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

{     "id" : 98,     "name" : "Jon Doe" } 

I tried manually passing the object to a function which sets the variables into a dictionary and returns the dictionary. But I would want a better way to accomplish this.

Answer 1

In Swift 4, you can inherit from the Codable type.

struct Dog: Codable {     var name: String     var owner: String }  // Encode let dog = Dog(name: "Rex", owner: "Etgar")  let jsonEncoder = JSONEncoder() let jsonData = try jsonEncoder.encode(dog) let json = String(data: jsonData, encoding: String.Encoding.utf16)  // Decode let jsonDecoder = JSONDecoder() let secondDog = try jsonDecoder.decode(Dog.self, from: jsonData)