/**
  * @Route("/card/generate", name="generate_cards")
  */
 public function generateCardsAction(Request $request)
 {
     if (!$this->getRequest()->isXmlHttpRequest()) {
         throw $this->createNotFoundException();
     }
     $em = $this->getDoctrine()->getManager();
     /**/
     $entity = new Card();
     $form = $this->createForm(new CardGenerate(), $entity);
     $form->handleRequest($request);
     $expiryPeriod = $form->get("expiryPeriod")->getData();
     $series = $form->get("series")->getData();
     $amount = $form->get("amount")->getData();
     if ($amount && $series && $expiryPeriod) {
         list($currentNumber, $series) = $this->getMaxNumberOfSeries($series);
         for ($i = 0; $i < $amount; $i++) {
             $newCard = new Card();
             $newCard->setSeries($series);
             $newCard->setNumber(str_pad(++$currentNumber, 8, "0", STR_PAD_LEFT));
             $newCard->setIssueDate(new \DateTime());
             $expiryDate = new \DateTime();
             $newCard->setExpiryDate($expiryDate->modify('+' . $expiryPeriod . ' months'));
             $newCard->setAmount(0);
             $newCard->setStatus(Card::STATUS_INACTIVE);
             $em->persist($newCard);
         }
         $em->flush();
         $cards = $em->getRepository('AppBundle:Card')->findAll();
         $view = $this->renderView('card/partial/card_list.html.twig', array('cards' => $cards));
         $response = new Response($view);
         return $response;
     } else {
         return;
     }
 }