def post(self, request, systemid): solarsystem = get_object_or_404(MapSolarsystem, pk=systemid) items = InvType.objects.filter(id__in=request.POST.getlist('items[]')) ec = EveCentral() itemprices = ec.get_items_system_price(items, solarsystem) text = {} for itemprice in itemprices: text[itemprice.item.pk] = (itemprice.buy_maximum, itemprice.sell_minimum) return self.render_to_response({'json': self.json_encoder.encode(text)})