1 files changed, 14 insertions, 7 deletions
diff --git a/modules/tag/models/tag.php b/modules/tag/models/tag.php
index bd665667..13e253ba 100644
--- a/modules/tag/models/tag.php
+++ b/modules/tag/models/tag.php
@@ -69,15 +69,22 @@ class Tag_Model_Core extends ORM {
    * to this tag.
    */
   public function save() {
-    $related_item_ids = array();
-    foreach (db::build()
-             ->select("item_id")
-             ->from("items_tags")
-             ->where("tag_id", "=", $this->id)
-             ->execute() as $row) {
-      $related_item_ids[$row->item_id] = 1;
+    // Check to see if another tag exists with the same name
+    $duplicate_tag = ORM::factory("tag")
+      ->where("name", "=", $this->name)
+      ->where("id", "!=", $this->id)
+      ->find();
+    if ($duplicate_tag->loaded()) {
+      // If so, tag its items with this tag so as to merge it.
+      foreach ($duplicate_tag->items() as $item) {
+        $this->add($item);
+      }
+
+      // ... and remove the duplicate tag
+      $duplicate_tag->delete();
     }
 
+    // Figure out what items have changed in this tag for our item_related_update event below
     if (isset($this->object_relations["items"])) {
       $added = array_diff($this->changed_relations["items"], $this->object_relations["items"]);
       $removed = array_diff($this->object_relations["items"], $this->changed_relations["items"]);