/**
  *
  * @return array 
  */
 public function get_file()
 {
     $result = Request::file('file', array());
     if (empty($result)) {
         return array();
     }
     $error = isset($result['error']) ? (bool) $result['error'] : false;
     if ($error) {
         return array();
     }
     return $result;
 }