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：

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Title</title>
 6 </head>
 7 <body>
 8 {#<form method="post" action="/register">#}
 9 {#    <input type="text" name="username">#}
10 {#    <input type="password" name="password">#}
11 {#    <input type="password" name="confirm">#}
12 {#    <input name="email" type="email">#}
13 {#    <input type="submit">#}
14 
15 {#</form>#}
16 
17 {#{% load wtforms %}#}
18 <form method="POST" action="/register">
19     <div>
20         {{ form.username.label }}:
21         {{  form.username(class="css_class") }}
22     </div>
23     {% if form.username.errors %}
24         <ol>{% for error in form.username.errors %}<li>{{ error }}</li>{% endfor %}</ol>
25     {% endif %}
26     <input type="submit">
27 
28 
29 
30 
31 {#    <div>#}
32 {#        {{ form.password.label }}:#}
33 {#        {{ form.password }}#}
34 {#    </div>#}
35 </form>
36 
37 </body>
38 </html>
View Code

3、调用：

 1 @APP.route('/register', methods=['GET', 'POST'])
 2 def register():
 3     form = RegistrationForm(request.form)
 4     if request.method == 'POST' and form.validate():
 5         # user = User(form.username.data, form.email.data,
 6         #             form.password.data)
 7         # db_session.add(user)
 8         # flash('Thanks for registering')
 9         return 'ok'
10         # return redirect(url_for('login'))
11     return render_template('register.html', form=form)

 4、效果：

 

posted @ 2017-03-13 15:38  脚本小娃子  阅读(427)  评论(0)  编辑  收藏  举报