flask表单标签

环境：python2.7+flask+flask_wtf

内容：flask的部分常用表单标签

test.py

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

# flask web_form 表单控件

import flask

from flask_wtf import FlaskForm

from wtforms import *

from wtforms.fields import (StringField, PasswordField, DateField, BooleanField,

                            SelectField, SelectMultipleField, TextAreaField,

                            RadioField, IntegerField, DecimalField, SubmitField)

from wtforms.validators import DataRequired, Length, Email, EqualTo, NumberRange

from flask_wtf.file import FileField, FileRequired, FileAllowed

from flask import Flask, render_template, redirect

app = Flask(__name__)

#from flask_uploads import UploadSet, configure_uploads, IMAGES, patch_request_class

import os

from os import path

d = path.dirname(__file__)

###保护字段

app.config['SECRET_KEY'] = 'a random string'

'''

app.config['UPLOADED_PHOTOS_DEST'] = os.getcwd()

photos = UploadSet('photos', IMAGES)

configure_uploads(app, photos)

patch_request_class(app)

'''

###定义表单

class NewsForm(FlaskForm):

    # Text Field类型，文本输入框，必填，用户名长度为4到25之间

    username = StringField('Username', validators=[Length(min=4, max=25)])

    # Text Field类型，文本输入框，Email格式

    email = StringField('Email Address', validators=[Email()])

    # Text Field类型，密码输入框，必填，必须同confirm字段一致

    password = PasswordField('Password', [

        DataRequired(),

        EqualTo('confirm', message='Passwords must match')

    ])

    # Text Field类型，密码输入框

    confirm = PasswordField('Repeat Password')

    id = HiddenField('id', default='')

    image = FileField(validators=[

            FileRequired('no files'),

            FileAllowed(['jpg', 'png'], 'Images only!')

            ])

    # Text Field类型，文本输入框，必须输入整型数值，范围在16到70之间

    age = IntegerField('Age', validators=[NumberRange(min=16, max=70)])

    # Text Field类型，文本输入框，必须输入数值，显示时保留一位小数

    height = DecimalField('Height (Centimeter)', places=1)

    # Text Field类型，文本输入框，必须输入是"年-月-日"格式的日期

    birthday = DateField('Birthday', format='%Y-%m-%d')

    # Radio Box类型，单选框，choices里的内容会在ul标签里，里面每个项是(值，显示名)对

    gender = RadioField('Gender', choices=[('m', 'Male'), ('f', 'Female')],validators=[DataRequired()])

    # Select类型，下拉单选框，choices里的内容会在Option里，里面每个项是(值，显示名)对

    job = SelectField('Job', choices=[

        ('teacher', 'Teacher'),

        ('doctor', 'Doctor'),

        ('engineer', 'Engineer'),

        ('lawyer', 'Lawyer')

    ])

    # Select类型，多选框，choices里的内容会在Option里，里面每个项是(值，显示名)对

    hobby = SelectMultipleField('Hobby', choices=[

        ('swim', 'Swimming'),

        ('skate', 'Skating'),

        ('hike', 'Hiking')

    ])

    # Text Area类型，段落输入框

    description = TextAreaField('Introduction of yourself')

    # Checkbox类型，加上default='checked'即默认是选上的

    accept_terms = BooleanField('I accept the Terms of Use', default='checked',

                                validators=[DataRequired()])

    # Submit按钮

    submit = SubmitField('Register')

###控制器

@app.route('/test/news_form', methods=['GET','POST'])

def NewsFormViews():

    form  = NewsForm()

    if flask.request.method == "GET":

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

    else:

        #print form.image.data

        if form.validate_on_submit():

            if form.id.data:

                print form.id.data

            if form.image.data:

                filename = form.image.data.filename

                form.image.data.save(path.join(d,filename))

            return redirect('/test/news_form')

        else:

            print form.errors

            ###把错误信息返回到页面

            return render_template('news_form.html',form=form,error=form.errors)

if __name__ == '__main__':

    app.run(host='127.0.0.1',port='', debug=False)