PartKeepr\ExportBundle\Controller\ExportController::exportAction PHP Method

    public function exportAction(Request $request)
    {
        $contentTypes = $request->getAcceptableContentTypes();
        $exporter = false;
        $file = tempnam(sys_get_temp_dir(), 'partkeepr_export');
        unlink($file);
        foreach ($contentTypes as $contentType) {
            switch ($contentType) {
                case 'text/comma-separated-values':
                    $exporter = new CsvWriter($file, ',', '"', '\\', false);
                    break;
                case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':
                    $exporter = new XmlExcelWriter($file, false);
                    break;
            }
        }
        if ($exporter === false) {
            throw new \Exception('No or invalid format specified');
        }
        $content = json_decode($request->getContent(), true);
        $exporter->open();
        foreach ($content as $item) {
            $exporter->write($item);
        }
        $exporter->close();
        $exportData = file_get_contents($file);
        return new Response($exportData, 200);
    }