unique properties

gistfile1

#!/usr/bin/env ruby
#
# A one file test to show ...
require 'rubygems'

gem('dm-core', '~> 0.9.8')
require 'dm-core'
require 'dm-validations'

# setup the logger
DataMapper::Logger.new(STDOUT, :debug)

# connect to the DB
DataMapper.setup(:default, 'sqlite3::memory:')

class TestModel
  include DataMapper::Resource

  # properties
  property :id, Serial
  property :login, String, :unique_index => :domain
  property :domain, String, :unique_index => :domain

  validates_is_unique :login, :scope => :domain

end

DataMapper.auto_migrate!