", "AuthorUnmanaged", [], {"managed": False}, ("testapp.author",))
author_unmanaged_managed = ModelState("testapp", "AuthorUnmanaged", [], {}, ("testapp.author",))
author_unmanaged_default_pk = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_unmanaged_custom_pk = ModelState("testapp", "Author", [
("pk_field", models.IntegerField(primary_key=True)),
])
author_with_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher")),
])
author_with_m2m_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", blank=True)),
])
author_with_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Contract")),
])
author_with_renamed_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Deal")),
])
author_with_former_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.CharField(max_length=100)),
])
author_with_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
author_with_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_with_new_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_two"})
author_renamed_with_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_renamed_with_new_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_three"})
contract = ModelState("testapp", "Contract", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
contract_renamed = ModelState("testapp", "Deal", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
publisher = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=100)),
])
publisher_with_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_aardvark_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Aardvark", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_book = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Book", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
other_pony = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
])
other_pony_food = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
], managers=[
('food_qs', FoodQuerySet.as_manager()),
('food_mgr', FoodManager('a', 'b')),
('food_mgr_kwargs', FoodManager('x', 'y', 3, 4)),
])
other_stable = ModelState("otherapp", "Stable", [("id", models.AutoField(primary_key=True))])
third_thing = ModelState("thirdapp", "Thing", [("id", models.AutoField(primary_key=True))])
book = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("thirdapp.AuthorProxy", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.AAuthorProxyProxy", models.CASCADE)),
])
book_migrations_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("migrations.UnmigratedModel", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_no_author_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.IntegerField()),
("title", models.CharField(max_length=200)),
])
book_with_no_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("title", models.CharField(max_length=200)),
])
book_with_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_field_and_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("writer", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author")),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors_through_attribution = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author", through="otherapp.Attribution")),
("title", models.CharField(max_length=200)),
])
book_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["author", "title"], name="book_title_author_idx")],
})
book_unordered_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["title", "author"], name="book_author_title_idx")],
})
book_foo_together = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("author", "title")},
"unique_together": {("author", "title")},
})
book_foo_together_2 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
book_foo_together_3 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield")},
"unique_together": {("title", "newfield")},
})
book_foo_together_4 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield2", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield2")},
"unique_together": {("title", "newfield2")},
})
attribution = ModelState("otherapp", "Attribution", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
edition = ModelState("thirdapp", "Edition", [
("id", models.AutoField(primary_key=True)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
custom_user = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
], bases=(AbstractBaseUser,))
custom_user_no_inherit = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
])
aardvark = ModelState("thirdapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_testapp = ModelState("testapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_based_on_author = ModelState("testapp", "Aardvark", [], bases=("testapp.Author",))
aardvark_pk_fk_author = ModelState("testapp", "Aardvark", [
("id", models.OneToOneField("testapp.Author", models.CASCADE, primary_key=True)),
])
knight = ModelState("eggs", "Knight", [("id", models.AutoField(primary_key=True))])
rabbit = ModelState("eggs", "Rabbit", [
("id", models.AutoField(primary_key=True)),
("knight", models.ForeignKey("eggs.Knight", models.CASCADE)),
("parent", models.ForeignKey("eggs.Rabbit", models.CASCADE)),
], {
"unique_together": {("parent", "knight")},
"indexes": [models.Index(fields=["parent", "knight"], name='rabbit_circular_fk_index')],
})
def repr_changes(self, changes, include_dependencies=False):
output = ""
for app_label, migrations_ in sorted(changes.items()):
output += " %s:\n" % app_label
for migration in migrations_:
output += " %s\n" % migration.name
for operation in migration.operations:
output += " %s\n" % operation
if include_dependencies:
output += " Dependencies:\n"
if migration.dependencies:
for dep in migration.dependencies:
output += " %s\n" % (dep,)
else:
output += " None\n"
return output
def assertNumberMigrations(self, changes, app_label, number):
if len(changes.get(app_label, [])) != number:
self.fail("Incorrect number of migrations (%s) for %s (expected %s)\n%s" % (
len(changes.get(app_label, [])),
app_label,
number,
self.repr_changes(changes),
))
def assertMigrationDependencies(self, changes, app_label, position, dependencies):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if set(migration.dependencies) != set(dependencies):
self.fail("Migration dependencies mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
dependencies,
self.repr_changes(changes, include_dependencies=True),
))
def assertOperationTypes(self, changes, app_label, position, types):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
real_types = [operation.__class__.__name__ for operation in migration.operations]
if types != real_types:
self.fail("Operation type mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
types,
self.repr_changes(changes),
))
def assertOperationAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
for attr, value in attrs.items():
if getattr(operation, attr, None) != value:
self.fail("Attribute mismatch for %s.%s op #%s, %s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(operation, attr, None),
self.repr_changes(changes),
))
def assertOperationFieldAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
if not hasattr(operation, 'field'):
self.fail("No field attribute for %s.%s op #%s." % (
app_label,
migration.name,
operation_position,
))
field = operation.field
for attr, value in attrs.items():
if getattr(field, attr, None) != value:
self.fail("Field attribute mismatch for %s.%s op #%s, field.%s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(field, attr, None),
self.repr_changes(changes),
))
def make_project_state(self, model_states):
"Shortcut to make ProjectStates from lists of predefined models"
project_state = ProjectState()
for model_state in model_states:
project_state.add_model(model_state.clone())
return project_state
def get_changes(self, before_states, after_states, questioner=None):
if not isinstance(before_states, ProjectState):
before_states = self.make_project_state(before_states)
if not isinstance(after_states, ProjectState):
after_states = self.make_project_state(after_states)
return MigrationAutodetector(
before_states,
after_states,
questioner,
)._detect_changes()
def test_arrange_for_graph(self):
"""Tests auto-naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("otherapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([self.publisher, self.other_pony])
after = self.make_project_state([
self.author_empty, self.publisher, self.other_pony, self.other_stable,
])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
changes = autodetector.arrange_for_graph(changes, graph)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_author")
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, '0002_stable')
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_arrange_for_graph_with_multiple_initial(self):
# Make a fake graph.
graph = MigrationGraph()
# Use project state to make a new migration change set.
before = self.make_project_state([])
after = self.make_project_state([self.author_with_book, self.book, self.attribution])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({'ask_initial': True}))
changes = autodetector._detect_changes()
changes = autodetector.arrange_for_graph(changes, graph)
self.assertEqual(changes['otherapp'][0].name, '0001_initial')
self.assertEqual(changes['otherapp'][0].dependencies, [])
self.assertEqual(changes['otherapp'][1].name, '0002_initial')
self.assertCountEqual(
changes['otherapp'][1].dependencies,
[('testapp', '0001_initial'), ('otherapp', '0001_initial')],
)
self.assertEqual(changes['testapp'][0].name, '0001_initial')
self.assertEqual(changes['testapp'][0].dependencies, [('otherapp', '0001_initial')])
def test_trim_apps(self):
"""
Trim does not remove dependencies but does remove unwanted apps.
"""
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable, self.third_thing])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({"ask_initial": True}))
changes = autodetector._detect_changes()
# Run through arrange_for_graph
graph = MigrationGraph()
changes = autodetector.arrange_for_graph(changes, graph)
changes["testapp"][0].dependencies.append(("otherapp", "0001_initial"))
changes = autodetector._trim_to_apps(changes, {"testapp"})
# Make sure there's the right set of migrations
self.assertEqual(changes["testapp"][0].name, "0001_initial")
self.assertEqual(changes["otherapp"][0].name, "0001_initial")
self.assertNotIn("thirdapp", changes)
def test_custom_migration_name(self):
"""Tests custom naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
migration_name = 'custom_name'
changes = autodetector.arrange_for_graph(changes, graph, migration_name)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_%s" % migration_name)
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, "0002_%s" % migration_name)
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_new_model(self):
"""Tests autodetection of new models."""
changes = self.get_changes([], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="Pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
def test_old_model(self):
"""Tests deletion of old models."""
changes = self.get_changes([self.author_empty], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
def test_add_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_empty], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_not_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_add_not_asking_for_null_addition(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_auto_now_add_addition')
def test_add_date_fields_with_auto_now_add_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
self.assertEqual(mocked_ask_method.call_count, 3)
def test_remove_field(self):
"""Tests autodetection of removed fields."""
changes = self.get_changes([self.author_name], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
def test_alter_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_name], [self.author_name_longer])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
def test_supports_functools_partial(self):
def _content_file_name(instance, filename, key, **kwargs):
return '{}/{}'.format(instance, filename)
def content_file_name(key, **kwargs):
return functools.partial(_content_file_name, key, **kwargs)
# An unchanged partial reference.
before = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
after = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'testapp', 0)
# A changed partial reference.
args_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('other-file'))),
])]
changes = self.get_changes(before, args_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
# Can't use assertOperationFieldAttributes because we need the
# deconstructed version, i.e., the exploded func/args/keywords rather
# than the partial: we don't care if it's not the same instance of the
# partial, only if it's the same source function, args, and keywords.
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('other-file',), {}),
(value.func, value.args, value.keywords)
)
kwargs_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file', spam='eggs'))),
])]
changes = self.get_changes(before, kwargs_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('file',), {'spam': 'eggs'}),
(value.func, value.args, value.keywords)
)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_alter_field_to_not_null_with_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default='Ada Lovelace')
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value=models.NOT_PROVIDED,
)
def test_alter_field_to_not_null_without_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default=models.NOT_PROVIDED)
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value='Some Name',
)
def test_alter_field_to_not_null_oneoff_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=False)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default="Some Name")
def test_rename_field(self):
"""Tests autodetection of renamed fields."""
changes = self.get_changes(
[self.author_name], [self.author_name_renamed], MigrationQuestioner({"ask_rename": True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="name", new_name="names")
def test_rename_field_foreign_key_to_field(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='field')),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='renamed_field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='field', new_name='renamed_field')
def test_rename_foreign_object_fields(self):
fields = ('first', 'second')
renamed_fields = ('first_renamed', 'second_renamed')
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=fields,
)),
]),
]
# Case 1: to_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
], options={'unique_together': {renamed_fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=renamed_fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField', 'AlterUniqueTogether'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='second', new_name='second_renamed',
)
# Case 2: from_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=renamed_fields, to_fields=fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='second', new_name='second_renamed',
)
def test_rename_referenced_primary_key(self):
before = [
ModelState('app', 'Foo', [
('id', models.CharField(primary_key=True, serialize=False)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('renamed_id', models.CharField(primary_key=True, serialize=False))
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='id', new_name='renamed_id')
def test_rename_field_preserved_db_column(self):
"""
RenameField is used if a field is renamed and db_column equal to the
old field's column is added.
"""
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField()),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(db_column='field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', name='field',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'field', 'django.db.models.IntegerField', [], {'db_column': 'field'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='field',
new_name='renamed_field',
)
def test_rename_related_field_preserved_db_column(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('renamed_foo', models.ForeignKey('app.Foo', models.CASCADE, db_column='foo_id')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', name='foo',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'foo',
'django.db.models.ForeignKey',
[],
{'to': 'app.foo', 'on_delete': models.CASCADE, 'db_column': 'foo_id'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='foo',
new_name='renamed_foo',
)
def test_rename_model(self):
"""Tests autodetection of renamed models."""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_author_renamed],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Now that RenameModel handles related fields too, there should be
# no AlterField for the related field.
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_model_case(self):
"""
Model name is case-insensitive. Changing case doesn't lead to any
autodetected operations.
"""
author_renamed = ModelState('testapp', 'author', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes(
[self.author_empty, self.book],
[author_renamed, self.book],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_renamed_referenced_m2m_model_case(self):
publisher_renamed = ModelState('testapp', 'publisher', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=100)),
])
changes = self.get_changes(
[self.publisher, self.author_with_m2m],
[publisher_renamed, self.author_with_m2m],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_m2m_through_model(self):
"""
Tests autodetection of renamed models that are used in M2M relations as
through models.
"""
changes = self.get_changes(
[self.author_with_m2m_through, self.publisher, self.contract],
[self.author_with_renamed_m2m_through, self.publisher, self.contract_renamed],
MigrationQuestioner({'ask_rename_model': True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='Contract', new_name='Deal')
def test_rename_model_with_renamed_rel_field(self):
"""
Tests autodetection of renamed models while simultaneously renaming one
of the fields that relate to the renamed model.
"""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_field_and_author_renamed],
MigrationQuestioner({"ask_rename": True, "ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Right number/type of migrations for related field rename?
# Alter is already taken care of.
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, old_name="author", new_name="writer")
def test_rename_model_with_fks_in_different_position(self):
"""
#24537 - The order of fields in a model does not influence
the RenameModel detection.
"""
before = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "EntityB", [
("id", models.AutoField(primary_key=True)),
("some_label", models.CharField(max_length=255)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
]),
]
after = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "RenamedEntityB", [
("id", models.AutoField(primary_key=True)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
("some_label", models.CharField(max_length=255)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({"ask_rename_model": True}))
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="EntityB", new_name="RenamedEntityB")
def test_rename_model_reverse_relation_dependencies(self):
"""
The migration to rename a model pointed to by a foreign key in another
app must run after the other app's migration that adds the foreign key
with model's original name. Therefore, the renaming migration has a
dependency on that other migration.
"""
before = [
ModelState('testapp', 'EntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.EntityA', models.CASCADE)),
]),
]
after = [
ModelState('testapp', 'RenamedEntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.RenamedEntityA', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename_model': True}))
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertMigrationDependencies(changes, 'testapp', 0, [('otherapp', '__first__')])
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='EntityA', new_name='RenamedEntityA')
def test_fk_dependency(self):
"""Having a ForeignKey automatically adds a dependency."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (author),
# thirdapp (edition) depends on otherapp (book)
changes = self.get_changes([], [self.author_name, self.book, self.edition])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("testapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="Edition")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("otherapp", "auto_1")])
def test_proxy_fk_dependency(self):
"""FK dependencies still work on proxy models."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (authorproxy)
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("thirdapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="AuthorProxy")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("testapp", "auto_1")])
def test_same_app_no_fk_dependency(self):
"""
A migration with a FK between two models of the same app
does not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_circular_fk_dependency(self):
"""
Having a circular ForeignKey dependency automatically
resolves the situation into 2 migrations on one side and 1 on the other.
"""
changes = self.get_changes([], [self.author_with_book, self.book, self.publisher_with_book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 2)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'otherapp', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'otherapp', 0, [])
self.assertMigrationDependencies(changes, 'otherapp', 1, [("otherapp", "auto_1"), ("testapp", "auto_1")])
# both split migrations should be `initial`
self.assertTrue(changes['otherapp'][0].initial)
self.assertTrue(changes['otherapp'][1].initial)
def test_same_app_circular_fk_dependency(self):
"""
A migration with a FK between two models of the same app does
not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher_with_author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="publisher")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_same_app_circular_fk_dependency_with_unique_together_and_indexes(self):
"""
#22275 - A migration with circular FK dependency does not try
to create unique together constraint and indexes before creating all
required fields first.
"""
changes = self.get_changes([], [self.knight, self.rabbit])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'eggs', 1)
self.assertOperationTypes(
changes, 'eggs', 0, ["CreateModel", "CreateModel", "AddIndex", "AlterUniqueTogether"]
)
self.assertNotIn("unique_together", changes['eggs'][0].operations[0].options)
self.assertNotIn("unique_together", changes['eggs'][0].operations[1].options)
self.assertMigrationDependencies(changes, 'eggs', 0, [])
def test_alter_db_table_add(self):
"""Tests detection for adding db_table in model's options."""
changes = self.get_changes([self.author_empty], [self.author_with_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_one")
def test_alter_db_table_change(self):
"""Tests detection for changing db_table in model's options'."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_new_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_two")
def test_alter_db_table_remove(self):
"""Tests detection for removing db_table in model's options."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table=None)
def test_alter_db_table_no_changes(self):
"""
Alter_db_table doesn't generate a migration if no changes have been made.
"""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_db_table_options])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_keep_db_table_with_model_change(self):
"""
Tests when model changes but db_table stays as-is, autodetector must not
create more than one operation.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
def test_alter_db_table_with_model_change(self):
"""
Tests when model and db_table changes, autodetector must create two
operations.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_new_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel", "AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="newauthor", table="author_three")
def test_identical_regex_doesnt_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[-a-zA-Z0-9_]+\\Z'),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 0)
def test_different_regex_does_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[a-z]+\\Z', 32),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterField"])
def test_empty_foo_together(self):
"""
#23452 - Empty unique/index_together shouldn't generate a migration.
"""
# Explicitly testing for not specified, since this is the case after
# a CreateModel operation w/o any definition on the original model
model_state_not_specified = ModelState("a", "model", [("id", models.AutoField(primary_key=True))])
# Explicitly testing for None, since this was the issue in #23452 after
# an AlterFooTogether operation with e.g. () as value
model_state_none = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": None,
"unique_together": None,
})
# Explicitly testing for the empty set, since we now always have sets.
# During removal (('col1', 'col2'),) --> () this becomes set([])
model_state_empty = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": set(),
"unique_together": set(),
})
def test(from_state, to_state, msg):
changes = self.get_changes([from_state], [to_state])
if changes:
ops = ', '.join(o.__class__.__name__ for o in changes['a'][0].operations)
self.fail('Created operation(s) %s from %s' % (ops, msg))
tests = (
(model_state_not_specified, model_state_not_specified, '"not specified" to "not specified"'),
(model_state_not_specified, model_state_none, '"not specified" to "None"'),
(model_state_not_specified, model_state_empty, '"not specified" to "empty"'),
(model_state_none, model_state_not_specified, '"None" to "not specified"'),
(model_state_none, model_state_none, '"None" to "None"'),
(model_state_none, model_state_empty, '"None" to "empty"'),
(model_state_empty, model_state_not_specified, '"empty" to "not specified"'),
(model_state_empty, model_state_none, '"empty" to "None"'),
(model_state_empty, model_state_empty, '"empty" to "empty"'),
)
for t in tests:
test(*t)
def test_create_model_with_indexes(self):
"""Test creation of new model with indexes already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'indexes': [models.Index(fields=['name'], name='create_model_with_indexes_idx')]})
changes = self.get_changes([], [author])
added_index = models.Index(fields=['name'], name='create_model_with_indexes_idx')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', index=added_index)
def test_add_indexes(self):
"""Test change detection of new indexes."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_indexes])
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AddIndex'])
added_index = models.Index(fields=['author', 'title'], name='book_title_author_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', index=added_index)
def test_remove_indexes(self):
"""Test change detection of removed indexes."""
changes = self.get_changes([self.author_empty, self.book_indexes], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
def test_order_fields_indexes(self):
"""Test change detection of reordering of fields in indexes."""
changes = self.get_changes(
[self.author_empty, self.book_indexes], [self.author_empty, self.book_unordered_indexes]
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
added_index = models.Index(fields=['title', 'author'], name='book_author_title_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='book', index=added_index)
def test_create_model_with_check_constraint(self):
"""Test creation of new model with constraints already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]})
changes = self.get_changes([], [author])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddConstraint'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', constraint=added_constraint)
def test_add_constraints(self):
"""Test change detection of new constraints."""
changes = self.get_changes([self.author_name], [self.author_name_check_constraint])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AddConstraint'])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', constraint=added_constraint)
def test_remove_constraints(self):
"""Test change detection of removed constraints."""
changes = self.get_changes([self.author_name_check_constraint], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RemoveConstraint'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', name='name_contains_bob')
def test_add_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together={("author", "title")})
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together={("author", "title")})
def test_remove_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book_foo_together], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
def test_foo_together_remove_fk(self):
"""Tests unique_together and field removal detection & ordering"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_with_no_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, [
"AlterUniqueTogether", "AlterIndexTogether", "RemoveField"
])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 2, model_name="book", name="author")
def test_foo_together_no_changes(self):
"""
index/unique_together doesn't generate a migration if no
changes have been made.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together]
)
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_foo_together_ordering(self):
"""
index/unique_together also triggers on ordering changes.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together_2]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('title', 'author')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('title', 'author')},
)
def test_add_field_and_foo_together(self):
"""
Added fields will be created before using them in index/unique_together.
"""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together_3])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AddField", "AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", unique_together={("title", "newfield")})
self.assertOperationAttributes(changes, "otherapp", 0, 2, name="book", index_together={("title", "newfield")})
def test_create_model_and_unique_together(self):
author = ModelState("otherapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
book_with_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
changes = self.get_changes([self.book_with_no_author], [author, book_with_author])
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 4)
# Right actions order?
self.assertOperationTypes(
changes, 'otherapp', 0,
['CreateModel', 'AddField', 'AlterUniqueTogether', 'AlterIndexTogether']
)
def test_remove_field_and_foo_together(self):
"""
Removed fields will be removed after updating index/unique_together.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3], [self.author_empty, self.book_foo_together]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
'RemoveField',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, model_name='book', name='newfield',
)
def test_alter_field_and_foo_together(self):
"""Fields are altered after deleting some index/unique_together."""
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField(db_index=True)),
], {
'unique_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200, unique=True)),
('age', models.IntegerField()),
], {
'index_together': {('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterField',
'AlterField',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, model_name='author', name='age',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 2, model_name='author', name='name',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 3, name='author', index_together={('age',)},
)
def test_partly_alter_foo_together(self):
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('name',), ('age',)},
'index_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('age',)},
'index_together': {('name',), ('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together={('age',)},
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, name='author',
index_together={('name',), ('age',)},
)
def test_rename_field_and_foo_together(self):
"""Fields are renamed before updating index/unique_together."""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3],
[self.author_empty, self.book_foo_together_4],
MigrationQuestioner({"ask_rename": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'RenameField',
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
unique_together={('title', 'newfield2')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, name='book',
index_together={('title', 'newfield2')},
)
def test_proxy(self):
"""The autodetector correctly deals with proxy models."""
# First, we test adding a proxy model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel"])
self.assertOperationAttributes(
changes, "testapp", 0, 0, name="AuthorProxy", options={"proxy": True, "indexes": [], "constraints": []}
)
# Now, we test turning a proxy model into a non-proxy model
# It should delete the proxy then make the real one
changes = self.get_changes(
[self.author_empty, self.author_proxy], [self.author_empty, self.author_proxy_notproxy]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["DeleteModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="AuthorProxy")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="AuthorProxy", options={})
def test_proxy_non_model_parent(self):
class Mixin:
pass
author_proxy_non_model_parent = ModelState(
'testapp',
'AuthorProxy',
[],
{'proxy': True},
(Mixin, 'testapp.author'),
)
changes = self.get_changes(
[self.author_empty],
[self.author_empty, author_proxy_non_model_parent],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='AuthorProxy',
options={'proxy': True, 'indexes': [], 'constraints': []},
bases=(Mixin, 'testapp.author'),
)
def test_proxy_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on proxy
models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_custom_pk, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
def test_proxy_to_mti_with_fk_to_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third, self.book_proxy_fk],
)
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
# Change AuthorProxy to use MTI.
from_state = to_state.clone()
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third_notproxy, self.book_proxy_fk],
)
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AuthorProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on thirdapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('thirdapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('thirdapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
def test_proxy_to_mti_with_fk_to_proxy_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state([
self.author_empty,
self.author_proxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[1][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
# Change AuthorProxy to use MTI. FK still points to AAuthorProxyProxy,
# a proxy of AuthorProxy.
from_state = to_state.clone()
to_state = self.make_project_state([
self.author_empty,
self.author_proxy_notproxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AAuthorProxyProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on testapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
def test_unmanaged_create(self):
"""The autodetector correctly deals with managed models."""
# First, we test adding an unmanaged model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_unmanaged])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="AuthorUnmanaged", options={"managed": False})
def test_unmanaged_delete(self):
changes = self.get_changes([self.author_empty, self.author_unmanaged], [self.author_empty])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel'])
def test_unmanaged_to_managed(self):
# Now, we test turning an unmanaged model into a managed model
changes = self.get_changes(
[self.author_empty, self.author_unmanaged], [self.author_empty, self.author_unmanaged_managed]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="authorunmanaged", options={})
def test_managed_to_unmanaged(self):
# Now, we turn managed to unmanaged.
changes = self.get_changes(
[self.author_empty, self.author_unmanaged_managed], [self.author_empty, self.author_unmanaged]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorunmanaged", options={"managed": False})
def test_unmanaged_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on
unmanaged models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_unmanaged_default_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_unmanaged_custom_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([self.custom_user], [self.custom_user, self.author_with_custom_user])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("__setting__", "AUTH_USER_MODEL")])
def test_swappable_changed(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
before = self.make_project_state([self.custom_user, self.author_with_user])
with override_settings(AUTH_USER_MODEL="thirdapp.CustomUser"):
after = self.make_project_state([self.custom_user, self.author_with_custom_user])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name='user')
fk_field = changes['testapp'][0].operations[0].field
self.assertEqual(fk_field.remote_field.model, 'thirdapp.CustomUser')
def test_add_field_with_default(self):
"""#22030 - Adding a field with a default should work."""
changes = self.get_changes([self.author_empty], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="name")
def test_custom_deconstructible(self):
"""
Two instances which deconstruct to the same value aren't considered a
change.
"""
changes = self.get_changes([self.author_name_deconstructible_1], [self.author_name_deconstructible_2])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_deconstruct_field_kwarg(self):
"""Field instances are handled correctly by nested deconstruction."""
changes = self.get_changes([self.author_name_deconstructible_3], [self.author_name_deconstructible_4])
self.assertEqual(changes, {})
def test_deconstructible_list(self):
"""Nested deconstruction descends into lists."""
# When lists contain items that deconstruct to identical values, those lists
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed lists should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_tuple(self):
"""Nested deconstruction descends into tuples."""
# When tuples contain items that deconstruct to identical values, those tuples
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed tuples should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_dict(self):
"""Nested deconstruction descends into dict values."""
# When dicts contain items whose values deconstruct to identical values,
# those dicts should be considered equal for the purpose of detecting
# state changes (even if the original values are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed dicts should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_3]
)
self.assertEqual(len(changes), 1)
def test_nested_deconstructible_objects(self):
"""
Nested deconstruction is applied recursively to the args/kwargs of
deconstructed objects.
"""
# If the items within a deconstructed object's args/kwargs have the same
# deconstructed values - whether or not the items themselves are different
# instances - then the object as a whole is regarded as unchanged.
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_2]
)
self.assertEqual(changes, {})
# Differences that exist solely within the args list of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_arg]
)
self.assertEqual(len(changes), 1)
# Additional args should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_arg]
)
self.assertEqual(len(changes), 1)
# Differences that exist solely within the kwargs dict of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_kwarg]
)
self.assertEqual(len(changes), 1)
# Additional kwargs should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_kwarg]
)
self.assertEqual(len(changes), 1)
def test_deconstruct_type(self):
"""
#22951 -- Uninstantiated classes with deconstruct are correctly returned
by deep_deconstruct during serialization.
"""
author = ModelState(
"testapp",
"Author",
[
("id", models.AutoField(primary_key=True)),
("name", models.CharField(
max_length=200,
# IntegerField intentionally not instantiated.
default=models.IntegerField,
))
],
)
changes = self.get_changes([], [author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
def test_replace_string_with_foreignkey(self):
"""
#22300 - Adding an FK in the same "spot" as a deleted CharField should
work.
"""
changes = self.get_changes([self.author_with_publisher_string], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publisher_name")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publisher")
def test_foreign_key_removed_before_target_model(self):
"""
Removing an FK and the model it targets in the same change must remove
the FK field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.author_with_publisher, self.publisher], [self.author_name]
) # removes both the model and FK
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Publisher")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_many_to_many(self, mocked_ask_method):
"""#22435 - Adding a ManyToManyField should not prompt for a default."""
changes = self.get_changes([self.author_empty, self.publisher], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_alter_many_to_many(self):
changes = self.get_changes(
[self.author_with_m2m, self.publisher], [self.author_with_m2m_blank, self.publisher]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_create_with_through_model(self):
"""
Adding a m2m with a through model and the models that use it should be
ordered correctly.
"""
changes = self.get_changes([], [self.author_with_m2m_through, self.publisher, self.contract])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
'CreateModel', 'CreateModel', 'CreateModel', 'AddField',
])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Contract')
self.assertOperationAttributes(changes, 'testapp', 0, 3, model_name='author', name='publishers')
def test_many_to_many_removed_before_through_model(self):
"""
Removing a ManyToManyField and the "through" model in the same change
must remove the field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.book_with_no_author, self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
def test_many_to_many_removed_before_through_model_2(self):
"""
Removing a model that contains a ManyToManyField and the "through" model
in the same change must remove the field before the model to maintain
consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
self.assertOperationAttributes(changes, 'otherapp', 0, 2, name='Book')
def test_m2m_w_through_multistep_remove(self):
"""
A model with a m2m field that specifies a "through" model cannot be
removed in the same migration as that through model as the schema will
pass through an inconsistent state. The autodetector should produce two
migrations to avoid this issue.
"""
changes = self.get_changes([self.author_with_m2m_through, self.publisher, self.contract], [self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
"RemoveField", "RemoveField", "DeleteModel", "DeleteModel"
])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="publisher", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 3, name="Contract")
def test_concrete_field_changed_to_many_to_many(self):
"""
#23938 - Changing a concrete field into a ManyToManyField
first removes the concrete field and then adds the m2m field.
"""
changes = self.get_changes([self.author_with_former_m2m], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publishers", model_name='author')
def test_many_to_many_changed_to_concrete_field(self):
"""
#23938 - Changing a ManyToManyField into a concrete field
first removes the m2m field and then adds the concrete field.
"""
changes = self.get_changes([self.author_with_m2m, self.publisher], [self.author_with_former_m2m])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "AddField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Publisher')
self.assertOperationFieldAttributes(changes, 'testapp', 0, 1, max_length=100)
def test_non_circular_foreignkey_dependency_removal(self):
"""
If two models with a ForeignKey from one to the other are removed at the
same time, the autodetector should remove them in the correct order.
"""
changes = self.get_changes([self.author_with_publisher, self.publisher_with_author], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "DeleteModel", "DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='publisher')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Publisher")
def test_alter_model_options(self):
"""Changing a model's options should make a change."""
changes = self.get_changes([self.author_empty], [self.author_with_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, options={
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
# Changing them back to empty should also make a change
changes = self.get_changes([self.author_with_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", options={})
def test_alter_model_options_proxy(self):
"""Changing a proxy model's options should also make a change."""
changes = self.get_changes(
[self.author_proxy, self.author_empty], [self.author_proxy_options, self.author_empty]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorproxy", options={
"verbose_name": "Super Author"
})
def test_set_alter_order_with_respect_to(self):
"""Setting order_with_respect_to adds a field."""
changes = self.get_changes([self.book, self.author_with_book], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to="book")
def test_add_alter_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the FK too does
things in the right order.
"""
changes = self.get_changes([self.author_name], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name="book")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author", order_with_respect_to="book")
def test_remove_alter_order_with_respect_to(self):
"""
Removing order_with_respect_to when removing the FK too does
things in the right order.
"""
changes = self.get_changes([self.book, self.author_with_book_order_wrt], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo", "RemoveField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to=None)
self.assertOperationAttributes(changes, 'testapp', 0, 1, model_name="author", name="book")
def test_add_model_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the whole model
does things in the right order.
"""
changes = self.get_changes([], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name="Author", options={'order_with_respect_to': 'book'}
)
self.assertNotIn("_order", [name for name, field in changes['testapp'][0].operations[0].fields])
def test_add_model_order_with_respect_to_index_foo_together(self):
changes = self.get_changes([], [
self.book,
ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
}),
])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
},
)
def test_add_model_order_with_respect_to_index_constraint(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes([], [self.book, after])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'CreateModel', operation,
])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={'order_with_respect_to': 'book'},
)
def test_set_alter_order_with_respect_to_index_constraint_foo_together(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
('AlterIndexTogether', {'index_together': {('name', '_order')}}),
('AlterUniqueTogether', {'unique_together': {('id', '_order')}}),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes(
[self.book, self.author_with_book],
[self.book, after],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterOrderWithRespectTo', operation,
])
def test_alter_model_managers(self):
"""
Changing the model managers adds a new operation.
"""
changes = self.get_changes([self.other_pony], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["AlterModelManagers"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
self.assertEqual(changes['otherapp'][0].operations[0].managers[1][1].args, ('a', 'b', 1, 2))
self.assertEqual(changes['otherapp'][0].operations[0].managers[2][1].args, ('x', 'y', 3, 4))
def test_swappable_first_inheritance(self):
"""Swappable models get their CreateModel first."""
changes = self.get_changes([], [self.custom_user, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_default_related_name_option(self):
model_state = ModelState('app', 'model', [
('id', models.AutoField(primary_key=True)),
], options={'default_related_name': 'related_name'})
changes = self.get_changes([], [model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['CreateModel'])
self.assertOperationAttributes(
changes, 'app', 0, 0, name='model',
options={'default_related_name': 'related_name'},
)
altered_model_state = ModelState('app', 'Model', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes([model_state], [altered_model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterModelOptions'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='model', options={})
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable_first_setting(self):
"""Swappable models get their CreateModel first."""
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([], [self.custom_user_no_inherit, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_bases_first(self):
"""Bases of other models come first."""
changes = self.get_changes([], [self.aardvark_based_on_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_bases_first_mixed_case_app_label(self):
app_label = 'MiXedCaseApp'
changes = self.get_changes([], [
ModelState(app_label, 'owner', [
('id', models.AutoField(primary_key=True)),
]),
ModelState(app_label, 'place', [
('id', models.AutoField(primary_key=True)),
('owner', models.ForeignKey('MiXedCaseApp.owner', models.CASCADE)),
]),
ModelState(app_label, 'restaurant', [], bases=('MiXedCaseApp.place',)),
])
self.assertNumberMigrations(changes, app_label, 1)
self.assertOperationTypes(changes, app_label, 0, [
'CreateModel', 'CreateModel', 'CreateModel',
])
self.assertOperationAttributes(changes, app_label, 0, 0, name='owner')
self.assertOperationAttributes(changes, app_label, 0, 1, name='place')
self.assertOperationAttributes(changes, app_label, 0, 2, name='restaurant')
def test_multiple_bases(self):
"""#23956 - Inheriting models doesn't move *_ptr fields into AddField operations."""
A = ModelState("app", "A", [("a_id", models.AutoField(primary_key=True))])
B = ModelState("app", "B", [("b_id", models.AutoField(primary_key=True))])
C = ModelState("app", "C", [], bases=("app.A", "app.B"))
D = ModelState("app", "D", [], bases=("app.A", "app.B"))
E = ModelState("app", "E", [], bases=("app.A", "app.B"))
changes = self.get_changes([], [A, B, C, D, E])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "app", 1)
self.assertOperationTypes(changes, "app", 0, [
"CreateModel", "CreateModel", "CreateModel", "CreateModel", "CreateModel"
])
self.assertOperationAttributes(changes, "app", 0, 0, name="A")
self.assertOperationAttributes(changes, "app", 0, 1, name="B")
self.assertOperationAttributes(changes, "app", 0, 2, name="C")
self.assertOperationAttributes(changes, "app", 0, 3, name="D")
self.assertOperationAttributes(changes, "app", 0, 4, name="E")
def test_proxy_bases_first(self):
"""Bases of proxies come first."""
changes = self.get_changes([], [self.author_empty, self.author_proxy, self.author_proxy_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="AuthorProxy")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="AAuthorProxyProxy")
def test_pk_fk_included(self):
"""
A relation used as the primary key is kept as part of CreateModel.
"""
changes = self.get_changes([], [self.aardvark_pk_fk_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_first_dependency(self):
"""
A dependency to an app with no migrations uses __first__.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "__first__")])
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_last_dependency(self):
"""
A dependency to an app with existing migrations uses the
last migration of that app.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "0002_second")])
def test_alter_fk_before_model_deletion(self):
"""
ForeignKeys are altered _before_ the model they used to
refer to are deleted.
"""
changes = self.get_changes(
[self.author_name, self.publisher_with_author],
[self.aardvark_testapp, self.publisher_with_aardvark_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "AlterField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Aardvark")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="Author")
def test_fk_dependency_other_app(self):
"""
#23100 - ForeignKeys correctly depend on other apps' models.
"""
changes = self.get_changes([self.author_name, self.book], [self.author_with_book, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="book")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "__first__")])
def test_alter_field_to_fk_dependency_other_app(self):
changes = self.get_changes(
[self.author_empty, self.book_with_no_author_fk],
[self.author_empty, self.book],
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', '__first__')])
def test_circular_dependency_mixed_addcreate(self):
"""
#23315 - The dependency resolver knows to put all CreateModel
before AddField and not become unsolvable.
"""
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("country", models.ForeignKey("b.DeliveryCountry", models.CASCADE)),
])
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
])
apackage = ModelState("b", "APackage", [
("id", models.AutoField(primary_key=True)),
("person", models.ForeignKey("a.Person", models.CASCADE)),
])
country = ModelState("b", "DeliveryCountry", [
("id", models.AutoField(primary_key=True)),
])
changes = self.get_changes([], [address, person, apackage, country])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel", "CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertOperationTypes(changes, 'b', 0, ["CreateModel", "CreateModel"])
@override_settings(AUTH_USER_MODEL="a.Tenant")
def test_circular_dependency_swappable(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
tenant = ModelState("a", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("b.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
address = ModelState("b", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('a', 'auto_1'), ('b', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('__setting__', 'AUTH_USER_MODEL')])
@override_settings(AUTH_USER_MODEL="b.Tenant")
def test_circular_dependency_swappable2(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models but with the swappable not being the first migrated
model.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
tenant = ModelState("b", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("a.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('__setting__', 'AUTH_USER_MODEL'), ('a', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('a', 'auto_1')])
@override_settings(AUTH_USER_MODEL="a.Person")
def test_circular_dependency_swappable_self(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
("parent1", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE, related_name='children'))
])
changes = self.get_changes([], [person])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'a', 0, [])
@override_settings(AUTH_USER_MODEL='a.User')
def test_swappable_circular_multi_mti(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
parent = ModelState('a', 'Parent', [
('user', models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE))
])
child = ModelState('a', 'Child', [], bases=('a.Parent',))
user = ModelState('a', 'User', [], bases=(AbstractBaseUser, 'a.Child'))
changes = self.get_changes([], [parent, child, user])
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ['CreateModel', 'CreateModel', 'CreateModel', 'AddField'])
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and blank `CharField` or `TextField`
without default should not prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_blank])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition')
def test_add_non_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and non-blank `CharField` or `TextField`
without default should prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_non_blank])
self.assertEqual(mocked_ask_method.call_count, 2)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
def test_mti_inheritance_model_removal(self):
Animal = ModelState('app', 'Animal', [
("id", models.AutoField(primary_key=True)),
])
Dog = ModelState('app', 'Dog', [], bases=('app.Animal',))
changes = self.get_changes([Animal, Dog], [Animal])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['DeleteModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='Dog')
def test_add_model_with_field_removed_from_base_model(self):
"""
Removing a base field takes place before adding a new inherited model
that has a field with the same name.
"""
before = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
('title', models.CharField(max_length=200)),
]),
]
after = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'book', [
('title', models.CharField(max_length=200)),
], bases=('app.readable',)),
]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RemoveField', 'CreateModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='title', model_name='readable')
self.assertOperationAttributes(changes, 'app', 0, 1, name='book')
def test_parse_number(self):
tests = [
('no_number', None),
('0001_initial', 1),
('0002_model3', 2),
('0002_auto_20380101_1112', 2),
('0002_squashed_0003', 3),
('0002_model2_squashed_0003_other4', 3),
('0002_squashed_0003_squashed_0004', 4),
('0002_model2_squashed_0003_other4_squashed_0005_other6', 5),
('0002_custom_name_20380101_1112_squashed_0003_model', 3),
('2_squashed_4', 4),
]
for migration_name, expected_number in tests:
with self.subTest(migration_name=migration_name):
self.assertEqual(
MigrationAutodetector.parse_number(migration_name),
expected_number,
)
def test_add_custom_fk_with_hardcoded_to(self):
class HardcodedForeignKey(models.ForeignKey):
def __init__(self, *args, **kwargs):
kwargs['to'] = 'testapp.Author'
super().__init__(*args, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super().deconstruct()
del kwargs['to']
return name, path, args, kwargs
book_hardcoded_fk_to = ModelState('testapp', 'Book', [
('author', HardcodedForeignKey(on_delete=models.CASCADE)),
])
changes = self.get_changes(
[self.author_empty],
[self.author_empty, book_hardcoded_fk_to],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Book')
class MigrationSuggestNameTests(SimpleTestCase):
def test_no_operations(self):
class Migration(migrations.Migration):
operations = []
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_no_operations_initial(self):
class Migration(migrations.Migration):
initial = True
operations = []
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_single_operation(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('Person', fields=[])]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person')
class Migration(migrations.Migration):
operations = [migrations.DeleteModel('Person')]
migration = Migration('0002_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'delete_person')
def test_single_operation_long_name(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('A' * 53, fields=[])]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'a' * 53)
def test_two_operations(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.DeleteModel('Animal'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_delete_animal')
def test_two_create_models(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_animal')
def test_two_create_models_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_many_operations_suffix(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person1', fields=[]),
migrations.CreateModel('Person2', fields=[]),
migrations.CreateModel('Person3', fields=[]),
migrations.DeleteModel('Person4'),
migrations.DeleteModel('Person5'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(
migration.suggest_name(),
'person1_person2_person3_delete_person4_and_more',
)
def test_operation_with_no_suggested_name(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.RunSQL('SELECT 1 FROM person;'),
]
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_none_name(self):
class Migration(migrations.Migration):
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
def test_none_name_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_auto(self):
migration = migrations.Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
|
73cb619596066e4995e5352f57108575f6e17bc50d56b9ab1c260649642cdd2d | import logging
import os
import unittest
import warnings
from io import StringIO
from unittest import mock
from django.conf import settings
from django.contrib.staticfiles.finders import get_finder, get_finders
from django.contrib.staticfiles.storage import staticfiles_storage
from django.core.exceptions import ImproperlyConfigured
from django.core.files.storage import default_storage
from django.db import (
IntegrityError, connection, connections, models, router, transaction,
)
from django.forms import (
CharField, EmailField, Form, IntegerField, ValidationError,
formset_factory,
)
from django.http import HttpResponse
from django.template.loader import render_to_string
from django.test import (
SimpleTestCase, TestCase, TransactionTestCase, skipIfDBFeature,
skipUnlessDBFeature,
)
from django.test.html import HTMLParseError, parse_html
from django.test.testcases import DatabaseOperationForbidden
from django.test.utils import (
CaptureQueriesContext, TestContextDecorator, isolate_apps,
override_settings, setup_test_environment,
)
from django.urls import NoReverseMatch, path, reverse, reverse_lazy
from django.utils.log import DEFAULT_LOGGING
from .models import Car, Person, PossessedCar
from .views import empty_response
class SkippingTestCase(SimpleTestCase):
def _assert_skipping(self, func, expected_exc, msg=None):
try:
if msg is not None:
with self.assertRaisesMessage(expected_exc, msg):
func()
else:
with self.assertRaises(expected_exc):
func()
except unittest.SkipTest:
self.fail('%s should not result in a skipped test.' % func.__name__)
def test_skip_unless_db_feature(self):
"""
Testing the django.test.skipUnlessDBFeature decorator.
"""
# Total hack, but it works, just want an attribute that's always true.
@skipUnlessDBFeature("__class__")
def test_func():
raise ValueError
@skipUnlessDBFeature("notprovided")
def test_func2():
raise ValueError
@skipUnlessDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipUnlessDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
self._assert_skipping(test_func, ValueError)
self._assert_skipping(test_func2, unittest.SkipTest)
self._assert_skipping(test_func3, ValueError)
self._assert_skipping(test_func4, unittest.SkipTest)
class SkipTestCase(SimpleTestCase):
@skipUnlessDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipUnlessDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
def test_skip_if_db_feature(self):
"""
Testing the django.test.skipIfDBFeature decorator.
"""
@skipIfDBFeature("__class__")
def test_func():
raise ValueError
@skipIfDBFeature("notprovided")
def test_func2():
raise ValueError
@skipIfDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipIfDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
@skipIfDBFeature("notprovided", "notprovided")
def test_func5():
raise ValueError
self._assert_skipping(test_func, unittest.SkipTest)
self._assert_skipping(test_func2, ValueError)
self._assert_skipping(test_func3, unittest.SkipTest)
self._assert_skipping(test_func4, unittest.SkipTest)
self._assert_skipping(test_func5, ValueError)
class SkipTestCase(SimpleTestCase):
@skipIfDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipIfDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
class SkippingClassTestCase(TestCase):
def test_skip_class_unless_db_feature(self):
@skipUnlessDBFeature("__class__")
class NotSkippedTests(TestCase):
def test_dummy(self):
return
@skipUnlessDBFeature("missing")
@skipIfDBFeature("__class__")
class SkippedTests(TestCase):
def test_will_be_skipped(self):
self.fail("We should never arrive here.")
@skipIfDBFeature("__dict__")
class SkippedTestsSubclass(SkippedTests):
pass
test_suite = unittest.TestSuite()
test_suite.addTest(NotSkippedTests('test_dummy'))
try:
test_suite.addTest(SkippedTests('test_will_be_skipped'))
test_suite.addTest(SkippedTestsSubclass('test_will_be_skipped'))
except unittest.SkipTest:
self.fail('SkipTest should not be raised here.')
result = unittest.TextTestRunner(stream=StringIO()).run(test_suite)
self.assertEqual(result.testsRun, 3)
self.assertEqual(len(result.skipped), 2)
self.assertEqual(result.skipped[0][1], 'Database has feature(s) __class__')
self.assertEqual(result.skipped[1][1], 'Database has feature(s) __class__')
def test_missing_default_databases(self):
@skipIfDBFeature('missing')
class MissingDatabases(SimpleTestCase):
def test_assertion_error(self):
pass
suite = unittest.TestSuite()
try:
suite.addTest(MissingDatabases('test_assertion_error'))
except unittest.SkipTest:
self.fail("SkipTest should not be raised at this stage")
runner = unittest.TextTestRunner(stream=StringIO())
msg = (
"skipIfDBFeature cannot be used on <class 'test_utils.tests."
"SkippingClassTestCase.test_missing_default_databases.<locals>."
"MissingDatabases'> as it doesn't allow queries against the "
"'default' database."
)
with self.assertRaisesMessage(ValueError, msg):
runner.run(suite)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesTests(TestCase):
def test_assert_num_queries(self):
def test_func():
raise ValueError
with self.assertRaises(ValueError):
self.assertNumQueries(2, test_func)
def test_assert_num_queries_with_client(self):
person = Person.objects.create(name='test')
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
def test_func():
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.assertNumQueries(2, test_func)
@unittest.skipUnless(
connection.vendor != 'sqlite' or not connection.is_in_memory_db(),
'For SQLite in-memory tests, closing the connection destroys the database.'
)
class AssertNumQueriesUponConnectionTests(TransactionTestCase):
available_apps = []
def test_ignores_connection_configuration_queries(self):
real_ensure_connection = connection.ensure_connection
connection.close()
def make_configuration_query():
is_opening_connection = connection.connection is None
real_ensure_connection()
if is_opening_connection:
# Avoid infinite recursion. Creating a cursor calls
# ensure_connection() which is currently mocked by this method.
with connection.cursor() as cursor:
cursor.execute('SELECT 1' + connection.features.bare_select_suffix)
ensure_connection = 'django.db.backends.base.base.BaseDatabaseWrapper.ensure_connection'
with mock.patch(ensure_connection, side_effect=make_configuration_query):
with self.assertNumQueries(1):
list(Car.objects.all())
class AssertQuerysetEqualTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.p1 = Person.objects.create(name='p1')
cls.p2 = Person.objects.create(name='p2')
def test_empty(self):
self.assertQuerysetEqual(Person.objects.filter(name='p3'), [])
def test_ordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1, self.p2],
)
def test_unordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p2, self.p1],
ordered=False
)
def test_queryset(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
Person.objects.all().order_by('name'),
)
def test_flat_values_list(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name').values_list('name', flat=True),
['p1', 'p2'],
)
def test_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1.pk, self.p2.pk],
transform=lambda x: x.pk
)
def test_repr_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[repr(self.p1), repr(self.p2)],
transform=repr,
)
def test_undefined_order(self):
# Using an unordered queryset with more than one ordered value
# is an error.
msg = (
'Trying to compare non-ordered queryset against more than one '
'ordered value.'
)
with self.assertRaisesMessage(ValueError, msg):
self.assertQuerysetEqual(
Person.objects.all(),
[self.p1, self.p2],
)
# No error for one value.
self.assertQuerysetEqual(Person.objects.filter(name='p1'), [self.p1])
def test_repeated_values(self):
"""
assertQuerysetEqual checks the number of appearance of each item
when used with option ordered=False.
"""
batmobile = Car.objects.create(name='Batmobile')
k2000 = Car.objects.create(name='K 2000')
PossessedCar.objects.bulk_create([
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
])
with self.assertRaises(AssertionError):
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile, k2000],
ordered=False
)
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile] * 2 + [k2000] * 4,
ordered=False
)
def test_maxdiff(self):
names = ['Joe Smith %s' % i for i in range(20)]
Person.objects.bulk_create([Person(name=name) for name in names])
names.append('Extra Person')
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
self.assertIn('Set self.maxDiff to None to see it.', str(ctx.exception))
original = self.maxDiff
self.maxDiff = None
try:
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
finally:
self.maxDiff = original
exception_msg = str(ctx.exception)
self.assertNotIn('Set self.maxDiff to None to see it.', exception_msg)
for name in names:
self.assertIn(name, exception_msg)
@override_settings(ROOT_URLCONF='test_utils.urls')
class CaptureQueriesContextManagerTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.person_pk = str(Person.objects.create(name='test').pk)
def test_simple(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
pass
self.assertEqual(0, len(captured_queries))
def test_within(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
def test_nested(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.count()
with CaptureQueriesContext(connection) as nested_captured_queries:
Person.objects.count()
self.assertEqual(1, len(nested_captured_queries))
self.assertEqual(2, len(captured_queries))
def test_failure(self):
with self.assertRaises(TypeError):
with CaptureQueriesContext(connection):
raise TypeError
def test_with_client(self):
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 2)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
self.assertIn(self.person_pk, captured_queries[1]['sql'])
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesContextManagerTests(TestCase):
def test_simple(self):
with self.assertNumQueries(0):
pass
with self.assertNumQueries(1):
Person.objects.count()
with self.assertNumQueries(2):
Person.objects.count()
Person.objects.count()
def test_failure(self):
msg = (
'1 != 2 : 1 queries executed, 2 expected\nCaptured queries were:\n'
'1.'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNumQueries(2):
Person.objects.count()
with self.assertRaises(TypeError):
with self.assertNumQueries(4000):
raise TypeError
def test_with_client(self):
person = Person.objects.create(name="test")
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(2):
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertTemplateUsedContextManagerTests(SimpleTestCase):
def test_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed(template_name='template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
render_to_string('template_used/base.html')
def test_nested_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/include.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/extends.html'):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/alternative.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateNotUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
def test_not_used(self):
with self.assertTemplateNotUsed('template_used/base.html'):
pass
with self.assertTemplateNotUsed('template_used/alternative.html'):
pass
def test_error_message(self):
msg = 'template_used/base.html was not rendered. No template was rendered.'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name='template_used/base.html'):
pass
msg2 = (
'template_used/base.html was not rendered. Following templates '
'were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg2):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
with self.assertRaisesMessage(AssertionError, 'No templates used to render the response'):
response = self.client.get('/test_utils/no_template_used/')
self.assertTemplateUsed(response, 'template_used/base.html')
def test_failure(self):
msg = 'response and/or template_name argument must be provided'
with self.assertRaisesMessage(TypeError, msg):
with self.assertTemplateUsed():
pass
msg = 'No templates used to render the response'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
render_to_string('template_used/base.html')
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name=''):
pass
msg = (
'template_used/base.html was not rendered. Following '
'templates were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
def test_assert_used_on_http_response(self):
response = HttpResponse()
msg = '%s() is only usable on responses fetched using the Django test Client.'
with self.assertRaisesMessage(ValueError, msg % 'assertTemplateUsed'):
self.assertTemplateUsed(response, 'template.html')
with self.assertRaisesMessage(ValueError, msg % 'assertTemplateNotUsed'):
self.assertTemplateNotUsed(response, 'template.html')
class HTMLEqualTests(SimpleTestCase):
def test_html_parser(self):
element = parse_html('<div><p>Hello</p></div>')
self.assertEqual(len(element.children), 1)
self.assertEqual(element.children[0].name, 'p')
self.assertEqual(element.children[0].children[0], 'Hello')
parse_html('<p>')
parse_html('<p attr>')
dom = parse_html('<p>foo')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.name, 'p')
self.assertEqual(dom[0], 'foo')
def test_parse_html_in_script(self):
parse_html('<script>var a = "<p" + ">";</script>')
parse_html('''
<script>
var js_sha_link='<p>***</p>';
</script>
''')
# script content will be parsed to text
dom = parse_html('''
<script><p>foo</p> '</scr'+'ipt>' <span>bar</span></script>
''')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.children[0], "<p>foo</p> '</scr'+'ipt>' <span>bar</span>")
def test_self_closing_tags(self):
self_closing_tags = [
'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link',
'meta', 'param', 'source', 'track', 'wbr',
# Deprecated tags
'frame', 'spacer',
]
for tag in self_closing_tags:
with self.subTest(tag):
dom = parse_html('<p>Hello <%s> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
dom = parse_html('<p>Hello <%s /> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
def test_simple_equal_html(self):
self.assertHTMLEqual('', '')
self.assertHTMLEqual('<p></p>', '<p></p>')
self.assertHTMLEqual('<p></p>', ' <p> </p> ')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div><p>Hello</p></div>')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div> <p>Hello</p> </div>')
self.assertHTMLEqual(
'<div>\n<p>Hello</p></div>',
'<div><p>Hello</p></div>\n')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<p>Hello World !</p>',
'<p>Hello World\n\n!</p>')
self.assertHTMLEqual('<p> </p>', '<p></p>')
self.assertHTMLEqual('<p/>', '<p></p>')
self.assertHTMLEqual('<p />', '<p></p>')
self.assertHTMLEqual('<input checked>', '<input checked="checked">')
self.assertHTMLEqual('<p>Hello', '<p> Hello')
self.assertHTMLEqual('<p>Hello</p>World', '<p>Hello</p> World')
def test_ignore_comments(self):
self.assertHTMLEqual(
'<div>Hello<!-- this is a comment --> World!</div>',
'<div>Hello World!</div>')
def test_unequal_html(self):
self.assertHTMLNotEqual('<p>Hello</p>', '<p>Hello!</p>')
self.assertHTMLNotEqual('<p>foobar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo bar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo nbsp</p>', '<p>foo </p>')
self.assertHTMLNotEqual('<p>foo #20</p>', '<p>foo </p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span><span>World</span></p>',
'<p><span>Hello</span>World</p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span>World</p>',
'<p><span>Hello</span><span>World</span></p>')
def test_attributes(self):
self.assertHTMLEqual(
'<input type="text" id="id_name" />',
'<input id="id_name" type="text" />')
self.assertHTMLEqual(
'''<input type='text' id="id_name" />''',
'<input id="id_name" type="text" />')
self.assertHTMLNotEqual(
'<input type="text" id="id_name" />',
'<input type="password" id="id_name" />')
def test_class_attribute(self):
pairs = [
('<p class="foo bar"></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class="foo\tbar"></p>', '<p class="bar foo"></p>'),
('<p class="\tfoo\tbar\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t\t\tfoo\t\t\tbar\t\t\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t \nfoo \t\nbar\n\t "></p>', '<p class="bar foo"></p>'),
]
for html1, html2 in pairs:
with self.subTest(html1):
self.assertHTMLEqual(html1, html2)
def test_boolean_attribute(self):
html1 = '<input checked>'
html2 = '<input checked="">'
html3 = '<input checked="checked">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLEqual(html1, html3)
self.assertHTMLEqual(html2, html3)
self.assertHTMLNotEqual(html1, '<input checked="invalid">')
self.assertEqual(str(parse_html(html1)), '<input checked>')
self.assertEqual(str(parse_html(html2)), '<input checked>')
self.assertEqual(str(parse_html(html3)), '<input checked>')
def test_non_boolean_attibutes(self):
html1 = '<input value>'
html2 = '<input value="">'
html3 = '<input value="value">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLNotEqual(html1, html3)
self.assertEqual(str(parse_html(html1)), '<input value="">')
self.assertEqual(str(parse_html(html2)), '<input value="">')
def test_normalize_refs(self):
pairs = [
(''', '''),
(''', "'"),
(''', '''),
(''', "'"),
("'", '''),
("'", '''),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
]
for pair in pairs:
with self.subTest(repr(pair)):
self.assertHTMLEqual(*pair)
def test_complex_examples(self):
self.assertHTMLEqual(
"""<tr><th><label for="id_first_name">First name:</label></th>
<td><input type="text" name="first_name" value="John" id="id_first_name" /></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><input type="text" id="id_last_name" name="last_name" value="Lennon" /></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><input type="text" value="1940-10-9" name="birthday" id="id_birthday" /></td></tr>""",
"""
<tr><th>
<label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" />
</td></tr>
<tr><th>
<label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" />
</td></tr>
<tr><th>
<label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" />
</td></tr>
""")
self.assertHTMLEqual(
"""<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p>
This is a valid paragraph
<div> this is a div AFTER the p</div>
</body>
</html>""", """
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p> This is a valid paragraph
<!-- browsers would close the p tag here -->
<div> this is a div AFTER the p</div>
</p> <!-- this is invalid HTML parsing, but it should make no
difference in most cases -->
</body>
</html>""")
def test_html_contain(self):
# equal html contains each other
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
self.assertIn(dom2, dom1)
dom2 = parse_html('<div><p>foo</p></div>')
self.assertIn(dom1, dom2)
self.assertNotIn(dom2, dom1)
self.assertNotIn('<p>foo</p>', dom2)
self.assertIn('foo', dom2)
# when a root element is used ...
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertIn(dom2, dom1)
def test_count(self):
# equal html contains each other one time
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertEqual(dom1.count(dom2), 1)
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo foo</p><p>foo</p>')
self.assertEqual(dom2.count('foo'), 3)
dom2 = parse_html('<p class="bar">foo</p>')
self.assertEqual(dom2.count('bar'), 0)
self.assertEqual(dom2.count('class'), 0)
self.assertEqual(dom2.count('p'), 0)
self.assertEqual(dom2.count('o'), 2)
dom2 = parse_html('<p>foo</p><p>foo</p>')
self.assertEqual(dom2.count(dom1), 2)
dom2 = parse_html('<div><p>foo<input type=""></p><p>foo</p></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<div><div><p>foo</p></div></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>foo</p></p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>bar</p></p>')
self.assertEqual(dom2.count(dom1), 0)
# HTML with a root element contains the same HTML with no root element.
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 1)
# Target of search is a sequence of child elements and appears more
# than once.
dom2 = parse_html('<div><p>foo</p><p>bar</p><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 2)
# Searched HTML has additional children.
dom1 = parse_html('<a/><b/>')
dom2 = parse_html('<a/><b/><c/>')
self.assertEqual(dom2.count(dom1), 1)
# No match found in children.
dom1 = parse_html('<b/><a/>')
self.assertEqual(dom2.count(dom1), 0)
# Target of search found among children and grandchildren.
dom1 = parse_html('<b/><b/>')
dom2 = parse_html('<a><b/><b/></a><b/><b/>')
self.assertEqual(dom2.count(dom1), 2)
def test_root_element_escaped_html(self):
html = '<br>'
parsed = parse_html(html)
self.assertEqual(str(parsed), html)
def test_parsing_errors(self):
with self.assertRaises(AssertionError):
self.assertHTMLEqual('<p>', '')
with self.assertRaises(AssertionError):
self.assertHTMLEqual('', '<p>')
error_msg = (
"First argument is not valid HTML:\n"
"('Unexpected end tag `div` (Line 1, Column 6)', (1, 6))"
)
with self.assertRaisesMessage(AssertionError, error_msg):
self.assertHTMLEqual('< div></ div>', '<div></div>')
with self.assertRaises(HTMLParseError):
parse_html('</p>')
def test_escaped_html_errors(self):
msg = (
'<p>\n<foo>\n</p>'
' != '
'<p>\n<foo>\n</p>\n'
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertHTMLEqual('<p><foo></p>', '<p><foo></p>')
with self.assertRaisesMessage(AssertionError, msg):
self.assertHTMLEqual('<p><foo></p>', '<p><foo></p>')
def test_contains_html(self):
response = HttpResponse('''<body>
This is a form: <form method="get">
<input type="text" name="Hello" />
</form></body>''')
self.assertNotContains(response, "<input name='Hello' type='text'>")
self.assertContains(response, '<form method="get">')
self.assertContains(response, "<input name='Hello' type='text'>", html=True)
self.assertNotContains(response, '<form method="get">', html=True)
invalid_response = HttpResponse('''<body <bad>>''')
with self.assertRaises(AssertionError):
self.assertContains(invalid_response, '<p></p>')
with self.assertRaises(AssertionError):
self.assertContains(response, '<p "whats" that>')
def test_unicode_handling(self):
response = HttpResponse('<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>')
self.assertContains(
response,
'<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>',
html=True
)
class JSONEqualTests(SimpleTestCase):
def test_simple_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_unordered(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz", "attr1": "foo"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(json1, json2)
def test_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONEqual(valid_json, invalid_json)
def test_simple_not_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
self.assertJSONNotEqual(json1, json2)
def test_simple_not_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(json1, json2)
def test_not_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(valid_json, invalid_json)
class XMLEqualTests(SimpleTestCase):
def test_simple_equal(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_unordered(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raise(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raises_message(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
msg = '''{xml1} != {xml2}
- <elem attr1='a' />
+ <elem attr2='b' attr1='a' />
? ++++++++++
'''.format(xml1=repr(xml1), xml2=repr(xml2))
with self.assertRaisesMessage(AssertionError, msg):
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal(self):
xml1 = "<elem attr1='a' attr2='c' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLNotEqual(xml1, xml2)
def test_simple_not_equal_raise(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml1, xml2)
def test_parsing_errors(self):
xml_unvalid = "<elem attr1='a attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml_unvalid, xml2)
def test_comment_root(self):
xml1 = "<?xml version='1.0'?><!-- comment1 --><elem attr1='a' attr2='b' />"
xml2 = "<?xml version='1.0'?><!-- comment2 --><elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_with_leading_or_trailing_whitespace(self):
xml1 = "<elem>foo</elem> \t\n"
xml2 = " \t\n<elem>foo</elem>"
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal_with_whitespace_in_the_middle(self):
xml1 = "<elem>foo</elem><elem>bar</elem>"
xml2 = "<elem>foo</elem> <elem>bar</elem>"
self.assertXMLNotEqual(xml1, xml2)
def test_doctype_root(self):
xml1 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example1.dtd"><root />'
xml2 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example2.dtd"><root />'
self.assertXMLEqual(xml1, xml2)
def test_processing_instruction(self):
xml1 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example1.com"?><root />'
)
xml2 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example2.com"?><root />'
)
self.assertXMLEqual(xml1, xml2)
self.assertXMLEqual(
'<?xml-stylesheet href="style1.xslt" type="text/xsl"?><root />',
'<?xml-stylesheet href="style2.xslt" type="text/xsl"?><root />',
)
class SkippingExtraTests(TestCase):
fixtures = ['should_not_be_loaded.json']
# HACK: This depends on internals of our TestCase subclasses
def __call__(self, result=None):
# Detect fixture loading by counting SQL queries, should be zero
with self.assertNumQueries(0):
super().__call__(result)
@unittest.skip("Fixture loading should not be performed for skipped tests.")
def test_fixtures_are_skipped(self):
pass
class AssertRaisesMsgTest(SimpleTestCase):
def test_assert_raises_message(self):
msg = "'Expected message' not found in 'Unexpected message'"
# context manager form of assertRaisesMessage()
with self.assertRaisesMessage(AssertionError, msg):
with self.assertRaisesMessage(ValueError, "Expected message"):
raise ValueError("Unexpected message")
# callable form
def func():
raise ValueError("Unexpected message")
with self.assertRaisesMessage(AssertionError, msg):
self.assertRaisesMessage(ValueError, "Expected message", func)
def test_special_re_chars(self):
"""assertRaisesMessage shouldn't interpret RE special chars."""
def func1():
raise ValueError("[.*x+]y?")
with self.assertRaisesMessage(ValueError, "[.*x+]y?"):
func1()
class AssertWarnsMessageTests(SimpleTestCase):
def test_context_manager(self):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Expected message', UserWarning)
def test_context_manager_failure(self):
msg = "Expected message' not found in 'Unexpected message'"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Unexpected message', UserWarning)
def test_callable(self):
def func():
warnings.warn('Expected message', UserWarning)
self.assertWarnsMessage(UserWarning, 'Expected message', func)
def test_special_re_chars(self):
def func1():
warnings.warn('[.*x+]y?', UserWarning)
with self.assertWarnsMessage(UserWarning, '[.*x+]y?'):
func1()
# TODO: Remove when dropping support for PY39.
class AssertNoLogsTest(SimpleTestCase):
@classmethod
def setUpClass(cls):
super().setUpClass()
logging.config.dictConfig(DEFAULT_LOGGING)
cls.addClassCleanup(logging.config.dictConfig, settings.LOGGING)
def setUp(self):
self.logger = logging.getLogger('django')
@override_settings(DEBUG=True)
def test_fails_when_log_emitted(self):
msg = "Unexpected logs found: ['INFO:django:FAIL!']"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django', 'INFO'):
self.logger.info('FAIL!')
@override_settings(DEBUG=True)
def test_text_level(self):
with self.assertNoLogs('django', 'INFO'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_int_level(self):
with self.assertNoLogs('django', logging.INFO):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_default_level(self):
with self.assertNoLogs('django'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_does_not_hide_other_failures(self):
msg = '1 != 2'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django'):
self.assertEqual(1, 2)
class AssertFieldOutputTests(SimpleTestCase):
def test_assert_field_output(self):
error_invalid = ['Enter a valid email address.']
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid + ['Another error']})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': 'Wrong output'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(
EmailField, {'[email protected]': '[email protected]'}, {'aaa': ['Come on, gimme some well formatted data, dude.']}
)
def test_custom_required_message(self):
class MyCustomField(IntegerField):
default_error_messages = {
'required': 'This is really required.',
}
self.assertFieldOutput(MyCustomField, {}, {}, empty_value=None)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertURLEqualTests(SimpleTestCase):
def test_equal(self):
valid_tests = (
('http://example.com/?', 'http://example.com/'),
('http://example.com/?x=1&', 'http://example.com/?x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2&a=1&a=2', 'http://example.com/?a=1&a=2&y=2&x=1'),
('/path/to/?x=1&y=2&z=3', '/path/to/?z=3&y=2&x=1'),
('?x=1&y=2&z=3', '?z=3&y=2&x=1'),
('/test_utils/no_template_used/', reverse_lazy('no_template_used')),
)
for url1, url2 in valid_tests:
with self.subTest(url=url1):
self.assertURLEqual(url1, url2)
def test_not_equal(self):
invalid_tests = (
# Protocol must be the same.
('http://example.com/', 'https://example.com/'),
('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1'),
('http://example.com/?x=1&y=bar&x=2', 'https://example.com/?y=bar&x=2&x=1'),
# Parameters of the same name must be in the same order.
('/path/to?a=1&a=2', '/path/to/?a=2&a=1')
)
for url1, url2 in invalid_tests:
with self.subTest(url=url1), self.assertRaises(AssertionError):
self.assertURLEqual(url1, url2)
def test_message(self):
msg = (
"Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1')
def test_msg_prefix(self):
msg = (
"Prefix: Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual(
'http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1',
msg_prefix='Prefix: ',
)
class TestForm(Form):
field = CharField()
def clean_field(self):
value = self.cleaned_data.get('field', '')
if value == 'invalid':
raise ValidationError('invalid value')
return value
def clean(self):
if self.cleaned_data.get('field') == 'invalid_non_field':
raise ValidationError('non-field error')
return self.cleaned_data
@classmethod
def _get_cleaned_form(cls, field_value):
form = cls({'field': field_value})
form.full_clean()
return form
@classmethod
def valid(cls):
return cls._get_cleaned_form('valid')
@classmethod
def invalid(cls, nonfield=False):
return cls._get_cleaned_form('invalid_non_field' if nonfield else 'invalid')
class TestFormset(formset_factory(TestForm)):
@classmethod
def _get_cleaned_formset(cls, field_value):
formset = cls({
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '0',
'form-0-field': field_value,
})
formset.full_clean()
return formset
@classmethod
def valid(cls):
return cls._get_cleaned_formset('valid')
@classmethod
def invalid(cls, nonfield=False, nonform=False):
if nonform:
formset = cls({}, error_messages={'missing_management_form': 'error'})
formset.full_clean()
return formset
return cls._get_cleaned_formset('invalid_non_field' if nonfield else 'invalid')
class AssertFormErrorTests(SimpleTestCase):
def test_non_client_response(self):
msg = (
'assertFormError() is only usable on responses fetched using the '
'Django test Client.'
)
response = HttpResponse()
with self.assertRaisesMessage(ValueError, msg):
self.assertFormError(response, 'formset', 0, 'field', 'invalid value')
def test_response_with_no_context(self):
msg = 'Response did not use any contexts to render the response'
response = mock.Mock(context=[])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'invalid value')
msg_prefix = 'Custom prefix'
with self.assertRaisesMessage(AssertionError, f'{msg_prefix}: {msg}'):
self.assertFormError(
response,
'form',
'field',
'invalid value',
msg_prefix=msg_prefix,
)
def test_form_not_in_context(self):
msg = "The form 'form' was not used to render the response"
response = mock.Mock(context=[{}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'invalid value')
def test_field_not_in_form(self):
msg = "The form 'form' in context 0 does not contain the field 'other_field'"
response = mock.Mock(context=[{'form': TestForm.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'other_field', 'invalid value')
def test_field_not_in_form_multicontext(self):
msg = "The form 'form' in context 1 does not contain the field 'other_field'"
response = mock.Mock(context=[{}, {'form': TestForm.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'other_field', 'invalid value')
def test_field_with_no_errors(self):
msg = "The field 'field' on form 'form' in context 0 contains no errors"
response = mock.Mock(context=[{'form': TestForm.valid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'invalid value')
def test_field_with_no_errors_multicontext(self):
msg = "The field 'field' on form 'form' in context 1 contains no errors"
response = mock.Mock(context=[{}, {'form': TestForm.valid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'invalid value')
def test_field_with_different_error(self):
msg = (
"The field 'field' on form 'form' in context 0 does not contain "
"the error 'other error' (actual errors: ['invalid value'])"
)
response = mock.Mock(context=[{'form': TestForm.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'other error')
def test_field_with_different_error_multicontext(self):
msg = (
"The field 'field' on form 'form' in context 1 does not contain "
"the error 'other error' (actual errors: ['invalid value'])"
)
response = mock.Mock(context=[{}, {'form': TestForm.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'form', 'field', 'other error')
def test_basic_positive_assertion(self):
response = mock.Mock(context=[{'form': TestForm.invalid()}])
self.assertFormError(response, 'form', 'field', 'invalid value')
def test_basic_positive_assertion_multicontext(self):
response = mock.Mock(context=[{}, {'form': TestForm.invalid()}])
self.assertFormError(response, 'form', 'field', 'invalid value')
def test_empty_errors_unbound_form(self):
response = mock.Mock(context=[{'form': TestForm()}])
self.assertFormError(response, 'form', 'field', [])
def test_empty_errors_valid_form(self):
response = mock.Mock(context=[{'form': TestForm.valid()}])
self.assertFormError(response, 'form', 'field', [])
def test_empty_errors_invalid_form(self):
response = mock.Mock(context=[{'form': TestForm.invalid()}])
self.assertFormError(response, 'form', 'field', [])
def test_non_field_errors(self):
response = mock.Mock(context=[{'form': TestForm.invalid(nonfield=True)}])
self.assertFormError(response, 'form', None, 'non-field error')
class AssertFormsetErrorTests(SimpleTestCase):
def _get_formset_data(self, field_value):
return {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '0',
'form-0-field': field_value,
}
def test_non_client_response(self):
msg = (
'assertFormsetError() is only usable on responses fetched using '
'the Django test Client.'
)
response = HttpResponse()
with self.assertRaisesMessage(ValueError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_response_with_no_context(self):
msg = 'Response did not use any contexts to render the response'
response = mock.Mock(context=[])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_formset_not_in_context(self):
msg = "The formset 'formset' was not used to render the response"
response = mock.Mock(context=[{}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_field_not_in_form(self):
msg = (
"The formset 'formset', form 0 in context 0 does not contain the "
"field 'other_field'"
)
response = mock.Mock(context=[{'formset': TestFormset.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(
response,
'formset',
0,
'other_field',
'invalid value',
)
def test_field_not_in_form_multicontext(self):
msg = (
"The formset 'formset', form 0 in context 1 does not contain the "
"field 'other_field'"
)
response = mock.Mock(context=[{}, {'formset': TestFormset.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(
response,
'formset',
0,
'other_field',
'invalid value',
)
def test_field_with_no_errors(self):
msg = (
"The field 'field' on formset 'formset', form 0 in context 0 "
"contains no errors"
)
response = mock.Mock(context=[{'formset': TestFormset.valid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_field_with_no_errors_multicontext(self):
msg = (
"The field 'field' on formset 'formset', form 0 in context 1 "
"contains no errors"
)
response = mock.Mock(context=[{}, {'formset': TestFormset.valid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_field_with_different_error(self):
msg = (
"The field 'field' on formset 'formset', form 0 in context 0 does"
" not contain the error 'other error' (actual errors: ['invalid "
"value'])"
)
response = mock.Mock(context=[{'formset': TestFormset.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'other error')
def test_field_with_different_error_multicontext(self):
msg = (
"The field 'field' on formset 'formset', form 0 in context 1 does"
" not contain the error 'other error' (actual errors: ['invalid "
"value'])"
)
response = mock.Mock(context=[{}, {'formset': TestFormset.invalid()}])
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'formset', 0, 'field', 'other error')
def test_basic_positive_assertion(self):
response = mock.Mock(context=[{'formset': TestFormset.invalid()}])
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_basic_positive_assertion_multicontext(self):
response = mock.Mock(context=[{}, {'formset': TestFormset.invalid()}])
self.assertFormsetError(response, 'formset', 0, 'field', 'invalid value')
def test_empty_errors_unbound_formset(self):
response = mock.Mock(context=[{'formset': TestFormset()}])
self.assertFormsetError(response, 'formset', 0, 'field', [])
def test_empty_errors_valid_formset(self):
response = mock.Mock(context=[{}, {'formset': TestFormset.valid()}])
self.assertFormsetError(response, 'formset', 0, 'field', [])
def test_empty_errors_invalid_formset(self):
response = mock.Mock(context=[{}, {'formset': TestFormset.invalid()}])
self.assertFormsetError(response, 'formset', 0, 'field', [])
def test_non_field_errors(self):
response = mock.Mock(context=[
{},
{'formset': TestFormset.invalid(nonfield=True)},
])
self.assertFormsetError(response, 'formset', 0, None, 'non-field error')
def test_non_form_errors(self):
response = mock.Mock(context=[
{},
{'formset': TestFormset.invalid(nonform=True)},
])
self.assertFormsetError(response, 'formset', None, None, 'error')
def test_formset_named_form(self):
formset = TestFormset.invalid()
# The mocked context emulates the template-based rendering of the
# formset.
response = mock.Mock(context=[
{'form': formset},
{'form': formset.management_form},
])
self.assertFormsetError(response, 'form', 0, 'field', 'invalid value')
class FirstUrls:
urlpatterns = [path('first/', empty_response, name='first')]
class SecondUrls:
urlpatterns = [path('second/', empty_response, name='second')]
class SetupTestEnvironmentTests(SimpleTestCase):
def test_setup_test_environment_calling_more_than_once(self):
with self.assertRaisesMessage(RuntimeError, "setup_test_environment() was already called"):
setup_test_environment()
def test_allowed_hosts(self):
for type_ in (list, tuple):
with self.subTest(type_=type_):
allowed_hosts = type_('*')
with mock.patch('django.test.utils._TestState') as x:
del x.saved_data
with self.settings(ALLOWED_HOSTS=allowed_hosts):
setup_test_environment()
self.assertEqual(settings.ALLOWED_HOSTS, ['*', 'testserver'])
class OverrideSettingsTests(SimpleTestCase):
# #21518 -- If neither override_settings nor a setting_changed receiver
# clears the URL cache between tests, then one of test_first or
# test_second will fail.
@override_settings(ROOT_URLCONF=FirstUrls)
def test_urlconf_first(self):
reverse('first')
@override_settings(ROOT_URLCONF=SecondUrls)
def test_urlconf_second(self):
reverse('second')
def test_urlconf_cache(self):
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=FirstUrls):
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=SecondUrls):
with self.assertRaises(NoReverseMatch):
reverse('first')
self.client.get(reverse('second'))
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
def test_override_media_root(self):
"""
Overriding the MEDIA_ROOT setting should be reflected in the
base_location attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_ROOT='test_value'):
self.assertEqual(default_storage.base_location, 'test_value')
def test_override_media_url(self):
"""
Overriding the MEDIA_URL setting should be reflected in the
base_url attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_URL='/test_value/'):
self.assertEqual(default_storage.base_url, '/test_value/')
def test_override_file_upload_permissions(self):
"""
Overriding the FILE_UPLOAD_PERMISSIONS setting should be reflected in
the file_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.file_permissions_mode, 0o644)
with self.settings(FILE_UPLOAD_PERMISSIONS=0o777):
self.assertEqual(default_storage.file_permissions_mode, 0o777)
def test_override_file_upload_directory_permissions(self):
"""
Overriding the FILE_UPLOAD_DIRECTORY_PERMISSIONS setting should be
reflected in the directory_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertIsNone(default_storage.directory_permissions_mode)
with self.settings(FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o777):
self.assertEqual(default_storage.directory_permissions_mode, 0o777)
def test_override_database_routers(self):
"""
Overriding DATABASE_ROUTERS should update the master router.
"""
test_routers = [object()]
with self.settings(DATABASE_ROUTERS=test_routers):
self.assertEqual(router.routers, test_routers)
def test_override_static_url(self):
"""
Overriding the STATIC_URL setting should be reflected in the
base_url attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_URL='/test/'):
self.assertEqual(staticfiles_storage.base_url, '/test/')
def test_override_static_root(self):
"""
Overriding the STATIC_ROOT setting should be reflected in the
location attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_ROOT='/tmp/test'):
self.assertEqual(staticfiles_storage.location, os.path.abspath('/tmp/test'))
def test_override_staticfiles_storage(self):
"""
Overriding the STATICFILES_STORAGE setting should be reflected in
the value of django.contrib.staticfiles.storage.staticfiles_storage.
"""
new_class = 'ManifestStaticFilesStorage'
new_storage = 'django.contrib.staticfiles.storage.' + new_class
with self.settings(STATICFILES_STORAGE=new_storage):
self.assertEqual(staticfiles_storage.__class__.__name__, new_class)
def test_override_staticfiles_finders(self):
"""
Overriding the STATICFILES_FINDERS setting should be reflected in
the return value of django.contrib.staticfiles.finders.get_finders.
"""
current = get_finders()
self.assertGreater(len(list(current)), 1)
finders = ['django.contrib.staticfiles.finders.FileSystemFinder']
with self.settings(STATICFILES_FINDERS=finders):
self.assertEqual(len(list(get_finders())), len(finders))
def test_override_staticfiles_dirs(self):
"""
Overriding the STATICFILES_DIRS setting should be reflected in
the locations attribute of the
django.contrib.staticfiles.finders.FileSystemFinder instance.
"""
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
test_path = '/tmp/test'
expected_location = ('', test_path)
self.assertNotIn(expected_location, finder.locations)
with self.settings(STATICFILES_DIRS=[test_path]):
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
self.assertIn(expected_location, finder.locations)
class TestBadSetUpTestData(TestCase):
"""
An exception in setUpTestData() shouldn't leak a transaction which would
cascade across the rest of the test suite.
"""
class MyException(Exception):
pass
@classmethod
def setUpClass(cls):
try:
super().setUpClass()
except cls.MyException:
cls._in_atomic_block = connection.in_atomic_block
@classmethod
def tearDownClass(Cls):
# override to avoid a second cls._rollback_atomics() which would fail.
# Normal setUpClass() methods won't have exception handling so this
# method wouldn't typically be run.
pass
@classmethod
def setUpTestData(cls):
# Simulate a broken setUpTestData() method.
raise cls.MyException()
def test_failure_in_setUpTestData_should_rollback_transaction(self):
# setUpTestData() should call _rollback_atomics() so that the
# transaction doesn't leak.
self.assertFalse(self._in_atomic_block)
class CaptureOnCommitCallbacksTests(TestCase):
databases = {'default', 'other'}
callback_called = False
def enqueue_callback(self, using='default'):
def hook():
self.callback_called = True
transaction.on_commit(hook, using=using)
def test_no_arguments(self):
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_using(self):
with self.captureOnCommitCallbacks(using='other') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_different_using(self):
with self.captureOnCommitCallbacks(using='default') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(callbacks, [])
def test_execute(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, True)
def test_pre_callback(self):
def pre_hook():
pass
transaction.on_commit(pre_hook, using='default')
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertNotEqual(callbacks[0], pre_hook)
def test_with_rolled_back_savepoint(self):
with self.captureOnCommitCallbacks() as callbacks:
try:
with transaction.atomic():
self.enqueue_callback()
raise IntegrityError
except IntegrityError:
# Inner transaction.atomic() has been rolled back.
pass
self.assertEqual(callbacks, [])
def test_execute_recursive(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
transaction.on_commit(self.enqueue_callback)
self.assertEqual(len(callbacks), 2)
self.assertIs(self.callback_called, True)
class DisallowedDatabaseQueriesTests(SimpleTestCase):
def test_disallowed_database_connections(self):
expected_message = (
"Database connections to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(DatabaseOperationForbidden, expected_message):
connection.connect()
with self.assertRaisesMessage(DatabaseOperationForbidden, expected_message):
connection.temporary_connection()
def test_disallowed_database_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(DatabaseOperationForbidden, expected_message):
Car.objects.first()
def test_disallowed_database_chunked_cursor_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(DatabaseOperationForbidden, expected_message):
next(Car.objects.iterator())
class AllowedDatabaseQueriesTests(SimpleTestCase):
databases = {'default'}
def test_allowed_database_queries(self):
Car.objects.first()
def test_allowed_database_chunked_cursor_queries(self):
next(Car.objects.iterator(), None)
class DatabaseAliasTests(SimpleTestCase):
def setUp(self):
self.addCleanup(setattr, self.__class__, 'databases', self.databases)
def test_no_close_match(self):
self.__class__.databases = {'void'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'void' which is not defined "
"in settings.DATABASES."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_close_match(self):
self.__class__.databases = {'defualt'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'defualt' which is not defined "
"in settings.DATABASES. Did you mean 'default'?"
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_match(self):
self.__class__.databases = {'default', 'other'}
self.assertEqual(self._validate_databases(), frozenset({'default', 'other'}))
def test_all(self):
self.__class__.databases = '__all__'
self.assertEqual(self._validate_databases(), frozenset(connections))
@isolate_apps('test_utils', attr_name='class_apps')
class IsolatedAppsTests(SimpleTestCase):
def test_installed_apps(self):
self.assertEqual([app_config.label for app_config in self.class_apps.get_app_configs()], ['test_utils'])
def test_class_decoration(self):
class ClassDecoration(models.Model):
pass
self.assertEqual(ClassDecoration._meta.apps, self.class_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_method_decoration(self, method_apps):
class MethodDecoration(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
def test_context_manager(self):
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
self.assertEqual(ContextManager._meta.apps, context_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_nested(self, method_apps):
class MethodDecoration(models.Model):
pass
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
with isolate_apps('test_utils') as nested_context_apps:
class NestedContextManager(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
self.assertEqual(ContextManager._meta.apps, context_apps)
self.assertEqual(NestedContextManager._meta.apps, nested_context_apps)
class DoNothingDecorator(TestContextDecorator):
def enable(self):
pass
def disable(self):
pass
class TestContextDecoratorTests(SimpleTestCase):
@mock.patch.object(DoNothingDecorator, 'disable')
def test_exception_in_setup(self, mock_disable):
"""An exception is setUp() is reraised after disable() is called."""
class ExceptionInSetUp(unittest.TestCase):
def setUp(self):
raise NotImplementedError('reraised')
decorator = DoNothingDecorator()
decorated_test_class = decorator.__call__(ExceptionInSetUp)()
self.assertFalse(mock_disable.called)
with self.assertRaisesMessage(NotImplementedError, 'reraised'):
decorated_test_class.setUp()
decorated_test_class.doCleanups()
self.assertTrue(mock_disable.called)
def test_cleanups_run_after_tearDown(self):
calls = []
class SaveCallsDecorator(TestContextDecorator):
def enable(self):
calls.append('enable')
def disable(self):
calls.append('disable')
class AddCleanupInSetUp(unittest.TestCase):
def setUp(self):
calls.append('setUp')
self.addCleanup(lambda: calls.append('cleanup'))
decorator = SaveCallsDecorator()
decorated_test_class = decorator.__call__(AddCleanupInSetUp)()
decorated_test_class.setUp()
decorated_test_class.tearDown()
decorated_test_class.doCleanups()
self.assertEqual(calls, ['enable', 'setUp', 'cleanup', 'disable'])
|
87c7a32deb025916fe0697c9e3ed799141f9a61549a5689e60c70c539256c8fc | import datetime
import os
import re
import unittest
from unittest import mock
from urllib.parse import parse_qsl, urljoin, urlparse
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
try:
import pytz
except ImportError:
pytz = None
from django.contrib import admin
from django.contrib.admin import AdminSite, ModelAdmin
from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME
from django.contrib.admin.models import ADDITION, DELETION, LogEntry
from django.contrib.admin.options import TO_FIELD_VAR
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.admin.utils import quote
from django.contrib.admin.views.main import IS_POPUP_VAR
from django.contrib.auth import REDIRECT_FIELD_NAME, get_permission_codename
from django.contrib.auth.models import Group, Permission, User
from django.contrib.contenttypes.models import ContentType
from django.core import mail
from django.core.checks import Error
from django.core.files import temp as tempfile
from django.forms.utils import ErrorList
from django.template.response import TemplateResponse
from django.test import (
TestCase, modify_settings, override_settings, skipUnlessDBFeature,
)
from django.test.utils import override_script_prefix
from django.urls import NoReverseMatch, resolve, reverse
from django.utils import formats, translation
from django.utils.cache import get_max_age
from django.utils.encoding import iri_to_uri
from django.utils.html import escape
from django.utils.http import urlencode
from . import customadmin
from .admin import CityAdmin, site, site2
from .models import (
Actor, AdminOrderedAdminMethod, AdminOrderedCallable, AdminOrderedField,
AdminOrderedModelMethod, Album, Answer, Answer2, Article, BarAccount, Book,
Bookmark, Box, Category, Chapter, ChapterXtra1, ChapterXtra2, Character,
Child, Choice, City, Collector, Color, ComplexSortedPerson, CoverLetter,
CustomArticle, CyclicOne, CyclicTwo, DooHickey, Employee, EmptyModel,
Fabric, FancyDoodad, FieldOverridePost, FilteredManager, FooAccount,
FoodDelivery, FunkyTag, Gallery, Grommet, Inquisition, Language, Link,
MainPrepopulated, Media, ModelWithStringPrimaryKey, OtherStory, Paper,
Parent, ParentWithDependentChildren, ParentWithUUIDPK, Person, Persona,
Picture, Pizza, Plot, PlotDetails, PluggableSearchPerson, Podcast, Post,
PrePopulatedPost, Promo, Question, ReadablePizza, ReadOnlyPizza,
ReadOnlyRelatedField, Recommendation, Recommender, RelatedPrepopulated,
RelatedWithUUIDPKModel, Report, Restaurant, RowLevelChangePermissionModel,
SecretHideout, Section, ShortMessage, Simple, Song, State, Story,
SuperSecretHideout, SuperVillain, Telegram, TitleTranslation, Topping,
UnchangeableObject, UndeletableObject, UnorderedObject, UserProxy, Villain,
Vodcast, Whatsit, Widget, Worker, WorkHour,
)
ERROR_MESSAGE = "Please enter the correct username and password \
for a staff account. Note that both fields may be case-sensitive."
MULTIPART_ENCTYPE = 'enctype="multipart/form-data"'
def make_aware_datetimes(dt, iana_key):
"""Makes one aware datetime for each supported time zone provider."""
yield dt.replace(tzinfo=zoneinfo.ZoneInfo(iana_key))
if pytz is not None:
yield pytz.timezone(iana_key).localize(dt, is_dst=None)
class AdminFieldExtractionMixin:
"""
Helper methods for extracting data from AdminForm.
"""
def get_admin_form_fields(self, response):
"""
Return a list of AdminFields for the AdminForm in the response.
"""
fields = []
for fieldset in response.context['adminform']:
for field_line in fieldset:
fields.extend(field_line)
return fields
def get_admin_readonly_fields(self, response):
"""
Return the readonly fields for the response's AdminForm.
"""
return [f for f in self.get_admin_form_fields(response) if f.is_readonly]
def get_admin_readonly_field(self, response, field_name):
"""
Return the readonly field for the given field_name.
"""
admin_readonly_fields = self.get_admin_readonly_fields(response)
for field in admin_readonly_fields:
if field.field['name'] == field_name:
return field
@override_settings(ROOT_URLCONF='admin_views.urls', USE_I18N=True, LANGUAGE_CODE='en')
class AdminViewBasicTestCase(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 1',
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>',
date=datetime.datetime(2000, 3, 18, 11, 54, 58),
section=cls.s1,
title='Article 2',
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.color1 = Color.objects.create(value='Red', warm=True)
cls.color2 = Color.objects.create(value='Orange', warm=True)
cls.color3 = Color.objects.create(value='Blue', warm=False)
cls.color4 = Color.objects.create(value='Green', warm=False)
cls.fab1 = Fabric.objects.create(surface='x')
cls.fab2 = Fabric.objects.create(surface='y')
cls.fab3 = Fabric.objects.create(surface='plain')
cls.b1 = Book.objects.create(name='Book 1')
cls.b2 = Book.objects.create(name='Book 2')
cls.pro1 = Promo.objects.create(name='Promo 1', book=cls.b1)
cls.pro1 = Promo.objects.create(name='Promo 2', book=cls.b2)
cls.chap1 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b1)
cls.chap2 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Chapter 1', content='[ insert contents here ]', book=cls.b2)
cls.chap4 = Chapter.objects.create(title='Chapter 2', content='[ insert contents here ]', book=cls.b2)
cls.cx1 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='ChapterXtra1 1')
cls.cx2 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='ChapterXtra1 2')
Actor.objects.create(name='Palin', age=27)
# Post data for edit inline
cls.inline_post_data = {
"name": "Test section",
# inline data
"article_set-TOTAL_FORMS": "6",
"article_set-INITIAL_FORMS": "3",
"article_set-MAX_NUM_FORMS": "0",
"article_set-0-id": cls.a1.pk,
# there is no title in database, give one here or formset will fail.
"article_set-0-title": "Norske bostaver æøå skaper problemer",
"article_set-0-content": "<p>Middle content</p>",
"article_set-0-date_0": "2008-03-18",
"article_set-0-date_1": "11:54:58",
"article_set-0-section": cls.s1.pk,
"article_set-1-id": cls.a2.pk,
"article_set-1-title": "Need a title.",
"article_set-1-content": "<p>Oldest content</p>",
"article_set-1-date_0": "2000-03-18",
"article_set-1-date_1": "11:54:58",
"article_set-2-id": cls.a3.pk,
"article_set-2-title": "Need a title.",
"article_set-2-content": "<p>Newest content</p>",
"article_set-2-date_0": "2009-03-18",
"article_set-2-date_1": "11:54:58",
"article_set-3-id": "",
"article_set-3-title": "",
"article_set-3-content": "",
"article_set-3-date_0": "",
"article_set-3-date_1": "",
"article_set-4-id": "",
"article_set-4-title": "",
"article_set-4-content": "",
"article_set-4-date_0": "",
"article_set-4-date_1": "",
"article_set-5-id": "",
"article_set-5-title": "",
"article_set-5-content": "",
"article_set-5-date_0": "",
"article_set-5-date_1": "",
}
def setUp(self):
self.client.force_login(self.superuser)
def assertContentBefore(self, response, text1, text2, failing_msg=None):
"""
Testing utility asserting that text1 appears before text2 in response
content.
"""
self.assertEqual(response.status_code, 200)
self.assertLess(
response.content.index(text1.encode()),
response.content.index(text2.encode()),
(failing_msg or '') + '\nResponse:\n' + response.content.decode(response.charset)
)
class AdminViewBasicTest(AdminViewBasicTestCase):
def test_trailing_slash_required(self):
"""
If you leave off the trailing slash, app should redirect and add it.
"""
add_url = reverse('admin:admin_views_article_add')
response = self.client.get(add_url[:-1])
self.assertRedirects(response, add_url, status_code=301)
def test_basic_add_GET(self):
"""
A smoke test to ensure GET on the add_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_add_with_GET_args(self):
response = self.client.get(reverse('admin:admin_views_section_add'), {'name': 'My Section'})
self.assertContains(
response, 'value="My Section"',
msg_prefix="Couldn't find an input with the right value in the response"
)
def test_basic_edit_GET(self):
"""
A smoke test to ensure GET on the change_view works.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
def test_basic_edit_GET_string_PK(self):
"""
GET on the change_view (when passing a string as the PK argument for a
model with an integer PK field) redirects to the index page with a
message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_section_change', args=(quote("abc/<b>"),)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['section with ID “abc/<b>” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_edit_GET_old_url_redirect(self):
"""
The change URL changed in Django 1.9, but the old one still redirects.
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,)).replace('change/', '')
)
self.assertRedirects(response, reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
def test_basic_inheritance_GET_string_PK(self):
"""
GET on the change_view (for inherited models) redirects to the index
page with a message saying the object doesn't exist.
"""
response = self.client.get(reverse('admin:admin_views_supervillain_change', args=('abc',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['super villain with ID “abc” doesn’t exist. Perhaps it was deleted?']
)
def test_basic_add_POST(self):
"""
A smoke test to ensure POST on add_view works.
"""
post_data = {
"name": "Another Section",
# inline data
"article_set-TOTAL_FORMS": "3",
"article_set-INITIAL_FORMS": "0",
"article_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_section_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_popup_add_POST(self):
"""HTTP response from a popup is properly escaped."""
post_data = {
IS_POPUP_VAR: '1',
'title': 'title with a new\nline',
'content': 'some content',
'date_0': '2010-09-10',
'date_1': '14:55:39',
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data)
self.assertContains(response, 'title with a new\\nline')
def test_basic_edit_POST(self):
"""
A smoke test to ensure POST on edit_view works.
"""
url = reverse('admin:admin_views_section_change', args=(self.s1.pk,))
response = self.client.post(url, self.inline_post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as(self):
"""
Test "save as".
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-3-section": "1",
"article_set-4-section": "1",
"article_set-5-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_edit_save_as_delete_inline(self):
"""
Should be able to "Save as new" while also deleting an inline.
"""
post_data = self.inline_post_data.copy()
post_data.update({
'_saveasnew': 'Save+as+new',
"article_set-1-section": "1",
"article_set-2-section": "1",
"article_set-2-DELETE": "1",
"article_set-3-section": "1",
})
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), post_data)
self.assertEqual(response.status_code, 302)
# started with 3 articles, one was deleted.
self.assertEqual(Section.objects.latest('id').article_set.count(), 2)
def test_change_list_column_field_classes(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
# callables display the callable name.
self.assertContains(response, 'column-callable_year')
self.assertContains(response, 'field-callable_year')
# lambdas display as "lambda" + index that they appear in list_display.
self.assertContains(response, 'column-lambda8')
self.assertContains(response, 'field-lambda8')
def test_change_list_sorting_callable(self):
"""
Ensure we can sort on a list_display field that is a callable
(column 2 is callable_year in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 2})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on callable are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on callable are out of order."
)
def test_change_list_sorting_property(self):
"""
Sort on a list_display field that is a property (column 10 is
a property in Article model).
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': 10})
self.assertContentBefore(
response,
'Oldest content',
'Middle content',
'Results of sorting on property are out of order.',
)
self.assertContentBefore(
response,
'Middle content',
'Newest content',
'Results of sorting on property are out of order.',
)
def test_change_list_sorting_callable_query_expression(self):
"""Query expressions may be used for admin_order_field."""
tests = [
('order_by_expression', 9),
('order_by_f_expression', 12),
('order_by_orderby_expression', 13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_callable_query_expression_reverse(self):
tests = [
('order_by_expression', -9),
('order_by_f_expression', -12),
('order_by_orderby_expression', -13),
]
for admin_order_field, index in tests:
with self.subTest(admin_order_field):
response = self.client.get(
reverse('admin:admin_views_article_changelist'),
{'o': index},
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
'Results of sorting on callable are out of order.'
)
self.assertContentBefore(
response, 'Newest content', 'Middle content',
'Results of sorting on callable are out of order.'
)
def test_change_list_sorting_model(self):
"""
Ensure we can sort on a list_display field that is a Model method
(column 3 is 'model_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-3'})
self.assertContentBefore(
response, 'Newest content', 'Middle content',
"Results of sorting on Model method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Oldest content',
"Results of sorting on Model method are out of order."
)
def test_change_list_sorting_model_admin(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin method
(column 4 is 'modeladmin_year' in ArticleAdmin)
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '4'})
self.assertContentBefore(
response, 'Oldest content', 'Middle content',
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, 'Middle content', 'Newest content',
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_model_admin_reverse(self):
"""
Ensure we can sort on a list_display field that is a ModelAdmin
method in reverse order (i.e. admin_order_field uses the '-' prefix)
(column 6 is 'model_year_reverse' in ArticleAdmin)
"""
td = '<td class="field-model_property_year">%s</td>'
td_2000, td_2008, td_2009 = td % 2000, td % 2008, td % 2009
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '6'})
self.assertContentBefore(
response, td_2009, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2000,
"Results of sorting on ModelAdmin method are out of order."
)
# Let's make sure the ordering is right and that we don't get a
# FieldError when we change to descending order
response = self.client.get(reverse('admin:admin_views_article_changelist'), {'o': '-6'})
self.assertContentBefore(
response, td_2000, td_2008,
"Results of sorting on ModelAdmin method are out of order."
)
self.assertContentBefore(
response, td_2008, td_2009,
"Results of sorting on ModelAdmin method are out of order."
)
def test_change_list_sorting_multiple(self):
p1 = Person.objects.create(name="Chris", gender=1, alive=True)
p2 = Person.objects.create(name="Chris", gender=2, alive=True)
p3 = Person.objects.create(name="Bob", gender=1, alive=True)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
# Sort by name, gender
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '1.2'})
self.assertContentBefore(response, link3, link1)
self.assertContentBefore(response, link1, link2)
# Sort by gender descending, name
response = self.client.get(reverse('admin:admin_views_person_changelist'), {'o': '-2.1'})
self.assertContentBefore(response, link2, link3)
self.assertContentBefore(response, link3, link1)
def test_change_list_sorting_preserve_queryset_ordering(self):
"""
If no ordering is defined in `ModelAdmin.ordering` or in the query
string, then the underlying order of the queryset should not be
changed, even if it is defined in `Modeladmin.get_queryset()`.
Refs #11868, #7309.
"""
p1 = Person.objects.create(name="Amy", gender=1, alive=True, age=80)
p2 = Person.objects.create(name="Bob", gender=1, alive=True, age=70)
p3 = Person.objects.create(name="Chris", gender=2, alive=False, age=60)
link1 = reverse('admin:admin_views_person_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_person_change', args=(p2.pk,))
link3 = reverse('admin:admin_views_person_change', args=(p3.pk,))
response = self.client.get(reverse('admin:admin_views_person_changelist'), {})
self.assertContentBefore(response, link3, link2)
self.assertContentBefore(response, link2, link1)
def test_change_list_sorting_model_meta(self):
# Test ordering on Model Meta is respected
l1 = Language.objects.create(iso='ur', name='Urdu')
l2 = Language.objects.create(iso='ar', name='Arabic')
link1 = reverse('admin:admin_views_language_change', args=(quote(l1.pk),))
link2 = reverse('admin:admin_views_language_change', args=(quote(l2.pk),))
response = self.client.get(reverse('admin:admin_views_language_changelist'), {})
self.assertContentBefore(response, link2, link1)
# Test we can override with query string
response = self.client.get(reverse('admin:admin_views_language_changelist'), {'o': '-1'})
self.assertContentBefore(response, link1, link2)
def test_change_list_sorting_override_model_admin(self):
# Test ordering on Model Admin is respected, and overrides Model Meta
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_podcast_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
def test_multiple_sort_same_field(self):
# The changelist displays the correct columns if two columns correspond
# to the same ordering field.
dt = datetime.datetime.now()
p1 = Podcast.objects.create(name="A", release_date=dt)
p2 = Podcast.objects.create(name="B", release_date=dt - datetime.timedelta(10))
link1 = reverse('admin:admin_views_podcast_change', args=(quote(p1.pk),))
link2 = reverse('admin:admin_views_podcast_change', args=(quote(p2.pk),))
response = self.client.get(reverse('admin:admin_views_podcast_changelist'), {})
self.assertContentBefore(response, link1, link2)
p1 = ComplexSortedPerson.objects.create(name="Bob", age=10)
p2 = ComplexSortedPerson.objects.create(name="Amy", age=20)
link1 = reverse('admin:admin_views_complexsortedperson_change', args=(p1.pk,))
link2 = reverse('admin:admin_views_complexsortedperson_change', args=(p2.pk,))
response = self.client.get(reverse('admin:admin_views_complexsortedperson_changelist'), {})
# Should have 5 columns (including action checkbox col)
self.assertContains(response, '<th scope="col"', count=5)
self.assertContains(response, 'Name')
self.assertContains(response, 'Colored name')
# Check order
self.assertContentBefore(response, 'Name', 'Colored name')
# Check sorting - should be by name
self.assertContentBefore(response, link2, link1)
def test_sort_indicators_admin_order(self):
"""
The admin shows default sort indicators for all kinds of 'ordering'
fields: field names, method on the model admin and model itself, and
other callables. See #17252.
"""
models = [(AdminOrderedField, 'adminorderedfield'),
(AdminOrderedModelMethod, 'adminorderedmodelmethod'),
(AdminOrderedAdminMethod, 'adminorderedadminmethod'),
(AdminOrderedCallable, 'adminorderedcallable')]
for model, url in models:
model.objects.create(stuff='The Last Item', order=3)
model.objects.create(stuff='The First Item', order=1)
model.objects.create(stuff='The Middle Item', order=2)
response = self.client.get(reverse('admin:admin_views_%s_changelist' % url), {})
# Should have 3 columns including action checkbox col.
self.assertContains(response, '<th scope="col"', count=3, msg_prefix=url)
# Check if the correct column was selected. 2 is the index of the
# 'order' column in the model admin's 'list_display' with 0 being
# the implicit 'action_checkbox' and 1 being the column 'stuff'.
self.assertEqual(response.context['cl'].get_ordering_field_columns(), {2: 'asc'})
# Check order of records.
self.assertContentBefore(response, 'The First Item', 'The Middle Item')
self.assertContentBefore(response, 'The Middle Item', 'The Last Item')
def test_has_related_field_in_list_display_fk(self):
"""Joins shouldn't be performed for <FK>_id fields in list display."""
state = State.objects.create(name='Karnataka')
City.objects.create(state=state, name='Bangalore')
response = self.client.get(reverse('admin:admin_views_city_changelist'), {})
response.context['cl'].list_display = ['id', 'name', 'state']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['id', 'name', 'state_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_has_related_field_in_list_display_o2o(self):
"""Joins shouldn't be performed for <O2O>_id fields in list display."""
media = Media.objects.create(name='Foo')
Vodcast.objects.create(media=media)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'), {})
response.context['cl'].list_display = ['media']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), True)
response.context['cl'].list_display = ['media_id']
self.assertIs(response.context['cl'].has_related_field_in_list_display(), False)
def test_limited_filter(self):
"""Ensure admin changelist filters do not contain objects excluded via limit_choices_to.
This also tests relation-spanning filters (e.g. 'color__value').
"""
response = self.client.get(reverse('admin:admin_views_thing_changelist'))
self.assertContains(
response, '<div id="changelist-filter">',
msg_prefix="Expected filter not found in changelist view"
)
self.assertNotContains(
response, '<a href="?color__id__exact=3">Blue</a>',
msg_prefix="Changelist filter not correctly limited by limit_choices_to"
)
def test_relation_spanning_filters(self):
changelist_url = reverse('admin:admin_views_chapterxtra1_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '<div id="changelist-filter">')
filters = {
'chap__id__exact': {
'values': [c.id for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.id == value,
},
'chap__title': {
'values': [c.title for c in Chapter.objects.all()],
'test': lambda obj, value: obj.chap.title == value,
},
'chap__book__id__exact': {
'values': [b.id for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.id == value,
},
'chap__book__name': {
'values': [b.name for b in Book.objects.all()],
'test': lambda obj, value: obj.chap.book.name == value,
},
'chap__book__promo__id__exact': {
'values': [p.id for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(id=value).exists(),
},
'chap__book__promo__name': {
'values': [p.name for p in Promo.objects.all()],
'test': lambda obj, value: obj.chap.book.promo_set.filter(name=value).exists(),
},
# A forward relation (book) after a reverse relation (promo).
'guest_author__promo__book__id__exact': {
'values': [p.id for p in Book.objects.all()],
'test': lambda obj, value: obj.guest_author.promo_set.filter(book=value).exists(),
},
}
for filter_path, params in filters.items():
for value in params['values']:
query_string = urlencode({filter_path: value})
# ensure filter link exists
self.assertContains(response, '<a href="?%s"' % query_string)
# ensure link works
filtered_response = self.client.get('%s?%s' % (changelist_url, query_string))
self.assertEqual(filtered_response.status_code, 200)
# ensure changelist contains only valid objects
for obj in filtered_response.context['cl'].queryset.all():
self.assertTrue(params['test'](obj, value))
def test_incorrect_lookup_parameters(self):
"""Ensure incorrect lookup parameters are handled gracefully."""
changelist_url = reverse('admin:admin_views_thing_changelist')
response = self.client.get(changelist_url, {'notarealfield': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Spanning relationships through a nonexistent related object (Refs #16716)
response = self.client.get(changelist_url, {'notarealfield__whatever': '5'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
response = self.client.get(changelist_url, {'color__id__exact': 'StringNotInteger!'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
# Regression test for #18530
response = self.client.get(changelist_url, {'pub_date__gte': 'foo'})
self.assertRedirects(response, '%s?e=1' % changelist_url)
def test_isnull_lookups(self):
"""Ensure is_null is handled correctly."""
Article.objects.create(title="I Could Go Anywhere", content="Versatile", date=datetime.datetime.now())
changelist_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(changelist_url)
self.assertContains(response, '4 articles')
response = self.client.get(changelist_url, {'section__isnull': 'false'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': '0'})
self.assertContains(response, '3 articles')
response = self.client.get(changelist_url, {'section__isnull': 'true'})
self.assertContains(response, '1 article')
response = self.client.get(changelist_url, {'section__isnull': '1'})
self.assertContains(response, '1 article')
def test_logout_and_password_change_URLs(self):
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, '<a href="%s">' % reverse('admin:logout'))
self.assertContains(response, '<a href="%s">' % reverse('admin:password_change'))
def test_named_group_field_choices_change_list(self):
"""
Ensures the admin changelist shows correct values in the relevant column
for rows corresponding to instances of a model in which a named group
has been used in the choices option of a field.
"""
link1 = reverse('admin:admin_views_fabric_change', args=(self.fab1.pk,))
link2 = reverse('admin:admin_views_fabric_change', args=(self.fab2.pk,))
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist table isn't showing the right human-readable values "
"set by a model field 'choices' option named group."
)
self.assertContains(response, '<a href="%s">Horizontal</a>' % link1, msg_prefix=fail_msg, html=True)
self.assertContains(response, '<a href="%s">Vertical</a>' % link2, msg_prefix=fail_msg, html=True)
def test_named_group_field_choices_filter(self):
"""
Ensures the filter UI shows correctly when at least one named group has
been used in the choices option of a model field.
"""
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
fail_msg = (
"Changelist filter isn't showing options contained inside a model "
"field 'choices' option named group."
)
self.assertContains(response, '<div id="changelist-filter">')
self.assertContains(
response, '<a href="?surface__exact=x" title="Horizontal">Horizontal</a>',
msg_prefix=fail_msg, html=True
)
self.assertContains(
response, '<a href="?surface__exact=y" title="Vertical">Vertical</a>',
msg_prefix=fail_msg, html=True
)
def test_change_list_null_boolean_display(self):
Post.objects.create(public=None)
response = self.client.get(reverse('admin:admin_views_post_changelist'))
self.assertContains(response, 'icon-unknown.svg')
def test_display_decorator_with_boolean_and_empty_value(self):
msg = (
'The boolean and empty_value arguments to the @display decorator '
'are mutually exclusive.'
)
with self.assertRaisesMessage(ValueError, msg):
class BookAdmin(admin.ModelAdmin):
@admin.display(boolean=True, empty_value='(Missing)')
def is_published(self, obj):
return obj.publish_date is not None
def test_i18n_language_non_english_default(self):
"""
Check if the JavaScript i18n view returns an empty language catalog
if the default language is non-English but the selected language
is English. See #13388 and #3594 for more details.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('en-us'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, 'Choisir une heure')
def test_i18n_language_non_english_fallback(self):
"""
Makes sure that the fallback language is still working properly
in cases where the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='fr'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertContains(response, 'Choisir une heure')
def test_jsi18n_with_context(self):
response = self.client.get(reverse('admin-extra-context:jsi18n'))
self.assertEqual(response.status_code, 200)
def test_jsi18n_format_fallback(self):
"""
The JavaScript i18n view doesn't return localized date/time formats
when the selected language cannot be found.
"""
with self.settings(LANGUAGE_CODE='ru'), translation.override('none'):
response = self.client.get(reverse('admin:jsi18n'))
self.assertNotContains(response, '%d.%m.%Y %H:%M:%S')
self.assertContains(response, '%Y-%m-%d %H:%M:%S')
def test_disallowed_filtering(self):
with self.assertLogs('django.security.DisallowedModelAdminLookup', 'ERROR'):
response = self.client.get(
"%s?owner__email__startswith=fuzzy" % reverse('admin:admin_views_album_changelist')
)
self.assertEqual(response.status_code, 400)
# Filters are allowed if explicitly included in list_filter
response = self.client.get("%s?color__value__startswith=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
response = self.client.get("%s?color__value=red" % reverse('admin:admin_views_thing_changelist'))
self.assertEqual(response.status_code, 200)
# Filters should be allowed if they involve a local field without the
# need to allow them in list_filter or date_hierarchy.
response = self.client.get("%s?age__gt=30" % reverse('admin:admin_views_person_changelist'))
self.assertEqual(response.status_code, 200)
e1 = Employee.objects.create(name='Anonymous', gender=1, age=22, alive=True, code='123')
e2 = Employee.objects.create(name='Visitor', gender=2, age=19, alive=True, code='124')
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e1)
WorkHour.objects.create(datum=datetime.datetime.now(), employee=e2)
response = self.client.get(reverse('admin:admin_views_workhour_changelist'))
self.assertContains(response, 'employee__person_ptr__exact')
response = self.client.get("%s?employee__person_ptr__exact=%d" % (
reverse('admin:admin_views_workhour_changelist'), e1.pk)
)
self.assertEqual(response.status_code, 200)
def test_disallowed_to_field(self):
url = reverse('admin:admin_views_section_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'missing_field'})
self.assertEqual(response.status_code, 400)
# Specifying a field that is not referred by any other model registered
# to this admin site should raise an exception.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(reverse('admin:admin_views_section_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
# #23839 - Primary key should always be allowed, even if the referenced model isn't registered.
response = self.client.get(reverse('admin:admin_views_notreferenced_changelist'), {TO_FIELD_VAR: 'id'})
self.assertEqual(response.status_code, 200)
# #23915 - Specifying a field referenced by another model though a m2m should be allowed.
response = self.client.get(reverse('admin:admin_views_recipe_changelist'), {TO_FIELD_VAR: 'rname'})
self.assertEqual(response.status_code, 200)
# #23604, #23915 - Specifying a field referenced through a reverse m2m relationship should be allowed.
response = self.client.get(reverse('admin:admin_views_ingredient_changelist'), {TO_FIELD_VAR: 'iname'})
self.assertEqual(response.status_code, 200)
# #23329 - Specifying a field that is not referred by any other model directly registered
# to this admin site but registered through inheritance should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyparent_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #23431 - Specifying a field that is only referred to by a inline of a registered
# model should be allowed.
response = self.client.get(reverse('admin:admin_views_referencedbyinline_changelist'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 200)
# #25622 - Specifying a field of a model only referred by a generic
# relation should raise DisallowedModelAdminToField.
url = reverse('admin:admin_views_referencedbygenrel_changelist')
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.get(url, {TO_FIELD_VAR: 'object_id'})
self.assertEqual(response.status_code, 400)
# We also want to prevent the add, change, and delete views from
# leaking a disallowed field value.
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(reverse('admin:admin_views_section_add'), {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
section = Section.objects.create()
url = reverse('admin:admin_views_section_change', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
url = reverse('admin:admin_views_section_delete', args=(section.pk,))
with self.assertLogs('django.security.DisallowedModelAdminToField', 'ERROR'):
response = self.client.post(url, {TO_FIELD_VAR: 'name'})
self.assertEqual(response.status_code, 400)
def test_allowed_filtering_15103(self):
"""
Regressions test for ticket 15103 - filtering on fields defined in a
ForeignKey 'limit_choices_to' should be allowed, otherwise raw_id_fields
can break.
"""
# Filters should be allowed if they are defined on a ForeignKey pointing to this model
url = "%s?leader__name=Palin&leader__age=27" % reverse('admin:admin_views_inquisition_changelist')
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
def test_popup_dismiss_related(self):
"""
Regression test for ticket 20664 - ensure the pk is properly quoted.
"""
actor = Actor.objects.create(name="Palin", age=27)
response = self.client.get("%s?%s" % (reverse('admin:admin_views_actor_changelist'), IS_POPUP_VAR))
self.assertContains(response, 'data-popup-opener="%s"' % actor.pk)
def test_hide_change_password(self):
"""
Tests if the "change password" link in the admin is hidden if the User
does not have a usable password set.
(against 9bea85795705d015cdadc82c68b99196a8554f5c)
"""
user = User.objects.get(username='super')
user.set_unusable_password()
user.save()
self.client.force_login(user)
response = self.client.get(reverse('admin:index'))
self.assertNotContains(
response, reverse('admin:password_change'),
msg_prefix='The "change password" link should not be displayed if a user does not have a usable password.'
)
def test_change_view_with_show_delete_extra_context(self):
"""
The 'show_delete' context variable in the admin's change view controls
the display of the delete button.
"""
instance = UndeletableObject.objects.create(name='foo')
response = self.client.get(reverse('admin:admin_views_undeletableobject_change', args=(instance.pk,)))
self.assertNotContains(response, 'deletelink')
def test_change_view_logs_m2m_field_changes(self):
"""Changes to ManyToManyFields are included in the object's history."""
pizza = ReadablePizza.objects.create(name='Cheese')
cheese = Topping.objects.create(name='cheese')
post_data = {'name': pizza.name, 'toppings': [cheese.pk]}
response = self.client.post(reverse('admin:admin_views_readablepizza_change', args=(pizza.pk,)), post_data)
self.assertRedirects(response, reverse('admin:admin_views_readablepizza_changelist'))
pizza_ctype = ContentType.objects.get_for_model(ReadablePizza, for_concrete_model=False)
log = LogEntry.objects.filter(content_type=pizza_ctype, object_id=pizza.pk).first()
self.assertEqual(log.get_change_message(), 'Changed Toppings.')
def test_allows_attributeerror_to_bubble_up(self):
"""
AttributeErrors are allowed to bubble when raised inside a change list
view. Requires a model to be created so there's something to display.
Refs: #16655, #18593, and #18747
"""
Simple.objects.create()
with self.assertRaises(AttributeError):
self.client.get(reverse('admin:admin_views_simple_changelist'))
def test_changelist_with_no_change_url(self):
"""
ModelAdmin.changelist_view shouldn't result in a NoReverseMatch if url
for change_view is removed from get_urls (#20934).
"""
o = UnchangeableObject.objects.create()
response = self.client.get(reverse('admin:admin_views_unchangeableobject_changelist'))
# Check the format of the shown object -- shouldn't contain a change link
self.assertContains(response, '<th class="field-__str__">%s</th>' % o, html=True)
def test_invalid_appindex_url(self):
"""
#21056 -- URL reversing shouldn't work for nonexistent apps.
"""
good_url = '/test_admin/admin/admin_views/'
confirm_good_url = reverse('admin:app_list',
kwargs={'app_label': 'admin_views'})
self.assertEqual(good_url, confirm_good_url)
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', kwargs={'app_label': 'this_should_fail'})
with self.assertRaises(NoReverseMatch):
reverse('admin:app_list', args=('admin_views2',))
def test_resolve_admin_views(self):
index_match = resolve('/test_admin/admin4/')
list_match = resolve('/test_admin/admin4/auth/user/')
self.assertIs(index_match.func.admin_site, customadmin.simple_site)
self.assertIsInstance(list_match.func.model_admin, customadmin.CustomPwdTemplateUserAdmin)
def test_adminsite_display_site_url(self):
"""
#13749 - Admin should display link to front-end site 'View site'
"""
url = reverse('admin:index')
response = self.client.get(url)
self.assertEqual(response.context['site_url'], '/my-site-url/')
self.assertContains(response, '<a href="/my-site-url/">View site</a>')
def test_date_hierarchy_empty_queryset(self):
self.assertIs(Question.objects.exists(), False)
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertEqual(response.status_code, 200)
@override_settings(TIME_ZONE='America/Sao_Paulo', USE_TZ=True)
def test_date_hierarchy_timezone_dst(self):
# This datetime doesn't exist in this timezone due to DST.
for date in make_aware_datetimes(datetime.datetime(2016, 10, 16, 15), 'America/Sao_Paulo'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=16')
self.assertContains(response, 'question__expires__month=10')
self.assertContains(response, 'question__expires__year=2016')
@override_settings(TIME_ZONE='America/Los_Angeles', USE_TZ=True)
def test_date_hierarchy_local_date_differ_from_utc(self):
# This datetime is 2017-01-01 in UTC.
for date in make_aware_datetimes(datetime.datetime(2016, 12, 31, 16), 'America/Los_Angeles'):
with self.subTest(repr(date.tzinfo)):
q = Question.objects.create(question='Why?', expires=date)
Answer2.objects.create(question=q, answer='Because.')
response = self.client.get(reverse('admin:admin_views_answer2_changelist'))
self.assertContains(response, 'question__expires__day=31')
self.assertContains(response, 'question__expires__month=12')
self.assertContains(response, 'question__expires__year=2016')
def test_sortable_by_columns_subset(self):
expected_sortable_fields = ('date', 'callable_year')
expected_not_sortable_fields = (
'content', 'model_year', 'modeladmin_year', 'model_year_reversed',
'section',
)
response = self.client.get(reverse('admin6:admin_views_article_changelist'))
for field_name in expected_sortable_fields:
self.assertContains(response, '<th scope="col" class="sortable column-%s">' % field_name)
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
def test_get_sortable_by_columns_subset(self):
response = self.client.get(reverse('admin6:admin_views_actor_changelist'))
self.assertContains(response, '<th scope="col" class="sortable column-age">')
self.assertContains(response, '<th scope="col" class="column-name">')
def test_sortable_by_no_column(self):
expected_not_sortable_fields = ('title', 'book')
response = self.client.get(reverse('admin6:admin_views_chapter_changelist'))
for field_name in expected_not_sortable_fields:
self.assertContains(response, '<th scope="col" class="column-%s">' % field_name)
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_get_sortable_by_no_column(self):
response = self.client.get(reverse('admin6:admin_views_color_changelist'))
self.assertContains(response, '<th scope="col" class="column-value">')
self.assertNotContains(response, '<th scope="col" class="sortable column')
def test_app_index_context(self):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(
response,
'<title>Admin_Views administration | Django site admin</title>',
)
self.assertEqual(response.context['title'], 'Admin_Views administration')
self.assertEqual(response.context['app_label'], 'admin_views')
def test_change_view_subtitle_per_object(self):
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_view_subtitle_per_object(self):
viewuser = User.objects.create_user(
username='viewuser', password='secret', is_staff=True,
)
viewuser.user_permissions.add(
get_perm(Article, get_permission_codename('view', Article._meta)),
)
self.client.force_login(viewuser)
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a1.pk,)),
)
self.assertContains(
response,
'<title>Article 1 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 1</h2>')
response = self.client.get(
reverse('admin:admin_views_article_change', args=(self.a2.pk,)),
)
self.assertContains(
response,
'<title>Article 2 | View article | Django site admin</title>',
)
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<h2>Article 2</h2>')
def test_formset_kwargs_can_be_overridden(self):
response = self.client.get(reverse('admin:admin_views_city_add'))
self.assertContains(response, 'overridden_name')
def test_render_views_no_subtitle(self):
tests = [
reverse('admin:index'),
reverse('admin:app_list', args=('admin_views',)),
reverse('admin:admin_views_article_delete', args=(self.a1.pk,)),
reverse('admin:admin_views_article_history', args=(self.a1.pk,)),
]
for url in tests:
with self.subTest(url=url):
with self.assertNoLogs('django.template', 'DEBUG'):
self.client.get(url)
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
# Put this app's and the shared tests templates dirs in DIRS to take precedence
# over the admin's templates dir.
'DIRS': [
os.path.join(os.path.dirname(__file__), 'templates'),
os.path.join(os.path.dirname(os.path.dirname(__file__)), 'templates'),
],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}])
class AdminCustomTemplateTests(AdminViewBasicTestCase):
def test_custom_model_admin_templates(self):
# Test custom change list template with custom extra context
response = self.client.get(reverse('admin:admin_views_customarticle_changelist'))
self.assertContains(response, "var hello = 'Hello!';")
self.assertTemplateUsed(response, 'custom_admin/change_list.html')
# Test custom add form template
response = self.client.get(reverse('admin:admin_views_customarticle_add'))
self.assertTemplateUsed(response, 'custom_admin/add_form.html')
# Add an article so we can test delete, change, and history views
post = self.client.post(reverse('admin:admin_views_customarticle_add'), {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39'
})
self.assertRedirects(post, reverse('admin:admin_views_customarticle_changelist'))
self.assertEqual(CustomArticle.objects.all().count(), 1)
article_pk = CustomArticle.objects.all()[0].pk
# Test custom delete, change, and object history templates
# Test custom change form template
response = self.client.get(reverse('admin:admin_views_customarticle_change', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/change_form.html')
response = self.client.get(reverse('admin:admin_views_customarticle_delete', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/delete_confirmation.html')
response = self.client.post(reverse('admin:admin_views_customarticle_changelist'), data={
'index': 0,
'action': ['delete_selected'],
'_selected_action': ['1'],
})
self.assertTemplateUsed(response, 'custom_admin/delete_selected_confirmation.html')
response = self.client.get(reverse('admin:admin_views_customarticle_history', args=(article_pk,)))
self.assertTemplateUsed(response, 'custom_admin/object_history.html')
# A custom popup response template may be specified by
# ModelAdmin.popup_response_template.
response = self.client.post(reverse('admin:admin_views_customarticle_add') + '?%s=1' % IS_POPUP_VAR, {
'content': '<p>great article</p>',
'date_0': '2008-03-18',
'date_1': '10:54:39',
IS_POPUP_VAR: '1'
})
self.assertEqual(response.template_name, 'custom_admin/popup_response.html')
def test_extended_bodyclass_template_change_form(self):
"""
The admin/change_form.html template uses block.super in the
bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_change_password_template(self):
user = User.objects.get(username='super')
response = self.client.get(reverse('admin:auth_user_password_change', args=(user.id,)))
# The auth/user/change_password.html template uses super in the
# bodyclass block.
self.assertContains(response, 'bodyclass_consistency_check ')
# When a site has multiple passwords in the browser's password manager,
# a browser pop up asks which user the new password is for. To prevent
# this, the username is added to the change password form.
self.assertContains(response, '<input type="text" name="username" value="super" class="hidden">')
def test_extended_bodyclass_template_index(self):
"""
The admin/index.html template uses block.super in the bodyclass block.
"""
response = self.client.get(reverse('admin:index'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_change_list(self):
"""
The admin/change_list.html' template uses block.super
in the bodyclass block.
"""
response = self.client.get(reverse('admin:admin_views_article_changelist'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_login(self):
"""
The admin/login.html template uses block.super in the
bodyclass block.
"""
self.client.logout()
response = self.client.get(reverse('admin:login'))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_confirmation(self):
"""
The admin/delete_confirmation.html template uses
block.super in the bodyclass block.
"""
group = Group.objects.create(name="foogroup")
response = self.client.get(reverse('admin:auth_group_delete', args=(group.id,)))
self.assertContains(response, 'bodyclass_consistency_check ')
def test_extended_bodyclass_template_delete_selected_confirmation(self):
"""
The admin/delete_selected_confirmation.html template uses
block.super in bodyclass block.
"""
group = Group.objects.create(name="foogroup")
post_data = {
'action': 'delete_selected',
'selected_across': '0',
'index': '0',
'_selected_action': group.id
}
response = self.client.post(reverse('admin:auth_group_changelist'), post_data)
self.assertEqual(response.context['site_header'], 'Django administration')
self.assertContains(response, 'bodyclass_consistency_check ')
def test_filter_with_custom_template(self):
"""
A custom template can be used to render an admin filter.
"""
response = self.client.get(reverse('admin:admin_views_color2_changelist'))
self.assertTemplateUsed(response, 'custom_filter_template.html')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewFormUrlTest(TestCase):
current_app = "admin3"
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_change_form_URL_has_correct_value(self):
"""
change_view has form_url in response.context
"""
response = self.client.get(
reverse('admin:admin_views_section_change', args=(self.s1.pk,), current_app=self.current_app)
)
self.assertIn('form_url', response.context, msg='form_url not present in response.context')
self.assertEqual(response.context['form_url'], 'pony')
def test_initial_data_can_be_overridden(self):
"""
The behavior for setting initial form data can be overridden in the
ModelAdmin class. Usually, the initial value is set via the GET params.
"""
response = self.client.get(
reverse('admin:admin_views_restaurant_add', current_app=self.current_app),
{'name': 'test_value'}
)
# this would be the usual behaviour
self.assertNotContains(response, 'value="test_value"')
# this is the overridden behaviour
self.assertContains(response, 'value="overridden_value"')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminJavaScriptTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_js_minified_only_if_debug_is_false(self):
"""
The minified versions of the JS files are only used when DEBUG is False.
"""
with override_settings(DEBUG=False):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertNotContains(response, 'vendor/jquery/jquery.js')
self.assertContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
with override_settings(DEBUG=True):
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, 'vendor/jquery/jquery.js')
self.assertNotContains(response, 'vendor/jquery/jquery.min.js')
self.assertContains(response, 'prepopulate.js')
self.assertContains(response, 'actions.js')
self.assertContains(response, 'collapse.js')
self.assertContains(response, 'inlines.js')
@override_settings(ROOT_URLCONF='admin_views.urls')
class SaveAsTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_as_duplication(self):
"""'save as' creates a new person"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
new_person = Person.objects.latest('id')
self.assertRedirects(response, reverse('admin:admin_views_person_change', args=(new_person.pk,)))
def test_save_as_continue_false(self):
"""
Saving a new object using "Save as new" redirects to the changelist
instead of the change view when ModelAdmin.save_as_continue=False.
"""
post_data = {'_saveasnew': '', 'name': 'John M', 'gender': 1, 'age': 42}
url = reverse('admin:admin_views_person_change', args=(self.per1.pk,), current_app=site2.name)
response = self.client.post(url, post_data)
self.assertEqual(len(Person.objects.filter(name='John M')), 1)
self.assertEqual(len(Person.objects.filter(id=self.per1.pk)), 1)
self.assertRedirects(response, reverse('admin:admin_views_person_changelist', current_app=site2.name))
def test_save_as_new_with_validation_errors(self):
"""
When you click "Save as new" and have a validation error,
you only see the "Save as new" button and not the other save buttons,
and that only the "Save as" button is visible.
"""
response = self.client.post(reverse('admin:admin_views_person_change', args=(self.per1.pk,)), {
'_saveasnew': '',
'gender': 'invalid',
'_addanother': 'fail',
})
self.assertContains(response, 'Please correct the errors below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_validation_errors_with_inlines(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': 'Child',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': '_invalid',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
def test_save_as_new_with_inlines_with_validation_errors(self):
parent = Parent.objects.create(name='Father')
child = Child.objects.create(parent=parent, name='Child')
response = self.client.post(reverse('admin:admin_views_parent_change', args=(parent.pk,)), {
'_saveasnew': 'Save as new',
'child_set-0-parent': parent.pk,
'child_set-0-id': child.pk,
'child_set-0-name': '_invalid',
'child_set-INITIAL_FORMS': 1,
'child_set-MAX_NUM_FORMS': 1000,
'child_set-MIN_NUM_FORMS': 0,
'child_set-TOTAL_FORMS': 4,
'name': 'Father',
})
self.assertContains(response, 'Please correct the error below.')
self.assertFalse(response.context['show_save_and_add_another'])
self.assertFalse(response.context['show_save_and_continue'])
self.assertTrue(response.context['show_save_as_new'])
@override_settings(ROOT_URLCONF='admin_views.urls')
class CustomModelAdminTest(AdminViewBasicTestCase):
def test_custom_admin_site_login_form(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
login = self.client.post(reverse('admin2:login'), {
REDIRECT_FIELD_NAME: reverse('admin2:index'),
'username': 'customform',
'password': 'secret',
}, follow=True)
self.assertIsInstance(login, TemplateResponse)
self.assertContains(login, 'custom form error')
self.assertContains(login, 'path/to/media.css')
def test_custom_admin_site_login_template(self):
self.client.logout()
response = self.client.get(reverse('admin2:index'), follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/login.html')
self.assertContains(response, 'Hello from a custom login template')
def test_custom_admin_site_logout_template(self):
response = self.client.get(reverse('admin2:logout'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/logout.html')
self.assertContains(response, 'Hello from a custom logout template')
def test_custom_admin_site_index_view_and_template(self):
response = self.client.get(reverse('admin2:index'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/index.html')
self.assertContains(response, 'Hello from a custom index template *bar*')
def test_custom_admin_site_app_index_view_and_template(self):
response = self.client.get(reverse('admin2:app_list', args=('admin_views',)))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/app_index.html')
self.assertContains(response, 'Hello from a custom app_index template')
def test_custom_admin_site_password_change_template(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'Hello from a custom password change form template')
def test_custom_admin_site_password_change_with_extra_context(self):
response = self.client.get(reverse('admin2:password_change'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_form.html')
self.assertContains(response, 'eggs')
def test_custom_admin_site_password_change_done_template(self):
response = self.client.get(reverse('admin2:password_change_done'))
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/password_change_done.html')
self.assertContains(response, 'Hello from a custom password change done template')
def test_custom_admin_site_view(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin2:my_view'))
self.assertEqual(response.content, b"Django is a magical pony!")
def test_pwd_change_custom_template(self):
self.client.force_login(self.superuser)
su = User.objects.get(username='super')
response = self.client.get(reverse('admin4:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 200)
def get_perm(Model, codename):
"""Return the permission object, for the Model"""
ct = ContentType.objects.get_for_model(Model, for_concrete_model=False)
return Permission.objects.get(content_type=ct, codename=codename)
@override_settings(
ROOT_URLCONF='admin_views.urls',
# Test with the admin's documented list of required context processors.
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewPermissionsTest(TestCase):
"""Tests for Admin Views Permissions."""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.nostaffuser = User.objects.create_user(username='nostaff', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1,
another_section=cls.s1,
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
# Setup permissions, for our users who can add, change, and delete.
opts = Article._meta
# User who can view Articles
cls.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('view', opts)))
# User who can add Articles
cls.adduser.user_permissions.add(get_perm(Article, get_permission_codename('add', opts)))
# User who can change Articles
cls.changeuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
cls.nostaffuser.user_permissions.add(get_perm(Article, get_permission_codename('change', opts)))
# User who can delete Articles
cls.deleteuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', opts)))
cls.deleteuser.user_permissions.add(get_perm(Section, get_permission_codename('delete', Section._meta)))
# login POST dicts
cls.index_url = reverse('admin:index')
cls.super_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'super',
'password': 'secret',
}
cls.super_email_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'secret',
}
cls.super_email_bad_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': '[email protected]',
'password': 'notsecret',
}
cls.adduser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'adduser',
'password': 'secret',
}
cls.changeuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'changeuser',
'password': 'secret',
}
cls.deleteuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'deleteuser',
'password': 'secret',
}
cls.nostaff_login = {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'nostaff',
'password': 'secret',
}
cls.joepublic_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'joepublic',
'password': 'secret',
}
cls.viewuser_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'username': 'viewuser',
'password': 'secret',
}
cls.no_username_login = {
REDIRECT_FIELD_NAME: cls.index_url,
'password': 'secret',
}
def test_login(self):
"""
Make sure only staff members can log in.
Successful posts to the login page will redirect to the original url.
Unsuccessful attempts will continue to render the login page with
a 200 status code.
"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
# Super User
response = self.client.get(self.index_url)
self.assertRedirects(response, login_url)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Test if user enters email address
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# only correct passwords get a username hint
login = self.client.post(login_url, self.super_email_bad_login)
self.assertContains(login, ERROR_MESSAGE)
new_user = User(username='jondoe', password='secret', email='[email protected]')
new_user.save()
# check to ensure if there are multiple email addresses a user doesn't get a 500
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# View User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.viewuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Add User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.adduser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Change User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.changeuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Delete User
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.deleteuser_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
# Regular User should not be able to login.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Requests without username should not return 500 errors.
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.no_username_login)
self.assertEqual(login.status_code, 200)
self.assertFormError(login, 'form', 'username', ['This field is required.'])
def test_login_redirect_for_direct_get(self):
"""
Login redirect should be to the admin index page when going directly to
/admin/login/.
"""
response = self.client.get(reverse('admin:login'))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context[REDIRECT_FIELD_NAME], reverse('admin:index'))
def test_login_has_permission(self):
# Regular User should not be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.joepublic_login)
self.assertContains(login, 'permission denied')
# User with permissions should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), self.nostaff_login)
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
# Staff should be able to login.
response = self.client.get(reverse('has_permission_admin:index'))
self.assertEqual(response.status_code, 302)
login = self.client.post(reverse('has_permission_admin:login'), {
REDIRECT_FIELD_NAME: reverse('has_permission_admin:index'),
'username': 'deleteuser',
'password': 'secret',
})
self.assertRedirects(login, reverse('has_permission_admin:index'))
self.assertFalse(login.context)
self.client.get(reverse('has_permission_admin:logout'))
def test_login_successfully_redirects_to_original_URL(self):
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
query_string = 'the-answer=42'
redirect_url = '%s?%s' % (self.index_url, query_string)
new_next = {REDIRECT_FIELD_NAME: redirect_url}
post_data = self.super_login.copy()
post_data.pop(REDIRECT_FIELD_NAME)
login = self.client.post(
'%s?%s' % (reverse('admin:login'), urlencode(new_next)),
post_data)
self.assertRedirects(login, redirect_url)
def test_double_login_is_not_allowed(self):
"""Regression test for #19327"""
login_url = '%s?next=%s' % (reverse('admin:login'), reverse('admin:index'))
response = self.client.get(self.index_url)
self.assertEqual(response.status_code, 302)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with non-admin user fails
login = self.client.post(login_url, self.joepublic_login)
self.assertContains(login, ERROR_MESSAGE)
# Establish a valid admin session
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
# Logging in with admin user while already logged in
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, self.index_url)
self.assertFalse(login.context)
self.client.get(reverse('admin:logout'))
def test_login_page_notice_for_non_staff_users(self):
"""
A logged-in non-staff user trying to access the admin index should be
presented with the login page and a hint indicating that the current
user doesn't have access to it.
"""
hint_template = 'You are authenticated as {}'
# Anonymous user should not be shown the hint
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertNotContains(response, hint_template.format(''), status_code=200)
# Non-staff user should be shown the hint
self.client.force_login(self.nostaffuser)
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'login-form')
self.assertContains(response, hint_template.format(self.nostaffuser.username), status_code=200)
def test_add_view(self):
"""Test add view restricts access and actually adds items."""
add_dict = {
'title': 'Døm ikke',
'content': '<p>great article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
# Change User should not have access to add articles
self.client.force_login(self.changeuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.get(reverse('admin:logout'))
# View User should not have access to add articles
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.status_code, 403)
# Try POST just to make sure
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
# Now give the user permission to add but not change.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
response = self.client.get(reverse('admin:admin_views_article_add'))
self.assertEqual(response.context['title'], 'Add article')
self.assertContains(response, '<title>Add article | Django site admin</title>')
self.assertContains(response, '<input type="submit" value="Save and view" name="_continue">')
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict, follow=False)
self.assertEqual(post.status_code, 302)
self.assertEqual(Article.objects.count(), 4)
article = Article.objects.latest('pk')
response = self.client.get(reverse('admin:admin_views_article_change', args=(article.pk,)))
self.assertContains(response, '<li class="success">The article “Døm ikke” was added successfully.</li>')
article.delete()
self.client.get(reverse('admin:logout'))
# Add user may login and POST to add view, then redirect to admin root
self.client.force_login(self.adduser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
change_list_link = '› <a href="%s">Articles</a>' % reverse('admin:admin_views_article_changelist')
self.assertNotContains(
addpage, change_list_link,
msg_prefix='User restricted to add permission is given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 4)
self.assertEqual(len(mail.outbox), 2)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a created object')
self.client.get(reverse('admin:logout'))
# The addition was logged correctly
addition_log = LogEntry.objects.all()[0]
new_article = Article.objects.last()
article_ct = ContentType.objects.get_for_model(Article)
self.assertEqual(addition_log.user_id, self.adduser.pk)
self.assertEqual(addition_log.content_type_id, article_ct.pk)
self.assertEqual(addition_log.object_id, str(new_article.pk))
self.assertEqual(addition_log.object_repr, "Døm ikke")
self.assertEqual(addition_log.action_flag, ADDITION)
self.assertEqual(addition_log.get_change_message(), "Added.")
# Super can add too, but is redirected to the change list view
self.client.force_login(self.superuser)
addpage = self.client.get(reverse('admin:admin_views_article_add'))
self.assertContains(
addpage, change_list_link,
msg_prefix='Unrestricted user is not given link to change list view in breadcrumbs.'
)
post = self.client.post(reverse('admin:admin_views_article_add'), add_dict)
self.assertRedirects(post, reverse('admin:admin_views_article_changelist'))
self.assertEqual(Article.objects.count(), 5)
self.client.get(reverse('admin:logout'))
# 8509 - if a normal user is already logged in, it is possible
# to change user into the superuser without error
self.client.force_login(self.joepublicuser)
# Check and make sure that if user expires, data still persists
self.client.force_login(self.superuser)
# make sure the view removes test cookie
self.assertIs(self.client.session.test_cookie_worked(), False)
@mock.patch('django.contrib.admin.options.InlineModelAdmin.has_change_permission')
def test_add_view_with_view_only_inlines(self, has_change_permission):
"""User with add permission to a section but view-only for inlines."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('add', Section._meta)))
self.client.force_login(self.viewuser)
# Valid POST creates a new section.
data = {
'name': 'New obj',
'article_set-TOTAL_FORMS': 0,
'article_set-INITIAL_FORMS': 0,
}
response = self.client.post(reverse('admin:admin_views_section_add'), data)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(Section.objects.latest('id').name, data['name'])
# InlineModelAdmin.has_change_permission()'s obj argument is always
# None during object add.
self.assertEqual([obj for (request, obj), _ in has_change_permission.call_args_list], [None, None])
def test_change_view(self):
"""Change view should restrict access and allow users to edit items."""
change_dict = {
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
article_changelist_url = reverse('admin:admin_views_article_changelist')
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.status_code, 403)
response = self.client.get(article_change_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view articles but not make changes.
self.client.force_login(self.viewuser)
response = self.client.get(article_changelist_url)
self.assertContains(
response,
'<title>Select article to view | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to view</h1>')
self.assertEqual(response.context['title'], 'Select article to view')
response = self.client.get(article_change_url)
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<label>Extra form field:</label>')
self.assertContains(response, '<a href="/test_admin/admin/admin_views/article/" class="closelink">Close</a>')
self.assertEqual(response.context['title'], 'View article')
post = self.client.post(article_change_url, change_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>Middle content</p>')
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(article_changelist_url)
self.assertEqual(response.context['title'], 'Select article to change')
self.assertContains(
response,
'<title>Select article to change | Django site admin</title>',
)
self.assertContains(response, '<h1>Select article to change</h1>')
response = self.client.get(article_change_url)
self.assertEqual(response.context['title'], 'Change article')
self.assertContains(
response,
'<title>Change article | Django site admin</title>',
)
self.assertContains(response, '<h1>Change article</h1>')
post = self.client.post(article_change_url, change_dict)
self.assertRedirects(post, article_changelist_url)
self.assertEqual(Article.objects.get(pk=self.a1.pk).content, '<p>edited article</p>')
# one error in form should produce singular error message, multiple errors plural
change_dict['title'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the error below.',
msg_prefix='Singular error message not found in response to post with one error'
)
change_dict['content'] = ''
post = self.client.post(article_change_url, change_dict)
self.assertContains(
post, 'Please correct the errors below.',
msg_prefix='Plural error message not found in response to post with multiple errors'
)
self.client.get(reverse('admin:logout'))
# Test redirection when using row-level change permissions. Refs #11513.
r1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
r2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
r3 = RowLevelChangePermissionModel.objects.create(id=3, name='odd id mult 3')
r6 = RowLevelChangePermissionModel.objects.create(id=6, name='even id mult 3')
change_url_1 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r1.pk,))
change_url_2 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r2.pk,))
change_url_3 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r3.pk,))
change_url_6 = reverse('admin:admin_views_rowlevelchangepermissionmodel_change', args=(r6.pk,))
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1)
self.assertEqual(response.status_code, 403)
response = self.client.post(change_url_1, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertEqual(response.status_code, 403)
response = self.client.get(change_url_2)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_2, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertRedirects(response, self.index_url)
response = self.client.get(change_url_3)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_3, {'name': 'changed'})
self.assertEqual(response.status_code, 403)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=3).name, 'odd id mult 3')
response = self.client.get(change_url_6)
self.assertEqual(response.status_code, 200)
response = self.client.post(change_url_6, {'name': 'changed'})
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=6).name, 'changed')
self.assertRedirects(response, self.index_url)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
response = self.client.get(change_url_1, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_1, {'name': 'changed'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertContains(response, 'login-form')
response = self.client.get(change_url_2, follow=True)
self.assertContains(response, 'login-form')
response = self.client.post(change_url_2, {'name': 'changed again'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_change_view_without_object_change_permission(self):
"""
The object should be read-only if the user has permission to view it
and change objects of that type but not to change the current object.
"""
change_url = reverse('admin9:admin_views_article_change', args=(self.a1.pk,))
self.client.force_login(self.viewuser)
response = self.client.get(change_url)
self.assertEqual(response.context['title'], 'View article')
self.assertContains(response, '<title>View article | Django site admin</title>')
self.assertContains(response, '<h1>View article</h1>')
self.assertContains(response, '<a href="/test_admin/admin9/admin_views/article/" class="closelink">Close</a>')
def test_change_view_save_as_new(self):
"""
'Save as new' should raise PermissionDenied for users without the 'add'
permission.
"""
change_dict_save_as_new = {
'_saveasnew': 'Save as new',
'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
'section': self.s1.pk,
}
article_change_url = reverse('admin:admin_views_article_change', args=(self.a1.pk,))
# Add user can perform "Save as new".
article_count = Article.objects.count()
self.client.force_login(self.adduser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), article_count + 1)
self.client.logout()
# Change user cannot perform "Save as new" (no 'add' permission).
article_count = Article.objects.count()
self.client.force_login(self.changeuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), article_count)
# User with both add and change permissions should be redirected to the
# change page for the newly created object.
article_count = Article.objects.count()
self.client.force_login(self.superuser)
post = self.client.post(article_change_url, change_dict_save_as_new)
self.assertEqual(Article.objects.count(), article_count + 1)
new_article = Article.objects.latest('id')
self.assertRedirects(post, reverse('admin:admin_views_article_change', args=(new_article.pk,)))
def test_change_view_with_view_only_inlines(self):
"""
User with change permission to a section but view-only for inlines.
"""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
# Valid POST changes the name.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 3,
'article_set-INITIAL_FORMS': 3
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 3)
def test_change_view_with_view_and_add_inlines(self):
"""User has view and add permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('add', Article._meta)))
self.client.force_login(self.viewuser)
# GET shows inlines.
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
# Valid POST creates a new article.
data = {
'name': 'Can edit name with view-only inlines',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-3-id': [''],
'article_set-3-title': ['A title'],
'article_set-3-content': ['Added content'],
'article_set-3-date_0': ['2008-3-18'],
'article_set-3-date_1': ['11:54:58'],
'article_set-3-section': [str(self.s1.pk)],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Section.objects.get(pk=self.s1.pk).name, data['name'])
self.assertEqual(Article.objects.count(), 4)
# Invalid POST reshows inlines.
del data['name']
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertEqual(response.status_code, 200)
self.assertEqual(len(response.context['inline_admin_formsets']), 1)
formset = response.context['inline_admin_formsets'][0]
self.assertEqual(len(formset.forms), 6)
def test_change_view_with_view_and_delete_inlines(self):
"""User has view and delete permissions on the inline model."""
self.viewuser.user_permissions.add(get_perm(Section, get_permission_codename('change', Section._meta)))
self.client.force_login(self.viewuser)
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
# Inline POST details are ignored without delete permission.
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 3)
# Deletion successful when delete permission is added.
self.viewuser.user_permissions.add(get_perm(Article, get_permission_codename('delete', Article._meta)))
data = {
'name': 'Name is required.',
'article_set-TOTAL_FORMS': 6,
'article_set-INITIAL_FORMS': 3,
'article_set-0-id': [str(self.a1.pk)],
'article_set-0-DELETE': ['on'],
}
response = self.client.post(reverse('admin:admin_views_section_change', args=(self.s1.pk,)), data)
self.assertRedirects(response, reverse('admin:admin_views_section_changelist'))
self.assertEqual(Article.objects.count(), 2)
def test_delete_view(self):
"""Delete view should restrict access and actually delete items."""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_article_delete', args=(self.a1.pk,))
# add user should not be able to delete articles
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# view user should not be able to delete articles
self.client.force_login(self.viewuser)
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 403)
post = self.client.post(delete_url, delete_dict)
self.assertEqual(post.status_code, 403)
self.assertEqual(Article.objects.count(), 3)
self.client.logout()
# Delete user can delete
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 3</li>")
# test response contains link to related Article
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
response = self.client.get(delete_url)
self.assertContains(response, "admin_views/article/%s/" % self.a1.pk)
self.assertContains(response, "<h2>Summary</h2>")
self.assertContains(response, "<li>Articles: 1</li>")
post = self.client.post(delete_url, delete_dict)
self.assertRedirects(post, self.index_url)
self.assertEqual(Article.objects.count(), 2)
self.assertEqual(len(mail.outbox), 1)
self.assertEqual(mail.outbox[0].subject, 'Greetings from a deleted object')
article_ct = ContentType.objects.get_for_model(Article)
logged = LogEntry.objects.get(content_type=article_ct, action_flag=DELETION)
self.assertEqual(logged.object_id, str(self.a1.pk))
def test_delete_view_with_no_default_permissions(self):
"""
The delete view allows users to delete collected objects without a
'delete' permission (ReadOnlyPizza.Meta.default_permissions is empty).
"""
pizza = ReadOnlyPizza.objects.create(name='Double Cheese')
delete_url = reverse('admin:admin_views_readonlypizza_delete', args=(pizza.pk,))
self.client.force_login(self.adduser)
response = self.client.get(delete_url)
self.assertContains(response, 'admin_views/readonlypizza/%s/' % pizza.pk)
self.assertContains(response, '<h2>Summary</h2>')
self.assertContains(response, '<li>Read only pizzas: 1</li>')
post = self.client.post(delete_url, {'post': 'yes'})
self.assertRedirects(post, reverse('admin:admin_views_readonlypizza_changelist'))
self.assertEqual(ReadOnlyPizza.objects.count(), 0)
def test_delete_view_nonexistent_obj(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_article_delete', args=('nonexistent',))
response = self.client.get(url, follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “nonexistent” doesn’t exist. Perhaps it was deleted?']
)
def test_history_view(self):
"""History view should restrict access."""
# add user should not be able to view the list of article or change any of them
self.client.force_login(self.adduser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 403)
self.client.get(reverse('admin:logout'))
# view user can view all items
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
# change user can view all items and edit them
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=(self.a1.pk,)))
self.assertEqual(response.status_code, 200)
# Test redirection when using row-level change permissions. Refs #11513.
rl1 = RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
rl2 = RowLevelChangePermissionModel.objects.create(id=2, name="even id")
logins = [self.superuser, self.viewuser, self.adduser, self.changeuser, self.deleteuser]
for login_user in logins:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 403)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
self.client.get(reverse('admin:logout'))
for login_user in [self.joepublicuser, self.nostaffuser]:
with self.subTest(login_user.username):
self.client.force_login(login_user)
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl1.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
url = reverse('admin:admin_views_rowlevelchangepermissionmodel_history', args=(rl2.pk,))
response = self.client.get(url, follow=True)
self.assertContains(response, 'login-form')
self.client.get(reverse('admin:logout'))
def test_history_view_bad_url(self):
self.client.force_login(self.changeuser)
response = self.client.get(reverse('admin:admin_views_article_history', args=('foo',)), follow=True)
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['article with ID “foo” doesn’t exist. Perhaps it was deleted?']
)
def test_conditionally_show_add_section_link(self):
"""
The foreign key widget should only show the "add related" button if the
user has permission to add that related item.
"""
self.client.force_login(self.adduser)
# The user can't add sections yet, so they shouldn't see the "add section" link.
url = reverse('admin:admin_views_article_add')
add_link_text = 'add_id_section'
response = self.client.get(url)
self.assertNotContains(response, add_link_text)
# Allow the user to add sections too. Now they can see the "add section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('add', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertContains(response, add_link_text)
def test_conditionally_show_change_section_link(self):
"""
The foreign key widget should only show the "change related" button if
the user has permission to change that related item.
"""
def get_change_related(response):
return response.context['adminform'].form.fields['section'].widget.can_change_related
self.client.force_login(self.adduser)
# The user can't change sections yet, so they shouldn't see the "change section" link.
url = reverse('admin:admin_views_article_add')
change_link_text = 'change_id_section'
response = self.client.get(url)
self.assertFalse(get_change_related(response))
self.assertNotContains(response, change_link_text)
# Allow the user to change sections too. Now they can see the "change section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('change', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_change_related(response))
self.assertContains(response, change_link_text)
def test_conditionally_show_delete_section_link(self):
"""
The foreign key widget should only show the "delete related" button if
the user has permission to delete that related item.
"""
def get_delete_related(response):
return response.context['adminform'].form.fields['sub_section'].widget.can_delete_related
self.client.force_login(self.adduser)
# The user can't delete sections yet, so they shouldn't see the "delete section" link.
url = reverse('admin:admin_views_article_add')
delete_link_text = 'delete_id_sub_section'
response = self.client.get(url)
self.assertFalse(get_delete_related(response))
self.assertNotContains(response, delete_link_text)
# Allow the user to delete sections too. Now they can see the "delete section" link.
user = User.objects.get(username='adduser')
perm = get_perm(Section, get_permission_codename('delete', Section._meta))
user.user_permissions.add(perm)
response = self.client.get(url)
self.assertTrue(get_delete_related(response))
self.assertContains(response, delete_link_text)
def test_disabled_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_active = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_disabled_staff_permissions_when_logged_in(self):
self.client.force_login(self.superuser)
superuser = User.objects.get(username='super')
superuser.is_staff = False
superuser.save()
response = self.client.get(self.index_url, follow=True)
self.assertContains(response, 'id="login-form"')
self.assertNotContains(response, 'Log out')
response = self.client.get(reverse('secure_view'), follow=True)
self.assertContains(response, 'id="login-form"')
def test_app_list_permissions(self):
"""
If a user has no module perms, the app list returns a 404.
"""
opts = Article._meta
change_user = User.objects.get(username='changeuser')
permission = get_perm(Article, get_permission_codename('change', opts))
self.client.force_login(self.changeuser)
# the user has no module permissions
change_user.user_permissions.remove(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 404)
# the user now has module permissions
change_user.user_permissions.add(permission)
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(response.status_code, 200)
def test_shortcut_view_only_available_to_staff(self):
"""
Only admin users should be able to use the admin shortcut view.
"""
model_ctype = ContentType.objects.get_for_model(ModelWithStringPrimaryKey)
obj = ModelWithStringPrimaryKey.objects.create(string_pk='foo')
shortcut_url = reverse('admin:view_on_site', args=(model_ctype.pk, obj.pk))
# Not logged in: we should see the login page.
response = self.client.get(shortcut_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
# Logged in? Redirect.
self.client.force_login(self.superuser)
response = self.client.get(shortcut_url, follow=False)
# Can't use self.assertRedirects() because User.get_absolute_url() is silly.
self.assertEqual(response.status_code, 302)
# Domain may depend on contrib.sites tests also run
self.assertRegex(response.url, 'http://(testserver|example.com)/dummy/foo/')
def test_has_module_permission(self):
"""
has_module_permission() returns True for all users who
have any permission for that module (add, change, or delete), so that
the module is displayed on the admin index page.
"""
self.client.force_login(self.superuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(self.index_url)
self.assertContains(response, 'admin_views')
self.assertContains(response, 'Articles')
def test_overriding_has_module_permission(self):
"""
If has_module_permission() always returns False, the module shouldn't
be displayed on the admin index page for any users.
"""
articles = Article._meta.verbose_name_plural.title()
sections = Section._meta.verbose_name_plural.title()
index_url = reverse('admin7:index')
self.client.force_login(self.superuser)
response = self.client.get(index_url)
self.assertContains(response, sections)
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.viewuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.adduser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.changeuser)
response = self.client.get(index_url)
self.assertNotContains(response, 'admin_views')
self.assertNotContains(response, articles)
self.client.logout()
self.client.force_login(self.deleteuser)
response = self.client.get(index_url)
self.assertNotContains(response, articles)
# The app list displays Sections but not Articles as the latter has
# ModelAdmin.has_module_permission() = False.
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin7:app_list', args=('admin_views',)))
self.assertContains(response, sections)
self.assertNotContains(response, articles)
def test_post_save_message_no_forbidden_links_visible(self):
"""
Post-save message shouldn't contain a link to the change form if the
user doesn't have the change permission.
"""
self.client.force_login(self.adduser)
# Emulate Article creation for user with add-only permission.
post_data = {
"title": "Fun & games",
"content": "Some content",
"date_0": "2015-10-31",
"date_1": "16:35:00",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_article_add'), post_data, follow=True)
self.assertContains(
response,
'<li class="success">The article “Fun & games” was added successfully.</li>',
html=True
)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class AdminViewProxyModelPermissionsTests(TestCase):
"""Tests for proxy models permissions in the admin."""
@classmethod
def setUpTestData(cls):
cls.viewuser = User.objects.create_user(username='viewuser', password='secret', is_staff=True)
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
# Setup permissions.
opts = UserProxy._meta
cls.viewuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('view', opts)))
cls.adduser.user_permissions.add(get_perm(UserProxy, get_permission_codename('add', opts)))
cls.changeuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('change', opts)))
cls.deleteuser.user_permissions.add(get_perm(UserProxy, get_permission_codename('delete', opts)))
# UserProxy instances.
cls.user_proxy = UserProxy.objects.create(username='user_proxy', password='secret')
def test_add(self):
self.client.force_login(self.adduser)
url = reverse('admin:admin_views_userproxy_add')
data = {
'username': 'can_add',
'password': 'secret',
'date_joined_0': '2019-01-15',
'date_joined_1': '16:59:10',
}
response = self.client.post(url, data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertTrue(UserProxy.objects.filter(username='can_add').exists())
def test_view(self):
self.client.force_login(self.viewuser)
response = self.client.get(reverse('admin:admin_views_userproxy_changelist'))
self.assertContains(response, '<h1>Select user proxy to view</h1>')
response = self.client.get(reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,)))
self.assertContains(response, '<h1>View user proxy</h1>')
self.assertContains(response, '<div class="readonly">user_proxy</div>')
def test_change(self):
self.client.force_login(self.changeuser)
data = {
'password': self.user_proxy.password,
'username': self.user_proxy.username,
'date_joined_0': self.user_proxy.date_joined.strftime('%Y-%m-%d'),
'date_joined_1': self.user_proxy.date_joined.strftime('%H:%M:%S'),
'first_name': 'first_name',
}
url = reverse('admin:admin_views_userproxy_change', args=(self.user_proxy.pk,))
response = self.client.post(url, data)
self.assertRedirects(response, reverse('admin:admin_views_userproxy_changelist'))
self.assertEqual(UserProxy.objects.get(pk=self.user_proxy.pk).first_name, 'first_name')
def test_delete(self):
self.client.force_login(self.deleteuser)
url = reverse('admin:admin_views_userproxy_delete', args=(self.user_proxy.pk,))
response = self.client.post(url, {'post': 'yes'}, follow=True)
self.assertEqual(response.status_code, 200)
self.assertFalse(UserProxy.objects.filter(pk=self.user_proxy.pk).exists())
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewsNoUrlTest(TestCase):
"""Regression test for #17333"""
@classmethod
def setUpTestData(cls):
# User who can change Reports
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.changeuser.user_permissions.add(get_perm(Report, get_permission_codename('change', Report._meta)))
def test_no_standard_modeladmin_urls(self):
"""Admin index views don't break when user's ModelAdmin removes standard urls"""
self.client.force_login(self.changeuser)
r = self.client.get(reverse('admin:index'))
# we shouldn't get a 500 error caused by a NoReverseMatch
self.assertEqual(r.status_code, 200)
self.client.get(reverse('admin:logout'))
@skipUnlessDBFeature('can_defer_constraint_checks')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewDeletedObjectsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.deleteuser = User.objects.create_user(username='deleteuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.v1 = Villain.objects.create(name='Adam')
cls.v2 = Villain.objects.create(name='Sue')
cls.sv1 = SuperVillain.objects.create(name='Bob')
cls.pl1 = Plot.objects.create(name='World Domination', team_leader=cls.v1, contact=cls.v2)
cls.pl2 = Plot.objects.create(name='World Peace', team_leader=cls.v2, contact=cls.v2)
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
cls.pd1 = PlotDetails.objects.create(details='almost finished', plot=cls.pl1)
cls.sh1 = SecretHideout.objects.create(location='underground bunker', villain=cls.v1)
cls.sh2 = SecretHideout.objects.create(location='floating castle', villain=cls.sv1)
cls.ssh1 = SuperSecretHideout.objects.create(location='super floating castle!', supervillain=cls.sv1)
cls.cy1 = CyclicOne.objects.create(name='I am recursive', two_id=1)
cls.cy2 = CyclicTwo.objects.create(name='I am recursive too', one_id=1)
def setUp(self):
self.client.force_login(self.superuser)
def test_nesting(self):
"""
Objects should be nested to display the relationships that
cause them to be scheduled for deletion.
"""
pattern = re.compile(
r'<li>Plot: <a href="%s">World Domination</a>\s*<ul>\s*'
r'<li>Plot details: <a href="%s">almost finished</a>' % (
reverse('admin:admin_views_plot_change', args=(self.pl1.pk,)),
reverse('admin:admin_views_plotdetails_change', args=(self.pd1.pk,)),
)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertRegex(response.content.decode(), pattern)
def test_cyclic(self):
"""
Cyclic relationships should still cause each object to only be
listed once.
"""
one = '<li>Cyclic one: <a href="%s">I am recursive</a>' % (
reverse('admin:admin_views_cyclicone_change', args=(self.cy1.pk,)),
)
two = '<li>Cyclic two: <a href="%s">I am recursive too</a>' % (
reverse('admin:admin_views_cyclictwo_change', args=(self.cy2.pk,)),
)
response = self.client.get(reverse('admin:admin_views_cyclicone_delete', args=(self.cy1.pk,)))
self.assertContains(response, one, 1)
self.assertContains(response, two, 1)
def test_perms_needed(self):
self.client.logout()
delete_user = User.objects.get(username='deleteuser')
delete_user.user_permissions.add(get_perm(Plot, get_permission_codename('delete', Plot._meta)))
self.client.force_login(self.deleteuser)
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(self.pl1.pk,)))
self.assertContains(response, "your account doesn't have permission to delete the following types of objects")
self.assertContains(response, "<li>plot details</li>")
def test_protected(self):
q = Question.objects.create(question="Why?")
a1 = Answer.objects.create(question=q, answer="Because.")
a2 = Answer.objects.create(question=q, answer="Yes.")
response = self.client.get(reverse('admin:admin_views_question_delete', args=(q.pk,)))
self.assertContains(response, "would require deleting the following protected related objects")
self.assertContains(
response,
'<li>Answer: <a href="%s">Because.</a></li>' % reverse('admin:admin_views_answer_change', args=(a1.pk,))
)
self.assertContains(
response,
'<li>Answer: <a href="%s">Yes.</a></li>' % reverse('admin:admin_views_answer_change', args=(a2.pk,))
)
def test_post_delete_protected(self):
"""
A POST request to delete protected objects should display the page
which says the deletion is prohibited.
"""
q = Question.objects.create(question='Why?')
Answer.objects.create(question=q, answer='Because.')
response = self.client.post(reverse('admin:admin_views_question_delete', args=(q.pk,)), {'post': 'yes'})
self.assertEqual(Question.objects.count(), 1)
self.assertContains(response, "would require deleting the following protected related objects")
def test_restricted(self):
album = Album.objects.create(title='Amaryllis')
song = Song.objects.create(album=album, name='Unity')
response = self.client.get(reverse('admin:admin_views_album_delete', args=(album.pk,)))
self.assertContains(
response,
'would require deleting the following protected related objects',
)
self.assertContains(
response,
'<li>Song: <a href="%s">Unity</a></li>'
% reverse('admin:admin_views_song_change', args=(song.pk,))
)
def test_post_delete_restricted(self):
album = Album.objects.create(title='Amaryllis')
Song.objects.create(album=album, name='Unity')
response = self.client.post(
reverse('admin:admin_views_album_delete', args=(album.pk,)),
{'post': 'yes'},
)
self.assertEqual(Album.objects.count(), 1)
self.assertContains(
response,
'would require deleting the following protected related objects',
)
def test_not_registered(self):
should_contain = """<li>Secret hideout: underground bunker"""
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain, 1)
def test_multiple_fkeys_to_same_model(self):
"""
If a deleted object has two relationships from another model,
both of those should be followed in looking for related
objects to delete.
"""
should_contain = '<li>Plot: <a href="%s">World Domination</a>' % reverse(
'admin:admin_views_plot_change', args=(self.pl1.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v1.pk,)))
self.assertContains(response, should_contain)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain)
def test_multiple_fkeys_to_same_instance(self):
"""
If a deleted object has two relationships pointing to it from
another object, the other object should still only be listed
once.
"""
should_contain = '<li>Plot: <a href="%s">World Peace</a></li>' % reverse(
'admin:admin_views_plot_change', args=(self.pl2.pk,)
)
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.v2.pk,)))
self.assertContains(response, should_contain, 1)
def test_inheritance(self):
"""
In the case of an inherited model, if either the child or
parent-model instance is deleted, both instances are listed
for deletion, as well as any relationships they have.
"""
should_contain = [
'<li>Villain: <a href="%s">Bob</a>' % reverse('admin:admin_views_villain_change', args=(self.sv1.pk,)),
'<li>Super villain: <a href="%s">Bob</a>' % reverse(
'admin:admin_views_supervillain_change', args=(self.sv1.pk,)
),
'<li>Secret hideout: floating castle',
'<li>Super secret hideout: super floating castle!',
]
response = self.client.get(reverse('admin:admin_views_villain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
response = self.client.get(reverse('admin:admin_views_supervillain_delete', args=(self.sv1.pk,)))
for should in should_contain:
self.assertContains(response, should, 1)
def test_generic_relations(self):
"""
If a deleted object has GenericForeignKeys pointing to it,
those objects should be listed for deletion.
"""
plot = self.pl3
tag = FunkyTag.objects.create(content_object=plot, name='hott')
should_contain = '<li>Funky tag: <a href="%s">hott' % reverse(
'admin:admin_views_funkytag_change', args=(tag.id,))
response = self.client.get(reverse('admin:admin_views_plot_delete', args=(plot.pk,)))
self.assertContains(response, should_contain)
def test_generic_relations_with_related_query_name(self):
"""
If a deleted object has GenericForeignKey with
GenericRelation(related_query_name='...') pointing to it, those objects
should be listed for deletion.
"""
bookmark = Bookmark.objects.create(name='djangoproject')
tag = FunkyTag.objects.create(content_object=bookmark, name='django')
tag_url = reverse('admin:admin_views_funkytag_change', args=(tag.id,))
should_contain = '<li>Funky tag: <a href="%s">django' % tag_url
response = self.client.get(reverse('admin:admin_views_bookmark_delete', args=(bookmark.pk,)))
self.assertContains(response, should_contain)
def test_delete_view_uses_get_deleted_objects(self):
"""The delete view uses ModelAdmin.get_deleted_objects()."""
book = Book.objects.create(name='Test Book')
response = self.client.get(reverse('admin2:admin_views_book_delete', args=(book.pk,)))
# BookAdmin.get_deleted_objects() returns custom text.
self.assertContains(response, 'a deletable object')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestGenericRelations(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.v1 = Villain.objects.create(name='Adam')
cls.pl3 = Plot.objects.create(name='Corn Conspiracy', team_leader=cls.v1, contact=cls.v1)
def setUp(self):
self.client.force_login(self.superuser)
def test_generic_content_object_in_list_display(self):
FunkyTag.objects.create(content_object=self.pl3, name='hott')
response = self.client.get(reverse('admin:admin_views_funkytag_changelist'))
self.assertContains(response, "%s</td>" % self.pl3)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewStringPrimaryKeyTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.pk = (
"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890 "
r"""-_.!~*'() ;/?:@&=+$, <>#%" {}|\^[]`"""
)
cls.m1 = ModelWithStringPrimaryKey.objects.create(string_pk=cls.pk)
content_type_pk = ContentType.objects.get_for_model(ModelWithStringPrimaryKey).pk
user_pk = cls.superuser.pk
LogEntry.objects.log_action(user_pk, content_type_pk, cls.pk, cls.pk, 2, change_message='Changed something')
def setUp(self):
self.client.force_login(self.superuser)
def test_get_history_view(self):
"""
Retrieving the history for an object using urlencoded form of primary
key should work.
Refs #12349, #18550.
"""
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_history', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
self.assertContains(response, 'Changed something')
def test_get_change_view(self):
"Retrieving the object using urlencoded form of primary key should work"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_change', args=(self.pk,)))
self.assertContains(response, escape(self.pk))
def test_changelist_to_changeform_link(self):
"Link to the changeform of the object in changelist should use reverse() and be quoted -- #18072"
response = self.client.get(reverse('admin:admin_views_modelwithstringprimarykey_changelist'))
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
pk_final_url = escape(iri_to_uri(quote(self.pk)))
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', pk_final_url)
should_contain = '<th class="field-__str__"><a href="%s">%s</a></th>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_recentactions_link(self):
"The link from the recent actions list referring to the changeform of the object should be quoted"
response = self.client.get(reverse('admin:index'))
link = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(self.pk),))
should_contain = """<a href="%s">%s</a>""" % (escape(link), escape(self.pk))
self.assertContains(response, should_contain)
def test_deleteconfirmation_link(self):
"The link from the delete confirmation page referring back to the changeform of the object should be quoted"
url = reverse('admin:admin_views_modelwithstringprimarykey_delete', args=(quote(self.pk),))
response = self.client.get(url)
# this URL now comes through reverse(), thus url quoting and iri_to_uri encoding
change_url = reverse(
'admin:admin_views_modelwithstringprimarykey_change', args=('__fk__',)
).replace('__fk__', escape(iri_to_uri(quote(self.pk))))
should_contain = '<a href="%s">%s</a>' % (change_url, escape(self.pk))
self.assertContains(response, should_contain)
def test_url_conflicts_with_add(self):
"A model with a primary key that ends with add or is `add` should be visible"
add_model = ModelWithStringPrimaryKey.objects.create(pk="i have something to add")
add_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
add_model2 = ModelWithStringPrimaryKey.objects.create(pk="add")
add_url = reverse('admin:admin_views_modelwithstringprimarykey_add')
change_url = reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(add_model2.pk),))
self.assertNotEqual(add_url, change_url)
def test_url_conflicts_with_delete(self):
"A model with a primary key that ends with delete should be visible"
delete_model = ModelWithStringPrimaryKey(pk="delete")
delete_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(delete_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_url_conflicts_with_history(self):
"A model with a primary key that ends with history should be visible"
history_model = ModelWithStringPrimaryKey(pk="history")
history_model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(history_model.pk),))
)
should_contain = """<h1>Change model with string primary key</h1>"""
self.assertContains(response, should_contain)
def test_shortcut_view_with_escaping(self):
"'View on site should' work properly with char fields"
model = ModelWithStringPrimaryKey(pk='abc_123')
model.save()
response = self.client.get(
reverse('admin:admin_views_modelwithstringprimarykey_change', args=(quote(model.pk),))
)
should_contain = '/%s/" class="viewsitelink">' % model.pk
self.assertContains(response, should_contain)
def test_change_view_history_link(self):
"""Object history button link should work and contain the pk value quoted."""
url = reverse(
'admin:%s_modelwithstringprimarykey_change' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
expected_link = reverse(
'admin:%s_modelwithstringprimarykey_history' % ModelWithStringPrimaryKey._meta.app_label,
args=(quote(self.pk),)
)
self.assertContains(response, '<a href="%s" class="historylink"' % escape(expected_link))
def test_redirect_on_add_view_continue_button(self):
"""As soon as an object is added using "Save and continue editing"
button, the user should be redirected to the object's change_view.
In case primary key is a string containing some special characters
like slash or underscore, these characters must be escaped (see #22266)
"""
response = self.client.post(
reverse('admin:admin_views_modelwithstringprimarykey_add'),
{
'string_pk': '123/history',
"_continue": "1", # Save and continue editing
}
)
self.assertEqual(response.status_code, 302) # temporary redirect
self.assertIn('/123_2Fhistory/', response.headers['location']) # PK is quoted
@override_settings(ROOT_URLCONF='admin_views.urls')
class SecureViewTests(TestCase):
"""
Test behavior of a view protected by the staff_member_required decorator.
"""
def test_secure_view_shows_login_if_not_logged_in(self):
secure_url = reverse('secure_view')
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), secure_url))
response = self.client.get(secure_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.context[REDIRECT_FIELD_NAME], secure_url)
def test_staff_member_required_decorator_works_with_argument(self):
"""
Staff_member_required decorator works with an argument
(redirect_field_name).
"""
secure_url = '/test_admin/admin/secure-view2/'
response = self.client.get(secure_url)
self.assertRedirects(response, '%s?myfield=%s' % (reverse('admin:login'), secure_url))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewUnicodeTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.b1 = Book.objects.create(name='Lærdommer')
cls.p1 = Promo.objects.create(name='<Promo for Lærdommer>', book=cls.b1)
cls.chap1 = Chapter.objects.create(
title='Norske bostaver æøå skaper problemer', content='<p>Svært frustrerende med UnicodeDecodeErro</p>',
book=cls.b1
)
cls.chap2 = Chapter.objects.create(
title='Kjærlighet', content='<p>La kjærligheten til de lidende seire.</p>', book=cls.b1)
cls.chap3 = Chapter.objects.create(title='Kjærlighet', content='<p>Noe innhold</p>', book=cls.b1)
cls.chap4 = ChapterXtra1.objects.create(chap=cls.chap1, xtra='<Xtra(1) Norske bostaver æøå skaper problemer>')
cls.chap5 = ChapterXtra1.objects.create(chap=cls.chap2, xtra='<Xtra(1) Kjærlighet>')
cls.chap6 = ChapterXtra1.objects.create(chap=cls.chap3, xtra='<Xtra(1) Kjærlighet>')
cls.chap7 = ChapterXtra2.objects.create(chap=cls.chap1, xtra='<Xtra(2) Norske bostaver æøå skaper problemer>')
cls.chap8 = ChapterXtra2.objects.create(chap=cls.chap2, xtra='<Xtra(2) Kjærlighet>')
cls.chap9 = ChapterXtra2.objects.create(chap=cls.chap3, xtra='<Xtra(2) Kjærlighet>')
def setUp(self):
self.client.force_login(self.superuser)
def test_unicode_edit(self):
"""
A test to ensure that POST on edit_view handles non-ASCII characters.
"""
post_data = {
"name": "Test lærdommer",
# inline data
"chapter_set-TOTAL_FORMS": "6",
"chapter_set-INITIAL_FORMS": "3",
"chapter_set-MAX_NUM_FORMS": "0",
"chapter_set-0-id": self.chap1.pk,
"chapter_set-0-title": "Norske bostaver æøå skaper problemer",
"chapter_set-0-content": "<p>Svært frustrerende med UnicodeDecodeError</p>",
"chapter_set-1-id": self.chap2.id,
"chapter_set-1-title": "Kjærlighet.",
"chapter_set-1-content": "<p>La kjærligheten til de lidende seire.</p>",
"chapter_set-2-id": self.chap3.id,
"chapter_set-2-title": "Need a title.",
"chapter_set-2-content": "<p>Newest content</p>",
"chapter_set-3-id": "",
"chapter_set-3-title": "",
"chapter_set-3-content": "",
"chapter_set-4-id": "",
"chapter_set-4-title": "",
"chapter_set-4-content": "",
"chapter_set-5-id": "",
"chapter_set-5-title": "",
"chapter_set-5-content": "",
}
response = self.client.post(reverse('admin:admin_views_book_change', args=(self.b1.pk,)), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
def test_unicode_delete(self):
"""
The delete_view handles non-ASCII characters
"""
delete_dict = {'post': 'yes'}
delete_url = reverse('admin:admin_views_book_delete', args=(self.b1.pk,))
response = self.client.get(delete_url)
self.assertEqual(response.status_code, 200)
response = self.client.post(delete_url, delete_dict)
self.assertRedirects(response, reverse('admin:admin_views_book_changelist'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewListEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_inheritance(self):
Podcast.objects.create(name="This Week in Django", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_inheritance_2(self):
Vodcast.objects.create(name="This Week in Django", released=True)
response = self.client.get(reverse('admin:admin_views_vodcast_changelist'))
self.assertEqual(response.status_code, 200)
def test_custom_pk(self):
Language.objects.create(iso='en', name='English', english_name='English')
response = self.client.get(reverse('admin:admin_views_language_changelist'))
self.assertEqual(response.status_code, 200)
def test_changelist_input_html(self):
response = self.client.get(reverse('admin:admin_views_person_changelist'))
# 2 inputs per object(the field and the hidden id field) = 6
# 4 management hidden fields = 4
# 4 action inputs (3 regular checkboxes, 1 checkbox to select all)
# main form submit button = 1
# search field and search submit button = 2
# CSRF field = 1
# field to track 'select all' across paginated views = 1
# 6 + 4 + 4 + 1 + 2 + 1 + 1 = 19 inputs
self.assertContains(response, "<input", count=20)
# 1 select per object = 3 selects
self.assertContains(response, "<select", count=4)
def test_post_messages(self):
# Ticket 12707: Saving inline editable should not show admin
# action warnings
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'),
data, follow=True)
self.assertEqual(len(response.context['messages']), 1)
def test_post_submission(self):
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
# test a filtered page
data = {
"form-TOTAL_FORMS": "2",
"form-INITIAL_FORMS": "2",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"form-0-alive": "checked",
"form-1-id": str(self.per3.pk),
"form-1-gender": "1",
"form-1-alive": "checked",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?gender__exact=1', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
# test a searched page
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per1.pk),
"form-0-gender": "1",
"_save": "Save",
}
self.client.post(reverse('admin:admin_views_person_changelist') + '?q=john', data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
def test_non_field_errors(self):
"""
Non-field errors are displayed for each of the forms in the
changelist's formset.
"""
fd1 = FoodDelivery.objects.create(reference='123', driver='bill', restaurant='thai')
fd2 = FoodDelivery.objects.create(reference='456', driver='bill', restaurant='india')
fd3 = FoodDelivery.objects.create(reference='789', driver='bill', restaurant='pizza')
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "pizza",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
1,
html=True
)
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(fd1.id),
"form-0-reference": "123",
"form-0-driver": "bill",
"form-0-restaurant": "thai",
# Same data as above: Forbidden because of unique_together!
"form-1-id": str(fd2.id),
"form-1-reference": "456",
"form-1-driver": "bill",
"form-1-restaurant": "thai",
# Same data also.
"form-2-id": str(fd3.id),
"form-2-reference": "789",
"form-2-driver": "bill",
"form-2-restaurant": "thai",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_fooddelivery_changelist'), data)
self.assertContains(
response,
'<tr><td colspan="4"><ul class="errorlist nonfield"><li>Food delivery '
'with this Driver and Restaurant already exists.</li></ul></td></tr>',
2,
html=True
)
def test_non_form_errors(self):
# test if non-form errors are handled; ticket #12716
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertContains(response, "Grace is not a Zombie")
def test_non_form_errors_is_errorlist(self):
# test if non-form errors are correctly handled; ticket #12878
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "1",
"form-MAX_NUM_FORMS": "0",
"form-0-id": str(self.per2.pk),
"form-0-alive": "1",
"form-0-gender": "2",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_person_changelist'), data)
non_form_errors = response.context['cl'].formset.non_form_errors()
self.assertIsInstance(non_form_errors, ErrorList)
self.assertEqual(
str(non_form_errors),
str(ErrorList(['Grace is not a Zombie'], error_class='nonform')),
)
def test_list_editable_ordering(self):
collector = Collector.objects.create(id=1, name="Frederick Clegg")
Category.objects.create(id=1, order=1, collector=collector)
Category.objects.create(id=2, order=2, collector=collector)
Category.objects.create(id=3, order=0, collector=collector)
Category.objects.create(id=4, order=0, collector=collector)
# NB: The order values must be changed so that the items are reordered.
data = {
"form-TOTAL_FORMS": "4",
"form-INITIAL_FORMS": "4",
"form-MAX_NUM_FORMS": "0",
"form-0-order": "14",
"form-0-id": "1",
"form-0-collector": "1",
"form-1-order": "13",
"form-1-id": "2",
"form-1-collector": "1",
"form-2-order": "1",
"form-2-id": "3",
"form-2-collector": "1",
"form-3-order": "0",
"form-3-id": "4",
"form-3-collector": "1",
# The form processing understands this as a list_editable "Save"
# and not an action "Go".
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_category_changelist'), data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
def test_list_editable_pagination(self):
"""
Pagination works for list_editable items.
"""
UnorderedObject.objects.create(id=1, name='Unordered object #1')
UnorderedObject.objects.create(id=2, name='Unordered object #2')
UnorderedObject.objects.create(id=3, name='Unordered object #3')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist'))
self.assertContains(response, 'Unordered object #3')
self.assertContains(response, 'Unordered object #2')
self.assertNotContains(response, 'Unordered object #1')
response = self.client.get(reverse('admin:admin_views_unorderedobject_changelist') + '?p=2')
self.assertNotContains(response, 'Unordered object #3')
self.assertNotContains(response, 'Unordered object #2')
self.assertContains(response, 'Unordered object #1')
def test_list_editable_action_submit(self):
# List editable changes should not be executed if the action "Go" button is
# used to submit the form.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": "1",
"form-1-gender": "2",
"form-1-id": "2",
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": "3",
"index": "0",
"_selected_action": ['3'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, True)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 1)
def test_list_editable_action_choices(self):
# List editable changes should be executed if the "Save" button is
# used to submit the form - any action choices should be ignored.
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "0",
"form-0-gender": "1",
"form-0-id": str(self.per1.pk),
"form-1-gender": "2",
"form-1-id": str(self.per2.pk),
"form-2-alive": "checked",
"form-2-gender": "1",
"form-2-id": str(self.per3.pk),
"_save": "Save",
"_selected_action": ['1'],
"action": ['', 'delete_selected'],
}
self.client.post(reverse('admin:admin_views_person_changelist'), data)
self.assertIs(Person.objects.get(name="John Mauchly").alive, False)
self.assertEqual(Person.objects.get(name="Grace Hopper").gender, 2)
def test_list_editable_popup(self):
"""
Fields should not be list-editable in popups.
"""
response = self.client.get(reverse('admin:admin_views_person_changelist'))
self.assertNotEqual(response.context['cl'].list_editable, ())
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?%s' % IS_POPUP_VAR)
self.assertEqual(response.context['cl'].list_editable, ())
def test_pk_hidden_fields(self):
"""
hidden pk fields aren't displayed in the table body and their
corresponding human-readable value is displayed instead. The hidden pk
fields are displayed but separately (not in the table) and only once.
"""
story1 = Story.objects.create(title='The adventures of Guido', content='Once upon a time in Djangoland...')
story2 = Story.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
response = self.client.get(reverse('admin:admin_views_story_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<td class="field-id">%d</td>' % story1.id, 1)
self.assertContains(response, '<td class="field-id">%d</td>' % story2.id, 1)
def test_pk_hidden_fields_with_list_display_links(self):
""" Similarly as test_pk_hidden_fields, but when the hidden pk fields are
referenced in list_display_links.
Refs #12475.
"""
story1 = OtherStory.objects.create(
title='The adventures of Guido',
content='Once upon a time in Djangoland...',
)
story2 = OtherStory.objects.create(
title='Crouching Tiger, Hidden Python',
content='The Python was sneaking into...',
)
link1 = reverse('admin:admin_views_otherstory_change', args=(story1.pk,))
link2 = reverse('admin:admin_views_otherstory_change', args=(story2.pk,))
response = self.client.get(reverse('admin:admin_views_otherstory_changelist'))
# Only one hidden field, in a separate place than the table.
self.assertContains(response, 'id="id_form-0-id"', 1)
self.assertContains(response, 'id="id_form-1-id"', 1)
self.assertContains(
response,
'<div class="hiddenfields">\n'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'<input type="hidden" name="form-1-id" value="%d" id="id_form-1-id">\n</div>'
% (story2.id, story1.id),
html=True
)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link1, story1.id), 1)
self.assertContains(response, '<th class="field-id"><a href="%s">%d</a></th>' % (link2, story2.id), 1)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSearchTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='John Doe', gender=1)
Person.objects.create(name='John O"Hara', gender=1)
Person.objects.create(name="John O'Hara", gender=1)
cls.t1 = Recommender.objects.create()
cls.t2 = Recommendation.objects.create(the_recommender=cls.t1)
cls.t3 = Recommender.objects.create()
cls.t4 = Recommendation.objects.create(the_recommender=cls.t3)
cls.tt1 = TitleTranslation.objects.create(title=cls.t1, text='Bar')
cls.tt2 = TitleTranslation.objects.create(title=cls.t2, text='Foo')
cls.tt3 = TitleTranslation.objects.create(title=cls.t3, text='Few')
cls.tt4 = TitleTranslation.objects.create(title=cls.t4, text='Bas')
def setUp(self):
self.client.force_login(self.superuser)
def test_search_on_sibling_models(self):
"A search that mentions sibling models"
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned 1 object
self.assertContains(response, "\n1 recommendation\n")
def test_with_fk_to_field(self):
"""
The to_field GET parameter is preserved when a search is performed.
Refs #10918.
"""
response = self.client.get(reverse('admin:auth_user_changelist') + '?q=joe&%s=id' % TO_FIELD_VAR)
self.assertContains(response, "\n1 user\n")
self.assertContains(response, '<input type="hidden" name="%s" value="id">' % TO_FIELD_VAR, html=True)
def test_exact_matches(self):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
# confirm the search returned one object
self.assertContains(response, "\n1 recommendation\n")
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=ba')
# confirm the search returned zero objects
self.assertContains(response, "\n0 recommendations\n")
def test_beginning_matches(self):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
# confirm the search returned one object
self.assertContains(response, "\n1 person\n")
self.assertContains(response, "Guido")
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=uido')
# confirm the search returned zero objects
self.assertContains(response, "\n0 persons\n")
self.assertNotContains(response, "Guido")
def test_pluggable_search(self):
PluggableSearchPerson.objects.create(name="Bob", age=10)
PluggableSearchPerson.objects.create(name="Amy", age=20)
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=Bob')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Bob")
response = self.client.get(reverse('admin:admin_views_pluggablesearchperson_changelist') + '?q=20')
# confirm the search returned one object
self.assertContains(response, "\n1 pluggable search person\n")
self.assertContains(response, "Amy")
def test_reset_link(self):
"""
Test presence of reset link in search bar ("1 result (_x total_)").
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
# + 1 for total count
with self.assertNumQueries(5):
response = self.client.get(reverse('admin:admin_views_person_changelist') + '?q=Gui')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">6 total</a>)</span>""",
html=True
)
def test_no_total_count(self):
"""
#8408 -- "Show all" should be displayed instead of the total count if
ModelAdmin.show_full_result_count is False.
"""
# 1 query for session + 1 for fetching user
# + 1 for filtered result + 1 for filtered count
with self.assertNumQueries(4):
response = self.client.get(reverse('admin:admin_views_recommendation_changelist') + '?q=bar')
self.assertContains(
response,
"""<span class="small quiet">1 result (<a href="?">Show all</a>)</span>""",
html=True
)
self.assertTrue(response.context['cl'].show_admin_actions)
def test_search_with_spaces(self):
url = reverse('admin:admin_views_person_changelist') + '?q=%s'
tests = [
('"John Doe"', 1),
("'John Doe'", 1),
('John Doe', 0),
('"John Doe" John', 1),
("'John Doe' John", 1),
("John Doe John", 0),
('"John Do"', 1),
("'John Do'", 1),
("'John O\'Hara'", 0),
("'John O\\'Hara'", 1),
('"John O\"Hara"', 0),
('"John O\\"Hara"', 1),
]
for search, hits in tests:
with self.subTest(search=search):
response = self.client.get(url % search)
self.assertContains(response, '\n%s person' % hits)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInheritedInlinesTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_inline(self):
"""
Inline models which inherit from a common parent are correctly handled.
"""
foo_user = "foo username"
bar_user = "bar username"
name_re = re.compile(b'name="(.*?)"')
# test the add case
response = self.client.get(reverse('admin:admin_views_persona_add'))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
# test the add case
post_data = {
"name": "Test Name",
# inline data
"accounts-TOTAL_FORMS": "1",
"accounts-INITIAL_FORMS": "0",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": foo_user,
"accounts-2-TOTAL_FORMS": "1",
"accounts-2-INITIAL_FORMS": "0",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": bar_user,
}
response = self.client.post(reverse('admin:admin_views_persona_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
persona_id = Persona.objects.all()[0].id
foo_id = FooAccount.objects.all()[0].id
bar_id = BarAccount.objects.all()[0].id
# test the edit case
response = self.client.get(reverse('admin:admin_views_persona_change', args=(persona_id,)))
names = name_re.findall(response.content)
# make sure we have no duplicate HTML names
self.assertEqual(len(names), len(set(names)))
post_data = {
"name": "Test Name",
"accounts-TOTAL_FORMS": "2",
"accounts-INITIAL_FORMS": "1",
"accounts-MAX_NUM_FORMS": "0",
"accounts-0-username": "%s-1" % foo_user,
"accounts-0-account_ptr": str(foo_id),
"accounts-0-persona": str(persona_id),
"accounts-2-TOTAL_FORMS": "2",
"accounts-2-INITIAL_FORMS": "1",
"accounts-2-MAX_NUM_FORMS": "0",
"accounts-2-0-username": "%s-1" % bar_user,
"accounts-2-0-account_ptr": str(bar_id),
"accounts-2-0-persona": str(persona_id),
}
response = self.client.post(reverse('admin:admin_views_persona_change', args=(persona_id,)), post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Persona.objects.count(), 1)
self.assertEqual(FooAccount.objects.count(), 1)
self.assertEqual(BarAccount.objects.count(), 1)
self.assertEqual(FooAccount.objects.all()[0].username, "%s-1" % foo_user)
self.assertEqual(BarAccount.objects.all()[0].username, "%s-1" % bar_user)
self.assertEqual(Persona.objects.all()[0].accounts.count(), 2)
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestCustomChangeList(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_custom_changelist(self):
"""
Validate that a custom ChangeList class can be used (#9749)
"""
# Insert some data
post_data = {"name": "First Gadget"}
response = self.client.post(reverse('admin:admin_views_gadget_add'), post_data)
self.assertEqual(response.status_code, 302) # redirect somewhere
# Hit the page once to get messages out of the queue message list
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
# Data is still not visible on the page
response = self.client.get(reverse('admin:admin_views_gadget_changelist'))
self.assertNotContains(response, 'First Gadget')
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestInlineNotEditable(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_GET_parent_add(self):
"""
InlineModelAdmin broken?
"""
response = self.client.get(reverse('admin:admin_views_parent_add'))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomQuerysetTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.pks = [EmptyModel.objects.create().id for i in range(3)]
def setUp(self):
self.client.force_login(self.superuser)
self.super_login = {
REDIRECT_FIELD_NAME: reverse('admin:index'),
'username': 'super',
'password': 'secret',
}
def test_changelist_view(self):
response = self.client.get(reverse('admin:admin_views_emptymodel_changelist'))
for i in self.pks:
if i > 1:
self.assertContains(response, 'Primary key = %s' % i)
else:
self.assertNotContains(response, 'Primary key = %s' % i)
def test_changelist_view_count_queries(self):
# create 2 Person objects
Person.objects.create(name='person1', gender=1)
Person.objects.create(name='person2', gender=2)
changelist_url = reverse('admin:admin_views_person_changelist')
# 5 queries are expected: 1 for the session, 1 for the user,
# 2 for the counts and 1 for the objects on the page
with self.assertNumQueries(5):
resp = self.client.get(changelist_url)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'q': 'not_in_name'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 0 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 0 selected')
with self.assertNumQueries(5):
extra = {'q': 'person'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 2 selected')
self.assertEqual(resp.context['selection_note_all'], 'All 2 selected')
with self.assertNumQueries(5):
extra = {'gender__exact': '1'}
resp = self.client.get(changelist_url, extra)
self.assertEqual(resp.context['selection_note'], '0 of 1 selected')
self.assertEqual(resp.context['selection_note_all'], '1 selected')
def test_change_view(self):
for i in self.pks:
url = reverse('admin:admin_views_emptymodel_change', args=(i,))
response = self.client.get(url, follow=True)
if i > 1:
self.assertEqual(response.status_code, 200)
else:
self.assertRedirects(response, reverse('admin:index'))
self.assertEqual(
[m.message for m in response.context['messages']],
['empty model with ID “1” doesn’t exist. Perhaps it was deleted?']
)
def test_add_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(CoverLetter.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"author": "Candidate, Best",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_coverletter_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = CoverLetter.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'Candidate, Best</a>” was added successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(ShortMessage.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"content": "What's this SMS thing?",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_shortmessage_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name
sm = ShortMessage.objects.all()[0]
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_add_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
self.assertEqual(Telegram.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "Urgent telegram",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name
pk = Telegram.objects.all()[0].pk
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Urgent telegram</a>” was added successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(pk,)), html=True
)
# model has no __str__ method
self.assertEqual(Paper.objects.count(), 0)
# Emulate model instance creation via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_add'), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name
p = Paper.objects.all()[0]
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was added successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_edit_model_modeladmin_defer_qs(self):
# Test for #14529. defer() is used in ModelAdmin.get_queryset()
# model has __str__ method
cl = CoverLetter.objects.create(author="John Doe")
self.assertEqual(CoverLetter.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_coverletter_change', args=(cl.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"author": "John Doe II",
"_save": "Save",
}
url = reverse('admin:admin_views_coverletter_change', args=(cl.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(CoverLetter.objects.count(), 1)
# Message should contain non-ugly model verbose name. Instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The cover letter “<a href="%s">'
'John Doe II</a>” was changed successfully.</li>' %
reverse('admin:admin_views_coverletter_change', args=(cl.pk,)), html=True
)
# model has no __str__ method
sm = ShortMessage.objects.create(content="This is expensive")
self.assertEqual(ShortMessage.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"content": "Too expensive",
"_save": "Save",
}
url = reverse('admin:admin_views_shortmessage_change', args=(sm.pk,))
response = self.client.post(url, post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(ShortMessage.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The short message “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_shortmessage_change', args=(sm.pk,)), sm), html=True
)
def test_edit_model_modeladmin_only_qs(self):
# Test for #14529. only() is used in ModelAdmin.get_queryset()
# model has __str__ method
t = Telegram.objects.create(title="First Telegram")
self.assertEqual(Telegram.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_telegram_change', args=(t.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "Telegram without typo",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_telegram_change', args=(t.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Telegram.objects.count(), 1)
# Message should contain non-ugly model verbose name. The instance
# representation is set by model's __str__()
self.assertContains(
response,
'<li class="success">The telegram “<a href="%s">'
'Telegram without typo</a>” was changed successfully.</li>' %
reverse('admin:admin_views_telegram_change', args=(t.pk,)), html=True
)
# model has no __str__ method
p = Paper.objects.create(title="My Paper Title")
self.assertEqual(Paper.objects.count(), 1)
response = self.client.get(reverse('admin:admin_views_paper_change', args=(p.pk,)))
self.assertEqual(response.status_code, 200)
# Emulate model instance edit via the admin
post_data = {
"title": "My Modified Paper Title",
"_save": "Save",
}
response = self.client.post(reverse('admin:admin_views_paper_change', args=(p.pk,)), post_data, follow=True)
self.assertEqual(response.status_code, 200)
self.assertEqual(Paper.objects.count(), 1)
# Message should contain non-ugly model verbose name. The ugly(!)
# instance representation is set by __str__().
self.assertContains(
response,
'<li class="success">The paper “<a href="%s">'
'%s</a>” was changed successfully.</li>' %
(reverse('admin:admin_views_paper_change', args=(p.pk,)), p), html=True
)
def test_history_view_custom_qs(self):
"""
Custom querysets are considered for the admin history view.
"""
self.client.post(reverse('admin:login'), self.super_login)
FilteredManager.objects.create(pk=1)
FilteredManager.objects.create(pk=2)
response = self.client.get(reverse('admin:admin_views_filteredmanager_changelist'))
self.assertContains(response, "PK=1")
self.assertContains(response, "PK=2")
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(1,))).status_code, 200
)
self.assertEqual(
self.client.get(reverse('admin:admin_views_filteredmanager_history', args=(2,))).status_code, 200
)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineFileUploadTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
file1 = tempfile.NamedTemporaryFile(suffix=".file1")
file1.write(b'a' * (2 ** 21))
filename = file1.name
file1.close()
cls.gallery = Gallery.objects.create(name='Test Gallery')
cls.picture = Picture.objects.create(
name='Test Picture',
image=filename,
gallery=cls.gallery,
)
def setUp(self):
self.client.force_login(self.superuser)
def test_form_has_multipart_enctype(self):
response = self.client.get(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,))
)
self.assertIs(response.context['has_file_field'], True)
self.assertContains(response, MULTIPART_ENCTYPE)
def test_inline_file_upload_edit_validation_error_post(self):
"""
Inline file uploads correctly display prior data (#10002).
"""
post_data = {
"name": "Test Gallery",
"pictures-TOTAL_FORMS": "2",
"pictures-INITIAL_FORMS": "1",
"pictures-MAX_NUM_FORMS": "0",
"pictures-0-id": str(self.picture.id),
"pictures-0-gallery": str(self.gallery.id),
"pictures-0-name": "Test Picture",
"pictures-0-image": "",
"pictures-1-id": "",
"pictures-1-gallery": str(self.gallery.id),
"pictures-1-name": "Test Picture 2",
"pictures-1-image": "",
}
response = self.client.post(
reverse('admin:admin_views_gallery_change', args=(self.gallery.id,)), post_data
)
self.assertContains(response, b"Currently")
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminInlineTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.collector = Collector.objects.create(pk=1, name='John Fowles')
def setUp(self):
self.post_data = {
"name": "Test Name",
"widget_set-TOTAL_FORMS": "3",
"widget_set-INITIAL_FORMS": "0",
"widget_set-MAX_NUM_FORMS": "0",
"widget_set-0-id": "",
"widget_set-0-owner": "1",
"widget_set-0-name": "",
"widget_set-1-id": "",
"widget_set-1-owner": "1",
"widget_set-1-name": "",
"widget_set-2-id": "",
"widget_set-2-owner": "1",
"widget_set-2-name": "",
"doohickey_set-TOTAL_FORMS": "3",
"doohickey_set-INITIAL_FORMS": "0",
"doohickey_set-MAX_NUM_FORMS": "0",
"doohickey_set-0-owner": "1",
"doohickey_set-0-code": "",
"doohickey_set-0-name": "",
"doohickey_set-1-owner": "1",
"doohickey_set-1-code": "",
"doohickey_set-1-name": "",
"doohickey_set-2-owner": "1",
"doohickey_set-2-code": "",
"doohickey_set-2-name": "",
"grommet_set-TOTAL_FORMS": "3",
"grommet_set-INITIAL_FORMS": "0",
"grommet_set-MAX_NUM_FORMS": "0",
"grommet_set-0-code": "",
"grommet_set-0-owner": "1",
"grommet_set-0-name": "",
"grommet_set-1-code": "",
"grommet_set-1-owner": "1",
"grommet_set-1-name": "",
"grommet_set-2-code": "",
"grommet_set-2-owner": "1",
"grommet_set-2-name": "",
"whatsit_set-TOTAL_FORMS": "3",
"whatsit_set-INITIAL_FORMS": "0",
"whatsit_set-MAX_NUM_FORMS": "0",
"whatsit_set-0-owner": "1",
"whatsit_set-0-index": "",
"whatsit_set-0-name": "",
"whatsit_set-1-owner": "1",
"whatsit_set-1-index": "",
"whatsit_set-1-name": "",
"whatsit_set-2-owner": "1",
"whatsit_set-2-index": "",
"whatsit_set-2-name": "",
"fancydoodad_set-TOTAL_FORMS": "3",
"fancydoodad_set-INITIAL_FORMS": "0",
"fancydoodad_set-MAX_NUM_FORMS": "0",
"fancydoodad_set-0-doodad_ptr": "",
"fancydoodad_set-0-owner": "1",
"fancydoodad_set-0-name": "",
"fancydoodad_set-0-expensive": "on",
"fancydoodad_set-1-doodad_ptr": "",
"fancydoodad_set-1-owner": "1",
"fancydoodad_set-1-name": "",
"fancydoodad_set-1-expensive": "on",
"fancydoodad_set-2-doodad_ptr": "",
"fancydoodad_set-2-owner": "1",
"fancydoodad_set-2-name": "",
"fancydoodad_set-2-expensive": "on",
"category_set-TOTAL_FORMS": "3",
"category_set-INITIAL_FORMS": "0",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "",
"category_set-0-id": "",
"category_set-0-collector": "1",
"category_set-1-order": "",
"category_set-1-id": "",
"category_set-1-collector": "1",
"category_set-2-order": "",
"category_set-2-id": "",
"category_set-2-collector": "1",
}
self.client.force_login(self.superuser)
def test_simple_inline(self):
"A simple model can be saved as inlines"
# First add a new inline
self.post_data['widget_set-0-name'] = "Widget 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
widget_id = Widget.objects.all()[0].id
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="widget_set-0-id"')
# No file or image fields, no enctype on the forms
self.assertIs(response.context['has_file_field'], False)
self.assertNotContains(response, MULTIPART_ENCTYPE)
# Now resave that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1")
# Now modify that inline
self.post_data['widget_set-INITIAL_FORMS'] = "1"
self.post_data['widget_set-0-id'] = str(widget_id)
self.post_data['widget_set-0-name'] = "Widget 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Widget.objects.count(), 1)
self.assertEqual(Widget.objects.all()[0].name, "Widget 1 Updated")
def test_explicit_autofield_inline(self):
"A model with an explicit autofield primary key can be saved as inlines. Regression for #8093"
# First add a new inline
self.post_data['grommet_set-0-name'] = "Grommet 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="grommet_set-0-code"')
# Now resave that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1")
# Now modify that inline
self.post_data['grommet_set-INITIAL_FORMS'] = "1"
self.post_data['grommet_set-0-code'] = str(Grommet.objects.all()[0].code)
self.post_data['grommet_set-0-name'] = "Grommet 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Grommet.objects.count(), 1)
self.assertEqual(Grommet.objects.all()[0].name, "Grommet 1 Updated")
def test_char_pk_inline(self):
"A model with a character PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="doohickey_set-0-code"')
# Now resave that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1")
# Now modify that inline
self.post_data['doohickey_set-INITIAL_FORMS'] = "1"
self.post_data['doohickey_set-0-code'] = "DH1"
self.post_data['doohickey_set-0-name'] = "Doohickey 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(DooHickey.objects.count(), 1)
self.assertEqual(DooHickey.objects.all()[0].name, "Doohickey 1 Updated")
def test_integer_pk_inline(self):
"A model with an integer PK can be saved as inlines. Regression for #10992"
# First add a new inline
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="whatsit_set-0-index"')
# Now resave that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1")
# Now modify that inline
self.post_data['whatsit_set-INITIAL_FORMS'] = "1"
self.post_data['whatsit_set-0-index'] = "42"
self.post_data['whatsit_set-0-name'] = "Whatsit 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Whatsit.objects.count(), 1)
self.assertEqual(Whatsit.objects.all()[0].name, "Whatsit 1 Updated")
def test_inherited_inline(self):
"An inherited model can be saved as inlines. Regression for #11042"
# First add a new inline
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
doodad_pk = FancyDoodad.objects.all()[0].pk
# The PK link exists on the rendered form
response = self.client.get(collector_url)
self.assertContains(response, 'name="fancydoodad_set-0-doodad_ptr"')
# Now resave that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1")
# Now modify that inline
self.post_data['fancydoodad_set-INITIAL_FORMS'] = "1"
self.post_data['fancydoodad_set-0-doodad_ptr'] = str(doodad_pk)
self.post_data['fancydoodad_set-0-name'] = "Fancy Doodad 1 Updated"
response = self.client.post(collector_url, self.post_data)
self.assertEqual(response.status_code, 302)
self.assertEqual(FancyDoodad.objects.count(), 1)
self.assertEqual(FancyDoodad.objects.all()[0].name, "Fancy Doodad 1 Updated")
def test_ordered_inline(self):
"""
An inline with an editable ordering fields is updated correctly.
"""
# Create some objects with an initial ordering
Category.objects.create(id=1, order=1, collector=self.collector)
Category.objects.create(id=2, order=2, collector=self.collector)
Category.objects.create(id=3, order=0, collector=self.collector)
Category.objects.create(id=4, order=0, collector=self.collector)
# NB: The order values must be changed so that the items are reordered.
self.post_data.update({
"name": "Frederick Clegg",
"category_set-TOTAL_FORMS": "7",
"category_set-INITIAL_FORMS": "4",
"category_set-MAX_NUM_FORMS": "0",
"category_set-0-order": "14",
"category_set-0-id": "1",
"category_set-0-collector": "1",
"category_set-1-order": "13",
"category_set-1-id": "2",
"category_set-1-collector": "1",
"category_set-2-order": "1",
"category_set-2-id": "3",
"category_set-2-collector": "1",
"category_set-3-order": "0",
"category_set-3-id": "4",
"category_set-3-collector": "1",
"category_set-4-order": "",
"category_set-4-id": "",
"category_set-4-collector": "1",
"category_set-5-order": "",
"category_set-5-id": "",
"category_set-5-collector": "1",
"category_set-6-order": "",
"category_set-6-id": "",
"category_set-6-collector": "1",
})
collector_url = reverse('admin:admin_views_collector_change', args=(self.collector.pk,))
response = self.client.post(collector_url, self.post_data)
# Successful post will redirect
self.assertEqual(response.status_code, 302)
# The order values have been applied to the right objects
self.assertEqual(self.collector.category_set.count(), 4)
self.assertEqual(Category.objects.get(id=1).order, 14)
self.assertEqual(Category.objects.get(id=2).order, 13)
self.assertEqual(Category.objects.get(id=3).order, 1)
self.assertEqual(Category.objects.get(id=4).order, 0)
@override_settings(ROOT_URLCONF='admin_views.urls')
class NeverCacheTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
def setUp(self):
self.client.force_login(self.superuser)
def test_admin_index(self):
"Check the never-cache status of the main index"
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_app_index(self):
"Check the never-cache status of an application index"
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertEqual(get_max_age(response), 0)
def test_model_index(self):
"Check the never-cache status of a model index"
response = self.client.get(reverse('admin:admin_views_fabric_changelist'))
self.assertEqual(get_max_age(response), 0)
def test_model_add(self):
"Check the never-cache status of a model add page"
response = self.client.get(reverse('admin:admin_views_fabric_add'))
self.assertEqual(get_max_age(response), 0)
def test_model_view(self):
"Check the never-cache status of a model edit page"
response = self.client.get(reverse('admin:admin_views_section_change', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_history(self):
"Check the never-cache status of a model history page"
response = self.client.get(reverse('admin:admin_views_section_history', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_model_delete(self):
"Check the never-cache status of a model delete page"
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertEqual(get_max_age(response), 0)
def test_login(self):
"Check the never-cache status of login views"
self.client.logout()
response = self.client.get(reverse('admin:index'))
self.assertEqual(get_max_age(response), 0)
def test_logout(self):
"Check the never-cache status of logout view"
response = self.client.get(reverse('admin:logout'))
self.assertEqual(get_max_age(response), 0)
def test_password_change(self):
"Check the never-cache status of the password change view"
self.client.logout()
response = self.client.get(reverse('admin:password_change'))
self.assertIsNone(get_max_age(response))
def test_password_change_done(self):
"Check the never-cache status of the password change done view"
response = self.client.get(reverse('admin:password_change_done'))
self.assertIsNone(get_max_age(response))
def test_JS_i18n(self):
"Check the never-cache status of the JavaScript i18n view"
response = self.client.get(reverse('admin:jsi18n'))
self.assertIsNone(get_max_age(response))
@override_settings(ROOT_URLCONF='admin_views.urls')
class PrePopulatedTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_prepopulated_on(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_add'))
self.assertContains(response, ""id": "#id_slug"")
self.assertContains(response, ""dependency_ids": ["#id_title"]")
self.assertContains(response, ""id": "#id_prepopulatedsubpost_set-0-subslug"")
def test_prepopulated_off(self):
response = self.client.get(reverse('admin:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, "A Long Title")
self.assertNotContains(response, ""id": "#id_slug"")
self.assertNotContains(response, ""dependency_ids": ["#id_title"]")
self.assertNotContains(
response,
""id": "#id_prepopulatedsubpost_set-0-subslug""
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_prepopulated_maxlength_localized(self):
"""
Regression test for #15938: if USE_THOUSAND_SEPARATOR is set, make sure
that maxLength (in the JavaScript) is rendered without separators.
"""
response = self.client.get(reverse('admin:admin_views_prepopulatedpostlargeslug_add'))
self.assertContains(response, ""maxLength": 1000") # instead of 1,000
def test_view_only_add_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'
which is present in the add view, even if the
ModelAdmin.has_change_permission() returns False.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_add'))
self.assertContains(response, 'data-prepopulated-fields=')
self.assertContains(response, '"id": "#id_slug"')
def test_view_only_change_form(self):
"""
PrePopulatedPostReadOnlyAdmin.prepopulated_fields includes 'slug'. That
doesn't break a view-only change view.
"""
response = self.client.get(reverse('admin7:admin_views_prepopulatedpost_change', args=(self.p1.pk,)))
self.assertContains(response, 'data-prepopulated-fields="[]"')
self.assertContains(response, '<div class="readonly">%s</div>' % self.p1.slug)
@override_settings(ROOT_URLCONF='admin_views.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_views'] + AdminSeleniumTestCase.available_apps
def setUp(self):
self.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
self.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def test_login_button_centered(self):
from selenium.webdriver.common.by import By
self.selenium.get(self.live_server_url + reverse('admin:login'))
button = self.selenium.find_element(By.CSS_SELECTOR, '.submit-row input')
offset_left = button.get_property('offsetLeft')
offset_right = (
button.get_property('offsetParent').get_property('offsetWidth') -
(offset_left + button.get_property('offsetWidth'))
)
# Use assertAlmostEqual to avoid pixel rounding errors.
self.assertAlmostEqual(offset_left, offset_right, delta=3)
def test_prepopulated_fields(self):
"""
The JavaScript-automated prepopulated fields work with the main form
and with stacked and tabular inlines.
Refs #13068, #9264, #9983, #9784.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_mainprepopulated_add'))
self.wait_for('.select2')
# Main form ----------------------------------------------------------
self.selenium.find_element(By.ID, 'id_pubdate').send_keys('2012-02-18')
self.select_option('#id_status', 'option two')
self.selenium.find_element(By.ID, 'id_name').send_keys(' the mAin nÀMë and it\'s awεšomeıııİ')
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
slug3 = self.selenium.find_element(By.ID, 'id_slug3').get_attribute('value')
self.assertEqual(slug1, 'the-main-name-and-its-awesomeiiii-2012-02-18')
self.assertEqual(slug2, 'option-two-the-main-name-and-its-awesomeiiii')
self.assertEqual(slug3, 'the-main-n\xe0m\xeb-and-its-aw\u03b5\u0161ome\u0131\u0131\u0131i')
# Stacked inlines with fieldsets -------------------------------------
# Initial inline
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-pubdate').send_keys('2011-12-17')
self.select_option('#id_relatedprepopulated_set-0-status', 'option one')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-name').send_keys(
' here is a sŤāÇkeð inline ! '
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'here-is-a-stacked-inline-2011-12-17')
self.assertEqual(slug2, 'option-one-here-is-a-stacked-inline')
initial_select2_inputs = self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')
# Inline formsets have empty/invisible forms.
# Only the 4 visible select2 inputs are initialized.
num_initial_select2_inputs = len(initial_select2_inputs)
self.assertEqual(num_initial_select2_inputs, 4)
# Add an inline
self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[0].click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 2
)
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-pubdate').send_keys('1999-01-25')
self.select_option('#id_relatedprepopulated_set-1-status', 'option two')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-name').send_keys(
' now you haVe anöther sŤāÇkeð inline with a very ... '
'loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooog text... '
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-1-slug2').get_attribute('value')
# 50 characters maximum for slug1 field
self.assertEqual(slug1, 'now-you-have-another-stacked-inline-with-a-very-lo')
# 60 characters maximum for slug2 field
self.assertEqual(slug2, 'option-two-now-you-have-another-stacked-inline-with-a-very-l')
# Tabular inlines ----------------------------------------------------
# Initial inline
element = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-status')
self.selenium.execute_script('window.scrollTo(0, %s);' % element.location['y'])
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-pubdate').send_keys('1234-12-07')
self.select_option('#id_relatedprepopulated_set-2-0-status', 'option two')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-name').send_keys(
'And now, with a tÃbűlaŘ inline !!!'
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-0-slug2').get_attribute('value')
self.assertEqual(slug1, 'and-now-with-a-tabular-inline-1234-12-07')
self.assertEqual(slug2, 'option-two-and-now-with-a-tabular-inline')
# Add an inline
# Button may be outside the browser frame.
element = self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[1]
self.selenium.execute_script('window.scrollTo(0, %s);' % element.location['y'])
element.click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 4
)
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-pubdate').send_keys('1981-08-22')
self.select_option('#id_relatedprepopulated_set-2-1-status', 'option one')
self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-name').send_keys(
r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters'
)
slug1 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_relatedprepopulated_set-2-1-slug2').get_attribute('value')
self.assertEqual(slug1, 'tabular-inline-with-ignored-characters-1981-08-22')
self.assertEqual(slug2, 'option-one-tabular-inline-with-ignored-characters')
# Add an inline without an initial inline.
# The button is outside of the browser frame.
self.selenium.execute_script("window.scrollTo(0, document.body.scrollHeight);")
self.selenium.find_elements(By.LINK_TEXT, 'Add another Related prepopulated')[2].click()
self.assertEqual(
len(self.selenium.find_elements(By.CLASS_NAME, 'select2-selection')),
num_initial_select2_inputs + 6
)
# Stacked Inlines without fieldsets ----------------------------------
# Initial inline.
row_id = 'id_relatedprepopulated_set-4-0-'
self.selenium.find_element(By.ID, f'{row_id}pubdate').send_keys('2011-12-12')
self.select_option(f'#{row_id}status', 'option one')
self.selenium.find_element(By.ID, f'{row_id}name').send_keys(' sŤāÇkeð inline ! ')
slug1 = self.selenium.find_element(By.ID, f'{row_id}slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, f'{row_id}slug2').get_attribute('value')
self.assertEqual(slug1, 'stacked-inline-2011-12-12')
self.assertEqual(slug2, 'option-one')
# Add inline.
self.selenium.find_elements(
By.LINK_TEXT,
'Add another Related prepopulated',
)[3].click()
row_id = 'id_relatedprepopulated_set-4-1-'
self.selenium.find_element(By.ID, f'{row_id}pubdate').send_keys('1999-01-20')
self.select_option(f'#{row_id}status', 'option two')
self.selenium.find_element(By.ID, f'{row_id}name').send_keys(
' now you haVe anöther sŤāÇkeð inline with a very loooong '
)
slug1 = self.selenium.find_element(By.ID, f'{row_id}slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, f'{row_id}slug2').get_attribute('value')
self.assertEqual(slug1, 'now-you-have-another-stacked-inline-with-a-very-lo')
self.assertEqual(slug2, 'option-two')
# Save and check that everything is properly stored in the database
with self.wait_page_loaded():
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.assertEqual(MainPrepopulated.objects.all().count(), 1)
MainPrepopulated.objects.get(
name=' the mAin nÀMë and it\'s awεšomeıııİ',
pubdate='2012-02-18',
status='option two',
slug1='the-main-name-and-its-awesomeiiii-2012-02-18',
slug2='option-two-the-main-name-and-its-awesomeiiii',
slug3='the-main-nàmë-and-its-awεšomeıııi',
)
self.assertEqual(RelatedPrepopulated.objects.all().count(), 6)
RelatedPrepopulated.objects.get(
name=' here is a sŤāÇkeð inline ! ',
pubdate='2011-12-17',
status='option one',
slug1='here-is-a-stacked-inline-2011-12-17',
slug2='option-one-here-is-a-stacked-inline',
)
RelatedPrepopulated.objects.get(
# 75 characters in name field
name=' now you haVe anöther sŤāÇkeð inline with a very ... loooooooooooooooooo',
pubdate='1999-01-25',
status='option two',
slug1='now-you-have-another-stacked-inline-with-a-very-lo',
slug2='option-two-now-you-have-another-stacked-inline-with-a-very-l',
)
RelatedPrepopulated.objects.get(
name='And now, with a tÃbűlaŘ inline !!!',
pubdate='1234-12-07',
status='option two',
slug1='and-now-with-a-tabular-inline-1234-12-07',
slug2='option-two-and-now-with-a-tabular-inline',
)
RelatedPrepopulated.objects.get(
name=r'tÃbűlaŘ inline with ignored ;"&*^\%$#@-/`~ characters',
pubdate='1981-08-22',
status='option one',
slug1='tabular-inline-with-ignored-characters-1981-08-22',
slug2='option-one-tabular-inline-with-ignored-characters',
)
def test_populate_existing_object(self):
"""
The prepopulation works for existing objects too, as long as
the original field is empty (#19082).
"""
from selenium.webdriver.common.by import By
# Slugs are empty to start with.
item = MainPrepopulated.objects.create(
name=' this is the mAin nÀMë',
pubdate='2012-02-18',
status='option two',
slug1='',
slug2='',
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
object_url = self.live_server_url + reverse('admin:admin_views_mainprepopulated_change', args=(item.id,))
self.selenium.get(object_url)
self.selenium.find_element(By.ID, 'id_name').send_keys(' the best')
# The slugs got prepopulated since they were originally empty
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
# Save the object
with self.wait_page_loaded():
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.get(object_url)
self.selenium.find_element(By.ID, 'id_name').send_keys(' hello')
# The slugs got prepopulated didn't change since they were originally not empty
slug1 = self.selenium.find_element(By.ID, 'id_slug1').get_attribute('value')
slug2 = self.selenium.find_element(By.ID, 'id_slug2').get_attribute('value')
self.assertEqual(slug1, 'this-is-the-main-name-the-best-2012-02-18')
self.assertEqual(slug2, 'option-two-this-is-the-main-name-the-best')
def test_collapsible_fieldset(self):
"""
The 'collapse' class in fieldsets definition allows to
show/hide the appropriate field section.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_add'))
self.assertFalse(self.selenium.find_element(By.ID, 'id_title').is_displayed())
self.selenium.find_elements(By.LINK_TEXT, 'Show')[0].click()
self.assertTrue(self.selenium.find_element(By.ID, 'id_title').is_displayed())
self.assertEqual(self.selenium.find_element(By.ID, 'fieldsetcollapser0').text, "Hide")
def test_selectbox_height_collapsible_fieldset(self):
from selenium.webdriver.common.by import By
self.admin_login(
username='super',
password='secret',
login_url=reverse('admin7:index'),
)
url = self.live_server_url + reverse('admin7:admin_views_pizza_add')
self.selenium.get(url)
self.selenium.find_elements(By.LINK_TEXT, 'Show')[0].click()
filter_box = self.selenium.find_element(By.ID, 'id_toppings_filter')
from_box = self.selenium.find_element(By.ID, 'id_toppings_from')
to_box = self.selenium.find_element(By.ID, 'id_toppings_to')
self.assertEqual(
to_box.get_property('offsetHeight'),
(
filter_box.get_property('offsetHeight') +
from_box.get_property('offsetHeight')
),
)
def test_selectbox_height_not_collapsible_fieldset(self):
from selenium.webdriver.common.by import By
self.admin_login(
username='super',
password='secret',
login_url=reverse('admin7:index'),
)
url = self.live_server_url + reverse('admin7:admin_views_question_add')
self.selenium.get(url)
filter_box = self.selenium.find_element(By.ID, 'id_related_questions_filter')
from_box = self.selenium.find_element(By.ID, 'id_related_questions_from')
to_box = self.selenium.find_element(By.ID, 'id_related_questions_to')
self.assertEqual(
to_box.get_property('offsetHeight'),
(
filter_box.get_property('offsetHeight') +
from_box.get_property('offsetHeight')
),
)
def test_first_field_focus(self):
"""JavaScript-assisted auto-focus on first usable form field."""
from selenium.webdriver.common.by import By
# First form field has a single widget
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_picture_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element(By.ID, 'id_name')
)
# First form field has a MultiWidget
with self.wait_page_loaded():
self.selenium.get(self.live_server_url + reverse('admin:admin_views_reservation_add'))
self.assertEqual(
self.selenium.switch_to.active_element,
self.selenium.find_element(By.ID, 'id_start_date_0')
)
def test_cancel_delete_confirmation(self):
"Cancelling the deletion of an object takes the user back one page."
from selenium.webdriver.common.by import By
pizza = Pizza.objects.create(name="Double Cheese")
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element(By.CLASS_NAME, 'deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element(By.CLASS_NAME, 'cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
def test_cancel_delete_related_confirmation(self):
"""
Cancelling the deletion of an object with relations takes the user back
one page.
"""
from selenium.webdriver.common.by import By
pizza = Pizza.objects.create(name="Double Cheese")
topping1 = Topping.objects.create(name="Cheddar")
topping2 = Topping.objects.create(name="Mozzarella")
pizza.toppings.add(topping1, topping2)
url = reverse('admin:admin_views_pizza_change', args=(pizza.id,))
full_url = self.live_server_url + url
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(full_url)
self.selenium.find_element(By.CLASS_NAME, 'deletelink').click()
# Click 'cancel' on the delete page.
self.selenium.find_element(By.CLASS_NAME, 'cancel-link').click()
# Wait until we're back on the change page.
self.wait_for_text('#content h1', 'Change pizza')
self.assertEqual(self.selenium.current_url, full_url)
self.assertEqual(Pizza.objects.count(), 1)
self.assertEqual(Topping.objects.count(), 2)
def test_list_editable_popups(self):
"""
list_editable foreign keys have add/change popups.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
s1 = Section.objects.create(name='Test section')
Article.objects.create(
title='foo',
content='<p>Middle content</p>',
date=datetime.datetime(2008, 3, 18, 11, 54, 58),
section=s1,
)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_article_changelist'))
# Change popup
self.selenium.find_element(By.ID, 'change_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Change section')
name_input = self.selenium.find_element(By.ID, 'id_name')
name_input.clear()
name_input.send_keys('<i>edited section</i>')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# Hide sidebar.
toggle_button = self.selenium.find_element(By.CSS_SELECTOR, '#toggle-nav-sidebar')
toggle_button.click()
select = Select(self.selenium.find_element(By.ID, 'id_form-0-section'))
self.assertEqual(select.first_selected_option.text, '<i>edited section</i>')
# Rendered select2 input.
select2_display = self.selenium.find_element(By.CLASS_NAME, 'select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\n<i>edited section</i>')
# Add popup
self.selenium.find_element(By.ID, 'add_id_form-0-section').click()
self.wait_for_and_switch_to_popup()
self.wait_for_text('#content h1', 'Add section')
self.selenium.find_element(By.ID, 'id_name').send_keys('new section')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_form-0-section'))
self.assertEqual(select.first_selected_option.text, 'new section')
select2_display = self.selenium.find_element(By.CLASS_NAME, 'select2-selection__rendered')
# Clear button (×\n) is included in text.
self.assertEqual(select2_display.text, '×\nnew section')
def test_inline_uuid_pk_edit_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'change_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
self.assertEqual(select.first_selected_option.text, str(parent.id))
self.assertEqual(select.first_selected_option.get_attribute('value'), str(parent.id))
def test_inline_uuid_pk_add_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
self.selenium.get(self.live_server_url + reverse('admin:admin_views_relatedwithuuidpkmodel_add'))
self.selenium.find_element(By.ID, 'add_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
uuid_id = str(ParentWithUUIDPK.objects.first().id)
self.assertEqual(select.first_selected_option.text, uuid_id)
self.assertEqual(select.first_selected_option.get_attribute('value'), uuid_id)
def test_inline_uuid_pk_delete_with_popup(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//input[@value="Yes, I’m sure"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
select = Select(self.selenium.find_element(By.ID, 'id_parent'))
self.assertEqual(ParentWithUUIDPK.objects.count(), 0)
self.assertEqual(select.first_selected_option.text, '---------')
self.assertEqual(select.first_selected_option.get_attribute('value'), '')
def test_inline_with_popup_cancel_delete(self):
"""Clicking ""No, take me back" on a delete popup closes the window."""
from selenium.webdriver.common.by import By
parent = ParentWithUUIDPK.objects.create(title='test')
related_with_parent = RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_change', args=(related_with_parent.id,))
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'delete_id_parent').click()
self.wait_for_and_switch_to_popup()
self.selenium.find_element(By.XPATH, '//a[text()="No, take me back"]').click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
self.assertEqual(len(self.selenium.window_handles), 1)
def test_list_editable_raw_id_fields(self):
from selenium.webdriver.common.by import By
parent = ParentWithUUIDPK.objects.create(title='test')
parent2 = ParentWithUUIDPK.objects.create(title='test2')
RelatedWithUUIDPKModel.objects.create(parent=parent)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
change_url = reverse('admin:admin_views_relatedwithuuidpkmodel_changelist', current_app=site2.name)
self.selenium.get(self.live_server_url + change_url)
self.selenium.find_element(By.ID, 'lookup_id_form-0-parent').click()
self.wait_for_and_switch_to_popup()
# Select "parent2" in the popup.
self.selenium.find_element(By.LINK_TEXT, str(parent2.pk)).click()
self.selenium.switch_to.window(self.selenium.window_handles[0])
# The newly selected pk should appear in the raw id input.
value = self.selenium.find_element(By.ID, 'id_form-0-parent').get_attribute('value')
self.assertEqual(value, str(parent2.pk))
def test_input_element_font(self):
"""
Browsers' default stylesheets override the font of inputs. The admin
adds additional CSS to handle this.
"""
from selenium.webdriver.common.by import By
self.selenium.get(self.live_server_url + reverse('admin:login'))
element = self.selenium.find_element(By.ID, 'id_username')
# Some browsers quotes the fonts, some don't.
fonts = [
font.strip().strip('"')
for font in element.value_of_css_property('font-family').split(',')
]
self.assertEqual(
fonts,
['Roboto', 'Lucida Grande', 'Verdana', 'Arial', 'sans-serif'],
)
def test_search_input_filtered_page(self):
from selenium.webdriver.common.by import By
Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
Person.objects.create(name='Grace Hopper', gender=1, alive=False)
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
person_url = reverse('admin:admin_views_person_changelist') + '?q=Gui'
self.selenium.get(self.live_server_url + person_url)
self.assertGreater(
self.selenium.find_element(By.ID, 'searchbar').rect['width'],
50,
)
def test_related_popup_index(self):
"""
Create a chain of 'self' related objects via popups.
"""
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
add_url = reverse('admin:admin_views_box_add', current_app=site.name)
self.selenium.get(self.live_server_url + add_url)
base_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup()
popup_window_test = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=3)
popup_window_test2 = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test2')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=4)
self.selenium.find_element(By.ID, 'id_title').send_keys('test3')
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(popup_window_test2)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test3").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(popup_window_test)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test2").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.selenium.switch_to.window(base_window)
select = Select(self.selenium.find_element(By.ID, 'id_next_box'))
next_box_id = str(Box.objects.get(title="test").id)
self.assertEqual(select.first_selected_option.get_attribute('value'), next_box_id)
def test_related_popup_incorrect_close(self):
"""
Cleanup child popups when closing a parent popup.
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret', login_url=reverse('admin:index'))
add_url = reverse('admin:admin_views_box_add', current_app=site.name)
self.selenium.get(self.live_server_url + add_url)
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup()
test_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=3)
test2_window = self.selenium.current_window_handle
self.selenium.find_element(By.ID, 'id_title').send_keys('test2')
self.selenium.find_element(By.ID, 'add_id_next_box').click()
self.wait_for_and_switch_to_popup(num_windows=4)
self.assertEqual(len(self.selenium.window_handles), 4)
self.selenium.switch_to.window(test2_window)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.wait_until(lambda d: len(d.window_handles) == 2, 1)
self.assertEqual(len(self.selenium.window_handles), 2)
# Close final popup to clean up test.
self.selenium.switch_to.window(test_window)
self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
self.wait_until(lambda d: len(d.window_handles) == 1, 1)
self.selenium.switch_to.window(self.selenium.window_handles[-1])
@override_settings(ROOT_URLCONF='admin_views.urls')
class ReadonlyTest(AdminFieldExtractionMixin, TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_readonly_get(self):
response = self.client.get(reverse('admin:admin_views_post_add'))
self.assertNotContains(response, 'name="posted"')
# 3 fields + 2 submit buttons + 5 inline management form fields, + 2
# hidden fields for inlines + 1 field for the inline + 2 empty form
self.assertContains(response, "<input", count=16)
self.assertContains(response, formats.localize(datetime.date.today()))
self.assertContains(response, "<label>Awesomeness level:</label>")
self.assertContains(response, "Very awesome.")
self.assertContains(response, "Unknown coolness.")
self.assertContains(response, "foo")
# Multiline text in a readonly field gets <br> tags
self.assertContains(response, 'Multiline<br>test<br>string')
self.assertContains(response, '<div class="readonly">Multiline<br>html<br>content</div>', html=True)
self.assertContains(response, 'InlineMultiline<br>test<br>string')
self.assertContains(response, formats.localize(datetime.date.today() - datetime.timedelta(days=7)))
self.assertContains(response, '<div class="form-row field-coolness">')
self.assertContains(response, '<div class="form-row field-awesomeness_level">')
self.assertContains(response, '<div class="form-row field-posted">')
self.assertContains(response, '<div class="form-row field-value">')
self.assertContains(response, '<div class="form-row">')
self.assertContains(response, '<div class="help">', 3)
self.assertContains(
response,
'<div class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the content (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
self.assertContains(
response,
'<div class="help">Some help text for the date (with Unicode ŠĐĆŽćžšđ)</div>',
html=True
)
p = Post.objects.create(title="I worked on readonly_fields", content="Its good stuff")
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
self.assertContains(response, "%d amount of cool" % p.pk)
def test_readonly_text_field(self):
p = Post.objects.create(
title="Readonly test", content="test",
readonly_content='test\r\n\r\ntest\r\n\r\ntest\r\n\r\ntest',
)
Link.objects.create(
url="http://www.djangoproject.com", post=p,
readonly_link_content="test\r\nlink",
)
response = self.client.get(reverse('admin:admin_views_post_change', args=(p.pk,)))
# Checking readonly field.
self.assertContains(response, 'test<br><br>test<br><br>test<br><br>test')
# Checking readonly field in inline.
self.assertContains(response, 'test<br>link')
def test_readonly_post(self):
data = {
"title": "Django Got Readonly Fields",
"content": "This is an incredible development.",
"link_set-TOTAL_FORMS": "1",
"link_set-INITIAL_FORMS": "0",
"link_set-MAX_NUM_FORMS": "0",
}
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 1)
p = Post.objects.get()
self.assertEqual(p.posted, datetime.date.today())
data["posted"] = "10-8-1990" # some date that's not today
response = self.client.post(reverse('admin:admin_views_post_add'), data)
self.assertEqual(response.status_code, 302)
self.assertEqual(Post.objects.count(), 2)
p = Post.objects.order_by('-id')[0]
self.assertEqual(p.posted, datetime.date.today())
def test_readonly_manytomany(self):
"Regression test for #13004"
response = self.client.get(reverse('admin:admin_views_pizza_add'))
self.assertEqual(response.status_code, 200)
def test_user_password_change_limited_queryset(self):
su = User.objects.filter(is_superuser=True)[0]
response = self.client.get(reverse('admin2:auth_user_password_change', args=(su.pk,)))
self.assertEqual(response.status_code, 404)
def test_change_form_renders_correct_null_choice_value(self):
"""
Regression test for #17911.
"""
choice = Choice.objects.create(choice=None)
response = self.client.get(reverse('admin:admin_views_choice_change', args=(choice.pk,)))
self.assertContains(response, '<div class="readonly">No opinion</div>', html=True)
def _test_readonly_foreignkey_links(self, admin_site):
"""
ForeignKey readonly fields render as links if the target model is
registered in admin.
"""
chapter = Chapter.objects.create(
title='Chapter 1',
content='content',
book=Book.objects.create(name='Book 1'),
)
language = Language.objects.create(iso='_40', name='Test')
obj = ReadOnlyRelatedField.objects.create(
chapter=chapter,
language=language,
user=self.superuser,
)
response = self.client.get(
reverse(f'{admin_site}:admin_views_readonlyrelatedfield_change', args=(obj.pk,)),
)
# Related ForeignKey object registered in admin.
user_url = reverse(f'{admin_site}:auth_user_change', args=(self.superuser.pk,))
self.assertContains(
response,
'<div class="readonly"><a href="%s">super</a></div>' % user_url,
html=True,
)
# Related ForeignKey with the string primary key registered in admin.
language_url = reverse(
f'{admin_site}:admin_views_language_change',
args=(quote(language.pk),),
)
self.assertContains(
response,
'<div class="readonly"><a href="%s">_40</a></div>' % language_url,
html=True,
)
# Related ForeignKey object not registered in admin.
self.assertContains(response, '<div class="readonly">Chapter 1</div>', html=True)
def test_readonly_foreignkey_links_default_admin_site(self):
self._test_readonly_foreignkey_links('admin')
def test_readonly_foreignkey_links_custom_admin_site(self):
self._test_readonly_foreignkey_links('namespaced_admin')
def test_readonly_manytomany_backwards_ref(self):
"""
Regression test for #16433 - backwards references for related objects
broke if the related field is read-only due to the help_text attribute
"""
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_topping_add'))
self.assertEqual(response.status_code, 200)
def test_readonly_manytomany_forwards_ref(self):
topping = Topping.objects.create(name='Salami')
pizza = Pizza.objects.create(name='Americano')
pizza.toppings.add(topping)
response = self.client.get(reverse('admin:admin_views_pizza_change', args=(pizza.pk,)))
self.assertContains(response, '<label>Toppings:</label>', html=True)
self.assertContains(response, '<div class="readonly">Salami</div>', html=True)
def test_readonly_onetoone_backwards_ref(self):
"""
Can reference a reverse OneToOneField in ModelAdmin.readonly_fields.
"""
v1 = Villain.objects.create(name='Adam')
pl = Plot.objects.create(name='Test Plot', team_leader=v1, contact=v1)
pd = PlotDetails.objects.create(details='Brand New Plot', plot=pl)
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
pd_url = reverse('admin:admin_views_plotdetails_change', args=(pd.pk,))
self.assertEqual(field.contents(), '<a href="%s">Brand New Plot</a>' % pd_url)
# The reverse relation also works if the OneToOneField is null.
pd.plot = None
pd.save()
response = self.client.get(reverse('admin:admin_views_plotproxy_change', args=(pl.pk,)))
field = self.get_admin_readonly_field(response, 'plotdetails')
self.assertEqual(field.contents(), '-') # default empty value
def test_readonly_field_overrides(self):
"""
Regression test for #22087 - ModelForm Meta overrides are ignored by
AdminReadonlyField
"""
p = FieldOverridePost.objects.create(title="Test Post", content="Test Content")
response = self.client.get(reverse('admin:admin_views_fieldoverridepost_change', args=(p.pk,)))
self.assertContains(response, '<div class="help">Overridden help text for the date</div>')
self.assertContains(response, '<label for="id_public">Overridden public label:</label>', html=True)
self.assertNotContains(response, 'Some help text for the date (with Unicode ŠĐĆŽćžšđ)')
def test_correct_autoescaping(self):
"""
Make sure that non-field readonly elements are properly autoescaped (#24461)
"""
section = Section.objects.create(name='<a>evil</a>')
response = self.client.get(reverse('admin:admin_views_section_change', args=(section.pk,)))
self.assertNotContains(response, "<a>evil</a>", status_code=200)
self.assertContains(response, "<a>evil</a>", status_code=200)
def test_label_suffix_translated(self):
pizza = Pizza.objects.create(name='Americano')
url = reverse('admin:admin_views_pizza_change', args=(pizza.pk,))
with self.settings(LANGUAGE_CODE='fr'):
response = self.client.get(url)
self.assertContains(response, '<label>Toppings\u00A0:</label>', html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class LimitChoicesToInAdminTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to_as_callable(self):
"""Test for ticket 2445 changes to admin."""
threepwood = Character.objects.create(
username='threepwood',
last_action=datetime.datetime.today() + datetime.timedelta(days=1),
)
marley = Character.objects.create(
username='marley',
last_action=datetime.datetime.today() - datetime.timedelta(days=1),
)
response = self.client.get(reverse('admin:admin_views_stumpjoke_add'))
# The allowed option should appear twice; the limited option should not appear.
self.assertContains(response, threepwood.username, count=2)
self.assertNotContains(response, marley.username)
@override_settings(ROOT_URLCONF='admin_views.urls')
class RawIdFieldsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_limit_choices_to(self):
"""Regression test for 14880"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True,
leader=actor,
country="England")
Inquisition.objects.create(expected=False,
leader=actor,
country="Spain")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_inquisition"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step also tests integers, strings and booleans in the
# lookup query string; in model we define inquisition field to have a
# limit_choices_to option that includes a filter on a string field
# (inquisition__actor__name), a filter on an integer field
# (inquisition__actor__age), and a filter on a boolean field
# (inquisition__expected).
response2 = self.client.get(popup_url)
self.assertContains(response2, "Spain")
self.assertNotContains(response2, "England")
def test_limit_choices_to_isnull_false(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant0"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=0 gets parsed correctly from the
# lookup query string; in model we define defendant0 field to have a
# limit_choices_to option that includes "actor__title__isnull=False".
response2 = self.client.get(popup_url)
self.assertContains(response2, "Kilbraken")
self.assertNotContains(response2, "Palin")
def test_limit_choices_to_isnull_true(self):
"""Regression test for 20182"""
Actor.objects.create(name="Palin", age=27)
Actor.objects.create(name="Kilbraken", age=50, title="Judge")
response = self.client.get(reverse('admin:admin_views_sketch_add'))
# Find the link
m = re.search(br'<a href="([^"]*)"[^>]* id="lookup_id_defendant1"', response.content)
self.assertTrue(m) # Got a match
popup_url = m[1].decode().replace('&', '&')
# Handle relative links
popup_url = urljoin(response.request['PATH_INFO'], popup_url)
# Get the popup and verify the correct objects show up in the resulting
# page. This step tests field__isnull=1 gets parsed correctly from the
# lookup query string; in model we define defendant1 field to have a
# limit_choices_to option that includes "actor__title__isnull=True".
response2 = self.client.get(popup_url)
self.assertNotContains(response2, "Kilbraken")
self.assertContains(response2, "Palin")
def test_list_display_method_same_name_as_reverse_accessor(self):
"""
Should be able to use a ModelAdmin method in list_display that has the
same name as a reverse model field ("sketch" in this case).
"""
actor = Actor.objects.create(name="Palin", age=27)
Inquisition.objects.create(expected=True, leader=actor, country="England")
response = self.client.get(reverse('admin:admin_views_inquisition_changelist'))
self.assertContains(response, 'list-display-sketch')
@override_settings(ROOT_URLCONF='admin_views.urls')
class UserAdminTest(TestCase):
"""
Tests user CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.adduser = User.objects.create_user(username='adduser', password='secret', is_staff=True)
cls.changeuser = User.objects.create_user(username='changeuser', password='secret', is_staff=True)
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
cls.per1 = Person.objects.create(name='John Mauchly', gender=1, alive=True)
cls.per2 = Person.objects.create(name='Grace Hopper', gender=1, alive=False)
cls.per3 = Person.objects.create(name='Guido van Rossum', gender=1, alive=True)
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
})
new_user = User.objects.get(username='newuser')
self.assertRedirects(response, reverse('admin:auth_user_change', args=(new_user.pk,)))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_save_continue_editing_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_continue': '1',
})
new_user = User.objects.get(username='newuser')
new_user_url = reverse('admin:auth_user_change', args=(new_user.pk,))
self.assertRedirects(response, new_user_url, fetch_redirect_response=False)
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
response = self.client.get(new_user_url)
self.assertContains(
response,
'<li class="success">The user “<a href="%s">'
'%s</a>” was added successfully. You may edit it again below.</li>'
% (new_user_url, new_user),
html=True,
)
def test_password_mismatch(self):
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'mismatch',
})
self.assertEqual(response.status_code, 200)
self.assertFormError(response, 'adminform', 'password', [])
self.assertFormError(response, 'adminform', 'password2', ['The two password fields didn’t match.'])
def test_user_fk_add_popup(self):
"""User addition through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_add'))
self.assertContains(response, 'class="related-widget-wrapper-link add-related" id="add_id_owner"')
response = self.client.get(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(reverse('admin:auth_user_add') + '?%s=1' % IS_POPUP_VAR, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
def test_user_fk_change_popup(self):
"""User change through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_change', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_change', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertNotContains(response, 'name="_continue"')
self.assertNotContains(response, 'name="_addanother"')
data = {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
IS_POPUP_VAR: '1',
'_save': '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"obj": "newuser"')
self.assertContains(response, '"action": "change"')
def test_user_fk_delete_popup(self):
"""User deletion through a FK popup should return the appropriate JavaScript response."""
response = self.client.get(reverse('admin:admin_views_album_add'))
self.assertContains(response, reverse('admin:auth_user_delete', args=('__fk__',)))
self.assertContains(response, 'class="related-widget-wrapper-link change-related" id="change_id_owner"')
user = User.objects.get(username='changeuser')
url = reverse('admin:auth_user_delete', args=(user.pk,)) + '?%s=1' % IS_POPUP_VAR
response = self.client.get(url)
self.assertEqual(response.status_code, 200)
data = {
'post': 'yes',
IS_POPUP_VAR: '1',
}
response = self.client.post(url, data, follow=True)
self.assertContains(response, '"action": "delete"')
def test_save_add_another_button(self):
user_count = User.objects.count()
response = self.client.post(reverse('admin:auth_user_add'), {
'username': 'newuser',
'password1': 'newpassword',
'password2': 'newpassword',
'_addanother': '1',
})
new_user = User.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_user_add'))
self.assertEqual(User.objects.count(), user_count + 1)
self.assertTrue(new_user.has_usable_password())
def test_user_permission_performance(self):
u = User.objects.all()[0]
# Don't depend on a warm cache, see #17377.
ContentType.objects.clear_cache()
with self.assertNumQueries(10):
response = self.client.get(reverse('admin:auth_user_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
def test_form_url_present_in_context(self):
u = User.objects.all()[0]
response = self.client.get(reverse('admin3:auth_user_password_change', args=(u.pk,)))
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context['form_url'], 'pony')
@override_settings(ROOT_URLCONF='admin_views.urls')
class GroupAdminTest(TestCase):
"""
Tests group CRUD functionality.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_save_button(self):
group_count = Group.objects.count()
response = self.client.post(reverse('admin:auth_group_add'), {
'name': 'newgroup',
})
Group.objects.order_by('-id')[0]
self.assertRedirects(response, reverse('admin:auth_group_changelist'))
self.assertEqual(Group.objects.count(), group_count + 1)
def test_group_permission_performance(self):
g = Group.objects.create(name="test_group")
# Ensure no queries are skipped due to cached content type for Group.
ContentType.objects.clear_cache()
with self.assertNumQueries(8):
response = self.client.get(reverse('admin:auth_group_change', args=(g.pk,)))
self.assertEqual(response.status_code, 200)
@override_settings(ROOT_URLCONF='admin_views.urls')
class CSSTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = Section.objects.create(name='Test section')
cls.a1 = Article.objects.create(
content='<p>Middle content</p>', date=datetime.datetime(2008, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a2 = Article.objects.create(
content='<p>Oldest content</p>', date=datetime.datetime(2000, 3, 18, 11, 54, 58), section=cls.s1
)
cls.a3 = Article.objects.create(
content='<p>Newest content</p>', date=datetime.datetime(2009, 3, 18, 11, 54, 58), section=cls.s1
)
cls.p1 = PrePopulatedPost.objects.create(title='A Long Title', published=True, slug='a-long-title')
def setUp(self):
self.client.force_login(self.superuser)
def test_field_prefix_css_classes(self):
"""
Fields have a CSS class name with a 'field-' prefix.
"""
response = self.client.get(reverse('admin:admin_views_post_add'))
# The main form
self.assertContains(response, 'class="form-row field-title"')
self.assertContains(response, 'class="form-row field-content"')
self.assertContains(response, 'class="form-row field-public"')
self.assertContains(response, 'class="form-row field-awesomeness_level"')
self.assertContains(response, 'class="form-row field-coolness"')
self.assertContains(response, 'class="form-row field-value"')
self.assertContains(response, 'class="form-row"') # The lambda function
# The tabular inline
self.assertContains(response, '<td class="field-url">')
self.assertContains(response, '<td class="field-posted">')
def test_index_css_classes(self):
"""
CSS class names are used for each app and model on the admin index
pages (#17050).
"""
# General index page
response = self.client.get(reverse('admin:index'))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
# App index page
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<div class="app-admin_views module')
self.assertContains(response, '<tr class="model-actor">')
self.assertContains(response, '<tr class="model-album">')
def test_app_model_in_form_body_class(self):
"""
Ensure app and model tag are correctly read by change_form template
"""
response = self.client.get(reverse('admin:admin_views_section_add'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_list_body_class(self):
"""
Ensure app and model tag are correctly read by change_list template
"""
response = self.client.get(reverse('admin:admin_views_section_changelist'))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_delete_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by delete_confirmation
template
"""
response = self.client.get(reverse('admin:admin_views_section_delete', args=(self.s1.pk,)))
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_app_model_in_app_index_body_class(self):
"""
Ensure app and model tag are correctly read by app_index template
"""
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertContains(response, '<body class=" dashboard app-admin_views')
def test_app_model_in_delete_selected_confirmation_body_class(self):
"""
Ensure app and model tag are correctly read by
delete_selected_confirmation template
"""
action_data = {
ACTION_CHECKBOX_NAME: [self.s1.pk],
'action': 'delete_selected',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_section_changelist'), action_data)
self.assertContains(response, '<body class=" app-admin_views model-section ')
def test_changelist_field_classes(self):
"""
Cells of the change list table should contain the field name in their class attribute
Refs #11195.
"""
Podcast.objects.create(name="Django Dose", release_date=datetime.date.today())
response = self.client.get(reverse('admin:admin_views_podcast_changelist'))
self.assertContains(response, '<th class="field-name">')
self.assertContains(response, '<td class="field-release_date nowrap">')
self.assertContains(response, '<td class="action-checkbox">')
try:
import docutils
except ImportError:
docutils = None
@unittest.skipUnless(docutils, "no docutils installed.")
@override_settings(ROOT_URLCONF='admin_views.urls')
@modify_settings(INSTALLED_APPS={'append': ['django.contrib.admindocs', 'django.contrib.flatpages']})
class AdminDocsTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_tags(self):
response = self.client.get(reverse('django-admindocs-tags'))
# The builtin tag group exists
self.assertContains(response, "<h2>Built-in tags</h2>", count=2, html=True)
# A builtin tag exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-autoescape">autoescape</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-autoescape">autoescape</a></li>', html=True)
# An app tag exists in both the index and detail
self.assertContains(response, '<h3 id="flatpages-get_flatpages">get_flatpages</h3>', html=True)
self.assertContains(response, '<li><a href="#flatpages-get_flatpages">get_flatpages</a></li>', html=True)
# The admin list tag group exists
self.assertContains(response, "<h2>admin_list</h2>", count=2, html=True)
# An admin list tag exists in both the index and detail
self.assertContains(response, '<h3 id="admin_list-admin_actions">admin_actions</h3>', html=True)
self.assertContains(response, '<li><a href="#admin_list-admin_actions">admin_actions</a></li>', html=True)
def test_filters(self):
response = self.client.get(reverse('django-admindocs-filters'))
# The builtin filter group exists
self.assertContains(response, "<h2>Built-in filters</h2>", count=2, html=True)
# A builtin filter exists in both the index and detail
self.assertContains(response, '<h3 id="built_in-add">add</h3>', html=True)
self.assertContains(response, '<li><a href="#built_in-add">add</a></li>', html=True)
@override_settings(
ROOT_URLCONF='admin_views.urls',
TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}],
)
class ValidXHTMLTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_lang_name_present(self):
with translation.override(None):
response = self.client.get(reverse('admin:app_list', args=('admin_views',)))
self.assertNotContains(response, ' lang=""')
self.assertNotContains(response, ' xml:lang=""')
@override_settings(ROOT_URLCONF='admin_views.urls', USE_THOUSAND_SEPARATOR=True)
class DateHierarchyTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def assert_non_localized_year(self, response, year):
"""
The year is not localized with USE_THOUSAND_SEPARATOR (#15234).
"""
self.assertNotContains(response, formats.number_format(year))
def assert_contains_year_link(self, response, date):
self.assertContains(response, '?release_date__year=%d"' % date.year)
def assert_contains_month_link(self, response, date):
self.assertContains(
response, '?release_date__month=%d&release_date__year=%d"' % (
date.month, date.year))
def assert_contains_day_link(self, response, date):
self.assertContains(
response, '?release_date__day=%d&'
'release_date__month=%d&release_date__year=%d"' % (
date.day, date.month, date.year))
def test_empty(self):
"""
No date hierarchy links display with empty changelist.
"""
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
self.assertNotContains(response, 'release_date__year=')
self.assertNotContains(response, 'release_date__month=')
self.assertNotContains(response, 'release_date__day=')
def test_single(self):
"""
Single day-level date hierarchy appears for single object.
"""
DATE = datetime.date(2000, 6, 30)
Podcast.objects.create(release_date=DATE)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
self.assert_contains_day_link(response, DATE)
self.assert_non_localized_year(response, 2000)
def test_within_month(self):
"""
day-level links appear for changelist within single month.
"""
DATES = (datetime.date(2000, 6, 30),
datetime.date(2000, 6, 15),
datetime.date(2000, 6, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
for date in DATES:
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_within_year(self):
"""
month-level links appear for changelist within single year.
"""
DATES = (datetime.date(2000, 1, 30),
datetime.date(2000, 3, 15),
datetime.date(2000, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
url = reverse('admin:admin_views_podcast_changelist')
response = self.client.get(url)
# no day-level links
self.assertNotContains(response, 'release_date__day=')
for date in DATES:
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
def test_multiple_years(self):
"""
year-level links appear for year-spanning changelist.
"""
DATES = (datetime.date(2001, 1, 30),
datetime.date(2003, 3, 15),
datetime.date(2005, 5, 3))
for date in DATES:
Podcast.objects.create(release_date=date)
response = self.client.get(
reverse('admin:admin_views_podcast_changelist'))
# no day/month-level links
self.assertNotContains(response, 'release_date__day=')
self.assertNotContains(response, 'release_date__month=')
for date in DATES:
self.assert_contains_year_link(response, date)
# and make sure GET parameters still behave correctly
for date in DATES:
url = '%s?release_date__year=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year)
response = self.client.get(url)
self.assert_contains_month_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
url = '%s?release_date__year=%d&release_date__month=%d' % (
reverse('admin:admin_views_podcast_changelist'),
date.year, date.month)
response = self.client.get(url)
self.assert_contains_day_link(response, date)
self.assert_non_localized_year(response, 2000)
self.assert_non_localized_year(response, 2003)
self.assert_non_localized_year(response, 2005)
def test_related_field(self):
questions_data = (
# (posted data, number of answers),
(datetime.date(2001, 1, 30), 0),
(datetime.date(2003, 3, 15), 1),
(datetime.date(2005, 5, 3), 2),
)
for date, answer_count in questions_data:
question = Question.objects.create(posted=date)
for i in range(answer_count):
question.answer_set.create()
response = self.client.get(reverse('admin:admin_views_answer_changelist'))
for date, answer_count in questions_data:
link = '?question__posted__year=%d"' % date.year
if answer_count > 0:
self.assertContains(response, link)
else:
self.assertNotContains(response, link)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminCustomSaveRelatedTests(TestCase):
"""
One can easily customize the way related objects are saved.
Refs #16115.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_should_be_able_to_edit_related_objects_on_add_view(self):
post = {
'child_set-TOTAL_FORMS': '3',
'child_set-INITIAL_FORMS': '0',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-1-name': 'Catherine',
}
self.client.post(reverse('admin:admin_views_parent_add'), post)
self.assertEqual(1, Parent.objects.count())
self.assertEqual(2, Child.objects.count())
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_change_view(self):
parent = Parent.objects.create(name='Josh Stone')
paul = Child.objects.create(parent=parent, name='Paul')
catherine = Child.objects.create(parent=parent, name='Catherine')
post = {
'child_set-TOTAL_FORMS': '5',
'child_set-INITIAL_FORMS': '2',
'name': 'Josh Stone',
'child_set-0-name': 'Paul',
'child_set-0-id': paul.id,
'child_set-1-name': 'Catherine',
'child_set-1-id': catherine.id,
}
self.client.post(reverse('admin:admin_views_parent_change', args=(parent.id,)), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
def test_should_be_able_to_edit_related_objects_on_changelist_view(self):
parent = Parent.objects.create(name='Josh Rock')
Child.objects.create(parent=parent, name='Paul')
Child.objects.create(parent=parent, name='Catherine')
post = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '1',
'form-MAX_NUM_FORMS': '0',
'form-0-id': parent.id,
'form-0-name': 'Josh Stone',
'_save': 'Save'
}
self.client.post(reverse('admin:admin_views_parent_changelist'), post)
children_names = list(Child.objects.order_by('name').values_list('name', flat=True))
self.assertEqual('Josh Stone', Parent.objects.latest('id').name)
self.assertEqual(['Catherine Stone', 'Paul Stone'], children_names)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewLogoutTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def test_logout(self):
self.client.force_login(self.superuser)
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, 'registration/logged_out.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:logout'))
self.assertFalse(response.context['has_permission'])
self.assertNotContains(response, 'user-tools') # user-tools div shouldn't visible.
def test_client_logout_url_can_be_used_to_login(self):
response = self.client.get(reverse('admin:logout'))
self.assertEqual(response.status_code, 302) # we should be redirected to the login page.
# follow the redirect and test results.
response = self.client.get(reverse('admin:logout'), follow=True)
self.assertContains(
response,
'<input type="hidden" name="next" value="%s">' % reverse('admin:index'),
)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.request['PATH_INFO'], reverse('admin:login'))
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminUserMessageTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def send_message(self, level):
"""
Helper that sends a post to the dummy test methods and asserts that a
message with the level has appeared in the response.
"""
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_%s' % level,
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="%s">Test %s</li>' % (level, level),
html=True)
@override_settings(MESSAGE_LEVEL=10) # Set to DEBUG for this request
def test_message_debug(self):
self.send_message('debug')
def test_message_info(self):
self.send_message('info')
def test_message_success(self):
self.send_message('success')
def test_message_warning(self):
self.send_message('warning')
def test_message_error(self):
self.send_message('error')
def test_message_extra_tags(self):
action_data = {
ACTION_CHECKBOX_NAME: [1],
'action': 'message_extra_tags',
'index': 0,
}
response = self.client.post(reverse('admin:admin_views_usermessenger_changelist'),
action_data, follow=True)
self.assertContains(response,
'<li class="extra_tag info">Test tags</li>',
html=True)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminKeepChangeListFiltersTests(TestCase):
admin_site = site
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.joepublicuser = User.objects.create_user(username='joepublic', password='secret')
def setUp(self):
self.client.force_login(self.superuser)
def assertURLEqual(self, url1, url2, msg_prefix=''):
"""
Assert that two URLs are equal despite the ordering
of their querystring. Refs #22360.
"""
parsed_url1 = urlparse(url1)
path1 = parsed_url1.path
parsed_qs1 = dict(parse_qsl(parsed_url1.query))
parsed_url2 = urlparse(url2)
path2 = parsed_url2.path
parsed_qs2 = dict(parse_qsl(parsed_url2.query))
for parsed_qs in [parsed_qs1, parsed_qs2]:
if '_changelist_filters' in parsed_qs:
changelist_filters = parsed_qs['_changelist_filters']
parsed_filters = dict(parse_qsl(changelist_filters))
parsed_qs['_changelist_filters'] = parsed_filters
self.assertEqual(path1, path2)
self.assertEqual(parsed_qs1, parsed_qs2)
def test_assert_url_equal(self):
# Test equality.
change_user_url = reverse('admin:auth_user_change', args=(self.joepublicuser.pk,))
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
)
)
# Test inequality.
with self.assertRaises(AssertionError):
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'http://testserver{}?_changelist_filters=is_staff__exact%3D1%26is_superuser__exact%3D1'.format(
change_user_url
)
)
# Ignore scheme and host.
self.assertURLEqual(
'http://testserver{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(
change_user_url
),
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url)
)
# Ignore ordering of querystring.
self.assertURLEqual(
'{}?is_staff__exact=0&is_superuser__exact=0'.format(reverse('admin:auth_user_changelist')),
'{}?is_superuser__exact=0&is_staff__exact=0'.format(reverse('admin:auth_user_changelist'))
)
# Ignore ordering of _changelist_filters.
self.assertURLEqual(
'{}?_changelist_filters=is_staff__exact%3D0%26is_superuser__exact%3D0'.format(change_user_url),
'{}?_changelist_filters=is_superuser__exact%3D0%26is_staff__exact%3D0'.format(change_user_url)
)
def get_changelist_filters(self):
return {
'is_superuser__exact': 0,
'is_staff__exact': 0,
}
def get_changelist_filters_querystring(self):
return urlencode(self.get_changelist_filters())
def get_preserved_filters_querystring(self):
return urlencode({
'_changelist_filters': self.get_changelist_filters_querystring()
})
def get_sample_user_id(self):
return self.joepublicuser.pk
def get_changelist_url(self):
return '%s?%s' % (
reverse('admin:auth_user_changelist',
current_app=self.admin_site.name),
self.get_changelist_filters_querystring(),
)
def get_add_url(self, add_preserved_filters=True):
url = reverse('admin:auth_user_add', current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_change_url(self, user_id=None, add_preserved_filters=True):
if user_id is None:
user_id = self.get_sample_user_id()
url = reverse('admin:auth_user_change', args=(user_id,), current_app=self.admin_site.name)
if add_preserved_filters:
url = '%s?%s' % (url, self.get_preserved_filters_querystring())
return url
def get_history_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_history', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def get_delete_url(self, user_id=None):
if user_id is None:
user_id = self.get_sample_user_id()
return "%s?%s" % (
reverse('admin:auth_user_delete', args=(user_id,),
current_app=self.admin_site.name),
self.get_preserved_filters_querystring(),
)
def test_changelist_view(self):
response = self.client.get(self.get_changelist_url())
self.assertEqual(response.status_code, 200)
# Check the `change_view` link has the correct querystring.
detail_link = re.search(
'<a href="(.*?)">{}</a>'.format(self.joepublicuser.username),
response.content.decode()
)
self.assertURLEqual(detail_link[1], self.get_change_url())
def test_change_view(self):
# Get the `change_view`.
response = self.client.get(self.get_change_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
# Check the history link.
history_link = re.search(
'<a href="(.*?)" class="historylink">History</a>',
response.content.decode()
)
self.assertURLEqual(history_link[1], self.get_history_url())
# Check the delete link.
delete_link = re.search(
'<a href="(.*?)" class="deletelink">Delete</a>',
response.content.decode()
)
self.assertURLEqual(delete_link[1], self.get_delete_url())
# Test redirect on "Save".
post_data = {
'username': 'joepublic',
'last_login_0': '2007-05-30',
'last_login_1': '13:20:10',
'date_joined_0': '2007-05-30',
'date_joined_1': '13:20:10',
}
post_data['_save'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_changelist_url())
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['_continue'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_change_url())
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['_addanother'] = 1
response = self.client.post(self.get_change_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_change_view_without_preserved_filters(self):
response = self.client.get(self.get_change_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_add_view(self):
# Get the `add_view`.
response = self.client.get(self.get_add_url())
self.assertEqual(response.status_code, 200)
# Check the form action.
form_action = re.search(
'<form action="(.*?)" method="post" id="user_form" novalidate>',
response.content.decode()
)
self.assertURLEqual(form_action[1], '?%s' % self.get_preserved_filters_querystring())
post_data = {
'username': 'dummy',
'password1': 'test',
'password2': 'test',
}
# Test redirect on "Save".
post_data['_save'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy').pk))
post_data.pop('_save')
# Test redirect on "Save and continue".
post_data['username'] = 'dummy2'
post_data['_continue'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_change_url(User.objects.get(username='dummy2').pk))
post_data.pop('_continue')
# Test redirect on "Save and add new".
post_data['username'] = 'dummy3'
post_data['_addanother'] = 1
response = self.client.post(self.get_add_url(), data=post_data)
self.assertRedirects(response, self.get_add_url())
post_data.pop('_addanother')
def test_add_view_without_preserved_filters(self):
response = self.client.get(self.get_add_url(add_preserved_filters=False))
# The action attribute is omitted.
self.assertContains(response, '<form method="post" id="user_form" novalidate>')
def test_delete_view(self):
# Test redirect on "Delete".
response = self.client.post(self.get_delete_url(), {'post': 'yes'})
self.assertRedirects(response, self.get_changelist_url())
def test_url_prefix(self):
context = {
'preserved_filters': self.get_preserved_filters_querystring(),
'opts': User._meta,
}
prefixes = ('', '/prefix/', '/後台/')
for prefix in prefixes:
with self.subTest(prefix=prefix), override_script_prefix(prefix):
url = reverse('admin:auth_user_changelist', current_app=self.admin_site.name)
self.assertURLEqual(
self.get_changelist_url(),
add_preserved_filters(context, url),
)
class NamespacedAdminKeepChangeListFiltersTests(AdminKeepChangeListFiltersTests):
admin_site = site2
@override_settings(ROOT_URLCONF='admin_views.urls')
class TestLabelVisibility(TestCase):
""" #11277 -Labels of hidden fields in admin were not hidden. """
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_all_fields_visible(self):
response = self.client.get(reverse('admin:admin_views_emptymodelvisible_add'))
self.assert_fieldline_visible(response)
self.assert_field_visible(response, 'first')
self.assert_field_visible(response, 'second')
def test_all_fields_hidden(self):
response = self.client.get(reverse('admin:admin_views_emptymodelhidden_add'))
self.assert_fieldline_hidden(response)
self.assert_field_hidden(response, 'first')
self.assert_field_hidden(response, 'second')
def test_mixin(self):
response = self.client.get(reverse('admin:admin_views_emptymodelmixin_add'))
self.assert_fieldline_visible(response)
self.assert_field_hidden(response, 'first')
self.assert_field_visible(response, 'second')
def assert_field_visible(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s">' % field_name)
def assert_field_hidden(self, response, field_name):
self.assertContains(response, '<div class="fieldBox field-%s hidden">' % field_name)
def assert_fieldline_visible(self, response):
self.assertContains(response, '<div class="form-row field-first field-second">')
def assert_fieldline_hidden(self, response):
self.assertContains(response, '<div class="form-row hidden')
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminViewOnSiteTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_add_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data.
Also, assertFormError() and assertFormsetError() is usable for admin
forms and formsets.
"""
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test1',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': '',
'dependentchild_set-0-family_name': 'Test2',
}
response = self.client.post(reverse('admin:admin_views_parentwithdependentchildren_add'), post_data)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
msg = "The form 'adminform' in context 0 does not contain the non-field error 'Error'"
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormError(response, 'adminform', None, ['Error'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
msg = "The formset 'inline_admin_formset' in context 22 does not contain any non-form errors."
with self.assertRaisesMessage(AssertionError, msg):
self.assertFormsetError(response, 'inline_admin_formset', None, None, ['Error'])
def test_change_view_form_and_formsets_run_validation(self):
"""
Issue #20522
Verifying that if the parent form fails validation, the inlines also
run validation even if validation is contingent on parent form data
"""
pwdc = ParentWithDependentChildren.objects.create(some_required_info=6, family_name='Test1')
# The form validation should fail because 'some_required_info' is
# not included on the parent form, and the family_name of the parent
# does not match that of the child
post_data = {
'family_name': 'Test2',
'dependentchild_set-TOTAL_FORMS': '1',
'dependentchild_set-INITIAL_FORMS': '0',
'dependentchild_set-MAX_NUM_FORMS': '1',
'dependentchild_set-0-id': '',
'dependentchild_set-0-parent': str(pwdc.id),
'dependentchild_set-0-family_name': 'Test1',
}
response = self.client.post(
reverse('admin:admin_views_parentwithdependentchildren_change', args=(pwdc.id,)), post_data
)
self.assertFormError(response, 'adminform', 'some_required_info', ['This field is required.'])
self.assertFormsetError(
response, 'inline_admin_formset', 0, None,
['Children must share a family name with their parents in this contrived test case']
)
def test_check(self):
"The view_on_site value is either a boolean or a callable"
try:
admin = CityAdmin(City, AdminSite())
CityAdmin.view_on_site = True
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = False
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = lambda obj: obj.get_absolute_url()
self.assertEqual(admin.check(), [])
CityAdmin.view_on_site = []
self.assertEqual(admin.check(), [
Error(
"The value of 'view_on_site' must be a callable or a boolean value.",
obj=CityAdmin,
id='admin.E025',
),
])
finally:
# Restore the original values for the benefit of other tests.
CityAdmin.view_on_site = True
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, 1)))
def test_true(self):
"The default behavior is followed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_worker_change', args=(self.w1.pk,)))
self.assertContains(response, '"/worker/%s/%s/"' % (self.w1.surname, self.w1.name))
def test_missing_get_absolute_url(self):
"None is returned if model doesn't have get_absolute_url"
model_admin = ModelAdmin(Worker, None)
self.assertIsNone(model_admin.get_view_on_site_url(Worker()))
@override_settings(ROOT_URLCONF='admin_views.urls')
class InlineAdminViewOnSiteTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
cls.s1 = State.objects.create(name='New York')
cls.s2 = State.objects.create(name='Illinois')
cls.s3 = State.objects.create(name='California')
cls.c1 = City.objects.create(state=cls.s1, name='New York')
cls.c2 = City.objects.create(state=cls.s2, name='Chicago')
cls.c3 = City.objects.create(state=cls.s3, name='San Francisco')
cls.r1 = Restaurant.objects.create(city=cls.c1, name='Italian Pizza')
cls.r2 = Restaurant.objects.create(city=cls.c1, name='Boulevard')
cls.r3 = Restaurant.objects.create(city=cls.c2, name='Chinese Dinner')
cls.r4 = Restaurant.objects.create(city=cls.c2, name='Angels')
cls.r5 = Restaurant.objects.create(city=cls.c2, name='Take Away')
cls.r6 = Restaurant.objects.create(city=cls.c3, name='The Unknown Restaurant')
cls.w1 = Worker.objects.create(work_at=cls.r1, name='Mario', surname='Rossi')
cls.w2 = Worker.objects.create(work_at=cls.r1, name='Antonio', surname='Bianchi')
cls.w3 = Worker.objects.create(work_at=cls.r1, name='John', surname='Doe')
def setUp(self):
self.client.force_login(self.superuser)
def test_false(self):
"The 'View on site' button is not displayed if view_on_site is False"
response = self.client.get(reverse('admin:admin_views_state_change', args=(self.s1.pk,)))
content_type_pk = ContentType.objects.get_for_model(City).pk
self.assertNotContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.c1.pk)))
def test_true(self):
"The 'View on site' button is displayed if view_on_site is True"
response = self.client.get(reverse('admin:admin_views_city_change', args=(self.c1.pk,)))
content_type_pk = ContentType.objects.get_for_model(Restaurant).pk
self.assertContains(response, reverse('admin:view_on_site', args=(content_type_pk, self.r1.pk)))
def test_callable(self):
"The right link is displayed if view_on_site is a callable"
response = self.client.get(reverse('admin:admin_views_restaurant_change', args=(self.r1.pk,)))
self.assertContains(response, '"/worker_inline/%s/%s/"' % (self.w1.surname, self.w1.name))
@override_settings(ROOT_URLCONF='admin_views.urls')
class GetFormsetsWithInlinesArgumentTest(TestCase):
"""
#23934 - When adding a new model instance in the admin, the 'obj' argument
of get_formsets_with_inlines() should be None. When changing, it should be
equal to the existing model instance.
The GetFormsetsArgumentCheckingAdmin ModelAdmin throws an exception
if obj is not None during add_view or obj is None during change_view.
"""
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', password='secret', email='[email protected]')
def setUp(self):
self.client.force_login(self.superuser)
def test_explicitly_provided_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_explicitlyprovidedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
def test_implicitly_generated_pk(self):
post_data = {'name': '1'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_add'), post_data)
self.assertEqual(response.status_code, 302)
post_data = {'name': '2'}
response = self.client.post(reverse('admin:admin_views_implicitlygeneratedpk_change', args=(1,)), post_data)
self.assertEqual(response.status_code, 302)
@override_settings(ROOT_URLCONF='admin_views.urls')
class AdminSiteFinalCatchAllPatternTests(TestCase):
"""
Verifies the behaviour of the admin catch-all view.
* Anonynous/non-staff users are redirected to login for all URLs, whether
otherwise valid or not.
* APPEND_SLASH is applied for staff if needed.
* Otherwise Http404.
* Catch-all view disabled via AdminSite.final_catch_all_view.
"""
def test_unknown_url_redirects_login_if_not_authenticated(self):
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), unknown_url))
def test_unknown_url_404_if_authenticated(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_known_url_missing_slash_redirects_login_if_not_authenticated(self):
known_url = reverse('admin:admin_views_article_changelist')[:-1]
response = self.client.get(known_url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), known_url))
def test_non_admin_url_shares_url_prefix(self):
url = reverse('non_admin')[:-1]
response = self.client.get(url)
# Redirects with the next URL also missing the slash.
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated(self):
url = reverse('admin:article_extra_json')[:-1]
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin:login'), url))
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1], SCRIPT_NAME='/prefix/')
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True, FORCE_SCRIPT_NAME='/prefix/')
def test_missing_slash_append_slash_true_force_script_name(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(
response,
'/prefix' + known_url,
status_code=301,
fetch_redirect_response=False,
)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_non_staff_user(self):
user = User.objects.create_user(
username='user',
password='secret',
email='[email protected]',
is_staff=False,
)
self.client.force_login(user)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, '/test_admin/admin/login/?next=/test_admin/admin/admin_views/article')
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_single_model_no_append_slash(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin9:admin_views_actor_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Same tests above with final_catch_all_view=False.
def test_unknown_url_404_if_not_authenticated_without_final_catch_all_view(self):
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_unknown_url_404_if_authenticated_without_final_catch_all_view(self):
superuser = User.objects.create_superuser(
username='super',
password='secret',
email='[email protected]',
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url)
self.assertEqual(response.status_code, 404)
def test_known_url_redirects_login_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), known_url))
def test_known_url_missing_slash_redirects_with_slash_if_not_authenticated_without_final_catch_all_view(self):
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, fetch_redirect_response=False)
def test_non_admin_url_shares_url_prefix_without_final_catch_all_view(self):
url = reverse('non_admin10')
response = self.client.get(url[:-1])
self.assertRedirects(response, url, status_code=301)
def test_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')
response = self.client.get(url)
self.assertRedirects(response, '%s?next=%s' % (reverse('admin10:login'), url))
def test_unkown_url_without_trailing_slash_if_not_authenticated_without_final_catch_all_view(self):
url = reverse('admin10:article_extra_json')[:-1]
response = self.client.get(url)
# Matches test_admin/admin10/admin_views/article/<path:object_id>/
self.assertRedirects(response, url + '/', status_code=301, fetch_redirect_response=False)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_unknown_url_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
unknown_url = '/test_admin/admin10/unknown/'
response = self.client.get(unknown_url[:-1])
self.assertEqual(response.status_code, 404)
@override_settings(APPEND_SLASH=True)
def test_missing_slash_append_slash_true_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertRedirects(response, known_url, status_code=301, target_status_code=403)
@override_settings(APPEND_SLASH=False)
def test_missing_slash_append_slash_false_without_final_catch_all_view(self):
superuser = User.objects.create_user(
username='staff',
password='secret',
email='[email protected]',
is_staff=True,
)
self.client.force_login(superuser)
known_url = reverse('admin10:admin_views_article_changelist')
response = self.client.get(known_url[:-1])
self.assertEqual(response.status_code, 404)
# Outside admin.
def test_non_admin_url_404_if_not_authenticated(self):
unknown_url = '/unknown/'
response = self.client.get(unknown_url)
# Does not redirect to the admin login.
self.assertEqual(response.status_code, 404)
|
b9c2dba39cf2326d79801064482f889d3c8f996d6d875f5a5c26d9d55aa34586 | import json
import os
import shutil
import sys
import tempfile
import unittest
from io import StringIO
from pathlib import Path
from unittest import mock
from django.conf import settings
from django.contrib.staticfiles import finders, storage
from django.contrib.staticfiles.management.commands.collectstatic import (
Command as CollectstaticCommand,
)
from django.core.management import call_command
from django.test import SimpleTestCase, override_settings
from .cases import CollectionTestCase
from .settings import TEST_ROOT
def hashed_file_path(test, path):
fullpath = test.render_template(test.static_template_snippet(path))
return fullpath.replace(settings.STATIC_URL, '')
class TestHashedFiles:
hashed_file_path = hashed_file_path
def tearDown(self):
# Clear hashed files to avoid side effects among tests.
storage.staticfiles_storage.hashed_files.clear()
def assertPostCondition(self):
"""
Assert post conditions for a test are met. Must be manually called at
the end of each test.
"""
pass
def test_template_tag_return(self):
self.assertStaticRaises(ValueError, "does/not/exist.png", "/static/does/not/exist.png")
self.assertStaticRenders("test/file.txt", "/static/test/file.dad0999e4f8f.txt")
self.assertStaticRenders("test/file.txt", "/static/test/file.dad0999e4f8f.txt", asvar=True)
self.assertStaticRenders("cached/styles.css", "/static/cached/styles.5e0040571e1a.css")
self.assertStaticRenders("path/", "/static/path/")
self.assertStaticRenders("path/?query", "/static/path/?query")
self.assertPostCondition()
def test_template_tag_simple_content(self):
relpath = self.hashed_file_path("cached/styles.css")
self.assertEqual(relpath, "cached/styles.5e0040571e1a.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"cached/other.css", content)
self.assertIn(b"other.d41d8cd98f00.css", content)
self.assertPostCondition()
def test_path_ignored_completely(self):
relpath = self.hashed_file_path("cached/css/ignored.css")
self.assertEqual(relpath, "cached/css/ignored.554da52152af.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertIn(b'#foobar', content)
self.assertIn(b'http:foobar', content)
self.assertIn(b'https:foobar', content)
self.assertIn(b'data:foobar', content)
self.assertIn(b'chrome:foobar', content)
self.assertIn(b'//foobar', content)
self.assertPostCondition()
def test_path_with_querystring(self):
relpath = self.hashed_file_path("cached/styles.css?spam=eggs")
self.assertEqual(relpath, "cached/styles.5e0040571e1a.css?spam=eggs")
with storage.staticfiles_storage.open("cached/styles.5e0040571e1a.css") as relfile:
content = relfile.read()
self.assertNotIn(b"cached/other.css", content)
self.assertIn(b"other.d41d8cd98f00.css", content)
self.assertPostCondition()
def test_path_with_fragment(self):
relpath = self.hashed_file_path("cached/styles.css#eggs")
self.assertEqual(relpath, "cached/styles.5e0040571e1a.css#eggs")
with storage.staticfiles_storage.open("cached/styles.5e0040571e1a.css") as relfile:
content = relfile.read()
self.assertNotIn(b"cached/other.css", content)
self.assertIn(b"other.d41d8cd98f00.css", content)
self.assertPostCondition()
def test_path_with_querystring_and_fragment(self):
relpath = self.hashed_file_path("cached/css/fragments.css")
self.assertEqual(relpath, "cached/css/fragments.a60c0e74834f.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertIn(b'fonts/font.b9b105392eb8.eot?#iefix', content)
self.assertIn(b'fonts/font.b8d603e42714.svg#webfontIyfZbseF', content)
self.assertIn(b'fonts/font.b8d603e42714.svg#path/to/../../fonts/font.svg', content)
self.assertIn(b'data:font/woff;charset=utf-8;base64,d09GRgABAAAAADJoAA0AAAAAR2QAAQAAAAAAAAAAAAA', content)
self.assertIn(b'#default#VML', content)
self.assertPostCondition()
def test_template_tag_absolute(self):
relpath = self.hashed_file_path("cached/absolute.css")
self.assertEqual(relpath, "cached/absolute.eb04def9f9a4.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"/static/cached/styles.css", content)
self.assertIn(b"/static/cached/styles.5e0040571e1a.css", content)
self.assertNotIn(b"/static/styles_root.css", content)
self.assertIn(b"/static/styles_root.401f2509a628.css", content)
self.assertIn(b'/static/cached/img/relative.acae32e4532b.png', content)
self.assertPostCondition()
def test_template_tag_absolute_root(self):
"""
Like test_template_tag_absolute, but for a file in STATIC_ROOT (#26249).
"""
relpath = self.hashed_file_path("absolute_root.css")
self.assertEqual(relpath, "absolute_root.f821df1b64f7.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"/static/styles_root.css", content)
self.assertIn(b"/static/styles_root.401f2509a628.css", content)
self.assertPostCondition()
def test_template_tag_relative(self):
relpath = self.hashed_file_path("cached/relative.css")
self.assertEqual(relpath, "cached/relative.c3e9e1ea6f2e.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"../cached/styles.css", content)
self.assertNotIn(b'@import "styles.css"', content)
self.assertNotIn(b'url(img/relative.png)', content)
self.assertIn(b'url("img/relative.acae32e4532b.png")', content)
self.assertIn(b"../cached/styles.5e0040571e1a.css", content)
self.assertPostCondition()
def test_import_replacement(self):
"See #18050"
relpath = self.hashed_file_path("cached/import.css")
self.assertEqual(relpath, "cached/import.f53576679e5a.css")
with storage.staticfiles_storage.open(relpath) as relfile:
self.assertIn(b"""import url("styles.5e0040571e1a.css")""", relfile.read())
self.assertPostCondition()
def test_template_tag_deep_relative(self):
relpath = self.hashed_file_path("cached/css/window.css")
self.assertEqual(relpath, "cached/css/window.5d5c10836967.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b'url(img/window.png)', content)
self.assertIn(b'url("img/window.acae32e4532b.png")', content)
self.assertPostCondition()
def test_template_tag_url(self):
relpath = self.hashed_file_path("cached/url.css")
self.assertEqual(relpath, "cached/url.902310b73412.css")
with storage.staticfiles_storage.open(relpath) as relfile:
self.assertIn(b"https://", relfile.read())
self.assertPostCondition()
@override_settings(
STATICFILES_DIRS=[os.path.join(TEST_ROOT, 'project', 'loop')],
STATICFILES_FINDERS=['django.contrib.staticfiles.finders.FileSystemFinder'],
)
def test_import_loop(self):
finders.get_finder.cache_clear()
err = StringIO()
with self.assertRaisesMessage(RuntimeError, 'Max post-process passes exceeded'):
call_command('collectstatic', interactive=False, verbosity=0, stderr=err)
self.assertEqual("Post-processing 'All' failed!\n\n", err.getvalue())
self.assertPostCondition()
def test_post_processing(self):
"""
post_processing behaves correctly.
Files that are alterable should always be post-processed; files that
aren't should be skipped.
collectstatic has already been called once in setUp() for this testcase,
therefore we check by verifying behavior on a second run.
"""
collectstatic_args = {
'interactive': False,
'verbosity': 0,
'link': False,
'clear': False,
'dry_run': False,
'post_process': True,
'use_default_ignore_patterns': True,
'ignore_patterns': ['*.ignoreme'],
}
collectstatic_cmd = CollectstaticCommand()
collectstatic_cmd.set_options(**collectstatic_args)
stats = collectstatic_cmd.collect()
self.assertIn(os.path.join('cached', 'css', 'window.css'), stats['post_processed'])
self.assertIn(os.path.join('cached', 'css', 'img', 'window.png'), stats['unmodified'])
self.assertIn(os.path.join('test', 'nonascii.css'), stats['post_processed'])
# No file should be yielded twice.
self.assertCountEqual(stats['post_processed'], set(stats['post_processed']))
self.assertPostCondition()
def test_css_import_case_insensitive(self):
relpath = self.hashed_file_path("cached/styles_insensitive.css")
self.assertEqual(relpath, "cached/styles_insensitive.3fa427592a53.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"cached/other.css", content)
self.assertIn(b"other.d41d8cd98f00.css", content)
self.assertPostCondition()
def test_js_source_map(self):
relpath = self.hashed_file_path('cached/source_map.js')
self.assertEqual(relpath, 'cached/source_map.cd45b8534a87.js')
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b'//# sourceMappingURL=source_map.js.map', content)
self.assertIn(
b'//# sourceMappingURL=source_map.js.99914b932bd3.map',
content,
)
self.assertPostCondition()
def test_js_source_map_sensitive(self):
relpath = self.hashed_file_path('cached/source_map_sensitive.js')
self.assertEqual(relpath, 'cached/source_map_sensitive.5da96fdd3cb3.js')
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertIn(b'//# sOuRcEMaPpInGURL=source_map.js.map', content)
self.assertNotIn(
b'//# sourceMappingURL=source_map.js.99914b932bd3.map',
content,
)
self.assertPostCondition()
@override_settings(
STATICFILES_DIRS=[os.path.join(TEST_ROOT, 'project', 'faulty')],
STATICFILES_FINDERS=['django.contrib.staticfiles.finders.FileSystemFinder'],
)
def test_post_processing_failure(self):
"""
post_processing indicates the origin of the error when it fails.
"""
finders.get_finder.cache_clear()
err = StringIO()
with self.assertRaises(Exception):
call_command('collectstatic', interactive=False, verbosity=0, stderr=err)
self.assertEqual("Post-processing 'faulty.css' failed!\n\n", err.getvalue())
self.assertPostCondition()
@override_settings(STATICFILES_STORAGE='staticfiles_tests.storage.ExtraPatternsStorage')
class TestExtraPatternsStorage(CollectionTestCase):
def setUp(self):
storage.staticfiles_storage.hashed_files.clear() # avoid cache interference
super().setUp()
def cached_file_path(self, path):
fullpath = self.render_template(self.static_template_snippet(path))
return fullpath.replace(settings.STATIC_URL, '')
def test_multi_extension_patterns(self):
"""
With storage classes having several file extension patterns, only the
files matching a specific file pattern should be affected by the
substitution (#19670).
"""
# CSS files shouldn't be touched by JS patterns.
relpath = self.cached_file_path("cached/import.css")
self.assertEqual(relpath, "cached/import.f53576679e5a.css")
with storage.staticfiles_storage.open(relpath) as relfile:
self.assertIn(b'import url("styles.5e0040571e1a.css")', relfile.read())
# Confirm JS patterns have been applied to JS files.
relpath = self.cached_file_path("cached/test.js")
self.assertEqual(relpath, "cached/test.388d7a790d46.js")
with storage.staticfiles_storage.open(relpath) as relfile:
self.assertIn(b'JS_URL("import.f53576679e5a.css")', relfile.read())
@override_settings(
STATICFILES_STORAGE='django.contrib.staticfiles.storage.ManifestStaticFilesStorage',
)
class TestCollectionManifestStorage(TestHashedFiles, CollectionTestCase):
"""
Tests for the Cache busting storage
"""
def setUp(self):
super().setUp()
temp_dir = tempfile.mkdtemp()
os.makedirs(os.path.join(temp_dir, 'test'))
self._clear_filename = os.path.join(temp_dir, 'test', 'cleared.txt')
with open(self._clear_filename, 'w') as f:
f.write('to be deleted in one test')
self.patched_settings = self.settings(
STATICFILES_DIRS=settings.STATICFILES_DIRS + [temp_dir],
)
self.patched_settings.enable()
self.addCleanup(shutil.rmtree, temp_dir)
self._manifest_strict = storage.staticfiles_storage.manifest_strict
def tearDown(self):
self.patched_settings.disable()
if os.path.exists(self._clear_filename):
os.unlink(self._clear_filename)
storage.staticfiles_storage.manifest_strict = self._manifest_strict
super().tearDown()
def assertPostCondition(self):
hashed_files = storage.staticfiles_storage.hashed_files
# The in-memory version of the manifest matches the one on disk
# since a properly created manifest should cover all filenames.
if hashed_files:
manifest = storage.staticfiles_storage.load_manifest()
self.assertEqual(hashed_files, manifest)
def test_manifest_exists(self):
filename = storage.staticfiles_storage.manifest_name
path = storage.staticfiles_storage.path(filename)
self.assertTrue(os.path.exists(path))
def test_manifest_does_not_exist(self):
storage.staticfiles_storage.manifest_name = 'does.not.exist.json'
self.assertIsNone(storage.staticfiles_storage.read_manifest())
def test_manifest_does_not_ignore_permission_error(self):
with mock.patch('builtins.open', side_effect=PermissionError):
with self.assertRaises(PermissionError):
storage.staticfiles_storage.read_manifest()
def test_loaded_cache(self):
self.assertNotEqual(storage.staticfiles_storage.hashed_files, {})
manifest_content = storage.staticfiles_storage.read_manifest()
self.assertIn(
'"version": "%s"' % storage.staticfiles_storage.manifest_version,
manifest_content
)
def test_parse_cache(self):
hashed_files = storage.staticfiles_storage.hashed_files
manifest = storage.staticfiles_storage.load_manifest()
self.assertEqual(hashed_files, manifest)
def test_clear_empties_manifest(self):
cleared_file_name = storage.staticfiles_storage.clean_name(os.path.join('test', 'cleared.txt'))
# collect the additional file
self.run_collectstatic()
hashed_files = storage.staticfiles_storage.hashed_files
self.assertIn(cleared_file_name, hashed_files)
manifest_content = storage.staticfiles_storage.load_manifest()
self.assertIn(cleared_file_name, manifest_content)
original_path = storage.staticfiles_storage.path(cleared_file_name)
self.assertTrue(os.path.exists(original_path))
# delete the original file form the app, collect with clear
os.unlink(self._clear_filename)
self.run_collectstatic(clear=True)
self.assertFileNotFound(original_path)
hashed_files = storage.staticfiles_storage.hashed_files
self.assertNotIn(cleared_file_name, hashed_files)
manifest_content = storage.staticfiles_storage.load_manifest()
self.assertNotIn(cleared_file_name, manifest_content)
def test_missing_entry(self):
missing_file_name = 'cached/missing.css'
configured_storage = storage.staticfiles_storage
self.assertNotIn(missing_file_name, configured_storage.hashed_files)
# File name not found in manifest
with self.assertRaisesMessage(ValueError, "Missing staticfiles manifest entry for '%s'" % missing_file_name):
self.hashed_file_path(missing_file_name)
configured_storage.manifest_strict = False
# File doesn't exist on disk
err_msg = "The file '%s' could not be found with %r." % (missing_file_name, configured_storage._wrapped)
with self.assertRaisesMessage(ValueError, err_msg):
self.hashed_file_path(missing_file_name)
content = StringIO()
content.write('Found')
configured_storage.save(missing_file_name, content)
# File exists on disk
self.hashed_file_path(missing_file_name)
def test_intermediate_files(self):
cached_files = os.listdir(os.path.join(settings.STATIC_ROOT, 'cached'))
# Intermediate files shouldn't be created for reference.
self.assertEqual(
len([
cached_file
for cached_file in cached_files
if cached_file.startswith('relative.')
]),
2,
)
@override_settings(STATICFILES_STORAGE='staticfiles_tests.storage.NoneHashStorage')
class TestCollectionNoneHashStorage(CollectionTestCase):
hashed_file_path = hashed_file_path
def test_hashed_name(self):
relpath = self.hashed_file_path('cached/styles.css')
self.assertEqual(relpath, 'cached/styles.css')
@override_settings(
STATICFILES_STORAGE='staticfiles_tests.storage.NoPostProcessReplacedPathStorage'
)
class TestCollectionNoPostProcessReplacedPaths(CollectionTestCase):
run_collectstatic_in_setUp = False
def test_collectstatistic_no_post_process_replaced_paths(self):
stdout = StringIO()
self.run_collectstatic(verbosity=1, stdout=stdout)
self.assertIn('post-processed', stdout.getvalue())
@override_settings(STATICFILES_STORAGE='staticfiles_tests.storage.SimpleStorage')
class TestCollectionSimpleStorage(CollectionTestCase):
hashed_file_path = hashed_file_path
def setUp(self):
storage.staticfiles_storage.hashed_files.clear() # avoid cache interference
super().setUp()
def test_template_tag_return(self):
self.assertStaticRaises(ValueError, "does/not/exist.png", "/static/does/not/exist.png")
self.assertStaticRenders("test/file.txt", "/static/test/file.deploy12345.txt")
self.assertStaticRenders("cached/styles.css", "/static/cached/styles.deploy12345.css")
self.assertStaticRenders("path/", "/static/path/")
self.assertStaticRenders("path/?query", "/static/path/?query")
def test_template_tag_simple_content(self):
relpath = self.hashed_file_path("cached/styles.css")
self.assertEqual(relpath, "cached/styles.deploy12345.css")
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertNotIn(b"cached/other.css", content)
self.assertIn(b"other.deploy12345.css", content)
class CustomManifestStorage(storage.ManifestStaticFilesStorage):
def __init__(self, *args, manifest_storage=None, **kwargs):
manifest_storage = storage.StaticFilesStorage(
location=kwargs.pop('manifest_location'),
)
super().__init__(*args, manifest_storage=manifest_storage, **kwargs)
class TestCustomManifestStorage(SimpleTestCase):
def setUp(self):
self.manifest_path = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, self.manifest_path)
self.staticfiles_storage = CustomManifestStorage(
manifest_location=self.manifest_path,
)
self.manifest_file = self.manifest_path / self.staticfiles_storage.manifest_name
# Manifest without paths.
self.manifest = {'version': self.staticfiles_storage.manifest_version}
with self.manifest_file.open('w') as manifest_file:
json.dump(self.manifest, manifest_file)
def test_read_manifest(self):
self.assertEqual(
self.staticfiles_storage.read_manifest(),
json.dumps(self.manifest),
)
def test_read_manifest_nonexistent(self):
os.remove(self.manifest_file)
self.assertIsNone(self.staticfiles_storage.read_manifest())
def test_save_manifest_override(self):
self.assertIs(self.manifest_file.exists(), True)
self.staticfiles_storage.save_manifest()
self.assertIs(self.manifest_file.exists(), True)
new_manifest = json.loads(self.staticfiles_storage.read_manifest())
self.assertIn('paths', new_manifest)
self.assertNotEqual(new_manifest, self.manifest)
def test_save_manifest_create(self):
os.remove(self.manifest_file)
self.staticfiles_storage.save_manifest()
self.assertIs(self.manifest_file.exists(), True)
new_manifest = json.loads(self.staticfiles_storage.read_manifest())
self.assertIn('paths', new_manifest)
self.assertNotEqual(new_manifest, self.manifest)
class CustomStaticFilesStorage(storage.StaticFilesStorage):
"""
Used in TestStaticFilePermissions
"""
def __init__(self, *args, **kwargs):
kwargs['file_permissions_mode'] = 0o640
kwargs['directory_permissions_mode'] = 0o740
super().__init__(*args, **kwargs)
@unittest.skipIf(sys.platform == 'win32', "Windows only partially supports chmod.")
class TestStaticFilePermissions(CollectionTestCase):
command_params = {
'interactive': False,
'verbosity': 0,
'ignore_patterns': ['*.ignoreme'],
}
def setUp(self):
self.umask = 0o027
self.old_umask = os.umask(self.umask)
super().setUp()
def tearDown(self):
os.umask(self.old_umask)
super().tearDown()
# Don't run collectstatic command in this test class.
def run_collectstatic(self, **kwargs):
pass
@override_settings(
FILE_UPLOAD_PERMISSIONS=0o655,
FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o765,
)
def test_collect_static_files_permissions(self):
call_command('collectstatic', **self.command_params)
static_root = Path(settings.STATIC_ROOT)
test_file = static_root / 'test.txt'
file_mode = test_file.stat().st_mode & 0o777
self.assertEqual(file_mode, 0o655)
tests = [
static_root / 'subdir',
static_root / 'nested',
static_root / 'nested' / 'css',
]
for directory in tests:
with self.subTest(directory=directory):
dir_mode = directory.stat().st_mode & 0o777
self.assertEqual(dir_mode, 0o765)
@override_settings(
FILE_UPLOAD_PERMISSIONS=None,
FILE_UPLOAD_DIRECTORY_PERMISSIONS=None,
)
def test_collect_static_files_default_permissions(self):
call_command('collectstatic', **self.command_params)
static_root = Path(settings.STATIC_ROOT)
test_file = static_root / 'test.txt'
file_mode = test_file.stat().st_mode & 0o777
self.assertEqual(file_mode, 0o666 & ~self.umask)
tests = [
static_root / 'subdir',
static_root / 'nested',
static_root / 'nested' / 'css',
]
for directory in tests:
with self.subTest(directory=directory):
dir_mode = directory.stat().st_mode & 0o777
self.assertEqual(dir_mode, 0o777 & ~self.umask)
@override_settings(
FILE_UPLOAD_PERMISSIONS=0o655,
FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o765,
STATICFILES_STORAGE='staticfiles_tests.test_storage.CustomStaticFilesStorage',
)
def test_collect_static_files_subclass_of_static_storage(self):
call_command('collectstatic', **self.command_params)
static_root = Path(settings.STATIC_ROOT)
test_file = static_root / 'test.txt'
file_mode = test_file.stat().st_mode & 0o777
self.assertEqual(file_mode, 0o640)
tests = [
static_root / 'subdir',
static_root / 'nested',
static_root / 'nested' / 'css',
]
for directory in tests:
with self.subTest(directory=directory):
dir_mode = directory.stat().st_mode & 0o777
self.assertEqual(dir_mode, 0o740)
@override_settings(
STATICFILES_STORAGE='django.contrib.staticfiles.storage.ManifestStaticFilesStorage',
)
class TestCollectionHashedFilesCache(CollectionTestCase):
"""
Files referenced from CSS use the correct final hashed name regardless of
the order in which the files are post-processed.
"""
hashed_file_path = hashed_file_path
def setUp(self):
super().setUp()
self._temp_dir = temp_dir = tempfile.mkdtemp()
os.makedirs(os.path.join(temp_dir, 'test'))
self.addCleanup(shutil.rmtree, temp_dir)
def _get_filename_path(self, filename):
return os.path.join(self._temp_dir, 'test', filename)
def test_file_change_after_collectstatic(self):
# Create initial static files.
file_contents = (
('foo.png', 'foo'),
('bar.css', 'url("foo.png")\nurl("xyz.png")'),
('xyz.png', 'xyz'),
)
for filename, content in file_contents:
with open(self._get_filename_path(filename), 'w') as f:
f.write(content)
with self.modify_settings(STATICFILES_DIRS={'append': self._temp_dir}):
finders.get_finder.cache_clear()
err = StringIO()
# First collectstatic run.
call_command('collectstatic', interactive=False, verbosity=0, stderr=err)
relpath = self.hashed_file_path('test/bar.css')
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertIn(b'foo.acbd18db4cc2.png', content)
self.assertIn(b'xyz.d16fb36f0911.png', content)
# Change the contents of the png files.
for filename in ('foo.png', 'xyz.png'):
with open(self._get_filename_path(filename), 'w+b') as f:
f.write(b"new content of file to change its hash")
# The hashes of the png files in the CSS file are updated after
# a second collectstatic.
call_command('collectstatic', interactive=False, verbosity=0, stderr=err)
relpath = self.hashed_file_path('test/bar.css')
with storage.staticfiles_storage.open(relpath) as relfile:
content = relfile.read()
self.assertIn(b'foo.57a5cb9ba68d.png', content)
self.assertIn(b'xyz.57a5cb9ba68d.png', content)
|
d9cff22a15f7b4dfb804031c72fb221c47b0c38f2d3e7729cf48d68dc7e13e58 | import datetime
from django.core.exceptions import FieldDoesNotExist
from django.db.models import F
from django.db.models.functions import Lower
from django.test import TestCase, skipUnlessDBFeature
from .models import (
Article, CustomDbColumn, CustomPk, Detail, Individual, JSONFieldNullable,
Member, Note, Number, Order, Paragraph, RelatedObject, SingleObject,
SpecialCategory, Tag, Valid,
)
class BulkUpdateNoteTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.notes = [
Note.objects.create(note=str(i), misc=str(i))
for i in range(10)
]
def create_tags(self):
self.tags = [
Tag.objects.create(name=str(i))
for i in range(10)
]
def test_simple(self):
for note in self.notes:
note.note = 'test-%s' % note.id
with self.assertNumQueries(1):
Note.objects.bulk_update(self.notes, ['note'])
self.assertCountEqual(
Note.objects.values_list('note', flat=True),
[cat.note for cat in self.notes]
)
def test_multiple_fields(self):
for note in self.notes:
note.note = 'test-%s' % note.id
note.misc = 'misc-%s' % note.id
with self.assertNumQueries(1):
Note.objects.bulk_update(self.notes, ['note', 'misc'])
self.assertCountEqual(
Note.objects.values_list('note', flat=True),
[cat.note for cat in self.notes]
)
self.assertCountEqual(
Note.objects.values_list('misc', flat=True),
[cat.misc for cat in self.notes]
)
def test_batch_size(self):
with self.assertNumQueries(len(self.notes)):
Note.objects.bulk_update(self.notes, fields=['note'], batch_size=1)
def test_unsaved_models(self):
objs = self.notes + [Note(note='test', misc='test')]
msg = 'All bulk_update() objects must have a primary key set.'
with self.assertRaisesMessage(ValueError, msg):
Note.objects.bulk_update(objs, fields=['note'])
def test_foreign_keys_do_not_lookup(self):
self.create_tags()
for note, tag in zip(self.notes, self.tags):
note.tag = tag
with self.assertNumQueries(1):
Note.objects.bulk_update(self.notes, ['tag'])
self.assertSequenceEqual(Note.objects.filter(tag__isnull=False), self.notes)
def test_set_field_to_null(self):
self.create_tags()
Note.objects.update(tag=self.tags[0])
for note in self.notes:
note.tag = None
Note.objects.bulk_update(self.notes, ['tag'])
self.assertCountEqual(Note.objects.filter(tag__isnull=True), self.notes)
def test_set_mixed_fields_to_null(self):
self.create_tags()
midpoint = len(self.notes) // 2
top, bottom = self.notes[:midpoint], self.notes[midpoint:]
for note in top:
note.tag = None
for note in bottom:
note.tag = self.tags[0]
Note.objects.bulk_update(self.notes, ['tag'])
self.assertCountEqual(Note.objects.filter(tag__isnull=True), top)
self.assertCountEqual(Note.objects.filter(tag__isnull=False), bottom)
def test_functions(self):
Note.objects.update(note='TEST')
for note in self.notes:
note.note = Lower('note')
Note.objects.bulk_update(self.notes, ['note'])
self.assertEqual(set(Note.objects.values_list('note', flat=True)), {'test'})
# Tests that use self.notes go here, otherwise put them in another class.
class BulkUpdateTests(TestCase):
def test_no_fields(self):
msg = 'Field names must be given to bulk_update().'
with self.assertRaisesMessage(ValueError, msg):
Note.objects.bulk_update([], fields=[])
def test_invalid_batch_size(self):
msg = 'Batch size must be a positive integer.'
with self.assertRaisesMessage(ValueError, msg):
Note.objects.bulk_update([], fields=['note'], batch_size=-1)
def test_nonexistent_field(self):
with self.assertRaisesMessage(FieldDoesNotExist, "Note has no field named 'nonexistent'"):
Note.objects.bulk_update([], ['nonexistent'])
pk_fields_error = 'bulk_update() cannot be used with primary key fields.'
def test_update_primary_key(self):
with self.assertRaisesMessage(ValueError, self.pk_fields_error):
Note.objects.bulk_update([], ['id'])
def test_update_custom_primary_key(self):
with self.assertRaisesMessage(ValueError, self.pk_fields_error):
CustomPk.objects.bulk_update([], ['name'])
def test_empty_objects(self):
with self.assertNumQueries(0):
rows_updated = Note.objects.bulk_update([], ['note'])
self.assertEqual(rows_updated, 0)
def test_large_batch(self):
Note.objects.bulk_create([
Note(note=str(i), misc=str(i))
for i in range(0, 2000)
])
notes = list(Note.objects.all())
rows_updated = Note.objects.bulk_update(notes, ['note'])
self.assertEqual(rows_updated, 2000)
def test_updated_rows_when_passing_duplicates(self):
note = Note.objects.create(note='test-note', misc='test')
rows_updated = Note.objects.bulk_update([note, note], ['note'])
self.assertEqual(rows_updated, 1)
# Duplicates in different batches.
rows_updated = Note.objects.bulk_update([note, note], ['note'], batch_size=1)
self.assertEqual(rows_updated, 2)
def test_only_concrete_fields_allowed(self):
obj = Valid.objects.create(valid='test')
detail = Detail.objects.create(data='test')
paragraph = Paragraph.objects.create(text='test')
Member.objects.create(name='test', details=detail)
msg = 'bulk_update() can only be used with concrete fields.'
with self.assertRaisesMessage(ValueError, msg):
Detail.objects.bulk_update([detail], fields=['member'])
with self.assertRaisesMessage(ValueError, msg):
Paragraph.objects.bulk_update([paragraph], fields=['page'])
with self.assertRaisesMessage(ValueError, msg):
Valid.objects.bulk_update([obj], fields=['parent'])
def test_custom_db_columns(self):
model = CustomDbColumn.objects.create(custom_column=1)
model.custom_column = 2
CustomDbColumn.objects.bulk_update([model], fields=['custom_column'])
model.refresh_from_db()
self.assertEqual(model.custom_column, 2)
def test_custom_pk(self):
custom_pks = [
CustomPk.objects.create(name='pk-%s' % i, extra='')
for i in range(10)
]
for model in custom_pks:
model.extra = 'extra-%s' % model.pk
CustomPk.objects.bulk_update(custom_pks, ['extra'])
self.assertCountEqual(
CustomPk.objects.values_list('extra', flat=True),
[cat.extra for cat in custom_pks]
)
def test_falsey_pk_value(self):
order = Order.objects.create(pk=0, name='test')
order.name = 'updated'
Order.objects.bulk_update([order], ['name'])
order.refresh_from_db()
self.assertEqual(order.name, 'updated')
def test_inherited_fields(self):
special_categories = [
SpecialCategory.objects.create(name=str(i), special_name=str(i))
for i in range(10)
]
for category in special_categories:
category.name = 'test-%s' % category.id
category.special_name = 'special-test-%s' % category.special_name
SpecialCategory.objects.bulk_update(special_categories, ['name', 'special_name'])
self.assertCountEqual(
SpecialCategory.objects.values_list('name', flat=True),
[cat.name for cat in special_categories]
)
self.assertCountEqual(
SpecialCategory.objects.values_list('special_name', flat=True),
[cat.special_name for cat in special_categories]
)
def test_field_references(self):
numbers = [Number.objects.create(num=0) for _ in range(10)]
for number in numbers:
number.num = F('num') + 1
Number.objects.bulk_update(numbers, ['num'])
self.assertCountEqual(Number.objects.filter(num=1), numbers)
def test_booleanfield(self):
individuals = [Individual.objects.create(alive=False) for _ in range(10)]
for individual in individuals:
individual.alive = True
Individual.objects.bulk_update(individuals, ['alive'])
self.assertCountEqual(Individual.objects.filter(alive=True), individuals)
def test_ipaddressfield(self):
for ip in ('2001::1', '1.2.3.4'):
with self.subTest(ip=ip):
models = [
CustomDbColumn.objects.create(ip_address='0.0.0.0')
for _ in range(10)
]
for model in models:
model.ip_address = ip
CustomDbColumn.objects.bulk_update(models, ['ip_address'])
self.assertCountEqual(CustomDbColumn.objects.filter(ip_address=ip), models)
def test_datetime_field(self):
articles = [
Article.objects.create(name=str(i), created=datetime.datetime.today())
for i in range(10)
]
point_in_time = datetime.datetime(1991, 10, 31)
for article in articles:
article.created = point_in_time
Article.objects.bulk_update(articles, ['created'])
self.assertCountEqual(Article.objects.filter(created=point_in_time), articles)
@skipUnlessDBFeature('supports_json_field')
def test_json_field(self):
JSONFieldNullable.objects.bulk_create([
JSONFieldNullable(json_field={'a': i}) for i in range(10)
])
objs = JSONFieldNullable.objects.all()
for obj in objs:
obj.json_field = {'c': obj.json_field['a'] + 1}
JSONFieldNullable.objects.bulk_update(objs, ['json_field'])
self.assertCountEqual(JSONFieldNullable.objects.filter(json_field__has_key='c'), objs)
def test_nullable_fk_after_related_save(self):
parent = RelatedObject.objects.create()
child = SingleObject()
parent.single = child
parent.single.save()
RelatedObject.objects.bulk_update([parent], fields=['single'])
self.assertEqual(parent.single_id, parent.single.pk)
parent.refresh_from_db()
self.assertEqual(parent.single, child)
def test_unsaved_parent(self):
parent = RelatedObject.objects.create()
parent.single = SingleObject()
msg = (
"bulk_update() prohibited to prevent data loss due to unsaved "
"related object 'single'."
)
with self.assertRaisesMessage(ValueError, msg):
RelatedObject.objects.bulk_update([parent], fields=['single'])
def test_unspecified_unsaved_parent(self):
parent = RelatedObject.objects.create()
parent.single = SingleObject()
parent.f = 42
RelatedObject.objects.bulk_update([parent], fields=['f'])
parent.refresh_from_db()
self.assertEqual(parent.f, 42)
self.assertIsNone(parent.single)
|
54c2d4c7bf95a20908f1a7e8a66c7e168adf8ba7383f37478f07a6cc1b721f00 | import datetime
import itertools
import unittest
from copy import copy
from unittest import mock
from django.core.exceptions import FieldError
from django.core.management.color import no_style
from django.db import (
DatabaseError, DataError, IntegrityError, OperationalError, connection,
)
from django.db.models import (
CASCADE, PROTECT, AutoField, BigAutoField, BigIntegerField, BinaryField,
BooleanField, CharField, CheckConstraint, DateField, DateTimeField,
DecimalField, DurationField, F, FloatField, ForeignKey, ForeignObject,
Index, IntegerField, JSONField, ManyToManyField, Model, OneToOneField,
OrderBy, PositiveIntegerField, Q, SlugField, SmallAutoField,
SmallIntegerField, TextField, TimeField, UniqueConstraint, UUIDField,
Value,
)
from django.db.models.fields.json import KeyTextTransform
from django.db.models.functions import Abs, Cast, Collate, Lower, Random, Upper
from django.db.models.indexes import IndexExpression
from django.db.transaction import TransactionManagementError, atomic
from django.test import (
TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature,
)
from django.test.utils import (
CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.utils import timezone
from .fields import (
CustomManyToManyField, InheritedManyToManyField, MediumBlobField,
)
from .models import (
Author, AuthorCharFieldWithIndex, AuthorTextFieldWithIndex,
AuthorWithDefaultHeight, AuthorWithEvenLongerName, AuthorWithIndexedName,
AuthorWithIndexedNameAndBirthday, AuthorWithUniqueName,
AuthorWithUniqueNameAndBirthday, Book, BookForeignObj, BookWeak,
BookWithLongName, BookWithO2O, BookWithoutAuthor, BookWithSlug, IntegerPK,
Node, Note, NoteRename, Tag, TagIndexed, TagM2MTest, TagUniqueRename,
Thing, UniqueTest, new_apps,
)
class SchemaTests(TransactionTestCase):
"""
Tests for the schema-alteration code.
Be aware that these tests are more liable than most to false results,
as sometimes the code to check if a test has worked is almost as complex
as the code it is testing.
"""
available_apps = []
models = [
Author, AuthorCharFieldWithIndex, AuthorTextFieldWithIndex,
AuthorWithDefaultHeight, AuthorWithEvenLongerName, Book, BookWeak,
BookWithLongName, BookWithO2O, BookWithSlug, IntegerPK, Node, Note,
Tag, TagIndexed, TagM2MTest, TagUniqueRename, Thing, UniqueTest,
]
# Utility functions
def setUp(self):
# local_models should contain test dependent model classes that will be
# automatically removed from the app cache on test tear down.
self.local_models = []
# isolated_local_models contains models that are in test methods
# decorated with @isolate_apps.
self.isolated_local_models = []
def tearDown(self):
# Delete any tables made for our models
self.delete_tables()
new_apps.clear_cache()
for model in new_apps.get_models():
model._meta._expire_cache()
if 'schema' in new_apps.all_models:
for model in self.local_models:
for many_to_many in model._meta.many_to_many:
through = many_to_many.remote_field.through
if through and through._meta.auto_created:
del new_apps.all_models['schema'][through._meta.model_name]
del new_apps.all_models['schema'][model._meta.model_name]
if self.isolated_local_models:
with connection.schema_editor() as editor:
for model in self.isolated_local_models:
editor.delete_model(model)
def delete_tables(self):
"Deletes all model tables for our models for a clean test environment"
converter = connection.introspection.identifier_converter
with connection.schema_editor() as editor:
connection.disable_constraint_checking()
table_names = connection.introspection.table_names()
if connection.features.ignores_table_name_case:
table_names = [table_name.lower() for table_name in table_names]
for model in itertools.chain(SchemaTests.models, self.local_models):
tbl = converter(model._meta.db_table)
if connection.features.ignores_table_name_case:
tbl = tbl.lower()
if tbl in table_names:
editor.delete_model(model)
table_names.remove(tbl)
connection.enable_constraint_checking()
def column_classes(self, model):
with connection.cursor() as cursor:
columns = {
d[0]: (connection.introspection.get_field_type(d[1], d), d)
for d in connection.introspection.get_table_description(
cursor,
model._meta.db_table,
)
}
# SQLite has a different format for field_type
for name, (type, desc) in columns.items():
if isinstance(type, tuple):
columns[name] = (type[0], desc)
return columns
def get_primary_key(self, table):
with connection.cursor() as cursor:
return connection.introspection.get_primary_key_column(cursor, table)
def get_indexes(self, table):
"""
Get the indexes on the table using a new cursor.
"""
with connection.cursor() as cursor:
return [
c['columns'][0]
for c in connection.introspection.get_constraints(cursor, table).values()
if c['index'] and len(c['columns']) == 1
]
def get_uniques(self, table):
with connection.cursor() as cursor:
return [
c['columns'][0]
for c in connection.introspection.get_constraints(cursor, table).values()
if c['unique'] and len(c['columns']) == 1
]
def get_constraints(self, table):
"""
Get the constraints on a table using a new cursor.
"""
with connection.cursor() as cursor:
return connection.introspection.get_constraints(cursor, table)
def get_constraints_for_column(self, model, column_name):
constraints = self.get_constraints(model._meta.db_table)
constraints_for_column = []
for name, details in constraints.items():
if details['columns'] == [column_name]:
constraints_for_column.append(name)
return sorted(constraints_for_column)
def check_added_field_default(self, schema_editor, model, field, field_name, expected_default,
cast_function=None):
with connection.cursor() as cursor:
schema_editor.add_field(model, field)
cursor.execute("SELECT {} FROM {};".format(field_name, model._meta.db_table))
database_default = cursor.fetchall()[0][0]
if cast_function and type(database_default) != type(expected_default):
database_default = cast_function(database_default)
self.assertEqual(database_default, expected_default)
def get_constraints_count(self, table, column, fk_to):
"""
Return a dict with keys 'fks', 'uniques, and 'indexes' indicating the
number of foreign keys, unique constraints, and indexes on
`table`.`column`. The `fk_to` argument is a 2-tuple specifying the
expected foreign key relationship's (table, column).
"""
with connection.cursor() as cursor:
constraints = connection.introspection.get_constraints(cursor, table)
counts = {'fks': 0, 'uniques': 0, 'indexes': 0}
for c in constraints.values():
if c['columns'] == [column]:
if c['foreign_key'] == fk_to:
counts['fks'] += 1
if c['unique']:
counts['uniques'] += 1
elif c['index']:
counts['indexes'] += 1
return counts
def get_column_collation(self, table, column):
with connection.cursor() as cursor:
return next(
f.collation
for f in connection.introspection.get_table_description(cursor, table)
if f.name == column
)
def assertIndexOrder(self, table, index, order):
constraints = self.get_constraints(table)
self.assertIn(index, constraints)
index_orders = constraints[index]['orders']
self.assertTrue(all(val == expected for val, expected in zip(index_orders, order)))
def assertForeignKeyExists(self, model, column, expected_fk_table, field='id'):
"""
Fail if the FK constraint on `model.Meta.db_table`.`column` to
`expected_fk_table`.id doesn't exist.
"""
constraints = self.get_constraints(model._meta.db_table)
constraint_fk = None
for details in constraints.values():
if details['columns'] == [column] and details['foreign_key']:
constraint_fk = details['foreign_key']
break
self.assertEqual(constraint_fk, (expected_fk_table, field))
def assertForeignKeyNotExists(self, model, column, expected_fk_table):
with self.assertRaises(AssertionError):
self.assertForeignKeyExists(model, column, expected_fk_table)
# Tests
def test_creation_deletion(self):
"""
Tries creating a model's table, and then deleting it.
"""
with connection.schema_editor() as editor:
# Create the table
editor.create_model(Author)
# The table is there
list(Author.objects.all())
# Clean up that table
editor.delete_model(Author)
# No deferred SQL should be left over.
self.assertEqual(editor.deferred_sql, [])
# The table is gone
with self.assertRaises(DatabaseError):
list(Author.objects.all())
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk(self):
"Creating tables out of FK order, then repointing, works"
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Book)
editor.create_model(Author)
editor.create_model(Tag)
# Initial tables are there
list(Author.objects.all())
list(Book.objects.all())
# Make sure the FK constraint is present
with self.assertRaises(IntegrityError):
Book.objects.create(
author_id=1,
title="Much Ado About Foreign Keys",
pub_date=datetime.datetime.now(),
)
# Repoint the FK constraint
old_field = Book._meta.get_field("author")
new_field = ForeignKey(Tag, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
self.assertForeignKeyExists(Book, 'author_id', 'schema_tag')
@skipUnlessDBFeature('can_create_inline_fk')
def test_inline_fk(self):
# Create some tables.
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.create_model(Note)
self.assertForeignKeyNotExists(Note, 'book_id', 'schema_book')
# Add a foreign key from one to the other.
with connection.schema_editor() as editor:
new_field = ForeignKey(Book, CASCADE)
new_field.set_attributes_from_name('book')
editor.add_field(Note, new_field)
self.assertForeignKeyExists(Note, 'book_id', 'schema_book')
# Creating a FK field with a constraint uses a single statement without
# a deferred ALTER TABLE.
self.assertFalse([
sql for sql in (str(statement) for statement in editor.deferred_sql)
if sql.startswith('ALTER TABLE') and 'ADD CONSTRAINT' in sql
])
@skipUnlessDBFeature('can_create_inline_fk')
def test_add_inline_fk_update_data(self):
with connection.schema_editor() as editor:
editor.create_model(Node)
# Add an inline foreign key and update data in the same transaction.
new_field = ForeignKey(Node, CASCADE, related_name='new_fk', null=True)
new_field.set_attributes_from_name('new_parent_fk')
parent = Node.objects.create()
with connection.schema_editor() as editor:
editor.add_field(Node, new_field)
editor.execute('UPDATE schema_node SET new_parent_fk_id = %s;', [parent.pk])
assertIndex = (
self.assertIn
if connection.features.indexes_foreign_keys
else self.assertNotIn
)
assertIndex('new_parent_fk_id', self.get_indexes(Node._meta.db_table))
@skipUnlessDBFeature(
'can_create_inline_fk',
'allows_multiple_constraints_on_same_fields',
)
@isolate_apps('schema')
def test_add_inline_fk_index_update_data(self):
class Node(Model):
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Node)
# Add an inline foreign key, update data, and an index in the same
# transaction.
new_field = ForeignKey(Node, CASCADE, related_name='new_fk', null=True)
new_field.set_attributes_from_name('new_parent_fk')
parent = Node.objects.create()
with connection.schema_editor() as editor:
editor.add_field(Node, new_field)
Node._meta.add_field(new_field)
editor.execute('UPDATE schema_node SET new_parent_fk_id = %s;', [parent.pk])
editor.add_index(Node, Index(fields=['new_parent_fk'], name='new_parent_inline_fk_idx'))
self.assertIn('new_parent_fk_id', self.get_indexes(Node._meta.db_table))
@skipUnlessDBFeature('supports_foreign_keys')
def test_char_field_with_db_index_to_fk(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorCharFieldWithIndex)
# Change CharField to FK
old_field = AuthorCharFieldWithIndex._meta.get_field('char_field')
new_field = ForeignKey(Author, CASCADE, blank=True)
new_field.set_attributes_from_name('char_field')
with connection.schema_editor() as editor:
editor.alter_field(AuthorCharFieldWithIndex, old_field, new_field, strict=True)
self.assertForeignKeyExists(AuthorCharFieldWithIndex, 'char_field_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
@skipUnlessDBFeature('supports_index_on_text_field')
def test_text_field_with_db_index_to_fk(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorTextFieldWithIndex)
# Change TextField to FK
old_field = AuthorTextFieldWithIndex._meta.get_field('text_field')
new_field = ForeignKey(Author, CASCADE, blank=True)
new_field.set_attributes_from_name('text_field')
with connection.schema_editor() as editor:
editor.alter_field(AuthorTextFieldWithIndex, old_field, new_field, strict=True)
self.assertForeignKeyExists(AuthorTextFieldWithIndex, 'text_field_id', 'schema_author')
@isolate_apps('schema')
def test_char_field_pk_to_auto_field(self):
class Foo(Model):
id = CharField(max_length=255, primary_key=True)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Foo
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk_to_proxy(self):
"Creating a FK to a proxy model creates database constraints."
class AuthorProxy(Author):
class Meta:
app_label = 'schema'
apps = new_apps
proxy = True
class AuthorRef(Model):
author = ForeignKey(AuthorProxy, on_delete=CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [AuthorProxy, AuthorRef]
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(AuthorRef)
self.assertForeignKeyExists(AuthorRef, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_fk_db_constraint(self):
"The db_constraint parameter is respected"
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(Author)
editor.create_model(BookWeak)
# Initial tables are there
list(Author.objects.all())
list(Tag.objects.all())
list(BookWeak.objects.all())
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
# Make a db_constraint=False FK
new_field = ForeignKey(Tag, CASCADE, db_constraint=False)
new_field.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
self.assertForeignKeyNotExists(Author, 'tag_id', 'schema_tag')
# Alter to one with a constraint
new_field2 = ForeignKey(Tag, CASCADE)
new_field2.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
self.assertForeignKeyExists(Author, 'tag_id', 'schema_tag')
# Alter to one without a constraint again
new_field2 = ForeignKey(Tag, CASCADE)
new_field2.set_attributes_from_name("tag")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field2, new_field, strict=True)
self.assertForeignKeyNotExists(Author, 'tag_id', 'schema_tag')
@isolate_apps('schema')
def test_no_db_constraint_added_during_primary_key_change(self):
"""
When a primary key that's pointed to by a ForeignKey with
db_constraint=False is altered, a foreign key constraint isn't added.
"""
class Author(Model):
class Meta:
app_label = 'schema'
class BookWeak(Model):
author = ForeignKey(Author, CASCADE, db_constraint=False)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWeak)
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
old_field = Author._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Author
new_field.set_attributes_from_name('id')
# @isolate_apps() and inner models are needed to have the model
# relations populated, otherwise this doesn't act as a regression test.
self.assertEqual(len(new_field.model._meta.related_objects), 1)
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertForeignKeyNotExists(BookWeak, 'author_id', 'schema_author')
def _test_m2m_db_constraint(self, M2MFieldClass):
class LocalAuthorWithM2M(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorWithM2M]
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(LocalAuthorWithM2M)
# Initial tables are there
list(LocalAuthorWithM2M.objects.all())
list(Tag.objects.all())
# Make a db_constraint=False FK
new_field = M2MFieldClass(Tag, related_name="authors", db_constraint=False)
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
# Add the field
with connection.schema_editor() as editor:
editor.add_field(LocalAuthorWithM2M, new_field)
self.assertForeignKeyNotExists(new_field.remote_field.through, 'tag_id', 'schema_tag')
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint(self):
self._test_m2m_db_constraint(ManyToManyField)
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint_custom(self):
self._test_m2m_db_constraint(CustomManyToManyField)
@skipUnlessDBFeature('supports_foreign_keys')
def test_m2m_db_constraint_inherited(self):
self._test_m2m_db_constraint(InheritedManyToManyField)
def test_add_field(self):
"""
Tests adding fields to models
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add the new field
new_field = IntegerField(null=True)
new_field.set_attributes_from_name("age")
with CaptureQueriesContext(connection) as ctx, connection.schema_editor() as editor:
editor.add_field(Author, new_field)
drop_default_sql = editor.sql_alter_column_no_default % {
'column': editor.quote_name(new_field.name),
}
self.assertFalse(any(drop_default_sql in query['sql'] for query in ctx.captured_queries))
# Table is not rebuilt.
self.assertIs(any(
'CREATE TABLE' in query['sql']
for query in ctx.captured_queries
), False)
self.assertIs(any(
'DROP TABLE' in query['sql']
for query in ctx.captured_queries
), False)
columns = self.column_classes(Author)
self.assertEqual(columns['age'][0], connection.features.introspected_field_types['IntegerField'])
self.assertTrue(columns['age'][1][6])
def test_add_field_remove_field(self):
"""
Adding a field and removing it removes all deferred sql referring to it.
"""
with connection.schema_editor() as editor:
# Create a table with a unique constraint on the slug field.
editor.create_model(Tag)
# Remove the slug column.
editor.remove_field(Tag, Tag._meta.get_field('slug'))
self.assertEqual(editor.deferred_sql, [])
def test_add_field_temp_default(self):
"""
Tests adding fields to models with a temporary default
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add a not-null field
new_field = CharField(max_length=30, default="Godwin")
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
self.assertEqual(columns['surname'][0], connection.features.introspected_field_types['CharField'])
self.assertEqual(columns['surname'][1][6],
connection.features.interprets_empty_strings_as_nulls)
def test_add_field_temp_default_boolean(self):
"""
Tests adding fields to models with a temporary default where
the default is False. (#21783)
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no age field
columns = self.column_classes(Author)
self.assertNotIn("age", columns)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add a not-null field
new_field = BooleanField(default=False)
new_field.set_attributes_from_name("awesome")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# BooleanField are stored as TINYINT(1) on MySQL.
field_type = columns['awesome'][0]
self.assertEqual(field_type, connection.features.introspected_field_types['BooleanField'])
def test_add_field_default_transform(self):
"""
Tests adding fields to models with a default that is not directly
valid in the database (#22581)
"""
class TestTransformField(IntegerField):
# Weird field that saves the count of items in its value
def get_default(self):
return self.default
def get_prep_value(self, value):
if value is None:
return 0
return len(value)
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add some rows of data
Author.objects.create(name="Andrew", height=30)
Author.objects.create(name="Andrea")
# Add the field with a default it needs to cast (to string in this case)
new_field = TestTransformField(default={1: 2})
new_field.set_attributes_from_name("thing")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure the field is there
columns = self.column_classes(Author)
field_type, field_info = columns['thing']
self.assertEqual(field_type, connection.features.introspected_field_types['IntegerField'])
# Make sure the values were transformed correctly
self.assertEqual(Author.objects.extra(where=["thing = 1"]).count(), 2)
def test_add_field_binary(self):
"""
Tests binary fields get a sane default (#22851)
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the new field
new_field = BinaryField(blank=True)
new_field.set_attributes_from_name("bits")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# MySQL annoyingly uses the same backend, so it'll come back as one of
# these two types.
self.assertIn(columns['bits'][0], ("BinaryField", "TextField"))
def test_add_field_durationfield_with_default(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
new_field = DurationField(default=datetime.timedelta(minutes=10))
new_field.set_attributes_from_name('duration')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
self.assertEqual(
columns['duration'][0],
connection.features.introspected_field_types['DurationField'],
)
@unittest.skipUnless(connection.vendor == 'mysql', "MySQL specific")
def test_add_binaryfield_mediumblob(self):
"""
Test adding a custom-sized binary field on MySQL (#24846).
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the new field with default
new_field = MediumBlobField(blank=True, default=b'123')
new_field.set_attributes_from_name('bits')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
# Introspection treats BLOBs as TextFields
self.assertEqual(columns['bits'][0], "TextField")
def test_alter(self):
"""
Tests simple altering of fields
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
self.assertEqual(bool(columns['name'][1][6]), bool(connection.features.interprets_empty_strings_as_nulls))
# Alter the name field to a TextField
old_field = Author._meta.get_field("name")
new_field = TextField(null=True)
new_field.set_attributes_from_name("name")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], "TextField")
self.assertTrue(columns['name'][1][6])
# Change nullability again
new_field2 = TextField(null=False)
new_field2.set_attributes_from_name("name")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], "TextField")
self.assertEqual(bool(columns['name'][1][6]), bool(connection.features.interprets_empty_strings_as_nulls))
def test_alter_auto_field_to_integer_field(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change AutoField to IntegerField
old_field = Author._meta.get_field('id')
new_field = IntegerField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
# Now that ID is an IntegerField, the database raises an error if it
# isn't provided.
if not connection.features.supports_unspecified_pk:
with self.assertRaises(DatabaseError):
Author.objects.create()
def test_alter_auto_field_to_char_field(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change AutoField to CharField
old_field = Author._meta.get_field('id')
new_field = CharField(primary_key=True, max_length=50)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
@isolate_apps('schema')
def test_alter_auto_field_quoted_db_column(self):
class Foo(Model):
id = AutoField(primary_key=True, db_column='"quoted_id"')
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Foo
new_field.db_column = '"quoted_id"'
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
Foo.objects.create()
def test_alter_not_unique_field_to_primary_key(self):
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change UUIDField to primary key.
old_field = Author._meta.get_field('uuid')
new_field = UUIDField(primary_key=True)
new_field.set_attributes_from_name('uuid')
new_field.model = Author
with connection.schema_editor() as editor:
editor.remove_field(Author, Author._meta.get_field('id'))
editor.alter_field(Author, old_field, new_field, strict=True)
# Redundant unique constraint is not added.
count = self.get_constraints_count(
Author._meta.db_table,
Author._meta.get_field('uuid').column,
None,
)
self.assertLessEqual(count['uniques'], 1)
@isolate_apps('schema')
def test_alter_primary_key_quoted_db_table(self):
class Foo(Model):
class Meta:
app_label = 'schema'
db_table = '"foo"'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.model = Foo
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
Foo.objects.create()
def test_alter_text_field(self):
# Regression for "BLOB/TEXT column 'info' can't have a default value")
# on MySQL.
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field("info")
new_field = TextField(blank=True)
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
def test_alter_text_field_to_not_null_with_default_value(self):
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field('address')
new_field = TextField(blank=True, default='', null=False)
new_field.set_attributes_from_name('address')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
@skipUnlessDBFeature('can_defer_constraint_checks', 'can_rollback_ddl')
def test_alter_fk_checks_deferred_constraints(self):
"""
#25492 - Altering a foreign key's structure and data in the same
transaction.
"""
with connection.schema_editor() as editor:
editor.create_model(Node)
old_field = Node._meta.get_field('parent')
new_field = ForeignKey(Node, CASCADE)
new_field.set_attributes_from_name('parent')
parent = Node.objects.create()
with connection.schema_editor() as editor:
# Update the parent FK to create a deferred constraint check.
Node.objects.update(parent=parent)
editor.alter_field(Node, old_field, new_field, strict=True)
def test_alter_text_field_to_date_field(self):
"""
#25002 - Test conversion of text field to date field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='1988-05-05')
old_field = Note._meta.get_field('info')
new_field = DateField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
def test_alter_text_field_to_datetime_field(self):
"""
#25002 - Test conversion of text field to datetime field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='1988-05-05 3:16:17.4567')
old_field = Note._meta.get_field('info')
new_field = DateTimeField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
def test_alter_text_field_to_time_field(self):
"""
#25002 - Test conversion of text field to time field.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
Note.objects.create(info='3:16:17.4567')
old_field = Note._meta.get_field('info')
new_field = TimeField(blank=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
# Make sure the field isn't nullable
columns = self.column_classes(Note)
self.assertFalse(columns['info'][1][6])
@skipIfDBFeature('interprets_empty_strings_as_nulls')
def test_alter_textual_field_keep_null_status(self):
"""
Changing a field type shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
old_field = Note._meta.get_field("info")
new_field = CharField(max_length=50)
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
@skipUnlessDBFeature('interprets_empty_strings_as_nulls')
def test_alter_textual_field_not_null_to_null(self):
"""
Nullability for textual fields is preserved on databases that
interpret empty strings as NULLs.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
columns = self.column_classes(Author)
# Field is nullable.
self.assertTrue(columns['uuid'][1][6])
# Change to NOT NULL.
old_field = Author._meta.get_field('uuid')
new_field = SlugField(null=False, blank=True)
new_field.set_attributes_from_name('uuid')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
# Nullability is preserved.
self.assertTrue(columns['uuid'][1][6])
def test_alter_numeric_field_keep_null_status(self):
"""
Changing a field type shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(UniqueTest)
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=None, slug='aaa')
old_field = UniqueTest._meta.get_field("year")
new_field = BigIntegerField()
new_field.set_attributes_from_name("year")
with connection.schema_editor() as editor:
editor.alter_field(UniqueTest, old_field, new_field, strict=True)
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=None, slug='bbb')
def test_alter_null_to_not_null(self):
"""
#23609 - Tests handling of default values when altering from NULL to NOT NULL.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertTrue(columns['height'][1][6])
# Create some test data
Author.objects.create(name='Not null author', height=12)
Author.objects.create(name='Null author')
# Verify null value
self.assertEqual(Author.objects.get(name='Not null author').height, 12)
self.assertIsNone(Author.objects.get(name='Null author').height)
# Alter the height field to NOT NULL with default
old_field = Author._meta.get_field("height")
new_field = PositiveIntegerField(default=42)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertFalse(columns['height'][1][6])
# Verify default value
self.assertEqual(Author.objects.get(name='Not null author').height, 12)
self.assertEqual(Author.objects.get(name='Null author').height, 42)
def test_alter_charfield_to_null(self):
"""
#24307 - Should skip an alter statement on databases with
interprets_empty_strings_as_nulls when changing a CharField to null.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Change the CharField to null
old_field = Author._meta.get_field('name')
new_field = copy(old_field)
new_field.null = True
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_char_field_decrease_length(self):
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
Author.objects.create(name='x' * 255)
# Change max_length of CharField.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=254)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(254)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(Author, old_field, new_field, strict=True)
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_field_with_custom_db_type(self):
from django.contrib.postgres.fields import ArrayField
class Foo(Model):
field = ArrayField(CharField(max_length=255))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.isolated_local_models = [Foo]
old_field = Foo._meta.get_field('field')
new_field = ArrayField(CharField(max_length=16))
new_field.set_attributes_from_name('field')
new_field.model = Foo
with connection.schema_editor() as editor:
editor.alter_field(Foo, old_field, new_field, strict=True)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_array_field_decrease_base_field_length(self):
from django.contrib.postgres.fields import ArrayField
class ArrayModel(Model):
field = ArrayField(CharField(max_length=16))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(ArrayModel)
self.isolated_local_models = [ArrayModel]
ArrayModel.objects.create(field=['x' * 16])
old_field = ArrayModel._meta.get_field('field')
new_field = ArrayField(CharField(max_length=15))
new_field.set_attributes_from_name('field')
new_field.model = ArrayModel
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(15)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific')
def test_alter_array_field_decrease_nested_base_field_length(self):
from django.contrib.postgres.fields import ArrayField
class ArrayModel(Model):
field = ArrayField(ArrayField(CharField(max_length=16)))
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(ArrayModel)
self.isolated_local_models = [ArrayModel]
ArrayModel.objects.create(field=[['x' * 16]])
old_field = ArrayModel._meta.get_field('field')
new_field = ArrayField(ArrayField(CharField(max_length=15)))
new_field.set_attributes_from_name('field')
new_field.model = ArrayModel
with connection.schema_editor() as editor:
msg = 'value too long for type character varying(15)'
with self.assertRaisesMessage(DataError, msg):
editor.alter_field(ArrayModel, old_field, new_field, strict=True)
def test_alter_textfield_to_null(self):
"""
#24307 - Should skip an alter statement on databases with
interprets_empty_strings_as_nulls when changing a TextField to null.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Note)
# Change the TextField to null
old_field = Note._meta.get_field('info')
new_field = copy(old_field)
new_field.null = True
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
def test_alter_null_to_not_null_keeping_default(self):
"""
#23738 - Can change a nullable field with default to non-nullable
with the same default.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(AuthorWithDefaultHeight)
# Ensure the field is right to begin with
columns = self.column_classes(AuthorWithDefaultHeight)
self.assertTrue(columns['height'][1][6])
# Alter the height field to NOT NULL keeping the previous default
old_field = AuthorWithDefaultHeight._meta.get_field("height")
new_field = PositiveIntegerField(default=42)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithDefaultHeight, old_field, new_field, strict=True)
columns = self.column_classes(AuthorWithDefaultHeight)
self.assertFalse(columns['height'][1][6])
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_fk(self):
"""
Tests altering of FKs
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the field is right to begin with
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
# Alter the FK
old_field = Book._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE, editable=False)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_to_fk(self):
"""
#24447 - Tests adding a FK constraint for an existing column
"""
class LocalBook(Model):
author = IntegerField()
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBook]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(LocalBook)
# Ensure no FK constraint exists
constraints = self.get_constraints(LocalBook._meta.db_table)
for details in constraints.values():
if details['foreign_key']:
self.fail('Found an unexpected FK constraint to %s' % details['columns'])
old_field = LocalBook._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(LocalBook, old_field, new_field, strict=True)
self.assertForeignKeyExists(LocalBook, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_o2o_to_fk(self):
"""
#24163 - Tests altering of OneToOneField to ForeignKey
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
# Ensure the field is right to begin with
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is unique
author = Author.objects.create(name="Joe")
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
BookWithO2O.objects.all().delete()
self.assertForeignKeyExists(BookWithO2O, 'author_id', 'schema_author')
# Alter the OneToOneField to ForeignKey
old_field = BookWithO2O._meta.get_field("author")
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is not unique anymore
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_fk_to_o2o(self):
"""
#24163 - Tests altering of ForeignKey to OneToOneField
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the field is right to begin with
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is not unique
author = Author.objects.create(name="Joe")
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
Book.objects.all().delete()
self.assertForeignKeyExists(Book, 'author_id', 'schema_author')
# Alter the ForeignKey to OneToOneField
old_field = Book._meta.get_field("author")
new_field = OneToOneField(Author, CASCADE)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], connection.features.introspected_field_types['IntegerField'])
# Ensure the field is unique now
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
self.assertForeignKeyExists(BookWithO2O, 'author_id', 'schema_author')
def test_alter_field_fk_to_o2o(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
# Check the index is right to begin with.
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
old_field = Book._meta.get_field('author')
new_field = OneToOneField(Author, CASCADE)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The index on ForeignKey is replaced with a unique constraint for OneToOneField.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
def test_alter_field_fk_keeps_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
expected_indexes = 1 if connection.features.indexes_foreign_keys else 0
# Check the index is right to begin with.
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
old_field = Book._meta.get_field('author')
# on_delete changed from CASCADE.
new_field = ForeignKey(Author, PROTECT)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
counts = self.get_constraints_count(
Book._meta.db_table,
Book._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The index remains.
self.assertEqual(
counts,
{'fks': expected_fks, 'uniques': 0, 'indexes': expected_indexes},
)
def test_alter_field_o2o_to_fk(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
# Check the unique constraint is right to begin with.
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
old_field = BookWithO2O._meta.get_field('author')
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The unique constraint on OneToOneField is replaced with an index for ForeignKey.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 0, 'indexes': 1})
def test_alter_field_o2o_keeps_unique(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithO2O)
expected_fks = 1 if connection.features.supports_foreign_keys else 0
# Check the unique constraint is right to begin with.
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
old_field = BookWithO2O._meta.get_field('author')
# on_delete changed from CASCADE.
new_field = OneToOneField(Author, PROTECT)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.alter_field(BookWithO2O, old_field, new_field, strict=True)
counts = self.get_constraints_count(
BookWithO2O._meta.db_table,
BookWithO2O._meta.get_field('author').column,
(Author._meta.db_table, Author._meta.pk.column),
)
# The unique constraint remains.
self.assertEqual(counts, {'fks': expected_fks, 'uniques': 1, 'indexes': 0})
@skipUnlessDBFeature('ignores_table_name_case')
def test_alter_db_table_case(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Alter the case of the table
old_table_name = Author._meta.db_table
with connection.schema_editor() as editor:
editor.alter_db_table(Author, old_table_name, old_table_name.upper())
def test_alter_implicit_id_to_explicit(self):
"""
Should be able to convert an implicit "id" field to an explicit "id"
primary key field.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field("id")
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name("id")
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
# This will fail if DROP DEFAULT is inadvertently executed on this
# field which drops the id sequence, at least on PostgreSQL.
Author.objects.create(name='Foo')
Author.objects.create(name='Bar')
def test_alter_autofield_pk_to_bigautofield_pk_sequence_owner(self):
"""
Converting an implicit PK to BigAutoField(primary_key=True) should keep
a sequence owner on PostgreSQL.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('id')
new_field = BigAutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
Author.objects.create(name='Foo', pk=1)
with connection.cursor() as cursor:
sequence_reset_sqls = connection.ops.sequence_reset_sql(no_style(), [Author])
if sequence_reset_sqls:
cursor.execute(sequence_reset_sqls[0])
# Fail on PostgreSQL if sequence is missing an owner.
self.assertIsNotNone(Author.objects.create(name='Bar'))
def test_alter_autofield_pk_to_smallautofield_pk_sequence_owner(self):
"""
Converting an implicit PK to SmallAutoField(primary_key=True) should
keep a sequence owner on PostgreSQL.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('id')
new_field = SmallAutoField(primary_key=True)
new_field.set_attributes_from_name('id')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
Author.objects.create(name='Foo', pk=1)
with connection.cursor() as cursor:
sequence_reset_sqls = connection.ops.sequence_reset_sql(no_style(), [Author])
if sequence_reset_sqls:
cursor.execute(sequence_reset_sqls[0])
# Fail on PostgreSQL if sequence is missing an owner.
self.assertIsNotNone(Author.objects.create(name='Bar'))
def test_alter_int_pk_to_autofield_pk(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
AutoField(primary_key=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
old_field = IntegerPK._meta.get_field('i')
new_field = AutoField(primary_key=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# A model representing the updated model.
class IntegerPKToAutoField(Model):
i = AutoField(primary_key=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = IntegerPK._meta.db_table
# An id (i) is generated by the database.
obj = IntegerPKToAutoField.objects.create(j=1)
self.assertIsNotNone(obj.i)
def test_alter_int_pk_to_bigautofield_pk(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
BigAutoField(primary_key=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
old_field = IntegerPK._meta.get_field('i')
new_field = BigAutoField(primary_key=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# A model representing the updated model.
class IntegerPKToBigAutoField(Model):
i = BigAutoField(primary_key=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = IntegerPK._meta.db_table
# An id (i) is generated by the database.
obj = IntegerPKToBigAutoField.objects.create(j=1)
self.assertIsNotNone(obj.i)
@isolate_apps('schema')
def test_alter_smallint_pk_to_smallautofield_pk(self):
"""
Should be able to rename an SmallIntegerField(primary_key=True) to
SmallAutoField(primary_key=True).
"""
class SmallIntegerPK(Model):
i = SmallIntegerField(primary_key=True)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(SmallIntegerPK)
self.isolated_local_models = [SmallIntegerPK]
old_field = SmallIntegerPK._meta.get_field('i')
new_field = SmallAutoField(primary_key=True)
new_field.model = SmallIntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(SmallIntegerPK, old_field, new_field, strict=True)
def test_alter_int_pk_to_int_unique(self):
"""
Should be able to rename an IntegerField(primary_key=True) to
IntegerField(unique=True).
"""
with connection.schema_editor() as editor:
editor.create_model(IntegerPK)
# Delete the old PK
old_field = IntegerPK._meta.get_field('i')
new_field = IntegerField(unique=True)
new_field.model = IntegerPK
new_field.set_attributes_from_name('i')
with connection.schema_editor() as editor:
editor.alter_field(IntegerPK, old_field, new_field, strict=True)
# The primary key constraint is gone. Result depends on database:
# 'id' for SQLite, None for others (must not be 'i').
self.assertIn(self.get_primary_key(IntegerPK._meta.db_table), ('id', None))
# Set up a model class as it currently stands. The original IntegerPK
# class is now out of date and some backends make use of the whole
# model class when modifying a field (such as sqlite3 when remaking a
# table) so an outdated model class leads to incorrect results.
class Transitional(Model):
i = IntegerField(unique=True)
j = IntegerField(unique=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = 'INTEGERPK'
# model requires a new PK
old_field = Transitional._meta.get_field('j')
new_field = IntegerField(primary_key=True)
new_field.model = Transitional
new_field.set_attributes_from_name('j')
with connection.schema_editor() as editor:
editor.alter_field(Transitional, old_field, new_field, strict=True)
# Create a model class representing the updated model.
class IntegerUnique(Model):
i = IntegerField(unique=True)
j = IntegerField(primary_key=True)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = 'INTEGERPK'
# Ensure unique constraint works.
IntegerUnique.objects.create(i=1, j=1)
with self.assertRaises(IntegrityError):
IntegerUnique.objects.create(i=1, j=2)
def test_rename(self):
"""
Tests simple altering of fields
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the field is right to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
self.assertNotIn("display_name", columns)
# Alter the name field's name
old_field = Author._meta.get_field("name")
new_field = CharField(max_length=254)
new_field.set_attributes_from_name("display_name")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
columns = self.column_classes(Author)
self.assertEqual(columns['display_name'][0], connection.features.introspected_field_types['CharField'])
self.assertNotIn("name", columns)
@isolate_apps('schema')
def test_rename_referenced_field(self):
class Author(Model):
name = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE, to_field='name')
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_field(Author, Author._meta.get_field('name'), new_field)
# Ensure the foreign key reference was updated.
self.assertForeignKeyExists(Book, 'author_id', 'schema_author', 'renamed')
@skipIfDBFeature('interprets_empty_strings_as_nulls')
def test_rename_keep_null_status(self):
"""
Renaming a field shouldn't affect the not null status.
"""
with connection.schema_editor() as editor:
editor.create_model(Note)
with self.assertRaises(IntegrityError):
Note.objects.create(info=None)
old_field = Note._meta.get_field("info")
new_field = TextField()
new_field.set_attributes_from_name("detail_info")
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(columns['detail_info'][0], "TextField")
self.assertNotIn("info", columns)
with self.assertRaises(IntegrityError):
NoteRename.objects.create(detail_info=None)
def _test_m2m_create(self, M2MFieldClass):
"""
Tests M2M fields on models during creation
"""
class LocalBookWithM2M(Model):
author = ForeignKey(Author, CASCADE)
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
tags = M2MFieldClass("TagM2MTest", related_name="books")
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBookWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(TagM2MTest)
editor.create_model(LocalBookWithM2M)
# Ensure there is now an m2m table there
columns = self.column_classes(LocalBookWithM2M._meta.get_field("tags").remote_field.through)
self.assertEqual(columns['tagm2mtest_id'][0], connection.features.introspected_field_types['IntegerField'])
def test_m2m_create(self):
self._test_m2m_create(ManyToManyField)
def test_m2m_create_custom(self):
self._test_m2m_create(CustomManyToManyField)
def test_m2m_create_inherited(self):
self._test_m2m_create(InheritedManyToManyField)
def _test_m2m_create_through(self, M2MFieldClass):
"""
Tests M2M fields on models during creation with through models
"""
class LocalTagThrough(Model):
book = ForeignKey("schema.LocalBookWithM2MThrough", CASCADE)
tag = ForeignKey("schema.TagM2MTest", CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
class LocalBookWithM2MThrough(Model):
tags = M2MFieldClass("TagM2MTest", related_name="books", through=LocalTagThrough)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalTagThrough, LocalBookWithM2MThrough]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalTagThrough)
editor.create_model(TagM2MTest)
editor.create_model(LocalBookWithM2MThrough)
# Ensure there is now an m2m table there
columns = self.column_classes(LocalTagThrough)
self.assertEqual(columns['book_id'][0], connection.features.introspected_field_types['IntegerField'])
self.assertEqual(columns['tag_id'][0], connection.features.introspected_field_types['IntegerField'])
def test_m2m_create_through(self):
self._test_m2m_create_through(ManyToManyField)
def test_m2m_create_through_custom(self):
self._test_m2m_create_through(CustomManyToManyField)
def test_m2m_create_through_inherited(self):
self._test_m2m_create_through(InheritedManyToManyField)
def _test_m2m(self, M2MFieldClass):
"""
Tests adding/removing M2M fields on models
"""
class LocalAuthorWithM2M(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalAuthorWithM2M)
editor.create_model(TagM2MTest)
# Create an M2M field
new_field = M2MFieldClass("schema.TagM2MTest", related_name="authors")
new_field.contribute_to_class(LocalAuthorWithM2M, "tags")
# Ensure there's no m2m table there
with self.assertRaises(DatabaseError):
self.column_classes(new_field.remote_field.through)
# Add the field
with connection.schema_editor() as editor:
editor.add_field(LocalAuthorWithM2M, new_field)
# Ensure there is now an m2m table there
columns = self.column_classes(new_field.remote_field.through)
self.assertEqual(columns['tagm2mtest_id'][0], connection.features.introspected_field_types['IntegerField'])
# "Alter" the field. This should not rename the DB table to itself.
with connection.schema_editor() as editor:
editor.alter_field(LocalAuthorWithM2M, new_field, new_field, strict=True)
# Remove the M2M table again
with connection.schema_editor() as editor:
editor.remove_field(LocalAuthorWithM2M, new_field)
# Ensure there's no m2m table there
with self.assertRaises(DatabaseError):
self.column_classes(new_field.remote_field.through)
# Make sure the model state is coherent with the table one now that
# we've removed the tags field.
opts = LocalAuthorWithM2M._meta
opts.local_many_to_many.remove(new_field)
del new_apps.all_models['schema'][new_field.remote_field.through._meta.model_name]
opts._expire_cache()
def test_m2m(self):
self._test_m2m(ManyToManyField)
def test_m2m_custom(self):
self._test_m2m(CustomManyToManyField)
def test_m2m_inherited(self):
self._test_m2m(InheritedManyToManyField)
def _test_m2m_through_alter(self, M2MFieldClass):
"""
Tests altering M2Ms with explicit through models (should no-op)
"""
class LocalAuthorTag(Model):
author = ForeignKey("schema.LocalAuthorWithM2MThrough", CASCADE)
tag = ForeignKey("schema.TagM2MTest", CASCADE)
class Meta:
app_label = 'schema'
apps = new_apps
class LocalAuthorWithM2MThrough(Model):
name = CharField(max_length=255)
tags = M2MFieldClass("schema.TagM2MTest", related_name="authors", through=LocalAuthorTag)
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalAuthorTag, LocalAuthorWithM2MThrough]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(LocalAuthorTag)
editor.create_model(LocalAuthorWithM2MThrough)
editor.create_model(TagM2MTest)
# Ensure the m2m table is there
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
# "Alter" the field's blankness. This should not actually do anything.
old_field = LocalAuthorWithM2MThrough._meta.get_field("tags")
new_field = M2MFieldClass("schema.TagM2MTest", related_name="authors", through=LocalAuthorTag)
new_field.contribute_to_class(LocalAuthorWithM2MThrough, "tags")
with connection.schema_editor() as editor:
editor.alter_field(LocalAuthorWithM2MThrough, old_field, new_field, strict=True)
# Ensure the m2m table is still there
self.assertEqual(len(self.column_classes(LocalAuthorTag)), 3)
def test_m2m_through_alter(self):
self._test_m2m_through_alter(ManyToManyField)
def test_m2m_through_alter_custom(self):
self._test_m2m_through_alter(CustomManyToManyField)
def test_m2m_through_alter_inherited(self):
self._test_m2m_through_alter(InheritedManyToManyField)
def _test_m2m_repoint(self, M2MFieldClass):
"""
Tests repointing M2M fields
"""
class LocalBookWithM2M(Model):
author = ForeignKey(Author, CASCADE)
title = CharField(max_length=100, db_index=True)
pub_date = DateTimeField()
tags = M2MFieldClass("TagM2MTest", related_name="books")
class Meta:
app_label = 'schema'
apps = new_apps
self.local_models = [LocalBookWithM2M]
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(LocalBookWithM2M)
editor.create_model(TagM2MTest)
editor.create_model(UniqueTest)
# Ensure the M2M exists and points to TagM2MTest
if connection.features.supports_foreign_keys:
self.assertForeignKeyExists(
LocalBookWithM2M._meta.get_field("tags").remote_field.through,
'tagm2mtest_id',
'schema_tagm2mtest',
)
# Repoint the M2M
old_field = LocalBookWithM2M._meta.get_field("tags")
new_field = M2MFieldClass(UniqueTest)
new_field.contribute_to_class(LocalBookWithM2M, "uniques")
with connection.schema_editor() as editor:
editor.alter_field(LocalBookWithM2M, old_field, new_field, strict=True)
# Ensure old M2M is gone
with self.assertRaises(DatabaseError):
self.column_classes(LocalBookWithM2M._meta.get_field("tags").remote_field.through)
# This model looks like the new model and is used for teardown.
opts = LocalBookWithM2M._meta
opts.local_many_to_many.remove(old_field)
# Ensure the new M2M exists and points to UniqueTest
if connection.features.supports_foreign_keys:
self.assertForeignKeyExists(new_field.remote_field.through, 'uniquetest_id', 'schema_uniquetest')
def test_m2m_repoint(self):
self._test_m2m_repoint(ManyToManyField)
def test_m2m_repoint_custom(self):
self._test_m2m_repoint(CustomManyToManyField)
def test_m2m_repoint_inherited(self):
self._test_m2m_repoint(InheritedManyToManyField)
@isolate_apps('schema')
def test_m2m_rename_field_in_target_model(self):
class LocalTagM2MTest(Model):
title = CharField(max_length=255)
class Meta:
app_label = 'schema'
class LocalM2M(Model):
tags = ManyToManyField(LocalTagM2MTest)
class Meta:
app_label = 'schema'
# Create the tables.
with connection.schema_editor() as editor:
editor.create_model(LocalM2M)
editor.create_model(LocalTagM2MTest)
self.isolated_local_models = [LocalM2M, LocalTagM2MTest]
# Ensure the m2m table is there.
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
# Alter a field in LocalTagM2MTest.
old_field = LocalTagM2MTest._meta.get_field('title')
new_field = CharField(max_length=254)
new_field.contribute_to_class(LocalTagM2MTest, 'title1')
# @isolate_apps() and inner models are needed to have the model
# relations populated, otherwise this doesn't act as a regression test.
self.assertEqual(len(new_field.model._meta.related_objects), 1)
with connection.schema_editor() as editor:
editor.alter_field(LocalTagM2MTest, old_field, new_field, strict=True)
# Ensure the m2m table is still there.
self.assertEqual(len(self.column_classes(LocalM2M)), 1)
@skipUnlessDBFeature('supports_column_check_constraints', 'can_introspect_check_constraints')
def test_check_constraints(self):
"""
Tests creating/deleting CHECK constraints
"""
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the constraint exists
constraints = self.get_constraints(Author._meta.db_table)
if not any(details['columns'] == ['height'] and details['check'] for details in constraints.values()):
self.fail("No check constraint for height found")
# Alter the column to remove it
old_field = Author._meta.get_field("height")
new_field = IntegerField(null=True, blank=True)
new_field.set_attributes_from_name("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
for details in constraints.values():
if details['columns'] == ["height"] and details['check']:
self.fail("Check constraint for height found")
# Alter the column to re-add it
new_field2 = Author._meta.get_field("height")
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
if not any(details['columns'] == ['height'] and details['check'] for details in constraints.values()):
self.fail("No check constraint for height found")
@skipUnlessDBFeature('supports_column_check_constraints', 'can_introspect_check_constraints')
@isolate_apps('schema')
def test_check_constraint_timedelta_param(self):
class DurationModel(Model):
duration = DurationField()
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(DurationModel)
self.isolated_local_models = [DurationModel]
constraint_name = 'duration_gte_5_minutes'
constraint = CheckConstraint(
check=Q(duration__gt=datetime.timedelta(minutes=5)),
name=constraint_name,
)
DurationModel._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(DurationModel, constraint)
constraints = self.get_constraints(DurationModel._meta.db_table)
self.assertIn(constraint_name, constraints)
with self.assertRaises(IntegrityError), atomic():
DurationModel.objects.create(duration=datetime.timedelta(minutes=4))
DurationModel.objects.create(duration=datetime.timedelta(minutes=10))
@skipUnlessDBFeature('supports_column_check_constraints', 'can_introspect_check_constraints')
def test_remove_field_check_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add the custom check constraint
constraint = CheckConstraint(check=Q(height__gte=0), name='author_height_gte_0_check')
custom_constraint_name = constraint.name
Author._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Alter the column to remove field check
old_field = Author._meta.get_field('height')
new_field = IntegerField(null=True, blank=True)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Alter the column to re-add field check
new_field2 = Author._meta.get_field('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field2, strict=True)
constraints = self.get_constraints(Author._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['height'] and details['check'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the check constraint
with connection.schema_editor() as editor:
Author._meta.constraints = []
editor.remove_constraint(Author, constraint)
def test_unique(self):
"""
Tests removing and adding unique constraints to a single column.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure the field is unique to begin with
Tag.objects.create(title="foo", slug="foo")
with self.assertRaises(IntegrityError):
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Alter the slug field to be non-unique
old_field = Tag._meta.get_field("slug")
new_field = SlugField(unique=False)
new_field.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(Tag, old_field, new_field, strict=True)
# Ensure the field is no longer unique
Tag.objects.create(title="foo", slug="foo")
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Alter the slug field to be unique
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field, new_field2, strict=True)
# Ensure the field is unique again
Tag.objects.create(title="foo", slug="foo")
with self.assertRaises(IntegrityError):
Tag.objects.create(title="bar", slug="foo")
Tag.objects.all().delete()
# Rename the field
new_field3 = SlugField(unique=True)
new_field3.set_attributes_from_name("slug2")
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field2, new_field3, strict=True)
# Ensure the field is still unique
TagUniqueRename.objects.create(title="foo", slug2="foo")
with self.assertRaises(IntegrityError):
TagUniqueRename.objects.create(title="bar", slug2="foo")
Tag.objects.all().delete()
def test_unique_name_quoting(self):
old_table_name = TagUniqueRename._meta.db_table
try:
with connection.schema_editor() as editor:
editor.create_model(TagUniqueRename)
editor.alter_db_table(TagUniqueRename, old_table_name, 'unique-table')
TagUniqueRename._meta.db_table = 'unique-table'
# This fails if the unique index name isn't quoted.
editor.alter_unique_together(TagUniqueRename, [], (('title', 'slug2'),))
finally:
TagUniqueRename._meta.db_table = old_table_name
@isolate_apps('schema')
@skipUnlessDBFeature('supports_foreign_keys')
def test_unique_no_unnecessary_fk_drops(self):
"""
If AlterField isn't selective about dropping foreign key constraints
when modifying a field with a unique constraint, the AlterField
incorrectly drops and recreates the Book.author foreign key even though
it doesn't restrict the field being changed (#29193).
"""
class Author(Model):
name = CharField(max_length=254, unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
new_field = CharField(max_length=255, unique=True)
new_field.model = Author
new_field.set_attributes_from_name('name')
with self.assertLogs('django.db.backends.schema', 'DEBUG') as cm:
with connection.schema_editor() as editor:
editor.alter_field(Author, Author._meta.get_field('name'), new_field)
# One SQL statement is executed to alter the field.
self.assertEqual(len(cm.records), 1)
@isolate_apps('schema')
def test_unique_and_reverse_m2m(self):
"""
AlterField can modify a unique field when there's a reverse M2M
relation on the model.
"""
class Tag(Model):
title = CharField(max_length=255)
slug = SlugField(unique=True)
class Meta:
app_label = 'schema'
class Book(Model):
tags = ManyToManyField(Tag, related_name='books')
class Meta:
app_label = 'schema'
self.isolated_local_models = [Book._meta.get_field('tags').remote_field.through]
with connection.schema_editor() as editor:
editor.create_model(Tag)
editor.create_model(Book)
new_field = SlugField(max_length=75, unique=True)
new_field.model = Tag
new_field.set_attributes_from_name('slug')
with self.assertLogs('django.db.backends.schema', 'DEBUG') as cm:
with connection.schema_editor() as editor:
editor.alter_field(Tag, Tag._meta.get_field('slug'), new_field)
# One SQL statement is executed to alter the field.
self.assertEqual(len(cm.records), 1)
# Ensure that the field is still unique.
Tag.objects.create(title='foo', slug='foo')
with self.assertRaises(IntegrityError):
Tag.objects.create(title='bar', slug='foo')
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_field_unique_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithUniqueName)
# Add the custom unique constraint
constraint = UniqueConstraint(fields=['name'], name='author_name_uniq')
custom_constraint_name = constraint.name
AuthorWithUniqueName._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(AuthorWithUniqueName, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Alter the column to remove field uniqueness
old_field = AuthorWithUniqueName._meta.get_field('name')
new_field = CharField(max_length=255)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithUniqueName, old_field, new_field, strict=True)
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Alter the column to re-add field uniqueness
new_field2 = AuthorWithUniqueName._meta.get_field('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithUniqueName, new_field, new_field2, strict=True)
constraints = self.get_constraints(AuthorWithUniqueName._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the unique constraint
with connection.schema_editor() as editor:
AuthorWithUniqueName._meta.constraints = []
editor.remove_constraint(AuthorWithUniqueName, constraint)
def test_unique_together(self):
"""
Tests removing and adding unique_together constraints on a model.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(UniqueTest)
# Ensure the fields are unique to begin with
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.create(year=2011, slug="foo")
UniqueTest.objects.create(year=2011, slug="bar")
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
# Alter the model to its non-unique-together companion
with connection.schema_editor() as editor:
editor.alter_unique_together(UniqueTest, UniqueTest._meta.unique_together, [])
# Ensure the fields are no longer unique
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
# Alter it back
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_unique_together(UniqueTest, [], UniqueTest._meta.unique_together)
# Ensure the fields are unique again
UniqueTest.objects.create(year=2012, slug="foo")
with self.assertRaises(IntegrityError):
UniqueTest.objects.create(year=2012, slug="foo")
UniqueTest.objects.all().delete()
def test_unique_together_with_fk(self):
"""
Tests removing and adding unique_together constraints that include
a foreign key.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the fields are unique to begin with
self.assertEqual(Book._meta.unique_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [['author', 'title']], [])
def test_unique_together_with_fk_with_existing_index(self):
"""
Tests removing and adding unique_together constraints that include
a foreign key, where the foreign key is added after the model is
created.
"""
# Create the tables
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithoutAuthor)
new_field = ForeignKey(Author, CASCADE)
new_field.set_attributes_from_name('author')
editor.add_field(BookWithoutAuthor, new_field)
# Ensure the fields aren't unique to begin with
self.assertEqual(Book._meta.unique_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_unique_together(Book, [['author', 'title']], [])
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_unique_together_does_not_remove_meta_constraints(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithUniqueNameAndBirthday)
# Add the custom unique constraint
constraint = UniqueConstraint(fields=['name', 'birthday'], name='author_name_birthday_uniq')
custom_constraint_name = constraint.name
AuthorWithUniqueNameAndBirthday._meta.constraints = [constraint]
with connection.schema_editor() as editor:
editor.add_constraint(AuthorWithUniqueNameAndBirthday, constraint)
# Ensure the constraints exist
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Remove unique together
unique_together = AuthorWithUniqueNameAndBirthday._meta.unique_together
with connection.schema_editor() as editor:
editor.alter_unique_together(AuthorWithUniqueNameAndBirthday, unique_together, [])
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 0)
# Re-add unique together
with connection.schema_editor() as editor:
editor.alter_unique_together(AuthorWithUniqueNameAndBirthday, [], unique_together)
constraints = self.get_constraints(AuthorWithUniqueNameAndBirthday._meta.db_table)
self.assertIn(custom_constraint_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['unique'] and name != custom_constraint_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the unique constraint
with connection.schema_editor() as editor:
AuthorWithUniqueNameAndBirthday._meta.constraints = []
editor.remove_constraint(AuthorWithUniqueNameAndBirthday, constraint)
def test_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(fields=['name'], name='name_uq')
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIs(sql.references_table(table), True)
self.assertIs(sql.references_column(table, 'name'), True)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(Upper('name').desc(), name='func_upper_uq')
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC'])
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains a database function.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_unique_constraint(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
constraint = UniqueConstraint(
Upper('title'),
Lower('slug'),
name='func_upper_lower_unq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(BookWithSlug, constraint)
sql = constraint.create_sql(BookWithSlug, editor)
table = BookWithSlug._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains database functions.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
sql = str(sql)
self.assertIn('UPPER(%s)' % editor.quote_name('title'), sql)
self.assertIn('LOWER(%s)' % editor.quote_name('slug'), sql)
self.assertLess(sql.index('UPPER'), sql.index('LOWER'))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(BookWithSlug, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_unique_constraint_field_and_expression(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
F('height').desc(),
'uuid',
Lower('name').asc(),
name='func_f_lower_field_unq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC', 'ASC', 'ASC'])
constraints = self.get_constraints(table)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertEqual(len(constraints[constraint.name]['columns']), 3)
self.assertEqual(constraints[constraint.name]['columns'][1], 'uuid')
# SQL contains database functions and columns.
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'uuid'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_partial_indexes')
def test_func_unique_constraint_partial(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
Upper('name'),
name='func_upper_cond_weight_uq',
condition=Q(weight__isnull=False),
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
self.assertIn(
'WHERE %s IS NOT NULL' % editor.quote_name('weight'),
str(sql),
)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_covering_indexes')
def test_func_unique_constraint_covering(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(
Upper('name'),
name='func_upper_covering_uq',
include=['weight', 'height'],
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
self.assertEqual(
constraints[constraint.name]['columns'],
[None, 'weight', 'height'],
)
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), str(sql))
self.assertIn(
'INCLUDE (%s, %s)' % (
editor.quote_name('weight'),
editor.quote_name('height'),
),
str(sql),
)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_lookups(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
constraint = UniqueConstraint(
F('name__lower'),
F('weight__abs'),
name='func_lower_abs_lookup_uq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
sql = constraint.create_sql(Author, editor)
table = Author._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
# SQL contains columns.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(Author, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_collate(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
constraint = UniqueConstraint(
Collate(F('title'), collation=collation).desc(),
Collate('slug', collation=collation),
name='func_collate_uq',
)
# Add constraint.
with connection.schema_editor() as editor:
editor.add_constraint(BookWithSlug, constraint)
sql = constraint.create_sql(BookWithSlug, editor)
table = BookWithSlug._meta.db_table
constraints = self.get_constraints(table)
self.assertIn(constraint.name, constraints)
self.assertIs(constraints[constraint.name]['unique'], True)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, constraint.name, ['DESC', 'ASC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove constraint.
with connection.schema_editor() as editor:
editor.remove_constraint(BookWithSlug, constraint)
self.assertNotIn(constraint.name, self.get_constraints(table))
@skipIfDBFeature('supports_expression_indexes')
def test_func_unique_constraint_unsupported(self):
# UniqueConstraint is ignored on databases that don't support indexes on
# expressions.
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(F('name'), name='func_name_uq')
with connection.schema_editor() as editor, self.assertNumQueries(0):
self.assertIsNone(editor.add_constraint(Author, constraint))
self.assertIsNone(editor.remove_constraint(Author, constraint))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_nonexistent_field(self):
constraint = UniqueConstraint(Lower('nonexistent'), name='func_nonexistent_uq')
msg = (
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
"height, id, name, uuid, weight"
)
with self.assertRaisesMessage(FieldError, msg):
with connection.schema_editor() as editor:
editor.add_constraint(Author, constraint)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_unique_constraint_nondeterministic(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
constraint = UniqueConstraint(Random(), name='func_random_uq')
with connection.schema_editor() as editor:
with self.assertRaises(DatabaseError):
editor.add_constraint(Author, constraint)
def test_index_together(self):
"""
Tests removing and adding index_together constraints on a model.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure there's no index on the year/slug columns first
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
False,
)
# Alter the model to add an index
with connection.schema_editor() as editor:
editor.alter_index_together(Tag, [], [("slug", "title")])
# Ensure there is now an index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
True,
)
# Alter it back
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_index_together(Tag, [("slug", "title")], [])
# Ensure there's no index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tag").values()
if c['columns'] == ["slug", "title"]
),
False,
)
def test_index_together_with_fk(self):
"""
Tests removing and adding index_together constraints that include
a foreign key.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the fields are unique to begin with
self.assertEqual(Book._meta.index_together, ())
# Add the unique_together constraint
with connection.schema_editor() as editor:
editor.alter_index_together(Book, [], [['author', 'title']])
# Alter it back
with connection.schema_editor() as editor:
editor.alter_index_together(Book, [['author', 'title']], [])
def test_create_index_together(self):
"""
Tests creating models with index_together already defined
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(TagIndexed)
# Ensure there is an index
self.assertIs(
any(
c["index"]
for c in self.get_constraints("schema_tagindexed").values()
if c['columns'] == ["slug", "title"]
),
True,
)
@skipUnlessDBFeature('allows_multiple_constraints_on_same_fields')
def test_remove_index_together_does_not_remove_meta_indexes(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorWithIndexedNameAndBirthday)
# Add the custom index
index = Index(fields=['name', 'birthday'], name='author_name_birthday_idx')
custom_index_name = index.name
AuthorWithIndexedNameAndBirthday._meta.indexes = [index]
with connection.schema_editor() as editor:
editor.add_index(AuthorWithIndexedNameAndBirthday, index)
# Ensure the indexes exist
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 1)
# Remove index together
index_together = AuthorWithIndexedNameAndBirthday._meta.index_together
with connection.schema_editor() as editor:
editor.alter_index_together(AuthorWithIndexedNameAndBirthday, index_together, [])
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 0)
# Re-add index together
with connection.schema_editor() as editor:
editor.alter_index_together(AuthorWithIndexedNameAndBirthday, [], index_together)
constraints = self.get_constraints(AuthorWithIndexedNameAndBirthday._meta.db_table)
self.assertIn(custom_index_name, constraints)
other_constraints = [
name for name, details in constraints.items()
if details['columns'] == ['name', 'birthday'] and details['index'] and name != custom_index_name
]
self.assertEqual(len(other_constraints), 1)
# Drop the index
with connection.schema_editor() as editor:
AuthorWithIndexedNameAndBirthday._meta.indexes = []
editor.remove_index(AuthorWithIndexedNameAndBirthday, index)
@isolate_apps('schema')
def test_db_table(self):
"""
Tests renaming of the table
"""
class Author(Model):
name = CharField(max_length=255)
class Meta:
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
# Create the table and one referring it.
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the table is there to begin with
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
# Alter the table
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_db_table(Author, "schema_author", "schema_otherauthor")
Author._meta.db_table = "schema_otherauthor"
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
# Ensure the foreign key reference was updated
self.assertForeignKeyExists(Book, "author_id", "schema_otherauthor")
# Alter the table again
with connection.schema_editor(atomic=connection.features.supports_atomic_references_rename) as editor:
editor.alter_db_table(Author, "schema_otherauthor", "schema_author")
# Ensure the table is still there
Author._meta.db_table = "schema_author"
columns = self.column_classes(Author)
self.assertEqual(columns['name'][0], connection.features.introspected_field_types['CharField'])
def test_add_remove_index(self):
"""
Tests index addition and removal
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure the table is there and has no index
self.assertNotIn('title', self.get_indexes(Author._meta.db_table))
# Add the index
index = Index(fields=['name'], name='author_title_idx')
with connection.schema_editor() as editor:
editor.add_index(Author, index)
self.assertIn('name', self.get_indexes(Author._meta.db_table))
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn('name', self.get_indexes(Author._meta.db_table))
def test_remove_db_index_doesnt_remove_custom_indexes(self):
"""
Changing db_index to False doesn't remove indexes from Meta.indexes.
"""
with connection.schema_editor() as editor:
editor.create_model(AuthorWithIndexedName)
# Ensure the table has its index
self.assertIn('name', self.get_indexes(AuthorWithIndexedName._meta.db_table))
# Add the custom index
index = Index(fields=['-name'], name='author_name_idx')
author_index_name = index.name
with connection.schema_editor() as editor:
db_index_name = editor._create_index_name(
table_name=AuthorWithIndexedName._meta.db_table,
column_names=('name',),
)
try:
AuthorWithIndexedName._meta.indexes = [index]
with connection.schema_editor() as editor:
editor.add_index(AuthorWithIndexedName, index)
old_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
self.assertIn(author_index_name, old_constraints)
self.assertIn(db_index_name, old_constraints)
# Change name field to db_index=False
old_field = AuthorWithIndexedName._meta.get_field('name')
new_field = CharField(max_length=255)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(AuthorWithIndexedName, old_field, new_field, strict=True)
new_constraints = self.get_constraints(AuthorWithIndexedName._meta.db_table)
self.assertNotIn(db_index_name, new_constraints)
# The index from Meta.indexes is still in the database.
self.assertIn(author_index_name, new_constraints)
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(AuthorWithIndexedName, index)
finally:
AuthorWithIndexedName._meta.indexes = []
def test_order_index(self):
"""
Indexes defined with ordering (ASC/DESC) defined on column
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
# The table doesn't have an index
self.assertNotIn('title', self.get_indexes(Author._meta.db_table))
index_name = 'author_name_idx'
# Add the index
index = Index(fields=['name', '-weight'], name=index_name)
with connection.schema_editor() as editor:
editor.add_index(Author, index)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(Author._meta.db_table, index_name, ['ASC', 'DESC'])
# Drop the index
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
def test_indexes(self):
"""
Tests creation/altering of indexes
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
# Ensure the table is there and has the right index
self.assertIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Alter to remove the index
old_field = Book._meta.get_field("title")
new_field = CharField(max_length=100, db_index=False)
new_field.set_attributes_from_name("title")
with connection.schema_editor() as editor:
editor.alter_field(Book, old_field, new_field, strict=True)
# Ensure the table is there and has no index
self.assertNotIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Alter to re-add the index
new_field2 = Book._meta.get_field("title")
with connection.schema_editor() as editor:
editor.alter_field(Book, new_field, new_field2, strict=True)
# Ensure the table is there and has the index again
self.assertIn(
"title",
self.get_indexes(Book._meta.db_table),
)
# Add a unique column, verify that creates an implicit index
new_field3 = BookWithSlug._meta.get_field("slug")
with connection.schema_editor() as editor:
editor.add_field(Book, new_field3)
self.assertIn(
"slug",
self.get_uniques(Book._meta.db_table),
)
# Remove the unique, check the index goes with it
new_field4 = CharField(max_length=20, unique=False)
new_field4.set_attributes_from_name("slug")
with connection.schema_editor() as editor:
editor.alter_field(BookWithSlug, new_field3, new_field4, strict=True)
self.assertNotIn(
"slug",
self.get_uniques(Book._meta.db_table),
)
def test_text_field_with_db_index(self):
with connection.schema_editor() as editor:
editor.create_model(AuthorTextFieldWithIndex)
# The text_field index is present if the database supports it.
assertion = self.assertIn if connection.features.supports_index_on_text_field else self.assertNotIn
assertion('text_field', self.get_indexes(AuthorTextFieldWithIndex._meta.db_table))
def _index_expressions_wrappers(self):
index_expression = IndexExpression()
index_expression.set_wrapper_classes(connection)
return ', '.join([
wrapper_cls.__qualname__ for wrapper_cls in index_expression.wrapper_classes
])
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_multiple_wrapper_references(self):
index = Index(OrderBy(F('name').desc(), descending=True), name='name')
msg = (
"Multiple references to %s can't be used in an indexed expression."
% self._index_expressions_wrappers()
)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, msg):
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_invalid_topmost_expressions(self):
index = Index(Upper(F('name').desc()), name='name')
msg = (
'%s must be topmost expressions in an indexed expression.'
% self._index_expressions_wrappers()
)
with connection.schema_editor() as editor:
with self.assertRaisesMessage(ValueError, msg):
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Lower('name').desc(), name='func_lower_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC'])
# SQL contains a database function.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_f(self):
with connection.schema_editor() as editor:
editor.create_model(Tag)
index = Index('slug', F('title').desc(), name='func_f_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Tag, index)
sql = index.create_sql(Tag, editor)
table = Tag._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(Tag._meta.db_table, index.name, ['ASC', 'DESC'])
# SQL contains columns.
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIs(sql.references_column(table, 'title'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Tag, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_lookups(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
with register_lookup(CharField, Lower), register_lookup(IntegerField, Abs):
index = Index(
F('name__lower'),
F('weight__abs'),
name='func_lower_abs_lookup_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains columns.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Lower('name'), Upper('name'), name='func_lower_upper_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains database functions.
self.assertIs(sql.references_column(table, 'name'), True)
sql = str(sql)
self.assertIn('LOWER(%s)' % editor.quote_name('name'), sql)
self.assertIn('UPPER(%s)' % editor.quote_name('name'), sql)
self.assertLess(sql.index('LOWER'), sql.index('UPPER'))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_composite_func_index_field_and_expression(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
index = Index(
F('author').desc(),
Lower('title').asc(),
'pub_date',
name='func_f_lower_field_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Book, index)
sql = index.create_sql(Book, editor)
table = Book._meta.db_table
constraints = self.get_constraints(table)
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC', 'ASC', 'ASC'])
self.assertEqual(len(constraints[index.name]['columns']), 3)
self.assertEqual(constraints[index.name]['columns'][2], 'pub_date')
# SQL contains database functions and columns.
self.assertIs(sql.references_column(table, 'author_id'), True)
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'pub_date'), True)
self.assertIn('LOWER(%s)' % editor.quote_name('title'), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Book, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
@isolate_apps('schema')
def test_func_index_f_decimalfield(self):
class Node(Model):
value = DecimalField(max_digits=5, decimal_places=2)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Node)
index = Index(F('value'), name='func_f_decimalfield_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Node, index)
sql = index.create_sql(Node, editor)
table = Node._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'value'), True)
# SQL doesn't contain casting.
self.assertNotIn('CAST', str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Node, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_cast(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Cast('weight', FloatField()), name='func_cast_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'weight'), True)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_collate(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(BookWithSlug)
index = Index(
Collate(F('title'), collation=collation).desc(),
Collate('slug', collation=collation),
name='func_collate_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(BookWithSlug, index)
sql = index.create_sql(BookWithSlug, editor)
table = Book._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC', 'ASC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'title'), True)
self.assertIs(sql.references_column(table, 'slug'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Book, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
@skipIfDBFeature('collate_as_index_expression')
def test_func_index_collate_f_ordered(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest(
'This backend does not support case-insensitive collations.'
)
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(
Collate(F('name').desc(), collation=collation),
name='func_collate_f_desc_idx',
)
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
if connection.features.supports_index_column_ordering:
self.assertIndexOrder(table, index.name, ['DESC'])
# SQL contains columns and a collation.
self.assertIs(sql.references_column(table, 'name'), True)
self.assertIn('COLLATE %s' % editor.quote_name(collation), str(sql))
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_calc(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(F('height') / (F('weight') + Value(5)), name='func_calc_idx')
# Add index.
with connection.schema_editor() as editor:
editor.add_index(Author, index)
sql = index.create_sql(Author, editor)
table = Author._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
# SQL contains columns and expressions.
self.assertIs(sql.references_column(table, 'height'), True)
self.assertIs(sql.references_column(table, 'weight'), True)
sql = str(sql)
self.assertIs(
sql.index(editor.quote_name('height')) <
sql.index('/') <
sql.index(editor.quote_name('weight')) <
sql.index('+') <
sql.index('5'),
True,
)
# Remove index.
with connection.schema_editor() as editor:
editor.remove_index(Author, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_json_field')
@isolate_apps('schema')
def test_func_index_json_key_transform(self):
class JSONModel(Model):
field = JSONField()
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(JSONModel)
self.isolated_local_models = [JSONModel]
index = Index('field__some_key', name='func_json_key_idx')
with connection.schema_editor() as editor:
editor.add_index(JSONModel, index)
sql = index.create_sql(JSONModel, editor)
table = JSONModel._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'field'), True)
with connection.schema_editor() as editor:
editor.remove_index(JSONModel, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipUnlessDBFeature('supports_expression_indexes', 'supports_json_field')
@isolate_apps('schema')
def test_func_index_json_key_transform_cast(self):
class JSONModel(Model):
field = JSONField()
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(JSONModel)
self.isolated_local_models = [JSONModel]
index = Index(
Cast(KeyTextTransform('some_key', 'field'), IntegerField()),
name='func_json_key_cast_idx',
)
with connection.schema_editor() as editor:
editor.add_index(JSONModel, index)
sql = index.create_sql(JSONModel, editor)
table = JSONModel._meta.db_table
self.assertIn(index.name, self.get_constraints(table))
self.assertIs(sql.references_column(table, 'field'), True)
with connection.schema_editor() as editor:
editor.remove_index(JSONModel, index)
self.assertNotIn(index.name, self.get_constraints(table))
@skipIfDBFeature('supports_expression_indexes')
def test_func_index_unsupported(self):
# Index is ignored on databases that don't support indexes on
# expressions.
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(F('name'), name='random_idx')
with connection.schema_editor() as editor, self.assertNumQueries(0):
self.assertIsNone(editor.add_index(Author, index))
self.assertIsNone(editor.remove_index(Author, index))
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_nonexistent_field(self):
index = Index(Lower('nonexistent'), name='func_nonexistent_idx')
msg = (
"Cannot resolve keyword 'nonexistent' into field. Choices are: "
"height, id, name, uuid, weight"
)
with self.assertRaisesMessage(FieldError, msg):
with connection.schema_editor() as editor:
editor.add_index(Author, index)
@skipUnlessDBFeature('supports_expression_indexes')
def test_func_index_nondeterministic(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
index = Index(Random(), name='func_random_idx')
with connection.schema_editor() as editor:
with self.assertRaises(DatabaseError):
editor.add_index(Author, index)
def test_primary_key(self):
"""
Tests altering of the primary key
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Tag)
# Ensure the table is there and has the right PK
self.assertEqual(self.get_primary_key(Tag._meta.db_table), 'id')
# Alter to change the PK
id_field = Tag._meta.get_field("id")
old_field = Tag._meta.get_field("slug")
new_field = SlugField(primary_key=True)
new_field.set_attributes_from_name("slug")
new_field.model = Tag
with connection.schema_editor() as editor:
editor.remove_field(Tag, id_field)
editor.alter_field(Tag, old_field, new_field)
# Ensure the PK changed
self.assertNotIn(
'id',
self.get_indexes(Tag._meta.db_table),
)
self.assertEqual(self.get_primary_key(Tag._meta.db_table), 'slug')
def test_context_manager_exit(self):
"""
Ensures transaction is correctly closed when an error occurs
inside a SchemaEditor context.
"""
class SomeError(Exception):
pass
try:
with connection.schema_editor():
raise SomeError
except SomeError:
self.assertFalse(connection.in_atomic_block)
@skipIfDBFeature('can_rollback_ddl')
def test_unsupported_transactional_ddl_disallowed(self):
message = (
"Executing DDL statements while in a transaction on databases "
"that can't perform a rollback is prohibited."
)
with atomic(), connection.schema_editor() as editor:
with self.assertRaisesMessage(TransactionManagementError, message):
editor.execute(editor.sql_create_table % {'table': 'foo', 'definition': ''})
@skipUnlessDBFeature('supports_foreign_keys', 'indexes_foreign_keys')
def test_foreign_key_index_long_names_regression(self):
"""
Regression test for #21497.
Only affects databases that supports foreign keys.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(AuthorWithEvenLongerName)
editor.create_model(BookWithLongName)
# Find the properly shortened column name
column_name = connection.ops.quote_name("author_foreign_key_with_really_long_field_name_id")
column_name = column_name[1:-1].lower() # unquote, and, for Oracle, un-upcase
# Ensure the table is there and has an index on the column
self.assertIn(
column_name,
self.get_indexes(BookWithLongName._meta.db_table),
)
@skipUnlessDBFeature('supports_foreign_keys')
def test_add_foreign_key_long_names(self):
"""
Regression test for #23009.
Only affects databases that supports foreign keys.
"""
# Create the initial tables
with connection.schema_editor() as editor:
editor.create_model(AuthorWithEvenLongerName)
editor.create_model(BookWithLongName)
# Add a second FK, this would fail due to long ref name before the fix
new_field = ForeignKey(AuthorWithEvenLongerName, CASCADE, related_name="something")
new_field.set_attributes_from_name("author_other_really_long_named_i_mean_so_long_fk")
with connection.schema_editor() as editor:
editor.add_field(BookWithLongName, new_field)
@isolate_apps('schema')
@skipUnlessDBFeature('supports_foreign_keys')
def test_add_foreign_key_quoted_db_table(self):
class Author(Model):
class Meta:
db_table = '"table_author_double_quoted"'
app_label = 'schema'
class Book(Model):
author = ForeignKey(Author, CASCADE)
class Meta:
app_label = 'schema'
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
if connection.vendor == 'mysql':
self.assertForeignKeyExists(Book, 'author_id', '"table_author_double_quoted"')
else:
self.assertForeignKeyExists(Book, 'author_id', 'table_author_double_quoted')
def test_add_foreign_object(self):
with connection.schema_editor() as editor:
editor.create_model(BookForeignObj)
new_field = ForeignObject(Author, on_delete=CASCADE, from_fields=['author_id'], to_fields=['id'])
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.add_field(BookForeignObj, new_field)
def test_creation_deletion_reserved_names(self):
"""
Tries creating a model's table, and then deleting it when it has a
SQL reserved name.
"""
# Create the table
with connection.schema_editor() as editor:
try:
editor.create_model(Thing)
except OperationalError as e:
self.fail("Errors when applying initial migration for a model "
"with a table named after an SQL reserved word: %s" % e)
# The table is there
list(Thing.objects.all())
# Clean up that table
with connection.schema_editor() as editor:
editor.delete_model(Thing)
# The table is gone
with self.assertRaises(DatabaseError):
list(Thing.objects.all())
def test_remove_constraints_capital_letters(self):
"""
#23065 - Constraint names must be quoted if they contain capital letters.
"""
def get_field(*args, field_class=IntegerField, **kwargs):
kwargs['db_column'] = "CamelCase"
field = field_class(*args, **kwargs)
field.set_attributes_from_name("CamelCase")
return field
model = Author
field = get_field()
table = model._meta.db_table
column = field.column
identifier_converter = connection.introspection.identifier_converter
with connection.schema_editor() as editor:
editor.create_model(model)
editor.add_field(model, field)
constraint_name = 'CamelCaseIndex'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(
editor.sql_create_index % {
"table": editor.quote_name(table),
"name": editor.quote_name(constraint_name),
"using": "",
"columns": editor.quote_name(column),
"extra": "",
"condition": "",
"include": "",
}
)
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(db_index=True), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
constraint_name = 'CamelCaseUniqConstraint'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(editor._create_unique_sql(model, [field], constraint_name))
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(unique=True), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
if editor.sql_create_fk:
constraint_name = 'CamelCaseFKConstraint'
expected_constraint_name = identifier_converter(constraint_name)
editor.execute(
editor.sql_create_fk % {
"table": editor.quote_name(table),
"name": editor.quote_name(constraint_name),
"column": editor.quote_name(column),
"to_table": editor.quote_name(table),
"to_column": editor.quote_name(model._meta.auto_field.column),
"deferrable": connection.ops.deferrable_sql(),
}
)
self.assertIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
editor.alter_field(model, get_field(Author, CASCADE, field_class=ForeignKey), field, strict=True)
self.assertNotIn(expected_constraint_name, self.get_constraints(model._meta.db_table))
def test_add_field_use_effective_default(self):
"""
#23987 - effective_default() should be used as the field default when
adding a new field.
"""
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no surname field
columns = self.column_classes(Author)
self.assertNotIn("surname", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Add new CharField to ensure default will be used from effective_default
new_field = CharField(max_length=15, blank=True)
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure field was added with the right default
with connection.cursor() as cursor:
cursor.execute("SELECT surname FROM schema_author;")
item = cursor.fetchall()[0]
self.assertEqual(item[0], None if connection.features.interprets_empty_strings_as_nulls else '')
def test_add_field_default_dropped(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Ensure there's no surname field
columns = self.column_classes(Author)
self.assertNotIn("surname", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Add new CharField with a default
new_field = CharField(max_length=15, blank=True, default='surname default')
new_field.set_attributes_from_name("surname")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
# Ensure field was added with the right default
with connection.cursor() as cursor:
cursor.execute("SELECT surname FROM schema_author;")
item = cursor.fetchall()[0]
self.assertEqual(item[0], 'surname default')
# And that the default is no longer set in the database.
field = next(
f for f in connection.introspection.get_table_description(cursor, "schema_author")
if f.name == "surname"
)
if connection.features.can_introspect_default:
self.assertIsNone(field.default)
def test_add_field_default_nullable(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add new nullable CharField with a default.
new_field = CharField(max_length=15, blank=True, null=True, default='surname')
new_field.set_attributes_from_name('surname')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
Author.objects.create(name='Anonymous1')
with connection.cursor() as cursor:
cursor.execute('SELECT surname FROM schema_author;')
item = cursor.fetchall()[0]
self.assertIsNone(item[0])
field = next(
f
for f in connection.introspection.get_table_description(
cursor,
'schema_author',
)
if f.name == 'surname'
)
# Field is still nullable.
self.assertTrue(field.null_ok)
# The database default is no longer set.
if connection.features.can_introspect_default:
self.assertIn(field.default, ['NULL', None])
def test_add_textfield_default_nullable(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
# Add new nullable TextField with a default.
new_field = TextField(blank=True, null=True, default='text')
new_field.set_attributes_from_name('description')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
Author.objects.create(name='Anonymous1')
with connection.cursor() as cursor:
cursor.execute('SELECT description FROM schema_author;')
item = cursor.fetchall()[0]
self.assertIsNone(item[0])
field = next(
f
for f in connection.introspection.get_table_description(
cursor,
'schema_author',
)
if f.name == 'description'
)
# Field is still nullable.
self.assertTrue(field.null_ok)
# The database default is no longer set.
if connection.features.can_introspect_default:
self.assertIn(field.default, ['NULL', None])
def test_alter_field_default_dropped(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Create a row
Author.objects.create(name='Anonymous1')
self.assertIsNone(Author.objects.get().height)
old_field = Author._meta.get_field('height')
# The default from the new field is used in updating existing rows.
new_field = IntegerField(blank=True, default=42)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(Author.objects.get().height, 42)
# The database default should be removed.
with connection.cursor() as cursor:
field = next(
f for f in connection.introspection.get_table_description(cursor, "schema_author")
if f.name == "height"
)
if connection.features.can_introspect_default:
self.assertIsNone(field.default)
def test_alter_field_default_doesnt_perform_queries(self):
"""
No queries are performed if a field default changes and the field's
not changing from null to non-null.
"""
with connection.schema_editor() as editor:
editor.create_model(AuthorWithDefaultHeight)
old_field = AuthorWithDefaultHeight._meta.get_field('height')
new_default = old_field.default * 2
new_field = PositiveIntegerField(null=True, blank=True, default=new_default)
new_field.set_attributes_from_name('height')
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(AuthorWithDefaultHeight, old_field, new_field, strict=True)
@skipUnlessDBFeature('supports_foreign_keys')
def test_alter_field_fk_attributes_noop(self):
"""
No queries are performed when changing field attributes that don't
affect the schema.
"""
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
old_field = Book._meta.get_field('author')
new_field = ForeignKey(
Author,
blank=True,
editable=False,
error_messages={'invalid': 'error message'},
help_text='help text',
limit_choices_to={'limit': 'choice'},
on_delete=PROTECT,
related_name='related_name',
related_query_name='related_query_name',
validators=[lambda x: x],
verbose_name='verbose name',
)
new_field.set_attributes_from_name('author')
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(Book, old_field, new_field, strict=True)
with connection.schema_editor() as editor, self.assertNumQueries(0):
editor.alter_field(Book, new_field, old_field, strict=True)
def test_add_textfield_unhashable_default(self):
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Create a row
Author.objects.create(name='Anonymous1')
# Create a field that has an unhashable default
new_field = TextField(default={})
new_field.set_attributes_from_name("info")
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_add_indexed_charfield(self):
field = CharField(max_length=255, db_index=True)
field.set_attributes_from_name('nom_de_plume')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.add_field(Author, field)
# Should create two indexes; one for like operator.
self.assertEqual(
self.get_constraints_for_column(Author, 'nom_de_plume'),
['schema_author_nom_de_plume_7570a851', 'schema_author_nom_de_plume_7570a851_like'],
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_add_unique_charfield(self):
field = CharField(max_length=255, unique=True)
field.set_attributes_from_name('nom_de_plume')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.add_field(Author, field)
# Should create two indexes; one for like operator.
self.assertEqual(
self.get_constraints_for_column(Author, 'nom_de_plume'),
['schema_author_nom_de_plume_7570a851_like', 'schema_author_nom_de_plume_key']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_index_to_charfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
# Alter to add db_index=True and create 2 indexes.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, db_index=True)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Author, 'name'),
['schema_author_name_1fbc5617', 'schema_author_name_1fbc5617_like']
)
# Remove db_index=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_unique_to_charfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
# Alter to add unique=True and create 2 indexes.
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('name')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Author, 'name'),
['schema_author_name_1fbc5617_like', 'schema_author_name_1fbc5617_uniq']
)
# Remove unique=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'name'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_index_to_textfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Note)
self.assertEqual(self.get_constraints_for_column(Note, 'info'), [])
# Alter to add db_index=True and create 2 indexes.
old_field = Note._meta.get_field('info')
new_field = TextField(db_index=True)
new_field.set_attributes_from_name('info')
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Note, 'info'),
['schema_note_info_4b0ea695', 'schema_note_info_4b0ea695_like']
)
# Remove db_index=True to drop both indexes.
with connection.schema_editor() as editor:
editor.alter_field(Note, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Note, 'info'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_unique_to_charfield_with_db_index(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to add unique=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, db_index=True, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to remove unique=True (should drop unique index)
new_field2 = CharField(max_length=100, db_index=True)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_remove_unique_and_db_index_from_charfield(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to add unique=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, db_index=True, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to remove both unique=True and db_index=True (should drop all indexes)
new_field2 = CharField(max_length=100)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(self.get_constraints_for_column(BookWithoutAuthor, 'title'), [])
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_swap_unique_and_db_index_with_charfield(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(BookWithoutAuthor)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
# Alter to set unique=True and remove db_index=True (should replace the index)
old_field = BookWithoutAuthor._meta.get_field('title')
new_field = CharField(max_length=100, unique=True)
new_field.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff_like', 'schema_book_title_2dfb2dff_uniq']
)
# Alter to set db_index=True and remove unique=True (should restore index)
new_field2 = CharField(max_length=100, db_index=True)
new_field2.set_attributes_from_name('title')
with connection.schema_editor() as editor:
editor.alter_field(BookWithoutAuthor, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(BookWithoutAuthor, 'title'),
['schema_book_title_2dfb2dff', 'schema_book_title_2dfb2dff_like']
)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific")
def test_alter_field_add_db_index_to_charfield_with_unique(self):
# Create the table and verify initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Tag)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
# Alter to add db_index=True
old_field = Tag._meta.get_field('slug')
new_field = SlugField(db_index=True, unique=True)
new_field.set_attributes_from_name('slug')
with connection.schema_editor() as editor:
editor.alter_field(Tag, old_field, new_field, strict=True)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
# Alter to remove db_index=True
new_field2 = SlugField(unique=True)
new_field2.set_attributes_from_name('slug')
with connection.schema_editor() as editor:
editor.alter_field(Tag, new_field, new_field2, strict=True)
self.assertEqual(
self.get_constraints_for_column(Tag, 'slug'),
['schema_tag_slug_2c418ba3_like', 'schema_tag_slug_key']
)
def test_alter_field_add_index_to_integerfield(self):
# Create the table and verify no initial indexes.
with connection.schema_editor() as editor:
editor.create_model(Author)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), [])
# Alter to add db_index=True and create index.
old_field = Author._meta.get_field('weight')
new_field = IntegerField(null=True, db_index=True)
new_field.set_attributes_from_name('weight')
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), ['schema_author_weight_587740f9'])
# Remove db_index=True to drop index.
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertEqual(self.get_constraints_for_column(Author, 'weight'), [])
def test_alter_pk_with_self_referential_field(self):
"""
Changing the primary key field name of a model with a self-referential
foreign key (#26384).
"""
with connection.schema_editor() as editor:
editor.create_model(Node)
old_field = Node._meta.get_field('node_id')
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name('id')
with connection.schema_editor() as editor:
editor.alter_field(Node, old_field, new_field, strict=True)
self.assertForeignKeyExists(Node, 'parent_id', Node._meta.db_table)
@mock.patch('django.db.backends.base.schema.datetime')
@mock.patch('django.db.backends.base.schema.timezone')
def test_add_datefield_and_datetimefield_use_effective_default(self, mocked_datetime, mocked_tz):
"""
effective_default() should be used for DateField, DateTimeField, and
TimeField if auto_now or auto_now_add is set (#25005).
"""
now = datetime.datetime(month=1, day=1, year=2000, hour=1, minute=1)
now_tz = datetime.datetime(month=1, day=1, year=2000, hour=1, minute=1, tzinfo=timezone.utc)
mocked_datetime.now = mock.MagicMock(return_value=now)
mocked_tz.now = mock.MagicMock(return_value=now_tz)
# Create the table
with connection.schema_editor() as editor:
editor.create_model(Author)
# Check auto_now/auto_now_add attributes are not defined
columns = self.column_classes(Author)
self.assertNotIn("dob_auto_now", columns)
self.assertNotIn("dob_auto_now_add", columns)
self.assertNotIn("dtob_auto_now", columns)
self.assertNotIn("dtob_auto_now_add", columns)
self.assertNotIn("tob_auto_now", columns)
self.assertNotIn("tob_auto_now_add", columns)
# Create a row
Author.objects.create(name='Anonymous1')
# Ensure fields were added with the correct defaults
dob_auto_now = DateField(auto_now=True)
dob_auto_now.set_attributes_from_name('dob_auto_now')
self.check_added_field_default(
editor, Author, dob_auto_now, 'dob_auto_now', now.date(),
cast_function=lambda x: x.date(),
)
dob_auto_now_add = DateField(auto_now_add=True)
dob_auto_now_add.set_attributes_from_name('dob_auto_now_add')
self.check_added_field_default(
editor, Author, dob_auto_now_add, 'dob_auto_now_add', now.date(),
cast_function=lambda x: x.date(),
)
dtob_auto_now = DateTimeField(auto_now=True)
dtob_auto_now.set_attributes_from_name('dtob_auto_now')
self.check_added_field_default(
editor, Author, dtob_auto_now, 'dtob_auto_now', now,
)
dt_tm_of_birth_auto_now_add = DateTimeField(auto_now_add=True)
dt_tm_of_birth_auto_now_add.set_attributes_from_name('dtob_auto_now_add')
self.check_added_field_default(
editor, Author, dt_tm_of_birth_auto_now_add, 'dtob_auto_now_add', now,
)
tob_auto_now = TimeField(auto_now=True)
tob_auto_now.set_attributes_from_name('tob_auto_now')
self.check_added_field_default(
editor, Author, tob_auto_now, 'tob_auto_now', now.time(),
cast_function=lambda x: x.time(),
)
tob_auto_now_add = TimeField(auto_now_add=True)
tob_auto_now_add.set_attributes_from_name('tob_auto_now_add')
self.check_added_field_default(
editor, Author, tob_auto_now_add, 'tob_auto_now_add', now.time(),
cast_function=lambda x: x.time(),
)
def test_namespaced_db_table_create_index_name(self):
"""
Table names are stripped of their namespace/schema before being used to
generate index names.
"""
with connection.schema_editor() as editor:
max_name_length = connection.ops.max_name_length() or 200
namespace = 'n' * max_name_length
table_name = 't' * max_name_length
namespaced_table_name = '"%s"."%s"' % (namespace, table_name)
self.assertEqual(
editor._create_index_name(table_name, []),
editor._create_index_name(namespaced_table_name, []),
)
@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle specific db_table syntax')
def test_creation_with_db_table_double_quotes(self):
oracle_user = connection.creation._test_database_user()
class Student(Model):
name = CharField(max_length=30)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = '"%s"."DJANGO_STUDENT_TABLE"' % oracle_user
class Document(Model):
name = CharField(max_length=30)
students = ManyToManyField(Student)
class Meta:
app_label = 'schema'
apps = new_apps
db_table = '"%s"."DJANGO_DOCUMENT_TABLE"' % oracle_user
self.local_models = [Student, Document]
with connection.schema_editor() as editor:
editor.create_model(Student)
editor.create_model(Document)
doc = Document.objects.create(name='Test Name')
student = Student.objects.create(name='Some man')
doc.students.add(student)
@isolate_apps('schema')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific db_table syntax.')
def test_namespaced_db_table_foreign_key_reference(self):
with connection.cursor() as cursor:
cursor.execute('CREATE SCHEMA django_schema_tests')
def delete_schema():
with connection.cursor() as cursor:
cursor.execute('DROP SCHEMA django_schema_tests CASCADE')
self.addCleanup(delete_schema)
class Author(Model):
class Meta:
app_label = 'schema'
class Book(Model):
class Meta:
app_label = 'schema'
db_table = '"django_schema_tests"."schema_book"'
author = ForeignKey(Author, CASCADE)
author.set_attributes_from_name('author')
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.add_field(Book, author)
def test_rename_table_renames_deferred_sql_references(self):
atomic_rename = connection.features.supports_atomic_references_rename
with connection.schema_editor(atomic=atomic_rename) as editor:
editor.create_model(Author)
editor.create_model(Book)
editor.alter_db_table(Author, 'schema_author', 'schema_renamed_author')
editor.alter_db_table(Author, 'schema_book', 'schema_renamed_book')
try:
self.assertGreater(len(editor.deferred_sql), 0)
for statement in editor.deferred_sql:
self.assertIs(statement.references_table('schema_author'), False)
self.assertIs(statement.references_table('schema_book'), False)
finally:
editor.alter_db_table(Author, 'schema_renamed_author', 'schema_author')
editor.alter_db_table(Author, 'schema_renamed_book', 'schema_book')
def test_rename_column_renames_deferred_sql_references(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Book)
old_title = Book._meta.get_field('title')
new_title = CharField(max_length=100, db_index=True)
new_title.set_attributes_from_name('renamed_title')
editor.alter_field(Book, old_title, new_title)
old_author = Book._meta.get_field('author')
new_author = ForeignKey(Author, CASCADE)
new_author.set_attributes_from_name('renamed_author')
editor.alter_field(Book, old_author, new_author)
self.assertGreater(len(editor.deferred_sql), 0)
for statement in editor.deferred_sql:
self.assertIs(statement.references_column('book', 'title'), False)
self.assertIs(statement.references_column('book', 'author_id'), False)
@isolate_apps('schema')
def test_referenced_field_without_constraint_rename_inside_atomic_block(self):
"""
Foreign keys without database level constraint don't prevent the field
they reference from being renamed in an atomic block.
"""
class Foo(Model):
field = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Bar(Model):
foo = ForeignKey(Foo, CASCADE, to_field='field', db_constraint=False)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo, Bar]
with connection.schema_editor() as editor:
editor.create_model(Foo)
editor.create_model(Bar)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=True) as editor:
editor.alter_field(Foo, Foo._meta.get_field('field'), new_field)
@isolate_apps('schema')
def test_referenced_table_without_constraint_rename_inside_atomic_block(self):
"""
Foreign keys without database level constraint don't prevent the table
they reference from being renamed in an atomic block.
"""
class Foo(Model):
field = CharField(max_length=255, unique=True)
class Meta:
app_label = 'schema'
class Bar(Model):
foo = ForeignKey(Foo, CASCADE, to_field='field', db_constraint=False)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo, Bar]
with connection.schema_editor() as editor:
editor.create_model(Foo)
editor.create_model(Bar)
new_field = CharField(max_length=255, unique=True)
new_field.set_attributes_from_name('renamed')
with connection.schema_editor(atomic=True) as editor:
editor.alter_db_table(Foo, Foo._meta.db_table, 'renamed_table')
Foo._meta.db_table = 'renamed_table'
@isolate_apps('schema')
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_db_collation_charfield(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
class Foo(Model):
field = CharField(max_length=255, db_collation=collation)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo]
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.assertEqual(
self.get_column_collation(Foo._meta.db_table, 'field'),
collation,
)
@isolate_apps('schema')
@skipUnlessDBFeature('supports_collation_on_textfield')
def test_db_collation_textfield(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
class Foo(Model):
field = TextField(db_collation=collation)
class Meta:
app_label = 'schema'
self.isolated_local_models = [Foo]
with connection.schema_editor() as editor:
editor.create_model(Foo)
self.assertEqual(
self.get_column_collation(Foo._meta.db_table, 'field'),
collation,
)
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_add_field_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Author)
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('alias')
with connection.schema_editor() as editor:
editor.add_field(Author, new_field)
columns = self.column_classes(Author)
self.assertEqual(
columns['alias'][0],
connection.features.introspected_field_types['CharField'],
)
self.assertEqual(columns['alias'][1][8], collation)
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_alter_field_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Author)
old_field = Author._meta.get_field('name')
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('name')
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
self.assertEqual(
self.get_column_collation(Author._meta.db_table, 'name'),
collation,
)
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, old_field, strict=True)
self.assertIsNone(self.get_column_collation(Author._meta.db_table, 'name'))
@skipUnlessDBFeature('supports_collation_on_charfield')
def test_alter_field_type_and_db_collation(self):
collation = connection.features.test_collations.get('non_default')
if not collation:
self.skipTest('Language collations are not supported.')
with connection.schema_editor() as editor:
editor.create_model(Note)
old_field = Note._meta.get_field('info')
new_field = CharField(max_length=255, db_collation=collation)
new_field.set_attributes_from_name('info')
new_field.model = Note
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(
columns['info'][0],
connection.features.introspected_field_types['CharField'],
)
self.assertEqual(columns['info'][1][8], collation)
with connection.schema_editor() as editor:
editor.alter_field(Note, new_field, old_field, strict=True)
columns = self.column_classes(Note)
self.assertEqual(columns['info'][0], 'TextField')
self.assertIsNone(columns['info'][1][8])
@skipUnlessDBFeature(
'supports_collation_on_charfield',
'supports_non_deterministic_collations',
)
def test_ci_cs_db_collation(self):
cs_collation = connection.features.test_collations.get('cs')
ci_collation = connection.features.test_collations.get('ci')
try:
if connection.vendor == 'mysql':
cs_collation = 'latin1_general_cs'
elif connection.vendor == 'postgresql':
cs_collation = 'en-x-icu'
with connection.cursor() as cursor:
cursor.execute(
"CREATE COLLATION IF NOT EXISTS case_insensitive "
"(provider = icu, locale = 'und-u-ks-level2', "
"deterministic = false)"
)
ci_collation = 'case_insensitive'
# Create the table.
with connection.schema_editor() as editor:
editor.create_model(Author)
# Case-insensitive collation.
old_field = Author._meta.get_field('name')
new_field_ci = CharField(max_length=255, db_collation=ci_collation)
new_field_ci.set_attributes_from_name('name')
new_field_ci.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field_ci, strict=True)
Author.objects.create(name='ANDREW')
self.assertIs(Author.objects.filter(name='Andrew').exists(), True)
# Case-sensitive collation.
new_field_cs = CharField(max_length=255, db_collation=cs_collation)
new_field_cs.set_attributes_from_name('name')
new_field_cs.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field_ci, new_field_cs, strict=True)
self.assertIs(Author.objects.filter(name='Andrew').exists(), False)
finally:
if connection.vendor == 'postgresql':
with connection.cursor() as cursor:
cursor.execute('DROP COLLATION IF EXISTS case_insensitive')
|
0b3e3fda92b6f4c75ded43ce7b5d95910bb5f6ad01eea3d1099aaf73a7631aca | from functools import update_wrapper, wraps
from unittest import TestCase, mock
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.auth.decorators import (
login_required, permission_required, user_passes_test,
)
from django.http import HttpRequest, HttpResponse, HttpResponseNotAllowed
from django.middleware.clickjacking import XFrameOptionsMiddleware
from django.test import SimpleTestCase
from django.utils.decorators import method_decorator
from django.utils.functional import keep_lazy, keep_lazy_text, lazy
from django.utils.safestring import mark_safe
from django.views.decorators.cache import (
cache_control, cache_page, never_cache,
)
from django.views.decorators.clickjacking import (
xframe_options_deny, xframe_options_exempt, xframe_options_sameorigin,
)
from django.views.decorators.http import (
condition, require_GET, require_http_methods, require_POST, require_safe,
)
from django.views.decorators.vary import vary_on_cookie, vary_on_headers
def fully_decorated(request):
"""Expected __doc__"""
return HttpResponse('<html><body>dummy</body></html>')
fully_decorated.anything = "Expected __dict__"
def compose(*functions):
# compose(f, g)(*args, **kwargs) == f(g(*args, **kwargs))
functions = list(reversed(functions))
def _inner(*args, **kwargs):
result = functions[0](*args, **kwargs)
for f in functions[1:]:
result = f(result)
return result
return _inner
full_decorator = compose(
# django.views.decorators.http
require_http_methods(["GET"]),
require_GET,
require_POST,
require_safe,
condition(lambda r: None, lambda r: None),
# django.views.decorators.vary
vary_on_headers('Accept-language'),
vary_on_cookie,
# django.views.decorators.cache
cache_page(60 * 15),
cache_control(private=True),
never_cache,
# django.contrib.auth.decorators
# Apply user_passes_test twice to check #9474
user_passes_test(lambda u: True),
login_required,
permission_required('change_world'),
# django.contrib.admin.views.decorators
staff_member_required,
# django.utils.functional
keep_lazy(HttpResponse),
keep_lazy_text,
lazy,
# django.utils.safestring
mark_safe,
)
fully_decorated = full_decorator(fully_decorated)
class DecoratorsTest(TestCase):
def test_attributes(self):
"""
Built-in decorators set certain attributes of the wrapped function.
"""
self.assertEqual(fully_decorated.__name__, 'fully_decorated')
self.assertEqual(fully_decorated.__doc__, 'Expected __doc__')
self.assertEqual(fully_decorated.__dict__['anything'], 'Expected __dict__')
def test_user_passes_test_composition(self):
"""
The user_passes_test decorator can be applied multiple times (#9474).
"""
def test1(user):
user.decorators_applied.append('test1')
return True
def test2(user):
user.decorators_applied.append('test2')
return True
def callback(request):
return request.user.decorators_applied
callback = user_passes_test(test1)(callback)
callback = user_passes_test(test2)(callback)
class DummyUser:
pass
class DummyRequest:
pass
request = DummyRequest()
request.user = DummyUser()
request.user.decorators_applied = []
response = callback(request)
self.assertEqual(response, ['test2', 'test1'])
def test_cache_page(self):
def my_view(request):
return "response"
my_view_cached = cache_page(123)(my_view)
self.assertEqual(my_view_cached(HttpRequest()), "response")
my_view_cached2 = cache_page(123, key_prefix="test")(my_view)
self.assertEqual(my_view_cached2(HttpRequest()), "response")
def test_require_safe_accepts_only_safe_methods(self):
"""
Test for the require_safe decorator.
A view returns either a response or an exception.
Refs #15637.
"""
def my_view(request):
return HttpResponse("OK")
my_safe_view = require_safe(my_view)
request = HttpRequest()
request.method = 'GET'
self.assertIsInstance(my_safe_view(request), HttpResponse)
request.method = 'HEAD'
self.assertIsInstance(my_safe_view(request), HttpResponse)
request.method = 'POST'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
request.method = 'PUT'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
request.method = 'DELETE'
self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
# For testing method_decorator, a decorator that assumes a single argument.
# We will get type arguments if there is a mismatch in the number of arguments.
def simple_dec(func):
def wrapper(arg):
return func("test:" + arg)
return wraps(func)(wrapper)
simple_dec_m = method_decorator(simple_dec)
# For testing method_decorator, two decorators that add an attribute to the function
def myattr_dec(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs)
wrapper.myattr = True
return wrapper
myattr_dec_m = method_decorator(myattr_dec)
def myattr2_dec(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs)
wrapper.myattr2 = True
return wrapper
myattr2_dec_m = method_decorator(myattr2_dec)
class ClsDec:
def __init__(self, myattr):
self.myattr = myattr
def __call__(self, f):
def wrapped():
return f() and self.myattr
return update_wrapper(wrapped, f)
class MethodDecoratorTests(SimpleTestCase):
"""
Tests for method_decorator
"""
def test_preserve_signature(self):
class Test:
@simple_dec_m
def say(self, arg):
return arg
self.assertEqual("test:hello", Test().say("hello"))
def test_preserve_attributes(self):
# Sanity check myattr_dec and myattr2_dec
@myattr_dec
def func():
pass
self.assertIs(getattr(func, 'myattr', False), True)
@myattr2_dec
def func():
pass
self.assertIs(getattr(func, 'myattr2', False), True)
@myattr_dec
@myattr2_dec
def func():
pass
self.assertIs(getattr(func, 'myattr', False), True)
self.assertIs(getattr(func, 'myattr2', False), False)
# Decorate using method_decorator() on the method.
class TestPlain:
@myattr_dec_m
@myattr2_dec_m
def method(self):
"A method"
pass
# Decorate using method_decorator() on both the class and the method.
# The decorators applied to the methods are applied before the ones
# applied to the class.
@method_decorator(myattr_dec_m, "method")
class TestMethodAndClass:
@method_decorator(myattr2_dec_m)
def method(self):
"A method"
pass
# Decorate using an iterable of function decorators.
@method_decorator((myattr_dec, myattr2_dec), 'method')
class TestFunctionIterable:
def method(self):
"A method"
pass
# Decorate using an iterable of method decorators.
decorators = (myattr_dec_m, myattr2_dec_m)
@method_decorator(decorators, "method")
class TestMethodIterable:
def method(self):
"A method"
pass
tests = (TestPlain, TestMethodAndClass, TestFunctionIterable, TestMethodIterable)
for Test in tests:
with self.subTest(Test=Test):
self.assertIs(getattr(Test().method, 'myattr', False), True)
self.assertIs(getattr(Test().method, 'myattr2', False), True)
self.assertIs(getattr(Test.method, 'myattr', False), True)
self.assertIs(getattr(Test.method, 'myattr2', False), True)
self.assertEqual(Test.method.__doc__, 'A method')
self.assertEqual(Test.method.__name__, 'method')
def test_new_attribute(self):
"""A decorator that sets a new attribute on the method."""
def decorate(func):
func.x = 1
return func
class MyClass:
@method_decorator(decorate)
def method(self):
return True
obj = MyClass()
self.assertEqual(obj.method.x, 1)
self.assertIs(obj.method(), True)
def test_bad_iterable(self):
decorators = {myattr_dec_m, myattr2_dec_m}
msg = "'set' object is not subscriptable"
with self.assertRaisesMessage(TypeError, msg):
@method_decorator(decorators, "method")
class TestIterable:
def method(self):
"A method"
pass
# Test for argumented decorator
def test_argumented(self):
class Test:
@method_decorator(ClsDec(False))
def method(self):
return True
self.assertIs(Test().method(), False)
def test_descriptors(self):
def original_dec(wrapped):
def _wrapped(arg):
return wrapped(arg)
return _wrapped
method_dec = method_decorator(original_dec)
class bound_wrapper:
def __init__(self, wrapped):
self.wrapped = wrapped
self.__name__ = wrapped.__name__
def __call__(self, arg):
return self.wrapped(arg)
def __get__(self, instance, cls=None):
return self
class descriptor_wrapper:
def __init__(self, wrapped):
self.wrapped = wrapped
self.__name__ = wrapped.__name__
def __get__(self, instance, cls=None):
return bound_wrapper(self.wrapped.__get__(instance, cls))
class Test:
@method_dec
@descriptor_wrapper
def method(self, arg):
return arg
self.assertEqual(Test().method(1), 1)
def test_class_decoration(self):
"""
@method_decorator can be used to decorate a class and its methods.
"""
def deco(func):
def _wrapper(*args, **kwargs):
return True
return _wrapper
@method_decorator(deco, name="method")
class Test:
def method(self):
return False
self.assertTrue(Test().method())
def test_tuple_of_decorators(self):
"""
@method_decorator can accept a tuple of decorators.
"""
def add_question_mark(func):
def _wrapper(*args, **kwargs):
return func(*args, **kwargs) + "?"
return _wrapper
def add_exclamation_mark(func):
def _wrapper(*args, **kwargs):
return func(*args, **kwargs) + "!"
return _wrapper
# The order should be consistent with the usual order in which
# decorators are applied, e.g.
# @add_exclamation_mark
# @add_question_mark
# def func():
# ...
decorators = (add_exclamation_mark, add_question_mark)
@method_decorator(decorators, name="method")
class TestFirst:
def method(self):
return "hello world"
class TestSecond:
@method_decorator(decorators)
def method(self):
return "hello world"
self.assertEqual(TestFirst().method(), "hello world?!")
self.assertEqual(TestSecond().method(), "hello world?!")
def test_invalid_non_callable_attribute_decoration(self):
"""
@method_decorator on a non-callable attribute raises an error.
"""
msg = (
"Cannot decorate 'prop' as it isn't a callable attribute of "
"<class 'Test'> (1)"
)
with self.assertRaisesMessage(TypeError, msg):
@method_decorator(lambda: None, name="prop")
class Test:
prop = 1
@classmethod
def __module__(cls):
return "tests"
def test_invalid_method_name_to_decorate(self):
"""
@method_decorator on a nonexistent method raises an error.
"""
msg = (
"The keyword argument `name` must be the name of a method of the "
"decorated class: <class 'Test'>. Got 'nonexistent_method' instead"
)
with self.assertRaisesMessage(ValueError, msg):
@method_decorator(lambda: None, name='nonexistent_method')
class Test:
@classmethod
def __module__(cls):
return "tests"
def test_wrapper_assignments(self):
"""@method_decorator preserves wrapper assignments."""
func_name = None
func_module = None
def decorator(func):
@wraps(func)
def inner(*args, **kwargs):
nonlocal func_name, func_module
func_name = getattr(func, '__name__', None)
func_module = getattr(func, '__module__', None)
return func(*args, **kwargs)
return inner
class Test:
@method_decorator(decorator)
def method(self):
return 'tests'
Test().method()
self.assertEqual(func_name, 'method')
self.assertIsNotNone(func_module)
class XFrameOptionsDecoratorsTests(TestCase):
"""
Tests for the X-Frame-Options decorators.
"""
def test_deny_decorator(self):
"""
Ensures @xframe_options_deny properly sets the X-Frame-Options header.
"""
@xframe_options_deny
def a_view(request):
return HttpResponse()
r = a_view(HttpRequest())
self.assertEqual(r.headers['X-Frame-Options'], 'DENY')
def test_sameorigin_decorator(self):
"""
Ensures @xframe_options_sameorigin properly sets the X-Frame-Options
header.
"""
@xframe_options_sameorigin
def a_view(request):
return HttpResponse()
r = a_view(HttpRequest())
self.assertEqual(r.headers['X-Frame-Options'], 'SAMEORIGIN')
def test_exempt_decorator(self):
"""
Ensures @xframe_options_exempt properly instructs the
XFrameOptionsMiddleware to NOT set the header.
"""
@xframe_options_exempt
def a_view(request):
return HttpResponse()
req = HttpRequest()
resp = a_view(req)
self.assertIsNone(resp.get('X-Frame-Options', None))
self.assertTrue(resp.xframe_options_exempt)
# Since the real purpose of the exempt decorator is to suppress
# the middleware's functionality, let's make sure it actually works...
r = XFrameOptionsMiddleware(a_view)(req)
self.assertIsNone(r.get('X-Frame-Options', None))
class NeverCacheDecoratorTest(SimpleTestCase):
@mock.patch('time.time')
def test_never_cache_decorator_headers(self, mocked_time):
@never_cache
def a_view(request):
return HttpResponse()
mocked_time.return_value = 1167616461.0
response = a_view(HttpRequest())
self.assertEqual(
response.headers['Expires'],
'Mon, 01 Jan 2007 01:54:21 GMT',
)
self.assertEqual(
response.headers['Cache-Control'],
'max-age=0, no-cache, no-store, must-revalidate, private',
)
def test_never_cache_decorator_expires_not_overridden(self):
@never_cache
def a_view(request):
return HttpResponse(headers={'Expires': 'tomorrow'})
response = a_view(HttpRequest())
self.assertEqual(response.headers['Expires'], 'tomorrow')
def test_never_cache_decorator_http_request(self):
class MyClass:
@never_cache
def a_view(self, request):
return HttpResponse()
msg = (
"never_cache didn't receive an HttpRequest. If you are decorating "
"a classmethod, be sure to use @method_decorator."
)
with self.assertRaisesMessage(TypeError, msg):
MyClass().a_view(HttpRequest())
class CacheControlDecoratorTest(SimpleTestCase):
def test_cache_control_decorator_http_request(self):
class MyClass:
@cache_control(a='b')
def a_view(self, request):
return HttpResponse()
msg = (
"cache_control didn't receive an HttpRequest. If you are "
"decorating a classmethod, be sure to use @method_decorator."
)
with self.assertRaisesMessage(TypeError, msg):
MyClass().a_view(HttpRequest())
|
1135652694505a2fb155089ef87edc785d24d14bee1d5725da22944a55ef4f46 | import datetime
import os
from decimal import Decimal
from unittest import mock, skipUnless
from django import forms
from django.core.exceptions import (
NON_FIELD_ERRORS, FieldError, ImproperlyConfigured, ValidationError,
)
from django.core.files.uploadedfile import SimpleUploadedFile
from django.db import connection, models
from django.db.models.query import EmptyQuerySet
from django.forms.models import (
ModelFormMetaclass, construct_instance, fields_for_model, model_to_dict,
modelform_factory,
)
from django.template import Context, Template
from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
from django.test.utils import isolate_apps
from .models import (
Article, ArticleStatus, Author, Author1, Award, BetterWriter, BigInt, Book,
Category, Character, Colour, ColourfulItem, CustomErrorMessage, CustomFF,
CustomFieldForExclusionModel, DateTimePost, DerivedBook, DerivedPost, Dice,
Document, ExplicitPK, FilePathModel, FlexibleDatePost, Homepage,
ImprovedArticle, ImprovedArticleWithParentLink, Inventory,
NullableUniqueCharFieldModel, Number, Person, Photo, Post, Price, Product,
Publication, PublicationDefaults, StrictAssignmentAll,
StrictAssignmentFieldSpecific, Student, StumpJoke, TextFile, Triple,
Writer, WriterProfile, test_images,
)
if test_images:
from .models import ImageFile, NoExtensionImageFile, OptionalImageFile
class ImageFileForm(forms.ModelForm):
class Meta:
model = ImageFile
fields = '__all__'
class OptionalImageFileForm(forms.ModelForm):
class Meta:
model = OptionalImageFile
fields = '__all__'
class NoExtensionImageFileForm(forms.ModelForm):
class Meta:
model = NoExtensionImageFile
fields = '__all__'
class ProductForm(forms.ModelForm):
class Meta:
model = Product
fields = '__all__'
class PriceForm(forms.ModelForm):
class Meta:
model = Price
fields = '__all__'
class BookForm(forms.ModelForm):
class Meta:
model = Book
fields = '__all__'
class DerivedBookForm(forms.ModelForm):
class Meta:
model = DerivedBook
fields = '__all__'
class ExplicitPKForm(forms.ModelForm):
class Meta:
model = ExplicitPK
fields = ('key', 'desc',)
class PostForm(forms.ModelForm):
class Meta:
model = Post
fields = '__all__'
class DerivedPostForm(forms.ModelForm):
class Meta:
model = DerivedPost
fields = '__all__'
class CustomWriterForm(forms.ModelForm):
name = forms.CharField(required=False)
class Meta:
model = Writer
fields = '__all__'
class BaseCategoryForm(forms.ModelForm):
class Meta:
model = Category
fields = '__all__'
class ArticleForm(forms.ModelForm):
class Meta:
model = Article
fields = '__all__'
class RoykoForm(forms.ModelForm):
class Meta:
model = Writer
fields = '__all__'
class ArticleStatusForm(forms.ModelForm):
class Meta:
model = ArticleStatus
fields = '__all__'
class InventoryForm(forms.ModelForm):
class Meta:
model = Inventory
fields = '__all__'
class SelectInventoryForm(forms.Form):
items = forms.ModelMultipleChoiceField(Inventory.objects.all(), to_field_name='barcode')
class CustomFieldForExclusionForm(forms.ModelForm):
class Meta:
model = CustomFieldForExclusionModel
fields = ['name', 'markup']
class TextFileForm(forms.ModelForm):
class Meta:
model = TextFile
fields = '__all__'
class BigIntForm(forms.ModelForm):
class Meta:
model = BigInt
fields = '__all__'
class ModelFormWithMedia(forms.ModelForm):
class Media:
js = ('/some/form/javascript',)
css = {
'all': ('/some/form/css',)
}
class Meta:
model = TextFile
fields = '__all__'
class CustomErrorMessageForm(forms.ModelForm):
name1 = forms.CharField(error_messages={'invalid': 'Form custom error message.'})
class Meta:
fields = '__all__'
model = CustomErrorMessage
class ModelFormBaseTest(TestCase):
def test_base_form(self):
self.assertEqual(list(BaseCategoryForm.base_fields), ['name', 'slug', 'url'])
def test_no_model_class(self):
class NoModelModelForm(forms.ModelForm):
pass
with self.assertRaisesMessage(ValueError, 'ModelForm has no model class specified.'):
NoModelModelForm()
def test_empty_fields_to_fields_for_model(self):
"""
An argument of fields=() to fields_for_model should return an empty dictionary
"""
field_dict = fields_for_model(Person, fields=())
self.assertEqual(len(field_dict), 0)
def test_empty_fields_on_modelform(self):
"""
No fields on a ModelForm should actually result in no fields.
"""
class EmptyPersonForm(forms.ModelForm):
class Meta:
model = Person
fields = ()
form = EmptyPersonForm()
self.assertEqual(len(form.fields), 0)
def test_empty_fields_to_construct_instance(self):
"""
No fields should be set on a model instance if construct_instance receives fields=().
"""
form = modelform_factory(Person, fields="__all__")({'name': 'John Doe'})
self.assertTrue(form.is_valid())
instance = construct_instance(form, Person(), fields=())
self.assertEqual(instance.name, '')
def test_blank_with_null_foreign_key_field(self):
"""
#13776 -- ModelForm's with models having a FK set to null=False and
required=False should be valid.
"""
class FormForTestingIsValid(forms.ModelForm):
class Meta:
model = Student
fields = '__all__'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['character'].required = False
char = Character.objects.create(username='user', last_action=datetime.datetime.today())
data = {'study': 'Engineering'}
data2 = {'study': 'Engineering', 'character': char.pk}
# form is valid because required=False for field 'character'
f1 = FormForTestingIsValid(data)
self.assertTrue(f1.is_valid())
f2 = FormForTestingIsValid(data2)
self.assertTrue(f2.is_valid())
obj = f2.save()
self.assertEqual(obj.character, char)
def test_blank_false_with_null_true_foreign_key_field(self):
"""
A ModelForm with a model having ForeignKey(blank=False, null=True)
and the form field set to required=False should allow the field to be
unset.
"""
class AwardForm(forms.ModelForm):
class Meta:
model = Award
fields = '__all__'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['character'].required = False
character = Character.objects.create(username='user', last_action=datetime.datetime.today())
award = Award.objects.create(name='Best sprinter', character=character)
data = {'name': 'Best tester', 'character': ''} # remove character
form = AwardForm(data=data, instance=award)
self.assertTrue(form.is_valid())
award = form.save()
self.assertIsNone(award.character)
def test_blank_foreign_key_with_radio(self):
class BookForm(forms.ModelForm):
class Meta:
model = Book
fields = ['author']
widgets = {'author': forms.RadioSelect()}
writer = Writer.objects.create(name='Joe Doe')
form = BookForm()
self.assertEqual(list(form.fields['author'].choices), [
('', '---------'),
(writer.pk, 'Joe Doe'),
])
def test_non_blank_foreign_key_with_radio(self):
class AwardForm(forms.ModelForm):
class Meta:
model = Award
fields = ['character']
widgets = {'character': forms.RadioSelect()}
character = Character.objects.create(
username='user',
last_action=datetime.datetime.today(),
)
form = AwardForm()
self.assertEqual(
list(form.fields['character'].choices),
[(character.pk, 'user')],
)
def test_save_blank_false_with_required_false(self):
"""
A ModelForm with a model with a field set to blank=False and the form
field set to required=False should allow the field to be unset.
"""
obj = Writer.objects.create(name='test')
form = CustomWriterForm(data={'name': ''}, instance=obj)
self.assertTrue(form.is_valid())
obj = form.save()
self.assertEqual(obj.name, '')
def test_save_blank_null_unique_charfield_saves_null(self):
form_class = modelform_factory(model=NullableUniqueCharFieldModel, fields='__all__')
empty_value = '' if connection.features.interprets_empty_strings_as_nulls else None
data = {
'codename': '',
'email': '',
'slug': '',
'url': '',
}
form = form_class(data=data)
self.assertTrue(form.is_valid())
form.save()
self.assertEqual(form.instance.codename, empty_value)
self.assertEqual(form.instance.email, empty_value)
self.assertEqual(form.instance.slug, empty_value)
self.assertEqual(form.instance.url, empty_value)
# Save a second form to verify there isn't a unique constraint violation.
form = form_class(data=data)
self.assertTrue(form.is_valid())
form.save()
self.assertEqual(form.instance.codename, empty_value)
self.assertEqual(form.instance.email, empty_value)
self.assertEqual(form.instance.slug, empty_value)
self.assertEqual(form.instance.url, empty_value)
def test_missing_fields_attribute(self):
message = (
"Creating a ModelForm without either the 'fields' attribute "
"or the 'exclude' attribute is prohibited; form "
"MissingFieldsForm needs updating."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
class MissingFieldsForm(forms.ModelForm):
class Meta:
model = Category
def test_extra_fields(self):
class ExtraFields(BaseCategoryForm):
some_extra_field = forms.BooleanField()
self.assertEqual(list(ExtraFields.base_fields),
['name', 'slug', 'url', 'some_extra_field'])
def test_extra_field_model_form(self):
with self.assertRaisesMessage(FieldError, 'no-field'):
class ExtraPersonForm(forms.ModelForm):
""" ModelForm with an extra field """
age = forms.IntegerField()
class Meta:
model = Person
fields = ('name', 'no-field')
def test_extra_declared_field_model_form(self):
class ExtraPersonForm(forms.ModelForm):
""" ModelForm with an extra field """
age = forms.IntegerField()
class Meta:
model = Person
fields = ('name', 'age')
def test_extra_field_modelform_factory(self):
with self.assertRaisesMessage(FieldError, 'Unknown field(s) (no-field) specified for Person'):
modelform_factory(Person, fields=['no-field', 'name'])
def test_replace_field(self):
class ReplaceField(forms.ModelForm):
url = forms.BooleanField()
class Meta:
model = Category
fields = '__all__'
self.assertIsInstance(ReplaceField.base_fields['url'], forms.fields.BooleanField)
def test_replace_field_variant_2(self):
# Should have the same result as before,
# but 'fields' attribute specified differently
class ReplaceField(forms.ModelForm):
url = forms.BooleanField()
class Meta:
model = Category
fields = ['url']
self.assertIsInstance(ReplaceField.base_fields['url'], forms.fields.BooleanField)
def test_replace_field_variant_3(self):
# Should have the same result as before,
# but 'fields' attribute specified differently
class ReplaceField(forms.ModelForm):
url = forms.BooleanField()
class Meta:
model = Category
fields = [] # url will still appear, since it is explicit above
self.assertIsInstance(ReplaceField.base_fields['url'], forms.fields.BooleanField)
def test_override_field(self):
class WriterForm(forms.ModelForm):
book = forms.CharField(required=False)
class Meta:
model = Writer
fields = '__all__'
wf = WriterForm({'name': 'Richard Lockridge'})
self.assertTrue(wf.is_valid())
def test_limit_nonexistent_field(self):
expected_msg = 'Unknown field(s) (nonexistent) specified for Category'
with self.assertRaisesMessage(FieldError, expected_msg):
class InvalidCategoryForm(forms.ModelForm):
class Meta:
model = Category
fields = ['nonexistent']
def test_limit_fields_with_string(self):
expected_msg = "CategoryForm.Meta.fields cannot be a string. Did you mean to type: ('url',)?"
with self.assertRaisesMessage(TypeError, expected_msg):
class CategoryForm(forms.ModelForm):
class Meta:
model = Category
fields = ('url') # note the missing comma
def test_exclude_fields(self):
class ExcludeFields(forms.ModelForm):
class Meta:
model = Category
exclude = ['url']
self.assertEqual(list(ExcludeFields.base_fields), ['name', 'slug'])
def test_exclude_nonexistent_field(self):
class ExcludeFields(forms.ModelForm):
class Meta:
model = Category
exclude = ['nonexistent']
self.assertEqual(list(ExcludeFields.base_fields), ['name', 'slug', 'url'])
def test_exclude_fields_with_string(self):
expected_msg = "CategoryForm.Meta.exclude cannot be a string. Did you mean to type: ('url',)?"
with self.assertRaisesMessage(TypeError, expected_msg):
class CategoryForm(forms.ModelForm):
class Meta:
model = Category
exclude = ('url') # note the missing comma
def test_exclude_and_validation(self):
# This Price instance generated by this form is not valid because the quantity
# field is required, but the form is valid because the field is excluded from
# the form. This is for backwards compatibility.
class PriceFormWithoutQuantity(forms.ModelForm):
class Meta:
model = Price
exclude = ('quantity',)
form = PriceFormWithoutQuantity({'price': '6.00'})
self.assertTrue(form.is_valid())
price = form.save(commit=False)
msg = "{'quantity': ['This field cannot be null.']}"
with self.assertRaisesMessage(ValidationError, msg):
price.full_clean()
# The form should not validate fields that it doesn't contain even if they are
# specified using 'fields', not 'exclude'.
class PriceFormWithoutQuantity(forms.ModelForm):
class Meta:
model = Price
fields = ('price',)
form = PriceFormWithoutQuantity({'price': '6.00'})
self.assertTrue(form.is_valid())
# The form should still have an instance of a model that is not complete and
# not saved into a DB yet.
self.assertEqual(form.instance.price, Decimal('6.00'))
self.assertIsNone(form.instance.quantity)
self.assertIsNone(form.instance.pk)
def test_confused_form(self):
class ConfusedForm(forms.ModelForm):
""" Using 'fields' *and* 'exclude'. Not sure why you'd want to do
this, but uh, "be liberal in what you accept" and all.
"""
class Meta:
model = Category
fields = ['name', 'url']
exclude = ['url']
self.assertEqual(list(ConfusedForm.base_fields),
['name'])
def test_mixmodel_form(self):
class MixModelForm(BaseCategoryForm):
""" Don't allow more than one 'model' definition in the
inheritance hierarchy. Technically, it would generate a valid
form, but the fact that the resulting save method won't deal with
multiple objects is likely to trip up people not familiar with the
mechanics.
"""
class Meta:
model = Article
fields = '__all__'
# MixModelForm is now an Article-related thing, because MixModelForm.Meta
# overrides BaseCategoryForm.Meta.
self.assertEqual(
list(MixModelForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_article_form(self):
self.assertEqual(
list(ArticleForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_bad_form(self):
# First class with a Meta class wins...
class BadForm(ArticleForm, BaseCategoryForm):
pass
self.assertEqual(
list(BadForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_invalid_meta_model(self):
class InvalidModelForm(forms.ModelForm):
class Meta:
pass # no model
# Can't create new form
msg = 'ModelForm has no model class specified.'
with self.assertRaisesMessage(ValueError, msg):
InvalidModelForm()
# Even if you provide a model instance
with self.assertRaisesMessage(ValueError, msg):
InvalidModelForm(instance=Category)
def test_subcategory_form(self):
class SubCategoryForm(BaseCategoryForm):
""" Subclassing without specifying a Meta on the class will use
the parent's Meta (or the first parent in the MRO if there are
multiple parent classes).
"""
pass
self.assertEqual(list(SubCategoryForm.base_fields), ['name', 'slug', 'url'])
def test_subclassmeta_form(self):
class SomeCategoryForm(forms.ModelForm):
checkbox = forms.BooleanField()
class Meta:
model = Category
fields = '__all__'
class SubclassMeta(SomeCategoryForm):
""" We can also subclass the Meta inner class to change the fields
list.
"""
class Meta(SomeCategoryForm.Meta):
exclude = ['url']
self.assertHTMLEqual(
str(SubclassMeta()),
"""<tr><th><label for="id_name">Name:</label></th>
<td><input id="id_name" type="text" name="name" maxlength="20" required></td></tr>
<tr><th><label for="id_slug">Slug:</label></th>
<td><input id="id_slug" type="text" name="slug" maxlength="20" required></td></tr>
<tr><th><label for="id_checkbox">Checkbox:</label></th>
<td><input type="checkbox" name="checkbox" id="id_checkbox" required></td></tr>"""
)
def test_orderfields_form(self):
class OrderFields(forms.ModelForm):
class Meta:
model = Category
fields = ['url', 'name']
self.assertEqual(list(OrderFields.base_fields),
['url', 'name'])
self.assertHTMLEqual(
str(OrderFields()),
"""<tr><th><label for="id_url">The URL:</label></th>
<td><input id="id_url" type="text" name="url" maxlength="40" required></td></tr>
<tr><th><label for="id_name">Name:</label></th>
<td><input id="id_name" type="text" name="name" maxlength="20" required></td></tr>"""
)
def test_orderfields2_form(self):
class OrderFields2(forms.ModelForm):
class Meta:
model = Category
fields = ['slug', 'url', 'name']
exclude = ['url']
self.assertEqual(list(OrderFields2.base_fields), ['slug', 'name'])
def test_default_populated_on_optional_field(self):
class PubForm(forms.ModelForm):
mode = forms.CharField(max_length=255, required=False)
class Meta:
model = PublicationDefaults
fields = ('mode',)
# Empty data uses the model field default.
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.mode, 'di')
self.assertEqual(m1._meta.get_field('mode').get_default(), 'di')
# Blank data doesn't use the model field default.
mf2 = PubForm({'mode': ''})
self.assertEqual(mf2.errors, {})
m2 = mf2.save(commit=False)
self.assertEqual(m2.mode, '')
def test_default_not_populated_on_non_empty_value_in_cleaned_data(self):
class PubForm(forms.ModelForm):
mode = forms.CharField(max_length=255, required=False)
mocked_mode = None
def clean(self):
self.cleaned_data['mode'] = self.mocked_mode
return self.cleaned_data
class Meta:
model = PublicationDefaults
fields = ('mode',)
pub_form = PubForm({})
pub_form.mocked_mode = 'de'
pub = pub_form.save(commit=False)
self.assertEqual(pub.mode, 'de')
# Default should be populated on an empty value in cleaned_data.
default_mode = 'di'
for empty_value in pub_form.fields['mode'].empty_values:
with self.subTest(empty_value=empty_value):
pub_form = PubForm({})
pub_form.mocked_mode = empty_value
pub = pub_form.save(commit=False)
self.assertEqual(pub.mode, default_mode)
def test_default_not_populated_on_optional_checkbox_input(self):
class PubForm(forms.ModelForm):
class Meta:
model = PublicationDefaults
fields = ('active',)
# Empty data doesn't use the model default because CheckboxInput
# doesn't have a value in HTML form submission.
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertIs(m1.active, False)
self.assertIsInstance(mf1.fields['active'].widget, forms.CheckboxInput)
self.assertIs(m1._meta.get_field('active').get_default(), True)
def test_default_not_populated_on_checkboxselectmultiple(self):
class PubForm(forms.ModelForm):
mode = forms.CharField(required=False, widget=forms.CheckboxSelectMultiple)
class Meta:
model = PublicationDefaults
fields = ('mode',)
# Empty data doesn't use the model default because an unchecked
# CheckboxSelectMultiple doesn't have a value in HTML form submission.
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.mode, '')
self.assertEqual(m1._meta.get_field('mode').get_default(), 'di')
def test_default_not_populated_on_selectmultiple(self):
class PubForm(forms.ModelForm):
mode = forms.CharField(required=False, widget=forms.SelectMultiple)
class Meta:
model = PublicationDefaults
fields = ('mode',)
# Empty data doesn't use the model default because an unselected
# SelectMultiple doesn't have a value in HTML form submission.
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.mode, '')
self.assertEqual(m1._meta.get_field('mode').get_default(), 'di')
def test_prefixed_form_with_default_field(self):
class PubForm(forms.ModelForm):
prefix = 'form-prefix'
class Meta:
model = PublicationDefaults
fields = ('mode',)
mode = 'de'
self.assertNotEqual(mode, PublicationDefaults._meta.get_field('mode').get_default())
mf1 = PubForm({'form-prefix-mode': mode})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.mode, mode)
def test_renderer_kwarg(self):
custom = object()
self.assertIs(ProductForm(renderer=custom).renderer, custom)
def test_default_splitdatetime_field(self):
class PubForm(forms.ModelForm):
datetime_published = forms.SplitDateTimeField(required=False)
class Meta:
model = PublicationDefaults
fields = ('datetime_published',)
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.datetime_published, datetime.datetime(2000, 1, 1))
mf2 = PubForm({'datetime_published_0': '2010-01-01', 'datetime_published_1': '0:00:00'})
self.assertEqual(mf2.errors, {})
m2 = mf2.save(commit=False)
self.assertEqual(m2.datetime_published, datetime.datetime(2010, 1, 1))
def test_default_filefield(self):
class PubForm(forms.ModelForm):
class Meta:
model = PublicationDefaults
fields = ('file',)
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.file.name, 'default.txt')
mf2 = PubForm({}, {'file': SimpleUploadedFile('name', b'foo')})
self.assertEqual(mf2.errors, {})
m2 = mf2.save(commit=False)
self.assertEqual(m2.file.name, 'name')
def test_default_selectdatewidget(self):
class PubForm(forms.ModelForm):
date_published = forms.DateField(required=False, widget=forms.SelectDateWidget)
class Meta:
model = PublicationDefaults
fields = ('date_published',)
mf1 = PubForm({})
self.assertEqual(mf1.errors, {})
m1 = mf1.save(commit=False)
self.assertEqual(m1.date_published, datetime.date.today())
mf2 = PubForm({'date_published_year': '2010', 'date_published_month': '1', 'date_published_day': '1'})
self.assertEqual(mf2.errors, {})
m2 = mf2.save(commit=False)
self.assertEqual(m2.date_published, datetime.date(2010, 1, 1))
class FieldOverridesByFormMetaForm(forms.ModelForm):
class Meta:
model = Category
fields = ['name', 'url', 'slug']
widgets = {
'name': forms.Textarea,
'url': forms.TextInput(attrs={'class': 'url'})
}
labels = {
'name': 'Title',
}
help_texts = {
'slug': 'Watch out! Letters, numbers, underscores and hyphens only.',
}
error_messages = {
'slug': {
'invalid': (
"Didn't you read the help text? "
"We said letters, numbers, underscores and hyphens only!"
)
}
}
field_classes = {
'url': forms.URLField,
}
class TestFieldOverridesByFormMeta(SimpleTestCase):
def test_widget_overrides(self):
form = FieldOverridesByFormMetaForm()
self.assertHTMLEqual(
str(form['name']),
'<textarea id="id_name" rows="10" cols="40" name="name" maxlength="20" required></textarea>',
)
self.assertHTMLEqual(
str(form['url']),
'<input id="id_url" type="text" class="url" name="url" maxlength="40" required>',
)
self.assertHTMLEqual(
str(form['slug']),
'<input id="id_slug" type="text" name="slug" maxlength="20" required>',
)
def test_label_overrides(self):
form = FieldOverridesByFormMetaForm()
self.assertHTMLEqual(
str(form['name'].label_tag()),
'<label for="id_name">Title:</label>',
)
self.assertHTMLEqual(
str(form['url'].label_tag()),
'<label for="id_url">The URL:</label>',
)
self.assertHTMLEqual(
str(form['slug'].label_tag()),
'<label for="id_slug">Slug:</label>',
)
self.assertHTMLEqual(
form['name'].legend_tag(),
'<legend for="id_name">Title:</legend>',
)
self.assertHTMLEqual(
form['url'].legend_tag(),
'<legend for="id_url">The URL:</legend>',
)
self.assertHTMLEqual(
form['slug'].legend_tag(),
'<legend for="id_slug">Slug:</legend>',
)
def test_help_text_overrides(self):
form = FieldOverridesByFormMetaForm()
self.assertEqual(
form['slug'].help_text,
'Watch out! Letters, numbers, underscores and hyphens only.',
)
def test_error_messages_overrides(self):
form = FieldOverridesByFormMetaForm(data={
'name': 'Category',
'url': 'http://www.example.com/category/',
'slug': '!%#*@',
})
form.full_clean()
error = [
"Didn't you read the help text? "
"We said letters, numbers, underscores and hyphens only!",
]
self.assertEqual(form.errors, {'slug': error})
def test_field_type_overrides(self):
form = FieldOverridesByFormMetaForm()
self.assertIs(Category._meta.get_field('url').__class__, models.CharField)
self.assertIsInstance(form.fields['url'], forms.URLField)
class IncompleteCategoryFormWithFields(forms.ModelForm):
"""
A form that replaces the model's url field with a custom one. This should
prevent the model field's validation from being called.
"""
url = forms.CharField(required=False)
class Meta:
fields = ('name', 'slug')
model = Category
class IncompleteCategoryFormWithExclude(forms.ModelForm):
"""
A form that replaces the model's url field with a custom one. This should
prevent the model field's validation from being called.
"""
url = forms.CharField(required=False)
class Meta:
exclude = ['url']
model = Category
class ValidationTest(SimpleTestCase):
def test_validates_with_replaced_field_not_specified(self):
form = IncompleteCategoryFormWithFields(data={'name': 'some name', 'slug': 'some-slug'})
self.assertIs(form.is_valid(), True)
def test_validates_with_replaced_field_excluded(self):
form = IncompleteCategoryFormWithExclude(data={'name': 'some name', 'slug': 'some-slug'})
self.assertIs(form.is_valid(), True)
def test_notrequired_overrides_notblank(self):
form = CustomWriterForm({})
self.assertIs(form.is_valid(), True)
class UniqueTest(TestCase):
"""
unique/unique_together validation.
"""
@classmethod
def setUpTestData(cls):
cls.writer = Writer.objects.create(name='Mike Royko')
def test_simple_unique(self):
form = ProductForm({'slug': 'teddy-bear-blue'})
self.assertTrue(form.is_valid())
obj = form.save()
form = ProductForm({'slug': 'teddy-bear-blue'})
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Product with this Slug already exists.'])
form = ProductForm({'slug': 'teddy-bear-blue'}, instance=obj)
self.assertTrue(form.is_valid())
def test_unique_together(self):
"""ModelForm test of unique_together constraint"""
form = PriceForm({'price': '6.00', 'quantity': '1'})
self.assertTrue(form.is_valid())
form.save()
form = PriceForm({'price': '6.00', 'quantity': '1'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Price with this Price and Quantity already exists.'])
def test_unique_together_exclusion(self):
"""
Forms don't validate unique_together constraints when only part of the
constraint is included in the form's fields. This allows using
form.save(commit=False) and then assigning the missing field(s) to the
model instance.
"""
class BookForm(forms.ModelForm):
class Meta:
model = DerivedBook
fields = ('isbn', 'suffix1')
# The unique_together is on suffix1/suffix2 but only suffix1 is part
# of the form. The fields must have defaults, otherwise they'll be
# skipped by other logic.
self.assertEqual(DerivedBook._meta.unique_together, (('suffix1', 'suffix2'),))
for name in ('suffix1', 'suffix2'):
with self.subTest(name=name):
field = DerivedBook._meta.get_field(name)
self.assertEqual(field.default, 0)
# The form fails validation with "Derived book with this Suffix1 and
# Suffix2 already exists." if the unique_together validation isn't
# skipped.
DerivedBook.objects.create(isbn='12345')
form = BookForm({'isbn': '56789', 'suffix1': '0'})
self.assertTrue(form.is_valid(), form.errors)
def test_multiple_field_unique_together(self):
"""
When the same field is involved in multiple unique_together
constraints, we need to make sure we don't remove the data for it
before doing all the validation checking (not just failing after
the first one).
"""
class TripleForm(forms.ModelForm):
class Meta:
model = Triple
fields = '__all__'
Triple.objects.create(left=1, middle=2, right=3)
form = TripleForm({'left': '1', 'middle': '2', 'right': '3'})
self.assertFalse(form.is_valid())
form = TripleForm({'left': '1', 'middle': '3', 'right': '1'})
self.assertTrue(form.is_valid())
@skipUnlessDBFeature('supports_nullable_unique_constraints')
def test_unique_null(self):
title = 'I May Be Wrong But I Doubt It'
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertTrue(form.is_valid())
form.save()
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Book with this Title and Author already exists.'])
form = BookForm({'title': title})
self.assertTrue(form.is_valid())
form.save()
form = BookForm({'title': title})
self.assertTrue(form.is_valid())
def test_inherited_unique(self):
title = 'Boss'
Book.objects.create(title=title, author=self.writer, special_id=1)
form = DerivedBookForm({'title': 'Other', 'author': self.writer.pk, 'special_id': '1', 'isbn': '12345'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['special_id'], ['Book with this Special id already exists.'])
def test_inherited_unique_together(self):
title = 'Boss'
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertTrue(form.is_valid())
form.save()
form = DerivedBookForm({'title': title, 'author': self.writer.pk, 'isbn': '12345'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Book with this Title and Author already exists.'])
def test_abstract_inherited_unique(self):
title = 'Boss'
isbn = '12345'
DerivedBook.objects.create(title=title, author=self.writer, isbn=isbn)
form = DerivedBookForm({
'title': 'Other', 'author': self.writer.pk, 'isbn': isbn,
'suffix1': '1', 'suffix2': '2',
})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['isbn'], ['Derived book with this Isbn already exists.'])
def test_abstract_inherited_unique_together(self):
title = 'Boss'
isbn = '12345'
DerivedBook.objects.create(title=title, author=self.writer, isbn=isbn)
form = DerivedBookForm({
'title': 'Other',
'author': self.writer.pk,
'isbn': '9876',
'suffix1': '0',
'suffix2': '0'
})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(
form.errors['__all__'],
['Derived book with this Suffix1 and Suffix2 already exists.'],
)
def test_explicitpk_unspecified(self):
"""Test for primary_key being in the form and failing validation."""
form = ExplicitPKForm({'key': '', 'desc': ''})
self.assertFalse(form.is_valid())
def test_explicitpk_unique(self):
"""Ensure keys and blank character strings are tested for uniqueness."""
form = ExplicitPKForm({'key': 'key1', 'desc': ''})
self.assertTrue(form.is_valid())
form.save()
form = ExplicitPKForm({'key': 'key1', 'desc': ''})
self.assertFalse(form.is_valid())
if connection.features.interprets_empty_strings_as_nulls:
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
else:
self.assertEqual(len(form.errors), 3)
self.assertEqual(form.errors['__all__'], ['Explicit pk with this Key and Desc already exists.'])
self.assertEqual(form.errors['desc'], ['Explicit pk with this Desc already exists.'])
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
def test_unique_for_date(self):
p = Post.objects.create(
title="Django 1.0 is released", slug="Django 1.0",
subtitle="Finally", posted=datetime.date(2008, 9, 3),
)
form = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['title'], ['Title must be unique for Posted date.'])
form = PostForm({'title': "Work on Django 1.1 begins", 'posted': '2008-09-03'})
self.assertTrue(form.is_valid())
form = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-04'})
self.assertTrue(form.is_valid())
form = PostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Slug must be unique for Posted year.'])
form = PostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
self.assertFalse(form.is_valid())
self.assertEqual(form.errors['subtitle'], ['Subtitle must be unique for Posted month.'])
data = {'subtitle': "Finally", "title": "Django 1.0 is released", "slug": "Django 1.0", 'posted': '2008-09-03'}
form = PostForm(data, instance=p)
self.assertTrue(form.is_valid())
form = PostForm({'title': "Django 1.0 is released"})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['posted'], ['This field is required.'])
def test_unique_for_date_in_exclude(self):
"""
If the date for unique_for_* constraints is excluded from the
ModelForm (in this case 'posted' has editable=False, then the
constraint should be ignored.
"""
class DateTimePostForm(forms.ModelForm):
class Meta:
model = DateTimePost
fields = '__all__'
DateTimePost.objects.create(
title="Django 1.0 is released", slug="Django 1.0",
subtitle="Finally", posted=datetime.datetime(2008, 9, 3, 10, 10, 1),
)
# 'title' has unique_for_date='posted'
form = DateTimePostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertTrue(form.is_valid())
# 'slug' has unique_for_year='posted'
form = DateTimePostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
self.assertTrue(form.is_valid())
# 'subtitle' has unique_for_month='posted'
form = DateTimePostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
self.assertTrue(form.is_valid())
def test_inherited_unique_for_date(self):
p = Post.objects.create(
title="Django 1.0 is released", slug="Django 1.0",
subtitle="Finally", posted=datetime.date(2008, 9, 3),
)
form = DerivedPostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['title'], ['Title must be unique for Posted date.'])
form = DerivedPostForm({'title': "Work on Django 1.1 begins", 'posted': '2008-09-03'})
self.assertTrue(form.is_valid())
form = DerivedPostForm({'title': "Django 1.0 is released", 'posted': '2008-09-04'})
self.assertTrue(form.is_valid())
form = DerivedPostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Slug must be unique for Posted year.'])
form = DerivedPostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
self.assertFalse(form.is_valid())
self.assertEqual(form.errors['subtitle'], ['Subtitle must be unique for Posted month.'])
data = {'subtitle': "Finally", "title": "Django 1.0 is released", "slug": "Django 1.0", 'posted': '2008-09-03'}
form = DerivedPostForm(data, instance=p)
self.assertTrue(form.is_valid())
def test_unique_for_date_with_nullable_date(self):
class FlexDatePostForm(forms.ModelForm):
class Meta:
model = FlexibleDatePost
fields = '__all__'
p = FlexibleDatePost.objects.create(
title="Django 1.0 is released", slug="Django 1.0",
subtitle="Finally", posted=datetime.date(2008, 9, 3),
)
form = FlexDatePostForm({'title': "Django 1.0 is released"})
self.assertTrue(form.is_valid())
form = FlexDatePostForm({'slug': "Django 1.0"})
self.assertTrue(form.is_valid())
form = FlexDatePostForm({'subtitle': "Finally"})
self.assertTrue(form.is_valid())
data = {'subtitle': "Finally", "title": "Django 1.0 is released", "slug": "Django 1.0"}
form = FlexDatePostForm(data, instance=p)
self.assertTrue(form.is_valid())
def test_override_unique_message(self):
class CustomProductForm(ProductForm):
class Meta(ProductForm.Meta):
error_messages = {
'slug': {
'unique': "%(model_name)s's %(field_label)s not unique.",
}
}
Product.objects.create(slug='teddy-bear-blue')
form = CustomProductForm({'slug': 'teddy-bear-blue'})
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ["Product's Slug not unique."])
def test_override_unique_together_message(self):
class CustomPriceForm(PriceForm):
class Meta(PriceForm.Meta):
error_messages = {
NON_FIELD_ERRORS: {
'unique_together': "%(model_name)s's %(field_labels)s not unique.",
}
}
Price.objects.create(price=6.00, quantity=1)
form = CustomPriceForm({'price': '6.00', 'quantity': '1'})
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors[NON_FIELD_ERRORS], ["Price's Price and Quantity not unique."])
def test_override_unique_for_date_message(self):
class CustomPostForm(PostForm):
class Meta(PostForm.Meta):
error_messages = {
'title': {
'unique_for_date': (
"%(model_name)s's %(field_label)s not unique "
"for %(date_field_label)s date."
),
}
}
Post.objects.create(
title="Django 1.0 is released", slug="Django 1.0",
subtitle="Finally", posted=datetime.date(2008, 9, 3),
)
form = CustomPostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['title'], ["Post's Title not unique for Posted date."])
class ModelFormBasicTests(TestCase):
def create_basic_data(self):
self.c1 = Category.objects.create(name='Entertainment', slug='entertainment', url='entertainment')
self.c2 = Category.objects.create(name="It's a test", slug='its-test', url='test')
self.c3 = Category.objects.create(name='Third test', slug='third-test', url='third')
self.w_royko = Writer.objects.create(name='Mike Royko')
self.w_woodward = Writer.objects.create(name='Bob Woodward')
def test_base_form(self):
self.assertEqual(Category.objects.count(), 0)
f = BaseCategoryForm()
self.assertHTMLEqual(
str(f),
"""<tr><th><label for="id_name">Name:</label></th>
<td><input id="id_name" type="text" name="name" maxlength="20" required></td></tr>
<tr><th><label for="id_slug">Slug:</label></th>
<td><input id="id_slug" type="text" name="slug" maxlength="20" required></td></tr>
<tr><th><label for="id_url">The URL:</label></th>
<td><input id="id_url" type="text" name="url" maxlength="40" required></td></tr>"""
)
self.assertHTMLEqual(
str(f.as_ul()),
"""<li><label for="id_name">Name:</label> <input id="id_name" type="text" name="name" maxlength="20" required></li>
<li><label for="id_slug">Slug:</label> <input id="id_slug" type="text" name="slug" maxlength="20" required></li>
<li><label for="id_url">The URL:</label> <input id="id_url" type="text" name="url" maxlength="40" required></li>"""
)
self.assertHTMLEqual(
str(f["name"]),
"""<input id="id_name" type="text" name="name" maxlength="20" required>""")
def test_auto_id(self):
f = BaseCategoryForm(auto_id=False)
self.assertHTMLEqual(
str(f.as_ul()),
"""<li>Name: <input type="text" name="name" maxlength="20" required></li>
<li>Slug: <input type="text" name="slug" maxlength="20" required></li>
<li>The URL: <input type="text" name="url" maxlength="40" required></li>"""
)
def test_initial_values(self):
self.create_basic_data()
# Initial values can be provided for model forms
f = ArticleForm(
auto_id=False,
initial={
'headline': 'Your headline here',
'categories': [str(self.c1.id), str(self.c2.id)]
})
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" value="Your headline here" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" required></li>
<li>Writer: <select name="writer" required>
<option value="" selected>---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article" required></textarea></li>
<li>Categories: <select multiple name="categories">
<option value="%s" selected>Entertainment</option>
<option value="%s" selected>It's a test</option>
<option value="%s">Third test</option>
</select></li>
<li>Status: <select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (self.w_woodward.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk))
# When the ModelForm is passed an instance, that instance's current values are
# inserted as 'initial' data in each Field.
f = RoykoForm(auto_id=False, instance=self.w_royko)
self.assertHTMLEqual(
str(f),
'''<tr><th>Name:</th><td><input type="text" name="name" value="Mike Royko" maxlength="50" required><br>
<span class="helptext">Use both first and last names.</span></td></tr>'''
)
art = Article.objects.create(
headline='Test article',
slug='test-article',
pub_date=datetime.date(1988, 1, 4),
writer=self.w_royko,
article='Hello.'
)
art_id_1 = art.id
f = ArticleForm(auto_id=False, instance=art)
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" value="Test article" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" value="test-article" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" required></li>
<li>Writer: <select name="writer" required>
<option value="">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s" selected>Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article" required>Hello.</textarea></li>
<li>Categories: <select multiple name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select></li>
<li>Status: <select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (self.w_woodward.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk))
f = ArticleForm({
'headline': 'Test headline',
'slug': 'test-headline',
'pub_date': '1984-02-06',
'writer': str(self.w_royko.pk),
'article': 'Hello.'
}, instance=art)
self.assertEqual(f.errors, {})
self.assertTrue(f.is_valid())
test_art = f.save()
self.assertEqual(test_art.id, art_id_1)
test_art = Article.objects.get(id=art_id_1)
self.assertEqual(test_art.headline, 'Test headline')
def test_m2m_initial_callable(self):
"""
Regression for #10349: A callable can be provided as the initial value for an m2m field
"""
self.maxDiff = 1200
self.create_basic_data()
# Set up a callable initial value
def formfield_for_dbfield(db_field, **kwargs):
if db_field.name == 'categories':
kwargs['initial'] = lambda: Category.objects.all().order_by('name')[:2]
return db_field.formfield(**kwargs)
# Create a ModelForm, instantiate it, and check that the output is as expected
ModelForm = modelform_factory(
Article,
fields=['headline', 'categories'],
formfield_callback=formfield_for_dbfield,
)
form = ModelForm()
self.assertHTMLEqual(
form.as_ul(),
"""<li><label for="id_headline">Headline:</label>
<input id="id_headline" type="text" name="headline" maxlength="50" required></li>
<li><label for="id_categories">Categories:</label>
<select multiple name="categories" id="id_categories">
<option value="%d" selected>Entertainment</option>
<option value="%d" selected>It's a test</option>
<option value="%d">Third test</option>
</select></li>"""
% (self.c1.pk, self.c2.pk, self.c3.pk))
def test_basic_creation(self):
self.assertEqual(Category.objects.count(), 0)
f = BaseCategoryForm({
'name': 'Entertainment',
'slug': 'entertainment',
'url': 'entertainment',
})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['name'], 'Entertainment')
self.assertEqual(f.cleaned_data['slug'], 'entertainment')
self.assertEqual(f.cleaned_data['url'], 'entertainment')
c1 = f.save()
# Testing whether the same object is returned from the
# ORM... not the fastest way...
self.assertEqual(Category.objects.count(), 1)
self.assertEqual(c1, Category.objects.all()[0])
self.assertEqual(c1.name, "Entertainment")
def test_save_commit_false(self):
# If you call save() with commit=False, then it will return an object that
# hasn't yet been saved to the database. In this case, it's up to you to call
# save() on the resulting model instance.
f = BaseCategoryForm({'name': 'Third test', 'slug': 'third-test', 'url': 'third'})
self.assertTrue(f.is_valid())
c1 = f.save(commit=False)
self.assertEqual(c1.name, "Third test")
self.assertEqual(Category.objects.count(), 0)
c1.save()
self.assertEqual(Category.objects.count(), 1)
def test_save_with_data_errors(self):
# If you call save() with invalid data, you'll get a ValueError.
f = BaseCategoryForm({'name': '', 'slug': 'not a slug!', 'url': 'foo'})
self.assertEqual(f.errors['name'], ['This field is required.'])
self.assertEqual(
f.errors['slug'],
['Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.']
)
self.assertEqual(f.cleaned_data, {'url': 'foo'})
msg = "The Category could not be created because the data didn't validate."
with self.assertRaisesMessage(ValueError, msg):
f.save()
f = BaseCategoryForm({'name': '', 'slug': '', 'url': 'foo'})
with self.assertRaisesMessage(ValueError, msg):
f.save()
def test_multi_fields(self):
self.create_basic_data()
self.maxDiff = None
# ManyToManyFields are represented by a MultipleChoiceField, ForeignKeys and any
# fields with the 'choices' attribute are represented by a ChoiceField.
f = ArticleForm(auto_id=False)
self.assertHTMLEqual(
str(f),
'''<tr><th>Headline:</th><td><input type="text" name="headline" maxlength="50" required></td></tr>
<tr><th>Slug:</th><td><input type="text" name="slug" maxlength="50" required></td></tr>
<tr><th>Pub date:</th><td><input type="text" name="pub_date" required></td></tr>
<tr><th>Writer:</th><td><select name="writer" required>
<option value="" selected>---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></td></tr>
<tr><th>Article:</th><td><textarea rows="10" cols="40" name="article" required></textarea></td></tr>
<tr><th>Categories:</th><td><select multiple name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select></td></tr>
<tr><th>Status:</th><td><select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></td></tr>''' % (self.w_woodward.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk))
# Add some categories and test the many-to-many form output.
new_art = Article.objects.create(
article="Hello.", headline="New headline", slug="new-headline",
pub_date=datetime.date(1988, 1, 4), writer=self.w_royko)
new_art.categories.add(Category.objects.get(name='Entertainment'))
self.assertSequenceEqual(new_art.categories.all(), [self.c1])
f = ArticleForm(auto_id=False, instance=new_art)
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" value="New headline" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" value="new-headline" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" required></li>
<li>Writer: <select name="writer" required>
<option value="">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s" selected>Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article" required>Hello.</textarea></li>
<li>Categories: <select multiple name="categories">
<option value="%s" selected>Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select></li>
<li>Status: <select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (self.w_woodward.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk))
def test_subset_fields(self):
# You can restrict a form to a subset of the complete list of fields
# by providing a 'fields' argument. If you try to save a
# model created with such a form, you need to ensure that the fields
# that are _not_ on the form have default values, or are allowed to have
# a value of None. If a field isn't specified on a form, the object created
# from the form can't provide a value for that field!
class PartialArticleForm(forms.ModelForm):
class Meta:
model = Article
fields = ('headline', 'pub_date')
f = PartialArticleForm(auto_id=False)
self.assertHTMLEqual(
str(f),
'''<tr><th>Headline:</th><td><input type="text" name="headline" maxlength="50" required></td></tr>
<tr><th>Pub date:</th><td><input type="text" name="pub_date" required></td></tr>''')
class PartialArticleFormWithSlug(forms.ModelForm):
class Meta:
model = Article
fields = ('headline', 'slug', 'pub_date')
w_royko = Writer.objects.create(name='Mike Royko')
art = Article.objects.create(
article="Hello.", headline="New headline", slug="new-headline",
pub_date=datetime.date(1988, 1, 4), writer=w_royko)
f = PartialArticleFormWithSlug({
'headline': 'New headline',
'slug': 'new-headline',
'pub_date': '1988-01-04'
}, auto_id=False, instance=art)
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" value="New headline" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" value="new-headline" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" required></li>'''
)
self.assertTrue(f.is_valid())
new_art = f.save()
self.assertEqual(new_art.id, art.id)
new_art = Article.objects.get(id=art.id)
self.assertEqual(new_art.headline, 'New headline')
def test_m2m_editing(self):
self.create_basic_data()
form_data = {
'headline': 'New headline',
'slug': 'new-headline',
'pub_date': '1988-01-04',
'writer': str(self.w_royko.pk),
'article': 'Hello.',
'categories': [str(self.c1.id), str(self.c2.id)]
}
# Create a new article, with categories, via the form.
f = ArticleForm(form_data)
new_art = f.save()
new_art = Article.objects.get(id=new_art.id)
art_id_1 = new_art.id
self.assertSequenceEqual(new_art.categories.order_by('name'), [self.c1, self.c2])
# Now, submit form data with no categories. This deletes the existing categories.
form_data['categories'] = []
f = ArticleForm(form_data, instance=new_art)
new_art = f.save()
self.assertEqual(new_art.id, art_id_1)
new_art = Article.objects.get(id=art_id_1)
self.assertSequenceEqual(new_art.categories.all(), [])
# Create a new article, with no categories, via the form.
f = ArticleForm(form_data)
new_art = f.save()
art_id_2 = new_art.id
self.assertNotIn(art_id_2, (None, art_id_1))
new_art = Article.objects.get(id=art_id_2)
self.assertSequenceEqual(new_art.categories.all(), [])
# Create a new article, with categories, via the form, but use commit=False.
# The m2m data won't be saved until save_m2m() is invoked on the form.
form_data['categories'] = [str(self.c1.id), str(self.c2.id)]
f = ArticleForm(form_data)
new_art = f.save(commit=False)
# Manually save the instance
new_art.save()
art_id_3 = new_art.id
self.assertNotIn(art_id_3, (None, art_id_1, art_id_2))
# The instance doesn't have m2m data yet
new_art = Article.objects.get(id=art_id_3)
self.assertSequenceEqual(new_art.categories.all(), [])
# Save the m2m data on the form
f.save_m2m()
self.assertSequenceEqual(new_art.categories.order_by('name'), [self.c1, self.c2])
def test_custom_form_fields(self):
# Here, we define a custom ModelForm. Because it happens to have the same fields as
# the Category model, we can just call the form's save() to apply its changes to an
# existing Category instance.
class ShortCategory(forms.ModelForm):
name = forms.CharField(max_length=5)
slug = forms.CharField(max_length=5)
url = forms.CharField(max_length=3)
class Meta:
model = Category
fields = '__all__'
cat = Category.objects.create(name='Third test')
form = ShortCategory({'name': 'Third', 'slug': 'third', 'url': '3rd'}, instance=cat)
self.assertEqual(form.save().name, 'Third')
self.assertEqual(Category.objects.get(id=cat.id).name, 'Third')
def test_runtime_choicefield_populated(self):
self.maxDiff = None
# Here, we demonstrate that choices for a ForeignKey ChoiceField are determined
# at runtime, based on the data in the database when the form is displayed, not
# the data in the database when the form is instantiated.
self.create_basic_data()
f = ArticleForm(auto_id=False)
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" required></li>
<li>Writer: <select name="writer" required>
<option value="" selected>---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article" required></textarea></li>
<li>Categories: <select multiple name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select> </li>
<li>Status: <select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (self.w_woodward.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk))
c4 = Category.objects.create(name='Fourth', url='4th')
w_bernstein = Writer.objects.create(name='Carl Bernstein')
self.assertHTMLEqual(
f.as_ul(),
'''<li>Headline: <input type="text" name="headline" maxlength="50" required></li>
<li>Slug: <input type="text" name="slug" maxlength="50" required></li>
<li>Pub date: <input type="text" name="pub_date" required></li>
<li>Writer: <select name="writer" required>
<option value="" selected>---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Carl Bernstein</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article" required></textarea></li>
<li>Categories: <select multiple name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
<option value="%s">Fourth</option>
</select></li>
<li>Status: <select name="status">
<option value="" selected>---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (self.w_woodward.pk, w_bernstein.pk, self.w_royko.pk, self.c1.pk, self.c2.pk, self.c3.pk, c4.pk))
def test_recleaning_model_form_instance(self):
"""
Re-cleaning an instance that was added via a ModelForm shouldn't raise
a pk uniqueness error.
"""
class AuthorForm(forms.ModelForm):
class Meta:
model = Author
fields = '__all__'
form = AuthorForm({'full_name': 'Bob'})
self.assertTrue(form.is_valid())
obj = form.save()
obj.name = 'Alice'
obj.full_clean()
def test_validate_foreign_key_uses_default_manager(self):
class MyForm(forms.ModelForm):
class Meta:
model = Article
fields = '__all__'
# Archived writers are filtered out by the default manager.
w = Writer.objects.create(name='Randy', archived=True)
data = {
'headline': 'My Article',
'slug': 'my-article',
'pub_date': datetime.date.today(),
'writer': w.pk,
'article': 'lorem ipsum',
}
form = MyForm(data)
self.assertIs(form.is_valid(), False)
self.assertEqual(
form.errors,
{'writer': ['Select a valid choice. That choice is not one of the available choices.']},
)
def test_validate_foreign_key_to_model_with_overridden_manager(self):
class MyForm(forms.ModelForm):
class Meta:
model = Article
fields = '__all__'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Allow archived authors.
self.fields['writer'].queryset = Writer._base_manager.all()
w = Writer.objects.create(name='Randy', archived=True)
data = {
'headline': 'My Article',
'slug': 'my-article',
'pub_date': datetime.date.today(),
'writer': w.pk,
'article': 'lorem ipsum',
}
form = MyForm(data)
self.assertIs(form.is_valid(), True)
article = form.save()
self.assertEqual(article.writer, w)
class ModelMultipleChoiceFieldTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.c1 = Category.objects.create(name='Entertainment', slug='entertainment', url='entertainment')
cls.c2 = Category.objects.create(name="It's a test", slug='its-test', url='test')
cls.c3 = Category.objects.create(name='Third', slug='third-test', url='third')
def test_model_multiple_choice_field(self):
f = forms.ModelMultipleChoiceField(Category.objects.all())
self.assertEqual(list(f.choices), [
(self.c1.pk, 'Entertainment'),
(self.c2.pk, "It's a test"),
(self.c3.pk, 'Third')])
with self.assertRaises(ValidationError):
f.clean(None)
with self.assertRaises(ValidationError):
f.clean([])
self.assertCountEqual(f.clean([self.c1.id]), [self.c1])
self.assertCountEqual(f.clean([self.c2.id]), [self.c2])
self.assertCountEqual(f.clean([str(self.c1.id)]), [self.c1])
self.assertCountEqual(
f.clean([str(self.c1.id), str(self.c2.id)]),
[self.c1, self.c2],
)
self.assertCountEqual(
f.clean([self.c1.id, str(self.c2.id)]),
[self.c1, self.c2],
)
self.assertCountEqual(
f.clean((self.c1.id, str(self.c2.id))),
[self.c1, self.c2],
)
with self.assertRaises(ValidationError):
f.clean(['100'])
with self.assertRaises(ValidationError):
f.clean('hello')
with self.assertRaises(ValidationError):
f.clean(['fail'])
# Invalid types that require TypeError to be caught (#22808).
with self.assertRaises(ValidationError):
f.clean([['fail']])
with self.assertRaises(ValidationError):
f.clean([{'foo': 'bar'}])
# Add a Category object *after* the ModelMultipleChoiceField has already been
# instantiated. This proves clean() checks the database during clean() rather
# than caching it at time of instantiation.
# Note, we are using an id of 1006 here since tests that run before
# this may create categories with primary keys up to 6. Use
# a number that will not conflict.
c6 = Category.objects.create(id=1006, name='Sixth', url='6th')
self.assertCountEqual(f.clean([c6.id]), [c6])
# Delete a Category object *after* the ModelMultipleChoiceField has already been
# instantiated. This proves clean() checks the database during clean() rather
# than caching it at time of instantiation.
Category.objects.get(url='6th').delete()
with self.assertRaises(ValidationError):
f.clean([c6.id])
def test_model_multiple_choice_required_false(self):
f = forms.ModelMultipleChoiceField(Category.objects.all(), required=False)
self.assertIsInstance(f.clean([]), EmptyQuerySet)
self.assertIsInstance(f.clean(()), EmptyQuerySet)
with self.assertRaises(ValidationError):
f.clean(['0'])
with self.assertRaises(ValidationError):
f.clean([str(self.c3.id), '0'])
with self.assertRaises(ValidationError):
f.clean([str(self.c1.id), '0'])
# queryset can be changed after the field is created.
f.queryset = Category.objects.exclude(name='Third')
self.assertEqual(list(f.choices), [
(self.c1.pk, 'Entertainment'),
(self.c2.pk, "It's a test")])
self.assertSequenceEqual(f.clean([self.c2.id]), [self.c2])
with self.assertRaises(ValidationError):
f.clean([self.c3.id])
with self.assertRaises(ValidationError):
f.clean([str(self.c2.id), str(self.c3.id)])
f.queryset = Category.objects.all()
f.label_from_instance = lambda obj: "multicategory " + str(obj)
self.assertEqual(list(f.choices), [
(self.c1.pk, 'multicategory Entertainment'),
(self.c2.pk, "multicategory It's a test"),
(self.c3.pk, 'multicategory Third')])
def test_model_multiple_choice_number_of_queries(self):
"""
ModelMultipleChoiceField does O(1) queries instead of O(n) (#10156).
"""
persons = [Writer.objects.create(name="Person %s" % i) for i in range(30)]
f = forms.ModelMultipleChoiceField(queryset=Writer.objects.all())
self.assertNumQueries(1, f.clean, [p.pk for p in persons[1:11:2]])
def test_model_multiple_choice_run_validators(self):
"""
ModelMultipleChoiceField run given validators (#14144).
"""
for i in range(30):
Writer.objects.create(name="Person %s" % i)
self._validator_run = False
def my_validator(value):
self._validator_run = True
f = forms.ModelMultipleChoiceField(queryset=Writer.objects.all(), validators=[my_validator])
f.clean([p.pk for p in Writer.objects.all()[8:9]])
self.assertTrue(self._validator_run)
def test_model_multiple_choice_show_hidden_initial(self):
"""
Test support of show_hidden_initial by ModelMultipleChoiceField.
"""
class WriterForm(forms.Form):
persons = forms.ModelMultipleChoiceField(show_hidden_initial=True, queryset=Writer.objects.all())
person1 = Writer.objects.create(name="Person 1")
person2 = Writer.objects.create(name="Person 2")
form = WriterForm(
initial={'persons': [person1, person2]},
data={
'initial-persons': [str(person1.pk), str(person2.pk)],
'persons': [str(person1.pk), str(person2.pk)],
},
)
self.assertTrue(form.is_valid())
self.assertFalse(form.has_changed())
form = WriterForm(
initial={'persons': [person1, person2]},
data={
'initial-persons': [str(person1.pk), str(person2.pk)],
'persons': [str(person2.pk)],
},
)
self.assertTrue(form.is_valid())
self.assertTrue(form.has_changed())
def test_model_multiple_choice_field_22745(self):
"""
#22745 -- Make sure that ModelMultipleChoiceField with
CheckboxSelectMultiple widget doesn't produce unnecessary db queries
when accessing its BoundField's attrs.
"""
class ModelMultipleChoiceForm(forms.Form):
categories = forms.ModelMultipleChoiceField(Category.objects.all(), widget=forms.CheckboxSelectMultiple)
form = ModelMultipleChoiceForm()
field = form['categories'] # BoundField
template = Template('{{ field.name }}{{ field }}{{ field.help_text }}')
with self.assertNumQueries(1):
template.render(Context({'field': field}))
def test_show_hidden_initial_changed_queries_efficiently(self):
class WriterForm(forms.Form):
persons = forms.ModelMultipleChoiceField(
show_hidden_initial=True, queryset=Writer.objects.all())
writers = (Writer.objects.create(name=str(x)) for x in range(0, 50))
writer_pks = tuple(x.pk for x in writers)
form = WriterForm(data={'initial-persons': writer_pks})
with self.assertNumQueries(1):
self.assertTrue(form.has_changed())
def test_clean_does_deduplicate_values(self):
class PersonForm(forms.Form):
persons = forms.ModelMultipleChoiceField(queryset=Person.objects.all())
person1 = Person.objects.create(name='Person 1')
form = PersonForm(data={})
queryset = form.fields['persons'].clean([str(person1.pk)] * 50)
sql, params = queryset.query.sql_with_params()
self.assertEqual(len(params), 1)
def test_to_field_name_with_initial_data(self):
class ArticleCategoriesForm(forms.ModelForm):
categories = forms.ModelMultipleChoiceField(Category.objects.all(), to_field_name='slug')
class Meta:
model = Article
fields = ['categories']
article = Article.objects.create(
headline='Test article',
slug='test-article',
pub_date=datetime.date(1988, 1, 4),
writer=Writer.objects.create(name='Test writer'),
article='Hello.',
)
article.categories.add(self.c2, self.c3)
form = ArticleCategoriesForm(instance=article)
self.assertCountEqual(form['categories'].value(), [self.c2.slug, self.c3.slug])
class ModelOneToOneFieldTests(TestCase):
def test_modelform_onetoonefield(self):
class ImprovedArticleForm(forms.ModelForm):
class Meta:
model = ImprovedArticle
fields = '__all__'
class ImprovedArticleWithParentLinkForm(forms.ModelForm):
class Meta:
model = ImprovedArticleWithParentLink
fields = '__all__'
self.assertEqual(list(ImprovedArticleForm.base_fields), ['article'])
self.assertEqual(list(ImprovedArticleWithParentLinkForm.base_fields), [])
def test_modelform_subclassed_model(self):
class BetterWriterForm(forms.ModelForm):
class Meta:
# BetterWriter model is a subclass of Writer with an additional `score` field
model = BetterWriter
fields = '__all__'
bw = BetterWriter.objects.create(name='Joe Better', score=10)
self.assertEqual(sorted(model_to_dict(bw)), ['id', 'name', 'score', 'writer_ptr'])
self.assertEqual(sorted(model_to_dict(bw, fields=[])), [])
self.assertEqual(sorted(model_to_dict(bw, fields=['id', 'name'])), ['id', 'name'])
self.assertEqual(sorted(model_to_dict(bw, exclude=[])), ['id', 'name', 'score', 'writer_ptr'])
self.assertEqual(sorted(model_to_dict(bw, exclude=['id', 'name'])), ['score', 'writer_ptr'])
form = BetterWriterForm({'name': 'Some Name', 'score': 12})
self.assertTrue(form.is_valid())
bw2 = form.save()
self.assertEqual(bw2.score, 12)
def test_onetoonefield(self):
class WriterProfileForm(forms.ModelForm):
class Meta:
# WriterProfile has a OneToOneField to Writer
model = WriterProfile
fields = '__all__'
self.w_royko = Writer.objects.create(name='Mike Royko')
self.w_woodward = Writer.objects.create(name='Bob Woodward')
form = WriterProfileForm()
self.assertHTMLEqual(
form.as_p(),
'''<p><label for="id_writer">Writer:</label> <select name="writer" id="id_writer" required>
<option value="" selected>---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></p>
<p><label for="id_age">Age:</label> <input type="number" name="age" id="id_age" min="0" required></p>''' % (
self.w_woodward.pk, self.w_royko.pk,
)
)
data = {
'writer': str(self.w_woodward.pk),
'age': '65',
}
form = WriterProfileForm(data)
instance = form.save()
self.assertEqual(str(instance), 'Bob Woodward is 65')
form = WriterProfileForm(instance=instance)
self.assertHTMLEqual(
form.as_p(),
'''<p><label for="id_writer">Writer:</label> <select name="writer" id="id_writer" required>
<option value="">---------</option>
<option value="%s" selected>Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></p>
<p><label for="id_age">Age:</label>
<input type="number" name="age" value="65" id="id_age" min="0" required></p>''' % (
self.w_woodward.pk, self.w_royko.pk,
)
)
def test_assignment_of_none(self):
class AuthorForm(forms.ModelForm):
class Meta:
model = Author
fields = ['publication', 'full_name']
publication = Publication.objects.create(title="Pravda", date_published=datetime.date(1991, 8, 22))
author = Author.objects.create(publication=publication, full_name='John Doe')
form = AuthorForm({'publication': '', 'full_name': 'John Doe'}, instance=author)
self.assertTrue(form.is_valid())
self.assertIsNone(form.cleaned_data['publication'])
author = form.save()
# author object returned from form still retains original publication object
# that's why we need to retrieve it from database again
new_author = Author.objects.get(pk=author.pk)
self.assertIsNone(new_author.publication)
def test_assignment_of_none_null_false(self):
class AuthorForm(forms.ModelForm):
class Meta:
model = Author1
fields = ['publication', 'full_name']
publication = Publication.objects.create(title="Pravda", date_published=datetime.date(1991, 8, 22))
author = Author1.objects.create(publication=publication, full_name='John Doe')
form = AuthorForm({'publication': '', 'full_name': 'John Doe'}, instance=author)
self.assertFalse(form.is_valid())
class FileAndImageFieldTests(TestCase):
def test_clean_false(self):
"""
If the ``clean`` method on a non-required FileField receives False as
the data (meaning clear the field value), it returns False, regardless
of the value of ``initial``.
"""
f = forms.FileField(required=False)
self.assertIs(f.clean(False), False)
self.assertIs(f.clean(False, 'initial'), False)
def test_clean_false_required(self):
"""
If the ``clean`` method on a required FileField receives False as the
data, it has the same effect as None: initial is returned if non-empty,
otherwise the validation catches the lack of a required value.
"""
f = forms.FileField(required=True)
self.assertEqual(f.clean(False, 'initial'), 'initial')
with self.assertRaises(ValidationError):
f.clean(False)
def test_full_clear(self):
"""
Integration happy-path test that a model FileField can actually be set
and cleared via a ModelForm.
"""
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
fields = '__all__'
form = DocumentForm()
self.assertIn('name="myfile"', str(form))
self.assertNotIn('myfile-clear', str(form))
form = DocumentForm(files={'myfile': SimpleUploadedFile('something.txt', b'content')})
self.assertTrue(form.is_valid())
doc = form.save(commit=False)
self.assertEqual(doc.myfile.name, 'something.txt')
form = DocumentForm(instance=doc)
self.assertIn('myfile-clear', str(form))
form = DocumentForm(instance=doc, data={'myfile-clear': 'true'})
doc = form.save(commit=False)
self.assertFalse(doc.myfile)
def test_clear_and_file_contradiction(self):
"""
If the user submits a new file upload AND checks the clear checkbox,
they get a validation error, and the bound redisplay of the form still
includes the current file and the clear checkbox.
"""
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
fields = '__all__'
form = DocumentForm(files={'myfile': SimpleUploadedFile('something.txt', b'content')})
self.assertTrue(form.is_valid())
doc = form.save(commit=False)
form = DocumentForm(
instance=doc,
files={'myfile': SimpleUploadedFile('something.txt', b'content')},
data={'myfile-clear': 'true'},
)
self.assertTrue(not form.is_valid())
self.assertEqual(form.errors['myfile'],
['Please either submit a file or check the clear checkbox, not both.'])
rendered = str(form)
self.assertIn('something.txt', rendered)
self.assertIn('myfile-clear', rendered)
def test_render_empty_file_field(self):
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
fields = '__all__'
doc = Document.objects.create()
form = DocumentForm(instance=doc)
self.assertHTMLEqual(
str(form['myfile']),
'<input id="id_myfile" name="myfile" type="file">'
)
def test_file_field_data(self):
# Test conditions when files is either not given or empty.
f = TextFileForm(data={'description': 'Assistance'})
self.assertFalse(f.is_valid())
f = TextFileForm(data={'description': 'Assistance'}, files={})
self.assertFalse(f.is_valid())
# Upload a file and ensure it all works as expected.
f = TextFileForm(
data={'description': 'Assistance'},
files={'file': SimpleUploadedFile('test1.txt', b'hello world')},
)
self.assertTrue(f.is_valid())
self.assertEqual(type(f.cleaned_data['file']), SimpleUploadedFile)
instance = f.save()
self.assertEqual(instance.file.name, 'tests/test1.txt')
instance.file.delete()
# If the previous file has been deleted, the file name can be reused
f = TextFileForm(
data={'description': 'Assistance'},
files={'file': SimpleUploadedFile('test1.txt', b'hello world')},
)
self.assertTrue(f.is_valid())
self.assertEqual(type(f.cleaned_data['file']), SimpleUploadedFile)
instance = f.save()
self.assertEqual(instance.file.name, 'tests/test1.txt')
# Check if the max_length attribute has been inherited from the model.
f = TextFileForm(
data={'description': 'Assistance'},
files={'file': SimpleUploadedFile('test-maxlength.txt', b'hello world')},
)
self.assertFalse(f.is_valid())
# Edit an instance that already has the file defined in the model. This will not
# save the file again, but leave it exactly as it is.
f = TextFileForm({'description': 'Assistance'}, instance=instance)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['file'].name, 'tests/test1.txt')
instance = f.save()
self.assertEqual(instance.file.name, 'tests/test1.txt')
# Delete the current file since this is not done by Django.
instance.file.delete()
# Override the file by uploading a new one.
f = TextFileForm(
data={'description': 'Assistance'},
files={'file': SimpleUploadedFile('test2.txt', b'hello world')},
instance=instance,
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.file.name, 'tests/test2.txt')
# Delete the current file since this is not done by Django.
instance.file.delete()
instance.delete()
def test_filefield_required_false(self):
# Test the non-required FileField
f = TextFileForm(data={'description': 'Assistance'})
f.fields['file'].required = False
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.file.name, '')
f = TextFileForm(
data={'description': 'Assistance'},
files={'file': SimpleUploadedFile('test3.txt', b'hello world')},
instance=instance,
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.file.name, 'tests/test3.txt')
# Instance can be edited w/out re-uploading the file and existing file should be preserved.
f = TextFileForm({'description': 'New Description'}, instance=instance)
f.fields['file'].required = False
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.description, 'New Description')
self.assertEqual(instance.file.name, 'tests/test3.txt')
# Delete the current file since this is not done by Django.
instance.file.delete()
instance.delete()
def test_custom_file_field_save(self):
"""
Regression for #11149: save_form_data should be called only once
"""
class CFFForm(forms.ModelForm):
class Meta:
model = CustomFF
fields = '__all__'
# It's enough that the form saves without error -- the custom save routine will
# generate an AssertionError if it is called more than once during save.
form = CFFForm(data={'f': None})
form.save()
def test_file_field_multiple_save(self):
"""
Simulate a file upload and check how many times Model.save() gets
called. Test for bug #639.
"""
class PhotoForm(forms.ModelForm):
class Meta:
model = Photo
fields = '__all__'
# Grab an image for testing.
filename = os.path.join(os.path.dirname(__file__), 'test.png')
with open(filename, "rb") as fp:
img = fp.read()
# Fake a POST QueryDict and FILES MultiValueDict.
data = {'title': 'Testing'}
files = {"image": SimpleUploadedFile('test.png', img, 'image/png')}
form = PhotoForm(data=data, files=files)
p = form.save()
try:
# Check the savecount stored on the object (see the model).
self.assertEqual(p._savecount, 1)
finally:
# Delete the "uploaded" file to avoid clogging /tmp.
p = Photo.objects.get()
p.image.delete(save=False)
def test_file_path_field_blank(self):
"""FilePathField(blank=True) includes the empty option."""
class FPForm(forms.ModelForm):
class Meta:
model = FilePathModel
fields = '__all__'
form = FPForm()
self.assertEqual([name for _, name in form['path'].field.choices], ['---------', 'models.py'])
@skipUnless(test_images, "Pillow not installed")
def test_image_field(self):
# ImageField and FileField are nearly identical, but they differ slightly when
# it comes to validation. This specifically tests that #6302 is fixed for
# both file fields and image fields.
with open(os.path.join(os.path.dirname(__file__), 'test.png'), 'rb') as fp:
image_data = fp.read()
with open(os.path.join(os.path.dirname(__file__), 'test2.png'), 'rb') as fp:
image_data2 = fp.read()
f = ImageFileForm(
data={'description': 'An image'},
files={'image': SimpleUploadedFile('test.png', image_data)},
)
self.assertTrue(f.is_valid())
self.assertEqual(type(f.cleaned_data['image']), SimpleUploadedFile)
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test.png')
self.assertEqual(instance.width, 16)
self.assertEqual(instance.height, 16)
# Delete the current file since this is not done by Django, but don't save
# because the dimension fields are not null=True.
instance.image.delete(save=False)
f = ImageFileForm(
data={'description': 'An image'},
files={'image': SimpleUploadedFile('test.png', image_data)},
)
self.assertTrue(f.is_valid())
self.assertEqual(type(f.cleaned_data['image']), SimpleUploadedFile)
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test.png')
self.assertEqual(instance.width, 16)
self.assertEqual(instance.height, 16)
# Edit an instance that already has the (required) image defined in the model. This will not
# save the image again, but leave it exactly as it is.
f = ImageFileForm(data={'description': 'Look, it changed'}, instance=instance)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['image'].name, 'tests/test.png')
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test.png')
self.assertEqual(instance.height, 16)
self.assertEqual(instance.width, 16)
# Delete the current file since this is not done by Django, but don't save
# because the dimension fields are not null=True.
instance.image.delete(save=False)
# Override the file by uploading a new one.
f = ImageFileForm(
data={'description': 'Changed it'},
files={'image': SimpleUploadedFile('test2.png', image_data2)},
instance=instance,
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test2.png')
self.assertEqual(instance.height, 32)
self.assertEqual(instance.width, 48)
# Delete the current file since this is not done by Django, but don't save
# because the dimension fields are not null=True.
instance.image.delete(save=False)
instance.delete()
f = ImageFileForm(
data={'description': 'Changed it'},
files={'image': SimpleUploadedFile('test2.png', image_data2)},
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test2.png')
self.assertEqual(instance.height, 32)
self.assertEqual(instance.width, 48)
# Delete the current file since this is not done by Django, but don't save
# because the dimension fields are not null=True.
instance.image.delete(save=False)
instance.delete()
# Test the non-required ImageField
# Note: In Oracle, we expect a null ImageField to return '' instead of
# None.
if connection.features.interprets_empty_strings_as_nulls:
expected_null_imagefield_repr = ''
else:
expected_null_imagefield_repr = None
f = OptionalImageFileForm(data={'description': 'Test'})
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, expected_null_imagefield_repr)
self.assertIsNone(instance.width)
self.assertIsNone(instance.height)
f = OptionalImageFileForm(
data={'description': 'And a final one'},
files={'image': SimpleUploadedFile('test3.png', image_data)},
instance=instance,
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test3.png')
self.assertEqual(instance.width, 16)
self.assertEqual(instance.height, 16)
# Editing the instance without re-uploading the image should not affect
# the image or its width/height properties.
f = OptionalImageFileForm({'description': 'New Description'}, instance=instance)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.description, 'New Description')
self.assertEqual(instance.image.name, 'tests/test3.png')
self.assertEqual(instance.width, 16)
self.assertEqual(instance.height, 16)
# Delete the current file since this is not done by Django.
instance.image.delete()
instance.delete()
f = OptionalImageFileForm(
data={'description': 'And a final one'},
files={'image': SimpleUploadedFile('test4.png', image_data2)}
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'tests/test4.png')
self.assertEqual(instance.width, 48)
self.assertEqual(instance.height, 32)
instance.delete()
# Test callable upload_to behavior that's dependent on the value of another field in the model
f = ImageFileForm(
data={'description': 'And a final one', 'path': 'foo'},
files={'image': SimpleUploadedFile('test4.png', image_data)},
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'foo/test4.png')
instance.delete()
# Editing an instance that has an image without an extension shouldn't
# fail validation. First create:
f = NoExtensionImageFileForm(
data={'description': 'An image'},
files={'image': SimpleUploadedFile('test.png', image_data)},
)
self.assertTrue(f.is_valid())
instance = f.save()
self.assertEqual(instance.image.name, 'tests/no_extension')
# Then edit:
f = NoExtensionImageFileForm(data={'description': 'Edited image'}, instance=instance)
self.assertTrue(f.is_valid())
class ModelOtherFieldTests(SimpleTestCase):
def test_big_integer_field(self):
bif = BigIntForm({'biggie': '-9223372036854775808'})
self.assertTrue(bif.is_valid())
bif = BigIntForm({'biggie': '-9223372036854775809'})
self.assertFalse(bif.is_valid())
self.assertEqual(
bif.errors,
{'biggie': ['Ensure this value is greater than or equal to -9223372036854775808.']}
)
bif = BigIntForm({'biggie': '9223372036854775807'})
self.assertTrue(bif.is_valid())
bif = BigIntForm({'biggie': '9223372036854775808'})
self.assertFalse(bif.is_valid())
self.assertEqual(bif.errors, {'biggie': ['Ensure this value is less than or equal to 9223372036854775807.']})
def test_url_on_modelform(self):
"Check basic URL field validation on model forms"
class HomepageForm(forms.ModelForm):
class Meta:
model = Homepage
fields = '__all__'
self.assertFalse(HomepageForm({'url': 'foo'}).is_valid())
self.assertFalse(HomepageForm({'url': 'http://'}).is_valid())
self.assertFalse(HomepageForm({'url': 'http://example'}).is_valid())
self.assertFalse(HomepageForm({'url': 'http://example.'}).is_valid())
self.assertFalse(HomepageForm({'url': 'http://com.'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://localhost'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://example.com'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://www.example.com'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://www.example.com:8000'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://www.example.com/test'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://www.example.com:8000/test'}).is_valid())
self.assertTrue(HomepageForm({'url': 'http://example.com/foo/bar'}).is_valid())
def test_modelform_non_editable_field(self):
"""
When explicitly including a non-editable field in a ModelForm, the
error message should be explicit.
"""
# 'created', non-editable, is excluded by default
self.assertNotIn('created', ArticleForm().fields)
msg = "'created' cannot be specified for Article model form as it is a non-editable field"
with self.assertRaisesMessage(FieldError, msg):
class InvalidArticleForm(forms.ModelForm):
class Meta:
model = Article
fields = ('headline', 'created')
def test_http_prefixing(self):
"""
If the http:// prefix is omitted on form input, the field adds it again. (Refs #13613)
"""
class HomepageForm(forms.ModelForm):
class Meta:
model = Homepage
fields = '__all__'
form = HomepageForm({'url': 'example.com'})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data['url'], 'http://example.com')
form = HomepageForm({'url': 'example.com/test'})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data['url'], 'http://example.com/test')
class OtherModelFormTests(TestCase):
def test_media_on_modelform(self):
# Similar to a regular Form class you can define custom media to be used on
# the ModelForm.
f = ModelFormWithMedia()
self.assertHTMLEqual(
str(f.media),
'''<link href="/some/form/css" type="text/css" media="all" rel="stylesheet">
<script src="/some/form/javascript"></script>'''
)
def test_choices_type(self):
# Choices on CharField and IntegerField
f = ArticleForm()
with self.assertRaises(ValidationError):
f.fields['status'].clean('42')
f = ArticleStatusForm()
with self.assertRaises(ValidationError):
f.fields['status'].clean('z')
def test_prefetch_related_queryset(self):
"""
ModelChoiceField should respect a prefetch_related() on its queryset.
"""
blue = Colour.objects.create(name='blue')
red = Colour.objects.create(name='red')
multicolor_item = ColourfulItem.objects.create()
multicolor_item.colours.add(blue, red)
red_item = ColourfulItem.objects.create()
red_item.colours.add(red)
class ColorModelChoiceField(forms.ModelChoiceField):
def label_from_instance(self, obj):
return ', '.join(c.name for c in obj.colours.all())
field = ColorModelChoiceField(ColourfulItem.objects.prefetch_related('colours'))
with self.assertNumQueries(3): # would be 4 if prefetch is ignored
self.assertEqual(tuple(field.choices), (
('', '---------'),
(multicolor_item.pk, 'blue, red'),
(red_item.pk, 'red'),
))
def test_foreignkeys_which_use_to_field(self):
apple = Inventory.objects.create(barcode=86, name='Apple')
pear = Inventory.objects.create(barcode=22, name='Pear')
core = Inventory.objects.create(barcode=87, name='Core', parent=apple)
field = forms.ModelChoiceField(Inventory.objects.all(), to_field_name='barcode')
self.assertEqual(tuple(field.choices), (
('', '---------'),
(86, 'Apple'),
(87, 'Core'),
(22, 'Pear')))
form = InventoryForm(instance=core)
self.assertHTMLEqual(str(form['parent']), '''<select name="parent" id="id_parent">
<option value="">---------</option>
<option value="86" selected>Apple</option>
<option value="87">Core</option>
<option value="22">Pear</option>
</select>''')
data = model_to_dict(core)
data['parent'] = '22'
form = InventoryForm(data=data, instance=core)
core = form.save()
self.assertEqual(core.parent.name, 'Pear')
class CategoryForm(forms.ModelForm):
description = forms.CharField()
class Meta:
model = Category
fields = ['description', 'url']
self.assertEqual(list(CategoryForm.base_fields), ['description', 'url'])
self.assertHTMLEqual(
str(CategoryForm()),
'''<tr><th><label for="id_description">Description:</label></th>
<td><input type="text" name="description" id="id_description" required></td></tr>
<tr><th><label for="id_url">The URL:</label></th>
<td><input id="id_url" type="text" name="url" maxlength="40" required></td></tr>'''
)
# to_field_name should also work on ModelMultipleChoiceField ##################
field = forms.ModelMultipleChoiceField(Inventory.objects.all(), to_field_name='barcode')
self.assertEqual(tuple(field.choices), ((86, 'Apple'), (87, 'Core'), (22, 'Pear')))
self.assertSequenceEqual(field.clean([86]), [apple])
form = SelectInventoryForm({'items': [87, 22]})
self.assertTrue(form.is_valid())
self.assertEqual(len(form.cleaned_data), 1)
self.assertSequenceEqual(form.cleaned_data['items'], [core, pear])
def test_model_field_that_returns_none_to_exclude_itself_with_explicit_fields(self):
self.assertEqual(list(CustomFieldForExclusionForm.base_fields), ['name'])
self.assertHTMLEqual(
str(CustomFieldForExclusionForm()),
'''<tr><th><label for="id_name">Name:</label></th>
<td><input id="id_name" type="text" name="name" maxlength="10" required></td></tr>'''
)
def test_iterable_model_m2m(self):
class ColourfulItemForm(forms.ModelForm):
class Meta:
model = ColourfulItem
fields = '__all__'
colour = Colour.objects.create(name='Blue')
form = ColourfulItemForm()
self.maxDiff = 1024
self.assertHTMLEqual(
form.as_p(),
"""<p><label for="id_name">Name:</label> <input id="id_name" type="text" name="name" maxlength="50" required></p>
<p><label for="id_colours">Colours:</label>
<select multiple name="colours" id="id_colours" required>
<option value="%(blue_pk)s">Blue</option>
</select></p>"""
% {'blue_pk': colour.pk})
def test_callable_field_default(self):
class PublicationDefaultsForm(forms.ModelForm):
class Meta:
model = PublicationDefaults
fields = ('title', 'date_published', 'mode', 'category')
self.maxDiff = 2000
form = PublicationDefaultsForm()
today_str = str(datetime.date.today())
self.assertHTMLEqual(
form.as_p(),
"""
<p><label for="id_title">Title:</label>
<input id="id_title" maxlength="30" name="title" type="text" required></p>
<p><label for="id_date_published">Date published:</label>
<input id="id_date_published" name="date_published" type="text" value="{0}" required>
<input id="initial-id_date_published" name="initial-date_published" type="hidden" value="{0}"></p>
<p><label for="id_mode">Mode:</label> <select id="id_mode" name="mode">
<option value="di" selected>direct</option>
<option value="de">delayed</option></select>
<input id="initial-id_mode" name="initial-mode" type="hidden" value="di"></p>
<p><label for="id_category">Category:</label> <select id="id_category" name="category">
<option value="1">Games</option>
<option value="2">Comics</option>
<option value="3" selected>Novel</option></select>
<input id="initial-id_category" name="initial-category" type="hidden" value="3">
""".format(today_str)
)
empty_data = {
'title': '',
'date_published': today_str,
'initial-date_published': today_str,
'mode': 'di',
'initial-mode': 'di',
'category': '3',
'initial-category': '3',
}
bound_form = PublicationDefaultsForm(empty_data)
self.assertFalse(bound_form.has_changed())
class ModelFormCustomErrorTests(SimpleTestCase):
def test_custom_error_messages(self):
data = {'name1': '@#$!!**@#$', 'name2': '@#$!!**@#$'}
errors = CustomErrorMessageForm(data).errors
self.assertHTMLEqual(
str(errors['name1']),
'<ul class="errorlist"><li>Form custom error message.</li></ul>'
)
self.assertHTMLEqual(
str(errors['name2']),
'<ul class="errorlist"><li>Model custom error message.</li></ul>'
)
def test_model_clean_error_messages(self):
data = {'name1': 'FORBIDDEN_VALUE', 'name2': 'ABC'}
form = CustomErrorMessageForm(data)
self.assertFalse(form.is_valid())
self.assertHTMLEqual(
str(form.errors['name1']),
'<ul class="errorlist"><li>Model.clean() error messages.</li></ul>'
)
data = {'name1': 'FORBIDDEN_VALUE2', 'name2': 'ABC'}
form = CustomErrorMessageForm(data)
self.assertFalse(form.is_valid())
self.assertHTMLEqual(
str(form.errors['name1']),
'<ul class="errorlist"><li>Model.clean() error messages (simpler syntax).</li></ul>'
)
data = {'name1': 'GLOBAL_ERROR', 'name2': 'ABC'}
form = CustomErrorMessageForm(data)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors['__all__'], ['Global error message.'])
class CustomCleanTests(TestCase):
def test_override_clean(self):
"""
Regression for #12596: Calling super from ModelForm.clean() should be
optional.
"""
class TripleFormWithCleanOverride(forms.ModelForm):
class Meta:
model = Triple
fields = '__all__'
def clean(self):
if not self.cleaned_data['left'] == self.cleaned_data['right']:
raise ValidationError('Left and right should be equal')
return self.cleaned_data
form = TripleFormWithCleanOverride({'left': 1, 'middle': 2, 'right': 1})
self.assertTrue(form.is_valid())
# form.instance.left will be None if the instance was not constructed
# by form.full_clean().
self.assertEqual(form.instance.left, 1)
def test_model_form_clean_applies_to_model(self):
"""
Regression test for #12960. Make sure the cleaned_data returned from
ModelForm.clean() is applied to the model instance.
"""
class CategoryForm(forms.ModelForm):
class Meta:
model = Category
fields = '__all__'
def clean(self):
self.cleaned_data['name'] = self.cleaned_data['name'].upper()
return self.cleaned_data
data = {'name': 'Test', 'slug': 'test', 'url': '/test'}
form = CategoryForm(data)
category = form.save()
self.assertEqual(category.name, 'TEST')
class ModelFormInheritanceTests(SimpleTestCase):
def test_form_subclass_inheritance(self):
class Form(forms.Form):
age = forms.IntegerField()
class ModelForm(forms.ModelForm, Form):
class Meta:
model = Writer
fields = '__all__'
self.assertEqual(list(ModelForm().fields), ['name', 'age'])
def test_field_removal(self):
class ModelForm(forms.ModelForm):
class Meta:
model = Writer
fields = '__all__'
class Mixin:
age = None
class Form(forms.Form):
age = forms.IntegerField()
class Form2(forms.Form):
foo = forms.IntegerField()
self.assertEqual(list(ModelForm().fields), ['name'])
self.assertEqual(list(type('NewForm', (Mixin, Form), {})().fields), [])
self.assertEqual(list(type('NewForm', (Form2, Mixin, Form), {})().fields), ['foo'])
self.assertEqual(list(type('NewForm', (Mixin, ModelForm, Form), {})().fields), ['name'])
self.assertEqual(list(type('NewForm', (ModelForm, Mixin, Form), {})().fields), ['name'])
self.assertEqual(list(type('NewForm', (ModelForm, Form, Mixin), {})().fields), ['name', 'age'])
self.assertEqual(list(type('NewForm', (ModelForm, Form), {'age': None})().fields), ['name'])
def test_field_removal_name_clashes(self):
"""
Form fields can be removed in subclasses by setting them to None
(#22510).
"""
class MyForm(forms.ModelForm):
media = forms.CharField()
class Meta:
model = Writer
fields = '__all__'
class SubForm(MyForm):
media = None
self.assertIn('media', MyForm().fields)
self.assertNotIn('media', SubForm().fields)
self.assertTrue(hasattr(MyForm, 'media'))
self.assertTrue(hasattr(SubForm, 'media'))
class StumpJokeForm(forms.ModelForm):
class Meta:
model = StumpJoke
fields = '__all__'
class CustomFieldWithQuerysetButNoLimitChoicesTo(forms.Field):
queryset = 42
class StumpJokeWithCustomFieldForm(forms.ModelForm):
custom = CustomFieldWithQuerysetButNoLimitChoicesTo()
class Meta:
model = StumpJoke
fields = ()
class LimitChoicesToTests(TestCase):
"""
Tests the functionality of ``limit_choices_to``.
"""
@classmethod
def setUpTestData(cls):
cls.threepwood = Character.objects.create(
username='threepwood',
last_action=datetime.datetime.today() + datetime.timedelta(days=1),
)
cls.marley = Character.objects.create(
username='marley',
last_action=datetime.datetime.today() - datetime.timedelta(days=1),
)
def test_limit_choices_to_callable_for_fk_rel(self):
"""
A ForeignKey can use limit_choices_to as a callable (#2554).
"""
stumpjokeform = StumpJokeForm()
self.assertSequenceEqual(stumpjokeform.fields['most_recently_fooled'].queryset, [self.threepwood])
def test_limit_choices_to_callable_for_m2m_rel(self):
"""
A ManyToManyField can use limit_choices_to as a callable (#2554).
"""
stumpjokeform = StumpJokeForm()
self.assertSequenceEqual(stumpjokeform.fields['most_recently_fooled'].queryset, [self.threepwood])
def test_custom_field_with_queryset_but_no_limit_choices_to(self):
"""
A custom field with a `queryset` attribute but no `limit_choices_to`
works (#23795).
"""
f = StumpJokeWithCustomFieldForm()
self.assertEqual(f.fields['custom'].queryset, 42)
def test_fields_for_model_applies_limit_choices_to(self):
fields = fields_for_model(StumpJoke, ['has_fooled_today'])
self.assertSequenceEqual(fields['has_fooled_today'].queryset, [self.threepwood])
def test_callable_called_each_time_form_is_instantiated(self):
field = StumpJokeForm.base_fields['most_recently_fooled']
with mock.patch.object(field, 'limit_choices_to') as today_callable_dict:
StumpJokeForm()
self.assertEqual(today_callable_dict.call_count, 1)
StumpJokeForm()
self.assertEqual(today_callable_dict.call_count, 2)
StumpJokeForm()
self.assertEqual(today_callable_dict.call_count, 3)
@isolate_apps('model_forms')
def test_limit_choices_to_no_duplicates(self):
joke1 = StumpJoke.objects.create(
funny=True,
most_recently_fooled=self.threepwood,
)
joke2 = StumpJoke.objects.create(
funny=True,
most_recently_fooled=self.threepwood,
)
joke3 = StumpJoke.objects.create(
funny=True,
most_recently_fooled=self.marley,
)
StumpJoke.objects.create(funny=False, most_recently_fooled=self.marley)
joke1.has_fooled_today.add(self.marley, self.threepwood)
joke2.has_fooled_today.add(self.marley)
joke3.has_fooled_today.add(self.marley, self.threepwood)
class CharacterDetails(models.Model):
character1 = models.ForeignKey(
Character,
models.CASCADE,
limit_choices_to=models.Q(
jokes__funny=True,
jokes_today__funny=True,
),
related_name='details_fk_1',
)
character2 = models.ForeignKey(
Character,
models.CASCADE,
limit_choices_to={
'jokes__funny': True,
'jokes_today__funny': True,
},
related_name='details_fk_2',
)
character3 = models.ManyToManyField(
Character,
limit_choices_to=models.Q(
jokes__funny=True,
jokes_today__funny=True,
),
related_name='details_m2m_1',
)
class CharacterDetailsForm(forms.ModelForm):
class Meta:
model = CharacterDetails
fields = '__all__'
form = CharacterDetailsForm()
self.assertCountEqual(
form.fields['character1'].queryset,
[self.marley, self.threepwood],
)
self.assertCountEqual(
form.fields['character2'].queryset,
[self.marley, self.threepwood],
)
self.assertCountEqual(
form.fields['character3'].queryset,
[self.marley, self.threepwood],
)
def test_limit_choices_to_m2m_through(self):
class DiceForm(forms.ModelForm):
class Meta:
model = Dice
fields = ['numbers']
Number.objects.create(value=0)
n1 = Number.objects.create(value=1)
n2 = Number.objects.create(value=2)
form = DiceForm()
self.assertCountEqual(form.fields['numbers'].queryset, [n1, n2])
class FormFieldCallbackTests(SimpleTestCase):
def test_baseform_with_widgets_in_meta(self):
"""Regression for #13095: Using base forms with widgets defined in Meta should not raise errors."""
widget = forms.Textarea()
class BaseForm(forms.ModelForm):
class Meta:
model = Person
widgets = {'name': widget}
fields = "__all__"
Form = modelform_factory(Person, form=BaseForm)
self.assertIsInstance(Form.base_fields['name'].widget, forms.Textarea)
def test_factory_with_widget_argument(self):
""" Regression for #15315: modelform_factory should accept widgets
argument
"""
widget = forms.Textarea()
# Without a widget should not set the widget to textarea
Form = modelform_factory(Person, fields="__all__")
self.assertNotEqual(Form.base_fields['name'].widget.__class__, forms.Textarea)
# With a widget should not set the widget to textarea
Form = modelform_factory(Person, fields="__all__", widgets={'name': widget})
self.assertEqual(Form.base_fields['name'].widget.__class__, forms.Textarea)
def test_modelform_factory_without_fields(self):
""" Regression for #19733 """
message = (
"Calling modelform_factory without defining 'fields' or 'exclude' "
"explicitly is prohibited."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
modelform_factory(Person)
def test_modelform_factory_with_all_fields(self):
""" Regression for #19733 """
form = modelform_factory(Person, fields="__all__")
self.assertEqual(list(form.base_fields), ["name"])
def test_custom_callback(self):
"""A custom formfield_callback is used if provided"""
callback_args = []
def callback(db_field, **kwargs):
callback_args.append((db_field, kwargs))
return db_field.formfield(**kwargs)
widget = forms.Textarea()
class BaseForm(forms.ModelForm):
class Meta:
model = Person
widgets = {'name': widget}
fields = "__all__"
modelform_factory(Person, form=BaseForm, formfield_callback=callback)
id_field, name_field = Person._meta.fields
self.assertEqual(callback_args, [(id_field, {}), (name_field, {'widget': widget})])
def test_bad_callback(self):
# A bad callback provided by user still gives an error
with self.assertRaises(TypeError):
modelform_factory(Person, fields="__all__", formfield_callback='not a function or callable')
def test_inherit_after_custom_callback(self):
def callback(db_field, **kwargs):
if isinstance(db_field, models.CharField):
return forms.CharField(widget=forms.Textarea)
return db_field.formfield(**kwargs)
class BaseForm(forms.ModelForm):
class Meta:
model = Person
fields = '__all__'
NewForm = modelform_factory(Person, form=BaseForm, formfield_callback=callback)
class InheritedForm(NewForm):
pass
for name in NewForm.base_fields:
self.assertEqual(
type(InheritedForm.base_fields[name].widget),
type(NewForm.base_fields[name].widget)
)
class LocalizedModelFormTest(TestCase):
def test_model_form_applies_localize_to_some_fields(self):
class PartiallyLocalizedTripleForm(forms.ModelForm):
class Meta:
model = Triple
localized_fields = ('left', 'right',)
fields = '__all__'
f = PartiallyLocalizedTripleForm({'left': 10, 'middle': 10, 'right': 10})
self.assertTrue(f.is_valid())
self.assertTrue(f.fields['left'].localize)
self.assertFalse(f.fields['middle'].localize)
self.assertTrue(f.fields['right'].localize)
def test_model_form_applies_localize_to_all_fields(self):
class FullyLocalizedTripleForm(forms.ModelForm):
class Meta:
model = Triple
localized_fields = '__all__'
fields = '__all__'
f = FullyLocalizedTripleForm({'left': 10, 'middle': 10, 'right': 10})
self.assertTrue(f.is_valid())
self.assertTrue(f.fields['left'].localize)
self.assertTrue(f.fields['middle'].localize)
self.assertTrue(f.fields['right'].localize)
def test_model_form_refuses_arbitrary_string(self):
msg = (
"BrokenLocalizedTripleForm.Meta.localized_fields "
"cannot be a string. Did you mean to type: ('foo',)?"
)
with self.assertRaisesMessage(TypeError, msg):
class BrokenLocalizedTripleForm(forms.ModelForm):
class Meta:
model = Triple
localized_fields = "foo"
class CustomMetaclass(ModelFormMetaclass):
def __new__(cls, name, bases, attrs):
new = super().__new__(cls, name, bases, attrs)
new.base_fields = {}
return new
class CustomMetaclassForm(forms.ModelForm, metaclass=CustomMetaclass):
pass
class CustomMetaclassTestCase(SimpleTestCase):
def test_modelform_factory_metaclass(self):
new_cls = modelform_factory(Person, fields="__all__", form=CustomMetaclassForm)
self.assertEqual(new_cls.base_fields, {})
class StrictAssignmentTests(SimpleTestCase):
"""
Should a model do anything special with __setattr__() or descriptors which
raise a ValidationError, a model form should catch the error (#24706).
"""
def test_setattr_raises_validation_error_field_specific(self):
"""
A model ValidationError using the dict form should put the error
message into the correct key of form.errors.
"""
form_class = modelform_factory(model=StrictAssignmentFieldSpecific, fields=['title'])
form = form_class(data={'title': 'testing setattr'}, files=None)
# This line turns on the ValidationError; it avoids the model erroring
# when its own __init__() is called when creating form.instance.
form.instance._should_error = True
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {
'title': ['Cannot set attribute', 'This field cannot be blank.']
})
def test_setattr_raises_validation_error_non_field(self):
"""
A model ValidationError not using the dict form should put the error
message into __all__ (i.e. non-field errors) on the form.
"""
form_class = modelform_factory(model=StrictAssignmentAll, fields=['title'])
form = form_class(data={'title': 'testing setattr'}, files=None)
# This line turns on the ValidationError; it avoids the model erroring
# when its own __init__() is called when creating form.instance.
form.instance._should_error = True
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {
'__all__': ['Cannot set attribute'],
'title': ['This field cannot be blank.']
})
class ModelToDictTests(TestCase):
def test_many_to_many(self):
"""Data for a ManyToManyField is a list rather than a lazy QuerySet."""
blue = Colour.objects.create(name='blue')
red = Colour.objects.create(name='red')
item = ColourfulItem.objects.create()
item.colours.set([blue])
data = model_to_dict(item)['colours']
self.assertEqual(data, [blue])
item.colours.set([red])
# If data were a QuerySet, it would be reevaluated here and give "red"
# instead of the original value.
self.assertEqual(data, [blue])
|
83a5df5824d3eaf5470fbb5b6e6a57179a72ee0559bfa7eec60a6a2e3392e80c | import datetime
import pickle
import unittest
import uuid
from collections import namedtuple
from copy import deepcopy
from decimal import Decimal
from unittest import mock
from django.core.exceptions import FieldError
from django.db import DatabaseError, NotSupportedError, connection
from django.db.models import (
AutoField, Avg, BinaryField, BooleanField, Case, CharField, Count,
DateField, DateTimeField, DecimalField, DurationField, Exists, Expression,
ExpressionList, ExpressionWrapper, F, FloatField, Func, IntegerField, Max,
Min, Model, OrderBy, OuterRef, Q, StdDev, Subquery, Sum, TimeField,
UUIDField, Value, Variance, When,
)
from django.db.models.expressions import (
Col, Combinable, CombinedExpression, RawSQL, Ref,
)
from django.db.models.functions import (
Coalesce, Concat, Left, Length, Lower, Substr, Upper,
)
from django.db.models.sql import constants
from django.db.models.sql.datastructures import Join
from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
from django.test.utils import (
Approximate, CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.utils.functional import SimpleLazyObject
from .models import (
UUID, UUIDPK, Company, Employee, Experiment, Manager, Number,
RemoteEmployee, Result, SimulationRun, Time,
)
class BasicExpressionsTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.example_inc = Company.objects.create(
name="Example Inc.", num_employees=2300, num_chairs=5,
ceo=Employee.objects.create(firstname="Joe", lastname="Smith", salary=10)
)
cls.foobar_ltd = Company.objects.create(
name="Foobar Ltd.", num_employees=3, num_chairs=4, based_in_eu=True,
ceo=Employee.objects.create(firstname="Frank", lastname="Meyer", salary=20)
)
cls.max = Employee.objects.create(firstname='Max', lastname='Mustermann', salary=30)
cls.gmbh = Company.objects.create(name='Test GmbH', num_employees=32, num_chairs=1, ceo=cls.max)
def setUp(self):
self.company_query = Company.objects.values(
"name", "num_employees", "num_chairs"
).order_by(
"name", "num_employees", "num_chairs"
)
def test_annotate_values_aggregate(self):
companies = Company.objects.annotate(
salaries=F('ceo__salary'),
).values('num_employees', 'salaries').aggregate(
result=Sum(
F('salaries') + F('num_employees'),
output_field=IntegerField()
),
)
self.assertEqual(companies['result'], 2395)
def test_annotate_values_filter(self):
companies = Company.objects.annotate(
foo=RawSQL('%s', ['value']),
).filter(foo='value').order_by('name')
self.assertSequenceEqual(
companies,
[self.example_inc, self.foobar_ltd, self.gmbh],
)
def test_annotate_values_count(self):
companies = Company.objects.annotate(foo=RawSQL('%s', ['value']))
self.assertEqual(companies.count(), 3)
@skipUnlessDBFeature('supports_boolean_expr_in_select_clause')
def test_filtering_on_annotate_that_uses_q(self):
self.assertEqual(
Company.objects.annotate(
num_employees_check=ExpressionWrapper(Q(num_employees__gt=3), output_field=BooleanField())
).filter(num_employees_check=True).count(),
2,
)
def test_filtering_on_q_that_is_boolean(self):
self.assertEqual(
Company.objects.filter(
ExpressionWrapper(Q(num_employees__gt=3), output_field=BooleanField())
).count(),
2,
)
def test_filtering_on_rawsql_that_is_boolean(self):
self.assertEqual(
Company.objects.filter(
RawSQL('num_employees > %s', (3,), output_field=BooleanField()),
).count(),
2,
)
def test_filter_inter_attribute(self):
# We can filter on attribute relationships on same model obj, e.g.
# find companies where the number of employees is greater
# than the number of chairs.
self.assertSequenceEqual(
self.company_query.filter(num_employees__gt=F("num_chairs")), [
{
"num_chairs": 5,
"name": "Example Inc.",
"num_employees": 2300,
},
{
"num_chairs": 1,
"name": "Test GmbH",
"num_employees": 32
},
],
)
def test_update(self):
# We can set one field to have the value of another field
# Make sure we have enough chairs
self.company_query.update(num_chairs=F("num_employees"))
self.assertSequenceEqual(
self.company_query, [
{
"num_chairs": 2300,
"name": "Example Inc.",
"num_employees": 2300
},
{
"num_chairs": 3,
"name": "Foobar Ltd.",
"num_employees": 3
},
{
"num_chairs": 32,
"name": "Test GmbH",
"num_employees": 32
}
],
)
def test_arithmetic(self):
# We can perform arithmetic operations in expressions
# Make sure we have 2 spare chairs
self.company_query.update(num_chairs=F("num_employees") + 2)
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 2302,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 5,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 34,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_order_of_operations(self):
# Law of order of operations is followed
self.company_query.update(num_chairs=F('num_employees') + 2 * F('num_employees'))
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 6900,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 9,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 96,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_parenthesis_priority(self):
# Law of order of operations can be overridden by parentheses
self.company_query.update(num_chairs=(F('num_employees') + 2) * F('num_employees'))
self.assertSequenceEqual(
self.company_query, [
{
'num_chairs': 5294600,
'name': 'Example Inc.',
'num_employees': 2300
},
{
'num_chairs': 15,
'name': 'Foobar Ltd.',
'num_employees': 3
},
{
'num_chairs': 1088,
'name': 'Test GmbH',
'num_employees': 32
}
],
)
def test_update_with_fk(self):
# ForeignKey can become updated with the value of another ForeignKey.
self.assertEqual(Company.objects.update(point_of_contact=F('ceo')), 3)
self.assertQuerysetEqual(
Company.objects.all(),
['Joe Smith', 'Frank Meyer', 'Max Mustermann'],
lambda c: str(c.point_of_contact),
ordered=False
)
def test_update_with_none(self):
Number.objects.create(integer=1, float=1.0)
Number.objects.create(integer=2)
Number.objects.filter(float__isnull=False).update(float=Value(None))
self.assertQuerysetEqual(
Number.objects.all(),
[None, None],
lambda n: n.float,
ordered=False
)
def test_filter_with_join(self):
# F Expressions can also span joins
Company.objects.update(point_of_contact=F('ceo'))
c = Company.objects.first()
c.point_of_contact = Employee.objects.create(firstname="Guido", lastname="van Rossum")
c.save()
self.assertQuerysetEqual(
Company.objects.filter(ceo__firstname=F('point_of_contact__firstname')),
['Foobar Ltd.', 'Test GmbH'],
lambda c: c.name,
ordered=False
)
Company.objects.exclude(
ceo__firstname=F("point_of_contact__firstname")
).update(name="foo")
self.assertEqual(
Company.objects.exclude(
ceo__firstname=F('point_of_contact__firstname')
).get().name,
"foo",
)
msg = "Joined field references are not permitted in this query"
with self.assertRaisesMessage(FieldError, msg):
Company.objects.exclude(
ceo__firstname=F('point_of_contact__firstname')
).update(name=F('point_of_contact__lastname'))
def test_object_update(self):
# F expressions can be used to update attributes on single objects
self.gmbh.num_employees = F('num_employees') + 4
self.gmbh.save()
self.gmbh.refresh_from_db()
self.assertEqual(self.gmbh.num_employees, 36)
def test_new_object_save(self):
# We should be able to use Funcs when inserting new data
test_co = Company(name=Lower(Value('UPPER')), num_employees=32, num_chairs=1, ceo=self.max)
test_co.save()
test_co.refresh_from_db()
self.assertEqual(test_co.name, "upper")
def test_new_object_create(self):
test_co = Company.objects.create(name=Lower(Value('UPPER')), num_employees=32, num_chairs=1, ceo=self.max)
test_co.refresh_from_db()
self.assertEqual(test_co.name, "upper")
def test_object_create_with_aggregate(self):
# Aggregates are not allowed when inserting new data
msg = 'Aggregate functions are not allowed in this query (num_employees=Max(Value(1))).'
with self.assertRaisesMessage(FieldError, msg):
Company.objects.create(
name='Company', num_employees=Max(Value(1)), num_chairs=1,
ceo=Employee.objects.create(firstname="Just", lastname="Doit", salary=30),
)
def test_object_update_fk(self):
# F expressions cannot be used to update attributes which are foreign
# keys, or attributes which involve joins.
test_gmbh = Company.objects.get(pk=self.gmbh.pk)
msg = 'F(ceo)": "Company.point_of_contact" must be a "Employee" instance.'
with self.assertRaisesMessage(ValueError, msg):
test_gmbh.point_of_contact = F('ceo')
test_gmbh.point_of_contact = self.gmbh.ceo
test_gmbh.save()
test_gmbh.name = F('ceo__lastname')
msg = 'Joined field references are not permitted in this query'
with self.assertRaisesMessage(FieldError, msg):
test_gmbh.save()
def test_update_inherited_field_value(self):
msg = 'Joined field references are not permitted in this query'
with self.assertRaisesMessage(FieldError, msg):
RemoteEmployee.objects.update(adjusted_salary=F('salary') * 5)
def test_object_update_unsaved_objects(self):
# F expressions cannot be used to update attributes on objects which do
# not yet exist in the database
acme = Company(name='The Acme Widget Co.', num_employees=12, num_chairs=5, ceo=self.max)
acme.num_employees = F("num_employees") + 16
msg = (
'Failed to insert expression "Col(expressions_company, '
'expressions.Company.num_employees) + Value(16)" on '
'expressions.Company.num_employees. F() expressions can only be '
'used to update, not to insert.'
)
with self.assertRaisesMessage(ValueError, msg):
acme.save()
acme.num_employees = 12
acme.name = Lower(F('name'))
msg = (
'Failed to insert expression "Lower(Col(expressions_company, '
'expressions.Company.name))" on expressions.Company.name. F() '
'expressions can only be used to update, not to insert.'
)
with self.assertRaisesMessage(ValueError, msg):
acme.save()
def test_ticket_11722_iexact_lookup(self):
Employee.objects.create(firstname="John", lastname="Doe")
test = Employee.objects.create(firstname="Test", lastname="test")
queryset = Employee.objects.filter(firstname__iexact=F('lastname'))
self.assertSequenceEqual(queryset, [test])
def test_ticket_16731_startswith_lookup(self):
Employee.objects.create(firstname="John", lastname="Doe")
e2 = Employee.objects.create(firstname="Jack", lastname="Jackson")
e3 = Employee.objects.create(firstname="Jack", lastname="jackson")
self.assertSequenceEqual(
Employee.objects.filter(lastname__startswith=F('firstname')),
[e2, e3] if connection.features.has_case_insensitive_like else [e2]
)
qs = Employee.objects.filter(lastname__istartswith=F('firstname')).order_by('pk')
self.assertSequenceEqual(qs, [e2, e3])
def test_ticket_18375_join_reuse(self):
# Reverse multijoin F() references and the lookup target the same join.
# Pre #18375 the F() join was generated first and the lookup couldn't
# reuse that join.
qs = Employee.objects.filter(company_ceo_set__num_chairs=F('company_ceo_set__num_employees'))
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_kwarg_ordering(self):
# The next query was dict-randomization dependent - if the "gte=1"
# was seen first, then the F() will reuse the join generated by the
# gte lookup, if F() was seen first, then it generated a join the
# other lookups could not reuse.
qs = Employee.objects.filter(
company_ceo_set__num_chairs=F('company_ceo_set__num_employees'),
company_ceo_set__num_chairs__gte=1,
)
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_kwarg_ordering_2(self):
# Another similar case for F() than above. Now we have the same join
# in two filter kwargs, one in the lhs lookup, one in F. Here pre
# #18375 the amount of joins generated was random if dict
# randomization was enabled, that is the generated query dependent
# on which clause was seen first.
qs = Employee.objects.filter(
company_ceo_set__num_employees=F('pk'),
pk=F('company_ceo_set__num_employees')
)
self.assertEqual(str(qs.query).count('JOIN'), 1)
def test_ticket_18375_chained_filters(self):
# F() expressions do not reuse joins from previous filter.
qs = Employee.objects.filter(
company_ceo_set__num_employees=F('pk')
).filter(
company_ceo_set__num_employees=F('company_ceo_set__num_employees')
)
self.assertEqual(str(qs.query).count('JOIN'), 2)
def test_order_by_exists(self):
mary = Employee.objects.create(firstname='Mary', lastname='Mustermann', salary=20)
mustermanns_by_seniority = Employee.objects.filter(lastname='Mustermann').order_by(
# Order by whether the employee is the CEO of a company
Exists(Company.objects.filter(ceo=OuterRef('pk'))).desc()
)
self.assertSequenceEqual(mustermanns_by_seniority, [self.max, mary])
def test_order_by_multiline_sql(self):
raw_order_by = (
RawSQL('''
CASE WHEN num_employees > 1000
THEN num_chairs
ELSE 0 END
''', []).desc(),
RawSQL('''
CASE WHEN num_chairs > 1
THEN 1
ELSE 0 END
''', []).asc()
)
for qs in (
Company.objects.all(),
Company.objects.distinct(),
):
with self.subTest(qs=qs):
self.assertSequenceEqual(
qs.order_by(*raw_order_by),
[self.example_inc, self.gmbh, self.foobar_ltd],
)
def test_outerref(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
msg = (
'This queryset contains a reference to an outer query and may only '
'be used in a subquery.'
)
with self.assertRaisesMessage(ValueError, msg):
inner.exists()
outer = Employee.objects.annotate(is_point_of_contact=Exists(inner))
self.assertIs(outer.exists(), True)
def test_exist_single_field_output_field(self):
queryset = Company.objects.values('pk')
self.assertIsInstance(Exists(queryset).output_field, BooleanField)
def test_subquery(self):
Company.objects.filter(name='Example Inc.').update(
point_of_contact=Employee.objects.get(firstname='Joe', lastname='Smith'),
ceo=self.max,
)
Employee.objects.create(firstname='Bob', lastname='Brown', salary=40)
qs = Employee.objects.annotate(
is_point_of_contact=Exists(Company.objects.filter(point_of_contact=OuterRef('pk'))),
is_not_point_of_contact=~Exists(Company.objects.filter(point_of_contact=OuterRef('pk'))),
is_ceo_of_small_company=Exists(Company.objects.filter(num_employees__lt=200, ceo=OuterRef('pk'))),
is_ceo_small_2=~~Exists(Company.objects.filter(num_employees__lt=200, ceo=OuterRef('pk'))),
largest_company=Subquery(Company.objects.order_by('-num_employees').filter(
Q(ceo=OuterRef('pk')) | Q(point_of_contact=OuterRef('pk'))
).values('name')[:1], output_field=CharField())
).values(
'firstname',
'is_point_of_contact',
'is_not_point_of_contact',
'is_ceo_of_small_company',
'is_ceo_small_2',
'largest_company',
).order_by('firstname')
results = list(qs)
# Could use Coalesce(subq, Value('')) instead except for the bug in
# cx_Oracle mentioned in #23843.
bob = results[0]
if bob['largest_company'] == '' and connection.features.interprets_empty_strings_as_nulls:
bob['largest_company'] = None
self.assertEqual(results, [
{
'firstname': 'Bob',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': False,
'is_ceo_small_2': False,
'largest_company': None,
},
{
'firstname': 'Frank',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': True,
'is_ceo_small_2': True,
'largest_company': 'Foobar Ltd.',
},
{
'firstname': 'Joe',
'is_point_of_contact': True,
'is_not_point_of_contact': False,
'is_ceo_of_small_company': False,
'is_ceo_small_2': False,
'largest_company': 'Example Inc.',
},
{
'firstname': 'Max',
'is_point_of_contact': False,
'is_not_point_of_contact': True,
'is_ceo_of_small_company': True,
'is_ceo_small_2': True,
'largest_company': 'Example Inc.'
}
])
# A less elegant way to write the same query: this uses a LEFT OUTER
# JOIN and an IS NULL, inside a WHERE NOT IN which is probably less
# efficient than EXISTS.
self.assertCountEqual(
qs.filter(is_point_of_contact=True).values('pk'),
Employee.objects.exclude(company_point_of_contact_set=None).values('pk')
)
def test_subquery_eq(self):
qs = Employee.objects.annotate(
is_ceo=Exists(Company.objects.filter(ceo=OuterRef('pk'))),
is_point_of_contact=Exists(
Company.objects.filter(point_of_contact=OuterRef('pk')),
),
small_company=Exists(
queryset=Company.objects.filter(num_employees__lt=200),
),
).filter(is_ceo=True, is_point_of_contact=False, small_company=True)
self.assertNotEqual(
qs.query.annotations['is_ceo'],
qs.query.annotations['is_point_of_contact'],
)
self.assertNotEqual(
qs.query.annotations['is_ceo'],
qs.query.annotations['small_company'],
)
def test_in_subquery(self):
# This is a contrived test (and you really wouldn't write this query),
# but it is a succinct way to test the __in=Subquery() construct.
small_companies = Company.objects.filter(num_employees__lt=200).values('pk')
subquery_test = Company.objects.filter(pk__in=Subquery(small_companies))
self.assertCountEqual(subquery_test, [self.foobar_ltd, self.gmbh])
subquery_test2 = Company.objects.filter(pk=Subquery(small_companies.filter(num_employees=3)))
self.assertCountEqual(subquery_test2, [self.foobar_ltd])
def test_uuid_pk_subquery(self):
u = UUIDPK.objects.create()
UUID.objects.create(uuid_fk=u)
qs = UUIDPK.objects.filter(id__in=Subquery(UUID.objects.values('uuid_fk__id')))
self.assertCountEqual(qs, [u])
def test_nested_subquery(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
outer = Employee.objects.annotate(is_point_of_contact=Exists(inner))
contrived = Employee.objects.annotate(
is_point_of_contact=Subquery(
outer.filter(pk=OuterRef('pk')).values('is_point_of_contact'),
output_field=BooleanField(),
),
)
self.assertCountEqual(contrived.values_list(), outer.values_list())
def test_nested_subquery_join_outer_ref(self):
inner = Employee.objects.filter(pk=OuterRef('ceo__pk')).values('pk')
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
ceo__in=inner,
ceo__pk=OuterRef('pk'),
).values('pk'),
),
)
self.assertSequenceEqual(
qs.values_list('ceo_company', flat=True),
[self.example_inc.pk, self.foobar_ltd.pk, self.gmbh.pk],
)
def test_nested_subquery_outer_ref_2(self):
first = Time.objects.create(time='09:00')
second = Time.objects.create(time='17:00')
third = Time.objects.create(time='21:00')
SimulationRun.objects.bulk_create([
SimulationRun(start=first, end=second, midpoint='12:00'),
SimulationRun(start=first, end=third, midpoint='15:00'),
SimulationRun(start=second, end=first, midpoint='00:00'),
])
inner = Time.objects.filter(time=OuterRef(OuterRef('time')), pk=OuterRef('start')).values('time')
middle = SimulationRun.objects.annotate(other=Subquery(inner)).values('other')[:1]
outer = Time.objects.annotate(other=Subquery(middle, output_field=TimeField()))
# This is a contrived example. It exercises the double OuterRef form.
self.assertCountEqual(outer, [first, second, third])
def test_nested_subquery_outer_ref_with_autofield(self):
first = Time.objects.create(time='09:00')
second = Time.objects.create(time='17:00')
SimulationRun.objects.create(start=first, end=second, midpoint='12:00')
inner = SimulationRun.objects.filter(start=OuterRef(OuterRef('pk'))).values('start')
middle = Time.objects.annotate(other=Subquery(inner)).values('other')[:1]
outer = Time.objects.annotate(other=Subquery(middle, output_field=IntegerField()))
# This exercises the double OuterRef form with AutoField as pk.
self.assertCountEqual(outer, [first, second])
def test_annotations_within_subquery(self):
Company.objects.filter(num_employees__lt=50).update(ceo=Employee.objects.get(firstname='Frank'))
inner = Company.objects.filter(
ceo=OuterRef('pk')
).values('ceo').annotate(total_employees=Sum('num_employees')).values('total_employees')
outer = Employee.objects.annotate(total_employees=Subquery(inner)).filter(salary__lte=Subquery(inner))
self.assertSequenceEqual(
outer.order_by('-total_employees').values('salary', 'total_employees'),
[{'salary': 10, 'total_employees': 2300}, {'salary': 20, 'total_employees': 35}],
)
def test_subquery_references_joined_table_twice(self):
inner = Company.objects.filter(
num_chairs__gte=OuterRef('ceo__salary'),
num_employees__gte=OuterRef('point_of_contact__salary'),
)
# Another contrived example (there is no need to have a subquery here)
outer = Company.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertFalse(outer.exists())
def test_subquery_filter_by_aggregate(self):
Number.objects.create(integer=1000, float=1.2)
Employee.objects.create(salary=1000)
qs = Number.objects.annotate(
min_valuable_count=Subquery(
Employee.objects.filter(
salary=OuterRef('integer'),
).annotate(cnt=Count('salary')).filter(cnt__gt=0).values('cnt')[:1]
),
)
self.assertEqual(qs.get().float, 1.2)
def test_subquery_filter_by_lazy(self):
self.max.manager = Manager.objects.create(name='Manager')
self.max.save()
max_manager = SimpleLazyObject(
lambda: Manager.objects.get(pk=self.max.manager.pk)
)
qs = Company.objects.annotate(
ceo_manager=Subquery(
Employee.objects.filter(
lastname=OuterRef('ceo__lastname'),
).values('manager'),
),
).filter(ceo_manager=max_manager)
self.assertEqual(qs.get(), self.gmbh)
def test_aggregate_subquery_annotation(self):
with self.assertNumQueries(1) as ctx:
aggregate = Company.objects.annotate(
ceo_salary=Subquery(
Employee.objects.filter(
id=OuterRef('ceo_id'),
).values('salary')
),
).aggregate(
ceo_salary_gt_20=Count('pk', filter=Q(ceo_salary__gt=20)),
)
self.assertEqual(aggregate, {'ceo_salary_gt_20': 1})
# Aggregation over a subquery annotation doesn't annotate the subquery
# twice in the inner query.
sql = ctx.captured_queries[0]['sql']
self.assertLessEqual(sql.count('SELECT'), 3)
# GROUP BY isn't required to aggregate over a query that doesn't
# contain nested aggregates.
self.assertNotIn('GROUP BY', sql)
@skipUnlessDBFeature('supports_over_clause')
def test_aggregate_rawsql_annotation(self):
with self.assertNumQueries(1) as ctx:
aggregate = Company.objects.annotate(
salary=RawSQL('SUM(num_chairs) OVER (ORDER BY num_employees)', []),
).aggregate(
count=Count('pk'),
)
self.assertEqual(aggregate, {'count': 3})
sql = ctx.captured_queries[0]['sql']
self.assertNotIn('GROUP BY', sql)
def test_explicit_output_field(self):
class FuncA(Func):
output_field = CharField()
class FuncB(Func):
pass
expr = FuncB(FuncA())
self.assertEqual(expr.output_field, FuncA.output_field)
def test_outerref_mixed_case_table_name(self):
inner = Result.objects.filter(result_time__gte=OuterRef('experiment__assigned'))
outer = Result.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertFalse(outer.exists())
def test_outerref_with_operator(self):
inner = Company.objects.filter(num_employees=OuterRef('ceo__salary') + 2)
outer = Company.objects.filter(pk__in=Subquery(inner.values('pk')))
self.assertEqual(outer.get().name, 'Test GmbH')
def test_nested_outerref_with_function(self):
self.gmbh.point_of_contact = Employee.objects.get(lastname='Meyer')
self.gmbh.save()
inner = Employee.objects.filter(
lastname__startswith=Left(OuterRef(OuterRef('lastname')), 1),
)
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
point_of_contact__in=inner,
ceo__pk=OuterRef('pk'),
).values('name'),
),
).filter(ceo_company__isnull=False)
self.assertEqual(qs.get().ceo_company, 'Test GmbH')
def test_annotation_with_outerref(self):
gmbh_salary = Company.objects.annotate(
max_ceo_salary_raise=Subquery(
Company.objects.annotate(
salary_raise=OuterRef('num_employees') + F('num_employees'),
).order_by('-salary_raise').values('salary_raise')[:1],
output_field=IntegerField(),
),
).get(pk=self.gmbh.pk)
self.assertEqual(gmbh_salary.max_ceo_salary_raise, 2332)
def test_annotation_with_nested_outerref(self):
self.gmbh.point_of_contact = Employee.objects.get(lastname='Meyer')
self.gmbh.save()
inner = Employee.objects.annotate(
outer_lastname=OuterRef(OuterRef('lastname')),
).filter(lastname__startswith=Left('outer_lastname', 1))
qs = Employee.objects.annotate(
ceo_company=Subquery(
Company.objects.filter(
point_of_contact__in=inner,
ceo__pk=OuterRef('pk'),
).values('name'),
),
).filter(ceo_company__isnull=False)
self.assertEqual(qs.get().ceo_company, 'Test GmbH')
def test_pickle_expression(self):
expr = Value(1)
expr.convert_value # populate cached property
self.assertEqual(pickle.loads(pickle.dumps(expr)), expr)
def test_incorrect_field_in_F_expression(self):
with self.assertRaisesMessage(FieldError, "Cannot resolve keyword 'nope' into field."):
list(Employee.objects.filter(firstname=F('nope')))
def test_incorrect_joined_field_in_F_expression(self):
with self.assertRaisesMessage(FieldError, "Cannot resolve keyword 'nope' into field."):
list(Company.objects.filter(ceo__pk=F('point_of_contact__nope')))
def test_exists_in_filter(self):
inner = Company.objects.filter(ceo=OuterRef('pk')).values('pk')
qs1 = Employee.objects.filter(Exists(inner))
qs2 = Employee.objects.annotate(found=Exists(inner)).filter(found=True)
self.assertCountEqual(qs1, qs2)
self.assertFalse(Employee.objects.exclude(Exists(inner)).exists())
self.assertCountEqual(qs2, Employee.objects.exclude(~Exists(inner)))
def test_subquery_in_filter(self):
inner = Company.objects.filter(ceo=OuterRef('pk')).values('based_in_eu')
self.assertSequenceEqual(
Employee.objects.filter(Subquery(inner)),
[self.foobar_ltd.ceo],
)
def test_subquery_group_by_outerref_in_filter(self):
inner = Company.objects.annotate(
employee=OuterRef('pk'),
).values('employee').annotate(
min_num_chairs=Min('num_chairs'),
).values('ceo')
self.assertIs(Employee.objects.filter(pk__in=Subquery(inner)).exists(), True)
def test_case_in_filter_if_boolean_output_field(self):
is_ceo = Company.objects.filter(ceo=OuterRef('pk'))
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
qs = Employee.objects.filter(
Case(
When(Exists(is_ceo), then=True),
When(Exists(is_poc), then=True),
default=False,
output_field=BooleanField(),
),
)
self.assertCountEqual(qs, [self.example_inc.ceo, self.foobar_ltd.ceo, self.max])
def test_boolean_expression_combined(self):
is_ceo = Company.objects.filter(ceo=OuterRef('pk'))
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) | Exists(is_poc)),
[self.example_inc.ceo, self.foobar_ltd.ceo, self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) & Exists(is_poc)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_ceo) & Q(salary__gte=30)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Exists(is_poc) | Q(salary__lt=15)),
[self.example_inc.ceo, self.max],
)
self.assertCountEqual(
Employee.objects.filter(Q(salary__gte=30) & Exists(is_ceo)),
[self.max],
)
self.assertCountEqual(
Employee.objects.filter(Q(salary__lt=15) | Exists(is_poc)),
[self.example_inc.ceo, self.max],
)
def test_boolean_expression_combined_with_empty_Q(self):
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
tests = [
Exists(is_poc) & Q(),
Q() & Exists(is_poc),
Exists(is_poc) | Q(),
Q() | Exists(is_poc),
Q(Exists(is_poc)) & Q(),
Q() & Q(Exists(is_poc)),
Q(Exists(is_poc)) | Q(),
Q() | Q(Exists(is_poc)),
]
for conditions in tests:
with self.subTest(conditions):
self.assertCountEqual(Employee.objects.filter(conditions), [self.max])
def test_boolean_expression_in_Q(self):
is_poc = Company.objects.filter(point_of_contact=OuterRef('pk'))
self.gmbh.point_of_contact = self.max
self.gmbh.save()
self.assertCountEqual(Employee.objects.filter(Q(Exists(is_poc))), [self.max])
class IterableLookupInnerExpressionsTests(TestCase):
@classmethod
def setUpTestData(cls):
ceo = Employee.objects.create(firstname='Just', lastname='Doit', salary=30)
# MySQL requires that the values calculated for expressions don't pass
# outside of the field's range, so it's inconvenient to use the values
# in the more general tests.
cls.c5020 = Company.objects.create(name='5020 Ltd', num_employees=50, num_chairs=20, ceo=ceo)
cls.c5040 = Company.objects.create(name='5040 Ltd', num_employees=50, num_chairs=40, ceo=ceo)
cls.c5050 = Company.objects.create(name='5050 Ltd', num_employees=50, num_chairs=50, ceo=ceo)
cls.c5060 = Company.objects.create(name='5060 Ltd', num_employees=50, num_chairs=60, ceo=ceo)
cls.c99300 = Company.objects.create(name='99300 Ltd', num_employees=99, num_chairs=300, ceo=ceo)
def test_in_lookup_allows_F_expressions_and_expressions_for_integers(self):
# __in lookups can use F() expressions for integers.
queryset = Company.objects.filter(num_employees__in=([F('num_chairs') - 10]))
self.assertSequenceEqual(queryset, [self.c5060])
self.assertCountEqual(
Company.objects.filter(num_employees__in=([F('num_chairs') - 10, F('num_chairs') + 10])),
[self.c5040, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(
num_employees__in=([F('num_chairs') - 10, F('num_chairs'), F('num_chairs') + 10])
),
[self.c5040, self.c5050, self.c5060],
)
def test_expressions_in_lookups_join_choice(self):
midpoint = datetime.time(13, 0)
t1 = Time.objects.create(time=datetime.time(12, 0))
t2 = Time.objects.create(time=datetime.time(14, 0))
s1 = SimulationRun.objects.create(start=t1, end=t2, midpoint=midpoint)
SimulationRun.objects.create(start=t1, end=None, midpoint=midpoint)
SimulationRun.objects.create(start=None, end=t2, midpoint=midpoint)
SimulationRun.objects.create(start=None, end=None, midpoint=midpoint)
queryset = SimulationRun.objects.filter(midpoint__range=[F('start__time'), F('end__time')])
self.assertSequenceEqual(queryset, [s1])
for alias in queryset.query.alias_map.values():
if isinstance(alias, Join):
self.assertEqual(alias.join_type, constants.INNER)
queryset = SimulationRun.objects.exclude(midpoint__range=[F('start__time'), F('end__time')])
self.assertQuerysetEqual(queryset, [], ordered=False)
for alias in queryset.query.alias_map.values():
if isinstance(alias, Join):
self.assertEqual(alias.join_type, constants.LOUTER)
def test_range_lookup_allows_F_expressions_and_expressions_for_integers(self):
# Range lookups can use F() expressions for integers.
Company.objects.filter(num_employees__exact=F("num_chairs"))
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs'), 100)),
[self.c5020, self.c5040, self.c5050],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs') - 10, F('num_chairs') + 10)),
[self.c5040, self.c5050, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(F('num_chairs') - 10, 100)),
[self.c5020, self.c5040, self.c5050, self.c5060],
)
self.assertCountEqual(
Company.objects.filter(num_employees__range=(1, 100)),
[self.c5020, self.c5040, self.c5050, self.c5060, self.c99300],
)
def test_range_lookup_namedtuple(self):
EmployeeRange = namedtuple('EmployeeRange', ['minimum', 'maximum'])
qs = Company.objects.filter(
num_employees__range=EmployeeRange(minimum=51, maximum=100),
)
self.assertSequenceEqual(qs, [self.c99300])
@unittest.skipUnless(connection.vendor == 'sqlite',
"This defensive test only works on databases that don't validate parameter types")
def test_complex_expressions_do_not_introduce_sql_injection_via_untrusted_string_inclusion(self):
"""
This tests that SQL injection isn't possible using compilation of
expressions in iterable filters, as their compilation happens before
the main query compilation. It's limited to SQLite, as PostgreSQL,
Oracle and other vendors have defense in depth against this by type
checking. Testing against SQLite (the most permissive of the built-in
databases) demonstrates that the problem doesn't exist while keeping
the test simple.
"""
queryset = Company.objects.filter(name__in=[F('num_chairs') + '1)) OR ((1==1'])
self.assertQuerysetEqual(queryset, [], ordered=False)
def test_in_lookup_allows_F_expressions_and_expressions_for_datetimes(self):
start = datetime.datetime(2016, 2, 3, 15, 0, 0)
end = datetime.datetime(2016, 2, 5, 15, 0, 0)
experiment_1 = Experiment.objects.create(
name='Integrity testing',
assigned=start.date(),
start=start,
end=end,
completed=end.date(),
estimated_time=end - start,
)
experiment_2 = Experiment.objects.create(
name='Taste testing',
assigned=start.date(),
start=start,
end=end,
completed=end.date(),
estimated_time=end - start,
)
r1 = Result.objects.create(
experiment=experiment_1,
result_time=datetime.datetime(2016, 2, 4, 15, 0, 0),
)
Result.objects.create(
experiment=experiment_1,
result_time=datetime.datetime(2016, 3, 10, 2, 0, 0),
)
Result.objects.create(
experiment=experiment_2,
result_time=datetime.datetime(2016, 1, 8, 5, 0, 0),
)
within_experiment_time = [F('experiment__start'), F('experiment__end')]
queryset = Result.objects.filter(result_time__range=within_experiment_time)
self.assertSequenceEqual(queryset, [r1])
class FTests(SimpleTestCase):
def test_deepcopy(self):
f = F("foo")
g = deepcopy(f)
self.assertEqual(f.name, g.name)
def test_deconstruct(self):
f = F('name')
path, args, kwargs = f.deconstruct()
self.assertEqual(path, 'django.db.models.F')
self.assertEqual(args, (f.name,))
self.assertEqual(kwargs, {})
def test_equal(self):
f = F('name')
same_f = F('name')
other_f = F('username')
self.assertEqual(f, same_f)
self.assertNotEqual(f, other_f)
def test_hash(self):
d = {F('name'): 'Bob'}
self.assertIn(F('name'), d)
self.assertEqual(d[F('name')], 'Bob')
def test_not_equal_Value(self):
f = F('name')
value = Value('name')
self.assertNotEqual(f, value)
self.assertNotEqual(value, f)
class ExpressionsTests(TestCase):
def test_F_reuse(self):
f = F('id')
n = Number.objects.create(integer=-1)
c = Company.objects.create(
name="Example Inc.", num_employees=2300, num_chairs=5,
ceo=Employee.objects.create(firstname="Joe", lastname="Smith")
)
c_qs = Company.objects.filter(id=f)
self.assertEqual(c_qs.get(), c)
# Reuse the same F-object for another queryset
n_qs = Number.objects.filter(id=f)
self.assertEqual(n_qs.get(), n)
# The original query still works correctly
self.assertEqual(c_qs.get(), c)
def test_patterns_escape(self):
r"""
Special characters (e.g. %, _ and \) stored in database are
properly escaped when using a pattern lookup with an expression
refs #16731
"""
Employee.objects.bulk_create([
Employee(firstname="Johnny", lastname="%John"),
Employee(firstname="Jean-Claude", lastname="Claud_"),
Employee(firstname="Jean-Claude", lastname="Claude%"),
Employee(firstname="Johnny", lastname="Joh\\n"),
Employee(firstname="Johnny", lastname="_ohn"),
])
claude = Employee.objects.create(firstname='Jean-Claude', lastname='Claude')
john = Employee.objects.create(firstname='Johnny', lastname='John')
john_sign = Employee.objects.create(firstname='%Joh\\nny', lastname='%Joh\\n')
self.assertCountEqual(
Employee.objects.filter(firstname__contains=F('lastname')),
[john_sign, john, claude],
)
self.assertCountEqual(
Employee.objects.filter(firstname__startswith=F('lastname')),
[john_sign, john],
)
self.assertSequenceEqual(
Employee.objects.filter(firstname__endswith=F('lastname')),
[claude],
)
def test_insensitive_patterns_escape(self):
r"""
Special characters (e.g. %, _ and \) stored in database are
properly escaped when using a case insensitive pattern lookup with an
expression -- refs #16731
"""
Employee.objects.bulk_create([
Employee(firstname="Johnny", lastname="%john"),
Employee(firstname="Jean-Claude", lastname="claud_"),
Employee(firstname="Jean-Claude", lastname="claude%"),
Employee(firstname="Johnny", lastname="joh\\n"),
Employee(firstname="Johnny", lastname="_ohn"),
])
claude = Employee.objects.create(firstname='Jean-Claude', lastname='claude')
john = Employee.objects.create(firstname='Johnny', lastname='john')
john_sign = Employee.objects.create(firstname='%Joh\\nny', lastname='%joh\\n')
self.assertCountEqual(
Employee.objects.filter(firstname__icontains=F('lastname')),
[john_sign, john, claude],
)
self.assertCountEqual(
Employee.objects.filter(firstname__istartswith=F('lastname')),
[john_sign, john],
)
self.assertSequenceEqual(
Employee.objects.filter(firstname__iendswith=F('lastname')),
[claude],
)
@isolate_apps('expressions')
class SimpleExpressionTests(SimpleTestCase):
def test_equal(self):
self.assertEqual(Expression(), Expression())
self.assertEqual(
Expression(IntegerField()),
Expression(output_field=IntegerField())
)
self.assertEqual(Expression(IntegerField()), mock.ANY)
self.assertNotEqual(
Expression(IntegerField()),
Expression(CharField())
)
class TestModel(Model):
field = IntegerField()
other_field = IntegerField()
self.assertNotEqual(
Expression(TestModel._meta.get_field('field')),
Expression(TestModel._meta.get_field('other_field')),
)
def test_hash(self):
self.assertEqual(hash(Expression()), hash(Expression()))
self.assertEqual(
hash(Expression(IntegerField())),
hash(Expression(output_field=IntegerField()))
)
self.assertNotEqual(
hash(Expression(IntegerField())),
hash(Expression(CharField())),
)
class TestModel(Model):
field = IntegerField()
other_field = IntegerField()
self.assertNotEqual(
hash(Expression(TestModel._meta.get_field('field'))),
hash(Expression(TestModel._meta.get_field('other_field'))),
)
class ExpressionsNumericTests(TestCase):
@classmethod
def setUpTestData(cls):
Number(integer=-1).save()
Number(integer=42).save()
Number(integer=1337).save()
Number.objects.update(float=F('integer'))
def test_fill_with_value_from_same_object(self):
"""
We can fill a value in all objects with an other value of the
same object.
"""
self.assertQuerysetEqual(
Number.objects.all(),
[(-1, -1), (42, 42), (1337, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_increment_value(self):
"""
We can increment a value of all objects in a query set.
"""
self.assertEqual(Number.objects.filter(integer__gt=0).update(integer=F('integer') + 1), 2)
self.assertQuerysetEqual(
Number.objects.all(),
[(-1, -1), (43, 42), (1338, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_filter_not_equals_other_field(self):
"""
We can filter for objects, where a value is not equals the value
of an other field.
"""
self.assertEqual(Number.objects.filter(integer__gt=0).update(integer=F('integer') + 1), 2)
self.assertQuerysetEqual(
Number.objects.exclude(float=F('integer')),
[(43, 42), (1338, 1337)],
lambda n: (n.integer, round(n.float)),
ordered=False
)
def test_filter_decimal_expression(self):
obj = Number.objects.create(integer=0, float=1, decimal_value=Decimal('1'))
qs = Number.objects.annotate(
x=ExpressionWrapper(Value(1), output_field=DecimalField()),
).filter(Q(x=1, integer=0) & Q(x=Decimal('1')))
self.assertSequenceEqual(qs, [obj])
def test_complex_expressions(self):
"""
Complex expressions of different connection types are possible.
"""
n = Number.objects.create(integer=10, float=123.45)
self.assertEqual(Number.objects.filter(pk=n.pk).update(
float=F('integer') + F('float') * 2), 1)
self.assertEqual(Number.objects.get(pk=n.pk).integer, 10)
self.assertEqual(Number.objects.get(pk=n.pk).float, Approximate(256.900, places=3))
def test_decimal_expression(self):
n = Number.objects.create(integer=1, decimal_value=Decimal('0.5'))
n.decimal_value = F('decimal_value') - Decimal('0.4')
n.save()
n.refresh_from_db()
self.assertEqual(n.decimal_value, Decimal('0.1'))
class ExpressionOperatorTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.n = Number.objects.create(integer=42, float=15.5)
cls.n1 = Number.objects.create(integer=-42, float=-15.5)
def test_lefthand_addition(self):
# LH Addition of floats and integers
Number.objects.filter(pk=self.n.pk).update(
integer=F('integer') + 15,
float=F('float') + 42.7
)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
def test_lefthand_subtraction(self):
# LH Subtraction of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') - 15, float=F('float') - 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(-27.200, places=3))
def test_lefthand_multiplication(self):
# Multiplication of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') * 15, float=F('float') * 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
def test_lefthand_division(self):
# LH Division of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') / 2, float=F('float') / 42.7)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 21)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(0.363, places=3))
def test_lefthand_modulo(self):
# LH Modulo arithmetic on integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') % 20)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 2)
def test_lefthand_bitwise_and(self):
# LH Bitwise ands on integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer').bitand(56))
Number.objects.filter(pk=self.n1.pk).update(integer=F('integer').bitand(-56))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 40)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -64)
def test_lefthand_bitwise_left_shift_operator(self):
Number.objects.update(integer=F('integer').bitleftshift(2))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 168)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -168)
def test_lefthand_bitwise_right_shift_operator(self):
Number.objects.update(integer=F('integer').bitrightshift(2))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 10)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -11)
def test_lefthand_bitwise_or(self):
# LH Bitwise or on integers
Number.objects.update(integer=F('integer').bitor(48))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 58)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -10)
def test_lefthand_transformed_field_bitwise_or(self):
Employee.objects.create(firstname='Max', lastname='Mustermann')
with register_lookup(CharField, Length):
qs = Employee.objects.annotate(bitor=F('lastname__length').bitor(48))
self.assertEqual(qs.get().bitor, 58)
def test_lefthand_power(self):
# LH Power arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') ** 2, float=F('float') ** 1.5)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 1764)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(61.02, places=2))
def test_lefthand_bitwise_xor(self):
Number.objects.update(integer=F('integer').bitxor(48))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 26)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -26)
def test_lefthand_bitwise_xor_null(self):
employee = Employee.objects.create(firstname='John', lastname='Doe')
Employee.objects.update(salary=F('salary').bitxor(48))
employee.refresh_from_db()
self.assertIsNone(employee.salary)
@unittest.skipUnless(connection.vendor == 'oracle', "Oracle doesn't support bitwise XOR.")
def test_lefthand_bitwise_xor_not_supported(self):
msg = 'Bitwise XOR is not supported in Oracle.'
with self.assertRaisesMessage(NotSupportedError, msg):
Number.objects.update(integer=F('integer').bitxor(48))
def test_right_hand_addition(self):
# Right hand operators
Number.objects.filter(pk=self.n.pk).update(integer=15 + F('integer'), float=42.7 + F('float'))
# RH Addition of floats and integers
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
def test_right_hand_subtraction(self):
Number.objects.filter(pk=self.n.pk).update(integer=15 - F('integer'), float=42.7 - F('float'))
# RH Subtraction of floats and integers
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, -27)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(27.200, places=3))
def test_right_hand_multiplication(self):
# RH Multiplication of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=15 * F('integer'), float=42.7 * F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
def test_right_hand_division(self):
# RH Division of floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=640 / F('integer'), float=42.7 / F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 15)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(2.755, places=3))
def test_right_hand_modulo(self):
# RH Modulo arithmetic on integers
Number.objects.filter(pk=self.n.pk).update(integer=69 % F('integer'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
def test_righthand_power(self):
# RH Power arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=2 ** F('integer'), float=1.5 ** F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 4398046511104)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(536.308, places=3))
class FTimeDeltaTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.sday = sday = datetime.date(2010, 6, 25)
cls.stime = stime = datetime.datetime(2010, 6, 25, 12, 15, 30, 747000)
midnight = datetime.time(0)
delta0 = datetime.timedelta(0)
delta1 = datetime.timedelta(microseconds=253000)
delta2 = datetime.timedelta(seconds=44)
delta3 = datetime.timedelta(hours=21, minutes=8)
delta4 = datetime.timedelta(days=10)
delta5 = datetime.timedelta(days=90)
# Test data is set so that deltas and delays will be
# strictly increasing.
cls.deltas = []
cls.delays = []
cls.days_long = []
# e0: started same day as assigned, zero duration
end = stime + delta0
cls.e0 = Experiment.objects.create(
name='e0', assigned=sday, start=stime, end=end,
completed=end.date(), estimated_time=delta0,
)
cls.deltas.append(delta0)
cls.delays.append(cls.e0.start - datetime.datetime.combine(cls.e0.assigned, midnight))
cls.days_long.append(cls.e0.completed - cls.e0.assigned)
# e1: started one day after assigned, tiny duration, data
# set so that end time has no fractional seconds, which
# tests an edge case on sqlite.
delay = datetime.timedelta(1)
end = stime + delay + delta1
e1 = Experiment.objects.create(
name='e1', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta1,
)
cls.deltas.append(delta1)
cls.delays.append(e1.start - datetime.datetime.combine(e1.assigned, midnight))
cls.days_long.append(e1.completed - e1.assigned)
# e2: started three days after assigned, small duration
end = stime + delta2
e2 = Experiment.objects.create(
name='e2', assigned=sday - datetime.timedelta(3), start=stime,
end=end, completed=end.date(), estimated_time=datetime.timedelta(hours=1),
)
cls.deltas.append(delta2)
cls.delays.append(e2.start - datetime.datetime.combine(e2.assigned, midnight))
cls.days_long.append(e2.completed - e2.assigned)
# e3: started four days after assigned, medium duration
delay = datetime.timedelta(4)
end = stime + delay + delta3
e3 = Experiment.objects.create(
name='e3', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta3,
)
cls.deltas.append(delta3)
cls.delays.append(e3.start - datetime.datetime.combine(e3.assigned, midnight))
cls.days_long.append(e3.completed - e3.assigned)
# e4: started 10 days after assignment, long duration
end = stime + delta4
e4 = Experiment.objects.create(
name='e4', assigned=sday - datetime.timedelta(10), start=stime,
end=end, completed=end.date(), estimated_time=delta4 - datetime.timedelta(1),
)
cls.deltas.append(delta4)
cls.delays.append(e4.start - datetime.datetime.combine(e4.assigned, midnight))
cls.days_long.append(e4.completed - e4.assigned)
# e5: started a month after assignment, very long duration
delay = datetime.timedelta(30)
end = stime + delay + delta5
e5 = Experiment.objects.create(
name='e5', assigned=sday, start=stime + delay, end=end,
completed=end.date(), estimated_time=delta5,
)
cls.deltas.append(delta5)
cls.delays.append(e5.start - datetime.datetime.combine(e5.assigned, midnight))
cls.days_long.append(e5.completed - e5.assigned)
cls.expnames = [e.name for e in Experiment.objects.all()]
def test_multiple_query_compilation(self):
# Ticket #21643
queryset = Experiment.objects.filter(end__lt=F('start') + datetime.timedelta(hours=1))
q1 = str(queryset.query)
q2 = str(queryset.query)
self.assertEqual(q1, q2)
def test_query_clone(self):
# Ticket #21643 - Crash when compiling query more than once
qs = Experiment.objects.filter(end__lt=F('start') + datetime.timedelta(hours=1))
qs2 = qs.all()
list(qs)
list(qs2)
# Intentionally no assert
def test_delta_add(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.filter(end__lt=F('start') + delta)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(end__lt=delta + F('start'))]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(end__lte=F('start') + delta)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_delta_subtract(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.filter(start__gt=F('end') - delta)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(start__gte=F('end') - delta)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_exclude(self):
for i, delta in enumerate(self.deltas):
test_set = [e.name for e in Experiment.objects.exclude(end__lt=F('start') + delta)]
self.assertEqual(test_set, self.expnames[i:])
test_set = [e.name for e in Experiment.objects.exclude(end__lte=F('start') + delta)]
self.assertEqual(test_set, self.expnames[i + 1:])
def test_date_comparison(self):
for i, days in enumerate(self.days_long):
test_set = [e.name for e in Experiment.objects.filter(completed__lt=F('assigned') + days)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(completed__lte=F('assigned') + days)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_mixed_comparisons1(self):
for i, delay in enumerate(self.delays):
test_set = [e.name for e in Experiment.objects.filter(assigned__gt=F('start') - delay)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [e.name for e in Experiment.objects.filter(assigned__gte=F('start') - delay)]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_mixed_comparisons2(self):
for i, delay in enumerate(self.delays):
delay = datetime.timedelta(delay.days)
test_set = [e.name for e in Experiment.objects.filter(start__lt=F('assigned') + delay)]
self.assertEqual(test_set, self.expnames[:i])
test_set = [
e.name for e in Experiment.objects.filter(start__lte=F('assigned') + delay + datetime.timedelta(1))
]
self.assertEqual(test_set, self.expnames[:i + 1])
def test_delta_update(self):
for delta in self.deltas:
exps = Experiment.objects.all()
expected_durations = [e.duration() for e in exps]
expected_starts = [e.start + delta for e in exps]
expected_ends = [e.end + delta for e in exps]
Experiment.objects.update(start=F('start') + delta, end=F('end') + delta)
exps = Experiment.objects.all()
new_starts = [e.start for e in exps]
new_ends = [e.end for e in exps]
new_durations = [e.duration() for e in exps]
self.assertEqual(expected_starts, new_starts)
self.assertEqual(expected_ends, new_ends)
self.assertEqual(expected_durations, new_durations)
def test_invalid_operator(self):
with self.assertRaises(DatabaseError):
list(Experiment.objects.filter(start=F('start') * datetime.timedelta(0)))
def test_durationfield_add(self):
zeros = [e.name for e in Experiment.objects.filter(start=F('start') + F('estimated_time'))]
self.assertEqual(zeros, ['e0'])
end_less = [e.name for e in Experiment.objects.filter(end__lt=F('start') + F('estimated_time'))]
self.assertEqual(end_less, ['e2'])
delta_math = [
e.name for e in
Experiment.objects.filter(end__gte=F('start') + F('estimated_time') + datetime.timedelta(hours=1))
]
self.assertEqual(delta_math, ['e4'])
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('start') + Value(None, output_field=DurationField()),
output_field=DateTimeField(),
))
self.assertIsNone(queryset.first().shifted)
def test_durationfield_multiply_divide(self):
Experiment.objects.update(scalar=2)
tests = [
(Decimal('2'), 2),
(F('scalar'), 2),
(2, 2),
(3.2, 3.2),
]
for expr, scalar in tests:
with self.subTest(expr=expr):
qs = Experiment.objects.annotate(
multiplied=ExpressionWrapper(
expr * F('estimated_time'),
output_field=DurationField(),
),
divided=ExpressionWrapper(
F('estimated_time') / expr,
output_field=DurationField(),
),
)
for experiment in qs:
self.assertEqual(
experiment.multiplied,
experiment.estimated_time * scalar,
)
self.assertEqual(
experiment.divided,
experiment.estimated_time / scalar,
)
def test_duration_expressions(self):
for delta in self.deltas:
qs = Experiment.objects.annotate(duration=F('estimated_time') + delta)
for obj in qs:
self.assertEqual(obj.duration, obj.estimated_time + delta)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_subtraction(self):
queryset = Experiment.objects.annotate(
completion_duration=F('completed') - F('assigned'),
)
at_least_5_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=5))}
self.assertEqual(at_least_5_days, {'e3', 'e4', 'e5'})
at_least_120_days = {e.name for e in queryset.filter(completion_duration__gte=datetime.timedelta(days=120))}
self.assertEqual(at_least_120_days, {'e5'})
less_than_5_days = {e.name for e in queryset.filter(completion_duration__lt=datetime.timedelta(days=5))}
self.assertEqual(less_than_5_days, {'e0', 'e1', 'e2'})
queryset = Experiment.objects.annotate(
difference=F('completed') - Value(None, output_field=DateField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('completed') - Value(None, output_field=DurationField()),
output_field=DateField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_subquery_subtraction(self):
subquery = Experiment.objects.filter(pk=OuterRef('pk')).values('completed')
queryset = Experiment.objects.annotate(
difference=subquery - F('completed'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_date_case_subtraction(self):
queryset = Experiment.objects.annotate(
date_case=Case(
When(Q(name='e0'), then=F('completed')),
output_field=DateField(),
),
completed_value=Value(
self.e0.completed,
output_field=DateField(),
),
difference=F('date_case') - F('completed_value'),
).filter(difference=datetime.timedelta())
self.assertEqual(queryset.get(), self.e0)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_time_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
queryset = Time.objects.annotate(
difference=F('time') - Value(datetime.time(11, 15, 0)),
)
self.assertEqual(
queryset.get().difference,
datetime.timedelta(hours=1, minutes=15, seconds=15, microseconds=2345)
)
queryset = Time.objects.annotate(
difference=F('time') - Value(None, output_field=TimeField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Time.objects.annotate(shifted=ExpressionWrapper(
F('time') - Value(None, output_field=DurationField()),
output_field=TimeField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_time_subquery_subtraction(self):
Time.objects.create(time=datetime.time(12, 30, 15, 2345))
subquery = Time.objects.filter(pk=OuterRef('pk')).values('time')
queryset = Time.objects.annotate(
difference=subquery - F('time'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subtraction(self):
under_estimate = [
e.name for e in Experiment.objects.filter(estimated_time__gt=F('end') - F('start'))
]
self.assertEqual(under_estimate, ['e2'])
over_estimate = [
e.name for e in Experiment.objects.filter(estimated_time__lt=F('end') - F('start'))
]
self.assertEqual(over_estimate, ['e4'])
queryset = Experiment.objects.annotate(
difference=F('start') - Value(None, output_field=DateTimeField()),
)
self.assertIsNone(queryset.first().difference)
queryset = Experiment.objects.annotate(shifted=ExpressionWrapper(
F('start') - Value(None, output_field=DurationField()),
output_field=DateTimeField(),
))
self.assertIsNone(queryset.first().shifted)
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subquery_subtraction(self):
subquery = Experiment.objects.filter(pk=OuterRef('pk')).values('start')
queryset = Experiment.objects.annotate(
difference=subquery - F('start'),
).filter(difference=datetime.timedelta())
self.assertTrue(queryset.exists())
@skipUnlessDBFeature('supports_temporal_subtraction')
def test_datetime_subtraction_microseconds(self):
delta = datetime.timedelta(microseconds=8999999999999999)
Experiment.objects.update(end=F('start') + delta)
qs = Experiment.objects.annotate(delta=F('end') - F('start'))
for e in qs:
self.assertEqual(e.delta, delta)
def test_duration_with_datetime(self):
# Exclude e1 which has very high precision so we can test this on all
# backends regardless of whether or not it supports
# microsecond_precision.
over_estimate = Experiment.objects.exclude(name='e1').filter(
completed__gt=self.stime + F('estimated_time'),
).order_by('name')
self.assertQuerysetEqual(over_estimate, ['e3', 'e4', 'e5'], lambda e: e.name)
def test_duration_with_datetime_microseconds(self):
delta = datetime.timedelta(microseconds=8999999999999999)
qs = Experiment.objects.annotate(dt=ExpressionWrapper(
F('start') + delta,
output_field=DateTimeField(),
))
for e in qs:
self.assertEqual(e.dt, e.start + delta)
def test_date_minus_duration(self):
more_than_4_days = Experiment.objects.filter(
assigned__lt=F('completed') - Value(datetime.timedelta(days=4))
)
self.assertQuerysetEqual(more_than_4_days, ['e3', 'e4', 'e5'], lambda e: e.name)
def test_negative_timedelta_update(self):
# subtract 30 seconds, 30 minutes, 2 hours and 2 days
experiments = Experiment.objects.filter(name='e0').annotate(
start_sub_seconds=F('start') + datetime.timedelta(seconds=-30),
).annotate(
start_sub_minutes=F('start_sub_seconds') + datetime.timedelta(minutes=-30),
).annotate(
start_sub_hours=F('start_sub_minutes') + datetime.timedelta(hours=-2),
).annotate(
new_start=F('start_sub_hours') + datetime.timedelta(days=-2),
)
expected_start = datetime.datetime(2010, 6, 23, 9, 45, 0)
# subtract 30 microseconds
experiments = experiments.annotate(new_start=F('new_start') + datetime.timedelta(microseconds=-30))
expected_start += datetime.timedelta(microseconds=+746970)
experiments.update(start=F('new_start'))
e0 = Experiment.objects.get(name='e0')
self.assertEqual(e0.start, expected_start)
class ValueTests(TestCase):
def test_update_TimeField_using_Value(self):
Time.objects.create()
Time.objects.update(time=Value(datetime.time(1), output_field=TimeField()))
self.assertEqual(Time.objects.get().time, datetime.time(1))
def test_update_UUIDField_using_Value(self):
UUID.objects.create()
UUID.objects.update(uuid=Value(uuid.UUID('12345678901234567890123456789012'), output_field=UUIDField()))
self.assertEqual(UUID.objects.get().uuid, uuid.UUID('12345678901234567890123456789012'))
def test_deconstruct(self):
value = Value('name')
path, args, kwargs = value.deconstruct()
self.assertEqual(path, 'django.db.models.expressions.Value')
self.assertEqual(args, (value.value,))
self.assertEqual(kwargs, {})
def test_deconstruct_output_field(self):
value = Value('name', output_field=CharField())
path, args, kwargs = value.deconstruct()
self.assertEqual(path, 'django.db.models.expressions.Value')
self.assertEqual(args, (value.value,))
self.assertEqual(len(kwargs), 1)
self.assertEqual(kwargs['output_field'].deconstruct(), CharField().deconstruct())
def test_repr(self):
tests = [
(None, 'Value(None)'),
('str', "Value('str')"),
(True, 'Value(True)'),
(42, 'Value(42)'),
(
datetime.datetime(2019, 5, 15),
'Value(datetime.datetime(2019, 5, 15, 0, 0))',
),
(Decimal('3.14'), "Value(Decimal('3.14'))"),
]
for value, expected in tests:
with self.subTest(value=value):
self.assertEqual(repr(Value(value)), expected)
def test_equal(self):
value = Value('name')
self.assertEqual(value, Value('name'))
self.assertNotEqual(value, Value('username'))
def test_hash(self):
d = {Value('name'): 'Bob'}
self.assertIn(Value('name'), d)
self.assertEqual(d[Value('name')], 'Bob')
def test_equal_output_field(self):
value = Value('name', output_field=CharField())
same_value = Value('name', output_field=CharField())
other_value = Value('name', output_field=TimeField())
no_output_field = Value('name')
self.assertEqual(value, same_value)
self.assertNotEqual(value, other_value)
self.assertNotEqual(value, no_output_field)
def test_raise_empty_expressionlist(self):
msg = 'ExpressionList requires at least one expression'
with self.assertRaisesMessage(ValueError, msg):
ExpressionList()
def test_compile_unresolved(self):
# This test might need to be revisited later on if #25425 is enforced.
compiler = Time.objects.all().query.get_compiler(connection=connection)
value = Value('foo')
self.assertEqual(value.as_sql(compiler, connection), ('%s', ['foo']))
value = Value('foo', output_field=CharField())
self.assertEqual(value.as_sql(compiler, connection), ('%s', ['foo']))
def test_output_field_decimalfield(self):
Time.objects.create()
time = Time.objects.annotate(one=Value(1, output_field=DecimalField())).first()
self.assertEqual(time.one, 1)
def test_resolve_output_field(self):
value_types = [
('str', CharField),
(True, BooleanField),
(42, IntegerField),
(3.14, FloatField),
(datetime.date(2019, 5, 15), DateField),
(datetime.datetime(2019, 5, 15), DateTimeField),
(datetime.time(3, 16), TimeField),
(datetime.timedelta(1), DurationField),
(Decimal('3.14'), DecimalField),
(b'', BinaryField),
(uuid.uuid4(), UUIDField),
]
for value, output_field_type in value_types:
with self.subTest(type=type(value)):
expr = Value(value)
self.assertIsInstance(expr.output_field, output_field_type)
def test_resolve_output_field_failure(self):
msg = 'Cannot resolve expression type, unknown output_field'
with self.assertRaisesMessage(FieldError, msg):
Value(object()).output_field
class ExistsTests(TestCase):
def test_optimizations(self):
with CaptureQueriesContext(connection) as context:
list(Experiment.objects.values(exists=Exists(
Experiment.objects.order_by('pk'),
)).order_by())
captured_queries = context.captured_queries
self.assertEqual(len(captured_queries), 1)
captured_sql = captured_queries[0]['sql']
self.assertNotIn(
connection.ops.quote_name(Experiment._meta.pk.column),
captured_sql,
)
self.assertIn(
connection.ops.limit_offset_sql(None, 1),
captured_sql,
)
self.assertNotIn('ORDER BY', captured_sql)
class FieldTransformTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.sday = sday = datetime.date(2010, 6, 25)
cls.stime = stime = datetime.datetime(2010, 6, 25, 12, 15, 30, 747000)
cls.ex1 = Experiment.objects.create(
name='Experiment 1',
assigned=sday,
completed=sday + datetime.timedelta(2),
estimated_time=datetime.timedelta(2),
start=stime,
end=stime + datetime.timedelta(2),
)
def test_month_aggregation(self):
self.assertEqual(
Experiment.objects.aggregate(month_count=Count('assigned__month')),
{'month_count': 1}
)
def test_transform_in_values(self):
self.assertSequenceEqual(
Experiment.objects.values('assigned__month'),
[{'assigned__month': 6}],
)
def test_multiple_transforms_in_values(self):
self.assertSequenceEqual(
Experiment.objects.values('end__date__month'),
[{'end__date__month': 6}],
)
class ReprTests(SimpleTestCase):
def test_expressions(self):
self.assertEqual(
repr(Case(When(a=1))),
"<Case: CASE WHEN <Q: (AND: ('a', 1))> THEN Value(None), ELSE Value(None)>"
)
self.assertEqual(
repr(When(Q(age__gte=18), then=Value('legal'))),
"<When: WHEN <Q: (AND: ('age__gte', 18))> THEN Value('legal')>"
)
self.assertEqual(repr(Col('alias', 'field')), "Col(alias, field)")
self.assertEqual(repr(F('published')), "F(published)")
self.assertEqual(repr(F('cost') + F('tax')), "<CombinedExpression: F(cost) + F(tax)>")
self.assertEqual(
repr(ExpressionWrapper(F('cost') + F('tax'), IntegerField())),
"ExpressionWrapper(F(cost) + F(tax))"
)
self.assertEqual(repr(Func('published', function='TO_CHAR')), "Func(F(published), function=TO_CHAR)")
self.assertEqual(repr(OrderBy(Value(1))), 'OrderBy(Value(1), descending=False)')
self.assertEqual(repr(RawSQL('table.col', [])), "RawSQL(table.col, [])")
self.assertEqual(repr(Ref('sum_cost', Sum('cost'))), "Ref(sum_cost, Sum(F(cost)))")
self.assertEqual(repr(Value(1)), "Value(1)")
self.assertEqual(
repr(ExpressionList(F('col'), F('anothercol'))),
'ExpressionList(F(col), F(anothercol))'
)
self.assertEqual(
repr(ExpressionList(OrderBy(F('col'), descending=False))),
'ExpressionList(OrderBy(F(col), descending=False))'
)
def test_functions(self):
self.assertEqual(repr(Coalesce('a', 'b')), "Coalesce(F(a), F(b))")
self.assertEqual(repr(Concat('a', 'b')), "Concat(ConcatPair(F(a), F(b)))")
self.assertEqual(repr(Length('a')), "Length(F(a))")
self.assertEqual(repr(Lower('a')), "Lower(F(a))")
self.assertEqual(repr(Substr('a', 1, 3)), "Substr(F(a), Value(1), Value(3))")
self.assertEqual(repr(Upper('a')), "Upper(F(a))")
def test_aggregates(self):
self.assertEqual(repr(Avg('a')), "Avg(F(a))")
self.assertEqual(repr(Count('a')), "Count(F(a))")
self.assertEqual(repr(Count('*')), "Count('*')")
self.assertEqual(repr(Max('a')), "Max(F(a))")
self.assertEqual(repr(Min('a')), "Min(F(a))")
self.assertEqual(repr(StdDev('a')), "StdDev(F(a), sample=False)")
self.assertEqual(repr(Sum('a')), "Sum(F(a))")
self.assertEqual(repr(Variance('a', sample=True)), "Variance(F(a), sample=True)")
def test_distinct_aggregates(self):
self.assertEqual(repr(Count('a', distinct=True)), "Count(F(a), distinct=True)")
self.assertEqual(repr(Count('*', distinct=True)), "Count('*', distinct=True)")
def test_filtered_aggregates(self):
filter = Q(a=1)
self.assertEqual(repr(Avg('a', filter=filter)), "Avg(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Count('a', filter=filter)), "Count(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Max('a', filter=filter)), "Max(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(Min('a', filter=filter)), "Min(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(repr(StdDev('a', filter=filter)), "StdDev(F(a), filter=(AND: ('a', 1)), sample=False)")
self.assertEqual(repr(Sum('a', filter=filter)), "Sum(F(a), filter=(AND: ('a', 1)))")
self.assertEqual(
repr(Variance('a', sample=True, filter=filter)),
"Variance(F(a), filter=(AND: ('a', 1)), sample=True)"
)
self.assertEqual(
repr(Count('a', filter=filter, distinct=True)), "Count(F(a), distinct=True, filter=(AND: ('a', 1)))"
)
class CombinableTests(SimpleTestCase):
bitwise_msg = 'Use .bitand() and .bitor() for bitwise logical operations.'
def test_negation(self):
c = Combinable()
self.assertEqual(-c, c * -1)
def test_and(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
Combinable() & Combinable()
def test_or(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
Combinable() | Combinable()
def test_reversed_and(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
object() & Combinable()
def test_reversed_or(self):
with self.assertRaisesMessage(NotImplementedError, self.bitwise_msg):
object() | Combinable()
class CombinedExpressionTests(SimpleTestCase):
def test_resolve_output_field(self):
tests = [
(IntegerField, AutoField, IntegerField),
(AutoField, IntegerField, IntegerField),
(IntegerField, DecimalField, DecimalField),
(DecimalField, IntegerField, DecimalField),
(IntegerField, FloatField, FloatField),
(FloatField, IntegerField, FloatField),
]
connectors = [Combinable.ADD, Combinable.SUB, Combinable.MUL, Combinable.DIV]
for lhs, rhs, combined in tests:
for connector in connectors:
with self.subTest(lhs=lhs, connector=connector, rhs=rhs, combined=combined):
expr = CombinedExpression(
Expression(lhs()),
connector,
Expression(rhs()),
)
self.assertIsInstance(expr.output_field, combined)
class ExpressionWrapperTests(SimpleTestCase):
def test_empty_group_by(self):
expr = ExpressionWrapper(Value(3), output_field=IntegerField())
self.assertEqual(expr.get_group_by_cols(alias=None), [])
def test_non_empty_group_by(self):
value = Value('f')
value.output_field = None
expr = ExpressionWrapper(Lower(value), output_field=IntegerField())
group_by_cols = expr.get_group_by_cols(alias=None)
self.assertEqual(group_by_cols, [expr.expression])
self.assertEqual(group_by_cols[0].output_field, expr.output_field)
class OrderByTests(SimpleTestCase):
def test_equal(self):
self.assertEqual(
OrderBy(F('field'), nulls_last=True),
OrderBy(F('field'), nulls_last=True),
)
self.assertNotEqual(
OrderBy(F('field'), nulls_last=True),
OrderBy(F('field'), nulls_last=False),
)
def test_hash(self):
self.assertEqual(
hash(OrderBy(F('field'), nulls_last=True)),
hash(OrderBy(F('field'), nulls_last=True)),
)
self.assertNotEqual(
hash(OrderBy(F('field'), nulls_last=True)),
hash(OrderBy(F('field'), nulls_last=False)),
)
|
c2ab340d6fa83559dc1b566ed81db170f8d3fb03cdcd499f4a3f797da6c57298 | from unittest import mock
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import ObjectDoesNotExist
from django.db import connection
from django.db.models import Prefetch, QuerySet, prefetch_related_objects
from django.db.models.query import get_prefetcher
from django.db.models.sql import Query
from django.test import TestCase, override_settings
from django.test.utils import CaptureQueriesContext
from .models import (
Article, Author, Author2, AuthorAddress, AuthorWithAge, Bio, Book,
Bookmark, BookReview, BookWithYear, Comment, Department, Employee,
FavoriteAuthors, House, LessonEntry, ModelIterableSubclass, Person,
Qualification, Reader, Room, TaggedItem, Teacher, WordEntry,
)
class TestDataMixin:
@classmethod
def setUpTestData(cls):
cls.book1 = Book.objects.create(title='Poems')
cls.book2 = Book.objects.create(title='Jane Eyre')
cls.book3 = Book.objects.create(title='Wuthering Heights')
cls.book4 = Book.objects.create(title='Sense and Sensibility')
cls.author1 = Author.objects.create(name='Charlotte', first_book=cls.book1)
cls.author2 = Author.objects.create(name='Anne', first_book=cls.book1)
cls.author3 = Author.objects.create(name='Emily', first_book=cls.book1)
cls.author4 = Author.objects.create(name='Jane', first_book=cls.book4)
cls.book1.authors.add(cls.author1, cls.author2, cls.author3)
cls.book2.authors.add(cls.author1)
cls.book3.authors.add(cls.author3)
cls.book4.authors.add(cls.author4)
cls.reader1 = Reader.objects.create(name='Amy')
cls.reader2 = Reader.objects.create(name='Belinda')
cls.reader1.books_read.add(cls.book1, cls.book4)
cls.reader2.books_read.add(cls.book2, cls.book4)
class PrefetchRelatedTests(TestDataMixin, TestCase):
def assertWhereContains(self, sql, needle):
where_idx = sql.index('WHERE')
self.assertEqual(
sql.count(str(needle), where_idx), 1,
msg="WHERE clause doesn't contain %s, actual SQL: %s" % (needle, sql[where_idx:])
)
def test_m2m_forward(self):
with self.assertNumQueries(2):
lists = [list(b.authors.all()) for b in Book.objects.prefetch_related('authors')]
normal_lists = [list(b.authors.all()) for b in Book.objects.all()]
self.assertEqual(lists, normal_lists)
def test_m2m_reverse(self):
with self.assertNumQueries(2):
lists = [list(a.books.all()) for a in Author.objects.prefetch_related('books')]
normal_lists = [list(a.books.all()) for a in Author.objects.all()]
self.assertEqual(lists, normal_lists)
def test_foreignkey_forward(self):
with self.assertNumQueries(2):
books = [a.first_book for a in Author.objects.prefetch_related('first_book')]
normal_books = [a.first_book for a in Author.objects.all()]
self.assertEqual(books, normal_books)
def test_foreignkey_reverse(self):
with self.assertNumQueries(2):
[list(b.first_time_authors.all())
for b in Book.objects.prefetch_related('first_time_authors')]
self.assertSequenceEqual(self.book2.authors.all(), [self.author1])
def test_onetoone_reverse_no_match(self):
# Regression for #17439
with self.assertNumQueries(2):
book = Book.objects.prefetch_related('bookwithyear').all()[0]
with self.assertNumQueries(0):
with self.assertRaises(BookWithYear.DoesNotExist):
book.bookwithyear
def test_onetoone_reverse_with_to_field_pk(self):
"""
A model (Bio) with a OneToOneField primary key (author) that references
a non-pk field (name) on the related model (Author) is prefetchable.
"""
Bio.objects.bulk_create([
Bio(author=self.author1),
Bio(author=self.author2),
Bio(author=self.author3),
])
authors = Author.objects.filter(
name__in=[self.author1, self.author2, self.author3],
).prefetch_related('bio')
with self.assertNumQueries(2):
for author in authors:
self.assertEqual(author.name, author.bio.author.name)
def test_survives_clone(self):
with self.assertNumQueries(2):
[list(b.first_time_authors.all())
for b in Book.objects.prefetch_related('first_time_authors').exclude(id=1000)]
def test_len(self):
with self.assertNumQueries(2):
qs = Book.objects.prefetch_related('first_time_authors')
len(qs)
[list(b.first_time_authors.all()) for b in qs]
def test_bool(self):
with self.assertNumQueries(2):
qs = Book.objects.prefetch_related('first_time_authors')
bool(qs)
[list(b.first_time_authors.all()) for b in qs]
def test_count(self):
with self.assertNumQueries(2):
qs = Book.objects.prefetch_related('first_time_authors')
[b.first_time_authors.count() for b in qs]
def test_exists(self):
with self.assertNumQueries(2):
qs = Book.objects.prefetch_related('first_time_authors')
[b.first_time_authors.exists() for b in qs]
def test_in_and_prefetch_related(self):
"""
Regression test for #20242 - QuerySet "in" didn't work the first time
when using prefetch_related. This was fixed by the removal of chunked
reads from QuerySet iteration in
70679243d1786e03557c28929f9762a119e3ac14.
"""
qs = Book.objects.prefetch_related('first_time_authors')
self.assertIn(qs[0], qs)
def test_clear(self):
with self.assertNumQueries(5):
with_prefetch = Author.objects.prefetch_related('books')
without_prefetch = with_prefetch.prefetch_related(None)
[list(a.books.all()) for a in without_prefetch]
def test_m2m_then_m2m(self):
"""A m2m can be followed through another m2m."""
with self.assertNumQueries(3):
qs = Author.objects.prefetch_related('books__read_by')
lists = [[[str(r) for r in b.read_by.all()]
for b in a.books.all()]
for a in qs]
self.assertEqual(lists, [
[["Amy"], ["Belinda"]], # Charlotte - Poems, Jane Eyre
[["Amy"]], # Anne - Poems
[["Amy"], []], # Emily - Poems, Wuthering Heights
[["Amy", "Belinda"]], # Jane - Sense and Sense
])
def test_overriding_prefetch(self):
with self.assertNumQueries(3):
qs = Author.objects.prefetch_related('books', 'books__read_by')
lists = [[[str(r) for r in b.read_by.all()]
for b in a.books.all()]
for a in qs]
self.assertEqual(lists, [
[["Amy"], ["Belinda"]], # Charlotte - Poems, Jane Eyre
[["Amy"]], # Anne - Poems
[["Amy"], []], # Emily - Poems, Wuthering Heights
[["Amy", "Belinda"]], # Jane - Sense and Sense
])
with self.assertNumQueries(3):
qs = Author.objects.prefetch_related('books__read_by', 'books')
lists = [[[str(r) for r in b.read_by.all()]
for b in a.books.all()]
for a in qs]
self.assertEqual(lists, [
[["Amy"], ["Belinda"]], # Charlotte - Poems, Jane Eyre
[["Amy"]], # Anne - Poems
[["Amy"], []], # Emily - Poems, Wuthering Heights
[["Amy", "Belinda"]], # Jane - Sense and Sense
])
def test_get(self):
"""
Objects retrieved with .get() get the prefetch behavior.
"""
# Need a double
with self.assertNumQueries(3):
author = Author.objects.prefetch_related('books__read_by').get(name="Charlotte")
lists = [[str(r) for r in b.read_by.all()] for b in author.books.all()]
self.assertEqual(lists, [["Amy"], ["Belinda"]]) # Poems, Jane Eyre
def test_foreign_key_then_m2m(self):
"""
A m2m relation can be followed after a relation like ForeignKey that
doesn't have many objects.
"""
with self.assertNumQueries(2):
qs = Author.objects.select_related('first_book').prefetch_related('first_book__read_by')
lists = [[str(r) for r in a.first_book.read_by.all()]
for a in qs]
self.assertEqual(lists, [["Amy"], ["Amy"], ["Amy"], ["Amy", "Belinda"]])
def test_reverse_one_to_one_then_m2m(self):
"""
A m2m relation can be followed after going through the select_related
reverse of an o2o.
"""
qs = Author.objects.prefetch_related('bio__books').select_related('bio')
with self.assertNumQueries(1):
list(qs.all())
Bio.objects.create(author=self.author1)
with self.assertNumQueries(2):
list(qs.all())
def test_attribute_error(self):
qs = Reader.objects.all().prefetch_related('books_read__xyz')
msg = (
"Cannot find 'xyz' on Book object, 'books_read__xyz' "
"is an invalid parameter to prefetch_related()"
)
with self.assertRaisesMessage(AttributeError, msg) as cm:
list(qs)
self.assertIn('prefetch_related', str(cm.exception))
def test_invalid_final_lookup(self):
qs = Book.objects.prefetch_related('authors__name')
msg = (
"'authors__name' does not resolve to an item that supports "
"prefetching - this is an invalid parameter to prefetch_related()."
)
with self.assertRaisesMessage(ValueError, msg) as cm:
list(qs)
self.assertIn('prefetch_related', str(cm.exception))
self.assertIn("name", str(cm.exception))
def test_prefetch_eq(self):
prefetch_1 = Prefetch('authors', queryset=Author.objects.all())
prefetch_2 = Prefetch('books', queryset=Book.objects.all())
self.assertEqual(prefetch_1, prefetch_1)
self.assertEqual(prefetch_1, mock.ANY)
self.assertNotEqual(prefetch_1, prefetch_2)
def test_forward_m2m_to_attr_conflict(self):
msg = 'to_attr=authors conflicts with a field on the Book model.'
authors = Author.objects.all()
with self.assertRaisesMessage(ValueError, msg):
list(Book.objects.prefetch_related(
Prefetch('authors', queryset=authors, to_attr='authors'),
))
# Without the ValueError, an author was deleted due to the implicit
# save of the relation assignment.
self.assertEqual(self.book1.authors.count(), 3)
def test_reverse_m2m_to_attr_conflict(self):
msg = 'to_attr=books conflicts with a field on the Author model.'
poems = Book.objects.filter(title='Poems')
with self.assertRaisesMessage(ValueError, msg):
list(Author.objects.prefetch_related(
Prefetch('books', queryset=poems, to_attr='books'),
))
# Without the ValueError, a book was deleted due to the implicit
# save of reverse relation assignment.
self.assertEqual(self.author1.books.count(), 2)
def test_m2m_then_reverse_fk_object_ids(self):
with CaptureQueriesContext(connection) as queries:
list(Book.objects.prefetch_related('authors__addresses'))
sql = queries[-1]['sql']
self.assertWhereContains(sql, self.author1.name)
def test_m2m_then_m2m_object_ids(self):
with CaptureQueriesContext(connection) as queries:
list(Book.objects.prefetch_related('authors__favorite_authors'))
sql = queries[-1]['sql']
self.assertWhereContains(sql, self.author1.name)
def test_m2m_then_reverse_one_to_one_object_ids(self):
with CaptureQueriesContext(connection) as queries:
list(Book.objects.prefetch_related('authors__authorwithage'))
sql = queries[-1]['sql']
self.assertWhereContains(sql, self.author1.id)
def test_filter_deferred(self):
"""
Related filtering of prefetched querysets is deferred on m2m and
reverse m2o relations until necessary.
"""
add_q = Query.add_q
for relation in ['authors', 'first_time_authors']:
with self.subTest(relation=relation):
with mock.patch.object(
Query,
'add_q',
autospec=True,
side_effect=lambda self, q: add_q(self, q),
) as add_q_mock:
list(Book.objects.prefetch_related(relation))
self.assertEqual(add_q_mock.call_count, 1)
def test_named_values_list(self):
qs = Author.objects.prefetch_related('books')
self.assertCountEqual(
[value.name for value in qs.values_list('name', named=True)],
['Anne', 'Charlotte', 'Emily', 'Jane'],
)
class RawQuerySetTests(TestDataMixin, TestCase):
def test_basic(self):
with self.assertNumQueries(2):
books = Book.objects.raw(
"SELECT * FROM prefetch_related_book WHERE id = %s",
(self.book1.id,)
).prefetch_related('authors')
book1 = list(books)[0]
with self.assertNumQueries(0):
self.assertCountEqual(book1.authors.all(), [self.author1, self.author2, self.author3])
def test_prefetch_before_raw(self):
with self.assertNumQueries(2):
books = Book.objects.prefetch_related('authors').raw(
"SELECT * FROM prefetch_related_book WHERE id = %s",
(self.book1.id,)
)
book1 = list(books)[0]
with self.assertNumQueries(0):
self.assertCountEqual(book1.authors.all(), [self.author1, self.author2, self.author3])
def test_clear(self):
with self.assertNumQueries(5):
with_prefetch = Author.objects.raw(
"SELECT * FROM prefetch_related_author"
).prefetch_related('books')
without_prefetch = with_prefetch.prefetch_related(None)
[list(a.books.all()) for a in without_prefetch]
class CustomPrefetchTests(TestCase):
@classmethod
def traverse_qs(cls, obj_iter, path):
"""
Helper method that returns a list containing a list of the objects in the
obj_iter. Then for each object in the obj_iter, the path will be
recursively travelled and the found objects are added to the return value.
"""
ret_val = []
if hasattr(obj_iter, 'all'):
obj_iter = obj_iter.all()
try:
iter(obj_iter)
except TypeError:
obj_iter = [obj_iter]
for obj in obj_iter:
rel_objs = []
for part in path:
if not part:
continue
try:
related = getattr(obj, part[0])
except ObjectDoesNotExist:
continue
if related is not None:
rel_objs.extend(cls.traverse_qs(related, [part[1:]]))
ret_val.append((obj, rel_objs))
return ret_val
@classmethod
def setUpTestData(cls):
cls.person1 = Person.objects.create(name='Joe')
cls.person2 = Person.objects.create(name='Mary')
# Set main_room for each house before creating the next one for
# databases where supports_nullable_unique_constraints is False.
cls.house1 = House.objects.create(name='House 1', address='123 Main St', owner=cls.person1)
cls.room1_1 = Room.objects.create(name='Dining room', house=cls.house1)
cls.room1_2 = Room.objects.create(name='Lounge', house=cls.house1)
cls.room1_3 = Room.objects.create(name='Kitchen', house=cls.house1)
cls.house1.main_room = cls.room1_1
cls.house1.save()
cls.person1.houses.add(cls.house1)
cls.house2 = House.objects.create(name='House 2', address='45 Side St', owner=cls.person1)
cls.room2_1 = Room.objects.create(name='Dining room', house=cls.house2)
cls.room2_2 = Room.objects.create(name='Lounge', house=cls.house2)
cls.room2_3 = Room.objects.create(name='Kitchen', house=cls.house2)
cls.house2.main_room = cls.room2_1
cls.house2.save()
cls.person1.houses.add(cls.house2)
cls.house3 = House.objects.create(name='House 3', address='6 Downing St', owner=cls.person2)
cls.room3_1 = Room.objects.create(name='Dining room', house=cls.house3)
cls.room3_2 = Room.objects.create(name='Lounge', house=cls.house3)
cls.room3_3 = Room.objects.create(name='Kitchen', house=cls.house3)
cls.house3.main_room = cls.room3_1
cls.house3.save()
cls.person2.houses.add(cls.house3)
cls.house4 = House.objects.create(name='house 4', address="7 Regents St", owner=cls.person2)
cls.room4_1 = Room.objects.create(name='Dining room', house=cls.house4)
cls.room4_2 = Room.objects.create(name='Lounge', house=cls.house4)
cls.room4_3 = Room.objects.create(name='Kitchen', house=cls.house4)
cls.house4.main_room = cls.room4_1
cls.house4.save()
cls.person2.houses.add(cls.house4)
def test_traverse_qs(self):
qs = Person.objects.prefetch_related('houses')
related_objs_normal = [list(p.houses.all()) for p in qs],
related_objs_from_traverse = [[inner[0] for inner in o[1]]
for o in self.traverse_qs(qs, [['houses']])]
self.assertEqual(related_objs_normal, (related_objs_from_traverse,))
def test_ambiguous(self):
# Ambiguous: Lookup was already seen with a different queryset.
msg = (
"'houses' lookup was already seen with a different queryset. You "
"may need to adjust the ordering of your lookups."
)
# lookup.queryset shouldn't be evaluated.
with self.assertNumQueries(3):
with self.assertRaisesMessage(ValueError, msg):
self.traverse_qs(
Person.objects.prefetch_related(
'houses__rooms',
Prefetch('houses', queryset=House.objects.all()),
),
[['houses', 'rooms']],
)
# Ambiguous: Lookup houses_lst doesn't yet exist when performing houses_lst__rooms.
msg = (
"Cannot find 'houses_lst' on Person object, 'houses_lst__rooms' is "
"an invalid parameter to prefetch_related()"
)
with self.assertRaisesMessage(AttributeError, msg):
self.traverse_qs(
Person.objects.prefetch_related(
'houses_lst__rooms',
Prefetch('houses', queryset=House.objects.all(), to_attr='houses_lst')
),
[['houses', 'rooms']]
)
# Not ambiguous.
self.traverse_qs(
Person.objects.prefetch_related('houses__rooms', 'houses'),
[['houses', 'rooms']]
)
self.traverse_qs(
Person.objects.prefetch_related(
'houses__rooms',
Prefetch('houses', queryset=House.objects.all(), to_attr='houses_lst')
),
[['houses', 'rooms']]
)
def test_m2m(self):
# Control lookups.
with self.assertNumQueries(2):
lst1 = self.traverse_qs(
Person.objects.prefetch_related('houses'),
[['houses']]
)
# Test lookups.
with self.assertNumQueries(2):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(Prefetch('houses')),
[['houses']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(2):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(Prefetch('houses', to_attr='houses_lst')),
[['houses_lst']]
)
self.assertEqual(lst1, lst2)
def test_reverse_m2m(self):
# Control lookups.
with self.assertNumQueries(2):
lst1 = self.traverse_qs(
House.objects.prefetch_related('occupants'),
[['occupants']]
)
# Test lookups.
with self.assertNumQueries(2):
lst2 = self.traverse_qs(
House.objects.prefetch_related(Prefetch('occupants')),
[['occupants']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(2):
lst2 = self.traverse_qs(
House.objects.prefetch_related(Prefetch('occupants', to_attr='occupants_lst')),
[['occupants_lst']]
)
self.assertEqual(lst1, lst2)
def test_m2m_through_fk(self):
# Control lookups.
with self.assertNumQueries(3):
lst1 = self.traverse_qs(
Room.objects.prefetch_related('house__occupants'),
[['house', 'occupants']]
)
# Test lookups.
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Room.objects.prefetch_related(Prefetch('house__occupants')),
[['house', 'occupants']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Room.objects.prefetch_related(Prefetch('house__occupants', to_attr='occupants_lst')),
[['house', 'occupants_lst']]
)
self.assertEqual(lst1, lst2)
def test_m2m_through_gfk(self):
TaggedItem.objects.create(tag="houses", content_object=self.house1)
TaggedItem.objects.create(tag="houses", content_object=self.house2)
# Control lookups.
with self.assertNumQueries(3):
lst1 = self.traverse_qs(
TaggedItem.objects.filter(tag='houses').prefetch_related('content_object__rooms'),
[['content_object', 'rooms']]
)
# Test lookups.
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
TaggedItem.objects.prefetch_related(
Prefetch('content_object'),
Prefetch('content_object__rooms', to_attr='rooms_lst')
),
[['content_object', 'rooms_lst']]
)
self.assertEqual(lst1, lst2)
def test_o2m_through_m2m(self):
# Control lookups.
with self.assertNumQueries(3):
lst1 = self.traverse_qs(
Person.objects.prefetch_related('houses', 'houses__rooms'),
[['houses', 'rooms']]
)
# Test lookups.
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(Prefetch('houses'), 'houses__rooms'),
[['houses', 'rooms']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(Prefetch('houses'), Prefetch('houses__rooms')),
[['houses', 'rooms']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(Prefetch('houses', to_attr='houses_lst'), 'houses_lst__rooms'),
[['houses_lst', 'rooms']]
)
self.assertEqual(lst1, lst2)
with self.assertNumQueries(3):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(
Prefetch('houses', to_attr='houses_lst'),
Prefetch('houses_lst__rooms', to_attr='rooms_lst')
),
[['houses_lst', 'rooms_lst']]
)
self.assertEqual(lst1, lst2)
def test_generic_rel(self):
bookmark = Bookmark.objects.create(url='http://www.djangoproject.com/')
TaggedItem.objects.create(content_object=bookmark, tag='django')
TaggedItem.objects.create(content_object=bookmark, favorite=bookmark, tag='python')
# Control lookups.
with self.assertNumQueries(4):
lst1 = self.traverse_qs(
Bookmark.objects.prefetch_related('tags', 'tags__content_object', 'favorite_tags'),
[['tags', 'content_object'], ['favorite_tags']]
)
# Test lookups.
with self.assertNumQueries(4):
lst2 = self.traverse_qs(
Bookmark.objects.prefetch_related(
Prefetch('tags', to_attr='tags_lst'),
Prefetch('tags_lst__content_object'),
Prefetch('favorite_tags'),
),
[['tags_lst', 'content_object'], ['favorite_tags']]
)
self.assertEqual(lst1, lst2)
def test_traverse_single_item_property(self):
# Control lookups.
with self.assertNumQueries(5):
lst1 = self.traverse_qs(
Person.objects.prefetch_related(
'houses__rooms',
'primary_house__occupants__houses',
),
[['primary_house', 'occupants', 'houses']]
)
# Test lookups.
with self.assertNumQueries(5):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(
'houses__rooms',
Prefetch('primary_house__occupants', to_attr='occupants_lst'),
'primary_house__occupants_lst__houses',
),
[['primary_house', 'occupants_lst', 'houses']]
)
self.assertEqual(lst1, lst2)
def test_traverse_multiple_items_property(self):
# Control lookups.
with self.assertNumQueries(4):
lst1 = self.traverse_qs(
Person.objects.prefetch_related(
'houses',
'all_houses__occupants__houses',
),
[['all_houses', 'occupants', 'houses']]
)
# Test lookups.
with self.assertNumQueries(4):
lst2 = self.traverse_qs(
Person.objects.prefetch_related(
'houses',
Prefetch('all_houses__occupants', to_attr='occupants_lst'),
'all_houses__occupants_lst__houses',
),
[['all_houses', 'occupants_lst', 'houses']]
)
self.assertEqual(lst1, lst2)
def test_custom_qs(self):
# Test basic.
with self.assertNumQueries(2):
lst1 = list(Person.objects.prefetch_related('houses'))
with self.assertNumQueries(2):
lst2 = list(Person.objects.prefetch_related(
Prefetch('houses', queryset=House.objects.all(), to_attr='houses_lst')))
self.assertEqual(
self.traverse_qs(lst1, [['houses']]),
self.traverse_qs(lst2, [['houses_lst']])
)
# Test queryset filtering.
with self.assertNumQueries(2):
lst2 = list(
Person.objects.prefetch_related(
Prefetch(
'houses',
queryset=House.objects.filter(pk__in=[self.house1.pk, self.house3.pk]),
to_attr='houses_lst',
)
)
)
self.assertEqual(len(lst2[0].houses_lst), 1)
self.assertEqual(lst2[0].houses_lst[0], self.house1)
self.assertEqual(len(lst2[1].houses_lst), 1)
self.assertEqual(lst2[1].houses_lst[0], self.house3)
# Test flattened.
with self.assertNumQueries(3):
lst1 = list(Person.objects.prefetch_related('houses__rooms'))
with self.assertNumQueries(3):
lst2 = list(Person.objects.prefetch_related(
Prefetch('houses__rooms', queryset=Room.objects.all(), to_attr='rooms_lst')))
self.assertEqual(
self.traverse_qs(lst1, [['houses', 'rooms']]),
self.traverse_qs(lst2, [['houses', 'rooms_lst']])
)
# Test inner select_related.
with self.assertNumQueries(3):
lst1 = list(Person.objects.prefetch_related('houses__owner'))
with self.assertNumQueries(2):
lst2 = list(Person.objects.prefetch_related(
Prefetch('houses', queryset=House.objects.select_related('owner'))))
self.assertEqual(
self.traverse_qs(lst1, [['houses', 'owner']]),
self.traverse_qs(lst2, [['houses', 'owner']])
)
# Test inner prefetch.
inner_rooms_qs = Room.objects.filter(pk__in=[self.room1_1.pk, self.room1_2.pk])
houses_qs_prf = House.objects.prefetch_related(
Prefetch('rooms', queryset=inner_rooms_qs, to_attr='rooms_lst'))
with self.assertNumQueries(4):
lst2 = list(Person.objects.prefetch_related(
Prefetch('houses', queryset=houses_qs_prf.filter(pk=self.house1.pk), to_attr='houses_lst'),
Prefetch('houses_lst__rooms_lst__main_room_of')
))
self.assertEqual(len(lst2[0].houses_lst[0].rooms_lst), 2)
self.assertEqual(lst2[0].houses_lst[0].rooms_lst[0], self.room1_1)
self.assertEqual(lst2[0].houses_lst[0].rooms_lst[1], self.room1_2)
self.assertEqual(lst2[0].houses_lst[0].rooms_lst[0].main_room_of, self.house1)
self.assertEqual(len(lst2[1].houses_lst), 0)
# Test ForwardManyToOneDescriptor.
houses = House.objects.select_related('owner')
with self.assertNumQueries(6):
rooms = Room.objects.all().prefetch_related('house')
lst1 = self.traverse_qs(rooms, [['house', 'owner']])
with self.assertNumQueries(2):
rooms = Room.objects.all().prefetch_related(Prefetch('house', queryset=houses.all()))
lst2 = self.traverse_qs(rooms, [['house', 'owner']])
self.assertEqual(lst1, lst2)
with self.assertNumQueries(2):
houses = House.objects.select_related('owner')
rooms = Room.objects.all().prefetch_related(Prefetch('house', queryset=houses.all(), to_attr='house_attr'))
lst2 = self.traverse_qs(rooms, [['house_attr', 'owner']])
self.assertEqual(lst1, lst2)
room = Room.objects.all().prefetch_related(
Prefetch('house', queryset=houses.filter(address='DoesNotExist'))
).first()
with self.assertRaises(ObjectDoesNotExist):
getattr(room, 'house')
room = Room.objects.all().prefetch_related(
Prefetch('house', queryset=houses.filter(address='DoesNotExist'), to_attr='house_attr')
).first()
self.assertIsNone(room.house_attr)
rooms = Room.objects.all().prefetch_related(Prefetch('house', queryset=House.objects.only('name')))
with self.assertNumQueries(2):
getattr(rooms.first().house, 'name')
with self.assertNumQueries(3):
getattr(rooms.first().house, 'address')
# Test ReverseOneToOneDescriptor.
houses = House.objects.select_related('owner')
with self.assertNumQueries(6):
rooms = Room.objects.all().prefetch_related('main_room_of')
lst1 = self.traverse_qs(rooms, [['main_room_of', 'owner']])
with self.assertNumQueries(2):
rooms = Room.objects.all().prefetch_related(Prefetch('main_room_of', queryset=houses.all()))
lst2 = self.traverse_qs(rooms, [['main_room_of', 'owner']])
self.assertEqual(lst1, lst2)
with self.assertNumQueries(2):
rooms = list(
Room.objects.all().prefetch_related(
Prefetch('main_room_of', queryset=houses.all(), to_attr='main_room_of_attr')
)
)
lst2 = self.traverse_qs(rooms, [['main_room_of_attr', 'owner']])
self.assertEqual(lst1, lst2)
room = Room.objects.filter(main_room_of__isnull=False).prefetch_related(
Prefetch('main_room_of', queryset=houses.filter(address='DoesNotExist'))
).first()
with self.assertRaises(ObjectDoesNotExist):
getattr(room, 'main_room_of')
room = Room.objects.filter(main_room_of__isnull=False).prefetch_related(
Prefetch('main_room_of', queryset=houses.filter(address='DoesNotExist'), to_attr='main_room_of_attr')
).first()
self.assertIsNone(room.main_room_of_attr)
# The custom queryset filters should be applied to the queryset
# instance returned by the manager.
person = Person.objects.prefetch_related(
Prefetch('houses', queryset=House.objects.filter(name='House 1')),
).get(pk=self.person1.pk)
self.assertEqual(
list(person.houses.all()),
list(person.houses.all().all()),
)
def test_nested_prefetch_related_are_not_overwritten(self):
# Regression test for #24873
houses_2 = House.objects.prefetch_related(Prefetch('rooms'))
persons = Person.objects.prefetch_related(Prefetch('houses', queryset=houses_2))
houses = House.objects.prefetch_related(Prefetch('occupants', queryset=persons))
list(houses) # queryset must be evaluated once to reproduce the bug.
self.assertEqual(
houses.all()[0].occupants.all()[0].houses.all()[1].rooms.all()[0],
self.room2_1
)
def test_nested_prefetch_related_with_duplicate_prefetcher(self):
"""
Nested prefetches whose name clashes with descriptor names
(Person.houses here) are allowed.
"""
occupants = Person.objects.prefetch_related(
Prefetch('houses', to_attr='some_attr_name'),
Prefetch('houses', queryset=House.objects.prefetch_related('main_room')),
)
houses = House.objects.prefetch_related(Prefetch('occupants', queryset=occupants))
with self.assertNumQueries(5):
self.traverse_qs(list(houses), [['occupants', 'houses', 'main_room']])
def test_values_queryset(self):
msg = 'Prefetch querysets cannot use raw(), values(), and values_list().'
with self.assertRaisesMessage(ValueError, msg):
Prefetch('houses', House.objects.values('pk'))
with self.assertRaisesMessage(ValueError, msg):
Prefetch('houses', House.objects.values_list('pk'))
# That error doesn't affect managers with custom ModelIterable subclasses
self.assertIs(Teacher.objects_custom.all()._iterable_class, ModelIterableSubclass)
Prefetch('teachers', Teacher.objects_custom.all())
def test_raw_queryset(self):
msg = 'Prefetch querysets cannot use raw(), values(), and values_list().'
with self.assertRaisesMessage(ValueError, msg):
Prefetch('houses', House.objects.raw('select pk from house'))
def test_to_attr_doesnt_cache_through_attr_as_list(self):
house = House.objects.prefetch_related(
Prefetch('rooms', queryset=Room.objects.all(), to_attr='to_rooms'),
).get(pk=self.house3.pk)
self.assertIsInstance(house.rooms.all(), QuerySet)
def test_to_attr_cached_property(self):
persons = Person.objects.prefetch_related(
Prefetch('houses', House.objects.all(), to_attr='cached_all_houses'),
)
for person in persons:
# To bypass caching at the related descriptor level, don't use
# person.houses.all() here.
all_houses = list(House.objects.filter(occupants=person))
with self.assertNumQueries(0):
self.assertEqual(person.cached_all_houses, all_houses)
def test_filter_deferred(self):
"""
Related filtering of prefetched querysets is deferred until necessary.
"""
add_q = Query.add_q
with mock.patch.object(
Query,
'add_q',
autospec=True,
side_effect=lambda self, q: add_q(self, q),
) as add_q_mock:
list(House.objects.prefetch_related(
Prefetch('occupants', queryset=Person.objects.all())
))
self.assertEqual(add_q_mock.call_count, 1)
class DefaultManagerTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.qual1 = Qualification.objects.create(name='BA')
cls.qual2 = Qualification.objects.create(name='BSci')
cls.qual3 = Qualification.objects.create(name='MA')
cls.qual4 = Qualification.objects.create(name='PhD')
cls.teacher1 = Teacher.objects.create(name='Mr Cleese')
cls.teacher2 = Teacher.objects.create(name='Mr Idle')
cls.teacher3 = Teacher.objects.create(name='Mr Chapman')
cls.teacher1.qualifications.add(cls.qual1, cls.qual2, cls.qual3, cls.qual4)
cls.teacher2.qualifications.add(cls.qual1)
cls.teacher3.qualifications.add(cls.qual2)
cls.dept1 = Department.objects.create(name='English')
cls.dept2 = Department.objects.create(name='Physics')
cls.dept1.teachers.add(cls.teacher1, cls.teacher2)
cls.dept2.teachers.add(cls.teacher1, cls.teacher3)
def test_m2m_then_m2m(self):
with self.assertNumQueries(3):
# When we prefetch the teachers, and force the query, we don't want
# the default manager on teachers to immediately get all the related
# qualifications, since this will do one query per teacher.
qs = Department.objects.prefetch_related('teachers')
depts = "".join("%s department: %s\n" %
(dept.name, ", ".join(str(t) for t in dept.teachers.all()))
for dept in qs)
self.assertEqual(depts,
"English department: Mr Cleese (BA, BSci, MA, PhD), Mr Idle (BA)\n"
"Physics department: Mr Cleese (BA, BSci, MA, PhD), Mr Chapman (BSci)\n")
class GenericRelationTests(TestCase):
@classmethod
def setUpTestData(cls):
book1 = Book.objects.create(title="Winnie the Pooh")
book2 = Book.objects.create(title="Do you like green eggs and spam?")
book3 = Book.objects.create(title="Three Men In A Boat")
reader1 = Reader.objects.create(name="me")
reader2 = Reader.objects.create(name="you")
reader3 = Reader.objects.create(name="someone")
book1.read_by.add(reader1, reader2)
book2.read_by.add(reader2)
book3.read_by.add(reader3)
cls.book1, cls.book2, cls.book3 = book1, book2, book3
cls.reader1, cls.reader2, cls.reader3 = reader1, reader2, reader3
def test_prefetch_GFK(self):
TaggedItem.objects.create(tag="awesome", content_object=self.book1)
TaggedItem.objects.create(tag="great", content_object=self.reader1)
TaggedItem.objects.create(tag="outstanding", content_object=self.book2)
TaggedItem.objects.create(tag="amazing", content_object=self.reader3)
# 1 for TaggedItem table, 1 for Book table, 1 for Reader table
with self.assertNumQueries(3):
qs = TaggedItem.objects.prefetch_related('content_object')
list(qs)
def test_prefetch_GFK_nonint_pk(self):
Comment.objects.create(comment="awesome", content_object=self.book1)
# 1 for Comment table, 1 for Book table
with self.assertNumQueries(2):
qs = Comment.objects.prefetch_related('content_object')
[c.content_object for c in qs]
def test_prefetch_GFK_uuid_pk(self):
article = Article.objects.create(name='Django')
Comment.objects.create(comment='awesome', content_object_uuid=article)
qs = Comment.objects.prefetch_related('content_object_uuid')
self.assertEqual([c.content_object_uuid for c in qs], [article])
def test_prefetch_GFK_fk_pk(self):
book = Book.objects.create(title='Poems')
book_with_year = BookWithYear.objects.create(book=book, published_year=2019)
Comment.objects.create(comment='awesome', content_object=book_with_year)
qs = Comment.objects.prefetch_related('content_object')
self.assertEqual([c.content_object for c in qs], [book_with_year])
def test_traverse_GFK(self):
"""
A 'content_object' can be traversed with prefetch_related() and
get to related objects on the other side (assuming it is suitably
filtered)
"""
TaggedItem.objects.create(tag="awesome", content_object=self.book1)
TaggedItem.objects.create(tag="awesome", content_object=self.book2)
TaggedItem.objects.create(tag="awesome", content_object=self.book3)
TaggedItem.objects.create(tag="awesome", content_object=self.reader1)
TaggedItem.objects.create(tag="awesome", content_object=self.reader2)
ct = ContentType.objects.get_for_model(Book)
# We get 3 queries - 1 for main query, 1 for content_objects since they
# all use the same table, and 1 for the 'read_by' relation.
with self.assertNumQueries(3):
# If we limit to books, we know that they will have 'read_by'
# attributes, so the following makes sense:
qs = TaggedItem.objects.filter(content_type=ct, tag='awesome').prefetch_related('content_object__read_by')
readers_of_awesome_books = {r.name for tag in qs
for r in tag.content_object.read_by.all()}
self.assertEqual(readers_of_awesome_books, {"me", "you", "someone"})
def test_nullable_GFK(self):
TaggedItem.objects.create(tag="awesome", content_object=self.book1,
created_by=self.reader1)
TaggedItem.objects.create(tag="great", content_object=self.book2)
TaggedItem.objects.create(tag="rubbish", content_object=self.book3)
with self.assertNumQueries(2):
result = [t.created_by for t in TaggedItem.objects.prefetch_related('created_by')]
self.assertEqual(result,
[t.created_by for t in TaggedItem.objects.all()])
def test_generic_relation(self):
bookmark = Bookmark.objects.create(url='http://www.djangoproject.com/')
TaggedItem.objects.create(content_object=bookmark, tag='django')
TaggedItem.objects.create(content_object=bookmark, tag='python')
with self.assertNumQueries(2):
tags = [t.tag for b in Bookmark.objects.prefetch_related('tags')
for t in b.tags.all()]
self.assertEqual(sorted(tags), ["django", "python"])
def test_charfield_GFK(self):
b = Bookmark.objects.create(url='http://www.djangoproject.com/')
TaggedItem.objects.create(content_object=b, tag='django')
TaggedItem.objects.create(content_object=b, favorite=b, tag='python')
with self.assertNumQueries(3):
bookmark = Bookmark.objects.filter(pk=b.pk).prefetch_related('tags', 'favorite_tags')[0]
self.assertEqual(sorted(i.tag for i in bookmark.tags.all()), ["django", "python"])
self.assertEqual([i.tag for i in bookmark.favorite_tags.all()], ["python"])
def test_custom_queryset(self):
bookmark = Bookmark.objects.create(url='http://www.djangoproject.com/')
django_tag = TaggedItem.objects.create(content_object=bookmark, tag='django')
TaggedItem.objects.create(content_object=bookmark, tag='python')
with self.assertNumQueries(2):
bookmark = Bookmark.objects.prefetch_related(
Prefetch('tags', TaggedItem.objects.filter(tag='django')),
).get()
with self.assertNumQueries(0):
self.assertEqual(list(bookmark.tags.all()), [django_tag])
# The custom queryset filters should be applied to the queryset
# instance returned by the manager.
self.assertEqual(list(bookmark.tags.all()), list(bookmark.tags.all().all()))
def test_deleted_GFK(self):
TaggedItem.objects.create(tag='awesome', content_object=self.book1)
TaggedItem.objects.create(tag='awesome', content_object=self.book2)
ct = ContentType.objects.get_for_model(Book)
book1_pk = self.book1.pk
self.book1.delete()
with self.assertNumQueries(2):
qs = TaggedItem.objects.filter(tag='awesome').prefetch_related('content_object')
result = [
(tag.object_id, tag.content_type_id, tag.content_object) for tag in qs
]
self.assertEqual(result, [
(book1_pk, ct.pk, None),
(self.book2.pk, ct.pk, self.book2),
])
class MultiTableInheritanceTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.book1 = BookWithYear.objects.create(title='Poems', published_year=2010)
cls.book2 = BookWithYear.objects.create(title='More poems', published_year=2011)
cls.author1 = AuthorWithAge.objects.create(name='Jane', first_book=cls.book1, age=50)
cls.author2 = AuthorWithAge.objects.create(name='Tom', first_book=cls.book1, age=49)
cls.author3 = AuthorWithAge.objects.create(name='Robert', first_book=cls.book2, age=48)
cls.author_address = AuthorAddress.objects.create(author=cls.author1, address='SomeStreet 1')
cls.book2.aged_authors.add(cls.author2, cls.author3)
cls.br1 = BookReview.objects.create(book=cls.book1, notes='review book1')
cls.br2 = BookReview.objects.create(book=cls.book2, notes='review book2')
def test_foreignkey(self):
with self.assertNumQueries(2):
qs = AuthorWithAge.objects.prefetch_related('addresses')
addresses = [[str(address) for address in obj.addresses.all()] for obj in qs]
self.assertEqual(addresses, [[str(self.author_address)], [], []])
def test_foreignkey_to_inherited(self):
with self.assertNumQueries(2):
qs = BookReview.objects.prefetch_related('book')
titles = [obj.book.title for obj in qs]
self.assertEqual(titles, ["Poems", "More poems"])
def test_m2m_to_inheriting_model(self):
qs = AuthorWithAge.objects.prefetch_related('books_with_year')
with self.assertNumQueries(2):
lst = [[str(book) for book in author.books_with_year.all()] for author in qs]
qs = AuthorWithAge.objects.all()
lst2 = [[str(book) for book in author.books_with_year.all()] for author in qs]
self.assertEqual(lst, lst2)
qs = BookWithYear.objects.prefetch_related('aged_authors')
with self.assertNumQueries(2):
lst = [[str(author) for author in book.aged_authors.all()] for book in qs]
qs = BookWithYear.objects.all()
lst2 = [[str(author) for author in book.aged_authors.all()] for book in qs]
self.assertEqual(lst, lst2)
def test_parent_link_prefetch(self):
with self.assertNumQueries(2):
[a.author for a in AuthorWithAge.objects.prefetch_related('author')]
@override_settings(DEBUG=True)
def test_child_link_prefetch(self):
with self.assertNumQueries(2):
authors = [a.authorwithage for a in Author.objects.prefetch_related('authorwithage')]
# Regression for #18090: the prefetching query must include an IN clause.
# Note that on Oracle the table name is upper case in the generated SQL,
# thus the .lower() call.
self.assertIn('authorwithage', connection.queries[-1]['sql'].lower())
self.assertIn(' IN ', connection.queries[-1]['sql'])
self.assertEqual(authors, [a.authorwithage for a in Author.objects.all()])
class ForeignKeyToFieldTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.book = Book.objects.create(title='Poems')
cls.author1 = Author.objects.create(name='Jane', first_book=cls.book)
cls.author2 = Author.objects.create(name='Tom', first_book=cls.book)
cls.author3 = Author.objects.create(name='Robert', first_book=cls.book)
cls.author_address = AuthorAddress.objects.create(author=cls.author1, address='SomeStreet 1')
FavoriteAuthors.objects.create(author=cls.author1, likes_author=cls.author2)
FavoriteAuthors.objects.create(author=cls.author2, likes_author=cls.author3)
FavoriteAuthors.objects.create(author=cls.author3, likes_author=cls.author1)
def test_foreignkey(self):
with self.assertNumQueries(2):
qs = Author.objects.prefetch_related('addresses')
addresses = [[str(address) for address in obj.addresses.all()]
for obj in qs]
self.assertEqual(addresses, [[str(self.author_address)], [], []])
def test_m2m(self):
with self.assertNumQueries(3):
qs = Author.objects.all().prefetch_related('favorite_authors', 'favors_me')
favorites = [(
[str(i_like) for i_like in author.favorite_authors.all()],
[str(likes_me) for likes_me in author.favors_me.all()]
) for author in qs]
self.assertEqual(
favorites,
[
([str(self.author2)], [str(self.author3)]),
([str(self.author3)], [str(self.author1)]),
([str(self.author1)], [str(self.author2)])
]
)
def test_m2m_manager_reused(self):
author = Author.objects.prefetch_related(
'favorite_authors',
'favors_me',
).first()
self.assertIs(author.favorite_authors, author.favorite_authors)
self.assertIs(author.favors_me, author.favors_me)
class LookupOrderingTest(TestCase):
"""
Test cases that demonstrate that ordering of lookups is important, and
ensure it is preserved.
"""
@classmethod
def setUpTestData(cls):
person1 = Person.objects.create(name='Joe')
person2 = Person.objects.create(name='Mary')
# Set main_room for each house before creating the next one for
# databases where supports_nullable_unique_constraints is False.
house1 = House.objects.create(address='123 Main St')
room1_1 = Room.objects.create(name='Dining room', house=house1)
Room.objects.create(name='Lounge', house=house1)
Room.objects.create(name='Kitchen', house=house1)
house1.main_room = room1_1
house1.save()
person1.houses.add(house1)
house2 = House.objects.create(address='45 Side St')
room2_1 = Room.objects.create(name='Dining room', house=house2)
Room.objects.create(name='Lounge', house=house2)
house2.main_room = room2_1
house2.save()
person1.houses.add(house2)
house3 = House.objects.create(address='6 Downing St')
room3_1 = Room.objects.create(name='Dining room', house=house3)
Room.objects.create(name='Lounge', house=house3)
Room.objects.create(name='Kitchen', house=house3)
house3.main_room = room3_1
house3.save()
person2.houses.add(house3)
house4 = House.objects.create(address='7 Regents St')
room4_1 = Room.objects.create(name='Dining room', house=house4)
Room.objects.create(name='Lounge', house=house4)
house4.main_room = room4_1
house4.save()
person2.houses.add(house4)
def test_order(self):
with self.assertNumQueries(4):
# The following two queries must be done in the same order as written,
# otherwise 'primary_house' will cause non-prefetched lookups
qs = Person.objects.prefetch_related('houses__rooms',
'primary_house__occupants')
[list(p.primary_house.occupants.all()) for p in qs]
class NullableTest(TestCase):
@classmethod
def setUpTestData(cls):
boss = Employee.objects.create(name="Peter")
Employee.objects.create(name="Joe", boss=boss)
Employee.objects.create(name="Angela", boss=boss)
def test_traverse_nullable(self):
# Because we use select_related() for 'boss', it doesn't need to be
# prefetched, but we can still traverse it although it contains some nulls
with self.assertNumQueries(2):
qs = Employee.objects.select_related('boss').prefetch_related('boss__serfs')
co_serfs = [list(e.boss.serfs.all()) if e.boss is not None else []
for e in qs]
qs2 = Employee.objects.select_related('boss')
co_serfs2 = [list(e.boss.serfs.all()) if e.boss is not None else [] for e in qs2]
self.assertEqual(co_serfs, co_serfs2)
def test_prefetch_nullable(self):
# One for main employee, one for boss, one for serfs
with self.assertNumQueries(3):
qs = Employee.objects.prefetch_related('boss__serfs')
co_serfs = [list(e.boss.serfs.all()) if e.boss is not None else []
for e in qs]
qs2 = Employee.objects.all()
co_serfs2 = [list(e.boss.serfs.all()) if e.boss is not None else [] for e in qs2]
self.assertEqual(co_serfs, co_serfs2)
def test_in_bulk(self):
"""
In-bulk does correctly prefetch objects by not using .iterator()
directly.
"""
boss1 = Employee.objects.create(name="Peter")
boss2 = Employee.objects.create(name="Jack")
with self.assertNumQueries(2):
# Prefetch is done and it does not cause any errors.
bulk = Employee.objects.prefetch_related('serfs').in_bulk([boss1.pk, boss2.pk])
for b in bulk.values():
list(b.serfs.all())
class MultiDbTests(TestCase):
databases = {'default', 'other'}
def test_using_is_honored_m2m(self):
B = Book.objects.using('other')
A = Author.objects.using('other')
book1 = B.create(title="Poems")
book2 = B.create(title="Jane Eyre")
book3 = B.create(title="Wuthering Heights")
book4 = B.create(title="Sense and Sensibility")
author1 = A.create(name="Charlotte", first_book=book1)
author2 = A.create(name="Anne", first_book=book1)
author3 = A.create(name="Emily", first_book=book1)
author4 = A.create(name="Jane", first_book=book4)
book1.authors.add(author1, author2, author3)
book2.authors.add(author1)
book3.authors.add(author3)
book4.authors.add(author4)
# Forward
qs1 = B.prefetch_related('authors')
with self.assertNumQueries(2, using='other'):
books = "".join("%s (%s)\n" %
(book.title, ", ".join(a.name for a in book.authors.all()))
for book in qs1)
self.assertEqual(books,
"Poems (Charlotte, Anne, Emily)\n"
"Jane Eyre (Charlotte)\n"
"Wuthering Heights (Emily)\n"
"Sense and Sensibility (Jane)\n")
# Reverse
qs2 = A.prefetch_related('books')
with self.assertNumQueries(2, using='other'):
authors = "".join("%s: %s\n" %
(author.name, ", ".join(b.title for b in author.books.all()))
for author in qs2)
self.assertEqual(authors,
"Charlotte: Poems, Jane Eyre\n"
"Anne: Poems\n"
"Emily: Poems, Wuthering Heights\n"
"Jane: Sense and Sensibility\n")
def test_using_is_honored_fkey(self):
B = Book.objects.using('other')
A = Author.objects.using('other')
book1 = B.create(title="Poems")
book2 = B.create(title="Sense and Sensibility")
A.create(name="Charlotte Bronte", first_book=book1)
A.create(name="Jane Austen", first_book=book2)
# Forward
with self.assertNumQueries(2, using='other'):
books = ", ".join(a.first_book.title for a in A.prefetch_related('first_book'))
self.assertEqual("Poems, Sense and Sensibility", books)
# Reverse
with self.assertNumQueries(2, using='other'):
books = "".join("%s (%s)\n" %
(b.title, ", ".join(a.name for a in b.first_time_authors.all()))
for b in B.prefetch_related('first_time_authors'))
self.assertEqual(books,
"Poems (Charlotte Bronte)\n"
"Sense and Sensibility (Jane Austen)\n")
def test_using_is_honored_inheritance(self):
B = BookWithYear.objects.using('other')
A = AuthorWithAge.objects.using('other')
book1 = B.create(title="Poems", published_year=2010)
B.create(title="More poems", published_year=2011)
A.create(name='Jane', first_book=book1, age=50)
A.create(name='Tom', first_book=book1, age=49)
# parent link
with self.assertNumQueries(2, using='other'):
authors = ", ".join(a.author.name for a in A.prefetch_related('author'))
self.assertEqual(authors, "Jane, Tom")
# child link
with self.assertNumQueries(2, using='other'):
ages = ", ".join(str(a.authorwithage.age) for a in A.prefetch_related('authorwithage'))
self.assertEqual(ages, "50, 49")
def test_using_is_honored_custom_qs(self):
B = Book.objects.using('other')
A = Author.objects.using('other')
book1 = B.create(title="Poems")
book2 = B.create(title="Sense and Sensibility")
A.create(name="Charlotte Bronte", first_book=book1)
A.create(name="Jane Austen", first_book=book2)
# Implicit hinting
with self.assertNumQueries(2, using='other'):
prefetch = Prefetch('first_time_authors', queryset=Author.objects.all())
books = "".join("%s (%s)\n" %
(b.title, ", ".join(a.name for a in b.first_time_authors.all()))
for b in B.prefetch_related(prefetch))
self.assertEqual(books,
"Poems (Charlotte Bronte)\n"
"Sense and Sensibility (Jane Austen)\n")
# Explicit using on the same db.
with self.assertNumQueries(2, using='other'):
prefetch = Prefetch('first_time_authors', queryset=Author.objects.using('other'))
books = "".join("%s (%s)\n" %
(b.title, ", ".join(a.name for a in b.first_time_authors.all()))
for b in B.prefetch_related(prefetch))
self.assertEqual(books,
"Poems (Charlotte Bronte)\n"
"Sense and Sensibility (Jane Austen)\n")
# Explicit using on a different db.
with self.assertNumQueries(1, using='default'), self.assertNumQueries(1, using='other'):
prefetch = Prefetch('first_time_authors', queryset=Author.objects.using('default'))
books = "".join("%s (%s)\n" %
(b.title, ", ".join(a.name for a in b.first_time_authors.all()))
for b in B.prefetch_related(prefetch))
self.assertEqual(books,
"Poems ()\n"
"Sense and Sensibility ()\n")
class Ticket19607Tests(TestCase):
@classmethod
def setUpTestData(cls):
LessonEntry.objects.bulk_create(
LessonEntry(id=id_, name1=name1, name2=name2)
for id_, name1, name2 in [
(1, 'einfach', 'simple'),
(2, 'schwierig', 'difficult'),
]
)
WordEntry.objects.bulk_create(
WordEntry(id=id_, lesson_entry_id=lesson_entry_id, name=name)
for id_, lesson_entry_id, name in [
(1, 1, 'einfach'),
(2, 1, 'simple'),
(3, 2, 'schwierig'),
(4, 2, 'difficult'),
]
)
def test_bug(self):
list(WordEntry.objects.prefetch_related('lesson_entry', 'lesson_entry__wordentry_set'))
class Ticket21410Tests(TestCase):
@classmethod
def setUpTestData(cls):
book1 = Book.objects.create(title='Poems')
book2 = Book.objects.create(title='Jane Eyre')
book3 = Book.objects.create(title='Wuthering Heights')
book4 = Book.objects.create(title='Sense and Sensibility')
author1 = Author2.objects.create(name='Charlotte', first_book=book1)
author2 = Author2.objects.create(name='Anne', first_book=book1)
author3 = Author2.objects.create(name='Emily', first_book=book1)
author4 = Author2.objects.create(name='Jane', first_book=book4)
author1.favorite_books.add(book1, book2, book3)
author2.favorite_books.add(book1)
author3.favorite_books.add(book2)
author4.favorite_books.add(book3)
def test_bug(self):
list(Author2.objects.prefetch_related('first_book', 'favorite_books'))
class Ticket21760Tests(TestCase):
@classmethod
def setUpTestData(cls):
cls.rooms = []
for _ in range(3):
house = House.objects.create()
for _ in range(3):
cls.rooms.append(Room.objects.create(house=house))
# Set main_room for each house before creating the next one for
# databases where supports_nullable_unique_constraints is False.
house.main_room = cls.rooms[-3]
house.save()
def test_bug(self):
prefetcher = get_prefetcher(self.rooms[0], 'house', 'house')[0]
queryset = prefetcher.get_prefetch_queryset(list(Room.objects.all()))[0]
self.assertNotIn(' JOIN ', str(queryset.query))
class DirectPrefetchedObjectCacheReuseTests(TestCase):
"""
prefetch_related() reuses objects fetched in _prefetched_objects_cache.
When objects are prefetched and not stored as an instance attribute (often
intermediary relationships), they are saved to the
_prefetched_objects_cache attribute. prefetch_related() takes
_prefetched_objects_cache into account when determining whether an object
has been fetched[1] and retrieves results from it when it is populated [2].
[1]: #25546 (duplicate queries on nested Prefetch)
[2]: #27554 (queryset evaluation fails with a mix of nested and flattened
prefetches)
"""
@classmethod
def setUpTestData(cls):
cls.book1, cls.book2 = [
Book.objects.create(title='book1'),
Book.objects.create(title='book2'),
]
cls.author11, cls.author12, cls.author21 = [
Author.objects.create(first_book=cls.book1, name='Author11'),
Author.objects.create(first_book=cls.book1, name='Author12'),
Author.objects.create(first_book=cls.book2, name='Author21'),
]
cls.author1_address1, cls.author1_address2, cls.author2_address1 = [
AuthorAddress.objects.create(author=cls.author11, address='Happy place'),
AuthorAddress.objects.create(author=cls.author12, address='Haunted house'),
AuthorAddress.objects.create(author=cls.author21, address='Happy place'),
]
cls.bookwithyear1 = BookWithYear.objects.create(title='Poems', published_year=2010)
cls.bookreview1 = BookReview.objects.create(book=cls.bookwithyear1)
def test_detect_is_fetched(self):
"""
Nested prefetch_related() shouldn't trigger duplicate queries for the same
lookup.
"""
with self.assertNumQueries(3):
books = Book.objects.filter(
title__in=['book1', 'book2'],
).prefetch_related(
Prefetch(
'first_time_authors',
Author.objects.prefetch_related(
Prefetch(
'addresses',
AuthorAddress.objects.filter(address='Happy place'),
)
),
),
)
book1, book2 = list(books)
with self.assertNumQueries(0):
self.assertSequenceEqual(book1.first_time_authors.all(), [self.author11, self.author12])
self.assertSequenceEqual(book2.first_time_authors.all(), [self.author21])
self.assertSequenceEqual(book1.first_time_authors.all()[0].addresses.all(), [self.author1_address1])
self.assertSequenceEqual(book1.first_time_authors.all()[1].addresses.all(), [])
self.assertSequenceEqual(book2.first_time_authors.all()[0].addresses.all(), [self.author2_address1])
self.assertEqual(
list(book1.first_time_authors.all()), list(book1.first_time_authors.all().all())
)
self.assertEqual(
list(book2.first_time_authors.all()), list(book2.first_time_authors.all().all())
)
self.assertEqual(
list(book1.first_time_authors.all()[0].addresses.all()),
list(book1.first_time_authors.all()[0].addresses.all().all())
)
self.assertEqual(
list(book1.first_time_authors.all()[1].addresses.all()),
list(book1.first_time_authors.all()[1].addresses.all().all())
)
self.assertEqual(
list(book2.first_time_authors.all()[0].addresses.all()),
list(book2.first_time_authors.all()[0].addresses.all().all())
)
def test_detect_is_fetched_with_to_attr(self):
with self.assertNumQueries(3):
books = Book.objects.filter(
title__in=['book1', 'book2'],
).prefetch_related(
Prefetch(
'first_time_authors',
Author.objects.prefetch_related(
Prefetch(
'addresses',
AuthorAddress.objects.filter(address='Happy place'),
to_attr='happy_place',
)
),
to_attr='first_authors',
),
)
book1, book2 = list(books)
with self.assertNumQueries(0):
self.assertEqual(book1.first_authors, [self.author11, self.author12])
self.assertEqual(book2.first_authors, [self.author21])
self.assertEqual(book1.first_authors[0].happy_place, [self.author1_address1])
self.assertEqual(book1.first_authors[1].happy_place, [])
self.assertEqual(book2.first_authors[0].happy_place, [self.author2_address1])
def test_prefetch_reverse_foreign_key(self):
with self.assertNumQueries(2):
bookwithyear1, = BookWithYear.objects.prefetch_related('bookreview_set')
with self.assertNumQueries(0):
self.assertCountEqual(bookwithyear1.bookreview_set.all(), [self.bookreview1])
with self.assertNumQueries(0):
prefetch_related_objects([bookwithyear1], 'bookreview_set')
def test_add_clears_prefetched_objects(self):
bookwithyear = BookWithYear.objects.get(pk=self.bookwithyear1.pk)
prefetch_related_objects([bookwithyear], 'bookreview_set')
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1])
new_review = BookReview.objects.create()
bookwithyear.bookreview_set.add(new_review)
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1, new_review])
def test_remove_clears_prefetched_objects(self):
bookwithyear = BookWithYear.objects.get(pk=self.bookwithyear1.pk)
prefetch_related_objects([bookwithyear], 'bookreview_set')
self.assertCountEqual(bookwithyear.bookreview_set.all(), [self.bookreview1])
bookwithyear.bookreview_set.remove(self.bookreview1)
self.assertCountEqual(bookwithyear.bookreview_set.all(), [])
class ReadPrefetchedObjectsCacheTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.book1 = Book.objects.create(title='Les confessions Volume I')
cls.book2 = Book.objects.create(title='Candide')
cls.author1 = AuthorWithAge.objects.create(name='Rousseau', first_book=cls.book1, age=70)
cls.author2 = AuthorWithAge.objects.create(name='Voltaire', first_book=cls.book2, age=65)
cls.book1.authors.add(cls.author1)
cls.book2.authors.add(cls.author2)
FavoriteAuthors.objects.create(author=cls.author1, likes_author=cls.author2)
def test_retrieves_results_from_prefetched_objects_cache(self):
"""
When intermediary results are prefetched without a destination
attribute, they are saved in the RelatedManager's cache
(_prefetched_objects_cache). prefetch_related() uses this cache
(#27554).
"""
authors = AuthorWithAge.objects.prefetch_related(
Prefetch(
'author',
queryset=Author.objects.prefetch_related(
# Results are saved in the RelatedManager's cache
# (_prefetched_objects_cache) and do not replace the
# RelatedManager on Author instances (favorite_authors)
Prefetch('favorite_authors__first_book'),
),
),
)
with self.assertNumQueries(4):
# AuthorWithAge -> Author -> FavoriteAuthors, Book
self.assertSequenceEqual(authors, [self.author1, self.author2])
|
38b2d2ab4b9d8c7d6238dcb7b90248ec040645b909ba0fe87505614d8820fd5a | import datetime
import decimal
import gettext as gettext_module
import os
import pickle
import re
import tempfile
from contextlib import contextmanager
from importlib import import_module
from pathlib import Path
from unittest import mock
from asgiref.local import Local
from django import forms
from django.apps import AppConfig
from django.conf import settings
from django.conf.locale import LANG_INFO
from django.conf.urls.i18n import i18n_patterns
from django.template import Context, Template
from django.test import (
RequestFactory, SimpleTestCase, TestCase, ignore_warnings,
override_settings,
)
from django.utils import translation
from django.utils.deprecation import RemovedInDjango50Warning
from django.utils.formats import (
date_format, get_format, iter_format_modules, localize, localize_input,
reset_format_cache, sanitize_separators, sanitize_strftime_format,
time_format,
)
from django.utils.numberformat import format as nformat
from django.utils.safestring import SafeString, mark_safe
from django.utils.translation import (
activate, check_for_language, deactivate, get_language, get_language_bidi,
get_language_from_request, get_language_info, gettext, gettext_lazy,
ngettext, ngettext_lazy, npgettext, npgettext_lazy, pgettext,
round_away_from_one, to_language, to_locale, trans_null, trans_real,
)
from django.utils.translation.reloader import (
translation_file_changed, watch_for_translation_changes,
)
from .forms import CompanyForm, I18nForm, SelectDateForm
from .models import Company, TestModel
here = os.path.dirname(os.path.abspath(__file__))
extended_locale_paths = settings.LOCALE_PATHS + [
os.path.join(here, 'other', 'locale'),
]
class AppModuleStub:
def __init__(self, **kwargs):
self.__dict__.update(kwargs)
@contextmanager
def patch_formats(lang, **settings):
from django.utils.formats import _format_cache
# Populate _format_cache with temporary values
for key, value in settings.items():
_format_cache[(key, lang)] = value
try:
yield
finally:
reset_format_cache()
class TranslationTests(SimpleTestCase):
@translation.override('fr')
def test_plural(self):
"""
Test plurals with ngettext. French differs from English in that 0 is singular.
"""
self.assertEqual(
ngettext('%(num)d year', '%(num)d years', 0) % {'num': 0},
'0 année',
)
self.assertEqual(
ngettext('%(num)d year', '%(num)d years', 2) % {'num': 2},
'2 années',
)
self.assertEqual(ngettext("%(size)d byte", "%(size)d bytes", 0) % {'size': 0}, "0 octet")
self.assertEqual(ngettext("%(size)d byte", "%(size)d bytes", 2) % {'size': 2}, "2 octets")
def test_plural_null(self):
g = trans_null.ngettext
self.assertEqual(g('%(num)d year', '%(num)d years', 0) % {'num': 0}, '0 years')
self.assertEqual(g('%(num)d year', '%(num)d years', 1) % {'num': 1}, '1 year')
self.assertEqual(g('%(num)d year', '%(num)d years', 2) % {'num': 2}, '2 years')
@override_settings(LOCALE_PATHS=extended_locale_paths)
@translation.override('fr')
def test_multiple_plurals_per_language(self):
"""
Normally, French has 2 plurals. As other/locale/fr/LC_MESSAGES/django.po
has a different plural equation with 3 plurals, this tests if those
plural are honored.
"""
self.assertEqual(ngettext("%d singular", "%d plural", 0) % 0, "0 pluriel1")
self.assertEqual(ngettext("%d singular", "%d plural", 1) % 1, "1 singulier")
self.assertEqual(ngettext("%d singular", "%d plural", 2) % 2, "2 pluriel2")
french = trans_real.catalog()
# Internal _catalog can query subcatalogs (from different po files).
self.assertEqual(french._catalog[('%d singular', 0)], '%d singulier')
self.assertEqual(french._catalog[('%(num)d hour', 0)], '%(num)d heure')
def test_override(self):
activate('de')
try:
with translation.override('pl'):
self.assertEqual(get_language(), 'pl')
self.assertEqual(get_language(), 'de')
with translation.override(None):
self.assertIsNone(get_language())
with translation.override('pl'):
pass
self.assertIsNone(get_language())
self.assertEqual(get_language(), 'de')
finally:
deactivate()
def test_override_decorator(self):
@translation.override('pl')
def func_pl():
self.assertEqual(get_language(), 'pl')
@translation.override(None)
def func_none():
self.assertIsNone(get_language())
try:
activate('de')
func_pl()
self.assertEqual(get_language(), 'de')
func_none()
self.assertEqual(get_language(), 'de')
finally:
deactivate()
def test_override_exit(self):
"""
The language restored is the one used when the function was
called, not the one used when the decorator was initialized (#23381).
"""
activate('fr')
@translation.override('pl')
def func_pl():
pass
deactivate()
try:
activate('en')
func_pl()
self.assertEqual(get_language(), 'en')
finally:
deactivate()
def test_lazy_objects(self):
"""
Format string interpolation should work with *_lazy objects.
"""
s = gettext_lazy('Add %(name)s')
d = {'name': 'Ringo'}
self.assertEqual('Add Ringo', s % d)
with translation.override('de', deactivate=True):
self.assertEqual('Ringo hinzuf\xfcgen', s % d)
with translation.override('pl'):
self.assertEqual('Dodaj Ringo', s % d)
# It should be possible to compare *_lazy objects.
s1 = gettext_lazy('Add %(name)s')
self.assertEqual(s, s1)
s2 = gettext_lazy('Add %(name)s')
s3 = gettext_lazy('Add %(name)s')
self.assertEqual(s2, s3)
self.assertEqual(s, s2)
s4 = gettext_lazy('Some other string')
self.assertNotEqual(s, s4)
def test_lazy_pickle(self):
s1 = gettext_lazy("test")
self.assertEqual(str(s1), "test")
s2 = pickle.loads(pickle.dumps(s1))
self.assertEqual(str(s2), "test")
@override_settings(LOCALE_PATHS=extended_locale_paths)
def test_ngettext_lazy(self):
simple_with_format = ngettext_lazy('%d good result', '%d good results')
simple_context_with_format = npgettext_lazy('Exclamation', '%d good result', '%d good results')
simple_without_format = ngettext_lazy('good result', 'good results')
with translation.override('de'):
self.assertEqual(simple_with_format % 1, '1 gutes Resultat')
self.assertEqual(simple_with_format % 4, '4 guten Resultate')
self.assertEqual(simple_context_with_format % 1, '1 gutes Resultat!')
self.assertEqual(simple_context_with_format % 4, '4 guten Resultate!')
self.assertEqual(simple_without_format % 1, 'gutes Resultat')
self.assertEqual(simple_without_format % 4, 'guten Resultate')
complex_nonlazy = ngettext_lazy('Hi %(name)s, %(num)d good result', 'Hi %(name)s, %(num)d good results', 4)
complex_deferred = ngettext_lazy(
'Hi %(name)s, %(num)d good result', 'Hi %(name)s, %(num)d good results', 'num'
)
complex_context_nonlazy = npgettext_lazy(
'Greeting', 'Hi %(name)s, %(num)d good result', 'Hi %(name)s, %(num)d good results', 4
)
complex_context_deferred = npgettext_lazy(
'Greeting', 'Hi %(name)s, %(num)d good result', 'Hi %(name)s, %(num)d good results', 'num'
)
with translation.override('de'):
self.assertEqual(complex_nonlazy % {'num': 4, 'name': 'Jim'}, 'Hallo Jim, 4 guten Resultate')
self.assertEqual(complex_deferred % {'name': 'Jim', 'num': 1}, 'Hallo Jim, 1 gutes Resultat')
self.assertEqual(complex_deferred % {'name': 'Jim', 'num': 5}, 'Hallo Jim, 5 guten Resultate')
with self.assertRaisesMessage(KeyError, 'Your dictionary lacks key'):
complex_deferred % {'name': 'Jim'}
self.assertEqual(complex_context_nonlazy % {'num': 4, 'name': 'Jim'}, 'Willkommen Jim, 4 guten Resultate')
self.assertEqual(complex_context_deferred % {'name': 'Jim', 'num': 1}, 'Willkommen Jim, 1 gutes Resultat')
self.assertEqual(complex_context_deferred % {'name': 'Jim', 'num': 5}, 'Willkommen Jim, 5 guten Resultate')
with self.assertRaisesMessage(KeyError, 'Your dictionary lacks key'):
complex_context_deferred % {'name': 'Jim'}
@override_settings(LOCALE_PATHS=extended_locale_paths)
def test_ngettext_lazy_format_style(self):
simple_with_format = ngettext_lazy('{} good result', '{} good results')
simple_context_with_format = npgettext_lazy('Exclamation', '{} good result', '{} good results')
with translation.override('de'):
self.assertEqual(simple_with_format.format(1), '1 gutes Resultat')
self.assertEqual(simple_with_format.format(4), '4 guten Resultate')
self.assertEqual(simple_context_with_format.format(1), '1 gutes Resultat!')
self.assertEqual(simple_context_with_format.format(4), '4 guten Resultate!')
complex_nonlazy = ngettext_lazy('Hi {name}, {num} good result', 'Hi {name}, {num} good results', 4)
complex_deferred = ngettext_lazy(
'Hi {name}, {num} good result', 'Hi {name}, {num} good results', 'num'
)
complex_context_nonlazy = npgettext_lazy(
'Greeting', 'Hi {name}, {num} good result', 'Hi {name}, {num} good results', 4
)
complex_context_deferred = npgettext_lazy(
'Greeting', 'Hi {name}, {num} good result', 'Hi {name}, {num} good results', 'num'
)
with translation.override('de'):
self.assertEqual(complex_nonlazy.format(num=4, name='Jim'), 'Hallo Jim, 4 guten Resultate')
self.assertEqual(complex_deferred.format(name='Jim', num=1), 'Hallo Jim, 1 gutes Resultat')
self.assertEqual(complex_deferred.format(name='Jim', num=5), 'Hallo Jim, 5 guten Resultate')
with self.assertRaisesMessage(KeyError, 'Your dictionary lacks key'):
complex_deferred.format(name='Jim')
self.assertEqual(complex_context_nonlazy.format(num=4, name='Jim'), 'Willkommen Jim, 4 guten Resultate')
self.assertEqual(complex_context_deferred.format(name='Jim', num=1), 'Willkommen Jim, 1 gutes Resultat')
self.assertEqual(complex_context_deferred.format(name='Jim', num=5), 'Willkommen Jim, 5 guten Resultate')
with self.assertRaisesMessage(KeyError, 'Your dictionary lacks key'):
complex_context_deferred.format(name='Jim')
def test_ngettext_lazy_bool(self):
self.assertTrue(ngettext_lazy('%d good result', '%d good results'))
self.assertFalse(ngettext_lazy('', ''))
def test_ngettext_lazy_pickle(self):
s1 = ngettext_lazy('%d good result', '%d good results')
self.assertEqual(s1 % 1, '1 good result')
self.assertEqual(s1 % 8, '8 good results')
s2 = pickle.loads(pickle.dumps(s1))
self.assertEqual(s2 % 1, '1 good result')
self.assertEqual(s2 % 8, '8 good results')
@override_settings(LOCALE_PATHS=extended_locale_paths)
def test_pgettext(self):
trans_real._active = Local()
trans_real._translations = {}
with translation.override('de'):
self.assertEqual(pgettext("unexisting", "May"), "May")
self.assertEqual(pgettext("month name", "May"), "Mai")
self.assertEqual(pgettext("verb", "May"), "Kann")
self.assertEqual(npgettext("search", "%d result", "%d results", 4) % 4, "4 Resultate")
def test_empty_value(self):
"""Empty value must stay empty after being translated (#23196)."""
with translation.override('de'):
self.assertEqual('', gettext(''))
s = mark_safe('')
self.assertEqual(s, gettext(s))
@override_settings(LOCALE_PATHS=extended_locale_paths)
def test_safe_status(self):
"""
Translating a string requiring no auto-escaping with gettext or pgettext
shouldn't change the "safe" status.
"""
trans_real._active = Local()
trans_real._translations = {}
s1 = mark_safe('Password')
s2 = mark_safe('May')
with translation.override('de', deactivate=True):
self.assertIs(type(gettext(s1)), SafeString)
self.assertIs(type(pgettext('month name', s2)), SafeString)
self.assertEqual('aPassword', SafeString('a') + s1)
self.assertEqual('Passworda', s1 + SafeString('a'))
self.assertEqual('Passworda', s1 + mark_safe('a'))
self.assertEqual('aPassword', mark_safe('a') + s1)
self.assertEqual('as', mark_safe('a') + mark_safe('s'))
def test_maclines(self):
"""
Translations on files with Mac or DOS end of lines will be converted
to unix EOF in .po catalogs.
"""
ca_translation = trans_real.translation('ca')
ca_translation._catalog['Mac\nEOF\n'] = 'Catalan Mac\nEOF\n'
ca_translation._catalog['Win\nEOF\n'] = 'Catalan Win\nEOF\n'
with translation.override('ca', deactivate=True):
self.assertEqual('Catalan Mac\nEOF\n', gettext('Mac\rEOF\r'))
self.assertEqual('Catalan Win\nEOF\n', gettext('Win\r\nEOF\r\n'))
def test_to_locale(self):
tests = (
('en', 'en'),
('EN', 'en'),
('en-us', 'en_US'),
('EN-US', 'en_US'),
('en_US', 'en_US'),
# With > 2 characters after the dash.
('sr-latn', 'sr_Latn'),
('sr-LATN', 'sr_Latn'),
('sr_Latn', 'sr_Latn'),
# 3-char language codes.
('ber-MA', 'ber_MA'),
('BER-MA', 'ber_MA'),
('BER_MA', 'ber_MA'),
('ber_MA', 'ber_MA'),
# With private use subtag (x-informal).
('nl-nl-x-informal', 'nl_NL-x-informal'),
('NL-NL-X-INFORMAL', 'nl_NL-x-informal'),
('sr-latn-x-informal', 'sr_Latn-x-informal'),
('SR-LATN-X-INFORMAL', 'sr_Latn-x-informal'),
)
for lang, locale in tests:
with self.subTest(lang=lang):
self.assertEqual(to_locale(lang), locale)
def test_to_language(self):
self.assertEqual(to_language('en_US'), 'en-us')
self.assertEqual(to_language('sr_Lat'), 'sr-lat')
def test_language_bidi(self):
self.assertIs(get_language_bidi(), False)
with translation.override(None):
self.assertIs(get_language_bidi(), False)
def test_language_bidi_null(self):
self.assertIs(trans_null.get_language_bidi(), False)
with override_settings(LANGUAGE_CODE='he'):
self.assertIs(get_language_bidi(), True)
class TranslationLoadingTests(SimpleTestCase):
def setUp(self):
"""Clear translation state."""
self._old_language = get_language()
self._old_translations = trans_real._translations
deactivate()
trans_real._translations = {}
def tearDown(self):
trans_real._translations = self._old_translations
activate(self._old_language)
@override_settings(
USE_I18N=True,
LANGUAGE_CODE='en',
LANGUAGES=[
('en', 'English'),
('en-ca', 'English (Canada)'),
('en-nz', 'English (New Zealand)'),
('en-au', 'English (Australia)'),
],
LOCALE_PATHS=[os.path.join(here, 'loading')],
INSTALLED_APPS=['i18n.loading_app'],
)
def test_translation_loading(self):
"""
"loading_app" does not have translations for all languages provided by
"loading". Catalogs are merged correctly.
"""
tests = [
('en', 'local country person'),
('en_AU', 'aussie'),
('en_NZ', 'kiwi'),
('en_CA', 'canuck'),
]
# Load all relevant translations.
for language, _ in tests:
activate(language)
# Catalogs are merged correctly.
for language, nickname in tests:
with self.subTest(language=language):
activate(language)
self.assertEqual(gettext('local country person'), nickname)
class TranslationThreadSafetyTests(SimpleTestCase):
def setUp(self):
self._old_language = get_language()
self._translations = trans_real._translations
# here we rely on .split() being called inside the _fetch()
# in trans_real.translation()
class sideeffect_str(str):
def split(self, *args, **kwargs):
res = str.split(self, *args, **kwargs)
trans_real._translations['en-YY'] = None
return res
trans_real._translations = {sideeffect_str('en-XX'): None}
def tearDown(self):
trans_real._translations = self._translations
activate(self._old_language)
def test_bug14894_translation_activate_thread_safety(self):
translation_count = len(trans_real._translations)
# May raise RuntimeError if translation.activate() isn't thread-safe.
translation.activate('pl')
# make sure sideeffect_str actually added a new translation
self.assertLess(translation_count, len(trans_real._translations))
class FormattingTests(SimpleTestCase):
def setUp(self):
super().setUp()
self.n = decimal.Decimal('66666.666')
self.f = 99999.999
self.d = datetime.date(2009, 12, 31)
self.dt = datetime.datetime(2009, 12, 31, 20, 50)
self.t = datetime.time(10, 15, 48)
self.long = 10000
self.ctxt = Context({
'n': self.n,
't': self.t,
'd': self.d,
'dt': self.dt,
'f': self.f,
'l': self.long,
})
def test_all_format_strings(self):
all_locales = LANG_INFO.keys()
some_date = datetime.date(2017, 10, 14)
some_datetime = datetime.datetime(2017, 10, 14, 10, 23)
for locale in all_locales:
with self.subTest(locale=locale), translation.override(locale):
self.assertIn('2017', date_format(some_date)) # Uses DATE_FORMAT by default
self.assertIn('23', time_format(some_datetime)) # Uses TIME_FORMAT by default
self.assertIn('2017', date_format(some_datetime, format=get_format('DATETIME_FORMAT')))
self.assertIn('2017', date_format(some_date, format=get_format('YEAR_MONTH_FORMAT')))
self.assertIn('14', date_format(some_date, format=get_format('MONTH_DAY_FORMAT')))
self.assertIn('2017', date_format(some_date, format=get_format('SHORT_DATE_FORMAT')))
self.assertIn('2017', date_format(some_datetime, format=get_format('SHORT_DATETIME_FORMAT')))
def test_locale_independent(self):
"""
Localization of numbers
"""
with self.settings(USE_THOUSAND_SEPARATOR=False):
self.assertEqual('66666.66', nformat(self.n, decimal_sep='.', decimal_pos=2, grouping=3, thousand_sep=','))
self.assertEqual('66666A6', nformat(self.n, decimal_sep='A', decimal_pos=1, grouping=1, thousand_sep='B'))
self.assertEqual('66666', nformat(self.n, decimal_sep='X', decimal_pos=0, grouping=1, thousand_sep='Y'))
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual(
'66,666.66',
nformat(self.n, decimal_sep='.', decimal_pos=2, grouping=3, thousand_sep=',')
)
self.assertEqual(
'6B6B6B6B6A6',
nformat(self.n, decimal_sep='A', decimal_pos=1, grouping=1, thousand_sep='B')
)
self.assertEqual('-66666.6', nformat(-66666.666, decimal_sep='.', decimal_pos=1))
self.assertEqual('-66666.0', nformat(int('-66666'), decimal_sep='.', decimal_pos=1))
self.assertEqual('10000.0', nformat(self.long, decimal_sep='.', decimal_pos=1))
self.assertEqual(
'10,00,00,000.00',
nformat(100000000.00, decimal_sep='.', decimal_pos=2, grouping=(3, 2, 0), thousand_sep=',')
)
self.assertEqual(
'1,0,00,000,0000.00',
nformat(10000000000.00, decimal_sep='.', decimal_pos=2, grouping=(4, 3, 2, 1, 0), thousand_sep=',')
)
self.assertEqual(
'10000,00,000.00',
nformat(1000000000.00, decimal_sep='.', decimal_pos=2, grouping=(3, 2, -1), thousand_sep=',')
)
# This unusual grouping/force_grouping combination may be triggered by the intcomma filter (#17414)
self.assertEqual(
'10000',
nformat(self.long, decimal_sep='.', decimal_pos=0, grouping=0, force_grouping=True)
)
# date filter
self.assertEqual('31.12.2009 в 20:50', Template('{{ dt|date:"d.m.Y в H:i" }}').render(self.ctxt))
self.assertEqual('⌚ 10:15', Template('{{ t|time:"⌚ H:i" }}').render(self.ctxt))
@ignore_warnings(category=RemovedInDjango50Warning)
@override_settings(USE_L10N=False)
def test_l10n_disabled(self):
"""
Catalan locale with format i18n disabled translations will be used,
but not formats
"""
with translation.override('ca', deactivate=True):
self.maxDiff = 3000
self.assertEqual('N j, Y', get_format('DATE_FORMAT'))
self.assertEqual(0, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual('.', get_format('DECIMAL_SEPARATOR'))
self.assertEqual('10:15 a.m.', time_format(self.t))
self.assertEqual('Des. 31, 2009', date_format(self.d))
self.assertEqual('desembre 2009', date_format(self.d, 'YEAR_MONTH_FORMAT'))
self.assertEqual('12/31/2009 8:50 p.m.', date_format(self.dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
self.assertEqual('66666.666', localize(self.n))
self.assertEqual('99999.999', localize(self.f))
self.assertEqual('10000', localize(self.long))
self.assertEqual('Des. 31, 2009', localize(self.d))
self.assertEqual('Des. 31, 2009, 8:50 p.m.', localize(self.dt))
self.assertEqual('66666.666', Template('{{ n }}').render(self.ctxt))
self.assertEqual('99999.999', Template('{{ f }}').render(self.ctxt))
self.assertEqual('Des. 31, 2009', Template('{{ d }}').render(self.ctxt))
self.assertEqual('Des. 31, 2009, 8:50 p.m.', Template('{{ dt }}').render(self.ctxt))
self.assertEqual('66666.67', Template('{{ n|floatformat:"2u" }}').render(self.ctxt))
self.assertEqual('100000.0', Template('{{ f|floatformat:"u" }}').render(self.ctxt))
self.assertEqual(
'66666.67',
Template('{{ n|floatformat:"2gu" }}').render(self.ctxt),
)
self.assertEqual(
'100000.0',
Template('{{ f|floatformat:"ug" }}').render(self.ctxt),
)
self.assertEqual('10:15 a.m.', Template('{{ t|time:"TIME_FORMAT" }}').render(self.ctxt))
self.assertEqual('12/31/2009', Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(self.ctxt))
self.assertEqual(
'12/31/2009 8:50 p.m.', Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(self.ctxt)
)
form = I18nForm({
'decimal_field': '66666,666',
'float_field': '99999,999',
'date_field': '31/12/2009',
'datetime_field': '31/12/2009 20:50',
'time_field': '20:50',
'integer_field': '1.234',
})
self.assertFalse(form.is_valid())
self.assertEqual(['Introdu\xefu un n\xfamero.'], form.errors['float_field'])
self.assertEqual(['Introdu\xefu un n\xfamero.'], form.errors['decimal_field'])
self.assertEqual(['Introdu\xefu una data v\xe0lida.'], form.errors['date_field'])
self.assertEqual(['Introdu\xefu una data/hora v\xe0lides.'], form.errors['datetime_field'])
self.assertEqual(['Introdu\xefu un n\xfamero enter.'], form.errors['integer_field'])
form2 = SelectDateForm({
'date_field_month': '12',
'date_field_day': '31',
'date_field_year': '2009'
})
self.assertTrue(form2.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form2.cleaned_data['date_field'])
self.assertHTMLEqual(
'<select name="mydate_month" id="id_mydate_month">'
'<option value="">---</option>'
'<option value="1">gener</option>'
'<option value="2">febrer</option>'
'<option value="3">mar\xe7</option>'
'<option value="4">abril</option>'
'<option value="5">maig</option>'
'<option value="6">juny</option>'
'<option value="7">juliol</option>'
'<option value="8">agost</option>'
'<option value="9">setembre</option>'
'<option value="10">octubre</option>'
'<option value="11">novembre</option>'
'<option value="12" selected>desembre</option>'
'</select>'
'<select name="mydate_day" id="id_mydate_day">'
'<option value="">---</option>'
'<option value="1">1</option>'
'<option value="2">2</option>'
'<option value="3">3</option>'
'<option value="4">4</option>'
'<option value="5">5</option>'
'<option value="6">6</option>'
'<option value="7">7</option>'
'<option value="8">8</option>'
'<option value="9">9</option>'
'<option value="10">10</option>'
'<option value="11">11</option>'
'<option value="12">12</option>'
'<option value="13">13</option>'
'<option value="14">14</option>'
'<option value="15">15</option>'
'<option value="16">16</option>'
'<option value="17">17</option>'
'<option value="18">18</option>'
'<option value="19">19</option>'
'<option value="20">20</option>'
'<option value="21">21</option>'
'<option value="22">22</option>'
'<option value="23">23</option>'
'<option value="24">24</option>'
'<option value="25">25</option>'
'<option value="26">26</option>'
'<option value="27">27</option>'
'<option value="28">28</option>'
'<option value="29">29</option>'
'<option value="30">30</option>'
'<option value="31" selected>31</option>'
'</select>'
'<select name="mydate_year" id="id_mydate_year">'
'<option value="">---</option>'
'<option value="2009" selected>2009</option>'
'<option value="2010">2010</option>'
'<option value="2011">2011</option>'
'<option value="2012">2012</option>'
'<option value="2013">2013</option>'
'<option value="2014">2014</option>'
'<option value="2015">2015</option>'
'<option value="2016">2016</option>'
'<option value="2017">2017</option>'
'<option value="2018">2018</option>'
'</select>',
forms.SelectDateWidget(years=range(2009, 2019)).render('mydate', datetime.date(2009, 12, 31))
)
# We shouldn't change the behavior of the floatformat filter re:
# thousand separator and grouping when localization is disabled
# even if the USE_THOUSAND_SEPARATOR, NUMBER_GROUPING and
# THOUSAND_SEPARATOR settings are specified.
with self.settings(USE_THOUSAND_SEPARATOR=True, NUMBER_GROUPING=1, THOUSAND_SEPARATOR='!'):
self.assertEqual('66666.67', Template('{{ n|floatformat:"2u" }}').render(self.ctxt))
self.assertEqual('100000.0', Template('{{ f|floatformat:"u" }}').render(self.ctxt))
def test_false_like_locale_formats(self):
"""
The active locale's formats take precedence over the default settings
even if they would be interpreted as False in a conditional test
(e.g. 0 or empty string) (#16938).
"""
with translation.override('fr'):
with self.settings(USE_THOUSAND_SEPARATOR=True, THOUSAND_SEPARATOR='!'):
self.assertEqual('\xa0', get_format('THOUSAND_SEPARATOR'))
# Even a second time (after the format has been cached)...
self.assertEqual('\xa0', get_format('THOUSAND_SEPARATOR'))
with self.settings(FIRST_DAY_OF_WEEK=0):
self.assertEqual(1, get_format('FIRST_DAY_OF_WEEK'))
# Even a second time (after the format has been cached)...
self.assertEqual(1, get_format('FIRST_DAY_OF_WEEK'))
def test_l10n_enabled(self):
self.maxDiff = 3000
# Catalan locale
with translation.override('ca', deactivate=True):
self.assertEqual(r'j \d\e F \d\e Y', get_format('DATE_FORMAT'))
self.assertEqual(1, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual(',', get_format('DECIMAL_SEPARATOR'))
self.assertEqual('10:15', time_format(self.t))
self.assertEqual('31 de desembre de 2009', date_format(self.d))
self.assertEqual('desembre del 2009', date_format(self.d, 'YEAR_MONTH_FORMAT'))
self.assertEqual('31/12/2009 20:50', date_format(self.dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual('66.666,666', localize(self.n))
self.assertEqual('99.999,999', localize(self.f))
self.assertEqual('10.000', localize(self.long))
self.assertEqual('True', localize(True))
with self.settings(USE_THOUSAND_SEPARATOR=False):
self.assertEqual('66666,666', localize(self.n))
self.assertEqual('99999,999', localize(self.f))
self.assertEqual('10000', localize(self.long))
self.assertEqual('31 de desembre de 2009', localize(self.d))
self.assertEqual('31 de desembre de 2009 a les 20:50', localize(self.dt))
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual('66.666,666', Template('{{ n }}').render(self.ctxt))
self.assertEqual('99.999,999', Template('{{ f }}').render(self.ctxt))
self.assertEqual('10.000', Template('{{ l }}').render(self.ctxt))
with self.settings(USE_THOUSAND_SEPARATOR=True):
form3 = I18nForm({
'decimal_field': '66.666,666',
'float_field': '99.999,999',
'date_field': '31/12/2009',
'datetime_field': '31/12/2009 20:50',
'time_field': '20:50',
'integer_field': '1.234',
})
self.assertTrue(form3.is_valid())
self.assertEqual(decimal.Decimal('66666.666'), form3.cleaned_data['decimal_field'])
self.assertEqual(99999.999, form3.cleaned_data['float_field'])
self.assertEqual(datetime.date(2009, 12, 31), form3.cleaned_data['date_field'])
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), form3.cleaned_data['datetime_field'])
self.assertEqual(datetime.time(20, 50), form3.cleaned_data['time_field'])
self.assertEqual(1234, form3.cleaned_data['integer_field'])
with self.settings(USE_THOUSAND_SEPARATOR=False):
self.assertEqual('66666,666', Template('{{ n }}').render(self.ctxt))
self.assertEqual('99999,999', Template('{{ f }}').render(self.ctxt))
self.assertEqual('31 de desembre de 2009', Template('{{ d }}').render(self.ctxt))
self.assertEqual('31 de desembre de 2009 a les 20:50', Template('{{ dt }}').render(self.ctxt))
self.assertEqual('66666,67', Template('{{ n|floatformat:2 }}').render(self.ctxt))
self.assertEqual('100000,0', Template('{{ f|floatformat }}').render(self.ctxt))
self.assertEqual(
'66.666,67',
Template('{{ n|floatformat:"2g" }}').render(self.ctxt),
)
self.assertEqual(
'100.000,0',
Template('{{ f|floatformat:"g" }}').render(self.ctxt),
)
self.assertEqual('10:15', Template('{{ t|time:"TIME_FORMAT" }}').render(self.ctxt))
self.assertEqual('31/12/2009', Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(self.ctxt))
self.assertEqual(
'31/12/2009 20:50',
Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(self.ctxt)
)
self.assertEqual(date_format(datetime.datetime.now(), "DATE_FORMAT"),
Template('{% now "DATE_FORMAT" %}').render(self.ctxt))
with self.settings(USE_THOUSAND_SEPARATOR=False):
form4 = I18nForm({
'decimal_field': '66666,666',
'float_field': '99999,999',
'date_field': '31/12/2009',
'datetime_field': '31/12/2009 20:50',
'time_field': '20:50',
'integer_field': '1234',
})
self.assertTrue(form4.is_valid())
self.assertEqual(decimal.Decimal('66666.666'), form4.cleaned_data['decimal_field'])
self.assertEqual(99999.999, form4.cleaned_data['float_field'])
self.assertEqual(datetime.date(2009, 12, 31), form4.cleaned_data['date_field'])
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), form4.cleaned_data['datetime_field'])
self.assertEqual(datetime.time(20, 50), form4.cleaned_data['time_field'])
self.assertEqual(1234, form4.cleaned_data['integer_field'])
form5 = SelectDateForm({
'date_field_month': '12',
'date_field_day': '31',
'date_field_year': '2009'
})
self.assertTrue(form5.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form5.cleaned_data['date_field'])
self.assertHTMLEqual(
'<select name="mydate_day" id="id_mydate_day">'
'<option value="">---</option>'
'<option value="1">1</option>'
'<option value="2">2</option>'
'<option value="3">3</option>'
'<option value="4">4</option>'
'<option value="5">5</option>'
'<option value="6">6</option>'
'<option value="7">7</option>'
'<option value="8">8</option>'
'<option value="9">9</option>'
'<option value="10">10</option>'
'<option value="11">11</option>'
'<option value="12">12</option>'
'<option value="13">13</option>'
'<option value="14">14</option>'
'<option value="15">15</option>'
'<option value="16">16</option>'
'<option value="17">17</option>'
'<option value="18">18</option>'
'<option value="19">19</option>'
'<option value="20">20</option>'
'<option value="21">21</option>'
'<option value="22">22</option>'
'<option value="23">23</option>'
'<option value="24">24</option>'
'<option value="25">25</option>'
'<option value="26">26</option>'
'<option value="27">27</option>'
'<option value="28">28</option>'
'<option value="29">29</option>'
'<option value="30">30</option>'
'<option value="31" selected>31</option>'
'</select>'
'<select name="mydate_month" id="id_mydate_month">'
'<option value="">---</option>'
'<option value="1">gener</option>'
'<option value="2">febrer</option>'
'<option value="3">mar\xe7</option>'
'<option value="4">abril</option>'
'<option value="5">maig</option>'
'<option value="6">juny</option>'
'<option value="7">juliol</option>'
'<option value="8">agost</option>'
'<option value="9">setembre</option>'
'<option value="10">octubre</option>'
'<option value="11">novembre</option>'
'<option value="12" selected>desembre</option>'
'</select>'
'<select name="mydate_year" id="id_mydate_year">'
'<option value="">---</option>'
'<option value="2009" selected>2009</option>'
'<option value="2010">2010</option>'
'<option value="2011">2011</option>'
'<option value="2012">2012</option>'
'<option value="2013">2013</option>'
'<option value="2014">2014</option>'
'<option value="2015">2015</option>'
'<option value="2016">2016</option>'
'<option value="2017">2017</option>'
'<option value="2018">2018</option>'
'</select>',
forms.SelectDateWidget(years=range(2009, 2019)).render('mydate', datetime.date(2009, 12, 31))
)
# Russian locale (with E as month)
with translation.override('ru', deactivate=True):
self.assertHTMLEqual(
'<select name="mydate_day" id="id_mydate_day">'
'<option value="">---</option>'
'<option value="1">1</option>'
'<option value="2">2</option>'
'<option value="3">3</option>'
'<option value="4">4</option>'
'<option value="5">5</option>'
'<option value="6">6</option>'
'<option value="7">7</option>'
'<option value="8">8</option>'
'<option value="9">9</option>'
'<option value="10">10</option>'
'<option value="11">11</option>'
'<option value="12">12</option>'
'<option value="13">13</option>'
'<option value="14">14</option>'
'<option value="15">15</option>'
'<option value="16">16</option>'
'<option value="17">17</option>'
'<option value="18">18</option>'
'<option value="19">19</option>'
'<option value="20">20</option>'
'<option value="21">21</option>'
'<option value="22">22</option>'
'<option value="23">23</option>'
'<option value="24">24</option>'
'<option value="25">25</option>'
'<option value="26">26</option>'
'<option value="27">27</option>'
'<option value="28">28</option>'
'<option value="29">29</option>'
'<option value="30">30</option>'
'<option value="31" selected>31</option>'
'</select>'
'<select name="mydate_month" id="id_mydate_month">'
'<option value="">---</option>'
'<option value="1">\u042f\u043d\u0432\u0430\u0440\u044c</option>'
'<option value="2">\u0424\u0435\u0432\u0440\u0430\u043b\u044c</option>'
'<option value="3">\u041c\u0430\u0440\u0442</option>'
'<option value="4">\u0410\u043f\u0440\u0435\u043b\u044c</option>'
'<option value="5">\u041c\u0430\u0439</option>'
'<option value="6">\u0418\u044e\u043d\u044c</option>'
'<option value="7">\u0418\u044e\u043b\u044c</option>'
'<option value="8">\u0410\u0432\u0433\u0443\u0441\u0442</option>'
'<option value="9">\u0421\u0435\u043d\u0442\u044f\u0431\u0440\u044c</option>'
'<option value="10">\u041e\u043a\u0442\u044f\u0431\u0440\u044c</option>'
'<option value="11">\u041d\u043e\u044f\u0431\u0440\u044c</option>'
'<option value="12" selected>\u0414\u0435\u043a\u0430\u0431\u0440\u044c</option>'
'</select>'
'<select name="mydate_year" id="id_mydate_year">'
'<option value="">---</option>'
'<option value="2009" selected>2009</option>'
'<option value="2010">2010</option>'
'<option value="2011">2011</option>'
'<option value="2012">2012</option>'
'<option value="2013">2013</option>'
'<option value="2014">2014</option>'
'<option value="2015">2015</option>'
'<option value="2016">2016</option>'
'<option value="2017">2017</option>'
'<option value="2018">2018</option>'
'</select>',
forms.SelectDateWidget(years=range(2009, 2019)).render('mydate', datetime.date(2009, 12, 31))
)
# English locale
with translation.override('en', deactivate=True):
self.assertEqual('N j, Y', get_format('DATE_FORMAT'))
self.assertEqual(0, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual('.', get_format('DECIMAL_SEPARATOR'))
self.assertEqual('Dec. 31, 2009', date_format(self.d))
self.assertEqual('December 2009', date_format(self.d, 'YEAR_MONTH_FORMAT'))
self.assertEqual('12/31/2009 8:50 p.m.', date_format(self.dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual('66,666.666', localize(self.n))
self.assertEqual('99,999.999', localize(self.f))
self.assertEqual('10,000', localize(self.long))
with self.settings(USE_THOUSAND_SEPARATOR=False):
self.assertEqual('66666.666', localize(self.n))
self.assertEqual('99999.999', localize(self.f))
self.assertEqual('10000', localize(self.long))
self.assertEqual('Dec. 31, 2009', localize(self.d))
self.assertEqual('Dec. 31, 2009, 8:50 p.m.', localize(self.dt))
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual('66,666.666', Template('{{ n }}').render(self.ctxt))
self.assertEqual('99,999.999', Template('{{ f }}').render(self.ctxt))
self.assertEqual('10,000', Template('{{ l }}').render(self.ctxt))
with self.settings(USE_THOUSAND_SEPARATOR=False):
self.assertEqual('66666.666', Template('{{ n }}').render(self.ctxt))
self.assertEqual('99999.999', Template('{{ f }}').render(self.ctxt))
self.assertEqual('Dec. 31, 2009', Template('{{ d }}').render(self.ctxt))
self.assertEqual('Dec. 31, 2009, 8:50 p.m.', Template('{{ dt }}').render(self.ctxt))
self.assertEqual('66666.67', Template('{{ n|floatformat:2 }}').render(self.ctxt))
self.assertEqual('100000.0', Template('{{ f|floatformat }}').render(self.ctxt))
self.assertEqual(
'66,666.67',
Template('{{ n|floatformat:"2g" }}').render(self.ctxt),
)
self.assertEqual(
'100,000.0',
Template('{{ f|floatformat:"g" }}').render(self.ctxt),
)
self.assertEqual('12/31/2009', Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(self.ctxt))
self.assertEqual(
'12/31/2009 8:50 p.m.',
Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(self.ctxt)
)
form5 = I18nForm({
'decimal_field': '66666.666',
'float_field': '99999.999',
'date_field': '12/31/2009',
'datetime_field': '12/31/2009 20:50',
'time_field': '20:50',
'integer_field': '1234',
})
self.assertTrue(form5.is_valid())
self.assertEqual(decimal.Decimal('66666.666'), form5.cleaned_data['decimal_field'])
self.assertEqual(99999.999, form5.cleaned_data['float_field'])
self.assertEqual(datetime.date(2009, 12, 31), form5.cleaned_data['date_field'])
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), form5.cleaned_data['datetime_field'])
self.assertEqual(datetime.time(20, 50), form5.cleaned_data['time_field'])
self.assertEqual(1234, form5.cleaned_data['integer_field'])
form6 = SelectDateForm({
'date_field_month': '12',
'date_field_day': '31',
'date_field_year': '2009'
})
self.assertTrue(form6.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form6.cleaned_data['date_field'])
self.assertHTMLEqual(
'<select name="mydate_month" id="id_mydate_month">'
'<option value="">---</option>'
'<option value="1">January</option>'
'<option value="2">February</option>'
'<option value="3">March</option>'
'<option value="4">April</option>'
'<option value="5">May</option>'
'<option value="6">June</option>'
'<option value="7">July</option>'
'<option value="8">August</option>'
'<option value="9">September</option>'
'<option value="10">October</option>'
'<option value="11">November</option>'
'<option value="12" selected>December</option>'
'</select>'
'<select name="mydate_day" id="id_mydate_day">'
'<option value="">---</option>'
'<option value="1">1</option>'
'<option value="2">2</option>'
'<option value="3">3</option>'
'<option value="4">4</option>'
'<option value="5">5</option>'
'<option value="6">6</option>'
'<option value="7">7</option>'
'<option value="8">8</option>'
'<option value="9">9</option>'
'<option value="10">10</option>'
'<option value="11">11</option>'
'<option value="12">12</option>'
'<option value="13">13</option>'
'<option value="14">14</option>'
'<option value="15">15</option>'
'<option value="16">16</option>'
'<option value="17">17</option>'
'<option value="18">18</option>'
'<option value="19">19</option>'
'<option value="20">20</option>'
'<option value="21">21</option>'
'<option value="22">22</option>'
'<option value="23">23</option>'
'<option value="24">24</option>'
'<option value="25">25</option>'
'<option value="26">26</option>'
'<option value="27">27</option>'
'<option value="28">28</option>'
'<option value="29">29</option>'
'<option value="30">30</option>'
'<option value="31" selected>31</option>'
'</select>'
'<select name="mydate_year" id="id_mydate_year">'
'<option value="">---</option>'
'<option value="2009" selected>2009</option>'
'<option value="2010">2010</option>'
'<option value="2011">2011</option>'
'<option value="2012">2012</option>'
'<option value="2013">2013</option>'
'<option value="2014">2014</option>'
'<option value="2015">2015</option>'
'<option value="2016">2016</option>'
'<option value="2017">2017</option>'
'<option value="2018">2018</option>'
'</select>',
forms.SelectDateWidget(years=range(2009, 2019)).render('mydate', datetime.date(2009, 12, 31))
)
def test_sub_locales(self):
"""
Check if sublocales fall back to the main locale
"""
with self.settings(USE_THOUSAND_SEPARATOR=True):
with translation.override('de-at', deactivate=True):
self.assertEqual('66.666,666', Template('{{ n }}').render(self.ctxt))
with translation.override('es-us', deactivate=True):
self.assertEqual('31 de Diciembre de 2009', date_format(self.d))
def test_localized_input(self):
"""
Tests if form input is correctly localized
"""
self.maxDiff = 1200
with translation.override('de-at', deactivate=True):
form6 = CompanyForm({
'name': 'acme',
'date_added': datetime.datetime(2009, 12, 31, 6, 0, 0),
'cents_paid': decimal.Decimal('59.47'),
'products_delivered': 12000,
})
self.assertTrue(form6.is_valid())
self.assertHTMLEqual(
form6.as_ul(),
'<li><label for="id_name">Name:</label>'
'<input id="id_name" type="text" name="name" value="acme" maxlength="50" required></li>'
'<li><label for="id_date_added">Date added:</label>'
'<input type="text" name="date_added" value="31.12.2009 06:00:00" id="id_date_added" required></li>'
'<li><label for="id_cents_paid">Cents paid:</label>'
'<input type="text" name="cents_paid" value="59,47" id="id_cents_paid" required></li>'
'<li><label for="id_products_delivered">Products delivered:</label>'
'<input type="text" name="products_delivered" value="12000" id="id_products_delivered" required>'
'</li>'
)
self.assertEqual(localize_input(datetime.datetime(2009, 12, 31, 6, 0, 0)), '31.12.2009 06:00:00')
self.assertEqual(datetime.datetime(2009, 12, 31, 6, 0, 0), form6.cleaned_data['date_added'])
with self.settings(USE_THOUSAND_SEPARATOR=True):
# Checking for the localized "products_delivered" field
self.assertInHTML(
'<input type="text" name="products_delivered" '
'value="12.000" id="id_products_delivered" required>',
form6.as_ul()
)
def test_localized_input_func(self):
tests = (
(True, 'True'),
(datetime.date(1, 1, 1), '0001-01-01'),
(datetime.datetime(1, 1, 1), '0001-01-01 00:00:00'),
)
with self.settings(USE_THOUSAND_SEPARATOR=True):
for value, expected in tests:
with self.subTest(value=value):
self.assertEqual(localize_input(value), expected)
def test_sanitize_strftime_format(self):
for year in (1, 99, 999, 1000):
dt = datetime.date(year, 1, 1)
for fmt, expected in [
('%C', '%02d' % (year // 100)),
('%F', '%04d-01-01' % year),
('%G', '%04d' % year),
('%Y', '%04d' % year),
]:
with self.subTest(year=year, fmt=fmt):
fmt = sanitize_strftime_format(fmt)
self.assertEqual(dt.strftime(fmt), expected)
def test_sanitize_strftime_format_with_escaped_percent(self):
dt = datetime.date(1, 1, 1)
for fmt, expected in [
('%%C', '%C'),
('%%F', '%F'),
('%%G', '%G'),
('%%Y', '%Y'),
('%%%%C', '%%C'),
('%%%%F', '%%F'),
('%%%%G', '%%G'),
('%%%%Y', '%%Y'),
]:
with self.subTest(fmt=fmt):
fmt = sanitize_strftime_format(fmt)
self.assertEqual(dt.strftime(fmt), expected)
for year in (1, 99, 999, 1000):
dt = datetime.date(year, 1, 1)
for fmt, expected in [
('%%%C', '%%%02d' % (year // 100)),
('%%%F', '%%%04d-01-01' % year),
('%%%G', '%%%04d' % year),
('%%%Y', '%%%04d' % year),
('%%%%%C', '%%%%%02d' % (year // 100)),
('%%%%%F', '%%%%%04d-01-01' % year),
('%%%%%G', '%%%%%04d' % year),
('%%%%%Y', '%%%%%04d' % year),
]:
with self.subTest(year=year, fmt=fmt):
fmt = sanitize_strftime_format(fmt)
self.assertEqual(dt.strftime(fmt), expected)
def test_sanitize_separators(self):
"""
Tests django.utils.formats.sanitize_separators.
"""
# Non-strings are untouched
self.assertEqual(sanitize_separators(123), 123)
with translation.override('ru', deactivate=True):
# Russian locale has non-breaking space (\xa0) as thousand separator
# Usual space is accepted too when sanitizing inputs
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual(sanitize_separators('1\xa0234\xa0567'), '1234567')
self.assertEqual(sanitize_separators('77\xa0777,777'), '77777.777')
self.assertEqual(sanitize_separators('12 345'), '12345')
self.assertEqual(sanitize_separators('77 777,777'), '77777.777')
with translation.override(None): # RemovedInDjango50Warning
with self.settings(USE_THOUSAND_SEPARATOR=True, THOUSAND_SEPARATOR='.'):
self.assertEqual(sanitize_separators('12\xa0345'), '12\xa0345')
with self.settings(USE_THOUSAND_SEPARATOR=True):
with patch_formats(get_language(), THOUSAND_SEPARATOR='.', DECIMAL_SEPARATOR=','):
self.assertEqual(sanitize_separators('10.234'), '10234')
# Suspicion that user entered dot as decimal separator (#22171)
self.assertEqual(sanitize_separators('10.10'), '10.10')
# RemovedInDjango50Warning: When the deprecation ends, remove
# @ignore_warnings and USE_L10N=False. The assertions should remain
# because format-related settings will take precedence over
# locale-dictated formats.
with ignore_warnings(category=RemovedInDjango50Warning):
with self.settings(USE_L10N=False):
with self.settings(DECIMAL_SEPARATOR=','):
self.assertEqual(sanitize_separators('1001,10'), '1001.10')
self.assertEqual(sanitize_separators('1001.10'), '1001.10')
with self.settings(
DECIMAL_SEPARATOR=',',
THOUSAND_SEPARATOR='.',
USE_THOUSAND_SEPARATOR=True,
):
self.assertEqual(sanitize_separators('1.001,10'), '1001.10')
self.assertEqual(sanitize_separators('1001,10'), '1001.10')
self.assertEqual(sanitize_separators('1001.10'), '1001.10')
# Invalid output.
self.assertEqual(sanitize_separators('1,001.10'), '1.001.10')
def test_iter_format_modules(self):
"""
Tests the iter_format_modules function.
"""
# Importing some format modules so that we can compare the returned
# modules with these expected modules
default_mod = import_module('django.conf.locale.de.formats')
test_mod = import_module('i18n.other.locale.de.formats')
test_mod2 = import_module('i18n.other2.locale.de.formats')
with translation.override('de-at', deactivate=True):
# Should return the correct default module when no setting is set
self.assertEqual(list(iter_format_modules('de')), [default_mod])
# When the setting is a string, should return the given module and
# the default module
self.assertEqual(
list(iter_format_modules('de', 'i18n.other.locale')),
[test_mod, default_mod])
# When setting is a list of strings, should return the given
# modules and the default module
self.assertEqual(
list(iter_format_modules('de', ['i18n.other.locale', 'i18n.other2.locale'])),
[test_mod, test_mod2, default_mod])
def test_iter_format_modules_stability(self):
"""
Tests the iter_format_modules function always yields format modules in
a stable and correct order in presence of both base ll and ll_CC formats.
"""
en_format_mod = import_module('django.conf.locale.en.formats')
en_gb_format_mod = import_module('django.conf.locale.en_GB.formats')
self.assertEqual(list(iter_format_modules('en-gb')), [en_gb_format_mod, en_format_mod])
def test_get_format_modules_lang(self):
with translation.override('de', deactivate=True):
self.assertEqual('.', get_format('DECIMAL_SEPARATOR', lang='en'))
def test_localize_templatetag_and_filter(self):
"""
Test the {% localize %} templatetag and the localize/unlocalize filters.
"""
context = Context({'int': 1455, 'float': 3.14, 'date': datetime.date(2016, 12, 31)})
template1 = Template(
'{% load l10n %}{% localize %}{{ int }}/{{ float }}/{{ date }}{% endlocalize %}; '
'{% localize on %}{{ int }}/{{ float }}/{{ date }}{% endlocalize %}'
)
template2 = Template(
'{% load l10n %}{{ int }}/{{ float }}/{{ date }}; '
'{% localize off %}{{ int }}/{{ float }}/{{ date }};{% endlocalize %} '
'{{ int }}/{{ float }}/{{ date }}'
)
template3 = Template(
'{% load l10n %}{{ int }}/{{ float }}/{{ date }}; '
'{{ int|unlocalize }}/{{ float|unlocalize }}/{{ date|unlocalize }}'
)
template4 = Template(
'{% load l10n %}{{ int }}/{{ float }}/{{ date }}; '
'{{ int|localize }}/{{ float|localize }}/{{ date|localize }}'
)
expected_localized = '1.455/3,14/31. Dezember 2016'
expected_unlocalized = '1455/3.14/Dez. 31, 2016'
output1 = '; '.join([expected_localized, expected_localized])
output2 = '; '.join([expected_localized, expected_unlocalized, expected_localized])
output3 = '; '.join([expected_localized, expected_unlocalized])
output4 = '; '.join([expected_unlocalized, expected_localized])
with translation.override('de', deactivate=True):
# RemovedInDjango50Warning: When the deprecation ends, remove
# @ignore_warnings and USE_L10N=False. The assertions should remain
# because format-related settings will take precedence over
# locale-dictated formats.
with ignore_warnings(category=RemovedInDjango50Warning):
with self.settings(
USE_L10N=False,
DATE_FORMAT='N j, Y',
DECIMAL_SEPARATOR='.',
NUMBER_GROUPING=0,
USE_THOUSAND_SEPARATOR=True,
):
self.assertEqual(template1.render(context), output1)
self.assertEqual(template4.render(context), output4)
with self.settings(USE_THOUSAND_SEPARATOR=True):
self.assertEqual(template1.render(context), output1)
self.assertEqual(template2.render(context), output2)
self.assertEqual(template3.render(context), output3)
def test_localized_off_numbers(self):
"""A string representation is returned for unlocalized numbers."""
template = Template(
'{% load l10n %}{% localize off %}'
'{{ int }}/{{ float }}/{{ decimal }}{% endlocalize %}'
)
context = Context(
{'int': 1455, 'float': 3.14, 'decimal': decimal.Decimal('24.1567')}
)
with self.settings(
DECIMAL_SEPARATOR=',',
USE_THOUSAND_SEPARATOR=True,
THOUSAND_SEPARATOR='°',
NUMBER_GROUPING=2,
):
self.assertEqual(template.render(context), '1455/3.14/24.1567')
# RemovedInDjango50Warning.
with ignore_warnings(category=RemovedInDjango50Warning):
with self.settings(
USE_L10N=False,
DECIMAL_SEPARATOR=',',
USE_THOUSAND_SEPARATOR=True,
THOUSAND_SEPARATOR='°',
NUMBER_GROUPING=2,
):
self.assertEqual(template.render(context), '1455/3.14/24.1567')
def test_localized_as_text_as_hidden_input(self):
"""
Tests if form input with 'as_hidden' or 'as_text' is correctly localized. Ticket #18777
"""
self.maxDiff = 1200
with translation.override('de-at', deactivate=True):
template = Template('{% load l10n %}{{ form.date_added }}; {{ form.cents_paid }}')
template_as_text = Template('{% load l10n %}{{ form.date_added.as_text }}; {{ form.cents_paid.as_text }}')
template_as_hidden = Template(
'{% load l10n %}{{ form.date_added.as_hidden }}; {{ form.cents_paid.as_hidden }}'
)
form = CompanyForm({
'name': 'acme',
'date_added': datetime.datetime(2009, 12, 31, 6, 0, 0),
'cents_paid': decimal.Decimal('59.47'),
'products_delivered': 12000,
})
context = Context({'form': form})
self.assertTrue(form.is_valid())
self.assertHTMLEqual(
template.render(context),
'<input id="id_date_added" name="date_added" type="text" value="31.12.2009 06:00:00" required>;'
'<input id="id_cents_paid" name="cents_paid" type="text" value="59,47" required>'
)
self.assertHTMLEqual(
template_as_text.render(context),
'<input id="id_date_added" name="date_added" type="text" value="31.12.2009 06:00:00" required>;'
' <input id="id_cents_paid" name="cents_paid" type="text" value="59,47" required>'
)
self.assertHTMLEqual(
template_as_hidden.render(context),
'<input id="id_date_added" name="date_added" type="hidden" value="31.12.2009 06:00:00">;'
'<input id="id_cents_paid" name="cents_paid" type="hidden" value="59,47">'
)
def test_format_arbitrary_settings(self):
self.assertEqual(get_format('DEBUG'), 'DEBUG')
def test_get_custom_format(self):
reset_format_cache()
with self.settings(FORMAT_MODULE_PATH='i18n.other.locale'):
with translation.override('fr', deactivate=True):
self.assertEqual('d/m/Y CUSTOM', get_format('CUSTOM_DAY_FORMAT'))
def test_admin_javascript_supported_input_formats(self):
"""
The first input format for DATE_INPUT_FORMATS, TIME_INPUT_FORMATS, and
DATETIME_INPUT_FORMATS must not contain %f since that's unsupported by
the admin's time picker widget.
"""
regex = re.compile('%([^BcdHImMpSwxXyY%])')
for language_code, language_name in settings.LANGUAGES:
for format_name in ('DATE_INPUT_FORMATS', 'TIME_INPUT_FORMATS', 'DATETIME_INPUT_FORMATS'):
with self.subTest(language=language_code, format=format_name):
formatter = get_format(format_name, lang=language_code)[0]
self.assertEqual(
regex.findall(formatter), [],
"%s locale's %s uses an unsupported format code." % (language_code, format_name)
)
class MiscTests(SimpleTestCase):
rf = RequestFactory()
@override_settings(LANGUAGE_CODE='de')
def test_english_fallback(self):
"""
With a non-English LANGUAGE_CODE and if the active language is English
or one of its variants, the untranslated string should be returned
(instead of falling back to LANGUAGE_CODE) (See #24413).
"""
self.assertEqual(gettext("Image"), "Bild")
with translation.override('en'):
self.assertEqual(gettext("Image"), "Image")
with translation.override('en-us'):
self.assertEqual(gettext("Image"), "Image")
with translation.override('en-ca'):
self.assertEqual(gettext("Image"), "Image")
def test_parse_spec_http_header(self):
"""
Testing HTTP header parsing. First, we test that we can parse the
values according to the spec (and that we extract all the pieces in
the right order).
"""
tests = [
# Good headers
('de', [('de', 1.0)]),
('en-AU', [('en-au', 1.0)]),
('es-419', [('es-419', 1.0)]),
('*;q=1.00', [('*', 1.0)]),
('en-AU;q=0.123', [('en-au', 0.123)]),
('en-au;q=0.5', [('en-au', 0.5)]),
('en-au;q=1.0', [('en-au', 1.0)]),
('da, en-gb;q=0.25, en;q=0.5', [('da', 1.0), ('en', 0.5), ('en-gb', 0.25)]),
('en-au-xx', [('en-au-xx', 1.0)]),
('de,en-au;q=0.75,en-us;q=0.5,en;q=0.25,es;q=0.125,fa;q=0.125',
[('de', 1.0), ('en-au', 0.75), ('en-us', 0.5), ('en', 0.25), ('es', 0.125), ('fa', 0.125)]),
('*', [('*', 1.0)]),
('de;q=0.', [('de', 0.0)]),
('en; q=1,', [('en', 1.0)]),
('en; q=1.0, * ; q=0.5', [('en', 1.0), ('*', 0.5)]),
# Bad headers
('en-gb;q=1.0000', []),
('en;q=0.1234', []),
('en;q=.2', []),
('abcdefghi-au', []),
('**', []),
('en,,gb', []),
('en-au;q=0.1.0', []),
(('X' * 97) + 'Z,en', []),
('da, en-gb;q=0.8, en;q=0.7,#', []),
('de;q=2.0', []),
('de;q=0.a', []),
('12-345', []),
('', []),
('en;q=1e0', []),
]
for value, expected in tests:
with self.subTest(value=value):
self.assertEqual(trans_real.parse_accept_lang_header(value), tuple(expected))
def test_parse_literal_http_header(self):
"""
Now test that we parse a literal HTTP header correctly.
"""
g = get_language_from_request
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt-br'}
self.assertEqual('pt-br', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt'}
self.assertEqual('pt', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es,de'}
self.assertEqual('es', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es-ar,de'}
self.assertEqual('es-ar', g(r))
# This test assumes there won't be a Django translation to a US
# variation of the Spanish language, a safe assumption. When the
# user sets it as the preferred language, the main 'es'
# translation should be selected instead.
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es-us'}
self.assertEqual(g(r), 'es')
# This tests the following scenario: there isn't a main language (zh)
# translation of Django but there is a translation to variation (zh-hans)
# the user sets zh-hans as the preferred language, it should be selected
# by Django without falling back nor ignoring it.
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-hans,de'}
self.assertEqual(g(r), 'zh-hans')
r.META = {'HTTP_ACCEPT_LANGUAGE': 'NL'}
self.assertEqual('nl', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'fy'}
self.assertEqual('fy', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'ia'}
self.assertEqual('ia', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'sr-latn'}
self.assertEqual('sr-latn', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-hans'}
self.assertEqual('zh-hans', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-hant'}
self.assertEqual('zh-hant', g(r))
@override_settings(
LANGUAGES=[
('en', 'English'),
('zh-hans', 'Simplified Chinese'),
('zh-hant', 'Traditional Chinese'),
]
)
def test_support_for_deprecated_chinese_language_codes(self):
"""
Some browsers (Firefox, IE, etc.) use deprecated language codes. As these
language codes will be removed in Django 1.9, these will be incorrectly
matched. For example zh-tw (traditional) will be interpreted as zh-hans
(simplified), which is wrong. So we should also accept these deprecated
language codes.
refs #18419 -- this is explicitly for browser compatibility
"""
g = get_language_from_request
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-cn,en'}
self.assertEqual(g(r), 'zh-hans')
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-tw,en'}
self.assertEqual(g(r), 'zh-hant')
def test_special_fallback_language(self):
"""
Some languages may have special fallbacks that don't follow the simple
'fr-ca' -> 'fr' logic (notably Chinese codes).
"""
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-my,en'}
self.assertEqual(get_language_from_request(r), 'zh-hans')
def test_subsequent_code_fallback_language(self):
"""
Subsequent language codes should be used when the language code is not
supported.
"""
tests = [
('zh-Hans-CN', 'zh-hans'),
('zh-hans-mo', 'zh-hans'),
('zh-hans-HK', 'zh-hans'),
('zh-Hant-HK', 'zh-hant'),
('zh-hant-tw', 'zh-hant'),
('zh-hant-SG', 'zh-hant'),
]
r = self.rf.get('/')
r.COOKIES = {}
for value, expected in tests:
with self.subTest(value=value):
r.META = {'HTTP_ACCEPT_LANGUAGE': f'{value},en'}
self.assertEqual(get_language_from_request(r), expected)
def test_parse_language_cookie(self):
"""
Now test that we parse language preferences stored in a cookie correctly.
"""
g = get_language_from_request
r = self.rf.get('/')
r.COOKIES = {settings.LANGUAGE_COOKIE_NAME: 'pt-br'}
r.META = {}
self.assertEqual('pt-br', g(r))
r.COOKIES = {settings.LANGUAGE_COOKIE_NAME: 'pt'}
r.META = {}
self.assertEqual('pt', g(r))
r.COOKIES = {settings.LANGUAGE_COOKIE_NAME: 'es'}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'de'}
self.assertEqual('es', g(r))
# This test assumes there won't be a Django translation to a US
# variation of the Spanish language, a safe assumption. When the
# user sets it as the preferred language, the main 'es'
# translation should be selected instead.
r.COOKIES = {settings.LANGUAGE_COOKIE_NAME: 'es-us'}
r.META = {}
self.assertEqual(g(r), 'es')
# This tests the following scenario: there isn't a main language (zh)
# translation of Django but there is a translation to variation (zh-hans)
# the user sets zh-hans as the preferred language, it should be selected
# by Django without falling back nor ignoring it.
r.COOKIES = {settings.LANGUAGE_COOKIE_NAME: 'zh-hans'}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'de'}
self.assertEqual(g(r), 'zh-hans')
@override_settings(
USE_I18N=True,
LANGUAGES=[
('en', 'English'),
('de', 'German'),
('de-at', 'Austrian German'),
('pt-br', 'Portuguese (Brazil)'),
],
)
def test_get_supported_language_variant_real(self):
g = trans_real.get_supported_language_variant
self.assertEqual(g('en'), 'en')
self.assertEqual(g('en-gb'), 'en')
self.assertEqual(g('de'), 'de')
self.assertEqual(g('de-at'), 'de-at')
self.assertEqual(g('de-ch'), 'de')
self.assertEqual(g('pt-br'), 'pt-br')
self.assertEqual(g('pt'), 'pt-br')
self.assertEqual(g('pt-pt'), 'pt-br')
with self.assertRaises(LookupError):
g('pt', strict=True)
with self.assertRaises(LookupError):
g('pt-pt', strict=True)
with self.assertRaises(LookupError):
g('xyz')
with self.assertRaises(LookupError):
g('xy-zz')
def test_get_supported_language_variant_null(self):
g = trans_null.get_supported_language_variant
self.assertEqual(g(settings.LANGUAGE_CODE), settings.LANGUAGE_CODE)
with self.assertRaises(LookupError):
g('pt')
with self.assertRaises(LookupError):
g('de')
with self.assertRaises(LookupError):
g('de-at')
with self.assertRaises(LookupError):
g('de', strict=True)
with self.assertRaises(LookupError):
g('de-at', strict=True)
with self.assertRaises(LookupError):
g('xyz')
@override_settings(
LANGUAGES=[
('en', 'English'),
('en-latn-us', 'Latin English'),
('en-Latn-US', 'BCP 47 case format'),
('de', 'German'),
('de-1996', 'German, orthography of 1996'),
('de-at', 'Austrian German'),
('de-ch-1901', 'German, Swiss variant, traditional orthography'),
('i-mingo', 'Mingo'),
('kl-tunumiit', 'Tunumiisiut'),
('nan-hani-tw', 'Hanji'),
('pl', 'Polish'),
],
)
def test_get_language_from_path_real(self):
g = trans_real.get_language_from_path
tests = [
('/pl/', 'pl'),
('/pl', 'pl'),
('/xyz/', None),
('/en/', 'en'),
('/en-gb/', 'en'),
('/en-latn-us/', 'en-latn-us'),
('/en-Latn-US/', 'en-Latn-US'),
('/de/', 'de'),
('/de-1996/', 'de-1996'),
('/de-at/', 'de-at'),
('/de-ch/', 'de'),
('/de-ch-1901/', 'de-ch-1901'),
('/de-simple-page-test/', None),
('/i-mingo/', 'i-mingo'),
('/kl-tunumiit/', 'kl-tunumiit'),
('/nan-hani-tw/', 'nan-hani-tw'),
]
for path, language in tests:
with self.subTest(path=path):
self.assertEqual(g(path), language)
def test_get_language_from_path_null(self):
g = trans_null.get_language_from_path
self.assertIsNone(g('/pl/'))
self.assertIsNone(g('/pl'))
self.assertIsNone(g('/xyz/'))
def test_cache_resetting(self):
"""
After setting LANGUAGE, the cache should be cleared and languages
previously valid should not be used (#14170).
"""
g = get_language_from_request
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt-br'}
self.assertEqual('pt-br', g(r))
with self.settings(LANGUAGES=[('en', 'English')]):
self.assertNotEqual('pt-br', g(r))
def test_i18n_patterns_returns_list(self):
with override_settings(USE_I18N=False):
self.assertIsInstance(i18n_patterns([]), list)
with override_settings(USE_I18N=True):
self.assertIsInstance(i18n_patterns([]), list)
class ResolutionOrderI18NTests(SimpleTestCase):
def setUp(self):
super().setUp()
activate('de')
def tearDown(self):
deactivate()
super().tearDown()
def assertGettext(self, msgid, msgstr):
result = gettext(msgid)
self.assertIn(
msgstr, result,
"The string '%s' isn't in the translation of '%s'; the actual result is '%s'."
% (msgstr, msgid, result)
)
class AppResolutionOrderI18NTests(ResolutionOrderI18NTests):
@override_settings(LANGUAGE_CODE='de')
def test_app_translation(self):
# Original translation.
self.assertGettext('Date/time', 'Datum/Zeit')
# Different translation.
with self.modify_settings(INSTALLED_APPS={'append': 'i18n.resolution'}):
# Force refreshing translations.
activate('de')
# Doesn't work because it's added later in the list.
self.assertGettext('Date/time', 'Datum/Zeit')
with self.modify_settings(INSTALLED_APPS={'remove': 'django.contrib.admin.apps.SimpleAdminConfig'}):
# Force refreshing translations.
activate('de')
# Unless the original is removed from the list.
self.assertGettext('Date/time', 'Datum/Zeit (APP)')
@override_settings(LOCALE_PATHS=extended_locale_paths)
class LocalePathsResolutionOrderI18NTests(ResolutionOrderI18NTests):
def test_locale_paths_translation(self):
self.assertGettext('Time', 'LOCALE_PATHS')
def test_locale_paths_override_app_translation(self):
with self.settings(INSTALLED_APPS=['i18n.resolution']):
self.assertGettext('Time', 'LOCALE_PATHS')
class DjangoFallbackResolutionOrderI18NTests(ResolutionOrderI18NTests):
def test_django_fallback(self):
self.assertEqual(gettext('Date/time'), 'Datum/Zeit')
@override_settings(INSTALLED_APPS=['i18n.territorial_fallback'])
class TranslationFallbackI18NTests(ResolutionOrderI18NTests):
def test_sparse_territory_catalog(self):
"""
Untranslated strings for territorial language variants use the
translations of the generic language. In this case, the de-de
translation falls back to de.
"""
with translation.override('de-de'):
self.assertGettext('Test 1 (en)', '(de-de)')
self.assertGettext('Test 2 (en)', '(de)')
class TestModels(TestCase):
def test_lazy(self):
tm = TestModel()
tm.save()
def test_safestr(self):
c = Company(cents_paid=12, products_delivered=1)
c.name = SafeString('Iñtërnâtiônàlizætiøn1')
c.save()
class TestLanguageInfo(SimpleTestCase):
def test_localized_language_info(self):
li = get_language_info('de')
self.assertEqual(li['code'], 'de')
self.assertEqual(li['name_local'], 'Deutsch')
self.assertEqual(li['name'], 'German')
self.assertIs(li['bidi'], False)
def test_unknown_language_code(self):
with self.assertRaisesMessage(KeyError, "Unknown language code xx"):
get_language_info('xx')
with translation.override('xx'):
# A language with no translation catalogs should fallback to the
# untranslated string.
self.assertEqual(gettext("Title"), "Title")
def test_unknown_only_country_code(self):
li = get_language_info('de-xx')
self.assertEqual(li['code'], 'de')
self.assertEqual(li['name_local'], 'Deutsch')
self.assertEqual(li['name'], 'German')
self.assertIs(li['bidi'], False)
def test_unknown_language_code_and_country_code(self):
with self.assertRaisesMessage(KeyError, "Unknown language code xx-xx and xx"):
get_language_info('xx-xx')
def test_fallback_language_code(self):
"""
get_language_info return the first fallback language info if the lang_info
struct does not contain the 'name' key.
"""
li = get_language_info('zh-my')
self.assertEqual(li['code'], 'zh-hans')
li = get_language_info('zh-hans')
self.assertEqual(li['code'], 'zh-hans')
@override_settings(
USE_I18N=True,
LANGUAGES=[
('en', 'English'),
('fr', 'French'),
],
MIDDLEWARE=[
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
],
ROOT_URLCONF='i18n.urls',
)
class LocaleMiddlewareTests(TestCase):
def test_streaming_response(self):
# Regression test for #5241
response = self.client.get('/fr/streaming/')
self.assertContains(response, "Oui/Non")
response = self.client.get('/en/streaming/')
self.assertContains(response, "Yes/No")
@override_settings(
USE_I18N=True,
LANGUAGES=[
('en', 'English'),
('de', 'German'),
('fr', 'French'),
],
MIDDLEWARE=[
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
],
ROOT_URLCONF='i18n.urls_default_unprefixed',
LANGUAGE_CODE='en',
)
class UnprefixedDefaultLanguageTests(SimpleTestCase):
def test_default_lang_without_prefix(self):
"""
With i18n_patterns(..., prefix_default_language=False), the default
language (settings.LANGUAGE_CODE) should be accessible without a prefix.
"""
response = self.client.get('/simple/')
self.assertEqual(response.content, b'Yes')
def test_other_lang_with_prefix(self):
response = self.client.get('/fr/simple/')
self.assertEqual(response.content, b'Oui')
def test_unprefixed_language_other_than_accept_language(self):
response = self.client.get('/simple/', HTTP_ACCEPT_LANGUAGE='fr')
self.assertEqual(response.content, b'Yes')
def test_page_with_dash(self):
# A page starting with /de* shouldn't match the 'de' language code.
response = self.client.get('/de-simple-page-test/')
self.assertEqual(response.content, b'Yes')
def test_no_redirect_on_404(self):
"""
A request for a nonexistent URL shouldn't cause a redirect to
/<default_language>/<request_url> when prefix_default_language=False and
/<default_language>/<request_url> has a URL match (#27402).
"""
# A match for /group1/group2/ must exist for this to act as a
# regression test.
response = self.client.get('/group1/group2/')
self.assertEqual(response.status_code, 200)
response = self.client.get('/nonexistent/')
self.assertEqual(response.status_code, 404)
@override_settings(
USE_I18N=True,
LANGUAGES=[
('bg', 'Bulgarian'),
('en-us', 'English'),
('pt-br', 'Portuguese (Brazil)'),
],
MIDDLEWARE=[
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
],
ROOT_URLCONF='i18n.urls'
)
class CountrySpecificLanguageTests(SimpleTestCase):
rf = RequestFactory()
def test_check_for_language(self):
self.assertTrue(check_for_language('en'))
self.assertTrue(check_for_language('en-us'))
self.assertTrue(check_for_language('en-US'))
self.assertFalse(check_for_language('en_US'))
self.assertTrue(check_for_language('be'))
self.assertTrue(check_for_language('be@latin'))
self.assertTrue(check_for_language('sr-RS@latin'))
self.assertTrue(check_for_language('sr-RS@12345'))
self.assertFalse(check_for_language('en-ü'))
self.assertFalse(check_for_language('en\x00'))
self.assertFalse(check_for_language(None))
self.assertFalse(check_for_language('be@ '))
# Specifying encoding is not supported (Django enforces UTF-8)
self.assertFalse(check_for_language('tr-TR.UTF-8'))
self.assertFalse(check_for_language('tr-TR.UTF8'))
self.assertFalse(check_for_language('de-DE.utf-8'))
def test_check_for_language_null(self):
self.assertIs(trans_null.check_for_language('en'), True)
def test_get_language_from_request(self):
# issue 19919
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'en-US,en;q=0.8,bg;q=0.6,ru;q=0.4'}
lang = get_language_from_request(r)
self.assertEqual('en-us', lang)
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'bg-bg,en-US;q=0.8,en;q=0.6,ru;q=0.4'}
lang = get_language_from_request(r)
self.assertEqual('bg', lang)
def test_get_language_from_request_null(self):
lang = trans_null.get_language_from_request(None)
self.assertEqual(lang, 'en')
with override_settings(LANGUAGE_CODE='de'):
lang = trans_null.get_language_from_request(None)
self.assertEqual(lang, 'de')
def test_specific_language_codes(self):
# issue 11915
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt,en-US;q=0.8,en;q=0.6,ru;q=0.4'}
lang = get_language_from_request(r)
self.assertEqual('pt-br', lang)
r = self.rf.get('/')
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt-pt,en-US;q=0.8,en;q=0.6,ru;q=0.4'}
lang = get_language_from_request(r)
self.assertEqual('pt-br', lang)
class TranslationFilesMissing(SimpleTestCase):
def setUp(self):
super().setUp()
self.gettext_find_builtin = gettext_module.find
def tearDown(self):
gettext_module.find = self.gettext_find_builtin
super().tearDown()
def patchGettextFind(self):
gettext_module.find = lambda *args, **kw: None
def test_failure_finding_default_mo_files(self):
"""OSError is raised if the default language is unparseable."""
self.patchGettextFind()
trans_real._translations = {}
with self.assertRaises(OSError):
activate('en')
class NonDjangoLanguageTests(SimpleTestCase):
"""
A language non present in default Django languages can still be
installed/used by a Django project.
"""
@override_settings(
USE_I18N=True,
LANGUAGES=[
('en-us', 'English'),
('xxx', 'Somelanguage'),
],
LANGUAGE_CODE='xxx',
LOCALE_PATHS=[os.path.join(here, 'commands', 'locale')],
)
def test_non_django_language(self):
self.assertEqual(get_language(), 'xxx')
self.assertEqual(gettext("year"), "reay")
@override_settings(USE_I18N=True)
def test_check_for_language(self):
with tempfile.TemporaryDirectory() as app_dir:
os.makedirs(os.path.join(app_dir, 'locale', 'dummy_Lang', 'LC_MESSAGES'))
open(os.path.join(app_dir, 'locale', 'dummy_Lang', 'LC_MESSAGES', 'django.mo'), 'w').close()
app_config = AppConfig('dummy_app', AppModuleStub(__path__=[app_dir]))
with mock.patch('django.apps.apps.get_app_configs', return_value=[app_config]):
self.assertIs(check_for_language('dummy-lang'), True)
@override_settings(
USE_I18N=True,
LANGUAGES=[
('en-us', 'English'),
# xyz language has no locale files
('xyz', 'XYZ'),
],
)
@translation.override('xyz')
def test_plural_non_django_language(self):
self.assertEqual(get_language(), 'xyz')
self.assertEqual(ngettext('year', 'years', 2), 'years')
@override_settings(USE_I18N=True)
class WatchForTranslationChangesTests(SimpleTestCase):
@override_settings(USE_I18N=False)
def test_i18n_disabled(self):
mocked_sender = mock.MagicMock()
watch_for_translation_changes(mocked_sender)
mocked_sender.watch_dir.assert_not_called()
def test_i18n_enabled(self):
mocked_sender = mock.MagicMock()
watch_for_translation_changes(mocked_sender)
self.assertGreater(mocked_sender.watch_dir.call_count, 1)
def test_i18n_locale_paths(self):
mocked_sender = mock.MagicMock()
with tempfile.TemporaryDirectory() as app_dir:
with self.settings(LOCALE_PATHS=[app_dir]):
watch_for_translation_changes(mocked_sender)
mocked_sender.watch_dir.assert_any_call(Path(app_dir), '**/*.mo')
def test_i18n_app_dirs(self):
mocked_sender = mock.MagicMock()
with self.settings(INSTALLED_APPS=['tests.i18n.sampleproject']):
watch_for_translation_changes(mocked_sender)
project_dir = Path(__file__).parent / 'sampleproject' / 'locale'
mocked_sender.watch_dir.assert_any_call(project_dir, '**/*.mo')
def test_i18n_app_dirs_ignore_django_apps(self):
mocked_sender = mock.MagicMock()
with self.settings(INSTALLED_APPS=['django.contrib.admin']):
watch_for_translation_changes(mocked_sender)
mocked_sender.watch_dir.assert_called_once_with(Path('locale'), '**/*.mo')
def test_i18n_local_locale(self):
mocked_sender = mock.MagicMock()
watch_for_translation_changes(mocked_sender)
locale_dir = Path(__file__).parent / 'locale'
mocked_sender.watch_dir.assert_any_call(locale_dir, '**/*.mo')
class TranslationFileChangedTests(SimpleTestCase):
def setUp(self):
self.gettext_translations = gettext_module._translations.copy()
self.trans_real_translations = trans_real._translations.copy()
def tearDown(self):
gettext._translations = self.gettext_translations
trans_real._translations = self.trans_real_translations
def test_ignores_non_mo_files(self):
gettext_module._translations = {'foo': 'bar'}
path = Path('test.py')
self.assertIsNone(translation_file_changed(None, path))
self.assertEqual(gettext_module._translations, {'foo': 'bar'})
def test_resets_cache_with_mo_files(self):
gettext_module._translations = {'foo': 'bar'}
trans_real._translations = {'foo': 'bar'}
trans_real._default = 1
trans_real._active = False
path = Path('test.mo')
self.assertIs(translation_file_changed(None, path), True)
self.assertEqual(gettext_module._translations, {})
self.assertEqual(trans_real._translations, {})
self.assertIsNone(trans_real._default)
self.assertIsInstance(trans_real._active, Local)
class UtilsTests(SimpleTestCase):
def test_round_away_from_one(self):
tests = [
(0, 0),
(0., 0),
(0.25, 0),
(0.5, 0),
(0.75, 0),
(1, 1),
(1., 1),
(1.25, 2),
(1.5, 2),
(1.75, 2),
(-0., 0),
(-0.25, -1),
(-0.5, -1),
(-0.75, -1),
(-1, -1),
(-1., -1),
(-1.25, -2),
(-1.5, -2),
(-1.75, -2),
]
for value, expected in tests:
with self.subTest(value=value):
self.assertEqual(round_away_from_one(value), expected)
|
705747f97d9e4002a36d352bdbc280ef5c67d592dc591c477ee1d9b7a9183e25 | import datetime
from django.contrib import admin
from django.contrib.admin.models import LogEntry
from django.contrib.admin.options import IncorrectLookupParameters
from django.contrib.admin.templatetags.admin_list import pagination
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.admin.views.main import (
ALL_VAR, IS_POPUP_VAR, ORDER_VAR, PAGE_VAR, SEARCH_VAR, TO_FIELD_VAR,
)
from django.contrib.auth.models import User
from django.contrib.contenttypes.models import ContentType
from django.contrib.messages.storage.cookie import CookieStorage
from django.db import connection, models
from django.db.models import F, Field, IntegerField
from django.db.models.functions import Upper
from django.db.models.lookups import Contains, Exact
from django.template import Context, Template, TemplateSyntaxError
from django.test import TestCase, override_settings
from django.test.client import RequestFactory
from django.test.utils import (
CaptureQueriesContext, isolate_apps, register_lookup,
)
from django.urls import reverse
from django.utils import formats
from .admin import (
BandAdmin, ChildAdmin, ChordsBandAdmin, ConcertAdmin,
CustomPaginationAdmin, CustomPaginator, DynamicListDisplayChildAdmin,
DynamicListDisplayLinksChildAdmin, DynamicListFilterChildAdmin,
DynamicSearchFieldsChildAdmin, EmptyValueChildAdmin, EventAdmin,
FilteredChildAdmin, GroupAdmin, InvitationAdmin,
NoListDisplayLinksParentAdmin, ParentAdmin, QuartetAdmin, SwallowAdmin,
site as custom_site,
)
from .models import (
Band, CharPK, Child, ChordsBand, ChordsMusician, Concert, CustomIdUser,
Event, Genre, Group, Invitation, Membership, Musician, OrderedObject,
Parent, Quartet, Swallow, SwallowOneToOne, UnorderedObject,
)
def build_tbody_html(pk, href, extra_fields):
return (
'<tbody><tr>'
'<td class="action-checkbox">'
'<input type="checkbox" name="_selected_action" value="{}" '
'class="action-select"></td>'
'<th class="field-name"><a href="{}">name</a></th>'
'{}</tr></tbody>'
).format(pk, href, extra_fields)
@override_settings(ROOT_URLCONF="admin_changelist.urls")
class ChangeListTests(TestCase):
factory = RequestFactory()
@classmethod
def setUpTestData(cls):
cls.superuser = User.objects.create_superuser(username='super', email='[email protected]', password='xxx')
def _create_superuser(self, username):
return User.objects.create_superuser(username=username, email='[email protected]', password='xxx')
def _mocked_authenticated_request(self, url, user):
request = self.factory.get(url)
request.user = user
return request
def test_repr(self):
m = ChildAdmin(Child, custom_site)
request = self.factory.get('/child/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(repr(cl), '<ChangeList: model=Child model_admin=ChildAdmin>')
def test_specified_ordering_by_f_expression(self):
class OrderedByFBandAdmin(admin.ModelAdmin):
list_display = ['name', 'genres', 'nr_of_members']
ordering = (
F('nr_of_members').desc(nulls_last=True),
Upper(F('name')).asc(),
F('genres').asc(),
)
m = OrderedByFBandAdmin(Band, custom_site)
request = self.factory.get('/band/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.get_ordering_field_columns(), {3: 'desc', 2: 'asc'})
def test_specified_ordering_by_f_expression_without_asc_desc(self):
class OrderedByFBandAdmin(admin.ModelAdmin):
list_display = ['name', 'genres', 'nr_of_members']
ordering = (F('nr_of_members'), Upper('name'), F('genres'))
m = OrderedByFBandAdmin(Band, custom_site)
request = self.factory.get('/band/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.get_ordering_field_columns(), {3: 'asc', 2: 'asc'})
def test_select_related_preserved(self):
"""
Regression test for #10348: ChangeList.get_queryset() shouldn't
overwrite a custom select_related provided by ModelAdmin.get_queryset().
"""
m = ChildAdmin(Child, custom_site)
request = self.factory.get('/child/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'parent': {}})
def test_select_related_preserved_when_multi_valued_in_search_fields(self):
parent = Parent.objects.create(name='Mary')
Child.objects.create(parent=parent, name='Danielle')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={SEARCH_VAR: 'daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 1)
# select_related is preserved.
self.assertEqual(cl.queryset.query.select_related, {'child': {}})
def test_select_related_as_tuple(self):
ia = InvitationAdmin(Invitation, custom_site)
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'player': {}})
def test_select_related_as_empty_tuple(self):
ia = InvitationAdmin(Invitation, custom_site)
ia.list_select_related = ()
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertIs(cl.queryset.query.select_related, False)
def test_get_select_related_custom_method(self):
class GetListSelectRelatedAdmin(admin.ModelAdmin):
list_display = ('band', 'player')
def get_list_select_related(self, request):
return ('band', 'player')
ia = GetListSelectRelatedAdmin(Invitation, custom_site)
request = self.factory.get('/invitation/')
request.user = self.superuser
cl = ia.get_changelist_instance(request)
self.assertEqual(cl.queryset.query.select_related, {'player': {}, 'band': {}})
def test_result_list_empty_changelist_value(self):
"""
Regression test for #14982: EMPTY_CHANGELIST_VALUE should be honored
for relationship fields
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">-</td>')
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_set_empty_value_display_on_admin_site(self):
"""
Empty value display can be set on AdminSite.
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
# Set a new empty display value on AdminSite.
admin.site.empty_value_display = '???'
m = ChildAdmin(Child, admin.site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">???</td>')
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_set_empty_value_display_in_model_admin(self):
"""
Empty value display can be set in ModelAdmin or individual fields.
"""
new_child = Child.objects.create(name='name', parent=None)
request = self.factory.get('/child/')
request.user = self.superuser
m = EmptyValueChildAdmin(Child, admin.site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(
new_child.id,
link,
'<td class="field-age_display">&dagger;</td>'
'<td class="field-age">-empty-</td>'
)
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_html(self):
"""
Inclusion tag result_list generates a table when with default
ModelAdmin settings.
"""
new_parent = Parent.objects.create(name='parent')
new_child = Child.objects.create(name='name', parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.formset = None
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
link = reverse('admin:admin_changelist_child_change', args=(new_child.id,))
row_html = build_tbody_html(new_child.id, link, '<td class="field-parent nowrap">%s</td>' % new_parent)
self.assertNotEqual(table_output.find(row_html), -1, 'Failed to find expected row element: %s' % table_output)
def test_result_list_editable_html(self):
"""
Regression tests for #11791: Inclusion tag result_list generates a
table and this checks that the items are nested within the table
element tags.
Also a regression test for #13599, verifies that hidden fields
when list_editable is enabled are rendered in a div outside the
table.
"""
new_parent = Parent.objects.create(name='parent')
new_child = Child.objects.create(name='name', parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
# Test with list_editable fields
m.list_display = ['id', 'name', 'parent']
m.list_display_links = ['id']
m.list_editable = ['name']
cl = m.get_changelist_instance(request)
FormSet = m.get_changelist_formset(request)
cl.formset = FormSet(queryset=cl.result_list)
template = Template('{% load admin_list %}{% spaceless %}{% result_list cl %}{% endspaceless %}')
context = Context({'cl': cl, 'opts': Child._meta})
table_output = template.render(context)
# make sure that hidden fields are in the correct place
hiddenfields_div = (
'<div class="hiddenfields">'
'<input type="hidden" name="form-0-id" value="%d" id="id_form-0-id">'
'</div>'
) % new_child.id
self.assertInHTML(hiddenfields_div, table_output, msg_prefix='Failed to find hidden fields')
# make sure that list editable fields are rendered in divs correctly
editable_name_field = (
'<input name="form-0-name" value="name" class="vTextField" '
'maxlength="30" type="text" id="id_form-0-name">'
)
self.assertInHTML(
'<td class="field-name">%s</td>' % editable_name_field,
table_output,
msg_prefix='Failed to find "name" list_editable field',
)
def test_result_list_editable(self):
"""
Regression test for #14312: list_editable with pagination
"""
new_parent = Parent.objects.create(name='parent')
for i in range(1, 201):
Child.objects.create(name='name %s' % i, parent=new_parent)
request = self.factory.get('/child/', data={'p': -1}) # Anything outside range
request.user = self.superuser
m = ChildAdmin(Child, custom_site)
# Test with list_editable fields
m.list_display = ['id', 'name', 'parent']
m.list_display_links = ['id']
m.list_editable = ['name']
with self.assertRaises(IncorrectLookupParameters):
m.get_changelist_instance(request)
def test_custom_paginator(self):
new_parent = Parent.objects.create(name='parent')
for i in range(1, 201):
Child.objects.create(name='name %s' % i, parent=new_parent)
request = self.factory.get('/child/')
request.user = self.superuser
m = CustomPaginationAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertIsInstance(cl.paginator, CustomPaginator)
def test_no_duplicates_for_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Basic ManyToMany.
"""
blues = Genre.objects.create(name='Blues')
band = Band.objects.create(name='B.B. King Review', nr_of_members=11)
band.genres.add(blues)
band.genres.add(blues)
m = BandAdmin(Band, custom_site)
request = self.factory.get('/band/', data={'genres': blues.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Group instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_through_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. With an intermediate model.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = GroupAdmin(Group, custom_site)
request = self.factory.get('/group/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Group instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_through_m2m_at_second_level_in_list_filter(self):
"""
When using a ManyToMany in list_filter at the second level behind a
ForeignKey, results shouldn't appear more than once.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = ConcertAdmin(Concert, custom_site)
request = self.factory.get('/concert/', data={'group__members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Concert instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_inherited_m2m_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Model managed in the
admin inherits from the one that defines the relationship.
"""
lead = Musician.objects.create(name='John')
four = Quartet.objects.create(name='The Beatles')
Membership.objects.create(group=four, music=lead, role='lead voice')
Membership.objects.create(group=four, music=lead, role='guitar player')
m = QuartetAdmin(Quartet, custom_site)
request = self.factory.get('/quartet/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one Quartet instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_m2m_to_inherited_in_list_filter(self):
"""
Regression test for #13902: When using a ManyToMany in list_filter,
results shouldn't appear more than once. Target of the relationship
inherits from another.
"""
lead = ChordsMusician.objects.create(name='Player A')
three = ChordsBand.objects.create(name='The Chords Trio')
Invitation.objects.create(band=three, player=lead, instrument='guitar')
Invitation.objects.create(band=three, player=lead, instrument='bass')
m = ChordsBandAdmin(ChordsBand, custom_site)
request = self.factory.get('/chordsband/', data={'members': lead.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.get_results(request)
# There's only one ChordsBand instance
self.assertEqual(cl.result_count, 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_non_unique_related_object_in_list_filter(self):
"""
Regressions tests for #15819: If a field listed in list_filters is a
non-unique related object, results shouldn't appear more than once.
"""
parent = Parent.objects.create(name='Mary')
# Two children with the same name
Child.objects.create(parent=parent, name='Daniel')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={'child__name': 'Daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# Exists() is applied.
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_changelist_search_form_validation(self):
m = ConcertAdmin(Concert, custom_site)
tests = [
({SEARCH_VAR: '\x00'}, 'Null characters are not allowed.'),
({SEARCH_VAR: 'some\x00thing'}, 'Null characters are not allowed.'),
]
for case, error in tests:
with self.subTest(case=case):
request = self.factory.get('/concert/', case)
request.user = self.superuser
request._messages = CookieStorage(request)
m.get_changelist_instance(request)
messages = [m.message for m in request._messages]
self.assertEqual(1, len(messages))
self.assertEqual(error, messages[0])
def test_no_duplicates_for_non_unique_related_object_in_search_fields(self):
"""
Regressions tests for #15819: If a field listed in search_fields
is a non-unique related object, Exists() must be applied.
"""
parent = Parent.objects.create(name='Mary')
Child.objects.create(parent=parent, name='Danielle')
Child.objects.create(parent=parent, name='Daniel')
m = ParentAdmin(Parent, custom_site)
request = self.factory.get('/parent/', data={SEARCH_VAR: 'daniel'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# Exists() is applied.
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_no_duplicates_for_many_to_many_at_second_level_in_search_fields(self):
"""
When using a ManyToMany in search_fields at the second level behind a
ForeignKey, Exists() must be applied and results shouldn't appear more
than once.
"""
lead = Musician.objects.create(name='Vox')
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
Membership.objects.create(group=band, music=lead, role='lead voice')
Membership.objects.create(group=band, music=lead, role='bass player')
m = ConcertAdmin(Concert, custom_site)
request = self.factory.get('/concert/', data={SEARCH_VAR: 'vox'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
# There's only one Concert instance
self.assertEqual(cl.queryset.count(), 1)
# Queryset must be deletable.
self.assertIs(cl.queryset.query.distinct, False)
cl.queryset.delete()
self.assertEqual(cl.queryset.count(), 0)
def test_multiple_search_fields(self):
"""
All rows containing each of the searched words are returned, where each
word must be in one of search_fields.
"""
band_duo = Group.objects.create(name='Duo')
band_hype = Group.objects.create(name='The Hype')
mary = Musician.objects.create(name='Mary Halvorson')
jonathan = Musician.objects.create(name='Jonathan Finlayson')
band_duo.members.set([mary, jonathan])
Concert.objects.create(name='Tiny desk concert', group=band_duo)
Concert.objects.create(name='Woodstock concert', group=band_hype)
# FK lookup.
concert_model_admin = ConcertAdmin(Concert, custom_site)
concert_model_admin.search_fields = ['group__name', 'name']
# Reverse FK lookup.
group_model_admin = GroupAdmin(Group, custom_site)
group_model_admin.search_fields = ['name', 'concert__name', 'members__name']
for search_string, result_count in (
('Duo Concert', 1),
('Tiny Desk Concert', 1),
('Concert', 2),
('Other Concert', 0),
('Duo Woodstock', 0),
):
with self.subTest(search_string=search_string):
# FK lookup.
request = self.factory.get('/concert/', data={SEARCH_VAR: search_string})
request.user = self.superuser
concert_changelist = concert_model_admin.get_changelist_instance(request)
self.assertEqual(concert_changelist.queryset.count(), result_count)
# Reverse FK lookup.
request = self.factory.get('/group/', data={SEARCH_VAR: search_string})
request.user = self.superuser
group_changelist = group_model_admin.get_changelist_instance(request)
self.assertEqual(group_changelist.queryset.count(), result_count)
# Many-to-many lookup.
for search_string, result_count in (
('Finlayson Duo Tiny', 1),
('Finlayson', 1),
('Finlayson Hype', 0),
('Jonathan Finlayson Duo', 1),
('Mary Jonathan Duo', 1),
('Oscar Finlayson Duo', 0),
):
with self.subTest(search_string=search_string):
request = self.factory.get('/group/', data={SEARCH_VAR: search_string})
request.user = self.superuser
group_changelist = group_model_admin.get_changelist_instance(request)
self.assertEqual(group_changelist.queryset.count(), result_count)
def test_pk_in_search_fields(self):
band = Group.objects.create(name='The Hype')
Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__pk']
request = self.factory.get('/concert/', data={SEARCH_VAR: band.pk})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 1)
request = self.factory.get('/concert/', data={SEARCH_VAR: band.pk + 5})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 0)
def test_builtin_lookup_in_search_fields(self):
band = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['name__iexact']
request = self.factory.get('/', data={SEARCH_VAR: 'woodstock'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: 'wood'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_custom_lookup_in_search_fields(self):
band = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=band)
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__name__cc']
with register_lookup(Field, Contains, lookup_name='cc'):
request = self.factory.get('/', data={SEARCH_VAR: 'Hype'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: 'Woodstock'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_spanning_relations_with_custom_lookup_in_search_fields(self):
hype = Group.objects.create(name='The Hype')
concert = Concert.objects.create(name='Woodstock', group=hype)
vox = Musician.objects.create(name='Vox', age=20)
Membership.objects.create(music=vox, group=hype)
# Register a custom lookup on IntegerField to ensure that field
# traversing logic in ModelAdmin.get_search_results() works.
with register_lookup(IntegerField, Exact, lookup_name='exactly'):
m = ConcertAdmin(Concert, custom_site)
m.search_fields = ['group__members__age__exactly']
request = self.factory.get('/', data={SEARCH_VAR: '20'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [concert])
request = self.factory.get('/', data={SEARCH_VAR: '21'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [])
def test_custom_lookup_with_pk_shortcut(self):
self.assertEqual(CharPK._meta.pk.name, 'char_pk') # Not equal to 'pk'.
m = admin.ModelAdmin(CustomIdUser, custom_site)
abc = CharPK.objects.create(char_pk='abc')
abcd = CharPK.objects.create(char_pk='abcd')
m = admin.ModelAdmin(CharPK, custom_site)
m.search_fields = ['pk__exact']
request = self.factory.get('/', data={SEARCH_VAR: 'abc'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [abc])
request = self.factory.get('/', data={SEARCH_VAR: 'abcd'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertCountEqual(cl.queryset, [abcd])
def test_no_exists_for_m2m_in_list_filter_without_params(self):
"""
If a ManyToManyField is in list_filter but isn't in any lookup params,
the changelist's query shouldn't have Exists().
"""
m = BandAdmin(Band, custom_site)
for lookup_params in ({}, {'name': 'test'}):
request = self.factory.get('/band/', lookup_params)
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertNotIn(' EXISTS', str(cl.queryset.query))
# A ManyToManyField in params does have Exists() applied.
request = self.factory.get('/band/', {'genres': '0'})
request.user = self.superuser
cl = m.get_changelist_instance(request)
self.assertIn(' EXISTS', str(cl.queryset.query))
def test_pagination(self):
"""
Regression tests for #12893: Pagination in admins changelist doesn't
use queryset set by modeladmin.
"""
parent = Parent.objects.create(name='anything')
for i in range(1, 31):
Child.objects.create(name='name %s' % i, parent=parent)
Child.objects.create(name='filtered %s' % i, parent=parent)
request = self.factory.get('/child/')
request.user = self.superuser
# Test default queryset
m = ChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 60)
self.assertEqual(cl.paginator.count, 60)
self.assertEqual(list(cl.paginator.page_range), [1, 2, 3, 4, 5, 6])
# Test custom queryset
m = FilteredChildAdmin(Child, custom_site)
cl = m.get_changelist_instance(request)
self.assertEqual(cl.queryset.count(), 30)
self.assertEqual(cl.paginator.count, 30)
self.assertEqual(list(cl.paginator.page_range), [1, 2, 3])
def test_computed_list_display_localization(self):
"""
Regression test for #13196: output of functions should be localized
in the changelist.
"""
self.client.force_login(self.superuser)
event = Event.objects.create(date=datetime.date.today())
response = self.client.get(reverse('admin:admin_changelist_event_changelist'))
self.assertContains(response, formats.localize(event.date))
self.assertNotContains(response, str(event.date))
def test_dynamic_list_display(self):
"""
Regression tests for #14206: dynamic list_display support.
"""
parent = Parent.objects.create(name='parent')
for i in range(10):
Child.objects.create(name='child %s' % i, parent=parent)
user_noparents = self._create_superuser('noparents')
user_parents = self._create_superuser('parents')
# Test with user 'noparents'
m = custom_site._registry[Child]
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertNotContains(response, 'Parent object')
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ['name', 'age'])
self.assertEqual(list_display_links, ['name'])
# Test with user 'parents'
m = DynamicListDisplayChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_parents)
response = m.changelist_view(request)
self.assertContains(response, 'Parent object')
custom_site.unregister(Child)
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ('parent', 'name', 'age'))
self.assertEqual(list_display_links, ['parent'])
# Test default implementation
custom_site.register(Child, ChildAdmin)
m = custom_site._registry[Child]
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertContains(response, 'Parent object')
def test_show_all(self):
parent = Parent.objects.create(name='anything')
for i in range(1, 31):
Child.objects.create(name='name %s' % i, parent=parent)
Child.objects.create(name='filtered %s' % i, parent=parent)
# Add "show all" parameter to request
request = self.factory.get('/child/', data={ALL_VAR: ''})
request.user = self.superuser
# Test valid "show all" request (number of total objects is under max)
m = ChildAdmin(Child, custom_site)
m.list_max_show_all = 200
# 200 is the max we'll pass to ChangeList
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertEqual(len(cl.result_list), 60)
# Test invalid "show all" request (number of total objects over max)
# falls back to paginated pages
m = ChildAdmin(Child, custom_site)
m.list_max_show_all = 30
# 30 is the max we'll pass to ChangeList for this test
cl = m.get_changelist_instance(request)
cl.get_results(request)
self.assertEqual(len(cl.result_list), 10)
def test_dynamic_list_display_links(self):
"""
Regression tests for #16257: dynamic list_display_links support.
"""
parent = Parent.objects.create(name='parent')
for i in range(1, 10):
Child.objects.create(id=i, name='child %s' % i, parent=parent, age=i)
m = DynamicListDisplayLinksChildAdmin(Child, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/child/', superuser)
response = m.changelist_view(request)
for i in range(1, 10):
link = reverse('admin:admin_changelist_child_change', args=(i,))
self.assertContains(response, '<a href="%s">%s</a>' % (link, i))
list_display = m.get_list_display(request)
list_display_links = m.get_list_display_links(request, list_display)
self.assertEqual(list_display, ('parent', 'name', 'age'))
self.assertEqual(list_display_links, ['age'])
def test_no_list_display_links(self):
"""#15185 -- Allow no links from the 'change list' view grid."""
p = Parent.objects.create(name='parent')
m = NoListDisplayLinksParentAdmin(Parent, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/parent/', superuser)
response = m.changelist_view(request)
link = reverse('admin:admin_changelist_parent_change', args=(p.pk,))
self.assertNotContains(response, '<a href="%s">' % link)
def test_clear_all_filters_link(self):
self.client.force_login(self.superuser)
url = reverse('admin:auth_user_changelist')
response = self.client.get(url)
self.assertNotContains(response, '✖ Clear all filters')
link = '<a href="%s">✖ Clear all filters</a>'
for data, href in (
({'is_staff__exact': '0'}, '?'),
(
{'is_staff__exact': '0', 'username__startswith': 'test'},
'?username__startswith=test',
),
(
{'is_staff__exact': '0', SEARCH_VAR: 'test'},
'?%s=test' % SEARCH_VAR,
),
(
{'is_staff__exact': '0', IS_POPUP_VAR: 'id'},
'?%s=id' % IS_POPUP_VAR,
),
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertContains(response, link % href)
def test_clear_all_filters_link_callable_filter(self):
self.client.force_login(self.superuser)
url = reverse('admin:admin_changelist_band_changelist')
response = self.client.get(url)
self.assertNotContains(response, '✖ Clear all filters')
link = '<a href="%s">✖ Clear all filters</a>'
for data, href in (
({'nr_of_members_partition': '5'}, '?'),
(
{'nr_of_members_partition': 'more', 'name__startswith': 'test'},
'?name__startswith=test',
),
(
{'nr_of_members_partition': '5', IS_POPUP_VAR: 'id'},
'?%s=id' % IS_POPUP_VAR,
),
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertContains(response, link % href)
def test_no_clear_all_filters_link(self):
self.client.force_login(self.superuser)
url = reverse('admin:auth_user_changelist')
link = '>✖ Clear all filters</a>'
for data in (
{SEARCH_VAR: 'test'},
{ORDER_VAR: '-1'},
{TO_FIELD_VAR: 'id'},
{PAGE_VAR: '1'},
{IS_POPUP_VAR: '1'},
{'username__startswith': 'test'},
):
with self.subTest(data=data):
response = self.client.get(url, data=data)
self.assertNotContains(response, link)
def test_tuple_list_display(self):
swallow = Swallow.objects.create(origin='Africa', load='12.34', speed='22.2')
swallow2 = Swallow.objects.create(origin='Africa', load='12.34', speed='22.2')
swallow_o2o = SwallowOneToOne.objects.create(swallow=swallow2)
model_admin = SwallowAdmin(Swallow, custom_site)
superuser = self._create_superuser('superuser')
request = self._mocked_authenticated_request('/swallow/', superuser)
response = model_admin.changelist_view(request)
# just want to ensure it doesn't blow up during rendering
self.assertContains(response, str(swallow.origin))
self.assertContains(response, str(swallow.load))
self.assertContains(response, str(swallow.speed))
# Reverse one-to-one relations should work.
self.assertContains(response, '<td class="field-swallowonetoone">-</td>')
self.assertContains(response, '<td class="field-swallowonetoone">%s</td>' % swallow_o2o)
def test_multiuser_edit(self):
"""
Simultaneous edits of list_editable fields on the changelist by
different users must not result in one user's edits creating a new
object instead of modifying the correct existing object (#11313).
"""
# To replicate this issue, simulate the following steps:
# 1. User1 opens an admin changelist with list_editable fields.
# 2. User2 edits object "Foo" such that it moves to another page in
# the pagination order and saves.
# 3. User1 edits object "Foo" and saves.
# 4. The edit made by User1 does not get applied to object "Foo" but
# instead is used to create a new object (bug).
# For this test, order the changelist by the 'speed' attribute and
# display 3 objects per page (SwallowAdmin.list_per_page = 3).
# Setup the test to reflect the DB state after step 2 where User2 has
# edited the first swallow object's speed from '4' to '1'.
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
b = Swallow.objects.create(origin='Swallow B', load=2, speed=2)
c = Swallow.objects.create(origin='Swallow C', load=5, speed=5)
d = Swallow.objects.create(origin='Swallow D', load=9, speed=9)
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
# Send the POST from User1 for step 3. It's still using the changelist
# ordering from before User2's edits in step 2.
data = {
'form-TOTAL_FORMS': '3',
'form-INITIAL_FORMS': '3',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(d.pk),
'form-1-uuid': str(c.pk),
'form-2-uuid': str(a.pk),
'form-0-load': '9.0',
'form-0-speed': '9.0',
'form-1-load': '5.0',
'form-1-speed': '5.0',
'form-2-load': '5.0',
'form-2-speed': '4.0',
'_save': 'Save',
}
response = self.client.post(changelist_url, data, follow=True, extra={'o': '-2'})
# The object User1 edited in step 3 is displayed on the changelist and
# has the correct edits applied.
self.assertContains(response, '1 swallow was changed successfully.')
self.assertContains(response, a.origin)
a.refresh_from_db()
self.assertEqual(a.load, float(data['form-2-load']))
self.assertEqual(a.speed, float(data['form-2-speed']))
b.refresh_from_db()
self.assertEqual(b.load, 2)
self.assertEqual(b.speed, 2)
c.refresh_from_db()
self.assertEqual(c.load, float(data['form-1-load']))
self.assertEqual(c.speed, float(data['form-1-speed']))
d.refresh_from_db()
self.assertEqual(d.load, float(data['form-0-load']))
self.assertEqual(d.speed, float(data['form-0-speed']))
# No new swallows were created.
self.assertEqual(len(Swallow.objects.all()), 4)
def test_get_edited_object_ids(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
b = Swallow.objects.create(origin='Swallow B', load=2, speed=2)
c = Swallow.objects.create(origin='Swallow C', load=5, speed=5)
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
data = {
'form-TOTAL_FORMS': '3',
'form-INITIAL_FORMS': '3',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-1-uuid': str(b.pk),
'form-2-uuid': str(c.pk),
'form-0-load': '9.0',
'form-0-speed': '9.0',
'form-1-load': '5.0',
'form-1-speed': '5.0',
'form-2-load': '5.0',
'form-2-speed': '4.0',
'_save': 'Save',
}
request = self.factory.post(changelist_url, data=data)
pks = m._get_edited_object_pks(request, prefix='form')
self.assertEqual(sorted(pks), sorted([str(a.pk), str(b.pk), str(c.pk)]))
def test_get_list_editable_queryset(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '2',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form')
self.assertEqual(queryset.count(), 1)
data['form-0-uuid'] = 'INVALD_PRIMARY_KEY'
# The unfiltered queryset is returned if there's invalid data.
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form')
self.assertEqual(queryset.count(), 2)
def test_get_list_editable_queryset_with_regex_chars_in_prefix(self):
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form$-TOTAL_FORMS': '2',
'form$-INITIAL_FORMS': '2',
'form$-MIN_NUM_FORMS': '0',
'form$-MAX_NUM_FORMS': '1000',
'form$-0-uuid': str(a.pk),
'form$-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
m = SwallowAdmin(Swallow, custom_site)
request = self.factory.post(changelist_url, data=data)
queryset = m._get_list_editable_queryset(request, prefix='form$')
self.assertEqual(queryset.count(), 1)
def test_changelist_view_list_editable_changed_objects_uses_filter(self):
"""list_editable edits use a filtered queryset to limit memory usage."""
a = Swallow.objects.create(origin='Swallow A', load=4, speed=1)
Swallow.objects.create(origin='Swallow B', load=2, speed=2)
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '2',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '1000',
'form-0-uuid': str(a.pk),
'form-0-load': '10',
'_save': 'Save',
}
superuser = self._create_superuser('superuser')
self.client.force_login(superuser)
changelist_url = reverse('admin:admin_changelist_swallow_changelist')
with CaptureQueriesContext(connection) as context:
response = self.client.post(changelist_url, data=data)
self.assertEqual(response.status_code, 200)
self.assertIn('WHERE', context.captured_queries[4]['sql'])
self.assertIn('IN', context.captured_queries[4]['sql'])
# Check only the first few characters since the UUID may have dashes.
self.assertIn(str(a.pk)[:8], context.captured_queries[4]['sql'])
def test_deterministic_order_for_unordered_model(self):
"""
The primary key is used in the ordering of the changelist's results to
guarantee a deterministic order, even when the model doesn't have any
default ordering defined (#17198).
"""
superuser = self._create_superuser('superuser')
for counter in range(1, 51):
UnorderedObject.objects.create(id=counter, bool=True)
class UnorderedObjectAdmin(admin.ModelAdmin):
list_per_page = 10
def check_results_order(ascending=False):
custom_site.register(UnorderedObject, UnorderedObjectAdmin)
model_admin = UnorderedObjectAdmin(UnorderedObject, custom_site)
counter = 0 if ascending else 51
for page in range(1, 6):
request = self._mocked_authenticated_request('/unorderedobject/?p=%s' % page, superuser)
response = model_admin.changelist_view(request)
for result in response.context_data['cl'].result_list:
counter += 1 if ascending else -1
self.assertEqual(result.id, counter)
custom_site.unregister(UnorderedObject)
# When no order is defined at all, everything is ordered by '-pk'.
check_results_order()
# When an order field is defined but multiple records have the same
# value for that field, make sure everything gets ordered by -pk as well.
UnorderedObjectAdmin.ordering = ['bool']
check_results_order()
# When order fields are defined, including the pk itself, use them.
UnorderedObjectAdmin.ordering = ['bool', '-pk']
check_results_order()
UnorderedObjectAdmin.ordering = ['bool', 'pk']
check_results_order(ascending=True)
UnorderedObjectAdmin.ordering = ['-id', 'bool']
check_results_order()
UnorderedObjectAdmin.ordering = ['id', 'bool']
check_results_order(ascending=True)
def test_deterministic_order_for_model_ordered_by_its_manager(self):
"""
The primary key is used in the ordering of the changelist's results to
guarantee a deterministic order, even when the model has a manager that
defines a default ordering (#17198).
"""
superuser = self._create_superuser('superuser')
for counter in range(1, 51):
OrderedObject.objects.create(id=counter, bool=True, number=counter)
class OrderedObjectAdmin(admin.ModelAdmin):
list_per_page = 10
def check_results_order(ascending=False):
custom_site.register(OrderedObject, OrderedObjectAdmin)
model_admin = OrderedObjectAdmin(OrderedObject, custom_site)
counter = 0 if ascending else 51
for page in range(1, 6):
request = self._mocked_authenticated_request('/orderedobject/?p=%s' % page, superuser)
response = model_admin.changelist_view(request)
for result in response.context_data['cl'].result_list:
counter += 1 if ascending else -1
self.assertEqual(result.id, counter)
custom_site.unregister(OrderedObject)
# When no order is defined at all, use the model's default ordering (i.e. 'number')
check_results_order(ascending=True)
# When an order field is defined but multiple records have the same
# value for that field, make sure everything gets ordered by -pk as well.
OrderedObjectAdmin.ordering = ['bool']
check_results_order()
# When order fields are defined, including the pk itself, use them.
OrderedObjectAdmin.ordering = ['bool', '-pk']
check_results_order()
OrderedObjectAdmin.ordering = ['bool', 'pk']
check_results_order(ascending=True)
OrderedObjectAdmin.ordering = ['-id', 'bool']
check_results_order()
OrderedObjectAdmin.ordering = ['id', 'bool']
check_results_order(ascending=True)
@isolate_apps('admin_changelist')
def test_total_ordering_optimization(self):
class Related(models.Model):
unique_field = models.BooleanField(unique=True)
class Meta:
ordering = ('unique_field',)
class Model(models.Model):
unique_field = models.BooleanField(unique=True)
unique_nullable_field = models.BooleanField(unique=True, null=True)
related = models.ForeignKey(Related, models.CASCADE)
other_related = models.ForeignKey(Related, models.CASCADE)
related_unique = models.OneToOneField(Related, models.CASCADE)
field = models.BooleanField()
other_field = models.BooleanField()
null_field = models.BooleanField(null=True)
class Meta:
unique_together = {
('field', 'other_field'),
('field', 'null_field'),
('related', 'other_related_id'),
}
class ModelAdmin(admin.ModelAdmin):
def get_queryset(self, request):
return Model.objects.none()
request = self._mocked_authenticated_request('/', self.superuser)
site = admin.AdminSite(name='admin')
model_admin = ModelAdmin(Model, site)
change_list = model_admin.get_changelist_instance(request)
tests = (
([], ['-pk']),
# Unique non-nullable field.
(['unique_field'], ['unique_field']),
(['-unique_field'], ['-unique_field']),
# Unique nullable field.
(['unique_nullable_field'], ['unique_nullable_field', '-pk']),
# Field.
(['field'], ['field', '-pk']),
# Related field introspection is not implemented.
(['related__unique_field'], ['related__unique_field', '-pk']),
# Related attname unique.
(['related_unique_id'], ['related_unique_id']),
# Related ordering introspection is not implemented.
(['related_unique'], ['related_unique', '-pk']),
# Composite unique.
(['field', '-other_field'], ['field', '-other_field']),
# Composite unique nullable.
(['-field', 'null_field'], ['-field', 'null_field', '-pk']),
# Composite unique and nullable.
(['-field', 'null_field', 'other_field'], ['-field', 'null_field', 'other_field']),
# Composite unique attnames.
(['related_id', '-other_related_id'], ['related_id', '-other_related_id']),
# Composite unique names.
(['related', '-other_related_id'], ['related', '-other_related_id', '-pk']),
)
# F() objects composite unique.
total_ordering = [F('field'), F('other_field').desc(nulls_last=True)]
# F() objects composite unique nullable.
non_total_ordering = [F('field'), F('null_field').desc(nulls_last=True)]
tests += (
(total_ordering, total_ordering),
(non_total_ordering, non_total_ordering + ['-pk']),
)
for ordering, expected in tests:
with self.subTest(ordering=ordering):
self.assertEqual(change_list._get_deterministic_ordering(ordering), expected)
@isolate_apps('admin_changelist')
def test_total_ordering_optimization_meta_constraints(self):
class Related(models.Model):
unique_field = models.BooleanField(unique=True)
class Meta:
ordering = ('unique_field',)
class Model(models.Model):
field_1 = models.BooleanField()
field_2 = models.BooleanField()
field_3 = models.BooleanField()
field_4 = models.BooleanField()
field_5 = models.BooleanField()
field_6 = models.BooleanField()
nullable_1 = models.BooleanField(null=True)
nullable_2 = models.BooleanField(null=True)
related_1 = models.ForeignKey(Related, models.CASCADE)
related_2 = models.ForeignKey(Related, models.CASCADE)
related_3 = models.ForeignKey(Related, models.CASCADE)
related_4 = models.ForeignKey(Related, models.CASCADE)
class Meta:
constraints = [
*[
models.UniqueConstraint(fields=fields, name=''.join(fields))
for fields in (
['field_1'],
['nullable_1'],
['related_1'],
['related_2_id'],
['field_2', 'field_3'],
['field_2', 'nullable_2'],
['field_2', 'related_3'],
['field_3', 'related_4_id'],
)
],
models.CheckConstraint(check=models.Q(id__gt=0), name='foo'),
models.UniqueConstraint(
fields=['field_5'],
condition=models.Q(id__gt=10),
name='total_ordering_1',
),
models.UniqueConstraint(
fields=['field_6'],
condition=models.Q(),
name='total_ordering',
),
]
class ModelAdmin(admin.ModelAdmin):
def get_queryset(self, request):
return Model.objects.none()
request = self._mocked_authenticated_request('/', self.superuser)
site = admin.AdminSite(name='admin')
model_admin = ModelAdmin(Model, site)
change_list = model_admin.get_changelist_instance(request)
tests = (
# Unique non-nullable field.
(['field_1'], ['field_1']),
# Unique nullable field.
(['nullable_1'], ['nullable_1', '-pk']),
# Related attname unique.
(['related_1_id'], ['related_1_id']),
(['related_2_id'], ['related_2_id']),
# Related ordering introspection is not implemented.
(['related_1'], ['related_1', '-pk']),
# Composite unique.
(['-field_2', 'field_3'], ['-field_2', 'field_3']),
# Composite unique nullable.
(['field_2', '-nullable_2'], ['field_2', '-nullable_2', '-pk']),
# Composite unique and nullable.
(
['field_2', '-nullable_2', 'field_3'],
['field_2', '-nullable_2', 'field_3'],
),
# Composite field and related field name.
(['field_2', '-related_3'], ['field_2', '-related_3', '-pk']),
(['field_3', 'related_4'], ['field_3', 'related_4', '-pk']),
# Composite field and related field attname.
(['field_2', 'related_3_id'], ['field_2', 'related_3_id']),
(['field_3', '-related_4_id'], ['field_3', '-related_4_id']),
# Partial unique constraint is ignored.
(['field_5'], ['field_5', '-pk']),
# Unique constraint with an empty condition.
(['field_6'], ['field_6']),
)
for ordering, expected in tests:
with self.subTest(ordering=ordering):
self.assertEqual(change_list._get_deterministic_ordering(ordering), expected)
def test_dynamic_list_filter(self):
"""
Regression tests for ticket #17646: dynamic list_filter support.
"""
parent = Parent.objects.create(name='parent')
for i in range(10):
Child.objects.create(name='child %s' % i, parent=parent)
user_noparents = self._create_superuser('noparents')
user_parents = self._create_superuser('parents')
# Test with user 'noparents'
m = DynamicListFilterChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_noparents)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].list_filter, ['name', 'age'])
# Test with user 'parents'
m = DynamicListFilterChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', user_parents)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].list_filter, ('parent', 'name', 'age'))
def test_dynamic_search_fields(self):
child = self._create_superuser('child')
m = DynamicSearchFieldsChildAdmin(Child, custom_site)
request = self._mocked_authenticated_request('/child/', child)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].search_fields, ('name', 'age'))
def test_pagination_page_range(self):
"""
Regression tests for ticket #15653: ensure the number of pages
generated for changelist views are correct.
"""
# instantiating and setting up ChangeList object
m = GroupAdmin(Group, custom_site)
request = self.factory.get('/group/')
request.user = self.superuser
cl = m.get_changelist_instance(request)
cl.list_per_page = 10
ELLIPSIS = cl.paginator.ELLIPSIS
for number, pages, expected in [
(1, 1, []),
(1, 2, [1, 2]),
(6, 11, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]),
(6, 12, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
(6, 13, [1, 2, 3, 4, 5, 6, 7, 8, 9, ELLIPSIS, 12, 13]),
(7, 12, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
(7, 13, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]),
(7, 14, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ELLIPSIS, 13, 14]),
(8, 13, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, 12, 13]),
(8, 14, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]),
(8, 15, [1, 2, ELLIPSIS, 5, 6, 7, 8, 9, 10, 11, ELLIPSIS, 14, 15]),
]:
with self.subTest(number=number, pages=pages):
# assuming exactly `pages * cl.list_per_page` objects
Group.objects.all().delete()
for i in range(pages * cl.list_per_page):
Group.objects.create(name='test band')
# setting page number and calculating page range
cl.page_num = number
cl.get_results(request)
self.assertEqual(list(pagination(cl)['page_range']), expected)
def test_object_tools_displayed_no_add_permission(self):
"""
When ModelAdmin.has_add_permission() returns False, the object-tools
block is still shown.
"""
superuser = self._create_superuser('superuser')
m = EventAdmin(Event, custom_site)
request = self._mocked_authenticated_request('/event/', superuser)
self.assertFalse(m.has_add_permission(request))
response = m.changelist_view(request)
self.assertIn('<ul class="object-tools">', response.rendered_content)
# The "Add" button inside the object-tools shouldn't appear.
self.assertNotIn('Add ', response.rendered_content)
def test_search_help_text(self):
superuser = self._create_superuser('superuser')
m = BandAdmin(Band, custom_site)
# search_fields without search_help_text.
m.search_fields = ['name']
request = self._mocked_authenticated_request('/band/', superuser)
response = m.changelist_view(request)
self.assertIsNone(response.context_data['cl'].search_help_text)
self.assertNotContains(response, '<div class="help">')
# search_fields with search_help_text.
m.search_help_text = 'Search help text'
request = self._mocked_authenticated_request('/band/', superuser)
response = m.changelist_view(request)
self.assertEqual(response.context_data['cl'].search_help_text, 'Search help text')
self.assertContains(response, '<div class="help">Search help text</div>')
class GetAdminLogTests(TestCase):
def test_custom_user_pk_not_named_id(self):
"""
{% get_admin_log %} works if the user model's primary key isn't named
'id'.
"""
context = Context({'user': CustomIdUser()})
template = Template('{% load log %}{% get_admin_log 10 as admin_log for_user user %}')
# This template tag just logs.
self.assertEqual(template.render(context), '')
def test_no_user(self):
"""{% get_admin_log %} works without specifying a user."""
user = User(username='jondoe', password='secret', email='[email protected]')
user.save()
ct = ContentType.objects.get_for_model(User)
LogEntry.objects.log_action(user.pk, ct.pk, user.pk, repr(user), 1)
t = Template(
'{% load log %}'
'{% get_admin_log 100 as admin_log %}'
'{% for entry in admin_log %}'
'{{ entry|safe }}'
'{% endfor %}'
)
self.assertEqual(t.render(Context({})), 'Added “<User: jondoe>”.')
def test_missing_args(self):
msg = "'get_admin_log' statements require two arguments"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 as %}')
def test_non_integer_limit(self):
msg = "First argument to 'get_admin_log' must be an integer"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log "10" as admin_log for_user user %}')
def test_without_as(self):
msg = "Second argument to 'get_admin_log' must be 'as'"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 ad admin_log for_user user %}')
def test_without_for_user(self):
msg = "Fourth argument to 'get_admin_log' must be 'for_user'"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
Template('{% load log %}{% get_admin_log 10 as admin_log foruser user %}')
@override_settings(ROOT_URLCONF='admin_changelist.urls')
class SeleniumTests(AdminSeleniumTestCase):
available_apps = ['admin_changelist'] + AdminSeleniumTestCase.available_apps
def setUp(self):
User.objects.create_superuser(username='super', password='secret', email=None)
def test_add_row_selection(self):
"""
The status line for selected rows gets updated correctly (#22038).
"""
from selenium.webdriver.common.by import By
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:auth_user_changelist'))
form_id = '#changelist-form'
# Test amount of rows in the Changelist
rows = self.selenium.find_elements(
By.CSS_SELECTOR,
'%s #result_list tbody tr' % form_id
)
self.assertEqual(len(rows), 1)
row = rows[0]
selection_indicator = self.selenium.find_element(
By.CSS_SELECTOR,
'%s .action-counter' % form_id
)
all_selector = self.selenium.find_element(By.ID, 'action-toggle')
row_selector = self.selenium.find_element(
By.CSS_SELECTOR,
'%s #result_list tbody tr:first-child .action-select' % form_id
)
# Test current selection
self.assertEqual(selection_indicator.text, "0 of 1 selected")
self.assertIs(all_selector.get_property('checked'), False)
self.assertEqual(row.get_attribute('class'), '')
# Select a row and check again
row_selector.click()
self.assertEqual(selection_indicator.text, "1 of 1 selected")
self.assertIs(all_selector.get_property('checked'), True)
self.assertEqual(row.get_attribute('class'), 'selected')
# Deselect a row and check again
row_selector.click()
self.assertEqual(selection_indicator.text, "0 of 1 selected")
self.assertIs(all_selector.get_property('checked'), False)
self.assertEqual(row.get_attribute('class'), '')
def test_modifier_allows_multiple_section(self):
"""
Selecting a row and then selecting another row whilst holding shift
should select all rows in-between.
"""
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
Parent.objects.bulk_create([Parent(name='parent%d' % i) for i in range(5)])
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
checkboxes = self.selenium.find_elements(By.CSS_SELECTOR, 'tr input.action-select')
self.assertEqual(len(checkboxes), 5)
for c in checkboxes:
self.assertIs(c.get_property('checked'), False)
# Check first row. Hold-shift and check next-to-last row.
checkboxes[0].click()
ActionChains(self.selenium).key_down(Keys.SHIFT).click(checkboxes[-2]).key_up(Keys.SHIFT).perform()
for c in checkboxes[:-2]:
self.assertIs(c.get_property('checked'), True)
self.assertIs(checkboxes[-1].get_property('checked'), False)
def test_select_all_across_pages(self):
from selenium.webdriver.common.by import By
Parent.objects.bulk_create([Parent(name='parent%d' % i) for i in range(101)])
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
selection_indicator = self.selenium.find_element(By.CSS_SELECTOR, '.action-counter')
select_all_indicator = self.selenium.find_element(By.CSS_SELECTOR, '.actions .all')
question = self.selenium.find_element(By.CSS_SELECTOR, '.actions > .question')
clear = self.selenium.find_element(By.CSS_SELECTOR, '.actions > .clear')
select_all = self.selenium.find_element(By.ID, 'action-toggle')
select_across = self.selenium.find_elements(By.NAME, 'select_across')
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), False)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '0 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
select_all.click()
self.assertIs(question.is_displayed(), True)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), True)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '100 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
question.click()
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), True)
self.assertIs(select_all.get_property('checked'), True)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '1')
self.assertIs(selection_indicator.is_displayed(), False)
self.assertIs(select_all_indicator.is_displayed(), True)
clear.click()
self.assertIs(question.is_displayed(), False)
self.assertIs(clear.is_displayed(), False)
self.assertIs(select_all.get_property('checked'), False)
for hidden_input in select_across:
self.assertEqual(hidden_input.get_property('value'), '0')
self.assertIs(selection_indicator.is_displayed(), True)
self.assertEqual(selection_indicator.text, '0 of 100 selected')
self.assertIs(select_all_indicator.is_displayed(), False)
def test_actions_warn_on_pending_edits(self):
from selenium.webdriver.common.by import By
Parent.objects.create(name='foo')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
name_input = self.selenium.find_element(By.ID, 'id_form-0-name')
name_input.clear()
name_input.send_keys('bar')
self.selenium.find_element(By.ID, 'action-toggle').click()
self.selenium.find_element(By.NAME, 'index').click() # Go
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have unsaved changes on individual editable fields. If you '
'run an action, your unsaved changes will be lost.'
)
finally:
alert.dismiss()
def test_save_with_changes_warns_on_pending_action(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
Parent.objects.create(name='parent')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
name_input = self.selenium.find_element(By.ID, 'id_form-0-name')
name_input.clear()
name_input.send_keys('other name')
Select(
self.selenium.find_element(By.NAME, 'action')
).select_by_value('delete_selected')
self.selenium.find_element(By.NAME, '_save').click()
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have selected an action, but you haven’t saved your '
'changes to individual fields yet. Please click OK to save. '
'You’ll need to re-run the action.',
)
finally:
alert.dismiss()
def test_save_without_changes_warns_on_pending_action(self):
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Select
Parent.objects.create(name='parent')
self.admin_login(username='super', password='secret')
self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
Select(
self.selenium.find_element(By.NAME, 'action')
).select_by_value('delete_selected')
self.selenium.find_element(By.NAME, '_save').click()
alert = self.selenium.switch_to.alert
try:
self.assertEqual(
alert.text,
'You have selected an action, and you haven’t made any '
'changes on individual fields. You’re probably looking for '
'the Go button rather than the Save button.',
)
finally:
alert.dismiss()
|
a7f926b0bf2e579db2158a2d204d5f32ae1acd520f913c86aa4df7ff8a16cbb9 | import datetime
from collections import Counter
from unittest import mock
from django.core.exceptions import ValidationError
from django.forms import (
BaseForm, CharField, DateField, FileField, Form, IntegerField,
SplitDateTimeField, formsets,
)
from django.forms.formsets import (
INITIAL_FORM_COUNT, MAX_NUM_FORM_COUNT, MIN_NUM_FORM_COUNT,
TOTAL_FORM_COUNT, BaseFormSet, ManagementForm, all_valid, formset_factory,
)
from django.forms.utils import ErrorList
from django.forms.widgets import HiddenInput
from django.test import SimpleTestCase
from tests.forms_tests.tests import jinja2_tests
class Choice(Form):
choice = CharField()
votes = IntegerField()
ChoiceFormSet = formset_factory(Choice)
class FavoriteDrinkForm(Form):
name = CharField()
class BaseFavoriteDrinksFormSet(BaseFormSet):
def clean(self):
seen_drinks = []
for drink in self.cleaned_data:
if drink['name'] in seen_drinks:
raise ValidationError('You may only specify a drink once.')
seen_drinks.append(drink['name'])
# A FormSet that takes a list of favorite drinks and raises an error if
# there are any duplicates.
FavoriteDrinksFormSet = formset_factory(FavoriteDrinkForm, formset=BaseFavoriteDrinksFormSet, extra=3)
class CustomKwargForm(Form):
def __init__(self, *args, custom_kwarg, **kwargs):
self.custom_kwarg = custom_kwarg
super().__init__(*args, **kwargs)
class FormsFormsetTestCase(SimpleTestCase):
def make_choiceformset(
self, formset_data=None, formset_class=ChoiceFormSet,
total_forms=None, initial_forms=0, max_num_forms=0, min_num_forms=0, **kwargs):
"""
Make a ChoiceFormset from the given formset_data.
The data should be given as a list of (choice, votes) tuples.
"""
kwargs.setdefault('prefix', 'choices')
kwargs.setdefault('auto_id', False)
if formset_data is None:
return formset_class(**kwargs)
if total_forms is None:
total_forms = len(formset_data)
def prefixed(*args):
args = (kwargs['prefix'],) + args
return '-'.join(args)
data = {
prefixed('TOTAL_FORMS'): str(total_forms),
prefixed('INITIAL_FORMS'): str(initial_forms),
prefixed('MAX_NUM_FORMS'): str(max_num_forms),
prefixed('MIN_NUM_FORMS'): str(min_num_forms),
}
for i, (choice, votes) in enumerate(formset_data):
data[prefixed(str(i), 'choice')] = choice
data[prefixed(str(i), 'votes')] = votes
return formset_class(data, **kwargs)
def test_basic_formset(self):
"""
A FormSet constructor takes the same arguments as Form. Create a
FormSet for adding data. By default, it displays 1 blank form.
"""
formset = self.make_choiceformset()
self.assertHTMLEqual(
str(formset),
"""<input type="hidden" name="choices-TOTAL_FORMS" value="1">
<input type="hidden" name="choices-INITIAL_FORMS" value="0">
<input type="hidden" name="choices-MIN_NUM_FORMS" value="0">
<input type="hidden" name="choices-MAX_NUM_FORMS" value="1000">
<tr><th>Choice:</th><td><input type="text" name="choices-0-choice"></td></tr>
<tr><th>Votes:</th><td><input type="number" name="choices-0-votes"></td></tr>"""
)
# FormSet are treated similarly to Forms. FormSet has an is_valid()
# method, and a cleaned_data or errors attribute depending on whether
# all the forms passed validation. However, unlike a Form, cleaned_data
# and errors will be a list of dicts rather than a single dict.
formset = self.make_choiceformset([('Calexico', '100')])
self.assertTrue(formset.is_valid())
self.assertEqual([form.cleaned_data for form in formset.forms], [{'votes': 100, 'choice': 'Calexico'}])
# If a FormSet wasn't passed any data, is_valid() and has_changed()
# return False.
formset = self.make_choiceformset()
self.assertFalse(formset.is_valid())
self.assertFalse(formset.has_changed())
def test_form_kwargs_formset(self):
"""
Custom kwargs set on the formset instance are passed to the
underlying forms.
"""
FormSet = formset_factory(CustomKwargForm, extra=2)
formset = FormSet(form_kwargs={'custom_kwarg': 1})
for form in formset:
self.assertTrue(hasattr(form, 'custom_kwarg'))
self.assertEqual(form.custom_kwarg, 1)
def test_form_kwargs_formset_dynamic(self):
"""Form kwargs can be passed dynamically in a formset."""
class DynamicBaseFormSet(BaseFormSet):
def get_form_kwargs(self, index):
return {'custom_kwarg': index}
DynamicFormSet = formset_factory(CustomKwargForm, formset=DynamicBaseFormSet, extra=2)
formset = DynamicFormSet(form_kwargs={'custom_kwarg': 'ignored'})
for i, form in enumerate(formset):
self.assertTrue(hasattr(form, 'custom_kwarg'))
self.assertEqual(form.custom_kwarg, i)
def test_form_kwargs_empty_form(self):
FormSet = formset_factory(CustomKwargForm)
formset = FormSet(form_kwargs={'custom_kwarg': 1})
self.assertTrue(hasattr(formset.empty_form, 'custom_kwarg'))
self.assertEqual(formset.empty_form.custom_kwarg, 1)
def test_formset_validation(self):
# FormSet instances can also have an error attribute if validation failed for
# any of the forms.
formset = self.make_choiceformset([('Calexico', '')])
self.assertFalse(formset.is_valid())
self.assertEqual(formset.errors, [{'votes': ['This field is required.']}])
def test_formset_validation_count(self):
"""
A formset's ManagementForm is validated once per FormSet.is_valid()
call and each form of the formset is cleaned once.
"""
def make_method_counter(func):
"""Add a counter to func for the number of times it's called."""
counter = Counter()
counter.call_count = 0
def mocked_func(*args, **kwargs):
counter.call_count += 1
return func(*args, **kwargs)
return mocked_func, counter
mocked_is_valid, is_valid_counter = make_method_counter(formsets.ManagementForm.is_valid)
mocked_full_clean, full_clean_counter = make_method_counter(BaseForm.full_clean)
formset = self.make_choiceformset([('Calexico', '100'), ('Any1', '42'), ('Any2', '101')])
with mock.patch('django.forms.formsets.ManagementForm.is_valid', mocked_is_valid), \
mock.patch('django.forms.forms.BaseForm.full_clean', mocked_full_clean):
self.assertTrue(formset.is_valid())
self.assertEqual(is_valid_counter.call_count, 1)
self.assertEqual(full_clean_counter.call_count, 4)
def test_formset_has_changed(self):
"""
FormSet.has_changed() is True if any data is passed to its forms, even
if the formset didn't validate.
"""
blank_formset = self.make_choiceformset([('', '')])
self.assertFalse(blank_formset.has_changed())
# invalid formset
invalid_formset = self.make_choiceformset([('Calexico', '')])
self.assertFalse(invalid_formset.is_valid())
self.assertTrue(invalid_formset.has_changed())
# valid formset
valid_formset = self.make_choiceformset([('Calexico', '100')])
self.assertTrue(valid_formset.is_valid())
self.assertTrue(valid_formset.has_changed())
def test_formset_initial_data(self):
"""
A FormSet can be prefilled with existing data by providing a list of
dicts to the `initial` argument. By default, an extra blank form is
included.
"""
formset = self.make_choiceformset(initial=[{'choice': 'Calexico', 'votes': 100}])
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>
<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>
<li>Choice: <input type="text" name="choices-1-choice"></li>
<li>Votes: <input type="number" name="choices-1-votes"></li>"""
)
def test_blank_form_unfilled(self):
"""A form that's displayed as blank may be submitted as blank."""
formset = self.make_choiceformset([('Calexico', '100'), ('', '')], initial_forms=1)
self.assertTrue(formset.is_valid())
self.assertEqual([form.cleaned_data for form in formset.forms], [{'votes': 100, 'choice': 'Calexico'}, {}])
def test_second_form_partially_filled(self):
"""
If at least one field is filled out on a blank form, it will be
validated.
"""
formset = self.make_choiceformset([('Calexico', '100'), ('The Decemberists', '')], initial_forms=1)
self.assertFalse(formset.is_valid())
self.assertEqual(formset.errors, [{}, {'votes': ['This field is required.']}])
def test_delete_prefilled_data(self):
"""
Deleting prefilled data is an error. Removing data from form fields
isn't the proper way to delete it.
"""
formset = self.make_choiceformset([('', ''), ('', '')], initial_forms=1)
self.assertFalse(formset.is_valid())
self.assertEqual(
formset.errors,
[{'votes': ['This field is required.'], 'choice': ['This field is required.']}, {}]
)
def test_displaying_more_than_one_blank_form(self):
"""
More than 1 empty form can be displayed using formset_factory's
`extra` argument.
"""
ChoiceFormSet = formset_factory(Choice, extra=3)
formset = ChoiceFormSet(auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice"></li>
<li>Votes: <input type="number" name="choices-0-votes"></li>
<li>Choice: <input type="text" name="choices-1-choice"></li>
<li>Votes: <input type="number" name="choices-1-votes"></li>
<li>Choice: <input type="text" name="choices-2-choice"></li>
<li>Votes: <input type="number" name="choices-2-votes"></li>"""
)
# Since every form was displayed as blank, they are also accepted as
# blank. This may seem a little strange, but min_num is used to require
# a minimum number of forms to be completed.
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': '',
'choices-0-votes': '',
'choices-1-choice': '',
'choices-1-votes': '',
'choices-2-choice': '',
'choices-2-votes': '',
}
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual([form.cleaned_data for form in formset.forms], [{}, {}, {}])
def test_min_num_displaying_more_than_one_blank_form(self):
"""
More than 1 empty form can also be displayed using formset_factory's
min_num argument. It will (essentially) increment the extra argument.
"""
ChoiceFormSet = formset_factory(Choice, extra=1, min_num=1)
formset = ChoiceFormSet(auto_id=False, prefix='choices')
# Min_num forms are required; extra forms can be empty.
self.assertFalse(formset.forms[0].empty_permitted)
self.assertTrue(formset.forms[1].empty_permitted)
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice"></li>
<li>Votes: <input type="number" name="choices-0-votes"></li>
<li>Choice: <input type="text" name="choices-1-choice"></li>
<li>Votes: <input type="number" name="choices-1-votes"></li>"""
)
def test_min_num_displaying_more_than_one_blank_form_with_zero_extra(self):
"""More than 1 empty form can be displayed using min_num."""
ChoiceFormSet = formset_factory(Choice, extra=0, min_num=3)
formset = ChoiceFormSet(auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice"></li>
<li>Votes: <input type="number" name="choices-0-votes"></li>
<li>Choice: <input type="text" name="choices-1-choice"></li>
<li>Votes: <input type="number" name="choices-1-votes"></li>
<li>Choice: <input type="text" name="choices-2-choice"></li>
<li>Votes: <input type="number" name="choices-2-votes"></li>"""
)
def test_single_form_completed(self):
"""Just one form may be completed."""
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-1-choice': '',
'choices-1-votes': '',
'choices-2-choice': '',
'choices-2-votes': '',
}
ChoiceFormSet = formset_factory(Choice, extra=3)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual([form.cleaned_data for form in formset.forms], [{'votes': 100, 'choice': 'Calexico'}, {}, {}])
def test_formset_validate_max_flag(self):
"""
If validate_max is set and max_num is less than TOTAL_FORMS in the
data, a ValidationError is raised. MAX_NUM_FORMS in the data is
irrelevant here (it's output as a hint for the client but its value
in the returned data is not checked).
"""
data = {
'choices-TOTAL_FORMS': '2', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '2', # max number of forms - should be ignored
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
}
ChoiceFormSet = formset_factory(Choice, extra=1, max_num=1, validate_max=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ['Please submit at most 1 form.'])
self.assertEqual(
str(formset.non_form_errors()),
'<ul class="errorlist nonform"><li>Please submit at most 1 form.</li></ul>',
)
def test_formset_validate_min_flag(self):
"""
If validate_min is set and min_num is more than TOTAL_FORMS in the
data, a ValidationError is raised. MIN_NUM_FORMS in the data is
irrelevant here (it's output as a hint for the client but its value
in the returned data is not checked).
"""
data = {
'choices-TOTAL_FORMS': '2', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms - should be ignored
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
}
ChoiceFormSet = formset_factory(Choice, extra=1, min_num=3, validate_min=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ['Please submit at least 3 forms.'])
self.assertEqual(
str(formset.non_form_errors()),
'<ul class="errorlist nonform"><li>'
'Please submit at least 3 forms.</li></ul>',
)
def test_formset_validate_min_unchanged_forms(self):
"""
min_num validation doesn't consider unchanged forms with initial data
as "empty".
"""
initial = [
{'choice': 'Zero', 'votes': 0},
{'choice': 'One', 'votes': 0},
]
data = {
'choices-TOTAL_FORMS': '2',
'choices-INITIAL_FORMS': '2',
'choices-MIN_NUM_FORMS': '0',
'choices-MAX_NUM_FORMS': '2',
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1', # changed from initial
}
ChoiceFormSet = formset_factory(Choice, min_num=2, validate_min=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices', initial=initial)
self.assertFalse(formset.forms[0].has_changed())
self.assertTrue(formset.forms[1].has_changed())
self.assertTrue(formset.is_valid())
def test_formset_validate_min_excludes_empty_forms(self):
data = {
'choices-TOTAL_FORMS': '2',
'choices-INITIAL_FORMS': '0',
}
ChoiceFormSet = formset_factory(Choice, extra=2, min_num=1, validate_min=True, can_delete=True)
formset = ChoiceFormSet(data, prefix='choices')
self.assertFalse(formset.has_changed())
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ['Please submit at least 1 form.'])
def test_second_form_partially_filled_2(self):
"""A partially completed form is invalid."""
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-1-choice': 'The Decemberists',
'choices-1-votes': '', # missing value
'choices-2-choice': '',
'choices-2-votes': '',
}
ChoiceFormSet = formset_factory(Choice, extra=3)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertFalse(formset.is_valid())
self.assertEqual(formset.errors, [{}, {'votes': ['This field is required.']}, {}])
def test_more_initial_data(self):
"""
The extra argument works when the formset is pre-filled with initial
data.
"""
initial = [{'choice': 'Calexico', 'votes': 100}]
ChoiceFormSet = formset_factory(Choice, extra=3)
formset = ChoiceFormSet(initial=initial, auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>
<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>
<li>Choice: <input type="text" name="choices-1-choice"></li>
<li>Votes: <input type="number" name="choices-1-votes"></li>
<li>Choice: <input type="text" name="choices-2-choice"></li>
<li>Votes: <input type="number" name="choices-2-votes"></li>
<li>Choice: <input type="text" name="choices-3-choice"></li>
<li>Votes: <input type="number" name="choices-3-votes"></li>"""
)
# Retrieving an empty form works. Tt shows up in the form list.
self.assertTrue(formset.empty_form.empty_permitted)
self.assertHTMLEqual(
formset.empty_form.as_ul(),
"""<li>Choice: <input type="text" name="choices-__prefix__-choice"></li>
<li>Votes: <input type="number" name="choices-__prefix__-votes"></li>"""
)
def test_formset_with_deletion(self):
"""
formset_factory's can_delete argument adds a boolean "delete" field to
each form. When that boolean field is True, the form will be in
formset.deleted_forms.
"""
ChoiceFormSet = formset_factory(Choice, can_delete=True)
initial = [{'choice': 'Calexico', 'votes': 100}, {'choice': 'Fergie', 'votes': 900}]
formset = ChoiceFormSet(initial=initial, auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>
<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>
<li>Delete: <input type="checkbox" name="choices-0-DELETE"></li>
<li>Choice: <input type="text" name="choices-1-choice" value="Fergie"></li>
<li>Votes: <input type="number" name="choices-1-votes" value="900"></li>
<li>Delete: <input type="checkbox" name="choices-1-DELETE"></li>
<li>Choice: <input type="text" name="choices-2-choice"></li>
<li>Votes: <input type="number" name="choices-2-votes"></li>
<li>Delete: <input type="checkbox" name="choices-2-DELETE"></li>"""
)
# To delete something, set that form's special delete field to 'on'.
# Let's go ahead and delete Fergie.
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '2', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-0-DELETE': '',
'choices-1-choice': 'Fergie',
'choices-1-votes': '900',
'choices-1-DELETE': 'on',
'choices-2-choice': '',
'choices-2-votes': '',
'choices-2-DELETE': '',
}
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual(
[form.cleaned_data for form in formset.forms],
[
{'votes': 100, 'DELETE': False, 'choice': 'Calexico'},
{'votes': 900, 'DELETE': True, 'choice': 'Fergie'},
{},
]
)
self.assertEqual(
[form.cleaned_data for form in formset.deleted_forms],
[{'votes': 900, 'DELETE': True, 'choice': 'Fergie'}]
)
def test_formset_with_deletion_remove_deletion_flag(self):
"""
If a form is filled with something and can_delete is also checked, that
form's errors shouldn't make the entire formset invalid since it's
going to be deleted.
"""
class CheckForm(Form):
field = IntegerField(min_value=100)
data = {
'check-TOTAL_FORMS': '3', # the number of forms rendered
'check-INITIAL_FORMS': '2', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'check-MAX_NUM_FORMS': '0', # max number of forms
'check-0-field': '200',
'check-0-DELETE': '',
'check-1-field': '50',
'check-1-DELETE': 'on',
'check-2-field': '',
'check-2-DELETE': '',
}
CheckFormSet = formset_factory(CheckForm, can_delete=True)
formset = CheckFormSet(data, prefix='check')
self.assertTrue(formset.is_valid())
# If the deletion flag is removed, validation is enabled.
data['check-1-DELETE'] = ''
formset = CheckFormSet(data, prefix='check')
self.assertFalse(formset.is_valid())
def test_formset_with_deletion_invalid_deleted_form(self):
"""
deleted_forms works on a valid formset even if a deleted form would
have been invalid.
"""
FavoriteDrinkFormset = formset_factory(form=FavoriteDrinkForm, can_delete=True)
formset = FavoriteDrinkFormset({
'form-0-name': '',
'form-0-DELETE': 'on', # no name!
'form-TOTAL_FORMS': 1,
'form-INITIAL_FORMS': 1,
'form-MIN_NUM_FORMS': 0,
'form-MAX_NUM_FORMS': 1,
})
self.assertTrue(formset.is_valid())
self.assertEqual(formset._errors, [])
self.assertEqual(len(formset.deleted_forms), 1)
def test_formset_with_deletion_custom_widget(self):
class DeletionAttributeFormSet(BaseFormSet):
deletion_widget = HiddenInput
class DeletionMethodFormSet(BaseFormSet):
def get_deletion_widget(self):
return HiddenInput(attrs={'class': 'deletion'})
tests = [
(DeletionAttributeFormSet, '<input type="hidden" name="form-0-DELETE">'),
(
DeletionMethodFormSet,
'<input class="deletion" type="hidden" name="form-0-DELETE">',
),
]
for formset_class, delete_html in tests:
with self.subTest(formset_class=formset_class.__name__):
ArticleFormSet = formset_factory(
ArticleForm,
formset=formset_class,
can_delete=True,
)
formset = ArticleFormSet(auto_id=False)
self.assertHTMLEqual(
'\n'.join([form.as_ul() for form in formset.forms]),
(
f'<li>Title: <input type="text" name="form-0-title"></li>'
f'<li>Pub date: <input type="text" name="form-0-pub_date">'
f'{delete_html}</li>'
),
)
def test_formsets_with_ordering(self):
"""
formset_factory's can_order argument adds an integer field to each
form. When form validation succeeds, [form.cleaned_data for form in formset.forms]
will have the data in the correct order specified by the ordering
fields. If a number is duplicated in the set of ordering fields, for
instance form 0 and form 3 are both marked as 1, then the form index
used as a secondary ordering criteria. In order to put something at the
front of the list, you'd need to set its order to 0.
"""
ChoiceFormSet = formset_factory(Choice, can_order=True)
initial = [{'choice': 'Calexico', 'votes': 100}, {'choice': 'Fergie', 'votes': 900}]
formset = ChoiceFormSet(initial=initial, auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>
<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>
<li>Order: <input type="number" name="choices-0-ORDER" value="1"></li>
<li>Choice: <input type="text" name="choices-1-choice" value="Fergie"></li>
<li>Votes: <input type="number" name="choices-1-votes" value="900"></li>
<li>Order: <input type="number" name="choices-1-ORDER" value="2"></li>
<li>Choice: <input type="text" name="choices-2-choice"></li>
<li>Votes: <input type="number" name="choices-2-votes"></li>
<li>Order: <input type="number" name="choices-2-ORDER"></li>"""
)
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '2', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-0-ORDER': '1',
'choices-1-choice': 'Fergie',
'choices-1-votes': '900',
'choices-1-ORDER': '2',
'choices-2-choice': 'The Decemberists',
'choices-2-votes': '500',
'choices-2-ORDER': '0',
}
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual(
[form.cleaned_data for form in formset.ordered_forms],
[
{'votes': 500, 'ORDER': 0, 'choice': 'The Decemberists'},
{'votes': 100, 'ORDER': 1, 'choice': 'Calexico'},
{'votes': 900, 'ORDER': 2, 'choice': 'Fergie'},
],
)
def test_formsets_with_ordering_custom_widget(self):
class OrderingAttributeFormSet(BaseFormSet):
ordering_widget = HiddenInput
class OrderingMethodFormSet(BaseFormSet):
def get_ordering_widget(self):
return HiddenInput(attrs={'class': 'ordering'})
tests = (
(OrderingAttributeFormSet, '<input type="hidden" name="form-0-ORDER">'),
(OrderingMethodFormSet, '<input class="ordering" type="hidden" name="form-0-ORDER">'),
)
for formset_class, order_html in tests:
with self.subTest(formset_class=formset_class.__name__):
ArticleFormSet = formset_factory(ArticleForm, formset=formset_class, can_order=True)
formset = ArticleFormSet(auto_id=False)
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
(
'<li>Title: <input type="text" name="form-0-title"></li>'
'<li>Pub date: <input type="text" name="form-0-pub_date">'
'%s</li>' % order_html
),
)
def test_empty_ordered_fields(self):
"""
Ordering fields are allowed to be left blank. If they are left blank,
they'll be sorted below everything else.
"""
data = {
'choices-TOTAL_FORMS': '4', # the number of forms rendered
'choices-INITIAL_FORMS': '3', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-0-ORDER': '1',
'choices-1-choice': 'Fergie',
'choices-1-votes': '900',
'choices-1-ORDER': '2',
'choices-2-choice': 'The Decemberists',
'choices-2-votes': '500',
'choices-2-ORDER': '',
'choices-3-choice': 'Basia Bulat',
'choices-3-votes': '50',
'choices-3-ORDER': '',
}
ChoiceFormSet = formset_factory(Choice, can_order=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual(
[form.cleaned_data for form in formset.ordered_forms],
[
{'votes': 100, 'ORDER': 1, 'choice': 'Calexico'},
{'votes': 900, 'ORDER': 2, 'choice': 'Fergie'},
{'votes': 500, 'ORDER': None, 'choice': 'The Decemberists'},
{'votes': 50, 'ORDER': None, 'choice': 'Basia Bulat'},
],
)
def test_ordering_blank_fieldsets(self):
"""Ordering works with blank fieldsets."""
data = {
'choices-TOTAL_FORMS': '3', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
}
ChoiceFormSet = formset_factory(Choice, can_order=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual(formset.ordered_forms, [])
def test_formset_with_ordering_and_deletion(self):
"""FormSets with ordering + deletion."""
ChoiceFormSet = formset_factory(Choice, can_order=True, can_delete=True)
initial = [
{'choice': 'Calexico', 'votes': 100},
{'choice': 'Fergie', 'votes': 900},
{'choice': 'The Decemberists', 'votes': 500},
]
formset = ChoiceFormSet(initial=initial, auto_id=False, prefix='choices')
self.assertHTMLEqual(
'\n'.join(form.as_ul() for form in formset.forms),
"""<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>
<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>
<li>Order: <input type="number" name="choices-0-ORDER" value="1"></li>
<li>Delete: <input type="checkbox" name="choices-0-DELETE"></li>
<li>Choice: <input type="text" name="choices-1-choice" value="Fergie"></li>
<li>Votes: <input type="number" name="choices-1-votes" value="900"></li>
<li>Order: <input type="number" name="choices-1-ORDER" value="2"></li>
<li>Delete: <input type="checkbox" name="choices-1-DELETE"></li>
<li>Choice: <input type="text" name="choices-2-choice" value="The Decemberists"></li>
<li>Votes: <input type="number" name="choices-2-votes" value="500"></li>
<li>Order: <input type="number" name="choices-2-ORDER" value="3"></li>
<li>Delete: <input type="checkbox" name="choices-2-DELETE"></li>
<li>Choice: <input type="text" name="choices-3-choice"></li>
<li>Votes: <input type="number" name="choices-3-votes"></li>
<li>Order: <input type="number" name="choices-3-ORDER"></li>
<li>Delete: <input type="checkbox" name="choices-3-DELETE"></li>"""
)
# Let's delete Fergie, and put The Decemberists ahead of Calexico.
data = {
'choices-TOTAL_FORMS': '4', # the number of forms rendered
'choices-INITIAL_FORMS': '3', # the number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
'choices-0-ORDER': '1',
'choices-0-DELETE': '',
'choices-1-choice': 'Fergie',
'choices-1-votes': '900',
'choices-1-ORDER': '2',
'choices-1-DELETE': 'on',
'choices-2-choice': 'The Decemberists',
'choices-2-votes': '500',
'choices-2-ORDER': '0',
'choices-2-DELETE': '',
'choices-3-choice': '',
'choices-3-votes': '',
'choices-3-ORDER': '',
'choices-3-DELETE': '',
}
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertEqual(
[form.cleaned_data for form in formset.ordered_forms],
[
{'votes': 500, 'DELETE': False, 'ORDER': 0, 'choice': 'The Decemberists'},
{'votes': 100, 'DELETE': False, 'ORDER': 1, 'choice': 'Calexico'},
],
)
self.assertEqual(
[form.cleaned_data for form in formset.deleted_forms],
[{'votes': 900, 'DELETE': True, 'ORDER': 2, 'choice': 'Fergie'}]
)
def test_invalid_deleted_form_with_ordering(self):
"""
Can get ordered_forms from a valid formset even if a deleted form
would have been invalid.
"""
FavoriteDrinkFormset = formset_factory(form=FavoriteDrinkForm, can_delete=True, can_order=True)
formset = FavoriteDrinkFormset({
'form-0-name': '',
'form-0-DELETE': 'on', # no name!
'form-TOTAL_FORMS': 1,
'form-INITIAL_FORMS': 1,
'form-MIN_NUM_FORMS': 0,
'form-MAX_NUM_FORMS': 1
})
self.assertTrue(formset.is_valid())
self.assertEqual(formset.ordered_forms, [])
def test_clean_hook(self):
"""
FormSets have a clean() hook for doing extra validation that isn't tied
to any form. It follows the same pattern as the clean() hook on Forms.
"""
# Start out with a some duplicate data.
data = {
'drinks-TOTAL_FORMS': '2', # the number of forms rendered
'drinks-INITIAL_FORMS': '0', # the number of forms with initial data
'drinks-MIN_NUM_FORMS': '0', # min number of forms
'drinks-MAX_NUM_FORMS': '0', # max number of forms
'drinks-0-name': 'Gin and Tonic',
'drinks-1-name': 'Gin and Tonic',
}
formset = FavoriteDrinksFormSet(data, prefix='drinks')
self.assertFalse(formset.is_valid())
# Any errors raised by formset.clean() are available via the
# formset.non_form_errors() method.
for error in formset.non_form_errors():
self.assertEqual(str(error), 'You may only specify a drink once.')
# The valid case still works.
data['drinks-1-name'] = 'Bloody Mary'
formset = FavoriteDrinksFormSet(data, prefix='drinks')
self.assertTrue(formset.is_valid())
self.assertEqual(formset.non_form_errors(), [])
def test_limiting_max_forms(self):
"""Limiting the maximum number of forms with max_num."""
# When not passed, max_num will take a high default value, leaving the
# number of forms only controlled by the value of the extra parameter.
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=3)
formset = LimitedFavoriteDrinkFormSet()
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input type="text" name="form-0-name" id="id_form-0-name"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input type="text" name="form-1-name" id="id_form-1-name"></td></tr>
<tr><th><label for="id_form-2-name">Name:</label></th>
<td><input type="text" name="form-2-name" id="id_form-2-name"></td></tr>"""
)
# If max_num is 0 then no form is rendered at all.
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=3, max_num=0)
formset = LimitedFavoriteDrinkFormSet()
self.assertEqual(formset.forms, [])
def test_limited_max_forms_two(self):
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=5, max_num=2)
formset = LimitedFavoriteDrinkFormSet()
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th><td>
<input type="text" name="form-0-name" id="id_form-0-name"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input type="text" name="form-1-name" id="id_form-1-name"></td></tr>"""
)
def test_limiting_extra_lest_than_max_num(self):
"""max_num has no effect when extra is less than max_num."""
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=1, max_num=2)
formset = LimitedFavoriteDrinkFormSet()
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input type="text" name="form-0-name" id="id_form-0-name"></td></tr>"""
)
def test_max_num_with_initial_data(self):
# When not passed, max_num will take a high default value, leaving the
# number of forms only controlled by the value of the initial and extra
# parameters.
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=1)
formset = LimitedFavoriteDrinkFormSet(initial=[{'name': 'Fernet and Coke'}])
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input type="text" name="form-0-name" value="Fernet and Coke" id="id_form-0-name"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input type="text" name="form-1-name" id="id_form-1-name"></td></tr>"""
)
def test_max_num_zero(self):
"""
If max_num is 0 then no form is rendered at all, regardless of extra,
unless initial data is present.
"""
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=1, max_num=0)
formset = LimitedFavoriteDrinkFormSet()
self.assertEqual(formset.forms, [])
def test_max_num_zero_with_initial(self):
# initial trumps max_num
initial = [
{'name': 'Fernet and Coke'},
{'name': 'Bloody Mary'},
]
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=1, max_num=0)
formset = LimitedFavoriteDrinkFormSet(initial=initial)
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input id="id_form-0-name" name="form-0-name" type="text" value="Fernet and Coke"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input id="id_form-1-name" name="form-1-name" type="text" value="Bloody Mary"></td></tr>"""
)
def test_more_initial_than_max_num(self):
"""
More initial forms than max_num results in all initial forms being
displayed (but no extra forms).
"""
initial = [
{'name': 'Gin Tonic'},
{'name': 'Bloody Mary'},
{'name': 'Jack and Coke'},
]
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=1, max_num=2)
formset = LimitedFavoriteDrinkFormSet(initial=initial)
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input id="id_form-0-name" name="form-0-name" type="text" value="Gin Tonic"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input id="id_form-1-name" name="form-1-name" type="text" value="Bloody Mary"></td></tr>
<tr><th><label for="id_form-2-name">Name:</label></th>
<td><input id="id_form-2-name" name="form-2-name" type="text" value="Jack and Coke"></td></tr>"""
)
def test_default_absolute_max(self):
# absolute_max defaults to 2 * DEFAULT_MAX_NUM if max_num is None.
data = {
'form-TOTAL_FORMS': 2001,
'form-INITIAL_FORMS': '0',
'form-MAX_NUM_FORMS': '0',
}
formset = FavoriteDrinksFormSet(data=data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(
formset.non_form_errors(),
['Please submit at most 1000 forms.'],
)
self.assertEqual(formset.absolute_max, 2000)
def test_absolute_max(self):
data = {
'form-TOTAL_FORMS': '2001',
'form-INITIAL_FORMS': '0',
'form-MAX_NUM_FORMS': '0',
}
AbsoluteMaxFavoriteDrinksFormSet = formset_factory(
FavoriteDrinkForm,
absolute_max=3000,
)
formset = AbsoluteMaxFavoriteDrinksFormSet(data=data)
self.assertIs(formset.is_valid(), True)
self.assertEqual(len(formset.forms), 2001)
# absolute_max provides a hard limit.
data['form-TOTAL_FORMS'] = '3001'
formset = AbsoluteMaxFavoriteDrinksFormSet(data=data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 3000)
self.assertEqual(
formset.non_form_errors(),
['Please submit at most 1000 forms.'],
)
def test_absolute_max_with_max_num(self):
data = {
'form-TOTAL_FORMS': '1001',
'form-INITIAL_FORMS': '0',
'form-MAX_NUM_FORMS': '0',
}
LimitedFavoriteDrinksFormSet = formset_factory(
FavoriteDrinkForm,
max_num=30,
absolute_max=1000,
)
formset = LimitedFavoriteDrinksFormSet(data=data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 1000)
self.assertEqual(
formset.non_form_errors(),
['Please submit at most 30 forms.'],
)
def test_absolute_max_invalid(self):
msg = "'absolute_max' must be greater or equal to 'max_num'."
for max_num in [None, 31]:
with self.subTest(max_num=max_num):
with self.assertRaisesMessage(ValueError, msg):
formset_factory(FavoriteDrinkForm, max_num=max_num, absolute_max=30)
def test_more_initial_form_result_in_one(self):
"""
One form from initial and extra=3 with max_num=2 results in the one
initial form and one extra.
"""
LimitedFavoriteDrinkFormSet = formset_factory(FavoriteDrinkForm, extra=3, max_num=2)
formset = LimitedFavoriteDrinkFormSet(initial=[{'name': 'Gin Tonic'}])
self.assertHTMLEqual(
'\n'.join(str(form) for form in formset.forms),
"""<tr><th><label for="id_form-0-name">Name:</label></th>
<td><input type="text" name="form-0-name" value="Gin Tonic" id="id_form-0-name"></td></tr>
<tr><th><label for="id_form-1-name">Name:</label></th>
<td><input type="text" name="form-1-name" id="id_form-1-name"></td></tr>"""
)
def test_management_form_field_names(self):
"""The management form class has field names matching the constants."""
self.assertCountEqual(
ManagementForm.base_fields,
[
TOTAL_FORM_COUNT,
INITIAL_FORM_COUNT,
MIN_NUM_FORM_COUNT,
MAX_NUM_FORM_COUNT,
],
)
def test_management_form_prefix(self):
"""The management form has the correct prefix."""
formset = FavoriteDrinksFormSet()
self.assertEqual(formset.management_form.prefix, 'form')
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '0',
'form-MIN_NUM_FORMS': '0',
'form-MAX_NUM_FORMS': '0',
}
formset = FavoriteDrinksFormSet(data=data)
self.assertEqual(formset.management_form.prefix, 'form')
formset = FavoriteDrinksFormSet(initial={})
self.assertEqual(formset.management_form.prefix, 'form')
def test_non_form_errors(self):
data = {
'drinks-TOTAL_FORMS': '2', # the number of forms rendered
'drinks-INITIAL_FORMS': '0', # the number of forms with initial data
'drinks-MIN_NUM_FORMS': '0', # min number of forms
'drinks-MAX_NUM_FORMS': '0', # max number of forms
'drinks-0-name': 'Gin and Tonic',
'drinks-1-name': 'Gin and Tonic',
}
formset = FavoriteDrinksFormSet(data, prefix='drinks')
self.assertFalse(formset.is_valid())
self.assertEqual(formset.non_form_errors(), ['You may only specify a drink once.'])
self.assertEqual(
str(formset.non_form_errors()),
'<ul class="errorlist nonform"><li>'
'You may only specify a drink once.</li></ul>',
)
def test_formset_iteration(self):
"""Formset instances are iterable."""
ChoiceFormset = formset_factory(Choice, extra=3)
formset = ChoiceFormset()
# An iterated formset yields formset.forms.
forms = list(formset)
self.assertEqual(forms, formset.forms)
self.assertEqual(len(formset), len(forms))
# A formset may be indexed to retrieve its forms.
self.assertEqual(formset[0], forms[0])
with self.assertRaises(IndexError):
formset[3]
# Formsets can override the default iteration order
class BaseReverseFormSet(BaseFormSet):
def __iter__(self):
return reversed(self.forms)
def __getitem__(self, idx):
return super().__getitem__(len(self) - idx - 1)
ReverseChoiceFormset = formset_factory(Choice, BaseReverseFormSet, extra=3)
reverse_formset = ReverseChoiceFormset()
# __iter__() modifies the rendering order.
# Compare forms from "reverse" formset with forms from original formset
self.assertEqual(str(reverse_formset[0]), str(forms[-1]))
self.assertEqual(str(reverse_formset[1]), str(forms[-2]))
self.assertEqual(len(reverse_formset), len(forms))
def test_formset_nonzero(self):
"""A formsets without any forms evaluates as True."""
ChoiceFormset = formset_factory(Choice, extra=0)
formset = ChoiceFormset()
self.assertEqual(len(formset.forms), 0)
self.assertTrue(formset)
def test_formset_splitdatetimefield(self):
"""
Formset works with SplitDateTimeField(initial=datetime.datetime.now).
"""
class SplitDateTimeForm(Form):
when = SplitDateTimeField(initial=datetime.datetime.now)
SplitDateTimeFormSet = formset_factory(SplitDateTimeForm)
data = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '0',
'form-0-when_0': '1904-06-16',
'form-0-when_1': '15:51:33',
}
formset = SplitDateTimeFormSet(data)
self.assertTrue(formset.is_valid())
def test_formset_error_class(self):
"""Formset's forms use the formset's error_class."""
class CustomErrorList(ErrorList):
pass
formset = FavoriteDrinksFormSet(error_class=CustomErrorList)
self.assertEqual(formset.forms[0].error_class, CustomErrorList)
def test_formset_calls_forms_is_valid(self):
"""Formsets call is_valid() on each form."""
class AnotherChoice(Choice):
def is_valid(self):
self.is_valid_called = True
return super().is_valid()
AnotherChoiceFormSet = formset_factory(AnotherChoice)
data = {
'choices-TOTAL_FORMS': '1', # number of forms rendered
'choices-INITIAL_FORMS': '0', # number of forms with initial data
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '0', # max number of forms
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
}
formset = AnotherChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertTrue(formset.is_valid())
self.assertTrue(all(form.is_valid_called for form in formset.forms))
def test_hard_limit_on_instantiated_forms(self):
"""A formset has a hard limit on the number of forms instantiated."""
# reduce the default limit of 1000 temporarily for testing
_old_DEFAULT_MAX_NUM = formsets.DEFAULT_MAX_NUM
try:
formsets.DEFAULT_MAX_NUM = 2
ChoiceFormSet = formset_factory(Choice, max_num=1)
# someone fiddles with the mgmt form data...
formset = ChoiceFormSet(
{
'choices-TOTAL_FORMS': '4',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '4',
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
'choices-2-choice': 'Two',
'choices-2-votes': '2',
'choices-3-choice': 'Three',
'choices-3-votes': '3',
},
prefix='choices',
)
# But we still only instantiate 3 forms
self.assertEqual(len(formset.forms), 3)
# and the formset isn't valid
self.assertFalse(formset.is_valid())
finally:
formsets.DEFAULT_MAX_NUM = _old_DEFAULT_MAX_NUM
def test_increase_hard_limit(self):
"""Can increase the built-in forms limit via a higher max_num."""
# reduce the default limit of 1000 temporarily for testing
_old_DEFAULT_MAX_NUM = formsets.DEFAULT_MAX_NUM
try:
formsets.DEFAULT_MAX_NUM = 3
# for this form, we want a limit of 4
ChoiceFormSet = formset_factory(Choice, max_num=4)
formset = ChoiceFormSet(
{
'choices-TOTAL_FORMS': '4',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0', # min number of forms
'choices-MAX_NUM_FORMS': '4',
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
'choices-2-choice': 'Two',
'choices-2-votes': '2',
'choices-3-choice': 'Three',
'choices-3-votes': '3',
},
prefix='choices',
)
# Four forms are instantiated and no exception is raised
self.assertEqual(len(formset.forms), 4)
finally:
formsets.DEFAULT_MAX_NUM = _old_DEFAULT_MAX_NUM
def test_non_form_errors_run_full_clean(self):
"""
If non_form_errors() is called without calling is_valid() first,
it should ensure that full_clean() is called.
"""
class BaseCustomFormSet(BaseFormSet):
def clean(self):
raise ValidationError("This is a non-form error")
ChoiceFormSet = formset_factory(Choice, formset=BaseCustomFormSet)
data = {
'choices-TOTAL_FORMS': '1',
'choices-INITIAL_FORMS': '0',
}
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertIsInstance(formset.non_form_errors(), ErrorList)
self.assertEqual(list(formset.non_form_errors()), ['This is a non-form error'])
def test_validate_max_ignores_forms_marked_for_deletion(self):
class CheckForm(Form):
field = IntegerField()
data = {
'check-TOTAL_FORMS': '2',
'check-INITIAL_FORMS': '0',
'check-MAX_NUM_FORMS': '1',
'check-0-field': '200',
'check-0-DELETE': '',
'check-1-field': '50',
'check-1-DELETE': 'on',
}
CheckFormSet = formset_factory(CheckForm, max_num=1, validate_max=True, can_delete=True)
formset = CheckFormSet(data, prefix='check')
self.assertTrue(formset.is_valid())
def test_formset_total_error_count(self):
"""A valid formset should have 0 total errors."""
data = [ # formset_data, expected error count
([('Calexico', '100')], 0),
([('Calexico', '')], 1),
([('', 'invalid')], 2),
([('Calexico', '100'), ('Calexico', '')], 1),
([('Calexico', ''), ('Calexico', '')], 2),
]
for formset_data, expected_error_count in data:
formset = self.make_choiceformset(formset_data)
self.assertEqual(formset.total_error_count(), expected_error_count)
def test_formset_total_error_count_with_non_form_errors(self):
data = {
'choices-TOTAL_FORMS': '2', # the number of forms rendered
'choices-INITIAL_FORMS': '0', # the number of forms with initial data
'choices-MAX_NUM_FORMS': '2', # max number of forms - should be ignored
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
}
ChoiceFormSet = formset_factory(Choice, extra=1, max_num=1, validate_max=True)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertEqual(formset.total_error_count(), 1)
data['choices-1-votes'] = ''
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertEqual(formset.total_error_count(), 2)
def test_html_safe(self):
formset = self.make_choiceformset()
self.assertTrue(hasattr(formset, '__html__'))
self.assertEqual(str(formset), formset.__html__())
def test_can_delete_extra_formset_forms(self):
ChoiceFormFormset = formset_factory(form=Choice, can_delete=True, extra=2)
formset = ChoiceFormFormset()
self.assertEqual(len(formset), 2)
self.assertIn('DELETE', formset.forms[0].fields)
self.assertIn('DELETE', formset.forms[1].fields)
def test_disable_delete_extra_formset_forms(self):
ChoiceFormFormset = formset_factory(
form=Choice,
can_delete=True,
can_delete_extra=False,
extra=2,
)
formset = ChoiceFormFormset()
self.assertEqual(len(formset), 2)
self.assertNotIn('DELETE', formset.forms[0].fields)
self.assertNotIn('DELETE', formset.forms[1].fields)
formset = ChoiceFormFormset(initial=[{'choice': 'Zero', 'votes': '1'}])
self.assertEqual(len(formset), 3)
self.assertIn('DELETE', formset.forms[0].fields)
self.assertNotIn('DELETE', formset.forms[1].fields)
self.assertNotIn('DELETE', formset.forms[2].fields)
formset = ChoiceFormFormset(data={
'form-0-choice': 'Zero',
'form-0-votes': '0',
'form-0-DELETE': 'on',
'form-1-choice': 'One',
'form-1-votes': '1',
'form-2-choice': '',
'form-2-votes': '',
'form-TOTAL_FORMS': '3',
'form-INITIAL_FORMS': '1',
}, initial=[{'choice': 'Zero', 'votes': '1'}])
self.assertEqual(formset.cleaned_data, [
{'choice': 'Zero', 'votes': 0, 'DELETE': True},
{'choice': 'One', 'votes': 1},
{},
])
self.assertIs(formset._should_delete_form(formset.forms[0]), True)
self.assertIs(formset._should_delete_form(formset.forms[1]), False)
self.assertIs(formset._should_delete_form(formset.forms[2]), False)
def test_custom_renderer(self):
"""
A custom renderer passed to a formset_factory() is passed to all forms
and ErrorList.
"""
from django.forms.renderers import Jinja2
renderer = Jinja2()
data = {
'choices-TOTAL_FORMS': '2',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0',
'choices-0-choice': 'Zero',
'choices-0-votes': '',
'choices-1-choice': 'One',
'choices-1-votes': '',
}
ChoiceFormSet = formset_factory(Choice, renderer=renderer)
formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertEqual(formset.renderer, renderer)
self.assertEqual(formset.forms[0].renderer, renderer)
self.assertEqual(formset.management_form.renderer, renderer)
self.assertEqual(formset.non_form_errors().renderer, renderer)
self.assertEqual(formset.empty_form.renderer, renderer)
@jinja2_tests
class Jinja2FormsFormsetTestCase(FormsFormsetTestCase):
pass
class FormsetAsTagTests(SimpleTestCase):
def setUp(self):
data = {
'choices-TOTAL_FORMS': '1',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0',
'choices-MAX_NUM_FORMS': '0',
'choices-0-choice': 'Calexico',
'choices-0-votes': '100',
}
self.formset = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.management_form_html = (
'<input type="hidden" name="choices-TOTAL_FORMS" value="1">'
'<input type="hidden" name="choices-INITIAL_FORMS" value="0">'
'<input type="hidden" name="choices-MIN_NUM_FORMS" value="0">'
'<input type="hidden" name="choices-MAX_NUM_FORMS" value="0">'
)
def test_as_table(self):
self.assertHTMLEqual(
self.formset.as_table(),
self.management_form_html + (
'<tr><th>Choice:</th><td>'
'<input type="text" name="choices-0-choice" value="Calexico"></td></tr>'
'<tr><th>Votes:</th><td>'
'<input type="number" name="choices-0-votes" value="100"></td></tr>'
)
)
def test_as_p(self):
self.assertHTMLEqual(
self.formset.as_p(),
self.management_form_html + (
'<p>Choice: <input type="text" name="choices-0-choice" value="Calexico"></p>'
'<p>Votes: <input type="number" name="choices-0-votes" value="100"></p>'
)
)
def test_as_ul(self):
self.assertHTMLEqual(
self.formset.as_ul(),
self.management_form_html + (
'<li>Choice: <input type="text" name="choices-0-choice" value="Calexico"></li>'
'<li>Votes: <input type="number" name="choices-0-votes" value="100"></li>'
)
)
@jinja2_tests
class Jinja2FormsetAsTagTests(FormsetAsTagTests):
pass
class ArticleForm(Form):
title = CharField()
pub_date = DateField()
ArticleFormSet = formset_factory(ArticleForm)
class TestIsBoundBehavior(SimpleTestCase):
def test_no_data_error(self):
formset = ArticleFormSet({})
self.assertIs(formset.is_valid(), False)
self.assertEqual(
formset.non_form_errors(),
[
'ManagementForm data is missing or has been tampered with. '
'Missing fields: form-TOTAL_FORMS, form-INITIAL_FORMS. '
'You may need to file a bug report if the issue persists.',
],
)
self.assertEqual(formset.errors, [])
# Can still render the formset.
self.assertHTMLEqual(
str(formset),
'<tr><td colspan="2">'
'<ul class="errorlist nonfield">'
'<li>(Hidden field TOTAL_FORMS) This field is required.</li>'
'<li>(Hidden field INITIAL_FORMS) This field is required.</li>'
'</ul>'
'<input type="hidden" name="form-TOTAL_FORMS" id="id_form-TOTAL_FORMS">'
'<input type="hidden" name="form-INITIAL_FORMS" id="id_form-INITIAL_FORMS">'
'<input type="hidden" name="form-MIN_NUM_FORMS" id="id_form-MIN_NUM_FORMS">'
'<input type="hidden" name="form-MAX_NUM_FORMS" id="id_form-MAX_NUM_FORMS">'
'</td></tr>\n'
)
def test_management_form_invalid_data(self):
data = {
'form-TOTAL_FORMS': 'two',
'form-INITIAL_FORMS': 'one',
}
formset = ArticleFormSet(data)
self.assertIs(formset.is_valid(), False)
self.assertEqual(
formset.non_form_errors(),
[
'ManagementForm data is missing or has been tampered with. '
'Missing fields: form-TOTAL_FORMS, form-INITIAL_FORMS. '
'You may need to file a bug report if the issue persists.',
],
)
self.assertEqual(formset.errors, [])
# Can still render the formset.
self.assertHTMLEqual(
str(formset),
'<tr><td colspan="2">'
'<ul class="errorlist nonfield">'
'<li>(Hidden field TOTAL_FORMS) Enter a whole number.</li>'
'<li>(Hidden field INITIAL_FORMS) Enter a whole number.</li>'
'</ul>'
'<input type="hidden" name="form-TOTAL_FORMS" value="two" id="id_form-TOTAL_FORMS">'
'<input type="hidden" name="form-INITIAL_FORMS" value="one" id="id_form-INITIAL_FORMS">'
'<input type="hidden" name="form-MIN_NUM_FORMS" id="id_form-MIN_NUM_FORMS">'
'<input type="hidden" name="form-MAX_NUM_FORMS" id="id_form-MAX_NUM_FORMS">'
'</td></tr>\n',
)
def test_customize_management_form_error(self):
formset = ArticleFormSet({}, error_messages={'missing_management_form': 'customized'})
self.assertIs(formset.is_valid(), False)
self.assertEqual(formset.non_form_errors(), ['customized'])
self.assertEqual(formset.errors, [])
def test_with_management_data_attrs_work_fine(self):
data = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '0',
}
formset = ArticleFormSet(data)
self.assertEqual(0, formset.initial_form_count())
self.assertEqual(1, formset.total_form_count())
self.assertTrue(formset.is_bound)
self.assertTrue(formset.forms[0].is_bound)
self.assertTrue(formset.is_valid())
self.assertTrue(formset.forms[0].is_valid())
self.assertEqual([{}], formset.cleaned_data)
def test_form_errors_are_caught_by_formset(self):
data = {
'form-TOTAL_FORMS': '2',
'form-INITIAL_FORMS': '0',
'form-0-title': 'Test',
'form-0-pub_date': '1904-06-16',
'form-1-title': 'Test',
'form-1-pub_date': '', # <-- this date is missing but required
}
formset = ArticleFormSet(data)
self.assertFalse(formset.is_valid())
self.assertEqual([{}, {'pub_date': ['This field is required.']}], formset.errors)
def test_empty_forms_are_unbound(self):
data = {
'form-TOTAL_FORMS': '1',
'form-INITIAL_FORMS': '0',
'form-0-title': 'Test',
'form-0-pub_date': '1904-06-16',
}
unbound_formset = ArticleFormSet()
bound_formset = ArticleFormSet(data)
empty_forms = [
unbound_formset.empty_form,
bound_formset.empty_form
]
# Empty forms should be unbound
self.assertFalse(empty_forms[0].is_bound)
self.assertFalse(empty_forms[1].is_bound)
# The empty forms should be equal.
self.assertHTMLEqual(empty_forms[0].as_p(), empty_forms[1].as_p())
@jinja2_tests
class TestIsBoundBehavior(TestIsBoundBehavior):
pass
class TestEmptyFormSet(SimpleTestCase):
def test_empty_formset_is_valid(self):
"""An empty formset still calls clean()"""
class EmptyFsetWontValidate(BaseFormSet):
def clean(self):
raise ValidationError('Clean method called')
EmptyFsetWontValidateFormset = formset_factory(FavoriteDrinkForm, extra=0, formset=EmptyFsetWontValidate)
formset = EmptyFsetWontValidateFormset(
data={'form-INITIAL_FORMS': '0', 'form-TOTAL_FORMS': '0'},
prefix="form",
)
formset2 = EmptyFsetWontValidateFormset(
data={'form-INITIAL_FORMS': '0', 'form-TOTAL_FORMS': '1', 'form-0-name': 'bah'},
prefix="form",
)
self.assertFalse(formset.is_valid())
self.assertFalse(formset2.is_valid())
def test_empty_formset_media(self):
"""Media is available on empty formset."""
class MediaForm(Form):
class Media:
js = ('some-file.js',)
self.assertIn('some-file.js', str(formset_factory(MediaForm, extra=0)().media))
def test_empty_formset_is_multipart(self):
"""is_multipart() works with an empty formset."""
class FileForm(Form):
file = FileField()
self.assertTrue(formset_factory(FileForm, extra=0)().is_multipart())
class AllValidTests(SimpleTestCase):
def test_valid(self):
data = {
'choices-TOTAL_FORMS': '2',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0',
'choices-0-choice': 'Zero',
'choices-0-votes': '0',
'choices-1-choice': 'One',
'choices-1-votes': '1',
}
ChoiceFormSet = formset_factory(Choice)
formset1 = ChoiceFormSet(data, auto_id=False, prefix='choices')
formset2 = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertIs(all_valid((formset1, formset2)), True)
expected_errors = [{}, {}]
self.assertEqual(formset1._errors, expected_errors)
self.assertEqual(formset2._errors, expected_errors)
def test_invalid(self):
"""all_valid() validates all forms, even when some are invalid."""
data = {
'choices-TOTAL_FORMS': '2',
'choices-INITIAL_FORMS': '0',
'choices-MIN_NUM_FORMS': '0',
'choices-0-choice': 'Zero',
'choices-0-votes': '',
'choices-1-choice': 'One',
'choices-1-votes': '',
}
ChoiceFormSet = formset_factory(Choice)
formset1 = ChoiceFormSet(data, auto_id=False, prefix='choices')
formset2 = ChoiceFormSet(data, auto_id=False, prefix='choices')
self.assertIs(all_valid((formset1, formset2)), False)
expected_errors = [{'votes': ['This field is required.']}, {'votes': ['This field is required.']}]
self.assertEqual(formset1._errors, expected_errors)
self.assertEqual(formset2._errors, expected_errors)
|
fc49784004baaafe93e6819d95d1500ccd1b79117e10fcca76558afdbfda0eae | from django.forms import (
CharField, ChoiceField, Form, IntegerField, RadioSelect, Select, TextInput,
)
from django.test import SimpleTestCase
from django.utils import translation
from django.utils.translation import gettext_lazy
from tests.forms_tests.tests import jinja2_tests
class FormsI18nTests(SimpleTestCase):
def test_lazy_labels(self):
class SomeForm(Form):
username = CharField(max_length=10, label=gettext_lazy('username'))
f = SomeForm()
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">username:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
# Translations are done at rendering time, so multi-lingual apps can define forms)
with translation.override('de'):
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">Benutzername:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
with translation.override('pl'):
self.assertHTMLEqual(
f.as_p(),
'<p><label for="id_username">nazwa u\u017cytkownika:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" required></p>'
)
def test_non_ascii_label(self):
class SomeForm(Form):
field_1 = CharField(max_length=10, label=gettext_lazy('field_1'))
field_2 = CharField(
max_length=10,
label=gettext_lazy('field_2'),
widget=TextInput(attrs={'id': 'field_2_id'}),
)
f = SomeForm()
self.assertHTMLEqual(f['field_1'].label_tag(), '<label for="id_field_1">field_1:</label>')
self.assertHTMLEqual(
f['field_1'].legend_tag(),
'<legend for="id_field_1">field_1:</legend>',
)
self.assertHTMLEqual(f['field_2'].label_tag(), '<label for="field_2_id">field_2:</label>')
self.assertHTMLEqual(
f['field_2'].legend_tag(),
'<legend for="field_2_id">field_2:</legend>',
)
def test_non_ascii_choices(self):
class SomeForm(Form):
somechoice = ChoiceField(
choices=(('\xc5', 'En tied\xe4'), ('\xf8', 'Mies'), ('\xdf', 'Nainen')),
widget=RadioSelect(),
label='\xc5\xf8\xdf',
)
f = SomeForm()
self.assertHTMLEqual(
f.as_p(),
'<p><label>\xc5\xf8\xdf:</label>'
'<div id="id_somechoice">\n'
'<div><label for="id_somechoice_0">'
'<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
'En tied\xe4</label></div>\n'
'<div><label for="id_somechoice_1">'
'<input type="radio" id="id_somechoice_1" value="\xf8" name="somechoice" required> '
'Mies</label></div>\n<div><label for="id_somechoice_2">'
'<input type="radio" id="id_somechoice_2" value="\xdf" name="somechoice" required> '
'Nainen</label></div>\n</div></p>'
)
# Translated error messages
with translation.override('ru'):
f = SomeForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist"><li>'
'\u041e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c'
'\u043d\u043e\u0435 \u043f\u043e\u043b\u0435.</li></ul>\n'
'<p><label>\xc5\xf8\xdf:</label>'
' <div id="id_somechoice">\n<div><label for="id_somechoice_0">'
'<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
'En tied\xe4</label></div>\n'
'<div><label for="id_somechoice_1">'
'<input type="radio" id="id_somechoice_1" value="\xf8" name="somechoice" required> '
'Mies</label></div>\n<div><label for="id_somechoice_2">'
'<input type="radio" id="id_somechoice_2" value="\xdf" name="somechoice" required> '
'Nainen</label></div>\n</div></p>'
)
def test_select_translated_text(self):
# Deep copying translated text shouldn't raise an error.
class CopyForm(Form):
degree = IntegerField(widget=Select(choices=((1, gettext_lazy('test')),)))
CopyForm()
@jinja2_tests
class Jinja2FormsI18nTests(FormsI18nTests):
pass
|
2b7612a8cd60c83eaad8459a005dd930554114e86b4ac61de7799971a6f9b8ea | import copy
import datetime
import json
import uuid
from django.core.exceptions import NON_FIELD_ERRORS
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.validators import MaxValueValidator, RegexValidator
from django.forms import (
BooleanField, CharField, CheckboxSelectMultiple, ChoiceField, DateField,
DateTimeField, EmailField, FileField, FileInput, FloatField, Form,
HiddenInput, ImageField, IntegerField, MultipleChoiceField,
MultipleHiddenInput, MultiValueField, MultiWidget, NullBooleanField,
PasswordInput, RadioSelect, Select, SplitDateTimeField,
SplitHiddenDateTimeWidget, Textarea, TextInput, TimeField, ValidationError,
forms,
)
from django.forms.renderers import DjangoTemplates, get_default_renderer
from django.forms.utils import ErrorList
from django.http import QueryDict
from django.template import Context, Template
from django.test import SimpleTestCase
from django.test.utils import override_settings
from django.utils.datastructures import MultiValueDict
from django.utils.safestring import mark_safe
from tests.forms_tests.tests import jinja2_tests
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=RadioSelect)
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class PersonNew(Form):
first_name = CharField(widget=TextInput(attrs={'id': 'first_name_id'}))
last_name = CharField()
birthday = DateField()
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
class MultiValueDictLike(dict):
def getlist(self, key):
return [self[key]]
class FormsTestCase(SimpleTestCase):
# A Form is a collection of Fields. It knows how to validate a set of data and it
# knows how to render itself in a couple of default ways (e.g., an HTML table).
# You can pass it data in __init__(), as a dictionary.
def test_form(self):
# Pass a dictionary to a Form's __init__().
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors, {})
self.assertIsInstance(p.errors, dict)
self.assertTrue(p.is_valid())
self.assertHTMLEqual(p.errors.as_ul(), '')
self.assertEqual(p.errors.as_text(), '')
self.assertEqual(p.cleaned_data["first_name"], 'John')
self.assertEqual(p.cleaned_data["last_name"], 'Lennon')
self.assertEqual(p.cleaned_data["birthday"], datetime.date(1940, 10, 9))
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" value="John" id="id_first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="last_name" value="Lennon" id="id_last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>'
)
msg = "Key 'nonexistentfield' not found in 'Person'. Choices are: birthday, first_name, last_name."
with self.assertRaisesMessage(KeyError, msg):
p['nonexistentfield']
form_output = []
for boundfield in p:
form_output.append(str(boundfield))
self.assertHTMLEqual(
'\n'.join(form_output),
"""<input type="text" name="first_name" value="John" id="id_first_name" required>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required>"""
)
form_output = []
for boundfield in p:
form_output.append([boundfield.label, boundfield.data])
self.assertEqual(form_output, [
['First name', 'John'],
['Last name', 'Lennon'],
['Birthday', '1940-10-9']
])
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>"""
)
def test_empty_dict(self):
# Empty dictionaries are valid, too.
p = Person({})
self.assertTrue(p.is_bound)
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {})
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
<label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_empty_querydict_args(self):
data = QueryDict()
files = QueryDict()
p = Person(data, files)
self.assertIs(p.data, data)
self.assertIs(p.files, files)
def test_unbound_form(self):
# If you don't pass any values to the Form's __init__(), or if you pass None,
# the Form will be considered unbound and won't do any validation. Form.errors
# will be an empty dictionary *but* Form.is_valid() will return False.
p = Person()
self.assertFalse(p.is_bound)
self.assertEqual(p.errors, {})
self.assertFalse(p.is_valid())
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertHTMLEqual(
str(p),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required></p>"""
)
def test_unicode_values(self):
# Unicode values are handled properly.
p = Person({
'first_name': 'John',
'last_name': '\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111',
'birthday': '1940-10-9'
})
self.assertHTMLEqual(
p.as_table(),
'<tr><th><label for="id_first_name">First name:</label></th><td>'
'<input type="text" name="first_name" value="John" id="id_first_name" required></td></tr>\n'
'<tr><th><label for="id_last_name">Last name:</label>'
'</th><td><input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111"'
'id="id_last_name" required></td></tr>\n'
'<tr><th><label for="id_birthday">Birthday:</label></th><td>'
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></td></tr>'
)
self.assertHTMLEqual(
p.as_ul(),
'<li><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></li>\n'
'<li><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></li>\n'
'<li><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></li>'
)
self.assertHTMLEqual(
p.as_p(),
'<p><label for="id_first_name">First name:</label> '
'<input type="text" name="first_name" value="John" id="id_first_name" required></p>\n'
'<p><label for="id_last_name">Last name:</label> '
'<input type="text" name="last_name" '
'value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" id="id_last_name" required></p>\n'
'<p><label for="id_birthday">Birthday:</label> '
'<input type="text" name="birthday" value="1940-10-9" id="id_birthday" required></p>'
)
p = Person({'last_name': 'Lennon'})
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertFalse(p.is_valid())
self.assertEqual(
p.errors,
{'birthday': ['This field is required.'], 'first_name': ['This field is required.']}
)
self.assertEqual(p.cleaned_data, {'last_name': 'Lennon'})
self.assertEqual(p['first_name'].errors, ['This field is required.'])
self.assertHTMLEqual(
p['first_name'].errors.as_ul(),
'<ul class="errorlist"><li>This field is required.</li></ul>'
)
self.assertEqual(p['first_name'].errors.as_text(), '* This field is required.')
p = Person()
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="first_name" id="id_first_name" required>',
)
self.assertHTMLEqual(str(p['last_name']), '<input type="text" name="last_name" id="id_last_name" required>')
self.assertHTMLEqual(str(p['birthday']), '<input type="text" name="birthday" id="id_birthday" required>')
def test_cleaned_data_only_fields(self):
# cleaned_data will always *only* contain a key for fields defined in the
# Form, even if you pass extra data when you define the Form. In this
# example, we pass a bunch of extra fields to the form constructor,
# but cleaned_data contains only the form's fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9',
'extra1': 'hello',
'extra2': 'hello',
}
p = Person(data)
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_optional_data(self):
# cleaned_data will include a key and value for *all* fields defined in the Form,
# even if the Form's data didn't include a value for fields that are not
# required. In this example, the data dictionary doesn't include a value for the
# "nick_name" field, but cleaned_data includes it. For CharFields, it's set to the
# empty string.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
nick_name = CharField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['nick_name'], '')
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
# For DateFields, it's set to None.
class OptionalPersonForm(Form):
first_name = CharField()
last_name = CharField()
birth_date = DateField(required=False)
data = {'first_name': 'John', 'last_name': 'Lennon'}
f = OptionalPersonForm(data)
self.assertTrue(f.is_valid())
self.assertIsNone(f.cleaned_data['birth_date'])
self.assertEqual(f.cleaned_data['first_name'], 'John')
self.assertEqual(f.cleaned_data['last_name'], 'Lennon')
def test_auto_id(self):
# "auto_id" tells the Form to add an "id" attribute to each form element.
# If it's a string that contains '%s', Django will use that as a format string
# into which the field's name will be inserted. It will also put a <label> around
# the human-readable labels for a field.
p = Person(auto_id='%s_id')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="first_name_id">First name:</label></th><td>
<input type="text" name="first_name" id="first_name_id" required></td></tr>
<tr><th><label for="last_name_id">Last name:</label></th><td>
<input type="text" name="last_name" id="last_name_id" required></td></tr>
<tr><th><label for="birthday_id">Birthday:</label></th><td>
<input type="text" name="birthday" id="birthday_id" required></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></li>
<li><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></li>
<li><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="first_name_id">First name:</label>
<input type="text" name="first_name" id="first_name_id" required></p>
<p><label for="last_name_id">Last name:</label>
<input type="text" name="last_name" id="last_name_id" required></p>
<p><label for="birthday_id">Birthday:</label>
<input type="text" name="birthday" id="birthday_id" required></p>"""
)
def test_auto_id_true(self):
# If auto_id is any True value whose str() does not contain '%s', the "id"
# attribute will be the name of the field.
p = Person(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name">First name:</label>
<input type="text" name="first_name" id="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_auto_id_false(self):
# If auto_id is any False value, an "id" attribute won't be output unless it
# was manually entered.
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_id_on_field(self):
# In this example, auto_id is False, but the "id" attribute for the "first_name"
# field is given. Also note that field gets a <label>, while the others don't.
p = PersonNew(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
def test_auto_id_on_form_and_field(self):
# If the "id" attribute is specified in the Form and auto_id is True, the "id"
# attribute in the Form gets precedence.
p = PersonNew(auto_id=True)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="first_name_id">First name:</label>
<input type="text" id="first_name_id" name="first_name" required></li>
<li><label for="last_name">Last name:</label>
<input type="text" name="last_name" id="last_name" required></li>
<li><label for="birthday">Birthday:</label>
<input type="text" name="birthday" id="birthday" required></li>"""
)
def test_various_boolean_values(self):
class SignupForm(Form):
email = EmailField()
get_spam = BooleanField()
f = SignupForm(auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" required>')
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': True}, auto_id=False)
self.assertHTMLEqual(str(f['email']), '<input type="email" name="email" value="[email protected]" required>')
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
# 'True' or 'true' should be rendered without a value attribute
f = SignupForm({'email': '[email protected]', 'get_spam': 'True'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']),
'<input checked type="checkbox" name="get_spam" required>',
)
f = SignupForm({'email': '[email protected]', 'get_spam': 'true'}, auto_id=False)
self.assertHTMLEqual(
str(f['get_spam']), '<input checked type="checkbox" name="get_spam" required>')
# A value of 'False' or 'false' should be rendered unchecked
f = SignupForm({'email': '[email protected]', 'get_spam': 'False'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
f = SignupForm({'email': '[email protected]', 'get_spam': 'false'}, auto_id=False)
self.assertHTMLEqual(str(f['get_spam']), '<input type="checkbox" name="get_spam" required>')
# A value of '0' should be interpreted as a True value (#16820)
f = SignupForm({'email': '[email protected]', 'get_spam': '0'})
self.assertTrue(f.is_valid())
self.assertTrue(f.cleaned_data.get('get_spam'))
def test_widget_output(self):
# Any Field can have a Widget class passed to its constructor:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea)
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['subject']), '<input type="text" name="subject" required>')
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="10" cols="40" required></textarea>')
# as_textarea(), as_text() and as_hidden() are shortcuts for changing the output
# widget type:
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea name="subject" rows="10" cols="40" required></textarea>',
)
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message">')
# The 'widget' parameter to a Field can also be an instance:
class ContactForm(Form):
subject = CharField()
message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
f = ContactForm(auto_id=False)
self.assertHTMLEqual(str(f['message']), '<textarea name="message" rows="80" cols="20" required></textarea>')
# Instance-level attrs are *not* carried over to as_textarea(), as_text() and
# as_hidden():
self.assertHTMLEqual(f['message'].as_text(), '<input type="text" name="message" required>')
f = ContactForm({'subject': 'Hello', 'message': 'I love you.'}, auto_id=False)
self.assertHTMLEqual(
f['subject'].as_textarea(),
'<textarea rows="10" cols="40" name="subject" required>Hello</textarea>'
)
self.assertHTMLEqual(
f['message'].as_text(),
'<input type="text" name="message" value="I love you." required>',
)
self.assertHTMLEqual(f['message'].as_hidden(), '<input type="hidden" name="message" value="I love you.">')
def test_forms_with_choices(self):
# For a form with a <select>, use ChoiceField:
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# A subtlety: If one of the choices' value is the empty string and the form is
# unbound, then the <option> for the empty-string choice will get selected.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('', '------'), ('P', 'Python'), ('J', 'Java')])
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language" required>
<option value="" selected>------</option>
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
# You can specify widget attributes in the Widget constructor.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')], widget=Select(attrs={'class': 'foo'}))
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# When passing a custom widget instance to ChoiceField, note that setting
# 'choices' on the widget is meaningless. The widget will use the choices
# defined on the Field, not the ones defined on the Widget.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField(
choices=[('P', 'Python'), ('J', 'Java')],
widget=Select(choices=[('R', 'Ruby'), ('P', 'Perl')], attrs={'class': 'foo'}),
)
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
f = FrameworkForm({'name': 'Django', 'language': 'P'}, auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select class="foo" name="language">
<option value="P" selected>Python</option>
<option value="J">Java</option>
</select>""")
# You can set a ChoiceField's choices after the fact.
class FrameworkForm(Form):
name = CharField()
language = ChoiceField()
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<select name="language">
</select>""")
f.fields['language'].choices = [('P', 'Python'), ('J', 'Java')]
self.assertHTMLEqual(str(f['language']), """<select name="language">
<option value="P">Python</option>
<option value="J">Java</option>
</select>""")
def test_forms_with_radio(self):
# Add widget=RadioSelect to use that widget with a ChoiceField.
f = FrameworkForm(auto_id=False)
self.assertHTMLEqual(str(f['language']), """<div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div>""")
self.assertHTMLEqual(f.as_table(), """<tr><th>Name:</th><td><input type="text" name="name" required></td></tr>
<tr><th>Language:</th><td><div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></td></tr>""")
self.assertHTMLEqual(f.as_ul(), """<li>Name: <input type="text" name="name" required></li>
<li>Language: <div>
<div><label><input type="radio" name="language" value="P" required> Python</label></div>
<div><label><input type="radio" name="language" value="J" required> Java</label></div>
</div></li>""")
# Regarding auto_id and <label>, RadioSelect is a special case. Each radio button
# gets a distinct ID, formed by appending an underscore plus the button's
# zero-based index.
f = FrameworkForm(auto_id='id_%s')
self.assertHTMLEqual(
str(f['language']),
"""<div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div>"""
)
# When RadioSelect is used with auto_id, and the whole form is printed
# using either as_table() or as_ul(), the label for the RadioSelect
# will **not** point to the ID of the *first* radio button to improve
# accessibility for screen reader users.
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><label for="id_name">Name:</label></th><td><input type="text" name="name" id="id_name" required></td></tr>
<tr><th><label>Language:</label></th><td><div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></li>"""
)
self.assertHTMLEqual(
f.as_p(),
"""<p><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></p>
<p><label>Language:</label> <div id="id_language">
<div><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
Python</label></div>
<div><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
Java</label></div>
</div></p>"""
)
def test_form_with_iterable_boundfield(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm(auto_id=False)
self.assertHTMLEqual(
'\n'.join(str(bf) for bf in f['name']),
"""<label><input type="radio" name="name" value="john" required> John</label>
<label><input type="radio" name="name" value="paul" required> Paul</label>
<label><input type="radio" name="name" value="george" required> George</label>
<label><input type="radio" name="name" value="ringo" required> Ringo</label>"""
)
self.assertHTMLEqual(
'\n'.join('<div>%s</div>' % bf for bf in f['name']),
"""<div><label><input type="radio" name="name" value="john" required> John</label></div>
<div><label><input type="radio" name="name" value="paul" required> Paul</label></div>
<div><label><input type="radio" name="name" value="george" required> George</label></div>
<div><label><input type="radio" name="name" value="ringo" required> Ringo</label></div>"""
)
def test_form_with_iterable_boundfield_id(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
fields = list(BeatleForm()['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, 'id_name_0')
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(
fields[0].tag(),
'<input type="radio" name="name" value="john" id="id_name_0" required>'
)
self.assertHTMLEqual(
str(fields[0]),
'<label for="id_name_0"><input type="radio" name="name" '
'value="john" id="id_name_0" required> John</label>'
)
self.assertEqual(fields[1].id_for_label, 'id_name_1')
self.assertEqual(fields[1].choice_label, 'Paul')
self.assertHTMLEqual(
fields[1].tag(),
'<input type="radio" name="name" value="paul" id="id_name_1" required>'
)
self.assertHTMLEqual(
str(fields[1]),
'<label for="id_name_1"><input type="radio" name="name" '
'value="paul" id="id_name_1" required> Paul</label>'
)
def test_iterable_boundfield_select(self):
class BeatleForm(Form):
name = ChoiceField(choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')])
fields = list(BeatleForm(auto_id=False)['name'])
self.assertEqual(len(fields), 4)
self.assertEqual(fields[0].id_for_label, None)
self.assertEqual(fields[0].choice_label, 'John')
self.assertHTMLEqual(fields[0].tag(), '<option value="john">John</option>')
self.assertHTMLEqual(str(fields[0]), '<option value="john">John</option>')
def test_form_with_noniterable_boundfield(self):
# You can iterate over any BoundField, not just those with widget=RadioSelect.
class BeatleForm(Form):
name = CharField()
f = BeatleForm(auto_id=False)
self.assertHTMLEqual('\n'.join(str(bf) for bf in f['name']), '<input type="text" name="name" required>')
def test_boundfield_slice(self):
class BeatleForm(Form):
name = ChoiceField(
choices=[('john', 'John'), ('paul', 'Paul'), ('george', 'George'), ('ringo', 'Ringo')],
widget=RadioSelect,
)
f = BeatleForm()
bf = f['name']
self.assertEqual(
[str(item) for item in bf[1:]],
[str(bf[1]), str(bf[2]), str(bf[3])],
)
def test_boundfield_invalid_index(self):
class TestForm(Form):
name = ChoiceField(choices=[])
field = TestForm()['name']
msg = 'BoundField indices must be integers or slices, not str.'
with self.assertRaisesMessage(TypeError, msg):
field['foo']
def test_boundfield_bool(self):
"""BoundField without any choices (subwidgets) evaluates to True."""
class TestForm(Form):
name = ChoiceField(choices=[])
self.assertIs(bool(TestForm()['name']), True)
def test_forms_with_multiple_choice(self):
# MultipleChoiceField is a special case, as its data is required to be a list:
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField()
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
</select>""")
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P">Paul McCartney</option>
</select>""")
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(str(f['name']), '<input type="text" name="name" value="Yesterday" required>')
self.assertHTMLEqual(str(f['composers']), """<select multiple name="composers" required>
<option value="J">John Lennon</option>
<option value="P" selected>Paul McCartney</option>
</select>""")
def test_form_with_disabled_fields(self):
class PersonForm(Form):
name = CharField()
birthday = DateField(disabled=True)
class PersonFormFieldInitial(Form):
name = CharField()
birthday = DateField(disabled=True, initial=datetime.date(1974, 8, 16))
# Disabled fields are generally not transmitted by user agents.
# The value from the form's initial data is used.
f1 = PersonForm({'name': 'John Doe'}, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial({'name': 'John Doe'})
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Values provided in the form's data are ignored.
data = {'name': 'John Doe', 'birthday': '1984-11-10'}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertTrue(form.is_valid())
self.assertEqual(
form.cleaned_data,
{'birthday': datetime.date(1974, 8, 16), 'name': 'John Doe'}
)
# Initial data remains present on invalid forms.
data = {}
f1 = PersonForm(data, initial={'birthday': datetime.date(1974, 8, 16)})
f2 = PersonFormFieldInitial(data)
for form in (f1, f2):
self.assertFalse(form.is_valid())
self.assertEqual(form['birthday'].value(), datetime.date(1974, 8, 16))
def test_hidden_data(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')])
# MultipleChoiceField rendered as_hidden() is a special case. Because it can
# have multiple values, its as_hidden() renders multiple <input type="hidden">
# tags.
f = SongForm({'name': 'Yesterday', 'composers': ['P']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), '<input type="hidden" name="composers" value="P">')
f = SongForm({'name': 'From Me To You', 'composers': ['P', 'J']}, auto_id=False)
self.assertHTMLEqual(f['composers'].as_hidden(), """<input type="hidden" name="composers" value="P">
<input type="hidden" name="composers" value="J">""")
# DateTimeField rendered as_hidden() is special too
class MessageForm(Form):
when = SplitDateTimeField()
f = MessageForm({'when_0': '1992-01-01', 'when_1': '01:01'})
self.assertTrue(f.is_valid())
self.assertHTMLEqual(
str(f['when']),
'<input type="text" name="when_0" value="1992-01-01" id="id_when_0" required>'
'<input type="text" name="when_1" value="01:01" id="id_when_1" required>'
)
self.assertHTMLEqual(
f['when'].as_hidden(),
'<input type="hidden" name="when_0" value="1992-01-01" id="id_when_0">'
'<input type="hidden" name="when_1" value="01:01" id="id_when_1">'
)
def test_multiple_choice_checkbox(self):
# MultipleChoiceField can also be used with the CheckboxSelectMultiple widget.
f = SongForm(auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
f = SongForm({'composers': ['J', 'P']}, auto_id=False)
self.assertHTMLEqual(str(f['composers']), """<div>
<div><label><input checked type="checkbox" name="composers" value="J"> John Lennon</label></div>
<div><label><input checked type="checkbox" name="composers" value="P"> Paul McCartney</label></div>
</div>""")
def test_checkbox_auto_id(self):
# Regarding auto_id, CheckboxSelectMultiple is a special case. Each checkbox
# gets a distinct ID, formed by appending an underscore plus the checkbox's
# zero-based index.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
f = SongForm(auto_id='%s_id')
self.assertHTMLEqual(
str(f['composers']),
"""<div id="composers_id">
<div><label for="composers_id_0">
<input type="checkbox" name="composers" value="J" id="composers_id_0"> John Lennon</label></div>
<div><label for="composers_id_1">
<input type="checkbox" name="composers" value="P" id="composers_id_1"> Paul McCartney</label></div>
</div>"""
)
def test_multiple_choice_list_data(self):
# Data for a MultipleChoiceField should be a list. QueryDict and
# MultiValueDict conveniently work with this.
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
data = {'name': 'Yesterday', 'composers': ['J', 'P']}
f = SongForm(data)
self.assertEqual(f.errors, {})
data = QueryDict('name=Yesterday&composers=J&composers=P')
f = SongForm(data)
self.assertEqual(f.errors, {})
data = MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']})
f = SongForm(data)
self.assertEqual(f.errors, {})
# SelectMultiple uses ducktyping so that MultiValueDictLike.getlist()
# is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_multiple_hidden(self):
class SongForm(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=CheckboxSelectMultiple,
)
# The MultipleHiddenInput widget renders multiple values as hidden fields.
class SongFormHidden(Form):
name = CharField()
composers = MultipleChoiceField(
choices=[('J', 'John Lennon'), ('P', 'Paul McCartney')],
widget=MultipleHiddenInput,
)
f = SongFormHidden(MultiValueDict({'name': ['Yesterday'], 'composers': ['J', 'P']}), auto_id=False)
self.assertHTMLEqual(
f.as_ul(),
"""<li>Name: <input type="text" name="name" value="Yesterday" required>
<input type="hidden" name="composers" value="J">
<input type="hidden" name="composers" value="P"></li>"""
)
# When using CheckboxSelectMultiple, the framework expects a list of input and
# returns a list of input.
f = SongForm({'name': 'Yesterday'}, auto_id=False)
self.assertEqual(f.errors['composers'], ['This field is required.'])
f = SongForm({'name': 'Yesterday', 'composers': ['J']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
f = SongForm({'name': 'Yesterday', 'composers': ['J', 'P']}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J', 'P'])
self.assertEqual(f.cleaned_data['name'], 'Yesterday')
# MultipleHiddenInput uses ducktyping so that
# MultiValueDictLike.getlist() is called.
f = SongForm(MultiValueDictLike({'name': 'Yesterday', 'composers': 'J'}))
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['composers'], ['J'])
def test_escaping(self):
# Validation errors are HTML-escaped when output as HTML.
class EscapingForm(Form):
special_name = CharField(label="<em>Special</em> Field")
special_safe_name = CharField(label=mark_safe("<em>Special</em> Field"))
def clean_special_name(self):
raise ValidationError("Something's wrong with '%s'" % self.cleaned_data['special_name'])
def clean_special_safe_name(self):
raise ValidationError(
mark_safe("'<b>%s</b>' is a safe string" % self.cleaned_data['special_safe_name'])
)
f = EscapingForm({
'special_name':
"Nothing to escape",
'special_safe_name': "Nothing to escape",
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Nothing to escape'</li></ul>
<input type="text" name="special_name" value="Nothing to escape" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b>Nothing to escape</b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="Nothing to escape" required></td></tr>"""
)
f = EscapingForm({
'special_name': "Should escape < & > and <script>alert('xss')</script>",
'special_safe_name': "<i>Do not escape</i>"
}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>Something's wrong with 'Should escape < & > and
<script>alert('xss')</script>'</li></ul>
<input type="text" name="special_name"
value="Should escape < & > and <script>alert('xss')</script>" required></td></tr>
<tr><th><em>Special</em> Field:</th><td>
<ul class="errorlist"><li>'<b><i>Do not escape</i></b>' is a safe string</li></ul>
<input type="text" name="special_safe_name" value="<i>Do not escape</i>" required></td></tr>"""
)
def test_validating_multiple_fields(self):
# There are a couple of ways to do multiple-field validation. If you want the
# validation message to be associated with a particular field, implement the
# clean_XXX() method on the Form, where XXX is the field name. As in
# Field.clean(), the clean_XXX() method should return the cleaned value. In the
# clean_XXX() method, you have access to self.cleaned_data, which is a dictionary
# of all the data that has been cleaned *so far*, in order by the fields,
# including the current field (e.g., the field XXX if you're in clean_XXX()).
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean_password2(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data['password2']
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['password2'], ['Please make sure your passwords match.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
# Another way of doing multiple-field validation is by implementing the
# Form's clean() method. Usually ValidationError raised by that method
# will not be associated with a particular field and will have a
# special-case association with the field named '__all__'. It's
# possible to associate the errors to particular field with the
# Form.add_error() method or by passing a dictionary that maps each
# field to one or more errors.
#
# Note that in Form.clean(), you have access to self.cleaned_data, a
# dictionary of all the fields/values that have *not* raised a
# ValidationError. Also note Form.clean() is required to return a
# dictionary of all clean data.
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
# Test raising a ValidationError as NON_FIELD_ERRORS.
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError('Please make sure your passwords match.')
# Test raising ValidationError that targets multiple fields.
errors = {}
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE':
errors['password1'] = 'Forbidden value.'
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE':
errors['password2'] = ['Forbidden value.']
if errors:
raise ValidationError(errors)
# Test Form.add_error()
if self.cleaned_data.get('password1') == 'FORBIDDEN_VALUE2':
self.add_error(None, 'Non-field error 1.')
self.add_error('password1', 'Forbidden value 2.')
if self.cleaned_data.get('password2') == 'FORBIDDEN_VALUE2':
self.add_error('password2', 'Forbidden value 2.')
raise ValidationError('Non-field error 2.')
return self.cleaned_data
f = UserRegistration(auto_id=False)
self.assertEqual(f.errors, {})
f = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
"""<tr><th>Username:</th><td>
<ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="username" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="password" name="password2" required></td></tr>"""
)
self.assertEqual(f.errors['username'], ['This field is required.'])
self.assertEqual(f.errors['password1'], ['This field is required.'])
self.assertEqual(f.errors['password2'], ['This field is required.'])
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'bar'}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Please make sure your passwords match.'])
self.assertHTMLEqual(
f.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>Please make sure your passwords match.</li></ul></td></tr>
<tr><th>Username:</th><td><input type="text" name="username" value="adrian" maxlength="10" required></td></tr>
<tr><th>Password1:</th><td><input type="password" name="password1" required></td></tr>
<tr><th>Password2:</th><td><input type="password" name="password2" required></td></tr>"""
)
self.assertHTMLEqual(
f.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>Please make sure your passwords match.</li></ul></li>
<li>Username: <input type="text" name="username" value="adrian" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Password2: <input type="password" name="password2" required></li>"""
)
f = UserRegistration({'username': 'adrian', 'password1': 'foo', 'password2': 'foo'}, auto_id=False)
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['username'], 'adrian')
self.assertEqual(f.cleaned_data['password1'], 'foo')
self.assertEqual(f.cleaned_data['password2'], 'foo')
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE',
'password2': 'FORBIDDEN_VALUE',
}, auto_id=False)
self.assertEqual(f.errors['password1'], ['Forbidden value.'])
self.assertEqual(f.errors['password2'], ['Forbidden value.'])
f = UserRegistration({
'username': 'adrian',
'password1': 'FORBIDDEN_VALUE2',
'password2': 'FORBIDDEN_VALUE2',
}, auto_id=False)
self.assertEqual(f.errors['__all__'], ['Non-field error 1.', 'Non-field error 2.'])
self.assertEqual(f.errors['password1'], ['Forbidden value 2.'])
self.assertEqual(f.errors['password2'], ['Forbidden value 2.'])
with self.assertRaisesMessage(ValueError, "has no field named"):
f.add_error('missing_field', 'Some error.')
def test_update_error_dict(self):
class CodeForm(Form):
code = CharField(max_length=10)
def clean(self):
try:
raise ValidationError({'code': [ValidationError('Code error 1.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': [ValidationError('Code error 2.')]})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError({'code': forms.ErrorList(['Code error 3.'])})
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError('Non-field error 1.')
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
try:
raise ValidationError([ValidationError('Non-field error 2.')])
except ValidationError as e:
self._errors = e.update_error_dict(self._errors)
# The newly added list of errors is an instance of ErrorList.
for field, error_list in self._errors.items():
if not isinstance(error_list, self.error_class):
self._errors[field] = self.error_class(error_list)
form = CodeForm({'code': 'hello'})
# Trigger validation.
self.assertFalse(form.is_valid())
# update_error_dict didn't lose track of the ErrorDict type.
self.assertIsInstance(form._errors, forms.ErrorDict)
self.assertEqual(dict(form.errors), {
'code': ['Code error 1.', 'Code error 2.', 'Code error 3.'],
NON_FIELD_ERRORS: ['Non-field error 1.', 'Non-field error 2.'],
})
def test_has_error(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput, min_length=5)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (self.cleaned_data.get('password1') and self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']):
raise ValidationError(
'Please make sure your passwords match.',
code='password_mismatch',
)
f = UserRegistration(data={})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'required'))
self.assertFalse(f.has_error('password1', 'anything'))
f = UserRegistration(data={'password1': 'Hi', 'password2': 'Hi'})
self.assertTrue(f.has_error('password1'))
self.assertTrue(f.has_error('password1', 'min_length'))
self.assertFalse(f.has_error('password1', 'anything'))
self.assertFalse(f.has_error('password2'))
self.assertFalse(f.has_error('password2', 'anything'))
f = UserRegistration(data={'password1': 'Bonjour', 'password2': 'Hello'})
self.assertFalse(f.has_error('password1'))
self.assertFalse(f.has_error('password1', 'required'))
self.assertTrue(f.has_error(NON_FIELD_ERRORS))
self.assertTrue(f.has_error(NON_FIELD_ERRORS, 'password_mismatch'))
self.assertFalse(f.has_error(NON_FIELD_ERRORS, 'anything'))
def test_html_output_with_hidden_input_field_errors(self):
class TestForm(Form):
hidden_input = CharField(widget=HiddenInput)
def clean(self):
self.add_error(None, 'Form error')
f = TestForm(data={})
error_dict = {
'hidden_input': ['This field is required.'],
'__all__': ['Form error'],
}
self.assertEqual(f.errors, error_dict)
f.as_table()
self.assertEqual(f.errors, error_dict)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<input type="hidden" name="hidden_input" id="id_hidden_input"></td></tr>',
)
self.assertHTMLEqual(
f.as_ul(),
'<li><ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<input type="hidden" name="hidden_input" id="id_hidden_input"></li>',
)
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield"><li>Form error</li>'
'<li>(Hidden field hidden_input) This field is required.</li></ul>'
'<p><input type="hidden" name="hidden_input" id="id_hidden_input"></p>',
)
def test_dynamic_construction(self):
# It's possible to construct a Form dynamically by adding to the self.fields
# dictionary in __init__(). Don't forget to call Form.__init__() within the
# subclass' __init__().
class Person(Form):
first_name = CharField()
last_name = CharField()
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields['birthday'] = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" required></td></tr>"""
)
# Instances of a dynamic Form do not persist fields from one Form instance to
# the next.
class MyForm(Form):
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
class MyForm(Form):
default_field_1 = CharField()
default_field_2 = CharField()
def __init__(self, data=None, auto_id=False, field_list=[]):
Form.__init__(self, data, auto_id=auto_id)
for field in field_list:
self.fields[field[0]] = field[1]
field_list = [('field1', CharField()), ('field2', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>"""
)
field_list = [('field3', CharField()), ('field4', CharField())]
my_form = MyForm(field_list=field_list)
self.assertHTMLEqual(
my_form.as_table(),
"""<tr><th>Default field 1:</th><td><input type="text" name="default_field_1" required></td></tr>
<tr><th>Default field 2:</th><td><input type="text" name="default_field_2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>"""
)
# Similarly, changes to field attributes do not persist from one Form instance
# to the next.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
def __init__(self, names_required=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if names_required:
self.fields['first_name'].required = True
self.fields['first_name'].widget.attrs['class'] = 'required'
self.fields['last_name'].required = True
self.fields['last_name'].widget.attrs['class'] = 'required'
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
f = Person(names_required=True)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (True, True))
self.assertEqual(
f['first_name'].field.widget.attrs,
f['last_name'].field.widget.attrs,
({'class': 'reuired'}, {'class': 'required'})
)
f = Person(names_required=False)
self.assertEqual(f['first_name'].field.required, f['last_name'].field.required, (False, False))
self.assertEqual(f['first_name'].field.widget.attrs, f['last_name'].field.widget.attrs, ({}, {}))
class Person(Form):
first_name = CharField(max_length=30)
last_name = CharField(max_length=30)
def __init__(self, name_max_length=None, *args, **kwargs):
super().__init__(*args, **kwargs)
if name_max_length:
self.fields['first_name'].max_length = name_max_length
self.fields['last_name'].max_length = name_max_length
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
f = Person(name_max_length=20)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (20, 20))
f = Person(name_max_length=None)
self.assertEqual(f['first_name'].field.max_length, f['last_name'].field.max_length, (30, 30))
# Similarly, choices do not persist from one Form instance to the next.
# Refs #15127.
class Person(Form):
first_name = CharField(required=False)
last_name = CharField(required=False)
gender = ChoiceField(choices=(('f', 'Female'), ('m', 'Male')))
def __init__(self, allow_unspec_gender=False, *args, **kwargs):
super().__init__(*args, **kwargs)
if allow_unspec_gender:
self.fields['gender'].choices += (('u', 'Unspecified'),)
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
f = Person(allow_unspec_gender=True)
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male'), ('u', 'Unspecified')])
f = Person()
self.assertEqual(f['gender'].field.choices, [('f', 'Female'), ('m', 'Male')])
def test_validators_independence(self):
"""
The list of form field validators can be modified without polluting
other forms.
"""
class MyForm(Form):
myfield = CharField(max_length=25)
f1 = MyForm()
f2 = MyForm()
f1.fields['myfield'].validators[0] = MaxValueValidator(12)
self.assertNotEqual(f1.fields['myfield'].validators[0], f2.fields['myfield'].validators[0])
def test_hidden_widget(self):
# HiddenInput widgets are displayed differently in the as_table(), as_ul())
# and as_p() output of a Form -- their verbose names are not displayed, and a
# separate row is not displayed. They're displayed in the last row of the
# form, directly after that row's form element.
class Person(Form):
first_name = CharField()
last_name = CharField()
hidden_text = CharField(widget=HiddenInput)
birthday = DateField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>First name:</th><td><input type="text" name="first_name" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" required></td></tr>
<tr><th>Birthday:</th>
<td><input type="text" name="birthday" required><input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(), """<p>First name: <input type="text" name="first_name" required></p>
<p>Last name: <input type="text" name="last_name" required></p>
<p>Birthday: <input type="text" name="birthday" required><input type="hidden" name="hidden_text"></p>"""
)
# With auto_id set, a HiddenInput still gets an ID, but it doesn't get a label.
p = Person(auto_id='id_%s')
self.assertHTMLEqual(
p.as_table(),
"""<tr><th><label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" id="id_first_name" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" id="id_last_name" required></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></li>
<li><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></li>
<li><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p><label for="id_first_name">First name:</label>
<input type="text" name="first_name" id="id_first_name" required></p>
<p><label for="id_last_name">Last name:</label>
<input type="text" name="last_name" id="id_last_name" required></p>
<p><label for="id_birthday">Birthday:</label>
<input type="text" name="birthday" id="id_birthday" required>
<input type="hidden" name="hidden_text" id="id_hidden_text"></p>"""
)
# If a field with a HiddenInput has errors, the as_table() and as_ul() output
# will include the error message(s) with the text "(Hidden field [fieldname]) "
# prepended. This message is displayed at the top of the output, regardless of
# its field's order in the form.
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'}, auto_id=False)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2">
<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></td></tr>
<tr><th>First name:</th><td><input type="text" name="first_name" value="John" required></td></tr>
<tr><th>Last name:</th><td><input type="text" name="last_name" value="Lennon" required></td></tr>
<tr><th>Birthday:</th><td><input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></td></tr>"""
)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul></li>
<li>First name: <input type="text" name="first_name" value="John" required></li>
<li>Last name: <input type="text" name="last_name" value="Lennon" required></li>
<li>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field hidden_text) This field is required.</li></ul>
<p>First name: <input type="text" name="first_name" value="John" required></p>
<p>Last name: <input type="text" name="last_name" value="Lennon" required></p>
<p>Birthday: <input type="text" name="birthday" value="1940-10-9" required>
<input type="hidden" name="hidden_text"></p>"""
)
# A corner case: It's possible for a form to have only HiddenInputs.
class TestForm(Form):
foo = CharField(widget=HiddenInput)
bar = CharField(widget=HiddenInput)
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_ul(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
self.assertHTMLEqual(p.as_p(), '<input type="hidden" name="foo"><input type="hidden" name="bar">')
def test_field_order(self):
# A Form's fields are displayed in the same order in which they were defined.
class TestForm(Form):
field1 = CharField()
field2 = CharField()
field3 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field7 = CharField()
field8 = CharField()
field9 = CharField()
field10 = CharField()
field11 = CharField()
field12 = CharField()
field13 = CharField()
field14 = CharField()
p = TestForm(auto_id=False)
self.assertHTMLEqual(p.as_table(), """<tr><th>Field1:</th><td><input type="text" name="field1" required></td></tr>
<tr><th>Field2:</th><td><input type="text" name="field2" required></td></tr>
<tr><th>Field3:</th><td><input type="text" name="field3" required></td></tr>
<tr><th>Field4:</th><td><input type="text" name="field4" required></td></tr>
<tr><th>Field5:</th><td><input type="text" name="field5" required></td></tr>
<tr><th>Field6:</th><td><input type="text" name="field6" required></td></tr>
<tr><th>Field7:</th><td><input type="text" name="field7" required></td></tr>
<tr><th>Field8:</th><td><input type="text" name="field8" required></td></tr>
<tr><th>Field9:</th><td><input type="text" name="field9" required></td></tr>
<tr><th>Field10:</th><td><input type="text" name="field10" required></td></tr>
<tr><th>Field11:</th><td><input type="text" name="field11" required></td></tr>
<tr><th>Field12:</th><td><input type="text" name="field12" required></td></tr>
<tr><th>Field13:</th><td><input type="text" name="field13" required></td></tr>
<tr><th>Field14:</th><td><input type="text" name="field14" required></td></tr>""")
def test_explicit_field_order(self):
class TestFormParent(Form):
field1 = CharField()
field2 = CharField()
field4 = CharField()
field5 = CharField()
field6 = CharField()
field_order = ['field6', 'field5', 'field4', 'field2', 'field1']
class TestForm(TestFormParent):
field3 = CharField()
field_order = ['field2', 'field4', 'field3', 'field5', 'field6']
class TestFormRemove(TestForm):
field1 = None
class TestFormMissing(TestForm):
field_order = ['field2', 'field4', 'field3', 'field5', 'field6', 'field1']
field1 = None
class TestFormInit(TestFormParent):
field3 = CharField()
field_order = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.order_fields(field_order=TestForm.field_order)
p = TestFormParent()
self.assertEqual(list(p.fields), TestFormParent.field_order)
p = TestFormRemove()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestFormMissing()
self.assertEqual(list(p.fields), TestForm.field_order)
p = TestForm()
self.assertEqual(list(p.fields), TestFormMissing.field_order)
p = TestFormInit()
order = [*TestForm.field_order, 'field1']
self.assertEqual(list(p.fields), order)
TestForm.field_order = ['unknown']
p = TestForm()
self.assertEqual(list(p.fields), ['field1', 'field2', 'field4', 'field5', 'field6', 'field3'])
def test_form_html_attributes(self):
# Some Field classes have an effect on the HTML attributes of their associated
# Widget. If you set max_length in a CharField and its associated widget is
# either a TextInput or PasswordInput, then the widget's rendered HTML will
# include the "maxlength" attribute.
class UserRegistration(Form):
username = CharField(max_length=10) # uses TextInput by default
password = CharField(max_length=10, widget=PasswordInput)
realname = CharField(max_length=10, widget=TextInput) # redundantly define widget, just to test
address = CharField() # no max_length defined here
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>
<li>Realname: <input type="text" name="realname" maxlength="10" required></li>
<li>Address: <input type="text" name="address" required></li>"""
)
# If you specify a custom "attrs" that includes the "maxlength" attribute,
# the Field's max_length attribute will override whatever "maxlength" you specify
# in "attrs".
class UserRegistration(Form):
username = CharField(max_length=10, widget=TextInput(attrs={'maxlength': 20}))
password = CharField(max_length=10, widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" maxlength="10" required></li>"""
)
def test_specifying_labels(self):
# You can specify the label for a field by using the 'label' argument to a Field
# class. If you don't specify 'label', Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
class UserRegistration(Form):
username = CharField(max_length=10, label='Your username')
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput, label='Contraseña (de nuevo)')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Your username: <input type="text" name="username" maxlength="10" required></li>
<li>Password1: <input type="password" name="password1" required></li>
<li>Contraseña (de nuevo): <input type="password" name="password2" required></li>"""
)
# Labels for as_* methods will only end in a colon if they don't end in other
# punctuation already.
class Questions(Form):
q1 = CharField(label='The first question')
q2 = CharField(label='What is your name?')
q3 = CharField(label='The answer to life is:')
q4 = CharField(label='Answer this question!')
q5 = CharField(label='The last question. Period.')
self.assertHTMLEqual(
Questions(auto_id=False).as_p(),
"""<p>The first question: <input type="text" name="q1" required></p>
<p>What is your name? <input type="text" name="q2" required></p>
<p>The answer to life is: <input type="text" name="q3" required></p>
<p>Answer this question! <input type="text" name="q4" required></p>
<p>The last question. Period. <input type="text" name="q5" required></p>"""
)
self.assertHTMLEqual(
Questions().as_p(),
"""<p><label for="id_q1">The first question:</label> <input type="text" name="q1" id="id_q1" required></p>
<p><label for="id_q2">What is your name?</label> <input type="text" name="q2" id="id_q2" required></p>
<p><label for="id_q3">The answer to life is:</label> <input type="text" name="q3" id="id_q3" required></p>
<p><label for="id_q4">Answer this question!</label> <input type="text" name="q4" id="id_q4" required></p>
<p><label for="id_q5">The last question. Period.</label> <input type="text" name="q5" id="id_q5" required></p>"""
)
# If a label is set to the empty string for a field, that field won't get a label.
class UserRegistration(Form):
username = CharField(max_length=10, label='')
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(p.as_ul(), """<li> <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>""")
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li> <input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
# If label is None, Django will auto-create the label from the field name. This
# is default behavior.
class UserRegistration(Form):
username = CharField(max_length=10, label=None)
password = CharField(widget=PasswordInput)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_username">Username:</label>
<input id="id_username" type="text" name="username" maxlength="10" required></li>
<li><label for="id_password">Password:</label>
<input type="password" name="password" id="id_password" required></li>"""
)
def test_label_suffix(self):
# You can specify the 'label_suffix' argument to a Form class to modify the
# punctuation symbol used at the end of a label. By default, the colon (:) is
# used, and is only appended to the label if the label doesn't already end with a
# punctuation symbol: ., !, ? or :. If you specify a different suffix, it will
# be appended regardless of the last character of the label.
class FavoriteForm(Form):
color = CharField(label='Favorite color?')
animal = CharField(label='Favorite animal')
answer = CharField(label='Secret answer', label_suffix=' =')
f = FavoriteForm(auto_id=False)
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal: <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='?')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal? <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='')
self.assertHTMLEqual(f.as_ul(), """<li>Favorite color? <input type="text" name="color" required></li>
<li>Favorite animal <input type="text" name="animal" required></li>
<li>Secret answer = <input type="text" name="answer" required></li>""")
f = FavoriteForm(auto_id=False, label_suffix='\u2192')
self.assertHTMLEqual(
f.as_ul(),
'<li>Favorite color? <input type="text" name="color" required></li>\n'
'<li>Favorite animal\u2192 <input type="text" name="animal" required></li>\n'
'<li>Secret answer = <input type="text" name="answer" required></li>'
)
def test_initial_data(self):
# You can specify initial data for a field by using the 'initial' argument to a
# Field class. This initial data is displayed when a Form is rendered with *no*
# data. It is not displayed when a Form is rendered with any data (including an
# empty dictionary). Also, the initial value is *not* used if data for a
# particular required field isn't provided.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# Here, we're submitting data, so the initial value will *not* be displayed.
p = UserRegistration({}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# An 'initial' value is *not* used as a fallback if data is not provided. In this
# example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
def test_dynamic_initial_data(self):
# The previous technique dealt with "hard-coded" initial data, but it's also
# possible to specify initial data after you've already created the Form class
# (i.e., at runtime). Use the 'initial' parameter to the Form constructor. This
# should be a dictionary containing initial values for one or more fields in the
# form, keyed by field name.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration(initial={'username': 'stephane'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
p = UserRegistration({'username': 'foo'}, initial={'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(), """<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>"""
)
# A dynamic 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': 'django'})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial='django')
password = CharField(widget=PasswordInput)
p = UserRegistration(initial={'username': 'babik'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="babik" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>"""
)
def test_callable_initial_data(self):
# The previous technique dealt with raw values as initial data, but it's also
# possible to specify callable data.
class UserRegistration(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')])
# We need to define functions that get called later.)
def initial_django():
return 'django'
def initial_stephane():
return 'stephane'
def initial_options():
return ['f', 'b']
def initial_other_options():
return ['b', 'w']
# Here, we're not submitting any data, so the initial value will be displayed.)
p = UserRegistration(initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# The 'initial' parameter is meaningless if you pass data.
p = UserRegistration({}, initial={'username': initial_django, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration({'username': ''}, initial={'username': initial_django}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist"><li>This field is required.</li></ul>
Username: <input type="text" name="username" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b">bar</option>
<option value="w">whiz</option>
</select></li>"""
)
p = UserRegistration(
{'username': 'foo', 'options': ['f', 'b']}, initial={'username': initial_django}, auto_id=False
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
# A callable 'initial' value is *not* used as a fallback if data is not provided.
# In this example, we don't provide a value for 'username', and the form raises a
# validation error rather than using the initial value for 'username'.
p = UserRegistration({'password': 'secret'}, initial={'username': initial_django, 'options': initial_options})
self.assertEqual(p.errors['username'], ['This field is required.'])
self.assertFalse(p.is_valid())
# If a Form defines 'initial' *and* 'initial' is passed as a parameter to Form(),
# then the latter will get precedence.
class UserRegistration(Form):
username = CharField(max_length=10, initial=initial_django)
password = CharField(widget=PasswordInput)
options = MultipleChoiceField(
choices=[('f', 'foo'), ('b', 'bar'), ('w', 'whiz')],
initial=initial_other_options,
)
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="django" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f">foo</option>
<option value="b" selected>bar</option>
<option value="w" selected>whiz</option>
</select></li>"""
)
p = UserRegistration(initial={'username': initial_stephane, 'options': initial_options}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="stephane" maxlength="10" required></li>
<li>Password: <input type="password" name="password" required></li>
<li>Options: <select multiple name="options" required>
<option value="f" selected>foo</option>
<option value="b" selected>bar</option>
<option value="w">whiz</option>
</select></li>"""
)
def test_get_initial_for_field(self):
now = datetime.datetime(2006, 10, 25, 14, 30, 45, 123456)
class PersonForm(Form):
first_name = CharField(initial='John')
last_name = CharField(initial='Doe')
age = IntegerField()
occupation = CharField(initial=lambda: 'Unknown')
dt_fixed = DateTimeField(initial=now)
dt_callable = DateTimeField(initial=lambda: now)
form = PersonForm(initial={'first_name': 'Jane'})
cases = [
('age', None),
('last_name', 'Doe'),
# Form.initial overrides Field.initial.
('first_name', 'Jane'),
# Callables are evaluated.
('occupation', 'Unknown'),
# Microseconds are removed from datetimes.
('dt_fixed', datetime.datetime(2006, 10, 25, 14, 30, 45)),
('dt_callable', datetime.datetime(2006, 10, 25, 14, 30, 45)),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
field = form.fields[field_name]
actual = form.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def test_changed_data(self):
class Person(Form):
first_name = CharField(initial='Hans')
last_name = CharField(initial='Greatel')
birthday = DateField(initial=datetime.date(1974, 8, 16))
p = Person(data={'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16'})
self.assertTrue(p.is_valid())
self.assertNotIn('first_name', p.changed_data)
self.assertIn('last_name', p.changed_data)
self.assertNotIn('birthday', p.changed_data)
# A field raising ValidationError is always in changed_data
class PedanticField(forms.Field):
def to_python(self, value):
raise ValidationError('Whatever')
class Person2(Person):
pedantic = PedanticField(initial='whatever', show_hidden_initial=True)
p = Person2(data={
'first_name': 'Hans', 'last_name': 'Scrmbl', 'birthday': '1974-08-16',
'initial-pedantic': 'whatever',
})
self.assertFalse(p.is_valid())
self.assertIn('pedantic', p.changed_data)
def test_boundfield_values(self):
# It's possible to get to the value which would be used for rendering
# the widget for a field by using the BoundField's value method.
class UserRegistration(Form):
username = CharField(max_length=10, initial='djangonaut')
password = CharField(widget=PasswordInput)
unbound = UserRegistration()
bound = UserRegistration({'password': 'foo'})
self.assertIsNone(bound['username'].value())
self.assertEqual(unbound['username'].value(), 'djangonaut')
self.assertEqual(bound['password'].value(), 'foo')
self.assertIsNone(unbound['password'].value())
def test_boundfield_initial_called_once(self):
"""
Multiple calls to BoundField().value() in an unbound form should return
the same result each time (#24391).
"""
class MyForm(Form):
name = CharField(max_length=10, initial=uuid.uuid4)
form = MyForm()
name = form['name']
self.assertEqual(name.value(), name.value())
# BoundField is also cached
self.assertIs(form['name'], name)
def test_boundfield_value_disabled_callable_initial(self):
class PersonForm(Form):
name = CharField(initial=lambda: 'John Doe', disabled=True)
# Without form data.
form = PersonForm()
self.assertEqual(form['name'].value(), 'John Doe')
# With form data. As the field is disabled, the value should not be
# affected by the form data.
form = PersonForm({})
self.assertEqual(form['name'].value(), 'John Doe')
def test_custom_boundfield(self):
class CustomField(CharField):
def get_bound_field(self, form, name):
return (form, name)
class SampleForm(Form):
name = CustomField()
f = SampleForm()
self.assertEqual(f['name'], (f, 'name'))
def test_initial_datetime_values(self):
now = datetime.datetime.now()
# Nix microseconds (since they should be ignored). #22502
now_no_ms = now.replace(microsecond=0)
if now == now_no_ms:
now = now.replace(microsecond=1)
def delayed_now():
return now
def delayed_now_time():
return now.time()
class HiddenInputWithoutMicrosec(HiddenInput):
supports_microseconds = False
class TextInputWithoutMicrosec(TextInput):
supports_microseconds = False
class DateTimeForm(Form):
# Test a non-callable.
fixed = DateTimeField(initial=now)
auto_timestamp = DateTimeField(initial=delayed_now)
auto_time_only = TimeField(initial=delayed_now_time)
supports_microseconds = DateTimeField(initial=delayed_now, widget=TextInput)
hi_default_microsec = DateTimeField(initial=delayed_now, widget=HiddenInput)
hi_without_microsec = DateTimeField(initial=delayed_now, widget=HiddenInputWithoutMicrosec)
ti_without_microsec = DateTimeField(initial=delayed_now, widget=TextInputWithoutMicrosec)
unbound = DateTimeForm()
cases = [
('fixed', now_no_ms),
('auto_timestamp', now_no_ms),
('auto_time_only', now_no_ms.time()),
('supports_microseconds', now),
('hi_default_microsec', now),
('hi_without_microsec', now_no_ms),
('ti_without_microsec', now_no_ms),
]
for field_name, expected in cases:
with self.subTest(field_name=field_name):
actual = unbound[field_name].value()
self.assertEqual(actual, expected)
# Also check get_initial_for_field().
field = unbound.fields[field_name]
actual = unbound.get_initial_for_field(field, field_name)
self.assertEqual(actual, expected)
def get_datetime_form_with_callable_initial(self, disabled, microseconds=0):
class FakeTime:
def __init__(self):
self.elapsed_seconds = 0
def now(self):
self.elapsed_seconds += 1
return datetime.datetime(
2006, 10, 25, 14, 30, 45 + self.elapsed_seconds,
microseconds,
)
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=FakeTime().now, disabled=disabled)
return DateTimeForm({})
def test_datetime_clean_disabled_callable_initial_microseconds(self):
"""
Cleaning a form with a disabled DateTimeField and callable initial
removes microseconds.
"""
form = self.get_datetime_form_with_callable_initial(
disabled=True, microseconds=123456,
)
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {
'dt': datetime.datetime(2006, 10, 25, 14, 30, 46),
})
def test_datetime_clean_disabled_callable_initial_bound_field(self):
"""
The cleaned value for a form with a disabled DateTimeField and callable
initial matches the bound field's cached initial value.
"""
form = self.get_datetime_form_with_callable_initial(disabled=True)
self.assertEqual(form.errors, {})
cleaned = form.cleaned_data['dt']
self.assertEqual(cleaned, datetime.datetime(2006, 10, 25, 14, 30, 46))
bf = form['dt']
self.assertEqual(cleaned, bf.initial)
def test_datetime_changed_data_callable_with_microseconds(self):
class DateTimeForm(forms.Form):
dt = DateTimeField(initial=lambda: datetime.datetime(2006, 10, 25, 14, 30, 45, 123456), disabled=True)
form = DateTimeForm({'dt': '2006-10-25 14:30:45'})
self.assertEqual(form.changed_data, [])
def test_help_text(self):
# You can specify descriptive text for a field by using the 'help_text' argument)
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput, help_text='Wählen Sie mit Bedacht.')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<p>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></p>
<p>Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><th>Username:</th><td><input type="text" name="username" maxlength="10" required><br>
<span class="helptext">e.g., [email protected]</span></td></tr>
<tr><th>Password:</th><td><input type="password" name="password" required><br>
<span class="helptext">Wählen Sie mit Bedacht.</span></td></tr>"""
)
# The help text is displayed whether or not data is provided for the form.
p = UserRegistration({'username': 'foo'}, auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" value="foo" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li><ul class="errorlist"><li>This field is required.</li></ul>
Password: <input type="password" name="password" required>
<span class="helptext">Wählen Sie mit Bedacht.</span></li>"""
)
# help_text is not displayed for hidden fields. It can be used for documentation
# purposes, though.
class UserRegistration(Form):
username = CharField(max_length=10, help_text='e.g., [email protected]')
password = CharField(widget=PasswordInput)
next = CharField(widget=HiddenInput, initial='/', help_text='Redirect destination')
p = UserRegistration(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>Username: <input type="text" name="username" maxlength="10" required>
<span class="helptext">e.g., [email protected]</span></li>
<li>Password: <input type="password" name="password" required>
<input type="hidden" name="next" value="/"></li>"""
)
def test_subclassing_forms(self):
# You can subclass a Form to add fields. The resulting form subclass will have
# all of the fields of the parent Form, plus whichever fields you define in the
# subclass.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Musician(Person):
instrument = CharField()
p = Person(auto_id=False)
self.assertHTMLEqual(
p.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>"""
)
m = Musician(auto_id=False)
self.assertHTMLEqual(
m.as_ul(),
"""<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Instrument: <input type="text" name="instrument" required></li>"""
)
# Yes, you can subclass multiple forms. The fields are added in the order in
# which the parent classes are listed.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
class Instrument(Form):
instrument = CharField()
class Beatle(Person, Instrument):
haircut_type = CharField()
b = Beatle(auto_id=False)
self.assertHTMLEqual(b.as_ul(), """<li>Instrument: <input type="text" name="instrument" required></li>
<li>First name: <input type="text" name="first_name" required></li>
<li>Last name: <input type="text" name="last_name" required></li>
<li>Birthday: <input type="text" name="birthday" required></li>
<li>Haircut type: <input type="text" name="haircut_type" required></li>""")
def test_forms_with_prefixes(self):
# Sometimes it's necessary to have multiple forms display on the same HTML page,
# or multiple copies of the same form. We can accomplish this with form prefixes.
# Pass the keyword argument 'prefix' to the Form constructor to use this feature.
# This value will be prepended to each HTML form field name. One way to think
# about this is "namespaces for HTML forms". Notice that in the data argument,
# each field's key has the prefix, in this case 'person1', prepended to the
# actual field name.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_person1-first_name">First name:</label>
<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required></li>
<li><label for="id_person1-last_name">Last name:</label>
<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required></li>
<li><label for="id_person1-birthday">Birthday:</label>
<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required></li>"""
)
self.assertHTMLEqual(
str(p['first_name']),
'<input type="text" name="person1-first_name" value="John" id="id_person1-first_name" required>'
)
self.assertHTMLEqual(
str(p['last_name']),
'<input type="text" name="person1-last_name" value="Lennon" id="id_person1-last_name" required>'
)
self.assertHTMLEqual(
str(p['birthday']),
'<input type="text" name="person1-birthday" value="1940-10-9" id="id_person1-birthday" required>'
)
self.assertEqual(p.errors, {})
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
# Let's try submitting some bad data to make sure form.errors and field.errors
# work as expected.
data = {
'person1-first_name': '',
'person1-last_name': '',
'person1-birthday': ''
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
self.assertEqual(p['first_name'].errors, ['This field is required.'])
# Accessing a nonexistent field.
with self.assertRaises(KeyError):
p['person1-first_name'].errors
# In this example, the data doesn't have a prefix, but the form requires it, so
# the form doesn't "see" the fields.
data = {
'first_name': 'John',
'last_name': 'Lennon',
'birthday': '1940-10-9'
}
p = Person(data, prefix='person1')
self.assertEqual(p.errors['first_name'], ['This field is required.'])
self.assertEqual(p.errors['last_name'], ['This field is required.'])
self.assertEqual(p.errors['birthday'], ['This field is required.'])
# With prefixes, a single data dictionary can hold data for multiple instances
# of the same form.
data = {
'person1-first_name': 'John',
'person1-last_name': 'Lennon',
'person1-birthday': '1940-10-9',
'person2-first_name': 'Jim',
'person2-last_name': 'Morrison',
'person2-birthday': '1943-12-8'
}
p1 = Person(data, prefix='person1')
self.assertTrue(p1.is_valid())
self.assertEqual(p1.cleaned_data['first_name'], 'John')
self.assertEqual(p1.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p1.cleaned_data['birthday'], datetime.date(1940, 10, 9))
p2 = Person(data, prefix='person2')
self.assertTrue(p2.is_valid())
self.assertEqual(p2.cleaned_data['first_name'], 'Jim')
self.assertEqual(p2.cleaned_data['last_name'], 'Morrison')
self.assertEqual(p2.cleaned_data['birthday'], datetime.date(1943, 12, 8))
# By default, forms append a hyphen between the prefix and the field name, but a
# form can alter that behavior by implementing the add_prefix() method. This
# method takes a field name and returns the prefixed field, according to
# self.prefix.
class Person(Form):
first_name = CharField()
last_name = CharField()
birthday = DateField()
def add_prefix(self, field_name):
return '%s-prefix-%s' % (self.prefix, field_name) if self.prefix else field_name
p = Person(prefix='foo')
self.assertHTMLEqual(
p.as_ul(),
"""<li><label for="id_foo-prefix-first_name">First name:</label>
<input type="text" name="foo-prefix-first_name" id="id_foo-prefix-first_name" required></li>
<li><label for="id_foo-prefix-last_name">Last name:</label>
<input type="text" name="foo-prefix-last_name" id="id_foo-prefix-last_name" required></li>
<li><label for="id_foo-prefix-birthday">Birthday:</label>
<input type="text" name="foo-prefix-birthday" id="id_foo-prefix-birthday" required></li>"""
)
data = {
'foo-prefix-first_name': 'John',
'foo-prefix-last_name': 'Lennon',
'foo-prefix-birthday': '1940-10-9'
}
p = Person(data, prefix='foo')
self.assertTrue(p.is_valid())
self.assertEqual(p.cleaned_data['first_name'], 'John')
self.assertEqual(p.cleaned_data['last_name'], 'Lennon')
self.assertEqual(p.cleaned_data['birthday'], datetime.date(1940, 10, 9))
def test_class_prefix(self):
# Prefix can be also specified at the class level.
class Person(Form):
first_name = CharField()
prefix = 'foo'
p = Person()
self.assertEqual(p.prefix, 'foo')
p = Person(prefix='bar')
self.assertEqual(p.prefix, 'bar')
def test_forms_with_null_boolean(self):
# NullBooleanField is a bit of a special case because its presentation (widget)
# is different than its data. This is handled transparently, though.
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
p = Person({'name': 'Joe'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '1'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '2'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': '3'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': True}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': False}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'unknown'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'true'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true" selected>Yes</option>
<option value="false">No</option>
</select>""")
p = Person({'name': 'Joe', 'is_cool': 'false'}, auto_id=False)
self.assertHTMLEqual(str(p['is_cool']), """<select name="is_cool">
<option value="unknown">Unknown</option>
<option value="true">Yes</option>
<option value="false" selected>No</option>
</select>""")
def test_forms_with_file_fields(self):
# FileFields are a special case because they take their data from the request.FILES,
# not request.POST.
class FileForm(Form):
file1 = FileField()
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
f = FileForm(data={}, files={}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>The submitted file is empty.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': 'something that is not a file'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<ul class="errorlist"><li>No file was submitted. Check the '
'encoding type on the form.</li></ul>'
'<input type="file" name="file1" required></td></tr>'
)
f = FileForm(data={}, files={'file1': SimpleUploadedFile('name', b'some content')}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
self.assertTrue(f.is_valid())
file1 = SimpleUploadedFile('我隻氣墊船裝滿晒鱔.txt', 'मेरी मँडराने वाली नाव सर्पमीनों से भरी ह'.encode())
f = FileForm(data={}, files={'file1': file1}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data should not contain the
# required HTML attribute. The file input is left blank by the user to
# keep the existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_filefield_initial_callable(self):
class FileForm(forms.Form):
file1 = forms.FileField(initial=lambda: 'resume.txt')
f = FileForm({})
self.assertEqual(f.errors, {})
self.assertEqual(f.cleaned_data['file1'], 'resume.txt')
def test_filefield_with_fileinput_required(self):
class FileForm(Form):
file1 = forms.FileField(widget=FileInput)
f = FileForm(auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td>'
'<input type="file" name="file1" required></td></tr>',
)
# A required file field with initial data doesn't contain the required
# HTML attribute. The file input is left blank by the user to keep the
# existing, initial value.
f = FileForm(initial={'file1': 'resume.txt'}, auto_id=False)
self.assertHTMLEqual(
f.as_table(),
'<tr><th>File1:</th><td><input type="file" name="file1"></td></tr>',
)
def test_empty_permitted(self):
# Sometimes (pretty much in formsets) we want to allow a form to pass validation
# if it is completely empty. We can accomplish this by using the empty_permitted
# argument to a form constructor.
class SongForm(Form):
artist = CharField()
name = CharField()
# First let's show what happens id empty_permitted=False (the default):
data = {'artist': '', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.'], 'artist': ['This field is required.']})
self.assertEqual(form.cleaned_data, {})
# Now let's show what happens when empty_permitted=True and the form is empty.
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
self.assertEqual(form.errors, {})
self.assertEqual(form.cleaned_data, {})
# But if we fill in data for one of the fields, the form is no longer empty and
# the whole thing must pass validation.
data = {'artist': 'The Doors', 'song': ''}
form = SongForm(data, empty_permitted=False)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['This field is required.']})
self.assertEqual(form.cleaned_data, {'artist': 'The Doors'})
# If a field is not given in the data then None is returned for its data. Lets
# make sure that when checking for empty_permitted that None is treated
# accordingly.
data = {'artist': None, 'song': ''}
form = SongForm(data, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
# However, we *really* need to be sure we are checking for None as any data in
# initial that returns False on a boolean call needs to be treated literally.
class PriceForm(Form):
amount = FloatField()
qty = IntegerField()
data = {'amount': '0.0', 'qty': ''}
form = PriceForm(data, initial={'amount': 0.0}, empty_permitted=True, use_required_attribute=False)
self.assertTrue(form.is_valid())
def test_empty_permitted_and_use_required_attribute(self):
msg = (
'The empty_permitted and use_required_attribute arguments may not '
'both be True.'
)
with self.assertRaisesMessage(ValueError, msg):
Person(empty_permitted=True, use_required_attribute=True)
def test_extracting_hidden_and_visible(self):
class SongForm(Form):
token = CharField(widget=HiddenInput)
artist = CharField()
name = CharField()
form = SongForm()
self.assertEqual([f.name for f in form.hidden_fields()], ['token'])
self.assertEqual([f.name for f in form.visible_fields()], ['artist', 'name'])
def test_hidden_initial_gets_id(self):
class MyForm(Form):
field1 = CharField(max_length=50, show_hidden_initial=True)
self.assertHTMLEqual(
MyForm().as_table(),
'<tr><th><label for="id_field1">Field1:</label></th>'
'<td><input id="id_field1" type="text" name="field1" maxlength="50" required>'
'<input type="hidden" name="initial-field1" id="initial-id_field1"></td></tr>'
)
def test_error_html_required_html_classes(self):
class Person(Form):
name = CharField()
is_cool = NullBooleanField()
email = EmailField(required=False)
age = IntegerField()
p = Person({})
p.error_css_class = 'error'
p.required_css_class = 'required'
self.assertHTMLEqual(
p.as_ul(),
"""<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
<li class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></li>
<li><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></li>
<li class="required error"><ul class="errorlist"><li>This field is required.</li></ul>
<label class="required" for="id_age">Age:</label> <input type="number" name="age" id="id_age" required></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_name">Name:</label>
<input type="text" name="name" id="id_name" required></p>
<p class="required"><label class="required" for="id_is_cool">Is cool:</label>
<select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></p>
<p><label for="id_email">Email:</label> <input type="email" name="email" id="id_email"></p>
<ul class="errorlist"><li>This field is required.</li></ul>
<p class="required error"><label class="required" for="id_age">Age:</label>
<input type="number" name="age" id="id_age" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr class="required error">
<th><label class="required" for="id_name">Name:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="text" name="name" id="id_name" required></td></tr>
<tr class="required"><th><label class="required" for="id_is_cool">Is cool:</label></th>
<td><select name="is_cool" id="id_is_cool">
<option value="unknown" selected>Unknown</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select></td></tr>
<tr><th><label for="id_email">Email:</label></th><td>
<input type="email" name="email" id="id_email"></td></tr>
<tr class="required error"><th><label class="required" for="id_age">Age:</label></th>
<td><ul class="errorlist"><li>This field is required.</li></ul>
<input type="number" name="age" id="id_age" required></td></tr>"""
)
def test_label_has_required_css_class(self):
"""
required_css_class is added to label_tag() and legend_tag() of required
fields.
"""
class SomeForm(Form):
required_css_class = 'required'
field = CharField(max_length=10)
field2 = IntegerField(required=False)
f = SomeForm({'field': 'test'})
self.assertHTMLEqual(f['field'].label_tag(), '<label for="id_field" class="required">Field:</label>')
self.assertHTMLEqual(
f['field'].legend_tag(),
'<legend for="id_field" class="required">Field:</legend>',
)
self.assertHTMLEqual(
f['field'].label_tag(attrs={'class': 'foo'}),
'<label for="id_field" class="foo required">Field:</label>'
)
self.assertHTMLEqual(
f['field'].legend_tag(attrs={'class': 'foo'}),
'<legend for="id_field" class="foo required">Field:</legend>'
)
self.assertHTMLEqual(f['field2'].label_tag(), '<label for="id_field2">Field2:</label>')
self.assertHTMLEqual(
f['field2'].legend_tag(),
'<legend for="id_field2">Field2:</legend>',
)
def test_label_split_datetime_not_displayed(self):
class EventForm(Form):
happened_at = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
form = EventForm()
self.assertHTMLEqual(
form.as_ul(),
'<input type="hidden" name="happened_at_0" id="id_happened_at_0">'
'<input type="hidden" name="happened_at_1" id="id_happened_at_1">'
)
def test_multivalue_field_validation(self):
def bad_names(value):
if value == 'bad value':
raise ValidationError('bad value not allowed')
class NameField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (CharField(label='First name', max_length=10),
CharField(label='Last name', max_length=10))
super().__init__(fields=fields, *args, **kwargs)
def compress(self, data_list):
return ' '.join(data_list)
class NameForm(Form):
name = NameField(validators=[bad_names])
form = NameForm(data={'name': ['bad', 'value']})
form.full_clean()
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'name': ['bad value not allowed']})
form = NameForm(data={'name': ['should be overly', 'long for the field names']})
self.assertFalse(form.is_valid())
self.assertEqual(
form.errors, {
'name': [
'Ensure this value has at most 10 characters (it has 16).',
'Ensure this value has at most 10 characters (it has 24).',
],
}
)
form = NameForm(data={'name': ['fname', 'lname']})
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {'name': 'fname lname'})
def test_multivalue_deep_copy(self):
"""
#19298 -- MultiValueField needs to override the default as it needs
to deep-copy subfields:
"""
class ChoicesField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (
ChoiceField(label='Rank', choices=((1, 1), (2, 2))),
CharField(label='Name', max_length=10),
)
super().__init__(fields=fields, *args, **kwargs)
field = ChoicesField()
field2 = copy.deepcopy(field)
self.assertIsInstance(field2, ChoicesField)
self.assertIsNot(field2.fields, field.fields)
self.assertIsNot(field2.fields[0].choices, field.fields[0].choices)
def test_multivalue_initial_data(self):
"""
#23674 -- invalid initial data should not break form.changed_data()
"""
class DateAgeField(MultiValueField):
def __init__(self, fields=(), *args, **kwargs):
fields = (DateField(label="Date"), IntegerField(label="Age"))
super().__init__(fields=fields, *args, **kwargs)
class DateAgeForm(Form):
date_age = DateAgeField()
data = {"date_age": ["1998-12-06", 16]}
form = DateAgeForm(data, initial={"date_age": ["200-10-10", 14]})
self.assertTrue(form.has_changed())
def test_multivalue_optional_subfields(self):
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = (
CharField(label='Country Code', validators=[
RegexValidator(r'^\+[0-9]{1,2}$', message='Enter a valid country code.')]),
CharField(label='Phone Number'),
CharField(label='Extension', error_messages={'incomplete': 'Enter an extension.'}),
CharField(label='Label', required=False, help_text='E.g. home, work.'),
)
super().__init__(fields, *args, **kwargs)
def compress(self, data_list):
if data_list:
return '%s.%s ext. %s (label: %s)' % tuple(data_list)
return None
# An empty value for any field will raise a `required` error on a
# required `MultiValueField`.
f = PhoneField()
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61'])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(['+61', '287654321', '123'])
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# Empty values for fields will NOT raise a `required` error on an
# optional `MultiValueField`
f = PhoneField(required=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
self.assertEqual('+61. ext. (label: )', f.clean(['+61']))
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
self.assertEqual('+61.287654321 ext. 123 (label: Home)', f.clean(['+61', '287654321', '123', 'Home']))
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For a required `MultiValueField` with `require_all_fields=False`, a
# `required` error will only be raised if all fields are empty. Fields
# can individually be required or optional. An empty value for any
# required field will raise an `incomplete` error.
f = PhoneField(require_all_fields=False)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean([])
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
# For an optional `MultiValueField` with `require_all_fields=False`, we
# don't get any `required` error but we still get `incomplete` errors.
f = PhoneField(required=False, require_all_fields=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertIsNone(f.clean([]))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
f.clean(['+61'])
self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
f.clean(['', '', '', 'Home'])
with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
f.clean(['61', '287654321', '123', 'Home'])
def test_multivalue_optional_subfields_rendering(self):
class PhoneWidget(MultiWidget):
def __init__(self, attrs=None):
widgets = [TextInput(), TextInput()]
super().__init__(widgets, attrs)
def decompress(self, value):
return [None, None]
class PhoneField(MultiValueField):
def __init__(self, *args, **kwargs):
fields = [CharField(), CharField(required=False)]
super().__init__(fields, *args, **kwargs)
class PhoneForm(Form):
phone1 = PhoneField(widget=PhoneWidget)
phone2 = PhoneField(widget=PhoneWidget, required=False)
phone3 = PhoneField(widget=PhoneWidget, require_all_fields=False)
phone4 = PhoneField(
widget=PhoneWidget, required=False, require_all_fields=False,
)
form = PhoneForm(auto_id=False)
self.assertHTMLEqual(
form.as_p(),
"""
<p>Phone1:<input type="text" name="phone1_0" required><input type="text" name="phone1_1" required></p>
<p>Phone2:<input type="text" name="phone2_0"><input type="text" name="phone2_1"></p>
<p>Phone3:<input type="text" name="phone3_0" required><input type="text" name="phone3_1"></p>
<p>Phone4:<input type="text" name="phone4_0"><input type="text" name="phone4_1"></p>
""",
)
def test_custom_empty_values(self):
"""
Form fields can customize what is considered as an empty value
for themselves (#19997).
"""
class CustomJSONField(CharField):
empty_values = [None, '']
def to_python(self, value):
# Fake json.loads
if value == '{}':
return {}
return super().to_python(value)
class JSONForm(forms.Form):
json = CustomJSONField()
form = JSONForm(data={'json': '{}'})
form.full_clean()
self.assertEqual(form.cleaned_data, {'json': {}})
def test_boundfield_label_tag(self):
class SomeForm(Form):
field = CharField()
boundfield = SomeForm()['field']
testcases = [ # (args, kwargs, expected)
# without anything: just print the <label>
((), {}, '<%(tag)s for="id_field">Field:</%(tag)s>'),
# passing just one argument: overrides the field's label
(('custom',), {}, '<%(tag)s for="id_field">custom:</%(tag)s>'),
# the overridden label is escaped
(('custom&',), {}, '<%(tag)s for="id_field">custom&:</%(tag)s>'),
((mark_safe('custom&'),), {}, '<%(tag)s for="id_field">custom&:</%(tag)s>'),
# Passing attrs to add extra attributes on the <label>
(
(),
{'attrs': {'class': 'pretty'}},
'<%(tag)s for="id_field" class="pretty">Field:</%(tag)s>',
),
]
for args, kwargs, expected in testcases:
with self.subTest(args=args, kwargs=kwargs):
self.assertHTMLEqual(
boundfield.label_tag(*args, **kwargs),
expected % {'tag': 'label'},
)
self.assertHTMLEqual(
boundfield.legend_tag(*args, **kwargs),
expected % {'tag': 'legend'},
)
def test_boundfield_label_tag_no_id(self):
"""
If a widget has no id, label_tag() and legend_tag() return the text
with no surrounding <label>.
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(auto_id='')['field']
self.assertHTMLEqual(boundfield.label_tag(), 'Field:')
self.assertHTMLEqual(boundfield.legend_tag(), 'Field:')
self.assertHTMLEqual(boundfield.label_tag('Custom&'), 'Custom&:')
self.assertHTMLEqual(boundfield.legend_tag('Custom&'), 'Custom&:')
def test_boundfield_label_tag_custom_widget_id_for_label(self):
class CustomIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return 'custom_' + id
class EmptyIdForLabelTextInput(TextInput):
def id_for_label(self, id):
return None
class SomeForm(Form):
custom = CharField(widget=CustomIdForLabelTextInput)
empty = CharField(widget=EmptyIdForLabelTextInput)
form = SomeForm()
self.assertHTMLEqual(form['custom'].label_tag(), '<label for="custom_id_custom">Custom:</label>')
self.assertHTMLEqual(
form['custom'].legend_tag(),
'<legend for="custom_id_custom">Custom:</legend>',
)
self.assertHTMLEqual(form['empty'].label_tag(), '<label>Empty:</label>')
self.assertHTMLEqual(form['empty'].legend_tag(), '<legend>Empty:</legend>')
def test_boundfield_empty_label(self):
class SomeForm(Form):
field = CharField(label='')
boundfield = SomeForm()['field']
self.assertHTMLEqual(boundfield.label_tag(), '<label for="id_field"></label>')
self.assertHTMLEqual(
boundfield.legend_tag(),
'<legend for="id_field"></legend>',
)
def test_boundfield_id_for_label(self):
class SomeForm(Form):
field = CharField(label='')
self.assertEqual(SomeForm()['field'].id_for_label, 'id_field')
def test_boundfield_id_for_label_override_by_attrs(self):
"""
If an id is provided in `Widget.attrs`, it overrides the generated ID,
unless it is `None`.
"""
class SomeForm(Form):
field = CharField(widget=TextInput(attrs={'id': 'myCustomID'}))
field_none = CharField(widget=TextInput(attrs={'id': None}))
form = SomeForm()
self.assertEqual(form['field'].id_for_label, 'myCustomID')
self.assertEqual(form['field_none'].id_for_label, 'id_field_none')
def test_boundfield_subwidget_id_for_label(self):
"""
If auto_id is provided when initializing the form, the generated ID in
subwidgets must reflect that prefix.
"""
class SomeForm(Form):
field = MultipleChoiceField(
choices=[('a', 'A'), ('b', 'B')],
widget=CheckboxSelectMultiple,
)
form = SomeForm(auto_id='prefix_%s')
subwidgets = form['field'].subwidgets
self.assertEqual(subwidgets[0].id_for_label, 'prefix_field_0')
self.assertEqual(subwidgets[1].id_for_label, 'prefix_field_1')
def test_boundfield_widget_type(self):
class SomeForm(Form):
first_name = CharField()
birthday = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
f = SomeForm()
self.assertEqual(f['first_name'].widget_type, 'text')
self.assertEqual(f['birthday'].widget_type, 'splithiddendatetime')
def test_boundfield_css_classes(self):
form = Person()
field = form['first_name']
self.assertEqual(field.css_classes(), '')
self.assertEqual(field.css_classes(extra_classes=''), '')
self.assertEqual(field.css_classes(extra_classes='test'), 'test')
self.assertEqual(field.css_classes(extra_classes='test test'), 'test')
def test_label_suffix_override(self):
"""
BoundField label_suffix (if provided) overrides Form label_suffix
"""
class SomeForm(Form):
field = CharField()
boundfield = SomeForm(label_suffix='!')['field']
self.assertHTMLEqual(boundfield.label_tag(label_suffix='$'), '<label for="id_field">Field$</label>')
self.assertHTMLEqual(
boundfield.legend_tag(label_suffix='$'),
'<legend for="id_field">Field$</legend>',
)
def test_error_dict(self):
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError('Non-field error.', code='secret', params={'a': 1, 'b': 2})
form = MyForm({})
self.assertIs(form.is_valid(), False)
errors = form.errors.as_text()
control = [
'* foo\n * This field is required.',
'* bar\n * This field is required.',
'* __all__\n * Non-field error.',
]
for error in control:
self.assertIn(error, errors)
errors = form.errors.as_ul()
control = [
'<li>foo<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>bar<ul class="errorlist"><li>This field is required.</li></ul></li>',
'<li>__all__<ul class="errorlist nonfield"><li>Non-field error.</li></ul></li>',
]
for error in control:
self.assertInHTML(error, errors)
errors = form.errors.get_json_data()
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': 'Non-field error.'}]
}
self.assertEqual(errors, control)
self.assertEqual(json.dumps(errors), form.errors.as_json())
def test_error_dict_as_json_escape_html(self):
"""#21962 - adding html escape flag to ErrorDict"""
class MyForm(Form):
foo = CharField()
bar = CharField()
def clean(self):
raise ValidationError(
'<p>Non-field error.</p>',
code='secret',
params={'a': 1, 'b': 2},
)
control = {
'foo': [{'code': 'required', 'message': 'This field is required.'}],
'bar': [{'code': 'required', 'message': 'This field is required.'}],
'__all__': [{'code': 'secret', 'message': '<p>Non-field error.</p>'}]
}
form = MyForm({})
self.assertFalse(form.is_valid())
errors = json.loads(form.errors.as_json())
self.assertEqual(errors, control)
escaped_error = '<p>Non-field error.</p>'
self.assertEqual(
form.errors.get_json_data(escape_html=True)['__all__'][0]['message'],
escaped_error
)
errors = json.loads(form.errors.as_json(escape_html=True))
control['__all__'][0]['message'] = escaped_error
self.assertEqual(errors, control)
def test_error_list(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertIsInstance(e, list)
self.assertIn('Foo', e)
self.assertIn('Foo', ValidationError(e))
self.assertEqual(
e.as_text(),
'* Foo\n* Foobar'
)
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
errors = e.get_json_data()
self.assertEqual(
errors,
[{"message": "Foo", "code": ""}, {"message": "Foobar", "code": "foobar"}]
)
self.assertEqual(json.dumps(errors), e.as_json())
def test_error_list_class_not_specified(self):
e = ErrorList()
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_class_has_one_class_specified(self):
e = ErrorList(error_class='foobar-error-class')
e.append('Foo')
e.append(ValidationError('Foo%(bar)s', code='foobar', params={'bar': 'bar'}))
self.assertEqual(
e.as_ul(),
'<ul class="errorlist foobar-error-class"><li>Foo</li><li>Foobar</li></ul>'
)
def test_error_list_with_hidden_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField(widget=HiddenInput)
p = Person({'first_name': 'John'})
self.assertHTMLEqual(
p.as_ul(),
"""<li><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></li><li>
<label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></li>"""
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>(Hidden field last_name) This field is required.</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield">
<li>(Hidden field last_name) This field is required.</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required>
<input id="id_last_name" name="last_name" type="hidden"></td></tr>"""
)
def test_error_list_with_non_field_errors_has_correct_class(self):
class Person(Form):
first_name = CharField()
last_name = CharField()
def clean(self):
raise ValidationError('Generic validation error')
p = Person({'first_name': 'John', 'last_name': 'Lennon'})
self.assertHTMLEqual(
str(p.non_field_errors()),
'<ul class="errorlist nonfield"><li>Generic validation error</li></ul>'
)
self.assertHTMLEqual(
p.as_ul(),
"""<li>
<ul class="errorlist nonfield"><li>Generic validation error</li></ul></li>
<li><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></li>
<li><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></li>"""
)
self.assertHTMLEqual(
p.non_field_errors().as_text(),
'* Generic validation error'
)
self.assertHTMLEqual(
p.as_p(),
"""<ul class="errorlist nonfield"><li>Generic validation error</li></ul>
<p><label for="id_first_name">First name:</label>
<input id="id_first_name" name="first_name" type="text" value="John" required></p>
<p><label for="id_last_name">Last name:</label>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></p>"""
)
self.assertHTMLEqual(
p.as_table(),
"""<tr><td colspan="2"><ul class="errorlist nonfield"><li>Generic validation error</li></ul></td></tr>
<tr><th><label for="id_first_name">First name:</label></th><td>
<input id="id_first_name" name="first_name" type="text" value="John" required></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th><td>
<input id="id_last_name" name="last_name" type="text" value="Lennon" required></td></tr>"""
)
def test_error_escaping(self):
class TestForm(Form):
hidden = CharField(widget=HiddenInput(), required=False)
visible = CharField()
def clean_hidden(self):
raise ValidationError('Foo & "bar"!')
clean_visible = clean_hidden
form = TestForm({'hidden': 'a', 'visible': 'b'})
form.is_valid()
self.assertHTMLEqual(
form.as_ul(),
'<li><ul class="errorlist nonfield"><li>(Hidden field hidden) Foo & "bar"!</li></ul></li>'
'<li><ul class="errorlist"><li>Foo & "bar"!</li></ul>'
'<label for="id_visible">Visible:</label> '
'<input type="text" name="visible" value="b" id="id_visible" required>'
'<input type="hidden" name="hidden" value="a" id="id_hidden"></li>'
)
def test_baseform_repr(self):
"""
BaseForm.__repr__() should contain some basic information about the
form.
"""
p = Person()
self.assertEqual(repr(p), "<Person bound=False, valid=Unknown, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': '1940-10-9'})
self.assertEqual(repr(p), "<Person bound=True, valid=Unknown, fields=(first_name;last_name;birthday)>")
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=True, fields=(first_name;last_name;birthday)>")
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
p.is_valid()
self.assertEqual(repr(p), "<Person bound=True, valid=False, fields=(first_name;last_name;birthday)>")
def test_baseform_repr_dont_trigger_validation(self):
"""
BaseForm.__repr__() shouldn't trigger the form validation.
"""
p = Person({'first_name': 'John', 'last_name': 'Lennon', 'birthday': 'fakedate'})
repr(p)
with self.assertRaises(AttributeError):
p.cleaned_data
self.assertFalse(p.is_valid())
self.assertEqual(p.cleaned_data, {'first_name': 'John', 'last_name': 'Lennon'})
def test_accessing_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
if not self.errors:
data['username'] = data['username'].lower()
return data
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_nothing_returned(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
self.cleaned_data['username'] = self.cleaned_data['username'].lower()
# don't return anything
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_changing_cleaned_data_in_clean(self):
class UserForm(Form):
username = CharField(max_length=10)
password = CharField(widget=PasswordInput)
def clean(self):
data = self.cleaned_data
# Return a different dict. We have not changed self.cleaned_data.
return {
'username': data['username'].lower(),
'password': 'this_is_not_a_secret',
}
f = UserForm({'username': 'SirRobin', 'password': 'blue'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['username'], 'sirrobin')
def test_multipart_encoded_form(self):
class FormWithoutFile(Form):
username = CharField()
class FormWithFile(Form):
username = CharField()
file = FileField()
class FormWithImage(Form):
image = ImageField()
self.assertFalse(FormWithoutFile().is_multipart())
self.assertTrue(FormWithFile().is_multipart())
self.assertTrue(FormWithImage().is_multipart())
def test_html_safe(self):
class SimpleForm(Form):
username = CharField()
form = SimpleForm()
self.assertTrue(hasattr(SimpleForm, '__html__'))
self.assertEqual(str(form), form.__html__())
self.assertTrue(hasattr(form['username'], '__html__'))
self.assertEqual(str(form['username']), form['username'].__html__())
def test_use_required_attribute_true(self):
class MyForm(Form):
use_required_attribute = True
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text" required></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> '
'<input id="id_f1" maxlength="30" name="f1" type="text" required></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text" required></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th>'
'<td><textarea cols="40" id="id_f3" name="f3" rows="10" required>'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_use_required_attribute_false(self):
class MyForm(Form):
use_required_attribute = False
f1 = CharField(max_length=30)
f2 = CharField(max_length=30, required=False)
f3 = CharField(widget=Textarea)
f4 = ChoiceField(choices=[('P', 'Python'), ('J', 'Java')])
form = MyForm()
self.assertHTMLEqual(
form.as_p(),
'<p><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></p>'
'<p><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></p>'
'<p><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></p>'
'<p><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></p>',
)
self.assertHTMLEqual(
form.as_ul(),
'<li><label for="id_f1">F1:</label> <input id="id_f1" maxlength="30" name="f1" type="text"></li>'
'<li><label for="id_f2">F2:</label> <input id="id_f2" maxlength="30" name="f2" type="text"></li>'
'<li><label for="id_f3">F3:</label> <textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></li>'
'<li><label for="id_f4">F4:</label> <select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></li>',
)
self.assertHTMLEqual(
form.as_table(),
'<tr><th><label for="id_f1">F1:</label></th>'
'<td><input id="id_f1" maxlength="30" name="f1" type="text"></td></tr>'
'<tr><th><label for="id_f2">F2:</label></th>'
'<td><input id="id_f2" maxlength="30" name="f2" type="text"></td></tr>'
'<tr><th><label for="id_f3">F3:</label></th><td><textarea cols="40" id="id_f3" name="f3" rows="10">'
'</textarea></td></tr>'
'<tr><th><label for="id_f4">F4:</label></th><td><select id="id_f4" name="f4">'
'<option value="P">Python</option>'
'<option value="J">Java</option>'
'</select></td></tr>',
)
def test_only_hidden_fields(self):
# A form with *only* hidden fields that has errors is going to be very unusual.
class HiddenForm(Form):
data = IntegerField(widget=HiddenInput)
f = HiddenForm({})
self.assertHTMLEqual(
f.as_p(),
'<ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>\n<p> '
'<input type="hidden" name="data" id="id_data"></p>'
)
self.assertHTMLEqual(
f.as_table(),
'<tr><td colspan="2"><ul class="errorlist nonfield">'
'<li>(Hidden field data) This field is required.</li></ul>'
'<input type="hidden" name="data" id="id_data"></td></tr>'
)
def test_field_named_data(self):
class DataForm(Form):
data = CharField(max_length=10)
f = DataForm({'data': 'xyzzy'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data, {'data': 'xyzzy'})
def test_empty_data_files_multi_value_dict(self):
p = Person()
self.assertIsInstance(p.data, MultiValueDict)
self.assertIsInstance(p.files, MultiValueDict)
def test_field_deep_copy_error_messages(self):
class CustomCharField(CharField):
def __init__(self, **kwargs):
kwargs['error_messages'] = {'invalid': 'Form custom error message.'}
super().__init__(**kwargs)
field = CustomCharField()
field_copy = copy.deepcopy(field)
self.assertIsInstance(field_copy, CustomCharField)
self.assertIsNot(field_copy.error_messages, field.error_messages)
def test_label_does_not_include_new_line(self):
form = Person()
field = form['first_name']
self.assertEqual(field.label_tag(), '<label for="id_first_name">First name:</label>')
self.assertEqual(
field.legend_tag(),
'<legend for="id_first_name">First name:</legend>',
)
@override_settings(USE_THOUSAND_SEPARATOR=True)
def test_label_attrs_not_localized(self):
form = Person()
field = form['first_name']
self.assertHTMLEqual(
field.label_tag(attrs={'number': 9999}),
'<label number="9999" for="id_first_name">First name:</label>',
)
self.assertHTMLEqual(
field.legend_tag(attrs={'number': 9999}),
'<legend number="9999" for="id_first_name">First name:</legend>',
)
@jinja2_tests
class Jinja2FormsTestCase(FormsTestCase):
pass
class CustomRenderer(DjangoTemplates):
pass
class RendererTests(SimpleTestCase):
def test_default(self):
form = Form()
self.assertEqual(form.renderer, get_default_renderer())
def test_kwarg_instance(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_kwarg_class(self):
custom = CustomRenderer()
form = Form(renderer=custom)
self.assertEqual(form.renderer, custom)
def test_attribute_instance(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
form = CustomForm()
self.assertEqual(form.renderer, CustomForm.default_renderer)
def test_attribute_class(self):
class CustomForm(Form):
default_renderer = CustomRenderer
form = CustomForm()
self.assertIsInstance(form.renderer, CustomForm.default_renderer)
def test_attribute_override(self):
class CustomForm(Form):
default_renderer = DjangoTemplates()
custom = CustomRenderer()
form = CustomForm(renderer=custom)
self.assertEqual(form.renderer, custom)
class TemplateTests(SimpleTestCase):
def test_iterate_radios(self):
f = FrameworkForm(auto_id='id_%s')
t = Template(
'{% for radio in form.language %}'
'<div class="myradio">{{ radio }}</div>'
'{% endfor %}'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<div class="myradio"><label for="id_language_0">'
'<input id="id_language_0" name="language" type="radio" value="P" '
'required> Python</label></div>'
'<div class="myradio"><label for="id_language_1">'
'<input id="id_language_1" name="language" type="radio" value="J" '
'required> Java</label></div>',
)
def test_iterate_checkboxes(self):
f = SongForm({'composers': ['J', 'P']}, auto_id=False)
t = Template(
'{% for checkbox in form.composers %}'
'<div class="mycheckbox">{{ checkbox }}</div>'
'{% endfor %}'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="J"> '
'John Lennon</label></div>'
'<div class="mycheckbox"><label>'
'<input checked name="composers" type="checkbox" value="P"> '
'Paul McCartney</label></div>',
)
def test_templates_with_forms(self):
class UserRegistration(Form):
username = CharField(max_length=10, help_text=(
"Good luck picking a username that doesn't already exist."
))
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get('password1') and
self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']
):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
# There is full flexibility in displaying form fields in a template.
# Just pass a Form instance to the template, and use "dot" access to
# refer to individual fields. However, this flexibility comes with the
# responsibility of displaying all the errors, including any that might
# not be associated with a particular field.
t = Template(
'<form>'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" maxlength="10" required></label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
f = UserRegistration({'username': 'django'}, auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<ul class="errorlist"><li>This field is required.</li></ul><p>'
'<label>Password: '
'<input type="password" name="password1" required></label></p>'
'<ul class="errorlist"><li>This field is required.</li></ul>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].label to output a field's label. 'label' for a field
# can by specified by using the 'label' argument to a Field class. If
# 'label' is not specified, Django will use the field name with
# underscores converted to spaces, and the initial letter capitalized.
t = Template(
'<form>'
'<p><label>{{ form.username.label }}: {{ form.username }}</label></p>'
'<p><label>{{ form.password1.label }}: {{ form.password1 }}</label></p>'
'<p><label>{{ form.password2.label }}: {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Username: '
'<input type="text" name="username" maxlength="10" required></label></p>'
'<p><label>Password1: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password2: '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].label_tag to output a field's label with a <label>
# tag wrapped around it, but *only* if the given field has an "id"
# attribute. Recall from above that passing the "auto_id" argument to a
# Form gives each field an "id" attribute.
t = Template(
'<form>'
'<p>{{ form.username.label_tag }} {{ form.username }}</p>'
'<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>'
'<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>'
'<input type="submit" required>'
'</form>'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p>Username: '
'<input type="text" name="username" maxlength="10" required></p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
'</form>',
)
f = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label for="id_username">Username:</label>'
'<input id="id_username" type="text" name="username" maxlength="10" '
'required></p>'
'<p><label for="id_password1">Password1:</label>'
'<input type="password" name="password1" id="id_password1" required></p>'
'<p><label for="id_password2">Password2:</label>'
'<input type="password" name="password2" id="id_password2" required></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].legend_tag to output a field's label with a <legend>
# tag wrapped around it, but *only* if the given field has an "id"
# attribute. Recall from above that passing the "auto_id" argument to a
# Form gives each field an "id" attribute.
t = Template(
'<form>'
'<p>{{ form.username.legend_tag }} {{ form.username }}</p>'
'<p>{{ form.password1.legend_tag }} {{ form.password1 }}</p>'
'<p>{{ form.password2.legend_tag }} {{ form.password2 }}</p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p>Username: '
'<input type="text" name="username" maxlength="10" required></p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
'</form>',
)
f = UserRegistration(auto_id='id_%s')
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><legend for="id_username">Username:</legend>'
'<input id="id_username" type="text" name="username" maxlength="10" '
'required></p>'
'<p><legend for="id_password1">Password1:</legend>'
'<input type="password" name="password1" id="id_password1" required></p>'
'<p><legend for="id_password2">Password2:</legend>'
'<input type="password" name="password2" id="id_password2" required></p>'
'<input type="submit" required>'
'</form>',
)
# Use form.[field].help_text to output a field's help text. If the
# given field does not have help text, nothing will be output.
t = Template(
'<form>'
'<p>{{ form.username.label_tag }} {{ form.username }}<br>'
'{{ form.username.help_text }}</p>'
'<p>{{ form.password1.label_tag }} {{ form.password1 }}</p>'
'<p>{{ form.password2.label_tag }} {{ form.password2 }}</p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(auto_id=False)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p>Username: '
'<input type="text" name="username" maxlength="10" required><br>'
'Good luck picking a username that doesn't already exist.</p>'
'<p>Password1: <input type="password" name="password1" required></p>'
'<p>Password2: <input type="password" name="password2" required></p>'
'<input type="submit" required>'
'</form>',
)
self.assertEqual(
Template('{{ form.password1.help_text }}').render(Context({'form': f})),
'',
)
# To display the errors that aren't associated with a particular field
# e.g. the errors caused by Form.clean() -- use
# {{ form.non_field_errors }} in the template. If used on its own, it
# is displayed as a <ul> (or an empty string, if the list of errors is
# empty).
t = Template(
'<form>'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
f = UserRegistration(
{'username': 'django', 'password1': 'foo', 'password2': 'bar'},
auto_id=False,
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
t = Template(
'<form>'
'{{ form.non_field_errors }}'
'{{ form.username.errors.as_ul }}'
'<p><label>Your username: {{ form.username }}</label></p>'
'{{ form.password1.errors.as_ul }}'
'<p><label>Password: {{ form.password1 }}</label></p>'
'{{ form.password2.errors.as_ul }}'
'<p><label>Password (again): {{ form.password2 }}</label></p>'
'<input type="submit" required>'
'</form>'
)
self.assertHTMLEqual(
t.render(Context({'form': f})),
'<form>'
'<ul class="errorlist nonfield">'
'<li>Please make sure your passwords match.</li></ul>'
'<p><label>Your username: '
'<input type="text" name="username" value="django" maxlength="10" required>'
'</label></p>'
'<p><label>Password: '
'<input type="password" name="password1" required></label></p>'
'<p><label>Password (again): '
'<input type="password" name="password2" required></label></p>'
'<input type="submit" required>'
'</form>',
)
def test_basic_processing_in_view(self):
class UserRegistration(Form):
username = CharField(max_length=10)
password1 = CharField(widget=PasswordInput)
password2 = CharField(widget=PasswordInput)
def clean(self):
if (
self.cleaned_data.get('password1') and
self.cleaned_data.get('password2') and
self.cleaned_data['password1'] != self.cleaned_data['password2']
):
raise ValidationError('Please make sure your passwords match.')
return self.cleaned_data
def my_function(method, post_data):
if method == 'POST':
form = UserRegistration(post_data, auto_id=False)
else:
form = UserRegistration(auto_id=False)
if form.is_valid():
return 'VALID: %r' % sorted(form.cleaned_data.items())
t = Template(
'<form method="post">'
'<table>'
'{{ form }}'
'</table>'
'<input type="submit" required>'
'</form>'
)
return t.render(Context({'form': form}))
# GET with an empty form and no errors.
self.assertHTMLEqual(
my_function('GET', {}),
'<form method="post">'
'<table>'
'<tr><th>Username:</th><td>'
'<input type="text" name="username" maxlength="10" required></td></tr>'
'<tr><th>Password1:</th><td>'
'<input type="password" name="password1" required></td></tr>'
'<tr><th>Password2:</th><td>'
'<input type="password" name="password2" required></td></tr>'
'</table>'
'<input type="submit" required>'
'</form>',
)
# POST with erroneous data, a redisplayed form, with errors.
self.assertHTMLEqual(
my_function('POST', {
'username': 'this-is-a-long-username',
'password1': 'foo',
'password2': 'bar',
}),
'<form method="post">'
'<table>'
'<tr><td colspan="2"><ul class="errorlist nonfield">'
'<li>Please make sure your passwords match.</li></ul></td></tr>'
'<tr><th>Username:</th><td><ul class="errorlist">'
'<li>Ensure this value has at most 10 characters (it has 23).</li></ul>'
'<input type="text" name="username" '
'value="this-is-a-long-username" maxlength="10" required></td></tr>'
'<tr><th>Password1:</th><td>'
'<input type="password" name="password1" required></td></tr>'
'<tr><th>Password2:</th><td>'
'<input type="password" name="password2" required></td></tr>'
'</table>'
'<input type="submit" required>'
'</form>',
)
# POST with valid data (the success message).
self.assertEqual(
my_function('POST', {
'username': 'adrian',
'password1': 'secret',
'password2': 'secret',
}),
"VALID: [('password1', 'secret'), ('password2', 'secret'), "
"('username', 'adrian')]",
)
class OverrideTests(SimpleTestCase):
def test_use_custom_template(self):
class Person(Form):
first_name = CharField()
template_name = 'forms_tests/form_snippet.html'
t = Template('{{ form }}')
html = t.render(Context({'form': Person()}))
expected = """
<div class="fieldWrapper"><label for="id_first_name">First name:</label>
<input type="text" name="first_name" required id="id_first_name"></div>
"""
self.assertHTMLEqual(html, expected)
def test_errorlist_override(self):
class CustomErrorList(ErrorList):
template_name = 'forms_tests/error.html'
class CommentForm(Form):
name = CharField(max_length=50, required=False)
email = EmailField()
comment = CharField()
data = {'email': 'invalid'}
f = CommentForm(data, auto_id=False, error_class=CustomErrorList)
self.assertHTMLEqual(
f.as_p(),
'<p>Name: <input type="text" name="name" maxlength="50"></p>'
'<div class="errorlist">'
'<div class="error">Enter a valid email address.</div></div>'
'<p>Email: <input type="email" name="email" value="invalid" required></p>'
'<div class="errorlist">'
'<div class="error">This field is required.</div></div>'
'<p>Comment: <input type="text" name="comment" required></p>',
)
def test_cyclic_context_boundfield_render(self):
class FirstNameForm(Form):
first_name = CharField()
template_name_label = 'forms_tests/cyclic_context_boundfield_render.html'
f = FirstNameForm()
try:
self.assertInHTML('<th>1</th>', f.render())
except RecursionError:
self.fail('Cyclic reference in BoundField.render().')
def test_legend_tag(self):
class CustomFrameworkForm(FrameworkForm):
template_name = 'forms_tests/legend_test.html'
required_css_class = 'required'
f = CustomFrameworkForm()
self.assertHTMLEqual(
str(f),
'<label for="id_name" class="required">Name:</label>'
'<legend class="required">Language:</legend>',
)
|
3ba6f7a4dd23e27b91b19fde3bb303f86dd2927609ebb52d32ac1c6ab709498f | """HTML utilities suitable for global use."""
import html
import json
import re
from html.parser import HTMLParser
from urllib.parse import (
parse_qsl, quote, unquote, urlencode, urlsplit, urlunsplit,
)
from django.utils.encoding import punycode
from django.utils.functional import Promise, keep_lazy, keep_lazy_text
from django.utils.http import RFC3986_GENDELIMS, RFC3986_SUBDELIMS
from django.utils.regex_helper import _lazy_re_compile
from django.utils.safestring import SafeData, SafeString, mark_safe
from django.utils.text import normalize_newlines
@keep_lazy(str, SafeString)
def escape(text):
"""
Return the given text with ampersands, quotes and angle brackets encoded
for use in HTML.
Always escape input, even if it's already escaped and marked as such.
This may result in double-escaping. If this is a concern, use
conditional_escape() instead.
"""
return mark_safe(html.escape(str(text)))
_js_escapes = {
ord('\\'): '\\u005C',
ord('\''): '\\u0027',
ord('"'): '\\u0022',
ord('>'): '\\u003E',
ord('<'): '\\u003C',
ord('&'): '\\u0026',
ord('='): '\\u003D',
ord('-'): '\\u002D',
ord(';'): '\\u003B',
ord('`'): '\\u0060',
ord('\u2028'): '\\u2028',
ord('\u2029'): '\\u2029'
}
# Escape every ASCII character with a value less than 32.
_js_escapes.update((ord('%c' % z), '\\u%04X' % z) for z in range(32))
@keep_lazy(str, SafeString)
def escapejs(value):
"""Hex encode characters for use in JavaScript strings."""
return mark_safe(str(value).translate(_js_escapes))
_json_script_escapes = {
ord('>'): '\\u003E',
ord('<'): '\\u003C',
ord('&'): '\\u0026',
}
def json_script(value, element_id):
"""
Escape all the HTML/XML special characters with their unicode escapes, so
value is safe to be output anywhere except for inside a tag attribute. Wrap
the escaped JSON in a script tag.
"""
from django.core.serializers.json import DjangoJSONEncoder
json_str = json.dumps(value, cls=DjangoJSONEncoder).translate(_json_script_escapes)
return format_html(
'<script id="{}" type="application/json">{}</script>',
element_id, mark_safe(json_str)
)
def conditional_escape(text):
"""
Similar to escape(), except that it doesn't operate on pre-escaped strings.
This function relies on the __html__ convention used both by Django's
SafeData class and by third-party libraries like markupsafe.
"""
if isinstance(text, Promise):
text = str(text)
if hasattr(text, '__html__'):
return text.__html__()
else:
return escape(text)
def format_html(format_string, *args, **kwargs):
"""
Similar to str.format, but pass all arguments through conditional_escape(),
and call mark_safe() on the result. This function should be used instead
of str.format or % interpolation to build up small HTML fragments.
"""
args_safe = map(conditional_escape, args)
kwargs_safe = {k: conditional_escape(v) for (k, v) in kwargs.items()}
return mark_safe(format_string.format(*args_safe, **kwargs_safe))
def format_html_join(sep, format_string, args_generator):
"""
A wrapper of format_html, for the common case of a group of arguments that
need to be formatted using the same format string, and then joined using
'sep'. 'sep' is also passed through conditional_escape.
'args_generator' should be an iterator that returns the sequence of 'args'
that will be passed to format_html.
Example:
format_html_join('\n', "<li>{} {}</li>", ((u.first_name, u.last_name)
for u in users))
"""
return mark_safe(conditional_escape(sep).join(
format_html(format_string, *args)
for args in args_generator
))
@keep_lazy_text
def linebreaks(value, autoescape=False):
"""Convert newlines into <p> and <br>s."""
value = normalize_newlines(value)
paras = re.split('\n{2,}', str(value))
if autoescape:
paras = ['<p>%s</p>' % escape(p).replace('\n', '<br>') for p in paras]
else:
paras = ['<p>%s</p>' % p.replace('\n', '<br>') for p in paras]
return '\n\n'.join(paras)
class MLStripper(HTMLParser):
def __init__(self):
super().__init__(convert_charrefs=False)
self.reset()
self.fed = []
def handle_data(self, d):
self.fed.append(d)
def handle_entityref(self, name):
self.fed.append('&%s;' % name)
def handle_charref(self, name):
self.fed.append('&#%s;' % name)
def get_data(self):
return ''.join(self.fed)
def _strip_once(value):
"""
Internal tag stripping utility used by strip_tags.
"""
s = MLStripper()
s.feed(value)
s.close()
return s.get_data()
@keep_lazy_text
def strip_tags(value):
"""Return the given HTML with all tags stripped."""
# Note: in typical case this loop executes _strip_once once. Loop condition
# is redundant, but helps to reduce number of executions of _strip_once.
value = str(value)
while '<' in value and '>' in value:
new_value = _strip_once(value)
if value.count('<') == new_value.count('<'):
# _strip_once wasn't able to detect more tags.
break
value = new_value
return value
@keep_lazy_text
def strip_spaces_between_tags(value):
"""Return the given HTML with spaces between tags removed."""
return re.sub(r'>\s+<', '><', str(value))
def smart_urlquote(url):
"""Quote a URL if it isn't already quoted."""
def unquote_quote(segment):
segment = unquote(segment)
# Tilde is part of RFC3986 Unreserved Characters
# https://tools.ietf.org/html/rfc3986#section-2.3
# See also https://bugs.python.org/issue16285
return quote(segment, safe=RFC3986_SUBDELIMS + RFC3986_GENDELIMS + '~')
# Handle IDN before quoting.
try:
scheme, netloc, path, query, fragment = urlsplit(url)
except ValueError:
# invalid IPv6 URL (normally square brackets in hostname part).
return unquote_quote(url)
try:
netloc = punycode(netloc) # IDN -> ACE
except UnicodeError: # invalid domain part
return unquote_quote(url)
if query:
# Separately unquoting key/value, so as to not mix querystring separators
# included in query values. See #22267.
query_parts = [(unquote(q[0]), unquote(q[1]))
for q in parse_qsl(query, keep_blank_values=True)]
# urlencode will take care of quoting
query = urlencode(query_parts)
path = unquote_quote(path)
fragment = unquote_quote(fragment)
return urlunsplit((scheme, netloc, path, query, fragment))
class Urlizer:
"""
Convert any URLs in text into clickable links.
Work on http://, https://, www. links, and also on links ending in one of
the original seven gTLDs (.com, .edu, .gov, .int, .mil, .net, and .org).
Links can have trailing punctuation (periods, commas, close-parens) and
leading punctuation (opening parens) and it'll still do the right thing.
"""
trailing_punctuation_chars = '.,:;!'
wrapping_punctuation = [('(', ')'), ('[', ']')]
simple_url_re = _lazy_re_compile(r'^https?://\[?\w', re.IGNORECASE)
simple_url_2_re = _lazy_re_compile(
r'^www\.|^(?!http)\w[^@]+\.(com|edu|gov|int|mil|net|org)($|/.*)$',
re.IGNORECASE
)
word_split_re = _lazy_re_compile(r'''([\s<>"']+)''')
mailto_template = 'mailto:{local}@{domain}'
url_template = '<a href="{href}"{attrs}>{url}</a>'
def __call__(self, text, trim_url_limit=None, nofollow=False, autoescape=False):
"""
If trim_url_limit is not None, truncate the URLs in the link text
longer than this limit to trim_url_limit - 1 characters and append an
ellipsis.
If nofollow is True, give the links a rel="nofollow" attribute.
If autoescape is True, autoescape the link text and URLs.
"""
safe_input = isinstance(text, SafeData)
words = self.word_split_re.split(str(text))
return ''.join([
self.handle_word(
word,
safe_input=safe_input,
trim_url_limit=trim_url_limit,
nofollow=nofollow,
autoescape=autoescape,
) for word in words
])
def handle_word(
self, word, safe_input, trim_url_limit=None, nofollow=False, autoescape=False,
):
if '.' in word or '@' in word or ':' in word:
# lead: Punctuation trimmed from the beginning of the word.
# middle: State of the word.
# trail: Punctuation trimmed from the end of the word.
lead, middle, trail = self.trim_punctuation(word)
# Make URL we want to point to.
url = None
nofollow_attr = ' rel="nofollow"' if nofollow else ''
if self.simple_url_re.match(middle):
url = smart_urlquote(html.unescape(middle))
elif self.simple_url_2_re.match(middle):
url = smart_urlquote('http://%s' % html.unescape(middle))
elif ':' not in middle and self.is_email_simple(middle):
local, domain = middle.rsplit('@', 1)
try:
domain = punycode(domain)
except UnicodeError:
return word
url = self.mailto_template.format(local=local, domain=domain)
nofollow_attr = ''
# Make link.
if url:
trimmed = self.trim_url(middle, trim_url_limit=trim_url_limit)
if autoescape and not safe_input:
lead, trail = escape(lead), escape(trail)
trimmed = escape(trimmed)
middle = self.url_template.format(
href=escape(url),
attrs=nofollow_attr,
url=trimmed,
)
return mark_safe(f'{lead}{middle}{trail}')
else:
if safe_input:
return mark_safe(word)
elif autoescape:
return escape(word)
elif safe_input:
return mark_safe(word)
elif autoescape:
return escape(word)
return word
def trim_url(self, x, trim_url_limit):
if trim_url_limit is None or len(x) <= trim_url_limit:
return x
return '%s…' % x[:max(0, trim_url_limit - 1)]
def trim_punctuation(self, word):
"""
Trim trailing and wrapping punctuation from `word`. Return the items of
the new state.
"""
lead, middle, trail = '', word, ''
# Continue trimming until middle remains unchanged.
trimmed_something = True
while trimmed_something:
trimmed_something = False
# Trim wrapping punctuation.
for opening, closing in self.wrapping_punctuation:
if middle.startswith(opening):
middle = middle[len(opening):]
lead += opening
trimmed_something = True
# Keep parentheses at the end only if they're balanced.
if (
middle.endswith(closing) and
middle.count(closing) == middle.count(opening) + 1
):
middle = middle[:-len(closing)]
trail = closing + trail
trimmed_something = True
# Trim trailing punctuation (after trimming wrapping punctuation,
# as encoded entities contain ';'). Unescape entities to avoid
# breaking them by removing ';'.
middle_unescaped = html.unescape(middle)
stripped = middle_unescaped.rstrip(self.trailing_punctuation_chars)
if middle_unescaped != stripped:
punctuation_count = len(middle_unescaped) - len(stripped)
trail = middle[-punctuation_count:] + trail
middle = middle[:-punctuation_count]
trimmed_something = True
return lead, middle, trail
@staticmethod
def is_email_simple(value):
"""Return True if value looks like an email address."""
# An @ must be in the middle of the value.
if '@' not in value or value.startswith('@') or value.endswith('@'):
return False
try:
p1, p2 = value.split('@')
except ValueError:
# value contains more than one @.
return False
# Dot must be in p2 (e.g. example.com)
if '.' not in p2 or p2.startswith('.'):
return False
return True
urlizer = Urlizer()
@keep_lazy_text
def urlize(text, trim_url_limit=None, nofollow=False, autoescape=False):
return urlizer(text, trim_url_limit=trim_url_limit, nofollow=nofollow, autoescape=autoescape)
def avoid_wrapping(value):
"""
Avoid text wrapping in the middle of a phrase by adding non-breaking
spaces where there previously were normal spaces.
"""
return value.replace(" ", "\xa0")
def html_safe(klass):
"""
A decorator that defines the __html__ method. This helps non-Django
templates to detect classes whose __str__ methods return SafeString.
"""
if '__html__' in klass.__dict__:
raise ValueError(
"can't apply @html_safe to %s because it defines "
"__html__()." % klass.__name__
)
if '__str__' not in klass.__dict__:
raise ValueError(
"can't apply @html_safe to %s because it doesn't "
"define __str__()." % klass.__name__
)
klass_str = klass.__str__
klass.__str__ = lambda self: mark_safe(klass_str(self))
klass.__html__ = lambda self: str(self)
return klass
|
0cf901471e3f7e8586c5f8af7551e17f07061a211e3de585b1af61dcfdac6699 | import bisect
import copy
import inspect
from collections import defaultdict
from django.apps import apps
from django.conf import settings
from django.core.exceptions import FieldDoesNotExist, ImproperlyConfigured
from django.db import connections
from django.db.models import AutoField, Manager, OrderWrt, UniqueConstraint
from django.db.models.query_utils import PathInfo
from django.utils.datastructures import ImmutableList, OrderedSet
from django.utils.functional import cached_property
from django.utils.module_loading import import_string
from django.utils.text import camel_case_to_spaces, format_lazy
from django.utils.translation import override
PROXY_PARENTS = object()
EMPTY_RELATION_TREE = ()
IMMUTABLE_WARNING = (
"The return type of '%s' should never be mutated. If you want to manipulate this list "
"for your own use, make a copy first."
)
DEFAULT_NAMES = (
'verbose_name', 'verbose_name_plural', 'db_table', 'ordering',
'unique_together', 'permissions', 'get_latest_by', 'order_with_respect_to',
'app_label', 'db_tablespace', 'abstract', 'managed', 'proxy', 'swappable',
'auto_created', 'index_together', 'apps', 'default_permissions',
'select_on_save', 'default_related_name', 'required_db_features',
'required_db_vendor', 'base_manager_name', 'default_manager_name',
'indexes', 'constraints',
)
def normalize_together(option_together):
"""
option_together can be either a tuple of tuples, or a single
tuple of two strings. Normalize it to a tuple of tuples, so that
calling code can uniformly expect that.
"""
try:
if not option_together:
return ()
if not isinstance(option_together, (tuple, list)):
raise TypeError
first_element = option_together[0]
if not isinstance(first_element, (tuple, list)):
option_together = (option_together,)
# Normalize everything to tuples
return tuple(tuple(ot) for ot in option_together)
except TypeError:
# If the value of option_together isn't valid, return it
# verbatim; this will be picked up by the check framework later.
return option_together
def make_immutable_fields_list(name, data):
return ImmutableList(data, warning=IMMUTABLE_WARNING % name)
class Options:
FORWARD_PROPERTIES = {
'fields', 'many_to_many', 'concrete_fields', 'local_concrete_fields',
'_forward_fields_map', 'managers', 'managers_map', 'base_manager',
'default_manager',
}
REVERSE_PROPERTIES = {'related_objects', 'fields_map', '_relation_tree'}
default_apps = apps
def __init__(self, meta, app_label=None):
self._get_fields_cache = {}
self.local_fields = []
self.local_many_to_many = []
self.private_fields = []
self.local_managers = []
self.base_manager_name = None
self.default_manager_name = None
self.model_name = None
self.verbose_name = None
self.verbose_name_plural = None
self.db_table = ''
self.ordering = []
self._ordering_clash = False
self.indexes = []
self.constraints = []
self.unique_together = []
self.index_together = []
self.select_on_save = False
self.default_permissions = ('add', 'change', 'delete', 'view')
self.permissions = []
self.object_name = None
self.app_label = app_label
self.get_latest_by = None
self.order_with_respect_to = None
self.db_tablespace = settings.DEFAULT_TABLESPACE
self.required_db_features = []
self.required_db_vendor = None
self.meta = meta
self.pk = None
self.auto_field = None
self.abstract = False
self.managed = True
self.proxy = False
# For any class that is a proxy (including automatically created
# classes for deferred object loading), proxy_for_model tells us
# which class this model is proxying. Note that proxy_for_model
# can create a chain of proxy models. For non-proxy models, the
# variable is always None.
self.proxy_for_model = None
# For any non-abstract class, the concrete class is the model
# in the end of the proxy_for_model chain. In particular, for
# concrete models, the concrete_model is always the class itself.
self.concrete_model = None
self.swappable = None
self.parents = {}
self.auto_created = False
# List of all lookups defined in ForeignKey 'limit_choices_to' options
# from *other* models. Needed for some admin checks. Internal use only.
self.related_fkey_lookups = []
# A custom app registry to use, if you're making a separate model set.
self.apps = self.default_apps
self.default_related_name = None
@property
def label(self):
return '%s.%s' % (self.app_label, self.object_name)
@property
def label_lower(self):
return '%s.%s' % (self.app_label, self.model_name)
@property
def app_config(self):
# Don't go through get_app_config to avoid triggering imports.
return self.apps.app_configs.get(self.app_label)
def contribute_to_class(self, cls, name):
from django.db import connection
from django.db.backends.utils import truncate_name
cls._meta = self
self.model = cls
# First, construct the default values for these options.
self.object_name = cls.__name__
self.model_name = self.object_name.lower()
self.verbose_name = camel_case_to_spaces(self.object_name)
# Store the original user-defined values for each option,
# for use when serializing the model definition
self.original_attrs = {}
# Next, apply any overridden values from 'class Meta'.
if self.meta:
meta_attrs = self.meta.__dict__.copy()
for name in self.meta.__dict__:
# Ignore any private attributes that Django doesn't care about.
# NOTE: We can't modify a dictionary's contents while looping
# over it, so we loop over the *original* dictionary instead.
if name.startswith('_'):
del meta_attrs[name]
for attr_name in DEFAULT_NAMES:
if attr_name in meta_attrs:
setattr(self, attr_name, meta_attrs.pop(attr_name))
self.original_attrs[attr_name] = getattr(self, attr_name)
elif hasattr(self.meta, attr_name):
setattr(self, attr_name, getattr(self.meta, attr_name))
self.original_attrs[attr_name] = getattr(self, attr_name)
self.unique_together = normalize_together(self.unique_together)
self.index_together = normalize_together(self.index_together)
# App label/class name interpolation for names of constraints and
# indexes.
if not getattr(cls._meta, 'abstract', False):
for attr_name in {'constraints', 'indexes'}:
objs = getattr(self, attr_name, [])
setattr(self, attr_name, self._format_names_with_class(cls, objs))
# verbose_name_plural is a special case because it uses a 's'
# by default.
if self.verbose_name_plural is None:
self.verbose_name_plural = format_lazy('{}s', self.verbose_name)
# order_with_respect_and ordering are mutually exclusive.
self._ordering_clash = bool(self.ordering and self.order_with_respect_to)
# Any leftover attributes must be invalid.
if meta_attrs != {}:
raise TypeError("'class Meta' got invalid attribute(s): %s" % ','.join(meta_attrs))
else:
self.verbose_name_plural = format_lazy('{}s', self.verbose_name)
del self.meta
# If the db_table wasn't provided, use the app_label + model_name.
if not self.db_table:
self.db_table = "%s_%s" % (self.app_label, self.model_name)
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
def _format_names_with_class(self, cls, objs):
"""App label/class name interpolation for object names."""
new_objs = []
for obj in objs:
obj = obj.clone()
obj.name = obj.name % {
'app_label': cls._meta.app_label.lower(),
'class': cls.__name__.lower(),
}
new_objs.append(obj)
return new_objs
def _get_default_pk_class(self):
pk_class_path = getattr(
self.app_config,
'default_auto_field',
settings.DEFAULT_AUTO_FIELD,
)
if self.app_config and self.app_config._is_default_auto_field_overridden:
app_config_class = type(self.app_config)
source = (
f'{app_config_class.__module__}.'
f'{app_config_class.__qualname__}.default_auto_field'
)
else:
source = 'DEFAULT_AUTO_FIELD'
if not pk_class_path:
raise ImproperlyConfigured(f'{source} must not be empty.')
try:
pk_class = import_string(pk_class_path)
except ImportError as e:
msg = (
f"{source} refers to the module '{pk_class_path}' that could "
f"not be imported."
)
raise ImproperlyConfigured(msg) from e
if not issubclass(pk_class, AutoField):
raise ValueError(
f"Primary key '{pk_class_path}' referred by {source} must "
f"subclass AutoField."
)
return pk_class
def _prepare(self, model):
if self.order_with_respect_to:
# The app registry will not be ready at this point, so we cannot
# use get_field().
query = self.order_with_respect_to
try:
self.order_with_respect_to = next(
f for f in self._get_fields(reverse=False)
if f.name == query or f.attname == query
)
except StopIteration:
raise FieldDoesNotExist("%s has no field named '%s'" % (self.object_name, query))
self.ordering = ('_order',)
if not any(isinstance(field, OrderWrt) for field in model._meta.local_fields):
model.add_to_class('_order', OrderWrt())
else:
self.order_with_respect_to = None
if self.pk is None:
if self.parents:
# Promote the first parent link in lieu of adding yet another
# field.
field = next(iter(self.parents.values()))
# Look for a local field with the same name as the
# first parent link. If a local field has already been
# created, use it instead of promoting the parent
already_created = [fld for fld in self.local_fields if fld.name == field.name]
if already_created:
field = already_created[0]
field.primary_key = True
self.setup_pk(field)
else:
pk_class = self._get_default_pk_class()
auto = pk_class(verbose_name='ID', primary_key=True, auto_created=True)
model.add_to_class('id', auto)
def add_manager(self, manager):
self.local_managers.append(manager)
self._expire_cache()
def add_field(self, field, private=False):
# Insert the given field in the order in which it was created, using
# the "creation_counter" attribute of the field.
# Move many-to-many related fields from self.fields into
# self.many_to_many.
if private:
self.private_fields.append(field)
elif field.is_relation and field.many_to_many:
bisect.insort(self.local_many_to_many, field)
else:
bisect.insort(self.local_fields, field)
self.setup_pk(field)
# If the field being added is a relation to another known field,
# expire the cache on this field and the forward cache on the field
# being referenced, because there will be new relationships in the
# cache. Otherwise, expire the cache of references *to* this field.
# The mechanism for getting at the related model is slightly odd -
# ideally, we'd just ask for field.related_model. However, related_model
# is a cached property, and all the models haven't been loaded yet, so
# we need to make sure we don't cache a string reference.
if field.is_relation and hasattr(field.remote_field, 'model') and field.remote_field.model:
try:
field.remote_field.model._meta._expire_cache(forward=False)
except AttributeError:
pass
self._expire_cache()
else:
self._expire_cache(reverse=False)
def setup_pk(self, field):
if not self.pk and field.primary_key:
self.pk = field
field.serialize = False
def setup_proxy(self, target):
"""
Do the internal setup so that the current model is a proxy for
"target".
"""
self.pk = target._meta.pk
self.proxy_for_model = target
self.db_table = target._meta.db_table
def __repr__(self):
return '<Options for %s>' % self.object_name
def __str__(self):
return self.label_lower
def can_migrate(self, connection):
"""
Return True if the model can/should be migrated on the `connection`.
`connection` can be either a real connection or a connection alias.
"""
if self.proxy or self.swapped or not self.managed:
return False
if isinstance(connection, str):
connection = connections[connection]
if self.required_db_vendor:
return self.required_db_vendor == connection.vendor
if self.required_db_features:
return all(getattr(connection.features, feat, False)
for feat in self.required_db_features)
return True
@property
def verbose_name_raw(self):
"""Return the untranslated verbose name."""
with override(None):
return str(self.verbose_name)
@property
def swapped(self):
"""
Has this model been swapped out for another? If so, return the model
name of the replacement; otherwise, return None.
For historical reasons, model name lookups using get_model() are
case insensitive, so we make sure we are case insensitive here.
"""
if self.swappable:
swapped_for = getattr(settings, self.swappable, None)
if swapped_for:
try:
swapped_label, swapped_object = swapped_for.split('.')
except ValueError:
# setting not in the format app_label.model_name
# raising ImproperlyConfigured here causes problems with
# test cleanup code - instead it is raised in get_user_model
# or as part of validation.
return swapped_for
if '%s.%s' % (swapped_label, swapped_object.lower()) != self.label_lower:
return swapped_for
return None
@cached_property
def managers(self):
managers = []
seen_managers = set()
bases = (b for b in self.model.mro() if hasattr(b, '_meta'))
for depth, base in enumerate(bases):
for manager in base._meta.local_managers:
if manager.name in seen_managers:
continue
manager = copy.copy(manager)
manager.model = self.model
seen_managers.add(manager.name)
managers.append((depth, manager.creation_counter, manager))
return make_immutable_fields_list(
"managers",
(m[2] for m in sorted(managers)),
)
@cached_property
def managers_map(self):
return {manager.name: manager for manager in self.managers}
@cached_property
def base_manager(self):
base_manager_name = self.base_manager_name
if not base_manager_name:
# Get the first parent's base_manager_name if there's one.
for parent in self.model.mro()[1:]:
if hasattr(parent, '_meta'):
if parent._base_manager.name != '_base_manager':
base_manager_name = parent._base_manager.name
break
if base_manager_name:
try:
return self.managers_map[base_manager_name]
except KeyError:
raise ValueError(
"%s has no manager named %r" % (
self.object_name,
base_manager_name,
)
)
manager = Manager()
manager.name = '_base_manager'
manager.model = self.model
manager.auto_created = True
return manager
@cached_property
def default_manager(self):
default_manager_name = self.default_manager_name
if not default_manager_name and not self.local_managers:
# Get the first parent's default_manager_name if there's one.
for parent in self.model.mro()[1:]:
if hasattr(parent, '_meta'):
default_manager_name = parent._meta.default_manager_name
break
if default_manager_name:
try:
return self.managers_map[default_manager_name]
except KeyError:
raise ValueError(
"%s has no manager named %r" % (
self.object_name,
default_manager_name,
)
)
if self.managers:
return self.managers[0]
@cached_property
def fields(self):
"""
Return a list of all forward fields on the model and its parents,
excluding ManyToManyFields.
Private API intended only to be used by Django itself; get_fields()
combined with filtering of field properties is the public API for
obtaining this field list.
"""
# For legacy reasons, the fields property should only contain forward
# fields that are not private or with a m2m cardinality. Therefore we
# pass these three filters as filters to the generator.
# The third lambda is a longwinded way of checking f.related_model - we don't
# use that property directly because related_model is a cached property,
# and all the models may not have been loaded yet; we don't want to cache
# the string reference to the related_model.
def is_not_an_m2m_field(f):
return not (f.is_relation and f.many_to_many)
def is_not_a_generic_relation(f):
return not (f.is_relation and f.one_to_many)
def is_not_a_generic_foreign_key(f):
return not (
f.is_relation and f.many_to_one and not (hasattr(f.remote_field, 'model') and f.remote_field.model)
)
return make_immutable_fields_list(
"fields",
(f for f in self._get_fields(reverse=False)
if is_not_an_m2m_field(f) and is_not_a_generic_relation(f) and is_not_a_generic_foreign_key(f))
)
@cached_property
def concrete_fields(self):
"""
Return a list of all concrete fields on the model and its parents.
Private API intended only to be used by Django itself; get_fields()
combined with filtering of field properties is the public API for
obtaining this field list.
"""
return make_immutable_fields_list(
"concrete_fields", (f for f in self.fields if f.concrete)
)
@cached_property
def local_concrete_fields(self):
"""
Return a list of all concrete fields on the model.
Private API intended only to be used by Django itself; get_fields()
combined with filtering of field properties is the public API for
obtaining this field list.
"""
return make_immutable_fields_list(
"local_concrete_fields", (f for f in self.local_fields if f.concrete)
)
@cached_property
def many_to_many(self):
"""
Return a list of all many to many fields on the model and its parents.
Private API intended only to be used by Django itself; get_fields()
combined with filtering of field properties is the public API for
obtaining this list.
"""
return make_immutable_fields_list(
"many_to_many",
(f for f in self._get_fields(reverse=False) if f.is_relation and f.many_to_many)
)
@cached_property
def related_objects(self):
"""
Return all related objects pointing to the current model. The related
objects can come from a one-to-one, one-to-many, or many-to-many field
relation type.
Private API intended only to be used by Django itself; get_fields()
combined with filtering of field properties is the public API for
obtaining this field list.
"""
all_related_fields = self._get_fields(forward=False, reverse=True, include_hidden=True)
return make_immutable_fields_list(
"related_objects",
(obj for obj in all_related_fields if not obj.hidden or obj.field.many_to_many)
)
@cached_property
def _forward_fields_map(self):
res = {}
fields = self._get_fields(reverse=False)
for field in fields:
res[field.name] = field
# Due to the way Django's internals work, get_field() should also
# be able to fetch a field by attname. In the case of a concrete
# field with relation, includes the *_id name too
try:
res[field.attname] = field
except AttributeError:
pass
return res
@cached_property
def fields_map(self):
res = {}
fields = self._get_fields(forward=False, include_hidden=True)
for field in fields:
res[field.name] = field
# Due to the way Django's internals work, get_field() should also
# be able to fetch a field by attname. In the case of a concrete
# field with relation, includes the *_id name too
try:
res[field.attname] = field
except AttributeError:
pass
return res
def get_field(self, field_name):
"""
Return a field instance given the name of a forward or reverse field.
"""
try:
# In order to avoid premature loading of the relation tree
# (expensive) we prefer checking if the field is a forward field.
return self._forward_fields_map[field_name]
except KeyError:
# If the app registry is not ready, reverse fields are
# unavailable, therefore we throw a FieldDoesNotExist exception.
if not self.apps.models_ready:
raise FieldDoesNotExist(
"%s has no field named '%s'. The app cache isn't ready yet, "
"so if this is an auto-created related field, it won't "
"be available yet." % (self.object_name, field_name)
)
try:
# Retrieve field instance by name from cached or just-computed
# field map.
return self.fields_map[field_name]
except KeyError:
raise FieldDoesNotExist("%s has no field named '%s'" % (self.object_name, field_name))
def get_base_chain(self, model):
"""
Return a list of parent classes leading to `model` (ordered from
closest to most distant ancestor). This has to handle the case where
`model` is a grandparent or even more distant relation.
"""
if not self.parents:
return []
if model in self.parents:
return [model]
for parent in self.parents:
res = parent._meta.get_base_chain(model)
if res:
res.insert(0, parent)
return res
return []
def get_parent_list(self):
"""
Return all the ancestors of this model as a list ordered by MRO.
Useful for determining if something is an ancestor, regardless of lineage.
"""
result = OrderedSet(self.parents)
for parent in self.parents:
for ancestor in parent._meta.get_parent_list():
result.add(ancestor)
return list(result)
def get_ancestor_link(self, ancestor):
"""
Return the field on the current model which points to the given
"ancestor". This is possible an indirect link (a pointer to a parent
model, which points, eventually, to the ancestor). Used when
constructing table joins for model inheritance.
Return None if the model isn't an ancestor of this one.
"""
if ancestor in self.parents:
return self.parents[ancestor]
for parent in self.parents:
# Tries to get a link field from the immediate parent
parent_link = parent._meta.get_ancestor_link(ancestor)
if parent_link:
# In case of a proxied model, the first link
# of the chain to the ancestor is that parent
# links
return self.parents[parent] or parent_link
def get_path_to_parent(self, parent):
"""
Return a list of PathInfos containing the path from the current
model to the parent model, or an empty list if parent is not a
parent of the current model.
"""
if self.model is parent:
return []
# Skip the chain of proxy to the concrete proxied model.
proxied_model = self.concrete_model
path = []
opts = self
for int_model in self.get_base_chain(parent):
if int_model is proxied_model:
opts = int_model._meta
else:
final_field = opts.parents[int_model]
targets = (final_field.remote_field.get_related_field(),)
opts = int_model._meta
path.append(PathInfo(
from_opts=final_field.model._meta,
to_opts=opts,
target_fields=targets,
join_field=final_field,
m2m=False,
direct=True,
filtered_relation=None,
))
return path
def get_path_from_parent(self, parent):
"""
Return a list of PathInfos containing the path from the parent
model to the current model, or an empty list if parent is not a
parent of the current model.
"""
if self.model is parent:
return []
model = self.concrete_model
# Get a reversed base chain including both the current and parent
# models.
chain = model._meta.get_base_chain(parent)
chain.reverse()
chain.append(model)
# Construct a list of the PathInfos between models in chain.
path = []
for i, ancestor in enumerate(chain[:-1]):
child = chain[i + 1]
link = child._meta.get_ancestor_link(ancestor)
path.extend(link.get_reverse_path_info())
return path
def _populate_directed_relation_graph(self):
"""
This method is used by each model to find its reverse objects. As this
method is very expensive and is accessed frequently (it looks up every
field in a model, in every app), it is computed on first access and then
is set as a property on every model.
"""
related_objects_graph = defaultdict(list)
all_models = self.apps.get_models(include_auto_created=True)
for model in all_models:
opts = model._meta
# Abstract model's fields are copied to child models, hence we will
# see the fields from the child models.
if opts.abstract:
continue
fields_with_relations = (
f for f in opts._get_fields(reverse=False, include_parents=False)
if f.is_relation and f.related_model is not None
)
for f in fields_with_relations:
if not isinstance(f.remote_field.model, str):
remote_label = f.remote_field.model._meta.concrete_model._meta.label
related_objects_graph[remote_label].append(f)
for model in all_models:
# Set the relation_tree using the internal __dict__. In this way
# we avoid calling the cached property. In attribute lookup,
# __dict__ takes precedence over a data descriptor (such as
# @cached_property). This means that the _meta._relation_tree is
# only called if related_objects is not in __dict__.
related_objects = related_objects_graph[model._meta.concrete_model._meta.label]
model._meta.__dict__['_relation_tree'] = related_objects
# It seems it is possible that self is not in all_models, so guard
# against that with default for get().
return self.__dict__.get('_relation_tree', EMPTY_RELATION_TREE)
@cached_property
def _relation_tree(self):
return self._populate_directed_relation_graph()
def _expire_cache(self, forward=True, reverse=True):
# This method is usually called by apps.cache_clear(), when the
# registry is finalized, or when a new field is added.
if forward:
for cache_key in self.FORWARD_PROPERTIES:
if cache_key in self.__dict__:
delattr(self, cache_key)
if reverse and not self.abstract:
for cache_key in self.REVERSE_PROPERTIES:
if cache_key in self.__dict__:
delattr(self, cache_key)
self._get_fields_cache = {}
def get_fields(self, include_parents=True, include_hidden=False):
"""
Return a list of fields associated to the model. By default, include
forward and reverse fields, fields derived from inheritance, but not
hidden fields. The returned fields can be changed using the parameters:
- include_parents: include fields derived from inheritance
- include_hidden: include fields that have a related_name that
starts with a "+"
"""
if include_parents is False:
include_parents = PROXY_PARENTS
return self._get_fields(include_parents=include_parents, include_hidden=include_hidden)
def _get_fields(self, forward=True, reverse=True, include_parents=True, include_hidden=False,
seen_models=None):
"""
Internal helper function to return fields of the model.
* If forward=True, then fields defined on this model are returned.
* If reverse=True, then relations pointing to this model are returned.
* If include_hidden=True, then fields with is_hidden=True are returned.
* The include_parents argument toggles if fields from parent models
should be included. It has three values: True, False, and
PROXY_PARENTS. When set to PROXY_PARENTS, the call will return all
fields defined for the current model or any of its parents in the
parent chain to the model's concrete model.
"""
if include_parents not in (True, False, PROXY_PARENTS):
raise TypeError("Invalid argument for include_parents: %s" % (include_parents,))
# This helper function is used to allow recursion in ``get_fields()``
# implementation and to provide a fast way for Django's internals to
# access specific subsets of fields.
# We must keep track of which models we have already seen. Otherwise we
# could include the same field multiple times from different models.
topmost_call = seen_models is None
if topmost_call:
seen_models = set()
seen_models.add(self.model)
# Creates a cache key composed of all arguments
cache_key = (forward, reverse, include_parents, include_hidden, topmost_call)
try:
# In order to avoid list manipulation. Always return a shallow copy
# of the results.
return self._get_fields_cache[cache_key]
except KeyError:
pass
fields = []
# Recursively call _get_fields() on each parent, with the same
# options provided in this call.
if include_parents is not False:
for parent in self.parents:
# In diamond inheritance it is possible that we see the same
# model from two different routes. In that case, avoid adding
# fields from the same parent again.
if parent in seen_models:
continue
if (parent._meta.concrete_model != self.concrete_model and
include_parents == PROXY_PARENTS):
continue
for obj in parent._meta._get_fields(
forward=forward, reverse=reverse, include_parents=include_parents,
include_hidden=include_hidden, seen_models=seen_models):
if not getattr(obj, 'parent_link', False) or obj.model == self.concrete_model:
fields.append(obj)
if reverse and not self.proxy:
# Tree is computed once and cached until the app cache is expired.
# It is composed of a list of fields pointing to the current model
# from other models.
all_fields = self._relation_tree
for field in all_fields:
# If hidden fields should be included or the relation is not
# intentionally hidden, add to the fields dict.
if include_hidden or not field.remote_field.hidden:
fields.append(field.remote_field)
if forward:
fields += self.local_fields
fields += self.local_many_to_many
# Private fields are recopied to each child model, and they get a
# different model as field.model in each child. Hence we have to
# add the private fields separately from the topmost call. If we
# did this recursively similar to local_fields, we would get field
# instances with field.model != self.model.
if topmost_call:
fields += self.private_fields
# In order to avoid list manipulation. Always
# return a shallow copy of the results
fields = make_immutable_fields_list("get_fields()", fields)
# Store result into cache for later access
self._get_fields_cache[cache_key] = fields
return fields
@cached_property
def total_unique_constraints(self):
"""
Return a list of total unique constraints. Useful for determining set
of fields guaranteed to be unique for all rows.
"""
return [
constraint
for constraint in self.constraints
if isinstance(constraint, UniqueConstraint) and constraint.condition is None
]
@cached_property
def _property_names(self):
"""Return a set of the names of the properties defined on the model."""
names = []
for name in dir(self.model):
attr = inspect.getattr_static(self.model, name)
if isinstance(attr, property):
names.append(name)
return frozenset(names)
@cached_property
def db_returning_fields(self):
"""
Private API intended only to be used by Django itself.
Fields to be returned after a database insert.
"""
return [
field for field in self._get_fields(forward=True, reverse=False, include_parents=PROXY_PARENTS)
if getattr(field, 'db_returning', False)
]
|
729d328c9c4bbe4eff32ee5c2e9531ac2f14101394fd42d67ccbf5c1cfd004b2 | from django.db import DatabaseError, InterfaceError
from django.db.backends.base.features import BaseDatabaseFeatures
from django.utils.functional import cached_property
class DatabaseFeatures(BaseDatabaseFeatures):
# Oracle crashes with "ORA-00932: inconsistent datatypes: expected - got
# BLOB" when grouping by LOBs (#24096).
allows_group_by_lob = False
interprets_empty_strings_as_nulls = True
has_select_for_update = True
has_select_for_update_nowait = True
has_select_for_update_skip_locked = True
has_select_for_update_of = True
select_for_update_of_column = True
can_return_columns_from_insert = True
supports_subqueries_in_group_by = False
ignores_unnecessary_order_by_in_subqueries = False
supports_transactions = True
supports_timezones = False
has_native_duration_field = True
can_defer_constraint_checks = True
supports_partially_nullable_unique_constraints = False
supports_deferrable_unique_constraints = True
truncates_names = True
supports_tablespaces = True
supports_sequence_reset = False
can_introspect_materialized_views = True
atomic_transactions = False
supports_combined_alters = False
nulls_order_largest = True
requires_literal_defaults = True
closed_cursor_error_class = InterfaceError
bare_select_suffix = " FROM DUAL"
# select for update with limit can be achieved on Oracle, but not with the current backend.
supports_select_for_update_with_limit = False
supports_temporal_subtraction = True
# Oracle doesn't ignore quoted identifiers case but the current backend
# does by uppercasing all identifiers.
ignores_table_name_case = True
supports_index_on_text_field = False
create_test_procedure_without_params_sql = """
CREATE PROCEDURE "TEST_PROCEDURE" AS
V_I INTEGER;
BEGIN
V_I := 1;
END;
"""
create_test_procedure_with_int_param_sql = """
CREATE PROCEDURE "TEST_PROCEDURE" (P_I INTEGER) AS
V_I INTEGER;
BEGIN
V_I := P_I;
END;
"""
supports_callproc_kwargs = True
supports_over_clause = True
supports_frame_range_fixed_distance = True
supports_ignore_conflicts = False
max_query_params = 2**16 - 1
supports_partial_indexes = False
supports_slicing_ordering_in_compound = True
allows_multiple_constraints_on_same_fields = False
supports_boolean_expr_in_select_clause = False
supports_primitives_in_json_field = False
supports_json_field_contains = False
supports_collation_on_textfield = False
test_collations = {
'ci': 'BINARY_CI',
'cs': 'BINARY',
'non_default': 'SWEDISH_CI',
'swedish_ci': 'SWEDISH_CI',
}
test_now_utc_template = "CURRENT_TIMESTAMP AT TIME ZONE 'UTC'"
django_test_skips = {
"Oracle doesn't support SHA224.": {
'db_functions.text.test_sha224.SHA224Tests.test_basic',
'db_functions.text.test_sha224.SHA224Tests.test_transform',
},
"Oracle doesn't support bitwise XOR.": {
'expressions.tests.ExpressionOperatorTests.test_lefthand_bitwise_xor',
'expressions.tests.ExpressionOperatorTests.test_lefthand_bitwise_xor_null',
},
"Oracle requires ORDER BY in row_number, ANSI:SQL doesn't.": {
'expressions_window.tests.WindowFunctionTests.test_row_number_no_ordering',
},
'Raises ORA-00600: internal error code.': {
'model_fields.test_jsonfield.TestQuerying.test_usage_in_subquery',
},
}
django_test_expected_failures = {
# A bug in Django/cx_Oracle with respect to string handling (#23843).
'annotations.tests.NonAggregateAnnotationTestCase.test_custom_functions',
'annotations.tests.NonAggregateAnnotationTestCase.test_custom_functions_can_ref_other_functions',
}
@cached_property
def introspected_field_types(self):
return {
**super().introspected_field_types,
'GenericIPAddressField': 'CharField',
'PositiveBigIntegerField': 'BigIntegerField',
'PositiveIntegerField': 'IntegerField',
'PositiveSmallIntegerField': 'IntegerField',
'SmallIntegerField': 'IntegerField',
'TimeField': 'DateTimeField',
}
@cached_property
def supports_collation_on_charfield(self):
with self.connection.cursor() as cursor:
try:
cursor.execute("SELECT CAST('a' AS VARCHAR2(4001)) FROM dual")
except DatabaseError as e:
if e.args[0].code == 910:
return False
raise
return True
|
6659fe486caec99a5b3a814586d62c0cdb115082f05c09f7dc945be9443315e9 | import operator
import platform
from django.db import transaction
from django.db.backends.base.features import BaseDatabaseFeatures
from django.db.utils import OperationalError
from django.utils.functional import cached_property
from .base import Database
class DatabaseFeatures(BaseDatabaseFeatures):
# SQLite can read from a cursor since SQLite 3.6.5, subject to the caveat
# that statements within a connection aren't isolated from each other. See
# https://sqlite.org/isolation.html.
can_use_chunked_reads = True
test_db_allows_multiple_connections = False
supports_unspecified_pk = True
supports_timezones = False
max_query_params = 999
supports_transactions = True
atomic_transactions = False
can_rollback_ddl = True
can_create_inline_fk = False
supports_paramstyle_pyformat = False
can_clone_databases = True
supports_temporal_subtraction = True
ignores_table_name_case = True
supports_cast_with_precision = False
time_cast_precision = 3
can_release_savepoints = True
has_case_insensitive_like = True
# Is "ALTER TABLE ... RENAME COLUMN" supported?
can_alter_table_rename_column = Database.sqlite_version_info >= (3, 25, 0)
supports_parentheses_in_compound = False
# Deferred constraint checks can be emulated on SQLite < 3.20 but not in a
# reasonably performant way.
supports_pragma_foreign_key_check = Database.sqlite_version_info >= (3, 20, 0)
can_defer_constraint_checks = supports_pragma_foreign_key_check
supports_functions_in_partial_indexes = Database.sqlite_version_info >= (3, 15, 0)
supports_over_clause = Database.sqlite_version_info >= (3, 25, 0)
supports_frame_range_fixed_distance = Database.sqlite_version_info >= (3, 28, 0)
supports_aggregate_filter_clause = Database.sqlite_version_info >= (3, 30, 1)
supports_order_by_nulls_modifier = Database.sqlite_version_info >= (3, 30, 0)
order_by_nulls_first = True
supports_json_field_contains = False
test_collations = {
'ci': 'nocase',
'cs': 'binary',
'non_default': 'nocase',
}
django_test_expected_failures = {
# The django_format_dtdelta() function doesn't properly handle mixed
# Date/DateTime fields and timedeltas.
'expressions.tests.FTimeDeltaTests.test_mixed_comparisons1',
}
@cached_property
def django_test_skips(self):
skips = {
'SQLite stores values rounded to 15 significant digits.': {
'model_fields.test_decimalfield.DecimalFieldTests.test_fetch_from_db_without_float_rounding',
},
'SQLite naively remakes the table on field alteration.': {
'schema.tests.SchemaTests.test_unique_no_unnecessary_fk_drops',
'schema.tests.SchemaTests.test_unique_and_reverse_m2m',
'schema.tests.SchemaTests.test_alter_field_default_doesnt_perform_queries',
'schema.tests.SchemaTests.test_rename_column_renames_deferred_sql_references',
},
"SQLite doesn't have a constraint.": {
'model_fields.test_integerfield.PositiveIntegerFieldTests.test_negative_values',
},
"SQLite doesn't support negative precision for ROUND().": {
'db_functions.math.test_round.RoundTests.test_null_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_decimal_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_float_with_negative_precision',
'db_functions.math.test_round.RoundTests.test_integer_with_negative_precision',
},
}
if Database.sqlite_version_info < (3, 27):
skips.update({
'Nondeterministic failure on SQLite < 3.27.': {
'expressions_window.tests.WindowFunctionTests.test_subquery_row_range_rank',
},
})
if self.connection.is_in_memory_db():
skips.update({
"the sqlite backend's close() method is a no-op when using an "
"in-memory database": {
'servers.test_liveserverthread.LiveServerThreadTest.test_closes_connections',
'servers.tests.LiveServerTestCloseConnectionTest.test_closes_connections',
},
})
return skips
@cached_property
def supports_atomic_references_rename(self):
# SQLite 3.28.0 bundled with MacOS 10.15 does not support renaming
# references atomically.
if platform.mac_ver()[0].startswith('10.15.') and Database.sqlite_version_info == (3, 28, 0):
return False
return Database.sqlite_version_info >= (3, 26, 0)
@cached_property
def introspected_field_types(self):
return{
**super().introspected_field_types,
'BigAutoField': 'AutoField',
'DurationField': 'BigIntegerField',
'GenericIPAddressField': 'CharField',
'SmallAutoField': 'AutoField',
}
@cached_property
def supports_json_field(self):
with self.connection.cursor() as cursor:
try:
with transaction.atomic(self.connection.alias):
cursor.execute('SELECT JSON(\'{"a": "b"}\')')
except OperationalError:
return False
return True
can_introspect_json_field = property(operator.attrgetter('supports_json_field'))
has_json_object_function = property(operator.attrgetter('supports_json_field'))
@cached_property
def can_return_columns_from_insert(self):
return Database.sqlite_version_info >= (3, 35)
can_return_rows_from_bulk_insert = property(operator.attrgetter('can_return_columns_from_insert'))
|
e1afb84e78fec05fc64ea2b33cd9c726d966df1388f868adf47a5bf88b060bb6 | import functools
import re
from unittest import mock
from django.apps import apps
from django.conf import settings
from django.contrib.auth.models import AbstractBaseUser
from django.core.validators import RegexValidator, validate_slug
from django.db import connection, migrations, models
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.graph import MigrationGraph
from django.db.migrations.loader import MigrationLoader
from django.db.migrations.questioner import MigrationQuestioner
from django.db.migrations.state import ModelState, ProjectState
from django.test import SimpleTestCase, TestCase, override_settings
from django.test.utils import isolate_lru_cache
from .models import FoodManager, FoodQuerySet
class DeconstructibleObject:
"""
A custom deconstructible object.
"""
def __init__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
def deconstruct(self):
return (
self.__module__ + '.' + self.__class__.__name__,
self.args,
self.kwargs
)
class AutodetectorTests(TestCase):
"""
Tests the migration autodetector.
"""
author_empty = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_name = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
author_name_null = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, null=True)),
])
author_name_longer = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=400)),
])
author_name_renamed = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("names", models.CharField(max_length=200)),
])
author_name_default = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default='Ada Lovelace')),
])
author_name_check_constraint = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
],
{'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]},
)
author_dates_of_birth_auto_now = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now=True)),
("date_time_of_birth", models.DateTimeField(auto_now=True)),
("time_of_birth", models.TimeField(auto_now=True)),
])
author_dates_of_birth_auto_now_add = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("date_of_birth", models.DateField(auto_now_add=True)),
("date_time_of_birth", models.DateTimeField(auto_now_add=True)),
("time_of_birth", models.TimeField(auto_now_add=True)),
])
author_name_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject())),
])
author_name_deconstructible_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_4 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=models.IntegerField())),
])
author_name_deconstructible_list_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 123])),
])
author_name_deconstructible_list_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=[DeconstructibleObject(), 999])),
])
author_name_deconstructible_tuple_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 123))),
])
author_name_deconstructible_tuple_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=(DeconstructibleObject(), 999))),
])
author_name_deconstructible_dict_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 123
})),
])
author_name_deconstructible_dict_3 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default={
'item': DeconstructibleObject(), 'otheritem': 999
})),
])
author_name_nested_deconstructible_1 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_2 = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2-changed'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_extra_arg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
None,
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
))),
])
author_name_nested_deconstructible_changed_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c-changed')),
))),
])
author_name_nested_deconstructible_extra_kwarg = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200, default=DeconstructibleObject(
DeconstructibleObject(1),
(DeconstructibleObject('t1'), DeconstructibleObject('t2'),),
a=DeconstructibleObject('A'),
b=DeconstructibleObject(B=DeconstructibleObject('c')),
c=None,
))),
])
author_custom_pk = ModelState("testapp", "Author", [("pk_field", models.IntegerField(primary_key=True))])
author_with_biography_non_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField()),
("biography", models.TextField()),
])
author_with_biography_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(blank=True)),
("biography", models.TextField(blank=True)),
])
author_with_book = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_book_order_wrt = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
], options={"order_with_respect_to": "book"})
author_renamed_with_book = ModelState("testapp", "Writer", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
author_with_publisher_string = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher_name", models.CharField(max_length=200)),
])
author_with_publisher = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
author_with_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("auth.User", models.CASCADE)),
])
author_with_custom_user = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
("user", models.ForeignKey("thirdapp.CustomUser", models.CASCADE)),
])
author_proxy = ModelState("testapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_options = ModelState("testapp", "AuthorProxy", [], {
"proxy": True,
"verbose_name": "Super Author",
}, ("testapp.author",))
author_proxy_notproxy = ModelState("testapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_third = ModelState("thirdapp", "AuthorProxy", [], {"proxy": True}, ("testapp.author",))
author_proxy_third_notproxy = ModelState("thirdapp", "AuthorProxy", [], {}, ("testapp.author",))
author_proxy_proxy = ModelState("testapp", "AAuthorProxyProxy", [], {"proxy": True}, ("testapp.authorproxy",))
author_unmanaged = ModelState("testapp", "AuthorUnmanaged", [], {"managed": False}, ("testapp.author",))
author_unmanaged_managed = ModelState("testapp", "AuthorUnmanaged", [], {}, ("testapp.author",))
author_unmanaged_default_pk = ModelState("testapp", "Author", [("id", models.AutoField(primary_key=True))])
author_unmanaged_custom_pk = ModelState("testapp", "Author", [
("pk_field", models.IntegerField(primary_key=True)),
])
author_with_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher")),
])
author_with_m2m_blank = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", blank=True)),
])
author_with_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Contract")),
])
author_with_renamed_m2m_through = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.ManyToManyField("testapp.Publisher", through="testapp.Deal")),
])
author_with_former_m2m = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("publishers", models.CharField(max_length=100)),
])
author_with_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
author_with_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_with_new_db_table_options = ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_two"})
author_renamed_with_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_one"})
author_renamed_with_new_db_table_options = ModelState("testapp", "NewAuthor", [
("id", models.AutoField(primary_key=True)),
], {"db_table": "author_three"})
contract = ModelState("testapp", "Contract", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
contract_renamed = ModelState("testapp", "Deal", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("publisher", models.ForeignKey("testapp.Publisher", models.CASCADE)),
])
publisher = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=100)),
])
publisher_with_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_aardvark_author = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Aardvark", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
publisher_with_book = ModelState("testapp", "Publisher", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Book", models.CASCADE)),
("name", models.CharField(max_length=100)),
])
other_pony = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
])
other_pony_food = ModelState("otherapp", "Pony", [
("id", models.AutoField(primary_key=True)),
], managers=[
('food_qs', FoodQuerySet.as_manager()),
('food_mgr', FoodManager('a', 'b')),
('food_mgr_kwargs', FoodManager('x', 'y', 3, 4)),
])
other_stable = ModelState("otherapp", "Stable", [("id", models.AutoField(primary_key=True))])
third_thing = ModelState("thirdapp", "Thing", [("id", models.AutoField(primary_key=True))])
book = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("thirdapp.AuthorProxy", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_proxy_proxy_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.AAuthorProxyProxy", models.CASCADE)),
])
book_migrations_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("migrations.UnmigratedModel", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_no_author_fk = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.IntegerField()),
("title", models.CharField(max_length=200)),
])
book_with_no_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("title", models.CharField(max_length=200)),
])
book_with_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_field_and_author_renamed = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("writer", models.ForeignKey("testapp.Writer", models.CASCADE)),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author")),
("title", models.CharField(max_length=200)),
])
book_with_multiple_authors_through_attribution = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("authors", models.ManyToManyField("testapp.Author", through="otherapp.Attribution")),
("title", models.CharField(max_length=200)),
])
book_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["author", "title"], name="book_title_author_idx")],
})
book_unordered_indexes = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"indexes": [models.Index(fields=["title", "author"], name="book_author_title_idx")],
})
book_foo_together = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("author", "title")},
"unique_together": {("author", "title")},
})
book_foo_together_2 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
book_foo_together_3 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield")},
"unique_together": {("title", "newfield")},
})
book_foo_together_4 = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("newfield2", models.IntegerField()),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "newfield2")},
"unique_together": {("title", "newfield2")},
})
attribution = ModelState("otherapp", "Attribution", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("testapp.Author", models.CASCADE)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
edition = ModelState("thirdapp", "Edition", [
("id", models.AutoField(primary_key=True)),
("book", models.ForeignKey("otherapp.Book", models.CASCADE)),
])
custom_user = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
], bases=(AbstractBaseUser,))
custom_user_no_inherit = ModelState("thirdapp", "CustomUser", [
("id", models.AutoField(primary_key=True)),
("username", models.CharField(max_length=255)),
])
aardvark = ModelState("thirdapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_testapp = ModelState("testapp", "Aardvark", [("id", models.AutoField(primary_key=True))])
aardvark_based_on_author = ModelState("testapp", "Aardvark", [], bases=("testapp.Author",))
aardvark_pk_fk_author = ModelState("testapp", "Aardvark", [
("id", models.OneToOneField("testapp.Author", models.CASCADE, primary_key=True)),
])
knight = ModelState("eggs", "Knight", [("id", models.AutoField(primary_key=True))])
rabbit = ModelState("eggs", "Rabbit", [
("id", models.AutoField(primary_key=True)),
("knight", models.ForeignKey("eggs.Knight", models.CASCADE)),
("parent", models.ForeignKey("eggs.Rabbit", models.CASCADE)),
], {
"unique_together": {("parent", "knight")},
"indexes": [models.Index(fields=["parent", "knight"], name='rabbit_circular_fk_index')],
})
def repr_changes(self, changes, include_dependencies=False):
output = ""
for app_label, migrations_ in sorted(changes.items()):
output += " %s:\n" % app_label
for migration in migrations_:
output += " %s\n" % migration.name
for operation in migration.operations:
output += " %s\n" % operation
if include_dependencies:
output += " Dependencies:\n"
if migration.dependencies:
for dep in migration.dependencies:
output += " %s\n" % (dep,)
else:
output += " None\n"
return output
def assertNumberMigrations(self, changes, app_label, number):
if len(changes.get(app_label, [])) != number:
self.fail("Incorrect number of migrations (%s) for %s (expected %s)\n%s" % (
len(changes.get(app_label, [])),
app_label,
number,
self.repr_changes(changes),
))
def assertMigrationDependencies(self, changes, app_label, position, dependencies):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if set(migration.dependencies) != set(dependencies):
self.fail("Migration dependencies mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
dependencies,
self.repr_changes(changes, include_dependencies=True),
))
def assertOperationTypes(self, changes, app_label, position, types):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
real_types = [operation.__class__.__name__ for operation in migration.operations]
if types != real_types:
self.fail("Operation type mismatch for %s.%s (expected %s):\n%s" % (
app_label,
migration.name,
types,
self.repr_changes(changes),
))
def assertOperationAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
for attr, value in attrs.items():
if getattr(operation, attr, None) != value:
self.fail("Attribute mismatch for %s.%s op #%s, %s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(operation, attr, None),
self.repr_changes(changes),
))
def assertOperationFieldAttributes(self, changes, app_label, position, operation_position, **attrs):
if not changes.get(app_label):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) < position + 1:
self.fail("No migration at index %s for %s\n%s" % (position, app_label, self.repr_changes(changes)))
migration = changes[app_label][position]
if len(changes[app_label]) < position + 1:
self.fail("No operation at index %s for %s.%s\n%s" % (
operation_position,
app_label,
migration.name,
self.repr_changes(changes),
))
operation = migration.operations[operation_position]
if not hasattr(operation, 'field'):
self.fail("No field attribute for %s.%s op #%s." % (
app_label,
migration.name,
operation_position,
))
field = operation.field
for attr, value in attrs.items():
if getattr(field, attr, None) != value:
self.fail("Field attribute mismatch for %s.%s op #%s, field.%s (expected %r, got %r):\n%s" % (
app_label,
migration.name,
operation_position,
attr,
value,
getattr(field, attr, None),
self.repr_changes(changes),
))
def make_project_state(self, model_states):
"Shortcut to make ProjectStates from lists of predefined models"
project_state = ProjectState()
for model_state in model_states:
project_state.add_model(model_state.clone())
return project_state
def get_changes(self, before_states, after_states, questioner=None):
if not isinstance(before_states, ProjectState):
before_states = self.make_project_state(before_states)
if not isinstance(after_states, ProjectState):
after_states = self.make_project_state(after_states)
return MigrationAutodetector(
before_states,
after_states,
questioner,
)._detect_changes()
def test_arrange_for_graph(self):
"""Tests auto-naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("otherapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([self.publisher, self.other_pony])
after = self.make_project_state([
self.author_empty, self.publisher, self.other_pony, self.other_stable,
])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
changes = autodetector.arrange_for_graph(changes, graph)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_author")
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, '0002_stable')
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_arrange_for_graph_with_multiple_initial(self):
# Make a fake graph.
graph = MigrationGraph()
# Use project state to make a new migration change set.
before = self.make_project_state([])
after = self.make_project_state([self.author_with_book, self.book, self.attribution])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({'ask_initial': True}))
changes = autodetector._detect_changes()
changes = autodetector.arrange_for_graph(changes, graph)
self.assertEqual(changes['otherapp'][0].name, '0001_initial')
self.assertEqual(changes['otherapp'][0].dependencies, [])
self.assertEqual(changes['otherapp'][1].name, '0002_initial')
self.assertCountEqual(
changes['otherapp'][1].dependencies,
[('testapp', '0001_initial'), ('otherapp', '0001_initial')],
)
self.assertEqual(changes['testapp'][0].name, '0001_initial')
self.assertEqual(changes['testapp'][0].dependencies, [('otherapp', '0001_initial')])
def test_trim_apps(self):
"""
Trim does not remove dependencies but does remove unwanted apps.
"""
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable, self.third_thing])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({"ask_initial": True}))
changes = autodetector._detect_changes()
# Run through arrange_for_graph
graph = MigrationGraph()
changes = autodetector.arrange_for_graph(changes, graph)
changes["testapp"][0].dependencies.append(("otherapp", "0001_initial"))
changes = autodetector._trim_to_apps(changes, {"testapp"})
# Make sure there's the right set of migrations
self.assertEqual(changes["testapp"][0].name, "0001_initial")
self.assertEqual(changes["otherapp"][0].name, "0001_initial")
self.assertNotIn("thirdapp", changes)
def test_custom_migration_name(self):
"""Tests custom naming of migrations for graph matching."""
# Make a fake graph
graph = MigrationGraph()
graph.add_node(("testapp", "0001_initial"), None)
graph.add_node(("testapp", "0002_foobar"), None)
graph.add_node(("otherapp", "0001_initial"), None)
graph.add_dependency("testapp.0002_foobar", ("testapp", "0002_foobar"), ("testapp", "0001_initial"))
# Use project state to make a new migration change set
before = self.make_project_state([])
after = self.make_project_state([self.author_empty, self.other_pony, self.other_stable])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Run through arrange_for_graph
migration_name = 'custom_name'
changes = autodetector.arrange_for_graph(changes, graph, migration_name)
# Make sure there's a new name, deps match, etc.
self.assertEqual(changes["testapp"][0].name, "0003_%s" % migration_name)
self.assertEqual(changes["testapp"][0].dependencies, [("testapp", "0002_foobar")])
self.assertEqual(changes["otherapp"][0].name, "0002_%s" % migration_name)
self.assertEqual(changes["otherapp"][0].dependencies, [("otherapp", "0001_initial")])
def test_new_model(self):
"""Tests autodetection of new models."""
changes = self.get_changes([], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="Pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
def test_old_model(self):
"""Tests deletion of old models."""
changes = self.get_changes([self.author_empty], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
def test_add_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_empty], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_not_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_date_fields_with_auto_now_add_not_asking_for_null_addition(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_auto_now_add_addition')
def test_add_date_fields_with_auto_now_add_asking_for_default(self, mocked_ask_method):
changes = self.get_changes([self.author_empty], [self.author_dates_of_birth_auto_now_add])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField", "AddField"])
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 1, auto_now_add=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 2, auto_now_add=True)
self.assertEqual(mocked_ask_method.call_count, 3)
def test_remove_field(self):
"""Tests autodetection of removed fields."""
changes = self.get_changes([self.author_name], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name")
def test_alter_field(self):
"""Tests autodetection of new fields."""
changes = self.get_changes([self.author_name], [self.author_name_longer])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
def test_supports_functools_partial(self):
def _content_file_name(instance, filename, key, **kwargs):
return '{}/{}'.format(instance, filename)
def content_file_name(key, **kwargs):
return functools.partial(_content_file_name, key, **kwargs)
# An unchanged partial reference.
before = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
after = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file'))),
])]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'testapp', 0)
# A changed partial reference.
args_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('other-file'))),
])]
changes = self.get_changes(before, args_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
# Can't use assertOperationFieldAttributes because we need the
# deconstructed version, i.e., the exploded func/args/keywords rather
# than the partial: we don't care if it's not the same instance of the
# partial, only if it's the same source function, args, and keywords.
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('other-file',), {}),
(value.func, value.args, value.keywords)
)
kwargs_changed = [ModelState("testapp", "Author", [
("id", models.AutoField(primary_key=True)),
("file", models.FileField(max_length=200, upload_to=content_file_name('file', spam='eggs'))),
])]
changes = self.get_changes(before, kwargs_changed)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AlterField'])
value = changes['testapp'][0].operations[0].field.upload_to
self.assertEqual(
(_content_file_name, ('file',), {'spam': 'eggs'}),
(value.func, value.args, value.keywords)
)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_alter_field_to_not_null_with_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default='Ada Lovelace')
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value=models.NOT_PROVIDED,
)
def test_alter_field_to_not_null_without_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=True)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default=models.NOT_PROVIDED)
@mock.patch(
'django.db.migrations.questioner.MigrationQuestioner.ask_not_null_alteration',
return_value='Some Name',
)
def test_alter_field_to_not_null_oneoff_default(self, mocked_ask_method):
"""
#23609 - Tests autodetection of nullable to non-nullable alterations.
"""
changes = self.get_changes([self.author_name_null], [self.author_name])
self.assertEqual(mocked_ask_method.call_count, 1)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="name", preserve_default=False)
self.assertOperationFieldAttributes(changes, "testapp", 0, 0, default="Some Name")
def test_rename_field(self):
"""Tests autodetection of renamed fields."""
changes = self.get_changes(
[self.author_name], [self.author_name_renamed], MigrationQuestioner({"ask_rename": True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="name", new_name="names")
def test_rename_field_foreign_key_to_field(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='field')),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(unique=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE, to_field='renamed_field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='field', new_name='renamed_field')
def test_rename_foreign_object_fields(self):
fields = ('first', 'second')
renamed_fields = ('first_renamed', 'second_renamed')
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=fields,
)),
]),
]
# Case 1: to_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
], options={'unique_together': {renamed_fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=fields, to_fields=renamed_fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField', 'AlterUniqueTogether'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='second', new_name='second_renamed',
)
# Case 2: from_fields renames.
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('first', models.IntegerField()),
('second', models.IntegerField()),
], options={'unique_together': {fields}}),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('first_renamed', models.IntegerField()),
('second_renamed', models.IntegerField()),
('foo', models.ForeignObject(
'app.Foo', models.CASCADE, from_fields=renamed_fields, to_fields=fields,
)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', old_name='first', new_name='first_renamed',
)
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='second', new_name='second_renamed',
)
def test_rename_referenced_primary_key(self):
before = [
ModelState('app', 'Foo', [
('id', models.CharField(primary_key=True, serialize=False)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('renamed_id', models.CharField(primary_key=True, serialize=False))
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RenameField'])
self.assertOperationAttributes(changes, 'app', 0, 0, old_name='id', new_name='renamed_id')
def test_rename_field_preserved_db_column(self):
"""
RenameField is used if a field is renamed and db_column equal to the
old field's column is added.
"""
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('field', models.IntegerField()),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
('renamed_field', models.IntegerField(db_column='field')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='foo', name='field',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'field', 'django.db.models.IntegerField', [], {'db_column': 'field'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='foo', old_name='field',
new_name='renamed_field',
)
def test_rename_related_field_preserved_db_column(self):
before = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('foo', models.ForeignKey('app.Foo', models.CASCADE)),
]),
]
after = [
ModelState('app', 'Foo', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'Bar', [
('id', models.AutoField(primary_key=True)),
('renamed_foo', models.ForeignKey('app.Foo', models.CASCADE, db_column='foo_id')),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename': True}))
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterField', 'RenameField'])
self.assertOperationAttributes(
changes, 'app', 0, 0, model_name='bar', name='foo',
)
self.assertEqual(changes['app'][0].operations[0].field.deconstruct(), (
'foo',
'django.db.models.ForeignKey',
[],
{'to': 'app.foo', 'on_delete': models.CASCADE, 'db_column': 'foo_id'},
))
self.assertOperationAttributes(
changes, 'app', 0, 1, model_name='bar', old_name='foo',
new_name='renamed_foo',
)
def test_rename_model(self):
"""Tests autodetection of renamed models."""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_author_renamed],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Now that RenameModel handles related fields too, there should be
# no AlterField for the related field.
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_model_case(self):
"""
Model name is case-insensitive. Changing case doesn't lead to any
autodetected operations.
"""
author_renamed = ModelState('testapp', 'author', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes(
[self.author_empty, self.book],
[author_renamed, self.book],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_renamed_referenced_m2m_model_case(self):
publisher_renamed = ModelState('testapp', 'publisher', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=100)),
])
changes = self.get_changes(
[self.publisher, self.author_with_m2m],
[publisher_renamed, self.author_with_m2m],
questioner=MigrationQuestioner({'ask_rename_model': True}),
)
self.assertNumberMigrations(changes, 'testapp', 0)
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_m2m_through_model(self):
"""
Tests autodetection of renamed models that are used in M2M relations as
through models.
"""
changes = self.get_changes(
[self.author_with_m2m_through, self.publisher, self.contract],
[self.author_with_renamed_m2m_through, self.publisher, self.contract_renamed],
MigrationQuestioner({'ask_rename_model': True})
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='Contract', new_name='Deal')
def test_rename_model_with_renamed_rel_field(self):
"""
Tests autodetection of renamed models while simultaneously renaming one
of the fields that relate to the renamed model.
"""
changes = self.get_changes(
[self.author_with_book, self.book],
[self.author_renamed_with_book, self.book_with_field_and_author_renamed],
MigrationQuestioner({"ask_rename": True, "ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name="Author", new_name="Writer")
# Right number/type of migrations for related field rename?
# Alter is already taken care of.
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["RenameField"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, old_name="author", new_name="writer")
def test_rename_model_with_fks_in_different_position(self):
"""
#24537 - The order of fields in a model does not influence
the RenameModel detection.
"""
before = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "EntityB", [
("id", models.AutoField(primary_key=True)),
("some_label", models.CharField(max_length=255)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
]),
]
after = [
ModelState("testapp", "EntityA", [
("id", models.AutoField(primary_key=True)),
]),
ModelState("testapp", "RenamedEntityB", [
("id", models.AutoField(primary_key=True)),
("entity_a", models.ForeignKey("testapp.EntityA", models.CASCADE)),
("some_label", models.CharField(max_length=255)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({"ask_rename_model": True}))
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="EntityB", new_name="RenamedEntityB")
def test_rename_model_reverse_relation_dependencies(self):
"""
The migration to rename a model pointed to by a foreign key in another
app must run after the other app's migration that adds the foreign key
with model's original name. Therefore, the renaming migration has a
dependency on that other migration.
"""
before = [
ModelState('testapp', 'EntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.EntityA', models.CASCADE)),
]),
]
after = [
ModelState('testapp', 'RenamedEntityA', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('otherapp', 'EntityB', [
('id', models.AutoField(primary_key=True)),
('entity_a', models.ForeignKey('testapp.RenamedEntityA', models.CASCADE)),
]),
]
changes = self.get_changes(before, after, MigrationQuestioner({'ask_rename_model': True}))
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertMigrationDependencies(changes, 'testapp', 0, [('otherapp', '__first__')])
self.assertOperationTypes(changes, 'testapp', 0, ['RenameModel'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, old_name='EntityA', new_name='RenamedEntityA')
def test_fk_dependency(self):
"""Having a ForeignKey automatically adds a dependency."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (author),
# thirdapp (edition) depends on otherapp (book)
changes = self.get_changes([], [self.author_name, self.book, self.edition])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("testapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="Edition")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("otherapp", "auto_1")])
def test_proxy_fk_dependency(self):
"""FK dependencies still work on proxy models."""
# Note that testapp (author) has no dependencies,
# otherapp (book) depends on testapp (authorproxy)
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("thirdapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="AuthorProxy")
self.assertMigrationDependencies(changes, 'thirdapp', 0, [("testapp", "auto_1")])
def test_same_app_no_fk_dependency(self):
"""
A migration with a FK between two models of the same app
does not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_circular_fk_dependency(self):
"""
Having a circular ForeignKey dependency automatically
resolves the situation into 2 migrations on one side and 1 on the other.
"""
changes = self.get_changes([], [self.author_with_book, self.book, self.publisher_with_book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "auto_1")])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 2)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'otherapp', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'otherapp', 0, [])
self.assertMigrationDependencies(changes, 'otherapp', 1, [("otherapp", "auto_1"), ("testapp", "auto_1")])
# both split migrations should be `initial`
self.assertTrue(changes['otherapp'][0].initial)
self.assertTrue(changes['otherapp'][1].initial)
def test_same_app_circular_fk_dependency(self):
"""
A migration with a FK between two models of the same app does
not have a dependency to itself.
"""
changes = self.get_changes([], [self.author_with_publisher, self.publisher_with_author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "AddField"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Publisher")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="publisher")
self.assertMigrationDependencies(changes, 'testapp', 0, [])
def test_same_app_circular_fk_dependency_with_unique_together_and_indexes(self):
"""
#22275 - A migration with circular FK dependency does not try
to create unique together constraint and indexes before creating all
required fields first.
"""
changes = self.get_changes([], [self.knight, self.rabbit])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'eggs', 1)
self.assertOperationTypes(
changes, 'eggs', 0, ["CreateModel", "CreateModel", "AddIndex", "AlterUniqueTogether"]
)
self.assertNotIn("unique_together", changes['eggs'][0].operations[0].options)
self.assertNotIn("unique_together", changes['eggs'][0].operations[1].options)
self.assertMigrationDependencies(changes, 'eggs', 0, [])
def test_alter_db_table_add(self):
"""Tests detection for adding db_table in model's options."""
changes = self.get_changes([self.author_empty], [self.author_with_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_one")
def test_alter_db_table_change(self):
"""Tests detection for changing db_table in model's options'."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_new_db_table_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table="author_two")
def test_alter_db_table_remove(self):
"""Tests detection for removing db_table in model's options."""
changes = self.get_changes([self.author_with_db_table_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", table=None)
def test_alter_db_table_no_changes(self):
"""
Alter_db_table doesn't generate a migration if no changes have been made.
"""
changes = self.get_changes([self.author_with_db_table_options], [self.author_with_db_table_options])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_keep_db_table_with_model_change(self):
"""
Tests when model changes but db_table stays as-is, autodetector must not
create more than one operation.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
def test_alter_db_table_with_model_change(self):
"""
Tests when model and db_table changes, autodetector must create two
operations.
"""
changes = self.get_changes(
[self.author_with_db_table_options],
[self.author_renamed_with_new_db_table_options],
MigrationQuestioner({"ask_rename_model": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RenameModel", "AlterModelTable"])
self.assertOperationAttributes(changes, "testapp", 0, 0, old_name="Author", new_name="NewAuthor")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="newauthor", table="author_three")
def test_identical_regex_doesnt_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[-a-zA-Z0-9_]+\\Z'),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 0)
def test_different_regex_does_alter(self):
from_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[
RegexValidator(
re.compile('^[a-z]+\\Z', 32),
'Enter a valid “slug” consisting of letters, numbers, underscores or hyphens.',
'invalid'
)
]))]
)
to_state = ModelState(
"testapp", "model", [("id", models.AutoField(primary_key=True, validators=[validate_slug]))]
)
changes = self.get_changes([from_state], [to_state])
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterField"])
def test_empty_foo_together(self):
"""
#23452 - Empty unique/index_together shouldn't generate a migration.
"""
# Explicitly testing for not specified, since this is the case after
# a CreateModel operation w/o any definition on the original model
model_state_not_specified = ModelState("a", "model", [("id", models.AutoField(primary_key=True))])
# Explicitly testing for None, since this was the issue in #23452 after
# an AlterFooTogether operation with e.g. () as value
model_state_none = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": None,
"unique_together": None,
})
# Explicitly testing for the empty set, since we now always have sets.
# During removal (('col1', 'col2'),) --> () this becomes set([])
model_state_empty = ModelState("a", "model", [
("id", models.AutoField(primary_key=True))
], {
"index_together": set(),
"unique_together": set(),
})
def test(from_state, to_state, msg):
changes = self.get_changes([from_state], [to_state])
if changes:
ops = ', '.join(o.__class__.__name__ for o in changes['a'][0].operations)
self.fail('Created operation(s) %s from %s' % (ops, msg))
tests = (
(model_state_not_specified, model_state_not_specified, '"not specified" to "not specified"'),
(model_state_not_specified, model_state_none, '"not specified" to "None"'),
(model_state_not_specified, model_state_empty, '"not specified" to "empty"'),
(model_state_none, model_state_not_specified, '"None" to "not specified"'),
(model_state_none, model_state_none, '"None" to "None"'),
(model_state_none, model_state_empty, '"None" to "empty"'),
(model_state_empty, model_state_not_specified, '"empty" to "not specified"'),
(model_state_empty, model_state_none, '"empty" to "None"'),
(model_state_empty, model_state_empty, '"empty" to "empty"'),
)
for t in tests:
test(*t)
def test_create_model_with_indexes(self):
"""Test creation of new model with indexes already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'indexes': [models.Index(fields=['name'], name='create_model_with_indexes_idx')]})
changes = self.get_changes([], [author])
added_index = models.Index(fields=['name'], name='create_model_with_indexes_idx')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', index=added_index)
def test_add_indexes(self):
"""Test change detection of new indexes."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_indexes])
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AddIndex'])
added_index = models.Index(fields=['author', 'title'], name='book_title_author_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', index=added_index)
def test_remove_indexes(self):
"""Test change detection of removed indexes."""
changes = self.get_changes([self.author_empty, self.book_indexes], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
def test_order_fields_indexes(self):
"""Test change detection of reordering of fields in indexes."""
changes = self.get_changes(
[self.author_empty, self.book_indexes], [self.author_empty, self.book_unordered_indexes]
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveIndex', 'AddIndex'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, model_name='book', name='book_title_author_idx')
added_index = models.Index(fields=['title', 'author'], name='book_author_title_idx')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='book', index=added_index)
def test_create_model_with_check_constraint(self):
"""Test creation of new model with constraints already defined."""
author = ModelState('otherapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
], {'constraints': [models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')]})
changes = self.get_changes([], [author])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
# Right actions order?
self.assertOperationTypes(changes, 'otherapp', 0, ['CreateModel', 'AddConstraint'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, model_name='author', constraint=added_constraint)
def test_add_constraints(self):
"""Test change detection of new constraints."""
changes = self.get_changes([self.author_name], [self.author_name_check_constraint])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['AddConstraint'])
added_constraint = models.CheckConstraint(check=models.Q(name__contains='Bob'), name='name_contains_bob')
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', constraint=added_constraint)
def test_remove_constraints(self):
"""Test change detection of removed constraints."""
changes = self.get_changes([self.author_name_check_constraint], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['RemoveConstraint'])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name='author', name='name_contains_bob')
def test_add_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together={("author", "title")})
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together={("author", "title")})
def test_remove_foo_together(self):
"""Tests index/unique_together detection."""
changes = self.get_changes([self.author_empty, self.book_foo_together], [self.author_empty, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
def test_foo_together_remove_fk(self):
"""Tests unique_together and field removal detection & ordering"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_with_no_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, [
"AlterUniqueTogether", "AlterIndexTogether", "RemoveField"
])
self.assertOperationAttributes(changes, "otherapp", 0, 0, name="book", unique_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", index_together=set())
self.assertOperationAttributes(changes, "otherapp", 0, 2, model_name="book", name="author")
def test_foo_together_no_changes(self):
"""
index/unique_together doesn't generate a migration if no
changes have been made.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together]
)
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_foo_together_ordering(self):
"""
index/unique_together also triggers on ordering changes.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together], [self.author_empty, self.book_foo_together_2]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('title', 'author')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('title', 'author')},
)
def test_add_field_and_foo_together(self):
"""
Added fields will be created before using them in index/unique_together.
"""
changes = self.get_changes([self.author_empty, self.book], [self.author_empty, self.book_foo_together_3])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, "otherapp", 0, ["AddField", "AlterUniqueTogether", "AlterIndexTogether"])
self.assertOperationAttributes(changes, "otherapp", 0, 1, name="book", unique_together={("title", "newfield")})
self.assertOperationAttributes(changes, "otherapp", 0, 2, name="book", index_together={("title", "newfield")})
def test_create_model_and_unique_together(self):
author = ModelState("otherapp", "Author", [
("id", models.AutoField(primary_key=True)),
("name", models.CharField(max_length=200)),
])
book_with_author = ModelState("otherapp", "Book", [
("id", models.AutoField(primary_key=True)),
("author", models.ForeignKey("otherapp.Author", models.CASCADE)),
("title", models.CharField(max_length=200)),
], {
"index_together": {("title", "author")},
"unique_together": {("title", "author")},
})
changes = self.get_changes([self.book_with_no_author], [author, book_with_author])
# Right number of migrations?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 4)
# Right actions order?
self.assertOperationTypes(
changes, 'otherapp', 0,
['CreateModel', 'AddField', 'AlterUniqueTogether', 'AlterIndexTogether']
)
def test_remove_field_and_foo_together(self):
"""
Removed fields will be removed after updating index/unique_together.
"""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3], [self.author_empty, self.book_foo_together]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
'RemoveField',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 0, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book',
unique_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
index_together={('author', 'title')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, model_name='book', name='newfield',
)
def test_alter_field_and_foo_together(self):
"""Fields are altered after deleting some index/unique_together."""
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField(db_index=True)),
], {
'unique_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200, unique=True)),
('age', models.IntegerField()),
], {
'index_together': {('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterField',
'AlterField',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, model_name='author', name='age',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 2, model_name='author', name='name',
)
self.assertOperationAttributes(
changes, 'testapp', 0, 3, name='author', index_together={('age',)},
)
def test_partly_alter_foo_together(self):
initial_author = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('name',), ('age',)},
'index_together': {('name',)},
})
author_reversed_constraints = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('age', models.IntegerField()),
], {
'unique_together': {('age',)},
'index_together': {('name',), ('age',)},
})
changes = self.get_changes([initial_author], [author_reversed_constraints])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='author', unique_together={('age',)},
)
self.assertOperationAttributes(
changes, 'testapp', 0, 1, name='author',
index_together={('name',), ('age',)},
)
def test_rename_field_and_foo_together(self):
"""Fields are renamed before updating index/unique_together."""
changes = self.get_changes(
[self.author_empty, self.book_foo_together_3],
[self.author_empty, self.book_foo_together_4],
MigrationQuestioner({"ask_rename": True}),
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, [
'RenameField',
'AlterUniqueTogether',
'AlterIndexTogether',
'AlterUniqueTogether',
'AlterIndexTogether',
])
self.assertOperationAttributes(
changes, 'otherapp', 0, 1, name='book', unique_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 2, name='book', index_together=set(),
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 3, name='book',
unique_together={('title', 'newfield2')},
)
self.assertOperationAttributes(
changes, 'otherapp', 0, 4, name='book',
index_together={('title', 'newfield2')},
)
def test_proxy(self):
"""The autodetector correctly deals with proxy models."""
# First, we test adding a proxy model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel"])
self.assertOperationAttributes(
changes, "testapp", 0, 0, name="AuthorProxy", options={"proxy": True, "indexes": [], "constraints": []}
)
# Now, we test turning a proxy model into a non-proxy model
# It should delete the proxy then make the real one
changes = self.get_changes(
[self.author_empty, self.author_proxy], [self.author_empty, self.author_proxy_notproxy]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["DeleteModel", "CreateModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="AuthorProxy")
self.assertOperationAttributes(changes, "testapp", 0, 1, name="AuthorProxy", options={})
def test_proxy_non_model_parent(self):
class Mixin:
pass
author_proxy_non_model_parent = ModelState(
'testapp',
'AuthorProxy',
[],
{'proxy': True},
(Mixin, 'testapp.author'),
)
changes = self.get_changes(
[self.author_empty],
[self.author_empty, author_proxy_non_model_parent],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name='AuthorProxy',
options={'proxy': True, 'indexes': [], 'constraints': []},
bases=(Mixin, 'testapp.author'),
)
def test_proxy_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on proxy
models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_empty, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_custom_pk, self.author_proxy_third, self.book_proxy_fk])
# The model the FK is pointing from and to.
self.assertEqual(
changes['otherapp'][0].operations[0].fields[2][1].remote_field.model,
'thirdapp.AuthorProxy',
)
def test_proxy_to_mti_with_fk_to_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third, self.book_proxy_fk],
)
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
# Change AuthorProxy to use MTI.
from_state = to_state.clone()
to_state = self.make_project_state(
[self.author_empty, self.author_proxy_third_notproxy, self.book_proxy_fk],
)
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AuthorProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on thirdapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('thirdapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('thirdapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'thirdapp.AuthorProxy')
def test_proxy_to_mti_with_fk_to_proxy_proxy(self):
# First, test the pk table and field name.
to_state = self.make_project_state([
self.author_empty,
self.author_proxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes([], to_state)
fk_field = changes['otherapp'][0].operations[0].fields[1][1]
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'author'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
# Change AuthorProxy to use MTI. FK still points to AAuthorProxyProxy,
# a proxy of AuthorProxy.
from_state = to_state.clone()
to_state = self.make_project_state([
self.author_empty,
self.author_proxy_notproxy,
self.author_proxy_proxy,
self.book_proxy_proxy_fk,
])
changes = self.get_changes(from_state, to_state)
# Right number/type of migrations for the AuthorProxy model?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel', 'CreateModel'])
# Right number/type of migrations for the Book model with a FK to
# AAuthorProxyProxy?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
# otherapp should depend on testapp.
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', 'auto_1')])
# Now, test the pk table and field name.
fk_field = changes['otherapp'][0].operations[0].field
self.assertEqual(
to_state.get_concrete_model_key(fk_field.remote_field.model),
('testapp', 'authorproxy'),
)
self.assertEqual(fk_field.remote_field.model, 'testapp.AAuthorProxyProxy')
def test_unmanaged_create(self):
"""The autodetector correctly deals with managed models."""
# First, we test adding an unmanaged model
changes = self.get_changes([self.author_empty], [self.author_empty, self.author_unmanaged])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="AuthorUnmanaged", options={"managed": False})
def test_unmanaged_delete(self):
changes = self.get_changes([self.author_empty, self.author_unmanaged], [self.author_empty])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['DeleteModel'])
def test_unmanaged_to_managed(self):
# Now, we test turning an unmanaged model into a managed model
changes = self.get_changes(
[self.author_empty, self.author_unmanaged], [self.author_empty, self.author_unmanaged_managed]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="authorunmanaged", options={})
def test_managed_to_unmanaged(self):
# Now, we turn managed to unmanaged.
changes = self.get_changes(
[self.author_empty, self.author_unmanaged_managed], [self.author_empty, self.author_unmanaged]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorunmanaged", options={"managed": False})
def test_unmanaged_custom_pk(self):
"""
#23415 - The autodetector must correctly deal with custom FK on
unmanaged models.
"""
# First, we test the default pk field name
changes = self.get_changes([], [self.author_unmanaged_default_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
# Now, we test the custom pk field name
changes = self.get_changes([], [self.author_unmanaged_custom_pk, self.book])
# The model the FK on the book model points to.
fk_field = changes['otherapp'][0].operations[0].fields[2][1]
self.assertEqual(fk_field.remote_field.model, 'testapp.Author')
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([self.custom_user], [self.custom_user, self.author_with_custom_user])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertMigrationDependencies(changes, 'testapp', 0, [("__setting__", "AUTH_USER_MODEL")])
def test_swappable_changed(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
before = self.make_project_state([self.custom_user, self.author_with_user])
with override_settings(AUTH_USER_MODEL="thirdapp.CustomUser"):
after = self.make_project_state([self.custom_user, self.author_with_custom_user])
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name='user')
fk_field = changes['testapp'][0].operations[0].field
self.assertEqual(fk_field.remote_field.model, 'thirdapp.CustomUser')
def test_add_field_with_default(self):
"""#22030 - Adding a field with a default should work."""
changes = self.get_changes([self.author_empty], [self.author_name_default])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="name")
def test_custom_deconstructible(self):
"""
Two instances which deconstruct to the same value aren't considered a
change.
"""
changes = self.get_changes([self.author_name_deconstructible_1], [self.author_name_deconstructible_2])
# Right number of migrations?
self.assertEqual(len(changes), 0)
def test_deconstruct_field_kwarg(self):
"""Field instances are handled correctly by nested deconstruction."""
changes = self.get_changes([self.author_name_deconstructible_3], [self.author_name_deconstructible_4])
self.assertEqual(changes, {})
def test_deconstructible_list(self):
"""Nested deconstruction descends into lists."""
# When lists contain items that deconstruct to identical values, those lists
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed lists should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_list_1], [self.author_name_deconstructible_list_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_tuple(self):
"""Nested deconstruction descends into tuples."""
# When tuples contain items that deconstruct to identical values, those tuples
# should be considered equal for the purpose of detecting state changes
# (even if the original items are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed tuples should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_tuple_1], [self.author_name_deconstructible_tuple_3]
)
self.assertEqual(len(changes), 1)
def test_deconstructible_dict(self):
"""Nested deconstruction descends into dict values."""
# When dicts contain items whose values deconstruct to identical values,
# those dicts should be considered equal for the purpose of detecting
# state changes (even if the original values are unequal).
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_2]
)
self.assertEqual(changes, {})
# Legitimate differences within the deconstructed dicts should be reported
# as a change
changes = self.get_changes(
[self.author_name_deconstructible_dict_1], [self.author_name_deconstructible_dict_3]
)
self.assertEqual(len(changes), 1)
def test_nested_deconstructible_objects(self):
"""
Nested deconstruction is applied recursively to the args/kwargs of
deconstructed objects.
"""
# If the items within a deconstructed object's args/kwargs have the same
# deconstructed values - whether or not the items themselves are different
# instances - then the object as a whole is regarded as unchanged.
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_2]
)
self.assertEqual(changes, {})
# Differences that exist solely within the args list of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_arg]
)
self.assertEqual(len(changes), 1)
# Additional args should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_arg]
)
self.assertEqual(len(changes), 1)
# Differences that exist solely within the kwargs dict of a deconstructed object
# should be reported as changes
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_changed_kwarg]
)
self.assertEqual(len(changes), 1)
# Additional kwargs should also be reported as a change
changes = self.get_changes(
[self.author_name_nested_deconstructible_1], [self.author_name_nested_deconstructible_extra_kwarg]
)
self.assertEqual(len(changes), 1)
def test_deconstruct_type(self):
"""
#22951 -- Uninstantiated classes with deconstruct are correctly returned
by deep_deconstruct during serialization.
"""
author = ModelState(
"testapp",
"Author",
[
("id", models.AutoField(primary_key=True)),
("name", models.CharField(
max_length=200,
# IntegerField intentionally not instantiated.
default=models.IntegerField,
))
],
)
changes = self.get_changes([], [author])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
def test_replace_string_with_foreignkey(self):
"""
#22300 - Adding an FK in the same "spot" as a deleted CharField should
work.
"""
changes = self.get_changes([self.author_with_publisher_string], [self.author_with_publisher, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publisher_name")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publisher")
def test_foreign_key_removed_before_target_model(self):
"""
Removing an FK and the model it targets in the same change must remove
the FK field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.author_with_publisher, self.publisher], [self.author_name]
) # removes both the model and FK
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["RemoveField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publisher")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Publisher")
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_many_to_many(self, mocked_ask_method):
"""#22435 - Adding a ManyToManyField should not prompt for a default."""
changes = self.get_changes([self.author_empty, self.publisher], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_alter_many_to_many(self):
changes = self.get_changes(
[self.author_with_m2m, self.publisher], [self.author_with_m2m_blank, self.publisher]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers")
def test_create_with_through_model(self):
"""
Adding a m2m with a through model and the models that use it should be
ordered correctly.
"""
changes = self.get_changes([], [self.author_with_m2m_through, self.publisher, self.contract])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
'CreateModel', 'CreateModel', 'CreateModel', 'AddField',
])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Contract')
self.assertOperationAttributes(changes, 'testapp', 0, 3, model_name='author', name='publishers')
def test_many_to_many_removed_before_through_model(self):
"""
Removing a ManyToManyField and the "through" model in the same change
must remove the field before the model to maintain consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.book_with_no_author, self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
def test_many_to_many_removed_before_through_model_2(self):
"""
Removing a model that contains a ManyToManyField and the "through" model
in the same change must remove the field before the model to maintain
consistency.
"""
changes = self.get_changes(
[self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution],
[self.author_name],
)
# Remove both the through model and ManyToMany
# Right number/type of migrations?
self.assertNumberMigrations(changes, "otherapp", 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['RemoveField', 'DeleteModel', 'DeleteModel'])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name='authors', model_name='book')
self.assertOperationAttributes(changes, 'otherapp', 0, 1, name='Attribution')
self.assertOperationAttributes(changes, 'otherapp', 0, 2, name='Book')
def test_m2m_w_through_multistep_remove(self):
"""
A model with a m2m field that specifies a "through" model cannot be
removed in the same migration as that through model as the schema will
pass through an inconsistent state. The autodetector should produce two
migrations to avoid this issue.
"""
changes = self.get_changes([self.author_with_m2m_through, self.publisher, self.contract], [self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, [
"RemoveField", "RemoveField", "DeleteModel", "DeleteModel"
])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="publisher", model_name='contract')
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 3, name="Contract")
def test_concrete_field_changed_to_many_to_many(self):
"""
#23938 - Changing a concrete field into a ManyToManyField
first removes the concrete field and then adds the m2m field.
"""
changes = self.get_changes([self.author_with_former_m2m], [self.author_with_m2m, self.publisher])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["CreateModel", "RemoveField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name='Publisher')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="publishers", model_name='author')
def test_many_to_many_changed_to_concrete_field(self):
"""
#23938 - Changing a ManyToManyField into a concrete field
first removes the m2m field and then adds the concrete field.
"""
changes = self.get_changes([self.author_with_m2m, self.publisher], [self.author_with_former_m2m])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "AddField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="publishers", model_name='author')
self.assertOperationAttributes(changes, 'testapp', 0, 2, name='Publisher')
self.assertOperationFieldAttributes(changes, 'testapp', 0, 1, max_length=100)
def test_non_circular_foreignkey_dependency_removal(self):
"""
If two models with a ForeignKey from one to the other are removed at the
same time, the autodetector should remove them in the correct order.
"""
changes = self.get_changes([self.author_with_publisher, self.publisher_with_author], [])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["RemoveField", "DeleteModel", "DeleteModel"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", model_name='publisher')
self.assertOperationAttributes(changes, "testapp", 0, 1, name="Author")
self.assertOperationAttributes(changes, "testapp", 0, 2, name="Publisher")
def test_alter_model_options(self):
"""Changing a model's options should make a change."""
changes = self.get_changes([self.author_empty], [self.author_with_options])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, options={
"permissions": [('can_hire', 'Can hire')],
"verbose_name": "Authi",
})
# Changing them back to empty should also make a change
changes = self.get_changes([self.author_with_options], [self.author_empty])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="author", options={})
def test_alter_model_options_proxy(self):
"""Changing a proxy model's options should also make a change."""
changes = self.get_changes(
[self.author_proxy, self.author_empty], [self.author_proxy_options, self.author_empty]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, "testapp", 1)
self.assertOperationTypes(changes, "testapp", 0, ["AlterModelOptions"])
self.assertOperationAttributes(changes, "testapp", 0, 0, name="authorproxy", options={
"verbose_name": "Super Author"
})
def test_set_alter_order_with_respect_to(self):
"""Setting order_with_respect_to adds a field."""
changes = self.get_changes([self.book, self.author_with_book], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to="book")
def test_add_alter_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the FK too does
things in the right order.
"""
changes = self.get_changes([self.author_name], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AlterOrderWithRespectTo"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, model_name="author", name="book")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author", order_with_respect_to="book")
def test_remove_alter_order_with_respect_to(self):
"""
Removing order_with_respect_to when removing the FK too does
things in the right order.
"""
changes = self.get_changes([self.book, self.author_with_book_order_wrt], [self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AlterOrderWithRespectTo", "RemoveField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="author", order_with_respect_to=None)
self.assertOperationAttributes(changes, 'testapp', 0, 1, model_name="author", name="book")
def test_add_model_order_with_respect_to(self):
"""
Setting order_with_respect_to when adding the whole model
does things in the right order.
"""
changes = self.get_changes([], [self.book, self.author_with_book_order_wrt])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel"])
self.assertOperationAttributes(
changes, 'testapp', 0, 0, name="Author", options={'order_with_respect_to': 'book'}
)
self.assertNotIn("_order", [name for name, field in changes['testapp'][0].operations[0].fields])
def test_add_model_order_with_respect_to_index_foo_together(self):
changes = self.get_changes([], [
self.book,
ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
}),
])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ['CreateModel'])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={
'order_with_respect_to': 'book',
'index_together': {('name', '_order')},
'unique_together': {('id', '_order')},
},
)
def test_add_model_order_with_respect_to_index_constraint(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes([], [self.book, after])
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'CreateModel', operation,
])
self.assertOperationAttributes(
changes,
'testapp',
0,
0,
name='Author',
options={'order_with_respect_to': 'book'},
)
def test_set_alter_order_with_respect_to_index_constraint_foo_together(self):
tests = [
(
'AddIndex',
{'indexes': [
models.Index(fields=['_order'], name='book_order_idx'),
]},
),
(
'AddConstraint',
{'constraints': [
models.CheckConstraint(
check=models.Q(_order__gt=1),
name='book_order_gt_1',
),
]},
),
('AlterIndexTogether', {'index_together': {('name', '_order')}}),
('AlterUniqueTogether', {'unique_together': {('id', '_order')}}),
]
for operation, extra_option in tests:
with self.subTest(operation=operation):
after = ModelState('testapp', 'Author', [
('id', models.AutoField(primary_key=True)),
('name', models.CharField(max_length=200)),
('book', models.ForeignKey('otherapp.Book', models.CASCADE)),
], options={
'order_with_respect_to': 'book',
**extra_option,
})
changes = self.get_changes(
[self.book, self.author_with_book],
[self.book, after],
)
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, [
'AlterOrderWithRespectTo', operation,
])
def test_alter_model_managers(self):
"""
Changing the model managers adds a new operation.
"""
changes = self.get_changes([self.other_pony], [self.other_pony_food])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["AlterModelManagers"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="pony")
self.assertEqual([name for name, mgr in changes['otherapp'][0].operations[0].managers],
['food_qs', 'food_mgr', 'food_mgr_kwargs'])
self.assertEqual(changes['otherapp'][0].operations[0].managers[1][1].args, ('a', 'b', 1, 2))
self.assertEqual(changes['otherapp'][0].operations[0].managers[2][1].args, ('x', 'y', 3, 4))
def test_swappable_first_inheritance(self):
"""Swappable models get their CreateModel first."""
changes = self.get_changes([], [self.custom_user, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_default_related_name_option(self):
model_state = ModelState('app', 'model', [
('id', models.AutoField(primary_key=True)),
], options={'default_related_name': 'related_name'})
changes = self.get_changes([], [model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['CreateModel'])
self.assertOperationAttributes(
changes, 'app', 0, 0, name='model',
options={'default_related_name': 'related_name'},
)
altered_model_state = ModelState('app', 'Model', [
('id', models.AutoField(primary_key=True)),
])
changes = self.get_changes([model_state], [altered_model_state])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['AlterModelOptions'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='model', options={})
@override_settings(AUTH_USER_MODEL="thirdapp.CustomUser")
def test_swappable_first_setting(self):
"""Swappable models get their CreateModel first."""
with isolate_lru_cache(apps.get_swappable_settings_name):
changes = self.get_changes([], [self.custom_user_no_inherit, self.aardvark])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'thirdapp', 1)
self.assertOperationTypes(changes, 'thirdapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'thirdapp', 0, 0, name="CustomUser")
self.assertOperationAttributes(changes, 'thirdapp', 0, 1, name="Aardvark")
def test_bases_first(self):
"""Bases of other models come first."""
changes = self.get_changes([], [self.aardvark_based_on_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_bases_first_mixed_case_app_label(self):
app_label = 'MiXedCaseApp'
changes = self.get_changes([], [
ModelState(app_label, 'owner', [
('id', models.AutoField(primary_key=True)),
]),
ModelState(app_label, 'place', [
('id', models.AutoField(primary_key=True)),
('owner', models.ForeignKey('MiXedCaseApp.owner', models.CASCADE)),
]),
ModelState(app_label, 'restaurant', [], bases=('MiXedCaseApp.place',)),
])
self.assertNumberMigrations(changes, app_label, 1)
self.assertOperationTypes(changes, app_label, 0, [
'CreateModel', 'CreateModel', 'CreateModel',
])
self.assertOperationAttributes(changes, app_label, 0, 0, name='owner')
self.assertOperationAttributes(changes, app_label, 0, 1, name='place')
self.assertOperationAttributes(changes, app_label, 0, 2, name='restaurant')
def test_multiple_bases(self):
"""#23956 - Inheriting models doesn't move *_ptr fields into AddField operations."""
A = ModelState("app", "A", [("a_id", models.AutoField(primary_key=True))])
B = ModelState("app", "B", [("b_id", models.AutoField(primary_key=True))])
C = ModelState("app", "C", [], bases=("app.A", "app.B"))
D = ModelState("app", "D", [], bases=("app.A", "app.B"))
E = ModelState("app", "E", [], bases=("app.A", "app.B"))
changes = self.get_changes([], [A, B, C, D, E])
# Right number/type of migrations?
self.assertNumberMigrations(changes, "app", 1)
self.assertOperationTypes(changes, "app", 0, [
"CreateModel", "CreateModel", "CreateModel", "CreateModel", "CreateModel"
])
self.assertOperationAttributes(changes, "app", 0, 0, name="A")
self.assertOperationAttributes(changes, "app", 0, 1, name="B")
self.assertOperationAttributes(changes, "app", 0, 2, name="C")
self.assertOperationAttributes(changes, "app", 0, 3, name="D")
self.assertOperationAttributes(changes, "app", 0, 4, name="E")
def test_proxy_bases_first(self):
"""Bases of proxies come first."""
changes = self.get_changes([], [self.author_empty, self.author_proxy, self.author_proxy_proxy])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="AuthorProxy")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="AAuthorProxyProxy")
def test_pk_fk_included(self):
"""
A relation used as the primary key is kept as part of CreateModel.
"""
changes = self.get_changes([], [self.aardvark_pk_fk_author, self.author_name])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "CreateModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Author")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="Aardvark")
def test_first_dependency(self):
"""
A dependency to an app with no migrations uses __first__.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "__first__")])
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_last_dependency(self):
"""
A dependency to an app with existing migrations uses the
last migration of that app.
"""
# Load graph
loader = MigrationLoader(connection)
before = self.make_project_state([])
after = self.make_project_state([self.book_migrations_fk])
after.real_apps = {'migrations'}
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes(graph=loader.graph)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ["CreateModel"])
self.assertOperationAttributes(changes, 'otherapp', 0, 0, name="Book")
self.assertMigrationDependencies(changes, 'otherapp', 0, [("migrations", "0002_second")])
def test_alter_fk_before_model_deletion(self):
"""
ForeignKeys are altered _before_ the model they used to
refer to are deleted.
"""
changes = self.get_changes(
[self.author_name, self.publisher_with_author],
[self.aardvark_testapp, self.publisher_with_aardvark_author]
)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["CreateModel", "AlterField", "DeleteModel"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="Aardvark")
self.assertOperationAttributes(changes, 'testapp', 0, 1, name="author")
self.assertOperationAttributes(changes, 'testapp', 0, 2, name="Author")
def test_fk_dependency_other_app(self):
"""
#23100 - ForeignKeys correctly depend on other apps' models.
"""
changes = self.get_changes([self.author_name, self.book], [self.author_with_book, self.book])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0, name="book")
self.assertMigrationDependencies(changes, 'testapp', 0, [("otherapp", "__first__")])
def test_alter_field_to_fk_dependency_other_app(self):
changes = self.get_changes(
[self.author_empty, self.book_with_no_author_fk],
[self.author_empty, self.book],
)
self.assertNumberMigrations(changes, 'otherapp', 1)
self.assertOperationTypes(changes, 'otherapp', 0, ['AlterField'])
self.assertMigrationDependencies(changes, 'otherapp', 0, [('testapp', '__first__')])
def test_circular_dependency_mixed_addcreate(self):
"""
#23315 - The dependency resolver knows to put all CreateModel
before AddField and not become unsolvable.
"""
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("country", models.ForeignKey("b.DeliveryCountry", models.CASCADE)),
])
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
])
apackage = ModelState("b", "APackage", [
("id", models.AutoField(primary_key=True)),
("person", models.ForeignKey("a.Person", models.CASCADE)),
])
country = ModelState("b", "DeliveryCountry", [
("id", models.AutoField(primary_key=True)),
])
changes = self.get_changes([], [address, person, apackage, country])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel", "CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertOperationTypes(changes, 'b', 0, ["CreateModel", "CreateModel"])
@override_settings(AUTH_USER_MODEL="a.Tenant")
def test_circular_dependency_swappable(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
tenant = ModelState("a", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("b.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
address = ModelState("b", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('a', 'auto_1'), ('b', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('__setting__', 'AUTH_USER_MODEL')])
@override_settings(AUTH_USER_MODEL="b.Tenant")
def test_circular_dependency_swappable2(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models but with the swappable not being the first migrated
model.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
address = ModelState("a", "Address", [
("id", models.AutoField(primary_key=True)),
("tenant", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE)),
])
tenant = ModelState("b", "Tenant", [
("id", models.AutoField(primary_key=True)),
("primary_address", models.ForeignKey("a.Address", models.CASCADE))],
bases=(AbstractBaseUser,)
)
changes = self.get_changes([], [address, tenant])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 2)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertOperationTypes(changes, 'a', 1, ["AddField"])
self.assertMigrationDependencies(changes, 'a', 0, [])
self.assertMigrationDependencies(changes, 'a', 1, [('__setting__', 'AUTH_USER_MODEL'), ('a', 'auto_1')])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'b', 1)
self.assertOperationTypes(changes, 'b', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'b', 0, [('a', 'auto_1')])
@override_settings(AUTH_USER_MODEL="a.Person")
def test_circular_dependency_swappable_self(self):
"""
#23322 - The dependency resolver knows to explicitly resolve
swappable models.
"""
with isolate_lru_cache(apps.get_swappable_settings_name):
person = ModelState("a", "Person", [
("id", models.AutoField(primary_key=True)),
("parent1", models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE, related_name='children'))
])
changes = self.get_changes([], [person])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ["CreateModel"])
self.assertMigrationDependencies(changes, 'a', 0, [])
@override_settings(AUTH_USER_MODEL='a.User')
def test_swappable_circular_multi_mti(self):
with isolate_lru_cache(apps.get_swappable_settings_name):
parent = ModelState('a', 'Parent', [
('user', models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE))
])
child = ModelState('a', 'Child', [], bases=('a.Parent',))
user = ModelState('a', 'User', [], bases=(AbstractBaseUser, 'a.Child'))
changes = self.get_changes([], [parent, child, user])
self.assertNumberMigrations(changes, 'a', 1)
self.assertOperationTypes(changes, 'a', 0, ['CreateModel', 'CreateModel', 'CreateModel', 'AddField'])
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition',
side_effect=AssertionError("Should not have prompted for not null addition"))
def test_add_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and blank `CharField` or `TextField`
without default should not prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_blank])
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
@mock.patch('django.db.migrations.questioner.MigrationQuestioner.ask_not_null_addition')
def test_add_non_blank_textfield_and_charfield(self, mocked_ask_method):
"""
#23405 - Adding a NOT NULL and non-blank `CharField` or `TextField`
without default should prompt for a default.
"""
changes = self.get_changes([self.author_empty], [self.author_with_biography_non_blank])
self.assertEqual(mocked_ask_method.call_count, 2)
# Right number/type of migrations?
self.assertNumberMigrations(changes, 'testapp', 1)
self.assertOperationTypes(changes, 'testapp', 0, ["AddField", "AddField"])
self.assertOperationAttributes(changes, 'testapp', 0, 0)
def test_mti_inheritance_model_removal(self):
Animal = ModelState('app', 'Animal', [
("id", models.AutoField(primary_key=True)),
])
Dog = ModelState('app', 'Dog', [], bases=('app.Animal',))
changes = self.get_changes([Animal, Dog], [Animal])
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['DeleteModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='Dog')
def test_add_model_with_field_removed_from_base_model(self):
"""
Removing a base field takes place before adding a new inherited model
that has a field with the same name.
"""
before = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
('title', models.CharField(max_length=200)),
]),
]
after = [
ModelState('app', 'readable', [
('id', models.AutoField(primary_key=True)),
]),
ModelState('app', 'book', [
('title', models.CharField(max_length=200)),
], bases=('app.readable',)),
]
changes = self.get_changes(before, after)
self.assertNumberMigrations(changes, 'app', 1)
self.assertOperationTypes(changes, 'app', 0, ['RemoveField', 'CreateModel'])
self.assertOperationAttributes(changes, 'app', 0, 0, name='title', model_name='readable')
self.assertOperationAttributes(changes, 'app', 0, 1, name='book')
def test_parse_number(self):
tests = [
('no_number', None),
('0001_initial', 1),
('0002_model3', 2),
('0002_auto_20380101_1112', 2),
('0002_squashed_0003', 3),
('0002_model2_squashed_0003_other4', 3),
('0002_squashed_0003_squashed_0004', 4),
('0002_model2_squashed_0003_other4_squashed_0005_other6', 5),
('0002_custom_name_20380101_1112_squashed_0003_model', 3),
('2_squashed_4', 4),
]
for migration_name, expected_number in tests:
with self.subTest(migration_name=migration_name):
self.assertEqual(
MigrationAutodetector.parse_number(migration_name),
expected_number,
)
class MigrationSuggestNameTests(SimpleTestCase):
def test_no_operations(self):
class Migration(migrations.Migration):
operations = []
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_no_operations_initial(self):
class Migration(migrations.Migration):
initial = True
operations = []
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_single_operation(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('Person', fields=[])]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person')
class Migration(migrations.Migration):
operations = [migrations.DeleteModel('Person')]
migration = Migration('0002_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'delete_person')
def test_single_operation_long_name(self):
class Migration(migrations.Migration):
operations = [migrations.CreateModel('A' * 53, fields=[])]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'a' * 53)
def test_two_operations(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.DeleteModel('Animal'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_delete_animal')
def test_two_create_models(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'person_animal')
def test_two_create_models_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.CreateModel('Animal', fields=[]),
]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_many_operations_suffix(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person1', fields=[]),
migrations.CreateModel('Person2', fields=[]),
migrations.CreateModel('Person3', fields=[]),
migrations.DeleteModel('Person4'),
migrations.DeleteModel('Person5'),
]
migration = Migration('some_migration', 'test_app')
self.assertEqual(
migration.suggest_name(),
'person1_person2_person3_delete_person4_and_more',
)
def test_operation_with_no_suggested_name(self):
class Migration(migrations.Migration):
operations = [
migrations.CreateModel('Person', fields=[]),
migrations.RunSQL('SELECT 1 FROM person;'),
]
migration = Migration('some_migration', 'test_app')
self.assertIs(migration.suggest_name().startswith('auto_'), True)
def test_none_name(self):
class Migration(migrations.Migration):
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
def test_none_name_with_initial_true(self):
class Migration(migrations.Migration):
initial = True
operations = [migrations.RunSQL('SELECT 1 FROM person;')]
migration = Migration('0001_initial', 'test_app')
self.assertEqual(migration.suggest_name(), 'initial')
def test_auto(self):
migration = migrations.Migration('0001_initial', 'test_app')
suggest_name = migration.suggest_name()
self.assertIs(suggest_name.startswith('auto_'), True)
|
4d3c71b915ffa948ad79d37abb04a0db6b7434aa24099b438ba8cea577c1ed76 | import logging
import os
import unittest
import warnings
from io import StringIO
from unittest import mock
from django.conf import settings
from django.contrib.staticfiles.finders import get_finder, get_finders
from django.contrib.staticfiles.storage import staticfiles_storage
from django.core.exceptions import ImproperlyConfigured
from django.core.files.storage import default_storage
from django.db import (
IntegrityError, connection, connections, models, router, transaction,
)
from django.forms import EmailField, IntegerField
from django.http import HttpResponse
from django.template.loader import render_to_string
from django.test import (
SimpleTestCase, TestCase, TransactionTestCase, skipIfDBFeature,
skipUnlessDBFeature,
)
from django.test.html import HTMLParseError, parse_html
from django.test.utils import (
CaptureQueriesContext, TestContextDecorator, isolate_apps,
override_settings, setup_test_environment,
)
from django.urls import NoReverseMatch, path, reverse, reverse_lazy
from django.utils.log import DEFAULT_LOGGING
from .models import Car, Person, PossessedCar
from .views import empty_response
class SkippingTestCase(SimpleTestCase):
def _assert_skipping(self, func, expected_exc, msg=None):
try:
if msg is not None:
with self.assertRaisesMessage(expected_exc, msg):
func()
else:
with self.assertRaises(expected_exc):
func()
except unittest.SkipTest:
self.fail('%s should not result in a skipped test.' % func.__name__)
def test_skip_unless_db_feature(self):
"""
Testing the django.test.skipUnlessDBFeature decorator.
"""
# Total hack, but it works, just want an attribute that's always true.
@skipUnlessDBFeature("__class__")
def test_func():
raise ValueError
@skipUnlessDBFeature("notprovided")
def test_func2():
raise ValueError
@skipUnlessDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipUnlessDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
self._assert_skipping(test_func, ValueError)
self._assert_skipping(test_func2, unittest.SkipTest)
self._assert_skipping(test_func3, ValueError)
self._assert_skipping(test_func4, unittest.SkipTest)
class SkipTestCase(SimpleTestCase):
@skipUnlessDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipUnlessDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_unless_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
def test_skip_if_db_feature(self):
"""
Testing the django.test.skipIfDBFeature decorator.
"""
@skipIfDBFeature("__class__")
def test_func():
raise ValueError
@skipIfDBFeature("notprovided")
def test_func2():
raise ValueError
@skipIfDBFeature("__class__", "__class__")
def test_func3():
raise ValueError
@skipIfDBFeature("__class__", "notprovided")
def test_func4():
raise ValueError
@skipIfDBFeature("notprovided", "notprovided")
def test_func5():
raise ValueError
self._assert_skipping(test_func, unittest.SkipTest)
self._assert_skipping(test_func2, ValueError)
self._assert_skipping(test_func3, unittest.SkipTest)
self._assert_skipping(test_func4, unittest.SkipTest)
self._assert_skipping(test_func5, ValueError)
class SkipTestCase(SimpleTestCase):
@skipIfDBFeature('missing')
def test_foo(self):
pass
self._assert_skipping(
SkipTestCase('test_foo').test_foo,
ValueError,
"skipIfDBFeature cannot be used on test_foo (test_utils.tests."
"SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase) "
"as SkippingTestCase.test_skip_if_db_feature.<locals>.SkipTestCase "
"doesn't allow queries against the 'default' database."
)
class SkippingClassTestCase(TestCase):
def test_skip_class_unless_db_feature(self):
@skipUnlessDBFeature("__class__")
class NotSkippedTests(TestCase):
def test_dummy(self):
return
@skipUnlessDBFeature("missing")
@skipIfDBFeature("__class__")
class SkippedTests(TestCase):
def test_will_be_skipped(self):
self.fail("We should never arrive here.")
@skipIfDBFeature("__dict__")
class SkippedTestsSubclass(SkippedTests):
pass
test_suite = unittest.TestSuite()
test_suite.addTest(NotSkippedTests('test_dummy'))
try:
test_suite.addTest(SkippedTests('test_will_be_skipped'))
test_suite.addTest(SkippedTestsSubclass('test_will_be_skipped'))
except unittest.SkipTest:
self.fail('SkipTest should not be raised here.')
result = unittest.TextTestRunner(stream=StringIO()).run(test_suite)
self.assertEqual(result.testsRun, 3)
self.assertEqual(len(result.skipped), 2)
self.assertEqual(result.skipped[0][1], 'Database has feature(s) __class__')
self.assertEqual(result.skipped[1][1], 'Database has feature(s) __class__')
def test_missing_default_databases(self):
@skipIfDBFeature('missing')
class MissingDatabases(SimpleTestCase):
def test_assertion_error(self):
pass
suite = unittest.TestSuite()
try:
suite.addTest(MissingDatabases('test_assertion_error'))
except unittest.SkipTest:
self.fail("SkipTest should not be raised at this stage")
runner = unittest.TextTestRunner(stream=StringIO())
msg = (
"skipIfDBFeature cannot be used on <class 'test_utils.tests."
"SkippingClassTestCase.test_missing_default_databases.<locals>."
"MissingDatabases'> as it doesn't allow queries against the "
"'default' database."
)
with self.assertRaisesMessage(ValueError, msg):
runner.run(suite)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesTests(TestCase):
def test_assert_num_queries(self):
def test_func():
raise ValueError
with self.assertRaises(ValueError):
self.assertNumQueries(2, test_func)
def test_assert_num_queries_with_client(self):
person = Person.objects.create(name='test')
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
self.assertNumQueries(
1,
self.client.get,
"/test_utils/get_person/%s/" % person.pk
)
def test_func():
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.assertNumQueries(2, test_func)
@unittest.skipUnless(
connection.vendor != 'sqlite' or not connection.is_in_memory_db(),
'For SQLite in-memory tests, closing the connection destroys the database.'
)
class AssertNumQueriesUponConnectionTests(TransactionTestCase):
available_apps = []
def test_ignores_connection_configuration_queries(self):
real_ensure_connection = connection.ensure_connection
connection.close()
def make_configuration_query():
is_opening_connection = connection.connection is None
real_ensure_connection()
if is_opening_connection:
# Avoid infinite recursion. Creating a cursor calls
# ensure_connection() which is currently mocked by this method.
with connection.cursor() as cursor:
cursor.execute('SELECT 1' + connection.features.bare_select_suffix)
ensure_connection = 'django.db.backends.base.base.BaseDatabaseWrapper.ensure_connection'
with mock.patch(ensure_connection, side_effect=make_configuration_query):
with self.assertNumQueries(1):
list(Car.objects.all())
class AssertQuerysetEqualTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.p1 = Person.objects.create(name='p1')
cls.p2 = Person.objects.create(name='p2')
def test_empty(self):
self.assertQuerysetEqual(Person.objects.filter(name='p3'), [])
def test_ordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1, self.p2],
)
def test_unordered(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p2, self.p1],
ordered=False
)
def test_queryset(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
Person.objects.all().order_by('name'),
)
def test_flat_values_list(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name').values_list('name', flat=True),
['p1', 'p2'],
)
def test_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[self.p1.pk, self.p2.pk],
transform=lambda x: x.pk
)
def test_repr_transform(self):
self.assertQuerysetEqual(
Person.objects.all().order_by('name'),
[repr(self.p1), repr(self.p2)],
transform=repr,
)
def test_undefined_order(self):
# Using an unordered queryset with more than one ordered value
# is an error.
msg = (
'Trying to compare non-ordered queryset against more than one '
'ordered value.'
)
with self.assertRaisesMessage(ValueError, msg):
self.assertQuerysetEqual(
Person.objects.all(),
[self.p1, self.p2],
)
# No error for one value.
self.assertQuerysetEqual(Person.objects.filter(name='p1'), [self.p1])
def test_repeated_values(self):
"""
assertQuerysetEqual checks the number of appearance of each item
when used with option ordered=False.
"""
batmobile = Car.objects.create(name='Batmobile')
k2000 = Car.objects.create(name='K 2000')
PossessedCar.objects.bulk_create([
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=batmobile, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
PossessedCar(car=k2000, belongs_to=self.p1),
])
with self.assertRaises(AssertionError):
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile, k2000],
ordered=False
)
self.assertQuerysetEqual(
self.p1.cars.all(),
[batmobile] * 2 + [k2000] * 4,
ordered=False
)
def test_maxdiff(self):
names = ['Joe Smith %s' % i for i in range(20)]
Person.objects.bulk_create([Person(name=name) for name in names])
names.append('Extra Person')
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
self.assertIn('Set self.maxDiff to None to see it.', str(ctx.exception))
original = self.maxDiff
self.maxDiff = None
try:
with self.assertRaises(AssertionError) as ctx:
self.assertQuerysetEqual(
Person.objects.filter(name__startswith='Joe'),
names,
ordered=False,
transform=lambda p: p.name,
)
finally:
self.maxDiff = original
exception_msg = str(ctx.exception)
self.assertNotIn('Set self.maxDiff to None to see it.', exception_msg)
for name in names:
self.assertIn(name, exception_msg)
@override_settings(ROOT_URLCONF='test_utils.urls')
class CaptureQueriesContextManagerTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.person_pk = str(Person.objects.create(name='test').pk)
def test_simple(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
pass
self.assertEqual(0, len(captured_queries))
def test_within(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.get(pk=self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
def test_nested(self):
with CaptureQueriesContext(connection) as captured_queries:
Person.objects.count()
with CaptureQueriesContext(connection) as nested_captured_queries:
Person.objects.count()
self.assertEqual(1, len(nested_captured_queries))
self.assertEqual(2, len(captured_queries))
def test_failure(self):
with self.assertRaises(TypeError):
with CaptureQueriesContext(connection):
raise TypeError
def test_with_client(self):
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 1)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
with CaptureQueriesContext(connection) as captured_queries:
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.client.get("/test_utils/get_person/%s/" % self.person_pk)
self.assertEqual(len(captured_queries), 2)
self.assertIn(self.person_pk, captured_queries[0]['sql'])
self.assertIn(self.person_pk, captured_queries[1]['sql'])
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertNumQueriesContextManagerTests(TestCase):
def test_simple(self):
with self.assertNumQueries(0):
pass
with self.assertNumQueries(1):
Person.objects.count()
with self.assertNumQueries(2):
Person.objects.count()
Person.objects.count()
def test_failure(self):
msg = (
'1 != 2 : 1 queries executed, 2 expected\nCaptured queries were:\n'
'1.'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNumQueries(2):
Person.objects.count()
with self.assertRaises(TypeError):
with self.assertNumQueries(4000):
raise TypeError
def test_with_client(self):
person = Person.objects.create(name="test")
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(1):
self.client.get("/test_utils/get_person/%s/" % person.pk)
with self.assertNumQueries(2):
self.client.get("/test_utils/get_person/%s/" % person.pk)
self.client.get("/test_utils/get_person/%s/" % person.pk)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertTemplateUsedContextManagerTests(SimpleTestCase):
def test_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed(template_name='template_used/base.html'):
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/base.html')
render_to_string('template_used/base.html')
def test_nested_usage(self):
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/include.html'):
render_to_string('template_used/include.html')
with self.assertTemplateUsed('template_used/extends.html'):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateUsed('template_used/base.html'):
with self.assertTemplateUsed('template_used/alternative.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/extends.html')
with self.assertTemplateNotUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
render_to_string('template_used/base.html')
def test_not_used(self):
with self.assertTemplateNotUsed('template_used/base.html'):
pass
with self.assertTemplateNotUsed('template_used/alternative.html'):
pass
def test_error_message(self):
msg = 'template_used/base.html was not rendered. No template was rendered.'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name='template_used/base.html'):
pass
msg2 = (
'template_used/base.html was not rendered. Following templates '
'were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg2):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
with self.assertRaisesMessage(AssertionError, 'No templates used to render the response'):
response = self.client.get('/test_utils/no_template_used/')
self.assertTemplateUsed(response, 'template_used/base.html')
def test_failure(self):
msg = 'response and/or template_name argument must be provided'
with self.assertRaisesMessage(TypeError, msg):
with self.assertTemplateUsed():
pass
msg = 'No templates used to render the response'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
pass
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(''):
render_to_string('template_used/base.html')
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed(template_name=''):
pass
msg = (
'template_used/base.html was not rendered. Following '
'templates were rendered: template_used/alternative.html'
)
with self.assertRaisesMessage(AssertionError, msg):
with self.assertTemplateUsed('template_used/base.html'):
render_to_string('template_used/alternative.html')
def test_assert_used_on_http_response(self):
response = HttpResponse()
error_msg = (
'assertTemplateUsed() and assertTemplateNotUsed() are only '
'usable on responses fetched using the Django test Client.'
)
with self.assertRaisesMessage(ValueError, error_msg):
self.assertTemplateUsed(response, 'template.html')
with self.assertRaisesMessage(ValueError, error_msg):
self.assertTemplateNotUsed(response, 'template.html')
class HTMLEqualTests(SimpleTestCase):
def test_html_parser(self):
element = parse_html('<div><p>Hello</p></div>')
self.assertEqual(len(element.children), 1)
self.assertEqual(element.children[0].name, 'p')
self.assertEqual(element.children[0].children[0], 'Hello')
parse_html('<p>')
parse_html('<p attr>')
dom = parse_html('<p>foo')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.name, 'p')
self.assertEqual(dom[0], 'foo')
def test_parse_html_in_script(self):
parse_html('<script>var a = "<p" + ">";</script>')
parse_html('''
<script>
var js_sha_link='<p>***</p>';
</script>
''')
# script content will be parsed to text
dom = parse_html('''
<script><p>foo</p> '</scr'+'ipt>' <span>bar</span></script>
''')
self.assertEqual(len(dom.children), 1)
self.assertEqual(dom.children[0], "<p>foo</p> '</scr'+'ipt>' <span>bar</span>")
def test_self_closing_tags(self):
self_closing_tags = [
'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link',
'meta', 'param', 'source', 'track', 'wbr',
# Deprecated tags
'frame', 'spacer',
]
for tag in self_closing_tags:
with self.subTest(tag):
dom = parse_html('<p>Hello <%s> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
dom = parse_html('<p>Hello <%s /> world</p>' % tag)
self.assertEqual(len(dom.children), 3)
self.assertEqual(dom[0], 'Hello')
self.assertEqual(dom[1].name, tag)
self.assertEqual(dom[2], 'world')
def test_simple_equal_html(self):
self.assertHTMLEqual('', '')
self.assertHTMLEqual('<p></p>', '<p></p>')
self.assertHTMLEqual('<p></p>', ' <p> </p> ')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div><p>Hello</p></div>')
self.assertHTMLEqual(
'<div><p>Hello</p></div>',
'<div> <p>Hello</p> </div>')
self.assertHTMLEqual(
'<div>\n<p>Hello</p></div>',
'<div><p>Hello</p></div>\n')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<div><p>Hello\nWorld !</p></div>',
'<div><p>Hello World\n!</p></div>')
self.assertHTMLEqual(
'<p>Hello World !</p>',
'<p>Hello World\n\n!</p>')
self.assertHTMLEqual('<p> </p>', '<p></p>')
self.assertHTMLEqual('<p/>', '<p></p>')
self.assertHTMLEqual('<p />', '<p></p>')
self.assertHTMLEqual('<input checked>', '<input checked="checked">')
self.assertHTMLEqual('<p>Hello', '<p> Hello')
self.assertHTMLEqual('<p>Hello</p>World', '<p>Hello</p> World')
def test_ignore_comments(self):
self.assertHTMLEqual(
'<div>Hello<!-- this is a comment --> World!</div>',
'<div>Hello World!</div>')
def test_unequal_html(self):
self.assertHTMLNotEqual('<p>Hello</p>', '<p>Hello!</p>')
self.assertHTMLNotEqual('<p>foobar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo bar</p>', '<p>foo bar</p>')
self.assertHTMLNotEqual('<p>foo nbsp</p>', '<p>foo </p>')
self.assertHTMLNotEqual('<p>foo #20</p>', '<p>foo </p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span><span>World</span></p>',
'<p><span>Hello</span>World</p>')
self.assertHTMLNotEqual(
'<p><span>Hello</span>World</p>',
'<p><span>Hello</span><span>World</span></p>')
def test_attributes(self):
self.assertHTMLEqual(
'<input type="text" id="id_name" />',
'<input id="id_name" type="text" />')
self.assertHTMLEqual(
'''<input type='text' id="id_name" />''',
'<input id="id_name" type="text" />')
self.assertHTMLNotEqual(
'<input type="text" id="id_name" />',
'<input type="password" id="id_name" />')
def test_class_attribute(self):
pairs = [
('<p class="foo bar"></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class=" foo bar "></p>', '<p class="bar foo"></p>'),
('<p class="foo\tbar"></p>', '<p class="bar foo"></p>'),
('<p class="\tfoo\tbar\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t\t\tfoo\t\t\tbar\t\t\t"></p>', '<p class="bar foo"></p>'),
('<p class="\t \nfoo \t\nbar\n\t "></p>', '<p class="bar foo"></p>'),
]
for html1, html2 in pairs:
with self.subTest(html1):
self.assertHTMLEqual(html1, html2)
def test_boolean_attribute(self):
html1 = '<input checked>'
html2 = '<input checked="">'
html3 = '<input checked="checked">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLEqual(html1, html3)
self.assertHTMLEqual(html2, html3)
self.assertHTMLNotEqual(html1, '<input checked="invalid">')
self.assertEqual(str(parse_html(html1)), '<input checked>')
self.assertEqual(str(parse_html(html2)), '<input checked>')
self.assertEqual(str(parse_html(html3)), '<input checked>')
def test_non_boolean_attibutes(self):
html1 = '<input value>'
html2 = '<input value="">'
html3 = '<input value="value">'
self.assertHTMLEqual(html1, html2)
self.assertHTMLNotEqual(html1, html3)
self.assertEqual(str(parse_html(html1)), '<input value="">')
self.assertEqual(str(parse_html(html2)), '<input value="">')
def test_normalize_refs(self):
pairs = [
(''', '''),
(''', "'"),
(''', '''),
(''', "'"),
("'", '''),
("'", '''),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
('&', '&'),
]
for pair in pairs:
with self.subTest(repr(pair)):
self.assertHTMLEqual(*pair)
def test_complex_examples(self):
self.assertHTMLEqual(
"""<tr><th><label for="id_first_name">First name:</label></th>
<td><input type="text" name="first_name" value="John" id="id_first_name" /></td></tr>
<tr><th><label for="id_last_name">Last name:</label></th>
<td><input type="text" id="id_last_name" name="last_name" value="Lennon" /></td></tr>
<tr><th><label for="id_birthday">Birthday:</label></th>
<td><input type="text" value="1940-10-9" name="birthday" id="id_birthday" /></td></tr>""",
"""
<tr><th>
<label for="id_first_name">First name:</label></th><td>
<input type="text" name="first_name" value="John" id="id_first_name" />
</td></tr>
<tr><th>
<label for="id_last_name">Last name:</label></th><td>
<input type="text" name="last_name" value="Lennon" id="id_last_name" />
</td></tr>
<tr><th>
<label for="id_birthday">Birthday:</label></th><td>
<input type="text" name="birthday" value="1940-10-9" id="id_birthday" />
</td></tr>
""")
self.assertHTMLEqual(
"""<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p>
This is a valid paragraph
<div> this is a div AFTER the p</div>
</body>
</html>""", """
<html>
<head>
<link rel="stylesheet">
<title>Document</title>
<meta attribute="value">
</head>
<body>
<p> This is a valid paragraph
<!-- browsers would close the p tag here -->
<div> this is a div AFTER the p</div>
</p> <!-- this is invalid HTML parsing, but it should make no
difference in most cases -->
</body>
</html>""")
def test_html_contain(self):
# equal html contains each other
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
self.assertIn(dom2, dom1)
dom2 = parse_html('<div><p>foo</p></div>')
self.assertIn(dom1, dom2)
self.assertNotIn(dom2, dom1)
self.assertNotIn('<p>foo</p>', dom2)
self.assertIn('foo', dom2)
# when a root element is used ...
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>foo</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<p>bar</p>')
self.assertIn(dom1, dom2)
dom1 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertIn(dom2, dom1)
def test_count(self):
# equal html contains each other one time
dom1 = parse_html('<p>foo')
dom2 = parse_html('<p>foo</p>')
self.assertEqual(dom1.count(dom2), 1)
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo</p><p>bar</p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo foo</p><p>foo</p>')
self.assertEqual(dom2.count('foo'), 3)
dom2 = parse_html('<p class="bar">foo</p>')
self.assertEqual(dom2.count('bar'), 0)
self.assertEqual(dom2.count('class'), 0)
self.assertEqual(dom2.count('p'), 0)
self.assertEqual(dom2.count('o'), 2)
dom2 = parse_html('<p>foo</p><p>foo</p>')
self.assertEqual(dom2.count(dom1), 2)
dom2 = parse_html('<div><p>foo<input type=""></p><p>foo</p></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<div><div><p>foo</p></div></div>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>foo</p></p>')
self.assertEqual(dom2.count(dom1), 1)
dom2 = parse_html('<p>foo<p>bar</p></p>')
self.assertEqual(dom2.count(dom1), 0)
# HTML with a root element contains the same HTML with no root element.
dom1 = parse_html('<p>foo</p><p>bar</p>')
dom2 = parse_html('<div><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 1)
# Target of search is a sequence of child elements and appears more
# than once.
dom2 = parse_html('<div><p>foo</p><p>bar</p><p>foo</p><p>bar</p></div>')
self.assertEqual(dom2.count(dom1), 2)
# Searched HTML has additional children.
dom1 = parse_html('<a/><b/>')
dom2 = parse_html('<a/><b/><c/>')
self.assertEqual(dom2.count(dom1), 1)
# No match found in children.
dom1 = parse_html('<b/><a/>')
self.assertEqual(dom2.count(dom1), 0)
# Target of search found among children and grandchildren.
dom1 = parse_html('<b/><b/>')
dom2 = parse_html('<a><b/><b/></a><b/><b/>')
self.assertEqual(dom2.count(dom1), 2)
def test_root_element_escaped_html(self):
html = '<br>'
parsed = parse_html(html)
self.assertEqual(str(parsed), html)
def test_parsing_errors(self):
with self.assertRaises(AssertionError):
self.assertHTMLEqual('<p>', '')
with self.assertRaises(AssertionError):
self.assertHTMLEqual('', '<p>')
error_msg = (
"First argument is not valid HTML:\n"
"('Unexpected end tag `div` (Line 1, Column 6)', (1, 6))"
)
with self.assertRaisesMessage(AssertionError, error_msg):
self.assertHTMLEqual('< div></ div>', '<div></div>')
with self.assertRaises(HTMLParseError):
parse_html('</p>')
def test_escaped_html_errors(self):
msg = (
'<p>\n<foo>\n</p>'
' != '
'<p>\n<foo>\n</p>\n'
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertHTMLEqual('<p><foo></p>', '<p><foo></p>')
with self.assertRaisesMessage(AssertionError, msg):
self.assertHTMLEqual('<p><foo></p>', '<p><foo></p>')
def test_contains_html(self):
response = HttpResponse('''<body>
This is a form: <form method="get">
<input type="text" name="Hello" />
</form></body>''')
self.assertNotContains(response, "<input name='Hello' type='text'>")
self.assertContains(response, '<form method="get">')
self.assertContains(response, "<input name='Hello' type='text'>", html=True)
self.assertNotContains(response, '<form method="get">', html=True)
invalid_response = HttpResponse('''<body <bad>>''')
with self.assertRaises(AssertionError):
self.assertContains(invalid_response, '<p></p>')
with self.assertRaises(AssertionError):
self.assertContains(response, '<p "whats" that>')
def test_unicode_handling(self):
response = HttpResponse('<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>')
self.assertContains(
response,
'<p class="help">Some help text for the title (with Unicode ŠĐĆŽćžšđ)</p>',
html=True
)
class JSONEqualTests(SimpleTestCase):
def test_simple_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_unordered(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz", "attr1": "foo"}'
self.assertJSONEqual(json1, json2)
def test_simple_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(json1, json2)
def test_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONEqual(valid_json, invalid_json)
def test_simple_not_equal(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr2":"baz"}'
self.assertJSONNotEqual(json1, json2)
def test_simple_not_equal_raise(self):
json1 = '{"attr1": "foo", "attr2":"baz"}'
json2 = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(json1, json2)
def test_not_equal_parsing_errors(self):
invalid_json = '{"attr1": "foo, "attr2":"baz"}'
valid_json = '{"attr1": "foo", "attr2":"baz"}'
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(invalid_json, valid_json)
with self.assertRaises(AssertionError):
self.assertJSONNotEqual(valid_json, invalid_json)
class XMLEqualTests(SimpleTestCase):
def test_simple_equal(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_unordered(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raise(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_raises_message(self):
xml1 = "<elem attr1='a' />"
xml2 = "<elem attr2='b' attr1='a' />"
msg = '''{xml1} != {xml2}
- <elem attr1='a' />
+ <elem attr2='b' attr1='a' />
? ++++++++++
'''.format(xml1=repr(xml1), xml2=repr(xml2))
with self.assertRaisesMessage(AssertionError, msg):
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal(self):
xml1 = "<elem attr1='a' attr2='c' />"
xml2 = "<elem attr1='a' attr2='b' />"
self.assertXMLNotEqual(xml1, xml2)
def test_simple_not_equal_raise(self):
xml1 = "<elem attr1='a' attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml1, xml2)
def test_parsing_errors(self):
xml_unvalid = "<elem attr1='a attr2='b' />"
xml2 = "<elem attr2='b' attr1='a' />"
with self.assertRaises(AssertionError):
self.assertXMLNotEqual(xml_unvalid, xml2)
def test_comment_root(self):
xml1 = "<?xml version='1.0'?><!-- comment1 --><elem attr1='a' attr2='b' />"
xml2 = "<?xml version='1.0'?><!-- comment2 --><elem attr2='b' attr1='a' />"
self.assertXMLEqual(xml1, xml2)
def test_simple_equal_with_leading_or_trailing_whitespace(self):
xml1 = "<elem>foo</elem> \t\n"
xml2 = " \t\n<elem>foo</elem>"
self.assertXMLEqual(xml1, xml2)
def test_simple_not_equal_with_whitespace_in_the_middle(self):
xml1 = "<elem>foo</elem><elem>bar</elem>"
xml2 = "<elem>foo</elem> <elem>bar</elem>"
self.assertXMLNotEqual(xml1, xml2)
def test_doctype_root(self):
xml1 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example1.dtd"><root />'
xml2 = '<?xml version="1.0"?><!DOCTYPE root SYSTEM "example2.dtd"><root />'
self.assertXMLEqual(xml1, xml2)
def test_processing_instruction(self):
xml1 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example1.com"?><root />'
)
xml2 = (
'<?xml version="1.0"?>'
'<?xml-model href="http://www.example2.com"?><root />'
)
self.assertXMLEqual(xml1, xml2)
self.assertXMLEqual(
'<?xml-stylesheet href="style1.xslt" type="text/xsl"?><root />',
'<?xml-stylesheet href="style2.xslt" type="text/xsl"?><root />',
)
class SkippingExtraTests(TestCase):
fixtures = ['should_not_be_loaded.json']
# HACK: This depends on internals of our TestCase subclasses
def __call__(self, result=None):
# Detect fixture loading by counting SQL queries, should be zero
with self.assertNumQueries(0):
super().__call__(result)
@unittest.skip("Fixture loading should not be performed for skipped tests.")
def test_fixtures_are_skipped(self):
pass
class AssertRaisesMsgTest(SimpleTestCase):
def test_assert_raises_message(self):
msg = "'Expected message' not found in 'Unexpected message'"
# context manager form of assertRaisesMessage()
with self.assertRaisesMessage(AssertionError, msg):
with self.assertRaisesMessage(ValueError, "Expected message"):
raise ValueError("Unexpected message")
# callable form
def func():
raise ValueError("Unexpected message")
with self.assertRaisesMessage(AssertionError, msg):
self.assertRaisesMessage(ValueError, "Expected message", func)
def test_special_re_chars(self):
"""assertRaisesMessage shouldn't interpret RE special chars."""
def func1():
raise ValueError("[.*x+]y?")
with self.assertRaisesMessage(ValueError, "[.*x+]y?"):
func1()
class AssertWarnsMessageTests(SimpleTestCase):
def test_context_manager(self):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Expected message', UserWarning)
def test_context_manager_failure(self):
msg = "Expected message' not found in 'Unexpected message'"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertWarnsMessage(UserWarning, 'Expected message'):
warnings.warn('Unexpected message', UserWarning)
def test_callable(self):
def func():
warnings.warn('Expected message', UserWarning)
self.assertWarnsMessage(UserWarning, 'Expected message', func)
def test_special_re_chars(self):
def func1():
warnings.warn('[.*x+]y?', UserWarning)
with self.assertWarnsMessage(UserWarning, '[.*x+]y?'):
func1()
# TODO: Remove when dropping support for PY39.
class AssertNoLogsTest(SimpleTestCase):
@classmethod
def setUpClass(cls):
super().setUpClass()
logging.config.dictConfig(DEFAULT_LOGGING)
cls.addClassCleanup(logging.config.dictConfig, settings.LOGGING)
def setUp(self):
self.logger = logging.getLogger('django')
@override_settings(DEBUG=True)
def test_fails_when_log_emitted(self):
msg = "Unexpected logs found: ['INFO:django:FAIL!']"
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django', 'INFO'):
self.logger.info('FAIL!')
@override_settings(DEBUG=True)
def test_text_level(self):
with self.assertNoLogs('django', 'INFO'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_int_level(self):
with self.assertNoLogs('django', logging.INFO):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_default_level(self):
with self.assertNoLogs('django'):
self.logger.debug('DEBUG logs are ignored.')
@override_settings(DEBUG=True)
def test_does_not_hide_other_failures(self):
msg = '1 != 2'
with self.assertRaisesMessage(AssertionError, msg):
with self.assertNoLogs('django'):
self.assertEqual(1, 2)
class AssertFieldOutputTests(SimpleTestCase):
def test_assert_field_output(self):
error_invalid = ['Enter a valid email address.']
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': '[email protected]'}, {'aaa': error_invalid + ['Another error']})
with self.assertRaises(AssertionError):
self.assertFieldOutput(EmailField, {'[email protected]': 'Wrong output'}, {'aaa': error_invalid})
with self.assertRaises(AssertionError):
self.assertFieldOutput(
EmailField, {'[email protected]': '[email protected]'}, {'aaa': ['Come on, gimme some well formatted data, dude.']}
)
def test_custom_required_message(self):
class MyCustomField(IntegerField):
default_error_messages = {
'required': 'This is really required.',
}
self.assertFieldOutput(MyCustomField, {}, {}, empty_value=None)
@override_settings(ROOT_URLCONF='test_utils.urls')
class AssertURLEqualTests(SimpleTestCase):
def test_equal(self):
valid_tests = (
('http://example.com/?', 'http://example.com/'),
('http://example.com/?x=1&', 'http://example.com/?x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2', 'http://example.com/?y=2&x=1'),
('http://example.com/?x=1&y=2&a=1&a=2', 'http://example.com/?a=1&a=2&y=2&x=1'),
('/path/to/?x=1&y=2&z=3', '/path/to/?z=3&y=2&x=1'),
('?x=1&y=2&z=3', '?z=3&y=2&x=1'),
('/test_utils/no_template_used/', reverse_lazy('no_template_used')),
)
for url1, url2 in valid_tests:
with self.subTest(url=url1):
self.assertURLEqual(url1, url2)
def test_not_equal(self):
invalid_tests = (
# Protocol must be the same.
('http://example.com/', 'https://example.com/'),
('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1'),
('http://example.com/?x=1&y=bar&x=2', 'https://example.com/?y=bar&x=2&x=1'),
# Parameters of the same name must be in the same order.
('/path/to?a=1&a=2', '/path/to/?a=2&a=1')
)
for url1, url2 in invalid_tests:
with self.subTest(url=url1), self.assertRaises(AssertionError):
self.assertURLEqual(url1, url2)
def test_message(self):
msg = (
"Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual('http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1')
def test_msg_prefix(self):
msg = (
"Prefix: Expected 'http://example.com/?x=1&x=2' to equal "
"'https://example.com/?x=2&x=1'"
)
with self.assertRaisesMessage(AssertionError, msg):
self.assertURLEqual(
'http://example.com/?x=1&x=2', 'https://example.com/?x=2&x=1',
msg_prefix='Prefix: ',
)
class FirstUrls:
urlpatterns = [path('first/', empty_response, name='first')]
class SecondUrls:
urlpatterns = [path('second/', empty_response, name='second')]
class SetupTestEnvironmentTests(SimpleTestCase):
def test_setup_test_environment_calling_more_than_once(self):
with self.assertRaisesMessage(RuntimeError, "setup_test_environment() was already called"):
setup_test_environment()
def test_allowed_hosts(self):
for type_ in (list, tuple):
with self.subTest(type_=type_):
allowed_hosts = type_('*')
with mock.patch('django.test.utils._TestState') as x:
del x.saved_data
with self.settings(ALLOWED_HOSTS=allowed_hosts):
setup_test_environment()
self.assertEqual(settings.ALLOWED_HOSTS, ['*', 'testserver'])
class OverrideSettingsTests(SimpleTestCase):
# #21518 -- If neither override_settings nor a setting_changed receiver
# clears the URL cache between tests, then one of test_first or
# test_second will fail.
@override_settings(ROOT_URLCONF=FirstUrls)
def test_urlconf_first(self):
reverse('first')
@override_settings(ROOT_URLCONF=SecondUrls)
def test_urlconf_second(self):
reverse('second')
def test_urlconf_cache(self):
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=FirstUrls):
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with override_settings(ROOT_URLCONF=SecondUrls):
with self.assertRaises(NoReverseMatch):
reverse('first')
self.client.get(reverse('second'))
self.client.get(reverse('first'))
with self.assertRaises(NoReverseMatch):
reverse('second')
with self.assertRaises(NoReverseMatch):
reverse('first')
with self.assertRaises(NoReverseMatch):
reverse('second')
def test_override_media_root(self):
"""
Overriding the MEDIA_ROOT setting should be reflected in the
base_location attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_ROOT='test_value'):
self.assertEqual(default_storage.base_location, 'test_value')
def test_override_media_url(self):
"""
Overriding the MEDIA_URL setting should be reflected in the
base_url attribute of django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.base_location, '')
with self.settings(MEDIA_URL='/test_value/'):
self.assertEqual(default_storage.base_url, '/test_value/')
def test_override_file_upload_permissions(self):
"""
Overriding the FILE_UPLOAD_PERMISSIONS setting should be reflected in
the file_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertEqual(default_storage.file_permissions_mode, 0o644)
with self.settings(FILE_UPLOAD_PERMISSIONS=0o777):
self.assertEqual(default_storage.file_permissions_mode, 0o777)
def test_override_file_upload_directory_permissions(self):
"""
Overriding the FILE_UPLOAD_DIRECTORY_PERMISSIONS setting should be
reflected in the directory_permissions_mode attribute of
django.core.files.storage.default_storage.
"""
self.assertIsNone(default_storage.directory_permissions_mode)
with self.settings(FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o777):
self.assertEqual(default_storage.directory_permissions_mode, 0o777)
def test_override_database_routers(self):
"""
Overriding DATABASE_ROUTERS should update the master router.
"""
test_routers = [object()]
with self.settings(DATABASE_ROUTERS=test_routers):
self.assertEqual(router.routers, test_routers)
def test_override_static_url(self):
"""
Overriding the STATIC_URL setting should be reflected in the
base_url attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_URL='/test/'):
self.assertEqual(staticfiles_storage.base_url, '/test/')
def test_override_static_root(self):
"""
Overriding the STATIC_ROOT setting should be reflected in the
location attribute of
django.contrib.staticfiles.storage.staticfiles_storage.
"""
with self.settings(STATIC_ROOT='/tmp/test'):
self.assertEqual(staticfiles_storage.location, os.path.abspath('/tmp/test'))
def test_override_staticfiles_storage(self):
"""
Overriding the STATICFILES_STORAGE setting should be reflected in
the value of django.contrib.staticfiles.storage.staticfiles_storage.
"""
new_class = 'ManifestStaticFilesStorage'
new_storage = 'django.contrib.staticfiles.storage.' + new_class
with self.settings(STATICFILES_STORAGE=new_storage):
self.assertEqual(staticfiles_storage.__class__.__name__, new_class)
def test_override_staticfiles_finders(self):
"""
Overriding the STATICFILES_FINDERS setting should be reflected in
the return value of django.contrib.staticfiles.finders.get_finders.
"""
current = get_finders()
self.assertGreater(len(list(current)), 1)
finders = ['django.contrib.staticfiles.finders.FileSystemFinder']
with self.settings(STATICFILES_FINDERS=finders):
self.assertEqual(len(list(get_finders())), len(finders))
def test_override_staticfiles_dirs(self):
"""
Overriding the STATICFILES_DIRS setting should be reflected in
the locations attribute of the
django.contrib.staticfiles.finders.FileSystemFinder instance.
"""
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
test_path = '/tmp/test'
expected_location = ('', test_path)
self.assertNotIn(expected_location, finder.locations)
with self.settings(STATICFILES_DIRS=[test_path]):
finder = get_finder('django.contrib.staticfiles.finders.FileSystemFinder')
self.assertIn(expected_location, finder.locations)
class TestBadSetUpTestData(TestCase):
"""
An exception in setUpTestData() shouldn't leak a transaction which would
cascade across the rest of the test suite.
"""
class MyException(Exception):
pass
@classmethod
def setUpClass(cls):
try:
super().setUpClass()
except cls.MyException:
cls._in_atomic_block = connection.in_atomic_block
@classmethod
def tearDownClass(Cls):
# override to avoid a second cls._rollback_atomics() which would fail.
# Normal setUpClass() methods won't have exception handling so this
# method wouldn't typically be run.
pass
@classmethod
def setUpTestData(cls):
# Simulate a broken setUpTestData() method.
raise cls.MyException()
def test_failure_in_setUpTestData_should_rollback_transaction(self):
# setUpTestData() should call _rollback_atomics() so that the
# transaction doesn't leak.
self.assertFalse(self._in_atomic_block)
class CaptureOnCommitCallbacksTests(TestCase):
databases = {'default', 'other'}
callback_called = False
def enqueue_callback(self, using='default'):
def hook():
self.callback_called = True
transaction.on_commit(hook, using=using)
def test_no_arguments(self):
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_using(self):
with self.captureOnCommitCallbacks(using='other') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, False)
callbacks[0]()
self.assertIs(self.callback_called, True)
def test_different_using(self):
with self.captureOnCommitCallbacks(using='default') as callbacks:
self.enqueue_callback(using='other')
self.assertEqual(callbacks, [])
def test_execute(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertIs(self.callback_called, True)
def test_pre_callback(self):
def pre_hook():
pass
transaction.on_commit(pre_hook, using='default')
with self.captureOnCommitCallbacks() as callbacks:
self.enqueue_callback()
self.assertEqual(len(callbacks), 1)
self.assertNotEqual(callbacks[0], pre_hook)
def test_with_rolled_back_savepoint(self):
with self.captureOnCommitCallbacks() as callbacks:
try:
with transaction.atomic():
self.enqueue_callback()
raise IntegrityError
except IntegrityError:
# Inner transaction.atomic() has been rolled back.
pass
self.assertEqual(callbacks, [])
def test_execute_recursive(self):
with self.captureOnCommitCallbacks(execute=True) as callbacks:
transaction.on_commit(self.enqueue_callback)
self.assertEqual(len(callbacks), 2)
self.assertIs(self.callback_called, True)
class DisallowedDatabaseQueriesTests(SimpleTestCase):
def test_disallowed_database_connections(self):
expected_message = (
"Database connections to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
connection.connect()
with self.assertRaisesMessage(AssertionError, expected_message):
connection.temporary_connection()
def test_disallowed_database_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
Car.objects.first()
def test_disallowed_database_chunked_cursor_queries(self):
expected_message = (
"Database queries to 'default' are not allowed in SimpleTestCase "
"subclasses. Either subclass TestCase or TransactionTestCase to "
"ensure proper test isolation or add 'default' to "
"test_utils.tests.DisallowedDatabaseQueriesTests.databases to "
"silence this failure."
)
with self.assertRaisesMessage(AssertionError, expected_message):
next(Car.objects.iterator())
class AllowedDatabaseQueriesTests(SimpleTestCase):
databases = {'default'}
def test_allowed_database_queries(self):
Car.objects.first()
def test_allowed_database_chunked_cursor_queries(self):
next(Car.objects.iterator(), None)
class DatabaseAliasTests(SimpleTestCase):
def setUp(self):
self.addCleanup(setattr, self.__class__, 'databases', self.databases)
def test_no_close_match(self):
self.__class__.databases = {'void'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'void' which is not defined "
"in settings.DATABASES."
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_close_match(self):
self.__class__.databases = {'defualt'}
message = (
"test_utils.tests.DatabaseAliasTests.databases refers to 'defualt' which is not defined "
"in settings.DATABASES. Did you mean 'default'?"
)
with self.assertRaisesMessage(ImproperlyConfigured, message):
self._validate_databases()
def test_match(self):
self.__class__.databases = {'default', 'other'}
self.assertEqual(self._validate_databases(), frozenset({'default', 'other'}))
def test_all(self):
self.__class__.databases = '__all__'
self.assertEqual(self._validate_databases(), frozenset(connections))
@isolate_apps('test_utils', attr_name='class_apps')
class IsolatedAppsTests(SimpleTestCase):
def test_installed_apps(self):
self.assertEqual([app_config.label for app_config in self.class_apps.get_app_configs()], ['test_utils'])
def test_class_decoration(self):
class ClassDecoration(models.Model):
pass
self.assertEqual(ClassDecoration._meta.apps, self.class_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_method_decoration(self, method_apps):
class MethodDecoration(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
def test_context_manager(self):
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
self.assertEqual(ContextManager._meta.apps, context_apps)
@isolate_apps('test_utils', kwarg_name='method_apps')
def test_nested(self, method_apps):
class MethodDecoration(models.Model):
pass
with isolate_apps('test_utils') as context_apps:
class ContextManager(models.Model):
pass
with isolate_apps('test_utils') as nested_context_apps:
class NestedContextManager(models.Model):
pass
self.assertEqual(MethodDecoration._meta.apps, method_apps)
self.assertEqual(ContextManager._meta.apps, context_apps)
self.assertEqual(NestedContextManager._meta.apps, nested_context_apps)
class DoNothingDecorator(TestContextDecorator):
def enable(self):
pass
def disable(self):
pass
class TestContextDecoratorTests(SimpleTestCase):
@mock.patch.object(DoNothingDecorator, 'disable')
def test_exception_in_setup(self, mock_disable):
"""An exception is setUp() is reraised after disable() is called."""
class ExceptionInSetUp(unittest.TestCase):
def setUp(self):
raise NotImplementedError('reraised')
decorator = DoNothingDecorator()
decorated_test_class = decorator.__call__(ExceptionInSetUp)()
self.assertFalse(mock_disable.called)
with self.assertRaisesMessage(NotImplementedError, 'reraised'):
decorated_test_class.setUp()
decorated_test_class.doCleanups()
self.assertTrue(mock_disable.called)
def test_cleanups_run_after_tearDown(self):
calls = []
class SaveCallsDecorator(TestContextDecorator):
def enable(self):
calls.append('enable')
def disable(self):
calls.append('disable')
class AddCleanupInSetUp(unittest.TestCase):
def setUp(self):
calls.append('setUp')
self.addCleanup(lambda: calls.append('cleanup'))
decorator = SaveCallsDecorator()
decorated_test_class = decorator.__call__(AddCleanupInSetUp)()
decorated_test_class.setUp()
decorated_test_class.tearDown()
decorated_test_class.doCleanups()
self.assertEqual(calls, ['enable', 'setUp', 'cleanup', 'disable'])
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