Paperclip + S3 on Heroku
Add a .gems file with the “right_aws” gem
Insert your S3 credentials in config/s3.yml
Provide S3 related options when calling has_attached_file
A few things to notice
Pay special attention when copying code from tutorials. Some text converting filters like Textile and SmartyPants will convert “100x100” to “100×100” (notice how the “x” character was converted to ASCII 215, which will be passed to ImageMagick and cause a failure).
Paperclip by default swallows STDERR when calling ImageMagick, making it hard to debug problems with its binaries. To avoid this behavior you might want to disable it with:
Paperclip.options = false