#26686: django.core.checks.model_checks _check_lazy_references raises TypeError
with NoneType model_key
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Reporter: bretth | Owner: nobody
Type: Bug | Status: new
Component: Core (System checks) | Version: 1.10
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Steps for reproduction
Create poll app or any model
inherit model from django-model-utils model_utils.models.TimeStampedModel
./manage.py makemigrations
In the model import process (None, 'statusmodel') erroneously gets added
to the django.core.registry.App._pending_operations. StatusModel is a
model in model_utils.models but is not imported into the poll app.
django.core.checks.model_checks._check_lazy_references iterates over the
model_key in _pending_operations but can't handle a model_key of NoneType
so raises the TypeError.
Being a defaultdict _pending_operations seems the point of weakness here.
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Ticket URL: <https://code.djangoproject.com/ticket/26686>
Django <https://code.djangoproject.com/>
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