From 48a907ae4580f77eea74180c826952c8c3d3d5e7 Mon Sep 17 00:00:00 2001
From: Arthur <worldnomad@gmail.com>
Date: Wed, 7 Sep 2022 08:09:28 -0700
Subject: [PATCH] #9231 add comment

---
 netbox/netbox/filtersets.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/netbox/netbox/filtersets.py b/netbox/netbox/filtersets.py
index 2e535266d..b6776e3c1 100644
--- a/netbox/netbox/filtersets.py
+++ b/netbox/netbox/filtersets.py
@@ -81,6 +81,9 @@ class BaseFilterSet(django_filters.FilterSet):
     })
 
     def __init__(self, *args, **kwargs):
+        # bit of a hack for #9231 - extras.lookup.Empty is registered in apps.ready
+        # however FilterSet Factory is setup before this which creates the
+        # initial filters.  This recreates the filters so Empty is picked up correctly.
         self.base_filters = self.__class__.get_filters()
         super().__init__(*args, **kwargs)