yii - Yii Criteria Condition Order By 查询语法

Question

我有下面的代码，我正在尝试添加'order' => 'creation_date DESC'或类似的东西，但我无法获得正确的 sintax（我正在尝试按 DESC 顺序对结果进行排序）；

$criteria = new CDbCriteria;
        $total = EmployerContract::model()->count();

        $pages = new CPagination($total);
        $pages->pageSize = 10;
        $pages->applyLimit($criteria);

        $posts = EmployerContract::model()->findAll($criteria);