How can I create_or_update in seeds.rb for translations?

I now have the following in my seeds.rb

os = OrderStatus.find(1)
os.translations.create(:status => "In aanmaak", :locale => "nl")
os.translations.create(:status => "Creating", :locale => "en")

However this creates doubles. So I tried to do a create_or_update instead of create but that doesn't seem to be supported. I am using globalize3

Based on your comment you could do the following:

os = OrderStatus.find(1)
os.translations.where(locale: "nl").first_or_create.update_attributes(status: "In aanmaak")
os.translations.where(locale: "en").first_or_create.update_attributes(status: "Creating")

I'm not sure if there's a nicer way of writing this, but you could create your own method:

class Translation < ActiveRecord::Base
  def first_or_update(locale, status)
    where(locale: locale).first_or_create.update_attributes(status: status)
  end
end

os.translations.first_or_update("en", "Creating")