サーバー側の仕様変更にCodableで対応する

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1. αʔόʔଆͷ࢓༷มߋʹ CodableͰରԠ͢Δ ROPPONGI.swift ୈ1ճ 2018೥2݄23೔ ࠤ౻߶࢜ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 1

2. Who am I ࠤ౻߶࢜ (@hatakenokakashi) MAMORIOגࣜձࣾͰiOSΤϯδχΞ͠ ͍ͯ·͢ɻ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 2

3. Swift4͔ΒCodable͕ ௥Ճ͞Ε·ͨ͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 3

4. Codableͱ͸ • σʔλͷγϦΞϥΠζɺσγϦΞϥΠζΛܕ҆શͰѻ͑Δϓ ϩτίϧ • Ҏલ͔Β߹ͬͨNSCoding΍JSONSerializationɺ PropertyListSerializationͱ͸ҟͳΓܕΛͦͷ··ѻ͑Δ = more Swifty

   ! αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 4

5. Codableͷ͓͞Β͍ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 5

6. CodableରԠͷܕΛ࡞Δ struct DeviceRequestData: Codable { var uuid: String? var deviceToken:

   String? var modelName: String //JSONͷKeyʹରԠ //ࣗಈΤϯίʔυɺσίʔυʹ೚ͤΔͳΒ`CodingKeys`ͱ͍͏໊લʹ͢Δ enum CodingKeys: String, CodingKey { case uuid case deviceToken = "device_token" case modelName = "model_name" } } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 6

7. Τϯίʔυ let deviceRequestData = DeviceRequestData(uuid: "AAAA", deviceToken: "aaaaaa", modelName: "iPhoneX")

   let jsonData = try JSONEncoder().encode(deviceRequestData) let jsonString = String(data: jsonData, encoding: .utf8)! print(jsonString) αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 7

8. JSON͕࡞੒͞ΕΔ { "device_token": "aaaaaa", "model_name": "iPhoneX", "uuid": "AAAA" } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ

   8

9. αʔόʔνʔϜΑΓ࢓༷ มߋͷ͓஌Βͤ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 9

10. deviceͱ͍͏ΩʔΛτοϓʹ௥Ճ { "device": { "device_token": "aaaaaa", "model_name": "iPhoneX", "uuid": "AAAA"

    } } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 10

11. ௚͠·͠ΐ͏ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 11

12. ରԠํ๏1 ܕΛ৽͘͠࡞Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 12

13. DeviceܕΛ௥Ճ struct Device: Codable { var uuid: String? var deviceToken:

    String? var modelName: String enum CodingKeys: String, CodingKey { case uuid case deviceToken = "device_token" case modelName = "model_name" } } struct DeviceRequestData: Codable { var device: Device } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 13

14. ܕͷϓϩύςΟ ᴹᴹ JSONKey αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 14

15. Τϯίʔυ let device = Device(uuid: "AAAA", deviceToken: "aaaaaa", modelName: "iPhoneX")

    let deviceRequestData = DeviceRequestData(device: device) let jsonData = try JSONEncoder().encode(deviceRequestData) let jsonString = String(data: jsonData, encoding: .utf8)! print(jsonString) αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 15

16. ରԠํ๏2 ϚχϡΞϧΤϯίʔυ࣮૷͢Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 16

17. encode(to:)ϝιουΛ࣮૷͢Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 17

18. αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 18

19. αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 19

20. αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 20

21. αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 21

22. αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 22

23. σʔλ͕nilͳΒjsonͷΩ ʔΛ֎ͯ͠΄͍͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 23

24. ରԠํ๏ ϚχϡΞϧΤϯίʔυ & encodeIfPresentΛ࢖͏ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 24

25. encodeϝιουͰencodeIfPresent ͰΤϯίʔυ func encode(to encoder: Encoder) throws { var container

    = encoder.container(keyedBy: RootKeys.self) var nestObject = container.nestedContainer(keyedBy: CodingKeys.self, forKey: .device) try nestObject.encode(uuid, forKey: .uuid) try nestObject.encodeIfPresent(deviceToken, forKey: .deviceToken) try nestObject.encode(modelName, forKey: .modelName) } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 25

26. nilͷ஋ΛೖΕΔ let deviceRequestData = DeviceRequestData(uuid: nil, deviceToken: nil, modelName: "iPhoneX")

    let jsonData = try JSONEncoder().encode(deviceRequestData) let jsonString = String(data: jsonData, encoding: .utf8)! print(jsonString) αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 26

27. encodeIfPresent͸nilͳΒΩʔ͝ͱ ࡟আ { "device": { "model_name": "iPhoneX", "uuid": null }

    } encode͸஋͕nullʹͳΔ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 27

28. طଘͷܕΛCodableʹର Ԡ͢Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 28

29. Codableʹ४ڌ͍ͯ͠ͳ͍ܕΛ࣋ͬͯ ͍Δ struct DeviceRequestData: Codable { var uuid: String? var

    deviceToken: String? var modelName: ModelName //Codableʹ४ڌ͍ͯ͠ͳ͍ܕ enum CodingKeys: String, CodingKey { case uuid case deviceToken = "device_token" case modelName = "model_name" } } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 29

30. ରԠํ๏ Τϯίʔυ͍ͨ࣌͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 30

31. Codableʹ४ڌͤ͞Δ enum ModelName: String, Codable { case iPhoneX case iPhone8

    case iPhone8Plus = "iPhone8 Plus" case iPadPro = "iPad Pro" } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 31

32. Τϯίʔυ let deviceRequestData = DeviceRequestData(uuid: "AAAA", deviceToken: "aaaa", modelName: ModelName.iPadPro)

    let jsonData = try JSONEncoder().encode(deviceRequestData) let jsonString = String(data: jsonData, encoding: .utf8)! print(jsonString) αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 32

33. ݁Ռ { "device_token": "aaaa", "model_name": "iPad Pro", "uuid": "AAAA" }

    αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 33

34. ରԠํ๏ Τϯίʔυ͠ͳͯ͘Α͍࣌ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 34

35. ॳظ஋ͱCodingKeysʹΩʔΛؚΊͳ ͍ struct DeviceRequestData: Codable { var uuid: String? =

    "" var deviceToken: String? = "" var modelName: ModelName = ModelName.iPhoneX enum CodingKeys: String, CodingKey { case uuid case deviceToken = "device_token" } } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 35

36. Τϯίʔυ let deviceRequestData = DeviceRequestData(uuid: "AAAA", deviceToken: "aaaa", modelName: ModelName.iPadPro)

    let jsonData = try JSONEncoder().encode(deviceRequestData) let jsonString = String(data: jsonData, encoding: .utf8)! print(jsonString) αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 36

37. ݁Ռ { "device_token": "aaaa", "uuid": "AAAA" } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 37

38. ·ͱΊ • JSONߏ଄͕มΘͬͨͱ͖ • ܕΛ࡞Δ͔ϚχϡΞϧΤϯίʔυΛ͢Δ • σʔλ͕nilͳΒjsonͷΩʔΛ֎͢ • ϚχϡΞϧΤϯίʔυͰencodeIfPresentΛ࢖͏ •

    Codableʹ४ڌ͠ͳ͍ܕΛ͍࣋ͬͯΔ࣌ • Τϯίʔυ͢ΔͳΒ४ڌ͢Δ • Τϯίʔυ͠ͳ͍ͳΒCodingKeysͰྻڍΛ֎͢ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 38

39. ͍͞͝ʹ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 39

40. ੵۃతʹϝϯόʔืूதʂ https://www.wantedly.com/companies/mamorio • iOSΤϯδχΞ • AndroidΤϯδχΞ • UI/UXσβΠφʔ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 40

41. MAMORIOגࣜձࣾ͸try! SwiftΛεϙϯαʔ υ͍ͯ͠·͢! αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 41