backend.py 文件源码

def add_items(self, model, objs):
        content_type_pk = get_content_types_pks((model,), self.db_alias)[0]
        config = self.get_config()
        for obj in objs:
            obj._object_id = force_text(obj.pk)
            obj._body_ = self.prepare_body(obj)
        connection = connections[self.db_alias]
        if connection.pg_version >= 90500:  # PostgreSQL >= 9.5
            self.add_items_upsert(connection, content_type_pk, objs, config)
        else:
            self.add_items_update_then_create(content_type_pk, objs, config)