item_adjustments_decorator.rb

  1 module Spree
      ItemAdjustments.class_eval do
  2
  3     # Picks one (and only one) promotion to be eligible for this order
  4     # This promotion provides the most discount, and if two promotions
  5     # have the same amount, then it will pick the latest one.
  6     def choose_best_promotion_adjustment
  7       raise "#{adjustment}"
  8       if best_promotion_adjustment
  9         other_promotions = self.adjustments.promotion.where.not(id: best_promotion_adjustment.id)
 10         #other_promotions.update_all(:eligible => false)
 11       end
 12    end
 13
 14     def best_promotion_adjustment
 15       @best_promotion_adjustment ||= adjustments.promotion.eligible.reorder("amount ASC, created_at DESC, id DESC")
 16     end
      end
 17 end