Playing with tw2 form validation and the MatchValidator.

form_validation.py

import tw2.core as twc
import tw2.forms as twf


class SettingsForm(twf.Form):

    submit = twf.SubmitButton(value='Update')
    action = '/update_settings'

    class child(twf.TableLayout):

        hover_help = True

        new_login_email = twf.TextField(
            help_text='Enter a new login email.',
            validator=twc.EmailValidator)
        confirm_new_email = twf.TextField(
            help_text='Confirm new login email address.',
            validator=twc.MatchValidator('new_login_email')
        )
        new_password = twf.PasswordField(
            help_text='Enter new password.')
        confirm_new_password = twf.PasswordField(
            help_text='Confirm new password.',
            validator=twc.MatchValidator('new_password')
        )
        current_password = twf.PasswordField(
            help_text='Enter current password.',
            validator=twc.Required)


if __name__ == '__main__':
    # This succeeeds, since new_login_email == confirm_new_email.  They are
    # both blank.
    SettingsForm.validate({
        'new_password': 'secret',
        'confirm_new_password': 'secret',
        'current_password': 'oldpass',
    })

    # This fails appropriately.
    SettingsForm.validate({
        'new_login_email': '[email protected]',
        'new_password': 'secret',
        'confirm_new_password': 'secret',
        'current_password': 'oldpass',
    })