Realm-iOS：保存后对象引用设置为nil

我有两个class： 公司和员工 。 两者都inheritance了Realm Object类。

class Company:Object { var name:String = "" var employee:Employee? override static func primaryKey() -> String? { return "name" } } class Employee:Object { var name:String = "" var age:Int = 0 override static func primaryKey() -> String? { return "name" } } 

填充对象

  var emp = Employee() emp.name = "Sachin" emp.age = 35 var comp = Company() comp.name = "BCCI" comp.employee = emp println("Before: \(comp.employee)") var realm = Realm() realm.write { println("Before Add: \(comp.employee)") realm.add(comp, update: true) println("In Block: \(comp.employee)") } println("After: \(comp.employee)") 

结果：

之前：员工{name = Sachin; 年龄= 35岁; }
之前添加：员工{name = Sachin; 年龄= 35岁; }
座位：无
之后：没有

问题：为什么在realm.add()操作之后，Company的employee属性对象为nil？ 有什么想法吗？

Answer 1

对于所有Realm Swift属性（ List除外），您需要将属性声明为dynamic 。 将模型定义更改为以下内容应该有所帮助！

 class Company:Object { dynamic var name:String = "" dynamic var employee:Employee? override static func primaryKey() -> String? { return "name" } } class Employee:Object { dynamic var name:String = "" dynamic var age:Int = 0 override static func primaryKey() -> String? { return "name" } }