autoguid

https://github.com/peterkinnaird/autoguid

Autoguid lets you trivially add human readable uuids to all your models, a whitelisted set of models, or a blacklisted set. Indices are automatically created based on a configuration option. There's also a rake task that will backfill these uuids into resources that have already been created. To get started, include the gem file, run `bundle install`, then run `rake autoguid:install`. From there, edit the config/initializers/autoguid.rb file to specifcy your configuration. Next, migrate your tables with `rake autoguid:migrate:up` and `rake autoguid:migrate:backfill` as required. `rake autoguid:migrate:drop_all` will drop all autoguid generated columns and the data in them. You can always change the config/initializers/autoguid.rb file and rerun `rake autoguid:migrate:up` to add autoguid to new models.