gistfile1.txt

  ##
  # This is spree 2-1-stable specific logic to re-apply a promotion code. It will not work for 2-2-stable because promotions are being revamped.
  # https://github.com/spree/spree/issues/4398
  #
  def reapply_coupon_codes
    codes = []

    # Go through the adjustments to find promotions that are not eligible
    adjustments.each do |a|
      if a.eligible == false && a.originator.respond_to?(:promotion) && a.originator.promotion.code
        codes << a.originator.promotion.code
      end
    end

    # Re-apply each code...depend on Spree to use the best one.
    # https://github.com/spree/spree/blob/2-1-stable/api/app/controllers/spree/api/orders_controller.rb#L85
    codes.each do |c|
      coupon_code = c
      save
      Spree::Promo::CouponApplicator.new(self).apply    
    end
  end