ContentType matching query does not exist on post_syncdb
contenttype, django, signals, syncdb
Solution
Add this to the beginning of your init function:
from django.contrib.contenttypes.management import update_all_contenttypes
update_all_contenttypes() # make sure all content types exist
Problem
I am trying to add add some data to the database as soon as tables are created, using the `post_syncdb` signal. ``` signals.post_syncdb.connect(init) ``` Then in the init function, I want to set permission, so I use ``` ct = ContentType.objects.get(app_label='news', model='Article') Permission(name='Approve articles', codename='can_approve_article', content_type=ct) ``` But if I drop all the tables and run `syncdb`, I get ``` ... File "...\base\functions\init.py", line 11, in init ct = ContentType.objects.get(app_label='news', model='Article') ... django.contrib.contenttypes.models.DoesNotExist: ContentType matching query does not exist. ``` Some tests I have done: - It works fine if I try this code outside `syncdb`. - It also works fine if I let `syncdb` create all the tables without this code, and then add this code and run syncdb without it having to make any changes. - AND I am pretty sure it used to work, but I changed a lot of things in other places since then, so I don't know where to start. - I get the same error for other models in different apps. - The signal is fired about 10 times, only the first few times throw the error. Thanks a lot for any hints!