reduce team shift view query count

shiftregister/team/views.py

@@ -93,7 +93,9 @@ def add_helper_shift(self):
 
 @login_required
 def shift_detail(request, pk):
-    shift = get_object_or_404(Shift, pk=pk)
+    shift = get_object_or_404(
+        Shift.with_reg_count().prefetch_related("shiftregistration_set__helper"), pk=pk
+    )
     form = HelperShift()
     if request.method == "POST":
         form = HelperShift(request.POST)