Luke Plant committed c8a2131

Efficiency tweak

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Files changed (1)


     # Booked or cancelled places are included.
     payable = payable.filter(bookings__state=BOOKING_BOOKED) | payable.filter(bookings__state=BOOKING_CANCELLED)
     # annotation works over the bookings filtered above
-    outstanding = payable.annotate(total_amount_due=Sum('bookings__amount_due')).exclude(total_amount_due=F('total_received'))
+    outstanding = payable.only('id','total_received').annotate(total_amount_due=Sum('bookings__amount_due')).exclude(total_amount_due=F('total_received'))
     total_amount_due_dict = dict((, o.total_amount_due) for o in outstanding)
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