个人中心标签页导航

1. 新页面userbase.html,用<ul ><li role="presentation"> 实现标签页导航。
   <ul class="nav nav-tabs">
     <li role="presentation"><a href="#">Home</a></li>
     <li role="presentation"><a href="#">Profile</a></li>
     <li role="presentation"><a href="#">Messages</a></li>
   </ul>
   1. 让userbase.html继承base.html。
      重写title,head,main块.
      将上述<ul>的样式放在head块，<ul>放在main块中.
      定义新的块user。
      

      {% extends'base.html' %}
      {% block title %}个人中心{% endblock %}
      
      {% block head %}
          <style>
              .nav_ul li{
                  list-style: none;
                  float: left;
                  margin: 10px;
              }
          </style>
      {% endblock %}
      
      {% block main %}
            <ul class="nav_ul">
                <li role="persentation"><a href="#">Questions</a> </li>
                <li role="persentation"><a href="#">Comments</a> </li>
                <li role="persentation"><a href="#">Info</a> </li>
            </ul>
      {% endblock %}

       

   2. 让上次作业完成的个人中心页面，继承userbase.html，原个人中心就自动有了标签页导航。

      usercenter
      {% extends "userbase.html" %}
      
      {% block usercenterbody %}
          <div class="page-header">
              <h3><span class="glyphicon glyphicon-user" aria-hidden="true"></span>{{ username }}<br><small>全部问答<span class="badge>"></span> </small> </h3>
              <ul class="list-group"style="margin:10px">
                  {% for foo in comments %}
                      <li class="list-group-item">
                          <span class="glyphicon glyphicon-heart-empty" aria-hidden="true"></span>
                          <a href="#">{{ foo.user.username }}</a>
                          <span class="badge">{{ foo.creat_time }}</span>
                          <p style="align-content: center">{{ foo.detail }}</p>
                      </li>
                  {% endfor %}
              </ul>
          </div>
      
          <div class="page-header">
              <h3><span class="glyphicon glyphicon-user" aria-hidden="true"></span>{{ user }}<br><small>全部评论<span class="badge>"></span> </small> </h3>
              <ul class="list-group"style="margin:10px">
                  {% for foo in comments %}
                      <li class="list-group-item">
                          <span class="glyphicon glyphicon-heart-empty" aria-hidden="true"></span>
                          <a href="#">{{ foo.user.username }}</a>
                          <span class="badge">{{ foo.creat_time }}</span>
                          <p style="align-content: center">{{ foo.detail }}</p>
                      </li>
                  {% endfor %}
              </ul>
      
          </div>
      
          <div class="page-header">
              <h3><span class="glyphicon glyphicon-user" aria-hidden="true"></span>{{ user }}<br><small>个人信息<span class="badge>"></span> </small> </h3>
              <ul class="list-group"style="margin:10px">
                  <li class="list-group-item">user：{{ username }}</li>
                  <li class="list-group-item">number：</li>
                  <li class="list-group-item">nickname：</li>
              </ul>
          </div>
      {% endblock %}

       

      
      
      
   3. 制作个人中心的三个子页面，重写userbase.html中定义的user块，分别用于显示问答、评论、个人信息。
      
      
   4. 思考 如何实现点标签页导航到达不同的个人中心子页面。

      {% extends 'userbase.html' %}
      
      {% block user %}
      <div>
         Questions
      </div>
      
      {% endblock %}

      {% extends 'userbase.html' %}
      {% block user %}Comments
         <div class="page-header">{{ user.username }}</div>
      
      {% endblock %}

      {% extends'userbase.html' %} 
       {%block user %}   
           <div class="page-header">{{ user.username }}</div>
      {% endblock %}