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class Product < ActiveRecord::Base
has_many :product_option_types, :dependent => :destroy
has_many :option_types, :through => :product_option_types
has_many :variations, :dependent => :destroy
belongs_to :category
has_and_belongs_to_many :tax_treatments
has_many :images, :as => :viewable, :dependent => :destroy
has_one :sku, :as => :stockable, :dependent => :destroy
validates_presence_of :name
validates_presence_of :description
validates_presence_of :price
alias :selected_options :product_option_types
# if product has a new category then we may need to delete tax_treatments associated with the
# previous category
def before_update
return if self.category.nil?
ar_tax_treatments.clear unless self.category.tax_treatments.empty?
end
def apply_tax_treatment?(id)
return true if self.tax_treatments.any? {|tt| tt.id == id}
return self.category.tax_treatments.any? {|tt| tt.id == id} unless self.category.nil?
end
# Serious Ruby hacking going on here. We alias the original method for the association as added by
# ActiveRecord and then override it so we can return the categories treatments if they are present.
alias :ar_tax_treatments :tax_treatments
def tax_treatments
tt = ar_tax_treatments
return tt unless tt.empty?
return tt if self.category.nil?
if self.category.tax_treatments.empty?
# return empty array (does not need to be frozen since category has none)
return tt
else
# return a frozen copy of the cateogires variations
return Array.new(self.category.tax_treatments).freeze
end
end
end
Version data entries
3 entries across 3 versions & 1 rubygems