preql_queries.py 文件源码

def fields(self, g_id, dbid, head, conn):
    obj_type = json.loads(head['params'])['type']
    if obj_type in acceptable_types:
        fields = auto_reql(r.db(dbid).table(obj_type).map(lambda n: n.keys()).reduce(
            lambda x, y: r.expr(x + y).distinct()), conn)
        return json.dumps(fields)