From b04a40308151985f29ee88872c896ce82a6a8787 Mon Sep 17 00:00:00 2001
From: Oliver <oliver.henry.walters@gmail.com>
Date: Tue, 20 Jul 2021 22:15:49 +1000
Subject: [PATCH] subclass TreeManager

---
 InvenTree/part/models.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/InvenTree/part/models.py b/InvenTree/part/models.py
index fa19f8b075..49be12e283 100644
--- a/InvenTree/part/models.py
+++ b/InvenTree/part/models.py
@@ -27,6 +27,7 @@ from markdownx.models import MarkdownxField
 from django_cleanup import cleanup
 
 from mptt.models import TreeForeignKey, MPTTModel
+from mptt.managers import TreeManager
 
 from stdimage.models import StdImageField
 
@@ -284,7 +285,7 @@ def match_part_names(match, threshold=80, reverse=True, compare_length=False):
     return matches
 
 
-class PartManager(models.Manager):
+class PartManager(TreeManager):
     """
     Defines a custom object manager for the Part model.