我在一个Symfony 5项目工作，我想调用一个JavaScript函数，并通过Ajax请求（我从一个控制器）从一个Twig。我创建一个函数phoneverif（），以做一些验证之前的形式验证。.喜欢做一个测试，如果字段是空白的，然后一个警报将出现也验证数据库中的数据的存在。
但是第一个非常简单的测试已经失败了，并且出现了一个错误：

Uncaught ReferenceError: phoneverif is not defined
    onclick http://localhost:8000/super_admin/telephone/nouveau:1

下面是我的wig代码：

{% extends 'superadmin.html.twig'%}
 
 
 {% block body %} 


        <div class="container-fluid">

          <!-- Page Heading -->
          <h1 class="h3 mb-4 text-gray-800">Nouveau téléphone</h1>

        </div>
  
        <div class="col-md-12">
                {% for flashMessage in app.session.flashbag.get('notice') %}
                    <div class="alert alert-success alert-dismissable">
                        <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
                        <h4><i class="icon fa fa-check"></i>{{ flashMessage }}</h4>
                    </div>
                {% endfor %}  

   

                 <!-- general form elements -->
                <div>
                    <!-- form start -->
                    {{ form_start(form)}}
                    <div>
                         <div class="row">
                                <div class="col-md-6">
                                    <div class="form-group">
                                        <label>{{ form_label(form.userGroup) }}</label>
                                        {{ form_widget(form.userGroup) }}
                                        <span class="text-danger">{{ form_errors(form.userGroup) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.protocol) }}</label>
                                        {{ form_widget(form.protocol) }}
                                        <span class="text-danger">{{ form_errors(form.protocol) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.extension) }}</label>
                                        {{ form_widget(form.extension) }}
                                        <span class="text-danger">{{ form_errors(form.extension) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.dialplanNumber) }}</label>
                                        {{ form_widget(form.dialplanNumber) }}
                                        <span class="text-danger">{{ form_errors(form.dialplanNumber) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.voicemailId) }}</label>
                                        {{ form_widget(form.voicemailId) }}
                                        <span class="text-danger">{{ form_errors(form.voicemailId) }}</span>
                                    </div>
                                </div>
                                <div class="col-md-6">
                                    <div class="form-group">
                                        <label>{{ form_label(form.login) }}</label>
                                        {{ form_widget(form.login) }}
                                        <span class="text-danger">{{ form_errors(form.login) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.pass) }}</label>
                                        {{ form_widget(form.pass) }}
                                        <span class="text-danger">{{ form_errors(form.pass) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.confSecret) }}</label>
                                        {{ form_widget(form.confSecret) }}
                                        <span class="text-danger">{{ form_errors(form.confSecret) }}</span>
                                    </div>
                                    <div class="form-group">
                                        <label>{{ form_label(form.serverIp) }}</label>
                                        {{ form_widget(form.serverIp) }}
                                        <span class="text-danger">{{ form_errors(form.serverIp) }}</span>
                                    </div>
                                </div>
                            </div>
                        </div>
                   
                    <div>
                        <button type="button" class="btn btn-primary" onclick="phoneverif();">Ajouter</button>
                      
                        <a class="btn btn-warning" href="{{ path('Les_telephones') }}">Retour</a>
                    </div>
                    {{ form_end(form)}}
    </div>
            </div>
        </div>
{% endblock %}                    

{% block javascripts %}

<script src="{{ asset('bundles/fosjsrouting/js/router.js') }}"></script>
<script src="{{ path('fos_js_routing_js', { callback: 'fos.Router.setData' }) }}"></script>
<script type="text/javascript">

                                function phoneverif() {
                                    if ($("#telephone_extension").val() == '') {
                                        alert('Vous devez saisir une extension');
                                    } else {
                                        if ($("#telephone_dialplanNumber").val() == '') {
                                            alert('Vous devez saisir le dialplan du téléphone');
                                        } else {
                                            if ($("#telephone_login").val() == '') {
                                                alert('Vous devez saisir le login du téléphone');
                                            } else {
                                                if ($("#telephone_pass").val() == '') {
                                                    alert('Vous devez saisir le mot de passe du téléphone');
                                                } else {
                                                    $.ajax({
                                                        type: 'get',
                                                        url: Routing.generate('phone_verif', {extension: $("#telephone_extension").val()}),
                                                        success: function (data) {
                                                            if (data.existe == 1) {
                                                                alert('Téléphone non valide');
                                                            } else {
                                                                $("form").submit();
                                                            }
                                                        },
                                                        
                                                        error: function() { alert('Erreur lors de l'appel AJAX'); }
                                                    });
                                                }
                                            }
                                        }
                                    }
                                }
    </script>


{% endblock %}

功能验证电话：

public function Phoneverif1(Request $request , $extension){
    if ($request->isXmlHttpRequest()) {
        $em = $this->getDoctrine()->getManager();
        $phone = $em->getRepository(Phones::class)->findOneByExtension($extension);
        if ($phone) {
            $existe = 1;
        } else {
            $existe = 0;
        }
        $response = new JsonResponse();
        return $response->setData(array('existe' => $existe));
    } else {
        throw new \Exception('Erreur');
    }  

   }

我的fosjsrrouting配置：
config/packages/routing.yaml：

framework:
    router:
        utf8: true

        # Configure how to generate URLs in non-HTTP contexts, such as CLI commands.
        # See https://symfony.com/doc/current/routing.html#generating-urls-in-commands
        #default_uri: http://localhost
fos_js_routing:
    routes_to_expose: [ phone_verif ]

config/routes/fos_js_routing.yaml：

fos_js_routing:
  resource: "@FOSJsRoutingBundle/Resources/config/routing/routing.xml"

routes.yaml：

verification_telephone:
 path: /verification/phone/{extension}
 controller: App\Controller\TelephoneController::Phoneverif1
 options:
     expose: true