#32833: ContentType.objects.get_for_models() in migrations does not works for
multiple models
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Reporter: Heraldo Lucena | Owner: nobody
Type: Bug | Status: new
Component: contrib.contenttypes | Version: 3.1
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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I am trying to use migrations to create default groups, I tried to run the
following procedure with `migrations.RunPython()`
{{{
def create_normal_users_group(apps, *args):
auth = SimpleNamespace(**apps.all_models['auth'])
myapp = SimpleNamespace(**apps.all_models['myapp'])
ContentType = apps.get_model('contenttypes', 'ContentType')
group = auth.group.objects.create(name='Normal Users')
contenttypes = ContentType.objects.get_for_models(myapp.user,
myapp.proxy) # there are more models...
# ...
}}}
but it raises `AttributeError`
{{{
File "/home/user/projects/myapp/.venv/lib/python3.8/site-
packages/django/contrib/contenttypes/models.py", line 89, in
get_for_models
opts_models = needed_opts.pop(ct.model_class()._meta, [])
AttributeError: 'ContentType' object has no attribute 'model_class'
}}}
it works when I pass a single model to
`ContentType.objects.get_for_models()`, but `get_for_models()` is supposed
to work with multiple models.
--
Ticket URL: <https://code.djangoproject.com/ticket/32833>
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