public function deleteImageAction()
 {
     $id = $this->request->getPost('id', 'int');
     $this->view->cleanTemplateBefore();
     $model = Image::findFirst(array('id = ' . $id));
     $slider_id = $model->getSliderId();
     if ($model) {
         $imageFilter = new \Image\Filter(array('id' => $id, 'type' => 'slider'));
         $imageFilter->remove(true);
         $entity = Slider::findFirst('id = ' . $model->getSliderId());
         if ($model->delete()) {
             $result = true;
         } else {
             $result = false;
         }
     } else {
         $result = false;
     }
     $this->response->setHeader('Content-Type', 'text/plain');
     $this->response->setContentType('application/json', 'UTF-8');
     $this->response->setStatusCode(200, 'OK');
     $this->response->setContent(json_encode($result));
     $this->view->disable();
     echo !!$result;
     return $this->response;
 }