Return a file download from an AJAX handler

Currently it is not possible to return a download response from an AJAX handler. You have to use a dedicated route or page that returns the response instead.

title = "Download"
url = "/trigger-download"
is_hidden = 0
==
function onStart()
{
    $pathToFile = storage_path('your-file.pdf');
    $fileName = 'download.pdf';
    $headers = [
        'Content-Type' => 'application/pdf'
    ];

    return Response::download($pathToFile, $fileName, $headers);
}
==

You can redirect to this page from any AJAX handler and the browser will start a file download.

function onDownloadHandler()
{
    return Redirect::to('trigger-download');
}