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module Spree
module PromotionHandler
# Decides which promotion should be activated given the current order context
#
# By activated it doesn't necessarily mean that the order will have a
# discount for every activated promotion. It means that the discount will be
# created and might eventually become eligible. The intention here is to
# reduce overhead. e.g. a promotion that requires item A to be eligible
# shouldn't be eligible unless item A is added to the order.
#
# It can be used as a wrapper for custom handlers as well. Different
# applications might have completely different requirements to make
# the promotions system accurate and performant. Here they can plug custom
# handler to activate promos as they wish once an item is added to cart
class Cart
attr_reader :line_item, :order
attr_accessor :error, :success
def initialize(order, line_item=nil)
@order, @line_item = order, line_item
end
def activate
promotions.each do |promotion|
if (line_item && promotion.eligible?(line_item)) || promotion.eligible?(order)
promotion.activate(line_item: line_item, order: order)
end
end
end
private
def promotions
promo_table = Promotion.arel_table
join_table = Arel::Table.new(:spree_orders_promotions)
join_condition = promo_table.join(join_table, Arel::Nodes::OuterJoin).on(
promo_table[:id].eq(join_table[:promotion_id])
).join_sources
Promotion.active.includes(:promotion_rules).
joins(join_condition).
where(
promo_table[:code].eq(nil).and(
promo_table[:path].eq(nil)
).or(join_table[:order_id].eq(order.id))
).distinct
end
end
end
end
Version data entries
35 entries across 35 versions & 1 rubygems