Fixes #225

CHANGELOG.md

@@ -1,4 +1,4 @@
-* **Build 95** (2014-05-29)
+* **Build 96** (2014-05-29)
   - Plugin CLI commands are now case insensitive.
   - Fixes a bug where belongsTo form field relations were not being set.
   - Form field `richeditor` (WYSIWYG) no longer adds full page HTML tags.

modules/backend/formwidgets/Relation.php

@@ -121,6 +121,12 @@ class Relation extends FormWidgetBase
      */
     public function getSaveData($value)
     {
-        return strlen($value) ? $value : null;
+        if (is_string($value) && !strlen($value))
+            return null;
+
+        if (is_array($value) && !count($value))
+            return null;
+
+        return $value;
     }
 }