Code review

includes/breadcrumb.inc

@@ -30,8 +30,7 @@ function islandora_get_breadcrumbs(AbstractObject $object) {
     $backend = variable_get('islandora_breadcrumbs_backends', ISLANDORA_BREADCRUMB_LEGACY_BACKEND);
     $backends = module_invoke_all('islandora_breadcrumbs_backends');
     if ($backend === ISLANDORA_BREADCRUMB_LEGACY_BACKEND || !isset($backends[$backend])) {
-      $breadcrumbs = islandora_get_breadcrumbs_recursive($object->id, $object->repository);
-      array_pop($breadcrumbs);
+      $breadcrumbs = islandora_get_breadcrumbs_legacy($object->id, $object->repository);
     }
     else {
       if (isset($backends[$backend]['file'])) {
@@ -45,6 +44,22 @@ function islandora_get_breadcrumbs(AbstractObject $object) {
   return $breadcrumbs;
 }
 
+/**
+ * Call the legacy SPARQL recursive function and return the correct breadcrumbs.
+ *
+ * @param $pid
+ *   The object id whose parent will be fetched for the next link.
+ * @param \IslandoraFedoraRepository $repository
+ *   The fedora repository.
+ * @return array
+ *   An array of links representing the breadcrumb trail, "root" first.
+ */
+function islandora_get_breadcrumbs_legacy($pid, IslandoraFedoraRepository $repository) {
+  $breadcrumbs = islandora_get_breadcrumbs_recursive($pid, $repository);
+  array_pop($breadcrumbs);
+  return $breadcrumbs;
+}
+
 /**
  * Builds an array of drupal links for use in breadcrumbs.
  *

islandora.api.php

@@ -925,7 +925,7 @@ function hook_islandora_breadcrumbs_backends() {
   return array(
     'awesome_backend' => array(
       'title' => t('Awesome Backend'),
-      'callable' => callback_islandora_breadcrumbs_backends($object),
+      'callable' => 'callback_islandora_breadcrumbs_backends',
     ),
   );
 }
@@ -939,7 +939,7 @@ function hook_islandora_breadcrumbs_backends() {
  *   The object to generate breadcrumbs for.
  *
  * @return array
- *   Array of links from root to $object.
+ *   Array of links from root to the parent of $object.
  */
 function callback_islandora_breadcrumbs_backends(AbstractObject $object) {
   // Do something to get an array of breadcrumb links for $object, root first.