Redaxscript\Request::getQuery PHP Method

    public function getQuery($key = null)
    {
        return self::get($key, 'get');
    }

 /**
  * render
  *
  * @since 2.6.0
  *
  * @param string $directory
  * @param array $optionArray
  *
  * @return string
  */
 public static function render($directory = null, $optionArray = [])
 {
     $output = null;
     $outputItem = null;
     /* html elements */
     $listElement = new Html\Element();
     $listElement->init('ul', ['class' => self::$_configArray['className']['list']]);
     /* handle option */
     if ($optionArray['hash']) {
         $optionArray['hash'] = '#' . $optionArray['hash'];
     }
     /* handle query */
     $directoryQuery = Request::getQuery('directory');
     $directoryQueryArray = explode('/', $directoryQuery);
     /* parent directory */
     if ($directoryQueryArray[0] === $directory && $directory !== $directoryQuery) {
         $pathFilter = new Filter\Path();
         $rootDirectory = $directory;
         $directory = $pathFilter->sanitize($directoryQuery);
         $parentDirectory = $pathFilter->sanitize(dirname($directory));
         $outputItem .= self::_renderParent($rootDirectory, $parentDirectory, $optionArray);
     }
     /* has directory */
     if (is_dir($directory)) {
         $outputItem .= self::_renderItem($directory, $optionArray);
         /* collect list output */
         if ($outputItem) {
             $output = $listElement->html($outputItem);
         }
     } else {
         self::setNotification('error', Language::get('directory_not_found') . Language::get('colon') . ' ' . $directory . Language::get('point'));
     }
     return $output;
 }