从首页问答标题到问答详情页
- 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。
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')) detail=db.Column(db.Text,nullable=False) creatTime=db.Column(db.DateTime,default=datetime.now) question=db.relationship('Question',backref=db.backref('comments',order_by=creatTime.desc)) author=db.relationship('User',backref=db.backref('comments')) #db.create_all() @app.route('/') def home(): context={ 'question': Question.query.all() } return render_template('shouye.html',**context) @app.route('/question_detail/<question_id>') def question_detail(question_id): question = Question.query.filter(Question.id == question_id).first() return render_template('question_detail.html',question=question) @app.route('/comment/',methods=['GET','POST']) # @loginFirst def comment(): if request.method == 'GET': return render_template('question_detail.html') else: detail = request.form.get('detail') author_id =User.query.filter(User.username == session.get('user')).first().id #question_id=Question.query.filter(Question.authorID ==author_id).first().id #question=Question.query.filter(Question.authorID == session.get('question')).first() #user = User.query.filter(User.username == session.get('user')).first() comments = Comment(detail=detail,author_id=author_id,question_id=question_id) #comments.question=question #comments.author = user db.session.add(comments) db.session.commit() return redirect(url_for('home'))if __name__ == '__main__': app.run(debug=True)
{% extends'base.html' %} {% block title %} Home {% endblock %} {% block head %} <link rel="stylesheet" href="{{ url_for('static',filename='css/question_detail.css')}}" type="text/css"> {% endblock %} {% block main %} <body> <div class="detail"> <div class="detail_left"> <h2>{{ question.title }}</h2> <a class="username">{{ question.author.username }}</a> <span class="badge">{{ question.creatTime }}</span> <hr> <a style="white-space: pre-wrap" >{{ question.detail }}</a> <hr> <form action="{{ url_for('comment') }}" method="post"> <textarea name='detail' class="form-control" rows="6" id="questionDetail"></textarea> <br><button class="btn-default">发布</button> </form> <p>评论：({{ question.comments|length }})</p> <ul class="comment"> {% for foo in question.comments %} <span class="icon" aria-hidden="true"><img src="../static/images/icon.jpg"></span> <a href="#" class="name">{{ foo.author.username }}</a> <span class="badge2">{{ foo.creatTime }}</span> <br> <p class="neirong">{{ foo.detail }}</p> {% endfor %} </ul> </div> </div> </body> {% endblock %}
