是否可以在 RealmSwift 中使用枚举？

我想做这样的事情：

enum WeekDay {
    case Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
}

class Person: Object {

    dynamic var birthday: WeekDay? = .Monday
    dynamic var id: String? = nil
    dynamic var birthdayRaw: String? = nil

    override static func primaryKey() -> String? {
        return "id"
    }
}

但是，我收到错误：

属性不能标记为动态，因为其类型不能 以 Objective-C 表示

我该如何解决这个问题？谢谢你的帮助。

Realm 没有直接的方法来做到这一点。GitHub问题。 https://github.com/realm/realm-cocoa/issues/921

但你可以考虑这个技巧

enum WeekDay: String {
    case Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
}

class Person: Object {
    private var _day: WeekDay?
    var birthday: WeekDay? {
        get {
            if let resolTypeRaw = birthdayRaw  {
                _day = WeekDay(rawValue: resolTypeRaw)
                return _day
            }
            return .Sunday
        }
        set {
            birthdayRaw = newValue?.rawValue
            _day = newValue
        }
    }

    dynamic var id: String? = nil
    dynamic var birthdayRaw: String? = nil

    override static func primaryKey() -> String? {
        return "id"
    }
}