From 688b8d15f953dbd66bc05a57746231e068726dc1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Fri, 17 Jul 2015 15:12:42 +0200
Subject: [PATCH] Add missing test on field in set_column_widget

Field can be None when adding a column for a button
Introduced in changeset 37b76806c878

issue4882
---
 tryton/gui/window/view_form/view/list.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tryton/gui/window/view_form/view/list.py b/tryton/gui/window/view_form/view/list.py
index 9105e5b735..b02d308015 100644
--- a/tryton/gui/window/view_form/view/list.py
+++ b/tryton/gui/window/view_form/view/list.py
@@ -456,7 +456,7 @@ class ViewTree(View):
         tooltips = Tooltips()
         hbox = gtk.HBox(False, 2)
         label = gtk.Label(attributes['string'])
-        if field.attrs.get('required'):
+        if field and field.attrs.get('required'):
             attrlist = pango.AttrList()
             attrlist.insert(pango.AttrWeight(pango.WEIGHT_BOLD, 0, -1))
             label.set_attributes(attrlist)