using class

gistfile1.txt

AMOUNT_CALC_ATTRIBUTES = [:_, :quantity, :price_per, :subtotal, :service_fee, :total, :currency, :trans_fee]

class AmountCalculated
  attr_accessor *AMOUNT_CALC_ATTRIBUTES

  def initialize(opts)
    opts.each{|k,v| self.send("#{k}=", v)}
  end

end



Example call:

am = AmountCalculated.new({ :quantity => 0, :price_per => 0, :subtotal => 0, :service_fee => 0, :trans_fee => 0, :total => 0, :currency => 'USD' })