From 1651cbd3fb21fef56127feee060d75ac4323eb99 Mon Sep 17 00:00:00 2001
From: Chris Nehren <chris@plainblack.com>
Date: Sat, 5 Jan 2008 00:39:14 +0000
Subject: [PATCH] Add a check in update() for whether isExportable exists,
 preventing problems with users upgrading from previous versions of WebGUI.
 Tested in an upgrade from 7.4.0 -> SVN head (i.e., 7.5.0).

---
 lib/WebGUI/Asset.pm | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lib/WebGUI/Asset.pm b/lib/WebGUI/Asset.pm
index 583e29b16..d88eaf6ad 100644
--- a/lib/WebGUI/Asset.pm
+++ b/lib/WebGUI/Asset.pm
@@ -2159,6 +2159,17 @@ sub update {
             # skip a property if it has the display only flag set
             next if ($definition->{properties}{$property}{displayOnly});
 
+            # if this is the new-to-7.5 isExportable field, check if the
+            # database field for it exists. if not, setting it will break, so
+            # skip it. this facilitates updating from previous versions.
+            if($property eq 'isExportable') {
+                my $db = $self->session->db;
+                my $assetDataDescription = $db->buildHashRef('describe assetData');
+                unless(grep { $_ =~ /^isExportable/ } keys %{$assetDataDescription}) {
+                    next;
+                }
+            }
+
             # use the update value
 			my $value = $properties->{$property};