Added delete validation to prevent removal of populated collections

fedora_repository.module

@@ -496,6 +496,23 @@ function fedora_repository_purge_stream($pid = NULL, $dsId = NULL, $name = NULL)
   return $output;
 }
 
+function fedora_repository_purge_object_form_validate($form, &$form_state) {
+  module_load_include('inc', 'fedora_repository', 'api/fedora_collection');
+  $pid = $form_state['values']['pid'];
+
+  $objectHelper = new ObjectHelper();
+  $contentModels = $objectHelper->get_content_models_list($pid);
+  foreach ($contentModels as $contentModel) {
+    if ($contentModel->pid == 'islandora:collectionCModel') {
+      $member_pids = get_related_items_as_array($pid, 'isMemberOfCollection');
+      if (is_array($member_pids)){
+      form_set_error('new_collection_pid', t("Please purge all members of this collection before deleting the collection itself."));
+      return;
+      }
+    }
+  }
+}
+
 /**
  * fedora repository purge object form submit
  * @param type $form

xsl/sparql_to_html.xsl

@@ -245,3 +245,4 @@
   </xsl:choose>
  </xsl:template>
 </xsl:stylesheet>
+