Use fill()+save() instead of save()

CHANGELOG.md

@@ -1,6 +1,7 @@
 * **Build 27x** (2015-06-xx)
   - List columns now support specifying a `default` option used when the value would otherwise be null.
   - Implement a custom autoloader for plugins that use composer. Now only one instance of composer is used, all packages are now added to a global pool to prevent double loading and the load order is respected.
+  - The method signature of `Model::save()` has been fixed to match Eloquent.
 
 * **Build 272** (2015-06-27)
   - Protected images and their thumbnails are now supported in the back-end.

modules/backend/behaviors/RelationController.php

@@ -915,7 +915,8 @@ class RelationController extends ControllerBehavior
 
         if ($this->viewMode == 'multi') {
             $model = $this->relationModel->find($this->manageId);
-            $model->save($saveData, $this->manageWidget->getSessionKey());
+            $model->fill($saveData);
+            $model->save(null, $this->manageWidget->getSessionKey());
         }
         elseif ($this->viewMode == 'single') {
             $this->viewWidget->setFormValues($saveData);

modules/system/behaviors/SettingsModel.php

@@ -125,7 +125,8 @@ class SettingsModel extends ModelBehavior
     {
         $data = is_array($key) ? $key : [$key => $value];
         $obj = self::instance();
-        return $obj->save($data);
+        $obj->fill($data);
+        return $obj->save();
     }
 
     /**

modules/system/classes/ComposerManager.php

@@ -1,7 +1,5 @@
 <?php namespace System\Classes;
 
-use Composer\Autoload\ClassLoader as ComposerLoader;
-
 /**
  * Composer manager
  *