Method as_manager

django/db/models/query.py:360–366

(cls)

        self._query = value

    def as_manager(cls):
        # Address the circular dependency between `Queryset` and `Manager`.
        from django.db.models.manager import Manager

        manager = Manager.from_queryset(cls)()
        manager._built_with_as_manager = True
        return manager

    as_manager.queryset_only = True
    as_manager = classmethod(as_manager)