阻止我的侧栏上的按钮，直到用户登录？

Question

使用Django和HTML，如何阻止选项卡栏上的按钮，直到有人登录

我的侧边栏：

<div id="mySidebar" class="sidebar">
  <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
  <a href="/">Home</a>
  <a href="/accounts/login">Login</a>
  <a href="#">Profile</a>
  <a href="/upload">Upload</a>
  <a href="/top_photos">Top Photos</a>
  <a href="/aboutus">About Us</a>
  <a href="/contact">Contact Us</a>
</div>

阻止语句：

{% block content %}
{% if user.is_authenticated %}
  <h1 style="text-align:right">Welcome {{ user.username }}!</h1>

{% else %}
  <div class="c">
  <p>You are not logged in, log in to recolor a photo</p>
  <a href="/upload">
{% endif %}
{% endblock %}

Answer 1

试试这个：

{% block content %}
{% if request.user.is_authenticated %}
  <h1 style="text-align:right">Welcome {{ user.username }}!</h1>

{% else %}
  <div class="c">
  <p>You are not logged in, log in to recolor a photo</p>
  <a href="/upload">
{% endif %}
{% endblock %}