RSpec helper for adding find_or_create to FactoryGirl for Rails

factory_girl_helper.rb

module FactoryGirlHelper

  def find_or_create(*args)
    name = args.shift
    clazz = nil

    # convert from underscores String to camelcase Class
    if name.is_a? Hash
      name = name.first[0]
      clazz = name.first[1].to_s.camelize.constantize
    else
      clazz = name.to_s.camelize.constantize
    end

    target = nil

    # Create Arel lookup to see if model already exists
    lookup = args.shift
    unless lookup.empty?
      target = clazz.where(lookup).first
    end

    # IF the model was not found, create a new one
    if target.nil?
      target = FactoryGirl.create(name,lookup)
    end

    target
  end

end