从首页问答标题到问答详情页

1. 主PY文件写视图函数，带id参数。 

   @app.route('/detail/<question_id>')
   def detail(question_id):
       quest = 
       return render_template('detail.html', ques = quest) 

2. 首页标题的标签做带参数的链接。
         {{ url_for('detail',question_id = foo.id) }}
   
   
3. 在详情页将数据的显示在恰当的位

   {% extends 'base.html' %}
   {% block title %}问答详情{% enfblock %}
   
   {% block main %}
        <div class="page-header">
            <h3>{{ quse.title }} <br><small>{{ ques.suthor.username }} <span class="badge">{{ques.creat_time}}</span></small></h3>
        </div>
        <p class="lead">{{ques.detail}}</p>
        <hr>
   
   
       <form action="{{ url_for('comment')}}"method="post" style="" >
       <h4>评论：({{ ques.comments|length}})</h4>
   
        <ul class="list-group" style="">
   
   
        </ul>
    {% endblock %}

   {% extends'text.html'%}
   {% block title %}首页{% endblock %}
   
   {% block main %}
       <img src= "{{url_for('static',filename='images/qalogo.png')}}"alt = "qa" >
       <ul class="list-graup"style = "" >
            {% for foo in questions %}
                <li class="list-group-item" >
                     <span class ="glyphicon glyphicon-leaf" aria-hidden="true"></span >
                      <a href = "{{url_for('detail')}}" > {{foo.title}} </a>
   
                      <p style = "" > {{foo.detail}} </p >
                        <span class="glyphicon glyphicon-user" aria-hidden="true" > </span >
                       <a href="{{url_for('userconter',user_id=foo.author_id)}}">{{foo.author.username}}评论：({{foo.comments|length}})</a>
   
                       <span class="badge">{{foo.creat_time}}</span>
                </li>
   
             <% endfor % >
        </ul>
   {% endblock %}

    

   置。 

   {{ ques.title}}
   {{ ques.id  }}{{  ques.creat_time }}

   {{ ques.author.username }} 
   {{ ques.detail }}

4. 建立评论的对象关系映射：

   class Comment(db.Model):
       __tablename__='comment'

5.  尝试实现发布评论