Migration fails with Django-1.7.x

[jantoniomartin]

When running python manage.py migrate with Django-1.7.8, an exception is thrown and the migration fails. The relevant part of the traceback is this:

ValueError: Lookup failed for model referenced by field notifications.NoticeSetting.scoping_content_type: contenttypes.ContentType

[jantoniomartin]

Adding ('contenttypes', '__first__') as a dependency to the migration seems to solve this problem, but then a different exception is thrown:

ValueError: Lookup failed for model referenced by field notifications.NoticeSetting.user: auth.User

If I add ('auth', '__first__') as a dependency, then the error is:

django.db.utils.OperationalError: (1005, 'Can\'t create table `app_dev`.`#sql-903_12fd` (errno: 150 "Foreign key constraint is incorrectly formed")')

[jantoniomartin]

I can confirm that this problem is the same with Django-1.7.9.dev20150528142627.

[jantoniomartin]

I have found a workaround for this problem: In the migration 0001_initial.py, add only ('auth', '__first__') as a dependency.

I could send a pull request, but I don't know if manually editing the migration is appropriate.

[nsh87]

Would be great to get this into pypi, I've had to downgrade to 2.0.1 to continue to be able to migrate.

[marcinn]

How about pypi bugfix release?

[paltman]

Pushed 3.0.0 to PyPI. There are some minor changes from 2.1.0 to 3.0.0 but it drops support for Python 2.6 and Django 1.6 so I think it warranted a major release.

[peterfarrell]

We're seeing issues still with 3.0.x on Django 1.7.x. I'm having my teammate comment on the solution shortly.

[mc-funk]

This is still a problem after upgrading to 3.0.0. Adding ('contenttypes', '0001_initial') as a dependency after line 13 in 0001_initial.py is still necessary to proceed without the error. (The file generated by deleting the original 0001_initial.py and running makemigrate in django 1.7.9 also includes that dependency.)

Per @peterfarrell, this pull request for django-cms uses ('contenttypes', 'latest') to address the issue in their code, which eliminates the need for logic to handle the django version:

dependencies = [
     ('cms', '0009_merge'), 
     ('contenttypes', '__latest__'),
]

Until a change is made to address this, this ticket should be re-opened.

[peterfarrell]

+1 on least breakage prone solution to use __latest__ instead of version checking.

[psychok7]

upgraded to version 3.0.0 and i am getting with Django 1.7.9 :

Running migrations:
  Applying notifications.0001_initial...Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 161, in handle
    executor.migrate(targets, plan, fake=options.get("fake", False))
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 68, in migrate
    self.apply_migration(migration, fake=fake)
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 96, in apply_migration
    if self.detect_soft_applied(migration):
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 140, in detect_soft_applied
    apps = project_state.render()
  File "/home/vagrant/.virtualenvs/xxx/local/lib/python2.7/site-packages/django/db/migrations/state.py", line 94, in render
    raise ValueError(msg.format(field=operations[0][1], model=lookup_model))
ValueError: Lookup failed for model referenced by field notifications.NoticeSetting.scoping_content_type: contenttypes.ContentType