轻量级迁移后在“User*”类型的对象上找不到属性“package_number_7”

Question

我有一个基于CoreData的应用程序。在我的数据模型中，我更改了数据模型，只需添加到用户实体行"package_number_7“并使用Lightwight迁移(只需调整应用程序委托)。现在，当我想在fetch请求中使用这个"package_number_7“时，它不工作了。以下是视图控制器的示例代码

- (BOOL)paidPackage:(int)package_id
{

    int result = 0;
    CoreDataStack *dataStack = [CoreDataStack defaultStack];

    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    [fetchRequest setFetchLimit:1];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"User" inManagedObjectContext:dataStack.managedObjectContext];

    [fetchRequest setEntity:entity];

    NSError *error;
    NSArray *fetchedObjects = [dataStack.managedObjectContext executeFetchRequest:fetchRequest error:&error];
    for (User *s in fetchedObjects) {

        switch (package_id)
        {
            case 1:
                result = [s.paid_package_1 boolValue]; // Balicek 1
                break;
            case 2:
                result = [s.paid_package_2 boolValue]; // Balicek 2
                break;
            case 3:
                result = [s.paid_package_3 boolValue]; // Balicek 3
                break;
            case 4:
                result = [s.paid_package_4 boolValue]; // Balicek 4
                break;
            case 5:
                result = [s.paid_package_5 boolValue]; // Balicek 5
                break;
            case 6:
                result = [s.paid_package_6 boolValue]; // Balicek 6
                break;
            case 7:
                result = [s.paid_package_7 boolValue]; // Balicek 7
                break;
            case 8:
                //result = [s.paid_package_8 boolValue]; // Balicek 8
            default:
                break;
        }
    }

    return result;

}

package_number_7的错误是->属性'package_number_7‘在'User *’类型的中找不到

我已经尝试了干净的应用程序，并再次重建。

Answer 1

如果您错过要声明的"package_number_7“，请检查您的用户类头文件。