[Django] #33971: admindocs doesn't work if it appears before the admin in INSTALLED_APPS

[Django]

#33971: admindocs doesn't work if it appears before the admin in INSTALLED_APPS
---------------------------------------------+------------------------
Reporter: Tom Carrick | Owner: nobody
Type: Bug | Status: new
Component: contrib.admindocs | Version: dev
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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This seems to be different from
https://code.djangoproject.com/ticket/32150 as it's about the ordering of
installed apps, not urls.

It also seems to be a regression: this works fine in 4.0 but not in 4.1 /
main.

This does not work, but if you reverse the order it works fine:

{{{
#!python
INSTALLED_APPS = [
...
"django.contrib.admindocs",
"django.contrib.admin",
]
}}}

With the error:

{{{
Environment:

Request Method: GET
Request URL: http://localhost:8000/admin/

Django Version: 4.2.dev20220901073912
Python Version: 3.10.0
Installed Applications:
['django.contrib.admindocs',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']

Traceback (most recent call last):
File "/Users/tom/work/oss/django/django/core/handlers/exception.py",
line 55, in inner
response = get_response(request)
File "/Users/tom/work/oss/django/django/core/handlers/base.py", line
197, in _get_response
response = wrapped_callback(request, *callback_args,
**callback_kwargs)
File "/Users/tom/work/oss/django/django/contrib/admin/sites.py", line
261, in wrapper
return self.admin_view(view, cacheable)(*args, **kwargs)
File "/Users/tom/work/oss/django/django/utils/decorators.py", line 133,
in _wrapper_view
response = view_func(request, *args, **kwargs)
File "/Users/tom/work/oss/django/django/views/decorators/cache.py", line
62, in _wrapper_view_func
response = view_func(request, *args, **kwargs)
File "/Users/tom/work/oss/django/django/contrib/admin/sites.py", line
242, in inner
return view(request, *args, **kwargs)
File "/Users/tom/work/oss/django/django/contrib/admin/sites.py", line
552, in index
app_list = self.get_app_list(request)
File "/Users/tom/work/oss/django/django/contrib/admin/sites.py", line
536, in get_app_list
app_dict = self._build_app_dict(request, app_label)
File "/Users/tom/work/oss/django/django/contrib/admin/sites.py", line
520, in _build_app_dict
"app_url": reverse(
File "/Users/tom/work/oss/django/django/urls/base.py", line 88, in
reverse
return resolver._reverse_with_prefix(view, prefix, *args, **kwargs)
File "/Users/tom/work/oss/django/django/urls/resolvers.py", line 803, in
_reverse_with_prefix
raise NoReverseMatch(msg)

Exception Type: NoReverseMatch at /admin/
Exception Value: Reverse for 'app_list' not found. 'app_list' is not a
valid view function or pattern name.
}}}

--
Ticket URL: <https://code.djangoproject.com/ticket/33971>
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