快速错误"Type 'BookingDataModel' does not conform to protocol 'Decodable'"

Question

我想按照客户的要求让我的应用程序的某些部分离线。我一直在绞尽脑汁让我的结构可编码，这样我就可以将数据保存到用户默认值，但我总是收到这个错误

类型"BookingDataModel"不符合协议"可解码">

这是我的BookingDataModal:

struct BookingDataModel: Codable {
static var shared = BookingDataModel()
var collaps = false
var _id = ""
var userId = ""
var venderName = ""
var created_at = ""
var transaction_id = ""
var payment_method = ""
var updated_at = ""
var booking_confirmed = false
var booking_status = ""
var payment_status = false
var type = ""
var isCanceledRequest: Bool?
var flight: [FlightBookingDataModel]?
var newFlight: (departure: [FlightBookingDataModel], return: [FlightBookingDataModel])?
var event: HotelBookingDataModel?
var hotel: NewHotelBookingDataModel?//HotelBookingDataModel?
var isAxaPolicy = false
var relationshipId = ""
var passengers = [UsersModel]()
var total = 0.0
var tacCoinDiscount: Int?
var couponDiscount: Int?
var afterDiscountAmount: Int?
func getBookingDataModel(arr: NSArray, type: String) -> [BookingDataModel] {
// save data from API
}
}

起初，我认为我的其他模态是不可编码的，所以我把它们都设置为可编码，但它仍然会抛出同样的错误这是FlightBookingDataModal:

struct FlightBookingDataModel: Codable {
static var shared = FlightBookingDataModel()
var pnrData = PNRDataModel()
var src_name = ""
var dst_name = ""
var srcCode = ""
var dstCode = ""
var atime_utc = String()
var dtime_utc = String()
var atime = String()
var dtime = String()
var flight_no = ""
var checkin = ""
var price = 0.0
var airLineName = ""
var eticket_link = ""
var invoice = ""
var isReturnFlight = false
func getFlightBookigDataModel(dict: NSDictionary) -> [FlightBookingDataModel] {
// Save data from API
}
}

PNR模式：

class PNRDataModel: Codable  {
var src = ""
var dst = ""
var iata = ""
var pnr = ""
}

酒店预订数据模型：

struct HotelBookingDataModel: Codable {
var cityName = ""
var name = ""
var address = ""
var startOfServiceTime = ""
var endOfServiceTime = ""
var aetherReference = ""
var provider = ""
var reference = ""
var price = 0.0
var date = ""
var reservationId = ""
}

新酒店预订数据模型：

struct NewHotelBookingDataModel: Codable {
var name = ""
var address = ""
var cityName = ""
var price = 0.0
var reference = ""
var provider = "" //not found in new response
var startOfServiceTime = ""
var endOfServiceTime = ""
var aetherReference = ""
}

如果有人能告诉我为什么这不起作用，那将对我有很大帮助。我只想离线保存[BookingDataModal]一段有限的时间，直到用户恢复在线。

Answer 1

错误的原因是BookingDataModel中的属性newFlight。

Codable不支持元组。