We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
datetimepicker unique ids
<img width="980" alt="screen shot 2017-06-01 at 15 59 21" src="https://cloud.githubusercontent.com/assets/16354712/26683219/61f8eb4c-46e3-11e7-851b-148bff927bd4.png">


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `apps/contrib/widgets.py`
Content:
```
1 import datetime
2 from itertools import chain
3 
4 import django_filters
5 from django.contrib.staticfiles.storage import staticfiles_storage
6 from django.db.models.fields import BLANK_CHOICE_DASH
7 from django.forms import widgets as form_widgets
8 from django.forms.widgets import flatatt
9 from django.template.loader import render_to_string
10 from django.utils import formats
11 from django.utils.timezone import localtime
12 from django.utils.translation import ugettext as _
13 
14 
15 class DropdownLinkWidget(django_filters.widgets.LinkWidget):
16     label = None
17     right = False
18     template = 'meinberlin_contrib/widgets/dropdown_link.html'
19 
20     def get_option_label(self, value, choices=()):
21         option_label = BLANK_CHOICE_DASH[0][1]
22 
23         for v, label in chain(self.choices, choices):
24             if str(v) == value:
25                 option_label = label
26                 break
27 
28         if option_label == BLANK_CHOICE_DASH[0][1]:
29             option_label = _('All')
30 
31         return option_label
32 
33     def render(self, name, value, attrs=None, choices=()):
34         all_choices = list(chain(self.choices, choices))
35 
36         if len(all_choices) <= 1:
37             return ''
38 
39         if value is None:
40             value = all_choices[0][0]
41 
42         _id = attrs.pop('id')
43         final_attrs = flatatt(self.build_attrs(attrs))
44         value_label = self.get_option_label(value, choices=choices)
45 
46         options = super().render(name, value, attrs={
47             'class': 'dropdown-menu',
48             'aria-labelledby': _id,
49         }, choices=choices)
50 
51         return render_to_string(self.template, {
52             'options': options,
53             'id': _id,
54             'attrs': final_attrs,
55             'value_label': value_label,
56             'label': self.label,
57             'right': self.right,
58         })
59 
60 
61 class DateTimeInput(form_widgets.SplitDateTimeWidget):
62     class Media:
63         js = (
64             staticfiles_storage.url('datepicker.js'),
65         )
66         css = {'all': [
67             staticfiles_storage.url('datepicker.css'),
68         ]}
69 
70     def render(self, name, value, attrs=None):
71         date_attrs = self.build_attrs(attrs)
72         date_attrs.update({
73             'class': 'datepicker',
74             'placeholder': formats.localize_input(datetime.date.today())
75         })
76         time_attrs = self.build_attrs(attrs)
77         time_attrs.update({
78             'class': 'timepicker',
79             'placeholder': '00:00',
80         })
81 
82         if isinstance(value, datetime.datetime):
83             value = localtime(value)
84             date = value.date()
85             time = value.time()
86         else:
87             # value's just a list in case of an error
88             date = value[0] if value else None
89             time = value[1] if value else '00:00'
90 
91         return render_to_string('datetime_input.html', {
92             'date': self.widgets[0].render(
93                 name + '_0',
94                 date,
95                 date_attrs
96             ),
97             'time': self.widgets[1].render(
98                 name + '_1',
99                 time,
100                 time_attrs
101             )
102         })
103
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/apps/contrib/widgets.py b/apps/contrib/widgets.py
--- a/apps/contrib/widgets.py
+++ b/apps/contrib/widgets.py
@@ -71,12 +71,14 @@
         date_attrs = self.build_attrs(attrs)
         date_attrs.update({
             'class': 'datepicker',
-            'placeholder': formats.localize_input(datetime.date.today())
+            'placeholder': formats.localize_input(datetime.date.today()),
+            'id': name + '_date'
         })
         time_attrs = self.build_attrs(attrs)
         time_attrs.update({
             'class': 'timepicker',
             'placeholder': '00:00',
+            'id': name + '_time'
         })
 
         if isinstance(value, datetime.datetime):

{"golden_diff": "diff --git a/apps/contrib/widgets.py b/apps/contrib/widgets.py\n--- a/apps/contrib/widgets.py\n+++ b/apps/contrib/widgets.py\n@@ -71,12 +71,14 @@\n         date_attrs = self.build_attrs(attrs)\n         date_attrs.update({\n             'class': 'datepicker',\n-            'placeholder': formats.localize_input(datetime.date.today())\n+            'placeholder': formats.localize_input(datetime.date.today()),\n+            'id': name + '_date'\n         })\n         time_attrs = self.build_attrs(attrs)\n         time_attrs.update({\n             'class': 'timepicker',\n             'placeholder': '00:00',\n+            'id': name + '_time'\n         })\n \n         if isinstance(value, datetime.datetime):\n", "issue": "datetimepicker unique ids\n<img width=\"980\" alt=\"screen shot 2017-06-01 at 15 59 21\" src=\"https://cloud.githubusercontent.com/assets/16354712/26683219/61f8eb4c-46e3-11e7-851b-148bff927bd4.png\">\r\n\n", "before_files": [{"content": "import datetime\nfrom itertools import chain\n\nimport django_filters\nfrom django.contrib.staticfiles.storage import staticfiles_storage\nfrom django.db.models.fields import BLANK_CHOICE_DASH\nfrom django.forms import widgets as form_widgets\nfrom django.forms.widgets import flatatt\nfrom django.template.loader import render_to_string\nfrom django.utils import formats\nfrom django.utils.timezone import localtime\nfrom django.utils.translation import ugettext as _\n\n\nclass DropdownLinkWidget(django_filters.widgets.LinkWidget):\n    label = None\n    right = False\n    template = 'meinberlin_contrib/widgets/dropdown_link.html'\n\n    def get_option_label(self, value, choices=()):\n        option_label = BLANK_CHOICE_DASH[0][1]\n\n        for v, label in chain(self.choices, choices):\n            if str(v) == value:\n                option_label = label\n                break\n\n        if option_label == BLANK_CHOICE_DASH[0][1]:\n            option_label = _('All')\n\n        return option_label\n\n    def render(self, name, value, attrs=None, choices=()):\n        all_choices = list(chain(self.choices, choices))\n\n        if len(all_choices) <= 1:\n            return ''\n\n        if value is None:\n            value = all_choices[0][0]\n\n        _id = attrs.pop('id')\n        final_attrs = flatatt(self.build_attrs(attrs))\n        value_label = self.get_option_label(value, choices=choices)\n\n        options = super().render(name, value, attrs={\n            'class': 'dropdown-menu',\n            'aria-labelledby': _id,\n        }, choices=choices)\n\n        return render_to_string(self.template, {\n            'options': options,\n            'id': _id,\n            'attrs': final_attrs,\n            'value_label': value_label,\n            'label': self.label,\n            'right': self.right,\n        })\n\n\nclass DateTimeInput(form_widgets.SplitDateTimeWidget):\n    class Media:\n        js = (\n            staticfiles_storage.url('datepicker.js'),\n        )\n        css = {'all': [\n            staticfiles_storage.url('datepicker.css'),\n        ]}\n\n    def render(self, name, value, attrs=None):\n        date_attrs = self.build_attrs(attrs)\n        date_attrs.update({\n            'class': 'datepicker',\n            'placeholder': formats.localize_input(datetime.date.today())\n        })\n        time_attrs = self.build_attrs(attrs)\n        time_attrs.update({\n            'class': 'timepicker',\n            'placeholder': '00:00',\n        })\n\n        if isinstance(value, datetime.datetime):\n            value = localtime(value)\n            date = value.date()\n            time = value.time()\n        else:\n            # value's just a list in case of an error\n            date = value[0] if value else None\n            time = value[1] if value else '00:00'\n\n        return render_to_string('datetime_input.html', {\n            'date': self.widgets[0].render(\n                name + '_0',\n                date,\n                date_attrs\n            ),\n            'time': self.widgets[1].render(\n                name + '_1',\n                time,\n                time_attrs\n            )\n        })\n", "path": "apps/contrib/widgets.py"}], "after_files": [{"content": "import datetime\nfrom itertools import chain\n\nimport django_filters\nfrom django.contrib.staticfiles.storage import staticfiles_storage\nfrom django.db.models.fields import BLANK_CHOICE_DASH\nfrom django.forms import widgets as form_widgets\nfrom django.forms.widgets import flatatt\nfrom django.template.loader import render_to_string\nfrom django.utils import formats\nfrom django.utils.timezone import localtime\nfrom django.utils.translation import ugettext as _\n\n\nclass DropdownLinkWidget(django_filters.widgets.LinkWidget):\n    label = None\n    right = False\n    template = 'meinberlin_contrib/widgets/dropdown_link.html'\n\n    def get_option_label(self, value, choices=()):\n        option_label = BLANK_CHOICE_DASH[0][1]\n\n        for v, label in chain(self.choices, choices):\n            if str(v) == value:\n                option_label = label\n                break\n\n        if option_label == BLANK_CHOICE_DASH[0][1]:\n            option_label = _('All')\n\n        return option_label\n\n    def render(self, name, value, attrs=None, choices=()):\n        all_choices = list(chain(self.choices, choices))\n\n        if len(all_choices) <= 1:\n            return ''\n\n        if value is None:\n            value = all_choices[0][0]\n\n        _id = attrs.pop('id')\n        final_attrs = flatatt(self.build_attrs(attrs))\n        value_label = self.get_option_label(value, choices=choices)\n\n        options = super().render(name, value, attrs={\n            'class': 'dropdown-menu',\n            'aria-labelledby': _id,\n        }, choices=choices)\n\n        return render_to_string(self.template, {\n            'options': options,\n            'id': _id,\n            'attrs': final_attrs,\n            'value_label': value_label,\n            'label': self.label,\n            'right': self.right,\n        })\n\n\nclass DateTimeInput(form_widgets.SplitDateTimeWidget):\n    class Media:\n        js = (\n            staticfiles_storage.url('datepicker.js'),\n        )\n        css = {'all': [\n            staticfiles_storage.url('datepicker.css'),\n        ]}\n\n    def render(self, name, value, attrs=None):\n        date_attrs = self.build_attrs(attrs)\n        date_attrs.update({\n            'class': 'datepicker',\n            'placeholder': formats.localize_input(datetime.date.today()),\n            'id': name + '_date'\n        })\n        time_attrs = self.build_attrs(attrs)\n        time_attrs.update({\n            'class': 'timepicker',\n            'placeholder': '00:00',\n            'id': name + '_time'\n        })\n\n        if isinstance(value, datetime.datetime):\n            value = localtime(value)\n            date = value.date()\n            time = value.time()\n        else:\n            # value's just a list in case of an error\n            date = value[0] if value else None\n            time = value[1] if value else '00:00'\n\n        return render_to_string('datetime_input.html', {\n            'date': self.widgets[0].render(\n                name + '_0',\n                date,\n                date_attrs\n            ),\n            'time': self.widgets[1].render(\n                name + '_1',\n                time,\n                time_attrs\n            )\n        })\n", "path": "apps/contrib/widgets.py"}]}