使用 facebook php sdk,我试图获取其他人在一个人的墙上发布的每个帖子的评论列表。我在批处理 API 请求中使用 FQL,如下所示:
$getStream = urlencode("method/fql.query?query=SELECT post_id, actor_id, target_id, source_id,viewer_id, message FROM stream WHERE app_id= '' and message != '' and source_id=$fbprofileId and target_id=$fbprofileId and is_hidden=0 limit 100");
$getComments = urlencode("method/fql.query?query=select object_id, post_id, fromid, time, text, id, likes, comments, user_likes, is_private from comment where post_id in({result=get-stream:$.*.post_id})");
$queries = array(
array('method' => 'POST',
'omit_response_on_success' => false,
'name' => 'get-stream',
'relative_url' => $getStream),
array('method' => 'POST',
'omit_response_on_success' => false,
'name' => 'get-comments',
'relative_url' => $getComments)
);
return $this->fbApi->api('?batch='.json_encode($queries), 'POST');
我从 fb 得到以下回复:
{"error_code":601,"error_msg":"Parser error: unexpected '_1831955838114' at position 63.","request_args":[{"key":"method","value":"fql_query"},{"key":"format","value":"json"},{"key":"_fb_batch_child_request","value":"1"},{"key":"query","value":"select user_id, object_id from like where post_id in(1216940586_1831955838114,1216940586_1831891396503,1216940586_1831423824814,1216940586_1828915522108,1216940586_1822006149378,1216940586_1820687356409,1216940586_1813971228510,1216940586_1809392594047,1216940586_1795412004541,1216940586_1795177518679)"},{"key":"_fb_url","value":"method\/fql.query"},{"key":"access_token","value":"AAAC02IZB..."}]}
似乎很清楚 post_ids 需要被引用,事实上,在 IN 子句中使用带有引用 post_ids 的相同查询 fb graph api explorer 我得到的结果很好。
**由于 post_ids 是字符串(不是整数),如何在依赖 Batch API FQL 查询的上下文中为它们加上引号以使它们成为 FQL IN 子句的正确参数?**