Module: MultiCurrency

Defined in:
lib/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 - выполнять перевод из одной валюты в другую только для вывода
rate_at_date - использовать курс валюты на дату



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# File 'lib/multi_currency.rb', line 10

def multi_currency(*args)
  options = args.extract_options!
  [args].flatten.compact.each do |number_field|

    define_method(number_field.to_sym) do
      if options.has_key?(:rate_at_date) && options[:rate_at_date].is_a?(Proc)
        Currency.conversion_to_current(read_attribute(number_field.to_sym),
                                       { :date => options[:rate_at_date].call(self) })
      else
        Currency.conversion_to_current(read_attribute(number_field.to_sym))
      end
    end

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

  end

end