Yii - 连动下拉菜单，可多级哦

视图文件

<?php echo CHtml::activeDropDownList($model,'zmg_id',MemGroup::model()->getMemGroup(),array(
		'class'=>'s_ipt w_120',
		'empty'=>'请选择会员组',
		'ajax' =>array(
					'type'=>'GET',
					'url'=>CController::createUrl('cmpTemplates/getMemType'),
					'update'=>'#CmpTemplates_zmg_ids',
					'data'=>array('mid'=>"js:this.value")
					),
		))?>
<?php echo $form->dropDownList($model,'zmg_ids',array(),array('class'=>'s_ipt w_120','empty'=>'选择会员等级'))?>

控制器

/**
 * 获取会员组,对应的会员等级，用于下拉菜单
 */
public function actionGetMemType($mid=0)
 {
 	$criteria=new CDbCriteria;
 	$criteria->compare('zmg_id',$mid);
	$memType = MemType::model()->findAll($criteria);
	
	$name = '选择会员等级';
	echo CHtml::tag('option', array('value'=>0), $name, true);
	foreach($memType as $val) {
		echo CHtml::tag('option', array('value'=>$val->zmt_id),CHtml::encode($val->zmt_title),true);
	}
}

模型

	/*
	 * 取会员组信息	 
	 */
   public function getMemGroup($type=null){
	   	if($type==null){
	   		$criteria=new CDbCriteria;
	   		$criteria->compare('type','1');
	   		$memGroup = MemGroup::model()->findAll($criteria);
	   		return CHtml::listData($memGroup,'zmg_id','zmg_title');
	   	}else{
	   		$level = $this->getMemGroup();
	   		if(array_key_exists($type,$level)){
	   			return $level[$type];
	   		}
	   	}
   }