Question

After an ajax request i got one array from my controller as response, how can I use this array values in my dropdown list?

Answer

in my view I have

echo CHtml::dropDownList('client_id', '',CHtml::listData($model,'client_id','client_name'), array(
'ajax'=> array(
'type'=>'POST',
'url'=>Yii::app()->baseUrl.'/index.php?r=page/dynamicDropdownList',
'update'=>'#program_id',
'empty'=>'-Select a Client-')));

// I need to populate the response array in this dropdownlist
echo CHtml::dropDownList('program_id','', CHtml::listData($result,'program_id', 'program_name'));

in my controller

 public function actionDynamicDropdownList()
 {

    if($_POST['client_id'] > '0') {
        $result = Yii::app()->db->createCommand()->select('program_id, program_name')->from('program')->where('client_id='.$_POST['client_id'].'')->order('program_name')->queryAll();
        $this->render('admin', array(
            'result' => $result,
        ));

    }

   }

Another Problem

Now I got everything working except the second drop downlist is also showing the values of 1st dropdown list with the result.

solution:- I have parse the response and show it in the dropdownlist

Answer 1

This is how your controller should look like:

public function actionIndex() {

        $model = new SearchForm();
        if ($_GET['SearchForm']) {
            $model->attributes = $_GET['SearchForm'];
        }

//here is where you put your criteria or query commands

        if ($_GET['ajax']) {
            $this->renderPartial('index', array(
                'model' => $model,
            ));
        } else {

            $this->render('index', array(
                'model' => $model,
            ));
        }
    }

You catch the data from ajax or GET and you do something with it, then you pas the data to the view;

And this should be what the vies contains:

<? echo $form->dropDownList($model, 'position_type', CHtml::listData(PositionType::model()->findAll(array('condition' => 'status=1')), 'id', 'name'), array('class' => 'postdropdown2', 'empty' => array(-1 => 'All'), 'onchange' => 'showDiv(this.value,1);')); ?>

You have to work with data received using ajax in the controller, as it is not visible in the view, if it was not passed using render or renderpartial