app/models/beta_invite.rb
require 'activerecord/uuid'
class BetaInvite < ActiveRecord::Base
include ActiveRecord::UUID
# invite_token - starts out null and is filled in when an invite is sent to the user that requested it
# user_id - starts out null and is filled in when an invited user creates an account (so we know they accepted)
validates :email, email: true
end