hashie.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

netsuite_order = JSON.parse(File.read('sales_order.json').gsub("\n",""))

order_translator = OrderTranslator.new(netsuite_order)

puts order_translator.to_hash

homegrown.rb

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

class OrderItemTranslator
  def initialize(netsuite_order_item)
    @netsuite_order_item = netsuite_order_item
  end

  def to_hash
    {
      amount:   amount,
      quantity: @netsuite_order_item['quantity']
    }
  end

  def money
    Money.new(@netsuite_order_item['amount'])
  end
end


class OrderTranslator
  def initialize(netsuite_order)
    @netsuite_order = netsuite_order
  end

  def to_hash
    {
      created_at: created_at,
      terms:      terms,
      subtotal:   subtotal,
      items:      items.map(&:to_hash)
    }
  end

  def created_at
    Time.parse @netsuite_order['createddate']
  end

  def terms
    @netsuite_order['terms']['name']
  end

  def subtotal
    Money.new(@netsuite_order['subtotal'] * 100)
  end

  def items
    @netsuite_order['item'].map {|item| OrderItemTranslator.new(item)}
  end
end


netsuite_order = JSON.parse(File.read('order.json').gsub("\n",""))

order_translator = OrderTranslator.new(netsuite_order)
puts order_translator.to_hash

order.json

{
   "custbody_order_state":{
      "name":"Sent
        to Production (Full Approval)"
   },
   "terms":{
      "name":"NET 30"
   },
   "createddate":"5/5/2015
        6:20 pm",
   "subtotal":1650,
   "currencyname":"United States Dollar",
   "item":[
      {
         "amount":1650,
         "quantity":1500
      }
   ]
}