This article describes the multi-stage linkage drop-down menu implemented by Yii. Share it for your reference, as follows:
1. View File
<?php echo CHtml::activeDropDownList($model,'zmg_id',MemGroup::model()->getMemGroup(),array(
'class'=>'s_ipt w_120',
'empty'=>'Please select a membership group',
'ajax' =>array(
'type'=>'GET',
'url'=>CController::createUrl('cmpTemplates/getMemType'),
'update'=>'#CmpTemplates_zmg_ids',
'data'=>array('mid'=>"js:")
),
))?>
<?php echo $form->dropDownList($model,'zmg_ids',array(),array('class'=>'s_ipt w_120','empty'=>'Select membership level'))?>
2. Controller
/**
* Get the membership group, corresponding membership level, used for drop-down menu
*/
public function actionGetMemType($mid=0)
{
$criteria=new CDbCriteria;
$criteria->compare('zmg_id',$mid);
$memType = MemType::model()->findAll($criteria);
$name = 'Select membership level';
echo CHtml::tag('option', array('value'=>0), $name, true);
foreach($memType as $val) {
echo CHtml::tag('option', array('value'=>$val->zmt_id),CHtml::encode($val->zmt_title),true);
}
}
3. Model
/*
* Get membership group information
*/
public function getMemGroup($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];
}
}
}
For more information about Yii, readers who are interested in this site can view the topic:Yii framework introduction and common techniques summary》、《Summary of excellent development framework for php》、《Basic tutorial on getting started with smarty templates》、《Summary of php operation office documentation skills (including word, excel, access, ppt)》、《PHP object-oriented programming tutorial》、《Summary of usage of php strings》、《PHP+mysql database operation tutorial"and"Summary of common database operation techniques for php》
I hope that this article will be helpful to everyone's PHP programming based on the Yii framework.