Class: Spree::TaxRate

Inherits:
Object
  • Object
show all
Includes:
AdjustmentSource, CalculatedAdjustments, Metadata, Webhooks::HasWebhooks
Defined in:
app/models/spree/tax_rate.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.adjust(order, items) ⇒ Object

Deletes all tax adjustments, then applies all applicable rates to relevant items.



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# File 'app/models/spree/tax_rate.rb', line 73

def self.adjust(order, items)
  rates = match(order.tax_zone)
  tax_category_ids = rates.map(&:tax_category_id)

  # using destroy_all to ensure adjustment destroy callback fires.
  Spree::Adjustment.where(adjustable: items).tax.destroy_all

  relevant_items = items.select do |item|
    tax_category_ids.include?(item.tax_category_id)
  end

  relevant_items.each do |item|
    relevant_rates = rates.select do |rate|
      rate.tax_category_id == item.tax_category_id
    end
    store_pre_tax_amount(item, relevant_rates)
    relevant_rates.each do |rate|
      rate.adjust(order, item)
    end
  end

  # updates pre_tax for items without any tax rates
  remaining_items = items - relevant_items
  remaining_items.each do |item|
    store_pre_tax_amount(item, [])
  end
end

.included_tax_amount_for(options) ⇒ Object 



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# File 'app/models/spree/tax_rate.rb', line 101

def self.included_tax_amount_for(options)
  return 0 unless options[:tax_zone] && options[:tax_category]

  potential_rates_for_zone(options[:tax_zone]).
    included_in_price.
    for_tax_category(options[:tax_category]).
    sum(:amount)
end

.match(order_tax_zone) ⇒ Object

Gets the array of TaxRates appropriate for the specified tax zone



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# File 'app/models/spree/tax_rate.rb', line 48

def self.match(order_tax_zone)
  return [] unless order_tax_zone

  potential_rates_for_zone(order_tax_zone)
end

.store_pre_tax_amount(item, rates) ⇒ Object

Pre-tax amounts must be stored so that we can calculate correct rate amounts in the future. For example: github.com/spree/spree/issues/4318#issuecomment-34723428



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# File 'app/models/spree/tax_rate.rb', line 57

def self.store_pre_tax_amount(item, rates)
  pre_tax_amount = case item.class.to_s
                   when 'Spree::LineItem' then item.discounted_amount
                   when 'Spree::Shipment' then item.discounted_cost
                   end

  included_rates = rates.select(&:included_in_price)
  if included_rates.any?
    pre_tax_amount /= (1 + included_rates.sum(&:amount))
  end

  item.update_column(:pre_tax_amount, pre_tax_amount)
end

Instance Method Details

#adjust(order, item) ⇒ Object 



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# File 'app/models/spree/tax_rate.rb', line 110

def adjust(order, item)
  create_adjustment(order, item, included_in_price)
end

#amount_percentage ⇒ Object

Virtual attribute for percentage display in admin forms



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# File 'app/models/spree/tax_rate.rb', line 37

def amount_percentage
  return nil if amount.nil?

  (amount * 100).round(2)
end

#amount_percentage=(value) ⇒ Object 



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# File 'app/models/spree/tax_rate.rb', line 43

def amount_percentage=(value)
  self.amount = value.present? ? (value.to_f / 100) : nil
end

#compute_amount(item) ⇒ Object 



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# File 'app/models/spree/tax_rate.rb', line 114

def compute_amount(item)
  compute(item)
end