<form action="{{ path('rechercheEtudiant') }}">
        @Email :
        <input type="text" name="email" required="required">
        <button type="submit" class="btn btn-primary">Recherche</button>
    </form>


//////////////////////


/**
     * @route("/rechercheEtudiant" , name="rechercheEtudiant")
     */
    public function recherche (Request $request )
    {
        $params = $request->query->all();
        $email = $request->get('email');
        $em = $this->getDoctrine()->getManager();
        $repo = $em->getRepository(Etudiant::class);
        $Etudiant = $repo->findBy(array('email' => $email));
        if (!$Etudiant) {
            throw $this->createNotFoundException("No User" . $email);
            // return $this->redirectToRoute("affiche");
        }
        return $this->render("etudiant/recherche.html.twig", [
            "etudiant" => $Etudiant
        ]);
    }