Allows coupons to be added to Spree orders in a non-complete state, regardless of the date the order was created on

spree promotion fix

module Extensions
  module Spree
    module Promotion
      extend ActiveSupport::Concern

      included do
        alias_method_chain :order_activatable?, :no_date_limitation
      end

      def order_activatable_with_no_date_limitation?(order)
        order &&
        code.present? ? true : created_at.to_i < order.created_at.to_i &&
        !::Spree::Promotion::UNACTIVATABLE_ORDER_STATES.include?(order.state)
      end

    end
  end
end
::Spree::Promotion.send(:include, Extensions::Spree::Promotion)