评论列表显示及排序，个人中心显示

            <ul class="list-group">
             {% for foo in question %}
                  <li class="list-group-item">
                    <span class="glyphicon-leaf" aria-hidden="true"></span>
                  <img id="qu" src="{{ url_for(‘static‘,filename=‘images/title.png‘)}}">
                    <a href = "#">{{ foo.author.username }}{{ foo.title }}</a>
                           <span class="badge">{{ foo.create_time }}</span>
            </li>
                {% endfor %}
            </ul>

 ‘comments‘: Comment.query.order_by(‘create_time‘).all()

<span class="tcomment">评论：({{ ques.comments|length }})</span>

{% extends ‘index.html‘ %}
{% block title %}usercenter {% endblock%}
{% block main%}

<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="">
        {% for foo in question %}
            <li class="list-group-item">
                <span class="glyphicon glyphicon-heart-empty" aria-hidden="true"></span>
                <a href="#">{{foo.author.username }}</a>
                <span class="badge">{{foo.creat_time}}</span>
                <p style="">{{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="">
          {% for foo in comments %}
            <li class="list-group-item">
                <span class="glyphicon glyphicon-heart-empty" aria-hidden="true"></span>
                <a href="#">{{foo.author.username }}</a>
                <span class="badge">{{foo.creat_time}}</span>
                <p style="">{{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="">
          <li class="list-group-item">用户：{{username}}</li>
          <li class="list-group-item">编号：</li>
          <li class="list-group-item">昵称：</li>
          <li class="list-group-item">文章篇：</li>
      </ul>
</div>

{% endblock %}

 <a href = "{{ url_for (‘userCenter‘,user_id=each.author.id) }}">{{ foo.author.username }}{{ foo.title }}</a>