In my app, I have a requirement that is stumping me.

I have a file stored in S3, and when a user clicks on a link in my app, I log in the DB they've clicked the link, decrease their 'download credit' allowance by one and then I want to prompt the file for download.

I don't simply want to redirect the user to the file because it's stored in S3 and I don't want them to have the link of the source file (so that I can maintain integrity and access)

It looks like send_file() wont work with a remote source file, anyone recommend a gem or suitable code which will do this?

ruby-on-rails
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