protected function fileUpdate()
    {
        foreach ($this->getAsserts() as $field => $asserts) {
            if ($this->$field instanceof UploadedFile) {
                $tempField = '_'.$field;
                $tempFile = $this->getFilePath($tempField, true);
                is_file($tempFile) && unlink($tempFile);
                $this->bean->removeProperty($tempField);

                $this->$field = $this->moveFile($this->$field);
            }
        }
    }