#24506: Proxying User model creates an invalid migration
-------------------------------------+-------------------------------------
Reporter: tinloaf | Owner:
| marcofucci
Type: Bug | Status: new
Component: Database layer | Version: 1.8
(models, ORM) |
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
-------------------------------------+-------------------------------------
Comment (by Ernest0x):
The traceback occurs when rendering model states:
{{{
Operations to perform:
Synchronize unmigrated apps: rest_framework, django_python3_ldap,
debug_toolbar, messages, staticfiles
Apply all migrations: contenttypes, users, issues, ...
Synchronizing apps without migrations:
Creating tables...
Running deferred SQL...
Installing custom SQL...
Running migrations:
Rendering model states...Traceback (most recent call last):
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/apps/config.py", line 159, in get_model
return self.models[model_name.lower()]
KeyError: 'group'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/db/migrations/state.py", line 238, in __init__
model = self.get_model(lookup_model[0], lookup_model[1])
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/apps/registry.py", line 202, in get_model
return self.get_app_config(app_label).get_model(model_name.lower())
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/apps/config.py", line 162, in get_model
"App '%s' doesn't have a '%s' model." % (self.label, model_name))
LookupError: App 'users' doesn't have a 'group' model.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/core/management/__init__.py", line 338, in
execute_from_command_line
utility.execute()
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/core/management/commands/migrate.py", line 221, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/db/migrations/executor.py", line 100, in migrate
state.apps # Render all real_apps -- performance critical
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/utils/functional.py", line 60, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/db/migrations/state.py", line 166, in apps
return StateApps(self.real_apps, self.models)
File "/path/to/virtualenv/lib/python3.4/site-
packages/django/db/migrations/state.py", line 248, in __init__
raise ValueError(msg.format(field=operations[0][1],
model=lookup_model))
ValueError: Lookup failed for model referenced by field
issues.SomeModel.group: users.Group
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/24506#comment:6>
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