/**
  * delete stock entity from the product detail table
  * @Route("/delete_stock/{id}",name="deletestock2")
  * @ParamConverter("stock", class="AppBundle:Stock")
  */
 public function delete_stock(Stock $stock)
 {
     $client = $stock->getClient();
     $client_id = $client->getId();
     $em = $this->getDoctrine()->getManager();
     $em->remove($stock);
     $em->flush();
     if (count($client->getStocks()) == 0) {
         $client->setIfStockPurchased(false);
         $em->flush();
     }
     return $this->redirectToRoute('productdetail', array('id' => $client_id));
 }