A hackneyed question - ajax+CHtml::dropDownList, doesn't work please?

Question

Yii

Good health to all, please help me figure out how to send a POST select via ajax. Here is the code:

echo CHtml::dropDownList('listname', 'bla',
              $model,
        array('empty' => 'Марка авто',
              'style'=>'width:155px',
              'class'=>'btn btn-default dropdown-toggle',
              'ajax' => array(
                        'type'   => 'POST',
                        'url'    => CController::createUrl('site/getMod'),
                        //'data'=> array(
                         //   'id'=>'js:this.value',
                         //   'YII_CSRF_TOKEN' => Yii::app()->request->csrfToken),
                        'update' => '#sub_cat_id',),
            
            ));

It's in the view. The controller is not important, you just need the site/getMod request to return something. How to organize this, please help, a task in Yii, I used to do very little on it.

public function actionGetMod()
  {         
            $ff = array();
                      return $ff;            
  }

This is where the request flies, when you try to insert input values actionGetMod($id)
, a bad request 400 appears, where I'm stupid, help.

<div  id="sub_cat_id">
     <?php    print_r($ff);      ?>
    </div>

As I understand it, the result should be updated here, but nothing happens, there are no errors either OK200. Thanks in advance to those who sympathize.

Answer 1

Are you passing id in GET?

Answer 2

In general, for a long time I will smoke all kinds of scriptures, there are thoughts in the direction of CHtml::$liveEvents = FALSE; but it’s of little use, I don’t have ice with JavaScript either, it turns out the following heresy, which I didn’t expect from myself and from my Yii:
The first select is in my view and there are no problems with it

CHtml::$liveEvents = FALSE;
echo CHtml::dropDownList('listname', 'bla',
              $model,
        array('empty' => 'Марка авто',
              'style'=>'width:auto',
              'class'=>'btn btn-default dropdown-toggle',
              'ajax' => array(
                        'type'   => 'POST',
                        'url'    => CController::createUrl('site/getMod'),
                        'data'=> array(
                            'id'=>'js:this.value',
                            'YII_CSRF_TOKEN' => Yii::app()->request->csrfToken),
                        'update' => '#sub_cat_id',                  
                  ),
            
            ));

When selected, it sends ajax, which in turn returns the second select

public function actionGetMod()
  {
  CHtml::$liveEvents = FALSE;
       if(Yii::app()->request->isAjaxRequest){
        if(isset($_POST['id'])){
            $f= Mod::getModelData($_POST['id']);
            echo CHtml::dropDownList('modelky', 'mode',
              $f,
       array( 'empty' => 'Модель авто',
             'style'=>'width:155px',
              'class'=>'btn btn-default dropdown-toggle',
              'ajax' => array(
                        'type'   => 'POST',
                        'url'    => CController::createUrl('site/getVar'),
                        'data'=> array(
                        'id_v'=>'js:this.value',
                        'YII_CSRF_TOKEN' => Yii::app()->request->csrfToken),
                        'update' => '#var',
                   'succes' => 'function(){$("#var").change();}',
                  ),
           
           ));  
            
        }           
  }
        }

It returns, it is displayed, only this ajax select is no longer sent, but I really want to.
Please, knowledgeable people, 100% have come across Yii superwidgets, help, in JS, because I have a deuce. In the page code after the first ajax here

/*<![CDATA[*/
jQuery(function($) {
jQuery('#listname').on('change', function(){jQuery.ajax({'type':'POST','url':'/site/getMod','data':{'id':this.value,'YII_CSRF_TOKEN':'d02ef985c3400d717ee866ede2af6610af42b446'},'cache':false,'success':function(html){jQuery("#sub_cat_id").html(html)}});return false;});
});
/*]]>*/