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14042 mptt cache count (#14048)

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* 14042 fix cache count for mptt child delete

* 14042 add test

* Misc cleanup

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>
This commit is contained in:
Arthur Hanson
2023-10-17 07:31:58 -07:00
committed by GitHub
parent c671ac2f28
commit a24864bc6d
2 changed files with 32 additions and 5 deletions
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6
netbox/utilities/counters.py
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@ -62,7 +62,7 @@ def post_save_receiver(sender, instance, created, **kwargs):
update_counter(parent_model, new_pk, counter_name, 1)
def post_delete_receiver(sender, instance, **kwargs):
def post_delete_receiver(sender, instance, origin, **kwargs):
"""
Update counter fields on related objects when a TrackingModelMixin subclass is deleted.
"""
@ -72,7 +72,9 @@ def post_delete_receiver(sender, instance, **kwargs):
# Decrement the parent's counter by one
if parent_pk is not None:
update_counter(parent_model, parent_pk, counter_name, -1)
# MPTT sends two delete signals for child elements so guard against multiple decrements
if not origin or origin == instance:
update_counter(parent_model, parent_pk, counter_name, -1)
#