queryset = Price.objects.select_related('art').order_by(*fields_sorts).filter(**fields_filters)

 queryset = Price.objects.filter(**fields_filters).order_by(*fields_sorts).values(
    'art_id',\
    'art__nom',\
    'art__har',\
    'art__art',\
    'art__artn',\
    'art__arth',\
    'pr'
    )