Flask的Form
#!/usr/bin/env python
# -*- coding:utf-8 -*-
from flask import Flask,request,render_template
from wtforms import Form,StringField
from wtforms.validators import Length,EqualTo
app = Flask(__name__)
class RegistForm(Form):
username = StringField(validators=[Length(min=3,max=10,message='用户名必须在3到10位之间')])
password = StringField(validators=[Length(min=6,max=10,message='密码必须6到10位之间')])
password_repeat = StringField(validators=[Length(min=6,max=10),
EqualTo("password",message='密码不一致')])
@app.route('/')
def hello_world():
return 'Hello World!'
@app.route('/regist/',methods=['GET','POST'])
def regist():
if request.method == 'GET':
return render_template('regist.html')
else:
form = RegistForm(request.form)
if form.validate():
return 'success'
else:
print(form.errors)
return 'fail'
if __name__ == '__main__':
app.run()
第二弹
from flask import Flask, render_template, request, redirect
from wtforms import Form
from wtforms.fields import core
from wtforms.fields import html5
from wtforms.fields import simple
from wtforms import validators
from wtforms import widgets
from functools import partial
app = Flask(__name__, template_folder='templates')
app.debug = True
class RegisterForm(Form):
def validate_pwd_confirm(self, field):
"""
自定义pwd_confirm字段规则，例：与pwd字段是否一致
:param field:
:return:
"""
# 最开始初始化时，self.data中已经有所有的值
print(field.data)
if field.data !="sb":
#raise validators.ValidationError("sb") # 继续后续验证
raise validators.StopValidation("SB") # 不再继续后续验证
# if field.data != self.data['pwd']:
# raise validators.ValidationError("密码不一致") # 继续后续验证
#raise validators.StopValidation("密码不一致") # 不再继续后续验证
name = simple.StringField(
label='用户名',
validators=[
validators.DataRequired()
],
widget=widgets.TextInput(),
render_kw={'class': 'form-control'},
default='tank'
)
pwd = simple.PasswordField(
label='密码',
validators=[
validators.DataRequired(message='密码不能为空.')
],
widget=widgets.PasswordInput(),
render_kw={'class': 'form-control'}
)
pwd_confirm = simple.PasswordField(
label='重复密码',
validators=[
validate_pwd_confirm,
validators.DataRequired(message='重复密码不能为空.'),
#validators.EqualTo('pwd', message="两次密码输入不一致")
],
widget=widgets.PasswordInput(),
render_kw={'class': 'form-control'}
)
email = html5.EmailField(
label='邮箱',
validators=[
validators.DataRequired(message='邮箱不能为空.'),
validators.Email(message='邮箱格式错误')
],
widget=widgets.TextInput(input_type='email'),
render_kw={'class': 'form-control'}
)
gender = core.RadioField(
label='性别',
choices=(
(1, '男'),
(2, '女'),
),
coerce=int # “1” “2”
)
city = core.SelectField(
label='城市',
choices=(
('bj', '北京'),
('sh', '上海'),
)
)
hobby = core.SelectMultipleField(
label='爱好',
choices=(
(1, '篮球'),
(2, '足球'),
),
coerce=int
)
favor = core.SelectMultipleField(
label='喜好',
choices=(
(1, '篮球'),
(2, '足球'),
),
widget=widgets.ListWidget(prefix_label=False),
option_widget=widgets.CheckboxInput(),
coerce=int,
default=[1, 2]
)
def __init__(self, *args, **kwargs):
super(RegisterForm, self).__init__(*args, **kwargs)
self.favor.choices = ((1, '篮球'), (2, '足球'), (3, '羽毛球'))
self.favor.data=[1,]
@app.route('/register', methods=['GET', 'POST'])
def register():
if request.method == 'GET':
form = RegisterForm(data={'gender': 2,'hobby':[1,]}) # initial
return render_template('register.html', form=form)
else:
form = RegisterForm(formdata=request.form)
if form.validate():
print('用户提交数据通过格式验证，提交的值为：', form.data)
else:
print(form.errors)
return render_template('register.html', form=form)
if __name__ == '__main__':
app.run()
ps:
这边的default参数 在里面源码对应会在Form对象中 获取每个字段类, 然后把对应的default 转化为data , 所以比如 多选的选项默认设置时候 设置关键字参数为 data
Flask的表单认证
from flask import Flask, render_template, request, redirect
from wtforms import Form
from wtforms.fields import simple
from wtforms import validators
from wtforms import widgets
app = Flask(__name__)
app.debug = True
class LoginForm(Form):
# 字段（内部包含正则表达式）
name = simple.StringField(
label='用户名',
validators=[
validators.DataRequired(message='用户名不能为空.'),
validators.Length(min=2, max=6, message='用户名长度必须大于%(min)d且小于%(max)d')
],
widget=widgets.TextInput(), # 页面上显示的插件
render_kw={'class': 'form-control'}
)
# 字段（内部包含正则表达式）
pwd = simple.PasswordField(
label='密码',
validators=[
validators.DataRequired(message='密码不能为空.'),
validators.Length(min=8, message='密码长度必须大于%(min)d'),
# validators.Regexp(regex="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&])[A-Za-z\d$@$!%*?&]{8,}",
# message='密码至少8个字符，至少1个大写字母，1个小写字母，1个数字和1个特殊字符')
],
widget=widgets.PasswordInput(),
render_kw={'class': 'form-control'}
)
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'GET':
form = LoginForm()
return render_template('login.html', form=form)
else:
form = LoginForm(formdata=request.form)
if form.validate():
print('用户提交数据通过格式验证，提交的值为：', form.data)
else:
print(form.errors)
return render_template('login.html', form=form)
if __name__ == '__main__':
app.run()