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module KktShoppe
class TaxRate < ActiveRecord::Base
self.table_name = 'kkt_shoppe_tax_rates'
include KktShoppe::AssociatedCountries
# The order address types which may be used when choosing how to apply the tax rate
ADDRESS_TYPES = ['billing', 'delivery']
# Validations
validates :name, :presence => true
validates :address_type, :inclusion => {:in => ADDRESS_TYPES}
validates :rate, :numericality => true
# All products which are assigned to this tax rate
has_many :products, :dependent => :restrict_with_exception, :class_name => 'KktShoppe::Product'
# All delivery service prices which are assigned to this tax rate
has_many :delivery_service_prices, :dependent => :restrict_with_exception, :class_name => 'KktShoppe::DeliveryServicePrice'
# All tax rates ordered by their ID
scope :ordered, -> { order(:id)}
# Set the address type if appropriate
before_validation { self.address_type = ADDRESS_TYPES.first if self.address_type.blank? }
# A description of the tax rate including its name & percentage
#
# @return [String]
def description
"#{name} (#{rate}%)"
end
# The rate for a given order based on the rules on the tax rate
#
# @return [BigDecimal]
def rate_for(order)
return rate if countries.empty?
return rate if address_type == 'billing' && (order.billing_country.nil? || country?(order.billing_country))
return rate if address_type == 'delivery' && (order.delivery_country.nil? || country?(order.delivery_country))
BigDecimal(0)
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems