发布功能完成

• 编写要求登录的装饰器

from functools import wraps

def loginFirst(func): #参数是函数

@wraps(func)

      def wrapper(*args, ** kwargs): #定义个函数将其返回

          #要求登录

          return func(*args, ** kwargs)

      return wrapper #返回一个函数

• 应用装饰器，要求在发布前进行登录，登录后可发布。

@app.route('/question/',methods=['GET','POST'])
@loginFirst
def question():

 

• 建立发布内容的对象关系映射。

class Question(db.Model):

• 完成发布函数。

保存到数据库。

重定向到首页。

 

from flask import Flask, render_template,request,redirect,url_for,session
from flask_sqlalchemy import SQLAlchemy
import config
from functools import wraps
from datetime import datetime
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))
# db.create_all()
class Fankui(db.Model):
    __tablename__ = 'fankui'
    id = db.Column(db.Integer,primary_key=True,autoincrement=True)

    biaoti = db.Column(db.String(100),nullable=False)
    questionDetail = 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('fankui'))

db.create_all()

# user=User(username='mis01',password='77',nickname='55')
# db.session.add(user)
# db.session.commit()


# user=User.query.filter(User.username=='mis14').first()
# user.password='5201314'
# db.session.commit()
#
# user=User.query.filter(User.username=='mis14').first()
# db.session.delete(user)
# db.session.commit()


# user=User.query.filter(User.username=='mis00').first()
# user.password='5201314'
# print(user.username)





@app.route('/')
def danghangye():
    return render_template('danghangye.html')


@app.route('/login/',methods=['GET','POST'])
def login():
    if request.method =='GET':
        return render_template('login.html')

    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.permanent = True
                return redirect(url_for('danghangye'))
            else:
                return '密码错误'
        else:
            return '用户不存在'

@app.context_processor
def mycontext():
    usern = session.get('user')
    if usern:
        return {'username' : usern}
    else:
        return {}






@app.route('/base/')
def base():
    return render_template('base.html')


@app.route('/register/',methods=['GET','POST'])
def register():
    if request.method == 'GET':
         return render_template('register.html')
    else:
        username = request.form.get('username')
        password = request.form.get('password')
        nickname = request.form.get('nickname')
        user = User.query.filter( User.username == username).first()
        if user:
            return'username existed'
        else:
            user = User(username=username,password=password,nickname=nickname)
            db.session.add(user)
            db.session.commit()
            return redirect(url_for('login'))



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('/fankui/',methods=['GET','POST'])
@loginFirst
def fankui():
    if request.method == 'GET':
        return render_template('fankui.html')
    else:
        biaoti = request.form.get('biaoti')
        questionDetail = request.form.get('questionDetail')
        author_id = User.query.filter(User.username == session.get('user')).first().id
        fankui = Fankui(biaoti=biaoti, questionDetail=questionDetail, author_id=author_id)
        db.session.add(fankui)
        db.session.commit()
        return redirect(url_for('danghangye'))



@app.route('/logout/')
def logout():
    session.clear()
    return redirect(url_for('danghangye'))




@app.route('/danghangye/')
def danghangy():
    return render_template('danghangye.html')


if __name__ == '__main__':
    app.run()

　　

{% extends'danghangye.html' %}
{% block title %}反馈页面{% endblock %}
{% block head %}
<script src="{{url_for('static',filename='js/wenti.js')}}"></script>

{% endblock %}
{% block main %}
 <form action="{{url_for('fankui')}}" method="post">
<div id="container" align="center">

        <div class="form-group">

            <div><label for="biaoti">标题</label></div>
            <textarea class="form-control" id="biaoti" cols="30" rows="1" name="biaoti"></textarea>
        </div>
        <div class="form-group">
            <div><label for="questionDetail">详情</label></div>
            <textarea class="form-control" id="questionDetail" cols="30" rows="5" name="questionDetail"></textarea>
        </div>
        <div class="input-area">
            <button onclick="return　fnLogin()">fabu</button>

        </div>

</div>
 </form>
{% endblock %}