examples.py

class ExampleFormMultipleView(MultipleFormsView):
    template_name = 'preferences/change_group_multiple.html'
    forms = {
        'profile': ProfileForm,
        'avatar': AvatarForm,
        'contacts': ContactsForm,
    }

    def forms_valid(self, forms):
        for key, form in forms.items():
            # Логика обработки
        return redirect(self.get_success_url())

views.py

from django.views.generic.edit import FormMixin, ProcessFormView

class MultipleFormsMixin(FormMixin):
    form_classes = {}

    def get_form_classes(self):
        return self.form_classes

    def get_forms(self, form_classes):
        return {key: klass(**self.get_form_kwargs()) for key, klass in form_classes.items()}

    def forms_valid(self, forms):
        return super(MultipleFormsMixin, self).form_valid(forms)

    def forms_invalid(self, forms):
        return self.render_to_response(self.get_context_data(forms=forms))


class ProcessMultipleFormsView(ProcessFormView):
    def get(self, request, *args, **kwargs):
        form_classes = self.get_form_classes()
        forms = self.get_forms(form_classes)
        return self.render_to_response(self.get_context_data(forms=forms))

    def post(self, request, *args, **kwargs):
        form_classes = self.get_form_classes()
        forms = self.get_forms(form_classes)
        if all([form.is_valid() for form in forms.values()]):
            return self.forms_valid(forms)
        else:
            return self.forms_invalid(forms)


class BaseMultipleFormsView(MultipleFormsMixin, ProcessMultipleFormsView):
    pass


class MultipleFormsView(TemplateResponseMixin, BaseMultipleFormsView):
    pass