Ajax-recently want to get a Yii of the dropdown box-level operation, but has not come out, the great God help to see it!!!

Ajaxphpyii Selection Linkage

This is the code
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    '1',2=>'2'),array('empty'=>'--请选择--',        'id' => 'node',        'ajax'=>array(            'type'=>'POST',            'url'=>Yii::app()->createUrl('test/updatea'),            'update'=>'#servers',            'data'=>array('node_name'=>'js:$("#node").val()'),        )    )       );        echo CHtml::dropDownList('servers', '', array('--请选择--'));?>

This is the controller.

  class TestController extends Controller{    public function actionIndex(){          $this->renderPartial('index');}    public function actionUpdatea(){      $data = array(1=>'桂林',2=>'南宁');    foreach($data as $value=>$name){     $dropDownCities = CHtml::tag('option',array('value'=>$value),CHtml::encode($name),true);    }  echo  $dropDownCities ;}}

Great God help to see what's going on!

