How to render in Yii in external activity?

Question

Yii

Good afternoon,
I decided to collect the common moments of 2 similar models into behavior, and the common actions of controllers into external actions. Faced the following problem:
Created an external action:

class ShowTreeAction extends CAction{
    public $pk = 'id';
    public $modelClass;
    function run(){
        if(empty($_GET[$this->pk]))
            throw new CHttpException(404);
        $this->render('item',array('model'=>CActiveRecord::model($this->modelClass)->findByPk($this->pk)));
    }
}

Added an action in the controller:

function actions(){
        return array(
            'item'=>array(
                'class'=>'ShowTreeAction',
                'modelClass' => 'Service'
            )
        );
    }

But when switching to the action item , the following error pops up:
No method or closure with the name "render" was found in the ShowTreeAction class and its behaviors.
How to be?

Answer 1

$this->controller->render(...)