gistfile1.py

class TeaserUpdate(TeaserMixin, UpdateView):
    title = "Редактировать тизер"
    template_name = 'advert/teaser_form.html'

    def get(self, request, *args, **kwargs):
        self.object = self.get_object()
        form, image_form = self.get_forms()
        return self.render_to_response(self.get_context_data(form=form, image_form=image_form))

    def post(self, request, *args, **kwargs):
        self.object = self.get_object()
        form, image_form = self.get_forms()
        if form.is_valid():
            teaser, image = form.save(commit=False), None
            if image_form.is_valid():
                image = image_form.save()
                teaser.image = image
            teaser.save()
            if image:
                image.teaser = teaser
                image.save()
            teaser_moder.send(teaser, account=self.account)
            return redirect(get_next_url(self.request, self.get_success_url()))
        return self.render_to_response(self.get_context_data(form=form, image_form=image_form))