Order change manager: Recalculate tax of zero-valued positions (Z#23223874)

src/pretix/__init__.py

@@ -19,4 +19,4 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-__version__ = "2026.2.2"
+__version__ = "2026.3.0.dev0"

src/pretix/api/views/checkin.py

@@ -1121,7 +1121,7 @@ class CheckinViewSet(viewsets.ReadOnlyModelViewSet):
     permission = 'can_view_orders'
 
     def get_queryset(self):
-        qs = Checkin.all.filter(list__event=self.request.event).select_related(
+        qs = Checkin.all.filter().select_related(
             "position",
             "device",
         )

src/pretix/base/services/orders.py

@@ -1799,8 +1799,6 @@ class OrderChangeManager:
             tax_rule = tax_rules.get(pos.pk, pos.tax_rule)
             if not tax_rule:
                 continue
-            if not pos.price:
-                continue
 
             try:
                 new_rate = tax_rule.tax_rate_for(ia)
@@ -1817,7 +1815,9 @@ class OrderChangeManager:
                                            override_tax_rate=new_rate, override_tax_code=new_code)
                 self._totaldiff_guesstimate += new_tax.gross - pos.price
                 self._operations.append(self.PriceOperation(pos, new_tax, new_tax.gross - pos.price))
-                self._invoice_dirty = True
+                if pos.price:
+                    # We do not consider the invoice dirty if only 0€-valued taxes are changed
+                    self._invoice_dirty = True
 
     def cancel_fee(self, fee: OrderFee):
         self._totaldiff_guesstimate -= fee.value

src/pretix/plugins/ticketoutputpdf/api.py

@@ -229,11 +229,6 @@ class TicketRendererViewSet(viewsets.ViewSet):
     @action(detail=False, methods=['GET'], url_name='download', url_path='download/(?P<asyncid>[^/]+)/(?P<cfid>[^/]+)')
     def download(self, *args, **kwargs):
         cf = get_object_or_404(CachedFile, id=kwargs['cfid'])
-        if not cf.allowed_for_session(self.request, "ticketoutputpdf-api"):
-            return Response(
-                {'status': 'failed', 'message': 'Unknown file ID or export failed'},
-                status=status.HTTP_410_GONE
-            )
         if cf.file:
             resp = ChunkBasedFileResponse(cf.file.file, content_type=cf.type)
             resp['Content-Disposition'] = 'attachment; filename="{}"'.format(cf.filename).encode("ascii", "ignore")
@@ -270,7 +265,6 @@ class TicketRendererViewSet(viewsets.ViewSet):
         serializer.is_valid(raise_exception=True)
 
         cf = CachedFile(web_download=False)
-        cf.bind_to_session(self.request, "ticketoutputpdf-api")
         cf.date = now()
         cf.expires = now() + timedelta(hours=24)
         cf.save()