http://github.com/melvinram/ajax-image-upload/
While adding course covers to my BrainBank app, I put together a simple ruby on rails app that uses attachment_fu and responds_to_parent to upload an image. It should be useful if you’re thinking of added image uploading to your app.
CREDITS

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For those of you migrating to Rails 3, I’ve built a gem that makes implementing AJAX style file uploads relatively trivial to implement.
http://rubygems.org/gems/remotipart
Hello! Thanks, for the script, it’s preatty clear for newbies as me.
But, while uploading an image thumbnails are not created.
Any ideas what I might miss here?