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)
@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)
2.首页标题的标签做带参数的链接。 {{ url_for('detail',question_id = foo.id) }}
{% extends'base.html' %} {% block title %} 首页 {% endblock %} {% block head %} <script src="{{url_for('static',filename='js/base.js') }}" type="text/javascript"></script> <link href="{{ url_for('static' ,filename='css/base.css') }}" rel="stylesheet" type="text/css"> {% endblock %} {% block main %} {% for foo in question %} <body id="myBody"> <div id="gufeng"> <ul class="list" > <li>用户名：{{ foo.author.username }}</li> <a href="{{ url_for("detail",question_id=foo.id) }}">标题：{{ foo.title }}</a> <li class="">问题:{{ foo.detail }}</li> <li class="">时间:{{ foo.time }}</li> </ul> </div> {% endfor %} <footer> <div class="footer_box"> Copyright@2017-2027 个人版权，版权所有 作者：JZX telephone:0000-1234567 mobile phone:11111111111 </div> </footer> {% endblock %}
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 }}
{% extends "base.html" %} {% block title%}详细内容{% endblock %} {% block main %} <body bgcolor="#ffd700"> <div class="GuFeng"> { <form action="{{ url_for('/detail/<question_id>') }}" method="post">} <h2>标题:{{ ques.title }}</h2><br> <h3>用户名：{{ ques.author.username }}</h3><br> <h3> 发布时间：{{ ques.create_time }}</h3> <p>内容：{{ ques.detail }}</p> <hr> <textarea class='talk'rows="10"id="detail"name="detail"></textarea> <br><input type="submit" value="发布"style="100px;height:50px;font-size:50px"> <p>评论：</p> <table border=5 style="background: gold"width="50"> <tr><td>评论内容</td></tr> <tr><td>评论内容</td> </tr> <tr><td>评论内容</td></tr> </tr> </table> </div> </body> {% endblock %}
4.建立评论的对象关系映射：
class Comment(db.Model): __tablename__='comment'
class Comment(db.Model): __tablename__ = 'commment' 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')) detail=db.Column(db.Text,nullable=False) time = db.Column(db.DateTime, default=datetime.now) question=db.relationship('Question',backref=db.backref('comments')) author=db.relationship('User',backref=db.backref('comments'))
5.尝试实现发布评论。