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Yii 关联查询有关问题

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2016-06-13 12:04:15904browse

Yii 关联查询问题
三张表 A B C

AB是一对多
BC是一对一

怎么查询满足C的 最终显示 A 的记录
------解决方案--------------------
A---user表(有user_name字段)
B---article表(有user_id字段)
C---article_content表(有article_content_id字段)

条件:通过article_content表的article_content_id字段查询user的username
需要两个relation,在model/Comment.php中加一条:

<br />public function relations() {<br />    return array(<br />        ....<br />        'userInfo' => array(self::BELOGNS_TO, 'User', 'user_id'),<br />    );<br />}<br />


同上,在model/CommentContent.php中添加:
<br />'article' => array(self::HAS_ONE, 'Article', 'article_content_id'),<br />


查询:
<br />$result = ArticleContent::model() -> find('article_content_id = :aid', array(':aid' => $articleId));<br />prinr_r($result -> attributes); // 打印出来的都是article_content表的字段<br />print_r($result -> article -> attributes); //得到article表的字段<br />print_r($result -> article -> userInfo -> user_name); //得到username<br />



我是纯粹为了构造楼主说的这种情况写成这样的哈,一般应该不会设计成这样,多是关联字段都在那个中间表,article表里,查的时候是通过article的model关联其他表查询吧

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