Method allow_migrate

django/db/utils.py:257–269

(self, db, app_label, **hints)

        return obj1._state.db == obj2._state.db

    def allow_migrate(self, db, app_label, **hints):
        for router in self.routers:
            try:
                method = router.allow_migrate
            except AttributeError:
                # If the router doesn't have a method, skip to the next one.
                continue

            allow = method(db, app_label, **hints)

            if allow is not None:
                return allow
        return True

    def allow_migrate_model(self, db, model):
        return self.allow_migrate(