module EchoUploads

Uses the official Amazon Web Services SDK gem:

gem install aws-sdk

Incompatible with 1.x.x versions of the aws-sdk gem.

If you want to validate the presence of a file, be sure to use:

validates :attr, uploads: {presence: true}

instead of:

validates :attr, presence: true

The former takes into account files that have already been persisted, whereas the latter does not and will cause false validation errors.