def search(self, queryset, value):
    return queryset.filter((((Q(manufacturer__name__icontains=value) | Q(model__icontains=value)) | Q(part_number__icontains=value)) | Q(comments__icontains=value)))
def search(self, queryset, value):
    return queryset.filter((((Q(manufacturer__name__icontains=value) | Q(model__icontains=value)) | Q(part_number__icontains=value)) | Q(comments__icontains=value)))