Ошибка добавления NSEntity в NSOrderedSet

Question

У меня есть 2 объекта в моей структуре CoreData, между ними существует связь «один ко многим». В основном объекте у меня есть NSOrderdSet, каждый раз, когда я делаю новое сохранение, я хочу добавить и сохранить второй объект в NSOrderdSet, но я получаю сообщение об ошибке. Вот мой код:

//main Entity 
class Project : NSManagedObject { 
func requestAddNewWeek (value: WeekContent) { 
let mutableCopyOfSet = projectContent?.mutableCopy() as! NSMutableOrderdSet 
mutableCopyOfSet.addObject(value) 
projectContent = mutableCopyOfSet.copy() as ? NSOderedSet 
} 
} 

// ViewController where the save occurs 
class SetupWeekViewController { 
var project : Project? 

@IBAction func saveButton (sender : AnyObject) { 
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate 
let managedContext : NSManagedObjectContext = appDelegate.managedObjectContext 
let entity = NSEntityDescription.entityForName("Content", inManagedObjectContext:managedObjectContext 
//Here is where the error happens 
project!requestAddNewWeek(newWeek) 

managedContext.save() 
} 

// Здесь ошибка я получаю

2015-12-08 11:07:13.392 MySightwords[1998:189666] CoreData: error: -addPersistentStoreWithType:SQLite configuration:(null) URL:file:///Users/Len/Library/Developer/CoreSimulator/Devices/0215DFE7-14EA-459F-991C-5ABF8020712D/data/Containers/Data/Application/7A509174-D568-4CCE-8A3D-9710FF80A9BF/Documents/SingleViewCoreData.sqlite options:(null) ... returned error Error Domain=NSCocoaErrorDomain Code=134100 "(null)" UserInfo={metadata={ 
    NSPersistenceFrameworkVersion = 640; 
    NSStoreModelVersionHashes =  { 
     Content = <16a6b5d3 e57d053c f85d1afa 2efe7c04 8da974e7 127f2c6b 847ea2f0 b63d732f>; 
     Project = <97588fff 696dabc6 896ec617 564b473f f3bc9bdc e6c891b3 84519149 9319c454>; 
     Sightwords = <6bf96219 adc3369d 4eec0597 b40472c3 d3af6a61 3d17bd5d 117885f4 509ecd2e>; 
    }; 
    NSStoreModelVersionHashesVersion = 3; 
    NSStoreModelVersionIdentifiers =  (
     "" 
    ); 
    NSStoreType = SQLite; 
    NSStoreUUID = "270A2DB1-BFDA-41A3-B044-DFBA717A1BDD"; 
    "_NSAutoVacuumLevel" = 2; 
}, reason=The model used to open the store is incompatible with the one used to create the store} with userInfo dictionary { 
    metadata =  { 
     NSPersistenceFrameworkVersion = 640; 
     NSStoreModelVersionHashes =   { 
      Content = <16a6b5d3 e57d053c f85d1afa 2efe7c04 8da974e7 127f2c6b 847ea2f0 b63d732f>; 
      Project = <97588fff 696dabc6 896ec617 564b473f f3bc9bdc e6c891b3 84519149 9319c454>; 
      Sightwords = <6bf96219 adc3369d 4eec0597 b40472c3 d3af6a61 3d17bd5d 117885f4 509ecd2e>; 
     }; 
     NSStoreModelVersionHashesVersion = 3; 
     NSStoreModelVersionIdentifiers =   (
      "" 
     ); 
     NSStoreType = SQLite; 
     NSStoreUUID = "270A2DB1-BFDA-41A3-B044-DFBA717A1BDD"; 
     "_NSAutoVacuumLevel" = 2; 
    }; 
    reason = "The model used to open the store is incompatible with the one used to create the store"; 
} 
2015-12-08 11:07:13.396 MySightwords[1998:189666] Unresolved error Error Domain=YOUR_ERROR_DOMAIN Code=9999 "Failed to initialize the application's saved data" UserInfo={NSLocalizedDescription=Failed to initialize the application's saved data, NSLocalizedFailureReason=There was an error creating or loading the application's saved data., NSUnderlyingError=0x7ff7025e9200 {Error Domain=NSCocoaErrorDomain Code=134100 "(null)" UserInfo={metadata={ 
    NSPersistenceFrameworkVersion = 640; 
    NSStoreModelVersionHashes =  { 
     Content = <16a6b5d3 e57d053c f85d1afa 2efe7c04 8da974e7 127f2c6b 847ea2f0 b63d732f>; 
     Project = <97588fff 696dabc6 896ec617 564b473f f3bc9bdc e6c891b3 84519149 9319c454>; 
     Sightwords = <6bf96219 adc3369d 4eec0597 b40472c3 d3af6a61 3d17bd5d 117885f4 509ecd2e>; 
    }; 
    NSStoreModelVersionHashesVersion = 3; 
    NSStoreModelVersionIdentifiers =  (
     "" 
    ); 
    NSStoreType = SQLite; 
    NSStoreUUID = "270A2DB1-BFDA-41A3-B044-DFBA717A1BDD"; 
    "_NSAutoVacuumLevel" = 2; 
}, reason=The model used to open the store is incompatible with the one used to create the store}}}, [NSLocalizedDescription: Failed to initialize the application's saved data, NSLocalizedFailureReason: There was an error creating or loading the application's saved data., NSUnderlyingError: Error Domain=NSCocoaErrorDomain Code=134100 "(null)" UserInfo={metadata={ 
    NSPersistenceFrameworkVersion = 640; 
    NSStoreModelVersionHashes =  { 
     Content = <16a6b5d3 e57d053c f85d1afa 2efe7c04 8da974e7 127f2c6b 847ea2f0 b63d732f>; 
     Project = <97588fff 696dabc6 896ec617 564b473f f3bc9bdc e6c891b3 84519149 9319c454>; 
     Sightwords = <6bf96219 adc3369d 4eec0597 b40472c3 d3af6a61 3d17bd5d 117885f4 509ecd2e>; 
    }; 
    NSStoreModelVersionHashesVersion = 3; 
    NSStoreModelVersionIdentifiers =  (
     "" 
    ); 
    NSStoreType = SQLite; 
    NSStoreUUID = "270A2DB1-BFDA-41A3-B044-DFBA717A1BDD"; 
    "_NSAutoVacuumLevel" = 2; 
}, reason=The model used to open the store is incompatible with the one used to create the store}] 
(lldb) 

Answer 1

Ее из-за изменения в вашей модели.

Удалите приложение из симулятора и выполните очистку вашего проекта.

Примечание: это только для разработки. Для производства вам необходимо выполнить некоторую миграцию. Google «Core Data Migration», при этом облегченная миграция является самой простой.