app_models_inventory_item.rb

class InventoryItem < ActiveRecord::Base

  def self.update_kit_ids
    search = NetSuite::Records::InventoryItem.search({
      criteria: {
        basic: [
          {
            field: 'type',
            operator: 'anyOf',
            type: 'SearchEnumMultiSelectField',
            value: [
              # https://system.netsuite.com/help/helpcenter/en_US/srbrowser/Browser2014_1/schema/enum/itemtype.html
              '_kit'
            ]
          }
        ]
      }
    }); kits = []; search.results_in_batches { |batch| kits += batch }; kits.length
    
    kits.each do |kit|
      # DO THINGS HERE
    end
  end
  
end

config_initializers_netsuite.rb

# Some of this is for convenience, some helped with issues
module NetSuite
	module Records

		class KitItem
			actions :search
			
			record_refs :member_list
			
			def items
				inventory_items = self.member_list.attributes[:item_member]
				inventory_items = [inventory_items] unless inventory_items.kind_of?(Array)
				inventory_items.map do |hash|
					{
						quantity: hash[:quantity].to_i,
						name: hash[:member_descr],
						tattly_id: hash[:item][:name],
						net_suite_id: hash[:item][:@internal_id].to_i,
						member_unit: hash[:member_unit]
					}
				end
			end
		end

		class AssemblyItem
			record_refs :member_list
			
			def items
				inventory_items = self.member_list.attributes[:item_member]
				inventory_items = [inventory_items] unless inventory_items.kind_of?(Array)
				inventory_items.map do |hash|
					{
						quantity: hash[:quantity].to_i,
						name: hash[:member_descr],
						tattly_id: hash[:item][:name],
						net_suite_id: hash[:item][:@internal_id].to_i,
						member_unit: hash[:member_unit]
					}
				end
			end
		end
		
		class Invoice
			actions :search
		end
		
		class InventoryItem
			actions :search
			
			def search_class_name
				"Item"
			end
		end
		
		class Partner
			include Support::Fields
			include Support::RecordRefs
			include Support::Records
			include Support::Actions
			include Namespaces::ListRel

			attr_accessor :search_joins

			actions :get, :search, :get_list, :update
			
			fields :first_name, :last_name, :entity_id, :partner_code, :email, :phone, :company_name,
				:address, :address1, :address2, :address_label, :city, :country, :email, :zip_code
			
			field :addressbook_list,	CustomerAddressbookList
			
			field :custom_field_list, CustomFieldList
			
			# record_refs :address_book_list
			
			attr_reader	 :internal_id
			attr_accessor :external_id
			attr_accessor :search_joins

			def initialize(attributes = {})
				@internal_id = attributes.delete(:internal_id) || attributes.delete(:@internal_id)
				@external_id = attributes.delete(:external_id) || attributes.delete(:@external_id)
				initialize_from_attributes_hash(attributes)
			end
			
			def to_record
				rec = super
				if rec["#{record_namespace}:customFieldList"]
					rec["#{record_namespace}:customFieldList!"] = rec.delete("#{record_namespace}:customFieldList")
				end
				rec
			end

		end
		
		# Convenience methods so that what I'm accessing isn't so messy and easier to spec
		class Transaction
			
			attr_accessor :invoice
			
			def department_name
				department.name rescue nil
			end
			
			def items
				@invoice ||= NetSuite::Records::Invoice.get({
					internal_id: internal_id,
					columns: {
						'tranSales:basic' => [
							'platformCommon:internalId/' => {}
						],
						'tranSales:itemList' => [
							'platformCommon:internalId/' => {},
							'platformCommon:units/' => {}
						]
					},
				})
				
				@invoice.item_list.items
			end
			
		end
		
		class InvoiceItem
			def tattly_id
				item.name
			end
			def member_unit_guess
				units.name rescue "SET"
			end
			
			def quantity_with_typecast
				quantity_without_typecast.to_i
			end
			alias_method_chain :quantity, :typecast
			
			def internal_id
				item.internal_id.to_i
			end
		end
		

	end
	
	module Actions

		class Search
			def search_friendly_class_name
				class_name = @klass.to_s.split("::").last
				
				if class_name == "InventoryItem"
					"Item"
				else
					class_name
				end
			end
		end

	end
end