public function showPicture($id)
 {
     $segments = explode('/', $id);
     $todos = ArticleModel::find($segments);
     if (count($todos) > 0) {
         $path = $todos->pluck('article_filepath');
         $filename = $todos->pluck('article_filename');
         ob_end_clean();
         return response()->download(public_path() . $path[0], $filename[0], ['Content-Type' => 'image/png']);
     } else {
         return ['message' => 'NOT FOUND', 'state' => 'article picture'];
     }
 }