/**
  * Populates and saves model attributes
  * @param  $_POST $post            $_POST data
  * @param  CiiSettingsModel $model The model we want to populate
  * @return array                   The saved model attributes or an error message
  */
 private function loadData($post, &$model)
 {
     $model->populate($_POST, true);
     if ($model->save()) {
         return $this->getModelAttributes($model);
     }
     return $this->returnError(400, NULL, $model->getErrors());
 }