App\Http\Controllers\Laralum\Laralum::document PHP Method

    public static function document($type, $data)
    {
        if ($type == 'id') {
            return Document::findOrFail($data);
        }
        return Document::where($type, $data)->first();
    }

 public static function checkDocumentOwner($type, $data)
 {
     if (Auth::user()->id == Laralum::document($type, $data)->author->id) {
         return true;
     } else {
         return false;
     }
 }