ref.py 文件源码

def dereference(self, session, ref, allow_none=False):
        """ Dereference a pymongo "DBRef" to this field's underlying type """
        from ommongo.document import collection_registry
        # TODO: namespace support
        ref.type = collection_registry['global'][ref.collection]
        obj = session.dereference(ref, allow_none=allow_none)
        return obj