Question

如何将var从控制器传递到父模板（base.html.twig）？我已经在我的控制器中有一个返回语句到一个名为login的页面，并尝试用我的var添加另一个return语句，如下所示：

$session = $request->getSession();
return $this->render('login.html.twig');
return $this->render('base.html.twig', array('session'=>$session));

但是当我重新加载页面时，我收到错误，该会话未定义。

我希望在登录后使用会话参数进行调整导航。在此先感谢，希望有人可以提供帮助：）

更新：这是我的模板：

<!DOCTYPE html>
<html lang="de">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- Die 3 Meta-Tags oben *müssen* zuerst im head stehen; jeglicher sonstiger head-Inhalt muss *nach* diesen Tags kommen -->
    <meta name="description" content="">
    <meta name="author" content="">

    <title>{% block title %}Welcome{% endblock %}</title>

    <!-- Bootstrap-CSS -->
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
     <link href="{{ asset('css/grund.css')}}" rel="stylesheet">
    {% block stylesheets %}{% endblock %}
        <link rel="icon" type="image/x-icon" href="{{ asset('favicon.ico') }}" />



    <!-- Nur für Testzwecke. Kopiere diese Zeilen nicht in echte Projekte! -->
    <!--[if lt IE 9]><script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
    <script src="../../assets/js/ie-emulation-modes-warning.js"></script>

    <!-- Unterstützung für Media Queries und HTML5-Elemente in IE8 über HTML5 shim und Respond.js -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>

  <body>

    <nav class="navbar navbar-inverse navbar-fixed-top">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Navigation ein-/ausblenden</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="{{path('homepage')}}">Test-Projekt</a>
        </div>

        <div id="navbar" class="collapse navbar-collapse">
          <ul class="nav navbar-nav">
             {% if session is null %}
            <li><a href="{{path('homepage')}}">Home</a></li>
            <li><a href="{{path('anmelden')}}">Anmelden</a></li>
            <li><a href="{{path('logout')}}">Abmelden</a></li>
            {{% endif %}}
          </ul>
        </div><!--/.nav-collapse -->
      </div>
 </nav>

    <div class="container">
        <div class="row">
            <div class="col-md-12">
                {% block body %}{% endblock %}
            </div>
        </div>
    </div>
{% block javascripts %}
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
{% endblock %}
    <!-- Bootstrap-JavaScript
    ================================================== -->
    <!-- Am Ende des Dokuments platziert, damit Seiten schneller laden -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="../../dist/js/bootstrap.min.js"></script>
    <!-- IE10-Anzeigefenster-Hack für Fehler auf Surface und Desktop-Windows-8 -->
    <script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>
  </body>
</html>

这是我的login.html.twig

{% extends 'base.html.twig' %}
{% block title %}Anmeldung{% endblock %}
{% block body %}
    <h1 class="page-header">Anmeldung</h1>
    {% if error %}
    <div>{{ error.messageKey|trans(error.messageData, 'security')}}</div>
{% endif %}
    <div class='well' id='logindiv'>
        <form action="{{ path('anmelden') }}" method="post" class="form-horizontal">
            <div class="form-group">
            <label for="_username" class="control-label" id="lblname">Benutzername:</label>
            <input type="text" id="username" name="_username" />
            </div>
            <div class="form-group">
            <label for="_password" class="control-label" id="lblpwd">Passwort:</label>
            <input type="password" id="passwort" name="_password" />
            </div>
            <input type="hidden" value="/homepage" name="_target_path" />
            <button type="submit" class="btn btn-default">anmelden</button>
        </form>
    </div>
{% endblock %}

这就是我的导航看起来像渲染：

Answer 1

你错过了一个背叛者，看：

return $this->render('base.html.twig, array('session'=>$session));

与

相比

return $this->render('base.html.twig', array('session'=>$session));

symfony3将变量传递给父模板

1 个答案: