uuid_ids

UuidIds

A simple gem to make it easy to use UUIDs as the id for Rails models.

Your table creation migration should look something like this:

    create_table :things, :id => false do |t|
      t.binary :id, :primary_key => true, :null => false
      t.timestamps
    end
    add_index :things, :id, :unique => true

binary type is your best bet as it will be put into schema.db correctly.

Then inside of your model just do this:

include UuidIds::ModelHelper

If you need to you can set the id outside of the model. If there is a collision (and you have a unique index) then an exception will be raised and it's up to your app to handle that. If you don't have a unique index and there is a collision you'll have two objects with the same id.

This project rocks and uses MIT-LICENSE.