javascript - 如何在服务器响应后在 Symfony2 中显示警报或信息消息而不重新加载页面

Question

我正在使用 Symfony2 为配镜师构建一个管理应用程序。当管理员将新客户添加到数据库时，我的 Controller 会检查客户名称是否重复。我想显示一个弹出对话框，询问用户是否想要添加新客户。我怎样才能实现这个？我应该使用 Ajax 吗？以下是我在本例中使用的 Controller 的示例代码:

public function nouveauAction(Request $request)
{
    $form = $this->createFormBuilder()
        ->add('nom','text')
        ->add('tel','text', array('label' => 'Nº de téléphone', 'data' => '06'))
        ->add('email','email', array('label' => 'E-mail', 'required' => false))
        ->add('date','date', array('label' => 'Date d\'ajout', 'data' => new \DateTime()))
        ->add('ajouter','submit')
        ->getForm()
    ;

    $form->handleRequest($request);

    if ($form->isValid()){

        $client = new Client();
        $client->setNomClient($form["nom"]->getData());
        $client->setTelClient($form["tel"]->getData());
        $client->setEmailClient($form["email"]->getData());
        $client->setDateEditionClient($form["date"]->getData());
        //just for now (Later we'll retrieve the username from the session)
        $em = $this->getDoctrine()->getEntityManager();
        $user = (new Utilisateur)->rechercherParPseudo($em, 'admin');
        $client->setIdUtilisateur($user);

        $em = $this->getDoctrine()->getEntityManager();

        if($client->existe($em))
        {
            //I need a popup message here : The customer you are trying to add already exists""
        }

        else
        {
            $request = $this->container->get('request');
            if($client->existeNomDouble($em)) //If the customer name is duplicate
            {
                //I need a popup message here with Yes/No buttons...
            }
            else
            {
                //Writing to the database:
                $em = $this->getDoctrine()->getEntityManager();
                $client->ajouterClient($em);

                //A notification to fade in here : "Customer successfully added"
            }


        }

    }

    return $this->render('ClientBundle:Client:nouveau.html.twig', array(
        'formAjouter' => $form->createView(),
    ));
}

Answer 1

试试这个:

Controller 端:

 $this->get('session')->getFlashBag()->add(
        'notice',
        'Customer Added!'
    );

View 侧面( Twig ):

{% for flashMessage in app.session.flashbag.get('notice') %}

<div class="alert alert-success">
    {{ flashMessage }}
</div>

{% endfor %}