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。

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

 {% for foo in question%}

        <div id="header" style="background-color: antiquewhite;width:400px "><h2 align="center" style="margin-bottom:0;">评论大杂烩</h2></div>
        <div id="content" style="background-color: beige;height:150px;width:400px;float: left;">

        <div class="listbox">

        <ul class="alist" style="margin: 5px; list-style: none">
            <li id='001' class="list">
                <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span>
                <p>TITLE:<a href="{{ url_for('detail',question_id = foo.id) }}">{{ foo.title }}</a></p>
                <p>NAME:<a href="#">{{ foo.author.username }}</a></p>
                <p>COMMENT:{{ foo.detail }}</p>
                <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span>


                <p style="align-content: center"><span class="badge" style="align-content: center">TIME:{{ foo.creat_time }}</span></p>
            </li>
        </ul>

        </div></div>
            <div id="footer" style="background-color: bisque;clear: both;text-align: center;width:400px "><i>版权 @Doublewhere</i></div></div>

    {% endfor %}

 

class Comment(db.Model):  #.建立评论的对象关系映射
    __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'))
    creat_time = db.Column(db.DateTime, default=datetime.now)
    detail=db.Column(db.Text,nullable=False)
    question=db.relationship('Question',backref=db.backref('comments'))
    author=db.relationship('User',backref=db.backref('comments'))