完成评论功能

1. 定义评论的视图函数
   @app.route('/comment/',methods=['POST'])
   def comment()：
   读取前端页面数据，保存到数据库中
2. 用<input type="hidden" 方法获取前端的"question_id" 
3. 显示评论次数
4. 要求评论前登录
5. 尝试实现详情页面下的评论列表显示

@app.route('/comment/',methods=['POST'])
@loginFirst
def comment():
    comment=request.form.get('new_comment')
    ques_id=request.form.get('question_id')
    auth_id=User.query.filter(User.username==session.get('user')).first().id
    comm=Comment(author_id=auth_id,question_id=ques_id,detail=comment)
    db.session.add(comm)
    db.session.commit()
    return redirect(url_for('detail'),question_id=ques_id)

 

{% extends 'base.html' %}
{% block title %}Detail{% endblock %}

{% block head %}
    <link href="{{ url_for('static',filename='CSS/detail.css') }}" rel="stylesheet" type="text/css">
{% endblock %}

{% block main %}
    <div class="page-header">
        <h3>{{ ques.title }}<br><small>{{ ques.author.username }}<span class="badge">{{ ques.creat_time }}</span> </small></h3>
    </div>

    <p class="lead">{{ ques.detail }}</p>
    <hr>

    <from action="{{ url_for("comment") }}"method="post"stytle="">
        <div class="form-group">
            <textarea name="new_comment"class="form-control"rows="3"id="new=comment"placeholder="write your comment"></textarea>
            <input name="question_id"type="hidden"value="{{ ques_id }}"/>
        </div>
        <button type="submit"class="btn btn-block">发送</button>
    </from>
    <h4>评论:{{ ques.comments|length }}</h4>
    <ul class="list-group"style=""></ul>
{% endblock %}