详解Yii实现分页的两种方法

Yii实现分页的两种方法,一种是用DAO实现,另外一种是在widget实现.

各有优点吧,第一种效率会高一点, 第二种可以使用自带的表格,方便一些.

一. DAO实现分页.

 [Controller层]

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层]

  
 $row["sumrate"]));?> 
 " ?>
 
 widget('ClinkPager',array('pages'=>$pages));
 ?>

优点: DAO效率高; 缺点: view层需要自己写一些样式,稍显麻烦一点

二. widget实现分页

[model层]

  public $dayrate;


  
  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(
 // 表头设置点击排序的字段
 'attributes'=>array(
   'remitdate',
   'dayrate'=>array(
     'asc'=>'dayrate',
     'desc'=>'dayrate DESC',
   )
 ),
 'defaultOrder'=>'remitdate desc',
      ),
    ));  
  }

[Controller层]

  public function actionReport()
  {
    $model=new Delivery('statistics');
    $model->unsetAttributes(); // clear any default values
     
    $this->render('report',array(
      'model'=>$model,
    ));
  }

 [View层]

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

优点: 可以使用自带的样式; 缺点: 效率略低.

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。