#22872: Backwards incompatible change: Can't proxy User model: RuntimeError: App
registry isn't ready yet.
-------------------------------------+-------------------------------------
Reporter: jdufresne | Owner: nobody
Type: | Status: new
Cleanup/optimization | Version:
Component: Documentation | 1.7-beta-2
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by wizpig64):
I also have an app that uses a user proxy (also with `class
MyUser(get_user_model()):`), which i'm porting up to 1.7. Looking through
the docs it seemed like using `apps.get_model('app.model')` (equivalent to
`apps.get_model('app', 'model')`) was they way to go about proxying to the
user model:
{{{
from django.apps import apps
from django.conf import settings
class MyUser(apps.get_model(settings.AUTH_USER_MODEL)):
class Meta:
proxy = True
}}}
but this raises "django.core.exceptions.AppRegistryNotReady: Models aren't
loaded yet."
It looks like this can be worked around by using the longer
`apps.get_app_config('app').get_model('model')`. I'm not sure if this is
intended behavior or a bug:
{{{
user_app, user_model = settings.AUTH_USER_MODEL.split('.')
class MyUser(apps.get_app_config(user_app).get_model(user_model)):
...
}}}
Some caveats: this only works if your model is after the base user model
in `INSTALLED_APPS`, and as long as `AUTH_USER_MODEL` only has one dot.
I suppose circumvents the whole point of the new app system, so that plus
the caveats probably makes it a bad idea to use. Rather than the above, I
think a new `get_user_model()` should be made, or a more clear way of
doing this should be documented.
The above stuff was tested on 1.7c2 and the latest stable/1.7.x as of
writing, http://github.com/django/django/commit/0f44d9f9b1. - I also
haven't checked any of the implications of this with migrations.
Thanks
--
Ticket URL: <https://code.djangoproject.com/ticket/22872#comment:5>
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