swift - Realm - 属性不能标记为动态，因为它的类型不能在 Objective-C 中表示

Question

我正在尝试实现以下场景，但我遇到了问题

class CommentsModel: Object {
  dynamic var commentId = ""
  dynamic var ownerId: UserModel?
  dynamic var treeLevel = 0
  dynamic var message = ""
  dynamic var modifiedTs = NSDate()
  dynamic var createdTs = NSDate()

 //facing issue here 
 dynamic var childComments = List<CommentsModel>()
}

我有一个评论模型，它具有非可选属性，其中 childComments 是相同评论模型类的列表。在此当我声明dynamic var childComments = List<CommentsModel>()

it shows me Property cannot be marked dynamic because its type cannot be represented in Objective-C.

请帮助我如何实现我的要求

Answer 1

List and RealmOptional properties cannot be declared as dynamic because generic properties cannot be represented in the Objective‑C runtime, which is used for dynamic dispatch of dynamic properties, and should always be declared with let.

了解更多信息 Docs .

所以你应该这样声明childComments:

let childComments = List<CommentsModel>()