Nayjest\Grids\Components\ExcelExport::getData PHP Method

    public function getData()
    {
        // Build array
        $exportData = [];
        /** @var $provider DataProvider */
        $provider = $this->grid->getConfig()->getDataProvider();
        $exportData[] = $this->getHeaderRow();
        $this->resetPagination($provider);
        $provider->reset();
        /** @var DataRow $row */
        while ($row = $provider->getRow()) {
            $output = [];
            foreach ($this->grid->getConfig()->getColumns() as $column) {
                if ($this->isColumnExported($column)) {
                    $output[] = $this->escapeString($column->getValue($row));
                }
            }
            $exportData[] = $output;
        }
        return $exportData;
    }