我對使用 Combine 框架完全陌生。我正在使用的結構：
enum AuthenticateResponse: Decodable, Hashable {
struct Success: Decodable, Hashable {
let url, id, firstName, lastName: String
let email, phone: String
}
struct Failure: Decodable, Hashable {
struct Errors: Decodable, Hashable {
let code: [String]?
let username: [String]?
let password: [String]?
}
let message: String
let errors: Errors
}
case success(Success)
case failure(Failure)
init(from decoder: Decoder) throws {
do {
let success = try Success(from: decoder)
self = .success(success)
} catch {
let failure = try Failure(from: decoder)
self = .failure(failure)
}
}
}
我從服務器收到此回應：
failure(demo.AuthenticateResponse.Failure(
message: "Invalid data..",
errors: demo.AuthenticateResponse.Failure.Errors(
code: Optional(["The code does not exist."]),
username: nil,
password: nil)
)
)
我正在嘗試code: Optional(["The code does not exist."]),使用 combine 從上述回應中獲取此值，但我做不到
我正在使用下面的代碼來獲取該值：
func syncOnlineData() {
print("I am here")
viewModel.authenticateResponse
.sink { result in
print("result: \(result)")
} receiveValue: { res in
print("value: \(String(describing: res))")
}
}
服務器的主要回應：
["errors": {
code = (
"The code does not exist."
);
}, "message": Invalid data.]
我將如何從中獲得價值code？
uj5u.com熱心網友回復：
結果是 AuthenticateResponse 對嗎？
如果是這樣的話
.sink { result in
guard case .failure(let failure) = result else { return }
// here is the code for each error
print("do something for code: \(failure.errors.code)")
}
uj5u.com熱心網友回復：
Biclops謝謝你的幫助，給了我光明。如果有人像上面這樣的結構，這是獲得您的價值的最佳方式：
.sink { result in
switch result {
case .none:
print("--")
case .some(let jsonValue):
switch jsonValue {
case .success(let success):
self.verificationMessageLabel.isHidden = true
self.continueButton.isEnabled = true
print("success: \(success)")
case .failure(let fail):
guard let errorMsg = fail.errors.code else { return }
errorMsg.forEach { errString in
print(errString)
}
}
}
}
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