From 0a0bb67277ed6ee1572b71fe6317320ad4663444 Mon Sep 17 00:00:00 2001
From: Maikel Linke <mkllnk@web.de>
Date: Wed, 20 May 2015 14:05:14 +1000
Subject: [PATCH] No SKU for cloned products. Community topic 175

---
 app/models/spree/product_decorator.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/models/spree/product_decorator.rb b/app/models/spree/product_decorator.rb
index 7846a0c1e1..fcaf30c44c 100644
--- a/app/models/spree/product_decorator.rb
+++ b/app/models/spree/product_decorator.rb
@@ -108,6 +108,12 @@ Spree::Product.class_eval do
 
   # -- Methods
 
+  # Called by Spree::Product::duplicate before saving.
+  def duplicate_extra(parent)
+    # Spree sets the SKU to "COPY OF #{parent sku}".
+    self.master.sku = ''
+  end
+
   def properties_including_inherited
     # Product properties override producer properties
     ps = product_properties.all