#25966: Implement get_user_model() that can be used in models.py
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Reporter: knbk | Owner: nobody
Type: New feature | Status: new
Component: contrib.auth | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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`get_user_model()` can only be used when the models for the user app have
been loaded into the registry. This can be problematic when you need to
subclass the user model, and you need the actual model in your own
models.py file. If you want to support swappable models, your app must be
after the user app in `INSTALLED_APPS`.
For reference, this use-case can be found in django-cms:
[https://github.com/divio/django-
cms/blob/develop/cms/models/permissionmodels.py#L16]
Lets implement an alternative to `get_user_model()` that can be used after
the app registry is populated, but before the user model is loaded. This
can work by actually importing the user model if it's not in the registry
yet:
{{{
from importlib import import_module
from django.apps import apps
from django.conf import settings
from django.utils.module_loading import module_has_submodule
def get_user_model_safe():
"""
Get the user model before it is loaded, but after the app registry is
populated.
"""
app_label, model_name = settings.AUTH_USER_MODEL.split('.')
app_config = apps.get_app_config(app_label)
models_module = import_module("%s.%s" % (app_config.name, "models"))
return getattr(models_module, model_name)
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/25966>
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