From 0bbdf9579dd17501fadb1a43df5432228999fb8a Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Wed, 14 Jul 2010 20:26:52 +0000
Subject: - Patch #826028 by bjaspan: taxonomy form validation creates new
 terms.

---
 modules/rdf/rdf.module | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

(limited to 'modules/rdf')

diff --git a/modules/rdf/rdf.module b/modules/rdf/rdf.module
index 968b1678a..6c341b8d7 100644
--- a/modules/rdf/rdf.module
+++ b/modules/rdf/rdf.module
@@ -727,12 +727,17 @@ function rdf_field_attach_view_alter(&$output, $context) {
     $element = &$output[$field_name];
     if ($element['#field_type'] == 'taxonomy_term_reference' && $element['#formatter'] == 'taxonomy_term_reference_link') {
       foreach ($element['#items'] as $delta => $item) {
-        $term = $item['taxonomy_term'];
-        if (!empty($term->rdf_mapping['rdftype'])) {
-          $element[$delta]['#options']['attributes']['typeof'] = $term->rdf_mapping['rdftype'];
-        }
-        if (!empty($term->rdf_mapping['name']['predicates'])) {
-          $element[$delta]['#options']['attributes']['property'] = $term->rdf_mapping['name']['predicates'];
+        // This function is invoked during entity preview when
+        // taxonomy term reference items might contain free-tagging
+        // terms that do not exist yet and thus have no $item['taxonomy_term'].
+        if (isset($item['taxonomy_term'])) {
+          $term = $item['taxonomy_term'];
+          if (!empty($term->rdf_mapping['rdftype'])) {
+            $element[$delta]['#options']['attributes']['typeof'] = $term->rdf_mapping['rdftype'];
+          }
+          if (!empty($term->rdf_mapping['name']['predicates'])) {
+            $element[$delta]['#options']['attributes']['property'] = $term->rdf_mapping['name']['predicates'];
+          }
         }
       }
     }
-- 
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