Module: Spree::MultiCurrency

Defined in:
lib/spree_multi_currency.rb

Instance Method Summary collapse

Instance Method Details

#multi_currency(*args) ⇒ Object

Order.class_eval do extend MultiCurrency multi_currency :item_total, :total,

              :rate_at_date => lambda{ |t| t.created_at },
              :only_read => true
only_read - define just the getter method (and not the setter)
rate_at_date - use the exchange rate at the specified date



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# File 'lib/spree_multi_currency.rb', line 15

def multi_currency(*args)
  options = args.extract_options!

  [args].flatten.compact.each do |number_field|

    # define for example method price
    define_method(number_field.to_sym) do
      num_field = read_attribute(number_field.to_sym)
      if options.has_key?(:rate_at_date) &&
            options[:rate_at_date].is_a?(Proc)
        Spree::Currency.conversion_to_current(
          num_field,
          { date: options[:rate_at_date].call(self) }
        )
      else
        Spree::Currency.conversion_to_current(num_field)
      end
    end

    unless options[:only_read]
      define_method(:"#{number_field}=") do |value|
        write_attribute(number_field.to_sym,
                        Spree::Currency.conversion_from_current(value))
      end
    end

  end
end