public_filename does not return relative path

[drbawb]

If the application is running in a sub-directory, public_filename does not appear to return the relative path.

[technoweenie]

I'm not using the master anymore (I use the rewrite branch), so I can't confirm: I think you just need to set your own base_path.

http://github.com/technoweenie/attachment_fu/blob/master/lib/technoweenie/attachment_fu/backends/file_system_backend.rb#L27-29

If your full attachment path is /foo/public/images/file.gif, then your base_path should be /foo/public, making the public path /images/file.gif.