Формы

class A4ordConfirmForm(CrispyForm):
    code = forms.IntegerField(label=l_(u'Код'), required=True)
    next_stage = None
    form = forms.CharField()

    def __init__(self, *args, **kwargs):
        super(A4ordConfirmForm, self).__init__(*args, **kwargs)
        self.session = get_current_session()

    def get_layout(self, *args, **kwargs):

        layout_list = [
            Field('code', css_class='border border-primary', placeholder=_(u'Введите шестизначный код'), required='required'),
            Field('form', value='A4ordConfirmForm', type='hidden'),
            Div(
                Submit('submit', _(u'Подтвердить почту'), css_class='btn-block'),
            )
        ]

        return Layout(*layout_list)

    def clean_code(self):
        user_id = self.session['user_id']
        password = self.cleaned_data['password']
        user = User.objects.get(id=user_id)
        if user.check_password(password):
            self.session['password'] = password
        else:
            raise ValidationError(_('Пароль не правильный'), code='password invalid')
        return password

    def clean(self):
        data = self.cleaned_data
        data['next_stage'] = self.next_stage
        data['form'] = self
        return data


class A4ordPasswordForm(CrispyForm):
    password = forms.CharField(label=l_(u'Логин'), required=True, widget=forms.PasswordInput)
    is_agree = forms.BooleanField(required=False, initial=False)
    next_stage = A4ordConfirmForm
    form = forms.CharField()

    def __init__(self, *args, **kwargs):
        super(A4ordPasswordForm, self).__init__(*args, **kwargs)
        self.session = get_current_session()

    def get_layout(self, *args, **kwargs):
        self.helper.label_class = 'sr-only'

        layout_list = [
            Field('password', css_class='border border-primary', placeholder=_(u'Пароль'), required='required'),
            'is_agree',
            Field('form', value='A4ordPasswordForm', type='hidden'),
            Div(
                Submit('submit', _(u'Войти'), css_class='btn-block'),
            )
        ]

        return Layout(*layout_list)

    def clean_password(self):
        user_id = self.session['user_id']
        password = self.cleaned_data['password']
        user = User.objects.get(id=user_id)
        if user.check_password(password):
            self.session['password'] = password
        else:
            raise ValidationError(_('Пароль не правильный'), code='password invalid')
        return password

    def clean(self):
        data = self.cleaned_data
        data['next_stage'] = self.next_stage
        data['form'] = self
        return data


class A4ordLoginForm(CrispyForm):
    login = forms.CharField(label=l_(u'Логин'), required=True)
    next_stage = A4ordPasswordForm
    form = forms.CharField()

    def __init__(self, *args, **kwargs):
        super(A4ordLoginForm, self).__init__(*args, **kwargs)
        self.session = get_current_session()

    def get_layout(self, *args, **kwargs):
        self.helper.label_class = 'sr-only'

        layout_list = [
            Field('login', css_class='border border-primary',
                placeholder=_(u'E-mail или телефон'), required='required'
            ),
            Field('form', value='A4ordLoginForm', type='hidden'),
            Div(
                Submit('submit', _(u'Далее'), css_class='btn-block'),
            )
        ]

        return Layout(*layout_list)

    def clean_login(self):
        login = self.cleaned_data['login'].strip()
        try:
            user = User.objects.get(
                Q(username=login) | Q(phone=login)
            )
            self.session['user_id'] = user.id
        except User.DoesNotExist:
            raise ValidationError(_('Пользователь {} не найден'.format(login)), code='not found')
        return login

    def clean(self):
        data = self.cleaned_data
        data['next_stage'] = self.next_stage
        data['form'] = self
        return data