标签：time add length wrap item request pull inf text
1.定义评论的视图函数
@app.route(‘/comment/‘,methods=[‘POST‘])
def comment()：
读取前端页面数据，保存到数据库中
@app.route(‘/comment/‘,methods=[‘POST‘]) def comment(): comment=request.form.get(‘new_comment‘) ques_id=request.form.get(‘question_id‘) auth_id=User.query.filter(User.username == session.get(‘user‘)).first().id comm =Comment(author_id=auth_id,question_id=ques_id,detail=comment) db.session.add(comm) db.session.commit() return redirect(url_for(‘detail‘),question_id=ques_id)
2.用<input type="hidden" 方法获取前端的"question_id"
<div class="page-header"> <h3>{{ ques.title }}<br><br> <small>作者：{{ ques.author.username }} <span class="badge">{{ ques.creat_time }}</span> </small></h3> </div> <p class="lead">{{ ques.detail }}</p> <hr> <form action="{{ url_for(‘comment‘) }}" method="post" style="margin:20px"> <div class="form-group"> <input type="text" value="{{ ques.id }}" name="question_id" hidden> <input type="text" value="{{ user.id }}" name="author_id" hidden> <textarea name="new comment" class="form-control" row="3" id="new-comment" placeholder="write your comment"></textarea> <input type="hidden" name="question_id" value="{{ ques.id }}"> </div> <button type="submit" class="btn btn-default">发送</button> </form> <hr> <h4>评论:({{ ques.comments|length}})</h4>
3.显示评论次数
<h4>评论:({{ ques.comments|length}})</h4>
4.要求评论前登录
def loginFirst(func): @wraps(func) def wrapper(*args, **kwargs): if session.get(‘user‘): return func(*args, **kwargs) else: return redirect(url_for(‘login‘)) return wrapper @app.route(‘/comment/‘,methods=[‘POST‘]) @loginFirst def comment(): if request.method == ‘POST‘: comment= request.form.get(‘detail‘) question_id = request.form.get(‘question_id‘) # author_id = request.form.get(‘author_id‘) author_id=User.query.filter(User.username==session.get(‘user‘)).first().id detail = request.form.get(‘detail‘) com = Comment(question_id=question_id, author_id=author_id, detail=detail) db.session.add(com) db.session.commit() return redirect(url_for(‘detail‘,question_id=question_id))
5.尝试实现详情页面下的评论列表显示
<ul class="list-unstyled"> {% for foo in comments %} <li class="list-group-item"> <a>{{ foo.author.username }}</a> <span class="badge pull-right">{{ foo.creat_time }}</span> <p>{{ foo.detail }}</p> <br> </li> {% endfor %} </ul>
标签：time add length wrap item request pull inf text
原文地址：http://www.cnblogs.com/lwn-blog/p/8006697.html
