From 23439977cc330e740e2ca53dabacd9c45d62f883 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sat, 1 Sep 2018 01:02:04 +0200
Subject: [PATCH] Improve ModelStorage.copy

* Allow callable in copy default
* Support dotted notation in copy default
* Use setdefault in copy
* Copy default when needed
* Do not set default state in copy
* Use callable and dotted notation in copy default

issue5576
issue7648
review72291002
---
 sale.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sale.py b/sale.py
index 0e5f6b0b5a..7ba50c3276 100644
--- a/sale.py
+++ b/sale.py
@@ -73,7 +73,7 @@ class Sale(metaclass=PoolMeta):
             default = {}
         else:
             default = default.copy()
-        default.setdefault('payments')
+        default.setdefault('payments', None)
         return super(Sale, cls).copy(sales, default=default)
 
     @classmethod