How to handle file download responses in Symfony?

In Symfony, you can handle file download responses using the BinaryFileResponse class. Here's how you can create and return a file download response in a controller action:

  1. Create a new instance of BinaryFileResponse with the path to the file you want to download:
use Symfony\Component\HttpFoundation\BinaryFileResponse; public function downloadAction() { $filePath = '/path/to/your/file.txt'; $response = new BinaryFileResponse($filePath); return $response; }
  1. You can also customize the file download response by setting headers or options. For example, you can set a custom filename for the downloaded file:
$response->setContentDisposition( ResponseHeaderBag::DISPOSITION_ATTACHMENT, 'custom_filename.txt' );
  1. Finally, you can return the BinaryFileResponse object from your controller action, and Symfony will handle sending the file download response to the client.
return $response;

With this approach, Symfony will handle streaming the file content to the client, and the user will be prompted to download the file to their local machine.