I have a JSON blob, received from a webservice and I'd like to build some Ruby Objects.
I don't want to :
I want to :
| # Here is an example using APISmith https://github.com/filtersquad/api_smith | |
| # It could be simpler, especially with RateInfoList and RoomGroup | |
| # that are useless intermediate data structures | |
| # I'm not sure about the custom transformers for Date, Boolean and BigDecimal | |
| # it seems a bit weird to do this but it works. | |
| require 'rubygems' | |
| require 'pathname' | |
| require 'bigdecimal' | |
| require 'multi_json' | |
| require 'money' | |
| require 'pry' | |
| require 'api_smith/smash.rb' | |
| module Mapping | |
| class DateParser | |
| def self.call(v) | |
| Date.strptime(v, '%d/%M/%Y') | |
| end | |
| end | |
| class BigDecimalParser | |
| def self.call(v) | |
| BigDecimal.new(v) | |
| end | |
| end | |
| class BooleanParser | |
| def self.call(v) | |
| true_values = %w[ 1 on t true y yes ].freeze | |
| false_values = %w[ 0 off f false n no ].freeze | |
| boolean_map = ::Hash[ true_values.product([ true ]) + false_values.product([ false ]) ].freeze | |
| case v | |
| when String | |
| boolean_map.fetch(v.downcase) | |
| when Numeric | |
| v > 0 | |
| else | |
| !!v | |
| end | |
| end | |
| end | |
| class Room < APISmith::Smash | |
| property :number_of_adults, :from => :numberOfAdults, :transformer => :to_i | |
| property :number_of_children, :from => :numberOfChildren, :transformer => :to_i | |
| end | |
| class PriceRateInfo < APISmith::Smash | |
| property :average_base_rate, :from => :@averageBaseRate, :transformer => BigDecimalParser | |
| property :average_rate, :from => :@averageRate, :transformer => BigDecimalParser | |
| property :commissionable_usd_total, :from => :@commissionableUsdTotal, :transformer => BigDecimalParser | |
| property :currency_code, :from => :@currencyCode | |
| property :max_nightly_rate, :from => :@maxNightlyRate, :transformer => BigDecimalParser | |
| property :nightly_rate_total, :from => :@nightlyRateTotal, :transformer => BigDecimalParser | |
| property :total, :from => :@total, :transformer => BigDecimalParser | |
| def price | |
| ::Money.new(total * 100, currency_code) | |
| end | |
| end | |
| class RoomGroup < APISmith::Smash | |
| property :room, :from => :Room, :transformer => Room | |
| end | |
| class RateInfo < APISmith::Smash | |
| property :price_breakdown, :from => :@priceBreakdown, :transformer => BooleanParser | |
| property :promo, :from => :@promo, :transformer => BooleanParser | |
| property :rate_change, :from => :@rateChange, :transformer => BooleanParser | |
| property :rooms, :from => :RoomGroup, :transformer => RoomGroup | |
| property :chargeable_rate_info, :from => :ChargeableRateInfo, :transformer => PriceRateInfo | |
| property :converted_rate_info, :from => :ConvertedRateInfo, :transformer => PriceRateInfo | |
| end | |
| class RateInfoList < APISmith::Smash | |
| property :rate_info, :from => :RateInfo, :transformer => RateInfo | |
| end | |
| class Room < APISmith::Smash | |
| property :cancellation_policy, :from => :cancellationPolicy | |
| property :rate_code, :from => :rateCode, :transformer => :to_i | |
| property :room_type_code, :from => :roomTypeCode, :transformer => :to_i | |
| property :rate_description, :from => :rateDescription | |
| property :room_type_description, :from => :roomTypeDescription | |
| property :supplier_type, :from => :supplierType | |
| property :tax_rate, :from => :taxRate, :transformer => BigDecimalParser | |
| property :rate_change, :from => :rateChange, :transformer => BooleanParser | |
| property :non_refundable, :from => :nonRefundable, :transformer => BooleanParser | |
| property :guarantee_required, :from => :guaranteeRequired, :transformer => BooleanParser | |
| property :deposit_required, :from => :depositRequired, :transformer => BooleanParser | |
| property :immediate_charge_required, :from => :immediateChargeRequired, :transformer => BooleanParser | |
| property :current_allotment, :from => :currentAllotment, :transformer => :to_i | |
| property :promo_description, :from => :promoDescription | |
| property :smoking_preferences, :from => :smokingPreferences | |
| property :rate_occupancy_per_room, :from => :rateOccupancyPerRoom, :transformer => :to_i | |
| property :quoted_occupancy, :from => :quotedOccupancy, :transformer => :to_i | |
| property :min_guest_age, :from => :minGuestAge, :transformer => :to_i | |
| property :rate_infos, :from => :RateInfos, :transformer => RateInfoList | |
| end | |
| class HotelResponse < APISmith::Smash | |
| property :hotel_id, :from => :hotelId, :transformer => :to_i | |
| property :arrival_date, :from => :arrivalDate, :transformer => DateParser | |
| property :departure_date, :from => :departureDate, :transformer => DateParser | |
| property :rooms_count, :from => :numberOfRoomsRequested, :transformer => :to_i | |
| property :rate_key, :from => :rateKey | |
| property :rooms, :from => :HotelRoomResponse, :transformer => Room | |
| end | |
| end | |
| json = Pathname.new('/Users/jlecour/Desktop/data.json').read; | |
| data = MultiJson.load(json)["HotelRoomAvailabilityResponse"]; | |
| response = Mapping::HotelResponse.new(data) | |
| puts response.rooms[0].rate_infos.rate_info.chargeable_rate_info.price | |
| binding.pry |
| { | |
| "HotelRoomAvailabilityResponse": { | |
| "@size": "1", | |
| "hotelId": 369364, | |
| "arrivalDate": "10/21/2013", | |
| "departureDate": "10/22/2013", | |
| "hotelName": "1 Lexham Gardens Hotel", | |
| "hotelAddress": "1 Lexham Gardens", | |
| "hotelCity": "London", | |
| "hotelCountry": "GB", | |
| "numberOfRoomsRequested": 1, | |
| "rateKey": "8b2829d3-f997-4a7b-9b04-06c1cecab544", | |
| "HotelRoomResponse": [{ | |
| "cancellationPolicy": "Dieses Angebot ist nicht erstattungsfähig und kann nicht geändert oder storniert werden. Wenn Sie diese Buchung ändern oder stornieren, wird Ihnen Ihr Geld nicht zurückerstattet.", | |
| "rateCode": 200457634, | |
| "roomTypeCode": 200038931, | |
| "rateDescription": "Standard-Zweibettzimmer - Nicht erstattungsfähiges Angebot inkl. Frühstück", | |
| "roomTypeDescription": "Standard-Zweibettzimmer - Nicht erstattungsfähiges Angebot inkl. Frühstück", | |
| "supplierType": "E", | |
| "taxRate": "0.00", | |
| "rateChange": false, | |
| "nonRefundable": true, | |
| "guaranteeRequired": false, | |
| "depositRequired": true, | |
| "immediateChargeRequired": true, | |
| "currentAllotment": 2, | |
| "propertyId": 4149877, | |
| "promoId": 200790274, | |
| "promoDescription": "Bester verfügbarer Preis", | |
| "BedTypes": { | |
| "@size": "1", | |
| "BedType": { | |
| "@id": "25", | |
| "description": "2 Einzelbetten" | |
| } | |
| }, | |
| "CancelPolicyInfoList": { | |
| "CancelPolicyInfo": [{ | |
| "versionId": 208899887, | |
| "cancelTime": "18:00:00", | |
| "startWindowHours": 0, | |
| "nightCount": 0, | |
| "percent": 100, | |
| "currencyCode": "USD", | |
| "timeZoneDescription": "(GMT) Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London" | |
| }, { | |
| "versionId": 209024183, | |
| "cancelTime": "18:00:00", | |
| "startWindowHours": 999, | |
| "nightCount": 0, | |
| "percent": 100, | |
| "currencyCode": "USD", | |
| "timeZoneDescription": "(GMT) Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London" | |
| }] | |
| }, | |
| "smokingPreferences": "NS", | |
| "rateOccupancyPerRoom": 2, | |
| "quotedOccupancy": 2, | |
| "minGuestAge": 0, | |
| "RateInfos": { | |
| "@size": "1", | |
| "RateInfo": { | |
| "@priceBreakdown": "true", | |
| "@promo": "true", | |
| "@rateChange": "false", | |
| "RoomGroup": { | |
| "Room": { | |
| "numberOfAdults": 2, | |
| "numberOfChildren": 0 | |
| } | |
| }, | |
| "ChargeableRateInfo": { | |
| "@averageBaseRate": "153.87", | |
| "@averageRate": "146.18", | |
| "@commissionableUsdTotal": "146.18", | |
| "@currencyCode": "USD", | |
| "@maxNightlyRate": "146.18", | |
| "@nightlyRateTotal": "146.18", | |
| "@total": "146.18", | |
| "NightlyRatesPerRoom": { | |
| "@size": "1", | |
| "NightlyRate": { | |
| "@baseRate": "153.87", | |
| "@rate": "146.18", | |
| "@promo": "true" | |
| } | |
| } | |
| }, | |
| "ConvertedRateInfo": { | |
| "@averageBaseRate": "2793.0176", | |
| "@averageRate": "2653.4302", | |
| "@currencyCode": "CZK", | |
| "@maxNightlyRate": "2653.4302", | |
| "@nightlyRateTotal": "2653.4302", | |
| "@total": "2653.43", | |
| "NightlyRatesPerRoom": { | |
| "@size": "1", | |
| "NightlyRate": { | |
| "@baseRate": "2793.0176", | |
| "@rate": "2653.4302", | |
| "@promo": "true" | |
| } | |
| } | |
| } | |
| } | |
| }, | |
| "ValueAdds": { | |
| "@size": "1", | |
| "ValueAdd": { | |
| "@id": "2", | |
| "description": "Kontinentales Frühstück" | |
| } | |
| } | |
| }] | |
| } | |
| } |
| # encoding: utf-8 | |
| require 'money' | |
| module Mapping | |
| class Room | |
| attribute :number_of_adults, Integer | |
| attribute :number_of_children, Integer | |
| end | |
| class PriceRateInfo | |
| attribute :average_base_rate, BigDecimal | |
| attribute :average_rate, BigDecimal | |
| attribute :commissionable_usd_total, BigDecimal | |
| attribute :currency_code, String | |
| attribute :max_nightly_rate, BigDecimal | |
| attribute :nightly_rate_total, BigDecimal | |
| attribute :total, BigDecimal | |
| def price | |
| Money.new(total * 100, currency_code) | |
| end | |
| end | |
| class RateInfo | |
| attribute :price_breakdown, Boolean | |
| attribute :promo, Boolean | |
| attribute :rate_change, Boolean | |
| attribute :rooms, [Room] | |
| attribute :chargeable_rate_info, PriceRateInfo | |
| attribute :converted_rate_info, PriceRateInfo | |
| end | |
| class RoomResponse | |
| attribute :cancellation_policy, String | |
| attribute :rate_code, Integer | |
| attribute :room_type_code, Integer | |
| attribute :rate_description, String | |
| attribute :room_type_description, String | |
| attribute :supplier_type, String | |
| attribute :tax_rate, BigDecimal | |
| attribute :rate_change, Boolean | |
| attribute :non_refundable, Boolean | |
| attribute :guarantee_required, Boolean | |
| attribute :deposit_required, Boolean | |
| attribute :immediate_charge_required, Boolean | |
| attribute :current_allotment, Integer | |
| attribute :promo_description, String | |
| attribute :smoking_preferences, String | |
| attribute :rate_occupancy_per_room, Integer | |
| attribute :quoted_occupancy, Integer | |
| attribute :min_guest_age, Integer | |
| attribute :rate_infos, [RateInfo] | |
| end | |
| class HotelResponse | |
| attribute :hotel_id, Integer | |
| attribute :arrival_date, Date | |
| attribute :departure_date, Date | |
| attribute :rooms, Integer | |
| attribute :rate_key, String | |
| attribute :rooms, [RoomResponse] | |
| end | |
| end |
