Custom query doctrine symfony

    /**
     * Lists all Article entities.
     *
     * @Route("/search/{q}", name="article_search")
     * @Method("GET")
     */
    public function searchAction($q)
    {
        $em = $this->getDoctrine()->getManager();



        $query = $em->createQuery("SELECT a FROM AppBundle\Entity\Product a WHERE a.title LIKE '%$q%'");
        $products = $query->getResult(); // array of Company objects

        return $this->render('product/search.html.twig', array(
            'products' => $products,
            'query' => $q
        ));
    }