core/app/models/spree/promotion/rules/taxon.rb
module Spree
class Promotion
module Rules
class Taxon < PromotionRule
has_many :promotion_rule_taxons, class_name: 'Spree::PromotionRuleTaxon',
foreign_key: 'promotion_rule_id',
dependent: :destroy
has_many :taxons, through: :promotion_rule_taxons, class_name: 'Spree::Taxon'
MATCH_POLICIES = %w(any all)
preference :match_policy, default: MATCH_POLICIES.first
def applicable?(promotable)
promotable.is_a?(Spree::Order)
end
def eligible?(order, _options = {})
if preferred_match_policy == 'all'
unless (taxons.to_a - taxons_in_order_including_parents(order)).empty?
eligibility_errors.add(:base, eligibility_error_message(:missing_taxon))
end
else
order_taxons = taxons_in_order_including_parents(order)
unless taxons.any? { |taxon| order_taxons.include? taxon }
eligibility_errors.add(:base, eligibility_error_message(:no_matching_taxons))
end
end
eligibility_errors.empty?
end
def actionable?(line_item)
store = line_item.order.store
store.products.
joins(:classifications).
where(Spree::Classification.table_name => { taxon_id: taxon_ids, product_id: line_item.product_id }).
exists?
end
def taxon_ids_string
taxons.pluck(:id).join(',')
end
def taxon_ids_string=(s)
ids = s.to_s.split(',').map(&:strip)
self.taxons = Spree::Taxon.for_stores(stores).find(ids)
end
private
# All taxons in an order
def order_taxons(order)
taxon_ids = Spree::Classification.where(product_id: order.product_ids).pluck(:taxon_id).uniq
order.store.taxons.where(id: taxon_ids)
end
# ids of taxons rules and taxons rules children
def taxons_including_children_ids
taxons.inject([]) { |ids, taxon| ids += taxon.self_and_descendants.ids }
end
# taxons order vs taxons rules and taxons rules children
def order_taxons_in_taxons_and_children(order)
order_taxons(order).where(id: taxons_including_children_ids)
end
def taxons_in_order_including_parents(order)
order_taxons_in_taxons_and_children(order).inject([]) { |taxons, taxon| taxons << taxon.self_and_ancestors }.flatten.uniq
end
end
end
end
end