评论列表显示及排序，个人中心显示

显示所有评论
{% for foo in ques.comments %}

<h4>评论：({{ quest.comment|length }})</h4>
     {% for foo in comments %}
            <div class="list-group">
                 <a href="" class="list-group-item active">作者：{{ foo.author.username}}</a>

                <div class="list-group-item">
                    <a href="" class="list-group-item-heading">

                    </a>
                    <p class="list-group-item-text">
                        {{foo.detail}}
                    </p>
                </div>
                <div class="list-group-item">
                     <span class="badge">发布时间:{{foo.creat_time}}</span> 发布时间
                </div>
        </div>
             {% endfor %}

1. class Comment(db.Model):
       __tablename__ = 'comment'
       id = db.Column(db.Integer, primary_key=True, autoincrement=True)
       author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
       question_id = db.Column(db.Integer, db.ForeignKey('question.id'))
       creat_time = db.Column(db.DateTime, default=datetime.now)
       detail = db.Column(db.Text, nullable=False)
       question = db.relationship('Ques', backref=db.backref('comment', order_by=creat_time.desc))
       author = db.relationship('User', backref=db.backref('comment'))

   1. 显示评论条数
      {{ ques.comments|length }}
      
      
   2. 完成个人中心

   1.个人中心的页面布局（html文件及相应的样式文件）

   2.定义视图函数def usercenter(user_id):

   3.向前端页面传递参数

   4.页面显示相应数据

   发布的全部问答

   发布的全部评论

   个人信息

   5.各个页面链接到个人中心

   {% extends 'userr.html' %}
   {% block title %}
       个人中心
   {% endblock %}
   
   {% block ab %}
   
       <div class="container">
           <div class="row clearfix">
               <div class="col-md-2 column">
               </div>
               <div class="col-md-8 column">
   
                   <ul class="list-group">
                       <li class="list-group-item" >
                           <h3 align="center">个人信息</h3>
                           <img style=" 30px" src="{{ url_for('static',filename='css/touxiang.jpg') }}" alt="64">
                           <a href="#">用户名：{{ username }}</a><br>
                           <a>文章篇数:{{ questions|length }}</a>
                           <p style="margin-left: 25%"></p><br>
                       </li>
                   </ul>
                   <ul class="list-group">
                       {% for foo in questions %}
                           <li class="list-group-item" >
                               <img style=" 30px" src="{{ url_for('static',filename='css/touxiang.jpg') }}"
                                    alt="64">
                               <a href="#">{{ username }}</a><br>
                               <a href="{{ url_for('detail',question_id=foo.id) }}">问题：{{ foo.title }}</a><br>
                               <p style="align-content: center">{{ foo.detail }}</p>
                               <span>评论数: ({{ foo.comments|length }})</span>
                               <span class="badge" style="margin-left: 60%">{{ foo.create_time }}</span>
                               <p style="margin-left: 25%"></p><br>
                           </li>
                       {% endfor %}
                   </ul>
   
                   <ul class="list-group">
                       {% for foo in comments %}
                           <li class="list-group-item">
                               <span class="badge pull-right">{{ foo.create_time }}</span>
                               <p>文章标题：{{ foo.question.title }}</p>
                               <p>评论内容：{{ foo.detail }}</p>
                               <span class="glyphicon glyphicon-user"></span>
                               <small><a>{{ foo.author.username }}</a></small>
                               <br>
                           </li>
                       {% endfor %}
                   </ul>
   
   
               </div>
               <div class="col-md-2 column">
               </div>
           </div>
       </div>
   {% endblock %}

2. 所有评论排序
   uquestion = db.relationship('Question', backref=db.backref('comments', order_by=creat_time.desc))

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