Error creating new content types. Please make sure contenttypes is migrated before trying to migrate apps individually

django migration django-south django-1.8
Shubham picture Shubham · Apr 28, 2015 · Viewed 25.2k times · Source

I am trying to migrate from Django 1.6 to Django 1.8. I was using South for managing migrations in Django 1.6. I have successfully created new migration files by python manage.py makemigrations. while running python manage.py migrate --fake-initial, I am getting this error

 Traceback (most recent call last):
  File "manage.py", line 39, in <module>
    execute_from_command_line(sys.argv)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-    packages/django/core/management/__init__.py", line 338, in   execute_from_command_line
    utility.execute()
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-  packages/django/core/management/__init__.py", line 330, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/base.py", line 390, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/base.py", line 441, in execute
    output = self.handle(*args, **options)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 225, in handle
    emit_post_migrate_signal(created_models, self.verbosity, self.interactive, connection.alias)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/sql.py", line 280, in emit_post_migrate_signal
using=db)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 201, in send
response = receiver(signal=self, sender=sender, **named)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/contrib/auth/management/__init__.py", line 82, in create_permissions
    ctype = ContentType.objects.db_manager(using).get_for_model(klass)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/contrib/contenttypes/models.py", line 78, in get_for_model
    "Error creating new content types. Please make sure contenttypes "

One of the migration file 0001_initial.py says:

dependencies = [
    ('auth', '0006_require_contenttypes_0002'),
    ('clients', '0002_auto_20150428_1551'),
    ('players', '0001_initial'),
]

which I guess is particularly the problem. What could be the workaround this problem. Any help will be appreciated.

Answer

gelbander picture gelbander · May 5, 2015

I think this has something to do with "The removal of ContentType.name", according to this. But somehow it doesnt work.

By manually removing the column name from 'django_content_type' table. Eg.

'ALTER TABLE django_content_type DROP COLUMN name'

I was able to apply the migrations. Maybe this can get you a little bit further at least.

Related questions

Backwards migration with Django South

Ok, so this seems like a really silly thing to ask, and I'm sure I'm missing something somewhere. How do you perform a backwards migration using South on Django? So I've tweaked my models, created a migration with schemamigration, run …

Read More
How to reset migrations in Django 1.7

(I know there is a title the same as this, but the question is different). I have managed to get my development machine migrations and production migrations out of sync. I have a Django app which was using South. I …

Read More
Why don't my south migrations work?

First, I create my database. create database mydb; I add "south" to installed Apps. Then, I go to this tutorial: http://south.aeracode.org/docs/tutorial/part1.html The tutorial tells me to do this: $ py manage.py schemamigration wall …

Read More