in view
<html>
<head>
<link rel="stylesheet" type="text/css" href="<?php echo Yii::app()->theme->baseUrl; ?>/css/styles.css" />
</head>
<body>
<?php
echo CHtml::dropDownList('country_id','', array(1=>'USA',2=>'France',3=>'Japan'),
array(
'ajax' => array(
'type'=>'POST', //request type
'url'=>CController::createUrl('currentController/dynamiccities'), //url to call.
//Style: CController::createUrl('currentController/methodToCall')
'update'=>'#city_id', //selector to update
//'data'=>'js:javascript statement'
//leave out the data key to pass all form values through
)));
//empty since it will be filled by the other dropdown
echo CHtml::dropDownList('city_id','', array());
?>
</body>
</html>
In controller
<?php
class currentController extends CController
{
public function actionDynamiccities()
{
$data=Location::model()->findAll('parent_id=:parent_id',
array(':parent_id'=>(int) $_POST['country_id']));
$data=CHtml::listData($data,'id','name');
foreach($data as $value=>$name)
{
echo CHtml::tag('option',
array('value'=>$value),CHtml::encode($name),true);
}
}
}
?>
it is not showing the data in another dropdownlist why.