How to serialize or convert Swift objects to JSON?

Question

This below class

class User: NSManagedObject {
  @NSManaged var id: Int
  @NSManaged var name: String
}

Needs to be converted to

Answer 1

struct User:Codable{
 var id:String?
 var name:String?
 init(_ id:String,_ name:String){
   self.id  = id
   self.name = name
 }
}

Now just make your object like this

let user = User("1","pawan")

do{
      let userJson =  try JSONEncoder().encode(parentMessage) 
            
    }catch{
         fatalError("Unable To Convert in Json")      
    }

Then reconvert from json to Object

let jsonDecoder = JSONDecoder()
do{
   let convertedUser = try jsonDecoder.decode(User.self, from: userJson.data(using: .utf8)!)
 }catch{
   
 }