adding permission to group in migration [Django]

001_migration.py

# Generated on 2021-02-13

from django.db import migrations


def _get_perm_obj(perm: str, apps=None):
    Permission = apps.get_model("auth", "Permission")
    app_label, codename = perm.split(".", 1)
    perm_obj, _created = Permission.objects.get_or_create(content_type__app_label=app_label,
                                codename=codename)
    return perm_obj


def alter_perm_to_allow_job_deletion(apps, schema_editor):
    # We can't import the model directly as it may be a newer
    # version than this migration expects. We use the historical version.
    Group = apps.get_model("auth", "Group")
    grp, _grp_created = Group.objects.get_or_create(name="DefaultGlobal")
    perm_obj = _get_perm_obj("api_app.delete_job", apps=apps)
    grp.permissions.add(perm_obj)


class Migration(migrations.Migration):

    dependencies = [
        ("api_app", "0004_auto_20201112_0021"),
        # added dependency to enable using models from 3rd party app in our app
        ("guardian", "0001_initial"),
    ]

    operations = [
        migrations.RunPython(alter_perm_to_allow_job_deletion),
    ]