Flask wtforms实现简单的登录注册

时间：2021-10-17 17:37:12

目录结构

Flask wtforms实现简单的登录注册

视图

# -*- coding:utf-8 -*-

# Author : Niuli

# Data : 2019-02-27 19:26

from flask import render_template

from flask import request

from flask import session

from flask import views

from flask import Blueprint

from wtforms import Form,validators,widgets

from wtforms.fields import simple,core

user_bp = Blueprint('user_bp',__name__)

#

class User(views.MethodView):

    def get(self):

        return 'hello'

user_bp.add_url_rule('/', view_func=User.as_view(name='index'))

class LoginForm(Form):

    username = simple.StringField(

        label='用户名:',

        validators=[

            validators.DataRequired(message='用户名不能为空'),

            validators.Length(min=4,max=8,message='用户名不符合规定(大于4位且小于8位)'),

        ]

    )

    password = simple.PasswordField(

        label='密码:',

        validators=[

            validators.Length(min=3,max=8,message='密码不能小于3位或大于8位'),

            validators.DataRequired(message='密码不能为空!')

        ]

    )

class Login(views.MethodView):

    def get(self):

        login_form = LoginForm()

        return render_template('login.html', loginform=login_form)

    def post(self):

        # 校验

        user_info = LoginForm(request.form)

        # 如果校验成功

        if user_info.validate():

            session['user'] = user_info.data.get('username')

            return str(session['user'])

        return render_template('login.html',loginform=user_info)

user_bp.add_url_rule('/login', view_func=Login.as_view(name='login'))

class RegForm(Form):

    username = simple.StringField(

        label='用户名: ',

        validators=[

            validators.DataRequired(message='用户名不能为空'),

        ],

        render_kw={'class': 'my_class'}  # 更改标签class

    )

    pwd = simple.PasswordField(

        label='密码: ',

        validators=[

          validators.DataRequired(message='密码不能为空'),

          validators.Length(min=4,max=8)

        ]

    )

    repwd = simple.PasswordField(

        label='确认密码: ',

        validators=[

          validators.EqualTo('pwd',message='两次密码不一致')

        ]

    )

    gender = core.SelectField(

        label='性别: ',

        choices=(

            (1,'男'),

            (2,'女')

        ),

        default=1,

        coerce=int

    )

    email = simple.StringField(

        label='邮箱: ',

        validators=[

            validators.Email(message='邮箱格式有误!')

        ]

    )

    hobby = core.SelectMultipleField(

        label='爱好: ',

        choices=(

            (1,'吃'),

            (2,'喝'),

            (3,'玩'),

            (4,'乐')

        ),

        coerce=int,

        default=(1,2)

    )

class Regist(views.MethodView):

    def get(self):

        reg_info = RegForm()

        print('*'*88)

        return render_template('reg.html',re=reg_info)

    def post(self):

        reg_info = RegForm(request.form)

        if reg_info.validate():

            return '注册成功!'

        return render_template('reg.html',re=reg_info)

user_bp.add_url_rule('/reg',view_func=Regist.as_view(name='reg'))

users

模板

<!DOCTYPE html>

<html lang="zh-CN">

<head>

    <meta http-equiv="content-Type" charset="UTF-8">

    <meta http-equiv="x-ua-compatible" content="IE=edge">

    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>Title</title>

</head>

<body>

<div id="app">

    <form action="" method="post" novalidate>

        <p>{{ loginform.username.label }}{{ loginform.username }}{{ loginform.username.errors[0] }}</p>

        <p>{{ loginform.password.label }}{{ loginform.password }}{{ loginform.password.errors.0 }}</p>

        <button>18

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