How to save data from JSON to model - swift

Question

I have an API, I parse it with alomofire, and I want to save parsed json to Model
This is my request and I want to save chats to ChatInstanceModel.
This is my NetworkingManager class
func getChatList(completionHandler: (#escaping (ChatInstanceModel) -> Void)) {
guard let url = URL(string: urlOfIntanceAPI) else { return }
let headers: HTTPHeaders = [
"Authorization" : "FastToken 8af34fc7c2557517d8a3e747e497de6491a16350df6fa0af8afcbbe72035484efae69d46efa8a47feb75be3250d025b01f42b3b5ad723e5a32afc887c1f6879629b86655ce49e19cada8e289b38d79061160f538c6fa59388076396de1cd2886e2c2e8c5f706ad2bb79a23f034b889c835dd288e44c0cc257d048a22093e51226a60b198bf72aa40a11829771147b4d5"
]
AF.request(url, method: .get, headers: headers).responseData { (responseData) in
switch responseData.result {
case .success(let data):
guard let chats = try? JSONDecoder().decode(ChatInstanceModel.self, from: data) else { return }
completionHandler(chats)
case .failure(let error):
print(error)
}
}
}
This is my model:
struct ChatInstanceModel: Codable {
let title: String
let avatar: String?
let unread_client: Int?
}
This is api which I want to save
{
"pk": 3,
"title": "None",
"avatar": null,
"unread_client": 0,
"unread_manager": 0,
"is_online": false,
"is_typing": false,
"last_seen": null,
"manager": null,
"last_update": null
}

Answer 1

Here is an example of how you can save the ChatInstanceModel instance after the getting the response from API using the completionHandler.
class ViewController: UIViewController {
var chats: ChatInstanceModel?
override func viewDidLoad() {
super.viewDidLoad()
getChatList { (chats) in
self.chats = chats
}
}
}
That's just a simple example for your problem statement currently specified.

Answer 2

Please find an example:
import Alamofire
// Your Model
struct ChatInstanceModel: Codable {
let title: String
let avatar: String?
let unread_client: Int?
}
// Your View Controller
class ViewController: UIViewController {
// Your chat instance
var chats: ChatInstanceModel? = nil
override func viewDidLoad() {
super.viewDidLoad()
getChatList { (chats) in
self.chats = chats
print(self.chats?.title)
}
}
// Get chat list from api
func getChatList(completionHandler: (#escaping (ChatInstanceModel) -> Void)) {
guard let url = URL(string: "<API_URL>") else { return }
let headers: HTTPHeaders = [
"Authorization" : "<TOKEN>"
]
let request = AF.request(url, method: .get, headers: headers)
request.responseDecodable(of: ChatInstanceModel.self) { (dataResponse) in
switch dataResponse.result {
case .success(let data):
completionHandler(data)
case .failure(let error):
print("Error", error.localizedDescription)
}
}
}
}