Form auto field-refill after refreshing

Yii 1.1 General Discussion
1

Hi,

I have a "create" form which has 10 fields and it uses CActiveForm. When a field is filled incorrectly and then clicked on create button, the site is refreshed and error message is shown and all previously filled fields are refilled again. However I have two dropdown lists which are dependent on each other via ajax(campus and building, building is dependent on campus) and they are not refilled after refreshing. Below, I put all the codes that may have a role in this problem:

form:




	<div class="row">

		<?php echo $form->labelEx($model, 'locationId'); ?>

		<?php echo $form->dropDownList(Location::model(),'campus', CHtml::listData(Location::model()->findAll(), 'campus', 'campus'),

				array(

					'empty' =>'--please select--',	

					'ajax' => array(

					'type'=>'POST', //request type

					'url'=>CController::createUrl('dynamicBuildings'), //url to call.

					'update'=>'#Location_building', //selector to update

					))); 

		

		 ?>

		<?php echo $form->error(Location::model(),'campus'); ?>

	</div>

	

	<div class="row">

		<?php echo $form->labelEx(Location::model(), 'building'); ?>

		<?php echo $form->dropDownList(Location::model(),'building', array(), array('empty' =>'--please select campus first--')); ?>

		<?php echo $form->error(Location::model(),'building'); ?>

	</div>

controller- create action




	public function actionCreate()

	{

		$model=new Event;


		// Uncomment the following line if AJAX validation is needed

		// $this->performAjaxValidation($model);


		if(isset($_POST['Event']))

		{

			$datas = $_POST['Event'];

			if(isset($_POST['Location']['building'])){


				$locationId = Location::model()->find('campus=:campus AND building=:building',

				array(':campus'=> $_POST['Location']['campus'], ':building'=> $_POST['Location']['building']));

				$locationId = $locationId['id'];

				$datas['locationId'] = $locationId;

			}

			$datas['userId'] = Yii::app()->user->getID();

			$model->attributes=$datas;

			if($model->save())

				$this->redirect(array('view','id'=>$model->id));

		}


		$this->render('create',array(

			'model'=>$model,

		));

	}

controller- ajax action:




	public function actionDynamicBuildings()

	{

		//please enter current controller name because yii send multi dim array

		//$campus = $_POST['Location'];

		$data=Location::model()->findAll('campus=:campus',

				array(':campus'=> $_POST['Location']['campus']));


		$data=CHtml::listData($data,'building','building');

		if($data == null){

			echo CHtml::tag('option',

					array('empty'),CHtml::encode('--please select campus first--'),true);

		}

		else{

			echo CHtml::tag('option',

					array('empty'),CHtml::encode('--please select--'),true);

		}

		foreach($data as $value=>$building)

		{

			echo CHtml::tag('option',

					array('value'=>$value),CHtml::encode($building),true);

		}

	}

Thanks

2

noone?