Yii實現分頁的兩種方法

一. DAO實現分頁.

[Controller層]

public function actionReport()
    {
        $sql = "select remitdate, sum(rate) sumrate from td_delivery 
            group by remitdate 
            order by remitdate desc";
        $criteria=new CDbCriteria();
        $result = Yii::app()->db->createCommand($sql)->query();
        $pages=new CPagination($result->rowCount);
        $pages->pageSize=2; 
        $pages->applyLimit($criteria); 
        $result=Yii::app()->db->createCommand($sql." LIMIT :offset,:limit"); 
        $result->bindValue(':offset', $pages->currentPage*$pages->pageSize); 
        $result->bindValue(':limit', $pages->pageSize); 
        $posts=$result->query();
        $this->render('report',array( 
                'posts'=>$posts, 
                'pages'=>$pages, 
        ));
    }

[View層]

<?php foreach($posts as $row):?> 
 <?php echo CHtml::link($row["remitdate"],array('delivery/view','remitdate'=>$row["sumrate"]));?> 
 <?php echo $row["sumrate"]."<br />" ?>
 <?php endforeach;?>
 <?php 
 //分頁widget代碼: 
 $this->widget('CLinkPager',array('pages'=>$pages));
 ?>

優勢: DAO效率高; 缺點: view層須要本身寫一些樣式,稍顯麻煩一點

二. widget實現分頁

[model層]

/**
     * @var string attribute : 日運費 (統計用)
     * 須要對新增長的字段作個聲明
     */
    public $dayrate;


    /*
     * 統計功能: 統計每日的運費
     */
    public function statistics()
    {
        $criteria = new CDbCriteria;
        $criteria->select = 'remitdate, sum(rate) AS dayrate';
        $criteria->group = 'remitdate';
        
        return new CActiveDataProvider(get_class($this), array(
            'criteria'=>$criteria,
            'sort'=>array(
                // 表頭設置點擊排序的字段
                'attributes'=>array(
                    'remitdate',
                    'dayrate'=>array(
                        'asc'=>'dayrate',
                        'desc'=>'dayrate DESC',
                    )
                ),
                'defaultOrder'=>'remitdate desc',
            ),
        ));    
    }

[Controller層]

/**
     * 運單統計功能:
     * 按日期統計
     */
    public function actionReport()
    {
        $model=new Delivery('statistics');
        $model->unsetAttributes();  // clear any default values
         
        $this->render('report',array(
            'model'=>$model,
        ));
    }

[VIEW]層

<?php $this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'delivery-grid',
    'dataProvider'=>$model->statistics(),
    'filter'=>$model,
    'columns'=>array(
        'remitdate',
        'dayrate',
        array(
            'class'=>'CButtonColumn',
        ),
    ),
)); ?>