/**
  * @param MvcEvent $e
  * @return mixed|void
  */
 public function onDispatch(MvcEvent $e)
 {
     $this->inputFilter->setData($this->params()->fromPost());
     if (!$this->inputFilter->isValid()) {
         $this->flashMessenger()->addErrorMessage($this->inputFilter->getMessages());
         return $this->redirect()->toRoute('frontend');
     }
     try {
         $this->pagesResource->download($this->inputFilter->getValue('site_url'));
         $this->flashMessenger()->addSuccessMessage('Url successfully queued for download all images');
     } catch (ApiException $e) {
         $this->flashMessenger()->addErrorMessage($e->getMessage());
     }
     $this->redirect()->toRoute('frontend');
 }