Frontend : attribution d'un bandeau à chaque page

ShopBundle/Twig/FrontendTwigExtension.php

 use Lc\ShopBundle\Form\Frontend\NewsletterType;
 use Lc\ShopBundle\Repository\ProductCategoryRepository;
 use Symfony\Component\Form\FormFactoryInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\Security\Core\Security;
 use Twig\Extension\AbstractExtension;
 use Twig\TwigFilter;
         protected $formFactory ;
         protected $productCategoryRepository ;
         protected $hubRepository ;
+        protected $requestStack ;
 
         public function __construct(EntityManagerInterface $em, Security $security, ProductCategoryRepository $productCategoryRepository,
-                GlobalParam $globalParam, FormFactoryInterface $formFactory, HubRepository $hubRepository)
+                GlobalParam $globalParam, FormFactoryInterface $formFactory, HubRepository $hubRepository, RequestStack $requestStack)
         {
                 $this->em = $em ;
                 $this->security = $security ;
                 $this->hubRepository = $hubRepository ;
                 $this->globalParam = $globalParam ;
                 $this->formFactory = $formFactory ;
+                $this->requestStack = $requestStack ;
         }
 
         public function getFunctions()