yii中给CGridView设置默认的排序根据时间倒序的方法

public function searchWithRelated() {

 $criteria = new CDbCriteria;


 $criteria->together = true; //without this you wont be able to search the second table's data

 $criteria->with = array('mySecondTable');

 $criteria->compare('id', $this->id, true);

 $criteria->compare('mySecondTable.column', $this->mySecondTable_column, true);


 return new CActiveDataProvider($this, array(

 'criteria' => $criteria,

 'sort'=>array(

 [color=red] 'defaultOrder'=>'t.create_time DESC',[/color]

 ),

 'pagination' => array(

 'pageSize' => 100,

 ),

 ));

 }