private function hasAtLeastOneFilter()
    {
        $columns = $this->options[self::GRID_PARAM_COLUMNS];

        foreach ($columns as $column) {
            if (isset($column[self::GRID_PARAM_FILTER]) && $column[self::GRID_PARAM_FILTER] == true) {
                return true;
            }
        }

        return false;
    }