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Versions: 10
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Stored size: 1.46 KB
Contents
module Tienda
class Product < ActiveRecord::Base
# Validations
validate { errors.add :base, :can_belong_to_root if self.parent && self.parent.parent }
# Variants of the product
has_many :variants, -> { order(:default => :desc, :name => :asc) }, :class_name => 'Tienda::Product', :foreign_key => 'parent_id', :dependent => :destroy
# The parent product (only applies to variants)
belongs_to :parent, :class_name => 'Tienda::Product', :foreign_key => 'parent_id'
# All products which are not variants
scope :root, -> { where(:parent_id => nil) }
# If a variant is created, the base product should be updated so that it doesn't have stock control enabled
after_save do
if self.parent
self.parent.price = 0
self.parent.cost_price = 0
self.parent.tax_rate = nil
self.parent.weight = 0
self.parent.stock_control = false
self.parent.save if self.parent.changed?
end
end
# Does this product have any variants?
#
# @return [Boolean]
def has_variants?
!variants.empty?
end
# Returns the default variant for the product or nil if none exists.
#
# @return [Tienda::Product]
def default_variant
return nil if self.parent
@default_variant ||= self.variants.select { |v| v.default? }.first
end
# Is this product a variant of another?
#
# @return [Boolean]
def variant?
!self.parent_id.blank?
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems