Order modification: Remove warning when invoice is not yet generated (Z#23226423) (#5966)

src/pretix/presale/templates/pretixpresale/event/order_modify.html

@@ -13,7 +13,7 @@
         {% csrf_token %}
         <div class="panel-group" id="questions_accordion">
             {% if invoice_address_asked or event.settings.invoice_name_required %}
-                {% if invoice_address_asked and not request.GET.generate_invoice == "true" and not event.settings.invoice_reissue_after_modify %}
+                {% if invoice_address_asked and not request.GET.generate_invoice == "true" and not invoice_generation_selfservice %}
                     <div class="alert alert-info">
                         {% blocktrans trimmed %}
                             Modifying your invoice address will not automatically generate a new invoice.

src/pretix/presale/views/order.py

@@ -909,6 +909,21 @@ class OrderModify(EventViewMixin, OrderDetailMixin, OrderQuestionsViewMixin, Tem
     def get(self, request, *args, **kwargs):
         return super().get(request, *args, **kwargs)
 
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(
+            **kwargs,
+        )
+
+        ctx['invoice_generation_selfservice'] = (
+            self.request.event.settings.invoice_reissue_after_modify or
+            (
+                can_generate_invoice(self.request.event, self.order, ignore_payments=True) and
+                not self.order.invoices.exists()
+            )
+        )
+
+        return ctx
+
     def dispatch(self, request, *args, **kwargs):
         self.request = request
         self.kwargs = kwargs