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)

首页标题的标签做带参数的链接。
{{ url_for('detail',question_id = foo.id) }}
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 }}
建立评论的对象关系映射：

class Comment(db.Model):
__tablename__='comment'
尝试实现发布评论。

{% extends 'index.html' %}
{% block title %}问答详情{% endblock %}
{% block main %}
    <body style="url(../image/picture.jpg) no-repeat" >
         <div class="container">
            <div class="box">
                <h3 style="font-family:宋体;text-align: left;font-size: 40px">详情页</h3>
        </div>
             <div>
                 <h2>{{ ques.question }}<br><small>{{ ques.author.username }} <span class="badge">{{ ques.creat_time }}</span></small></h2></div>
             问题详情：<p class="lead">{{ ques.questionDetail }}</p>
             <p class="location">评论</p>
 
        <hr>
        <form action="{{ url_for('question') }}" method="post">
            <div>
            <textarea class="form-control" id="new_comment" rows="6" placeholder="write your comment"style="height:200px;800px" ></textarea><br></div>
        <button type="submit" class="fabu"style="100px">发布</button>
        </form>
        <ul class="list-group" style="margin: 10px"></ul>
        </div>
    </body>
{% endblock %}

class Comment(db.Model):
    __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'))
    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'))