core/app/models/spree/promotion/rules/product.rb
# A rule to limit a promotion based on products in the order.
# Can require all or any of the products to be present.
# Valid products either come from assigned product group or are assigned directly to the rule.
module Spree
class Promotion
module Rules
class Product < PromotionRule
has_many :product_promotion_rules, class_name: 'Spree::ProductPromotionRule',
foreign_key: :promotion_rule_id,
dependent: :destroy
has_many :products, through: :product_promotion_rules, class_name: 'Spree::Product'
MATCH_POLICIES = %w(any all none)
preference :match_policy, :string, default: MATCH_POLICIES.first
# scope/association that is used to test eligibility
def eligible_products
products
end
def applicable?(promotable)
promotable.is_a?(Spree::Order)
end
def eligible?(order, _options = {})
return true if eligible_products.empty?
if preferred_match_policy == 'all'
unless eligible_products.all? { |p| order.products.include?(p) }
eligibility_errors.add(:base, eligibility_error_message(:missing_product))
end
elsif preferred_match_policy == 'any'
unless order.products.any? { |p| eligible_products.include?(p) }
eligibility_errors.add(:base, eligibility_error_message(:no_applicable_products))
end
else
unless order.products.none? { |p| eligible_products.include?(p) }
eligibility_errors.add(:base, eligibility_error_message(:has_excluded_product))
end
end
eligibility_errors.empty?
end
def actionable?(line_item)
case preferred_match_policy
when 'any', 'all'
product_ids.include? line_item.variant.product_id
when 'none'
product_ids.exclude? line_item.variant.product_id
else
raise "unexpected match policy: #{preferred_match_policy.inspect}"
end
end
def product_ids_string
product_ids.join(',')
end
def product_ids_string=(s)
# check this
self.product_ids = s
end
end
end
end
end