An Easy Solution for Dependent dropDownList Using AJAX

Comparing #4 with #8

Content

[...]

array(
'prompt'=>'Select Region',
'ajax' => array(
'type'=>'POST',
'url'=>CController::createUrl('loadcities'),

'update'=>'#city_name', Yii::app()->createUrl('YourController/loadcities'), //or $this->createUrl('loadcities') if '$this' extends CController

'update'=>'#city_name', //or 'success' => 'function(data){...handle the data in the way you want...}',
'data'=>array('region_id'=>'js:this.value'),
)));

[...]