flask wtforms 的效验

flask版

.py

from flask import Flask, render_template, request, session, current_app, g, redirect

from wtforms import Form

from wtforms.fields import simple

from wtforms.fields import html5

from wtforms.fields import core

from wtforms import widgets

from wtforms import validators

app = Flask(__name__)

class RegisterForm(Form):

    name = simple.StringField(

        label='用户名',

        validators=[

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

         ],

        widget=widgets.TextInput(),

        render_kw={'class': 'form-control'},

        default='jocket'

    )

    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='确认密码',

        validators=[

            validators.DataRequired(message='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

    )

    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]

    )

class LoginForm(Form):

    name = simple.StringField(

        validators=[

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

            # validators.Length(min=6, max=18, message="用户名长度必须大于%(min)d且小于%(max)d")

        ],

        render_kw={"placeholder": '请输入用户'}

    )

    pwd = simple.PasswordField(

        validators=[

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

            # validators.Length(min=6, max=18, message='密码长度必须大于%(min)d'),

            # validators.Regexp(regex="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$15*？&])[A-Za-z\d$@$!%*?&]{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")

        ],

        render_kw={"placeholder": "请输入密码"}

    )

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

def register():

    if request.method == 'GET':

        form = RegisterForm()

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

    form = RegisterForm(formdata=request.form)

    if form.validate():

        print(form.data)

        return redirect('/login')

@app.route('/login', methods=['GET', "POST"])

def login():

    if request.method == "GET":

        form = LoginForm()

        print(form.name, form.pwd)  # <input/>

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

    form = LoginForm(formdata=request.form)

    if form.validate():

        print("验证成功")

        print(form.data)

        return 'data'

    else:

        print(form.errors)

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

if __name__ == '__main__':

    app.run(debug=True)

.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

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

    <title>title</title>

</head>

<body>

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

    <p>

        {{form.name}}

    </p>

    {{form.name.errors.0}}

    <p>

        {{form.pwd}}

    </p>

    {{form.pwd.errors.0}}

    <p>

        <input type="submit" value="提交">

    </p>

</form>

</body>

</html>

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

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

</head>

<body>

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

    {% for i in form %}

    <p>

       {{i.label}}: {{i}}  {{i.errors[0]}}

    </p>

    {% endfor %}

    <input type="submit" value="提交">

</form>

</body>

</html>

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flask wtforms 的效验

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