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class TaxRate < ActiveRecord::Base
belongs_to :zone
belongs_to :tax_category
validates :amount, :presence => true, :numericality => true
calculated_adjustments :default => Calculator::SalesTax
scope :by_zone, lambda { |zone| where("zone_id = ?", zone)}
# Searches all possible TaxRates and returns the Zone which represents the most appropriate match (if any.)
# To be considered for a match, the Zone must include the supplied address. If multiple matches are
# found, the Zone with the highest rate will be returned. This method will return +nil+ if no match is found.
def self.match(address)
TaxRate.all.select { |rate| rate.zone.include? address }
end
# For Vat the default rate is the rate that is configured for the default category
# It is needed for every price calculation (as all customer facing prices include vat )
# The function returns the actual amount, which may be 0 in case of wrong setup, but is never nil
def self.default
category = TaxCategory.includes(:tax_rates).where(:is_default => true).first
return 0 unless category
category.effective_amount || 0
end
end
Version data entries
10 entries across 10 versions & 1 rubygems