Realm & Swift Codable

JSON

{
 "id": 732,
 "name": "Vendor Name",
 "logo": ".../thumb/missing.png",
 "kitchens": [
 {
 "id": 36,
 "name": "Sandwiches"
 },
 {
 "id": 37,
 "name": "Fast Food"
 }
 ]
 }

Model

import RealmSwift
class VendorsList : Object, Decodable {
 @objc dynamic var id : Int = 0
 @objc dynamic var name : String?
 @objc dynamic var logo : String?
 // Create your Realm List.
 var kitchensList = List<VendorKitchens>()
 
 override class func primaryKey() -> String? {
 return "id"
 }
 
 private enum CodingKeys: String, CodingKey {
 case id
 case name
 case logo
 // Set JSON Object Key
 case kitchensList = "kitchens"
 }
 
 public required convenience init(from decoder: Decoder) throws {
 self.init()
 let container = try decoder.container(keyedBy: CodingKeys.self)
 self.id = try container.decode(Int.self, forKey: .id)
 self.name = try container.decode(String.self, forKey: .name)
 self.logo = try container.decode(String.self, forKey: .logo)
 // Map your JSON Array response
 let kitchens = try container.decodeIfPresent([VendorKitchens].self, forKey: .kitchensList) ?? [VendorKitchens()]
 kitchensList.append(objectsIn: kitchens)
 
 }
 
}
class VendorKitchens : Object, Decodable {
 @objc dynamic var id : Int = 0
 @objc dynamic var name : String?
 
 override class func primaryKey() -> String? {
 return "id"
 }
 private enum CodingKeys: String, CodingKey {
 case id
 case name
 }
}

URLSession

guard let getUrl = URL(string: "https://Your_Endpoint/.../") else { return }
 URLSession.shared.dataTask(with: getUrl) { (data, response, error) in
 guard let data = data else { return }
 do {
 let decoder = JSONDecoder()
 let getData = try decoder.decode([VendorsList].self, from: data)
 for data in getData {
 print(data.id)
 print(data.name)
 print(data.logo)
 }
 for kitchen in data.kitchensList {
 print(kitchen.name)
 }
 }
 } catch let err {
 print("Err", err)
 }
 }.resume()