/**
  * 
  * Intial validation of incoming CMS requests before we do anything useful.
  * 
  * @return SS_HTTPResponse
  * @todo Refactor into single static. There are v.close dupes of this in the other controllers.
  */
 public function initValidate()
 {
     $folderId = SecuredFilesystem::get_numeric_identifier($this, 'ID');
     if ($folderId) {
         $folder = DataObject::get_by_id("Folder", $folderId);
         if ($folder && $folder->exists()) {
             if ($folder->Secured) {
                 $message = _t('SecuredFilesystem.messages.ERROR_ACCESS_ONLY_IN_SECURED_FILES');
                 return SecuredFilesystem::show_access_message($this, $message);
             }
         } else {
             $message = _t('SecuredFilesystem.messages.ERROR_FOLDER_NOT_EXISTS');
             return SecuredFilesystem::show_access_message($this, $message);
         }
     }
 }
 /**
  * 
  * {@inheritdoc}
  * 
  * @param SS_HTTPRequest $request
  * @return HTMLText
  */
 public function addfolder($request)
 {
     $parentId = SecuredFilesystem::get_numeric_identifier($this, 'ParentID');
     $folder = DataObject::get_by_id("Folder", $parentId);
     if ($folder && $folder->exists()) {
         if (!$folder->Secured) {
             $message = _t('SecuredFilesystem.messages.ERROR_ACCESS_ONLY_IN_FILES');
             return SecuredFilesystem::show_access_message($this, $message);
         }
         return parent::addfolder($request);
     } else {
         $message = _t('SecuredFilesystem.messages.ERROR_FOLDER_NOT_EXISTS');
         return SecuredFilesystem::show_access_message($this, $message);
     }
 }