评论列表显示及排序，个人中心显示

1. 显示所有评论
   {% for foo in ques.comments %}

   <ul class="list">
          {% for foo in ques.comments %}
          <li class="post_item">
              <a href="{{ url_for(‘usercenter‘,user_id=foo.author.id) }}" class="light">{{foo.author.username }}</a>
              <br>
              <img width="48" height="48" class="pf" src="https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=4066191998,32277144&fm=27&gp=0.jpg" alt="">
              <p class="post_item">{{ foo.detail }}</p>
              <span class="foot">发布于  {{ foo.create_time }}</span>
          </li>
          <hr>
   {% endfor %}
      </ul>

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

   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‘))
       create_time = db.Column(db.DateTime, default=datetime.now)
       detail=db.Column(db.Text,nullable=False)
       question= db.relationship(‘Question‘,backref=db.backref(‘comments‘,order_by=create_time.desc))
       author= db.relationship(‘User‘, backref=db.backref(‘comments‘))

3. 显示评论条数
   {{ ques.comments|length }}

   <a href="#" class="post_item_foot">评论：({{ foo.comments|length }})</a>

4. 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

@app.route(‘/usercenter/<user_id>‘)
@loginFirst
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)

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

{% block head %}
<link rel="stylesheet" type="text/css" href="{{ url_for(‘static‘,filename=‘css/detail.css‘) }}">
{% endblock %}
{% block main %}
    <div class="post">
    <h3 class="title "><span>{{ username }}<br><small>全部问答</small></span></h3>
    <ul class="list">
         {% for foo in questions %}
       <li class="post_item">
           <a href="#" class="light">{{foo.author.username }}</a>
           <img width="48" height="48" class="pf" src="https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=4066191998,32277144&fm=27&gp=0.jpg" alt="">
           <p class="post_item">{{ foo.detail }}</p>
           <span class="foot">发布于  {{ foo.create_time }}</span>
       </li>
       <hr>
{% endfor %}
    </ul>
    </div>

    <div class="post">
    <h3 class="title "><span></span>{{ user }}<br><small>全部评论  <span></span></small></h3>
    <ul class="list">
         {% for foo in comments %}
       <li class="post_item">
           <a href="#" class="light">{{foo.author.username }}</a>
           <img width="48" height="48" class="pf" src="https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=4066191998,32277144&fm=27&gp=0.jpg" alt="">
           <p class="post_item">{{ foo.detail }}</p>
           <span class="foot">发布于  {{ foo.create_time }}</span>
       </li>
       <hr>
{% endfor %}
    </ul>
    </div>

    <div class="post">
        <h3 class="title "><span></span>{{ user }}<br><small>个人信息  <span></span></small></h3>
         <ul>
             <li class="post_item">用户：{{ username }}</li>
             <li class="post_item">编号：</li>
             <li class="post_item">昵称：</li>
             <li class="post_item">文章数：</li>
    </ul>
    </div>

{% endblock %}

5.各个页面链接到个人中心