copyWithZone使用mogenerator

Question

我正在使用Mogenerator来生成我的模型。所以在我的人体模型中我有

- (id)copyWithZone:(NSZone *)zone
{
    AppointmentGrid *appointmentGridCopy = [[[self class] allocWithZone:zone] init];
    [appointmentGridCopy setEmployeeId:self.employeeId];
    [appointmentGridCopy setEmployeeObject:self.employeeObject];
    [appointmentGridCopy setServiceId:self.serviceId];
    [appointmentGridCopy setServiceObject:self.serviceObject];
    [appointmentGridCopy setStartTimestamp:self.startTimestamp];
    [appointmentGridCopy setEndTimestamp:self.endTimestamp];
    [appointmentGridCopy setAppointmentGridSlots:self.appointmentGridSlots];

    return appointmentGridCopy;
}

由于Machine类具有所有属性，因此我没有将它们读入Human文件中。但是我收到了错误

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[AppointmentGrid setEmployeeId:]: unrecognized selector sent to instance

我真的需要重新定义Human文件中的所有内容吗？

Answer 1

NSManagedObject 的实例必须使用指定的初始化

创建

initWithEntity:insertIntoManagedObjectContext:

Core Data属性访问器方法是在运行时动态创建的 如果使用普通init方法创建对象，则无法工作。

这可能有用（未经测试）：

AppointmentGrid *appointmentGridCopy = [[[self class] allocWithZone:zone] 
    initWithEntity:self.entity
    insertIntoManagedObjectContext:self.managedObjectContext];