使用枚举作为 Realm 模型的属性 [英] Using enum as property of Realm model

问题描述

是否可以将 Enum 用作我的模型的属性?我目前有一个这样的课程:

Is it possible to use an Enum as a property for my model? I currently have a class like this:

class Checkin: RLMObject {
  dynamic var id: Int = 0
  dynamic var kind: String = "checked_in"
  var kindEnum: Kind = .CheckedIn {
    willSet { self.kind = newValue.rawValue }
  }

  enum Kind: String {
    case CheckedIn = "checked_in"
    case EnRoute = "en_route"
    case DroppedOff = "dropped_off"
  }
  ....
}

它工作正常，但我希望能够将 kind 属性设为 Enum 并让 Realm 在该属性上自动调用 .rawValue将对象保存到商店.这在 Realm 中是可能的，还是已经有功能请求了?

It works okay, but I'd like to be able to have the kind property be the Enum and have Realm automatically call .rawValue on the property when it is saving an object to the store. Is this possible in Realm or is there a feature request already out there for it?

推荐答案

对于这种情况，您应该覆盖 kindEnum 的 setter 和 getter:

You should override your kindEnum's setter and getter for this case:

enum Kind: String {
  case CheckedIn
  case EnRoute
  case DroppedOff
}

class Checkin: Object {
  @objc dynamic var id = 0
  var kind = Kind.CheckedIn.rawValue
  var kindEnum: Kind {
    get {
      return Kind(rawValue: kind)!
    }
    set {
      kind = newValue.rawValue
    }
  }
}

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