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Italo Maia

Building Web Applications with Flask

156 printed pages

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Quotes

    Ulyanov Kirillhas quotedlast month
    coding:utf-8
    from wtforms import Form, ValidationError
    from wtforms import StringField, PasswordField
    from wtforms.validators import Length, InputRequired
    from werkzeug.datastructures import MultiDict
    import re
    def is_proper_username(form, field):
    if not re.match(r"^\w+$", field.data):
    msg = '%s should have any of these characters only: a-z0-9_' % field.name
    raise ValidationError(msg)
    class LoginForm(Form):
    username = StringField(
    u'Username:', [InputRequired(), is_proper_username, Length(min=3, max=40)])
    password = PasswordField(
    u'Password:', [InputRequired(), Length(min=5, max=12)])
    @staticmethod
    def validate_password(form, field):
    data = field.data
    if not re.findall('.*[a-z].*', data):
    msg = '%s should have at least one lowercase character' % field.name
    raise ValidationError(msg)
    # has at least one uppercase character
    if not re.findall('.*[A-Z].*', data):
    msg = '%s should have at least one uppercase character' % field.name
    raise ValidationError(msg)
    # has at least one number
    if not re.findall('.*[0-9].*', data):
    msg = '%s should have at least one number' % field.name
    raise ValidationError(msg)
    # has at least one special character
    if not re.findall('.*[^ a-zA-Z0-9].*', data):
    msg = '%s should have at least one special character' % field.name
    raise ValidationError(msg)
    # testing our form
    form = LoginForm(MultiDict([('username', 'italomaia'), ('password', 'lL2m@msbb')]))
    print form.validate()
    print form.errors

On the bookshelves

    Ulyanov Kirill
    About Python
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