class ListCreateSKUView(ListCreateAPIView):
    queryset = Sku.objects.all()
    filter_backends = (CustomFilter,)

    def get_serializer_class(self):
        if self.request.method == "POST":
            return CreateSkuSerializer
        else:
            return SkuSerializer

    def perform_create(self, serializer):
        """
        При создании нового sku, всем записям имеющим такойже
        new_barcode присвается созданное sku.
        """
        with atomic():
            # TODO положить код в сериалайзер
            instance = _save_sku(serializer)

            for smd in SkuMonitoringData.objects\
                    .filter(new_barcode=instance.barcode):
                smd.status = SkuMonitoringData.APPROVED
                smd.sku = instance
                process_status(smd)
                smd.log_new_barcode(self.request.user, instance.barcode)
                smd.save()




class CreateSkuSerializer(serializers.ModelSerializer):
    class Meta:
        model = Sku
        fields = ("barcode", "name", "brand", "producer", "real_producer", "segment", "new_producer", "new_brand")
        read_only_fields = ("new_producer", "new_brand",)