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module Spree
# Base class for all promotion rules
class PromotionRule < Spree::Base
belongs_to :promotion, class_name: 'Spree::Promotion', inverse_of: :promotion_rules
scope :of_type, ->(t) { where(type: t) }
validates :promotion, presence: true
validate :unique_per_promotion, on: :create
def self.for(promotable)
all.select { |rule| rule.applicable?(promotable) }
end
def applicable?(_promotable)
raise NotImplementedError, "applicable? should be implemented in a sub-class of Spree::PromotionRule"
end
def eligible?(_promotable, _options = {})
raise NotImplementedError, "eligible? should be implemented in a sub-class of Spree::PromotionRule"
end
# This states if a promotion can be applied to the specified line item
# It is true by default, but can be overridden by promotion rules to provide conditions
def actionable?(_line_item)
true
end
def eligibility_errors
@eligibility_errors ||= ActiveModel::Errors.new(self)
end
def to_partial_path
"spree/admin/promotions/rules/#{model_name.element}"
end
private
def unique_per_promotion
if Spree::PromotionRule.exists?(promotion_id: promotion_id, type: self.class.name)
errors[:base] << "Promotion already contains this rule type"
end
end
def eligibility_error_message(key, options = {})
Spree.t(key, Hash[scope: [:eligibility_errors, :messages]].merge(options))
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems