From c6f3d83f673965e0ed2f1dffc46358b8d2c08c4f Mon Sep 17 00:00:00 2001
From: Oscar Alvarez <oscar.alvarez.montero@gmail.com>
Date: Wed, 29 Apr 2015 19:22:59 -0500
Subject: [PATCH] Field sale_device must be readonly when sale is not draft

---
 sale.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sale.py b/sale.py
index f31be36..5451f55 100644
--- a/sale.py
+++ b/sale.py
@@ -25,7 +25,9 @@ class Sale:
             readonly=True), 'get_residual_amount')
     sale_device = fields.Many2One('sale.device', 'Sale Device',
             domain=[('shop', '=', Eval('shop'))],
-            depends=['shop']
+            depends=['shop'], states={
+                'readonly': Eval('state') != 'draft',
+                }
     )
 
     @classmethod