How to append list property of an object Realmswift

Question

I have two classes :

First One:

class GameObject: Object {
    @objc dynamic var gameOutcome: String? = nil
    @objc dynamic  var Goal : Int = 0

}

Second One:

 class GamesObject: Object {
    let games = List<GameObject>()
}

On the addGameVC, I add a game save it on the GameObject with realm and appending the game to the list property within a write. My goal is to have a GamesObject including a list of all added game(s).So I can display them on a TableView. However when I add for example two games, what I get is 2 GamesObject, including each of them two list of GameObject. I thought by removing the following line

realm.add(games)

would only append the game to the list property and would avoid adding a gamesObject. What am i missing it order to make it work ?

Thanks for reading.

class AddGameViewController: UIViewController{
        

        let realm = try! Realm()
         var realmGame = GameObject()
        let gamesList = GamesObject()

     @IBAction func addButtonPressed(_ sender: UIButton) {
         realmGame.gameOutcome = matchOutcome
         realmGame.goal = (Int(goal.text!) ?? 0)
         saveOnRealm(games: gamesList, game: realmGame)
    }

    
    func saveOnRealm(games: GamesObject, game: GameObject){
        do {
            try realm.write {
                
                games.gamess.append(game)
                realm.add(game)
                realm.add(games)
                
            }
        } catch {
            print("error \(error)")
        }
    }

}

Answer 1

Your code produces this behaviour because the add button will add a new GamesObject into realm every time. To fix this, you need to only put the GamesList into Realm if it is the first time you are adding a game.

You should also create a new GameObject each time you press the add button.

class AddGameViewController: UIViewController{
    let realm = try! Realm()
    let gamesList = GamesObject()

    @IBAction func addButtonPressed(_ sender: UIButton) {
        let realmGame = GameObject() // I moved realmGame inside the button action
        realmGame.gameOutcome = matchOutcome
        realmGame.goal = (Int(goal.text!) ?? 0)
        saveOnRealm(game: realmGame)
    }

    
    func saveOnRealm(game: GameObject){
        do {
            try realm.write {
                if gamesList.gamess.isEmpty { // first time
                    realm.add(gamesList)
                }
                gamesList.gamess.append(game) // this also adds game into realm
                
            }
        } catch {
            print("error \(error)")
        }
    }

}