评论列表显示及排序，个人中心显示

<h4>评论:({{ ques.comments|length }}) </h4>
            <ul class="list-group">
                {% for foo in ques.comments %}
                <li class="list-group-item">
                    <span class="glyphicon glyphicon-heart-empty" aria-hidden="true"></span>
                    <a href="{{url_for(‘usercenter‘,user_id = foo.author.id) }}">{{foo.author.username}}</a>
                    <span class="badge">{{foo.creat_time}}</span>
                    <p> {{foo.detail }}</p>
                </li>
                {% endfor %}
            </ul>

 question = db.relationship(‘Question‘,backref = db.backref(‘comments‘,order_by=creat_time.desc))

    <h4>评论:({{ ques.comments|length }}) </h4>

@app.route(‘/usercenter/<user_id>‘)
@loginFrist
def usercenter(user_id):
    user = User.query.filter(User.id == user_id).first()
    context = {
        ‘username‘:user.username,
        ‘questions‘:user.questions,
        ‘comments‘:user.comments
    }
    return render_template(‘usercenter.html‘,**context)

{% extends ‘base.html‘ %}
{% block title %} 个人中心  {% endblock %}

{% block main %}
    <div class="page-header">
        <h3><span class="glyphicon glypgicon-user" aria-hidden="true"></span>
        {{username }} <br> <small> <span class="badge"></span></small></h3>
        <ul class="list-group">
            {% for foo in questions %}
            <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 > {{foo.detail}}</p>
            </li>
            {% endfor %}
        </ul>

    </div>
    <div class="page-header">
        <h3><span class="glyphicon glypgicon-user" aria-hidden="true"></span>
        {{username }} <br> <small> <span class="badge"></span></small></h3>
        <ul class="list-group">
            {% for foo in ques.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> {{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">
            <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>
        </ul>

    </div>

{% endblock %}