factory_girl singleton helper

factory_girl.rb

require 'factory_girl/step_definitions'

def FactorySingleton(*args)
  FactorySingleton.find_or_self *args
end

module FactorySingleton
  def find_or_self object, attribute = nil
    # FIXME: instead of this probably could check validation reflection for unique attributes
    attribute ||= case object
    when User
       :login
    end
    raise 'Unknown class. Please supply attribute' unless attribute
    object.class.where(attribute => object.send(attribute)).first || object
  end
  extend self
end