完成个人中心—导航标签

1. 个人中心—视图函数带标签页面参数tag
   @app.route('/usercenter/<user_id>/<tag>')
   def usercenter(user_id, tag):
      if tag == ‘1':
          return render_template('usercenter1.html', **context)
   
   
2. 个人中心—导航标签链接增加tag参数
   <li role=“presentation”><a href=“{{ url_for(‘usercenter’,user_id = user.id,tag = ‘1’) }}">全部问答</a></li>
3. 个人中心—有链接到个人中心页面的url增加tag参数
   u <a href="{{ url_for('usercenter',user_id = session.get('userid'), tag=1) }}">{{ session.get('user') }}</a>

   @app.route('/usercenter/<user_id>/<tag>')
   @loginFirst
   def usercenter(user_id,tag):
       user = User.query.filter(User.id == user_id).first()
       context = {
           'uername':user.username,
           'question':user.question,
           'comments':user.comments,
           'user':user
   
       }
       if tag == '1':
           return render_template('usercenter1.html', **context)
       elif tag == '2':
           return render_template('usercenter2.html',**context)
       else:
           return render_template('usercenter3.html',**context)

   % block body %}
       <ul class="zx">
           <li style="float: left;margin: 10px;list-style: none;" role="presentation"><a href="{{ url_for('usercenter',user_id = user.id,tag = '1') }}">question</a></li>
           <li style="float: left;margin: 10px;list-style: none;" role="presentation"><a href="{{ url_for('usercenter',user_id = user.id,tag = '2') }}">comments</a></li>
           <li style="float: left;margin: 10px;list-style: none;" role="presentation"><a href="{{ url_for('usercenter',user_id = user.id,tag = '3') }}">infomation</a></li>
       </ul>
       {% block usercenter %}
   
       {% endblock %}
   
   
   {% endblock %}
   
   

   {% for foo in comment %}
                   <ul style="padding-left: 0px;margin-bottom: 0px;">
                       <li style="width: 900px">
                           <a href="{{ url_for('usercenter',user_id = foo.author.id,tag=1)}}">{{ foo.author.username }}</a>
                           <span class="badge">评论时间:{{ foo.creat_time }}</span>
                           <p>{{ foo.detail }}</p>
                       </li>
                   </ul>
   
               {% endfor %}

   <div class="meta">
        <a class="collection-tag" target="_blank" href="/c/1hjajt">{{ biaoqian }}</a>
        <a href="{{ url_for('usercenter',user_id = foo.author_id,tag = 1) }}">{{ foo.author.username }}评论：({{ foo.comments|length}})</a>
   
    </div>