public function view($id = null)
 {
     if (empty($id)) {
         redirect('charts');
     } else {
         if (Ranked_file::count(array('conditions' => array('id = ?', $id))) == 0) {
             redirect('charts');
         } else {
             error_reporting(E_ALL ^ E_DEPRECATED ^ E_NOTICE ^ E_WARNING);
             $file = Ranked_file::find($id);
             $pack = Pack::find($file->pack_id);
             $this->data['user_scores'] = User_score::get_scores_for_chart($id);
             $this->data['pack'] = $pack;
             $this->data['subtitle'] = $file->title;
             $this->_process_everything($file->raw_file, $file->rate);
         }
     }
 }