复合键懒财产

Question

我发现这个伟大的解决方案，用于斯威夫特利用领域具有复合主键：https://github.com/realm/realm-cocoa/issues/1192

public final class Card: Object { 
    public dynamic var id = 0 { 
     didSet { 
      compoundKey = compoundKeyValue() 
     } 
    } 
    public dynamic var type = "" { 
     didSet { 
      compoundKey = compoundKeyValue() 
     } 
    } 
    public dynamic lazy var compoundKey: String = self.compoundKeyValue() 
    public override static func primaryKey() -> String? { 
     return "compoundKey" 
    } 

    private func compoundKeyValue() -> String { 
     return "\(id)-\(type)" 
    } 
} 

但我发现，境界不支持懒惰性，在我来说，我收到此错误：

exception NSException * name: "RLMException" - reason: "Lazy managed property 'compoundKey' is not allowed on a Realm Swift object class. Either add the property to the ignored properties list or make it non-lazy." 0x00007f8a05108060

是否仍然有可能没有惰性属性的复合键？

Answer 1

您发现的解决方案已过时。我会留下一个关于那里的笔记。我建议删除lazy修饰符并将compoundKey初始化为空字符串。