django_orm.py 文件源码

def locked_get(self):
        """Retrieve stored credential.

        Returns:
            oauth2client.Credentials
        """
        credential = None

        query = {self.key_name: self.key_value}
        entities = self.model_class.objects.filter(**query)
        if len(entities) > 0:
            credential = getattr(entities[0], self.property_name)
            if credential and hasattr(credential, 'set_store'):
                credential.set_store(self)
        return credential