wtforms的简单示例

1、先定义一个类：

#!/usr/bin/env python

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

# Created by xxx on 2017/3/13

from wtforms import Form, BooleanField, TextField, PasswordField, validators, StringField

class RegistrationForm(Form):

    username = StringField('username', [validators.Length(min=4,max=10,message='长度必须在4~10之间')])

    # email = StringField('email', [validators.Length(min=6, max=35)])

    # password = PasswordField('password', [

    #     validators.DataRequired(),

    #     validators.EqualTo('confirm', message='Passwords must match')

    # ])

    # confirm = PasswordField('Repeat Password')

    # accept_tos = BooleanField('I accept the TOS', [validators.DataRequired()])

2、定义html文件：

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>Title</title>

 </head>

 <body>

 {#<form method="post" action="/register">#}

 {#    <input type="text" name="username">#}

 {#    <input type="password" name="password">#}

 {#    <input type="password" name="confirm">#}

 {#    <input name="email" type="email">#}

 {#    <input type="submit">#}

 {#</form>#}

 {#{% load wtforms %}#}

 <form method="POST" action="/register">

     <div>

         {{ form.username.label }}:

         {{  form.username(class="css_class") }}

     </div>

     {% if form.username.errors %}

         <ol>{% for error in form.username.errors %}<li>{{ error }}</li>{% endfor %}</ol>

     {% endif %}

     <input type="submit">

 {#    <div>#}

 {#        {{ form.password.label }}:#}

 {#        {{ form.password }}#}

 {#    </div>#}

 </form>

 </body>

 </html>

3、调用：

 @APP.route('/register', methods=['GET', 'POST'])

 def register():

     form = RegistrationForm(request.form)

     if request.method == 'POST' and form.validate():

         # user = User(form.username.data, form.email.data,

         #             form.password.data)

         # db_session.add(user)

         # flash('Thanks for registering')

         return 'ok'

         # return redirect(url_for('login'))

     return render_template('register.html', form=form)

4、效果：

wtforms的简单示例-LMLPHP

WTForms

wtforms的简单示例