From 69ee4ea14fa6b100ae77212deacc873b5475b6cc Mon Sep 17 00:00:00 2001
From: Matthias <matthias.mair@oewf.org>
Date: Tue, 19 Oct 2021 00:32:51 +0200
Subject: [PATCH] and here is the helper

---
 InvenTree/InvenTree/helpers.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/InvenTree/InvenTree/helpers.py b/InvenTree/InvenTree/helpers.py
index 319b88cb09..0d8a84a5d7 100644
--- a/InvenTree/InvenTree/helpers.py
+++ b/InvenTree/InvenTree/helpers.py
@@ -667,3 +667,18 @@ def clean_decimal(number):
         return Decimal(0)
 
     return clean_number.quantize(Decimal(1)) if clean_number == clean_number.to_integral() else clean_number.normalize()
+
+
+def inheritors(cls):
+    """
+    Return all classes that are subclasses from the supplied cls
+    """
+    subcls = set()
+    work = [cls]
+    while work:
+        parent = work.pop()
+        for child in parent.__subclasses__():
+            if child not in subcls:
+                subcls.add(child)
+                work.append(child)
+    return subcls