[FIXED] how to generate builtin model permissions for non-managed models?

Issue

I have model like this:

class Venue(models.Model):
    name = models.CharField(max_length=255)

    class Meta:
        managed = False
        db_table = 'venue'
        permissions = [
            ('change_venue', 'Can change venue'),
        ]

It is not managed because it already exists in the database (which was created before django project).

I want to use django's builtin model permissions, but they are not created by default. I tried to add them by changing Meta.permissions field but got an error: The permission codenamed 'change_venue' clashes with a builtin permission for model 'events.Venue'

What should I do? Just make migration and create permissions manually?

Solution

Fixed by creating permissions in App.ready hook:

from django.apps import AppConfig
from django.contrib.auth.management import create_permissions


class MyAppConfig(AppConfig):
    name = 'myapp'

    def ready(self):
        create_permissions(self)

Don't know if this counts as valid solution tho

Edit 1

Method above didn't work for new database because models "were not ready/create" when app is ready. So I switched to post_migrate signal, and everything was fine.

Edit 2

After some time I have found global problem about why I don't have permissions and content types in the first place: I simply didn't make migrations for un-managed models. With migrations everything is fine.

Answered By - aiven