php - 在 Yii 中返回 CActiveDataProvider

Question

我有 4 个数据库表:

用户:id、用户名、密码

楼层:id, userid, name

房间:id，楼层，名字

学生:id, room, name, active

如何为后续的 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))

我试过:

$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);

但是响应:

Fatal error: Call to a member function getDbCriteria() on a non-object in X:appserv\www\framework\web\CActiveDataProvider.php on line 225

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,));