Django Class Based Views and Inline Formset Example

forms.py

from django.forms import ModelForm
from django.forms.models import inlineformset_factory

from models import Sponsor, Sponsorship


class SponsorForm(ModelForm):

    class Meta:
        model = Sponsor


class SponsorshipForm(ModelForm):

    class Meta:
        model = Sponsorship


SponsorShipsFormSet = inlineformset_factory(Sponsor, Sponsorship,
                                            form=SponsorshipForm, extra=2)

views.py

from django.db import transaction
from django.views.generic import CreateView

from forms import SponsorForm, SponsorShipsFormSet


class CreateSponsor(SponsorMixin, CreateView):
    form_class = SponsorForm
    template_name = 'sponsor_form.html'

    def get_context_data(self, **kwargs):
        data = super(CreateSponsor, self).get_context_data(**kwargs)
        if self.request.POST:
            data['sponsorships'] = SponsorShipsFormSet(self.request.POST)
        else:
            data['sponsorships'] = SponsorShipsFormSet()
        return data

    def form_valid(self, form):
        context = self.get_context_data()
        sponsorships = context['sponsorships']
        with transaction.commit_on_success():
            form.instance.created_by = self.request.user
            form.instance.updated_by = self.request.user
            self.object = form.save()
        if sponsorships.is_valid():
            sponsorships.instance = self.object
            sponsorships.save()

        return super(CreateSponsor, self).form_valid(form)

    def get_success_url(self):
        return reverse('sponsors')