完成注册功能

js文件： onclick函数return True时才提交表单，return False时不提交表单。

html文件：

<form>中设置 action和method="post"

from flask import Flask, render_template, request, redirect, url_for, session
from flask_sqlalchemy import SQLAlchemy


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))



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

@aqq.route('/regist/', methods=['GET', 'POST'])
def regist():
    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.passw == passw:
                session['user'] = usern
                session.permanent = True
                return redirect(url_for('base'))
        else:
            return u'error usern or passw'

            #
            # return render_template('login.html')

    @app.route('/regist/', methods=['GET', 'POST'])
    def regist():
        if request.method == 'GET':
            return render_template('.html')
        else:
            username = request.form.get('username')
            print(username)
            password = request.form.get('password')
            user = User.query.filter(User.username == username).first()
            if user:
                return 'username existed'
            else:
                user = User(username=username, password=password)

                db.session.add(user)
                db.session.commit()
                return redirect(url_for('login'))

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

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

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

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

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">


<form action="{{ url_for('denglu') }}" method="post">
    <div id="tittle"><h2 align="center">登录</h2></div>
    <div class="input_box">
        账户： <input id="uname" type="text" placeholder="请输入用户名" name="username">
    </div>
    <div class="input_box">
        密码： <input id="upass" type="password" placeholder="请输入密码" name="password">
    </div>
    <div id="error_box"><br></div>
    <div class="input_box">
        <button onclick="foLogin()">登录</button>
    </div>

    <button type="button" onclick="foLogin()"><a href="login.html">注册</a></button>
    </form>

import os

SECRET_KEY=os.urandom(24)

SQLALCHEMY_DATABASE_URI='mysql+pymysql://root:@127.0.0.1:3306/test?charset=utf8'
SQLALCHEMY_TRACK_MODIFICATTONS = False

<input> 中设置 name

主py文件中：
1. from flask import request, redirect, url_for
2. @app.route('/regist/', methods=['GET', 'POST’])

def regist():

if request.method == 'GET':

return render_template('regist.html')

else:

username = request.form.get(‘username’)#获取form中的数据

判断用户名是否存在:存在报错

不存在，存到数据库中

redirect重定向到登录页

posted @ 2017-11-21 18:40 092曹馨文阅读(153) 评论(0) 编辑收藏举报

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