在Yii中返回CActiveDataProvider

Question

我有4個數據庫表：

用戶名：id，用戶名，密碼

樓層 ：ID，用戶ID，名稱

房間 ：ID，樓層，名稱

學生 ：身份證，房間，姓名，現役

如何為跟隨的SQL命令返回CActiveDataProvider？

SELECT * FROM `student` WHERE `student`.`active` = 0 AND `student`.`room` IN (SELECT `room`.`id` FROM `room` WHERE `room`.`floor` = (SELECT `floor`.`id` FROM `floor` WHERE `floor`.`userid` = $userid))

我試過了：

$model = Student::model()->findAllBySql("SELECT * FROM student WHERE active = 0 AND room IN (SELECT id FROM room WHERE floor = (SELECT id FROM floor WHERE user = $user))");
return new CActiveDataProvider($model);

但是回應：

致命錯誤：在第225行的X：appserv \\ www \\ framework \\ web \\ CActiveDataProvider.php中的非對象上調用成員函數getDbCriteria（）

Answer 1

命名占位符很有用。

$criteria = new CDbCriteria;
$criteria->condition = 'student.active = 0 AND student.room IN (SELECT room.id FROM room WHERE room.floor = (SELECT floor.id FROM floor WHERE floor.userid = :userid))';
$criteria->params=array(':userid'=>$userid);
$dataProvider = new CActiveDataProvider('Student',array('criteria'=>$criteria,));