YII 分页功能实现

        $criteria = new CDbCriteria();
        $criteria->order = 'ID DESC';
        $count = Account::model()->count($criteria);
        $pager = new CPagination($count);
        $pager->pageSize = 20;
        $pager->applyLimit($criteria);
        $account_list = Account::model()->findAll($criteria);
        $this->render('list_account', array('account_list' => $account_list, 'pages' => $pager));