from django.apps import AppConfig
from django.contrib.contenttypes.checks import check_generic_foreign_keys
from django.core import checks
from django.db.models.signals import post_migrate, pre_migrate
from django.utils.translation import ugettext_lazy as _
from .management import (
create_contenttypes, inject_rename_contenttypes_operations,
)
class ContentTypesConfig(AppConfig):
name = 'django.contrib.contenttypes'
verbose_name = _("Content Types")
def ready(self):
pre_migrate.connect(inject_rename_contenttypes_operations, sender=self)
post_migrate.connect(create_contenttypes)
checks.register(check_generic_foreign_keys, checks.Tags.models)