Assign filename dynamically in a response

in my web application created with Laravel 8, I need to download an .xml file and the file name must be dynamically created, as per the title. this is because the file name is composed following a specific rule and having to include today’s date.

$filename = 'FirstPart_'.date("Y-m-d").'_000.xml'

so far to test the response and therefore the download I have given a fixed name to the file, as follows, and the download is performed correctly.

• code with fixed filename

        $response = Response::create($xml, 200);
        $response->header('Content-Type', 'text/xml');
        $response->header('Cache-Control', 'public');
        $response->header('Content-Description', 'File Transfer');
        $response->header('Content-Disposition', 'attachment; filename="TestXMLDownload.xml"');
        $response->header('Content-Transfer-Encoding', 'binary');
        return $response;

But when i try to download the file with my custom filename, the download fails.

• code with custom filename

        $response = Response::create($xml, 200);
        $response->header('Content-Type', 'text/xml');
        $response->header('Cache-Control', 'public');
        $response->header('Content-Description', 'File Transfer');
        $response->header('Content-Disposition', 'attachment; filename="".$filename.""');
        $response->header('Content-Transfer-Encoding', 'binary');
        return $response;

I appreciate any suggestion or advice

Answer

Your code have a error in this line, In this case “$filename” append in your header not dynamic file name value.

$response->header('Content-Disposition', 'attachment; filename="".$filename.""');

try this solution:

$filename = "TestXMLDownload.xml";

$response = Response::create($xml, 200);
$response->header('Content-Type', 'text/xml');
$response->header('Cache-Control', 'public');
$response->header('Content-Description', 'File Transfer');

//change that line in your code

$response->header('Content-Disposition', 'attachment; filename=' . '"' . $filename . '"');

$response->header('Content-Transfer-Encoding', 'binary');

return $response;

Append $filename in your filename that pass tp $response->header.