From 0ddda4a668b4fe0ad4789961fafe8340af656ea6 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Mon, 4 Sep 2017 21:09:08 +0200
Subject: [PATCH] Fix #617 -- Purge ticket cache after ticket settings/layout
 changes

---
 src/pretix/control/views/event.py           |  8 ++++++--
 src/pretix/plugins/ticketoutputpdf/views.py | 12 +++++++++++-
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/pretix/control/views/event.py b/src/pretix/control/views/event.py
index fea8a1ea3..584ebacff 100644
--- a/src/pretix/control/views/event.py
+++ b/src/pretix/control/views/event.py
@@ -25,8 +25,8 @@ from i18nfield.strings import LazyI18nString
 from pytz import timezone
 
 from pretix.base.models import (
-    CachedTicket, Event, Item, ItemVariation, LogEntry, Order, OrderPosition,
-    RequiredAction, TaxRule, Voucher,
+    CachedCombinedTicket, CachedTicket, Event, Item, ItemVariation, LogEntry,
+    Order, OrderPosition, RequiredAction, TaxRule, Voucher,
 )
 from pretix.base.models.event import EventMetaValue
 from pretix.base.services import tickets
@@ -634,6 +634,9 @@ class TicketSettings(EventPermissionRequiredMixin, FormView):
                     CachedTicket.objects.filter(
                         order_position__order__event=self.request.event, provider=provider.identifier
                     ).delete()
+                    CachedCombinedTicket.objects.filter(
+                        order__event=self.request.event, provider=provider.identifier
+                    ).delete()
             else:
                 success = False
         form = self.get_form(self.get_form_class())
@@ -645,6 +648,7 @@ class TicketSettings(EventPermissionRequiredMixin, FormView):
                         k: form.cleaned_data.get(k) for k in form.changed_data
                     }
                 )
+
             messages.success(self.request, _('Your changes have been saved.'))
             return redirect(self.get_success_url())
         else:
diff --git a/src/pretix/plugins/ticketoutputpdf/views.py b/src/pretix/plugins/ticketoutputpdf/views.py
index ae7d4d87c..922e4fc5b 100644
--- a/src/pretix/plugins/ticketoutputpdf/views.py
+++ b/src/pretix/plugins/ticketoutputpdf/views.py
@@ -16,7 +16,9 @@ from django.utils.translation import ugettext as _
 from django.views.generic import TemplateView
 
 from pretix.base.i18n import language
-from pretix.base.models import CachedFile, InvoiceAddress
+from pretix.base.models import (
+    CachedCombinedTicket, CachedFile, CachedTicket, InvoiceAddress,
+)
 from pretix.control.permissions import EventPermissionRequiredMixin
 from pretix.control.views import ChartContainingView
 from pretix.helpers.database import rolledback_transaction
@@ -128,6 +130,14 @@ class EditorView(EventPermissionRequiredMixin, ChartContainingView, TemplateView
                 request.event.settings.set('ticketoutput_pdf_background', 'file://' + newname)
 
             request.event.settings.set('ticketoutput_pdf_layout', request.POST.get("data"))
+
+            CachedTicket.objects.filter(
+                order_position__order__event=self.request.event, provider='pdf'
+            ).delete()
+            CachedCombinedTicket.objects.filter(
+                order__event=self.request.event, provider='pdf'
+            ).delete()
+
             return JsonResponse({'status': 'ok'})
         return HttpResponseBadRequest()