I store files on S3 as the id of the file in my appliction. IE my file
with id 20 will be stored on S3 as 20. When I download the file I want
to look up the file name in the database and then pass it off to the
user. Is there any way I can use redirect_to and pass the S3 url and
then give it the filename, so the user doesn't get 20.