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Contents
# frozen_string_literal: true
require_dependency 'spree/calculator'
module Spree
class Calculator::DefaultTax < Calculator
include Spree::Tax::TaxHelpers
# Default tax calculator still needs to support orders for legacy reasons
# Orders created before Spree 2.1 had tax adjustments applied to the order, as a whole.
# Orders created with Spree 2.2 and after, have them applied to the line items individually.
def compute_order(order)
return 0 unless rate.active?
matched_line_items = order.line_items.select do |line_item|
rate.tax_categories.include?(line_item.tax_category)
end
line_items_total = matched_line_items.sum(&:total_before_tax)
if rate.included_in_price
round_to_two_places(line_items_total - ( line_items_total / (1 + rate.amount) ) )
else
round_to_two_places(line_items_total * rate.amount)
end
end
# When it comes to computing shipments or line items: same same.
def compute_item(item)
return 0 unless rate.active?
if rate.included_in_price
deduced_total_by_rate(item, rate)
else
round_to_two_places(item.total_before_tax * rate.amount)
end
end
alias_method :compute_shipment, :compute_item
alias_method :compute_line_item, :compute_item
alias_method :compute_shipping_rate, :compute_item
private
def rate
calculable
end
def round_to_two_places(amount)
BigDecimal(amount.to_s).round(2, BigDecimal::ROUND_HALF_UP)
end
def deduced_total_by_rate(item, rate)
round_to_two_places(
rate.amount * item.total_before_tax / (1 + sum_of_included_tax_rates(item))
)
end
def sum_of_included_tax_rates(item)
rates_for_item(item).sum(&:amount)
end
end
end
Version data entries
85 entries across 85 versions & 1 rubygems