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 %}
   
   
2. 所有评论排序
   uquestion = db.relationship('Question', backref=db.backref('comments', order_by=creat_time.desc))
   
   
3. 显示评论条数
   {{ ques.comments|length }}
   
   
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

5.各个页面链接到个人中心

主PY文件：

class Pinglun(db.Model):
    __tablename__='pinglun'
    id=db.Column(db.Integer,primary_key=True,autoincrement=True)
    userid=db.Column(db.Integer,db.ForeignKey('user.id'))
    tougaoid=db.Column(db.Integer,db.ForeignKey('tougao.id'))
    time=db.Column(db.DateTime,default=datetime.now)
    content=db.Column(db.Text,nullable=False)
    tougao=db.relationship('Tougao',backref=db.backref('pinglun'),order_by=time.desc)
    author=db.relationship('User',backref=db.backref('pinglun'))



@app.route('/pinglun',methods=['POST'])
@log
def pinglun():
    pl=request.form.get('pingluntext')
    tougao_id=request.form.get('tougaoid')
    user_id=User.query.filter(User.username==session.get('user')).first().id
    pinglun=Pinglun(userid=user_id,tougaoid=tougao_id,content=pl)
    db.session.add(pinglun)
    db.session.commit()
    return redirect(url_for('digital',tougao_id=tougao_id))

@app.route('/author/<user_id>')
def author(user_id):
    user=User.query.filter(User.id==user_id).first()
    context={
        'user':user,
        'tougao':user.tougao,
        'pinglun':user.pinglun
    }
    return render_template('author1.html',**context)

HTML文件（authorbase）：

{% extends "base.html" %}


{% block head %}{% endblock %}

{% block main %}

    <div class="container">
        <div class="row clearfix divcolor">
            <div class="col-md-8 column">
                <h2>{{ user.username }}</h2>
                <p>投稿总数:{{ tougao|length }}&nbsp;&nbsp;&nbsp;评论数量:{{ pinglun|length }}</p>
                <hr>
                <ul class="nav nav-pills" role="tablist">
                    <li class="active"><a href="#">全部投稿</a></li>
                    <li><a href="#">全部评论</a></li>
                    <li><a href="#">用户信息</a></li>
                </ul>
            <br>
                {% block author %}{% endblock %}
            </div>
            <div class="col-md-4 column">
            </div>
        </div>
    </div>

{% endblock %}

HTML文件（author1）：

{% extends "authorbase.html" %}
{% block title %}个人中心{% endblock %}

{% block head %}{% endblock %}

{% block author %}


            <div>
                <ul>
                {% for tg in tougao %}
                <a href="{{ url_for('digital',tougao_id=tg.id) }}" class="list-group-item list-group-item-light">
                    <li>
                        <div class="page-header">
                         <h3>{{ tg.title }}</h3>
                         <p><span class="glyphicon glyphicon-user">{{ tg.author.username }}</span> <span class="glyphicon glyphicon-time">{{ tg.time }}</span></p>
                        </div>
                    </li>
                </a>
                {% endfor %}
            </ul>
            </div>
{% endblock %}

HTML文件（文章详情页）：

{% extends "base.html" %}
{% block title %}标题{% endblock %}

{% block main %}
    <div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column divcolor" >

            <div class="page-header">
                <h1>
                    {{ quest.title }}
                </h1>
                    <small><a href="{{ url_for('author',user_id=quest.author.id) }}"><span class="glyphicon glyphicon-user">{{ quest.author.username }}</span></a> <span class="glyphicon glyphicon-time">{{ quest.time }}</span></small>
            </div>

            <p>
                {{ quest.content }}
            </p>
            <hr>

            <form class="form-horizontal" role="form"  action="{{ url_for('pinglun') }}" method="post">
                <div class="form-group">
                    <label for="toutaotext" class="col-sm-2 control-label">评论</label>
                    <div class="col-sm-10">
                        <textarea id="pingluntext" rows="5" cols="100" name="pingluntext"></textarea>
                        <input name="tougaoid" type="hidden" value="{{ quest.id }}"  id="tougaoid">
                    </div>
                </div>
                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-10">
                        <button type="submit" class="btn btn-success">评论</button>
                    </div>
                </div>
            </form>
        <h4>评论（{{ quest.pinglun|length }}）：</h4>


                <ul>
                    {% for pl in quest.pinglun %}
                        <li class="list-group-item">
                            <p><a href="{{ url_for('author',user_id=pl.author.id) }}"><span class="glyphicon glyphicon-user"></span>{{ pl.author.username }}</a></p>
                             <p class="text-right"><span class="label label-default">{{ pl.time }}</span></p>
                            <h4>{{ pl.content }}</h4>
                        </li>
                    {% endfor %}
                </ul>

        </div>
    </div>
</div>
{% endblock %}

效果图：