From 1abbfa5eb7a66ba24da21e88149b5ce833d973ef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Wed, 24 Mar 2021 13:48:25 +0100
Subject: [PATCH] Use empty list as default value for Many2Many companies

issue10163 introduced None as default value but it is not supported.
---
 res.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/res.py b/res.py
index 2a7a1ad683..6c8d574c8c 100644
--- a/res.py
+++ b/res.py
@@ -93,7 +93,7 @@ class User(metaclass=PoolMeta):
     @classmethod
     def default_companies(cls):
         company = Transaction().context.get('company')
-        return [company] if company else None
+        return [company] if company else []
 
     @classmethod
     def default_company(cls):