From adf6172a652c1c61c5c7b9699478390cc0cdc050 Mon Sep 17 00:00:00 2001
From: Arnaud Pineux <arnaud.pineux@gmail.com>
Date: Mon, 6 May 2019 16:20:16 +0200
Subject: [PATCH] [FIX] onchange_helper: invert condition to avoid [None]

Co-Authored-By: lmignon <laurent.mignon@acsone.eu>
---
 onchange_helper/models/models.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/onchange_helper/models/models.py b/onchange_helper/models/models.py
index d532fbde3..5505153ec 100644
--- a/onchange_helper/models/models.py
+++ b/onchange_helper/models/models.py
@@ -132,7 +132,10 @@ class Base(models.AbstractModel):
         if self:
             self.ensure_one()
 
-        if not isinstance(onchange_fields, list):
+        if not onchange_fields:
+            onchange_fields = values.keys()
+
+        elif not isinstance(onchange_fields, list):
             onchange_fields = [onchange_fields]
 
         if not onchange_fields: