Cache access to cache object

src/pretix/plugins/statistics/signals.py

@@ -25,7 +25,7 @@ def control_nav_import(sender, request=None, **kwargs):
 
 
 def clear_cache(sender, *args, **kwargs):
-    cache = sender.get_cache()
+    cache = sender.cache
     cache.delete('statistics_obd_data')
     cache.delete('statistics_obp_data')
     cache.delete('statistics_rev_data')

src/pretix/plugins/statistics/views.py

@@ -32,7 +32,7 @@ class IndexView(EventPermissionRequiredMixin, ChartContainingView, TemplateView)
             except SubEvent.DoesNotExist:
                 pass
 
-        cache = self.request.event.get_cache()
+        cache = self.request.event.cache
         ckey = str(subevent.pk) if subevent else 'all'
 
         # Orders by day