From 2326482bb6f4a2e6c0cb51132a645deae28ac69a Mon Sep 17 00:00:00 2001
From: Lance Edgar <ledgar@sacfoodcoop.com>
Date: Tue, 18 Nov 2014 19:36:55 -0600
Subject: [PATCH] Make `GPCFieldRenderer` display check digit separate from
 main barcode data.

It is presumed that this is a good idea in general; I guess we'll see.
---
 tailbone/forms/renderers/products.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tailbone/forms/renderers/products.py b/tailbone/forms/renderers/products.py
index dd9deb1b..64e40bec 100644
--- a/tailbone/forms/renderers/products.py
+++ b/tailbone/forms/renderers/products.py
@@ -20,7 +20,6 @@
 #  along with Rattail.  If not, see <http://www.gnu.org/licenses/>.
 #
 ################################################################################
-
 """
 Product Field Renderers
 """
@@ -64,6 +63,13 @@ class GPCFieldRenderer(TextFieldRenderer):
         # Hm, should maybe consider hard-coding this...?
         return len(str(GPC(0)))
 
+    def render_readonly(self, **kwargs):
+        gpc = self.raw_value
+        if gpc is None:
+            return ''
+        gpc = unicode(gpc)
+        return '{0}-{1}'.format(gpc[:-1], gpc[-1])
+
 
 class BrandFieldRenderer(AutocompleteFieldRenderer):
     """