probleme modifier de fenetre modal

Salut,
je suis un débutant en symfony et je veut faire un CRUD avec modale j'arrive a faire l'ajout mais pour la modifier j'ai un probleme.il me semble qu'il faut de javascript pour faire la redirection je sais pas !!!!

voici le code de mon controleur

 <?php

namespace App\Controller;

use App\Entity\LangueMatiere;
use App\Form\LangueMatiereType;
use App\Repository\LangueMatiereRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

/**
 * @Route("/langue")
 */
class LangueMatiereController extends AbstractController
{
    /**
     * @Route("/", name="langue_matiere_index", methods={"GET"})
     */
    public function index(LangueMatiereRepository $langueMatiereRepository): Response
    {
             return $this->render('langue_matiere/index.html.twig', [
            'langue_matieres' => $langueMatiereRepository->findAll(),
        ]);
    }

    /**
     * @Route("/new", name="langue_matiere_new", methods={"GET","POST"})
     */
    public function new(Request $request): Response
    {
        $langueMatiere = new LangueMatiere();
        $form = $this->createForm(LangueMatiereType::class, $langueMatiere);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->persist($langueMatiere);
            $entityManager->flush();
            return new Response('success');
            return $this->redirectToRoute('langue_matiere_index');
        }

        return $this->render('langue_matiere/new.html.twig', [
            'langue_matiere' => $langueMatiere,
            'form' => $form->createView(),
        ]);
    }

    /**
     * @Route("/{id}", name="langue_matiere_show", methods={"GET"})
     */
    public function show(LangueMatiere $langueMatiere): Response
    {
        return $this->render('langue_matiere/show.html.twig', [
            'langue_matiere' => $langueMatiere,
        ]);
    }

    /**
     * @Route("/{id}/edit", name="langue_matiere_edit", methods={"GET","POST"})
     */
    public function edit(Request $request, LangueMatiere $langueMatiere): Response
    {
        $form = $this->createForm(LangueMatiereType::class, $langueMatiere);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $this->getDoctrine()->getManager()->flush();

            return $this->redirectToRoute('langue_matiere_index');
        }

        return $this->render('langue_matiere/edit.html.twig', [
            'langue_matiere' => $langueMatiere,
            'form' => $form->createView(),
        ]);
    }

    /**
     * @Route("/{id}", name="langue_matiere_delete", methods={"DELETE"})
     */
    public function delete(Request $request, LangueMatiere $langueMatiere): Response
    {
        if ($this->isCsrfTokenValid('delete'.$langueMatiere->getId(), $request->request->get('_token'))) {
            $entityManager = $this->getDoctrine()->getManager();
            $entityManager->remove($langueMatiere);
            $entityManager->flush();
        }

        return $this->redirectToRoute('langue_matiere_index');
    }
}

voici le code de template index.html.twig

{% extends 'base.html.twig' %}

{% block title %}Liste Langue Matiere {% endblock %}

{% block body %}
    <h1>Liste Langue Matiere </h1>
    {% for message in app.flashes('info') %}
        <div class="alert alert-success">{{ message }}</div>
    {% endfor %}
    {{ render(controller(
        'App\\Controller\\LangueMatiereController::new'))}}
    {#<td><a>
            <button class="btn btn-success" data-toggle="modal" data-target="#modalAjoutForm"><span
                        class="glyphicon glyphicon-plus"></span></button>
        </a></td>#}

    <table class="table">
        <thead>
        <tr>

            <th>Langue Matière en Français</th>
            <th>Langue Matière en Arabe</th>
            <th>Action</th>

        </tr>
        </thead>
        <tbody>
        {% for langue_matiere in langue_matieres %}
            <tr>

                <td>{{ langue_matiere.libelleLangueFe }}</td>
                <td>{{ langue_matiere.libelleLangueAr }}</td>

                <td><a>
                        <button class="btn btn-primary" data-toggle="modal" data-target="#myModal{{ langue_matiere.id }}"><span
                                    class="glyphicon glyphicon-info-sign"></span></button>
                    </a></td>                {#<td><a href="{{ path('langue_matiere_edit', {'id': langue_matiere.id}) }}">
                        <button class="btn btn-success"><span class="glyphicon glyphicon-pencil"></span></button>
                    </a>
                </td>#}

                <a href="" class="tooltip-test" name="_method" value="DELETE" data-placement="top" title="" data-original-title="Supprimer"  data-toggle="modal" data-target="#deleteModal{{ langue_matiere.id }}"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span>    </a>

                <td>
                    {{ render(controller(
                    'App\\Controller\\LangueMatiereController::edit',{'id':langue_matiere.id}))}}

                </td>

                <td> {{ include('langue_matiere/_delete_form.html.twig') }} </td>
            </tr>
            <td>

                <div class="modal fade" id="deleteModal{{ langue_matiere.id }}" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
                    <div class="modal-dialog">
                        <br><br><br><br>
                        <div class="modal-content">
                            <div class="modal-header">
                                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                                <h4 class="modal-title">Comfirmation de suppression :</h4>
                            </div>
                            <div class="modal-body" >
                                <p><span>Voulez-vous vraiment supprimer <a href="#"></a>  {{ langue_matiere.libelleLangueAr }}? </span></p>

                            </div>
                            <div class="modal-footer">
                                <button type="button" class="btn btn-default " data-dismiss="modal">Annuler</button>
                                <a href="{{ path('langue_matiere_delete', {'id': langue_matiere.id}) }}" data-toggle="modal" class="btn btn-danger"  id="DELETE" >Supprimer</a>
                            </div>
                        </div>
                    </div>
                </div>

            </td>

            <div class="modal fade" id="myModal{{ langue_matiere.id }}" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
                <div class="modal-dialog">
                    <br><br><br><br>
                    <div class="modal-content">
                        <div class="modal-header">
                            <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                            <h4 class="modal-title" id="myModalLabel"> Détail :</h4>
                        </div>
                        <div class="modal-body">
                            <div class="row">

                                <div class="col-lg-6">

                                    <ul>
                                        <li><strong>Langue matière en Français: </strong>  {{ langue_matiere.libelleLangueFe }}</li> <br>
                                        <li><strong>Langue matière en Arabe: </strong>     {{ langue_matiere.libelleLangueAr }}</li> <br>

                                    </ul>

                                </div>
                                <div class="col-lg-6">
                                </div>
                            </div>
                        </div>
                        <div class="modal-footer">
                            <button type="button" class="btn btn-danger" data-dismiss="modal">Fermer</button>

                        </div>

                    </div>
                </div>
            </div>
        {% else %}
            <tr>
                <td colspan="4">Pas d'enregistrement</td>
            </tr>

        {% endfor %}

        </tbody>

    </table>

{% endblock %}

quand j'appuis sur modifier la formulaire sera bien rempli mais quand je confirme la modification j'ai l'erreur suivant:
No route found for "POST /langue/": Method Not Allowed (Allow: GET)

Aidez moi SVP