1 files changed, 27 insertions, 2 deletions
diff --git a/modules/gallery/libraries/MY_ORM.php b/modules/gallery/libraries/MY_ORM.php
index 2bd9b4eb..1d3c1ef3 100644
--- a/modules/gallery/libraries/MY_ORM.php
+++ b/modules/gallery/libraries/MY_ORM.php
@@ -18,6 +18,9 @@
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
 class ORM extends ORM_Core {
+  // Track the original value of this ORM instance so that we can look it up in ORM::original()
+  protected $original = null;
+
   public function open_paren() {
     $this->db->open_paren();
     return $this;
@@ -29,8 +32,30 @@ class ORM extends ORM_Core {
   }
 
   public function save() {
-    model_cache::clear($this->object_name, $this->{$this->primary_key}, $this->primary_key);
-    return parent::save();
+    model_cache::clear();
+    $result = parent::save();
+    $this->original = $this->object;
+    return $result;
+  }
+
+  public function __set($column, $value) {
+    if (!isset($this->original)) {
+      $this->original = $this->object;
+    }
+
+    return parent::__set($column, $value);
+  }
+
+  public function __unset($column) {
+    if (!isset($this->original)) {
+      $this->original = $this->object;
+    }
+
+    return parent::__unset($column);
+  }
+
+  public function original($column) {
+    return $this->original[$column];
   }
 }