gistfile1.txt

def create(self, request, *args, **kwargs):
        thread = get_object_or_404(CommunicationThread, id=kwargs['thread_id'])

        # Validate note.
        form = forms.CreateCommNoteForm(request.DATA)
        if not form.is_valid():
            return Response(form.errors, status=status.HTTP_400_BAD_REQUEST)

        # Validate attachment.
        attachment_formset = None
        if request.FILES:
            attachment_formset = forms.CommAttachmentFormSet(
                data=request.POST or None, files=request.FILES or None,
                prefix='attachment')
            if not attachment_formset.is_valid():
                return Response(attachment_formset.errors,
                                status=status.HTTP_400_BAD_REQUEST)

        # Create notes.
        thread, note = create_comm_note(
            thread.addon, thread.version, self.request.amo_user,
            form.cleaned_data['body'],
            note_type=form.cleaned_data['note_type'])
        self.attach_as_reply(note)

        # Create attachment.
        if attachment_formset:
            create_attachments(note, attachment_formset)

        return Response(
            NoteSerializer(note, context={'request': request}).data,
            status=status.HTTP_201_CREATED)