/**
  * 
  * @param Object $f3
  * @param RedBean $bean
  * @return string 連結
  */
 static function get_link($f3, $bean)
 {
     //$link = "/get/1000/檔案名稱.txt";
     $id = $bean->id;
     //$id = 4;
     $hash_id = Base56::encode($id);
     $filename = $bean->filename;
     $filename = urlencode($filename);
     $link = "/get/" . $hash_id . "/" . $filename;
     $link = PFH_URL_helper::get_base_url($f3, $link);
     return $link;
 }