from flask import Flask,render_template,request,redirect,url_for,session
from flask_sqlalchemy import SQLAlchemy
from functools import wraps
from datetime import datetime
import config
app = Flask(__name__)
app.config.from_object(config)
db=SQLAlchemy(app)
class User(db.Model):
__tablename__ = 'user'
id = db.Column(db.Integer,primary_key=True,autoincrement=True)
username = db.Column(db.String(20),nullable=False)
password = db.Column(db.String(20),nullable=False)
nickname = db.Column(db.String(50))
class Question(db.Model):
__tablename__ = 'question'
id = db.Column(db.Integer,primary_key=True,autoincrement=True)
title = db.Column(db.String(100),nullable=False)
detail = db.Column(db.Text,nullable=False)
creat_time = db.Column(db.DateTime,default=datetime.now)
author_id = db.Column(db.Integer,db.ForeignKey('user.id'))
author = db.relationship('User',backref=db.backref('question'))
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)
creat_time = db.Column(db.DateTime, default=datetime.now)
question = db.relationship('Question', backref=db.backref('comments',order_by=creat_time.desc))
author = db.relationship('User', backref=db.backref('comments'))
db.create_all()
@app.route('/')
def shouye():
context = {
'questions': Question.query.all()
}
return render_template('shouye.html', **context)
@app.route('/denglu/',methods=['GET','POST'])
def gg():
if request.method == 'GET':
return render_template('denglu.html') #跳转登录
else:
usern = request.form.get('username')
passw = request.form.get('password')
user = User.query.filter(User.username == usern).first()
if user:
if user.password == passw:
session['user'] = usern
session.parmanent = True
return redirect(url_for('shouye'))
else:
return u'password error'
else:
return u'username is not existed'
@app.route('/zhuche/', methods=['GET','POST'])
def login ():
if request.method =='GET':
return render_template('zhuce.html')#跳转注册
else:
usern = request.form.get('username')
passw = request.form.get('password')
nickn = request.form.get('nickname')
user = User.query.filter(User.username == usern).first()
if user:
return u'username existed'
else:
user1 = User(username = usern,password = passw,nickname=nickn)
db.session.add(user1)#数据库操作
db.session.commit()
return redirect(url_for('gg'))
@app.route('/tupian/')
def hh():
return render_template('tupian.html') #跳转图片库
def loginFirst(func):
@wraps(func)
def wrapper (*args,**kwargs):
if session.get('user'):
return func(*args,**kwargs)
else:
return redirect(url_for('gg'))
return wrapper
@app.route('/xiangqing/<question_id>')
def xiangqing(question_id):
quest = Question.query.filter(Question.id == question_id).first()
return render_template('xiangqing.html',ques = quest)
@app.route('/comment',methods=['POST'])
@loginFirst
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('xiangqing',question_id=ques_id))
@app.route('/fabu/',methods=['GET','POST'])
@loginFirst
def fabu():
if request.method == 'GET':
return render_template('fabu.html')
else:
title = request.form.get('title')
detail = request.form.get('detail')
author_id = User.query.filter(User.username == session.get('user')).first().id
question = Question(title=title, detail=detail, author_id=author_id)
db.session.add(question)
db.session.commit()
return redirect(url_for('shouye')) # 跳转发布
@app.context_processor
def context():
usern = session.get('user')
if usern:
return {'username': usern }
else:
return {}
@app.route('/logout/')
def logout():
session.clear()
return redirect(url_for('shouye'))
if __name__ == '__main__':
app.run(debug=True)
{% extends 'base.html' %}
{% block xiangqingtitle %}详细问答{% endblock %}
{% block xiangqinghead %}
<link href="../static/css/xiangqing.css" rel="stylesheet" type="text/css">
{% endblock %}
{% block xiangqingbody %}
<div class="card" style="width:50rem; margin:0 auto">
<h1>详细问答</h1>
<li class="list-group-item" >
<span class="icon" aria-hidden="true"></span>
<br>
<a href="#">标题:{{ ques.title }}</a>
<br>
<a href="#">用户名:{{ ques.author.username}}</a>
<span class="badge"style="float:right">{{ ques.creat_time}}</span>
</li>
<li class="list-group-item" style="height: 10rem" >
<p>{{ ques.detail }}</p>
</li>
<form action="{{ url_for('comment') }}"method="post" >
<div class="form-group">
<textarea name="new_comment" class="form-control" rows="5" id="comment"
placeholder="请输入评论"></textarea>
<input name="question_id" type="hidden" value="{{ ques.id }}"/>
</div>
<button type="submit" >发送</button>
</form>
<li class="list-group-item"style="height:3rem">最新评论:({{ ques.comments|length }})</li>
<ul class="list-group"style="height: 50rem">
{% for foo in ques.comments %}
<li class="list-group-item">
<span class="glyphicon" glyphicon-leaf aria-hidden="true"></span>
<a href="#">用户名:{{ foo.author.username }}</a>
<br>
<a href="{{ url_for('xiangqing',question_id = foo.id) }}">标题:{{ foo.title }}</a>
<span class="badge">{{ foo.creat_time }}</span>
<br>
<p class="neirong">内容:{{ foo.detail }}</p>
</li>
{% endfor %}
</ul>
</div>
{% endblock %}
