class OfferCreateView(TemplateView):

    model = Offer
    template_name = 'offers/offer_create.html'
    form_class = OfferCreateForm

    def get(self, request, *args, **kwargs):
        form = OfferCreateForm(request=request)
        itemformset = formset_factory(ItemCreateForm, extra=3, can_delete=True)
        item_form = itemformset()
        return self.render_to_response({
            "form": form,
            "item_form": item_form
        })

class OfferCreateForm(forms.ModelForm):

    class Meta:
        model = Offer
        exclude = []

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

        request = kwargs.pop("request", None)

        super(OfferCreateForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_tag = False
        self.helper.help_text_inline = True
        self.helper.add_layout(Layout(
            Fieldset('Kunde',
                Row(
                    Div(
                        Field('customer'),
                        css_class='col-sm-6'
                    ),
                    Div(
                        Field('receiver'),
                        css_class='col-sm-6'
                    ),
                )),
            Fieldset('Kundeninformation',
                Row(
                    Div(
                        Field('introduction'),
                        css_class='col-sm-12'
                    ),
                ),
            ),
            Fieldset('Zusätzliche Informationen',
                Row(
                    Div(
                        Field('footer'),
                        css_class='col-sm-12',
                    ),
                ),
            ),
        ))


class ItemCreateForm(forms.ModelForm):

    class Meta:
        model = Item
        exclude = ['offer']

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

        request = kwargs.pop("request", None)

        super(ItemCreateForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_tag = False
        self.helper.help_text_inline = True
        self.helper.add_layout(Layout(
            Fieldset('Angebotsposten',
                Row(
                    Div(
                        Field('number'),
                        css_class='col-sm-3'
                    ),
                    Div(
                        Field('description'),
                        css_class='col-sm-3'
                    ),
                    Div(
                        Field('costs'),
                        css_class='col-sm-3'
                    ),
                ),
        )))

{% crispy form %}
{% crispy item_form %}