django: data migrate permissions

Question

I have a bunch of new permissions which I need to migrate. I tried doing it through data migration but complains about ContentType not being available.

Doing quick research I found out that ContentType table is populated after all the migrations applied.

I even tried using update_all_contenttypes() from from django.contrib.contenttypes.management import update_all_contenttypes which causes migration to load data which is not consistent to the fixture.

What is the best way to migrate permission data in Django?

Answer 1

There are 2 ways to solve this:

1) The ugly way:

Run manage.py migrate auth before your wanted migration

2) Recommended way:

from django.contrib.auth.management import create_permissions

def add_permissions(apps, schema_editor):
    apps.models_module = True

    create_permissions(apps, verbosity=0)
    apps.models_module = None

    # rest of code here....