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63914dea269535e156e0738ad50e36e013d3c41a6ba3d97e9712ec13dad46b71 | """
Portable file locking utilities.
Based partially on an example by Jonathan Feignberg in the Python
Cookbook [1] (licensed under the Python Software License) and a ctypes port by
Anatoly Techtonik for Roundup [2] (license [3]).
[1] http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65203
[2] https://sourceforge.net/p/roundup/code/ci/default/tree/roundup/backends/portalocker.py
[3] https://sourceforge.net/p/roundup/code/ci/default/tree/COPYING.txt
Example Usage::
>>> from django.core.files import locks
>>> with open('./file', 'wb') as f:
... locks.lock(f, locks.LOCK_EX)
... f.write('Django')
"""
import os
__all__ = ('LOCK_EX', 'LOCK_SH', 'LOCK_NB', 'lock', 'unlock')
def _fd(f):
"""Get a filedescriptor from something which could be a file or an fd."""
return f.fileno() if hasattr(f, 'fileno') else f
if os.name == 'nt':
import msvcrt
from ctypes import (sizeof, c_ulong, c_void_p, c_int64,
Structure, Union, POINTER, windll, byref)
from ctypes.wintypes import BOOL, DWORD, HANDLE
LOCK_SH = 0 # the default
LOCK_NB = 0x1 # LOCKFILE_FAIL_IMMEDIATELY
LOCK_EX = 0x2 # LOCKFILE_EXCLUSIVE_LOCK
# --- Adapted from the pyserial project ---
# detect size of ULONG_PTR
if sizeof(c_ulong) != sizeof(c_void_p):
ULONG_PTR = c_int64
else:
ULONG_PTR = c_ulong
PVOID = c_void_p
# --- Union inside Structure by stackoverflow:3480240 ---
class _OFFSET(Structure):
_fields_ = [
('Offset', DWORD),
('OffsetHigh', DWORD)]
class _OFFSET_UNION(Union):
_anonymous_ = ['_offset']
_fields_ = [
('_offset', _OFFSET),
('Pointer', PVOID)]
class OVERLAPPED(Structure):
_anonymous_ = ['_offset_union']
_fields_ = [
('Internal', ULONG_PTR),
('InternalHigh', ULONG_PTR),
('_offset_union', _OFFSET_UNION),
('hEvent', HANDLE)]
LPOVERLAPPED = POINTER(OVERLAPPED)
# --- Define function prototypes for extra safety ---
LockFileEx = windll.kernel32.LockFileEx
LockFileEx.restype = BOOL
LockFileEx.argtypes = [HANDLE, DWORD, DWORD, DWORD, DWORD, LPOVERLAPPED]
UnlockFileEx = windll.kernel32.UnlockFileEx
UnlockFileEx.restype = BOOL
UnlockFileEx.argtypes = [HANDLE, DWORD, DWORD, DWORD, LPOVERLAPPED]
def lock(f, flags):
hfile = msvcrt.get_osfhandle(_fd(f))
overlapped = OVERLAPPED()
ret = LockFileEx(hfile, flags, 0, 0, 0xFFFF0000, byref(overlapped))
return bool(ret)
def unlock(f):
hfile = msvcrt.get_osfhandle(_fd(f))
overlapped = OVERLAPPED()
ret = UnlockFileEx(hfile, 0, 0, 0xFFFF0000, byref(overlapped))
return bool(ret)
else:
try:
import fcntl
LOCK_SH = fcntl.LOCK_SH # shared lock
LOCK_NB = fcntl.LOCK_NB # non-blocking
LOCK_EX = fcntl.LOCK_EX
except (ImportError, AttributeError):
# File locking is not supported.
LOCK_EX = LOCK_SH = LOCK_NB = 0
# Dummy functions that don't do anything.
def lock(f, flags):
# File is not locked
return False
def unlock(f):
# File is unlocked
return True
else:
def lock(f, flags):
ret = fcntl.flock(_fd(f), flags)
return ret == 0
def unlock(f):
ret = fcntl.flock(_fd(f), fcntl.LOCK_UN)
return ret == 0
|
373b787cd68af4f8701e227c87607141dd0c592117087f5b7cf28442d3551f09 | from itertools import chain
from django.utils.itercompat import is_iterable
class Tags:
"""
Built-in tags for internal checks.
"""
admin = 'admin'
caches = 'caches'
compatibility = 'compatibility'
database = 'database'
models = 'models'
security = 'security'
signals = 'signals'
templates = 'templates'
translation = 'translation'
urls = 'urls'
class CheckRegistry:
def __init__(self):
self.registered_checks = set()
self.deployment_checks = set()
def register(self, check=None, *tags, **kwargs):
"""
Can be used as a function or a decorator. Register given function
`f` labeled with given `tags`. The function should receive **kwargs
and return list of Errors and Warnings.
Example::
registry = CheckRegistry()
@registry.register('mytag', 'anothertag')
def my_check(apps, **kwargs):
# ... perform checks and collect `errors` ...
return errors
# or
registry.register(my_check, 'mytag', 'anothertag')
"""
def inner(check):
check.tags = tags
checks = self.deployment_checks if kwargs.get('deploy') else self.registered_checks
checks.add(check)
return check
if callable(check):
return inner(check)
else:
if check:
tags += (check,)
return inner
def run_checks(self, app_configs=None, tags=None, include_deployment_checks=False):
"""
Run all registered checks and return list of Errors and Warnings.
"""
errors = []
checks = self.get_checks(include_deployment_checks)
if tags is not None:
checks = [check for check in checks if not set(check.tags).isdisjoint(tags)]
else:
# By default, 'database'-tagged checks are not run as they do more
# than mere static code analysis.
checks = [check for check in checks if Tags.database not in check.tags]
for check in checks:
new_errors = check(app_configs=app_configs)
assert is_iterable(new_errors), (
"The function %r did not return a list. All functions registered "
"with the checks registry must return a list." % check)
errors.extend(new_errors)
return errors
def tag_exists(self, tag, include_deployment_checks=False):
return tag in self.tags_available(include_deployment_checks)
def tags_available(self, deployment_checks=False):
return set(chain.from_iterable(
check.tags for check in self.get_checks(deployment_checks)
))
def get_checks(self, include_deployment_checks=False):
checks = list(self.registered_checks)
if include_deployment_checks:
checks.extend(self.deployment_checks)
return checks
registry = CheckRegistry()
register = registry.register
run_checks = registry.run_checks
tag_exists = registry.tag_exists
|
e088c567dbb9f141603ccd5969e754ad50b9cafc097c1ad634bdf1dcbb2b5186 | import inspect
import types
from collections import defaultdict
from itertools import chain
from django.apps import apps
from django.core.checks import Error, Tags, register
@register(Tags.models)
def check_all_models(app_configs=None, **kwargs):
db_table_models = defaultdict(list)
indexes = defaultdict(list)
constraints = defaultdict(list)
errors = []
if app_configs is None:
models = apps.get_models()
else:
models = chain.from_iterable(app_config.get_models() for app_config in app_configs)
for model in models:
if model._meta.managed and not model._meta.proxy:
db_table_models[model._meta.db_table].append(model._meta.label)
if not inspect.ismethod(model.check):
errors.append(
Error(
"The '%s.check()' class method is currently overridden by %r."
% (model.__name__, model.check),
obj=model,
id='models.E020'
)
)
else:
errors.extend(model.check(**kwargs))
for model_index in model._meta.indexes:
indexes[model_index.name].append(model._meta.label)
for model_constraint in model._meta.constraints:
constraints[model_constraint.name].append(model._meta.label)
for db_table, model_labels in db_table_models.items():
if len(model_labels) != 1:
errors.append(
Error(
"db_table '%s' is used by multiple models: %s."
% (db_table, ', '.join(db_table_models[db_table])),
obj=db_table,
id='models.E028',
)
)
for index_name, model_labels in indexes.items():
if len(model_labels) > 1:
model_labels = set(model_labels)
errors.append(
Error(
"index name '%s' is not unique %s %s." % (
index_name,
'for model' if len(model_labels) == 1 else 'amongst models:',
', '.join(sorted(model_labels)),
),
id='models.E029' if len(model_labels) == 1 else 'models.E030',
),
)
for constraint_name, model_labels in constraints.items():
if len(model_labels) > 1:
model_labels = set(model_labels)
errors.append(
Error(
"constraint name '%s' is not unique %s %s." % (
constraint_name,
'for model' if len(model_labels) == 1 else 'amongst models:',
', '.join(sorted(model_labels)),
),
id='models.E031' if len(model_labels) == 1 else 'models.E032',
),
)
return errors
def _check_lazy_references(apps, ignore=None):
"""
Ensure all lazy (i.e. string) model references have been resolved.
Lazy references are used in various places throughout Django, primarily in
related fields and model signals. Identify those common cases and provide
more helpful error messages for them.
The ignore parameter is used by StateApps to exclude swappable models from
this check.
"""
pending_models = set(apps._pending_operations) - (ignore or set())
# Short circuit if there aren't any errors.
if not pending_models:
return []
from django.db.models import signals
model_signals = {
signal: name for name, signal in vars(signals).items()
if isinstance(signal, signals.ModelSignal)
}
def extract_operation(obj):
"""
Take a callable found in Apps._pending_operations and identify the
original callable passed to Apps.lazy_model_operation(). If that
callable was a partial, return the inner, non-partial function and
any arguments and keyword arguments that were supplied with it.
obj is a callback defined locally in Apps.lazy_model_operation() and
annotated there with a `func` attribute so as to imitate a partial.
"""
operation, args, keywords = obj, [], {}
while hasattr(operation, 'func'):
args.extend(getattr(operation, 'args', []))
keywords.update(getattr(operation, 'keywords', {}))
operation = operation.func
return operation, args, keywords
def app_model_error(model_key):
try:
apps.get_app_config(model_key[0])
model_error = "app '%s' doesn't provide model '%s'" % model_key
except LookupError:
model_error = "app '%s' isn't installed" % model_key[0]
return model_error
# Here are several functions which return CheckMessage instances for the
# most common usages of lazy operations throughout Django. These functions
# take the model that was being waited on as an (app_label, modelname)
# pair, the original lazy function, and its positional and keyword args as
# determined by extract_operation().
def field_error(model_key, func, args, keywords):
error_msg = (
"The field %(field)s was declared with a lazy reference "
"to '%(model)s', but %(model_error)s."
)
params = {
'model': '.'.join(model_key),
'field': keywords['field'],
'model_error': app_model_error(model_key),
}
return Error(error_msg % params, obj=keywords['field'], id='fields.E307')
def signal_connect_error(model_key, func, args, keywords):
error_msg = (
"%(receiver)s was connected to the '%(signal)s' signal with a "
"lazy reference to the sender '%(model)s', but %(model_error)s."
)
receiver = args[0]
# The receiver is either a function or an instance of class
# defining a `__call__` method.
if isinstance(receiver, types.FunctionType):
description = "The function '%s'" % receiver.__name__
elif isinstance(receiver, types.MethodType):
description = "Bound method '%s.%s'" % (receiver.__self__.__class__.__name__, receiver.__name__)
else:
description = "An instance of class '%s'" % receiver.__class__.__name__
signal_name = model_signals.get(func.__self__, 'unknown')
params = {
'model': '.'.join(model_key),
'receiver': description,
'signal': signal_name,
'model_error': app_model_error(model_key),
}
return Error(error_msg % params, obj=receiver.__module__, id='signals.E001')
def default_error(model_key, func, args, keywords):
error_msg = "%(op)s contains a lazy reference to %(model)s, but %(model_error)s."
params = {
'op': func,
'model': '.'.join(model_key),
'model_error': app_model_error(model_key),
}
return Error(error_msg % params, obj=func, id='models.E022')
# Maps common uses of lazy operations to corresponding error functions
# defined above. If a key maps to None, no error will be produced.
# default_error() will be used for usages that don't appear in this dict.
known_lazy = {
('django.db.models.fields.related', 'resolve_related_class'): field_error,
('django.db.models.fields.related', 'set_managed'): None,
('django.dispatch.dispatcher', 'connect'): signal_connect_error,
}
def build_error(model_key, func, args, keywords):
key = (func.__module__, func.__name__)
error_fn = known_lazy.get(key, default_error)
return error_fn(model_key, func, args, keywords) if error_fn else None
return sorted(filter(None, (
build_error(model_key, *extract_operation(func))
for model_key in pending_models
for func in apps._pending_operations[model_key]
)), key=lambda error: error.msg)
@register(Tags.models)
def check_lazy_references(app_configs=None, **kwargs):
return _check_lazy_references(apps)
|
df20abbf8c46c716a2f1ad61258b66319537758c447ba93341f9f835e85db0d1 | from django.conf import settings
from django.utils.translation.trans_real import language_code_re
from . import Error, Tags, register
E001 = Error(
'You have provided an invalid value for the LANGUAGE_CODE setting: {!r}.',
id='translation.E001',
)
E002 = Error(
'You have provided an invalid language code in the LANGUAGES setting: {!r}.',
id='translation.E002',
)
E003 = Error(
'You have provided an invalid language code in the LANGUAGES_BIDI setting: {!r}.',
id='translation.E003',
)
E004 = Error(
'You have provided a value for the LANGUAGE_CODE setting that is not in '
'the LANGUAGES setting.',
id='translation.E004',
)
@register(Tags.translation)
def check_setting_language_code(app_configs, **kwargs):
"""Error if LANGUAGE_CODE setting is invalid."""
tag = settings.LANGUAGE_CODE
if not isinstance(tag, str) or not language_code_re.match(tag):
return [Error(E001.msg.format(tag), id=E001.id)]
return []
@register(Tags.translation)
def check_setting_languages(app_configs, **kwargs):
"""Error if LANGUAGES setting is invalid."""
return [
Error(E002.msg.format(tag), id=E002.id)
for tag, _ in settings.LANGUAGES if not isinstance(tag, str) or not language_code_re.match(tag)
]
@register(Tags.translation)
def check_setting_languages_bidi(app_configs, **kwargs):
"""Error if LANGUAGES_BIDI setting is invalid."""
return [
Error(E003.msg.format(tag), id=E003.id)
for tag in settings.LANGUAGES_BIDI if not isinstance(tag, str) or not language_code_re.match(tag)
]
@register(Tags.translation)
def check_language_settings_consistent(app_configs, **kwargs):
"""Error if language settings are not consistent with each other."""
available_tags = {i for i, _ in settings.LANGUAGES} | {'en-us'}
if settings.LANGUAGE_CODE not in available_tags:
return [E004]
return []
|
57ce0d52922d7608064c65b4eaa3bf56143b771cd804f6edb2b3750b32c88c1d | from .messages import (
CRITICAL, DEBUG, ERROR, INFO, WARNING, CheckMessage, Critical, Debug,
Error, Info, Warning,
)
from .registry import Tags, register, run_checks, tag_exists
# Import these to force registration of checks
import django.core.checks.caches # NOQA isort:skip
import django.core.checks.database # NOQA isort:skip
import django.core.checks.model_checks # NOQA isort:skip
import django.core.checks.security.base # NOQA isort:skip
import django.core.checks.security.csrf # NOQA isort:skip
import django.core.checks.security.sessions # NOQA isort:skip
import django.core.checks.templates # NOQA isort:skip
import django.core.checks.translation # NOQA isort:skip
import django.core.checks.urls # NOQA isort:skip
__all__ = [
'CheckMessage',
'Debug', 'Info', 'Warning', 'Error', 'Critical',
'DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL',
'register', 'run_checks', 'tag_exists', 'Tags',
]
|
b44f9436fcf44bf528a5523a12ce95d58bc5f0a491b056428e8f7bccb9c067b9 | import functools
import os
import pkgutil
import sys
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 = [str(a) for a in args]
# Any required arguments which are passed in via **options must be passed
# to parse_args().
parse_args += [
'{}={}'.format(min(opt.option_strings), arg_options[opt.dest])
for opt in parser._actions if opt.required and opt.dest in options
]
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
else:
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(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()
|
d2cf0925c2910f154ecd2a7c09e7eff32bb068c63680d20aabaad4e32c67a8a3 | """
Base classes for writing management commands (named commands which can
be executed through ``django-admin`` or ``manage.py``).
"""
import os
import sys
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
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.
"""
pass
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 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 boolean; if ``True``, entire Django project will be checked for errors
prior to executing the command. Default value is ``True``.
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 = True
# 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 = ()
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
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
)
parser.add_argument('--version', action='version', version=self.get_version())
parser.add_argument(
'-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',
)
parser.add_argument(
'--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.'
),
)
parser.add_argument(
'--pythonpath',
help='A directory to add to the Python path, e.g. "/home/djangoprojects/myproject".',
)
parser.add_argument('--traceback', action='store_true', help='Raise on CommandError exceptions')
parser.add_argument(
'--no-color', action='store_true',
help="Don't colorize the command output.",
)
parser.add_argument(
'--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 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 Exception as e:
if options.traceback or not isinstance(e, CommandError):
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(1)
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']:
self.check()
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 _run_checks(self, **kwargs):
return checks.run_checks(**kwargs)
def check(self, app_configs=None, tags=None, display_num_errors=False,
include_deployment_checks=False, fail_level=checks.ERROR):
"""
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 = self._run_checks(
app_configs=app_configs,
tags=tags,
include_deployment_checks=include_deployment_checks,
)
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 %(unpplied_migration_count)s unapplied migration(s). "
"Your project may not work properly until you apply the "
"migrations for app(s): %(apps_waiting_migration)s." % {
"unpplied_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.\n"))
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')
|
03c75475103fcf87f5388121105ca1e52ec3e8c8974e985ce8db489cdecfef75 | import fnmatch
import os
from pathlib import Path
from subprocess import PIPE, Popen
from django.apps import apps as installed_apps
from django.utils.crypto import get_random_string
from django.utils.encoding import DEFAULT_LOCALE_ENCODING
from .base import CommandError, CommandParser
def popen_wrapper(args, stdout_encoding='utf-8'):
"""
Friendly wrapper around Popen.
Return stdout output, stderr output, and OS status code.
"""
try:
p = Popen(args, shell=False, stdout=PIPE, stderr=PIPE, close_fds=os.name != 'nt')
except OSError as err:
raise CommandError('Error executing %s' % args[0]) from err
output, errors = p.communicate()
return (
output.decode(stdout_encoding),
errors.decode(DEFAULT_LOCALE_ENCODING, errors='replace'),
p.returncode
)
def handle_extensions(extensions):
"""
Organize multiple extensions that are separated with commas or passed by
using --extension/-e multiple times.
For example: running 'django-admin makemessages -e js,txt -e xhtml -a'
would result in an extension list: ['.js', '.txt', '.xhtml']
>>> handle_extensions(['.html', 'html,js,py,py,py,.py', 'py,.py'])
{'.html', '.js', '.py'}
>>> handle_extensions(['.html, txt,.tpl'])
{'.html', '.tpl', '.txt'}
"""
ext_list = []
for ext in extensions:
ext_list.extend(ext.replace(' ', '').split(','))
for i, ext in enumerate(ext_list):
if not ext.startswith('.'):
ext_list[i] = '.%s' % ext_list[i]
return set(ext_list)
def find_command(cmd, path=None, pathext=None):
if path is None:
path = os.environ.get('PATH', '').split(os.pathsep)
if isinstance(path, str):
path = [path]
# check if there are funny path extensions for executables, e.g. Windows
if pathext is None:
pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD').split(os.pathsep)
# don't use extensions if the command ends with one of them
for ext in pathext:
if cmd.endswith(ext):
pathext = ['']
break
# check if we find the command on PATH
for p in path:
f = os.path.join(p, cmd)
if os.path.isfile(f):
return f
for ext in pathext:
fext = f + ext
if os.path.isfile(fext):
return fext
return None
def get_random_secret_key():
"""
Return a 50 character random string usable as a SECRET_KEY setting value.
"""
chars = 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)'
return get_random_string(50, chars)
def parse_apps_and_model_labels(labels):
"""
Parse a list of "app_label.ModelName" or "app_label" strings into actual
objects and return a two-element tuple:
(set of model classes, set of app_configs).
Raise a CommandError if some specified models or apps don't exist.
"""
apps = set()
models = set()
for label in labels:
if '.' in label:
try:
model = installed_apps.get_model(label)
except LookupError:
raise CommandError('Unknown model: %s' % label)
models.add(model)
else:
try:
app_config = installed_apps.get_app_config(label)
except LookupError as e:
raise CommandError(str(e))
apps.add(app_config)
return models, apps
def get_command_line_option(argv, option):
"""
Return the value of a command line option (which should include leading
dashes, e.g. '--testrunnner') from an argument list. Return None if the
option wasn't passed or if the argument list couldn't be parsed.
"""
parser = CommandParser(add_help=False, allow_abbrev=False)
parser.add_argument(option, dest='value')
try:
options, _ = parser.parse_known_args(argv[2:])
except CommandError:
return None
else:
return options.value
def normalize_path_patterns(patterns):
"""Normalize an iterable of glob style patterns based on OS."""
patterns = [os.path.normcase(p) for p in patterns]
dir_suffixes = {'%s*' % path_sep for path_sep in {'/', os.sep}}
norm_patterns = []
for pattern in patterns:
for dir_suffix in dir_suffixes:
if pattern.endswith(dir_suffix):
norm_patterns.append(pattern[:-len(dir_suffix)])
break
else:
norm_patterns.append(pattern)
return norm_patterns
def is_ignored_path(path, ignore_patterns):
"""
Check if the given path should be ignored or not based on matching
one of the glob style `ignore_patterns`.
"""
path = Path(path)
def ignore(pattern):
return fnmatch.fnmatchcase(path.name, pattern) or fnmatch.fnmatchcase(str(path), pattern)
return any(ignore(pattern) for pattern in normalize_path_patterns(ignore_patterns))
|
8fa649bcfbb7229af0d0af442fc12ee61be287f9c92dffcac8e064614ae9d8ac | import cgi
import mimetypes
import os
import posixpath
import shutil
import stat
import tempfile
from importlib import import_module
from os import path
from urllib.request import urlretrieve
import django
from django.conf import settings
from django.core.management.base import BaseCommand, CommandError
from django.core.management.utils import handle_extensions
from django.template import Context, Engine
from django.utils import archive
from django.utils.version import get_docs_version
class TemplateCommand(BaseCommand):
"""
Copy either a Django application layout template or a Django project
layout template into the specified directory.
:param style: A color style object (see django.core.management.color).
:param app_or_project: The string 'app' or 'project'.
:param name: The name of the application or project.
:param directory: The directory to which the template should be copied.
:param options: The additional variables passed to project or app templates
"""
requires_system_checks = False
# The supported URL schemes
url_schemes = ['http', 'https', 'ftp']
# Rewrite the following suffixes when determining the target filename.
rewrite_template_suffixes = (
# Allow shipping invalid .py files without byte-compilation.
('.py-tpl', '.py'),
)
def add_arguments(self, parser):
parser.add_argument('name', help='Name of the application or project.')
parser.add_argument('directory', nargs='?', help='Optional destination directory')
parser.add_argument('--template', help='The path or URL to load the template from.')
parser.add_argument(
'--extension', '-e', dest='extensions',
action='append', default=['py'],
help='The file extension(s) to render (default: "py"). '
'Separate multiple extensions with commas, or use '
'-e multiple times.'
)
parser.add_argument(
'--name', '-n', dest='files',
action='append', default=[],
help='The file name(s) to render. Separate multiple file names '
'with commas, or use -n multiple times.'
)
def handle(self, app_or_project, name, target=None, **options):
self.app_or_project = app_or_project
self.a_or_an = 'an' if app_or_project == 'app' else 'a'
self.paths_to_remove = []
self.verbosity = options['verbosity']
self.validate_name(name)
# if some directory is given, make sure it's nicely expanded
if target is None:
top_dir = path.join(os.getcwd(), name)
try:
os.makedirs(top_dir)
except FileExistsError:
raise CommandError("'%s' already exists" % top_dir)
except OSError as e:
raise CommandError(e)
else:
if app_or_project == 'app':
self.validate_name(os.path.basename(target), 'directory')
top_dir = os.path.abspath(path.expanduser(target))
if not os.path.exists(top_dir):
raise CommandError("Destination directory '%s' does not "
"exist, please create it first." % top_dir)
extensions = tuple(handle_extensions(options['extensions']))
extra_files = []
for file in options['files']:
extra_files.extend(map(lambda x: x.strip(), file.split(',')))
if self.verbosity >= 2:
self.stdout.write("Rendering %s template files with "
"extensions: %s\n" %
(app_or_project, ', '.join(extensions)))
self.stdout.write("Rendering %s template files with "
"filenames: %s\n" %
(app_or_project, ', '.join(extra_files)))
base_name = '%s_name' % app_or_project
base_subdir = '%s_template' % app_or_project
base_directory = '%s_directory' % app_or_project
camel_case_name = 'camel_case_%s_name' % app_or_project
camel_case_value = ''.join(x for x in name.title() if x != '_')
context = Context({
**options,
base_name: name,
base_directory: top_dir,
camel_case_name: camel_case_value,
'docs_version': get_docs_version(),
'django_version': django.__version__,
}, autoescape=False)
# Setup a stub settings environment for template rendering
if not settings.configured:
settings.configure()
django.setup()
template_dir = self.handle_template(options['template'],
base_subdir)
prefix_length = len(template_dir) + 1
for root, dirs, files in os.walk(template_dir):
path_rest = root[prefix_length:]
relative_dir = path_rest.replace(base_name, name)
if relative_dir:
target_dir = path.join(top_dir, relative_dir)
os.makedirs(target_dir, exist_ok=True)
for dirname in dirs[:]:
if dirname.startswith('.') or dirname == '__pycache__':
dirs.remove(dirname)
for filename in files:
if filename.endswith(('.pyo', '.pyc', '.py.class')):
# Ignore some files as they cause various breakages.
continue
old_path = path.join(root, filename)
new_path = path.join(top_dir, relative_dir,
filename.replace(base_name, name))
for old_suffix, new_suffix in self.rewrite_template_suffixes:
if new_path.endswith(old_suffix):
new_path = new_path[:-len(old_suffix)] + new_suffix
break # Only rewrite once
if path.exists(new_path):
raise CommandError(
"%s already exists. Overlaying %s %s into an existing "
"directory won't replace conflicting files." % (
new_path, self.a_or_an, app_or_project,
)
)
# Only render the Python files, as we don't want to
# accidentally render Django templates files
if new_path.endswith(extensions) or filename in extra_files:
with open(old_path, encoding='utf-8') as template_file:
content = template_file.read()
template = Engine().from_string(content)
content = template.render(context)
with open(new_path, 'w', encoding='utf-8') as new_file:
new_file.write(content)
else:
shutil.copyfile(old_path, new_path)
if self.verbosity >= 2:
self.stdout.write("Creating %s\n" % new_path)
try:
shutil.copymode(old_path, new_path)
self.make_writeable(new_path)
except OSError:
self.stderr.write(
"Notice: Couldn't set permission bits on %s. You're "
"probably using an uncommon filesystem setup. No "
"problem." % new_path, self.style.NOTICE)
if self.paths_to_remove:
if self.verbosity >= 2:
self.stdout.write("Cleaning up temporary files.\n")
for path_to_remove in self.paths_to_remove:
if path.isfile(path_to_remove):
os.remove(path_to_remove)
else:
shutil.rmtree(path_to_remove)
def handle_template(self, template, subdir):
"""
Determine where the app or project templates are.
Use django.__path__[0] as the default because the Django install
directory isn't known.
"""
if template is None:
return path.join(django.__path__[0], 'conf', subdir)
else:
if template.startswith('file://'):
template = template[7:]
expanded_template = path.expanduser(template)
expanded_template = path.normpath(expanded_template)
if path.isdir(expanded_template):
return expanded_template
if self.is_url(template):
# downloads the file and returns the path
absolute_path = self.download(template)
else:
absolute_path = path.abspath(expanded_template)
if path.exists(absolute_path):
return self.extract(absolute_path)
raise CommandError("couldn't handle %s template %s." %
(self.app_or_project, template))
def validate_name(self, name, name_or_dir='name'):
if name is None:
raise CommandError('you must provide {an} {app} name'.format(
an=self.a_or_an,
app=self.app_or_project,
))
# Check it's a valid directory name.
if not name.isidentifier():
raise CommandError(
"'{name}' is not a valid {app} {type}. Please make sure the "
"{type} is a valid identifier.".format(
name=name,
app=self.app_or_project,
type=name_or_dir,
)
)
# Check it cannot be imported.
try:
import_module(name)
except ImportError:
pass
else:
raise CommandError(
"'{name}' conflicts with the name of an existing Python "
"module and cannot be used as {an} {app} {type}. Please try "
"another {type}.".format(
name=name,
an=self.a_or_an,
app=self.app_or_project,
type=name_or_dir,
)
)
def download(self, url):
"""
Download the given URL and return the file name.
"""
def cleanup_url(url):
tmp = url.rstrip('/')
filename = tmp.split('/')[-1]
if url.endswith('/'):
display_url = tmp + '/'
else:
display_url = url
return filename, display_url
prefix = 'django_%s_template_' % self.app_or_project
tempdir = tempfile.mkdtemp(prefix=prefix, suffix='_download')
self.paths_to_remove.append(tempdir)
filename, display_url = cleanup_url(url)
if self.verbosity >= 2:
self.stdout.write("Downloading %s\n" % display_url)
try:
the_path, info = urlretrieve(url, path.join(tempdir, filename))
except OSError as e:
raise CommandError("couldn't download URL %s to %s: %s" %
(url, filename, e))
used_name = the_path.split('/')[-1]
# Trying to get better name from response headers
content_disposition = info.get('content-disposition')
if content_disposition:
_, params = cgi.parse_header(content_disposition)
guessed_filename = params.get('filename') or used_name
else:
guessed_filename = used_name
# Falling back to content type guessing
ext = self.splitext(guessed_filename)[1]
content_type = info.get('content-type')
if not ext and content_type:
ext = mimetypes.guess_extension(content_type)
if ext:
guessed_filename += ext
# Move the temporary file to a filename that has better
# chances of being recognized by the archive utils
if used_name != guessed_filename:
guessed_path = path.join(tempdir, guessed_filename)
shutil.move(the_path, guessed_path)
return guessed_path
# Giving up
return the_path
def splitext(self, the_path):
"""
Like os.path.splitext, but takes off .tar, too
"""
base, ext = posixpath.splitext(the_path)
if base.lower().endswith('.tar'):
ext = base[-4:] + ext
base = base[:-4]
return base, ext
def extract(self, filename):
"""
Extract the given file to a temporarily and return
the path of the directory with the extracted content.
"""
prefix = 'django_%s_template_' % self.app_or_project
tempdir = tempfile.mkdtemp(prefix=prefix, suffix='_extract')
self.paths_to_remove.append(tempdir)
if self.verbosity >= 2:
self.stdout.write("Extracting %s\n" % filename)
try:
archive.extract(filename, tempdir)
return tempdir
except (archive.ArchiveException, OSError) as e:
raise CommandError("couldn't extract file %s to %s: %s" %
(filename, tempdir, e))
def is_url(self, template):
"""Return True if the name looks like a URL."""
if ':' not in template:
return False
scheme = template.split(':', 1)[0].lower()
return scheme in self.url_schemes
def make_writeable(self, filename):
"""
Make sure that the file is writeable.
Useful if our source is read-only.
"""
if not os.access(filename, os.W_OK):
st = os.stat(filename)
new_permissions = stat.S_IMODE(st.st_mode) | stat.S_IWUSR
os.chmod(filename, new_permissions)
|
0f157118584567f683327de6c276ef5f958453db323882fe476df908b6ad7f0e | from django.apps import apps
from django.db import models
def sql_flush(style, connection, only_django=False, reset_sequences=True, allow_cascade=False):
"""
Return a list of the SQL statements used to flush the database.
If only_django is True, only include the table names that have associated
Django models and are in INSTALLED_APPS .
"""
if only_django:
tables = connection.introspection.django_table_names(only_existing=True, include_views=False)
else:
tables = connection.introspection.table_names(include_views=False)
seqs = connection.introspection.sequence_list() if reset_sequences else ()
return connection.ops.sql_flush(style, tables, seqs, allow_cascade)
def emit_pre_migrate_signal(verbosity, interactive, db, **kwargs):
# Emit the pre_migrate signal for every application.
for app_config in apps.get_app_configs():
if app_config.models_module is None:
continue
if verbosity >= 2:
print("Running pre-migrate handlers for application %s" % app_config.label)
models.signals.pre_migrate.send(
sender=app_config,
app_config=app_config,
verbosity=verbosity,
interactive=interactive,
using=db,
**kwargs
)
def emit_post_migrate_signal(verbosity, interactive, db, **kwargs):
# Emit the post_migrate signal for every application.
for app_config in apps.get_app_configs():
if app_config.models_module is None:
continue
if verbosity >= 2:
print("Running post-migrate handlers for application %s" % app_config.label)
models.signals.post_migrate.send(
sender=app_config,
app_config=app_config,
verbosity=verbosity,
interactive=interactive,
using=db,
**kwargs
)
|
de6f2061a8981a9b61454d8f14f92e2b1645bdf937f80f29463e0babb7a31d3c | """
Sets up the terminal color scheme.
"""
import functools
import os
import sys
from django.utils import termcolors
def supports_color():
"""
Return True if the running system's terminal supports color,
and False otherwise.
"""
plat = sys.platform
supported_platform = plat != 'Pocket PC' and (plat != 'win32' or 'ANSICON' in os.environ)
# isatty is not always implemented, #6223.
is_a_tty = hasattr(sys.stdout, 'isatty') and sys.stdout.isatty()
return supported_platform and is_a_tty
class Style:
pass
def make_style(config_string=''):
"""
Create a Style object from the given config_string.
If config_string is empty django.utils.termcolors.DEFAULT_PALETTE is used.
"""
style = Style()
color_settings = termcolors.parse_color_setting(config_string)
# The nocolor palette has all available roles.
# Use that palette as the basis for populating
# the palette as defined in the environment.
for role in termcolors.PALETTES[termcolors.NOCOLOR_PALETTE]:
if color_settings:
format = color_settings.get(role, {})
style_func = termcolors.make_style(**format)
else:
def style_func(x):
return x
setattr(style, role, style_func)
# For backwards compatibility,
# set style for ERROR_OUTPUT == ERROR
style.ERROR_OUTPUT = style.ERROR
return style
@functools.lru_cache(maxsize=None)
def no_style():
"""
Return a Style object with no color scheme.
"""
return make_style('nocolor')
def color_style(force_color=False):
"""
Return a Style object from the Django color scheme.
"""
if not force_color and not supports_color():
return no_style()
return make_style(os.environ.get('DJANGO_COLORS', ''))
|
5309733d2e9cd0a2a984ed635f7f530ce1c54fae32666da8965b8c6830fdb53d | """
Module for abstract serializer/unserializer base classes.
"""
from io import StringIO
from django.core.exceptions import ObjectDoesNotExist
from django.db import models
DEFER_FIELD = object()
class SerializerDoesNotExist(KeyError):
"""The requested serializer was not found."""
pass
class SerializationError(Exception):
"""Something bad happened during serialization."""
pass
class DeserializationError(Exception):
"""Something bad happened during deserialization."""
@classmethod
def WithData(cls, original_exc, model, fk, field_value):
"""
Factory method for creating a deserialization error which has a more
explanatory message.
"""
return cls("%s: (%s:pk=%s) field_value was '%s'" % (original_exc, model, fk, field_value))
class M2MDeserializationError(Exception):
"""Something bad happened during deserialization of a ManyToManyField."""
def __init__(self, original_exc, pk):
self.original_exc = original_exc
self.pk = pk
class ProgressBar:
progress_width = 75
def __init__(self, output, total_count):
self.output = output
self.total_count = total_count
self.prev_done = 0
def update(self, count):
if not self.output:
return
perc = count * 100 // self.total_count
done = perc * self.progress_width // 100
if self.prev_done >= done:
return
self.prev_done = done
cr = '' if self.total_count == 1 else '\r'
self.output.write(cr + '[' + '.' * done + ' ' * (self.progress_width - done) + ']')
if done == self.progress_width:
self.output.write('\n')
self.output.flush()
class Serializer:
"""
Abstract serializer base class.
"""
# Indicates if the implemented serializer is only available for
# internal Django use.
internal_use_only = False
progress_class = ProgressBar
stream_class = StringIO
def serialize(self, queryset, *, stream=None, fields=None, use_natural_foreign_keys=False,
use_natural_primary_keys=False, progress_output=None, object_count=0, **options):
"""
Serialize a queryset.
"""
self.options = options
self.stream = stream if stream is not None else self.stream_class()
self.selected_fields = fields
self.use_natural_foreign_keys = use_natural_foreign_keys
self.use_natural_primary_keys = use_natural_primary_keys
progress_bar = self.progress_class(progress_output, object_count)
self.start_serialization()
self.first = True
for count, obj in enumerate(queryset, start=1):
self.start_object(obj)
# Use the concrete parent class' _meta instead of the object's _meta
# This is to avoid local_fields problems for proxy models. Refs #17717.
concrete_model = obj._meta.concrete_model
# When using natural primary keys, retrieve the pk field of the
# parent for multi-table inheritance child models. That field must
# be serialized, otherwise deserialization isn't possible.
if self.use_natural_primary_keys:
pk = concrete_model._meta.pk
pk_parent = pk if pk.remote_field and pk.remote_field.parent_link else None
else:
pk_parent = None
for field in concrete_model._meta.local_fields:
if field.serialize or field is pk_parent:
if field.remote_field is None:
if self.selected_fields is None or field.attname in self.selected_fields:
self.handle_field(obj, field)
else:
if self.selected_fields is None or field.attname[:-3] in self.selected_fields:
self.handle_fk_field(obj, field)
for field in concrete_model._meta.many_to_many:
if field.serialize:
if self.selected_fields is None or field.attname in self.selected_fields:
self.handle_m2m_field(obj, field)
self.end_object(obj)
progress_bar.update(count)
self.first = self.first and False
self.end_serialization()
return self.getvalue()
def start_serialization(self):
"""
Called when serializing of the queryset starts.
"""
raise NotImplementedError('subclasses of Serializer must provide a start_serialization() method')
def end_serialization(self):
"""
Called when serializing of the queryset ends.
"""
pass
def start_object(self, obj):
"""
Called when serializing of an object starts.
"""
raise NotImplementedError('subclasses of Serializer must provide a start_object() method')
def end_object(self, obj):
"""
Called when serializing of an object ends.
"""
pass
def handle_field(self, obj, field):
"""
Called to handle each individual (non-relational) field on an object.
"""
raise NotImplementedError('subclasses of Serializer must provide a handle_field() method')
def handle_fk_field(self, obj, field):
"""
Called to handle a ForeignKey field.
"""
raise NotImplementedError('subclasses of Serializer must provide a handle_fk_field() method')
def handle_m2m_field(self, obj, field):
"""
Called to handle a ManyToManyField.
"""
raise NotImplementedError('subclasses of Serializer must provide a handle_m2m_field() method')
def getvalue(self):
"""
Return the fully serialized queryset (or None if the output stream is
not seekable).
"""
if callable(getattr(self.stream, 'getvalue', None)):
return self.stream.getvalue()
class Deserializer:
"""
Abstract base deserializer class.
"""
def __init__(self, stream_or_string, **options):
"""
Init this serializer given a stream or a string
"""
self.options = options
if isinstance(stream_or_string, str):
self.stream = StringIO(stream_or_string)
else:
self.stream = stream_or_string
def __iter__(self):
return self
def __next__(self):
"""Iteration interface -- return the next item in the stream"""
raise NotImplementedError('subclasses of Deserializer must provide a __next__() method')
class DeserializedObject:
"""
A deserialized model.
Basically a container for holding the pre-saved deserialized data along
with the many-to-many data saved with the object.
Call ``save()`` to save the object (with the many-to-many data) to the
database; call ``save(save_m2m=False)`` to save just the object fields
(and not touch the many-to-many stuff.)
"""
def __init__(self, obj, m2m_data=None, deferred_fields=None):
self.object = obj
self.m2m_data = m2m_data
self.deferred_fields = deferred_fields
def __repr__(self):
return "<%s: %s(pk=%s)>" % (
self.__class__.__name__,
self.object._meta.label,
self.object.pk,
)
def save(self, save_m2m=True, using=None, **kwargs):
# Call save on the Model baseclass directly. This bypasses any
# model-defined save. The save is also forced to be raw.
# raw=True is passed to any pre/post_save signals.
models.Model.save_base(self.object, using=using, raw=True, **kwargs)
if self.m2m_data and save_m2m:
for accessor_name, object_list in self.m2m_data.items():
getattr(self.object, accessor_name).set(object_list)
# prevent a second (possibly accidental) call to save() from saving
# the m2m data twice.
self.m2m_data = None
def save_deferred_fields(self, using=None):
self.m2m_data = {}
for field, field_value in self.deferred_fields.items():
opts = self.object._meta
label = opts.app_label + '.' + opts.model_name
if isinstance(field.remote_field, models.ManyToManyRel):
try:
values = deserialize_m2m_values(field, field_value, using, handle_forward_references=False)
except M2MDeserializationError as e:
raise DeserializationError.WithData(e.original_exc, label, self.object.pk, e.pk)
self.m2m_data[field.name] = values
elif isinstance(field.remote_field, models.ManyToOneRel):
try:
value = deserialize_fk_value(field, field_value, using, handle_forward_references=False)
except Exception as e:
raise DeserializationError.WithData(e, label, self.object.pk, field_value)
setattr(self.object, field.attname, value)
self.save()
def build_instance(Model, data, db):
"""
Build a model instance.
If the model instance doesn't have a primary key and the model supports
natural keys, try to retrieve it from the database.
"""
default_manager = Model._meta.default_manager
pk = data.get(Model._meta.pk.name)
if (pk is None and hasattr(default_manager, 'get_by_natural_key') and
hasattr(Model, 'natural_key')):
natural_key = Model(**data).natural_key()
try:
data[Model._meta.pk.attname] = Model._meta.pk.to_python(
default_manager.db_manager(db).get_by_natural_key(*natural_key).pk
)
except Model.DoesNotExist:
pass
return Model(**data)
def deserialize_m2m_values(field, field_value, using, handle_forward_references):
model = field.remote_field.model
if hasattr(model._default_manager, 'get_by_natural_key'):
def m2m_convert(value):
if hasattr(value, '__iter__') and not isinstance(value, str):
return model._default_manager.db_manager(using).get_by_natural_key(*value).pk
else:
return model._meta.pk.to_python(value)
else:
def m2m_convert(v):
return model._meta.pk.to_python(v)
try:
values = []
for pk in field_value:
values.append(m2m_convert(pk))
return values
except Exception as e:
if isinstance(e, ObjectDoesNotExist) and handle_forward_references:
return DEFER_FIELD
else:
raise M2MDeserializationError(e, pk)
def deserialize_fk_value(field, field_value, using, handle_forward_references):
if field_value is None:
return None
model = field.remote_field.model
default_manager = model._default_manager
field_name = field.remote_field.field_name
if (hasattr(default_manager, 'get_by_natural_key') and
hasattr(field_value, '__iter__') and not isinstance(field_value, str)):
try:
obj = default_manager.db_manager(using).get_by_natural_key(*field_value)
except ObjectDoesNotExist:
if handle_forward_references:
return DEFER_FIELD
else:
raise
value = getattr(obj, field_name)
# If this is a natural foreign key to an object that has a FK/O2O as
# the foreign key, use the FK value.
if model._meta.pk.remote_field:
value = value.pk
return value
return model._meta.get_field(field_name).to_python(field_value)
|
5be6f2fa4b71adeb2bf45741ba9e64613990b95521811c9b0071e88618b0fe4d | """
YAML serializer.
Requires PyYaml (https://pyyaml.org/), but that's checked for in __init__.
"""
import collections
import decimal
from io import StringIO
import yaml
from django.core.serializers.base import DeserializationError
from django.core.serializers.python import (
Deserializer as PythonDeserializer, Serializer as PythonSerializer,
)
from django.db import models
# Use the C (faster) implementation if possible
try:
from yaml import CSafeLoader as SafeLoader
from yaml import CSafeDumper as SafeDumper
except ImportError:
from yaml import SafeLoader, SafeDumper
class DjangoSafeDumper(SafeDumper):
def represent_decimal(self, data):
return self.represent_scalar('tag:yaml.org,2002:str', str(data))
def represent_ordered_dict(self, data):
return self.represent_mapping('tag:yaml.org,2002:map', data.items())
DjangoSafeDumper.add_representer(decimal.Decimal, DjangoSafeDumper.represent_decimal)
DjangoSafeDumper.add_representer(collections.OrderedDict, DjangoSafeDumper.represent_ordered_dict)
# Workaround to represent dictionaries in insertion order.
# See https://github.com/yaml/pyyaml/pull/143.
DjangoSafeDumper.add_representer(dict, DjangoSafeDumper.represent_ordered_dict)
class Serializer(PythonSerializer):
"""Convert a queryset to YAML."""
internal_use_only = False
def handle_field(self, obj, field):
# A nasty special case: base YAML doesn't support serialization of time
# types (as opposed to dates or datetimes, which it does support). Since
# we want to use the "safe" serializer for better interoperability, we
# need to do something with those pesky times. Converting 'em to strings
# isn't perfect, but it's better than a "!!python/time" type which would
# halt deserialization under any other language.
if isinstance(field, models.TimeField) and getattr(obj, field.name) is not None:
self._current[field.name] = str(getattr(obj, field.name))
else:
super().handle_field(obj, field)
def end_serialization(self):
yaml.dump(self.objects, self.stream, Dumper=DjangoSafeDumper, **self.options)
def getvalue(self):
# Grandparent super
return super(PythonSerializer, self).getvalue()
def Deserializer(stream_or_string, **options):
"""Deserialize a stream or string of YAML data."""
if isinstance(stream_or_string, bytes):
stream_or_string = stream_or_string.decode()
if isinstance(stream_or_string, str):
stream = StringIO(stream_or_string)
else:
stream = stream_or_string
try:
yield from PythonDeserializer(yaml.load(stream, Loader=SafeLoader), **options)
except (GeneratorExit, DeserializationError):
raise
except Exception as exc:
raise DeserializationError() from exc
|
29cb1235c0986cea39a9bd6c35132c7b12298a0feaf1fd21e1ab0e2edf2a9c36 | """
A Python "serializer". Doesn't do much serializing per se -- just converts to
and from basic Python data types (lists, dicts, strings, etc.). Useful as a basis for
other serializers.
"""
from django.apps import apps
from django.core.serializers import base
from django.db import DEFAULT_DB_ALIAS, models
from django.utils.encoding import is_protected_type
class Serializer(base.Serializer):
"""
Serialize a QuerySet to basic Python objects.
"""
internal_use_only = True
def start_serialization(self):
self._current = None
self.objects = []
def end_serialization(self):
pass
def start_object(self, obj):
self._current = {}
def end_object(self, obj):
self.objects.append(self.get_dump_object(obj))
self._current = None
def get_dump_object(self, obj):
data = {'model': str(obj._meta)}
if not self.use_natural_primary_keys or not hasattr(obj, 'natural_key'):
data["pk"] = self._value_from_field(obj, obj._meta.pk)
data['fields'] = self._current
return data
def _value_from_field(self, obj, field):
value = field.value_from_object(obj)
# Protected types (i.e., primitives like None, numbers, dates,
# and Decimals) are passed through as is. All other values are
# converted to string first.
return value if is_protected_type(value) else field.value_to_string(obj)
def handle_field(self, obj, field):
self._current[field.name] = self._value_from_field(obj, field)
def handle_fk_field(self, obj, field):
if self.use_natural_foreign_keys and hasattr(field.remote_field.model, 'natural_key'):
related = getattr(obj, field.name)
if related:
value = related.natural_key()
else:
value = None
else:
value = self._value_from_field(obj, field)
self._current[field.name] = value
def handle_m2m_field(self, obj, field):
if field.remote_field.through._meta.auto_created:
if self.use_natural_foreign_keys and hasattr(field.remote_field.model, 'natural_key'):
def m2m_value(value):
return value.natural_key()
else:
def m2m_value(value):
return self._value_from_field(value, value._meta.pk)
self._current[field.name] = [
m2m_value(related) for related in getattr(obj, field.name).iterator()
]
def getvalue(self):
return self.objects
def Deserializer(object_list, *, using=DEFAULT_DB_ALIAS, ignorenonexistent=False, **options):
"""
Deserialize simple Python objects back into Django ORM instances.
It's expected that you pass the Python objects themselves (instead of a
stream or a string) to the constructor
"""
handle_forward_references = options.pop('handle_forward_references', False)
field_names_cache = {} # Model: <list of field_names>
for d in object_list:
# Look up the model and starting build a dict of data for it.
try:
Model = _get_model(d["model"])
except base.DeserializationError:
if ignorenonexistent:
continue
else:
raise
data = {}
if 'pk' in d:
try:
data[Model._meta.pk.attname] = Model._meta.pk.to_python(d.get('pk'))
except Exception as e:
raise base.DeserializationError.WithData(e, d['model'], d.get('pk'), None)
m2m_data = {}
deferred_fields = {}
if Model not in field_names_cache:
field_names_cache[Model] = {f.name for f in Model._meta.get_fields()}
field_names = field_names_cache[Model]
# Handle each field
for (field_name, field_value) in d["fields"].items():
if ignorenonexistent and field_name not in field_names:
# skip fields no longer on model
continue
field = Model._meta.get_field(field_name)
# Handle M2M relations
if field.remote_field and isinstance(field.remote_field, models.ManyToManyRel):
try:
values = base.deserialize_m2m_values(field, field_value, using, handle_forward_references)
except base.M2MDeserializationError as e:
raise base.DeserializationError.WithData(e.original_exc, d['model'], d.get('pk'), e.pk)
if values == base.DEFER_FIELD:
deferred_fields[field] = field_value
else:
m2m_data[field.name] = values
# Handle FK fields
elif field.remote_field and isinstance(field.remote_field, models.ManyToOneRel):
try:
value = base.deserialize_fk_value(field, field_value, using, handle_forward_references)
except Exception as e:
raise base.DeserializationError.WithData(e, d['model'], d.get('pk'), field_value)
if value == base.DEFER_FIELD:
deferred_fields[field] = field_value
else:
data[field.attname] = value
# Handle all other fields
else:
try:
data[field.name] = field.to_python(field_value)
except Exception as e:
raise base.DeserializationError.WithData(e, d['model'], d.get('pk'), field_value)
obj = base.build_instance(Model, data, using)
yield base.DeserializedObject(obj, m2m_data, deferred_fields)
def _get_model(model_identifier):
"""Look up a model from an "app_label.model_name" string."""
try:
return apps.get_model(model_identifier)
except (LookupError, TypeError):
raise base.DeserializationError("Invalid model identifier: '%s'" % model_identifier)
|
a99e680f2fc0575ea263b7f5520a9c27b81af30a00d656fd49573db2bd3a6c55 | """
XML serializer.
"""
from xml.dom import pulldom
from xml.sax import handler
from xml.sax.expatreader import ExpatParser as _ExpatParser
from django.apps import apps
from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.core.serializers import base
from django.db import DEFAULT_DB_ALIAS, models
from django.utils.xmlutils import (
SimplerXMLGenerator, UnserializableContentError,
)
class Serializer(base.Serializer):
"""Serialize a QuerySet to XML."""
def indent(self, level):
if self.options.get('indent') is not None:
self.xml.ignorableWhitespace('\n' + ' ' * self.options.get('indent') * level)
def start_serialization(self):
"""
Start serialization -- open the XML document and the root element.
"""
self.xml = SimplerXMLGenerator(self.stream, self.options.get("encoding", settings.DEFAULT_CHARSET))
self.xml.startDocument()
self.xml.startElement("django-objects", {"version": "1.0"})
def end_serialization(self):
"""
End serialization -- end the document.
"""
self.indent(0)
self.xml.endElement("django-objects")
self.xml.endDocument()
def start_object(self, obj):
"""
Called as each object is handled.
"""
if not hasattr(obj, "_meta"):
raise base.SerializationError("Non-model object (%s) encountered during serialization" % type(obj))
self.indent(1)
attrs = {'model': str(obj._meta)}
if not self.use_natural_primary_keys or not hasattr(obj, 'natural_key'):
obj_pk = obj.pk
if obj_pk is not None:
attrs['pk'] = str(obj_pk)
self.xml.startElement("object", attrs)
def end_object(self, obj):
"""
Called after handling all fields for an object.
"""
self.indent(1)
self.xml.endElement("object")
def handle_field(self, obj, field):
"""
Handle each field on an object (except for ForeignKeys and
ManyToManyFields).
"""
self.indent(2)
self.xml.startElement('field', {
'name': field.name,
'type': field.get_internal_type(),
})
# Get a "string version" of the object's data.
if getattr(obj, field.name) is not None:
try:
self.xml.characters(field.value_to_string(obj))
except UnserializableContentError:
raise ValueError("%s.%s (pk:%s) contains unserializable characters" % (
obj.__class__.__name__, field.name, obj.pk))
else:
self.xml.addQuickElement("None")
self.xml.endElement("field")
def handle_fk_field(self, obj, field):
"""
Handle a ForeignKey (they need to be treated slightly
differently from regular fields).
"""
self._start_relational_field(field)
related_att = getattr(obj, field.get_attname())
if related_att is not None:
if self.use_natural_foreign_keys and hasattr(field.remote_field.model, 'natural_key'):
related = getattr(obj, field.name)
# If related object has a natural key, use it
related = related.natural_key()
# Iterable natural keys are rolled out as subelements
for key_value in related:
self.xml.startElement("natural", {})
self.xml.characters(str(key_value))
self.xml.endElement("natural")
else:
self.xml.characters(str(related_att))
else:
self.xml.addQuickElement("None")
self.xml.endElement("field")
def handle_m2m_field(self, obj, field):
"""
Handle a ManyToManyField. Related objects are only serialized as
references to the object's PK (i.e. the related *data* is not dumped,
just the relation).
"""
if field.remote_field.through._meta.auto_created:
self._start_relational_field(field)
if self.use_natural_foreign_keys and hasattr(field.remote_field.model, 'natural_key'):
# If the objects in the m2m have a natural key, use it
def handle_m2m(value):
natural = value.natural_key()
# Iterable natural keys are rolled out as subelements
self.xml.startElement("object", {})
for key_value in natural:
self.xml.startElement("natural", {})
self.xml.characters(str(key_value))
self.xml.endElement("natural")
self.xml.endElement("object")
else:
def handle_m2m(value):
self.xml.addQuickElement("object", attrs={
'pk': str(value.pk)
})
for relobj in getattr(obj, field.name).iterator():
handle_m2m(relobj)
self.xml.endElement("field")
def _start_relational_field(self, field):
"""Output the <field> element for relational fields."""
self.indent(2)
self.xml.startElement('field', {
'name': field.name,
'rel': field.remote_field.__class__.__name__,
'to': str(field.remote_field.model._meta),
})
class Deserializer(base.Deserializer):
"""Deserialize XML."""
def __init__(self, stream_or_string, *, using=DEFAULT_DB_ALIAS, ignorenonexistent=False, **options):
super().__init__(stream_or_string, **options)
self.handle_forward_references = options.pop('handle_forward_references', False)
self.event_stream = pulldom.parse(self.stream, self._make_parser())
self.db = using
self.ignore = ignorenonexistent
def _make_parser(self):
"""Create a hardened XML parser (no custom/external entities)."""
return DefusedExpatParser()
def __next__(self):
for event, node in self.event_stream:
if event == "START_ELEMENT" and node.nodeName == "object":
self.event_stream.expandNode(node)
return self._handle_object(node)
raise StopIteration
def _handle_object(self, node):
"""Convert an <object> node to a DeserializedObject."""
# Look up the model using the model loading mechanism. If this fails,
# bail.
Model = self._get_model_from_node(node, "model")
# Start building a data dictionary from the object.
data = {}
if node.hasAttribute('pk'):
data[Model._meta.pk.attname] = Model._meta.pk.to_python(
node.getAttribute('pk'))
# Also start building a dict of m2m data (this is saved as
# {m2m_accessor_attribute : [list_of_related_objects]})
m2m_data = {}
deferred_fields = {}
field_names = {f.name for f in Model._meta.get_fields()}
# Deserialize each field.
for field_node in node.getElementsByTagName("field"):
# If the field is missing the name attribute, bail (are you
# sensing a pattern here?)
field_name = field_node.getAttribute("name")
if not field_name:
raise base.DeserializationError("<field> node is missing the 'name' attribute")
# Get the field from the Model. This will raise a
# FieldDoesNotExist if, well, the field doesn't exist, which will
# be propagated correctly unless ignorenonexistent=True is used.
if self.ignore and field_name not in field_names:
continue
field = Model._meta.get_field(field_name)
# As is usually the case, relation fields get the special treatment.
if field.remote_field and isinstance(field.remote_field, models.ManyToManyRel):
value = self._handle_m2m_field_node(field_node, field)
if value == base.DEFER_FIELD:
deferred_fields[field] = [
[
getInnerText(nat_node).strip()
for nat_node in obj_node.getElementsByTagName('natural')
]
for obj_node in field_node.getElementsByTagName('object')
]
else:
m2m_data[field.name] = value
elif field.remote_field and isinstance(field.remote_field, models.ManyToOneRel):
value = self._handle_fk_field_node(field_node, field)
if value == base.DEFER_FIELD:
deferred_fields[field] = [
getInnerText(k).strip()
for k in field_node.getElementsByTagName('natural')
]
else:
data[field.attname] = value
else:
if field_node.getElementsByTagName('None'):
value = None
else:
value = field.to_python(getInnerText(field_node).strip())
data[field.name] = value
obj = base.build_instance(Model, data, self.db)
# Return a DeserializedObject so that the m2m data has a place to live.
return base.DeserializedObject(obj, m2m_data, deferred_fields)
def _handle_fk_field_node(self, node, field):
"""
Handle a <field> node for a ForeignKey
"""
# Check if there is a child node named 'None', returning None if so.
if node.getElementsByTagName('None'):
return None
else:
model = field.remote_field.model
if hasattr(model._default_manager, 'get_by_natural_key'):
keys = node.getElementsByTagName('natural')
if keys:
# If there are 'natural' subelements, it must be a natural key
field_value = [getInnerText(k).strip() for k in keys]
try:
obj = model._default_manager.db_manager(self.db).get_by_natural_key(*field_value)
except ObjectDoesNotExist:
if self.handle_forward_references:
return base.DEFER_FIELD
else:
raise
obj_pk = getattr(obj, field.remote_field.field_name)
# If this is a natural foreign key to an object that
# has a FK/O2O as the foreign key, use the FK value
if field.remote_field.model._meta.pk.remote_field:
obj_pk = obj_pk.pk
else:
# Otherwise, treat like a normal PK
field_value = getInnerText(node).strip()
obj_pk = model._meta.get_field(field.remote_field.field_name).to_python(field_value)
return obj_pk
else:
field_value = getInnerText(node).strip()
return model._meta.get_field(field.remote_field.field_name).to_python(field_value)
def _handle_m2m_field_node(self, node, field):
"""
Handle a <field> node for a ManyToManyField.
"""
model = field.remote_field.model
default_manager = model._default_manager
if hasattr(default_manager, 'get_by_natural_key'):
def m2m_convert(n):
keys = n.getElementsByTagName('natural')
if keys:
# If there are 'natural' subelements, it must be a natural key
field_value = [getInnerText(k).strip() for k in keys]
obj_pk = default_manager.db_manager(self.db).get_by_natural_key(*field_value).pk
else:
# Otherwise, treat like a normal PK value.
obj_pk = model._meta.pk.to_python(n.getAttribute('pk'))
return obj_pk
else:
def m2m_convert(n):
return model._meta.pk.to_python(n.getAttribute('pk'))
values = []
try:
for c in node.getElementsByTagName('object'):
values.append(m2m_convert(c))
except Exception as e:
if isinstance(e, ObjectDoesNotExist) and self.handle_forward_references:
return base.DEFER_FIELD
else:
raise base.M2MDeserializationError(e, c)
else:
return values
def _get_model_from_node(self, node, attr):
"""
Look up a model from a <object model=...> or a <field rel=... to=...>
node.
"""
model_identifier = node.getAttribute(attr)
if not model_identifier:
raise base.DeserializationError(
"<%s> node is missing the required '%s' attribute"
% (node.nodeName, attr))
try:
return apps.get_model(model_identifier)
except (LookupError, TypeError):
raise base.DeserializationError(
"<%s> node has invalid model identifier: '%s'"
% (node.nodeName, model_identifier))
def getInnerText(node):
"""Get all the inner text of a DOM node (recursively)."""
# inspired by https://mail.python.org/pipermail/xml-sig/2005-March/011022.html
inner_text = []
for child in node.childNodes:
if child.nodeType == child.TEXT_NODE or child.nodeType == child.CDATA_SECTION_NODE:
inner_text.append(child.data)
elif child.nodeType == child.ELEMENT_NODE:
inner_text.extend(getInnerText(child))
else:
pass
return "".join(inner_text)
# Below code based on Christian Heimes' defusedxml
class DefusedExpatParser(_ExpatParser):
"""
An expat parser hardened against XML bomb attacks.
Forbid DTDs, external entity references
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setFeature(handler.feature_external_ges, False)
self.setFeature(handler.feature_external_pes, False)
def start_doctype_decl(self, name, sysid, pubid, has_internal_subset):
raise DTDForbidden(name, sysid, pubid)
def entity_decl(self, name, is_parameter_entity, value, base,
sysid, pubid, notation_name):
raise EntitiesForbidden(name, value, base, sysid, pubid, notation_name)
def unparsed_entity_decl(self, name, base, sysid, pubid, notation_name):
# expat 1.2
raise EntitiesForbidden(name, None, base, sysid, pubid, notation_name)
def external_entity_ref_handler(self, context, base, sysid, pubid):
raise ExternalReferenceForbidden(context, base, sysid, pubid)
def reset(self):
_ExpatParser.reset(self)
parser = self._parser
parser.StartDoctypeDeclHandler = self.start_doctype_decl
parser.EntityDeclHandler = self.entity_decl
parser.UnparsedEntityDeclHandler = self.unparsed_entity_decl
parser.ExternalEntityRefHandler = self.external_entity_ref_handler
class DefusedXmlException(ValueError):
"""Base exception."""
def __repr__(self):
return str(self)
class DTDForbidden(DefusedXmlException):
"""Document type definition is forbidden."""
def __init__(self, name, sysid, pubid):
super().__init__()
self.name = name
self.sysid = sysid
self.pubid = pubid
def __str__(self):
tpl = "DTDForbidden(name='{}', system_id={!r}, public_id={!r})"
return tpl.format(self.name, self.sysid, self.pubid)
class EntitiesForbidden(DefusedXmlException):
"""Entity definition is forbidden."""
def __init__(self, name, value, base, sysid, pubid, notation_name):
super().__init__()
self.name = name
self.value = value
self.base = base
self.sysid = sysid
self.pubid = pubid
self.notation_name = notation_name
def __str__(self):
tpl = "EntitiesForbidden(name='{}', system_id={!r}, public_id={!r})"
return tpl.format(self.name, self.sysid, self.pubid)
class ExternalReferenceForbidden(DefusedXmlException):
"""Resolving an external reference is forbidden."""
def __init__(self, context, base, sysid, pubid):
super().__init__()
self.context = context
self.base = base
self.sysid = sysid
self.pubid = pubid
def __str__(self):
tpl = "ExternalReferenceForbidden(system_id='{}', public_id={})"
return tpl.format(self.sysid, self.pubid)
|
fadbc5d129b99944c46a02cc6ae8921d0c973e6e9b6f63ace10c0fc41687024f | import re
from io import BytesIO
from django.conf import settings
from django.core import signals
from django.core.handlers import base
from django.http import HttpRequest, QueryDict, parse_cookie
from django.urls import set_script_prefix
from django.utils.encoding import repercent_broken_unicode
from django.utils.functional import cached_property
_slashes_re = re.compile(br'/+')
class LimitedStream:
"""Wrap another stream to disallow reading it past a number of bytes."""
def __init__(self, stream, limit, buf_size=64 * 1024 * 1024):
self.stream = stream
self.remaining = limit
self.buffer = b''
self.buf_size = buf_size
def _read_limited(self, size=None):
if size is None or size > self.remaining:
size = self.remaining
if size == 0:
return b''
result = self.stream.read(size)
self.remaining -= len(result)
return result
def read(self, size=None):
if size is None:
result = self.buffer + self._read_limited()
self.buffer = b''
elif size < len(self.buffer):
result = self.buffer[:size]
self.buffer = self.buffer[size:]
else: # size >= len(self.buffer)
result = self.buffer + self._read_limited(size - len(self.buffer))
self.buffer = b''
return result
def readline(self, size=None):
while b'\n' not in self.buffer and \
(size is None or len(self.buffer) < size):
if size:
# since size is not None here, len(self.buffer) < size
chunk = self._read_limited(size - len(self.buffer))
else:
chunk = self._read_limited()
if not chunk:
break
self.buffer += chunk
sio = BytesIO(self.buffer)
if size:
line = sio.readline(size)
else:
line = sio.readline()
self.buffer = sio.read()
return line
class WSGIRequest(HttpRequest):
def __init__(self, environ):
script_name = get_script_name(environ)
# If PATH_INFO is empty (e.g. accessing the SCRIPT_NAME URL without a
# trailing slash), operate as if '/' was requested.
path_info = get_path_info(environ) or '/'
self.environ = environ
self.path_info = path_info
# be careful to only replace the first slash in the path because of
# http://test/something and http://test//something being different as
# stated in https://www.ietf.org/rfc/rfc2396.txt
self.path = '%s/%s' % (script_name.rstrip('/'),
path_info.replace('/', '', 1))
self.META = environ
self.META['PATH_INFO'] = path_info
self.META['SCRIPT_NAME'] = script_name
self.method = environ['REQUEST_METHOD'].upper()
# Set content_type, content_params, and encoding.
self._set_content_type_params(environ)
try:
content_length = int(environ.get('CONTENT_LENGTH'))
except (ValueError, TypeError):
content_length = 0
self._stream = LimitedStream(self.environ['wsgi.input'], content_length)
self._read_started = False
self.resolver_match = None
def _get_scheme(self):
return self.environ.get('wsgi.url_scheme')
@cached_property
def GET(self):
# The WSGI spec says 'QUERY_STRING' may be absent.
raw_query_string = get_bytes_from_wsgi(self.environ, 'QUERY_STRING', '')
return QueryDict(raw_query_string, encoding=self._encoding)
def _get_post(self):
if not hasattr(self, '_post'):
self._load_post_and_files()
return self._post
def _set_post(self, post):
self._post = post
@cached_property
def COOKIES(self):
raw_cookie = get_str_from_wsgi(self.environ, 'HTTP_COOKIE', '')
return parse_cookie(raw_cookie)
@property
def FILES(self):
if not hasattr(self, '_files'):
self._load_post_and_files()
return self._files
POST = property(_get_post, _set_post)
class WSGIHandler(base.BaseHandler):
request_class = WSGIRequest
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.load_middleware()
def __call__(self, environ, start_response):
set_script_prefix(get_script_name(environ))
signals.request_started.send(sender=self.__class__, environ=environ)
request = self.request_class(environ)
response = self.get_response(request)
response._handler_class = self.__class__
status = '%d %s' % (response.status_code, response.reason_phrase)
response_headers = [
*response.items(),
*(('Set-Cookie', c.output(header='')) for c in response.cookies.values()),
]
start_response(status, response_headers)
if getattr(response, 'file_to_stream', None) is not None and environ.get('wsgi.file_wrapper'):
response = environ['wsgi.file_wrapper'](response.file_to_stream)
return response
def get_path_info(environ):
"""Return the HTTP request's PATH_INFO as a string."""
path_info = get_bytes_from_wsgi(environ, 'PATH_INFO', '/')
return repercent_broken_unicode(path_info).decode()
def get_script_name(environ):
"""
Return the equivalent of the HTTP request's SCRIPT_NAME environment
variable. If Apache mod_rewrite is used, return what would have been
the script name prior to any rewriting (so it's the script name as seen
from the client's perspective), unless the FORCE_SCRIPT_NAME setting is
set (to anything).
"""
if settings.FORCE_SCRIPT_NAME is not None:
return settings.FORCE_SCRIPT_NAME
# If Apache's mod_rewrite had a whack at the URL, Apache set either
# SCRIPT_URL or REDIRECT_URL to the full resource URL before applying any
# rewrites. Unfortunately not every Web server (lighttpd!) passes this
# information through all the time, so FORCE_SCRIPT_NAME, above, is still
# needed.
script_url = get_bytes_from_wsgi(environ, 'SCRIPT_URL', '') or get_bytes_from_wsgi(environ, 'REDIRECT_URL', '')
if script_url:
if b'//' in script_url:
# mod_wsgi squashes multiple successive slashes in PATH_INFO,
# do the same with script_url before manipulating paths (#17133).
script_url = _slashes_re.sub(b'/', script_url)
path_info = get_bytes_from_wsgi(environ, 'PATH_INFO', '')
script_name = script_url[:-len(path_info)] if path_info else script_url
else:
script_name = get_bytes_from_wsgi(environ, 'SCRIPT_NAME', '')
return script_name.decode()
def get_bytes_from_wsgi(environ, key, default):
"""
Get a value from the WSGI environ dictionary as bytes.
key and default should be strings.
"""
value = environ.get(key, default)
# Non-ASCII values in the WSGI environ are arbitrarily decoded with
# ISO-8859-1. This is wrong for Django websites where UTF-8 is the default.
# Re-encode to recover the original bytestring.
return value.encode('iso-8859-1')
def get_str_from_wsgi(environ, key, default):
"""
Get a value from the WSGI environ dictionary as str.
key and default should be str objects.
"""
value = get_bytes_from_wsgi(environ, key, default)
return value.decode(errors='replace')
|
7b012cb80b87103dec5751b875847b1ba6ed28925a188cf9ec56e44d1cceb584 | import logging
import sys
from functools import wraps
from django.conf import settings
from django.core import signals
from django.core.exceptions import (
PermissionDenied, RequestDataTooBig, SuspiciousOperation,
TooManyFieldsSent,
)
from django.http import Http404
from django.http.multipartparser import MultiPartParserError
from django.urls import get_resolver, get_urlconf
from django.utils.log import log_response
from django.views import debug
def convert_exception_to_response(get_response):
"""
Wrap the given get_response callable in exception-to-response conversion.
All exceptions will be converted. All known 4xx exceptions (Http404,
PermissionDenied, MultiPartParserError, SuspiciousOperation) will be
converted to the appropriate response, and all other exceptions will be
converted to 500 responses.
This decorator is automatically applied to all middleware to ensure that
no middleware leaks an exception and that the next middleware in the stack
can rely on getting a response instead of an exception.
"""
@wraps(get_response)
def inner(request):
try:
response = get_response(request)
except Exception as exc:
response = response_for_exception(request, exc)
return response
return inner
def response_for_exception(request, exc):
if isinstance(exc, Http404):
if settings.DEBUG:
response = debug.technical_404_response(request, exc)
else:
response = get_exception_response(request, get_resolver(get_urlconf()), 404, exc)
elif isinstance(exc, PermissionDenied):
response = get_exception_response(request, get_resolver(get_urlconf()), 403, exc)
log_response(
'Forbidden (Permission denied): %s', request.path,
response=response,
request=request,
exc_info=sys.exc_info(),
)
elif isinstance(exc, MultiPartParserError):
response = get_exception_response(request, get_resolver(get_urlconf()), 400, exc)
log_response(
'Bad request (Unable to parse request body): %s', request.path,
response=response,
request=request,
exc_info=sys.exc_info(),
)
elif isinstance(exc, SuspiciousOperation):
if isinstance(exc, (RequestDataTooBig, TooManyFieldsSent)):
# POST data can't be accessed again, otherwise the original
# exception would be raised.
request._mark_post_parse_error()
# The request logger receives events for any problematic request
# The security logger receives events for all SuspiciousOperations
security_logger = logging.getLogger('django.security.%s' % exc.__class__.__name__)
security_logger.error(
str(exc),
extra={'status_code': 400, 'request': request},
)
if settings.DEBUG:
response = debug.technical_500_response(request, *sys.exc_info(), status_code=400)
else:
response = get_exception_response(request, get_resolver(get_urlconf()), 400, exc)
elif isinstance(exc, SystemExit):
# Allow sys.exit() to actually exit. See tickets #1023 and #4701
raise
else:
signals.got_request_exception.send(sender=None, request=request)
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
log_response(
'%s: %s', response.reason_phrase, request.path,
response=response,
request=request,
exc_info=sys.exc_info(),
)
# Force a TemplateResponse to be rendered.
if not getattr(response, 'is_rendered', True) and callable(getattr(response, 'render', None)):
response = response.render()
return response
def get_exception_response(request, resolver, status_code, exception):
try:
callback, param_dict = resolver.resolve_error_handler(status_code)
response = callback(request, **{**param_dict, 'exception': exception})
except Exception:
signals.got_request_exception.send(sender=None, request=request)
response = handle_uncaught_exception(request, resolver, sys.exc_info())
return response
def handle_uncaught_exception(request, resolver, exc_info):
"""
Processing for any otherwise uncaught exceptions (those that will
generate HTTP 500 responses).
"""
if settings.DEBUG_PROPAGATE_EXCEPTIONS:
raise
if settings.DEBUG:
return debug.technical_500_response(request, *exc_info)
# Return an HttpResponse that displays a friendly error message.
callback, param_dict = resolver.resolve_error_handler(500)
return callback(request, **param_dict)
|
b0d335ba6ee12e6c898db7800279a4d2f6c43eea88675be900552189f75cf8cd | import logging
import types
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured, MiddlewareNotUsed
from django.core.signals import request_finished
from django.db import connections, transaction
from django.urls import get_resolver, set_urlconf
from django.utils.log import log_response
from django.utils.module_loading import import_string
from .exception import convert_exception_to_response
logger = logging.getLogger('django.request')
class BaseHandler:
_view_middleware = None
_template_response_middleware = None
_exception_middleware = None
_middleware_chain = None
def load_middleware(self):
"""
Populate middleware lists from settings.MIDDLEWARE.
Must be called after the environment is fixed (see __call__ in subclasses).
"""
self._view_middleware = []
self._template_response_middleware = []
self._exception_middleware = []
handler = convert_exception_to_response(self._get_response)
for middleware_path in reversed(settings.MIDDLEWARE):
middleware = import_string(middleware_path)
try:
mw_instance = middleware(handler)
except MiddlewareNotUsed as exc:
if settings.DEBUG:
if str(exc):
logger.debug('MiddlewareNotUsed(%r): %s', middleware_path, exc)
else:
logger.debug('MiddlewareNotUsed: %r', middleware_path)
continue
if mw_instance is None:
raise ImproperlyConfigured(
'Middleware factory %s returned None.' % middleware_path
)
if hasattr(mw_instance, 'process_view'):
self._view_middleware.insert(0, mw_instance.process_view)
if hasattr(mw_instance, 'process_template_response'):
self._template_response_middleware.append(mw_instance.process_template_response)
if hasattr(mw_instance, 'process_exception'):
self._exception_middleware.append(mw_instance.process_exception)
handler = convert_exception_to_response(mw_instance)
# We only assign to this when initialization is complete as it is used
# as a flag for initialization being complete.
self._middleware_chain = handler
def make_view_atomic(self, view):
non_atomic_requests = getattr(view, '_non_atomic_requests', set())
for db in connections.all():
if db.settings_dict['ATOMIC_REQUESTS'] and db.alias not in non_atomic_requests:
view = transaction.atomic(using=db.alias)(view)
return view
def get_response(self, request):
"""Return an HttpResponse object for the given HttpRequest."""
# Setup default url resolver for this thread
set_urlconf(settings.ROOT_URLCONF)
response = self._middleware_chain(request)
response._closable_objects.append(request)
if response.status_code >= 400:
log_response(
'%s: %s', response.reason_phrase, request.path,
response=response,
request=request,
)
return response
def _get_response(self, request):
"""
Resolve and call the view, then apply view, exception, and
template_response middleware. This method is everything that happens
inside the request/response middleware.
"""
response = None
if hasattr(request, 'urlconf'):
urlconf = request.urlconf
set_urlconf(urlconf)
resolver = get_resolver(urlconf)
else:
resolver = get_resolver()
resolver_match = resolver.resolve(request.path_info)
callback, callback_args, callback_kwargs = resolver_match
request.resolver_match = resolver_match
# Apply view middleware
for middleware_method in self._view_middleware:
response = middleware_method(request, callback, callback_args, callback_kwargs)
if response:
break
if response is None:
wrapped_callback = self.make_view_atomic(callback)
try:
response = wrapped_callback(request, *callback_args, **callback_kwargs)
except Exception as e:
response = self.process_exception_by_middleware(e, request)
# Complain if the view returned None (a common error).
if response is None:
if isinstance(callback, types.FunctionType): # FBV
view_name = callback.__name__
else: # CBV
view_name = callback.__class__.__name__ + '.__call__'
raise ValueError(
"The view %s.%s didn't return an HttpResponse object. It "
"returned None instead." % (callback.__module__, view_name)
)
# If the response supports deferred rendering, apply template
# response middleware and then render the response
elif hasattr(response, 'render') and callable(response.render):
for middleware_method in self._template_response_middleware:
response = middleware_method(request, response)
# Complain if the template response middleware returned None (a common error).
if response is None:
raise ValueError(
"%s.process_template_response didn't return an "
"HttpResponse object. It returned None instead."
% (middleware_method.__self__.__class__.__name__)
)
try:
response = response.render()
except Exception as e:
response = self.process_exception_by_middleware(e, request)
return response
def process_exception_by_middleware(self, exception, request):
"""
Pass the exception to the exception middleware. If no middleware
return a response for this exception, raise it.
"""
for middleware_method in self._exception_middleware:
response = middleware_method(request, exception)
if response:
return response
raise
def reset_urlconf(sender, **kwargs):
"""Reset the URLconf after each request is finished."""
set_urlconf(None)
request_finished.connect(reset_urlconf)
|
dd20d90cb516ee43b3ea142afa8f32338e5df103a1858914d666d43aa3f6a71f | import mimetypes
from email import (
charset as Charset, encoders as Encoders, generator, message_from_string,
)
from email.errors import HeaderParseError
from email.header import Header
from email.headerregistry import Address, parser
from email.message import Message
from email.mime.base import MIMEBase
from email.mime.message import MIMEMessage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import formatdate, getaddresses, make_msgid
from io import BytesIO, StringIO
from pathlib import Path
from django.conf import settings
from django.core.mail.utils import DNS_NAME
from django.utils.encoding import force_str
# Don't BASE64-encode UTF-8 messages so that we avoid unwanted attention from
# some spam filters.
utf8_charset = Charset.Charset('utf-8')
utf8_charset.body_encoding = None # Python defaults to BASE64
utf8_charset_qp = Charset.Charset('utf-8')
utf8_charset_qp.body_encoding = Charset.QP
# Default MIME type to use on attachments (if it is not explicitly given
# and cannot be guessed).
DEFAULT_ATTACHMENT_MIME_TYPE = 'application/octet-stream'
RFC5322_EMAIL_LINE_LENGTH_LIMIT = 998
class BadHeaderError(ValueError):
pass
# Header names that contain structured address data (RFC #5322)
ADDRESS_HEADERS = {
'from',
'sender',
'reply-to',
'to',
'cc',
'bcc',
'resent-from',
'resent-sender',
'resent-to',
'resent-cc',
'resent-bcc',
}
def forbid_multi_line_headers(name, val, encoding):
"""Forbid multi-line headers to prevent header injection."""
encoding = encoding or settings.DEFAULT_CHARSET
val = str(val) # val may be lazy
if '\n' in val or '\r' in val:
raise BadHeaderError("Header values can't contain newlines (got %r for header %r)" % (val, name))
try:
val.encode('ascii')
except UnicodeEncodeError:
if name.lower() in ADDRESS_HEADERS:
val = ', '.join(sanitize_address(addr, encoding) for addr in getaddresses((val,)))
else:
val = Header(val, encoding).encode()
else:
if name.lower() == 'subject':
val = Header(val).encode()
return name, val
def sanitize_address(addr, encoding):
"""
Format a pair of (name, address) or an email address string.
"""
address = None
if not isinstance(addr, tuple):
addr = force_str(addr)
try:
token, rest = parser.get_mailbox(addr)
except (HeaderParseError, ValueError, IndexError):
raise ValueError('Invalid address "%s"' % addr)
else:
if rest:
# The entire email address must be parsed.
raise ValueError(
'Invalid adddress; only %s could be parsed from "%s"'
% (token, addr)
)
nm = token.display_name or ''
localpart = token.local_part
domain = token.domain or ''
else:
nm, address = addr
localpart, domain = address.rsplit('@', 1)
nm = Header(nm, encoding).encode()
# Avoid UTF-8 encode, if it's possible.
try:
localpart.encode('ascii')
except UnicodeEncodeError:
localpart = Header(localpart, encoding).encode()
try:
domain.encode('ascii')
except UnicodeEncodeError:
domain = domain.encode('idna').decode('ascii')
parsed_address = Address(nm, username=localpart, domain=domain)
return str(parsed_address)
class MIMEMixin:
def as_string(self, unixfrom=False, linesep='\n'):
"""Return the entire formatted message as a string.
Optional `unixfrom' when True, means include the Unix From_ envelope
header.
This overrides the default as_string() implementation to not mangle
lines that begin with 'From '. See bug #13433 for details.
"""
fp = StringIO()
g = generator.Generator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom, linesep=linesep)
return fp.getvalue()
def as_bytes(self, unixfrom=False, linesep='\n'):
"""Return the entire formatted message as bytes.
Optional `unixfrom' when True, means include the Unix From_ envelope
header.
This overrides the default as_bytes() implementation to not mangle
lines that begin with 'From '. See bug #13433 for details.
"""
fp = BytesIO()
g = generator.BytesGenerator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom, linesep=linesep)
return fp.getvalue()
class SafeMIMEMessage(MIMEMixin, MIMEMessage):
def __setitem__(self, name, val):
# message/rfc822 attachments must be ASCII
name, val = forbid_multi_line_headers(name, val, 'ascii')
MIMEMessage.__setitem__(self, name, val)
class SafeMIMEText(MIMEMixin, MIMEText):
def __init__(self, _text, _subtype='plain', _charset=None):
self.encoding = _charset
MIMEText.__init__(self, _text, _subtype=_subtype, _charset=_charset)
def __setitem__(self, name, val):
name, val = forbid_multi_line_headers(name, val, self.encoding)
MIMEText.__setitem__(self, name, val)
def set_payload(self, payload, charset=None):
if charset == 'utf-8' and not isinstance(charset, Charset.Charset):
has_long_lines = any(
len(l.encode()) > RFC5322_EMAIL_LINE_LENGTH_LIMIT
for l in payload.splitlines()
)
# Quoted-Printable encoding has the side effect of shortening long
# lines, if any (#22561).
charset = utf8_charset_qp if has_long_lines else utf8_charset
MIMEText.set_payload(self, payload, charset=charset)
class SafeMIMEMultipart(MIMEMixin, MIMEMultipart):
def __init__(self, _subtype='mixed', boundary=None, _subparts=None, encoding=None, **_params):
self.encoding = encoding
MIMEMultipart.__init__(self, _subtype, boundary, _subparts, **_params)
def __setitem__(self, name, val):
name, val = forbid_multi_line_headers(name, val, self.encoding)
MIMEMultipart.__setitem__(self, name, val)
class EmailMessage:
"""A container for email information."""
content_subtype = 'plain'
mixed_subtype = 'mixed'
encoding = None # None => use settings default
def __init__(self, subject='', body='', from_email=None, to=None, bcc=None,
connection=None, attachments=None, headers=None, cc=None,
reply_to=None):
"""
Initialize a single email message (which can be sent to multiple
recipients).
"""
if to:
if isinstance(to, str):
raise TypeError('"to" argument must be a list or tuple')
self.to = list(to)
else:
self.to = []
if cc:
if isinstance(cc, str):
raise TypeError('"cc" argument must be a list or tuple')
self.cc = list(cc)
else:
self.cc = []
if bcc:
if isinstance(bcc, str):
raise TypeError('"bcc" argument must be a list or tuple')
self.bcc = list(bcc)
else:
self.bcc = []
if reply_to:
if isinstance(reply_to, str):
raise TypeError('"reply_to" argument must be a list or tuple')
self.reply_to = list(reply_to)
else:
self.reply_to = []
self.from_email = from_email or settings.DEFAULT_FROM_EMAIL
self.subject = subject
self.body = body or ''
self.attachments = []
if attachments:
for attachment in attachments:
if isinstance(attachment, MIMEBase):
self.attach(attachment)
else:
self.attach(*attachment)
self.extra_headers = headers or {}
self.connection = connection
def get_connection(self, fail_silently=False):
from django.core.mail import get_connection
if not self.connection:
self.connection = get_connection(fail_silently=fail_silently)
return self.connection
def message(self):
encoding = self.encoding or settings.DEFAULT_CHARSET
msg = SafeMIMEText(self.body, self.content_subtype, encoding)
msg = self._create_message(msg)
msg['Subject'] = self.subject
msg['From'] = self.extra_headers.get('From', self.from_email)
self._set_list_header_if_not_empty(msg, 'To', self.to)
self._set_list_header_if_not_empty(msg, 'Cc', self.cc)
self._set_list_header_if_not_empty(msg, 'Reply-To', self.reply_to)
# Email header names are case-insensitive (RFC 2045), so we have to
# accommodate that when doing comparisons.
header_names = [key.lower() for key in self.extra_headers]
if 'date' not in header_names:
# formatdate() uses stdlib methods to format the date, which use
# the stdlib/OS concept of a timezone, however, Django sets the
# TZ environment variable based on the TIME_ZONE setting which
# will get picked up by formatdate().
msg['Date'] = formatdate(localtime=settings.EMAIL_USE_LOCALTIME)
if 'message-id' not in header_names:
# Use cached DNS_NAME for performance
msg['Message-ID'] = make_msgid(domain=DNS_NAME)
for name, value in self.extra_headers.items():
if name.lower() != 'from': # From is already handled
msg[name] = value
return msg
def recipients(self):
"""
Return a list of all recipients of the email (includes direct
addressees as well as Cc and Bcc entries).
"""
return [email for email in (self.to + self.cc + self.bcc) if email]
def send(self, fail_silently=False):
"""Send the email message."""
if not self.recipients():
# Don't bother creating the network connection if there's nobody to
# send to.
return 0
return self.get_connection(fail_silently).send_messages([self])
def attach(self, filename=None, content=None, mimetype=None):
"""
Attach a file with the given filename and content. The filename can
be omitted and the mimetype is guessed, if not provided.
If the first parameter is a MIMEBase subclass, insert it directly
into the resulting message attachments.
For a text/* mimetype (guessed or specified), when a bytes object is
specified as content, decode it as UTF-8. If that fails, set the
mimetype to DEFAULT_ATTACHMENT_MIME_TYPE and don't decode the content.
"""
if isinstance(filename, MIMEBase):
assert content is None
assert mimetype is None
self.attachments.append(filename)
else:
assert content is not None
mimetype = mimetype or mimetypes.guess_type(filename)[0] or DEFAULT_ATTACHMENT_MIME_TYPE
basetype, subtype = mimetype.split('/', 1)
if basetype == 'text':
if isinstance(content, bytes):
try:
content = content.decode()
except UnicodeDecodeError:
# If mimetype suggests the file is text but it's
# actually binary, read() raises a UnicodeDecodeError.
mimetype = DEFAULT_ATTACHMENT_MIME_TYPE
self.attachments.append((filename, content, mimetype))
def attach_file(self, path, mimetype=None):
"""
Attach a file from the filesystem.
Set the mimetype to DEFAULT_ATTACHMENT_MIME_TYPE if it isn't specified
and cannot be guessed.
For a text/* mimetype (guessed or specified), decode the file's content
as UTF-8. If that fails, set the mimetype to
DEFAULT_ATTACHMENT_MIME_TYPE and don't decode the content.
"""
path = Path(path)
with path.open('rb') as file:
content = file.read()
self.attach(path.name, content, mimetype)
def _create_message(self, msg):
return self._create_attachments(msg)
def _create_attachments(self, msg):
if self.attachments:
encoding = self.encoding or settings.DEFAULT_CHARSET
body_msg = msg
msg = SafeMIMEMultipart(_subtype=self.mixed_subtype, encoding=encoding)
if self.body or body_msg.is_multipart():
msg.attach(body_msg)
for attachment in self.attachments:
if isinstance(attachment, MIMEBase):
msg.attach(attachment)
else:
msg.attach(self._create_attachment(*attachment))
return msg
def _create_mime_attachment(self, content, mimetype):
"""
Convert the content, mimetype pair into a MIME attachment object.
If the mimetype is message/rfc822, content may be an
email.Message or EmailMessage object, as well as a str.
"""
basetype, subtype = mimetype.split('/', 1)
if basetype == 'text':
encoding = self.encoding or settings.DEFAULT_CHARSET
attachment = SafeMIMEText(content, subtype, encoding)
elif basetype == 'message' and subtype == 'rfc822':
# Bug #18967: per RFC2046 s5.2.1, message/rfc822 attachments
# must not be base64 encoded.
if isinstance(content, EmailMessage):
# convert content into an email.Message first
content = content.message()
elif not isinstance(content, Message):
# For compatibility with existing code, parse the message
# into an email.Message object if it is not one already.
content = message_from_string(force_str(content))
attachment = SafeMIMEMessage(content, subtype)
else:
# Encode non-text attachments with base64.
attachment = MIMEBase(basetype, subtype)
attachment.set_payload(content)
Encoders.encode_base64(attachment)
return attachment
def _create_attachment(self, filename, content, mimetype=None):
"""
Convert the filename, content, mimetype triple into a MIME attachment
object.
"""
attachment = self._create_mime_attachment(content, mimetype)
if filename:
try:
filename.encode('ascii')
except UnicodeEncodeError:
filename = ('utf-8', '', filename)
attachment.add_header('Content-Disposition', 'attachment', filename=filename)
return attachment
def _set_list_header_if_not_empty(self, msg, header, values):
"""
Set msg's header, either from self.extra_headers, if present, or from
the values argument.
"""
if values:
try:
value = self.extra_headers[header]
except KeyError:
value = ', '.join(str(v) for v in values)
msg[header] = value
class EmailMultiAlternatives(EmailMessage):
"""
A version of EmailMessage that makes it easy to send multipart/alternative
messages. For example, including text and HTML versions of the text is
made easier.
"""
alternative_subtype = 'alternative'
def __init__(self, subject='', body='', from_email=None, to=None, bcc=None,
connection=None, attachments=None, headers=None, alternatives=None,
cc=None, reply_to=None):
"""
Initialize a single email message (which can be sent to multiple
recipients).
"""
super().__init__(
subject, body, from_email, to, bcc, connection, attachments,
headers, cc, reply_to,
)
self.alternatives = alternatives or []
def attach_alternative(self, content, mimetype):
"""Attach an alternative content representation."""
assert content is not None
assert mimetype is not None
self.alternatives.append((content, mimetype))
def _create_message(self, msg):
return self._create_attachments(self._create_alternatives(msg))
def _create_alternatives(self, msg):
encoding = self.encoding or settings.DEFAULT_CHARSET
if self.alternatives:
body_msg = msg
msg = SafeMIMEMultipart(_subtype=self.alternative_subtype, encoding=encoding)
if self.body:
msg.attach(body_msg)
for alternative in self.alternatives:
msg.attach(self._create_mime_attachment(*alternative))
return msg
|
7c472c7be120f16f8dacb3e42212b1e83093a0be3afbb05e26d32b15ded3833c | from django.conf import settings
from .. import Tags, Warning, register
SECRET_KEY_MIN_LENGTH = 50
SECRET_KEY_MIN_UNIQUE_CHARACTERS = 5
W001 = Warning(
"You do not have 'django.middleware.security.SecurityMiddleware' "
"in your MIDDLEWARE so the SECURE_HSTS_SECONDS, "
"SECURE_CONTENT_TYPE_NOSNIFF, "
"SECURE_BROWSER_XSS_FILTER, and SECURE_SSL_REDIRECT settings "
"will have no effect.",
id='security.W001',
)
W002 = Warning(
"You do not have "
"'django.middleware.clickjacking.XFrameOptionsMiddleware' in your "
"MIDDLEWARE, so your pages will not be served with an "
"'x-frame-options' header. Unless there is a good reason for your "
"site to be served in a frame, you should consider enabling this "
"header to help prevent clickjacking attacks.",
id='security.W002',
)
W004 = Warning(
"You have not set a value for the SECURE_HSTS_SECONDS setting. "
"If your entire site is served only over SSL, you may want to consider "
"setting a value and enabling HTTP Strict Transport Security. "
"Be sure to read the documentation first; enabling HSTS carelessly "
"can cause serious, irreversible problems.",
id='security.W004',
)
W005 = Warning(
"You have not set the SECURE_HSTS_INCLUDE_SUBDOMAINS setting to True. "
"Without this, your site is potentially vulnerable to attack "
"via an insecure connection to a subdomain. Only set this to True if "
"you are certain that all subdomains of your domain should be served "
"exclusively via SSL.",
id='security.W005',
)
W006 = Warning(
"Your SECURE_CONTENT_TYPE_NOSNIFF setting is not set to True, "
"so your pages will not be served with an "
"'X-Content-Type-Options: nosniff' header. "
"You should consider enabling this header to prevent the "
"browser from identifying content types incorrectly.",
id='security.W006',
)
W007 = Warning(
"Your SECURE_BROWSER_XSS_FILTER setting is not set to True, "
"so your pages will not be served with an "
"'X-XSS-Protection: 1; mode=block' header. "
"You should consider enabling this header to activate the "
"browser's XSS filtering and help prevent XSS attacks.",
id='security.W007',
)
W008 = Warning(
"Your SECURE_SSL_REDIRECT setting is not set to True. "
"Unless your site should be available over both SSL and non-SSL "
"connections, you may want to either set this setting True "
"or configure a load balancer or reverse-proxy server "
"to redirect all connections to HTTPS.",
id='security.W008',
)
W009 = Warning(
"Your SECRET_KEY has less than %(min_length)s characters or less than "
"%(min_unique_chars)s unique characters. Please generate a long and random "
"SECRET_KEY, otherwise many of Django's security-critical features will be "
"vulnerable to attack." % {
'min_length': SECRET_KEY_MIN_LENGTH,
'min_unique_chars': SECRET_KEY_MIN_UNIQUE_CHARACTERS,
},
id='security.W009',
)
W018 = Warning(
"You should not have DEBUG set to True in deployment.",
id='security.W018',
)
W019 = Warning(
"You have "
"'django.middleware.clickjacking.XFrameOptionsMiddleware' in your "
"MIDDLEWARE, but X_FRAME_OPTIONS is not set to 'DENY'. "
"The default is 'SAMEORIGIN', but unless there is a good reason for "
"your site to serve other parts of itself in a frame, you should "
"change it to 'DENY'.",
id='security.W019',
)
W020 = Warning(
"ALLOWED_HOSTS must not be empty in deployment.",
id='security.W020',
)
W021 = Warning(
"You have not set the SECURE_HSTS_PRELOAD setting to True. Without this, "
"your site cannot be submitted to the browser preload list.",
id='security.W021',
)
def _security_middleware():
return 'django.middleware.security.SecurityMiddleware' in settings.MIDDLEWARE
def _xframe_middleware():
return 'django.middleware.clickjacking.XFrameOptionsMiddleware' in settings.MIDDLEWARE
@register(Tags.security, deploy=True)
def check_security_middleware(app_configs, **kwargs):
passed_check = _security_middleware()
return [] if passed_check else [W001]
@register(Tags.security, deploy=True)
def check_xframe_options_middleware(app_configs, **kwargs):
passed_check = _xframe_middleware()
return [] if passed_check else [W002]
@register(Tags.security, deploy=True)
def check_sts(app_configs, **kwargs):
passed_check = not _security_middleware() or settings.SECURE_HSTS_SECONDS
return [] if passed_check else [W004]
@register(Tags.security, deploy=True)
def check_sts_include_subdomains(app_configs, **kwargs):
passed_check = (
not _security_middleware() or
not settings.SECURE_HSTS_SECONDS or
settings.SECURE_HSTS_INCLUDE_SUBDOMAINS is True
)
return [] if passed_check else [W005]
@register(Tags.security, deploy=True)
def check_sts_preload(app_configs, **kwargs):
passed_check = (
not _security_middleware() or
not settings.SECURE_HSTS_SECONDS or
settings.SECURE_HSTS_PRELOAD is True
)
return [] if passed_check else [W021]
@register(Tags.security, deploy=True)
def check_content_type_nosniff(app_configs, **kwargs):
passed_check = (
not _security_middleware() or
settings.SECURE_CONTENT_TYPE_NOSNIFF is True
)
return [] if passed_check else [W006]
@register(Tags.security, deploy=True)
def check_xss_filter(app_configs, **kwargs):
passed_check = (
not _security_middleware() or
settings.SECURE_BROWSER_XSS_FILTER is True
)
return [] if passed_check else [W007]
@register(Tags.security, deploy=True)
def check_ssl_redirect(app_configs, **kwargs):
passed_check = (
not _security_middleware() or
settings.SECURE_SSL_REDIRECT is True
)
return [] if passed_check else [W008]
@register(Tags.security, deploy=True)
def check_secret_key(app_configs, **kwargs):
passed_check = (
getattr(settings, 'SECRET_KEY', None) and
len(set(settings.SECRET_KEY)) >= SECRET_KEY_MIN_UNIQUE_CHARACTERS and
len(settings.SECRET_KEY) >= SECRET_KEY_MIN_LENGTH
)
return [] if passed_check else [W009]
@register(Tags.security, deploy=True)
def check_debug(app_configs, **kwargs):
passed_check = not settings.DEBUG
return [] if passed_check else [W018]
@register(Tags.security, deploy=True)
def check_xframe_deny(app_configs, **kwargs):
passed_check = (
not _xframe_middleware() or
settings.X_FRAME_OPTIONS == 'DENY'
)
return [] if passed_check else [W019]
@register(Tags.security, deploy=True)
def check_allowed_hosts(app_configs, **kwargs):
return [] if settings.ALLOWED_HOSTS else [W020]
|
1fa91abbf73f00e50b5b18ce3305f795c3bfe707ae799a6a41701ac23bc24479 | import time
from importlib import import_module
from django.apps import apps
from django.core.checks import Tags, run_checks
from django.core.management.base import (
BaseCommand, CommandError, no_translations,
)
from django.core.management.sql import (
emit_post_migrate_signal, emit_pre_migrate_signal,
)
from django.db import DEFAULT_DB_ALIAS, connections, router
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.executor import MigrationExecutor
from django.db.migrations.loader import AmbiguityError
from django.db.migrations.state import ModelState, ProjectState
from django.utils.module_loading import module_has_submodule
from django.utils.text import Truncator
class Command(BaseCommand):
help = "Updates database schema. Manages both apps with migrations and those without."
def add_arguments(self, parser):
parser.add_argument(
'app_label', nargs='?',
help='App label of an application to synchronize the state.',
)
parser.add_argument(
'migration_name', nargs='?',
help='Database state will be brought to the state after that '
'migration. Use the name "zero" to unapply all migrations.',
)
parser.add_argument(
'--noinput', '--no-input', action='store_false', dest='interactive',
help='Tells Django to NOT prompt the user for input of any kind.',
)
parser.add_argument(
'--database',
default=DEFAULT_DB_ALIAS,
help='Nominates a database to synchronize. Defaults to the "default" database.',
)
parser.add_argument(
'--fake', action='store_true',
help='Mark migrations as run without actually running them.',
)
parser.add_argument(
'--fake-initial', action='store_true',
help='Detect if tables already exist and fake-apply initial migrations if so. Make sure '
'that the current database schema matches your initial migration before using this '
'flag. Django will only check for an existing table name.',
)
parser.add_argument(
'--plan', action='store_true',
help='Shows a list of the migration actions that will be performed.',
)
parser.add_argument(
'--run-syncdb', action='store_true',
help='Creates tables for apps without migrations.',
)
def _run_checks(self, **kwargs):
issues = run_checks(tags=[Tags.database])
issues.extend(super()._run_checks(**kwargs))
return issues
@no_translations
def handle(self, *args, **options):
self.verbosity = options['verbosity']
self.interactive = options['interactive']
# Import the 'management' module within each installed app, to register
# dispatcher events.
for app_config in apps.get_app_configs():
if module_has_submodule(app_config.module, "management"):
import_module('.management', app_config.name)
# Get the database we're operating from
db = options['database']
connection = connections[db]
# Hook for backends needing any database preparation
connection.prepare_database()
# Work out which apps have migrations and which do not
executor = MigrationExecutor(connection, self.migration_progress_callback)
# Raise an error if any migrations are applied before their dependencies.
executor.loader.check_consistent_history(connection)
# Before anything else, see if there's conflicting apps and drop out
# hard if there are any
conflicts = executor.loader.detect_conflicts()
if conflicts:
name_str = "; ".join(
"%s in %s" % (", ".join(names), app)
for app, names in conflicts.items()
)
raise CommandError(
"Conflicting migrations detected; multiple leaf nodes in the "
"migration graph: (%s).\nTo fix them run "
"'python manage.py makemigrations --merge'" % name_str
)
# If they supplied command line arguments, work out what they mean.
run_syncdb = options['run_syncdb']
target_app_labels_only = True
if options['app_label']:
# Validate app_label.
app_label = options['app_label']
try:
apps.get_app_config(app_label)
except LookupError as err:
raise CommandError(str(err))
if run_syncdb:
if app_label in executor.loader.migrated_apps:
raise CommandError("Can't use run_syncdb with app '%s' as it has migrations." % app_label)
elif app_label not in executor.loader.migrated_apps:
raise CommandError("App '%s' does not have migrations." % app_label)
if options['app_label'] and options['migration_name']:
migration_name = options['migration_name']
if migration_name == "zero":
targets = [(app_label, None)]
else:
try:
migration = executor.loader.get_migration_by_prefix(app_label, migration_name)
except AmbiguityError:
raise CommandError(
"More than one migration matches '%s' in app '%s'. "
"Please be more specific." %
(migration_name, app_label)
)
except KeyError:
raise CommandError("Cannot find a migration matching '%s' from app '%s'." % (
migration_name, app_label))
targets = [(app_label, migration.name)]
target_app_labels_only = False
elif options['app_label']:
targets = [key for key in executor.loader.graph.leaf_nodes() if key[0] == app_label]
else:
targets = executor.loader.graph.leaf_nodes()
plan = executor.migration_plan(targets)
if options['plan']:
self.stdout.write('Planned operations:', self.style.MIGRATE_LABEL)
if not plan:
self.stdout.write(' No planned migration operations.')
for migration, backwards in plan:
self.stdout.write(str(migration), self.style.MIGRATE_HEADING)
for operation in migration.operations:
message, is_error = self.describe_operation(operation, backwards)
style = self.style.WARNING if is_error else None
self.stdout.write(' ' + message, style)
return
# At this point, ignore run_syncdb if there aren't any apps to sync.
run_syncdb = options['run_syncdb'] and executor.loader.unmigrated_apps
# Print some useful info
if self.verbosity >= 1:
self.stdout.write(self.style.MIGRATE_HEADING("Operations to perform:"))
if run_syncdb:
if options['app_label']:
self.stdout.write(
self.style.MIGRATE_LABEL(" Synchronize unmigrated app: %s" % app_label)
)
else:
self.stdout.write(
self.style.MIGRATE_LABEL(" Synchronize unmigrated apps: ") +
(", ".join(sorted(executor.loader.unmigrated_apps)))
)
if target_app_labels_only:
self.stdout.write(
self.style.MIGRATE_LABEL(" Apply all migrations: ") +
(", ".join(sorted({a for a, n in targets})) or "(none)")
)
else:
if targets[0][1] is None:
self.stdout.write(self.style.MIGRATE_LABEL(
" Unapply all migrations: ") + "%s" % (targets[0][0],)
)
else:
self.stdout.write(self.style.MIGRATE_LABEL(
" Target specific migration: ") + "%s, from %s"
% (targets[0][1], targets[0][0])
)
pre_migrate_state = executor._create_project_state(with_applied_migrations=True)
pre_migrate_apps = pre_migrate_state.apps
emit_pre_migrate_signal(
self.verbosity, self.interactive, connection.alias, apps=pre_migrate_apps, plan=plan,
)
# Run the syncdb phase.
if run_syncdb:
if self.verbosity >= 1:
self.stdout.write(self.style.MIGRATE_HEADING("Synchronizing apps without migrations:"))
if options['app_label']:
self.sync_apps(connection, [app_label])
else:
self.sync_apps(connection, executor.loader.unmigrated_apps)
# Migrate!
if self.verbosity >= 1:
self.stdout.write(self.style.MIGRATE_HEADING("Running migrations:"))
if not plan:
if self.verbosity >= 1:
self.stdout.write(" No migrations to apply.")
# If there's changes that aren't in migrations yet, tell them how to fix it.
autodetector = MigrationAutodetector(
executor.loader.project_state(),
ProjectState.from_apps(apps),
)
changes = autodetector.changes(graph=executor.loader.graph)
if changes:
self.stdout.write(self.style.NOTICE(
" Your models have changes that are not yet reflected "
"in a migration, and so won't be applied."
))
self.stdout.write(self.style.NOTICE(
" Run 'manage.py makemigrations' to make new "
"migrations, and then re-run 'manage.py migrate' to "
"apply them."
))
fake = False
fake_initial = False
else:
fake = options['fake']
fake_initial = options['fake_initial']
post_migrate_state = executor.migrate(
targets, plan=plan, state=pre_migrate_state.clone(), fake=fake,
fake_initial=fake_initial,
)
# post_migrate signals have access to all models. Ensure that all models
# are reloaded in case any are delayed.
post_migrate_state.clear_delayed_apps_cache()
post_migrate_apps = post_migrate_state.apps
# Re-render models of real apps to include relationships now that
# we've got a final state. This wouldn't be necessary if real apps
# models were rendered with relationships in the first place.
with post_migrate_apps.bulk_update():
model_keys = []
for model_state in post_migrate_apps.real_models:
model_key = model_state.app_label, model_state.name_lower
model_keys.append(model_key)
post_migrate_apps.unregister_model(*model_key)
post_migrate_apps.render_multiple([
ModelState.from_model(apps.get_model(*model)) for model in model_keys
])
# Send the post_migrate signal, so individual apps can do whatever they need
# to do at this point.
emit_post_migrate_signal(
self.verbosity, self.interactive, connection.alias, apps=post_migrate_apps, plan=plan,
)
def migration_progress_callback(self, action, migration=None, fake=False):
if self.verbosity >= 1:
compute_time = self.verbosity > 1
if action == "apply_start":
if compute_time:
self.start = time.monotonic()
self.stdout.write(" Applying %s..." % migration, ending="")
self.stdout.flush()
elif action == "apply_success":
elapsed = " (%.3fs)" % (time.monotonic() - self.start) if compute_time else ""
if fake:
self.stdout.write(self.style.SUCCESS(" FAKED" + elapsed))
else:
self.stdout.write(self.style.SUCCESS(" OK" + elapsed))
elif action == "unapply_start":
if compute_time:
self.start = time.monotonic()
self.stdout.write(" Unapplying %s..." % migration, ending="")
self.stdout.flush()
elif action == "unapply_success":
elapsed = " (%.3fs)" % (time.monotonic() - self.start) if compute_time else ""
if fake:
self.stdout.write(self.style.SUCCESS(" FAKED" + elapsed))
else:
self.stdout.write(self.style.SUCCESS(" OK" + elapsed))
elif action == "render_start":
if compute_time:
self.start = time.monotonic()
self.stdout.write(" Rendering model states...", ending="")
self.stdout.flush()
elif action == "render_success":
elapsed = " (%.3fs)" % (time.monotonic() - self.start) if compute_time else ""
self.stdout.write(self.style.SUCCESS(" DONE" + elapsed))
def sync_apps(self, connection, app_labels):
"""Run the old syncdb-style operation on a list of app_labels."""
with connection.cursor() as cursor:
tables = connection.introspection.table_names(cursor)
# Build the manifest of apps and models that are to be synchronized.
all_models = [
(
app_config.label,
router.get_migratable_models(app_config, connection.alias, include_auto_created=False),
)
for app_config in apps.get_app_configs()
if app_config.models_module is not None and app_config.label in app_labels
]
def model_installed(model):
opts = model._meta
converter = connection.introspection.identifier_converter
return not (
(converter(opts.db_table) in tables) or
(opts.auto_created and converter(opts.auto_created._meta.db_table) in tables)
)
manifest = {
app_name: list(filter(model_installed, model_list))
for app_name, model_list in all_models
}
# Create the tables for each model
if self.verbosity >= 1:
self.stdout.write(" Creating tables...\n")
with connection.schema_editor() as editor:
for app_name, model_list in manifest.items():
for model in model_list:
# Never install unmanaged models, etc.
if not model._meta.can_migrate(connection):
continue
if self.verbosity >= 3:
self.stdout.write(
" Processing %s.%s model\n" % (app_name, model._meta.object_name)
)
if self.verbosity >= 1:
self.stdout.write(" Creating table %s\n" % model._meta.db_table)
editor.create_model(model)
# Deferred SQL is executed when exiting the editor's context.
if self.verbosity >= 1:
self.stdout.write(" Running deferred SQL...\n")
@staticmethod
def describe_operation(operation, backwards):
"""Return a string that describes a migration operation for --plan."""
prefix = ''
if hasattr(operation, 'code'):
code = operation.reverse_code if backwards else operation.code
action = code.__doc__ if code else ''
elif hasattr(operation, 'sql'):
action = operation.reverse_sql if backwards else operation.sql
else:
action = ''
if backwards:
prefix = 'Undo '
if action is None:
action = 'IRREVERSIBLE'
is_error = True
else:
action = str(action).replace('\n', '')
is_error = False
if action:
action = ' -> ' + action
truncated = Truncator(action)
return prefix + operation.describe() + truncated.chars(40), is_error
|
cfb2bbb3942da4c293f3899bc153c7d1cfea4af1a0a1ad9b81b49a1447a83807 | from django.apps import apps
from django.core import checks
from django.core.checks.registry import registry
from django.core.management.base import BaseCommand, CommandError
class Command(BaseCommand):
help = "Checks the entire Django project for potential problems."
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument('args', metavar='app_label', nargs='*')
parser.add_argument(
'--tag', '-t', action='append', dest='tags',
help='Run only checks labeled with given tag.',
)
parser.add_argument(
'--list-tags', action='store_true',
help='List available tags.',
)
parser.add_argument(
'--deploy', action='store_true',
help='Check deployment settings.',
)
parser.add_argument(
'--fail-level',
default='ERROR',
choices=['CRITICAL', 'ERROR', 'WARNING', 'INFO', 'DEBUG'],
help=(
'Message level that will cause the command to exit with a '
'non-zero status. Default is ERROR.'
),
)
def handle(self, *app_labels, **options):
include_deployment_checks = options['deploy']
if options['list_tags']:
self.stdout.write('\n'.join(sorted(registry.tags_available(include_deployment_checks))))
return
if app_labels:
app_configs = [apps.get_app_config(app_label) for app_label in app_labels]
else:
app_configs = None
tags = options['tags']
if tags:
try:
invalid_tag = next(
tag for tag in tags if not checks.tag_exists(tag, include_deployment_checks)
)
except StopIteration:
# no invalid tags
pass
else:
raise CommandError('There is no system check with the "%s" tag.' % invalid_tag)
self.check(
app_configs=app_configs,
tags=tags,
display_num_errors=True,
include_deployment_checks=include_deployment_checks,
fail_level=getattr(checks, options['fail_level']),
)
|
218500f325d9b3af1ff33358792200fd516c55fb93041fa9fb6160769775948d | from importlib import import_module
from django.apps import apps
from django.core.management.base import BaseCommand, CommandError
from django.core.management.color import no_style
from django.core.management.sql import emit_post_migrate_signal, sql_flush
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
'Removes ALL DATA from the database, including data added during '
'migrations. Does not achieve a "fresh install" state.'
)
stealth_options = ('reset_sequences', 'allow_cascade', 'inhibit_post_migrate')
def add_arguments(self, parser):
parser.add_argument(
'--noinput', '--no-input', action='store_false', dest='interactive',
help='Tells Django to NOT prompt the user for input of any kind.',
)
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database to flush. Defaults to the "default" database.',
)
def handle(self, **options):
database = options['database']
connection = connections[database]
verbosity = options['verbosity']
interactive = options['interactive']
# The following are stealth options used by Django's internals.
reset_sequences = options.get('reset_sequences', True)
allow_cascade = options.get('allow_cascade', False)
inhibit_post_migrate = options.get('inhibit_post_migrate', False)
self.style = no_style()
# Import the 'management' module within each installed app, to register
# dispatcher events.
for app_config in apps.get_app_configs():
try:
import_module('.management', app_config.name)
except ImportError:
pass
sql_list = sql_flush(self.style, connection, only_django=True,
reset_sequences=reset_sequences,
allow_cascade=allow_cascade)
if interactive:
confirm = input("""You have requested a flush of the database.
This will IRREVERSIBLY DESTROY all data currently in the %r database,
and return each table to an empty state.
Are you sure you want to do this?
Type 'yes' to continue, or 'no' to cancel: """ % connection.settings_dict['NAME'])
else:
confirm = 'yes'
if confirm == 'yes':
try:
connection.ops.execute_sql_flush(database, sql_list)
except Exception as exc:
raise CommandError(
"Database %s couldn't be flushed. Possible reasons:\n"
" * The database isn't running or isn't configured correctly.\n"
" * At least one of the expected database tables doesn't exist.\n"
" * The SQL was invalid.\n"
"Hint: Look at the output of 'django-admin sqlflush'. "
"That's the SQL this command wasn't able to run.\n" % (
connection.settings_dict['NAME'],
)
) from exc
# Empty sql_list may signify an empty database and post_migrate would then crash
if sql_list and not inhibit_post_migrate:
# Emit the post migrate signal. This allows individual applications to
# respond as if the database had been migrated from scratch.
emit_post_migrate_signal(verbosity, interactive, database)
else:
self.stdout.write("Flush cancelled.\n")
|
16c5739ceba381ab2a1c8ba462545ee49a8896294c15f3871ceaa9f76c51a726 | import warnings
from django.apps import apps
from django.core import serializers
from django.core.management.base import BaseCommand, CommandError
from django.core.management.utils import parse_apps_and_model_labels
from django.db import DEFAULT_DB_ALIAS, router
class ProxyModelWarning(Warning):
pass
class Command(BaseCommand):
help = (
"Output the contents of the database as a fixture of the given format "
"(using each model's default manager unless --all is specified)."
)
def add_arguments(self, parser):
parser.add_argument(
'args', metavar='app_label[.ModelName]', nargs='*',
help='Restricts dumped data to the specified app_label or app_label.ModelName.',
)
parser.add_argument(
'--format', default='json',
help='Specifies the output serialization format for fixtures.',
)
parser.add_argument(
'--indent', type=int,
help='Specifies the indent level to use when pretty-printing output.',
)
parser.add_argument(
'--database',
default=DEFAULT_DB_ALIAS,
help='Nominates a specific database to dump fixtures from. '
'Defaults to the "default" database.',
)
parser.add_argument(
'-e', '--exclude', action='append', default=[],
help='An app_label or app_label.ModelName to exclude '
'(use multiple --exclude to exclude multiple apps/models).',
)
parser.add_argument(
'--natural-foreign', action='store_true', dest='use_natural_foreign_keys',
help='Use natural foreign keys if they are available.',
)
parser.add_argument(
'--natural-primary', action='store_true', dest='use_natural_primary_keys',
help='Use natural primary keys if they are available.',
)
parser.add_argument(
'-a', '--all', action='store_true', dest='use_base_manager',
help="Use Django's base manager to dump all models stored in the database, "
"including those that would otherwise be filtered or modified by a custom manager.",
)
parser.add_argument(
'--pks', dest='primary_keys',
help="Only dump objects with given primary keys. Accepts a comma-separated "
"list of keys. This option only works when you specify one model.",
)
parser.add_argument(
'-o', '--output',
help='Specifies file to which the output is written.'
)
def handle(self, *app_labels, **options):
format = options['format']
indent = options['indent']
using = options['database']
excludes = options['exclude']
output = options['output']
show_traceback = options['traceback']
use_natural_foreign_keys = options['use_natural_foreign_keys']
use_natural_primary_keys = options['use_natural_primary_keys']
use_base_manager = options['use_base_manager']
pks = options['primary_keys']
if pks:
primary_keys = [pk.strip() for pk in pks.split(',')]
else:
primary_keys = []
excluded_models, excluded_apps = parse_apps_and_model_labels(excludes)
if not app_labels:
if primary_keys:
raise CommandError("You can only use --pks option with one model")
app_list = dict.fromkeys(
app_config for app_config in apps.get_app_configs()
if app_config.models_module is not None and app_config not in excluded_apps
)
else:
if len(app_labels) > 1 and primary_keys:
raise CommandError("You can only use --pks option with one model")
app_list = {}
for label in app_labels:
try:
app_label, model_label = label.split('.')
try:
app_config = apps.get_app_config(app_label)
except LookupError as e:
raise CommandError(str(e))
if app_config.models_module is None or app_config in excluded_apps:
continue
try:
model = app_config.get_model(model_label)
except LookupError:
raise CommandError("Unknown model: %s.%s" % (app_label, model_label))
app_list_value = app_list.setdefault(app_config, [])
# We may have previously seen an "all-models" request for
# this app (no model qualifier was given). In this case
# there is no need adding specific models to the list.
if app_list_value is not None:
if model not in app_list_value:
app_list_value.append(model)
except ValueError:
if primary_keys:
raise CommandError("You can only use --pks option with one model")
# This is just an app - no model qualifier
app_label = label
try:
app_config = apps.get_app_config(app_label)
except LookupError as e:
raise CommandError(str(e))
if app_config.models_module is None or app_config in excluded_apps:
continue
app_list[app_config] = None
# Check that the serialization format exists; this is a shortcut to
# avoid collating all the objects and _then_ failing.
if format not in serializers.get_public_serializer_formats():
try:
serializers.get_serializer(format)
except serializers.SerializerDoesNotExist:
pass
raise CommandError("Unknown serialization format: %s" % format)
def get_objects(count_only=False):
"""
Collate the objects to be serialized. If count_only is True, just
count the number of objects to be serialized.
"""
models = serializers.sort_dependencies(app_list.items())
for model in models:
if model in excluded_models:
continue
if model._meta.proxy and model._meta.proxy_for_model not in models:
warnings.warn(
"%s is a proxy model and won't be serialized." % model._meta.label,
category=ProxyModelWarning,
)
if not model._meta.proxy and router.allow_migrate_model(using, model):
if use_base_manager:
objects = model._base_manager
else:
objects = model._default_manager
queryset = objects.using(using).order_by(model._meta.pk.name)
if primary_keys:
queryset = queryset.filter(pk__in=primary_keys)
if count_only:
yield queryset.order_by().count()
else:
yield from queryset.iterator()
try:
self.stdout.ending = None
progress_output = None
object_count = 0
# If dumpdata is outputting to stdout, there is no way to display progress
if output and self.stdout.isatty() and options['verbosity'] > 0:
progress_output = self.stdout
object_count = sum(get_objects(count_only=True))
stream = open(output, 'w') if output else None
try:
serializers.serialize(
format, get_objects(), indent=indent,
use_natural_foreign_keys=use_natural_foreign_keys,
use_natural_primary_keys=use_natural_primary_keys,
stream=stream or self.stdout, progress_output=progress_output,
object_count=object_count,
)
finally:
if stream:
stream.close()
except Exception as e:
if show_traceback:
raise
raise CommandError("Unable to serialize database: %s" % e)
|
630b87ab99889339e287e22c812091b1002aa1def03150b3a325e9c01fe13b94 | import errno
import os
import re
import socket
import sys
from datetime import datetime
from django.conf import settings
from django.core.management.base import BaseCommand, CommandError
from django.core.servers.basehttp import (
WSGIServer, get_internal_wsgi_application, run,
)
from django.utils import autoreload
naiveip_re = re.compile(r"""^(?:
(?P<addr>
(?P<ipv4>\d{1,3}(?:\.\d{1,3}){3}) | # IPv4 address
(?P<ipv6>\[[a-fA-F0-9:]+\]) | # IPv6 address
(?P<fqdn>[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*) # FQDN
):)?(?P<port>\d+)$""", re.X)
class Command(BaseCommand):
help = "Starts a lightweight Web server for development."
# Validation is called explicitly each time the server is reloaded.
requires_system_checks = False
stealth_options = ('shutdown_message',)
default_addr = '127.0.0.1'
default_addr_ipv6 = '::1'
default_port = '8000'
protocol = 'http'
server_cls = WSGIServer
def add_arguments(self, parser):
parser.add_argument(
'addrport', nargs='?',
help='Optional port number, or ipaddr:port'
)
parser.add_argument(
'--ipv6', '-6', action='store_true', dest='use_ipv6',
help='Tells Django to use an IPv6 address.',
)
parser.add_argument(
'--nothreading', action='store_false', dest='use_threading',
help='Tells Django to NOT use threading.',
)
parser.add_argument(
'--noreload', action='store_false', dest='use_reloader',
help='Tells Django to NOT use the auto-reloader.',
)
def execute(self, *args, **options):
if options['no_color']:
# We rely on the environment because it's currently the only
# way to reach WSGIRequestHandler. This seems an acceptable
# compromise considering `runserver` runs indefinitely.
os.environ["DJANGO_COLORS"] = "nocolor"
super().execute(*args, **options)
def get_handler(self, *args, **options):
"""Return the default WSGI handler for the runner."""
return get_internal_wsgi_application()
def handle(self, *args, **options):
if not settings.DEBUG and not settings.ALLOWED_HOSTS:
raise CommandError('You must set settings.ALLOWED_HOSTS if DEBUG is False.')
self.use_ipv6 = options['use_ipv6']
if self.use_ipv6 and not socket.has_ipv6:
raise CommandError('Your Python does not support IPv6.')
self._raw_ipv6 = False
if not options['addrport']:
self.addr = ''
self.port = self.default_port
else:
m = re.match(naiveip_re, options['addrport'])
if m is None:
raise CommandError('"%s" is not a valid port number '
'or address:port pair.' % options['addrport'])
self.addr, _ipv4, _ipv6, _fqdn, self.port = m.groups()
if not self.port.isdigit():
raise CommandError("%r is not a valid port number." % self.port)
if self.addr:
if _ipv6:
self.addr = self.addr[1:-1]
self.use_ipv6 = True
self._raw_ipv6 = True
elif self.use_ipv6 and not _fqdn:
raise CommandError('"%s" is not a valid IPv6 address.' % self.addr)
if not self.addr:
self.addr = self.default_addr_ipv6 if self.use_ipv6 else self.default_addr
self._raw_ipv6 = self.use_ipv6
self.run(**options)
def run(self, **options):
"""Run the server, using the autoreloader if needed."""
use_reloader = options['use_reloader']
if use_reloader:
autoreload.run_with_reloader(self.inner_run, **options)
else:
self.inner_run(None, **options)
def inner_run(self, *args, **options):
# If an exception was silenced in ManagementUtility.execute in order
# to be raised in the child process, raise it now.
autoreload.raise_last_exception()
threading = options['use_threading']
# 'shutdown_message' is a stealth option.
shutdown_message = options.get('shutdown_message', '')
quit_command = 'CTRL-BREAK' if sys.platform == 'win32' else 'CONTROL-C'
self.stdout.write("Performing system checks...\n\n")
self.check(display_num_errors=True)
# Need to check migrations here, so can't use the
# requires_migrations_check attribute.
self.check_migrations()
now = datetime.now().strftime('%B %d, %Y - %X')
self.stdout.write(now)
self.stdout.write((
"Django version %(version)s, using settings %(settings)r\n"
"Starting development server at %(protocol)s://%(addr)s:%(port)s/\n"
"Quit the server with %(quit_command)s.\n"
) % {
"version": self.get_version(),
"settings": settings.SETTINGS_MODULE,
"protocol": self.protocol,
"addr": '[%s]' % self.addr if self._raw_ipv6 else self.addr,
"port": self.port,
"quit_command": quit_command,
})
try:
handler = self.get_handler(*args, **options)
run(self.addr, int(self.port), handler,
ipv6=self.use_ipv6, threading=threading, server_cls=self.server_cls)
except OSError as e:
# Use helpful error messages instead of ugly tracebacks.
ERRORS = {
errno.EACCES: "You don't have permission to access that port.",
errno.EADDRINUSE: "That port is already in use.",
errno.EADDRNOTAVAIL: "That IP address can't be assigned to.",
}
try:
error_text = ERRORS[e.errno]
except KeyError:
error_text = e
self.stderr.write("Error: %s" % error_text)
# Need to use an OS exit because sys.exit doesn't work in a thread
os._exit(1)
except KeyboardInterrupt:
if shutdown_message:
self.stdout.write(shutdown_message)
sys.exit(0)
# Kept for backward compatibility
BaseRunserverCommand = Command
|
e449d7d9a1110fc3a928ecefbef040416b3799f3b086674129b3c5eb2bc899cc | from django.core.management.base import BaseCommand
def module_to_dict(module, omittable=lambda k: k.startswith('_') or not k.isupper()):
"""Convert a module namespace to a Python dictionary."""
return {k: repr(getattr(module, k)) for k in dir(module) if not omittable(k)}
class Command(BaseCommand):
help = """Displays differences between the current settings.py and Django's
default settings."""
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--all', action='store_true',
help=(
'Display all settings, regardless of their value. In "hash" '
'mode, default values are prefixed by "###".'
),
)
parser.add_argument(
'--default', metavar='MODULE',
help=(
"The settings module to compare the current settings against. Leave empty to "
"compare against Django's default settings."
),
)
parser.add_argument(
'--output', default='hash', choices=('hash', 'unified'),
help=(
"Selects the output format. 'hash' mode displays each changed "
"setting, with the settings that don't appear in the defaults "
"followed by ###. 'unified' mode prefixes the default setting "
"with a minus sign, followed by the changed setting prefixed "
"with a plus sign."
),
)
def handle(self, **options):
from django.conf import settings, Settings, global_settings
# Because settings are imported lazily, we need to explicitly load them.
if not settings.configured:
settings._setup()
user_settings = module_to_dict(settings._wrapped)
default = options['default']
default_settings = module_to_dict(Settings(default) if default else global_settings)
output_func = {
'hash': self.output_hash,
'unified': self.output_unified,
}[options['output']]
return '\n'.join(output_func(user_settings, default_settings, **options))
def output_hash(self, user_settings, default_settings, **options):
# Inspired by Postfix's "postconf -n".
output = []
for key in sorted(user_settings):
if key not in default_settings:
output.append("%s = %s ###" % (key, user_settings[key]))
elif user_settings[key] != default_settings[key]:
output.append("%s = %s" % (key, user_settings[key]))
elif options['all']:
output.append("### %s = %s" % (key, user_settings[key]))
return output
def output_unified(self, user_settings, default_settings, **options):
output = []
for key in sorted(user_settings):
if key not in default_settings:
output.append(self.style.SUCCESS("+ %s = %s" % (key, user_settings[key])))
elif user_settings[key] != default_settings[key]:
output.append(self.style.ERROR("- %s = %s" % (key, default_settings[key])))
output.append(self.style.SUCCESS("+ %s = %s" % (key, user_settings[key])))
elif options['all']:
output.append(" %s = %s" % (key, user_settings[key]))
return output
|
5797a560b7d7d805b5e7a782ba9c38739e3f41a96e579cefe41dc04f8d73e219 | from django.apps import apps
from django.conf import settings
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections, migrations
from django.db.migrations.loader import AmbiguityError, MigrationLoader
from django.db.migrations.migration import SwappableTuple
from django.db.migrations.optimizer import MigrationOptimizer
from django.db.migrations.writer import MigrationWriter
from django.utils.version import get_docs_version
class Command(BaseCommand):
help = "Squashes an existing set of migrations (from first until specified) into a single new one."
def add_arguments(self, parser):
parser.add_argument(
'app_label',
help='App label of the application to squash migrations for.',
)
parser.add_argument(
'start_migration_name', nargs='?',
help='Migrations will be squashed starting from and including this migration.',
)
parser.add_argument(
'migration_name',
help='Migrations will be squashed until and including this migration.',
)
parser.add_argument(
'--no-optimize', action='store_true',
help='Do not try to optimize the squashed operations.',
)
parser.add_argument(
'--noinput', '--no-input', action='store_false', dest='interactive',
help='Tells Django to NOT prompt the user for input of any kind.',
)
parser.add_argument(
'--squashed-name',
help='Sets the name of the new squashed migration.',
)
parser.add_argument(
'--no-header', action='store_false', dest='include_header',
help='Do not add a header comment to the new squashed migration.',
)
def handle(self, **options):
self.verbosity = options['verbosity']
self.interactive = options['interactive']
app_label = options['app_label']
start_migration_name = options['start_migration_name']
migration_name = options['migration_name']
no_optimize = options['no_optimize']
squashed_name = options['squashed_name']
include_header = options['include_header']
# Validate app_label.
try:
apps.get_app_config(app_label)
except LookupError as err:
raise CommandError(str(err))
# Load the current graph state, check the app and migration they asked for exists
loader = MigrationLoader(connections[DEFAULT_DB_ALIAS])
if app_label not in loader.migrated_apps:
raise CommandError(
"App '%s' does not have migrations (so squashmigrations on "
"it makes no sense)" % app_label
)
migration = self.find_migration(loader, app_label, migration_name)
# Work out the list of predecessor migrations
migrations_to_squash = [
loader.get_migration(al, mn)
for al, mn in loader.graph.forwards_plan((migration.app_label, migration.name))
if al == migration.app_label
]
if start_migration_name:
start_migration = self.find_migration(loader, app_label, start_migration_name)
start = loader.get_migration(start_migration.app_label, start_migration.name)
try:
start_index = migrations_to_squash.index(start)
migrations_to_squash = migrations_to_squash[start_index:]
except ValueError:
raise CommandError(
"The migration '%s' cannot be found. Maybe it comes after "
"the migration '%s'?\n"
"Have a look at:\n"
" python manage.py showmigrations %s\n"
"to debug this issue." % (start_migration, migration, app_label)
)
# Tell them what we're doing and optionally ask if we should proceed
if self.verbosity > 0 or self.interactive:
self.stdout.write(self.style.MIGRATE_HEADING("Will squash the following migrations:"))
for migration in migrations_to_squash:
self.stdout.write(" - %s" % migration.name)
if self.interactive:
answer = None
while not answer or answer not in "yn":
answer = input("Do you wish to proceed? [yN] ")
if not answer:
answer = "n"
break
else:
answer = answer[0].lower()
if answer != "y":
return
# Load the operations from all those migrations and concat together,
# along with collecting external dependencies and detecting
# double-squashing
operations = []
dependencies = set()
# We need to take all dependencies from the first migration in the list
# as it may be 0002 depending on 0001
first_migration = True
for smigration in migrations_to_squash:
if smigration.replaces:
raise CommandError(
"You cannot squash squashed migrations! Please transition "
"it to a normal migration first: "
"https://docs.djangoproject.com/en/%s/topics/migrations/#squashing-migrations" % get_docs_version()
)
operations.extend(smigration.operations)
for dependency in smigration.dependencies:
if isinstance(dependency, SwappableTuple):
if settings.AUTH_USER_MODEL == dependency.setting:
dependencies.add(("__setting__", "AUTH_USER_MODEL"))
else:
dependencies.add(dependency)
elif dependency[0] != smigration.app_label or first_migration:
dependencies.add(dependency)
first_migration = False
if no_optimize:
if self.verbosity > 0:
self.stdout.write(self.style.MIGRATE_HEADING("(Skipping optimization.)"))
new_operations = operations
else:
if self.verbosity > 0:
self.stdout.write(self.style.MIGRATE_HEADING("Optimizing..."))
optimizer = MigrationOptimizer()
new_operations = optimizer.optimize(operations, migration.app_label)
if self.verbosity > 0:
if len(new_operations) == len(operations):
self.stdout.write(" No optimizations possible.")
else:
self.stdout.write(
" Optimized from %s operations to %s operations." %
(len(operations), len(new_operations))
)
# Work out the value of replaces (any squashed ones we're re-squashing)
# need to feed their replaces into ours
replaces = []
for migration in migrations_to_squash:
if migration.replaces:
replaces.extend(migration.replaces)
else:
replaces.append((migration.app_label, migration.name))
# Make a new migration with those operations
subclass = type("Migration", (migrations.Migration,), {
"dependencies": dependencies,
"operations": new_operations,
"replaces": replaces,
})
if start_migration_name:
if squashed_name:
# Use the name from --squashed-name.
prefix, _ = start_migration.name.split('_', 1)
name = '%s_%s' % (prefix, squashed_name)
else:
# Generate a name.
name = '%s_squashed_%s' % (start_migration.name, migration.name)
new_migration = subclass(name, app_label)
else:
name = '0001_%s' % (squashed_name or 'squashed_%s' % migration.name)
new_migration = subclass(name, app_label)
new_migration.initial = True
# Write out the new migration file
writer = MigrationWriter(new_migration, include_header)
with open(writer.path, "w", encoding='utf-8') as fh:
fh.write(writer.as_string())
if self.verbosity > 0:
self.stdout.write(self.style.MIGRATE_HEADING("Created new squashed migration %s" % writer.path))
self.stdout.write(" You should commit this migration but leave the old ones in place;")
self.stdout.write(" the new migration will be used for new installs. Once you are sure")
self.stdout.write(" all instances of the codebase have applied the migrations you squashed,")
self.stdout.write(" you can delete them.")
if writer.needs_manual_porting:
self.stdout.write(self.style.MIGRATE_HEADING("Manual porting required"))
self.stdout.write(" Your migrations contained functions that must be manually copied over,")
self.stdout.write(" as we could not safely copy their implementation.")
self.stdout.write(" See the comment at the top of the squashed migration for details.")
def find_migration(self, loader, app_label, name):
try:
return loader.get_migration_by_prefix(app_label, name)
except AmbiguityError:
raise CommandError(
"More than one migration matches '%s' in app '%s'. Please be "
"more specific." % (name, app_label)
)
except KeyError:
raise CommandError(
"Cannot find a migration matching '%s' from app '%s'." %
(name, app_label)
)
|
da09ae1b25d80a0a4f84e5774c9c528f63f1b52be0aea268245f9b512a144054 | import codecs
import concurrent.futures
import glob
import os
from django.core.management.base import BaseCommand, CommandError
from django.core.management.utils import (
find_command, is_ignored_path, popen_wrapper,
)
def has_bom(fn):
with open(fn, 'rb') as f:
sample = f.read(4)
return sample.startswith((codecs.BOM_UTF8, codecs.BOM_UTF16_LE, codecs.BOM_UTF16_BE))
def is_writable(path):
# Known side effect: updating file access/modified time to current time if
# it is writable.
try:
with open(path, 'a'):
os.utime(path, None)
except OSError:
return False
return True
class Command(BaseCommand):
help = 'Compiles .po files to .mo files for use with builtin gettext support.'
requires_system_checks = False
program = 'msgfmt'
program_options = ['--check-format']
def add_arguments(self, parser):
parser.add_argument(
'--locale', '-l', action='append', default=[],
help='Locale(s) to process (e.g. de_AT). Default is to process all. '
'Can be used multiple times.',
)
parser.add_argument(
'--exclude', '-x', action='append', default=[],
help='Locales to exclude. Default is none. Can be used multiple times.',
)
parser.add_argument(
'--use-fuzzy', '-f', dest='fuzzy', action='store_true',
help='Use fuzzy translations.',
)
parser.add_argument(
'--ignore', '-i', action='append', dest='ignore_patterns',
default=[], metavar='PATTERN',
help='Ignore directories matching this glob-style pattern. '
'Use multiple times to ignore more.',
)
def handle(self, **options):
locale = options['locale']
exclude = options['exclude']
ignore_patterns = set(options['ignore_patterns'])
self.verbosity = options['verbosity']
if options['fuzzy']:
self.program_options = self.program_options + ['-f']
if find_command(self.program) is None:
raise CommandError("Can't find %s. Make sure you have GNU gettext "
"tools 0.15 or newer installed." % self.program)
basedirs = [os.path.join('conf', 'locale'), 'locale']
if os.environ.get('DJANGO_SETTINGS_MODULE'):
from django.conf import settings
basedirs.extend(settings.LOCALE_PATHS)
# Walk entire tree, looking for locale directories
for dirpath, dirnames, filenames in os.walk('.', topdown=True):
for dirname in dirnames:
if is_ignored_path(os.path.normpath(os.path.join(dirpath, dirname)), ignore_patterns):
dirnames.remove(dirname)
elif dirname == 'locale':
basedirs.append(os.path.join(dirpath, dirname))
# Gather existing directories.
basedirs = set(map(os.path.abspath, filter(os.path.isdir, basedirs)))
if not basedirs:
raise CommandError("This script should be run from the Django Git "
"checkout or your project or app tree, or with "
"the settings module specified.")
# Build locale list
all_locales = []
for basedir in basedirs:
locale_dirs = filter(os.path.isdir, glob.glob('%s/*' % basedir))
all_locales.extend(map(os.path.basename, locale_dirs))
# Account for excluded locales
locales = locale or all_locales
locales = set(locales).difference(exclude)
self.has_errors = False
for basedir in basedirs:
if locales:
dirs = [os.path.join(basedir, l, 'LC_MESSAGES') for l in locales]
else:
dirs = [basedir]
locations = []
for ldir in dirs:
for dirpath, dirnames, filenames in os.walk(ldir):
locations.extend((dirpath, f) for f in filenames if f.endswith('.po'))
if locations:
self.compile_messages(locations)
if self.has_errors:
raise CommandError('compilemessages generated one or more errors.')
def compile_messages(self, locations):
"""
Locations is a list of tuples: [(directory, file), ...]
"""
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = []
for i, (dirpath, f) in enumerate(locations):
if self.verbosity > 0:
self.stdout.write('processing file %s in %s\n' % (f, dirpath))
po_path = os.path.join(dirpath, f)
if has_bom(po_path):
self.stderr.write(
'The %s file has a BOM (Byte Order Mark). Django only '
'supports .po files encoded in UTF-8 and without any BOM.' % po_path
)
self.has_errors = True
continue
base_path = os.path.splitext(po_path)[0]
# Check writability on first location
if i == 0 and not is_writable(base_path + '.mo'):
self.stderr.write(
'The po files under %s are in a seemingly not writable location. '
'mo files will not be updated/created.' % dirpath
)
self.has_errors = True
return
args = [self.program] + self.program_options + [
'-o', base_path + '.mo', base_path + '.po'
]
futures.append(executor.submit(popen_wrapper, args))
for future in concurrent.futures.as_completed(futures):
output, errors, status = future.result()
if status:
if self.verbosity > 0:
if errors:
self.stderr.write("Execution of %s failed: %s" % (self.program, errors))
else:
self.stderr.write("Execution of %s failed" % self.program)
self.has_errors = True
|
2ec88fe578380162ed734bd2d098a769a0002a305b2d49df0aad296b4af8145c | import socket
from django.core.mail import mail_admins, mail_managers, send_mail
from django.core.management.base import BaseCommand
from django.utils import timezone
class Command(BaseCommand):
help = "Sends a test email to the email addresses specified as arguments."
missing_args_message = "You must specify some email recipients, or pass the --managers or --admin options."
def add_arguments(self, parser):
parser.add_argument(
'email', nargs='*',
help='One or more email addresses to send a test email to.',
)
parser.add_argument(
'--managers', action='store_true',
help='Send a test email to the addresses specified in settings.MANAGERS.',
)
parser.add_argument(
'--admins', action='store_true',
help='Send a test email to the addresses specified in settings.ADMINS.',
)
def handle(self, *args, **kwargs):
subject = 'Test email from %s on %s' % (socket.gethostname(), timezone.now())
send_mail(
subject=subject,
message="If you\'re reading this, it was successful.",
from_email=None,
recipient_list=kwargs['email'],
)
if kwargs['managers']:
mail_managers(subject, "This email was sent to the site managers.")
if kwargs['admins']:
mail_admins(subject, "This email was sent to the site admins.")
|
cadfd657fa527cbf3e0f9fc37bd232e909a65a21f366d21a918d5e3fd150c242 | import functools
import glob
import gzip
import os
import sys
import warnings
import zipfile
from itertools import product
from django.apps import apps
from django.conf import settings
from django.core import serializers
from django.core.exceptions import ImproperlyConfigured
from django.core.management.base import BaseCommand, CommandError
from django.core.management.color import no_style
from django.core.management.utils import parse_apps_and_model_labels
from django.db import (
DEFAULT_DB_ALIAS, DatabaseError, IntegrityError, connections, router,
transaction,
)
from django.utils.functional import cached_property
try:
import bz2
has_bz2 = True
except ImportError:
has_bz2 = False
READ_STDIN = '-'
class Command(BaseCommand):
help = 'Installs the named fixture(s) in the database.'
missing_args_message = (
"No database fixture specified. Please provide the path of at least "
"one fixture in the command line."
)
def add_arguments(self, parser):
parser.add_argument('args', metavar='fixture', nargs='+', help='Fixture labels.')
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a specific database to load fixtures into. Defaults to the "default" database.',
)
parser.add_argument(
'--app', dest='app_label',
help='Only look for fixtures in the specified app.',
)
parser.add_argument(
'--ignorenonexistent', '-i', action='store_true', dest='ignore',
help='Ignores entries in the serialized data for fields that do not '
'currently exist on the model.',
)
parser.add_argument(
'-e', '--exclude', action='append', default=[],
help='An app_label or app_label.ModelName to exclude. Can be used multiple times.',
)
parser.add_argument(
'--format',
help='Format of serialized data when reading from stdin.',
)
def handle(self, *fixture_labels, **options):
self.ignore = options['ignore']
self.using = options['database']
self.app_label = options['app_label']
self.verbosity = options['verbosity']
self.excluded_models, self.excluded_apps = parse_apps_and_model_labels(options['exclude'])
self.format = options['format']
with transaction.atomic(using=self.using):
self.loaddata(fixture_labels)
# Close the DB connection -- unless we're still in a transaction. This
# is required as a workaround for an edge case in MySQL: if the same
# connection is used to create tables, load data, and query, the query
# can return incorrect results. See Django #7572, MySQL #37735.
if transaction.get_autocommit(self.using):
connections[self.using].close()
def loaddata(self, fixture_labels):
connection = connections[self.using]
# Keep a count of the installed objects and fixtures
self.fixture_count = 0
self.loaded_object_count = 0
self.fixture_object_count = 0
self.models = set()
self.serialization_formats = serializers.get_public_serializer_formats()
# Forcing binary mode may be revisited after dropping Python 2 support (see #22399)
self.compression_formats = {
None: (open, 'rb'),
'gz': (gzip.GzipFile, 'rb'),
'zip': (SingleZipReader, 'r'),
'stdin': (lambda *args: sys.stdin, None),
}
if has_bz2:
self.compression_formats['bz2'] = (bz2.BZ2File, 'r')
# Django's test suite repeatedly tries to load initial_data fixtures
# from apps that don't have any fixtures. Because disabling constraint
# checks can be expensive on some database (especially MSSQL), bail
# out early if no fixtures are found.
for fixture_label in fixture_labels:
if self.find_fixtures(fixture_label):
break
else:
return
with connection.constraint_checks_disabled():
self.objs_with_deferred_fields = []
for fixture_label in fixture_labels:
self.load_label(fixture_label)
for obj in self.objs_with_deferred_fields:
obj.save_deferred_fields(using=self.using)
# Since we disabled constraint checks, we must manually check for
# any invalid keys that might have been added
table_names = [model._meta.db_table for model in self.models]
try:
connection.check_constraints(table_names=table_names)
except Exception as e:
e.args = ("Problem installing fixtures: %s" % e,)
raise
# If we found even one object in a fixture, we need to reset the
# database sequences.
if self.loaded_object_count > 0:
sequence_sql = connection.ops.sequence_reset_sql(no_style(), self.models)
if sequence_sql:
if self.verbosity >= 2:
self.stdout.write("Resetting sequences\n")
with connection.cursor() as cursor:
for line in sequence_sql:
cursor.execute(line)
if self.verbosity >= 1:
if self.fixture_object_count == self.loaded_object_count:
self.stdout.write(
"Installed %d object(s) from %d fixture(s)"
% (self.loaded_object_count, self.fixture_count)
)
else:
self.stdout.write(
"Installed %d object(s) (of %d) from %d fixture(s)"
% (self.loaded_object_count, self.fixture_object_count, self.fixture_count)
)
def load_label(self, fixture_label):
"""Load fixtures files for a given label."""
show_progress = self.verbosity >= 3
for fixture_file, fixture_dir, fixture_name in self.find_fixtures(fixture_label):
_, ser_fmt, cmp_fmt = self.parse_name(os.path.basename(fixture_file))
open_method, mode = self.compression_formats[cmp_fmt]
fixture = open_method(fixture_file, mode)
try:
self.fixture_count += 1
objects_in_fixture = 0
loaded_objects_in_fixture = 0
if self.verbosity >= 2:
self.stdout.write(
"Installing %s fixture '%s' from %s."
% (ser_fmt, fixture_name, humanize(fixture_dir))
)
objects = serializers.deserialize(
ser_fmt, fixture, using=self.using, ignorenonexistent=self.ignore,
handle_forward_references=True,
)
for obj in objects:
objects_in_fixture += 1
if (obj.object._meta.app_config in self.excluded_apps or
type(obj.object) in self.excluded_models):
continue
if router.allow_migrate_model(self.using, obj.object.__class__):
loaded_objects_in_fixture += 1
self.models.add(obj.object.__class__)
try:
obj.save(using=self.using)
if show_progress:
self.stdout.write(
'\rProcessed %i object(s).' % loaded_objects_in_fixture,
ending=''
)
# psycopg2 raises ValueError if data contains NUL chars.
except (DatabaseError, IntegrityError, ValueError) as e:
e.args = ("Could not load %(app_label)s.%(object_name)s(pk=%(pk)s): %(error_msg)s" % {
'app_label': obj.object._meta.app_label,
'object_name': obj.object._meta.object_name,
'pk': obj.object.pk,
'error_msg': e,
},)
raise
if obj.deferred_fields:
self.objs_with_deferred_fields.append(obj)
if objects and show_progress:
self.stdout.write('') # add a newline after progress indicator
self.loaded_object_count += loaded_objects_in_fixture
self.fixture_object_count += objects_in_fixture
except Exception as e:
if not isinstance(e, CommandError):
e.args = ("Problem installing fixture '%s': %s" % (fixture_file, e),)
raise
finally:
fixture.close()
# Warn if the fixture we loaded contains 0 objects.
if objects_in_fixture == 0:
warnings.warn(
"No fixture data found for '%s'. (File format may be "
"invalid.)" % fixture_name,
RuntimeWarning
)
@functools.lru_cache(maxsize=None)
def find_fixtures(self, fixture_label):
"""Find fixture files for a given label."""
if fixture_label == READ_STDIN:
return [(READ_STDIN, None, READ_STDIN)]
fixture_name, ser_fmt, cmp_fmt = self.parse_name(fixture_label)
databases = [self.using, None]
cmp_fmts = list(self.compression_formats) if cmp_fmt is None else [cmp_fmt]
ser_fmts = serializers.get_public_serializer_formats() if ser_fmt is None else [ser_fmt]
if self.verbosity >= 2:
self.stdout.write("Loading '%s' fixtures..." % fixture_name)
if os.path.isabs(fixture_name):
fixture_dirs = [os.path.dirname(fixture_name)]
fixture_name = os.path.basename(fixture_name)
else:
fixture_dirs = self.fixture_dirs
if os.path.sep in os.path.normpath(fixture_name):
fixture_dirs = [os.path.join(dir_, os.path.dirname(fixture_name))
for dir_ in fixture_dirs]
fixture_name = os.path.basename(fixture_name)
suffixes = (
'.'.join(ext for ext in combo if ext)
for combo in product(databases, ser_fmts, cmp_fmts)
)
targets = {'.'.join((fixture_name, suffix)) for suffix in suffixes}
fixture_files = []
for fixture_dir in fixture_dirs:
if self.verbosity >= 2:
self.stdout.write("Checking %s for fixtures..." % humanize(fixture_dir))
fixture_files_in_dir = []
path = os.path.join(fixture_dir, fixture_name)
for candidate in glob.iglob(glob.escape(path) + '*'):
if os.path.basename(candidate) in targets:
# Save the fixture_dir and fixture_name for future error messages.
fixture_files_in_dir.append((candidate, fixture_dir, fixture_name))
if self.verbosity >= 2 and not fixture_files_in_dir:
self.stdout.write("No fixture '%s' in %s." %
(fixture_name, humanize(fixture_dir)))
# Check kept for backwards-compatibility; it isn't clear why
# duplicates are only allowed in different directories.
if len(fixture_files_in_dir) > 1:
raise CommandError(
"Multiple fixtures named '%s' in %s. Aborting." %
(fixture_name, humanize(fixture_dir)))
fixture_files.extend(fixture_files_in_dir)
if not fixture_files:
raise CommandError("No fixture named '%s' found." % fixture_name)
return fixture_files
@cached_property
def fixture_dirs(self):
"""
Return a list of fixture directories.
The list contains the 'fixtures' subdirectory of each installed
application, if it exists, the directories in FIXTURE_DIRS, and the
current directory.
"""
dirs = []
fixture_dirs = settings.FIXTURE_DIRS
if len(fixture_dirs) != len(set(fixture_dirs)):
raise ImproperlyConfigured("settings.FIXTURE_DIRS contains duplicates.")
for app_config in apps.get_app_configs():
app_label = app_config.label
app_dir = os.path.join(app_config.path, 'fixtures')
if app_dir in fixture_dirs:
raise ImproperlyConfigured(
"'%s' is a default fixture directory for the '%s' app "
"and cannot be listed in settings.FIXTURE_DIRS." % (app_dir, app_label)
)
if self.app_label and app_label != self.app_label:
continue
if os.path.isdir(app_dir):
dirs.append(app_dir)
dirs.extend(fixture_dirs)
dirs.append('')
return [os.path.realpath(d) for d in dirs]
def parse_name(self, fixture_name):
"""
Split fixture name in name, serialization format, compression format.
"""
if fixture_name == READ_STDIN:
if not self.format:
raise CommandError('--format must be specified when reading from stdin.')
return READ_STDIN, self.format, 'stdin'
parts = fixture_name.rsplit('.', 2)
if len(parts) > 1 and parts[-1] in self.compression_formats:
cmp_fmt = parts[-1]
parts = parts[:-1]
else:
cmp_fmt = None
if len(parts) > 1:
if parts[-1] in self.serialization_formats:
ser_fmt = parts[-1]
parts = parts[:-1]
else:
raise CommandError(
"Problem installing fixture '%s': %s is not a known "
"serialization format." % ('.'.join(parts[:-1]), parts[-1]))
else:
ser_fmt = None
name = '.'.join(parts)
return name, ser_fmt, cmp_fmt
class SingleZipReader(zipfile.ZipFile):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if len(self.namelist()) != 1:
raise ValueError("Zip-compressed fixtures must contain one file.")
def read(self):
return zipfile.ZipFile.read(self, self.namelist()[0])
def humanize(dirname):
return "'%s'" % dirname if dirname else 'absolute path'
|
319f0a5df08352eabeca71f1511ac79396893a61a0d147bb6d9c351b4bfd9d68 | import sys
from django.conf import settings
from django.core.management.base import BaseCommand
from django.core.management.utils import get_command_line_option
from django.test.utils import get_runner
class Command(BaseCommand):
help = 'Discover and run tests in the specified modules or the current directory.'
# DiscoverRunner runs the checks after databases are set up.
requires_system_checks = False
test_runner = None
def run_from_argv(self, argv):
"""
Pre-parse the command line to extract the value of the --testrunner
option. This allows a test runner to define additional command line
arguments.
"""
self.test_runner = get_command_line_option(argv, '--testrunner')
super().run_from_argv(argv)
def add_arguments(self, parser):
parser.add_argument(
'args', metavar='test_label', nargs='*',
help='Module paths to test; can be modulename, modulename.TestCase or modulename.TestCase.test_method'
)
parser.add_argument(
'--noinput', '--no-input', action='store_false', dest='interactive',
help='Tells Django to NOT prompt the user for input of any kind.',
)
parser.add_argument(
'--failfast', action='store_true',
help='Tells Django to stop running the test suite after first failed test.',
)
parser.add_argument(
'--testrunner',
help='Tells Django to use specified test runner class instead of '
'the one specified by the TEST_RUNNER setting.',
)
test_runner_class = get_runner(settings, self.test_runner)
if hasattr(test_runner_class, 'add_arguments'):
test_runner_class.add_arguments(parser)
def handle(self, *test_labels, **options):
TestRunner = get_runner(settings, options['testrunner'])
test_runner = TestRunner(**options)
failures = test_runner.run_tests(test_labels)
if failures:
sys.exit(1)
|
c51539fa27178b4e725c8d5fa830c0610c25b248265830675c5589a28b99901c | from django.conf import settings
from django.core.cache import caches
from django.core.cache.backends.db import BaseDatabaseCache
from django.core.management.base import BaseCommand, CommandError
from django.db import (
DEFAULT_DB_ALIAS, connections, models, router, transaction,
)
from django.db.utils import DatabaseError
class Command(BaseCommand):
help = "Creates the tables needed to use the SQL cache backend."
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'args', metavar='table_name', nargs='*',
help='Optional table names. Otherwise, settings.CACHES is used to find cache tables.',
)
parser.add_argument(
'--database',
default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which the cache tables will be '
'installed. Defaults to the "default" database.',
)
parser.add_argument(
'--dry-run', action='store_true',
help='Does not create the table, just prints the SQL that would be run.',
)
def handle(self, *tablenames, **options):
db = options['database']
self.verbosity = options['verbosity']
dry_run = options['dry_run']
if tablenames:
# Legacy behavior, tablename specified as argument
for tablename in tablenames:
self.create_table(db, tablename, dry_run)
else:
for cache_alias in settings.CACHES:
cache = caches[cache_alias]
if isinstance(cache, BaseDatabaseCache):
self.create_table(db, cache._table, dry_run)
def create_table(self, database, tablename, dry_run):
cache = BaseDatabaseCache(tablename, {})
if not router.allow_migrate_model(database, cache.cache_model_class):
return
connection = connections[database]
if tablename in connection.introspection.table_names():
if self.verbosity > 0:
self.stdout.write("Cache table '%s' already exists." % tablename)
return
fields = (
# "key" is a reserved word in MySQL, so use "cache_key" instead.
models.CharField(name='cache_key', max_length=255, unique=True, primary_key=True),
models.TextField(name='value'),
models.DateTimeField(name='expires', db_index=True),
)
table_output = []
index_output = []
qn = connection.ops.quote_name
for f in fields:
field_output = [
qn(f.name),
f.db_type(connection=connection),
'%sNULL' % ('NOT ' if not f.null else ''),
]
if f.primary_key:
field_output.append("PRIMARY KEY")
elif f.unique:
field_output.append("UNIQUE")
if f.db_index:
unique = "UNIQUE " if f.unique else ""
index_output.append(
"CREATE %sINDEX %s ON %s (%s);" %
(unique, qn('%s_%s' % (tablename, f.name)), qn(tablename), qn(f.name))
)
table_output.append(" ".join(field_output))
full_statement = ["CREATE TABLE %s (" % qn(tablename)]
for i, line in enumerate(table_output):
full_statement.append(' %s%s' % (line, ',' if i < len(table_output) - 1 else ''))
full_statement.append(');')
full_statement = "\n".join(full_statement)
if dry_run:
self.stdout.write(full_statement)
for statement in index_output:
self.stdout.write(statement)
return
with transaction.atomic(using=database, savepoint=connection.features.can_rollback_ddl):
with connection.cursor() as curs:
try:
curs.execute(full_statement)
except DatabaseError as e:
raise CommandError(
"Cache table '%s' could not be created.\nThe error was: %s." %
(tablename, e))
for statement in index_output:
curs.execute(statement)
if self.verbosity > 1:
self.stdout.write("Cache table '%s' created." % tablename)
|
65f6cce967b0734ee0cd4ea44b8a6ae7f592115c84f7ff1084666400986b6362 | from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Runs the command-line client for specified database, or the "
"default database if none is provided."
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
connection.client.runshell()
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
|
22f0d5a4e20061156d6350d01210e89bea4fb07e1a0c02cdf17e843a0b93e61f | import glob
import os
import re
import sys
from functools import total_ordering
from itertools import dropwhile
import django
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.core.files.temp import NamedTemporaryFile
from django.core.management.base import BaseCommand, CommandError
from django.core.management.utils import (
find_command, handle_extensions, is_ignored_path, popen_wrapper,
)
from django.utils.encoding import DEFAULT_LOCALE_ENCODING
from django.utils.functional import cached_property
from django.utils.jslex import prepare_js_for_gettext
from django.utils.text import get_text_list
from django.utils.translation import templatize
plural_forms_re = re.compile(r'^(?P<value>"Plural-Forms.+?\\n")\s*$', re.MULTILINE | re.DOTALL)
STATUS_OK = 0
NO_LOCALE_DIR = object()
def check_programs(*programs):
for program in programs:
if find_command(program) is None:
raise CommandError(
"Can't find %s. Make sure you have GNU gettext tools 0.15 or "
"newer installed." % program
)
@total_ordering
class TranslatableFile:
def __init__(self, dirpath, file_name, locale_dir):
self.file = file_name
self.dirpath = dirpath
self.locale_dir = locale_dir
def __repr__(self):
return "<%s: %s>" % (
self.__class__.__name__,
os.sep.join([self.dirpath, self.file]),
)
def __eq__(self, other):
return self.path == other.path
def __lt__(self, other):
return self.path < other.path
@property
def path(self):
return os.path.join(self.dirpath, self.file)
class BuildFile:
"""
Represent the state of a translatable file during the build process.
"""
def __init__(self, command, domain, translatable):
self.command = command
self.domain = domain
self.translatable = translatable
@cached_property
def is_templatized(self):
if self.domain == 'djangojs':
return self.command.gettext_version < (0, 18, 3)
elif self.domain == 'django':
file_ext = os.path.splitext(self.translatable.file)[1]
return file_ext != '.py'
return False
@cached_property
def path(self):
return self.translatable.path
@cached_property
def work_path(self):
"""
Path to a file which is being fed into GNU gettext pipeline. This may
be either a translatable or its preprocessed version.
"""
if not self.is_templatized:
return self.path
extension = {
'djangojs': 'c',
'django': 'py',
}.get(self.domain)
filename = '%s.%s' % (self.translatable.file, extension)
return os.path.join(self.translatable.dirpath, filename)
def preprocess(self):
"""
Preprocess (if necessary) a translatable file before passing it to
xgettext GNU gettext utility.
"""
if not self.is_templatized:
return
encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
with open(self.path, encoding=encoding) as fp:
src_data = fp.read()
if self.domain == 'djangojs':
content = prepare_js_for_gettext(src_data)
elif self.domain == 'django':
content = templatize(src_data, origin=self.path[2:])
with open(self.work_path, 'w', encoding='utf-8') as fp:
fp.write(content)
def postprocess_messages(self, msgs):
"""
Postprocess messages generated by xgettext GNU gettext utility.
Transform paths as if these messages were generated from original
translatable files rather than from preprocessed versions.
"""
if not self.is_templatized:
return msgs
# Remove '.py' suffix
if os.name == 'nt':
# Preserve '.\' prefix on Windows to respect gettext behavior
old_path = self.work_path
new_path = self.path
else:
old_path = self.work_path[2:]
new_path = self.path[2:]
return re.sub(
r'^(#: .*)(' + re.escape(old_path) + r')',
lambda match: match.group().replace(old_path, new_path),
msgs,
flags=re.MULTILINE
)
def cleanup(self):
"""
Remove a preprocessed copy of a translatable file (if any).
"""
if self.is_templatized:
# This check is needed for the case of a symlinked file and its
# source being processed inside a single group (locale dir);
# removing either of those two removes both.
if os.path.exists(self.work_path):
os.unlink(self.work_path)
def normalize_eols(raw_contents):
"""
Take a block of raw text that will be passed through str.splitlines() to
get universal newlines treatment.
Return the resulting block of text with normalized `\n` EOL sequences ready
to be written to disk using current platform's native EOLs.
"""
lines_list = raw_contents.splitlines()
# Ensure last line has its EOL
if lines_list and lines_list[-1]:
lines_list.append('')
return '\n'.join(lines_list)
def write_pot_file(potfile, msgs):
"""
Write the `potfile` with the `msgs` contents, making sure its format is
valid.
"""
pot_lines = msgs.splitlines()
if os.path.exists(potfile):
# Strip the header
lines = dropwhile(len, pot_lines)
else:
lines = []
found, header_read = False, False
for line in pot_lines:
if not found and not header_read:
if 'charset=CHARSET' in line:
found = True
line = line.replace('charset=CHARSET', 'charset=UTF-8')
if not line and not found:
header_read = True
lines.append(line)
msgs = '\n'.join(lines)
# Force newlines of POT files to '\n' to work around
# https://savannah.gnu.org/bugs/index.php?52395
with open(potfile, 'a', encoding='utf-8', newline='\n') as fp:
fp.write(msgs)
class Command(BaseCommand):
help = (
"Runs over the entire source tree of the current directory and "
"pulls out all strings marked for translation. It creates (or updates) a message "
"file in the conf/locale (in the django tree) or locale (for projects and "
"applications) directory.\n\nYou must run this command with one of either the "
"--locale, --exclude, or --all options."
)
translatable_file_class = TranslatableFile
build_file_class = BuildFile
requires_system_checks = False
msgmerge_options = ['-q', '--previous']
msguniq_options = ['--to-code=utf-8']
msgattrib_options = ['--no-obsolete']
xgettext_options = ['--from-code=UTF-8', '--add-comments=Translators']
def add_arguments(self, parser):
parser.add_argument(
'--locale', '-l', default=[], action='append',
help='Creates or updates the message files for the given locale(s) (e.g. pt_BR). '
'Can be used multiple times.',
)
parser.add_argument(
'--exclude', '-x', default=[], action='append',
help='Locales to exclude. Default is none. Can be used multiple times.',
)
parser.add_argument(
'--domain', '-d', default='django',
help='The domain of the message files (default: "django").',
)
parser.add_argument(
'--all', '-a', action='store_true',
help='Updates the message files for all existing locales.',
)
parser.add_argument(
'--extension', '-e', dest='extensions', action='append',
help='The file extension(s) to examine (default: "html,txt,py", or "js" '
'if the domain is "djangojs"). Separate multiple extensions with '
'commas, or use -e multiple times.',
)
parser.add_argument(
'--symlinks', '-s', action='store_true',
help='Follows symlinks to directories when examining source code '
'and templates for translation strings.',
)
parser.add_argument(
'--ignore', '-i', action='append', dest='ignore_patterns',
default=[], metavar='PATTERN',
help='Ignore files or directories matching this glob-style pattern. '
'Use multiple times to ignore more.',
)
parser.add_argument(
'--no-default-ignore', action='store_false', dest='use_default_ignore_patterns',
help="Don't ignore the common glob-style patterns 'CVS', '.*', '*~' and '*.pyc'.",
)
parser.add_argument(
'--no-wrap', action='store_true',
help="Don't break long message lines into several lines.",
)
parser.add_argument(
'--no-location', action='store_true',
help="Don't write '#: filename:line' lines.",
)
parser.add_argument(
'--add-location',
choices=('full', 'file', 'never'), const='full', nargs='?',
help=(
"Controls '#: filename:line' lines. If the option is 'full' "
"(the default if not given), the lines include both file name "
"and line number. If it's 'file', the line number is omitted. If "
"it's 'never', the lines are suppressed (same as --no-location). "
"--add-location requires gettext 0.19 or newer."
),
)
parser.add_argument(
'--no-obsolete', action='store_true',
help="Remove obsolete message strings.",
)
parser.add_argument(
'--keep-pot', action='store_true',
help="Keep .pot file after making messages. Useful when debugging.",
)
def handle(self, *args, **options):
locale = options['locale']
exclude = options['exclude']
self.domain = options['domain']
self.verbosity = options['verbosity']
process_all = options['all']
extensions = options['extensions']
self.symlinks = options['symlinks']
ignore_patterns = options['ignore_patterns']
if options['use_default_ignore_patterns']:
ignore_patterns += ['CVS', '.*', '*~', '*.pyc']
self.ignore_patterns = list(set(ignore_patterns))
# Avoid messing with mutable class variables
if options['no_wrap']:
self.msgmerge_options = self.msgmerge_options[:] + ['--no-wrap']
self.msguniq_options = self.msguniq_options[:] + ['--no-wrap']
self.msgattrib_options = self.msgattrib_options[:] + ['--no-wrap']
self.xgettext_options = self.xgettext_options[:] + ['--no-wrap']
if options['no_location']:
self.msgmerge_options = self.msgmerge_options[:] + ['--no-location']
self.msguniq_options = self.msguniq_options[:] + ['--no-location']
self.msgattrib_options = self.msgattrib_options[:] + ['--no-location']
self.xgettext_options = self.xgettext_options[:] + ['--no-location']
if options['add_location']:
if self.gettext_version < (0, 19):
raise CommandError(
"The --add-location option requires gettext 0.19 or later. "
"You have %s." % '.'.join(str(x) for x in self.gettext_version)
)
arg_add_location = "--add-location=%s" % options['add_location']
self.msgmerge_options = self.msgmerge_options[:] + [arg_add_location]
self.msguniq_options = self.msguniq_options[:] + [arg_add_location]
self.msgattrib_options = self.msgattrib_options[:] + [arg_add_location]
self.xgettext_options = self.xgettext_options[:] + [arg_add_location]
self.no_obsolete = options['no_obsolete']
self.keep_pot = options['keep_pot']
if self.domain not in ('django', 'djangojs'):
raise CommandError("currently makemessages only supports domains "
"'django' and 'djangojs'")
if self.domain == 'djangojs':
exts = extensions or ['js']
else:
exts = extensions or ['html', 'txt', 'py']
self.extensions = handle_extensions(exts)
if (locale is None and not exclude and not process_all) or self.domain is None:
raise CommandError(
"Type '%s help %s' for usage information."
% (os.path.basename(sys.argv[0]), sys.argv[1])
)
if self.verbosity > 1:
self.stdout.write(
'examining files with the extensions: %s\n'
% get_text_list(list(self.extensions), 'and')
)
self.invoked_for_django = False
self.locale_paths = []
self.default_locale_path = None
if os.path.isdir(os.path.join('conf', 'locale')):
self.locale_paths = [os.path.abspath(os.path.join('conf', 'locale'))]
self.default_locale_path = self.locale_paths[0]
self.invoked_for_django = True
else:
if self.settings_available:
self.locale_paths.extend(settings.LOCALE_PATHS)
# Allow to run makemessages inside an app dir
if os.path.isdir('locale'):
self.locale_paths.append(os.path.abspath('locale'))
if self.locale_paths:
self.default_locale_path = self.locale_paths[0]
os.makedirs(self.default_locale_path, exist_ok=True)
# Build locale list
looks_like_locale = re.compile(r'[a-z]{2}')
locale_dirs = filter(os.path.isdir, glob.glob('%s/*' % self.default_locale_path))
all_locales = [
lang_code for lang_code in map(os.path.basename, locale_dirs)
if looks_like_locale.match(lang_code)
]
# Account for excluded locales
if process_all:
locales = all_locales
else:
locales = locale or all_locales
locales = set(locales).difference(exclude)
if locales:
check_programs('msguniq', 'msgmerge', 'msgattrib')
check_programs('xgettext')
try:
potfiles = self.build_potfiles()
# Build po files for each selected locale
for locale in locales:
if self.verbosity > 0:
self.stdout.write("processing locale %s\n" % locale)
for potfile in potfiles:
self.write_po_file(potfile, locale)
finally:
if not self.keep_pot:
self.remove_potfiles()
@cached_property
def gettext_version(self):
# Gettext tools will output system-encoded bytestrings instead of UTF-8,
# when looking up the version. It's especially a problem on Windows.
out, err, status = popen_wrapper(
['xgettext', '--version'],
stdout_encoding=DEFAULT_LOCALE_ENCODING,
)
m = re.search(r'(\d+)\.(\d+)\.?(\d+)?', out)
if m:
return tuple(int(d) for d in m.groups() if d is not None)
else:
raise CommandError("Unable to get gettext version. Is it installed?")
@cached_property
def settings_available(self):
try:
settings.LOCALE_PATHS
except ImproperlyConfigured:
if self.verbosity > 1:
self.stderr.write("Running without configured settings.")
return False
return True
def build_potfiles(self):
"""
Build pot files and apply msguniq to them.
"""
file_list = self.find_files(".")
self.remove_potfiles()
self.process_files(file_list)
potfiles = []
for path in self.locale_paths:
potfile = os.path.join(path, '%s.pot' % self.domain)
if not os.path.exists(potfile):
continue
args = ['msguniq'] + self.msguniq_options + [potfile]
msgs, errors, status = popen_wrapper(args)
if errors:
if status != STATUS_OK:
raise CommandError(
"errors happened while running msguniq\n%s" % errors)
elif self.verbosity > 0:
self.stdout.write(errors)
msgs = normalize_eols(msgs)
with open(potfile, 'w', encoding='utf-8') as fp:
fp.write(msgs)
potfiles.append(potfile)
return potfiles
def remove_potfiles(self):
for path in self.locale_paths:
pot_path = os.path.join(path, '%s.pot' % self.domain)
if os.path.exists(pot_path):
os.unlink(pot_path)
def find_files(self, root):
"""
Get all files in the given root. Also check that there is a matching
locale dir for each file.
"""
all_files = []
ignored_roots = []
if self.settings_available:
ignored_roots = [os.path.normpath(p) for p in (settings.MEDIA_ROOT, settings.STATIC_ROOT) if p]
for dirpath, dirnames, filenames in os.walk(root, topdown=True, followlinks=self.symlinks):
for dirname in dirnames[:]:
if (is_ignored_path(os.path.normpath(os.path.join(dirpath, dirname)), self.ignore_patterns) or
os.path.join(os.path.abspath(dirpath), dirname) in ignored_roots):
dirnames.remove(dirname)
if self.verbosity > 1:
self.stdout.write('ignoring directory %s\n' % dirname)
elif dirname == 'locale':
dirnames.remove(dirname)
self.locale_paths.insert(0, os.path.join(os.path.abspath(dirpath), dirname))
for filename in filenames:
file_path = os.path.normpath(os.path.join(dirpath, filename))
file_ext = os.path.splitext(filename)[1]
if file_ext not in self.extensions or is_ignored_path(file_path, self.ignore_patterns):
if self.verbosity > 1:
self.stdout.write('ignoring file %s in %s\n' % (filename, dirpath))
else:
locale_dir = None
for path in self.locale_paths:
if os.path.abspath(dirpath).startswith(os.path.dirname(path)):
locale_dir = path
break
locale_dir = locale_dir or self.default_locale_path or NO_LOCALE_DIR
all_files.append(self.translatable_file_class(dirpath, filename, locale_dir))
return sorted(all_files)
def process_files(self, file_list):
"""
Group translatable files by locale directory and run pot file build
process for each group.
"""
file_groups = {}
for translatable in file_list:
file_group = file_groups.setdefault(translatable.locale_dir, [])
file_group.append(translatable)
for locale_dir, files in file_groups.items():
self.process_locale_dir(locale_dir, files)
def process_locale_dir(self, locale_dir, files):
"""
Extract translatable literals from the specified files, creating or
updating the POT file for a given locale directory.
Use the xgettext GNU gettext utility.
"""
build_files = []
for translatable in files:
if self.verbosity > 1:
self.stdout.write('processing file %s in %s\n' % (
translatable.file, translatable.dirpath
))
if self.domain not in ('djangojs', 'django'):
continue
build_file = self.build_file_class(self, self.domain, translatable)
try:
build_file.preprocess()
except UnicodeDecodeError as e:
self.stdout.write(
'UnicodeDecodeError: skipped file %s in %s (reason: %s)' % (
translatable.file, translatable.dirpath, e,
)
)
continue
build_files.append(build_file)
if self.domain == 'djangojs':
is_templatized = build_file.is_templatized
args = [
'xgettext',
'-d', self.domain,
'--language=%s' % ('C' if is_templatized else 'JavaScript',),
'--keyword=gettext_noop',
'--keyword=gettext_lazy',
'--keyword=ngettext_lazy:1,2',
'--keyword=pgettext:1c,2',
'--keyword=npgettext:1c,2,3',
'--output=-',
]
elif self.domain == 'django':
args = [
'xgettext',
'-d', self.domain,
'--language=Python',
'--keyword=gettext_noop',
'--keyword=gettext_lazy',
'--keyword=ngettext_lazy:1,2',
'--keyword=ugettext_noop',
'--keyword=ugettext_lazy',
'--keyword=ungettext_lazy:1,2',
'--keyword=pgettext:1c,2',
'--keyword=npgettext:1c,2,3',
'--keyword=pgettext_lazy:1c,2',
'--keyword=npgettext_lazy:1c,2,3',
'--output=-',
]
else:
return
input_files = [bf.work_path for bf in build_files]
with NamedTemporaryFile(mode='w+') as input_files_list:
input_files_list.write(('\n'.join(input_files)))
input_files_list.flush()
args.extend(['--files-from', input_files_list.name])
args.extend(self.xgettext_options)
msgs, errors, status = popen_wrapper(args)
if errors:
if status != STATUS_OK:
for build_file in build_files:
build_file.cleanup()
raise CommandError(
'errors happened while running xgettext on %s\n%s' %
('\n'.join(input_files), errors)
)
elif self.verbosity > 0:
# Print warnings
self.stdout.write(errors)
if msgs:
if locale_dir is NO_LOCALE_DIR:
file_path = os.path.normpath(build_files[0].path)
raise CommandError(
'Unable to find a locale path to store translations for '
'file %s' % file_path
)
for build_file in build_files:
msgs = build_file.postprocess_messages(msgs)
potfile = os.path.join(locale_dir, '%s.pot' % self.domain)
write_pot_file(potfile, msgs)
for build_file in build_files:
build_file.cleanup()
def write_po_file(self, potfile, locale):
"""
Create or update the PO file for self.domain and `locale`.
Use contents of the existing `potfile`.
Use msgmerge and msgattrib GNU gettext utilities.
"""
basedir = os.path.join(os.path.dirname(potfile), locale, 'LC_MESSAGES')
os.makedirs(basedir, exist_ok=True)
pofile = os.path.join(basedir, '%s.po' % self.domain)
if os.path.exists(pofile):
args = ['msgmerge'] + self.msgmerge_options + [pofile, potfile]
msgs, errors, status = popen_wrapper(args)
if errors:
if status != STATUS_OK:
raise CommandError(
"errors happened while running msgmerge\n%s" % errors)
elif self.verbosity > 0:
self.stdout.write(errors)
else:
with open(potfile, encoding='utf-8') as fp:
msgs = fp.read()
if not self.invoked_for_django:
msgs = self.copy_plural_forms(msgs, locale)
msgs = normalize_eols(msgs)
msgs = msgs.replace(
"#. #-#-#-#-# %s.pot (PACKAGE VERSION) #-#-#-#-#\n" % self.domain, "")
with open(pofile, 'w', encoding='utf-8') as fp:
fp.write(msgs)
if self.no_obsolete:
args = ['msgattrib'] + self.msgattrib_options + ['-o', pofile, pofile]
msgs, errors, status = popen_wrapper(args)
if errors:
if status != STATUS_OK:
raise CommandError(
"errors happened while running msgattrib\n%s" % errors)
elif self.verbosity > 0:
self.stdout.write(errors)
def copy_plural_forms(self, msgs, locale):
"""
Copy plural forms header contents from a Django catalog of locale to
the msgs string, inserting it at the right place. msgs should be the
contents of a newly created .po file.
"""
django_dir = os.path.normpath(os.path.join(os.path.dirname(django.__file__)))
if self.domain == 'djangojs':
domains = ('djangojs', 'django')
else:
domains = ('django',)
for domain in domains:
django_po = os.path.join(django_dir, 'conf', 'locale', locale, 'LC_MESSAGES', '%s.po' % domain)
if os.path.exists(django_po):
with open(django_po, encoding='utf-8') as fp:
m = plural_forms_re.search(fp.read())
if m:
plural_form_line = m.group('value')
if self.verbosity > 1:
self.stdout.write("copying plural forms: %s\n" % plural_form_line)
lines = []
found = False
for line in msgs.splitlines():
if not found and (not line or plural_forms_re.search(line)):
line = plural_form_line
found = True
lines.append(line)
msgs = '\n'.join(lines)
break
return msgs
|
ec06f84d8e03eb9f47b3dfc7d26654e78d937e89f39c71600aa7287ad673c8c5 | from django.apps import apps
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
from django.db.migrations.executor import MigrationExecutor
from django.db.migrations.loader import AmbiguityError
class Command(BaseCommand):
help = "Prints the SQL statements for the named migration."
output_transaction = True
def add_arguments(self, parser):
parser.add_argument('app_label', help='App label of the application containing the migration.')
parser.add_argument('migration_name', help='Migration name to print the SQL for.')
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database to create SQL for. Defaults to the "default" database.',
)
parser.add_argument(
'--backwards', action='store_true',
help='Creates SQL to unapply the migration, rather than to apply it',
)
def execute(self, *args, **options):
# sqlmigrate doesn't support coloring its output but we need to force
# no_color=True so that the BEGIN/COMMIT statements added by
# output_transaction don't get colored either.
options['no_color'] = True
return super().execute(*args, **options)
def handle(self, *args, **options):
# Get the database we're operating from
connection = connections[options['database']]
# Load up an executor to get all the migration data
executor = MigrationExecutor(connection)
# Resolve command-line arguments into a migration
app_label, migration_name = options['app_label'], options['migration_name']
# Validate app_label
try:
apps.get_app_config(app_label)
except LookupError as err:
raise CommandError(str(err))
if app_label not in executor.loader.migrated_apps:
raise CommandError("App '%s' does not have migrations" % app_label)
try:
migration = executor.loader.get_migration_by_prefix(app_label, migration_name)
except AmbiguityError:
raise CommandError("More than one migration matches '%s' in app '%s'. Please be more specific." % (
migration_name, app_label))
except KeyError:
raise CommandError("Cannot find a migration matching '%s' from app '%s'. Is it in INSTALLED_APPS?" % (
migration_name, app_label))
targets = [(app_label, migration.name)]
# Show begin/end around output for atomic migrations, if the database
# supports transactional DDL.
self.output_transaction = migration.atomic and connection.features.can_rollback_ddl
# Make a plan that represents just the requested migrations and show SQL
# for it
plan = [(executor.loader.graph.nodes[targets[0]], options['backwards'])]
sql_statements = executor.collect_sql(plan)
return '\n'.join(sql_statements)
|
118b64cd5823feeb54a20b10ff2eeaa02a4c42f017635bb829c86d715747ee15 | import sys
from django.apps import apps
from django.core.management.base import BaseCommand
from django.db import DEFAULT_DB_ALIAS, connections
from django.db.migrations.loader import MigrationLoader
class Command(BaseCommand):
help = "Shows all available migrations for the current project"
def add_arguments(self, parser):
parser.add_argument(
'app_label', nargs='*',
help='App labels of applications to limit the output to.',
)
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database to synchronize. Defaults to the "default" database.',
)
formats = parser.add_mutually_exclusive_group()
formats.add_argument(
'--list', '-l', action='store_const', dest='format', const='list',
help=(
'Shows a list of all migrations and which are applied. '
'With a verbosity level of 2 or above, the applied datetimes '
'will be included.'
),
)
formats.add_argument(
'--plan', '-p', action='store_const', dest='format', const='plan',
help=(
'Shows all migrations in the order they will be applied. '
'With a verbosity level of 2 or above all direct migration dependencies '
'and reverse dependencies (run_before) will be included.'
)
)
parser.set_defaults(format='list')
def handle(self, *args, **options):
self.verbosity = options['verbosity']
# Get the database we're operating from
db = options['database']
connection = connections[db]
if options['format'] == "plan":
return self.show_plan(connection, options['app_label'])
else:
return self.show_list(connection, options['app_label'])
def _validate_app_names(self, loader, app_names):
has_bad_names = False
for app_name in app_names:
try:
apps.get_app_config(app_name)
except LookupError as err:
self.stderr.write(str(err))
has_bad_names = True
if has_bad_names:
sys.exit(2)
def show_list(self, connection, app_names=None):
"""
Show a list of all migrations on the system, or only those of
some named apps.
"""
# Load migrations from disk/DB
loader = MigrationLoader(connection, ignore_no_migrations=True)
graph = loader.graph
# If we were passed a list of apps, validate it
if app_names:
self._validate_app_names(loader, app_names)
# Otherwise, show all apps in alphabetic order
else:
app_names = sorted(loader.migrated_apps)
# For each app, print its migrations in order from oldest (roots) to
# newest (leaves).
for app_name in app_names:
self.stdout.write(app_name, self.style.MIGRATE_LABEL)
shown = set()
for node in graph.leaf_nodes(app_name):
for plan_node in graph.forwards_plan(node):
if plan_node not in shown and plan_node[0] == app_name:
# Give it a nice title if it's a squashed one
title = plan_node[1]
if graph.nodes[plan_node].replaces:
title += " (%s squashed migrations)" % len(graph.nodes[plan_node].replaces)
applied_migration = loader.applied_migrations.get(plan_node)
# Mark it as applied/unapplied
if applied_migration:
output = ' [X] %s' % title
if self.verbosity >= 2:
output += ' (applied at %s)' % applied_migration.applied.strftime('%Y-%m-%d %H:%M:%S')
self.stdout.write(output)
else:
self.stdout.write(" [ ] %s" % title)
shown.add(plan_node)
# If we didn't print anything, then a small message
if not shown:
self.stdout.write(" (no migrations)", self.style.ERROR)
def show_plan(self, connection, app_names=None):
"""
Show all known migrations (or only those of the specified app_names)
in the order they will be applied.
"""
# Load migrations from disk/DB
loader = MigrationLoader(connection)
graph = loader.graph
if app_names:
self._validate_app_names(loader, app_names)
targets = [key for key in graph.leaf_nodes() if key[0] in app_names]
else:
targets = graph.leaf_nodes()
plan = []
seen = set()
# Generate the plan
for target in targets:
for migration in graph.forwards_plan(target):
if migration not in seen:
node = graph.node_map[migration]
plan.append(node)
seen.add(migration)
# Output
def print_deps(node):
out = []
for parent in sorted(node.parents):
out.append("%s.%s" % parent.key)
if out:
return " ... (%s)" % ", ".join(out)
return ""
for node in plan:
deps = ""
if self.verbosity >= 2:
deps = print_deps(node)
if node.key in loader.applied_migrations:
self.stdout.write("[X] %s.%s%s" % (node.key[0], node.key[1], deps))
else:
self.stdout.write("[ ] %s.%s%s" % (node.key[0], node.key[1], deps))
if not plan:
self.stdout.write('(no migrations)', self.style.ERROR)
|
7e72f49378f9d640784de54745ca6ac30b59c0b1a77a18cc610585953a69a5dd | import keyword
import re
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
from django.db.models.constants import LOOKUP_SEP
class Command(BaseCommand):
help = "Introspects the database tables in the given database and outputs a Django model module."
requires_system_checks = False
stealth_options = ('table_name_filter',)
db_module = 'django.db'
def add_arguments(self, parser):
parser.add_argument(
'table', nargs='*', type=str,
help='Selects what tables or views should be introspected.',
)
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database to introspect. Defaults to using the "default" database.',
)
parser.add_argument(
'--include-partitions', action='store_true', help='Also output models for partition tables.',
)
parser.add_argument(
'--include-views', action='store_true', help='Also output models for database views.',
)
def handle(self, **options):
try:
for line in self.handle_inspection(options):
self.stdout.write("%s\n" % line)
except NotImplementedError:
raise CommandError("Database inspection isn't supported for the currently selected database backend.")
def handle_inspection(self, options):
connection = connections[options['database']]
# 'table_name_filter' is a stealth option
table_name_filter = options.get('table_name_filter')
def table2model(table_name):
return re.sub(r'[^a-zA-Z0-9]', '', table_name.title())
with connection.cursor() as cursor:
yield "# This is an auto-generated Django model module."
yield "# You'll have to do the following manually to clean this up:"
yield "# * Rearrange models' order"
yield "# * Make sure each model has one field with primary_key=True"
yield "# * Make sure each ForeignKey and OneToOneField has `on_delete` set to the desired behavior"
yield (
"# * Remove `managed = False` lines if you wish to allow "
"Django to create, modify, and delete the table"
)
yield "# Feel free to rename the models, but don't rename db_table values or field names."
yield 'from %s import models' % self.db_module
known_models = []
table_info = connection.introspection.get_table_list(cursor)
# Determine types of tables and/or views to be introspected.
types = {'t'}
if options['include_partitions']:
types.add('p')
if options['include_views']:
types.add('v')
for table_name in (options['table'] or sorted(info.name for info in table_info if info.type in types)):
if table_name_filter is not None and callable(table_name_filter):
if not table_name_filter(table_name):
continue
try:
try:
relations = connection.introspection.get_relations(cursor, table_name)
except NotImplementedError:
relations = {}
try:
constraints = connection.introspection.get_constraints(cursor, table_name)
except NotImplementedError:
constraints = {}
primary_key_column = connection.introspection.get_primary_key_column(cursor, table_name)
unique_columns = [
c['columns'][0] for c in constraints.values()
if c['unique'] and len(c['columns']) == 1
]
table_description = connection.introspection.get_table_description(cursor, table_name)
except Exception as e:
yield "# Unable to inspect table '%s'" % table_name
yield "# The error was: %s" % e
continue
yield ''
yield ''
yield 'class %s(models.Model):' % table2model(table_name)
known_models.append(table2model(table_name))
used_column_names = [] # Holds column names used in the table so far
column_to_field_name = {} # Maps column names to names of model fields
for row in table_description:
comment_notes = [] # Holds Field notes, to be displayed in a Python comment.
extra_params = {} # Holds Field parameters such as 'db_column'.
column_name = row.name
is_relation = column_name in relations
att_name, params, notes = self.normalize_col_name(
column_name, used_column_names, is_relation)
extra_params.update(params)
comment_notes.extend(notes)
used_column_names.append(att_name)
column_to_field_name[column_name] = att_name
# Add primary_key and unique, if necessary.
if column_name == primary_key_column:
extra_params['primary_key'] = True
elif column_name in unique_columns:
extra_params['unique'] = True
if is_relation:
if extra_params.pop('unique', False) or extra_params.get('primary_key'):
rel_type = 'OneToOneField'
else:
rel_type = 'ForeignKey'
rel_to = (
"self" if relations[column_name][1] == table_name
else table2model(relations[column_name][1])
)
if rel_to in known_models:
field_type = '%s(%s' % (rel_type, rel_to)
else:
field_type = "%s('%s'" % (rel_type, rel_to)
else:
# Calling `get_field_type` to get the field type string and any
# additional parameters and notes.
field_type, field_params, field_notes = self.get_field_type(connection, table_name, row)
extra_params.update(field_params)
comment_notes.extend(field_notes)
field_type += '('
# Don't output 'id = meta.AutoField(primary_key=True)', because
# that's assumed if it doesn't exist.
if att_name == 'id' and extra_params == {'primary_key': True}:
if field_type == 'AutoField(':
continue
elif field_type == 'IntegerField(' and not connection.features.can_introspect_autofield:
comment_notes.append('AutoField?')
# Add 'null' and 'blank', if the 'null_ok' flag was present in the
# table description.
if row.null_ok: # If it's NULL...
extra_params['blank'] = True
extra_params['null'] = True
field_desc = '%s = %s%s' % (
att_name,
# Custom fields will have a dotted path
'' if '.' in field_type else 'models.',
field_type,
)
if field_type.startswith(('ForeignKey(', 'OneToOneField(')):
field_desc += ', models.DO_NOTHING'
if extra_params:
if not field_desc.endswith('('):
field_desc += ', '
field_desc += ', '.join('%s=%r' % (k, v) for k, v in extra_params.items())
field_desc += ')'
if comment_notes:
field_desc += ' # ' + ' '.join(comment_notes)
yield ' %s' % field_desc
is_view = any(info.name == table_name and info.type == 'v' for info in table_info)
is_partition = any(info.name == table_name and info.type == 'p' for info in table_info)
for meta_line in self.get_meta(table_name, constraints, column_to_field_name, is_view, is_partition):
yield meta_line
def normalize_col_name(self, col_name, used_column_names, is_relation):
"""
Modify the column name to make it Python-compatible as a field name
"""
field_params = {}
field_notes = []
new_name = col_name.lower()
if new_name != col_name:
field_notes.append('Field name made lowercase.')
if is_relation:
if new_name.endswith('_id'):
new_name = new_name[:-3]
else:
field_params['db_column'] = col_name
new_name, num_repl = re.subn(r'\W', '_', new_name)
if num_repl > 0:
field_notes.append('Field renamed to remove unsuitable characters.')
if new_name.find(LOOKUP_SEP) >= 0:
while new_name.find(LOOKUP_SEP) >= 0:
new_name = new_name.replace(LOOKUP_SEP, '_')
if col_name.lower().find(LOOKUP_SEP) >= 0:
# Only add the comment if the double underscore was in the original name
field_notes.append("Field renamed because it contained more than one '_' in a row.")
if new_name.startswith('_'):
new_name = 'field%s' % new_name
field_notes.append("Field renamed because it started with '_'.")
if new_name.endswith('_'):
new_name = '%sfield' % new_name
field_notes.append("Field renamed because it ended with '_'.")
if keyword.iskeyword(new_name):
new_name += '_field'
field_notes.append('Field renamed because it was a Python reserved word.')
if new_name[0].isdigit():
new_name = 'number_%s' % new_name
field_notes.append("Field renamed because it wasn't a valid Python identifier.")
if new_name in used_column_names:
num = 0
while '%s_%d' % (new_name, num) in used_column_names:
num += 1
new_name = '%s_%d' % (new_name, num)
field_notes.append('Field renamed because of name conflict.')
if col_name != new_name and field_notes:
field_params['db_column'] = col_name
return new_name, field_params, field_notes
def get_field_type(self, connection, table_name, row):
"""
Given the database connection, the table name, and the cursor row
description, this routine will return the given field type name, as
well as any additional keyword parameters and notes for the field.
"""
field_params = {}
field_notes = []
try:
field_type = connection.introspection.get_field_type(row.type_code, row)
except KeyError:
field_type = 'TextField'
field_notes.append('This field type is a guess.')
# Add max_length for all CharFields.
if field_type == 'CharField' and row.internal_size:
field_params['max_length'] = int(row.internal_size)
if field_type == 'DecimalField':
if row.precision is None or row.scale is None:
field_notes.append(
'max_digits and decimal_places have been guessed, as this '
'database handles decimal fields as float')
field_params['max_digits'] = row.precision if row.precision is not None else 10
field_params['decimal_places'] = row.scale if row.scale is not None else 5
else:
field_params['max_digits'] = row.precision
field_params['decimal_places'] = row.scale
return field_type, field_params, field_notes
def get_meta(self, table_name, constraints, column_to_field_name, is_view, is_partition):
"""
Return a sequence comprising the lines of code necessary
to construct the inner Meta class for the model corresponding
to the given database table name.
"""
unique_together = []
has_unsupported_constraint = False
for params in constraints.values():
if params['unique']:
columns = params['columns']
if None in columns:
has_unsupported_constraint = True
columns = [x for x in columns if x is not None]
if len(columns) > 1:
unique_together.append(str(tuple(column_to_field_name[c] for c in columns)))
if is_view:
managed_comment = " # Created from a view. Don't remove."
elif is_partition:
managed_comment = " # Created from a partition. Don't remove."
else:
managed_comment = ''
meta = ['']
if has_unsupported_constraint:
meta.append(' # A unique constraint could not be introspected.')
meta += [
' class Meta:',
' managed = False%s' % managed_comment,
' db_table = %r' % table_name
]
if unique_together:
tup = '(' + ', '.join(unique_together) + ',)'
meta += [" unique_together = %s" % tup]
return meta
|
0f6552bdc13851842b0e3ac41ef497a75525ada67ff619eabccb017e46744233 | import os
import sys
from itertools import takewhile
from django.apps import apps
from django.conf import settings
from django.core.management.base import (
BaseCommand, CommandError, no_translations,
)
from django.db import DEFAULT_DB_ALIAS, connections, router
from django.db.migrations import Migration
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.loader import MigrationLoader
from django.db.migrations.questioner import (
InteractiveMigrationQuestioner, MigrationQuestioner,
NonInteractiveMigrationQuestioner,
)
from django.db.migrations.state import ProjectState
from django.db.migrations.utils import get_migration_name_timestamp
from django.db.migrations.writer import MigrationWriter
class Command(BaseCommand):
help = "Creates new migration(s) for apps."
def add_arguments(self, parser):
parser.add_argument(
'args', metavar='app_label', nargs='*',
help='Specify the app label(s) to create migrations for.',
)
parser.add_argument(
'--dry-run', action='store_true',
help="Just show what migrations would be made; don't actually write them.",
)
parser.add_argument(
'--merge', action='store_true',
help="Enable fixing of migration conflicts.",
)
parser.add_argument(
'--empty', action='store_true',
help="Create an empty migration.",
)
parser.add_argument(
'--noinput', '--no-input', action='store_false', dest='interactive',
help='Tells Django to NOT prompt the user for input of any kind.',
)
parser.add_argument(
'-n', '--name',
help="Use this name for migration file(s).",
)
parser.add_argument(
'--no-header', action='store_false', dest='include_header',
help='Do not add header comments to new migration file(s).',
)
parser.add_argument(
'--check', action='store_true', dest='check_changes',
help='Exit with a non-zero status if model changes are missing migrations.',
)
@no_translations
def handle(self, *app_labels, **options):
self.verbosity = options['verbosity']
self.interactive = options['interactive']
self.dry_run = options['dry_run']
self.merge = options['merge']
self.empty = options['empty']
self.migration_name = options['name']
if self.migration_name and not self.migration_name.isidentifier():
raise CommandError('The migration name must be a valid Python identifier.')
self.include_header = options['include_header']
check_changes = options['check_changes']
# Make sure the app they asked for exists
app_labels = set(app_labels)
has_bad_labels = False
for app_label in app_labels:
try:
apps.get_app_config(app_label)
except LookupError as err:
self.stderr.write(str(err))
has_bad_labels = True
if has_bad_labels:
sys.exit(2)
# Load the current graph state. Pass in None for the connection so
# the loader doesn't try to resolve replaced migrations from DB.
loader = MigrationLoader(None, ignore_no_migrations=True)
# Raise an error if any migrations are applied before their dependencies.
consistency_check_labels = {config.label for config in apps.get_app_configs()}
# Non-default databases are only checked if database routers used.
aliases_to_check = connections if settings.DATABASE_ROUTERS else [DEFAULT_DB_ALIAS]
for alias in sorted(aliases_to_check):
connection = connections[alias]
if (connection.settings_dict['ENGINE'] != 'django.db.backends.dummy' and any(
# At least one model must be migrated to the database.
router.allow_migrate(connection.alias, app_label, model_name=model._meta.object_name)
for app_label in consistency_check_labels
for model in apps.get_app_config(app_label).get_models()
)):
loader.check_consistent_history(connection)
# Before anything else, see if there's conflicting apps and drop out
# hard if there are any and they don't want to merge
conflicts = loader.detect_conflicts()
# If app_labels is specified, filter out conflicting migrations for unspecified apps
if app_labels:
conflicts = {
app_label: conflict for app_label, conflict in conflicts.items()
if app_label in app_labels
}
if conflicts and not self.merge:
name_str = "; ".join(
"%s in %s" % (", ".join(names), app)
for app, names in conflicts.items()
)
raise CommandError(
"Conflicting migrations detected; multiple leaf nodes in the "
"migration graph: (%s).\nTo fix them run "
"'python manage.py makemigrations --merge'" % name_str
)
# If they want to merge and there's nothing to merge, then politely exit
if self.merge and not conflicts:
self.stdout.write("No conflicts detected to merge.")
return
# If they want to merge and there is something to merge, then
# divert into the merge code
if self.merge and conflicts:
return self.handle_merge(loader, conflicts)
if self.interactive:
questioner = InteractiveMigrationQuestioner(specified_apps=app_labels, dry_run=self.dry_run)
else:
questioner = NonInteractiveMigrationQuestioner(specified_apps=app_labels, dry_run=self.dry_run)
# Set up autodetector
autodetector = MigrationAutodetector(
loader.project_state(),
ProjectState.from_apps(apps),
questioner,
)
# If they want to make an empty migration, make one for each app
if self.empty:
if not app_labels:
raise CommandError("You must supply at least one app label when using --empty.")
# Make a fake changes() result we can pass to arrange_for_graph
changes = {
app: [Migration("custom", app)]
for app in app_labels
}
changes = autodetector.arrange_for_graph(
changes=changes,
graph=loader.graph,
migration_name=self.migration_name,
)
self.write_migration_files(changes)
return
# Detect changes
changes = autodetector.changes(
graph=loader.graph,
trim_to_apps=app_labels or None,
convert_apps=app_labels or None,
migration_name=self.migration_name,
)
if not changes:
# No changes? Tell them.
if self.verbosity >= 1:
if app_labels:
if len(app_labels) == 1:
self.stdout.write("No changes detected in app '%s'" % app_labels.pop())
else:
self.stdout.write("No changes detected in apps '%s'" % ("', '".join(app_labels)))
else:
self.stdout.write("No changes detected")
else:
self.write_migration_files(changes)
if check_changes:
sys.exit(1)
def write_migration_files(self, changes):
"""
Take a changes dict and write them out as migration files.
"""
directory_created = {}
for app_label, app_migrations in changes.items():
if self.verbosity >= 1:
self.stdout.write(self.style.MIGRATE_HEADING("Migrations for '%s':" % app_label) + "\n")
for migration in app_migrations:
# Describe the migration
writer = MigrationWriter(migration, self.include_header)
if self.verbosity >= 1:
# Display a relative path if it's below the current working
# directory, or an absolute path otherwise.
try:
migration_string = os.path.relpath(writer.path)
except ValueError:
migration_string = writer.path
if migration_string.startswith('..'):
migration_string = writer.path
self.stdout.write(" %s\n" % (self.style.MIGRATE_LABEL(migration_string),))
for operation in migration.operations:
self.stdout.write(" - %s\n" % operation.describe())
if not self.dry_run:
# Write the migrations file to the disk.
migrations_directory = os.path.dirname(writer.path)
if not directory_created.get(app_label):
os.makedirs(migrations_directory, exist_ok=True)
init_path = os.path.join(migrations_directory, "__init__.py")
if not os.path.isfile(init_path):
open(init_path, "w").close()
# We just do this once per app
directory_created[app_label] = True
migration_string = writer.as_string()
with open(writer.path, "w", encoding='utf-8') as fh:
fh.write(migration_string)
elif self.verbosity == 3:
# Alternatively, makemigrations --dry-run --verbosity 3
# will output the migrations to stdout rather than saving
# the file to the disk.
self.stdout.write(self.style.MIGRATE_HEADING(
"Full migrations file '%s':" % writer.filename) + "\n"
)
self.stdout.write("%s\n" % writer.as_string())
def handle_merge(self, loader, conflicts):
"""
Handles merging together conflicted migrations interactively,
if it's safe; otherwise, advises on how to fix it.
"""
if self.interactive:
questioner = InteractiveMigrationQuestioner()
else:
questioner = MigrationQuestioner(defaults={'ask_merge': True})
for app_label, migration_names in conflicts.items():
# Grab out the migrations in question, and work out their
# common ancestor.
merge_migrations = []
for migration_name in migration_names:
migration = loader.get_migration(app_label, migration_name)
migration.ancestry = [
mig for mig in loader.graph.forwards_plan((app_label, migration_name))
if mig[0] == migration.app_label
]
merge_migrations.append(migration)
def all_items_equal(seq):
return all(item == seq[0] for item in seq[1:])
merge_migrations_generations = zip(*(m.ancestry for m in merge_migrations))
common_ancestor_count = sum(1 for common_ancestor_generation
in takewhile(all_items_equal, merge_migrations_generations))
if not common_ancestor_count:
raise ValueError("Could not find common ancestor of %s" % migration_names)
# Now work out the operations along each divergent branch
for migration in merge_migrations:
migration.branch = migration.ancestry[common_ancestor_count:]
migrations_ops = (loader.get_migration(node_app, node_name).operations
for node_app, node_name in migration.branch)
migration.merged_operations = sum(migrations_ops, [])
# In future, this could use some of the Optimizer code
# (can_optimize_through) to automatically see if they're
# mergeable. For now, we always just prompt the user.
if self.verbosity > 0:
self.stdout.write(self.style.MIGRATE_HEADING("Merging %s" % app_label))
for migration in merge_migrations:
self.stdout.write(self.style.MIGRATE_LABEL(" Branch %s" % migration.name))
for operation in migration.merged_operations:
self.stdout.write(" - %s\n" % operation.describe())
if questioner.ask_merge(app_label):
# If they still want to merge it, then write out an empty
# file depending on the migrations needing merging.
numbers = [
MigrationAutodetector.parse_number(migration.name)
for migration in merge_migrations
]
try:
biggest_number = max(x for x in numbers if x is not None)
except ValueError:
biggest_number = 1
subclass = type("Migration", (Migration,), {
"dependencies": [(app_label, migration.name) for migration in merge_migrations],
})
migration_name = "%04i_%s" % (
biggest_number + 1,
self.migration_name or ("merge_%s" % get_migration_name_timestamp())
)
new_migration = subclass(migration_name, app_label)
writer = MigrationWriter(new_migration, self.include_header)
if not self.dry_run:
# Write the merge migrations file to the disk
with open(writer.path, "w", encoding='utf-8') as fh:
fh.write(writer.as_string())
if self.verbosity > 0:
self.stdout.write("\nCreated new merge migration %s" % writer.path)
elif self.verbosity == 3:
# Alternatively, makemigrations --merge --dry-run --verbosity 3
# will output the merge migrations to stdout rather than saving
# the file to the disk.
self.stdout.write(self.style.MIGRATE_HEADING(
"Full merge migrations file '%s':" % writer.filename) + "\n"
)
self.stdout.write("%s\n" % writer.as_string())
|
b56eb0488abf4f11ab792341127075640a8a006fe2eb14a739803299ea883ac9 | import os
import select
import sys
import traceback
from django.core.management import BaseCommand, CommandError
from django.utils.datastructures import OrderedSet
class Command(BaseCommand):
help = (
"Runs a Python interactive interpreter. Tries to use IPython or "
"bpython, if one of them is available. Any standard input is executed "
"as code."
)
requires_system_checks = False
shells = ['ipython', 'bpython', 'python']
def add_arguments(self, parser):
parser.add_argument(
'--no-startup', action='store_true',
help='When using plain Python, ignore the PYTHONSTARTUP environment variable and ~/.pythonrc.py script.',
)
parser.add_argument(
'-i', '--interface', choices=self.shells,
help='Specify an interactive interpreter interface. Available options: "ipython", "bpython", and "python"',
)
parser.add_argument(
'-c', '--command',
help='Instead of opening an interactive shell, run a command as Django and exit.',
)
def ipython(self, options):
from IPython import start_ipython
start_ipython(argv=[])
def bpython(self, options):
import bpython
bpython.embed()
def python(self, options):
import code
# Set up a dictionary to serve as the environment for the shell, so
# that tab completion works on objects that are imported at runtime.
imported_objects = {}
try: # Try activating rlcompleter, because it's handy.
import readline
except ImportError:
pass
else:
# We don't have to wrap the following import in a 'try', because
# we already know 'readline' was imported successfully.
import rlcompleter
readline.set_completer(rlcompleter.Completer(imported_objects).complete)
# Enable tab completion on systems using libedit (e.g. macOS).
# These lines are copied from Python's Lib/site.py.
readline_doc = getattr(readline, '__doc__', '')
if readline_doc is not None and 'libedit' in readline_doc:
readline.parse_and_bind("bind ^I rl_complete")
else:
readline.parse_and_bind("tab:complete")
# We want to honor both $PYTHONSTARTUP and .pythonrc.py, so follow system
# conventions and get $PYTHONSTARTUP first then .pythonrc.py.
if not options['no_startup']:
for pythonrc in OrderedSet([os.environ.get("PYTHONSTARTUP"), os.path.expanduser('~/.pythonrc.py')]):
if not pythonrc:
continue
if not os.path.isfile(pythonrc):
continue
with open(pythonrc) as handle:
pythonrc_code = handle.read()
# Match the behavior of the cpython shell where an error in
# PYTHONSTARTUP prints an exception and continues.
try:
exec(compile(pythonrc_code, pythonrc, 'exec'), imported_objects)
except Exception:
traceback.print_exc()
code.interact(local=imported_objects)
def handle(self, **options):
# Execute the command and exit.
if options['command']:
exec(options['command'])
return
# Execute stdin if it has anything to read and exit.
# Not supported on Windows due to select.select() limitations.
if sys.platform != 'win32' and not sys.stdin.isatty() and select.select([sys.stdin], [], [], 0)[0]:
exec(sys.stdin.read())
return
available_shells = [options['interface']] if options['interface'] else self.shells
for shell in available_shells:
try:
return getattr(self, shell)(options)
except ImportError:
pass
raise CommandError("Couldn't import {} interface.".format(shell))
|
1cf9e47840638b9a5019cd364de4a99e8d8063db986efad4a00989225bbb4728 | "File-based cache backend"
import glob
import hashlib
import os
import pickle
import random
import tempfile
import time
import zlib
from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
from django.core.files import locks
from django.core.files.move import file_move_safe
class FileBasedCache(BaseCache):
cache_suffix = '.djcache'
pickle_protocol = pickle.HIGHEST_PROTOCOL
def __init__(self, dir, params):
super().__init__(params)
self._dir = os.path.abspath(dir)
self._createdir()
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
if self.has_key(key, version):
return False
self.set(key, value, timeout, version)
return True
def get(self, key, default=None, version=None):
fname = self._key_to_file(key, version)
try:
with open(fname, 'rb') as f:
if not self._is_expired(f):
return pickle.loads(zlib.decompress(f.read()))
except FileNotFoundError:
pass
return default
def _write_content(self, file, timeout, value):
expiry = self.get_backend_timeout(timeout)
file.write(pickle.dumps(expiry, self.pickle_protocol))
file.write(zlib.compress(pickle.dumps(value, self.pickle_protocol)))
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
self._createdir() # Cache dir can be deleted at any time.
fname = self._key_to_file(key, version)
self._cull() # make some room if necessary
fd, tmp_path = tempfile.mkstemp(dir=self._dir)
renamed = False
try:
with open(fd, 'wb') as f:
self._write_content(f, timeout, value)
file_move_safe(tmp_path, fname, allow_overwrite=True)
renamed = True
finally:
if not renamed:
os.remove(tmp_path)
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
try:
with open(self._key_to_file(key, version), 'r+b') as f:
try:
locks.lock(f, locks.LOCK_EX)
if self._is_expired(f):
return False
else:
previous_value = pickle.loads(zlib.decompress(f.read()))
f.seek(0)
self._write_content(f, timeout, previous_value)
return True
finally:
locks.unlock(f)
except FileNotFoundError:
return False
def delete(self, key, version=None):
self._delete(self._key_to_file(key, version))
def _delete(self, fname):
if not fname.startswith(self._dir) or not os.path.exists(fname):
return
try:
os.remove(fname)
except FileNotFoundError:
# The file may have been removed by another process.
pass
def has_key(self, key, version=None):
fname = self._key_to_file(key, version)
if os.path.exists(fname):
with open(fname, 'rb') as f:
return not self._is_expired(f)
return False
def _cull(self):
"""
Remove random cache entries if max_entries is reached at a ratio
of num_entries / cull_frequency. A value of 0 for CULL_FREQUENCY means
that the entire cache will be purged.
"""
filelist = self._list_cache_files()
num_entries = len(filelist)
if num_entries < self._max_entries:
return # return early if no culling is required
if self._cull_frequency == 0:
return self.clear() # Clear the cache when CULL_FREQUENCY = 0
# Delete a random selection of entries
filelist = random.sample(filelist,
int(num_entries / self._cull_frequency))
for fname in filelist:
self._delete(fname)
def _createdir(self):
os.makedirs(self._dir, 0o700, exist_ok=True)
def _key_to_file(self, key, version=None):
"""
Convert a key into a cache file path. Basically this is the
root cache path joined with the md5sum of the key and a suffix.
"""
key = self.make_key(key, version=version)
self.validate_key(key)
return os.path.join(self._dir, ''.join(
[hashlib.md5(key.encode()).hexdigest(), self.cache_suffix]))
def clear(self):
"""
Remove all the cache files.
"""
for fname in self._list_cache_files():
self._delete(fname)
def _is_expired(self, f):
"""
Take an open cache file `f` and delete it if it's expired.
"""
try:
exp = pickle.load(f)
except EOFError:
exp = 0 # An empty file is considered expired.
if exp is not None and exp < time.time():
f.close() # On Windows a file has to be closed before deleting
self._delete(f.name)
return True
return False
def _list_cache_files(self):
"""
Get a list of paths to all the cache files. These are all the files
in the root cache dir that end on the cache_suffix.
"""
return [
os.path.join(self._dir, fname)
for fname in glob.glob1(self._dir, '*%s' % self.cache_suffix)
]
|
856ebffeb2ff458064bd0546474edf750f723c374783e03efeb173dbb7cac678 | "Memcached cache backend"
import pickle
import re
import time
from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
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
# The exception type to catch from the underlying library for a key
# that was not found. This is a ValueError for python-memcache,
# pylibmc.NotFound for pylibmc, and cmemcache will return None without
# raising an exception.
self.LibraryValueNotFoundException = value_not_found_exception
self._lib = library
self._options = params.get('OPTIONS') or {}
@property
def _cache(self):
"""
Implement transparent thread-safe access to a memcached client.
"""
if getattr(self, '_client', None) is None:
self._client = self._lib.Client(self._servers, **self._options)
return self._client
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_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_key(key, version=version)
return self._cache.get(key, default)
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_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 delete(self, key, version=None):
key = self.make_key(key, version=version)
self._cache.delete(key)
def get_many(self, keys, version=None):
key_map = {self.make_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_key(key, version=version)
# memcached doesn't support a negative delta
if delta < 0:
return self._cache.decr(key, -delta)
try:
val = self._cache.incr(key, delta)
# python-memcache responds to incr on nonexistent keys by
# raising a ValueError, pylibmc by raising a pylibmc.NotFound
# and Cmemcache returns None. In all cases,
# we should raise a ValueError though.
except self.LibraryValueNotFoundException:
val = None
if val is None:
raise ValueError("Key '%s' not found" % key)
return val
def decr(self, key, delta=1, version=None):
key = self.make_key(key, version=version)
# memcached doesn't support a negative delta
if delta < 0:
return self._cache.incr(key, -delta)
try:
val = self._cache.decr(key, delta)
# python-memcache responds to incr on nonexistent keys by
# raising a ValueError, pylibmc by raising a pylibmc.NotFound
# and Cmemcache returns None. In all cases,
# we should raise a ValueError though.
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_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):
self._cache.delete_multi(self.make_key(key, version=version) for key in keys)
def clear(self):
self._cache.flush_all()
class MemcachedCache(BaseMemcachedCache):
"An implementation of a cache binding using python-memcached"
def __init__(self, server, params):
import memcache
super().__init__(server, params, library=memcache, value_not_found_exception=ValueError)
@property
def _cache(self):
if getattr(self, '_client', None) is None:
client_kwargs = {'pickleProtocol': pickle.HIGHEST_PROTOCOL}
client_kwargs.update(self._options)
self._client = self._lib.Client(self._servers, **client_kwargs)
return self._client
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
return self._cache.touch(key, self.get_backend_timeout(timeout)) != 0
def get(self, key, default=None, version=None):
key = self.make_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
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)
@cached_property
def _cache(self):
return self._lib.Client(self._servers, **self._options)
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_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
|
52e5ef21ab17a5163597c404094f12a133ba0c6c4bd8b699044f3f4f1f419043 | "Database cache backend."
import base64
import pickle
from datetime import datetime
from django.conf import settings
from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
from django.db import DatabaseError, connections, models, router, transaction
from django.utils import timezone
class Options:
"""A class that will quack like a Django model _meta class.
This allows cache operations to be controlled by the router
"""
def __init__(self, table):
self.db_table = table
self.app_label = 'django_cache'
self.model_name = 'cacheentry'
self.verbose_name = 'cache entry'
self.verbose_name_plural = 'cache entries'
self.object_name = 'CacheEntry'
self.abstract = False
self.managed = True
self.proxy = False
self.swapped = False
class BaseDatabaseCache(BaseCache):
def __init__(self, table, params):
super().__init__(params)
self._table = table
class CacheEntry:
_meta = Options(table)
self.cache_model_class = CacheEntry
class DatabaseCache(BaseDatabaseCache):
# This class uses cursors provided by the database connection. This means
# it reads expiration values as aware or naive datetimes, depending on the
# value of USE_TZ and whether the database supports time zones. The ORM's
# conversion and adaptation infrastructure is then used to avoid comparing
# aware and naive datetimes accidentally.
pickle_protocol = pickle.HIGHEST_PROTOCOL
def get(self, key, default=None, version=None):
return self.get_many([key], version).get(key, default)
def get_many(self, keys, version=None):
if not keys:
return {}
key_map = {}
for key in keys:
self.validate_key(key)
key_map[self.make_key(key, version)] = key
db = router.db_for_read(self.cache_model_class)
connection = connections[db]
quote_name = connection.ops.quote_name
table = quote_name(self._table)
with connection.cursor() as cursor:
cursor.execute(
'SELECT %s, %s, %s FROM %s WHERE %s IN (%s)' % (
quote_name('cache_key'),
quote_name('value'),
quote_name('expires'),
table,
quote_name('cache_key'),
', '.join(['%s'] * len(key_map)),
),
list(key_map),
)
rows = cursor.fetchall()
result = {}
expired_keys = []
expression = models.Expression(output_field=models.DateTimeField())
converters = (connection.ops.get_db_converters(expression) + expression.get_db_converters(connection))
for key, value, expires in rows:
for converter in converters:
expires = converter(expires, expression, connection)
if expires < timezone.now():
expired_keys.append(key)
else:
value = connection.ops.process_clob(value)
value = pickle.loads(base64.b64decode(value.encode()))
result[key_map.get(key)] = value
self._base_delete_many(expired_keys)
return result
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
self._base_set('set', key, value, timeout)
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
return self._base_set('add', key, value, timeout)
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
return self._base_set('touch', key, None, timeout)
def _base_set(self, mode, key, value, timeout=DEFAULT_TIMEOUT):
timeout = self.get_backend_timeout(timeout)
db = router.db_for_write(self.cache_model_class)
connection = connections[db]
quote_name = connection.ops.quote_name
table = quote_name(self._table)
with connection.cursor() as cursor:
cursor.execute("SELECT COUNT(*) FROM %s" % table)
num = cursor.fetchone()[0]
now = timezone.now()
now = now.replace(microsecond=0)
if timeout is None:
exp = datetime.max
elif settings.USE_TZ:
exp = datetime.utcfromtimestamp(timeout)
else:
exp = datetime.fromtimestamp(timeout)
exp = exp.replace(microsecond=0)
if num > self._max_entries:
self._cull(db, cursor, now)
pickled = pickle.dumps(value, self.pickle_protocol)
# The DB column is expecting a string, so make sure the value is a
# string, not bytes. Refs #19274.
b64encoded = base64.b64encode(pickled).decode('latin1')
try:
# Note: typecasting for datetimes is needed by some 3rd party
# database backends. All core backends work without typecasting,
# so be careful about changes here - test suite will NOT pick
# regressions.
with transaction.atomic(using=db):
cursor.execute(
'SELECT %s, %s FROM %s WHERE %s = %%s' % (
quote_name('cache_key'),
quote_name('expires'),
table,
quote_name('cache_key'),
),
[key]
)
result = cursor.fetchone()
if result:
current_expires = result[1]
expression = models.Expression(output_field=models.DateTimeField())
for converter in (connection.ops.get_db_converters(expression) +
expression.get_db_converters(connection)):
current_expires = converter(current_expires, expression, connection)
exp = connection.ops.adapt_datetimefield_value(exp)
if result and mode == 'touch':
cursor.execute(
'UPDATE %s SET %s = %%s WHERE %s = %%s' % (
table,
quote_name('expires'),
quote_name('cache_key')
),
[exp, key]
)
elif result and (mode == 'set' or (mode == 'add' and current_expires < now)):
cursor.execute(
'UPDATE %s SET %s = %%s, %s = %%s WHERE %s = %%s' % (
table,
quote_name('value'),
quote_name('expires'),
quote_name('cache_key'),
),
[b64encoded, exp, key]
)
elif mode != 'touch':
cursor.execute(
'INSERT INTO %s (%s, %s, %s) VALUES (%%s, %%s, %%s)' % (
table,
quote_name('cache_key'),
quote_name('value'),
quote_name('expires'),
),
[key, b64encoded, exp]
)
else:
return False # touch failed.
except DatabaseError:
# To be threadsafe, updates/inserts are allowed to fail silently
return False
else:
return True
def delete(self, key, version=None):
self.delete_many([key], version)
def delete_many(self, keys, version=None):
key_list = []
for key in keys:
self.validate_key(key)
key_list.append(self.make_key(key, version))
self._base_delete_many(key_list)
def _base_delete_many(self, keys):
if not keys:
return
db = router.db_for_write(self.cache_model_class)
connection = connections[db]
quote_name = connection.ops.quote_name
table = quote_name(self._table)
with connection.cursor() as cursor:
cursor.execute(
'DELETE FROM %s WHERE %s IN (%s)' % (
table,
quote_name('cache_key'),
', '.join(['%s'] * len(keys)),
),
keys,
)
def has_key(self, key, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
db = router.db_for_read(self.cache_model_class)
connection = connections[db]
quote_name = connection.ops.quote_name
if settings.USE_TZ:
now = datetime.utcnow()
else:
now = datetime.now()
now = now.replace(microsecond=0)
with connection.cursor() as cursor:
cursor.execute(
'SELECT %s FROM %s WHERE %s = %%s and expires > %%s' % (
quote_name('cache_key'),
quote_name(self._table),
quote_name('cache_key'),
),
[key, connection.ops.adapt_datetimefield_value(now)]
)
return cursor.fetchone() is not None
def _cull(self, db, cursor, now):
if self._cull_frequency == 0:
self.clear()
else:
connection = connections[db]
table = connection.ops.quote_name(self._table)
cursor.execute("DELETE FROM %s WHERE expires < %%s" % table,
[connection.ops.adapt_datetimefield_value(now)])
cursor.execute("SELECT COUNT(*) FROM %s" % table)
num = cursor.fetchone()[0]
if num > self._max_entries:
cull_num = num // self._cull_frequency
cursor.execute(
connection.ops.cache_key_culling_sql() % table,
[cull_num])
cursor.execute("DELETE FROM %s "
"WHERE cache_key < %%s" % table,
[cursor.fetchone()[0]])
def clear(self):
db = router.db_for_write(self.cache_model_class)
connection = connections[db]
table = connection.ops.quote_name(self._table)
with connection.cursor() as cursor:
cursor.execute('DELETE FROM %s' % table)
|
da00d07480befb93d357978be88e0ef8ffed1f8021b38fc33ce2c646840c7210 | "Base Cache class."
import time
import warnings
from django.core.exceptions import ImproperlyConfigured
from django.utils.module_loading import import_string
class InvalidCacheBackendError(ImproperlyConfigured):
pass
class CacheKeyWarning(RuntimeWarning):
pass
# Stub class to ensure not passing in a `timeout` argument results in
# the default timeout
DEFAULT_TIMEOUT = object()
# Memcached does not accept keys longer than this.
MEMCACHE_MAX_KEY_LENGTH = 250
def default_key_func(key, key_prefix, version):
"""
Default function to generate keys.
Construct the key used by all other methods. By default, prepend
the `key_prefix'. KEY_FUNCTION can be used to specify an alternate
function with custom key making behavior.
"""
return '%s:%s:%s' % (key_prefix, version, key)
def get_key_func(key_func):
"""
Function to decide which key function to use.
Default to ``default_key_func``.
"""
if key_func is not None:
if callable(key_func):
return key_func
else:
return import_string(key_func)
return default_key_func
class BaseCache:
def __init__(self, params):
timeout = params.get('timeout', params.get('TIMEOUT', 300))
if timeout is not None:
try:
timeout = int(timeout)
except (ValueError, TypeError):
timeout = 300
self.default_timeout = timeout
options = params.get('OPTIONS', {})
max_entries = params.get('max_entries', options.get('MAX_ENTRIES', 300))
try:
self._max_entries = int(max_entries)
except (ValueError, TypeError):
self._max_entries = 300
cull_frequency = params.get('cull_frequency', options.get('CULL_FREQUENCY', 3))
try:
self._cull_frequency = int(cull_frequency)
except (ValueError, TypeError):
self._cull_frequency = 3
self.key_prefix = params.get('KEY_PREFIX', '')
self.version = params.get('VERSION', 1)
self.key_func = get_key_func(params.get('KEY_FUNCTION'))
def get_backend_timeout(self, timeout=DEFAULT_TIMEOUT):
"""
Return the timeout value usable by this backend based upon the provided
timeout.
"""
if timeout == DEFAULT_TIMEOUT:
timeout = self.default_timeout
elif timeout == 0:
# ticket 21147 - avoid time.time() related precision issues
timeout = -1
return None if timeout is None else time.time() + timeout
def make_key(self, key, version=None):
"""
Construct the key used by all other methods. By default, use the
key_func to generate a key (which, by default, prepends the
`key_prefix' and 'version'). A different key function can be provided
at the time of cache construction; alternatively, you can subclass the
cache backend to provide custom key making behavior.
"""
if version is None:
version = self.version
return self.key_func(key, self.key_prefix, version)
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
"""
Set a value in the cache if the key does not already exist. If
timeout is given, use that timeout for the key; otherwise use the
default cache timeout.
Return True if the value was stored, False otherwise.
"""
raise NotImplementedError('subclasses of BaseCache must provide an add() method')
def get(self, key, default=None, version=None):
"""
Fetch a given key from the cache. If the key does not exist, return
default, which itself defaults to None.
"""
raise NotImplementedError('subclasses of BaseCache must provide a get() method')
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
"""
Set a value in the cache. If timeout is given, use that timeout for the
key; otherwise use the default cache timeout.
"""
raise NotImplementedError('subclasses of BaseCache must provide a set() method')
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
"""
Update the key's expiry time using timeout. Return True if successful
or False if the key does not exist.
"""
raise NotImplementedError('subclasses of BaseCache must provide a touch() method')
def delete(self, key, version=None):
"""
Delete a key from the cache, failing silently.
"""
raise NotImplementedError('subclasses of BaseCache must provide a delete() method')
def get_many(self, keys, version=None):
"""
Fetch a bunch of keys from the cache. For certain backends (memcached,
pgsql) this can be *much* faster when fetching multiple values.
Return a dict mapping each key in keys to its value. If the given
key is missing, it will be missing from the response dict.
"""
d = {}
for k in keys:
val = self.get(k, version=version)
if val is not None:
d[k] = val
return d
def get_or_set(self, key, default, timeout=DEFAULT_TIMEOUT, version=None):
"""
Fetch a given key from the cache. If the key does not exist,
add the key and set it to the default value. The default value can
also be any callable. If timeout is given, use that timeout for the
key; otherwise use the default cache timeout.
Return the value of the key stored or retrieved.
"""
val = self.get(key, version=version)
if val is None:
if callable(default):
default = default()
if default is not None:
self.add(key, default, timeout=timeout, version=version)
# Fetch the value again to avoid a race condition if another
# caller added a value between the first get() and the add()
# above.
return self.get(key, default, version=version)
return val
def has_key(self, key, version=None):
"""
Return True if the key is in the cache and has not expired.
"""
return self.get(key, version=version) is not None
def incr(self, key, delta=1, version=None):
"""
Add delta to value in the cache. If the key does not exist, raise a
ValueError exception.
"""
value = self.get(key, version=version)
if value is None:
raise ValueError("Key '%s' not found" % key)
new_value = value + delta
self.set(key, new_value, version=version)
return new_value
def decr(self, key, delta=1, version=None):
"""
Subtract delta from value in the cache. If the key does not exist, raise
a ValueError exception.
"""
return self.incr(key, -delta, version=version)
def __contains__(self, key):
"""
Return True if the key is in the cache and has not expired.
"""
# This is a separate method, rather than just a copy of has_key(),
# so that it always has the same functionality as has_key(), even
# if a subclass overrides it.
return self.has_key(key)
def set_many(self, data, timeout=DEFAULT_TIMEOUT, version=None):
"""
Set a bunch of values in the cache at once from a dict of key/value
pairs. For certain backends (memcached), this is much more efficient
than calling set() multiple times.
If timeout is given, use that timeout for the key; otherwise use the
default cache timeout.
On backends that support it, return a list of keys that failed
insertion, or an empty list if all keys were inserted successfully.
"""
for key, value in data.items():
self.set(key, value, timeout=timeout, version=version)
return []
def delete_many(self, keys, version=None):
"""
Delete a bunch of values in the cache at once. For certain backends
(memcached), this is much more efficient than calling delete() multiple
times.
"""
for key in keys:
self.delete(key, version=version)
def clear(self):
"""Remove *all* values from the cache at once."""
raise NotImplementedError('subclasses of BaseCache must provide a clear() method')
def validate_key(self, key):
"""
Warn about keys that would not be portable to the memcached
backend. This encourages (but does not force) writing backend-portable
cache code.
"""
if len(key) > MEMCACHE_MAX_KEY_LENGTH:
warnings.warn(
'Cache key will cause errors if used with memcached: %r '
'(longer than %s)' % (key, MEMCACHE_MAX_KEY_LENGTH), CacheKeyWarning
)
for char in key:
if ord(char) < 33 or ord(char) == 127:
warnings.warn(
'Cache key contains characters that will cause errors if '
'used with memcached: %r' % key, CacheKeyWarning
)
break
def incr_version(self, key, delta=1, version=None):
"""
Add delta to the cache version for the supplied key. Return the new
version.
"""
if version is None:
version = self.version
value = self.get(key, version=version)
if value is None:
raise ValueError("Key '%s' not found" % key)
self.set(key, value, version=version + delta)
self.delete(key, version=version)
return version + delta
def decr_version(self, key, delta=1, version=None):
"""
Subtract delta from the cache version for the supplied key. Return the
new version.
"""
return self.incr_version(key, -delta, version)
def close(self, **kwargs):
"""Close the cache connection"""
pass
|
d27bee92e13950fbae61a18d953875c5bb71c45f54ef8c9cd23bdc086b5a2f58 | "Thread-safe in-memory cache backend."
import pickle
import time
from collections import OrderedDict
from threading import Lock
from django.core.cache.backends.base import DEFAULT_TIMEOUT, BaseCache
# Global in-memory store of cache data. Keyed by name, to provide
# multiple named local memory caches.
_caches = {}
_expire_info = {}
_locks = {}
class LocMemCache(BaseCache):
pickle_protocol = pickle.HIGHEST_PROTOCOL
def __init__(self, name, params):
super().__init__(params)
self._cache = _caches.setdefault(name, OrderedDict())
self._expire_info = _expire_info.setdefault(name, {})
self._lock = _locks.setdefault(name, Lock())
def add(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = pickle.dumps(value, self.pickle_protocol)
with self._lock:
if self._has_expired(key):
self._set(key, pickled, timeout)
return True
return False
def get(self, key, default=None, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
with self._lock:
if self._has_expired(key):
self._delete(key)
return default
pickled = self._cache[key]
self._cache.move_to_end(key, last=False)
return pickle.loads(pickled)
def _set(self, key, value, timeout=DEFAULT_TIMEOUT):
if len(self._cache) >= self._max_entries:
self._cull()
self._cache[key] = value
self._cache.move_to_end(key, last=False)
self._expire_info[key] = self.get_backend_timeout(timeout)
def set(self, key, value, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
pickled = pickle.dumps(value, self.pickle_protocol)
with self._lock:
self._set(key, pickled, timeout)
def touch(self, key, timeout=DEFAULT_TIMEOUT, version=None):
key = self.make_key(key, version=version)
with self._lock:
if self._has_expired(key):
return False
self._expire_info[key] = self.get_backend_timeout(timeout)
return True
def incr(self, key, delta=1, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
with self._lock:
if self._has_expired(key):
self._delete(key)
raise ValueError("Key '%s' not found" % key)
pickled = self._cache[key]
value = pickle.loads(pickled)
new_value = value + delta
pickled = pickle.dumps(new_value, self.pickle_protocol)
self._cache[key] = pickled
self._cache.move_to_end(key, last=False)
return new_value
def has_key(self, key, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
with self._lock:
if self._has_expired(key):
self._delete(key)
return False
return True
def _has_expired(self, key):
exp = self._expire_info.get(key, -1)
return exp is not None and exp <= time.time()
def _cull(self):
if self._cull_frequency == 0:
self._cache.clear()
self._expire_info.clear()
else:
count = len(self._cache) // self._cull_frequency
for i in range(count):
key, _ = self._cache.popitem()
del self._expire_info[key]
def _delete(self, key):
try:
del self._cache[key]
del self._expire_info[key]
except KeyError:
pass
def delete(self, key, version=None):
key = self.make_key(key, version=version)
self.validate_key(key)
with self._lock:
self._delete(key)
def clear(self):
with self._lock:
self._cache.clear()
self._expire_info.clear()
|
d49568df1736699c430469ebb139c1c1fafb23b0f05b9bd0fda8f9ac7dff9a49 | """Email backend that writes messages to a file."""
import datetime
import os
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.core.mail.backends.console import (
EmailBackend as ConsoleEmailBackend,
)
class EmailBackend(ConsoleEmailBackend):
def __init__(self, *args, file_path=None, **kwargs):
self._fname = None
if file_path is not None:
self.file_path = file_path
else:
self.file_path = getattr(settings, 'EMAIL_FILE_PATH', None)
# Make sure self.file_path is a string.
if not isinstance(self.file_path, str):
raise ImproperlyConfigured('Path for saving emails is invalid: %r' % self.file_path)
self.file_path = os.path.abspath(self.file_path)
try:
os.makedirs(self.file_path, exist_ok=True)
except FileExistsError:
raise ImproperlyConfigured(
'Path for saving email messages exists, but is not a directory: %s' % self.file_path
)
except OSError as err:
raise ImproperlyConfigured(
'Could not create directory for saving email messages: %s (%s)' % (self.file_path, err)
)
# Make sure that self.file_path is writable.
if not os.access(self.file_path, os.W_OK):
raise ImproperlyConfigured('Could not write to directory: %s' % self.file_path)
# Finally, call super().
# Since we're using the console-based backend as a base,
# force the stream to be None, so we don't default to stdout
kwargs['stream'] = None
super().__init__(*args, **kwargs)
def write_message(self, message):
self.stream.write(message.message().as_bytes() + b'\n')
self.stream.write(b'-' * 79)
self.stream.write(b'\n')
def _get_filename(self):
"""Return a unique file name."""
if self._fname is None:
timestamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
fname = "%s-%s.log" % (timestamp, abs(id(self)))
self._fname = os.path.join(self.file_path, fname)
return self._fname
def open(self):
if self.stream is None:
self.stream = open(self._get_filename(), 'ab')
return True
return False
def close(self):
try:
if self.stream is not None:
self.stream.close()
finally:
self.stream = None
|
c09dc8b18f78bacb773ed5c352ef957f9f41b9151920a6f48af27b602a1c28bd | """SMTP email backend class."""
import smtplib
import ssl
import threading
from django.conf import settings
from django.core.mail.backends.base import BaseEmailBackend
from django.core.mail.message import sanitize_address
from django.core.mail.utils import DNS_NAME
class EmailBackend(BaseEmailBackend):
"""
A wrapper that manages the SMTP network connection.
"""
def __init__(self, host=None, port=None, username=None, password=None,
use_tls=None, fail_silently=False, use_ssl=None, timeout=None,
ssl_keyfile=None, ssl_certfile=None,
**kwargs):
super().__init__(fail_silently=fail_silently)
self.host = host or settings.EMAIL_HOST
self.port = port or settings.EMAIL_PORT
self.username = settings.EMAIL_HOST_USER if username is None else username
self.password = settings.EMAIL_HOST_PASSWORD if password is None else password
self.use_tls = settings.EMAIL_USE_TLS if use_tls is None else use_tls
self.use_ssl = settings.EMAIL_USE_SSL if use_ssl is None else use_ssl
self.timeout = settings.EMAIL_TIMEOUT if timeout is None else timeout
self.ssl_keyfile = settings.EMAIL_SSL_KEYFILE if ssl_keyfile is None else ssl_keyfile
self.ssl_certfile = settings.EMAIL_SSL_CERTFILE if ssl_certfile is None else ssl_certfile
if self.use_ssl and self.use_tls:
raise ValueError(
"EMAIL_USE_TLS/EMAIL_USE_SSL are mutually exclusive, so only set "
"one of those settings to True.")
self.connection = None
self._lock = threading.RLock()
@property
def connection_class(self):
return smtplib.SMTP_SSL if self.use_ssl else smtplib.SMTP
def open(self):
"""
Ensure an open connection to the email server. Return whether or not a
new connection was required (True or False) or None if an exception
passed silently.
"""
if self.connection:
# Nothing to do if the connection is already open.
return False
# If local_hostname is not specified, socket.getfqdn() gets used.
# For performance, we use the cached FQDN for local_hostname.
connection_params = {'local_hostname': DNS_NAME.get_fqdn()}
if self.timeout is not None:
connection_params['timeout'] = self.timeout
if self.use_ssl:
connection_params.update({
'keyfile': self.ssl_keyfile,
'certfile': self.ssl_certfile,
})
try:
self.connection = self.connection_class(self.host, self.port, **connection_params)
# TLS/SSL are mutually exclusive, so only attempt TLS over
# non-secure connections.
if not self.use_ssl and self.use_tls:
self.connection.starttls(keyfile=self.ssl_keyfile, certfile=self.ssl_certfile)
if self.username and self.password:
self.connection.login(self.username, self.password)
return True
except OSError:
if not self.fail_silently:
raise
def close(self):
"""Close the connection to the email server."""
if self.connection is None:
return
try:
try:
self.connection.quit()
except (ssl.SSLError, smtplib.SMTPServerDisconnected):
# This happens when calling quit() on a TLS connection
# sometimes, or when the connection was already disconnected
# by the server.
self.connection.close()
except smtplib.SMTPException:
if self.fail_silently:
return
raise
finally:
self.connection = None
def send_messages(self, email_messages):
"""
Send one or more EmailMessage objects and return the number of email
messages sent.
"""
if not email_messages:
return 0
with self._lock:
new_conn_created = self.open()
if not self.connection or new_conn_created is None:
# We failed silently on open().
# Trying to send would be pointless.
return 0
num_sent = 0
for message in email_messages:
sent = self._send(message)
if sent:
num_sent += 1
if new_conn_created:
self.close()
return num_sent
def _send(self, email_message):
"""A helper method that does the actual sending."""
if not email_message.recipients():
return False
encoding = email_message.encoding or settings.DEFAULT_CHARSET
from_email = sanitize_address(email_message.from_email, encoding)
recipients = [sanitize_address(addr, encoding) for addr in email_message.recipients()]
message = email_message.message()
try:
self.connection.sendmail(from_email, recipients, message.as_bytes(linesep='\r\n'))
except smtplib.SMTPException:
if not self.fail_silently:
raise
return False
return True
|
148e10a051a06388fd515b78677f96e0cf070c17501f3ab5d3dcbb806d8dbb9b | from urllib.parse import urlencode
from urllib.request import urlopen
from django.apps import apps as django_apps
from django.conf import settings
from django.core import paginator
from django.core.exceptions import ImproperlyConfigured
from django.urls import NoReverseMatch, reverse
from django.utils import translation
PING_URL = "https://www.google.com/webmasters/tools/ping"
class SitemapNotFound(Exception):
pass
def ping_google(sitemap_url=None, ping_url=PING_URL, sitemap_uses_https=True):
"""
Alert Google that the sitemap for the current site has been updated.
If sitemap_url is provided, it should be an absolute path to the sitemap
for this site -- e.g., '/sitemap.xml'. If sitemap_url is not provided, this
function will attempt to deduce it by using urls.reverse().
"""
sitemap_full_url = _get_sitemap_full_url(sitemap_url, sitemap_uses_https)
params = urlencode({'sitemap': sitemap_full_url})
urlopen('%s?%s' % (ping_url, params))
def _get_sitemap_full_url(sitemap_url, sitemap_uses_https=True):
if not django_apps.is_installed('django.contrib.sites'):
raise ImproperlyConfigured("ping_google requires django.contrib.sites, which isn't installed.")
if sitemap_url is None:
try:
# First, try to get the "index" sitemap URL.
sitemap_url = reverse('django.contrib.sitemaps.views.index')
except NoReverseMatch:
try:
# Next, try for the "global" sitemap URL.
sitemap_url = reverse('django.contrib.sitemaps.views.sitemap')
except NoReverseMatch:
pass
if sitemap_url is None:
raise SitemapNotFound("You didn't provide a sitemap_url, and the sitemap URL couldn't be auto-detected.")
Site = django_apps.get_model('sites.Site')
current_site = Site.objects.get_current()
scheme = 'https' if sitemap_uses_https else 'http'
return '%s://%s%s' % (scheme, current_site.domain, sitemap_url)
class Sitemap:
# This limit is defined by Google. See the index documentation at
# https://www.sitemaps.org/protocol.html#index.
limit = 50000
# If protocol is None, the URLs in the sitemap will use the protocol
# with which the sitemap was requested.
protocol = None
def __get(self, name, obj, default=None):
try:
attr = getattr(self, name)
except AttributeError:
return default
if callable(attr):
return attr(obj)
return attr
def items(self):
return []
def location(self, obj):
return obj.get_absolute_url()
@property
def paginator(self):
return paginator.Paginator(self.items(), self.limit)
def get_urls(self, page=1, site=None, protocol=None):
# Determine protocol
if self.protocol is not None:
protocol = self.protocol
if protocol is None:
protocol = 'http'
# Determine domain
if site is None:
if django_apps.is_installed('django.contrib.sites'):
Site = django_apps.get_model('sites.Site')
try:
site = Site.objects.get_current()
except Site.DoesNotExist:
pass
if site is None:
raise ImproperlyConfigured(
"To use sitemaps, either enable the sites framework or pass "
"a Site/RequestSite object in your view."
)
domain = site.domain
if getattr(self, 'i18n', False):
urls = []
current_lang_code = translation.get_language()
for lang_code, lang_name in settings.LANGUAGES:
translation.activate(lang_code)
urls += self._urls(page, protocol, domain)
translation.activate(current_lang_code)
else:
urls = self._urls(page, protocol, domain)
return urls
def _urls(self, page, protocol, domain):
urls = []
latest_lastmod = None
all_items_lastmod = True # track if all items have a lastmod
for item in self.paginator.page(page).object_list:
loc = "%s://%s%s" % (protocol, domain, self.__get('location', item))
priority = self.__get('priority', item)
lastmod = self.__get('lastmod', item)
if all_items_lastmod:
all_items_lastmod = lastmod is not None
if (all_items_lastmod and
(latest_lastmod is None or lastmod > latest_lastmod)):
latest_lastmod = lastmod
url_info = {
'item': item,
'location': loc,
'lastmod': lastmod,
'changefreq': self.__get('changefreq', item),
'priority': str(priority if priority is not None else ''),
}
urls.append(url_info)
if all_items_lastmod and latest_lastmod:
self.latest_lastmod = latest_lastmod
return urls
class GenericSitemap(Sitemap):
priority = None
changefreq = None
def __init__(self, info_dict, priority=None, changefreq=None, protocol=None):
self.queryset = info_dict['queryset']
self.date_field = info_dict.get('date_field')
self.priority = priority
self.changefreq = changefreq
self.protocol = protocol
def items(self):
# Make sure to return a clone; we don't want premature evaluation.
return self.queryset.filter()
def lastmod(self, item):
if self.date_field is not None:
return getattr(item, self.date_field)
return None
default_app_config = 'django.contrib.sitemaps.apps.SiteMapsConfig'
|
f06ee04be923906b952bfb8da0989b55290cce89a7f76db5e47c5f4a378f58a2 | "Misc. utility functions/classes for admin documentation generator."
import re
from email.errors import HeaderParseError
from email.parser import HeaderParser
from django.urls import reverse
from django.utils.safestring import mark_safe
try:
import docutils.core
import docutils.nodes
import docutils.parsers.rst.roles
except ImportError:
docutils_is_available = False
else:
docutils_is_available = True
def get_view_name(view_func):
mod_name = view_func.__module__
view_name = getattr(view_func, '__qualname__', view_func.__class__.__name__)
return mod_name + '.' + view_name
def trim_docstring(docstring):
"""
Uniformly trim leading/trailing whitespace from docstrings.
Based on https://www.python.org/dev/peps/pep-0257/#handling-docstring-indentation
"""
if not docstring or not docstring.strip():
return ''
# Convert tabs to spaces and split into lines
lines = docstring.expandtabs().splitlines()
indent = min(len(line) - len(line.lstrip()) for line in lines if line.lstrip())
trimmed = [lines[0].lstrip()] + [line[indent:].rstrip() for line in lines[1:]]
return "\n".join(trimmed).strip()
def parse_docstring(docstring):
"""
Parse out the parts of a docstring. Return (title, body, metadata).
"""
docstring = trim_docstring(docstring)
parts = re.split(r'\n{2,}', docstring)
title = parts[0]
if len(parts) == 1:
body = ''
metadata = {}
else:
parser = HeaderParser()
try:
metadata = parser.parsestr(parts[-1])
except HeaderParseError:
metadata = {}
body = "\n\n".join(parts[1:])
else:
metadata = dict(metadata.items())
if metadata:
body = "\n\n".join(parts[1:-1])
else:
body = "\n\n".join(parts[1:])
return title, body, metadata
def parse_rst(text, default_reference_context, thing_being_parsed=None):
"""
Convert the string from reST to an XHTML fragment.
"""
overrides = {
'doctitle_xform': True,
'initial_header_level': 3,
"default_reference_context": default_reference_context,
"link_base": reverse('django-admindocs-docroot').rstrip('/'),
'raw_enabled': False,
'file_insertion_enabled': False,
}
thing_being_parsed = thing_being_parsed and '<%s>' % thing_being_parsed
# Wrap ``text`` in some reST that sets the default role to ``cmsreference``,
# then restores it.
source = """
.. default-role:: cmsreference
%s
.. default-role::
"""
parts = docutils.core.publish_parts(
source % text,
source_path=thing_being_parsed, destination_path=None,
writer_name='html', settings_overrides=overrides,
)
return mark_safe(parts['fragment'])
#
# reST roles
#
ROLES = {
'model': '%s/models/%s/',
'view': '%s/views/%s/',
'template': '%s/templates/%s/',
'filter': '%s/filters/#%s',
'tag': '%s/tags/#%s',
}
def create_reference_role(rolename, urlbase):
def _role(name, rawtext, text, lineno, inliner, options=None, content=None):
if options is None:
options = {}
node = docutils.nodes.reference(
rawtext,
text,
refuri=(urlbase % (
inliner.document.settings.link_base,
text.lower(),
)),
**options
)
return [node], []
docutils.parsers.rst.roles.register_canonical_role(rolename, _role)
def default_reference_role(name, rawtext, text, lineno, inliner, options=None, content=None):
if options is None:
options = {}
context = inliner.document.settings.default_reference_context
node = docutils.nodes.reference(
rawtext,
text,
refuri=(ROLES[context] % (
inliner.document.settings.link_base,
text.lower(),
)),
**options
)
return [node], []
if docutils_is_available:
docutils.parsers.rst.roles.register_canonical_role('cmsreference', default_reference_role)
for name, urlbase in ROLES.items():
create_reference_role(name, urlbase)
# Match the beginning of a named or unnamed group.
named_group_matcher = re.compile(r'\(\?P(<\w+>)')
unnamed_group_matcher = re.compile(r'\(')
def replace_named_groups(pattern):
r"""
Find named groups in `pattern` and replace them with the group name. E.g.,
1. ^(?P<a>\w+)/b/(\w+)$ ==> ^<a>/b/(\w+)$
2. ^(?P<a>\w+)/b/(?P<c>\w+)/$ ==> ^<a>/b/<c>/$
"""
named_group_indices = [
(m.start(0), m.end(0), m.group(1))
for m in named_group_matcher.finditer(pattern)
]
# Tuples of (named capture group pattern, group name).
group_pattern_and_name = []
# Loop over the groups and their start and end indices.
for start, end, group_name in named_group_indices:
# Handle nested parentheses, e.g. '^(?P<a>(x|y))/b'.
unmatched_open_brackets, prev_char = 1, None
for idx, val in enumerate(pattern[end:]):
# If brackets are balanced, the end of the string for the current
# named capture group pattern has been reached.
if unmatched_open_brackets == 0:
group_pattern_and_name.append((pattern[start:end + idx], group_name))
break
# Check for unescaped `(` and `)`. They mark the start and end of a
# nested group.
if val == '(' and prev_char != '\\':
unmatched_open_brackets += 1
elif val == ')' and prev_char != '\\':
unmatched_open_brackets -= 1
prev_char = val
# Replace the string for named capture groups with their group names.
for group_pattern, group_name in group_pattern_and_name:
pattern = pattern.replace(group_pattern, group_name)
return pattern
def replace_unnamed_groups(pattern):
r"""
Find unnamed groups in `pattern` and replace them with '<var>'. E.g.,
1. ^(?P<a>\w+)/b/(\w+)$ ==> ^(?P<a>\w+)/b/<var>$
2. ^(?P<a>\w+)/b/((x|y)\w+)$ ==> ^(?P<a>\w+)/b/<var>$
"""
unnamed_group_indices = [m.start(0) for m in unnamed_group_matcher.finditer(pattern)]
# Indices of the start of unnamed capture groups.
group_indices = []
# Loop over the start indices of the groups.
for start in unnamed_group_indices:
# Handle nested parentheses, e.g. '^b/((x|y)\w+)$'.
unmatched_open_brackets, prev_char = 1, None
for idx, val in enumerate(pattern[start + 1:]):
if unmatched_open_brackets == 0:
group_indices.append((start, start + 1 + idx))
break
# Check for unescaped `(` and `)`. They mark the start and end of
# a nested group.
if val == '(' and prev_char != '\\':
unmatched_open_brackets += 1
elif val == ')' and prev_char != '\\':
unmatched_open_brackets -= 1
prev_char = val
# Remove unnamed group matches inside other unnamed capture groups.
group_start_end_indices = []
prev_end = None
for start, end in group_indices:
if prev_end and start > prev_end or not prev_end:
group_start_end_indices.append((start, end))
prev_end = end
if group_start_end_indices:
# Replace unnamed groups with <var>. Handle the fact that replacing the
# string between indices will change string length and thus indices
# will point to the wrong substring if not corrected.
final_pattern, prev_end = [], None
for start, end in group_start_end_indices:
if prev_end:
final_pattern.append(pattern[prev_end:start])
final_pattern.append(pattern[:start] + '<var>')
prev_end = end
final_pattern.append(pattern[prev_end:])
return ''.join(final_pattern)
else:
return pattern
|
de9d6e478af41a06b505fb155f6bf669f575f577bf54e4b04e3f4117e7bdb307 | import inspect
from importlib import import_module
from pathlib import Path
from django.apps import apps
from django.conf import settings
from django.contrib import admin
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.admindocs import utils
from django.contrib.admindocs.utils import (
replace_named_groups, replace_unnamed_groups,
)
from django.core.exceptions import ImproperlyConfigured, ViewDoesNotExist
from django.db import models
from django.http import Http404
from django.template.engine import Engine
from django.urls import get_mod_func, get_resolver, get_urlconf
from django.utils.decorators import method_decorator
from django.utils.inspect import (
func_accepts_kwargs, func_accepts_var_args, get_func_full_args,
method_has_no_args,
)
from django.utils.translation import gettext as _
from django.views.generic import TemplateView
from .utils import get_view_name
# Exclude methods starting with these strings from documentation
MODEL_METHODS_EXCLUDE = ('_', 'add_', 'delete', 'save', 'set_')
class BaseAdminDocsView(TemplateView):
"""
Base view for admindocs views.
"""
@method_decorator(staff_member_required)
def dispatch(self, request, *args, **kwargs):
if not utils.docutils_is_available:
# Display an error message for people without docutils
self.template_name = 'admin_doc/missing_docutils.html'
return self.render_to_response(admin.site.each_context(request))
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
return super().get_context_data(**{
**kwargs,
**admin.site.each_context(self.request),
})
class BookmarkletsView(BaseAdminDocsView):
template_name = 'admin_doc/bookmarklets.html'
class TemplateTagIndexView(BaseAdminDocsView):
template_name = 'admin_doc/template_tag_index.html'
def get_context_data(self, **kwargs):
tags = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [('', lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for tag_name, tag_func in library.tags.items():
title, body, metadata = utils.parse_docstring(tag_func.__doc__)
title = title and utils.parse_rst(title, 'tag', _('tag:') + tag_name)
body = body and utils.parse_rst(body, 'tag', _('tag:') + tag_name)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'tag', _('tag:') + tag_name)
tag_library = module_name.split('.')[-1]
tags.append({
'name': tag_name,
'title': title,
'body': body,
'meta': metadata,
'library': tag_library,
})
return super().get_context_data(**{**kwargs, 'tags': tags})
class TemplateFilterIndexView(BaseAdminDocsView):
template_name = 'admin_doc/template_filter_index.html'
def get_context_data(self, **kwargs):
filters = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [('', lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for filter_name, filter_func in library.filters.items():
title, body, metadata = utils.parse_docstring(filter_func.__doc__)
title = title and utils.parse_rst(title, 'filter', _('filter:') + filter_name)
body = body and utils.parse_rst(body, 'filter', _('filter:') + filter_name)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'filter', _('filter:') + filter_name)
tag_library = module_name.split('.')[-1]
filters.append({
'name': filter_name,
'title': title,
'body': body,
'meta': metadata,
'library': tag_library,
})
return super().get_context_data(**{**kwargs, 'filters': filters})
class ViewIndexView(BaseAdminDocsView):
template_name = 'admin_doc/view_index.html'
def get_context_data(self, **kwargs):
views = []
urlconf = import_module(settings.ROOT_URLCONF)
view_functions = extract_views_from_urlpatterns(urlconf.urlpatterns)
for (func, regex, namespace, name) in view_functions:
views.append({
'full_name': get_view_name(func),
'url': simplify_regex(regex),
'url_name': ':'.join((namespace or []) + (name and [name] or [])),
'namespace': ':'.join((namespace or [])),
'name': name,
})
return super().get_context_data(**{**kwargs, 'views': views})
class ViewDetailView(BaseAdminDocsView):
template_name = 'admin_doc/view_detail.html'
@staticmethod
def _get_view_func(view):
urlconf = get_urlconf()
if get_resolver(urlconf)._is_callback(view):
mod, func = get_mod_func(view)
try:
# Separate the module and function, e.g.
# 'mymodule.views.myview' -> 'mymodule.views', 'myview').
return getattr(import_module(mod), func)
except ImportError:
# Import may fail because view contains a class name, e.g.
# 'mymodule.views.ViewContainer.my_view', so mod takes the form
# 'mymodule.views.ViewContainer'. Parse it again to separate
# the module and class.
mod, klass = get_mod_func(mod)
return getattr(getattr(import_module(mod), klass), func)
def get_context_data(self, **kwargs):
view = self.kwargs['view']
view_func = self._get_view_func(view)
if view_func is None:
raise Http404
title, body, metadata = utils.parse_docstring(view_func.__doc__)
title = title and utils.parse_rst(title, 'view', _('view:') + view)
body = body and utils.parse_rst(body, 'view', _('view:') + view)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'model', _('view:') + view)
return super().get_context_data(**{
**kwargs,
'name': view,
'summary': title,
'body': body,
'meta': metadata,
})
class ModelIndexView(BaseAdminDocsView):
template_name = 'admin_doc/model_index.html'
def get_context_data(self, **kwargs):
m_list = [m._meta for m in apps.get_models()]
return super().get_context_data(**{**kwargs, 'models': m_list})
class ModelDetailView(BaseAdminDocsView):
template_name = 'admin_doc/model_detail.html'
def get_context_data(self, **kwargs):
model_name = self.kwargs['model_name']
# Get the model class.
try:
app_config = apps.get_app_config(self.kwargs['app_label'])
except LookupError:
raise Http404(_("App %(app_label)r not found") % self.kwargs)
try:
model = app_config.get_model(model_name)
except LookupError:
raise Http404(_("Model %(model_name)r not found in app %(app_label)r") % self.kwargs)
opts = model._meta
title, body, metadata = utils.parse_docstring(model.__doc__)
title = title and utils.parse_rst(title, 'model', _('model:') + model_name)
body = body and utils.parse_rst(body, 'model', _('model:') + model_name)
# Gather fields/field descriptions.
fields = []
for field in opts.fields:
# ForeignKey is a special case since the field will actually be a
# descriptor that returns the other object
if isinstance(field, models.ForeignKey):
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = utils.parse_rst(
(_("the related `%(app_label)s.%(data_type)s` object") % {
'app_label': app_label, 'data_type': data_type,
}),
'model',
_('model:') + data_type,
)
else:
data_type = get_readable_field_data_type(field)
verbose = field.verbose_name
fields.append({
'name': field.name,
'data_type': data_type,
'verbose': verbose or '',
'help_text': field.help_text,
})
# Gather many-to-many fields.
for field in opts.many_to_many:
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
'app_label': app_label,
'object_name': data_type,
}
fields.append({
'name': "%s.all" % field.name,
"data_type": 'List',
'verbose': utils.parse_rst(_("all %s") % verbose, 'model', _('model:') + opts.model_name),
})
fields.append({
'name': "%s.count" % field.name,
'data_type': 'Integer',
'verbose': utils.parse_rst(_("number of %s") % verbose, 'model', _('model:') + opts.model_name),
})
methods = []
# Gather model methods.
for func_name, func in model.__dict__.items():
if inspect.isfunction(func) or isinstance(func, property):
try:
for exclude in MODEL_METHODS_EXCLUDE:
if func_name.startswith(exclude):
raise StopIteration
except StopIteration:
continue
verbose = func.__doc__
verbose = verbose and (
utils.parse_rst(utils.trim_docstring(verbose), 'model', _('model:') + opts.model_name)
)
# Show properties and methods without arguments as fields.
# Otherwise, show as a 'method with arguments'.
if isinstance(func, property):
fields.append({
'name': func_name,
'data_type': get_return_data_type(func_name),
'verbose': verbose or ''
})
elif method_has_no_args(func) and not func_accepts_kwargs(func) and not func_accepts_var_args(func):
fields.append({
'name': func_name,
'data_type': get_return_data_type(func_name),
'verbose': verbose or '',
})
else:
arguments = get_func_full_args(func)
# Join arguments with ', ' and in case of default value,
# join it with '='. Use repr() so that strings will be
# correctly displayed.
print_arguments = ', '.join([
'='.join([arg_el[0], *map(repr, arg_el[1:])])
for arg_el in arguments
])
methods.append({
'name': func_name,
'arguments': print_arguments,
'verbose': verbose or '',
})
# Gather related objects
for rel in opts.related_objects:
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
'app_label': rel.related_model._meta.app_label,
'object_name': rel.related_model._meta.object_name,
}
accessor = rel.get_accessor_name()
fields.append({
'name': "%s.all" % accessor,
'data_type': 'List',
'verbose': utils.parse_rst(_("all %s") % verbose, 'model', _('model:') + opts.model_name),
})
fields.append({
'name': "%s.count" % accessor,
'data_type': 'Integer',
'verbose': utils.parse_rst(_("number of %s") % verbose, 'model', _('model:') + opts.model_name),
})
return super().get_context_data(**{
**kwargs,
'name': '%s.%s' % (opts.app_label, opts.object_name),
'summary': title,
'description': body,
'fields': fields,
'methods': methods,
})
class TemplateDetailView(BaseAdminDocsView):
template_name = 'admin_doc/template_detail.html'
def get_context_data(self, **kwargs):
template = self.kwargs['template']
templates = []
try:
default_engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
# This doesn't account for template loaders (#24128).
for index, directory in enumerate(default_engine.dirs):
template_file = Path(directory) / template
if template_file.exists():
with template_file.open() as f:
template_contents = f.read()
else:
template_contents = ''
templates.append({
'file': template_file,
'exists': template_file.exists(),
'contents': template_contents,
'order': index,
})
return super().get_context_data(**{
**kwargs,
'name': template,
'templates': templates,
})
####################
# Helper functions #
####################
def get_return_data_type(func_name):
"""Return a somewhat-helpful data type given a function name"""
if func_name.startswith('get_'):
if func_name.endswith('_list'):
return 'List'
elif func_name.endswith('_count'):
return 'Integer'
return ''
def get_readable_field_data_type(field):
"""
Return the description for a given field type, if it exists. Fields'
descriptions can contain format strings, which will be interpolated with
the values of field.__dict__ before being output.
"""
return field.description % field.__dict__
def extract_views_from_urlpatterns(urlpatterns, base='', namespace=None):
"""
Return a list of views from a list of urlpatterns.
Each object in the returned list is a two-tuple: (view_func, regex)
"""
views = []
for p in urlpatterns:
if hasattr(p, 'url_patterns'):
try:
patterns = p.url_patterns
except ImportError:
continue
views.extend(extract_views_from_urlpatterns(
patterns,
base + str(p.pattern),
(namespace or []) + (p.namespace and [p.namespace] or [])
))
elif hasattr(p, 'callback'):
try:
views.append((p.callback, base + str(p.pattern), namespace, p.name))
except ViewDoesNotExist:
continue
else:
raise TypeError(_("%s does not appear to be a urlpattern object") % p)
return views
def simplify_regex(pattern):
r"""
Clean up urlpattern regexes into something more readable by humans. For
example, turn "^(?P<sport_slug>\w+)/athletes/(?P<athlete_slug>\w+)/$"
into "/<sport_slug>/athletes/<athlete_slug>/".
"""
pattern = replace_named_groups(pattern)
pattern = replace_unnamed_groups(pattern)
# clean up any outstanding regex-y characters.
pattern = pattern.replace('^', '').replace('$', '').replace('?', '')
if not pattern.startswith('/'):
pattern = '/' + pattern
return pattern
|
ebfc6afc14639f3ea91566aaf89fef0a25d3fc57819fed6374137b8fd7cde7eb | from django.db.models import Index
from django.db.utils import NotSupportedError
from django.utils.functional import cached_property
__all__ = [
'BrinIndex', 'BTreeIndex', 'GinIndex', 'GistIndex', 'HashIndex',
'SpGistIndex',
]
class PostgresIndex(Index):
@cached_property
def max_name_length(self):
# Allow an index name longer than 30 characters when the suffix is
# longer than the usual 3 character limit. The 30 character limit for
# cross-database compatibility isn't applicable to PostgreSQL-specific
# indexes.
return Index.max_name_length - len(Index.suffix) + len(self.suffix)
def create_sql(self, model, schema_editor, using=''):
self.check_supported(schema_editor)
statement = super().create_sql(model, schema_editor, using=' USING %s' % self.suffix)
with_params = self.get_with_params()
if with_params:
statement.parts['extra'] = 'WITH (%s) %s' % (
', '.join(with_params),
statement.parts['extra'],
)
return statement
def check_supported(self, schema_editor):
pass
def get_with_params(self):
return []
class BrinIndex(PostgresIndex):
suffix = 'brin'
def __init__(self, *, autosummarize=None, pages_per_range=None, **kwargs):
if pages_per_range is not None and pages_per_range <= 0:
raise ValueError('pages_per_range must be None or a positive integer')
self.autosummarize = autosummarize
self.pages_per_range = pages_per_range
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.autosummarize is not None:
kwargs['autosummarize'] = self.autosummarize
if self.pages_per_range is not None:
kwargs['pages_per_range'] = self.pages_per_range
return path, args, kwargs
def check_supported(self, schema_editor):
if self.autosummarize and not schema_editor.connection.features.has_brin_autosummarize:
raise NotSupportedError('BRIN option autosummarize requires PostgreSQL 10+.')
def get_with_params(self):
with_params = []
if self.autosummarize is not None:
with_params.append('autosummarize = %s' % ('on' if self.autosummarize else 'off'))
if self.pages_per_range is not None:
with_params.append('pages_per_range = %d' % self.pages_per_range)
return with_params
class BTreeIndex(PostgresIndex):
suffix = 'btree'
def __init__(self, *, fillfactor=None, **kwargs):
self.fillfactor = fillfactor
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.fillfactor is not None:
kwargs['fillfactor'] = self.fillfactor
return path, args, kwargs
def get_with_params(self):
with_params = []
if self.fillfactor is not None:
with_params.append('fillfactor = %d' % self.fillfactor)
return with_params
class GinIndex(PostgresIndex):
suffix = 'gin'
def __init__(self, *, fastupdate=None, gin_pending_list_limit=None, **kwargs):
self.fastupdate = fastupdate
self.gin_pending_list_limit = gin_pending_list_limit
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.fastupdate is not None:
kwargs['fastupdate'] = self.fastupdate
if self.gin_pending_list_limit is not None:
kwargs['gin_pending_list_limit'] = self.gin_pending_list_limit
return path, args, kwargs
def get_with_params(self):
with_params = []
if self.gin_pending_list_limit is not None:
with_params.append('gin_pending_list_limit = %d' % self.gin_pending_list_limit)
if self.fastupdate is not None:
with_params.append('fastupdate = %s' % ('on' if self.fastupdate else 'off'))
return with_params
class GistIndex(PostgresIndex):
suffix = 'gist'
def __init__(self, *, buffering=None, fillfactor=None, **kwargs):
self.buffering = buffering
self.fillfactor = fillfactor
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.buffering is not None:
kwargs['buffering'] = self.buffering
if self.fillfactor is not None:
kwargs['fillfactor'] = self.fillfactor
return path, args, kwargs
def get_with_params(self):
with_params = []
if self.buffering is not None:
with_params.append('buffering = %s' % ('on' if self.buffering else 'off'))
if self.fillfactor is not None:
with_params.append('fillfactor = %d' % self.fillfactor)
return with_params
class HashIndex(PostgresIndex):
suffix = 'hash'
def __init__(self, *, fillfactor=None, **kwargs):
self.fillfactor = fillfactor
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.fillfactor is not None:
kwargs['fillfactor'] = self.fillfactor
return path, args, kwargs
def get_with_params(self):
with_params = []
if self.fillfactor is not None:
with_params.append('fillfactor = %d' % self.fillfactor)
return with_params
class SpGistIndex(PostgresIndex):
suffix = 'spgist'
def __init__(self, *, fillfactor=None, **kwargs):
self.fillfactor = fillfactor
super().__init__(**kwargs)
def deconstruct(self):
path, args, kwargs = super().deconstruct()
if self.fillfactor is not None:
kwargs['fillfactor'] = self.fillfactor
return path, args, kwargs
def get_with_params(self):
with_params = []
if self.fillfactor is not None:
with_params.append('fillfactor = %d' % self.fillfactor)
return with_params
|
3e062b978d97c4a28297a01ff78a68642fc5633f0284656c73ec03ad77afb5d5 | from django.db.models import CharField, Field, FloatField, TextField
from django.db.models.expressions import CombinedExpression, Func, Value
from django.db.models.functions import Cast, Coalesce
from django.db.models.lookups import Lookup
class SearchVectorExact(Lookup):
lookup_name = 'exact'
def process_rhs(self, qn, connection):
if not hasattr(self.rhs, 'resolve_expression'):
config = getattr(self.lhs, 'config', None)
self.rhs = SearchQuery(self.rhs, config=config)
rhs, rhs_params = super().process_rhs(qn, connection)
return rhs, rhs_params
def as_sql(self, qn, connection):
lhs, lhs_params = self.process_lhs(qn, connection)
rhs, rhs_params = self.process_rhs(qn, connection)
params = lhs_params + rhs_params
return '%s @@ %s = true' % (lhs, rhs), params
class SearchVectorField(Field):
def db_type(self, connection):
return 'tsvector'
class SearchQueryField(Field):
def db_type(self, connection):
return 'tsquery'
class SearchVectorCombinable:
ADD = '||'
def _combine(self, other, connector, reversed):
if not isinstance(other, SearchVectorCombinable) or not self.config == other.config:
raise TypeError('SearchVector can only be combined with other SearchVectors')
if reversed:
return CombinedSearchVector(other, connector, self, self.config)
return CombinedSearchVector(self, connector, other, self.config)
class SearchVector(SearchVectorCombinable, Func):
function = 'to_tsvector'
arg_joiner = " || ' ' || "
output_field = SearchVectorField()
config = None
def __init__(self, *expressions, **extra):
super().__init__(*expressions, **extra)
self.config = self.extra.get('config', self.config)
weight = self.extra.get('weight')
if weight is not None and not hasattr(weight, 'resolve_expression'):
weight = Value(weight)
self.weight = weight
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
resolved = super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
if self.config:
if not hasattr(self.config, 'resolve_expression'):
resolved.config = Value(self.config).resolve_expression(query, allow_joins, reuse, summarize, for_save)
else:
resolved.config = self.config.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return resolved
def as_sql(self, compiler, connection, function=None, template=None):
clone = self.copy()
clone.set_source_expressions([
Coalesce(
expression
if isinstance(expression.output_field, (CharField, TextField))
else Cast(expression, TextField()),
Value('')
) for expression in clone.get_source_expressions()
])
config_params = []
if template is None:
if clone.config:
config_sql, config_params = compiler.compile(clone.config)
template = '%(function)s({}::regconfig, %(expressions)s)'.format(config_sql.replace('%', '%%'))
else:
template = clone.template
sql, params = super(SearchVector, clone).as_sql(compiler, connection, function=function, template=template)
extra_params = []
if clone.weight:
weight_sql, extra_params = compiler.compile(clone.weight)
sql = 'setweight({}, {})'.format(sql, weight_sql)
return sql, config_params + params + extra_params
class CombinedSearchVector(SearchVectorCombinable, CombinedExpression):
def __init__(self, lhs, connector, rhs, config, output_field=None):
self.config = config
super().__init__(lhs, connector, rhs, output_field)
class SearchQueryCombinable:
BITAND = '&&'
BITOR = '||'
def _combine(self, other, connector, reversed):
if not isinstance(other, SearchQueryCombinable):
raise TypeError(
'SearchQuery can only be combined with other SearchQuerys, '
'got {}.'.format(type(other))
)
if reversed:
return CombinedSearchQuery(other, connector, self, self.config)
return CombinedSearchQuery(self, connector, other, self.config)
# On Combinable, these are not implemented to reduce confusion with Q. In
# this case we are actually (ab)using them to do logical combination so
# it's consistent with other usage in Django.
def __or__(self, other):
return self._combine(other, self.BITOR, False)
def __ror__(self, other):
return self._combine(other, self.BITOR, True)
def __and__(self, other):
return self._combine(other, self.BITAND, False)
def __rand__(self, other):
return self._combine(other, self.BITAND, True)
class SearchQuery(SearchQueryCombinable, Value):
output_field = SearchQueryField()
SEARCH_TYPES = {
'plain': 'plainto_tsquery',
'phrase': 'phraseto_tsquery',
'raw': 'to_tsquery',
}
def __init__(self, value, output_field=None, *, config=None, invert=False, search_type='plain'):
self.config = config
self.invert = invert
if search_type not in self.SEARCH_TYPES:
raise ValueError("Unknown search_type argument '%s'." % search_type)
self.search_type = search_type
super().__init__(value, output_field=output_field)
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
resolved = super().resolve_expression(query, allow_joins, reuse, summarize, for_save)
if self.config:
if not hasattr(self.config, 'resolve_expression'):
resolved.config = Value(self.config).resolve_expression(query, allow_joins, reuse, summarize, for_save)
else:
resolved.config = self.config.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return resolved
def as_sql(self, compiler, connection):
params = [self.value]
function = self.SEARCH_TYPES[self.search_type]
if self.config:
config_sql, config_params = compiler.compile(self.config)
template = '{}({}::regconfig, %s)'.format(function, config_sql)
params = config_params + [self.value]
else:
template = '{}(%s)'.format(function)
if self.invert:
template = '!!({})'.format(template)
return template, params
def _combine(self, other, connector, reversed):
combined = super()._combine(other, connector, reversed)
combined.output_field = SearchQueryField()
return combined
def __invert__(self):
return type(self)(self.value, config=self.config, invert=not self.invert)
def __str__(self):
result = super().__str__()
return ('~%s' % result) if self.invert else result
class CombinedSearchQuery(SearchQueryCombinable, CombinedExpression):
def __init__(self, lhs, connector, rhs, config, output_field=None):
self.config = config
super().__init__(lhs, connector, rhs, output_field)
def __str__(self):
return '(%s)' % super().__str__()
class SearchRank(Func):
function = 'ts_rank'
output_field = FloatField()
def __init__(self, vector, query, **extra):
if not hasattr(vector, 'resolve_expression'):
vector = SearchVector(vector)
if not hasattr(query, 'resolve_expression'):
query = SearchQuery(query)
weights = extra.get('weights')
if weights is not None and not hasattr(weights, 'resolve_expression'):
weights = Value(weights)
self.weights = weights
super().__init__(vector, query, **extra)
def as_sql(self, compiler, connection, function=None, template=None):
extra_params = []
extra_context = {}
if template is None and self.extra.get('weights'):
if self.weights:
template = '%(function)s(%(weights)s, %(expressions)s)'
weight_sql, extra_params = compiler.compile(self.weights)
extra_context['weights'] = weight_sql
sql, params = super().as_sql(
compiler, connection,
function=function, template=template, **extra_context
)
return sql, extra_params + params
SearchVectorField.register_lookup(SearchVectorExact)
class TrigramBase(Func):
output_field = FloatField()
def __init__(self, expression, string, **extra):
if not hasattr(string, 'resolve_expression'):
string = Value(string)
super().__init__(expression, string, **extra)
class TrigramSimilarity(TrigramBase):
function = 'SIMILARITY'
class TrigramDistance(TrigramBase):
function = ''
arg_joiner = ' <-> '
|
623f2138fd4784c5a3888d22e83ad3c65f807c3a422dbfa9f1009a88eb2f64e5 | from psycopg2.extras import (
DateRange, DateTimeRange, DateTimeTZRange, NumericRange,
)
from django.apps import AppConfig
from django.db import connections
from django.db.backends.signals import connection_created
from django.db.migrations.writer import MigrationWriter
from django.db.models import CharField, TextField
from django.test.signals import setting_changed
from django.utils.translation import gettext_lazy as _
from .lookups import SearchLookup, TrigramSimilar, Unaccent
from .serializers import RangeSerializer
from .signals import register_type_handlers
RANGE_TYPES = (DateRange, DateTimeRange, DateTimeTZRange, NumericRange)
def uninstall_if_needed(setting, value, enter, **kwargs):
"""
Undo the effects of PostgresConfig.ready() when django.contrib.postgres
is "uninstalled" by override_settings().
"""
if not enter and setting == 'INSTALLED_APPS' and 'django.contrib.postgres' not in set(value):
connection_created.disconnect(register_type_handlers)
CharField._unregister_lookup(Unaccent)
TextField._unregister_lookup(Unaccent)
CharField._unregister_lookup(SearchLookup)
TextField._unregister_lookup(SearchLookup)
CharField._unregister_lookup(TrigramSimilar)
TextField._unregister_lookup(TrigramSimilar)
# Disconnect this receiver until the next time this app is installed
# and ready() connects it again to prevent unnecessary processing on
# each setting change.
setting_changed.disconnect(uninstall_if_needed)
MigrationWriter.unregister_serializer(RANGE_TYPES)
class PostgresConfig(AppConfig):
name = 'django.contrib.postgres'
verbose_name = _('PostgreSQL extensions')
def ready(self):
setting_changed.connect(uninstall_if_needed)
# Connections may already exist before we are called.
for conn in connections.all():
if conn.vendor == 'postgresql':
conn.introspection.data_types_reverse.update({
3802: 'django.contrib.postgres.fields.JSONField',
3904: 'django.contrib.postgres.fields.IntegerRangeField',
3906: 'django.contrib.postgres.fields.DecimalRangeField',
3910: 'django.contrib.postgres.fields.DateTimeRangeField',
3912: 'django.contrib.postgres.fields.DateRangeField',
3926: 'django.contrib.postgres.fields.BigIntegerRangeField',
})
if conn.connection is not None:
register_type_handlers(conn)
connection_created.connect(register_type_handlers)
CharField.register_lookup(Unaccent)
TextField.register_lookup(Unaccent)
CharField.register_lookup(SearchLookup)
TextField.register_lookup(SearchLookup)
CharField.register_lookup(TrigramSimilar)
TextField.register_lookup(TrigramSimilar)
MigrationWriter.register_serializer(RANGE_TYPES, RangeSerializer)
|
10f5b8f89b60315ff1e3f028b06e02f872d7dcae0ef65b3d133c3d7f4ee21ddf | from django.db.migrations.serializer import BaseSerializer
class RangeSerializer(BaseSerializer):
def serialize(self):
module = self.value.__class__.__module__
# Ranges are implemented in psycopg2._range but the public import
# location is psycopg2.extras.
module = 'psycopg2.extras' if module == 'psycopg2._range' else module
return '%s.%r' % (module, self.value), {'import %s' % module}
|
9c8190bd7256aa4221214e771bab016c3a6424c657167785505135c39fdcc0cb | from django.db.models import Lookup, Transform
from django.db.models.lookups import Exact, FieldGetDbPrepValueMixin
from .search import SearchVector, SearchVectorExact, SearchVectorField
class PostgresSimpleLookup(FieldGetDbPrepValueMixin, Lookup):
def as_sql(self, qn, connection):
lhs, lhs_params = self.process_lhs(qn, connection)
rhs, rhs_params = self.process_rhs(qn, connection)
params = lhs_params + rhs_params
return '%s %s %s' % (lhs, self.operator, rhs), params
class DataContains(PostgresSimpleLookup):
lookup_name = 'contains'
operator = '@>'
class ContainedBy(PostgresSimpleLookup):
lookup_name = 'contained_by'
operator = '<@'
class Overlap(PostgresSimpleLookup):
lookup_name = 'overlap'
operator = '&&'
class HasKey(PostgresSimpleLookup):
lookup_name = 'has_key'
operator = '?'
prepare_rhs = False
class HasKeys(PostgresSimpleLookup):
lookup_name = 'has_keys'
operator = '?&'
def get_prep_lookup(self):
return [str(item) for item in self.rhs]
class HasAnyKeys(HasKeys):
lookup_name = 'has_any_keys'
operator = '?|'
class Unaccent(Transform):
bilateral = True
lookup_name = 'unaccent'
function = 'UNACCENT'
class SearchLookup(SearchVectorExact):
lookup_name = 'search'
def process_lhs(self, qn, connection):
if not isinstance(self.lhs.output_field, SearchVectorField):
self.lhs = SearchVector(self.lhs)
lhs, lhs_params = super().process_lhs(qn, connection)
return lhs, lhs_params
class TrigramSimilar(PostgresSimpleLookup):
lookup_name = 'trigram_similar'
operator = '%%'
class JSONExact(Exact):
can_use_none_as_rhs = True
def process_rhs(self, compiler, connection):
result = super().process_rhs(compiler, connection)
# Treat None lookup values as null.
return ("'null'", []) if result == ('%s', [None]) else result
|
180bf29a79ef7a4aec9256d2e9b7c4610a9d6ebb63832d9fabfb7769b80892d6 | from calendar import timegm
from django.contrib.sites.shortcuts import get_current_site
from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
from django.http import Http404, HttpResponse
from django.template import TemplateDoesNotExist, loader
from django.utils import feedgenerator
from django.utils.encoding import iri_to_uri
from django.utils.html import escape
from django.utils.http import http_date
from django.utils.timezone import get_default_timezone, is_naive, make_aware
from django.utils.translation import get_language
def add_domain(domain, url, secure=False):
protocol = 'https' if secure else 'http'
if url.startswith('//'):
# Support network-path reference (see #16753) - RSS requires a protocol
url = '%s:%s' % (protocol, url)
elif not url.startswith(('http://', 'https://', 'mailto:')):
url = iri_to_uri('%s://%s%s' % (protocol, domain, url))
return url
class FeedDoesNotExist(ObjectDoesNotExist):
pass
class Feed:
feed_type = feedgenerator.DefaultFeed
title_template = None
description_template = None
language = None
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def item_title(self, item):
# Titles should be double escaped by default (see #6533)
return escape(str(item))
def item_description(self, item):
return str(item)
def item_link(self, item):
try:
return item.get_absolute_url()
except AttributeError:
raise ImproperlyConfigured(
'Give your %s class a get_absolute_url() method, or define an '
'item_link() method in your Feed class.' % item.__class__.__name__
)
def item_enclosures(self, item):
enc_url = self._get_dynamic_attr('item_enclosure_url', item)
if enc_url:
enc = feedgenerator.Enclosure(
url=str(enc_url),
length=str(self._get_dynamic_attr('item_enclosure_length', item)),
mime_type=str(self._get_dynamic_attr('item_enclosure_mime_type', item)),
)
return [enc]
return []
def _get_dynamic_attr(self, attname, obj, default=None):
try:
attr = getattr(self, attname)
except AttributeError:
return default
if callable(attr):
# Check co_argcount rather than try/excepting the function and
# catching the TypeError, because something inside the function
# may raise the TypeError. This technique is more accurate.
try:
code = attr.__code__
except AttributeError:
code = attr.__call__.__code__
if code.co_argcount == 2: # one argument is 'self'
return attr(obj)
else:
return attr()
return attr
def feed_extra_kwargs(self, obj):
"""
Return an extra keyword arguments dictionary that is used when
initializing the feed generator.
"""
return {}
def item_extra_kwargs(self, item):
"""
Return an extra keyword arguments dictionary that is used with
the `add_item` call of the feed generator.
"""
return {}
def get_object(self, request, *args, **kwargs):
return None
def get_context_data(self, **kwargs):
"""
Return a dictionary to use as extra context if either
``self.description_template`` or ``self.item_template`` are used.
Default implementation preserves the old behavior
of using {'obj': item, 'site': current_site} as the context.
"""
return {'obj': kwargs.get('item'), 'site': kwargs.get('site')}
def get_feed(self, obj, request):
"""
Return a feedgenerator.DefaultFeed object, fully populated, for
this feed. Raise FeedDoesNotExist for invalid parameters.
"""
current_site = get_current_site(request)
link = self._get_dynamic_attr('link', obj)
link = add_domain(current_site.domain, link, request.is_secure())
feed = self.feed_type(
title=self._get_dynamic_attr('title', obj),
subtitle=self._get_dynamic_attr('subtitle', obj),
link=link,
description=self._get_dynamic_attr('description', obj),
language=self.language or get_language(),
feed_url=add_domain(
current_site.domain,
self._get_dynamic_attr('feed_url', obj) or request.path,
request.is_secure(),
),
author_name=self._get_dynamic_attr('author_name', obj),
author_link=self._get_dynamic_attr('author_link', obj),
author_email=self._get_dynamic_attr('author_email', obj),
categories=self._get_dynamic_attr('categories', obj),
feed_copyright=self._get_dynamic_attr('feed_copyright', obj),
feed_guid=self._get_dynamic_attr('feed_guid', obj),
ttl=self._get_dynamic_attr('ttl', obj),
**self.feed_extra_kwargs(obj)
)
title_tmp = None
if self.title_template is not None:
try:
title_tmp = loader.get_template(self.title_template)
except TemplateDoesNotExist:
pass
description_tmp = None
if self.description_template is not None:
try:
description_tmp = loader.get_template(self.description_template)
except TemplateDoesNotExist:
pass
for item in self._get_dynamic_attr('items', obj):
context = self.get_context_data(item=item, site=current_site,
obj=obj, request=request)
if title_tmp is not None:
title = title_tmp.render(context, request)
else:
title = self._get_dynamic_attr('item_title', item)
if description_tmp is not None:
description = description_tmp.render(context, request)
else:
description = self._get_dynamic_attr('item_description', item)
link = add_domain(
current_site.domain,
self._get_dynamic_attr('item_link', item),
request.is_secure(),
)
enclosures = self._get_dynamic_attr('item_enclosures', item)
author_name = self._get_dynamic_attr('item_author_name', item)
if author_name is not None:
author_email = self._get_dynamic_attr('item_author_email', item)
author_link = self._get_dynamic_attr('item_author_link', item)
else:
author_email = author_link = None
tz = get_default_timezone()
pubdate = self._get_dynamic_attr('item_pubdate', item)
if pubdate and is_naive(pubdate):
pubdate = make_aware(pubdate, tz)
updateddate = self._get_dynamic_attr('item_updateddate', item)
if updateddate and is_naive(updateddate):
updateddate = make_aware(updateddate, tz)
feed.add_item(
title=title,
link=link,
description=description,
unique_id=self._get_dynamic_attr('item_guid', item, link),
unique_id_is_permalink=self._get_dynamic_attr(
'item_guid_is_permalink', item),
enclosures=enclosures,
pubdate=pubdate,
updateddate=updateddate,
author_name=author_name,
author_email=author_email,
author_link=author_link,
categories=self._get_dynamic_attr('item_categories', item),
item_copyright=self._get_dynamic_attr('item_copyright', item),
**self.item_extra_kwargs(item)
)
return feed
|
dc783aab1351faecc401551336b99b4e19c378f8835e041f3f00d68ab876b9e6 | import inspect
import warnings
from django.contrib.auth import get_user_model
from django.contrib.auth.models import Permission
from django.utils.deprecation import RemovedInDjango31Warning
UserModel = get_user_model()
class BaseBackend:
def authenticate(self, request, **kwargs):
return None
def get_user(self, user_id):
return None
def get_user_permissions(self, user_obj, obj=None):
return set()
def get_group_permissions(self, user_obj, obj=None):
return set()
def get_all_permissions(self, user_obj, obj=None):
return {
*self.get_user_permissions(user_obj, obj=obj),
*self.get_group_permissions(user_obj, obj=obj),
}
def has_perm(self, user_obj, perm, obj=None):
return perm in self.get_all_permissions(user_obj, obj=obj)
class ModelBackend(BaseBackend):
"""
Authenticates against settings.AUTH_USER_MODEL.
"""
def authenticate(self, request, username=None, password=None, **kwargs):
if username is None:
username = kwargs.get(UserModel.USERNAME_FIELD)
if username is None or password is None:
return
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
# Run the default password hasher once to reduce the timing
# difference between an existing and a nonexistent user (#20760).
UserModel().set_password(password)
else:
if user.check_password(password) and self.user_can_authenticate(user):
return user
def user_can_authenticate(self, user):
"""
Reject users with is_active=False. Custom user models that don't have
that attribute are allowed.
"""
is_active = getattr(user, 'is_active', None)
return is_active or is_active is None
def _get_user_permissions(self, user_obj):
return user_obj.user_permissions.all()
def _get_group_permissions(self, user_obj):
user_groups_field = get_user_model()._meta.get_field('groups')
user_groups_query = 'group__%s' % user_groups_field.related_query_name()
return Permission.objects.filter(**{user_groups_query: user_obj})
def _get_permissions(self, user_obj, obj, from_name):
"""
Return the permissions of `user_obj` from `from_name`. `from_name` can
be either "group" or "user" to return permissions from
`_get_group_permissions` or `_get_user_permissions` respectively.
"""
if not user_obj.is_active or user_obj.is_anonymous or obj is not None:
return set()
perm_cache_name = '_%s_perm_cache' % from_name
if not hasattr(user_obj, perm_cache_name):
if user_obj.is_superuser:
perms = Permission.objects.all()
else:
perms = getattr(self, '_get_%s_permissions' % from_name)(user_obj)
perms = perms.values_list('content_type__app_label', 'codename').order_by()
setattr(user_obj, perm_cache_name, {"%s.%s" % (ct, name) for ct, name in perms})
return getattr(user_obj, perm_cache_name)
def get_user_permissions(self, user_obj, obj=None):
"""
Return a set of permission strings the user `user_obj` has from their
`user_permissions`.
"""
return self._get_permissions(user_obj, obj, 'user')
def get_group_permissions(self, user_obj, obj=None):
"""
Return a set of permission strings the user `user_obj` has from the
groups they belong.
"""
return self._get_permissions(user_obj, obj, 'group')
def get_all_permissions(self, user_obj, obj=None):
if not user_obj.is_active or user_obj.is_anonymous or obj is not None:
return set()
if not hasattr(user_obj, '_perm_cache'):
user_obj._perm_cache = super().get_all_permissions(user_obj)
return user_obj._perm_cache
def has_perm(self, user_obj, perm, obj=None):
return user_obj.is_active and super().has_perm(user_obj, perm, obj=obj)
def has_module_perms(self, user_obj, app_label):
"""
Return True if user_obj has any permissions in the given app_label.
"""
return user_obj.is_active and any(
perm[:perm.index('.')] == app_label
for perm in self.get_all_permissions(user_obj)
)
def get_user(self, user_id):
try:
user = UserModel._default_manager.get(pk=user_id)
except UserModel.DoesNotExist:
return None
return user if self.user_can_authenticate(user) else None
class AllowAllUsersModelBackend(ModelBackend):
def user_can_authenticate(self, user):
return True
class RemoteUserBackend(ModelBackend):
"""
This backend is to be used in conjunction with the ``RemoteUserMiddleware``
found in the middleware module of this package, and is used when the server
is handling authentication outside of Django.
By default, the ``authenticate`` method creates ``User`` objects for
usernames that don't already exist in the database. Subclasses can disable
this behavior by setting the ``create_unknown_user`` attribute to
``False``.
"""
# Create a User object if not already in the database?
create_unknown_user = True
def authenticate(self, request, remote_user):
"""
The username passed as ``remote_user`` is considered trusted. Return
the ``User`` object with the given username. Create a new ``User``
object if ``create_unknown_user`` is ``True``.
Return None if ``create_unknown_user`` is ``False`` and a ``User``
object with the given username is not found in the database.
"""
if not remote_user:
return
user = None
username = self.clean_username(remote_user)
# Note that this could be accomplished in one try-except clause, but
# instead we use get_or_create when creating unknown users since it has
# built-in safeguards for multiple threads.
if self.create_unknown_user:
user, created = UserModel._default_manager.get_or_create(**{
UserModel.USERNAME_FIELD: username
})
if created:
args = (request, user)
try:
inspect.getcallargs(self.configure_user, request, user)
except TypeError:
args = (user,)
warnings.warn(
'Update %s.configure_user() to accept `request` as '
'the first argument.'
% self.__class__.__name__, RemovedInDjango31Warning
)
user = self.configure_user(*args)
else:
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
pass
return user if self.user_can_authenticate(user) else None
def clean_username(self, username):
"""
Perform any cleaning on the "username" prior to using it to get or
create the user object. Return the cleaned username.
By default, return the username unchanged.
"""
return username
def configure_user(self, request, user):
"""
Configure a user after creation and return the updated user.
By default, return the user unmodified.
"""
return user
class AllowAllUsersRemoteUserBackend(RemoteUserBackend):
def user_can_authenticate(self, user):
return True
|
093fe9729aad3422798ee646e1c564d329fc6a6221be41457fb18bf72b3c73a4 | import inspect
import re
from django.apps import apps as django_apps
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured, PermissionDenied
from django.middleware.csrf import rotate_token
from django.utils.crypto import constant_time_compare
from django.utils.module_loading import import_string
from .signals import user_logged_in, user_logged_out, user_login_failed
SESSION_KEY = '_auth_user_id'
BACKEND_SESSION_KEY = '_auth_user_backend'
HASH_SESSION_KEY = '_auth_user_hash'
REDIRECT_FIELD_NAME = 'next'
def load_backend(path):
return import_string(path)()
def _get_backends(return_tuples=False):
backends = []
for backend_path in settings.AUTHENTICATION_BACKENDS:
backend = load_backend(backend_path)
backends.append((backend, backend_path) if return_tuples else backend)
if not backends:
raise ImproperlyConfigured(
'No authentication backends have been defined. Does '
'AUTHENTICATION_BACKENDS contain anything?'
)
return backends
def get_backends():
return _get_backends(return_tuples=False)
def _clean_credentials(credentials):
"""
Clean a dictionary of credentials of potentially sensitive info before
sending to less secure functions.
Not comprehensive - intended for user_login_failed signal
"""
SENSITIVE_CREDENTIALS = re.compile('api|token|key|secret|password|signature', re.I)
CLEANSED_SUBSTITUTE = '********************'
for key in credentials:
if SENSITIVE_CREDENTIALS.search(key):
credentials[key] = CLEANSED_SUBSTITUTE
return credentials
def _get_user_session_key(request):
# This value in the session is always serialized to a string, so we need
# to convert it back to Python whenever we access it.
return get_user_model()._meta.pk.to_python(request.session[SESSION_KEY])
def authenticate(request=None, **credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, request, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(request, **credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
break
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__, credentials=_clean_credentials(credentials), request=request)
def login(request, user, backend=None):
"""
Persist a user id and a backend in the request. This way a user doesn't
have to reauthenticate on every request. Note that data set during
the anonymous session is retained when the user logs in.
"""
session_auth_hash = ''
if user is None:
user = request.user
if hasattr(user, 'get_session_auth_hash'):
session_auth_hash = user.get_session_auth_hash()
if SESSION_KEY in request.session:
if _get_user_session_key(request) != user.pk or (
session_auth_hash and
not constant_time_compare(request.session.get(HASH_SESSION_KEY, ''), session_auth_hash)):
# To avoid reusing another user's session, create a new, empty
# session if the existing session corresponds to a different
# authenticated user.
request.session.flush()
else:
request.session.cycle_key()
try:
backend = backend or user.backend
except AttributeError:
backends = _get_backends(return_tuples=True)
if len(backends) == 1:
_, backend = backends[0]
else:
raise ValueError(
'You have multiple authentication backends configured and '
'therefore must provide the `backend` argument or set the '
'`backend` attribute on the user.'
)
else:
if not isinstance(backend, str):
raise TypeError('backend must be a dotted import path string (got %r).' % backend)
request.session[SESSION_KEY] = user._meta.pk.value_to_string(user)
request.session[BACKEND_SESSION_KEY] = backend
request.session[HASH_SESSION_KEY] = session_auth_hash
if hasattr(request, 'user'):
request.user = user
rotate_token(request)
user_logged_in.send(sender=user.__class__, request=request, user=user)
def logout(request):
"""
Remove the authenticated user's ID from the request and flush their session
data.
"""
# Dispatch the signal before the user is logged out so the receivers have a
# chance to find out *who* logged out.
user = getattr(request, 'user', None)
if not getattr(user, 'is_authenticated', True):
user = None
user_logged_out.send(sender=user.__class__, request=request, user=user)
request.session.flush()
if hasattr(request, 'user'):
from django.contrib.auth.models import AnonymousUser
request.user = AnonymousUser()
def get_user_model():
"""
Return the User model that is active in this project.
"""
try:
return django_apps.get_model(settings.AUTH_USER_MODEL, require_ready=False)
except ValueError:
raise ImproperlyConfigured("AUTH_USER_MODEL must be of the form 'app_label.model_name'")
except LookupError:
raise ImproperlyConfigured(
"AUTH_USER_MODEL refers to model '%s' that has not been installed" % settings.AUTH_USER_MODEL
)
def get_user(request):
"""
Return the user model instance associated with the given request session.
If no user is retrieved, return an instance of `AnonymousUser`.
"""
from .models import AnonymousUser
user = None
try:
user_id = _get_user_session_key(request)
backend_path = request.session[BACKEND_SESSION_KEY]
except KeyError:
pass
else:
if backend_path in settings.AUTHENTICATION_BACKENDS:
backend = load_backend(backend_path)
user = backend.get_user(user_id)
# Verify the session
if hasattr(user, 'get_session_auth_hash'):
session_hash = request.session.get(HASH_SESSION_KEY)
session_hash_verified = session_hash and constant_time_compare(
session_hash,
user.get_session_auth_hash()
)
if not session_hash_verified:
request.session.flush()
user = None
return user or AnonymousUser()
def get_permission_codename(action, opts):
"""
Return the codename of the permission for the specified action.
"""
return '%s_%s' % (action, opts.model_name)
def update_session_auth_hash(request, user):
"""
Updating a user's password logs out all sessions for the user.
Take the current request and the updated user object from which the new
session hash will be derived and update the session hash appropriately to
prevent a password change from logging out the session from which the
password was changed.
"""
request.session.cycle_key()
if hasattr(user, 'get_session_auth_hash') and request.user == user:
request.session[HASH_SESSION_KEY] = user.get_session_auth_hash()
default_app_config = 'django.contrib.auth.apps.AuthConfig'
|
fff58d951939adbb50a4963ee72cd2e87281464d3260a289a20486437cc0dd75 | from django.contrib import auth
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import PermissionDenied
from django.core.mail import send_mail
from django.db import models
from django.db.models.manager import EmptyManager
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from .validators import UnicodeUsernameValidator
def update_last_login(sender, user, **kwargs):
"""
A signal receiver which updates the last_login date for
the user logging in.
"""
user.last_login = timezone.now()
user.save(update_fields=['last_login'])
class PermissionManager(models.Manager):
use_in_migrations = True
def get_by_natural_key(self, codename, app_label, model):
return self.get(
codename=codename,
content_type=ContentType.objects.db_manager(self.db).get_by_natural_key(app_label, model),
)
class Permission(models.Model):
"""
The permissions system provides a way to assign permissions to specific
users and groups of users.
The permission system is used by the Django admin site, but may also be
useful in your own code. The Django admin site uses permissions as follows:
- The "add" permission limits the user's ability to view the "add" form
and add an object.
- The "change" permission limits a user's ability to view the change
list, view the "change" form and change an object.
- The "delete" permission limits the ability to delete an object.
- The "view" permission limits the ability to view an object.
Permissions are set globally per type of object, not per specific object
instance. It is possible to say "Mary may change news stories," but it's
not currently possible to say "Mary may change news stories, but only the
ones she created herself" or "Mary may only change news stories that have a
certain status or publication date."
The permissions listed above are automatically created for each model.
"""
name = models.CharField(_('name'), max_length=255)
content_type = models.ForeignKey(
ContentType,
models.CASCADE,
verbose_name=_('content type'),
)
codename = models.CharField(_('codename'), max_length=100)
objects = PermissionManager()
class Meta:
verbose_name = _('permission')
verbose_name_plural = _('permissions')
unique_together = (('content_type', 'codename'),)
ordering = ('content_type__app_label', 'content_type__model',
'codename')
def __str__(self):
return '%s | %s' % (self.content_type, self.name)
def natural_key(self):
return (self.codename,) + self.content_type.natural_key()
natural_key.dependencies = ['contenttypes.contenttype']
class GroupManager(models.Manager):
"""
The manager for the auth's Group model.
"""
use_in_migrations = True
def get_by_natural_key(self, name):
return self.get(name=name)
class Group(models.Model):
"""
Groups are a generic way of categorizing users to apply permissions, or
some other label, to those users. A user can belong to any number of
groups.
A user in a group automatically has all the permissions granted to that
group. For example, if the group 'Site editors' has the permission
can_edit_home_page, any user in that group will have that permission.
Beyond permissions, groups are a convenient way to categorize users to
apply some label, or extended functionality, to them. For example, you
could create a group 'Special users', and you could write code that would
do special things to those users -- such as giving them access to a
members-only portion of your site, or sending them members-only email
messages.
"""
name = models.CharField(_('name'), max_length=150, unique=True)
permissions = models.ManyToManyField(
Permission,
verbose_name=_('permissions'),
blank=True,
)
objects = GroupManager()
class Meta:
verbose_name = _('group')
verbose_name_plural = _('groups')
def __str__(self):
return self.name
def natural_key(self):
return (self.name,)
class UserManager(BaseUserManager):
use_in_migrations = True
def _create_user(self, username, email, password, **extra_fields):
"""
Create and save a user with the given username, email, and password.
"""
if not username:
raise ValueError('The given username must be set')
email = self.normalize_email(email)
username = self.model.normalize_username(username)
user = self.model(username=username, email=email, **extra_fields)
user.set_password(password)
user.save(using=self._db)
return user
def create_user(self, username, email=None, password=None, **extra_fields):
extra_fields.setdefault('is_staff', False)
extra_fields.setdefault('is_superuser', False)
return self._create_user(username, email, password, **extra_fields)
def create_superuser(self, username, email, password, **extra_fields):
extra_fields.setdefault('is_staff', True)
extra_fields.setdefault('is_superuser', True)
if extra_fields.get('is_staff') is not True:
raise ValueError('Superuser must have is_staff=True.')
if extra_fields.get('is_superuser') is not True:
raise ValueError('Superuser must have is_superuser=True.')
return self._create_user(username, email, password, **extra_fields)
# A few helper functions for common logic between User and AnonymousUser.
def _user_get_permissions(user, obj, from_name):
permissions = set()
name = 'get_%s_permissions' % from_name
for backend in auth.get_backends():
if hasattr(backend, name):
permissions.update(getattr(backend, name)(user, obj))
return permissions
def _user_has_perm(user, perm, obj):
"""
A backend can raise `PermissionDenied` to short-circuit permission checking.
"""
for backend in auth.get_backends():
if not hasattr(backend, 'has_perm'):
continue
try:
if backend.has_perm(user, perm, obj):
return True
except PermissionDenied:
return False
return False
def _user_has_module_perms(user, app_label):
"""
A backend can raise `PermissionDenied` to short-circuit permission checking.
"""
for backend in auth.get_backends():
if not hasattr(backend, 'has_module_perms'):
continue
try:
if backend.has_module_perms(user, app_label):
return True
except PermissionDenied:
return False
return False
class PermissionsMixin(models.Model):
"""
Add the fields and methods necessary to support the Group and Permission
models using the ModelBackend.
"""
is_superuser = models.BooleanField(
_('superuser status'),
default=False,
help_text=_(
'Designates that this user has all permissions without '
'explicitly assigning them.'
),
)
groups = models.ManyToManyField(
Group,
verbose_name=_('groups'),
blank=True,
help_text=_(
'The groups this user belongs to. A user will get all permissions '
'granted to each of their groups.'
),
related_name="user_set",
related_query_name="user",
)
user_permissions = models.ManyToManyField(
Permission,
verbose_name=_('user permissions'),
blank=True,
help_text=_('Specific permissions for this user.'),
related_name="user_set",
related_query_name="user",
)
class Meta:
abstract = True
def get_user_permissions(self, obj=None):
"""
Return a list of permission strings that this user has directly.
Query all available auth backends. If an object is passed in,
return only permissions matching this object.
"""
return _user_get_permissions(self, obj, 'user')
def get_group_permissions(self, obj=None):
"""
Return a list of permission strings that this user has through their
groups. Query all available auth backends. If an object is passed in,
return only permissions matching this object.
"""
return _user_get_permissions(self, obj, 'group')
def get_all_permissions(self, obj=None):
return _user_get_permissions(self, obj, 'all')
def has_perm(self, perm, obj=None):
"""
Return True if the user has the specified permission. Query all
available auth backends, but return immediately if any backend returns
True. Thus, a user who has permission from a single auth backend is
assumed to have permission in general. If an object is provided, check
permissions for that object.
"""
# Active superusers have all permissions.
if self.is_active and self.is_superuser:
return True
# Otherwise we need to check the backends.
return _user_has_perm(self, perm, obj)
def has_perms(self, perm_list, obj=None):
"""
Return True if the user has each of the specified permissions. If
object is passed, check if the user has all required perms for it.
"""
return all(self.has_perm(perm, obj) for perm in perm_list)
def has_module_perms(self, app_label):
"""
Return True if the user has any permissions in the given app label.
Use similar logic as has_perm(), above.
"""
# Active superusers have all permissions.
if self.is_active and self.is_superuser:
return True
return _user_has_module_perms(self, app_label)
class AbstractUser(AbstractBaseUser, PermissionsMixin):
"""
An abstract base class implementing a fully featured User model with
admin-compliant permissions.
Username and password are required. Other fields are optional.
"""
username_validator = UnicodeUsernameValidator()
username = models.CharField(
_('username'),
max_length=150,
unique=True,
help_text=_('Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.'),
validators=[username_validator],
error_messages={
'unique': _("A user with that username already exists."),
},
)
first_name = models.CharField(_('first name'), max_length=30, blank=True)
last_name = models.CharField(_('last name'), max_length=150, blank=True)
email = models.EmailField(_('email address'), blank=True)
is_staff = models.BooleanField(
_('staff status'),
default=False,
help_text=_('Designates whether the user can log into this admin site.'),
)
is_active = models.BooleanField(
_('active'),
default=True,
help_text=_(
'Designates whether this user should be treated as active. '
'Unselect this instead of deleting accounts.'
),
)
date_joined = models.DateTimeField(_('date joined'), default=timezone.now)
objects = UserManager()
EMAIL_FIELD = 'email'
USERNAME_FIELD = 'username'
REQUIRED_FIELDS = ['email']
class Meta:
verbose_name = _('user')
verbose_name_plural = _('users')
abstract = True
def clean(self):
super().clean()
self.email = self.__class__.objects.normalize_email(self.email)
def get_full_name(self):
"""
Return the first_name plus the last_name, with a space in between.
"""
full_name = '%s %s' % (self.first_name, self.last_name)
return full_name.strip()
def get_short_name(self):
"""Return the short name for the user."""
return self.first_name
def email_user(self, subject, message, from_email=None, **kwargs):
"""Send an email to this user."""
send_mail(subject, message, from_email, [self.email], **kwargs)
class User(AbstractUser):
"""
Users within the Django authentication system are represented by this
model.
Username and password are required. Other fields are optional.
"""
class Meta(AbstractUser.Meta):
swappable = 'AUTH_USER_MODEL'
class AnonymousUser:
id = None
pk = None
username = ''
is_staff = False
is_active = False
is_superuser = False
_groups = EmptyManager(Group)
_user_permissions = EmptyManager(Permission)
def __str__(self):
return 'AnonymousUser'
def __eq__(self, other):
return isinstance(other, self.__class__)
def __hash__(self):
return 1 # instances always return the same hash value
def __int__(self):
raise TypeError('Cannot cast AnonymousUser to int. Are you trying to use it in place of User?')
def save(self):
raise NotImplementedError("Django doesn't provide a DB representation for AnonymousUser.")
def delete(self):
raise NotImplementedError("Django doesn't provide a DB representation for AnonymousUser.")
def set_password(self, raw_password):
raise NotImplementedError("Django doesn't provide a DB representation for AnonymousUser.")
def check_password(self, raw_password):
raise NotImplementedError("Django doesn't provide a DB representation for AnonymousUser.")
@property
def groups(self):
return self._groups
@property
def user_permissions(self):
return self._user_permissions
def get_user_permissions(self, obj=None):
return _user_get_permissions(self, obj, 'user')
def get_group_permissions(self, obj=None):
return set()
def get_all_permissions(self, obj=None):
return _user_get_permissions(self, obj, 'all')
def has_perm(self, perm, obj=None):
return _user_has_perm(self, perm, obj=obj)
def has_perms(self, perm_list, obj=None):
return all(self.has_perm(perm, obj) for perm in perm_list)
def has_module_perms(self, module):
return _user_has_module_perms(self, module)
@property
def is_anonymous(self):
return True
@property
def is_authenticated(self):
return False
def get_username(self):
return self.username
|
27167a6843e26c0bc0a0335322522b603cfcfd5f14650b3c28e60a4544c97caa | from datetime import date
from django.conf import settings
from django.utils.crypto import constant_time_compare, salted_hmac
from django.utils.http import base36_to_int, int_to_base36
class PasswordResetTokenGenerator:
"""
Strategy object used to generate and check tokens for the password
reset mechanism.
"""
key_salt = "django.contrib.auth.tokens.PasswordResetTokenGenerator"
secret = settings.SECRET_KEY
def make_token(self, user):
"""
Return a token that can be used once to do a password reset
for the given user.
"""
return self._make_token_with_timestamp(user, self._num_days(self._today()))
def check_token(self, user, token):
"""
Check that a password reset token is correct for a given user.
"""
if not (user and token):
return False
# Parse the token
try:
ts_b36, _ = token.split("-")
except ValueError:
return False
try:
ts = base36_to_int(ts_b36)
except ValueError:
return False
# Check that the timestamp/uid has not been tampered with
if not constant_time_compare(self._make_token_with_timestamp(user, ts), token):
return False
# Check the timestamp is within limit. Timestamps are rounded to
# midnight (server time) providing a resolution of only 1 day. If a
# link is generated 5 minutes before midnight and used 6 minutes later,
# that counts as 1 day. Therefore, PASSWORD_RESET_TIMEOUT_DAYS = 1 means
# "at least 1 day, could be up to 2."
if (self._num_days(self._today()) - ts) > settings.PASSWORD_RESET_TIMEOUT_DAYS:
return False
return True
def _make_token_with_timestamp(self, user, timestamp):
# timestamp is number of days since 2001-1-1. Converted to
# base 36, this gives us a 3 digit string until about 2121
ts_b36 = int_to_base36(timestamp)
hash_string = salted_hmac(
self.key_salt,
self._make_hash_value(user, timestamp),
secret=self.secret,
).hexdigest()[::2] # Limit to 20 characters to shorten the URL.
return "%s-%s" % (ts_b36, hash_string)
def _make_hash_value(self, user, timestamp):
"""
Hash the user's primary key and some user state that's sure to change
after a password reset to produce a token that invalidated when it's
used:
1. The password field will change upon a password reset (even if the
same password is chosen, due to password salting).
2. The last_login field will usually be updated very shortly after
a password reset.
Failing those things, settings.PASSWORD_RESET_TIMEOUT_DAYS eventually
invalidates the token.
Running this data through salted_hmac() prevents password cracking
attempts using the reset token, provided the secret isn't compromised.
"""
# Truncate microseconds so that tokens are consistent even if the
# database doesn't support microseconds.
login_timestamp = '' if user.last_login is None else user.last_login.replace(microsecond=0, tzinfo=None)
return str(user.pk) + user.password + str(login_timestamp) + str(timestamp)
def _num_days(self, dt):
return (dt - date(2001, 1, 1)).days
def _today(self):
# Used for mocking in tests
return date.today()
default_token_generator = PasswordResetTokenGenerator()
|
04b0dc05eb1a5bfc2999be96790a3928b6c8834333485c4c061bb6185777adbb | import base64
import binascii
import functools
import hashlib
import importlib
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 (
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)
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('$', 1)[0]
return get_hasher(algorithm)
def mask_hash(hash, show=6, char="*"):
"""
Return the given hash, with only the first ``show`` number shown. The
rest are masked with ``char`` for security reasons.
"""
masked = hash[:show]
masked += char * len(hash[show:])
return masked
class BasePasswordHasher:
"""
Abstract base class for password hashers
When creating your own hasher, you need to override algorithm,
verify(), encode() and safe_summary().
PasswordHasher objects are immutable.
"""
algorithm = None
library = None
def _load_library(self):
if self.library is not None:
if isinstance(self.library, (tuple, list)):
name, mod_path = self.library
else:
mod_path = self.library
try:
module = importlib.import_module(mod_path)
except ImportError as e:
raise ValueError("Couldn't load %r algorithm library: %s" %
(self.__class__.__name__, e))
return module
raise ValueError("Hasher %r doesn't specify a library attribute" %
self.__class__.__name__)
def salt(self):
"""Generate a cryptographically secure nonce salt in ASCII."""
return get_random_string()
def verify(self, password, encoded):
"""Check if the given password is correct."""
raise NotImplementedError('subclasses of BasePasswordHasher must provide a verify() method')
def encode(self, password, salt):
"""
Create an encoded database value.
The result is normally formatted as "algorithm$salt$hash" and
must be fewer than 128 characters.
"""
raise NotImplementedError('subclasses of BasePasswordHasher must provide an encode() method')
def safe_summary(self, encoded):
"""
Return a summary of safe values.
The result is a dictionary and will be used where the password field
must be displayed to construct a safe representation of the password.
"""
raise NotImplementedError('subclasses of BasePasswordHasher must provide a safe_summary() method')
def must_update(self, encoded):
return False
def harden_runtime(self, password, encoded):
"""
Bridge the runtime gap between the work factor supplied in `encoded`
and the work factor suggested by this hasher.
Taking PBKDF2 as an example, if `encoded` contains 20000 iterations and
`self.iterations` is 30000, this method should run password through
another 10000 iterations of PBKDF2. Similar approaches should exist
for any hasher that has a work factor. If not, this method should be
defined as a no-op to silence the warning.
"""
warnings.warn('subclasses of BasePasswordHasher should provide a harden_runtime() method')
class PBKDF2PasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the PBKDF2 algorithm (recommended)
Configured to use PBKDF2 + HMAC + SHA256.
The result is a 64 byte binary string. Iterations may be changed
safely but you must rename the algorithm if you change SHA256.
"""
algorithm = "pbkdf2_sha256"
iterations = 180000
digest = hashlib.sha256
def encode(self, password, salt, iterations=None):
assert password is not None
assert salt and '$' not in 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$%s" % (self.algorithm, iterations, salt, hash)
def verify(self, password, encoded):
algorithm, iterations, salt, hash = encoded.split('$', 3)
assert algorithm == self.algorithm
encoded_2 = self.encode(password, salt, int(iterations))
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
algorithm, iterations, salt, hash = encoded.split('$', 3)
assert algorithm == self.algorithm
return {
_('algorithm'): algorithm,
_('iterations'): iterations,
_('salt'): mask_hash(salt),
_('hash'): mask_hash(hash),
}
def must_update(self, encoded):
algorithm, iterations, salt, hash = encoded.split('$', 3)
return int(iterations) != self.iterations
def harden_runtime(self, password, encoded):
algorithm, iterations, salt, hash = encoded.split('$', 3)
extra_iterations = self.iterations - int(iterations)
if extra_iterations > 0:
self.encode(password, salt, extra_iterations)
class PBKDF2SHA1PasswordHasher(PBKDF2PasswordHasher):
"""
Alternate PBKDF2 hasher which uses SHA1, the default PRF
recommended by PKCS #5. This is compatible with other
implementations of PBKDF2, such as openssl's
PKCS5_PBKDF2_HMAC_SHA1().
"""
algorithm = "pbkdf2_sha1"
digest = hashlib.sha1
class Argon2PasswordHasher(BasePasswordHasher):
"""
Secure password hashing using the argon2 algorithm.
This is the winner of the Password Hashing Competition 2013-2015
(https://password-hashing.net). It requires the argon2-cffi library which
depends on native C code and might cause portability issues.
"""
algorithm = 'argon2'
library = 'argon2'
time_cost = 2
memory_cost = 512
parallelism = 2
def encode(self, password, salt):
argon2 = self._load_library()
data = argon2.low_level.hash_secret(
password.encode(),
salt.encode(),
time_cost=self.time_cost,
memory_cost=self.memory_cost,
parallelism=self.parallelism,
hash_len=argon2.DEFAULT_HASH_LENGTH,
type=argon2.low_level.Type.I,
)
return self.algorithm + data.decode('ascii')
def verify(self, password, encoded):
argon2 = self._load_library()
algorithm, rest = encoded.split('$', 1)
assert algorithm == self.algorithm
try:
return argon2.low_level.verify_secret(
('$' + rest).encode('ascii'),
password.encode(),
type=argon2.low_level.Type.I,
)
except argon2.exceptions.VerificationError:
return False
def safe_summary(self, encoded):
(algorithm, variety, version, time_cost, memory_cost, parallelism,
salt, data) = self._decode(encoded)
assert algorithm == self.algorithm
return {
_('algorithm'): algorithm,
_('variety'): variety,
_('version'): version,
_('memory cost'): memory_cost,
_('time cost'): time_cost,
_('parallelism'): parallelism,
_('salt'): mask_hash(salt),
_('hash'): mask_hash(data),
}
def must_update(self, encoded):
(algorithm, variety, version, time_cost, memory_cost, parallelism,
salt, data) = self._decode(encoded)
assert algorithm == self.algorithm
argon2 = self._load_library()
return (
argon2.low_level.ARGON2_VERSION != version or
self.time_cost != time_cost or
self.memory_cost != memory_cost or
self.parallelism != parallelism
)
def harden_runtime(self, password, encoded):
# The runtime for Argon2 is too complicated to implement a sensible
# hardening algorithm.
pass
def _decode(self, encoded):
"""
Split an encoded hash and return: (
algorithm, variety, version, time_cost, memory_cost,
parallelism, salt, data,
).
"""
bits = encoded.split('$')
if len(bits) == 5:
# Argon2 < 1.3
algorithm, variety, raw_params, salt, data = bits
version = 0x10
else:
assert len(bits) == 6
algorithm, variety, raw_version, raw_params, salt, data = bits
assert raw_version.startswith('v=')
version = int(raw_version[len('v='):])
params = dict(bit.split('=', 1) for bit in raw_params.split(','))
assert len(params) == 3 and all(x in params for x in ('t', 'm', 'p'))
time_cost = int(params['t'])
memory_cost = int(params['m'])
parallelism = int(params['p'])
return (
algorithm, variety, version, time_cost, memory_cost, parallelism,
salt, data,
)
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$%s" % (self.algorithm, data.decode('ascii'))
def verify(self, password, encoded):
algorithm, data = encoded.split('$', 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):
algorithm, empty, algostr, work_factor, data = encoded.split('$', 4)
assert algorithm == self.algorithm
salt, checksum = data[:22], data[22:]
return {
_('algorithm'): algorithm,
_('work factor'): work_factor,
_('salt'): mask_hash(salt),
_('checksum'): mask_hash(checksum),
}
def must_update(self, encoded):
algorithm, empty, algostr, rounds, data = encoded.split('$', 4)
return int(rounds) != 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 SHA1PasswordHasher(BasePasswordHasher):
"""
The SHA1 password hashing algorithm (not recommended)
"""
algorithm = "sha1"
def encode(self, password, salt):
assert password is not None
assert salt and '$' not in salt
hash = hashlib.sha1((salt + password).encode()).hexdigest()
return "%s$%s$%s" % (self.algorithm, salt, hash)
def verify(self, password, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
encoded_2 = self.encode(password, salt)
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
_('algorithm'): algorithm,
_('salt'): mask_hash(salt, show=2),
_('hash'): mask_hash(hash),
}
def harden_runtime(self, password, encoded):
pass
class MD5PasswordHasher(BasePasswordHasher):
"""
The Salted MD5 password hashing algorithm (not recommended)
"""
algorithm = "md5"
def encode(self, password, salt):
assert password is not None
assert salt and '$' not in salt
hash = hashlib.md5((salt + password).encode()).hexdigest()
return "%s$%s$%s" % (self.algorithm, salt, hash)
def verify(self, password, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
encoded_2 = self.encode(password, salt)
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
algorithm, salt, hash = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
_('algorithm'): algorithm,
_('salt'): mask_hash(salt, show=2),
_('hash'): mask_hash(hash),
}
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):
assert salt == ''
hash = hashlib.sha1(password.encode()).hexdigest()
return 'sha1$$%s' % hash
def verify(self, password, encoded):
encoded_2 = self.encode(password, '')
return constant_time_compare(encoded, encoded_2)
def safe_summary(self, encoded):
assert encoded.startswith('sha1$$')
hash = encoded[6:]
return {
_('algorithm'): self.algorithm,
_('hash'): mask_hash(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):
assert salt == ''
return hashlib.md5(password.encode()).hexdigest()
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):
return {
_('algorithm'): self.algorithm,
_('hash'): mask_hash(encoded, 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()
assert len(salt) == 2
data = crypt.crypt(password, salt)
assert data is not None # A platform like OpenBSD with a dummy crypt module.
# we don't need to store the salt, but Django used to do this
return "%s$%s$%s" % (self.algorithm, '', data)
def verify(self, password, encoded):
crypt = self._load_library()
algorithm, salt, data = encoded.split('$', 2)
assert algorithm == self.algorithm
return constant_time_compare(data, crypt.crypt(password, data))
def safe_summary(self, encoded):
algorithm, salt, data = encoded.split('$', 2)
assert algorithm == self.algorithm
return {
_('algorithm'): algorithm,
_('salt'): salt,
_('hash'): mask_hash(data, show=3),
}
def harden_runtime(self, password, encoded):
pass
|
61b56da0d6164a4a0b58a78f789d0f97abbac2b85aa31792f1d4ddde7ee15f0b | from django.conf import settings
from django.contrib import admin, messages
from django.contrib.admin.options import IS_POPUP_VAR
from django.contrib.admin.utils import unquote
from django.contrib.auth import update_session_auth_hash
from django.contrib.auth.forms import (
AdminPasswordChangeForm, UserChangeForm, UserCreationForm,
)
from django.contrib.auth.models import Group, User
from django.core.exceptions import PermissionDenied
from django.db import router, transaction
from django.http import Http404, HttpResponseRedirect
from django.template.response import TemplateResponse
from django.urls import path, reverse
from django.utils.decorators import method_decorator
from django.utils.html import escape
from django.utils.translation import gettext, gettext_lazy as _
from django.views.decorators.csrf import csrf_protect
from django.views.decorators.debug import sensitive_post_parameters
csrf_protect_m = method_decorator(csrf_protect)
sensitive_post_parameters_m = method_decorator(sensitive_post_parameters())
@admin.register(Group)
class GroupAdmin(admin.ModelAdmin):
search_fields = ('name',)
ordering = ('name',)
filter_horizontal = ('permissions',)
def formfield_for_manytomany(self, db_field, request=None, **kwargs):
if db_field.name == 'permissions':
qs = kwargs.get('queryset', db_field.remote_field.model.objects)
# Avoid a major performance hit resolving permission names which
# triggers a content_type load:
kwargs['queryset'] = qs.select_related('content_type')
return super().formfield_for_manytomany(db_field, request=request, **kwargs)
@admin.register(User)
class UserAdmin(admin.ModelAdmin):
add_form_template = 'admin/auth/user/add_form.html'
change_user_password_template = None
fieldsets = (
(None, {'fields': ('username', 'password')}),
(_('Personal info'), {'fields': ('first_name', 'last_name', 'email')}),
(_('Permissions'), {
'fields': ('is_active', 'is_staff', 'is_superuser', 'groups', 'user_permissions'),
}),
(_('Important dates'), {'fields': ('last_login', 'date_joined')}),
)
add_fieldsets = (
(None, {
'classes': ('wide',),
'fields': ('username', 'password1', 'password2'),
}),
)
form = UserChangeForm
add_form = UserCreationForm
change_password_form = AdminPasswordChangeForm
list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff')
list_filter = ('is_staff', 'is_superuser', 'is_active', 'groups')
search_fields = ('username', 'first_name', 'last_name', 'email')
ordering = ('username',)
filter_horizontal = ('groups', 'user_permissions',)
def get_fieldsets(self, request, obj=None):
if not obj:
return self.add_fieldsets
return super().get_fieldsets(request, obj)
def get_form(self, request, obj=None, **kwargs):
"""
Use special form during user creation
"""
defaults = {}
if obj is None:
defaults['form'] = self.add_form
defaults.update(kwargs)
return super().get_form(request, obj, **defaults)
def get_urls(self):
return [
path(
'<id>/password/',
self.admin_site.admin_view(self.user_change_password),
name='auth_user_password_change',
),
] + super().get_urls()
def lookup_allowed(self, lookup, value):
# Don't allow lookups involving passwords.
return not lookup.startswith('password') and super().lookup_allowed(lookup, value)
@sensitive_post_parameters_m
@csrf_protect_m
def add_view(self, request, form_url='', extra_context=None):
with transaction.atomic(using=router.db_for_write(self.model)):
return self._add_view(request, form_url, extra_context)
def _add_view(self, request, form_url='', extra_context=None):
# It's an error for a user to have add permission but NOT change
# permission for users. If we allowed such users to add users, they
# could create superusers, which would mean they would essentially have
# the permission to change users. To avoid the problem entirely, we
# disallow users from adding users if they don't have change
# permission.
if not self.has_change_permission(request):
if self.has_add_permission(request) and settings.DEBUG:
# Raise Http404 in debug mode so that the user gets a helpful
# error message.
raise Http404(
'Your user does not have the "Change user" permission. In '
'order to add users, Django requires that your user '
'account have both the "Add user" and "Change user" '
'permissions set.')
raise PermissionDenied
if extra_context is None:
extra_context = {}
username_field = self.model._meta.get_field(self.model.USERNAME_FIELD)
defaults = {
'auto_populated_fields': (),
'username_help_text': username_field.help_text,
}
extra_context.update(defaults)
return super().add_view(request, form_url, extra_context)
@sensitive_post_parameters_m
def user_change_password(self, request, id, form_url=''):
user = self.get_object(request, unquote(id))
if not self.has_change_permission(request, user):
raise PermissionDenied
if user is None:
raise Http404(_('%(name)s object with primary key %(key)r does not exist.') % {
'name': self.model._meta.verbose_name,
'key': escape(id),
})
if request.method == 'POST':
form = self.change_password_form(user, request.POST)
if form.is_valid():
form.save()
change_message = self.construct_change_message(request, form, None)
self.log_change(request, user, change_message)
msg = gettext('Password changed successfully.')
messages.success(request, msg)
update_session_auth_hash(request, form.user)
return HttpResponseRedirect(
reverse(
'%s:%s_%s_change' % (
self.admin_site.name,
user._meta.app_label,
user._meta.model_name,
),
args=(user.pk,),
)
)
else:
form = self.change_password_form(user)
fieldsets = [(None, {'fields': list(form.base_fields)})]
adminForm = admin.helpers.AdminForm(form, fieldsets, {})
context = {
'title': _('Change password: %s') % escape(user.get_username()),
'adminForm': adminForm,
'form_url': form_url,
'form': form,
'is_popup': (IS_POPUP_VAR in request.POST or
IS_POPUP_VAR in request.GET),
'add': True,
'change': False,
'has_delete_permission': False,
'has_change_permission': True,
'has_absolute_url': False,
'opts': self.model._meta,
'original': user,
'save_as': False,
'show_save': True,
**self.admin_site.each_context(request),
}
request.current_app = self.admin_site.name
return TemplateResponse(
request,
self.change_user_password_template or
'admin/auth/user/change_password.html',
context,
)
def response_add(self, request, obj, post_url_continue=None):
"""
Determine the HttpResponse for the add_view stage. It mostly defers to
its superclass implementation but is customized because the User model
has a slightly different workflow.
"""
# We should allow further modification of the user just added i.e. the
# 'Save' button should behave like the 'Save and continue editing'
# button except in two scenarios:
# * The user has pressed the 'Save and add another' button
# * We are adding a user in a popup
if '_addanother' not in request.POST and IS_POPUP_VAR not in request.POST:
request.POST = request.POST.copy()
request.POST['_continue'] = 1
return super().response_add(request, obj, post_url_continue)
|
817992dcc7bfc537ca4d37f93d2411c67d2c3c9983a74e3862b9dc5ebe7143b5 | """
This module allows importing AbstractBaseUser even when django.contrib.auth is
not in INSTALLED_APPS.
"""
import unicodedata
from django.contrib.auth import password_validation
from django.contrib.auth.hashers import (
check_password, is_password_usable, make_password,
)
from django.db import models
from django.utils.crypto import get_random_string, salted_hmac
from django.utils.translation import gettext_lazy as _
class BaseUserManager(models.Manager):
@classmethod
def normalize_email(cls, email):
"""
Normalize the email address by lowercasing the domain part of it.
"""
email = email or ''
try:
email_name, domain_part = email.strip().rsplit('@', 1)
except ValueError:
pass
else:
email = email_name + '@' + domain_part.lower()
return email
def make_random_password(self, length=10,
allowed_chars='abcdefghjkmnpqrstuvwxyz'
'ABCDEFGHJKLMNPQRSTUVWXYZ'
'23456789'):
"""
Generate a random password with the given length and given
allowed_chars. The default value of allowed_chars does not have "I" or
"O" or letters and digits that look similar -- just to avoid confusion.
"""
return get_random_string(length, allowed_chars)
def get_by_natural_key(self, username):
return self.get(**{self.model.USERNAME_FIELD: username})
class AbstractBaseUser(models.Model):
password = models.CharField(_('password'), max_length=128)
last_login = models.DateTimeField(_('last login'), blank=True, null=True)
is_active = True
REQUIRED_FIELDS = []
# Stores the raw password if set_password() is called so that it can
# be passed to password_changed() after the model is saved.
_password = None
class Meta:
abstract = True
def __str__(self):
return self.get_username()
def save(self, *args, **kwargs):
super().save(*args, **kwargs)
if self._password is not None:
password_validation.password_changed(self._password, self)
self._password = None
def get_username(self):
"""Return the username for this User."""
return getattr(self, self.USERNAME_FIELD)
def clean(self):
setattr(self, self.USERNAME_FIELD, self.normalize_username(self.get_username()))
def natural_key(self):
return (self.get_username(),)
@property
def is_anonymous(self):
"""
Always return False. This is a way of comparing User objects to
anonymous users.
"""
return False
@property
def is_authenticated(self):
"""
Always return True. This is a way to tell if the user has been
authenticated in templates.
"""
return True
def set_password(self, raw_password):
self.password = make_password(raw_password)
self._password = raw_password
def check_password(self, raw_password):
"""
Return a boolean of whether the raw_password was correct. Handles
hashing formats behind the scenes.
"""
def setter(raw_password):
self.set_password(raw_password)
# Password hash upgrades shouldn't be considered password changes.
self._password = None
self.save(update_fields=["password"])
return check_password(raw_password, self.password, setter)
def set_unusable_password(self):
# Set a value that will never be a valid hash
self.password = make_password(None)
def has_usable_password(self):
"""
Return False if set_unusable_password() has been called for this user.
"""
return is_password_usable(self.password)
def get_session_auth_hash(self):
"""
Return an HMAC of the password field.
"""
key_salt = "django.contrib.auth.models.AbstractBaseUser.get_session_auth_hash"
return salted_hmac(key_salt, self.password).hexdigest()
@classmethod
def get_email_field_name(cls):
try:
return cls.EMAIL_FIELD
except AttributeError:
return 'email'
@classmethod
def normalize_username(cls, username):
return unicodedata.normalize('NFKC', username) if isinstance(username, str) else username
|
ce82375205dd3acc560b315ea0e155c133d19e0bf59084620bb2396827ce043d | import unicodedata
from django import forms
from django.contrib.auth import (
authenticate, get_user_model, password_validation,
)
from django.contrib.auth.hashers import (
UNUSABLE_PASSWORD_PREFIX, identify_hasher,
)
from django.contrib.auth.models import User
from django.contrib.auth.tokens import default_token_generator
from django.contrib.sites.shortcuts import get_current_site
from django.core.mail import EmailMultiAlternatives
from django.template import loader
from django.utils.encoding import force_bytes
from django.utils.http import urlsafe_base64_encode
from django.utils.text import capfirst
from django.utils.translation import gettext, gettext_lazy as _
UserModel = get_user_model()
class ReadOnlyPasswordHashWidget(forms.Widget):
template_name = 'auth/widgets/read_only_password_hash.html'
read_only = True
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
summary = []
if not value or value.startswith(UNUSABLE_PASSWORD_PREFIX):
summary.append({'label': gettext("No password set.")})
else:
try:
hasher = identify_hasher(value)
except ValueError:
summary.append({'label': gettext("Invalid password format or unknown hashing algorithm.")})
else:
for key, value_ in hasher.safe_summary(value).items():
summary.append({'label': gettext(key), 'value': value_})
context['summary'] = summary
return context
class ReadOnlyPasswordHashField(forms.Field):
widget = ReadOnlyPasswordHashWidget
def __init__(self, *args, **kwargs):
kwargs.setdefault("required", False)
super().__init__(*args, **kwargs)
def bound_data(self, data, initial):
# Always return initial because the widget doesn't
# render an input field.
return initial
def has_changed(self, initial, data):
return False
class UsernameField(forms.CharField):
def to_python(self, value):
return unicodedata.normalize('NFKC', super().to_python(value))
def widget_attrs(self, widget):
attrs = super().widget_attrs(widget)
attrs['autocapitalize'] = 'none'
return attrs
class UserCreationForm(forms.ModelForm):
"""
A form that creates a user, with no privileges, from the given username and
password.
"""
error_messages = {
'password_mismatch': _("The two password fields didn't match."),
}
password1 = forms.CharField(
label=_("Password"),
strip=False,
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),
help_text=password_validation.password_validators_help_text_html(),
)
password2 = forms.CharField(
label=_("Password confirmation"),
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),
strip=False,
help_text=_("Enter the same password as before, for verification."),
)
class Meta:
model = User
fields = ("username",)
field_classes = {'username': UsernameField}
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if self._meta.model.USERNAME_FIELD in self.fields:
self.fields[self._meta.model.USERNAME_FIELD].widget.attrs.update({
'autocomplete': 'username',
'autofocus': True,
})
def clean_password2(self):
password1 = self.cleaned_data.get("password1")
password2 = self.cleaned_data.get("password2")
if password1 and password2 and password1 != password2:
raise forms.ValidationError(
self.error_messages['password_mismatch'],
code='password_mismatch',
)
return password2
def _post_clean(self):
super()._post_clean()
# Validate the password after self.instance is updated with form data
# by super().
password = self.cleaned_data.get('password2')
if password:
try:
password_validation.validate_password(password, self.instance)
except forms.ValidationError as error:
self.add_error('password2', error)
def save(self, commit=True):
user = super().save(commit=False)
user.set_password(self.cleaned_data["password1"])
if commit:
user.save()
return user
class UserChangeForm(forms.ModelForm):
password = ReadOnlyPasswordHashField(
label=_("Password"),
help_text=_(
"Raw passwords are not stored, so there is no way to see this "
"user's password, but you can change the password using "
"<a href=\"{}\">this form</a>."
),
)
class Meta:
model = User
fields = '__all__'
field_classes = {'username': UsernameField}
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
password = self.fields.get('password')
if password:
password.help_text = password.help_text.format('../password/')
user_permissions = self.fields.get('user_permissions')
if user_permissions:
user_permissions.queryset = user_permissions.queryset.select_related('content_type')
def clean_password(self):
# Regardless of what the user provides, return the initial value.
# This is done here, rather than on the field, because the
# field does not have access to the initial value
return self.initial.get('password')
class AuthenticationForm(forms.Form):
"""
Base class for authenticating users. Extend this to get a form that accepts
username/password logins.
"""
username = UsernameField(widget=forms.TextInput(attrs={'autocomplete': 'username', 'autofocus': True}))
password = forms.CharField(
label=_("Password"),
strip=False,
widget=forms.PasswordInput(attrs={'autocomplete': 'current-password'}),
)
error_messages = {
'invalid_login': _(
"Please enter a correct %(username)s and password. Note that both "
"fields may be case-sensitive."
),
'inactive': _("This account is inactive."),
}
def __init__(self, request=None, *args, **kwargs):
"""
The 'request' parameter is set for custom auth use by subclasses.
The form data comes in via the standard 'data' kwarg.
"""
self.request = request
self.user_cache = None
super().__init__(*args, **kwargs)
# Set the max length and label for the "username" field.
self.username_field = UserModel._meta.get_field(UserModel.USERNAME_FIELD)
self.fields['username'].max_length = self.username_field.max_length or 254
if self.fields['username'].label is None:
self.fields['username'].label = capfirst(self.username_field.verbose_name)
def clean(self):
username = self.cleaned_data.get('username')
password = self.cleaned_data.get('password')
if username is not None and password:
self.user_cache = authenticate(self.request, username=username, password=password)
if self.user_cache is None:
raise self.get_invalid_login_error()
else:
self.confirm_login_allowed(self.user_cache)
return self.cleaned_data
def confirm_login_allowed(self, user):
"""
Controls whether the given User may log in. This is a policy setting,
independent of end-user authentication. This default behavior is to
allow login by active users, and reject login by inactive users.
If the given user cannot log in, this method should raise a
``forms.ValidationError``.
If the given user may log in, this method should return None.
"""
if not user.is_active:
raise forms.ValidationError(
self.error_messages['inactive'],
code='inactive',
)
def get_user(self):
return self.user_cache
def get_invalid_login_error(self):
return forms.ValidationError(
self.error_messages['invalid_login'],
code='invalid_login',
params={'username': self.username_field.verbose_name},
)
class PasswordResetForm(forms.Form):
email = forms.EmailField(
label=_("Email"),
max_length=254,
widget=forms.EmailInput(attrs={'autocomplete': 'email'})
)
def send_mail(self, subject_template_name, email_template_name,
context, from_email, to_email, html_email_template_name=None):
"""
Send a django.core.mail.EmailMultiAlternatives to `to_email`.
"""
subject = loader.render_to_string(subject_template_name, context)
# Email subject *must not* contain newlines
subject = ''.join(subject.splitlines())
body = loader.render_to_string(email_template_name, context)
email_message = EmailMultiAlternatives(subject, body, from_email, [to_email])
if html_email_template_name is not None:
html_email = loader.render_to_string(html_email_template_name, context)
email_message.attach_alternative(html_email, 'text/html')
email_message.send()
def get_users(self, email):
"""Given an email, return matching user(s) who should receive a reset.
This allows subclasses to more easily customize the default policies
that prevent inactive users and users with unusable passwords from
resetting their password.
"""
active_users = UserModel._default_manager.filter(**{
'%s__iexact' % UserModel.get_email_field_name(): email,
'is_active': True,
})
return (u for u in active_users if u.has_usable_password())
def save(self, domain_override=None,
subject_template_name='registration/password_reset_subject.txt',
email_template_name='registration/password_reset_email.html',
use_https=False, token_generator=default_token_generator,
from_email=None, request=None, html_email_template_name=None,
extra_email_context=None):
"""
Generate a one-use only link for resetting password and send it to the
user.
"""
email = self.cleaned_data["email"]
for user in self.get_users(email):
if not domain_override:
current_site = get_current_site(request)
site_name = current_site.name
domain = current_site.domain
else:
site_name = domain = domain_override
context = {
'email': email,
'domain': domain,
'site_name': site_name,
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'user': user,
'token': token_generator.make_token(user),
'protocol': 'https' if use_https else 'http',
**(extra_email_context or {}),
}
self.send_mail(
subject_template_name, email_template_name, context, from_email,
email, html_email_template_name=html_email_template_name,
)
class SetPasswordForm(forms.Form):
"""
A form that lets a user change set their password without entering the old
password
"""
error_messages = {
'password_mismatch': _("The two password fields didn't match."),
}
new_password1 = forms.CharField(
label=_("New password"),
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),
strip=False,
help_text=password_validation.password_validators_help_text_html(),
)
new_password2 = forms.CharField(
label=_("New password confirmation"),
strip=False,
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),
)
def __init__(self, user, *args, **kwargs):
self.user = user
super().__init__(*args, **kwargs)
def clean_new_password2(self):
password1 = self.cleaned_data.get('new_password1')
password2 = self.cleaned_data.get('new_password2')
if password1 and password2:
if password1 != password2:
raise forms.ValidationError(
self.error_messages['password_mismatch'],
code='password_mismatch',
)
password_validation.validate_password(password2, self.user)
return password2
def save(self, commit=True):
password = self.cleaned_data["new_password1"]
self.user.set_password(password)
if commit:
self.user.save()
return self.user
class PasswordChangeForm(SetPasswordForm):
"""
A form that lets a user change their password by entering their old
password.
"""
error_messages = {
**SetPasswordForm.error_messages,
'password_incorrect': _("Your old password was entered incorrectly. Please enter it again."),
}
old_password = forms.CharField(
label=_("Old password"),
strip=False,
widget=forms.PasswordInput(attrs={'autocomplete': 'current-password', 'autofocus': True}),
)
field_order = ['old_password', 'new_password1', 'new_password2']
def clean_old_password(self):
"""
Validate that the old_password field is correct.
"""
old_password = self.cleaned_data["old_password"]
if not self.user.check_password(old_password):
raise forms.ValidationError(
self.error_messages['password_incorrect'],
code='password_incorrect',
)
return old_password
class AdminPasswordChangeForm(forms.Form):
"""
A form used to change the password of a user in the admin interface.
"""
error_messages = {
'password_mismatch': _("The two password fields didn't match."),
}
required_css_class = 'required'
password1 = forms.CharField(
label=_("Password"),
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password', 'autofocus': True}),
strip=False,
help_text=password_validation.password_validators_help_text_html(),
)
password2 = forms.CharField(
label=_("Password (again)"),
widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),
strip=False,
help_text=_("Enter the same password as before, for verification."),
)
def __init__(self, user, *args, **kwargs):
self.user = user
super().__init__(*args, **kwargs)
def clean_password2(self):
password1 = self.cleaned_data.get('password1')
password2 = self.cleaned_data.get('password2')
if password1 and password2:
if password1 != password2:
raise forms.ValidationError(
self.error_messages['password_mismatch'],
code='password_mismatch',
)
password_validation.validate_password(password2, self.user)
return password2
def save(self, commit=True):
"""Save the new password."""
password = self.cleaned_data["password1"]
self.user.set_password(password)
if commit:
self.user.save()
return self.user
@property
def changed_data(self):
data = super().changed_data
for name in self.fields:
if name not in data:
return []
return ['password']
|
040c6fd7f62e1017cf2f54eea6b3f717a1e0dd296c9eba11a4366c7d9ccfa4d4 | from urllib.parse import urlparse, urlunparse
from django.conf import settings
# Avoid shadowing the login() and logout() views below.
from django.contrib.auth import (
REDIRECT_FIELD_NAME, get_user_model, login as auth_login,
logout as auth_logout, update_session_auth_hash,
)
from django.contrib.auth.decorators import login_required
from django.contrib.auth.forms import (
AuthenticationForm, PasswordChangeForm, PasswordResetForm, SetPasswordForm,
)
from django.contrib.auth.tokens import default_token_generator
from django.contrib.sites.shortcuts import get_current_site
from django.core.exceptions import ValidationError
from django.http import HttpResponseRedirect, QueryDict
from django.shortcuts import resolve_url
from django.urls import reverse_lazy
from django.utils.decorators import method_decorator
from django.utils.http import is_safe_url, urlsafe_base64_decode
from django.utils.translation import gettext_lazy as _
from django.views.decorators.cache import never_cache
from django.views.decorators.csrf import csrf_protect
from django.views.decorators.debug import sensitive_post_parameters
from django.views.generic.base import TemplateView
from django.views.generic.edit import FormView
UserModel = get_user_model()
class SuccessURLAllowedHostsMixin:
success_url_allowed_hosts = set()
def get_success_url_allowed_hosts(self):
return {self.request.get_host(), *self.success_url_allowed_hosts}
class LoginView(SuccessURLAllowedHostsMixin, FormView):
"""
Display the login form and handle the login action.
"""
form_class = AuthenticationForm
authentication_form = None
redirect_field_name = REDIRECT_FIELD_NAME
template_name = 'registration/login.html'
redirect_authenticated_user = False
extra_context = None
@method_decorator(sensitive_post_parameters())
@method_decorator(csrf_protect)
@method_decorator(never_cache)
def dispatch(self, request, *args, **kwargs):
if self.redirect_authenticated_user and self.request.user.is_authenticated:
redirect_to = self.get_success_url()
if redirect_to == self.request.path:
raise ValueError(
"Redirection loop for authenticated user detected. Check that "
"your LOGIN_REDIRECT_URL doesn't point to a login page."
)
return HttpResponseRedirect(redirect_to)
return super().dispatch(request, *args, **kwargs)
def get_success_url(self):
url = self.get_redirect_url()
return url or resolve_url(settings.LOGIN_REDIRECT_URL)
def get_redirect_url(self):
"""Return the user-originating redirect URL if it's safe."""
redirect_to = self.request.POST.get(
self.redirect_field_name,
self.request.GET.get(self.redirect_field_name, '')
)
url_is_safe = is_safe_url(
url=redirect_to,
allowed_hosts=self.get_success_url_allowed_hosts(),
require_https=self.request.is_secure(),
)
return redirect_to if url_is_safe else ''
def get_form_class(self):
return self.authentication_form or self.form_class
def get_form_kwargs(self):
kwargs = super().get_form_kwargs()
kwargs['request'] = self.request
return kwargs
def form_valid(self, form):
"""Security check complete. Log the user in."""
auth_login(self.request, form.get_user())
return HttpResponseRedirect(self.get_success_url())
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
current_site = get_current_site(self.request)
context.update({
self.redirect_field_name: self.get_redirect_url(),
'site': current_site,
'site_name': current_site.name,
**(self.extra_context or {})
})
return context
class LogoutView(SuccessURLAllowedHostsMixin, TemplateView):
"""
Log out the user and display the 'You are logged out' message.
"""
next_page = None
redirect_field_name = REDIRECT_FIELD_NAME
template_name = 'registration/logged_out.html'
extra_context = None
@method_decorator(never_cache)
def dispatch(self, request, *args, **kwargs):
auth_logout(request)
next_page = self.get_next_page()
if next_page:
# Redirect to this page until the session has been cleared.
return HttpResponseRedirect(next_page)
return super().dispatch(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
"""Logout may be done via POST."""
return self.get(request, *args, **kwargs)
def get_next_page(self):
if self.next_page is not None:
next_page = resolve_url(self.next_page)
elif settings.LOGOUT_REDIRECT_URL:
next_page = resolve_url(settings.LOGOUT_REDIRECT_URL)
else:
next_page = self.next_page
if (self.redirect_field_name in self.request.POST or
self.redirect_field_name in self.request.GET):
next_page = self.request.POST.get(
self.redirect_field_name,
self.request.GET.get(self.redirect_field_name)
)
url_is_safe = is_safe_url(
url=next_page,
allowed_hosts=self.get_success_url_allowed_hosts(),
require_https=self.request.is_secure(),
)
# Security check -- Ensure the user-originating redirection URL is
# safe.
if not url_is_safe:
next_page = self.request.path
return next_page
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
current_site = get_current_site(self.request)
context.update({
'site': current_site,
'site_name': current_site.name,
'title': _('Logged out'),
**(self.extra_context or {})
})
return context
def logout_then_login(request, login_url=None):
"""
Log out the user if they are logged in. Then redirect to the login page.
"""
login_url = resolve_url(login_url or settings.LOGIN_URL)
return LogoutView.as_view(next_page=login_url)(request)
def redirect_to_login(next, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
"""
Redirect the user to the login page, passing the given 'next' page.
"""
resolved_url = resolve_url(login_url or settings.LOGIN_URL)
login_url_parts = list(urlparse(resolved_url))
if redirect_field_name:
querystring = QueryDict(login_url_parts[4], mutable=True)
querystring[redirect_field_name] = next
login_url_parts[4] = querystring.urlencode(safe='/')
return HttpResponseRedirect(urlunparse(login_url_parts))
# Class-based password reset views
# - PasswordResetView sends the mail
# - PasswordResetDoneView shows a success message for the above
# - PasswordResetConfirmView checks the link the user clicked and
# prompts for a new password
# - PasswordResetCompleteView shows a success message for the above
class PasswordContextMixin:
extra_context = None
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context.update({
'title': self.title,
**(self.extra_context or {})
})
return context
class PasswordResetView(PasswordContextMixin, FormView):
email_template_name = 'registration/password_reset_email.html'
extra_email_context = None
form_class = PasswordResetForm
from_email = None
html_email_template_name = None
subject_template_name = 'registration/password_reset_subject.txt'
success_url = reverse_lazy('password_reset_done')
template_name = 'registration/password_reset_form.html'
title = _('Password reset')
token_generator = default_token_generator
@method_decorator(csrf_protect)
def dispatch(self, *args, **kwargs):
return super().dispatch(*args, **kwargs)
def form_valid(self, form):
opts = {
'use_https': self.request.is_secure(),
'token_generator': self.token_generator,
'from_email': self.from_email,
'email_template_name': self.email_template_name,
'subject_template_name': self.subject_template_name,
'request': self.request,
'html_email_template_name': self.html_email_template_name,
'extra_email_context': self.extra_email_context,
}
form.save(**opts)
return super().form_valid(form)
INTERNAL_RESET_SESSION_TOKEN = '_password_reset_token'
class PasswordResetDoneView(PasswordContextMixin, TemplateView):
template_name = 'registration/password_reset_done.html'
title = _('Password reset sent')
class PasswordResetConfirmView(PasswordContextMixin, FormView):
form_class = SetPasswordForm
post_reset_login = False
post_reset_login_backend = None
reset_url_token = 'set-password'
success_url = reverse_lazy('password_reset_complete')
template_name = 'registration/password_reset_confirm.html'
title = _('Enter new password')
token_generator = default_token_generator
@method_decorator(sensitive_post_parameters())
@method_decorator(never_cache)
def dispatch(self, *args, **kwargs):
assert 'uidb64' in kwargs and 'token' in kwargs
self.validlink = False
self.user = self.get_user(kwargs['uidb64'])
if self.user is not None:
token = kwargs['token']
if token == self.reset_url_token:
session_token = self.request.session.get(INTERNAL_RESET_SESSION_TOKEN)
if self.token_generator.check_token(self.user, session_token):
# If the token is valid, display the password reset form.
self.validlink = True
return super().dispatch(*args, **kwargs)
else:
if self.token_generator.check_token(self.user, token):
# Store the token in the session and redirect to the
# password reset form at a URL without the token. That
# avoids the possibility of leaking the token in the
# HTTP Referer header.
self.request.session[INTERNAL_RESET_SESSION_TOKEN] = token
redirect_url = self.request.path.replace(token, self.reset_url_token)
return HttpResponseRedirect(redirect_url)
# Display the "Password reset unsuccessful" page.
return self.render_to_response(self.get_context_data())
def get_user(self, uidb64):
try:
# urlsafe_base64_decode() decodes to bytestring
uid = urlsafe_base64_decode(uidb64).decode()
user = UserModel._default_manager.get(pk=uid)
except (TypeError, ValueError, OverflowError, UserModel.DoesNotExist, ValidationError):
user = None
return user
def get_form_kwargs(self):
kwargs = super().get_form_kwargs()
kwargs['user'] = self.user
return kwargs
def form_valid(self, form):
user = form.save()
del self.request.session[INTERNAL_RESET_SESSION_TOKEN]
if self.post_reset_login:
auth_login(self.request, user, self.post_reset_login_backend)
return super().form_valid(form)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
if self.validlink:
context['validlink'] = True
else:
context.update({
'form': None,
'title': _('Password reset unsuccessful'),
'validlink': False,
})
return context
class PasswordResetCompleteView(PasswordContextMixin, TemplateView):
template_name = 'registration/password_reset_complete.html'
title = _('Password reset complete')
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['login_url'] = resolve_url(settings.LOGIN_URL)
return context
class PasswordChangeView(PasswordContextMixin, FormView):
form_class = PasswordChangeForm
success_url = reverse_lazy('password_change_done')
template_name = 'registration/password_change_form.html'
title = _('Password change')
@method_decorator(sensitive_post_parameters())
@method_decorator(csrf_protect)
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super().dispatch(*args, **kwargs)
def get_form_kwargs(self):
kwargs = super().get_form_kwargs()
kwargs['user'] = self.request.user
return kwargs
def form_valid(self, form):
form.save()
# Updating the password logs out all other sessions for the user
# except the current one.
update_session_auth_hash(self.request, form.user)
return super().form_valid(form)
class PasswordChangeDoneView(PasswordContextMixin, TemplateView):
template_name = 'registration/password_change_done.html'
title = _('Password change successful')
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super().dispatch(*args, **kwargs)
|
07f55ad9465716ed1aae5e5d82d06c7b4e0220f6100f9512e4551206778276ee | 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 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 whether 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 whether 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 whether 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 whether the password is 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().
"""
DEFAULT_PASSWORD_LIST_PATH = Path(__file__).resolve().parent / 'common-passwords.txt.gz'
def __init__(self, password_list_path=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 whether the password is alphanumeric.
"""
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.")
|
e12535245e437380375936dd738e4fc46bac3bcafaae0ced806e6811bfc984ac | import re
from django.core import validators
from django.utils.deconstruct import deconstructible
from django.utils.translation import gettext_lazy as _
@deconstructible
class ASCIIUsernameValidator(validators.RegexValidator):
regex = r'^[\w.@+-]+\Z'
message = _(
'Enter a valid username. This value may contain only English letters, '
'numbers, and @/./+/-/_ characters.'
)
flags = re.ASCII
@deconstructible
class UnicodeUsernameValidator(validators.RegexValidator):
regex = r'^[\w.@+-]+\Z'
message = _(
'Enter a valid username. This value may contain only letters, '
'numbers, and @/./+/-/_ characters.'
)
flags = 0
|
05acc14038ccce45c1490f54d25db02b80085ba94cd2d9388b6aa4241cdefb89 | import json
from django import forms
from django.conf import settings
from django.contrib.admin.utils import (
display_for_field, flatten_fieldsets, help_text_for_field, label_for_field,
lookup_field,
)
from django.core.exceptions import ObjectDoesNotExist
from django.db.models.fields.related import ManyToManyRel
from django.forms.utils import flatatt
from django.template.defaultfilters import capfirst, linebreaksbr
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 __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:
extra = '' if settings.DEBUG else '.min'
return forms.Media(js=['admin/js/collapse%s.js' % extra])
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)
self.field = {
'name': class_name,
'label': label,
'help_text': help_text,
'field': field,
}
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 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()))
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:
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': False},
'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())
|
5e922dd3643624c360dfd9a65e6f4a7cde394b5d483c0bc624f31662a6f8ceb0 | from itertools import chain
from django.apps import apps
from django.conf import settings
from django.contrib.admin.utils import (
NotRelationField, flatten, get_fields_from_path,
)
from django.core import checks
from django.core.exceptions import FieldDoesNotExist
from django.db import models
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import Combinable, F, OrderBy
from django.forms.models import (
BaseModelForm, BaseModelFormSet, _get_foreign_key,
)
from django.template import engines
from django.template.backends.django import DjangoTemplates
from django.utils.module_loading import import_string
def _issubclass(cls, classinfo):
"""
issubclass() variant that doesn't raise an exception if cls isn't a
class.
"""
try:
return issubclass(cls, classinfo)
except TypeError:
return False
def _contains_subclass(class_path, candidate_paths):
"""
Return whether or not a dotted class path (or a subclass of that class) is
found in a list of candidate paths.
"""
cls = import_string(class_path)
for path in candidate_paths:
try:
candidate_cls = import_string(path)
except ImportError:
# ImportErrors are raised elsewhere.
continue
if _issubclass(candidate_cls, cls):
return True
return False
def check_admin_app(app_configs, **kwargs):
from django.contrib.admin.sites import all_sites
errors = []
for site in all_sites:
errors.extend(site.check(app_configs))
return errors
def check_dependencies(**kwargs):
"""
Check that the admin's dependencies are correctly installed.
"""
if not apps.is_installed('django.contrib.admin'):
return []
errors = []
app_dependencies = (
('django.contrib.contenttypes', 401),
('django.contrib.auth', 405),
('django.contrib.messages', 406),
)
for app_name, error_code in app_dependencies:
if not apps.is_installed(app_name):
errors.append(checks.Error(
"'%s' must be in INSTALLED_APPS in order to use the admin "
"application." % app_name,
id='admin.E%d' % error_code,
))
for engine in engines.all():
if isinstance(engine, DjangoTemplates):
django_templates_instance = engine.engine
break
else:
django_templates_instance = None
if not django_templates_instance:
errors.append(checks.Error(
"A 'django.template.backends.django.DjangoTemplates' instance "
"must be configured in TEMPLATES in order to use the admin "
"application.",
id='admin.E403',
))
else:
if ('django.contrib.auth.context_processors.auth'
not in django_templates_instance.context_processors and
_contains_subclass('django.contrib.auth.backends.ModelBackend', settings.AUTHENTICATION_BACKENDS)):
errors.append(checks.Error(
"'django.contrib.auth.context_processors.auth' must be "
"enabled in DjangoTemplates (TEMPLATES) if using the default "
"auth backend in order to use the admin application.",
id='admin.E402',
))
if ('django.contrib.messages.context_processors.messages'
not in django_templates_instance.context_processors):
errors.append(checks.Error(
"'django.contrib.messages.context_processors.messages' must "
"be enabled in DjangoTemplates (TEMPLATES) in order to use "
"the admin application.",
id='admin.E404',
))
if not _contains_subclass('django.contrib.auth.middleware.AuthenticationMiddleware', settings.MIDDLEWARE):
errors.append(checks.Error(
"'django.contrib.auth.middleware.AuthenticationMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
id='admin.E408',
))
if not _contains_subclass('django.contrib.messages.middleware.MessageMiddleware', settings.MIDDLEWARE):
errors.append(checks.Error(
"'django.contrib.messages.middleware.MessageMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
id='admin.E409',
))
if not _contains_subclass('django.contrib.sessions.middleware.SessionMiddleware', settings.MIDDLEWARE):
errors.append(checks.Error(
"'django.contrib.sessions.middleware.SessionMiddleware' must "
"be in MIDDLEWARE in order to use the admin application.",
id='admin.E410',
))
return errors
class BaseModelAdminChecks:
def check(self, admin_obj, **kwargs):
return [
*self._check_autocomplete_fields(admin_obj),
*self._check_raw_id_fields(admin_obj),
*self._check_fields(admin_obj),
*self._check_fieldsets(admin_obj),
*self._check_exclude(admin_obj),
*self._check_form(admin_obj),
*self._check_filter_vertical(admin_obj),
*self._check_filter_horizontal(admin_obj),
*self._check_radio_fields(admin_obj),
*self._check_prepopulated_fields(admin_obj),
*self._check_view_on_site_url(admin_obj),
*self._check_ordering(admin_obj),
*self._check_readonly_fields(admin_obj),
]
def _check_autocomplete_fields(self, obj):
"""
Check that `autocomplete_fields` is a list or tuple of model fields.
"""
if not isinstance(obj.autocomplete_fields, (list, tuple)):
return must_be('a list or tuple', option='autocomplete_fields', obj=obj, id='admin.E036')
else:
return list(chain.from_iterable([
self._check_autocomplete_fields_item(obj, field_name, 'autocomplete_fields[%d]' % index)
for index, field_name in enumerate(obj.autocomplete_fields)
]))
def _check_autocomplete_fields_item(self, obj, field_name, label):
"""
Check that an item in `autocomplete_fields` is a ForeignKey or a
ManyToManyField and that the item has a related ModelAdmin with
search_fields defined.
"""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E037')
else:
if not field.many_to_many and not isinstance(field, models.ForeignKey):
return must_be(
'a foreign key or a many-to-many field',
option=label, obj=obj, id='admin.E038'
)
related_admin = obj.admin_site._registry.get(field.remote_field.model)
if related_admin is None:
return [
checks.Error(
'An admin for model "%s" has to be registered '
'to be referenced by %s.autocomplete_fields.' % (
field.remote_field.model.__name__,
type(obj).__name__,
),
obj=obj.__class__,
id='admin.E039',
)
]
elif not related_admin.search_fields:
return [
checks.Error(
'%s must define "search_fields", because it\'s '
'referenced by %s.autocomplete_fields.' % (
related_admin.__class__.__name__,
type(obj).__name__,
),
obj=obj.__class__,
id='admin.E040',
)
]
return []
def _check_raw_id_fields(self, obj):
""" Check that `raw_id_fields` only contains field names that are listed
on the model. """
if not isinstance(obj.raw_id_fields, (list, tuple)):
return must_be('a list or tuple', option='raw_id_fields', obj=obj, id='admin.E001')
else:
return list(chain.from_iterable(
self._check_raw_id_fields_item(obj, field_name, 'raw_id_fields[%d]' % index)
for index, field_name in enumerate(obj.raw_id_fields)
))
def _check_raw_id_fields_item(self, obj, field_name, label):
""" Check an item of `raw_id_fields`, i.e. check that field named
`field_name` exists in model `model` and is a ForeignKey or a
ManyToManyField. """
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E002')
else:
if not field.many_to_many and not isinstance(field, models.ForeignKey):
return must_be('a foreign key or a many-to-many field', option=label, obj=obj, id='admin.E003')
else:
return []
def _check_fields(self, obj):
""" Check that `fields` only refer to existing fields, doesn't contain
duplicates. Check if at most one of `fields` and `fieldsets` is defined.
"""
if obj.fields is None:
return []
elif not isinstance(obj.fields, (list, tuple)):
return must_be('a list or tuple', option='fields', obj=obj, id='admin.E004')
elif obj.fieldsets:
return [
checks.Error(
"Both 'fieldsets' and 'fields' are specified.",
obj=obj.__class__,
id='admin.E005',
)
]
fields = flatten(obj.fields)
if len(fields) != len(set(fields)):
return [
checks.Error(
"The value of 'fields' contains duplicate field(s).",
obj=obj.__class__,
id='admin.E006',
)
]
return list(chain.from_iterable(
self._check_field_spec(obj, field_name, 'fields')
for field_name in obj.fields
))
def _check_fieldsets(self, obj):
""" Check that fieldsets is properly formatted and doesn't contain
duplicates. """
if obj.fieldsets is None:
return []
elif not isinstance(obj.fieldsets, (list, tuple)):
return must_be('a list or tuple', option='fieldsets', obj=obj, id='admin.E007')
else:
seen_fields = []
return list(chain.from_iterable(
self._check_fieldsets_item(obj, fieldset, 'fieldsets[%d]' % index, seen_fields)
for index, fieldset in enumerate(obj.fieldsets)
))
def _check_fieldsets_item(self, obj, fieldset, label, seen_fields):
""" Check an item of `fieldsets`, i.e. check that this is a pair of a
set name and a dictionary containing "fields" key. """
if not isinstance(fieldset, (list, tuple)):
return must_be('a list or tuple', option=label, obj=obj, id='admin.E008')
elif len(fieldset) != 2:
return must_be('of length 2', option=label, obj=obj, id='admin.E009')
elif not isinstance(fieldset[1], dict):
return must_be('a dictionary', option='%s[1]' % label, obj=obj, id='admin.E010')
elif 'fields' not in fieldset[1]:
return [
checks.Error(
"The value of '%s[1]' must contain the key 'fields'." % label,
obj=obj.__class__,
id='admin.E011',
)
]
elif not isinstance(fieldset[1]['fields'], (list, tuple)):
return must_be('a list or tuple', option="%s[1]['fields']" % label, obj=obj, id='admin.E008')
seen_fields.extend(flatten(fieldset[1]['fields']))
if len(seen_fields) != len(set(seen_fields)):
return [
checks.Error(
"There are duplicate field(s) in '%s[1]'." % label,
obj=obj.__class__,
id='admin.E012',
)
]
return list(chain.from_iterable(
self._check_field_spec(obj, fieldset_fields, '%s[1]["fields"]' % label)
for fieldset_fields in fieldset[1]['fields']
))
def _check_field_spec(self, obj, fields, label):
""" `fields` should be an item of `fields` or an item of
fieldset[1]['fields'] for any `fieldset` in `fieldsets`. It should be a
field name or a tuple of field names. """
if isinstance(fields, tuple):
return list(chain.from_iterable(
self._check_field_spec_item(obj, field_name, "%s[%d]" % (label, index))
for index, field_name in enumerate(fields)
))
else:
return self._check_field_spec_item(obj, fields, label)
def _check_field_spec_item(self, obj, field_name, label):
if field_name in obj.readonly_fields:
# Stuff can be put in fields that isn't actually a model field if
# it's in readonly_fields, readonly_fields will handle the
# validation of such things.
return []
else:
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
# If we can't find a field on the model that matches, it could
# be an extra field on the form.
return []
else:
if (isinstance(field, models.ManyToManyField) and
not field.remote_field.through._meta.auto_created):
return [
checks.Error(
"The value of '%s' cannot include the ManyToManyField '%s', "
"because that field manually specifies a relationship model."
% (label, field_name),
obj=obj.__class__,
id='admin.E013',
)
]
else:
return []
def _check_exclude(self, obj):
""" Check that exclude is a sequence without duplicates. """
if obj.exclude is None: # default value is None
return []
elif not isinstance(obj.exclude, (list, tuple)):
return must_be('a list or tuple', option='exclude', obj=obj, id='admin.E014')
elif len(obj.exclude) > len(set(obj.exclude)):
return [
checks.Error(
"The value of 'exclude' contains duplicate field(s).",
obj=obj.__class__,
id='admin.E015',
)
]
else:
return []
def _check_form(self, obj):
""" Check that form subclasses BaseModelForm. """
if not _issubclass(obj.form, BaseModelForm):
return must_inherit_from(parent='BaseModelForm', option='form',
obj=obj, id='admin.E016')
else:
return []
def _check_filter_vertical(self, obj):
""" Check that filter_vertical is a sequence of field names. """
if not isinstance(obj.filter_vertical, (list, tuple)):
return must_be('a list or tuple', option='filter_vertical', obj=obj, id='admin.E017')
else:
return list(chain.from_iterable(
self._check_filter_item(obj, field_name, "filter_vertical[%d]" % index)
for index, field_name in enumerate(obj.filter_vertical)
))
def _check_filter_horizontal(self, obj):
""" Check that filter_horizontal is a sequence of field names. """
if not isinstance(obj.filter_horizontal, (list, tuple)):
return must_be('a list or tuple', option='filter_horizontal', obj=obj, id='admin.E018')
else:
return list(chain.from_iterable(
self._check_filter_item(obj, field_name, "filter_horizontal[%d]" % index)
for index, field_name in enumerate(obj.filter_horizontal)
))
def _check_filter_item(self, obj, field_name, label):
""" Check one item of `filter_vertical` or `filter_horizontal`, i.e.
check that given field exists and is a ManyToManyField. """
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E019')
else:
if not field.many_to_many:
return must_be('a many-to-many field', option=label, obj=obj, id='admin.E020')
else:
return []
def _check_radio_fields(self, obj):
""" Check that `radio_fields` is a dictionary. """
if not isinstance(obj.radio_fields, dict):
return must_be('a dictionary', option='radio_fields', obj=obj, id='admin.E021')
else:
return list(chain.from_iterable(
self._check_radio_fields_key(obj, field_name, 'radio_fields') +
self._check_radio_fields_value(obj, val, 'radio_fields["%s"]' % field_name)
for field_name, val in obj.radio_fields.items()
))
def _check_radio_fields_key(self, obj, field_name, label):
""" Check that a key of `radio_fields` dictionary is name of existing
field and that the field is a ForeignKey or has `choices` defined. """
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E022')
else:
if not (isinstance(field, models.ForeignKey) or field.choices):
return [
checks.Error(
"The value of '%s' refers to '%s', which is not an "
"instance of ForeignKey, and does not have a 'choices' definition." % (
label, field_name
),
obj=obj.__class__,
id='admin.E023',
)
]
else:
return []
def _check_radio_fields_value(self, obj, val, label):
""" Check type of a value of `radio_fields` dictionary. """
from django.contrib.admin.options import HORIZONTAL, VERTICAL
if val not in (HORIZONTAL, VERTICAL):
return [
checks.Error(
"The value of '%s' must be either admin.HORIZONTAL or admin.VERTICAL." % label,
obj=obj.__class__,
id='admin.E024',
)
]
else:
return []
def _check_view_on_site_url(self, obj):
if not callable(obj.view_on_site) and not isinstance(obj.view_on_site, bool):
return [
checks.Error(
"The value of 'view_on_site' must be a callable or a boolean value.",
obj=obj.__class__,
id='admin.E025',
)
]
else:
return []
def _check_prepopulated_fields(self, obj):
""" Check that `prepopulated_fields` is a dictionary containing allowed
field types. """
if not isinstance(obj.prepopulated_fields, dict):
return must_be('a dictionary', option='prepopulated_fields', obj=obj, id='admin.E026')
else:
return list(chain.from_iterable(
self._check_prepopulated_fields_key(obj, field_name, 'prepopulated_fields') +
self._check_prepopulated_fields_value(obj, val, 'prepopulated_fields["%s"]' % field_name)
for field_name, val in obj.prepopulated_fields.items()
))
def _check_prepopulated_fields_key(self, obj, field_name, label):
""" Check a key of `prepopulated_fields` dictionary, i.e. check that it
is a name of existing field and the field is one of the allowed types.
"""
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E027')
else:
if isinstance(field, (models.DateTimeField, models.ForeignKey, models.ManyToManyField)):
return [
checks.Error(
"The value of '%s' refers to '%s', which must not be a DateTimeField, "
"a ForeignKey, a OneToOneField, or a ManyToManyField." % (label, field_name),
obj=obj.__class__,
id='admin.E028',
)
]
else:
return []
def _check_prepopulated_fields_value(self, obj, val, label):
""" Check a value of `prepopulated_fields` dictionary, i.e. it's an
iterable of existing fields. """
if not isinstance(val, (list, tuple)):
return must_be('a list or tuple', option=label, obj=obj, id='admin.E029')
else:
return list(chain.from_iterable(
self._check_prepopulated_fields_value_item(obj, subfield_name, "%s[%r]" % (label, index))
for index, subfield_name in enumerate(val)
))
def _check_prepopulated_fields_value_item(self, obj, field_name, label):
""" For `prepopulated_fields` equal to {"slug": ("title",)},
`field_name` is "title". """
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E030')
else:
return []
def _check_ordering(self, obj):
""" Check that ordering refers to existing fields or is random. """
# ordering = None
if obj.ordering is None: # The default value is None
return []
elif not isinstance(obj.ordering, (list, tuple)):
return must_be('a list or tuple', option='ordering', obj=obj, id='admin.E031')
else:
return list(chain.from_iterable(
self._check_ordering_item(obj, field_name, 'ordering[%d]' % index)
for index, field_name in enumerate(obj.ordering)
))
def _check_ordering_item(self, obj, field_name, label):
""" Check that `ordering` refers to existing fields. """
if isinstance(field_name, (Combinable, OrderBy)):
if not isinstance(field_name, OrderBy):
field_name = field_name.asc()
if isinstance(field_name.expression, F):
field_name = field_name.expression.name
else:
return []
if field_name == '?' and len(obj.ordering) != 1:
return [
checks.Error(
"The value of 'ordering' has the random ordering marker '?', "
"but contains other fields as well.",
hint='Either remove the "?", or remove the other fields.',
obj=obj.__class__,
id='admin.E032',
)
]
elif field_name == '?':
return []
elif LOOKUP_SEP in field_name:
# Skip ordering in the format field1__field2 (FIXME: checking
# this format would be nice, but it's a little fiddly).
return []
else:
if field_name.startswith('-'):
field_name = field_name[1:]
if field_name == 'pk':
return []
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E033')
else:
return []
def _check_readonly_fields(self, obj):
""" Check that readonly_fields refers to proper attribute or field. """
if obj.readonly_fields == ():
return []
elif not isinstance(obj.readonly_fields, (list, tuple)):
return must_be('a list or tuple', option='readonly_fields', obj=obj, id='admin.E034')
else:
return list(chain.from_iterable(
self._check_readonly_fields_item(obj, field_name, "readonly_fields[%d]" % index)
for index, field_name in enumerate(obj.readonly_fields)
))
def _check_readonly_fields_item(self, obj, field_name, label):
if callable(field_name):
return []
elif hasattr(obj, field_name):
return []
elif hasattr(obj.model, field_name):
return []
else:
try:
obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return [
checks.Error(
"The value of '%s' is not a callable, an attribute of '%s', or an attribute of '%s.%s'." % (
label, obj.__class__.__name__, obj.model._meta.app_label, obj.model._meta.object_name
),
obj=obj.__class__,
id='admin.E035',
)
]
else:
return []
class ModelAdminChecks(BaseModelAdminChecks):
def check(self, admin_obj, **kwargs):
return [
*super().check(admin_obj),
*self._check_save_as(admin_obj),
*self._check_save_on_top(admin_obj),
*self._check_inlines(admin_obj),
*self._check_list_display(admin_obj),
*self._check_list_display_links(admin_obj),
*self._check_list_filter(admin_obj),
*self._check_list_select_related(admin_obj),
*self._check_list_per_page(admin_obj),
*self._check_list_max_show_all(admin_obj),
*self._check_list_editable(admin_obj),
*self._check_search_fields(admin_obj),
*self._check_date_hierarchy(admin_obj),
*self._check_action_permission_methods(admin_obj),
*self._check_actions_uniqueness(admin_obj),
]
def _check_save_as(self, obj):
""" Check save_as is a boolean. """
if not isinstance(obj.save_as, bool):
return must_be('a boolean', option='save_as',
obj=obj, id='admin.E101')
else:
return []
def _check_save_on_top(self, obj):
""" Check save_on_top is a boolean. """
if not isinstance(obj.save_on_top, bool):
return must_be('a boolean', option='save_on_top',
obj=obj, id='admin.E102')
else:
return []
def _check_inlines(self, obj):
""" Check all inline model admin classes. """
if not isinstance(obj.inlines, (list, tuple)):
return must_be('a list or tuple', option='inlines', obj=obj, id='admin.E103')
else:
return list(chain.from_iterable(
self._check_inlines_item(obj, item, "inlines[%d]" % index)
for index, item in enumerate(obj.inlines)
))
def _check_inlines_item(self, obj, inline, label):
""" Check one inline model admin. """
try:
inline_label = inline.__module__ + '.' + inline.__name__
except AttributeError:
return [
checks.Error(
"'%s' must inherit from 'InlineModelAdmin'." % obj,
obj=obj.__class__,
id='admin.E104',
)
]
from django.contrib.admin.options import InlineModelAdmin
if not _issubclass(inline, InlineModelAdmin):
return [
checks.Error(
"'%s' must inherit from 'InlineModelAdmin'." % inline_label,
obj=obj.__class__,
id='admin.E104',
)
]
elif not inline.model:
return [
checks.Error(
"'%s' must have a 'model' attribute." % inline_label,
obj=obj.__class__,
id='admin.E105',
)
]
elif not _issubclass(inline.model, models.Model):
return must_be('a Model', option='%s.model' % inline_label, obj=obj, id='admin.E106')
else:
return inline(obj.model, obj.admin_site).check()
def _check_list_display(self, obj):
""" Check that list_display only contains fields or usable attributes.
"""
if not isinstance(obj.list_display, (list, tuple)):
return must_be('a list or tuple', option='list_display', obj=obj, id='admin.E107')
else:
return list(chain.from_iterable(
self._check_list_display_item(obj, item, "list_display[%d]" % index)
for index, item in enumerate(obj.list_display)
))
def _check_list_display_item(self, obj, item, label):
if callable(item):
return []
elif hasattr(obj, item):
return []
elif hasattr(obj.model, item):
try:
field = obj.model._meta.get_field(item)
except FieldDoesNotExist:
return []
else:
if isinstance(field, models.ManyToManyField):
return [
checks.Error(
"The value of '%s' must not be a ManyToManyField." % label,
obj=obj.__class__,
id='admin.E109',
)
]
return []
else:
return [
checks.Error(
"The value of '%s' refers to '%s', which is not a callable, "
"an attribute of '%s', or an attribute or method on '%s.%s'." % (
label, item, obj.__class__.__name__,
obj.model._meta.app_label, obj.model._meta.object_name,
),
obj=obj.__class__,
id='admin.E108',
)
]
def _check_list_display_links(self, obj):
""" Check that list_display_links is a unique subset of list_display.
"""
from django.contrib.admin.options import ModelAdmin
if obj.list_display_links is None:
return []
elif not isinstance(obj.list_display_links, (list, tuple)):
return must_be('a list, a tuple, or None', option='list_display_links', obj=obj, id='admin.E110')
# Check only if ModelAdmin.get_list_display() isn't overridden.
elif obj.get_list_display.__func__ is ModelAdmin.get_list_display:
return list(chain.from_iterable(
self._check_list_display_links_item(obj, field_name, "list_display_links[%d]" % index)
for index, field_name in enumerate(obj.list_display_links)
))
return []
def _check_list_display_links_item(self, obj, field_name, label):
if field_name not in obj.list_display:
return [
checks.Error(
"The value of '%s' refers to '%s', which is not defined in 'list_display'." % (
label, field_name
),
obj=obj.__class__,
id='admin.E111',
)
]
else:
return []
def _check_list_filter(self, obj):
if not isinstance(obj.list_filter, (list, tuple)):
return must_be('a list or tuple', option='list_filter', obj=obj, id='admin.E112')
else:
return list(chain.from_iterable(
self._check_list_filter_item(obj, item, "list_filter[%d]" % index)
for index, item in enumerate(obj.list_filter)
))
def _check_list_filter_item(self, obj, item, label):
"""
Check one item of `list_filter`, i.e. check if it is one of three options:
1. 'field' -- a basic field filter, possibly w/ relationships (e.g.
'field__rel')
2. ('field', SomeFieldListFilter) - a field-based list filter class
3. SomeListFilter - a non-field list filter class
"""
from django.contrib.admin import ListFilter, FieldListFilter
if callable(item) and not isinstance(item, models.Field):
# If item is option 3, it should be a ListFilter...
if not _issubclass(item, ListFilter):
return must_inherit_from(parent='ListFilter', option=label,
obj=obj, id='admin.E113')
# ... but not a FieldListFilter.
elif issubclass(item, FieldListFilter):
return [
checks.Error(
"The value of '%s' must not inherit from 'FieldListFilter'." % label,
obj=obj.__class__,
id='admin.E114',
)
]
else:
return []
elif isinstance(item, (tuple, list)):
# item is option #2
field, list_filter_class = item
if not _issubclass(list_filter_class, FieldListFilter):
return must_inherit_from(parent='FieldListFilter', option='%s[1]' % label, obj=obj, id='admin.E115')
else:
return []
else:
# item is option #1
field = item
# Validate the field string
try:
get_fields_from_path(obj.model, field)
except (NotRelationField, FieldDoesNotExist):
return [
checks.Error(
"The value of '%s' refers to '%s', which does not refer to a Field." % (label, field),
obj=obj.__class__,
id='admin.E116',
)
]
else:
return []
def _check_list_select_related(self, obj):
""" Check that list_select_related is a boolean, a list or a tuple. """
if not isinstance(obj.list_select_related, (bool, list, tuple)):
return must_be('a boolean, tuple or list', option='list_select_related', obj=obj, id='admin.E117')
else:
return []
def _check_list_per_page(self, obj):
""" Check that list_per_page is an integer. """
if not isinstance(obj.list_per_page, int):
return must_be('an integer', option='list_per_page', obj=obj, id='admin.E118')
else:
return []
def _check_list_max_show_all(self, obj):
""" Check that list_max_show_all is an integer. """
if not isinstance(obj.list_max_show_all, int):
return must_be('an integer', option='list_max_show_all', obj=obj, id='admin.E119')
else:
return []
def _check_list_editable(self, obj):
""" Check that list_editable is a sequence of editable fields from
list_display without first element. """
if not isinstance(obj.list_editable, (list, tuple)):
return must_be('a list or tuple', option='list_editable', obj=obj, id='admin.E120')
else:
return list(chain.from_iterable(
self._check_list_editable_item(obj, item, "list_editable[%d]" % index)
for index, item in enumerate(obj.list_editable)
))
def _check_list_editable_item(self, obj, field_name, label):
try:
field = obj.model._meta.get_field(field_name)
except FieldDoesNotExist:
return refer_to_missing_field(field=field_name, option=label, obj=obj, id='admin.E121')
else:
if field_name not in obj.list_display:
return [
checks.Error(
"The value of '%s' refers to '%s', which is not "
"contained in 'list_display'." % (label, field_name),
obj=obj.__class__,
id='admin.E122',
)
]
elif obj.list_display_links and field_name in obj.list_display_links:
return [
checks.Error(
"The value of '%s' cannot be in both 'list_editable' and 'list_display_links'." % field_name,
obj=obj.__class__,
id='admin.E123',
)
]
# If list_display[0] is in list_editable, check that
# list_display_links is set. See #22792 and #26229 for use cases.
elif (obj.list_display[0] == field_name and not obj.list_display_links and
obj.list_display_links is not None):
return [
checks.Error(
"The value of '%s' refers to the first field in 'list_display' ('%s'), "
"which cannot be used unless 'list_display_links' is set." % (
label, obj.list_display[0]
),
obj=obj.__class__,
id='admin.E124',
)
]
elif not field.editable:
return [
checks.Error(
"The value of '%s' refers to '%s', which is not editable through the admin." % (
label, field_name
),
obj=obj.__class__,
id='admin.E125',
)
]
else:
return []
def _check_search_fields(self, obj):
""" Check search_fields is a sequence. """
if not isinstance(obj.search_fields, (list, tuple)):
return must_be('a list or tuple', option='search_fields', obj=obj, id='admin.E126')
else:
return []
def _check_date_hierarchy(self, obj):
""" Check that date_hierarchy refers to DateField or DateTimeField. """
if obj.date_hierarchy is None:
return []
else:
try:
field = get_fields_from_path(obj.model, obj.date_hierarchy)[-1]
except (NotRelationField, FieldDoesNotExist):
return [
checks.Error(
"The value of 'date_hierarchy' refers to '%s', which "
"does not refer to a Field." % obj.date_hierarchy,
obj=obj.__class__,
id='admin.E127',
)
]
else:
if not isinstance(field, (models.DateField, models.DateTimeField)):
return must_be('a DateField or DateTimeField', option='date_hierarchy', obj=obj, id='admin.E128')
else:
return []
def _check_action_permission_methods(self, obj):
"""
Actions with an allowed_permission attribute require the ModelAdmin to
implement a has_<perm>_permission() method for each permission.
"""
actions = obj._get_base_actions()
errors = []
for func, name, _ in actions:
if not hasattr(func, 'allowed_permissions'):
continue
for permission in func.allowed_permissions:
method_name = 'has_%s_permission' % permission
if not hasattr(obj, method_name):
errors.append(
checks.Error(
'%s must define a %s() method for the %s action.' % (
obj.__class__.__name__,
method_name,
func.__name__,
),
obj=obj.__class__,
id='admin.E129',
)
)
return errors
def _check_actions_uniqueness(self, obj):
"""Check that every action has a unique __name__."""
names = [name for _, name, _ in obj._get_base_actions()]
if len(names) != len(set(names)):
return [checks.Error(
'__name__ attributes of actions defined in %s must be '
'unique.' % obj.__class__,
obj=obj.__class__,
id='admin.E130',
)]
return []
class InlineModelAdminChecks(BaseModelAdminChecks):
def check(self, inline_obj, **kwargs):
parent_model = inline_obj.parent_model
return [
*super().check(inline_obj),
*self._check_relation(inline_obj, parent_model),
*self._check_exclude_of_parent_model(inline_obj, parent_model),
*self._check_extra(inline_obj),
*self._check_max_num(inline_obj),
*self._check_min_num(inline_obj),
*self._check_formset(inline_obj),
]
def _check_exclude_of_parent_model(self, obj, parent_model):
# Do not perform more specific checks if the base checks result in an
# error.
errors = super()._check_exclude(obj)
if errors:
return []
# Skip if `fk_name` is invalid.
if self._check_relation(obj, parent_model):
return []
if obj.exclude is None:
return []
fk = _get_foreign_key(parent_model, obj.model, fk_name=obj.fk_name)
if fk.name in obj.exclude:
return [
checks.Error(
"Cannot exclude the field '%s', because it is the foreign key "
"to the parent model '%s.%s'." % (
fk.name, parent_model._meta.app_label, parent_model._meta.object_name
),
obj=obj.__class__,
id='admin.E201',
)
]
else:
return []
def _check_relation(self, obj, parent_model):
try:
_get_foreign_key(parent_model, obj.model, fk_name=obj.fk_name)
except ValueError as e:
return [checks.Error(e.args[0], obj=obj.__class__, id='admin.E202')]
else:
return []
def _check_extra(self, obj):
""" Check that extra is an integer. """
if not isinstance(obj.extra, int):
return must_be('an integer', option='extra', obj=obj, id='admin.E203')
else:
return []
def _check_max_num(self, obj):
""" Check that max_num is an integer. """
if obj.max_num is None:
return []
elif not isinstance(obj.max_num, int):
return must_be('an integer', option='max_num', obj=obj, id='admin.E204')
else:
return []
def _check_min_num(self, obj):
""" Check that min_num is an integer. """
if obj.min_num is None:
return []
elif not isinstance(obj.min_num, int):
return must_be('an integer', option='min_num', obj=obj, id='admin.E205')
else:
return []
def _check_formset(self, obj):
""" Check formset is a subclass of BaseModelFormSet. """
if not _issubclass(obj.formset, BaseModelFormSet):
return must_inherit_from(parent='BaseModelFormSet', option='formset', obj=obj, id='admin.E206')
else:
return []
def must_be(type, option, obj, id):
return [
checks.Error(
"The value of '%s' must be %s." % (option, type),
obj=obj.__class__,
id=id,
),
]
def must_inherit_from(parent, option, obj, id):
return [
checks.Error(
"The value of '%s' must inherit from '%s'." % (option, parent),
obj=obj.__class__,
id=id,
),
]
def refer_to_missing_field(field, option, obj, id):
return [
checks.Error(
"The value of '%s' refers to '%s', which is not an attribute of '%s.%s'." % (
option, field, obj.model._meta.app_label, obj.model._meta.object_name
),
obj=obj.__class__,
id=id,
),
]
|
060278ff85f8eca3b443cb43ceaf18b33870dbfce1ca348b35ef22f2227a549c | import json
from django.conf import settings
from django.contrib.admin.utils import quote
from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.urls import NoReverseMatch, reverse
from django.utils import timezone
from django.utils.text import get_text_list
from django.utils.translation import gettext, gettext_lazy as _
ADDITION = 1
CHANGE = 2
DELETION = 3
ACTION_FLAG_CHOICES = (
(ADDITION, _('Addition')),
(CHANGE, _('Change')),
(DELETION, _('Deletion')),
)
class LogEntryManager(models.Manager):
use_in_migrations = True
def log_action(self, user_id, content_type_id, object_id, object_repr, action_flag, change_message=''):
if isinstance(change_message, list):
change_message = json.dumps(change_message)
return self.model.objects.create(
user_id=user_id,
content_type_id=content_type_id,
object_id=str(object_id),
object_repr=object_repr[:200],
action_flag=action_flag,
change_message=change_message,
)
class LogEntry(models.Model):
action_time = models.DateTimeField(
_('action time'),
default=timezone.now,
editable=False,
)
user = models.ForeignKey(
settings.AUTH_USER_MODEL,
models.CASCADE,
verbose_name=_('user'),
)
content_type = models.ForeignKey(
ContentType,
models.SET_NULL,
verbose_name=_('content type'),
blank=True, null=True,
)
object_id = models.TextField(_('object id'), blank=True, null=True)
# Translators: 'repr' means representation (https://docs.python.org/library/functions.html#repr)
object_repr = models.CharField(_('object repr'), max_length=200)
action_flag = models.PositiveSmallIntegerField(_('action flag'), choices=ACTION_FLAG_CHOICES)
# change_message is either a string or a JSON structure
change_message = models.TextField(_('change message'), blank=True)
objects = LogEntryManager()
class Meta:
verbose_name = _('log entry')
verbose_name_plural = _('log entries')
db_table = 'django_admin_log'
ordering = ('-action_time',)
def __repr__(self):
return str(self.action_time)
def __str__(self):
if self.is_addition():
return gettext('Added "%(object)s".') % {'object': self.object_repr}
elif self.is_change():
return gettext('Changed "%(object)s" - %(changes)s') % {
'object': self.object_repr,
'changes': self.get_change_message(),
}
elif self.is_deletion():
return gettext('Deleted "%(object)s."') % {'object': self.object_repr}
return gettext('LogEntry Object')
def is_addition(self):
return self.action_flag == ADDITION
def is_change(self):
return self.action_flag == CHANGE
def is_deletion(self):
return self.action_flag == DELETION
def get_change_message(self):
"""
If self.change_message is a JSON structure, interpret it as a change
string, properly translated.
"""
if self.change_message and self.change_message[0] == '[':
try:
change_message = json.loads(self.change_message)
except json.JSONDecodeError:
return self.change_message
messages = []
for sub_message in change_message:
if 'added' in sub_message:
if sub_message['added']:
sub_message['added']['name'] = gettext(sub_message['added']['name'])
messages.append(gettext('Added {name} "{object}".').format(**sub_message['added']))
else:
messages.append(gettext('Added.'))
elif 'changed' in sub_message:
sub_message['changed']['fields'] = get_text_list(
[gettext(field_name) for field_name in sub_message['changed']['fields']], gettext('and')
)
if 'name' in sub_message['changed']:
sub_message['changed']['name'] = gettext(sub_message['changed']['name'])
messages.append(gettext('Changed {fields} for {name} "{object}".').format(
**sub_message['changed']
))
else:
messages.append(gettext('Changed {fields}.').format(**sub_message['changed']))
elif 'deleted' in sub_message:
sub_message['deleted']['name'] = gettext(sub_message['deleted']['name'])
messages.append(gettext('Deleted {name} "{object}".').format(**sub_message['deleted']))
change_message = ' '.join(msg[0].upper() + msg[1:] for msg in messages)
return change_message or gettext('No fields changed.')
else:
return self.change_message
def get_edited_object(self):
"""Return the edited object represented by this log entry."""
return self.content_type.get_object_for_this_type(pk=self.object_id)
def get_admin_url(self):
"""
Return the admin URL to edit the object represented by this log entry.
"""
if self.content_type and self.object_id:
url_name = 'admin:%s_%s_change' % (self.content_type.app_label, self.content_type.model)
try:
return reverse(url_name, args=(quote(self.object_id),))
except NoReverseMatch:
pass
return None
|
094ccd8ccba6cd15e5244cf53f21f2551ad670596916c5b0e837ec1d054bb928 | import copy
import json
import operator
import re
from functools import partial, reduce, 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.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_needs_distinct, model_format_dict,
model_ngettext, quote, unquote,
)
from django.contrib.admin.views.autocomplete import AutocompleteJsonView
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.db.models.fields import BLANK_CHOICE_DASH
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
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.remote_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')
autocomplete_fields = self.get_autocomplete_fields(request)
if db_field.name in autocomplete_fields:
kwargs['widget'] = AutocompleteSelectMultiple(db_field.remote_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 self.view_on_site and 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 = ()
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 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('autocomplete/', wrap(self.autocomplete_view), name='%s_%s_autocomplete' % 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%s.js' % extra,
'urlify.js',
'prepopulate%s.js' % extra,
'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,
)
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, object, message):
"""
Log that an object has been successfully added.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import LogEntry, ADDITION
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(object).pk,
object_id=object.pk,
object_repr=str(object),
action_flag=ADDITION,
change_message=message,
)
def log_change(self, request, object, message):
"""
Log that an object has been successfully changed.
The default implementation creates an admin LogEntry object.
"""
from django.contrib.admin.models import LogEntry, CHANGE
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(object).pk,
object_id=object.pk,
object_repr=str(object),
action_flag=CHANGE,
change_message=message,
)
def log_deletion(self, request, object, 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 LogEntry, DELETION
return LogEntry.objects.log_action(
user_id=request.user.pk,
content_type_id=get_content_type_for_model(object).pk,
object_id=object.pk,
object_repr=object_repr,
action_flag=DELETION,
)
def action_checkbox(self, obj):
"""
A list_display column containing a checkbox widget.
"""
return helpers.checkbox.render(helpers.ACTION_CHECKBOX_NAME, str(obj.pk))
action_checkbox.short_description = mark_safe('<input type="checkbox" id="action-toggle">')
def _get_base_actions(self):
"""Return the list of actions, prior to any request-based filtering."""
actions = []
# Gather actions from the admin site first
for (name, func) in self.admin_site.actions:
description = getattr(func, 'short_description', name.replace('_', ' '))
actions.append((func, name, description))
# Add actions from this ModelAdmin.
actions.extend(self.get_action(action) for action in self.actions or [])
# get_action might have returned None, so filter any of those out.
return filter(None, 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=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
if hasattr(func, 'short_description'):
description = func.short_description
else:
description = capfirst(action.replace('_', ' '))
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
use_distinct = 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 search_term.split():
or_queries = [models.Q(**{orm_lookup: bit})
for orm_lookup in orm_lookups]
queryset = queryset.filter(reduce(operator.or_, or_queries))
use_distinct |= any(lookup_needs_distinct(self.opts, search_spec) for search_spec in orm_lookups)
return queryset, use_distinct
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`' % l for l 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):
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))
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)
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 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)
ModelForm = self.get_form(request, obj, change=not add)
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(self.get_fieldsets(request, obj))
else:
readonly_fields = self.get_readonly_fields(request, obj)
adminForm = helpers.AdminForm(
form,
list(self.get_fieldsets(request, obj)),
# 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,
'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 autocomplete_view(self, request):
return AutocompleteJsonView.as_view(model_admin=self)(request)
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(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,
'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,
'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,
'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 _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 = {
'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
})
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 is None:
self.verbose_name = self.model._meta.verbose_name
if self.verbose_name_plural is None:
self.verbose_name_plural = self.model._meta.verbose_name_plural
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = ['vendor/jquery/jquery%s.js' % extra, 'jquery.init.js',
'inlines%s.js' % extra]
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%s.js' % extra)
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'
|
90e99507a06d81dd207de9e1d18d27052a5717a5c91d5caf4b35006cd046b88e | import re
from functools import update_wrapper
from weakref import WeakSet
from django.apps import apps
from django.contrib.admin import ModelAdmin, actions
from django.contrib.auth import REDIRECT_FIELD_NAME
from django.core.exceptions import ImproperlyConfigured
from django.db.models.base import ModelBase
from django.http import Http404, HttpResponseRedirect
from django.template.response import TemplateResponse
from django.urls import NoReverseMatch, reverse
from django.utils.functional import LazyObject
from django.utils.module_loading import import_string
from django.utils.text import capfirst
from django.utils.translation import gettext as _, gettext_lazy
from django.views.decorators.cache import never_cache
from django.views.decorators.csrf import csrf_protect
from django.views.i18n import JavaScriptCatalog
all_sites = WeakSet()
class AlreadyRegistered(Exception):
pass
class NotRegistered(Exception):
pass
class AdminSite:
"""
An AdminSite object encapsulates an instance of the Django admin application, ready
to be hooked in to your URLconf. Models are registered with the AdminSite using the
register() method, and the get_urls() method can then be used to access Django view
functions that present a full admin interface for the collection of registered
models.
"""
# Text to put at the end of each page's <title>.
site_title = gettext_lazy('Django site admin')
# Text to put in each page's <h1>.
site_header = gettext_lazy('Django administration')
# Text to put at the top of the admin index page.
index_title = gettext_lazy('Site administration')
# URL for the "View site" link at the top of each admin page.
site_url = '/'
_empty_value_display = '-'
login_form = None
index_template = None
app_index_template = None
login_template = None
logout_template = None
password_change_template = None
password_change_done_template = None
def __init__(self, name='admin'):
self._registry = {} # model_class class -> admin_class instance
self.name = name
self._actions = {'delete_selected': actions.delete_selected}
self._global_actions = self._actions.copy()
all_sites.add(self)
def check(self, app_configs):
"""
Run the system checks on all ModelAdmins, except if they aren't
customized at all.
"""
if app_configs is None:
app_configs = apps.get_app_configs()
app_configs = set(app_configs) # Speed up lookups below
errors = []
modeladmins = (o for o in self._registry.values() if o.__class__ is not ModelAdmin)
for modeladmin in modeladmins:
if modeladmin.model._meta.app_config in app_configs:
errors.extend(modeladmin.check())
return errors
def register(self, model_or_iterable, admin_class=None, **options):
"""
Register the given model(s) with the given admin class.
The model(s) should be Model classes, not instances.
If an admin class isn't given, use ModelAdmin (the default admin
options). If keyword arguments are given -- e.g., list_display --
apply them as options to the admin class.
If a model is already registered, raise AlreadyRegistered.
If a model is abstract, raise ImproperlyConfigured.
"""
admin_class = admin_class or ModelAdmin
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if model._meta.abstract:
raise ImproperlyConfigured(
'The model %s is abstract, so it cannot be registered with admin.' % model.__name__
)
if model in self._registry:
registered_admin = str(self._registry[model])
msg = 'The model %s is already registered ' % model.__name__
if registered_admin.endswith('.ModelAdmin'):
# Most likely registered without a ModelAdmin subclass.
msg += 'in app %r.' % re.sub(r'\.ModelAdmin$', '', registered_admin)
else:
msg += 'with %r.' % registered_admin
raise AlreadyRegistered(msg)
# Ignore the registration if the model has been
# swapped out.
if not model._meta.swapped:
# If we got **options then dynamically construct a subclass of
# admin_class with those **options.
if options:
# For reasons I don't quite understand, without a __module__
# the created class appears to "live" in the wrong place,
# which causes issues later on.
options['__module__'] = __name__
admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)
# Instantiate the admin class to save in the registry
self._registry[model] = admin_class(model, self)
def unregister(self, model_or_iterable):
"""
Unregister the given model(s).
If a model isn't already registered, raise NotRegistered.
"""
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if model not in self._registry:
raise NotRegistered('The model %s is not registered' % model.__name__)
del self._registry[model]
def is_registered(self, model):
"""
Check if a model class is registered with this `AdminSite`.
"""
return model in self._registry
def add_action(self, action, name=None):
"""
Register an action to be available globally.
"""
name = name or action.__name__
self._actions[name] = action
self._global_actions[name] = action
def disable_action(self, name):
"""
Disable a globally-registered action. Raise KeyError for invalid names.
"""
del self._actions[name]
def get_action(self, name):
"""
Explicitly get a registered global action whether it's enabled or
not. Raise KeyError for invalid names.
"""
return self._global_actions[name]
@property
def actions(self):
"""
Get all the enabled actions as an iterable of (name, func).
"""
return self._actions.items()
@property
def empty_value_display(self):
return self._empty_value_display
@empty_value_display.setter
def empty_value_display(self, empty_value_display):
self._empty_value_display = empty_value_display
def has_permission(self, request):
"""
Return True if the given HttpRequest has permission to view
*at least one* page in the admin site.
"""
return request.user.is_active and request.user.is_staff
def admin_view(self, view, cacheable=False):
"""
Decorator to create an admin view attached to this ``AdminSite``. This
wraps the view and provides permission checking by calling
``self.has_permission``.
You'll want to use this from within ``AdminSite.get_urls()``:
class MyAdminSite(AdminSite):
def get_urls(self):
from django.urls import path
urls = super().get_urls()
urls += [
path('my_view/', self.admin_view(some_view))
]
return urls
By default, admin_views are marked non-cacheable using the
``never_cache`` decorator. If the view can be safely cached, set
cacheable=True.
"""
def inner(request, *args, **kwargs):
if not self.has_permission(request):
if request.path == reverse('admin:logout', current_app=self.name):
index_path = reverse('admin:index', current_app=self.name)
return HttpResponseRedirect(index_path)
# Inner import to prevent django.contrib.admin (app) from
# importing django.contrib.auth.models.User (unrelated model).
from django.contrib.auth.views import redirect_to_login
return redirect_to_login(
request.get_full_path(),
reverse('admin:login', current_app=self.name)
)
return view(request, *args, **kwargs)
if not cacheable:
inner = never_cache(inner)
# We add csrf_protect here so this function can be used as a utility
# function for any view, without having to repeat 'csrf_protect'.
if not getattr(view, 'csrf_exempt', False):
inner = csrf_protect(inner)
return update_wrapper(inner, view)
def get_urls(self):
from django.urls import include, path, re_path
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level,
# and django.contrib.contenttypes.views imports ContentType.
from django.contrib.contenttypes import views as contenttype_views
def wrap(view, cacheable=False):
def wrapper(*args, **kwargs):
return self.admin_view(view, cacheable)(*args, **kwargs)
wrapper.admin_site = self
return update_wrapper(wrapper, view)
# Admin-site-wide views.
urlpatterns = [
path('', wrap(self.index), name='index'),
path('login/', self.login, name='login'),
path('logout/', wrap(self.logout), name='logout'),
path('password_change/', wrap(self.password_change, cacheable=True), name='password_change'),
path(
'password_change/done/',
wrap(self.password_change_done, cacheable=True),
name='password_change_done',
),
path('jsi18n/', wrap(self.i18n_javascript, cacheable=True), name='jsi18n'),
path(
'r/<int:content_type_id>/<path:object_id>/',
wrap(contenttype_views.shortcut),
name='view_on_site',
),
]
# Add in each model's views, and create a list of valid URLS for the
# app_index
valid_app_labels = []
for model, model_admin in self._registry.items():
urlpatterns += [
path('%s/%s/' % (model._meta.app_label, model._meta.model_name), include(model_admin.urls)),
]
if model._meta.app_label not in valid_app_labels:
valid_app_labels.append(model._meta.app_label)
# If there were ModelAdmins registered, we should have a list of app
# labels for which we need to allow access to the app_index view,
if valid_app_labels:
regex = r'^(?P<app_label>' + '|'.join(valid_app_labels) + ')/$'
urlpatterns += [
re_path(regex, wrap(self.app_index), name='app_list'),
]
return urlpatterns
@property
def urls(self):
return self.get_urls(), 'admin', self.name
def each_context(self, request):
"""
Return a dictionary of variables to put in the template context for
*every* page in the admin site.
For sites running on a subpath, use the SCRIPT_NAME value if site_url
hasn't been customized.
"""
script_name = request.META['SCRIPT_NAME']
site_url = script_name if self.site_url == '/' and script_name else self.site_url
return {
'site_title': self.site_title,
'site_header': self.site_header,
'site_url': site_url,
'has_permission': self.has_permission(request),
'available_apps': self.get_app_list(request),
'is_popup': False,
}
def password_change(self, request, extra_context=None):
"""
Handle the "change password" task -- both form display and validation.
"""
from django.contrib.admin.forms import AdminPasswordChangeForm
from django.contrib.auth.views import PasswordChangeView
url = reverse('admin:password_change_done', current_app=self.name)
defaults = {
'form_class': AdminPasswordChangeForm,
'success_url': url,
'extra_context': {**self.each_context(request), **(extra_context or {})},
}
if self.password_change_template is not None:
defaults['template_name'] = self.password_change_template
request.current_app = self.name
return PasswordChangeView.as_view(**defaults)(request)
def password_change_done(self, request, extra_context=None):
"""
Display the "success" page after a password change.
"""
from django.contrib.auth.views import PasswordChangeDoneView
defaults = {
'extra_context': {**self.each_context(request), **(extra_context or {})},
}
if self.password_change_done_template is not None:
defaults['template_name'] = self.password_change_done_template
request.current_app = self.name
return PasswordChangeDoneView.as_view(**defaults)(request)
def i18n_javascript(self, request, extra_context=None):
"""
Display the i18n JavaScript that the Django admin requires.
`extra_context` is unused but present for consistency with the other
admin views.
"""
return JavaScriptCatalog.as_view(packages=['django.contrib.admin'])(request)
@never_cache
def logout(self, request, extra_context=None):
"""
Log out the user for the given HttpRequest.
This should *not* assume the user is already logged in.
"""
from django.contrib.auth.views import LogoutView
defaults = {
'extra_context': {
**self.each_context(request),
# Since the user isn't logged out at this point, the value of
# has_permission must be overridden.
'has_permission': False,
**(extra_context or {})
},
}
if self.logout_template is not None:
defaults['template_name'] = self.logout_template
request.current_app = self.name
return LogoutView.as_view(**defaults)(request)
@never_cache
def login(self, request, extra_context=None):
"""
Display the login form for the given HttpRequest.
"""
if request.method == 'GET' and self.has_permission(request):
# Already logged-in, redirect to admin index
index_path = reverse('admin:index', current_app=self.name)
return HttpResponseRedirect(index_path)
from django.contrib.auth.views import LoginView
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level,
# and django.contrib.admin.forms eventually imports User.
from django.contrib.admin.forms import AdminAuthenticationForm
context = {
**self.each_context(request),
'title': _('Log in'),
'app_path': request.get_full_path(),
'username': request.user.get_username(),
}
if (REDIRECT_FIELD_NAME not in request.GET and
REDIRECT_FIELD_NAME not in request.POST):
context[REDIRECT_FIELD_NAME] = reverse('admin:index', current_app=self.name)
context.update(extra_context or {})
defaults = {
'extra_context': context,
'authentication_form': self.login_form or AdminAuthenticationForm,
'template_name': self.login_template or 'admin/login.html',
}
request.current_app = self.name
return LoginView.as_view(**defaults)(request)
def _build_app_dict(self, request, label=None):
"""
Build the app dictionary. The optional `label` parameter filters models
of a specific app.
"""
app_dict = {}
if label:
models = {
m: m_a for m, m_a in self._registry.items()
if m._meta.app_label == label
}
else:
models = self._registry
for model, model_admin in models.items():
app_label = model._meta.app_label
has_module_perms = model_admin.has_module_permission(request)
if not has_module_perms:
continue
perms = model_admin.get_model_perms(request)
# Check whether user has any perm for this module.
# If so, add the module to the model_list.
if True not in perms.values():
continue
info = (app_label, model._meta.model_name)
model_dict = {
'name': capfirst(model._meta.verbose_name_plural),
'object_name': model._meta.object_name,
'perms': perms,
'admin_url': None,
'add_url': None,
}
if perms.get('change') or perms.get('view'):
model_dict['view_only'] = not perms.get('change')
try:
model_dict['admin_url'] = reverse('admin:%s_%s_changelist' % info, current_app=self.name)
except NoReverseMatch:
pass
if perms.get('add'):
try:
model_dict['add_url'] = reverse('admin:%s_%s_add' % info, current_app=self.name)
except NoReverseMatch:
pass
if app_label in app_dict:
app_dict[app_label]['models'].append(model_dict)
else:
app_dict[app_label] = {
'name': apps.get_app_config(app_label).verbose_name,
'app_label': app_label,
'app_url': reverse(
'admin:app_list',
kwargs={'app_label': app_label},
current_app=self.name,
),
'has_module_perms': has_module_perms,
'models': [model_dict],
}
if label:
return app_dict.get(label)
return app_dict
def get_app_list(self, request):
"""
Return a sorted list of all the installed apps that have been
registered in this site.
"""
app_dict = self._build_app_dict(request)
# Sort the apps alphabetically.
app_list = sorted(app_dict.values(), key=lambda x: x['name'].lower())
# Sort the models alphabetically within each app.
for app in app_list:
app['models'].sort(key=lambda x: x['name'])
return app_list
@never_cache
def index(self, request, extra_context=None):
"""
Display the main admin index page, which lists all of the installed
apps that have been registered in this site.
"""
app_list = self.get_app_list(request)
context = {
**self.each_context(request),
'title': self.index_title,
'app_list': app_list,
**(extra_context or {}),
}
request.current_app = self.name
return TemplateResponse(request, self.index_template or 'admin/index.html', context)
def app_index(self, request, app_label, extra_context=None):
app_dict = self._build_app_dict(request, app_label)
if not app_dict:
raise Http404('The requested admin page does not exist.')
# Sort the models alphabetically within each app.
app_dict['models'].sort(key=lambda x: x['name'])
app_name = apps.get_app_config(app_label).verbose_name
context = {
**self.each_context(request),
'title': _('%(app)s administration') % {'app': app_name},
'app_list': [app_dict],
'app_label': app_label,
**(extra_context or {}),
}
request.current_app = self.name
return TemplateResponse(request, self.app_index_template or [
'admin/%s/app_index.html' % app_label,
'admin/app_index.html'
], context)
class DefaultAdminSite(LazyObject):
def _setup(self):
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
self._wrapped = AdminSiteClass()
# This global object represents the default admin site, for the common case.
# You can provide your own AdminSite using the (Simple)AdminConfig.default_site
# attribute. You can also instantiate AdminSite in your own code to create a
# custom admin site.
site = DefaultAdminSite()
|
ca39226d322bbf198757b100041238c00dcd6f60a1229360252413a3128da5dc | """
Form Widget classes specific to the Django admin site.
"""
import copy
import json
from django import forms
from django.conf import settings
from django.core.exceptions import ValidationError
from django.core.validators import URLValidator
from django.db.models.deletion import CASCADE
from django.urls import reverse
from django.urls.exceptions import NoReverseMatch
from django.utils.html import smart_urlquote
from django.utils.safestring import mark_safe
from django.utils.text import Truncator
from django.utils.translation import get_language, gettext as _
class FilteredSelectMultiple(forms.SelectMultiple):
"""
A SelectMultiple with a JavaScript filter interface.
Note that the resulting JavaScript assumes that the jsi18n
catalog has been loaded in the page
"""
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
js = [
'vendor/jquery/jquery%s.js' % extra,
'jquery.init.js',
'core.js',
'SelectBox.js',
'SelectFilter2.js',
]
return forms.Media(js=["admin/js/%s" % path for path in js])
def __init__(self, verbose_name, is_stacked, attrs=None, choices=()):
self.verbose_name = verbose_name
self.is_stacked = is_stacked
super().__init__(attrs, choices)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['widget']['attrs']['class'] = 'selectfilter'
if self.is_stacked:
context['widget']['attrs']['class'] += 'stacked'
context['widget']['attrs']['data-field-name'] = self.verbose_name
context['widget']['attrs']['data-is-stacked'] = int(self.is_stacked)
return context
class AdminDateWidget(forms.DateInput):
class Media:
js = [
'admin/js/calendar.js',
'admin/js/admin/DateTimeShortcuts.js',
]
def __init__(self, attrs=None, format=None):
attrs = {'class': 'vDateField', 'size': '10', **(attrs or {})}
super().__init__(attrs=attrs, format=format)
class AdminTimeWidget(forms.TimeInput):
class Media:
js = [
'admin/js/calendar.js',
'admin/js/admin/DateTimeShortcuts.js',
]
def __init__(self, attrs=None, format=None):
attrs = {'class': 'vTimeField', 'size': '8', **(attrs or {})}
super().__init__(attrs=attrs, format=format)
class AdminSplitDateTime(forms.SplitDateTimeWidget):
"""
A SplitDateTime Widget that has some admin-specific styling.
"""
template_name = 'admin/widgets/split_datetime.html'
def __init__(self, attrs=None):
widgets = [AdminDateWidget, AdminTimeWidget]
# Note that we're calling MultiWidget, not SplitDateTimeWidget, because
# we want to define widgets.
forms.MultiWidget.__init__(self, widgets, attrs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['date_label'] = _('Date:')
context['time_label'] = _('Time:')
return context
class AdminRadioSelect(forms.RadioSelect):
template_name = 'admin/widgets/radio.html'
class AdminFileWidget(forms.ClearableFileInput):
template_name = 'admin/widgets/clearable_file_input.html'
def url_params_from_lookup_dict(lookups):
"""
Convert the type of lookups specified in a ForeignKey limit_choices_to
attribute to a dictionary of query parameters
"""
params = {}
if lookups and hasattr(lookups, 'items'):
for k, v in lookups.items():
if callable(v):
v = v()
if isinstance(v, (tuple, list)):
v = ','.join(str(x) for x in v)
elif isinstance(v, bool):
v = ('0', '1')[v]
else:
v = str(v)
params[k] = v
return params
class ForeignKeyRawIdWidget(forms.TextInput):
"""
A Widget for displaying ForeignKeys in the "raw_id" interface rather than
in a <select> box.
"""
template_name = 'admin/widgets/foreign_key_raw_id.html'
def __init__(self, rel, admin_site, attrs=None, using=None):
self.rel = rel
self.admin_site = admin_site
self.db = using
super().__init__(attrs)
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
rel_to = self.rel.model
if rel_to in self.admin_site._registry:
# The related object is registered with the same AdminSite
related_url = reverse(
'admin:%s_%s_changelist' % (
rel_to._meta.app_label,
rel_to._meta.model_name,
),
current_app=self.admin_site.name,
)
params = self.url_parameters()
if params:
related_url += '?' + '&'.join('%s=%s' % (k, v) for k, v in params.items())
context['related_url'] = mark_safe(related_url)
context['link_title'] = _('Lookup')
# The JavaScript code looks for this class.
context['widget']['attrs'].setdefault('class', 'vForeignKeyRawIdAdminField')
else:
context['related_url'] = None
if context['widget']['value']:
context['link_label'], context['link_url'] = self.label_and_url_for_value(value)
else:
context['link_label'] = None
return context
def base_url_parameters(self):
limit_choices_to = self.rel.limit_choices_to
if callable(limit_choices_to):
limit_choices_to = limit_choices_to()
return url_params_from_lookup_dict(limit_choices_to)
def url_parameters(self):
from django.contrib.admin.views.main import TO_FIELD_VAR
params = self.base_url_parameters()
params.update({TO_FIELD_VAR: self.rel.get_related_field().name})
return params
def label_and_url_for_value(self, value):
key = self.rel.get_related_field().name
try:
obj = self.rel.model._default_manager.using(self.db).get(**{key: value})
except (ValueError, self.rel.model.DoesNotExist, ValidationError):
return '', ''
try:
url = reverse(
'%s:%s_%s_change' % (
self.admin_site.name,
obj._meta.app_label,
obj._meta.object_name.lower(),
),
args=(obj.pk,)
)
except NoReverseMatch:
url = '' # Admin not registered for target model.
return Truncator(obj).words(14), url
class ManyToManyRawIdWidget(ForeignKeyRawIdWidget):
"""
A Widget for displaying ManyToMany ids in the "raw_id" interface rather than
in a <select multiple> box.
"""
template_name = 'admin/widgets/many_to_many_raw_id.html'
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
if self.rel.model in self.admin_site._registry:
# The related object is registered with the same AdminSite
context['widget']['attrs']['class'] = 'vManyToManyRawIdAdminField'
return context
def url_parameters(self):
return self.base_url_parameters()
def label_and_url_for_value(self, value):
return '', ''
def value_from_datadict(self, data, files, name):
value = data.get(name)
if value:
return value.split(',')
def format_value(self, value):
return ','.join(str(v) for v in value) if value else ''
class RelatedFieldWidgetWrapper(forms.Widget):
"""
This class is a wrapper to a given widget to add the add icon for the
admin interface.
"""
template_name = 'admin/widgets/related_widget_wrapper.html'
def __init__(self, widget, rel, admin_site, can_add_related=None,
can_change_related=False, can_delete_related=False,
can_view_related=False):
self.needs_multipart_form = widget.needs_multipart_form
self.attrs = widget.attrs
self.choices = widget.choices
self.widget = widget
self.rel = rel
# Backwards compatible check for whether a user can add related
# objects.
if can_add_related is None:
can_add_related = rel.model in admin_site._registry
self.can_add_related = can_add_related
# XXX: The UX does not support multiple selected values.
multiple = getattr(widget, 'allow_multiple_selected', False)
self.can_change_related = not multiple and can_change_related
# XXX: The deletion UX can be confusing when dealing with cascading deletion.
cascade = getattr(rel, 'on_delete', None) is CASCADE
self.can_delete_related = not multiple and not cascade and can_delete_related
self.can_view_related = not multiple and can_view_related
# so we can check if the related object is registered with this AdminSite
self.admin_site = admin_site
def __deepcopy__(self, memo):
obj = copy.copy(self)
obj.widget = copy.deepcopy(self.widget, memo)
obj.attrs = self.widget.attrs
memo[id(self)] = obj
return obj
@property
def is_hidden(self):
return self.widget.is_hidden
@property
def media(self):
return self.widget.media
def get_related_url(self, info, action, *args):
return reverse("admin:%s_%s_%s" % (info + (action,)),
current_app=self.admin_site.name, args=args)
def get_context(self, name, value, attrs):
from django.contrib.admin.views.main import IS_POPUP_VAR, TO_FIELD_VAR
rel_opts = self.rel.model._meta
info = (rel_opts.app_label, rel_opts.model_name)
self.widget.choices = self.choices
url_params = '&'.join("%s=%s" % param for param in [
(TO_FIELD_VAR, self.rel.get_related_field().name),
(IS_POPUP_VAR, 1),
])
context = {
'rendered_widget': self.widget.render(name, value, attrs),
'is_hidden': self.is_hidden,
'name': name,
'url_params': url_params,
'model': rel_opts.verbose_name,
'can_add_related': self.can_add_related,
'can_change_related': self.can_change_related,
'can_delete_related': self.can_delete_related,
'can_view_related': self.can_view_related,
}
if self.can_add_related:
context['add_related_url'] = self.get_related_url(info, 'add')
if self.can_delete_related:
context['delete_related_template_url'] = self.get_related_url(info, 'delete', '__fk__')
if self.can_view_related or self.can_change_related:
context['change_related_template_url'] = self.get_related_url(info, 'change', '__fk__')
return context
def value_from_datadict(self, data, files, name):
return self.widget.value_from_datadict(data, files, name)
def value_omitted_from_data(self, data, files, name):
return self.widget.value_omitted_from_data(data, files, name)
def id_for_label(self, id_):
return self.widget.id_for_label(id_)
class AdminTextareaWidget(forms.Textarea):
def __init__(self, attrs=None):
super().__init__(attrs={'class': 'vLargeTextField', **(attrs or {})})
class AdminTextInputWidget(forms.TextInput):
def __init__(self, attrs=None):
super().__init__(attrs={'class': 'vTextField', **(attrs or {})})
class AdminEmailInputWidget(forms.EmailInput):
def __init__(self, attrs=None):
super().__init__(attrs={'class': 'vTextField', **(attrs or {})})
class AdminURLFieldWidget(forms.URLInput):
template_name = 'admin/widgets/url.html'
def __init__(self, attrs=None, validator_class=URLValidator):
super().__init__(attrs={'class': 'vURLField', **(attrs or {})})
self.validator = validator_class()
def get_context(self, name, value, attrs):
try:
self.validator(value if value else '')
url_valid = True
except ValidationError:
url_valid = False
context = super().get_context(name, value, attrs)
context['current_label'] = _('Currently:')
context['change_label'] = _('Change:')
context['widget']['href'] = smart_urlquote(context['widget']['value']) if value else ''
context['url_valid'] = url_valid
return context
class AdminIntegerFieldWidget(forms.NumberInput):
class_name = 'vIntegerField'
def __init__(self, attrs=None):
super().__init__(attrs={'class': self.class_name, **(attrs or {})})
class AdminBigIntegerFieldWidget(AdminIntegerFieldWidget):
class_name = 'vBigIntegerField'
class AdminUUIDInputWidget(forms.TextInput):
def __init__(self, attrs=None):
super().__init__(attrs={'class': 'vUUIDField', **(attrs or {})})
# Mapping of lowercase language codes [returned by Django's get_language()] to
# language codes supported by select2.
# See django/contrib/admin/static/admin/js/vendor/select2/i18n/*
SELECT2_TRANSLATIONS = {x.lower(): x for x in [
'ar', 'az', 'bg', 'ca', 'cs', 'da', 'de', 'el', 'en', 'es', 'et',
'eu', 'fa', 'fi', 'fr', 'gl', 'he', 'hi', 'hr', 'hu', 'id', 'is',
'it', 'ja', 'km', 'ko', 'lt', 'lv', 'mk', 'ms', 'nb', 'nl', 'pl',
'pt-BR', 'pt', 'ro', 'ru', 'sk', 'sr-Cyrl', 'sr', 'sv', 'th',
'tr', 'uk', 'vi',
]}
SELECT2_TRANSLATIONS.update({'zh-hans': 'zh-CN', 'zh-hant': 'zh-TW'})
class AutocompleteMixin:
"""
Select widget mixin that loads options from AutocompleteJsonView via AJAX.
Renders the necessary data attributes for select2 and adds the static form
media.
"""
url_name = '%s:%s_%s_autocomplete'
def __init__(self, rel, admin_site, attrs=None, choices=(), using=None):
self.rel = rel
self.admin_site = admin_site
self.db = using
self.choices = choices
self.attrs = {} if attrs is None else attrs.copy()
def get_url(self):
model = self.rel.model
return reverse(self.url_name % (self.admin_site.name, model._meta.app_label, model._meta.model_name))
def build_attrs(self, base_attrs, extra_attrs=None):
"""
Set select2's AJAX attributes.
Attributes can be set using the html5 data attribute.
Nested attributes require a double dash as per
https://select2.org/configuration/data-attributes#nested-subkey-options
"""
attrs = super().build_attrs(base_attrs, extra_attrs=extra_attrs)
attrs.setdefault('class', '')
attrs.update({
'data-ajax--cache': 'true',
'data-ajax--type': 'GET',
'data-ajax--url': self.get_url(),
'data-theme': 'admin-autocomplete',
'data-allow-clear': json.dumps(not self.is_required),
'data-placeholder': '', # Allows clearing of the input.
'class': attrs['class'] + (' ' if attrs['class'] else '') + 'admin-autocomplete',
})
return attrs
def optgroups(self, name, value, attr=None):
"""Return selected options based on the ModelChoiceIterator."""
default = (None, [], 0)
groups = [default]
has_selected = False
selected_choices = {
str(v) for v in value
if str(v) not in self.choices.field.empty_values
}
if not self.is_required and not self.allow_multiple_selected:
default[1].append(self.create_option(name, '', '', False, 0))
choices = (
(obj.pk, self.choices.field.label_from_instance(obj))
for obj in self.choices.queryset.using(self.db).filter(pk__in=selected_choices)
)
for option_value, option_label in choices:
selected = (
str(option_value) in value and
(has_selected is False or self.allow_multiple_selected)
)
has_selected |= selected
index = len(default[1])
subgroup = default[1]
subgroup.append(self.create_option(name, option_value, option_label, selected_choices, index))
return groups
@property
def media(self):
extra = '' if settings.DEBUG else '.min'
i18n_name = SELECT2_TRANSLATIONS.get(get_language())
i18n_file = ('admin/js/vendor/select2/i18n/%s.js' % i18n_name,) if i18n_name else ()
return forms.Media(
js=(
'admin/js/vendor/jquery/jquery%s.js' % extra,
'admin/js/vendor/select2/select2.full%s.js' % extra,
) + i18n_file + (
'admin/js/jquery.init.js',
'admin/js/autocomplete.js',
),
css={
'screen': (
'admin/css/vendor/select2/select2%s.css' % extra,
'admin/css/autocomplete.css',
),
},
)
class AutocompleteSelect(AutocompleteMixin, forms.Select):
pass
class AutocompleteSelectMultiple(AutocompleteMixin, forms.SelectMultiple):
pass
|
e9761bc3f351d40785c25b707754952990d56b8e6c98120df9eec4d0c4f7ed4f | import datetime
import decimal
import re
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.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 = 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_needs_distinct(opts, lookup_path):
"""
Return True if 'distinct()' should be used to query the given lookup path.
"""
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, 'get_path_info'):
# This field is a relation; update opts to follow the relation.
path_info = field.get_path_info()
opts = path_info[-1].to_opts
if any(path.m2m for path in path_info):
# This field is a m2m relation so distinct must be called.
return True
return False
def prepare_lookup_value(key, value):
"""
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(',')
# 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.group(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)
def related_objects(self, related, objs):
qs = super().related_objects(related, objs)
return qs.select_related(related.field.name)
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)
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, 'get_path_info'):
return field.get_path_info()[-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
|
ef31c21be3a0f1b4f2861de7779706f0a4ebcc751de21344719759a685b561ed | """
This encapsulates the logic for displaying filters in the Django admin.
Filters are specified in models with the "list_filter" option.
Each filter subclass knows how to display a filter for a field that passes a
certain test -- e.g. being a DateField or ForeignKey.
"""
import datetime
from django.contrib.admin.options import IncorrectLookupParameters
from django.contrib.admin.utils import (
get_model_from_relation, prepare_lookup_value, reverse_field_path,
)
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.db import models
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
class ListFilter:
title = None # Human-readable title to appear in the right sidebar.
template = 'admin/filter.html'
def __init__(self, request, params, model, model_admin):
# This dictionary will eventually contain the request's query string
# parameters actually used by this filter.
self.used_parameters = {}
if self.title is None:
raise ImproperlyConfigured(
"The list filter '%s' does not specify a 'title'."
% self.__class__.__name__
)
def has_output(self):
"""
Return True if some choices would be output for this filter.
"""
raise NotImplementedError('subclasses of ListFilter must provide a has_output() method')
def choices(self, changelist):
"""
Return choices ready to be output in the template.
`changelist` is the ChangeList to be displayed.
"""
raise NotImplementedError('subclasses of ListFilter must provide a choices() method')
def queryset(self, request, queryset):
"""
Return the filtered queryset.
"""
raise NotImplementedError('subclasses of ListFilter must provide a queryset() method')
def expected_parameters(self):
"""
Return the list of parameter names that are expected from the
request's query string and that will be used by this filter.
"""
raise NotImplementedError('subclasses of ListFilter must provide an expected_parameters() method')
class SimpleListFilter(ListFilter):
# The parameter that should be used in the query string for that filter.
parameter_name = None
def __init__(self, request, params, model, model_admin):
super().__init__(request, params, model, model_admin)
if self.parameter_name is None:
raise ImproperlyConfigured(
"The list filter '%s' does not specify a 'parameter_name'."
% self.__class__.__name__
)
if self.parameter_name in params:
value = params.pop(self.parameter_name)
self.used_parameters[self.parameter_name] = value
lookup_choices = self.lookups(request, model_admin)
if lookup_choices is None:
lookup_choices = ()
self.lookup_choices = list(lookup_choices)
def has_output(self):
return len(self.lookup_choices) > 0
def value(self):
"""
Return the value (in string format) provided in the request's
query string for this filter, if any, or None if the value wasn't
provided.
"""
return self.used_parameters.get(self.parameter_name)
def lookups(self, request, model_admin):
"""
Must be overridden to return a list of tuples (value, verbose value)
"""
raise NotImplementedError(
'The SimpleListFilter.lookups() method must be overridden to '
'return a list of tuples (value, verbose value).'
)
def expected_parameters(self):
return [self.parameter_name]
def choices(self, changelist):
yield {
'selected': self.value() is None,
'query_string': changelist.get_query_string(remove=[self.parameter_name]),
'display': _('All'),
}
for lookup, title in self.lookup_choices:
yield {
'selected': self.value() == str(lookup),
'query_string': changelist.get_query_string({self.parameter_name: lookup}),
'display': title,
}
class FieldListFilter(ListFilter):
_field_list_filters = []
_take_priority_index = 0
def __init__(self, field, request, params, model, model_admin, field_path):
self.field = field
self.field_path = field_path
self.title = getattr(field, 'verbose_name', field_path)
super().__init__(request, params, model, model_admin)
for p in self.expected_parameters():
if p in params:
value = params.pop(p)
self.used_parameters[p] = prepare_lookup_value(p, value)
def has_output(self):
return True
def queryset(self, request, queryset):
try:
return queryset.filter(**self.used_parameters)
except (ValueError, ValidationError) as e:
# Fields may raise a ValueError or ValidationError when converting
# the parameters to the correct type.
raise IncorrectLookupParameters(e)
@classmethod
def register(cls, test, list_filter_class, take_priority=False):
if take_priority:
# This is to allow overriding the default filters for certain types
# of fields with some custom filters. The first found in the list
# is used in priority.
cls._field_list_filters.insert(
cls._take_priority_index, (test, list_filter_class))
cls._take_priority_index += 1
else:
cls._field_list_filters.append((test, list_filter_class))
@classmethod
def create(cls, field, request, params, model, model_admin, field_path):
for test, list_filter_class in cls._field_list_filters:
if test(field):
return list_filter_class(field, request, params, model, model_admin, field_path=field_path)
class RelatedFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
other_model = get_model_from_relation(field)
self.lookup_kwarg = '%s__%s__exact' % (field_path, field.target_field.name)
self.lookup_kwarg_isnull = '%s__isnull' % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = params.get(self.lookup_kwarg_isnull)
super().__init__(field, request, params, model, model_admin, field_path)
self.lookup_choices = self.field_choices(field, request, model_admin)
if hasattr(field, 'verbose_name'):
self.lookup_title = field.verbose_name
else:
self.lookup_title = other_model._meta.verbose_name
self.title = self.lookup_title
self.empty_value_display = model_admin.get_empty_value_display()
@property
def include_empty_choice(self):
"""
Return True if a "(None)" choice should be included, which filters
out everything except empty relationships.
"""
return self.field.null or (self.field.is_relation and self.field.many_to_many)
def has_output(self):
if self.include_empty_choice:
extra = 1
else:
extra = 0
return len(self.lookup_choices) + extra > 1
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def field_choices(self, field, request, model_admin):
ordering = ()
related_admin = model_admin.admin_site._registry.get(field.remote_field.model)
if related_admin is not None:
ordering = related_admin.get_ordering(request)
return field.get_choices(include_blank=False, ordering=ordering)
def choices(self, changelist):
yield {
'selected': self.lookup_val is None and not self.lookup_val_isnull,
'query_string': changelist.get_query_string(remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]),
'display': _('All'),
}
for pk_val, val in self.lookup_choices:
yield {
'selected': self.lookup_val == str(pk_val),
'query_string': changelist.get_query_string({self.lookup_kwarg: pk_val}, [self.lookup_kwarg_isnull]),
'display': val,
}
if self.include_empty_choice:
yield {
'selected': bool(self.lookup_val_isnull),
'query_string': changelist.get_query_string({self.lookup_kwarg_isnull: 'True'}, [self.lookup_kwarg]),
'display': self.empty_value_display,
}
FieldListFilter.register(lambda f: f.remote_field, RelatedFieldListFilter)
class BooleanFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = '%s__exact' % field_path
self.lookup_kwarg2 = '%s__isnull' % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val2 = params.get(self.lookup_kwarg2)
super().__init__(field, request, params, model, model_admin, field_path)
if (self.used_parameters and self.lookup_kwarg in self.used_parameters and
self.used_parameters[self.lookup_kwarg] in ('1', '0')):
self.used_parameters[self.lookup_kwarg] = bool(int(self.used_parameters[self.lookup_kwarg]))
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg2]
def choices(self, changelist):
for lookup, title in (
(None, _('All')),
('1', _('Yes')),
('0', _('No'))):
yield {
'selected': self.lookup_val == lookup and not self.lookup_val2,
'query_string': changelist.get_query_string({self.lookup_kwarg: lookup}, [self.lookup_kwarg2]),
'display': title,
}
if self.field.null:
yield {
'selected': self.lookup_val2 == 'True',
'query_string': changelist.get_query_string({self.lookup_kwarg2: 'True'}, [self.lookup_kwarg]),
'display': _('Unknown'),
}
FieldListFilter.register(lambda f: isinstance(f, models.BooleanField), BooleanFieldListFilter)
class ChoicesFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = '%s__exact' % field_path
self.lookup_kwarg_isnull = '%s__isnull' % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = params.get(self.lookup_kwarg_isnull)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def choices(self, changelist):
yield {
'selected': self.lookup_val is None,
'query_string': changelist.get_query_string(remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]),
'display': _('All')
}
none_title = ''
for lookup, title in self.field.flatchoices:
if lookup is None:
none_title = title
continue
yield {
'selected': str(lookup) == self.lookup_val,
'query_string': changelist.get_query_string({self.lookup_kwarg: lookup}, [self.lookup_kwarg_isnull]),
'display': title,
}
if none_title:
yield {
'selected': bool(self.lookup_val_isnull),
'query_string': changelist.get_query_string({self.lookup_kwarg_isnull: 'True'}, [self.lookup_kwarg]),
'display': none_title,
}
FieldListFilter.register(lambda f: bool(f.choices), ChoicesFieldListFilter)
class DateFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.field_generic = '%s__' % field_path
self.date_params = {k: v for k, v in params.items() if k.startswith(self.field_generic)}
now = timezone.now()
# When time zone support is enabled, convert "now" to the user's time
# zone so Django's definition of "Today" matches what the user expects.
if timezone.is_aware(now):
now = timezone.localtime(now)
if isinstance(field, models.DateTimeField):
today = now.replace(hour=0, minute=0, second=0, microsecond=0)
else: # field is a models.DateField
today = now.date()
tomorrow = today + datetime.timedelta(days=1)
if today.month == 12:
next_month = today.replace(year=today.year + 1, month=1, day=1)
else:
next_month = today.replace(month=today.month + 1, day=1)
next_year = today.replace(year=today.year + 1, month=1, day=1)
self.lookup_kwarg_since = '%s__gte' % field_path
self.lookup_kwarg_until = '%s__lt' % field_path
self.links = (
(_('Any date'), {}),
(_('Today'), {
self.lookup_kwarg_since: str(today),
self.lookup_kwarg_until: str(tomorrow),
}),
(_('Past 7 days'), {
self.lookup_kwarg_since: str(today - datetime.timedelta(days=7)),
self.lookup_kwarg_until: str(tomorrow),
}),
(_('This month'), {
self.lookup_kwarg_since: str(today.replace(day=1)),
self.lookup_kwarg_until: str(next_month),
}),
(_('This year'), {
self.lookup_kwarg_since: str(today.replace(month=1, day=1)),
self.lookup_kwarg_until: str(next_year),
}),
)
if field.null:
self.lookup_kwarg_isnull = '%s__isnull' % field_path
self.links += (
(_('No date'), {self.field_generic + 'isnull': 'True'}),
(_('Has date'), {self.field_generic + 'isnull': 'False'}),
)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
params = [self.lookup_kwarg_since, self.lookup_kwarg_until]
if self.field.null:
params.append(self.lookup_kwarg_isnull)
return params
def choices(self, changelist):
for title, param_dict in self.links:
yield {
'selected': self.date_params == param_dict,
'query_string': changelist.get_query_string(param_dict, [self.field_generic]),
'display': title,
}
FieldListFilter.register(
lambda f: isinstance(f, models.DateField), DateFieldListFilter)
# This should be registered last, because it's a last resort. For example,
# if a field is eligible to use the BooleanFieldListFilter, that'd be much
# more appropriate, and the AllValuesFieldListFilter won't get used for it.
class AllValuesFieldListFilter(FieldListFilter):
def __init__(self, field, request, params, model, model_admin, field_path):
self.lookup_kwarg = field_path
self.lookup_kwarg_isnull = '%s__isnull' % field_path
self.lookup_val = params.get(self.lookup_kwarg)
self.lookup_val_isnull = params.get(self.lookup_kwarg_isnull)
self.empty_value_display = model_admin.get_empty_value_display()
parent_model, reverse_path = reverse_field_path(model, field_path)
# Obey parent ModelAdmin queryset when deciding which options to show
if model == parent_model:
queryset = model_admin.get_queryset(request)
else:
queryset = parent_model._default_manager.all()
self.lookup_choices = queryset.distinct().order_by(field.name).values_list(field.name, flat=True)
super().__init__(field, request, params, model, model_admin, field_path)
def expected_parameters(self):
return [self.lookup_kwarg, self.lookup_kwarg_isnull]
def choices(self, changelist):
yield {
'selected': self.lookup_val is None and self.lookup_val_isnull is None,
'query_string': changelist.get_query_string(remove=[self.lookup_kwarg, self.lookup_kwarg_isnull]),
'display': _('All'),
}
include_none = False
for val in self.lookup_choices:
if val is None:
include_none = True
continue
val = str(val)
yield {
'selected': self.lookup_val == val,
'query_string': changelist.get_query_string({self.lookup_kwarg: val}, [self.lookup_kwarg_isnull]),
'display': val,
}
if include_none:
yield {
'selected': bool(self.lookup_val_isnull),
'query_string': changelist.get_query_string({self.lookup_kwarg_isnull: 'True'}, [self.lookup_kwarg]),
'display': self.empty_value_display,
}
FieldListFilter.register(lambda f: True, AllValuesFieldListFilter)
class RelatedOnlyFieldListFilter(RelatedFieldListFilter):
def field_choices(self, field, request, model_admin):
pk_qs = model_admin.get_queryset(request).distinct().values_list('%s__pk' % self.field_path, flat=True)
return field.get_choices(include_blank=False, limit_choices_to={'pk__in': pk_qs})
|
7cf698e9c1d4fee4c8614a1593cea362dfd22beb1b27320722f503700936a15f | import functools
import os
from django.apps import apps
from django.conf import settings
from django.contrib.staticfiles import utils
from django.core.checks import Error
from django.core.exceptions import ImproperlyConfigured
from django.core.files.storage import (
FileSystemStorage, Storage, default_storage,
)
from django.utils._os import safe_join
from django.utils.functional import LazyObject, empty
from django.utils.module_loading import import_string
# To keep track on which directories the finder has searched the static files.
searched_locations = []
class BaseFinder:
"""
A base file finder to be used for custom staticfiles finder classes.
"""
def check(self, **kwargs):
raise NotImplementedError(
'subclasses may provide a check() method to verify the finder is '
'configured correctly.'
)
def find(self, path, all=False):
"""
Given a relative file path, find an absolute file path.
If the ``all`` parameter is False (default) return only the first found
file path; if True, return a list of all found files paths.
"""
raise NotImplementedError('subclasses of BaseFinder must provide a find() method')
def list(self, ignore_patterns):
"""
Given an optional list of paths to ignore, return a two item iterable
consisting of the relative path and storage instance.
"""
raise NotImplementedError('subclasses of BaseFinder must provide a list() method')
class FileSystemFinder(BaseFinder):
"""
A static files finder that uses the ``STATICFILES_DIRS`` setting
to locate files.
"""
def __init__(self, app_names=None, *args, **kwargs):
# List of locations with static files
self.locations = []
# Maps dir paths to an appropriate storage instance
self.storages = {}
for root in settings.STATICFILES_DIRS:
if isinstance(root, (list, tuple)):
prefix, root = root
else:
prefix = ''
if (prefix, root) not in self.locations:
self.locations.append((prefix, root))
for prefix, root in self.locations:
filesystem_storage = FileSystemStorage(location=root)
filesystem_storage.prefix = prefix
self.storages[root] = filesystem_storage
super().__init__(*args, **kwargs)
def check(self, **kwargs):
errors = []
if not isinstance(settings.STATICFILES_DIRS, (list, tuple)):
errors.append(Error(
'The STATICFILES_DIRS setting is not a tuple or list.',
hint='Perhaps you forgot a trailing comma?',
id='staticfiles.E001',
))
for root in settings.STATICFILES_DIRS:
if isinstance(root, (list, tuple)):
prefix, root = root
if prefix.endswith('/'):
errors.append(Error(
'The prefix %r in the STATICFILES_DIRS setting must '
'not end with a slash.' % prefix,
id='staticfiles.E003',
))
if settings.STATIC_ROOT and os.path.abspath(settings.STATIC_ROOT) == os.path.abspath(root):
errors.append(Error(
'The STATICFILES_DIRS setting should not contain the '
'STATIC_ROOT setting.',
id='staticfiles.E002',
))
return errors
def find(self, path, all=False):
"""
Look for files in the extra locations as defined in STATICFILES_DIRS.
"""
matches = []
for prefix, root in self.locations:
if root not in searched_locations:
searched_locations.append(root)
matched_path = self.find_location(root, path, prefix)
if matched_path:
if not all:
return matched_path
matches.append(matched_path)
return matches
def find_location(self, root, path, prefix=None):
"""
Find a requested static file in a location and return the found
absolute path (or ``None`` if no match).
"""
if prefix:
prefix = '%s%s' % (prefix, os.sep)
if not path.startswith(prefix):
return None
path = path[len(prefix):]
path = safe_join(root, path)
if os.path.exists(path):
return path
def list(self, ignore_patterns):
"""
List all files in all locations.
"""
for prefix, root in self.locations:
storage = self.storages[root]
for path in utils.get_files(storage, ignore_patterns):
yield path, storage
class AppDirectoriesFinder(BaseFinder):
"""
A static files finder that looks in the directory of each app as
specified in the source_dir attribute.
"""
storage_class = FileSystemStorage
source_dir = 'static'
def __init__(self, app_names=None, *args, **kwargs):
# The list of apps that are handled
self.apps = []
# Mapping of app names to storage instances
self.storages = {}
app_configs = apps.get_app_configs()
if app_names:
app_names = set(app_names)
app_configs = [ac for ac in app_configs if ac.name in app_names]
for app_config in app_configs:
app_storage = self.storage_class(
os.path.join(app_config.path, self.source_dir))
if os.path.isdir(app_storage.location):
self.storages[app_config.name] = app_storage
if app_config.name not in self.apps:
self.apps.append(app_config.name)
super().__init__(*args, **kwargs)
def list(self, ignore_patterns):
"""
List all files in all app storages.
"""
for storage in self.storages.values():
if storage.exists(''): # check if storage location exists
for path in utils.get_files(storage, ignore_patterns):
yield path, storage
def find(self, path, all=False):
"""
Look for files in the app directories.
"""
matches = []
for app in self.apps:
app_location = self.storages[app].location
if app_location not in searched_locations:
searched_locations.append(app_location)
match = self.find_in_app(app, path)
if match:
if not all:
return match
matches.append(match)
return matches
def find_in_app(self, app, path):
"""
Find a requested static file in an app's static locations.
"""
storage = self.storages.get(app)
if storage:
# only try to find a file if the source dir actually exists
if storage.exists(path):
matched_path = storage.path(path)
if matched_path:
return matched_path
class BaseStorageFinder(BaseFinder):
"""
A base static files finder to be used to extended
with an own storage class.
"""
storage = None
def __init__(self, storage=None, *args, **kwargs):
if storage is not None:
self.storage = storage
if self.storage is None:
raise ImproperlyConfigured("The staticfiles storage finder %r "
"doesn't have a storage class "
"assigned." % self.__class__)
# Make sure we have a storage instance here.
if not isinstance(self.storage, (Storage, LazyObject)):
self.storage = self.storage()
super().__init__(*args, **kwargs)
def find(self, path, all=False):
"""
Look for files in the default file storage, if it's local.
"""
try:
self.storage.path('')
except NotImplementedError:
pass
else:
if self.storage.location not in searched_locations:
searched_locations.append(self.storage.location)
if self.storage.exists(path):
match = self.storage.path(path)
if all:
match = [match]
return match
return []
def list(self, ignore_patterns):
"""
List all files of the storage.
"""
for path in utils.get_files(self.storage, ignore_patterns):
yield path, self.storage
class DefaultStorageFinder(BaseStorageFinder):
"""
A static files finder that uses the default storage backend.
"""
storage = default_storage
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
base_location = getattr(self.storage, 'base_location', empty)
if not base_location:
raise ImproperlyConfigured("The storage backend of the "
"staticfiles finder %r doesn't have "
"a valid location." % self.__class__)
def find(path, all=False):
"""
Find a static file with the given path using all enabled finders.
If ``all`` is ``False`` (default), return the first matching
absolute path (or ``None`` if no match). Otherwise return a list.
"""
searched_locations[:] = []
matches = []
for finder in get_finders():
result = finder.find(path, all=all)
if not all and result:
return result
if not isinstance(result, (list, tuple)):
result = [result]
matches.extend(result)
if matches:
return matches
# No match.
return [] if all else None
def get_finders():
for finder_path in settings.STATICFILES_FINDERS:
yield get_finder(finder_path)
@functools.lru_cache(maxsize=None)
def get_finder(import_path):
"""
Import the staticfiles finder class described by import_path, where
import_path is the full Python path to the class.
"""
Finder = import_string(import_path)
if not issubclass(Finder, BaseFinder):
raise ImproperlyConfigured('Finder "%s" is not a subclass of "%s"' %
(Finder, BaseFinder))
return Finder()
|
f4baa8f148aa5e96522b20dad8961cecb3a5c2d2482438ed92070a797ef44b6e | from urllib.parse import urlparse
from urllib.request import url2pathname
from django.conf import settings
from django.contrib.staticfiles import utils
from django.contrib.staticfiles.views import serve
from django.core.handlers.exception import response_for_exception
from django.core.handlers.wsgi import WSGIHandler, get_path_info
from django.http import Http404
class StaticFilesHandler(WSGIHandler):
"""
WSGI middleware that intercepts calls to the static files directory, as
defined by the STATIC_URL setting, and serves those files.
"""
# May be used to differentiate between handler types (e.g. in a
# request_finished signal)
handles_files = True
def __init__(self, application):
self.application = application
self.base_url = urlparse(self.get_base_url())
super().__init__()
def load_middleware(self):
# Middleware are already loaded for self.application; no need to reload
# them for self.
pass
def get_base_url(self):
utils.check_settings()
return settings.STATIC_URL
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 media file on disk for the given URL.
"""
relative_url = url[len(self.base_url[2]):]
return url2pathname(relative_url)
def serve(self, request):
"""Serve the request path."""
return serve(request, self.file_path(request.path), insecure=True)
def get_response(self, request):
try:
return self.serve(request)
except Http404 as e:
return response_for_exception(request, e)
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)
|
28b6b5f494b7286271c105e7e840d185d84e53e97c9f3924685d5288ee0b9a37 | import fnmatch
import os
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
def matches_patterns(path, patterns=None):
"""
Return True or False depending on whether the ``path`` should be
ignored (if it matches any pattern in ``ignore_patterns``).
"""
return any(fnmatch.fnmatchcase(path, pattern) for pattern in (patterns or []))
def get_files(storage, ignore_patterns=None, location=''):
"""
Recursively walk the storage directories yielding the paths
of all files that should be copied.
"""
if ignore_patterns is None:
ignore_patterns = []
directories, files = storage.listdir(location)
for fn in files:
# Match only the basename.
if matches_patterns(fn, ignore_patterns):
continue
if location:
fn = os.path.join(location, fn)
# Match the full file path.
if matches_patterns(fn, ignore_patterns):
continue
yield fn
for dir in directories:
if matches_patterns(dir, ignore_patterns):
continue
if location:
dir = os.path.join(location, dir)
yield from get_files(storage, ignore_patterns, dir)
def check_settings(base_url=None):
"""
Check if the staticfiles settings have sane values.
"""
if base_url is None:
base_url = settings.STATIC_URL
if not base_url:
raise ImproperlyConfigured(
"You're using the staticfiles app "
"without having set the required STATIC_URL setting.")
if settings.MEDIA_URL == base_url:
raise ImproperlyConfigured("The MEDIA_URL and STATIC_URL "
"settings must have different values")
if (settings.DEBUG and settings.MEDIA_URL and settings.STATIC_URL and
settings.MEDIA_URL.startswith(settings.STATIC_URL)):
raise ImproperlyConfigured(
"runserver can't serve media if MEDIA_URL is within STATIC_URL."
)
if ((settings.MEDIA_ROOT and settings.STATIC_ROOT) and
(settings.MEDIA_ROOT == settings.STATIC_ROOT)):
raise ImproperlyConfigured("The MEDIA_ROOT and STATIC_ROOT "
"settings must have different values")
|
e376c76131d53168f0794fedab35e904a129ec4b47aeeffbaf0af6c3b53e0199 | """
Views and functions for serving static files. These are only to be used during
development, and SHOULD NOT be used in a production setting.
"""
import os
import posixpath
from django.conf import settings
from django.contrib.staticfiles import finders
from django.http import Http404
from django.views import static
def serve(request, path, insecure=False, **kwargs):
"""
Serve static files below a given point in the directory structure or
from locations inferred from the staticfiles finders.
To use, put a URL pattern such as::
from django.contrib.staticfiles import views
path('<path:path>', views.serve)
in your URLconf.
It uses the django.views.static.serve() view to serve the found files.
"""
if not settings.DEBUG and not insecure:
raise Http404
normalized_path = posixpath.normpath(path).lstrip('/')
absolute_path = finders.find(normalized_path)
if not absolute_path:
if path.endswith('/') or path == '':
raise Http404("Directory indexes are not allowed here.")
raise Http404("'%s' could not be found" % path)
document_root, path = os.path.split(absolute_path)
return static.serve(request, path, document_root=document_root, **kwargs)
|
8840c08a5fdb2666f59fe3739cc8248b099a560af495b79871ead2906d0f73b6 | import hashlib
import json
import os
import posixpath
import re
import warnings
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.cache import (
InvalidCacheBackendError, cache as default_cache, caches,
)
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.deprecation import RemovedInDjango31Warning
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("%s")"""
max_post_process_passes = 5
patterns = (
("*.css", (
r"""(url\(['"]{0,1}\s*(.*?)["']{0,1}\))""",
(r"""(@import\s*["']\s*(.*?)["'])""", """@import 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
md5 = hashlib.md5()
for chunk in content.chunks():
md5.update(chunk)
return md5.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)
if file_hash is not None:
file_hash = ".%s" % file_hash
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.
"""
matched, url = matchobj.groups()
# 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
return template % unquote(transformed_url)
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)
]
# Do a single pass first. Post-process all files once, then repeat for
# adjustable files.
for name, hashed_name, processed, _ in self._post_process(paths, adjustable_paths, hashed_files):
yield name, hashed_name, processed
paths = {path: paths[path] for path in adjustable_paths}
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):
yield 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)
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(settings.FILE_CHARSET)
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, **kwargs):
super().__init__(*args, **kwargs)
self.hashed_files = self.load_manifest()
def read_manifest(self):
try:
with self.open(self.manifest_name) as manifest:
return manifest.read().decode()
except OSError:
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)
self.save_manifest()
def save_manifest(self):
payload = {'paths': self.hashed_files, 'version': self.manifest_version}
if self.exists(self.manifest_name):
self.delete(self.manifest_name)
contents = json.dumps(payload).encode()
self._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 _MappingCache:
"""
A small dict-like wrapper for a given cache backend instance.
"""
def __init__(self, cache):
self.cache = cache
def __setitem__(self, key, value):
self.cache.set(key, value)
def __getitem__(self, key):
value = self.cache.get(key)
if value is None:
raise KeyError("Couldn't find a file name '%s'" % key)
return value
def clear(self):
self.cache.clear()
def update(self, data):
self.cache.set_many(data)
def get(self, key, default=None):
try:
return self[key]
except KeyError:
return default
class CachedFilesMixin(HashedFilesMixin):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
try:
self.hashed_files = _MappingCache(caches['staticfiles'])
except InvalidCacheBackendError:
# Use the default backend
self.hashed_files = _MappingCache(default_cache)
def hash_key(self, name):
key = hashlib.md5(self.clean_name(name).encode()).hexdigest()
return 'staticfiles:%s' % key
class CachedStaticFilesStorage(CachedFilesMixin, StaticFilesStorage):
"""
A static file system storage backend which also saves
hashed copies of the files it saves.
"""
def __init__(self, *args, **kwargs):
warnings.warn(
'CachedStaticFilesStorage is deprecated in favor of '
'ManifestStaticFilesStorage.',
RemovedInDjango31Warning, stacklevel=2,
)
super().__init__(*args, **kwargs)
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()
|
873df5d03859bac12f2d4c4225722930c73f653c2e73e1d83cd1c3a3521d1d80 | from django import forms
from django.conf import settings
from django.contrib.flatpages.models import FlatPage
from django.utils.translation import gettext, gettext_lazy as _
class FlatpageForm(forms.ModelForm):
url = forms.RegexField(
label=_("URL"),
max_length=100,
regex=r'^[-\w/\.~]+$',
help_text=_("Example: '/about/contact/'. Make sure to have leading and trailing slashes."),
error_messages={
"invalid": _(
"This value must contain only letters, numbers, dots, "
"underscores, dashes, slashes or tildes."
),
},
)
class Meta:
model = FlatPage
fields = '__all__'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if not self._trailing_slash_required():
self.fields['url'].help_text = _(
"Example: '/about/contact'. Make sure to have a leading slash."
)
def _trailing_slash_required(self):
return (
settings.APPEND_SLASH and
'django.middleware.common.CommonMiddleware' in settings.MIDDLEWARE
)
def clean_url(self):
url = self.cleaned_data['url']
if not url.startswith('/'):
raise forms.ValidationError(
gettext("URL is missing a leading slash."),
code='missing_leading_slash',
)
if self._trailing_slash_required() and not url.endswith('/'):
raise forms.ValidationError(
gettext("URL is missing a trailing slash."),
code='missing_trailing_slash',
)
return url
def clean(self):
url = self.cleaned_data.get('url')
sites = self.cleaned_data.get('sites')
same_url = FlatPage.objects.filter(url=url)
if self.instance.pk:
same_url = same_url.exclude(pk=self.instance.pk)
if sites and same_url.filter(sites__in=sites).exists():
for site in sites:
if same_url.filter(sites=site).exists():
raise forms.ValidationError(
_('Flatpage with url %(url)s already exists for site %(site)s'),
code='duplicate_url',
params={'url': url, 'site': site},
)
return super().clean()
|
cb0903b991d9c2efe4671e9fae3005b7b3000779a8ebe98b89cc81cb0d7711f6 | from django.conf import settings
from django.contrib.flatpages.models import FlatPage
from django.contrib.sites.shortcuts import get_current_site
from django.http import Http404, HttpResponse, HttpResponsePermanentRedirect
from django.shortcuts import get_object_or_404
from django.template import loader
from django.utils.safestring import mark_safe
from django.views.decorators.csrf import csrf_protect
DEFAULT_TEMPLATE = 'flatpages/default.html'
# This view is called from FlatpageFallbackMiddleware.process_response
# when a 404 is raised, which often means CsrfViewMiddleware.process_view
# has not been called even if CsrfViewMiddleware is installed. So we need
# to use @csrf_protect, in case the template needs {% csrf_token %}.
# However, we can't just wrap this view; if no matching flatpage exists,
# or a redirect is required for authentication, the 404 needs to be returned
# without any CSRF checks. Therefore, we only
# CSRF protect the internal implementation.
def flatpage(request, url):
"""
Public interface to the flat page view.
Models: `flatpages.flatpages`
Templates: Uses the template defined by the ``template_name`` field,
or :template:`flatpages/default.html` if template_name is not defined.
Context:
flatpage
`flatpages.flatpages` object
"""
if not url.startswith('/'):
url = '/' + url
site_id = get_current_site(request).id
try:
f = get_object_or_404(FlatPage, url=url, sites=site_id)
except Http404:
if not url.endswith('/') and settings.APPEND_SLASH:
url += '/'
f = get_object_or_404(FlatPage, url=url, sites=site_id)
return HttpResponsePermanentRedirect('%s/' % request.path)
else:
raise
return render_flatpage(request, f)
@csrf_protect
def render_flatpage(request, f):
"""
Internal interface to the flat page view.
"""
# If registration is required for accessing this page, and the user isn't
# logged in, redirect to the login page.
if f.registration_required and not request.user.is_authenticated:
from django.contrib.auth.views import redirect_to_login
return redirect_to_login(request.path)
if f.template_name:
template = loader.select_template((f.template_name, DEFAULT_TEMPLATE))
else:
template = loader.get_template(DEFAULT_TEMPLATE)
# To avoid having to always use the "|safe" filter in flatpage templates,
# mark the title and content as already safe (since they are raw HTML
# content in the first place).
f.title = mark_safe(f.title)
f.content = mark_safe(f.content)
return HttpResponse(template.render({'flatpage': f}, request))
|
9d76d60ec2aea24a76f9bc319eb0e1c36c80db6d7007230eb06693c70c17e01f | import string
from django.core.exceptions import ImproperlyConfigured, ValidationError
from django.db import models
from django.db.models.signals import pre_delete, pre_save
from django.http.request import split_domain_port
from django.utils.translation import gettext_lazy as _
SITE_CACHE = {}
def _simple_domain_name_validator(value):
"""
Validate that the given value contains no whitespaces to prevent common
typos.
"""
checks = ((s in value) for s in string.whitespace)
if any(checks):
raise ValidationError(
_("The domain name cannot contain any spaces or tabs."),
code='invalid',
)
class SiteManager(models.Manager):
use_in_migrations = True
def _get_site_by_id(self, site_id):
if site_id not in SITE_CACHE:
site = self.get(pk=site_id)
SITE_CACHE[site_id] = site
return SITE_CACHE[site_id]
def _get_site_by_request(self, request):
host = request.get_host()
try:
# First attempt to look up the site by host with or without port.
if host not in SITE_CACHE:
SITE_CACHE[host] = self.get(domain__iexact=host)
return SITE_CACHE[host]
except Site.DoesNotExist:
# Fallback to looking up site after stripping port from the host.
domain, port = split_domain_port(host)
if domain not in SITE_CACHE:
SITE_CACHE[domain] = self.get(domain__iexact=domain)
return SITE_CACHE[domain]
def get_current(self, request=None):
"""
Return the current Site based on the SITE_ID in the project's settings.
If SITE_ID isn't defined, return the site with domain matching
request.get_host(). The ``Site`` object is cached the first time it's
retrieved from the database.
"""
from django.conf import settings
if getattr(settings, 'SITE_ID', ''):
site_id = settings.SITE_ID
return self._get_site_by_id(site_id)
elif request:
return self._get_site_by_request(request)
raise ImproperlyConfigured(
"You're using the Django \"sites framework\" without having "
"set the SITE_ID setting. Create a site in your database and "
"set the SITE_ID setting or pass a request to "
"Site.objects.get_current() to fix this error."
)
def clear_cache(self):
"""Clear the ``Site`` object cache."""
global SITE_CACHE
SITE_CACHE = {}
def get_by_natural_key(self, domain):
return self.get(domain=domain)
class Site(models.Model):
domain = models.CharField(
_('domain name'),
max_length=100,
validators=[_simple_domain_name_validator],
unique=True,
)
name = models.CharField(_('display name'), max_length=50)
objects = SiteManager()
class Meta:
db_table = 'django_site'
verbose_name = _('site')
verbose_name_plural = _('sites')
ordering = ('domain',)
def __str__(self):
return self.domain
def natural_key(self):
return (self.domain,)
def clear_site_cache(sender, **kwargs):
"""
Clear the cache (if primed) each time a site is saved or deleted.
"""
instance = kwargs['instance']
using = kwargs['using']
try:
del SITE_CACHE[instance.pk]
except KeyError:
pass
try:
del SITE_CACHE[Site.objects.using(using).get(pk=instance.pk).domain]
except (KeyError, Site.DoesNotExist):
pass
pre_save.connect(clear_site_cache, sender=Site)
pre_delete.connect(clear_site_cache, sender=Site)
|
e54922f858d68efcdef02b3ca0474bcbeb9cfc507bc5562f5ef9a6b67936591c | from collections import defaultdict
from django.apps import apps
from django.db import models
from django.utils.translation import gettext_lazy as _
class ContentTypeManager(models.Manager):
use_in_migrations = True
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Cache shared by all the get_for_* methods to speed up
# ContentType retrieval.
self._cache = {}
def get_by_natural_key(self, app_label, model):
try:
ct = self._cache[self.db][(app_label, model)]
except KeyError:
ct = self.get(app_label=app_label, model=model)
self._add_to_cache(self.db, ct)
return ct
def _get_opts(self, model, for_concrete_model):
if for_concrete_model:
model = model._meta.concrete_model
return model._meta
def _get_from_cache(self, opts):
key = (opts.app_label, opts.model_name)
return self._cache[self.db][key]
def get_for_model(self, model, for_concrete_model=True):
"""
Return the ContentType object for a given model, creating the
ContentType if necessary. Lookups are cached so that subsequent lookups
for the same model don't hit the database.
"""
opts = self._get_opts(model, for_concrete_model)
try:
return self._get_from_cache(opts)
except KeyError:
pass
# The ContentType entry was not found in the cache, therefore we
# proceed to load or create it.
try:
# Start with get() and not get_or_create() in order to use
# the db_for_read (see #20401).
ct = self.get(app_label=opts.app_label, model=opts.model_name)
except self.model.DoesNotExist:
# Not found in the database; we proceed to create it. This time
# use get_or_create to take care of any race conditions.
ct, created = self.get_or_create(
app_label=opts.app_label,
model=opts.model_name,
)
self._add_to_cache(self.db, ct)
return ct
def get_for_models(self, *models, for_concrete_models=True):
"""
Given *models, return a dictionary mapping {model: content_type}.
"""
results = {}
# Models that aren't already in the cache.
needed_app_labels = set()
needed_models = set()
# Mapping of opts to the list of models requiring it.
needed_opts = defaultdict(list)
for model in models:
opts = self._get_opts(model, for_concrete_models)
try:
ct = self._get_from_cache(opts)
except KeyError:
needed_app_labels.add(opts.app_label)
needed_models.add(opts.model_name)
needed_opts[opts].append(model)
else:
results[model] = ct
if needed_opts:
# Lookup required content types from the DB.
cts = self.filter(
app_label__in=needed_app_labels,
model__in=needed_models
)
for ct in cts:
opts_models = needed_opts.pop(ct.model_class()._meta, [])
for model in opts_models:
results[model] = ct
self._add_to_cache(self.db, ct)
# Create content types that weren't in the cache or DB.
for opts, opts_models in needed_opts.items():
ct = self.create(
app_label=opts.app_label,
model=opts.model_name,
)
self._add_to_cache(self.db, ct)
for model in opts_models:
results[model] = ct
return results
def get_for_id(self, id):
"""
Lookup a ContentType by ID. Use the same shared cache as get_for_model
(though ContentTypes are obviously not created on-the-fly by get_by_id).
"""
try:
ct = self._cache[self.db][id]
except KeyError:
# This could raise a DoesNotExist; that's correct behavior and will
# make sure that only correct ctypes get stored in the cache dict.
ct = self.get(pk=id)
self._add_to_cache(self.db, ct)
return ct
def clear_cache(self):
"""
Clear out the content-type cache.
"""
self._cache.clear()
def _add_to_cache(self, using, ct):
"""Insert a ContentType into the cache."""
# Note it's possible for ContentType objects to be stale; model_class() will return None.
# Hence, there is no reliance on model._meta.app_label here, just using the model fields instead.
key = (ct.app_label, ct.model)
self._cache.setdefault(using, {})[key] = ct
self._cache.setdefault(using, {})[ct.id] = ct
class ContentType(models.Model):
app_label = models.CharField(max_length=100)
model = models.CharField(_('python model class name'), max_length=100)
objects = ContentTypeManager()
class Meta:
verbose_name = _('content type')
verbose_name_plural = _('content types')
db_table = 'django_content_type'
unique_together = (('app_label', 'model'),)
def __str__(self):
return self.app_labeled_name
@property
def name(self):
model = self.model_class()
if not model:
return self.model
return str(model._meta.verbose_name)
@property
def app_labeled_name(self):
model = self.model_class()
if not model:
return self.model
return '%s | %s' % (model._meta.app_label, model._meta.verbose_name)
def model_class(self):
"""Return the model class for this type of content."""
try:
return apps.get_model(self.app_label, self.model)
except LookupError:
return None
def get_object_for_this_type(self, **kwargs):
"""
Return an object of this type for the keyword arguments given.
Basically, this is a proxy around this object_type's get_object() model
method. The ObjectNotExist exception, if thrown, will not be caught,
so code that calls this method should catch it.
"""
return self.model_class()._base_manager.using(self._state.db).get(**kwargs)
def get_all_objects_for_this_type(self, **kwargs):
"""
Return all objects of this type for the keyword arguments given.
"""
return self.model_class()._base_manager.using(self._state.db).filter(**kwargs)
def natural_key(self):
return (self.app_label, self.model)
|
075575f402d305a737252574b21d67a375a3ec9dd726e1973db521110df65af6 | import functools
import itertools
import operator
from collections import defaultdict
from django.contrib.contenttypes.models import ContentType
from django.core import checks
from django.core.exceptions import FieldDoesNotExist, ObjectDoesNotExist
from django.db import DEFAULT_DB_ALIAS, models, router, transaction
from django.db.models import DO_NOTHING
from django.db.models.base import ModelBase, make_foreign_order_accessors
from django.db.models.fields.mixins import FieldCacheMixin
from django.db.models.fields.related import (
ForeignObject, ForeignObjectRel, ReverseManyToOneDescriptor,
lazy_related_operation,
)
from django.db.models.query_utils import PathInfo
from django.utils.functional import cached_property
class GenericForeignKey(FieldCacheMixin):
"""
Provide a generic many-to-one relation through the ``content_type`` and
``object_id`` fields.
This class also doubles as an accessor to the related object (similar to
ForwardManyToOneDescriptor) by adding itself as a model attribute.
"""
# Field flags
auto_created = False
concrete = False
editable = False
hidden = False
is_relation = True
many_to_many = False
many_to_one = True
one_to_many = False
one_to_one = False
related_model = None
remote_field = None
def __init__(self, ct_field='content_type', fk_field='object_id', for_concrete_model=True):
self.ct_field = ct_field
self.fk_field = fk_field
self.for_concrete_model = for_concrete_model
self.editable = False
self.rel = None
self.column = None
def contribute_to_class(self, cls, name, **kwargs):
self.name = name
self.model = cls
cls._meta.add_field(self, private=True)
setattr(cls, name, self)
def get_filter_kwargs_for_object(self, obj):
"""See corresponding method on Field"""
return {
self.fk_field: getattr(obj, self.fk_field),
self.ct_field: getattr(obj, self.ct_field),
}
def get_forward_related_filter(self, obj):
"""See corresponding method on RelatedField"""
return {
self.fk_field: obj.pk,
self.ct_field: ContentType.objects.get_for_model(obj).pk,
}
def __str__(self):
model = self.model
app = model._meta.app_label
return '%s.%s.%s' % (app, model._meta.object_name, self.name)
def check(self, **kwargs):
return [
*self._check_field_name(),
*self._check_object_id_field(),
*self._check_content_type_field(),
]
def _check_field_name(self):
if self.name.endswith("_"):
return [
checks.Error(
'Field names must not end with an underscore.',
obj=self,
id='fields.E001',
)
]
else:
return []
def _check_object_id_field(self):
try:
self.model._meta.get_field(self.fk_field)
except FieldDoesNotExist:
return [
checks.Error(
"The GenericForeignKey object ID references the "
"nonexistent field '%s'." % self.fk_field,
obj=self,
id='contenttypes.E001',
)
]
else:
return []
def _check_content_type_field(self):
"""
Check if field named `field_name` in model `model` exists and is a
valid content_type field (is a ForeignKey to ContentType).
"""
try:
field = self.model._meta.get_field(self.ct_field)
except FieldDoesNotExist:
return [
checks.Error(
"The GenericForeignKey content type references the "
"nonexistent field '%s.%s'." % (
self.model._meta.object_name, self.ct_field
),
obj=self,
id='contenttypes.E002',
)
]
else:
if not isinstance(field, models.ForeignKey):
return [
checks.Error(
"'%s.%s' is not a ForeignKey." % (
self.model._meta.object_name, self.ct_field
),
hint=(
"GenericForeignKeys must use a ForeignKey to "
"'contenttypes.ContentType' as the 'content_type' field."
),
obj=self,
id='contenttypes.E003',
)
]
elif field.remote_field.model != ContentType:
return [
checks.Error(
"'%s.%s' is not a ForeignKey to 'contenttypes.ContentType'." % (
self.model._meta.object_name, self.ct_field
),
hint=(
"GenericForeignKeys must use a ForeignKey to "
"'contenttypes.ContentType' as the 'content_type' field."
),
obj=self,
id='contenttypes.E004',
)
]
else:
return []
def get_cache_name(self):
return self.name
def get_content_type(self, obj=None, id=None, using=None):
if obj is not None:
return ContentType.objects.db_manager(obj._state.db).get_for_model(
obj, for_concrete_model=self.for_concrete_model)
elif id is not None:
return ContentType.objects.db_manager(using).get_for_id(id)
else:
# This should never happen. I love comments like this, don't you?
raise Exception("Impossible arguments to GFK.get_content_type!")
def get_prefetch_queryset(self, instances, queryset=None):
if queryset is not None:
raise ValueError("Custom queryset can't be used for this lookup.")
# For efficiency, group the instances by content type and then do one
# query per model
fk_dict = defaultdict(set)
# We need one instance for each group in order to get the right db:
instance_dict = {}
ct_attname = self.model._meta.get_field(self.ct_field).get_attname()
for instance in instances:
# We avoid looking for values if either ct_id or fkey value is None
ct_id = getattr(instance, ct_attname)
if ct_id is not None:
fk_val = getattr(instance, self.fk_field)
if fk_val is not None:
fk_dict[ct_id].add(fk_val)
instance_dict[ct_id] = instance
ret_val = []
for ct_id, fkeys in fk_dict.items():
instance = instance_dict[ct_id]
ct = self.get_content_type(id=ct_id, using=instance._state.db)
ret_val.extend(ct.get_all_objects_for_this_type(pk__in=fkeys))
# For doing the join in Python, we have to match both the FK val and the
# content type, so we use a callable that returns a (fk, class) pair.
def gfk_key(obj):
ct_id = getattr(obj, ct_attname)
if ct_id is None:
return None
else:
model = self.get_content_type(id=ct_id,
using=obj._state.db).model_class()
return (model._meta.pk.get_prep_value(getattr(obj, self.fk_field)),
model)
return (
ret_val,
lambda obj: (obj.pk, obj.__class__),
gfk_key,
True,
self.name,
True,
)
def __get__(self, instance, cls=None):
if instance is None:
return self
# Don't use getattr(instance, self.ct_field) here because that might
# reload the same ContentType over and over (#5570). Instead, get the
# content type ID here, and later when the actual instance is needed,
# use ContentType.objects.get_for_id(), which has a global cache.
f = self.model._meta.get_field(self.ct_field)
ct_id = getattr(instance, f.get_attname(), None)
pk_val = getattr(instance, self.fk_field)
rel_obj = self.get_cached_value(instance, default=None)
if rel_obj is not None:
ct_match = ct_id == self.get_content_type(obj=rel_obj, using=instance._state.db).id
pk_match = rel_obj._meta.pk.to_python(pk_val) == rel_obj.pk
if ct_match and pk_match:
return rel_obj
else:
rel_obj = None
if ct_id is not None:
ct = self.get_content_type(id=ct_id, using=instance._state.db)
try:
rel_obj = ct.get_object_for_this_type(pk=pk_val)
except ObjectDoesNotExist:
pass
self.set_cached_value(instance, rel_obj)
return rel_obj
def __set__(self, instance, value):
ct = None
fk = None
if value is not None:
ct = self.get_content_type(obj=value)
fk = value.pk
setattr(instance, self.ct_field, ct)
setattr(instance, self.fk_field, fk)
self.set_cached_value(instance, value)
class GenericRel(ForeignObjectRel):
"""
Used by GenericRelation to store information about the relation.
"""
def __init__(self, field, to, related_name=None, related_query_name=None, limit_choices_to=None):
super().__init__(
field, to, related_name=related_query_name or '+',
related_query_name=related_query_name,
limit_choices_to=limit_choices_to, on_delete=DO_NOTHING,
)
class GenericRelation(ForeignObject):
"""
Provide a reverse to a relation created by a GenericForeignKey.
"""
# Field flags
auto_created = False
many_to_many = False
many_to_one = False
one_to_many = True
one_to_one = False
rel_class = GenericRel
mti_inherited = False
def __init__(self, to, object_id_field='object_id', content_type_field='content_type',
for_concrete_model=True, related_query_name=None, limit_choices_to=None, **kwargs):
kwargs['rel'] = self.rel_class(
self, to,
related_query_name=related_query_name,
limit_choices_to=limit_choices_to,
)
kwargs['blank'] = True
kwargs['on_delete'] = models.CASCADE
kwargs['editable'] = False
kwargs['serialize'] = False
# This construct is somewhat of an abuse of ForeignObject. This field
# represents a relation from pk to object_id field. But, this relation
# isn't direct, the join is generated reverse along foreign key. So,
# the from_field is object_id field, to_field is pk because of the
# reverse join.
super().__init__(to, from_fields=[object_id_field], to_fields=[], **kwargs)
self.object_id_field_name = object_id_field
self.content_type_field_name = content_type_field
self.for_concrete_model = for_concrete_model
def check(self, **kwargs):
return [
*super().check(**kwargs),
*self._check_generic_foreign_key_existence(),
]
def _is_matching_generic_foreign_key(self, field):
"""
Return True if field is a GenericForeignKey whose content type and
object id fields correspond to the equivalent attributes on this
GenericRelation.
"""
return (
isinstance(field, GenericForeignKey) and
field.ct_field == self.content_type_field_name and
field.fk_field == self.object_id_field_name
)
def _check_generic_foreign_key_existence(self):
target = self.remote_field.model
if isinstance(target, ModelBase):
fields = target._meta.private_fields
if any(self._is_matching_generic_foreign_key(field) for field in fields):
return []
else:
return [
checks.Error(
"The GenericRelation defines a relation with the model "
"'%s.%s', but that model does not have a GenericForeignKey." % (
target._meta.app_label, target._meta.object_name
),
obj=self,
id='contenttypes.E004',
)
]
else:
return []
def resolve_related_fields(self):
self.to_fields = [self.model._meta.pk.name]
return [(self.remote_field.model._meta.get_field(self.object_id_field_name), self.model._meta.pk)]
def _get_path_info_with_parent(self, filtered_relation):
"""
Return the path that joins the current model through any parent models.
The idea is that if you have a GFK defined on a parent model then we
need to join the parent model first, then the child model.
"""
# With an inheritance chain ChildTag -> Tag and Tag defines the
# GenericForeignKey, and a TaggedItem model has a GenericRelation to
# ChildTag, then we need to generate a join from TaggedItem to Tag
# (as Tag.object_id == TaggedItem.pk), and another join from Tag to
# ChildTag (as that is where the relation is to). Do this by first
# generating a join to the parent model, then generating joins to the
# child models.
path = []
opts = self.remote_field.model._meta.concrete_model._meta
parent_opts = opts.get_field(self.object_id_field_name).model._meta
target = parent_opts.pk
path.append(PathInfo(
from_opts=self.model._meta,
to_opts=parent_opts,
target_fields=(target,),
join_field=self.remote_field,
m2m=True,
direct=False,
filtered_relation=filtered_relation,
))
# Collect joins needed for the parent -> child chain. This is easiest
# to do if we collect joins for the child -> parent chain and then
# reverse the direction (call to reverse() and use of
# field.remote_field.get_path_info()).
parent_field_chain = []
while parent_opts != opts:
field = opts.get_ancestor_link(parent_opts.model)
parent_field_chain.append(field)
opts = field.remote_field.model._meta
parent_field_chain.reverse()
for field in parent_field_chain:
path.extend(field.remote_field.get_path_info())
return path
def get_path_info(self, filtered_relation=None):
opts = self.remote_field.model._meta
object_id_field = opts.get_field(self.object_id_field_name)
if object_id_field.model != opts.model:
return self._get_path_info_with_parent(filtered_relation)
else:
target = opts.pk
return [PathInfo(
from_opts=self.model._meta,
to_opts=opts,
target_fields=(target,),
join_field=self.remote_field,
m2m=True,
direct=False,
filtered_relation=filtered_relation,
)]
def get_reverse_path_info(self, filtered_relation=None):
opts = self.model._meta
from_opts = self.remote_field.model._meta
return [PathInfo(
from_opts=from_opts,
to_opts=opts,
target_fields=(opts.pk,),
join_field=self,
m2m=not self.unique,
direct=False,
filtered_relation=filtered_relation,
)]
def value_to_string(self, obj):
qs = getattr(obj, self.name).all()
return str([instance.pk for instance in qs])
def contribute_to_class(self, cls, name, **kwargs):
kwargs['private_only'] = True
super().contribute_to_class(cls, name, **kwargs)
self.model = cls
# Disable the reverse relation for fields inherited by subclasses of a
# model in multi-table inheritance. The reverse relation points to the
# field of the base model.
if self.mti_inherited:
self.remote_field.related_name = '+'
self.remote_field.related_query_name = None
setattr(cls, self.name, ReverseGenericManyToOneDescriptor(self.remote_field))
# Add get_RELATED_order() and set_RELATED_order() to the model this
# field belongs to, if the model on the other end of this relation
# is ordered with respect to its corresponding GenericForeignKey.
if not cls._meta.abstract:
def make_generic_foreign_order_accessors(related_model, model):
if self._is_matching_generic_foreign_key(model._meta.order_with_respect_to):
make_foreign_order_accessors(model, related_model)
lazy_related_operation(make_generic_foreign_order_accessors, self.model, self.remote_field.model)
def set_attributes_from_rel(self):
pass
def get_internal_type(self):
return "ManyToManyField"
def get_content_type(self):
"""
Return the content type associated with this field's model.
"""
return ContentType.objects.get_for_model(self.model,
for_concrete_model=self.for_concrete_model)
def get_extra_restriction(self, where_class, alias, remote_alias):
field = self.remote_field.model._meta.get_field(self.content_type_field_name)
contenttype_pk = self.get_content_type().pk
cond = where_class()
lookup = field.get_lookup('exact')(field.get_col(remote_alias), contenttype_pk)
cond.add(lookup, 'AND')
return cond
def bulk_related_objects(self, objs, using=DEFAULT_DB_ALIAS):
"""
Return all objects related to ``objs`` via this ``GenericRelation``.
"""
return self.remote_field.model._base_manager.db_manager(using).filter(**{
"%s__pk" % self.content_type_field_name: ContentType.objects.db_manager(using).get_for_model(
self.model, for_concrete_model=self.for_concrete_model).pk,
"%s__in" % self.object_id_field_name: [obj.pk for obj in objs]
})
class ReverseGenericManyToOneDescriptor(ReverseManyToOneDescriptor):
"""
Accessor to the related objects manager on the one-to-many relation created
by GenericRelation.
In the example::
class Post(Model):
comments = GenericRelation(Comment)
``post.comments`` is a ReverseGenericManyToOneDescriptor instance.
"""
@cached_property
def related_manager_cls(self):
return create_generic_related_manager(
self.rel.model._default_manager.__class__,
self.rel,
)
def create_generic_related_manager(superclass, rel):
"""
Factory function to create a manager that subclasses another manager
(generally the default manager of a given model) and adds behaviors
specific to generic relations.
"""
class GenericRelatedObjectManager(superclass):
def __init__(self, instance=None):
super().__init__()
self.instance = instance
self.model = rel.model
self.get_content_type = functools.partial(
ContentType.objects.db_manager(instance._state.db).get_for_model,
for_concrete_model=rel.field.for_concrete_model,
)
self.content_type = self.get_content_type(instance)
self.content_type_field_name = rel.field.content_type_field_name
self.object_id_field_name = rel.field.object_id_field_name
self.prefetch_cache_name = rel.field.attname
self.pk_val = instance.pk
self.core_filters = {
'%s__pk' % self.content_type_field_name: self.content_type.id,
self.object_id_field_name: self.pk_val,
}
def __call__(self, *, manager):
manager = getattr(self.model, manager)
manager_class = create_generic_related_manager(manager.__class__, rel)
return manager_class(instance=self.instance)
do_not_call_in_templates = True
def __str__(self):
return repr(self)
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)
return queryset.using(db).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)
# Group instances by content types.
content_type_queries = (
models.Q(**{
'%s__pk' % self.content_type_field_name: content_type_id,
'%s__in' % self.object_id_field_name: {obj.pk for obj in objs}
})
for content_type_id, objs in itertools.groupby(
sorted(instances, key=lambda obj: self.get_content_type(obj).pk),
lambda obj: self.get_content_type(obj).pk,
)
)
query = functools.reduce(operator.or_, content_type_queries)
# We (possibly) need to convert object IDs to the type of the
# instances' PK in order to match up instances:
object_id_converter = instances[0]._meta.pk.to_python
return (
queryset.filter(query),
lambda relobj: (
object_id_converter(getattr(relobj, self.object_id_field_name)),
relobj.content_type_id
),
lambda obj: (obj.pk, self.get_content_type(obj).pk),
False,
self.prefetch_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.content_type_field_name, self.content_type)
setattr(obj, self.object_id_field_name, self.pk_val)
if bulk:
pks = []
for obj in objs:
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
)
check_and_update_obj(obj)
pks.append(obj.pk)
self.model._base_manager.using(db).filter(pk__in=pks).update(**{
self.content_type_field_name: self.content_type,
self.object_id_field_name: self.pk_val,
})
else:
with transaction.atomic(using=db, savepoint=False):
for obj in objs:
check_and_update_obj(obj)
obj.save()
add.alters_data = True
def remove(self, *objs, bulk=True):
if not objs:
return
self._clear(self.filter(pk__in=[o.pk for o in objs]), 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.delete()` creates its own atomic block which
# contains the `pre_delete` and `post_delete` signal handlers.
queryset.delete()
else:
with transaction.atomic(using=db, savepoint=False):
for obj in queryset:
obj.delete()
_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)
db = router.db_for_write(self.model, instance=self.instance)
with transaction.atomic(using=db, savepoint=False):
if clear:
self.clear()
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)
self.add(*new_objs, bulk=bulk)
set.alters_data = True
def create(self, **kwargs):
self._remove_prefetched_objects()
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).create(**kwargs)
create.alters_data = True
def get_or_create(self, **kwargs):
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).get_or_create(**kwargs)
get_or_create.alters_data = True
def update_or_create(self, **kwargs):
kwargs[self.content_type_field_name] = self.content_type
kwargs[self.object_id_field_name] = self.pk_val
db = router.db_for_write(self.model, instance=self.instance)
return super().using(db).update_or_create(**kwargs)
update_or_create.alters_data = True
return GenericRelatedObjectManager
|
725ab610d350dee8c4bae739807483bdacf7d245961de96740f63ab7352ed2ab | import pickle
from django.core.signing import JSONSerializer as BaseJSONSerializer
class PickleSerializer:
"""
Simple wrapper around pickle to be used in signing.dumps and
signing.loads.
"""
protocol = pickle.HIGHEST_PROTOCOL
def dumps(self, obj):
return pickle.dumps(obj, self.protocol)
def loads(self, data):
return pickle.loads(data)
JSONSerializer = BaseJSONSerializer
|
2caf46ffa2910cdfadff86504c19f8166cb4717bac81f23e5331890d9c8c0e7a | import time
from importlib import import_module
from django.conf import settings
from django.contrib.sessions.backends.base import UpdateError
from django.core.exceptions import SuspiciousOperation
from django.utils.cache import patch_vary_headers
from django.utils.deprecation import MiddlewareMixin
from django.utils.http import http_date
class SessionMiddleware(MiddlewareMixin):
def __init__(self, get_response=None):
self.get_response = get_response
engine = import_module(settings.SESSION_ENGINE)
self.SessionStore = engine.SessionStore
def process_request(self, request):
session_key = request.COOKIES.get(settings.SESSION_COOKIE_NAME)
request.session = self.SessionStore(session_key)
def process_response(self, request, response):
"""
If request.session was modified, or if the configuration is to save the
session every time, save the changes and set a session cookie or delete
the session cookie if the session has been emptied.
"""
try:
accessed = request.session.accessed
modified = request.session.modified
empty = request.session.is_empty()
except AttributeError:
return response
# First check if we need to delete this cookie.
# The session should be deleted only if the session is entirely empty.
if settings.SESSION_COOKIE_NAME in request.COOKIES and empty:
response.delete_cookie(
settings.SESSION_COOKIE_NAME,
path=settings.SESSION_COOKIE_PATH,
domain=settings.SESSION_COOKIE_DOMAIN,
)
patch_vary_headers(response, ('Cookie',))
else:
if accessed:
patch_vary_headers(response, ('Cookie',))
if (modified or settings.SESSION_SAVE_EVERY_REQUEST) and not empty:
if request.session.get_expire_at_browser_close():
max_age = None
expires = None
else:
max_age = request.session.get_expiry_age()
expires_time = time.time() + max_age
expires = http_date(expires_time)
# Save the session data and refresh the client cookie.
# Skip session save for 500 responses, refs #3881.
if response.status_code != 500:
try:
request.session.save()
except UpdateError:
raise SuspiciousOperation(
"The request's session was deleted before the "
"request completed. The user may have logged "
"out in a concurrent request, for example."
)
response.set_cookie(
settings.SESSION_COOKIE_NAME,
request.session.session_key, max_age=max_age,
expires=expires, domain=settings.SESSION_COOKIE_DOMAIN,
path=settings.SESSION_COOKIE_PATH,
secure=settings.SESSION_COOKIE_SECURE or None,
httponly=settings.SESSION_COOKIE_HTTPONLY or None,
samesite=settings.SESSION_COOKIE_SAMESITE,
)
return response
|
44afb9182514690b41b830f7940a2b692ec6d397f3621479a7469c2abce94151 | from ctypes import c_void_p
class CPointerBase:
"""
Base class for objects that have a pointer access property
that controls access to the underlying C pointer.
"""
_ptr = None # Initially the pointer is NULL.
ptr_type = c_void_p
destructor = None
null_ptr_exception_class = AttributeError
@property
def ptr(self):
# Raise an exception if the pointer isn't valid so that NULL pointers
# aren't passed to routines -- that's very bad.
if self._ptr:
return self._ptr
raise self.null_ptr_exception_class('NULL %s pointer encountered.' % self.__class__.__name__)
@ptr.setter
def ptr(self, ptr):
# Only allow the pointer to be set with pointers of the compatible
# type or None (NULL).
if not (ptr is None or isinstance(ptr, self.ptr_type)):
raise TypeError('Incompatible pointer type: %s.' % type(ptr))
self._ptr = ptr
def __del__(self):
"""
Free the memory used by the C++ object.
"""
if self.destructor and self._ptr:
try:
self.destructor(self.ptr)
except (AttributeError, ImportError, TypeError):
pass # Some part might already have been garbage collected
|
e374e649ae342d1dcb82e1385437814e125980efeb6ed7eb4f963a0d0ed10624 | from django.contrib.syndication.views import Feed as BaseFeed
from django.utils.feedgenerator import Atom1Feed, Rss201rev2Feed
class GeoFeedMixin:
"""
This mixin provides the necessary routines for SyndicationFeed subclasses
to produce simple GeoRSS or W3C Geo elements.
"""
def georss_coords(self, coords):
"""
In GeoRSS coordinate pairs are ordered by lat/lon and separated by
a single white space. Given a tuple of coordinates, return a string
GeoRSS representation.
"""
return ' '.join('%f %f' % (coord[1], coord[0]) for coord in coords)
def add_georss_point(self, handler, coords, w3c_geo=False):
"""
Adds a GeoRSS point with the given coords using the given handler.
Handles the differences between simple GeoRSS and the more popular
W3C Geo specification.
"""
if w3c_geo:
lon, lat = coords[:2]
handler.addQuickElement('geo:lat', '%f' % lat)
handler.addQuickElement('geo:lon', '%f' % lon)
else:
handler.addQuickElement('georss:point', self.georss_coords((coords,)))
def add_georss_element(self, handler, item, w3c_geo=False):
"""Add a GeoRSS XML element using the given item and handler."""
# Getting the Geometry object.
geom = item.get('geometry')
if geom is not None:
if isinstance(geom, (list, tuple)):
# Special case if a tuple/list was passed in. The tuple may be
# a point or a box
box_coords = None
if isinstance(geom[0], (list, tuple)):
# Box: ( (X0, Y0), (X1, Y1) )
if len(geom) == 2:
box_coords = geom
else:
raise ValueError('Only should be two sets of coordinates.')
else:
if len(geom) == 2:
# Point: (X, Y)
self.add_georss_point(handler, geom, w3c_geo=w3c_geo)
elif len(geom) == 4:
# Box: (X0, Y0, X1, Y1)
box_coords = (geom[:2], geom[2:])
else:
raise ValueError('Only should be 2 or 4 numeric elements.')
# If a GeoRSS box was given via tuple.
if box_coords is not None:
if w3c_geo:
raise ValueError('Cannot use simple GeoRSS box in W3C Geo feeds.')
handler.addQuickElement('georss:box', self.georss_coords(box_coords))
else:
# Getting the lowercase geometry type.
gtype = str(geom.geom_type).lower()
if gtype == 'point':
self.add_georss_point(handler, geom.coords, w3c_geo=w3c_geo)
else:
if w3c_geo:
raise ValueError('W3C Geo only supports Point geometries.')
# For formatting consistent w/the GeoRSS simple standard:
# http://georss.org/1.0#simple
if gtype in ('linestring', 'linearring'):
handler.addQuickElement('georss:line', self.georss_coords(geom.coords))
elif gtype in ('polygon',):
# Only support the exterior ring.
handler.addQuickElement('georss:polygon', self.georss_coords(geom[0].coords))
else:
raise ValueError('Geometry type "%s" not supported.' % geom.geom_type)
# ### SyndicationFeed subclasses ###
class GeoRSSFeed(Rss201rev2Feed, GeoFeedMixin):
def rss_attributes(self):
attrs = super().rss_attributes()
attrs['xmlns:georss'] = 'http://www.georss.org/georss'
return attrs
def add_item_elements(self, handler, item):
super().add_item_elements(handler, item)
self.add_georss_element(handler, item)
def add_root_elements(self, handler):
super().add_root_elements(handler)
self.add_georss_element(handler, self.feed)
class GeoAtom1Feed(Atom1Feed, GeoFeedMixin):
def root_attributes(self):
attrs = super().root_attributes()
attrs['xmlns:georss'] = 'http://www.georss.org/georss'
return attrs
def add_item_elements(self, handler, item):
super().add_item_elements(handler, item)
self.add_georss_element(handler, item)
def add_root_elements(self, handler):
super().add_root_elements(handler)
self.add_georss_element(handler, self.feed)
class W3CGeoFeed(Rss201rev2Feed, GeoFeedMixin):
def rss_attributes(self):
attrs = super().rss_attributes()
attrs['xmlns:geo'] = 'http://www.w3.org/2003/01/geo/wgs84_pos#'
return attrs
def add_item_elements(self, handler, item):
super().add_item_elements(handler, item)
self.add_georss_element(handler, item, w3c_geo=True)
def add_root_elements(self, handler):
super().add_root_elements(handler)
self.add_georss_element(handler, self.feed, w3c_geo=True)
# ### Feed subclass ###
class Feed(BaseFeed):
"""
This is a subclass of the `Feed` from `django.contrib.syndication`.
This allows users to define a `geometry(obj)` and/or `item_geometry(item)`
methods on their own subclasses so that geo-referenced information may
placed in the feed.
"""
feed_type = GeoRSSFeed
def feed_extra_kwargs(self, obj):
return {'geometry': self._get_dynamic_attr('geometry', obj)}
def item_extra_kwargs(self, item):
return {'geometry': self._get_dynamic_attr('item_geometry', item)}
|
95179d52db72cae8318a29c166945426e033d9851845c8a27ae8f3ccdd06e9ab | # Copyright (c) 2007, Robert Coup <[email protected]>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of Distance nor the names of its contributors may be used
# to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
"""
Distance and Area objects to allow for sensible and convenient calculation
and conversions.
Authors: Robert Coup, Justin Bronn, Riccardo Di Virgilio
Inspired by GeoPy (https://github.com/geopy/geopy)
and Geoff Biggs' PhD work on dimensioned units for robotics.
"""
from decimal import Decimal
from functools import total_ordering
__all__ = ['A', 'Area', 'D', 'Distance']
NUMERIC_TYPES = (int, float, Decimal)
AREA_PREFIX = "sq_"
def pretty_name(obj):
return obj.__name__ if obj.__class__ == type else obj.__class__.__name__
@total_ordering
class MeasureBase:
STANDARD_UNIT = None
ALIAS = {}
UNITS = {}
LALIAS = {}
def __init__(self, default_unit=None, **kwargs):
value, self._default_unit = self.default_units(kwargs)
setattr(self, self.STANDARD_UNIT, value)
if default_unit and isinstance(default_unit, str):
self._default_unit = default_unit
def _get_standard(self):
return getattr(self, self.STANDARD_UNIT)
def _set_standard(self, value):
setattr(self, self.STANDARD_UNIT, value)
standard = property(_get_standard, _set_standard)
def __getattr__(self, name):
if name in self.UNITS:
return self.standard / self.UNITS[name]
else:
raise AttributeError('Unknown unit type: %s' % name)
def __repr__(self):
return '%s(%s=%s)' % (pretty_name(self), self._default_unit, getattr(self, self._default_unit))
def __str__(self):
return '%s %s' % (getattr(self, self._default_unit), self._default_unit)
# **** Comparison methods ****
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.standard == other.standard
else:
return NotImplemented
def __lt__(self, other):
if isinstance(other, self.__class__):
return self.standard < other.standard
else:
return NotImplemented
# **** Operators methods ****
def __add__(self, other):
if isinstance(other, self.__class__):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard + other.standard)}
)
else:
raise TypeError('%(class)s must be added with %(class)s' % {"class": pretty_name(self)})
def __iadd__(self, other):
if isinstance(other, self.__class__):
self.standard += other.standard
return self
else:
raise TypeError('%(class)s must be added with %(class)s' % {"class": pretty_name(self)})
def __sub__(self, other):
if isinstance(other, self.__class__):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard - other.standard)}
)
else:
raise TypeError('%(class)s must be subtracted from %(class)s' % {"class": pretty_name(self)})
def __isub__(self, other):
if isinstance(other, self.__class__):
self.standard -= other.standard
return self
else:
raise TypeError('%(class)s must be subtracted from %(class)s' % {"class": pretty_name(self)})
def __mul__(self, other):
if isinstance(other, NUMERIC_TYPES):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard * other)}
)
else:
raise TypeError('%(class)s must be multiplied with number' % {"class": pretty_name(self)})
def __imul__(self, other):
if isinstance(other, NUMERIC_TYPES):
self.standard *= float(other)
return self
else:
raise TypeError('%(class)s must be multiplied with number' % {"class": pretty_name(self)})
def __rmul__(self, other):
return self * other
def __truediv__(self, other):
if isinstance(other, self.__class__):
return self.standard / other.standard
if isinstance(other, NUMERIC_TYPES):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard / other)}
)
else:
raise TypeError('%(class)s must be divided with number or %(class)s' % {"class": pretty_name(self)})
def __itruediv__(self, other):
if isinstance(other, NUMERIC_TYPES):
self.standard /= float(other)
return self
else:
raise TypeError('%(class)s must be divided with number' % {"class": pretty_name(self)})
def __bool__(self):
return bool(self.standard)
def default_units(self, kwargs):
"""
Return the unit value and the default units specified
from the given keyword arguments dictionary.
"""
val = 0.0
default_unit = self.STANDARD_UNIT
for unit, value in kwargs.items():
if not isinstance(value, float):
value = float(value)
if unit in self.UNITS:
val += self.UNITS[unit] * value
default_unit = unit
elif unit in self.ALIAS:
u = self.ALIAS[unit]
val += self.UNITS[u] * value
default_unit = u
else:
lower = unit.lower()
if lower in self.UNITS:
val += self.UNITS[lower] * value
default_unit = lower
elif lower in self.LALIAS:
u = self.LALIAS[lower]
val += self.UNITS[u] * value
default_unit = u
else:
raise AttributeError('Unknown unit type: %s' % unit)
return val, default_unit
@classmethod
def unit_attname(cls, unit_str):
"""
Retrieve the unit attribute name for the given unit string.
For example, if the given unit string is 'metre', return 'm'.
Raise an exception if an attribute cannot be found.
"""
lower = unit_str.lower()
if unit_str in cls.UNITS:
return unit_str
elif lower in cls.UNITS:
return lower
elif lower in cls.LALIAS:
return cls.LALIAS[lower]
else:
raise Exception('Could not find a unit keyword associated with "%s"' % unit_str)
class Distance(MeasureBase):
STANDARD_UNIT = "m"
UNITS = {
'chain': 20.1168,
'chain_benoit': 20.116782,
'chain_sears': 20.1167645,
'british_chain_benoit': 20.1167824944,
'british_chain_sears': 20.1167651216,
'british_chain_sears_truncated': 20.116756,
'cm': 0.01,
'british_ft': 0.304799471539,
'british_yd': 0.914398414616,
'clarke_ft': 0.3047972654,
'clarke_link': 0.201166195164,
'fathom': 1.8288,
'ft': 0.3048,
'furlong': 201.168,
'german_m': 1.0000135965,
'gold_coast_ft': 0.304799710181508,
'indian_yd': 0.914398530744,
'inch': 0.0254,
'km': 1000.0,
'link': 0.201168,
'link_benoit': 0.20116782,
'link_sears': 0.20116765,
'm': 1.0,
'mi': 1609.344,
'mm': 0.001,
'nm': 1852.0,
'nm_uk': 1853.184,
'rod': 5.0292,
'sears_yd': 0.91439841,
'survey_ft': 0.304800609601,
'um': 0.000001,
'yd': 0.9144,
}
# Unit aliases for `UNIT` terms encountered in Spatial Reference WKT.
ALIAS = {
'centimeter': 'cm',
'foot': 'ft',
'inches': 'inch',
'kilometer': 'km',
'kilometre': 'km',
'meter': 'm',
'metre': 'm',
'micrometer': 'um',
'micrometre': 'um',
'millimeter': 'mm',
'millimetre': 'mm',
'mile': 'mi',
'yard': 'yd',
'British chain (Benoit 1895 B)': 'british_chain_benoit',
'British chain (Sears 1922)': 'british_chain_sears',
'British chain (Sears 1922 truncated)': 'british_chain_sears_truncated',
'British foot (Sears 1922)': 'british_ft',
'British foot': 'british_ft',
'British yard (Sears 1922)': 'british_yd',
'British yard': 'british_yd',
"Clarke's Foot": 'clarke_ft',
"Clarke's link": 'clarke_link',
'Chain (Benoit)': 'chain_benoit',
'Chain (Sears)': 'chain_sears',
'Foot (International)': 'ft',
'Furrow Long': 'furlong',
'German legal metre': 'german_m',
'Gold Coast foot': 'gold_coast_ft',
'Indian yard': 'indian_yd',
'Link (Benoit)': 'link_benoit',
'Link (Sears)': 'link_sears',
'Nautical Mile': 'nm',
'Nautical Mile (UK)': 'nm_uk',
'US survey foot': 'survey_ft',
'U.S. Foot': 'survey_ft',
'Yard (Indian)': 'indian_yd',
'Yard (Sears)': 'sears_yd'
}
LALIAS = {k.lower(): v for k, v in ALIAS.items()}
def __mul__(self, other):
if isinstance(other, self.__class__):
return Area(
default_unit=AREA_PREFIX + self._default_unit,
**{AREA_PREFIX + self.STANDARD_UNIT: (self.standard * other.standard)}
)
elif isinstance(other, NUMERIC_TYPES):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard * other)}
)
else:
raise TypeError('%(distance)s must be multiplied with number or %(distance)s' % {
"distance": pretty_name(self.__class__),
})
class Area(MeasureBase):
STANDARD_UNIT = AREA_PREFIX + Distance.STANDARD_UNIT
# Getting the square units values and the alias dictionary.
UNITS = {'%s%s' % (AREA_PREFIX, k): v ** 2 for k, v in Distance.UNITS.items()}
ALIAS = {k: '%s%s' % (AREA_PREFIX, v) for k, v in Distance.ALIAS.items()}
LALIAS = {k.lower(): v for k, v in ALIAS.items()}
def __truediv__(self, other):
if isinstance(other, NUMERIC_TYPES):
return self.__class__(
default_unit=self._default_unit,
**{self.STANDARD_UNIT: (self.standard / other)}
)
else:
raise TypeError('%(class)s must be divided by a number' % {"class": pretty_name(self)})
# Shortcuts
D = Distance
A = Area
|
82a7c2a6877e5a9de714173c9a95a16cfd90496b1613be0827e865726f3fed26 | from django.contrib.sitemaps import ping_google
from django.core.management.base import BaseCommand
class Command(BaseCommand):
help = "Ping Google with an updated sitemap, pass optional url of sitemap"
def add_arguments(self, parser):
parser.add_argument('sitemap_url', nargs='?')
parser.add_argument('--sitemap-uses-http', action='store_true')
def handle(self, *args, **options):
ping_google(
sitemap_url=options['sitemap_url'],
sitemap_uses_https=not options['sitemap_uses_http'],
)
|
21bcb2660f1c4d4fb5f5979183a2e774b7d12b44a87af0f0a8ab6bab3855a7a7 | from django.contrib.messages.storage.base import BaseStorage
from django.contrib.messages.storage.cookie import CookieStorage
from django.contrib.messages.storage.session import SessionStorage
class FallbackStorage(BaseStorage):
"""
Try to store all messages in the first backend. Store any unstored
messages in each subsequent backend.
"""
storage_classes = (CookieStorage, SessionStorage)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.storages = [storage_class(*args, **kwargs)
for storage_class in self.storage_classes]
self._used_storages = set()
def _get(self, *args, **kwargs):
"""
Get a single list of messages from all storage backends.
"""
all_messages = []
for storage in self.storages:
messages, all_retrieved = storage._get()
# If the backend hasn't been used, no more retrieval is necessary.
if messages is None:
break
if messages:
self._used_storages.add(storage)
all_messages.extend(messages)
# If this storage class contained all the messages, no further
# retrieval is necessary
if all_retrieved:
break
return all_messages, all_retrieved
def _store(self, messages, response, *args, **kwargs):
"""
Store the messages and return any unstored messages after trying all
backends.
For each storage backend, any messages not stored are passed on to the
next backend.
"""
for storage in self.storages:
if messages:
messages = storage._store(messages, response, remove_oldest=False)
# Even if there are no more messages, continue iterating to ensure
# storages which contained messages are flushed.
elif storage in self._used_storages:
storage._store([], response)
self._used_storages.remove(storage)
return messages
|
ddf5f5074a2be7577bf515d5377370edbc723d835288babce80c81f10e36c8cf | import json
from django.contrib.postgres import lookups
from django.contrib.postgres.forms import SimpleArrayField
from django.contrib.postgres.validators import ArrayMaxLengthValidator
from django.core import checks, exceptions
from django.db.models import Field, IntegerField, Transform
from django.db.models.lookups import Exact, In
from django.utils.translation import gettext_lazy as _
from ..utils import prefix_validation_error
from .mixins import CheckFieldDefaultMixin
from .utils import AttributeSetter
__all__ = ['ArrayField']
class ArrayField(CheckFieldDefaultMixin, Field):
empty_strings_allowed = False
default_error_messages = {
'item_invalid': _('Item %(nth)s in the array did not validate:'),
'nested_array_mismatch': _('Nested arrays must have the same length.'),
}
_default_hint = ('list', '[]')
def __init__(self, base_field, size=None, **kwargs):
self.base_field = base_field
self.size = size
if self.size:
self.default_validators = [*self.default_validators, ArrayMaxLengthValidator(self.size)]
# For performance, only add a from_db_value() method if the base field
# implements it.
if hasattr(self.base_field, 'from_db_value'):
self.from_db_value = self._from_db_value
super().__init__(**kwargs)
@property
def model(self):
try:
return self.__dict__['model']
except KeyError:
raise AttributeError("'%s' object has no attribute 'model'" % self.__class__.__name__)
@model.setter
def model(self, model):
self.__dict__['model'] = model
self.base_field.model = model
def check(self, **kwargs):
errors = super().check(**kwargs)
if self.base_field.remote_field:
errors.append(
checks.Error(
'Base field for array cannot be a related field.',
obj=self,
id='postgres.E002'
)
)
else:
# Remove the field name checks as they are not needed here.
base_errors = self.base_field.check()
if base_errors:
messages = '\n '.join('%s (%s)' % (error.msg, error.id) for error in base_errors)
errors.append(
checks.Error(
'Base field for array has errors:\n %s' % messages,
obj=self,
id='postgres.E001'
)
)
return errors
def set_attributes_from_name(self, name):
super().set_attributes_from_name(name)
self.base_field.set_attributes_from_name(name)
@property
def description(self):
return 'Array of %s' % self.base_field.description
def db_type(self, connection):
size = self.size or ''
return '%s[%s]' % (self.base_field.db_type(connection), size)
def get_placeholder(self, value, compiler, connection):
return '%s::{}'.format(self.db_type(connection))
def get_db_prep_value(self, value, connection, prepared=False):
if isinstance(value, (list, tuple)):
return [self.base_field.get_db_prep_value(i, connection, prepared=False) for i in value]
return value
def deconstruct(self):
name, path, args, kwargs = super().deconstruct()
if path == 'django.contrib.postgres.fields.array.ArrayField':
path = 'django.contrib.postgres.fields.ArrayField'
kwargs.update({
'base_field': self.base_field.clone(),
'size': self.size,
})
return name, path, args, kwargs
def to_python(self, value):
if isinstance(value, str):
# Assume we're deserializing
vals = json.loads(value)
value = [self.base_field.to_python(val) for val in vals]
return value
def _from_db_value(self, value, expression, connection):
if value is None:
return value
return [
self.base_field.from_db_value(item, expression, connection)
for item in value
]
def value_to_string(self, obj):
values = []
vals = self.value_from_object(obj)
base_field = self.base_field
for val in vals:
if val is None:
values.append(None)
else:
obj = AttributeSetter(base_field.attname, val)
values.append(base_field.value_to_string(obj))
return json.dumps(values)
def get_transform(self, name):
transform = super().get_transform(name)
if transform:
return transform
if '_' not in name:
try:
index = int(name)
except ValueError:
pass
else:
index += 1 # postgres uses 1-indexing
return IndexTransformFactory(index, self.base_field)
try:
start, end = name.split('_')
start = int(start) + 1
end = int(end) # don't add one here because postgres slices are weird
except ValueError:
pass
else:
return SliceTransformFactory(start, end)
def validate(self, value, model_instance):
super().validate(value, model_instance)
for index, part in enumerate(value):
try:
self.base_field.validate(part, model_instance)
except exceptions.ValidationError as error:
raise prefix_validation_error(
error,
prefix=self.error_messages['item_invalid'],
code='item_invalid',
params={'nth': index + 1},
)
if isinstance(self.base_field, ArrayField):
if len({len(i) for i in value}) > 1:
raise exceptions.ValidationError(
self.error_messages['nested_array_mismatch'],
code='nested_array_mismatch',
)
def run_validators(self, value):
super().run_validators(value)
for index, part in enumerate(value):
try:
self.base_field.run_validators(part)
except exceptions.ValidationError as error:
raise prefix_validation_error(
error,
prefix=self.error_messages['item_invalid'],
code='item_invalid',
params={'nth': index + 1},
)
def formfield(self, **kwargs):
return super().formfield(**{
'form_class': SimpleArrayField,
'base_field': self.base_field.formfield(),
'max_length': self.size,
**kwargs,
})
@ArrayField.register_lookup
class ArrayContains(lookups.DataContains):
def as_sql(self, qn, connection):
sql, params = super().as_sql(qn, connection)
sql = '%s::%s' % (sql, self.lhs.output_field.db_type(connection))
return sql, params
@ArrayField.register_lookup
class ArrayContainedBy(lookups.ContainedBy):
def as_sql(self, qn, connection):
sql, params = super().as_sql(qn, connection)
sql = '%s::%s' % (sql, self.lhs.output_field.db_type(connection))
return sql, params
@ArrayField.register_lookup
class ArrayExact(Exact):
def as_sql(self, qn, connection):
sql, params = super().as_sql(qn, connection)
sql = '%s::%s' % (sql, self.lhs.output_field.db_type(connection))
return sql, params
@ArrayField.register_lookup
class ArrayOverlap(lookups.Overlap):
def as_sql(self, qn, connection):
sql, params = super().as_sql(qn, connection)
sql = '%s::%s' % (sql, self.lhs.output_field.db_type(connection))
return sql, params
@ArrayField.register_lookup
class ArrayLenTransform(Transform):
lookup_name = 'len'
output_field = IntegerField()
def as_sql(self, compiler, connection):
lhs, params = compiler.compile(self.lhs)
# Distinguish NULL and empty arrays
return (
'CASE WHEN %(lhs)s IS NULL THEN NULL ELSE '
'coalesce(array_length(%(lhs)s, 1), 0) END'
) % {'lhs': lhs}, params
@ArrayField.register_lookup
class ArrayInLookup(In):
def get_prep_lookup(self):
values = super().get_prep_lookup()
if hasattr(values, 'resolve_expression'):
return values
# In.process_rhs() expects values to be hashable, so convert lists
# to tuples.
prepared_values = []
for value in values:
if hasattr(value, 'resolve_expression'):
prepared_values.append(value)
else:
prepared_values.append(tuple(value))
return prepared_values
class IndexTransform(Transform):
def __init__(self, index, base_field, *args, **kwargs):
super().__init__(*args, **kwargs)
self.index = index
self.base_field = base_field
def as_sql(self, compiler, connection):
lhs, params = compiler.compile(self.lhs)
return '%s[%s]' % (lhs, self.index), params
@property
def output_field(self):
return self.base_field
class IndexTransformFactory:
def __init__(self, index, base_field):
self.index = index
self.base_field = base_field
def __call__(self, *args, **kwargs):
return IndexTransform(self.index, self.base_field, *args, **kwargs)
class SliceTransform(Transform):
def __init__(self, start, end, *args, **kwargs):
super().__init__(*args, **kwargs)
self.start = start
self.end = end
def as_sql(self, compiler, connection):
lhs, params = compiler.compile(self.lhs)
return '%s[%s:%s]' % (lhs, self.start, self.end), params
class SliceTransformFactory:
def __init__(self, start, end):
self.start = start
self.end = end
def __call__(self, *args, **kwargs):
return SliceTransform(self.start, self.end, *args, **kwargs)
|
764b06699f04215f05b278bb768ef338af9fbc44a06011a86a03520d3e8f45cc | import datetime
import json
from psycopg2.extras import DateRange, DateTimeTZRange, NumericRange, Range
from django.contrib.postgres import forms, lookups
from django.db import models
from .utils import AttributeSetter
__all__ = [
'RangeField', 'IntegerRangeField', 'BigIntegerRangeField',
'DecimalRangeField', 'DateTimeRangeField', 'DateRangeField',
'FloatRangeField',
]
class RangeField(models.Field):
empty_strings_allowed = False
def __init__(self, *args, **kwargs):
# Initializing base_field here ensures that its model matches the model for self.
if hasattr(self, 'base_field'):
self.base_field = self.base_field()
super().__init__(*args, **kwargs)
@property
def model(self):
try:
return self.__dict__['model']
except KeyError:
raise AttributeError("'%s' object has no attribute 'model'" % self.__class__.__name__)
@model.setter
def model(self, model):
self.__dict__['model'] = model
self.base_field.model = model
def get_prep_value(self, value):
if value is None:
return None
elif isinstance(value, Range):
return value
elif isinstance(value, (list, tuple)):
return self.range_type(value[0], value[1])
return value
def to_python(self, value):
if isinstance(value, str):
# Assume we're deserializing
vals = json.loads(value)
for end in ('lower', 'upper'):
if end in vals:
vals[end] = self.base_field.to_python(vals[end])
value = self.range_type(**vals)
elif isinstance(value, (list, tuple)):
value = self.range_type(value[0], value[1])
return value
def set_attributes_from_name(self, name):
super().set_attributes_from_name(name)
self.base_field.set_attributes_from_name(name)
def value_to_string(self, obj):
value = self.value_from_object(obj)
if value is None:
return None
if value.isempty:
return json.dumps({"empty": True})
base_field = self.base_field
result = {"bounds": value._bounds}
for end in ('lower', 'upper'):
val = getattr(value, end)
if val is None:
result[end] = None
else:
obj = AttributeSetter(base_field.attname, val)
result[end] = base_field.value_to_string(obj)
return json.dumps(result)
def formfield(self, **kwargs):
kwargs.setdefault('form_class', self.form_field)
return super().formfield(**kwargs)
class IntegerRangeField(RangeField):
base_field = models.IntegerField
range_type = NumericRange
form_field = forms.IntegerRangeField
def db_type(self, connection):
return 'int4range'
class BigIntegerRangeField(RangeField):
base_field = models.BigIntegerField
range_type = NumericRange
form_field = forms.IntegerRangeField
def db_type(self, connection):
return 'int8range'
class DecimalRangeField(RangeField):
base_field = models.DecimalField
range_type = NumericRange
form_field = forms.DecimalRangeField
def db_type(self, connection):
return 'numrange'
class FloatRangeField(RangeField):
system_check_deprecated_details = {
'msg': (
'FloatRangeField is deprecated and will be removed in Django 3.1.'
),
'hint': 'Use DecimalRangeField instead.',
'id': 'fields.W902',
}
base_field = models.FloatField
range_type = NumericRange
form_field = forms.FloatRangeField
def db_type(self, connection):
return 'numrange'
class DateTimeRangeField(RangeField):
base_field = models.DateTimeField
range_type = DateTimeTZRange
form_field = forms.DateTimeRangeField
def db_type(self, connection):
return 'tstzrange'
class DateRangeField(RangeField):
base_field = models.DateField
range_type = DateRange
form_field = forms.DateRangeField
def db_type(self, connection):
return 'daterange'
RangeField.register_lookup(lookups.DataContains)
RangeField.register_lookup(lookups.ContainedBy)
RangeField.register_lookup(lookups.Overlap)
class DateTimeRangeContains(models.Lookup):
"""
Lookup for Date/DateTimeRange containment to cast the rhs to the correct
type.
"""
lookup_name = 'contains'
def process_rhs(self, compiler, connection):
# Transform rhs value for db lookup.
if isinstance(self.rhs, datetime.date):
output_field = models.DateTimeField() if isinstance(self.rhs, datetime.datetime) else models.DateField()
value = models.Value(self.rhs, output_field=output_field)
self.rhs = value.resolve_expression(compiler.query)
return super().process_rhs(compiler, connection)
def as_sql(self, compiler, connection):
lhs, lhs_params = self.process_lhs(compiler, connection)
rhs, rhs_params = self.process_rhs(compiler, connection)
params = lhs_params + rhs_params
# Cast the rhs if needed.
cast_sql = ''
if isinstance(self.rhs, models.Expression) and self.rhs._output_field_or_none:
cast_internal_type = self.lhs.output_field.base_field.get_internal_type()
cast_sql = '::{}'.format(connection.data_types.get(cast_internal_type))
return '%s @> %s%s' % (lhs, rhs, cast_sql), params
DateRangeField.register_lookup(DateTimeRangeContains)
DateTimeRangeField.register_lookup(DateTimeRangeContains)
class RangeContainedBy(models.Lookup):
lookup_name = 'contained_by'
type_mapping = {
'integer': 'int4range',
'bigint': 'int8range',
'double precision': 'numrange',
'date': 'daterange',
'timestamp with time zone': 'tstzrange',
}
def as_sql(self, qn, connection):
field = self.lhs.output_field
if isinstance(field, models.FloatField):
sql = '%s::numeric <@ %s::{}'.format(self.type_mapping[field.db_type(connection)])
else:
sql = '%s <@ %s::{}'.format(self.type_mapping[field.db_type(connection)])
lhs, lhs_params = self.process_lhs(qn, connection)
rhs, rhs_params = self.process_rhs(qn, connection)
params = lhs_params + rhs_params
return sql % (lhs, rhs), params
def get_prep_lookup(self):
return RangeField().get_prep_value(self.rhs)
models.DateField.register_lookup(RangeContainedBy)
models.DateTimeField.register_lookup(RangeContainedBy)
models.IntegerField.register_lookup(RangeContainedBy)
models.BigIntegerField.register_lookup(RangeContainedBy)
models.FloatField.register_lookup(RangeContainedBy)
@RangeField.register_lookup
class FullyLessThan(lookups.PostgresSimpleLookup):
lookup_name = 'fully_lt'
operator = '<<'
@RangeField.register_lookup
class FullGreaterThan(lookups.PostgresSimpleLookup):
lookup_name = 'fully_gt'
operator = '>>'
@RangeField.register_lookup
class NotLessThan(lookups.PostgresSimpleLookup):
lookup_name = 'not_lt'
operator = '&>'
@RangeField.register_lookup
class NotGreaterThan(lookups.PostgresSimpleLookup):
lookup_name = 'not_gt'
operator = '&<'
@RangeField.register_lookup
class AdjacentToLookup(lookups.PostgresSimpleLookup):
lookup_name = 'adjacent_to'
operator = '-|-'
@RangeField.register_lookup
class RangeStartsWith(models.Transform):
lookup_name = 'startswith'
function = 'lower'
@property
def output_field(self):
return self.lhs.output_field.base_field
@RangeField.register_lookup
class RangeEndsWith(models.Transform):
lookup_name = 'endswith'
function = 'upper'
@property
def output_field(self):
return self.lhs.output_field.base_field
@RangeField.register_lookup
class IsEmpty(models.Transform):
lookup_name = 'isempty'
function = 'isempty'
output_field = models.BooleanField()
|
0dcdebba7ada53f05da7cba92bc440c13a3c297b14239a122de97c9e0e191ef9 | import warnings
from psycopg2.extras import DateRange, DateTimeTZRange, NumericRange
from django import forms
from django.core import exceptions
from django.forms.widgets import MultiWidget
from django.utils.deprecation import RemovedInDjango31Warning
from django.utils.translation import gettext_lazy as _
__all__ = [
'BaseRangeField', 'IntegerRangeField', 'DecimalRangeField',
'DateTimeRangeField', 'DateRangeField', 'FloatRangeField', 'RangeWidget',
]
class BaseRangeField(forms.MultiValueField):
default_error_messages = {
'invalid': _('Enter two valid values.'),
'bound_ordering': _('The start of the range must not exceed the end of the range.'),
}
def __init__(self, **kwargs):
if 'widget' not in kwargs:
kwargs['widget'] = RangeWidget(self.base_field.widget)
if 'fields' not in kwargs:
kwargs['fields'] = [self.base_field(required=False), self.base_field(required=False)]
kwargs.setdefault('required', False)
kwargs.setdefault('require_all_fields', False)
super().__init__(**kwargs)
def prepare_value(self, value):
lower_base, upper_base = self.fields
if isinstance(value, self.range_type):
return [
lower_base.prepare_value(value.lower),
upper_base.prepare_value(value.upper),
]
if value is None:
return [
lower_base.prepare_value(None),
upper_base.prepare_value(None),
]
return value
def compress(self, values):
if not values:
return None
lower, upper = values
if lower is not None and upper is not None and lower > upper:
raise exceptions.ValidationError(
self.error_messages['bound_ordering'],
code='bound_ordering',
)
try:
range_value = self.range_type(lower, upper)
except TypeError:
raise exceptions.ValidationError(
self.error_messages['invalid'],
code='invalid',
)
else:
return range_value
class IntegerRangeField(BaseRangeField):
default_error_messages = {'invalid': _('Enter two whole numbers.')}
base_field = forms.IntegerField
range_type = NumericRange
class DecimalRangeField(BaseRangeField):
default_error_messages = {'invalid': _('Enter two numbers.')}
base_field = forms.DecimalField
range_type = NumericRange
class FloatRangeField(DecimalRangeField):
base_field = forms.FloatField
def __init__(self, **kwargs):
warnings.warn(
'FloatRangeField is deprecated in favor of DecimalRangeField.',
RemovedInDjango31Warning, stacklevel=2,
)
super().__init__(**kwargs)
class DateTimeRangeField(BaseRangeField):
default_error_messages = {'invalid': _('Enter two valid date/times.')}
base_field = forms.DateTimeField
range_type = DateTimeTZRange
class DateRangeField(BaseRangeField):
default_error_messages = {'invalid': _('Enter two valid dates.')}
base_field = forms.DateField
range_type = DateRange
class RangeWidget(MultiWidget):
def __init__(self, base_widget, attrs=None):
widgets = (base_widget, base_widget)
super().__init__(widgets, attrs)
def decompress(self, value):
if value:
return (value.lower, value.upper)
return (None, None)
|
c3a1a2c6a87f66d189c24a43d53b582ce00a112a65ced2e523a6eb02dfc509ca | from django.contrib.postgres.fields import ArrayField, JSONField
from django.db.models.aggregates import Aggregate
from .mixins import OrderableAggMixin
__all__ = [
'ArrayAgg', 'BitAnd', 'BitOr', 'BoolAnd', 'BoolOr', 'JSONBAgg', 'StringAgg',
]
class ArrayAgg(OrderableAggMixin, Aggregate):
function = 'ARRAY_AGG'
template = '%(function)s(%(distinct)s%(expressions)s %(ordering)s)'
allow_distinct = True
@property
def output_field(self):
return ArrayField(self.source_expressions[0].output_field)
def convert_value(self, value, expression, connection):
if not value:
return []
return value
class BitAnd(Aggregate):
function = 'BIT_AND'
class BitOr(Aggregate):
function = 'BIT_OR'
class BoolAnd(Aggregate):
function = 'BOOL_AND'
class BoolOr(Aggregate):
function = 'BOOL_OR'
class JSONBAgg(Aggregate):
function = 'JSONB_AGG'
output_field = JSONField()
def convert_value(self, value, expression, connection):
if not value:
return []
return value
class StringAgg(OrderableAggMixin, Aggregate):
function = 'STRING_AGG'
template = "%(function)s(%(distinct)s%(expressions)s, '%(delimiter)s'%(ordering)s)"
allow_distinct = True
def __init__(self, expression, delimiter, **extra):
super().__init__(expression, delimiter=delimiter, **extra)
def convert_value(self, value, expression, connection):
if not value:
return ''
return value
|
481263c5b729142191696643724db5b6cf90f7cb957cf131804d54e4923512a8 | from django.db.models.expressions import F, OrderBy
class OrderableAggMixin:
def __init__(self, expression, ordering=(), **extra):
if not isinstance(ordering, (list, tuple)):
ordering = [ordering]
ordering = ordering or []
# Transform minus sign prefixed strings into an OrderBy() expression.
ordering = (
(OrderBy(F(o[1:]), descending=True) if isinstance(o, str) and o[0] == '-' else o)
for o in ordering
)
super().__init__(expression, **extra)
self.ordering = self._parse_expressions(*ordering)
def resolve_expression(self, *args, **kwargs):
self.ordering = [expr.resolve_expression(*args, **kwargs) for expr in self.ordering]
return super().resolve_expression(*args, **kwargs)
def as_sql(self, compiler, connection):
if self.ordering:
ordering_params = []
ordering_expr_sql = []
for expr in self.ordering:
expr_sql, expr_params = expr.as_sql(compiler, connection)
ordering_expr_sql.append(expr_sql)
ordering_params.extend(expr_params)
sql, sql_params = super().as_sql(compiler, connection, ordering=(
'ORDER BY ' + ', '.join(ordering_expr_sql)
))
return sql, sql_params + ordering_params
return super().as_sql(compiler, connection, ordering='')
def set_source_expressions(self, exprs):
# Extract the ordering expressions because ORDER BY clause is handled
# in a custom way.
self.ordering = exprs[self._get_ordering_expressions_index():]
return super().set_source_expressions(exprs[:self._get_ordering_expressions_index()])
def get_source_expressions(self):
return self.source_expressions + self.ordering
def get_source_fields(self):
# Filter out fields contributed by the ordering expressions as
# these should not be used to determine which the return type of the
# expression.
return [
e._output_field_or_none
for e in self.get_source_expressions()[:self._get_ordering_expressions_index()]
]
def _get_ordering_expressions_index(self):
"""Return the index at which the ordering expressions start."""
source_expressions = self.get_source_expressions()
return len(source_expressions) - len(self.ordering)
|
250d9ca949d3a28a832a56792dc5d00db42577dc50982deea79ff00969f52c58 | from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('auth', '0009_alter_user_last_name_max_length'),
]
operations = [
migrations.AlterField(
model_name='group',
name='name',
field=models.CharField(max_length=150, unique=True, verbose_name='name'),
),
]
|
feb6339968bb23802157bc7ac727ad609317a73e41a3c9a38369ac9992cdecd4 | import sys
from django.core.management.color import color_style
from django.db import migrations, transaction
from django.db.models import Q
from django.db.utils import IntegrityError
WARNING = """
A problem arose migrating proxy model permissions for {old} to {new}.
Permission(s) for {new} already existed.
Codenames Q: {query}
Ensure to audit ALL permissions for {old} and {new}.
"""
def update_proxy_model_permissions(apps, schema_editor, reverse=False):
"""
Update the content_type of proxy model permissions to use the ContentType
of the proxy model.
"""
style = color_style()
Permission = apps.get_model('auth', 'Permission')
ContentType = apps.get_model('contenttypes', 'ContentType')
for Model in apps.get_models():
opts = Model._meta
if not opts.proxy:
continue
proxy_default_permissions_codenames = [
'%s_%s' % (action, opts.model_name)
for action in opts.default_permissions
]
permissions_query = Q(codename__in=proxy_default_permissions_codenames)
for codename, name in opts.permissions:
permissions_query = permissions_query | Q(codename=codename, name=name)
concrete_content_type = ContentType.objects.get_for_model(Model, for_concrete_model=True)
proxy_content_type = ContentType.objects.get_for_model(Model, for_concrete_model=False)
old_content_type = proxy_content_type if reverse else concrete_content_type
new_content_type = concrete_content_type if reverse else proxy_content_type
try:
with transaction.atomic():
Permission.objects.filter(
permissions_query,
content_type=old_content_type,
).update(content_type=new_content_type)
except IntegrityError:
old = '{}_{}'.format(old_content_type.app_label, old_content_type.model)
new = '{}_{}'.format(new_content_type.app_label, new_content_type.model)
sys.stdout.write(style.WARNING(WARNING.format(old=old, new=new, query=permissions_query)))
def revert_proxy_model_permissions(apps, schema_editor):
"""
Update the content_type of proxy model permissions to use the ContentType
of the concrete model.
"""
update_proxy_model_permissions(apps, schema_editor, reverse=True)
class Migration(migrations.Migration):
dependencies = [
('auth', '0010_alter_group_name_max_length'),
('contenttypes', '0002_remove_content_type_name'),
]
operations = [
migrations.RunPython(update_proxy_model_permissions, revert_proxy_model_permissions),
]
|
f439393f11eb7e7a583a5a0f7350a523b28c2ca219b4b07e78a1a177771fb66f | """
Creates permissions for all installed apps that need permissions.
"""
import getpass
import unicodedata
from django.apps import apps as global_apps
from django.contrib.auth import get_permission_codename
from django.contrib.contenttypes.management import create_contenttypes
from django.core import exceptions
from django.db import DEFAULT_DB_ALIAS, router
def _get_all_permissions(opts):
"""
Return (codename, name) for all permissions in the given opts.
"""
return [*_get_builtin_permissions(opts), *opts.permissions]
def _get_builtin_permissions(opts):
"""
Return (codename, name) for all autogenerated permissions.
By default, this is ('add', 'change', 'delete', 'view')
"""
perms = []
for action in opts.default_permissions:
perms.append((
get_permission_codename(action, opts),
'Can %s %s' % (action, opts.verbose_name_raw)
))
return perms
def create_permissions(app_config, verbosity=2, interactive=True, using=DEFAULT_DB_ALIAS, apps=global_apps, **kwargs):
if not app_config.models_module:
return
# Ensure that contenttypes are created for this app. Needed if
# 'django.contrib.auth' is in INSTALLED_APPS before
# 'django.contrib.contenttypes'.
create_contenttypes(app_config, verbosity=verbosity, interactive=interactive, using=using, apps=apps, **kwargs)
app_label = app_config.label
try:
app_config = apps.get_app_config(app_label)
ContentType = apps.get_model('contenttypes', 'ContentType')
Permission = apps.get_model('auth', 'Permission')
except LookupError:
return
if not router.allow_migrate_model(using, Permission):
return
# This will hold the permissions we're looking for as
# (content_type, (codename, name))
searched_perms = []
# The codenames and ctypes that should exist.
ctypes = set()
for klass in app_config.get_models():
# Force looking up the content types in the current database
# before creating foreign keys to them.
ctype = ContentType.objects.db_manager(using).get_for_model(klass, for_concrete_model=False)
ctypes.add(ctype)
for perm in _get_all_permissions(klass._meta):
searched_perms.append((ctype, perm))
# Find all the Permissions that have a content_type for a model we're
# looking for. We don't need to check for codenames since we already have
# a list of the ones we're going to create.
all_perms = set(Permission.objects.using(using).filter(
content_type__in=ctypes,
).values_list(
"content_type", "codename"
))
perms = [
Permission(codename=codename, name=name, content_type=ct)
for ct, (codename, name) in searched_perms
if (ct.pk, codename) not in all_perms
]
Permission.objects.using(using).bulk_create(perms)
if verbosity >= 2:
for perm in perms:
print("Adding permission '%s'" % perm)
def get_system_username():
"""
Return the current system user's username, or an empty string if the
username could not be determined.
"""
try:
result = getpass.getuser()
except (ImportError, KeyError):
# KeyError will be raised by os.getpwuid() (called by getuser())
# if there is no corresponding entry in the /etc/passwd file
# (a very restricted chroot environment, for example).
return ''
return result
def get_default_username(check_db=True):
"""
Try to determine the current system user's username to use as a default.
:param check_db: If ``True``, requires that the username does not match an
existing ``auth.User`` (otherwise returns an empty string).
:returns: The username, or an empty string if no username can be
determined.
"""
# This file is used in apps.py, it should not trigger models import.
from django.contrib.auth import models as auth_app
# If the User model has been swapped out, we can't make any assumptions
# about the default user name.
if auth_app.User._meta.swapped:
return ''
default_username = get_system_username()
try:
default_username = (
unicodedata.normalize('NFKD', default_username)
.encode('ascii', 'ignore').decode('ascii')
.replace(' ', '').lower()
)
except UnicodeDecodeError:
return ''
# Run the username validator
try:
auth_app.User._meta.get_field('username').run_validators(default_username)
except exceptions.ValidationError:
return ''
# Don't return the default username if it is already taken.
if check_db and default_username:
try:
auth_app.User._default_manager.get(username=default_username)
except auth_app.User.DoesNotExist:
pass
else:
return ''
return default_username
|
6d35ca54c7b3cb0b27d4a036315c8359e1ef4cd6b62abc08c67da8947ee8ff92 | from django import db
from django.contrib import auth
UserModel = auth.get_user_model()
def check_password(environ, username, password):
"""
Authenticate against Django's auth database.
mod_wsgi docs specify None, True, False as return value depending
on whether the user exists and authenticates.
"""
# db connection state is managed similarly to the wsgi handler
# as mod_wsgi may call these functions outside of a request/response cycle
db.reset_queries()
try:
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
return None
if not user.is_active:
return None
return user.check_password(password)
finally:
db.close_old_connections()
def groups_for_user(environ, username):
"""
Authorize a user based on groups
"""
db.reset_queries()
try:
try:
user = UserModel._default_manager.get_by_natural_key(username)
except UserModel.DoesNotExist:
return []
if not user.is_active:
return []
return [group.name.encode() for group in user.groups.all()]
finally:
db.close_old_connections()
|
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