Nayjest / Grids

    protected function renderHeader($file)

    {

        $output = [];

        foreach ($this->grid->getConfig()->getColumns() as $column) {

            if (!$column->isHidden()) {

                $output[] = $this->escapeString($column->getLabel());

            }

        }

        fputcsv($file, $output, static::CSV_DELIMITER);

    }

}

        /** @var DataRow $row */

        while ($row = $provider->getRow()) {

            $output = [];

            foreach ($this->getConfig()->getColumns() as $column) {

                if ($this->isColumnExported($column)) {

                    $output[] = $this->escapeString($column->getValue($row));

                }

            }

            $exportData[] = $output;

        }

        return $exportData;

    protected function getHeaderRow()

    {

        $output = [];

        foreach ($this->getConfig()->getColumns() as $column) {

            if ($this->isColumnExported($column)) {

                $output[] = $this->escapeString($column->getLabel());

            }

        }

        return $output;

    }