Nayjest\Grids\Components\ExcelExport::initialize PHP Метод

    public function initialize(Grid $grid)
    {
        parent::initialize($grid);
        Event::listen(Grid::EVENT_PREPARE, function (Grid $grid) {
            if ($this->grid !== $grid) {
                return;
            }
            if ($grid->getInputProcessor()->getValue(static::INPUT_PARAM, false)) {
                $this->renderExcel();
            }
        });
    }