Swift passing method params Struct Decodable - json

Question

,Swift 4 how can I pass Decodable Struct in method params and parse it in JSONDecoder()?
error:
Cannot invoke 'decode' with an argument list of type '(Decodable,
from: Data)'
struct JsonRespons: Codable {
let uid: String
let msisdn: String
let APK: String
let fname: String
let lname: String
}
struct JsonResponsError: Decodable {
let uid: String
let error: String
}
extension UIView {
func phoneAuth(serverApi path:String, jsonStruct:Codable){
let jsonUrlString = Globals.JOSN_API_URL + path
guard let url = URL(string: jsonUrlString) else {
return
}
URLSession.shared.dataTask(with: url) { (data, response, err) in
guard err == nil else {
return
}
guard let data = data else { return }
do {
let result = try JSONDecoder().decode(jsonStruct.self, from: data)
self.handleJsonResult(resalt: result as AnyObject)
} catch let jsonErr {
print("Error serializing json:", jsonErr)
}
}.resume()
}
func handleJsonResult(resalt:AnyObject){
print(resalt)
}
}

Answer 1

Adding Codable to the inheritance list for Landmark triggers an automatic conformance that satisfies all of the protocol requirements from Encodable and Decodable:
You can Use Codable
struct Landmark: Codable {
var name: String
var foundingYear: Int
// Landmark now supports the Codable methods init(from:) and encode(to:),
// even though they aren't written as part of its declaration.
}
Alternative solution is
func phoneAuth(serverApi path: String, Completion block: #escaping ((Data) -> ())) {
URLSession.shared.dataTask(with: URL(string: url)!) { (data, res, err) in
if let d = data {
block(d)
}
}.resume()
}
Call a Methods
phoneAuth(serverApi: "yourUrl") { (data) in
do {
let result = try JSONDecoder().decode(YourDecodable.self, from: data)
} catch let jsonErr {
print("Error serializing json:", jsonErr)
}
}

Answer 2

You don't have to pass it as a parameter, you can achieve decoding like below
extension UIView {
func phoneAuth(serverApi path:String){
let jsonUrlString = Globals.JOSN_API_URL + path
guard let url = URL(string: jsonUrlString) else {
return
}
URLSession.shared.dataTask(with: url) { (data, response, err) in
guard err == nil else {
return
}
guard let data = data else { return }
do {
let result = try JSONDecoder().decode(JsonRespons.self, from: data)
self.handleJsonResult(resalt: result as AnyObject)
} catch let jsonErr {
print("Error serializing json:", jsonErr)
}
}.resume()
}