hashie_translator.rb

#!/usr/bin/env ruby
require 'json'
require 'active_support/time'
require 'money'
require 'hashie'

class Translator < Hashie::Dash
  include Hashie::Extensions::IgnoreUndeclared
  include Hashie::Extensions::Dash::PropertyTranslation
  include Hashie::Extensions::Coercion
end

class OrderItemTranslator < Translator
  property :amount,   from: 'amount', with: -> (value) { Money.new(value * 100) }
  property :quantity, from: 'quantity'
end

class OrderTranslator < Translator
  property :created_at, from: 'createddate', with: -> (value) { Time.parse(value) }
  property :terms,      from: 'terms',       with: -> (value) { value['name'] }
  property :subtotal,   from: 'subtotal',    with: -> (value) { Money.new(value * 100) }
  property :items,      from: 'item'

  coerce_key :items, Array[OrderItemTranslator]
end