-
-
Save rubysolo/313771 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Discount | |
# name | |
# code | |
# effective_at | |
# ends_at | |
# type # (DollarOff, PercentOff, FreeShipping..) | |
# promotion? | |
# customer_exclusive? | |
# amount | |
# minimum_total_requirement | |
has_many :assignments, :class_name => "DiscountAssignment" | |
has_many :users, :through => :assignments | |
has_many :sales_orders, :through => :assignments | |
has_many :filters | |
named_scope :promotions, :conditions => { :promotion => true } | |
named_scope :customer_credits, :conditions => { :promotion => false } | |
named_scope :global, :conditions => { :customer_exclusive => false } | |
def filter(order) | |
order.details.select do |d| | |
filters.all? {|f| f.is_applicable? d } | |
end | |
end | |
def applicable?(order) | |
active? && | |
order.total >= minimum_total_requirement && | |
# check dates, yadda, yadda | |
filter(order).any? # do ANY details pass ALL the filters? | |
end | |
end | |
DiscountAssignment | |
promo_id | |
user_id | |
sales_order_id | |
class DiscountFilter < ActiveRecord::Base | |
# criterion | |
# interface definition | |
def is_applicable?(order_detail) | |
raise "Implement this in your subclass" | |
end | |
end | |
class ColorDiscountFilter < ActiveRecord::Base | |
def is_applicable?(order_detail) | |
order_detail.product.color == self.criterion | |
end | |
end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment