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)@app.route('/detail/<qusetion_id>') def detail(question_id): quest=Question.query.filter(Question.id==question_id).first() 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) }}
<div> <ul class="news-list"> {% for foo in questions %} <li class="list-group-item"> <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span> <a href="{{ url_for('detail',question_id=foo.id) }}" class="title">{{ foo.title }}</a> <p class="detail">{{ foo.detail }}</p> <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span> <a href="#">{{ foo.author.username }}</a> <span class="badge">{{ foo.creat_time }}</span> </li> {% endfor %} </ul> </div>
- 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 }}
<div class="page-header"> <h3>{{ques.title}}<br><small>{{ques.author.username}} <span class="badge">{{ques.creat_time}}</span> </small></h3> </div> <p class="lead">{{ques.detail}}</p> <hr> <form action="{{url_for('question')}}"method="post"> <div class="form-group"> <textarea name="new_comment"class="form-control"rows="3"id="new-comment"placeholder="write your comment"></textarea> </div> <button type="submit"class="btn btn-default">发送</button> </form> <ul class="list-group"style="margin:10px"></ul>
-
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')) create_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'))