Adding django admin permissions in a migration: Permission matching query does not exist
In django 1.10 the following code could be used:
from django.contrib.auth.management import create_permissions
def migrate_permissions(apps, schema_editor):
for app_config in apps.get_app_configs():
app_config.models_module = True
create_permissions(app_config, apps=apps, verbosity=0)
app_config.models_module = None
Django <= 1.9
see another answer for Django 1.10+
It's enough to call create_permissions
:
from django.contrib.auth.management import create_permissions
apps.models_module = True
create_permissions(apps, verbosity=0)
apps.models_module = None
The whole migration being something like this
# coding:utf-8
from django.db import migrations
from django.contrib.auth.models import Permission, Group
from django.contrib.auth.management import create_permissions
from django.contrib.contenttypes.models import ContentType
from django.conf import settings
MODERATORS_PERMISSIONS = ['change_modelname', ]
def add_permissions(apps, schema_editor):
apps.models_module = True
create_permissions(apps, verbosity=0)
apps.models_module = None
moderators_group = Group.objects.get_or_create(
name=settings.MODERATORS_GROUP)[0]
for codename in MODERATORS_PERMISSIONS:
permission = Permission.objects.get(codename=codename)
moderators_group.permissions.add(permission)
class Migration(migrations.Migration):
dependencies = [
('contenttypes', '0002_remove_content_type_name'),
('thisappname', '0001_initial'),
]
operations = [
migrations.RunPython(add_permissions),
]
And if you want something that will work on any version (or that will keep working when you upgrade):
from django.contrib.auth.management import create_permissions
version = django.VERSION
if version[0] >= 1 and django.VERSION[1] > 9:
for app_config in apps.get_app_configs():
app_config.models_module = True
create_permissions(app_config, apps=apps, verbosity=0)
app_config.models_module = None
else:
apps.models_module = True
create_permissions(apps, verbosity=0)
apps.models_module = None