サーバー側の仕様変更にCodableで対応する

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

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

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Swift4͔ΒCodable͕ ௥Ճ͞Ε·ͨ͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 3

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Codableͱ͸ • σʔλͷγϦΞϥΠζɺσγϦΞϥΠζΛܕ҆શͰѻ͑Δϓ ϩτίϧ • Ҏલ͔Β߹ͬͨNSCoding΍JSONSerializationɺ PropertyListSerializationͱ͸ҟͳΓܕΛͦͷ··ѻ͑Δ = more Swifty ! αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 4

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Codableͷ͓͞Β͍ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 5

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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

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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

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

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αʔόʔνʔϜΑΓ࢓༷ มߋͷ͓஌Βͤ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 9

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deviceͱ͍͏ΩʔΛτοϓʹ௥Ճ { "device": { "device_token": "aaaaaa", "model_name": "iPhoneX", "uuid": "AAAA" } } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 10

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௚͠·͠ΐ͏ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 11

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ରԠํ๏1 ܕΛ৽͘͠࡞Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 12

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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

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ܕͷϓϩύςΟ ᴹᴹ JSONKey αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 14

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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

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ରԠํ๏2 ϚχϡΞϧΤϯίʔυ࣮૷͢Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 16

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

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αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 18

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αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 19

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αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 20

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αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 21

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αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 22

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σʔλ͕nilͳΒjsonͷΩ ʔΛ֎ͯ͠΄͍͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 23

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ରԠํ๏ ϚχϡΞϧΤϯίʔυ & encodeIfPresentΛ࢖͏ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 24

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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

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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

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encodeIfPresent͸nilͳΒΩʔ͝ͱ ࡟আ { "device": { "model_name": "iPhoneX", "uuid": null } } encode͸஋͕nullʹͳΔ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 27

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طଘͷܕΛCodableʹର Ԡ͢Δ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 28

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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

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ରԠํ๏ Τϯίʔυ͍ͨ࣌͠ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 30

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Codableʹ४ڌͤ͞Δ enum ModelName: String, Codable { case iPhoneX case iPhone8 case iPhone8Plus = "iPhone8 Plus" case iPadPro = "iPad Pro" } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 31

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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

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݁Ռ { "device_token": "aaaa", "model_name": "iPad Pro", "uuid": "AAAA" } αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 33

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ରԠํ๏ Τϯίʔυ͠ͳͯ͘Α͍࣌ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 34

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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

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

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·ͱΊ • JSONߏ଄͕มΘͬͨͱ͖ • ܕΛ࡞Δ͔ϚχϡΞϧΤϯίʔυΛ͢Δ • σʔλ͕nilͳΒjsonͷΩʔΛ֎͢ • ϚχϡΞϧΤϯίʔυͰencodeIfPresentΛ࢖͏ • Codableʹ४ڌ͠ͳ͍ܕΛ͍࣋ͬͯΔ࣌ • Τϯίʔυ͢ΔͳΒ४ڌ͢Δ • Τϯίʔυ͠ͳ͍ͳΒCodingKeysͰྻڍΛ֎͢ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 38

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͍͞͝ʹ αʔόʔଆͷ࢓༷มߋʹCodableͰରԠ͢Δ 39

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

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