Use uniform discretization if no default slots exist

AKModel/views/ak.py

@@ -114,7 +114,13 @@ class AKJSONExportView(AdminViewMixin, FilterByEventSlugMixin, ListView):
             if (values := AKSlot.objects.select_related().filter(ak__pk=ak_id, fixed=True)).exists()
         }
 
-        for block in merge_blocks(self.event.default_time_slots(slots_in_an_hour=SLOTS_IN_AN_HOUR)):
+        if DefaultSlot.objects.filter(event=self).exists():
+            # discretize default slots if they exists
+            blocks = merge_blocks(self.event.default_time_slots(slots_in_an_hour=SLOTS_IN_AN_HOUR))
+        else:
+            blocks = self.event.uniform_time_slots(slos_in_an_hour=SLOTS_IN_AN_HOUR)
+
+        for block in blocks:
             current_block = []
 
             for timeslot in block: