Custom location and URL for attachment

[colmexdev]

Hi there!

I'd like to add a prefix to attachment_url so that I can expose an endpoint where files can be served. Is that possible?

What I want to achieve is, after uploading file to specified storage (e.g. /route/to/nfs/folder) and having tweaked generate_location method (so it saves in something like app_folder/filename.ext), that attachment_url method returns something like this: /custom/prefix/app_folder/filename.ext. Note that I'd like this prefix only on URL, not on stored location.

Thank you very much in advance!