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。

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

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

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

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

@app.route('/detail/<post_id>')
def detail(post_id):
    post=Post.query.filter(Post.id==post_id).first()
    return render_template('detail.html', pos=post) # 页面上用pos，函数用post，传递到pos

{% block main %}
    <!--<img src="{{ url_for }}">-->
    <ul class="list-group">
    {% for foo in post %}
       <li class="list-group-item" >
           <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span>
           <a href="#">{{ foo.author.username }}</a>
           <br>
           <a href="{{url_for('detail',post_id=foo.id)}}">{{foo.title}}</a>
           <span class="badge">{{ foo.creat_time }}</span>
           <p style="">{{ foo.detail }}</p>

       </li>
    {% endfor %}
    </ul>

{% extends 'jianshu.html' %}
{% block title %}问答详情{% endblock %}

{% block main %}
   <div class="page-header">
   <h3>题目:{{ pos.title }}
       <br><small>作者:{{ pos.author_id }}发布时间：{{ pos.creat_time }}
       </small></h3>
   </div>
    <p class="lead">详情:{{ pos.detail }} </p>
    <br>
    <form action="{{ url_for('post') }}" method="post"></form>
    <div class="form-group">
        <textarea name="new_comment" id="new_comment"  rows="5" placeholder="请写下你的评论"></textarea>
    </div>
    <button type="submit" class="btn btn-default" onclick="">发送</button>
  </form>
    <ul class="list-group" style="margin: 10px"></ul>
{% endblock %}