当用户登录时，我试图在导航栏中显示某些内容，但是 {% if user.is_authenticated %} 将其添加到html时不起作用

<div class="collapse navbar-collapse" id="navbar">
  <ul class="navbar-nav mr-auto">
    {% if request.user.is_authenticated %}
    <li class="nav-item active">
      <a class="nav-item nav-link" id="home" href="/home">Home</a>
    </li>
    <li class="nav-item active">
      <a class="nav-item nav-link" id="logOut" href="/logout">Log-out</a>
    </li>
    {% else %}
    <li class="nav-item active">
        <a class="nav-item nav-link" id="login" href="/login">Login</a>
    </li>
      <li class="nav-item active">
        <a class="nav-item nav-link" id="signUp" href="/sign-up">Sign-up</a>
      </li>
    {% endif %}  
  </ul>