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：
1. <form>中设置 action和method="post"
2. <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

from flask import Flask
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(20))

db.create_all()

@app.route('/')
def hello_world():
    return 'Hello World!'


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

<body>
{% block main %}
    <div class="box">
        <h2>注册</h2>
        <form action="{{ url_for('sign_up') }}" method="post">

        <div class="input_box">
            <input id="uname" class="sign" type="text" placeholder="请输入用户名" name="username">
        </div>
         <div class="input_box">
            <input id="unick" class="sign" type="text" placeholder="请输入昵称" name="nickname">
        </div>
        <div class="input_box">
            <input id="upass" class="sign" type="password" placeholder="请输入密码" name="password">
        </div>
        <div class="input_box">
            <input id="upas" class="sign" type="password" placeholder="请再输入一次密码" >
        </div>
        <div id="error_box"><br>
        </div>
        <div class="input_box">
            <input type="submit" name="commit" value="注册" class="sign-in-button" data-disable-with="注册" onclick="myRegist()">

            </div>
</form>
        </div>


{% endblock %}
</body>

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(20))
db.create_all()
@app.route('/')
def index():
    return render_template('index.html')

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


@app.route('/login/', 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:
            return u'username existed.'
        else:
            user1=User(username =usern,password=passw)
            db.session.add(user1)
            db.session.commit()
     return redirect(url_for('login'))

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

posted on 2017-11-22 15:13 lishanting 阅读(167) 评论(0) 收藏举报