Restkit 0.20 CoreData错误“找不到源存储的模型”

Question

我正在尝试使用CoreData配置RestKit。 我收到并出现“找不到源存储的模型”错误。 我使用的是Restkit RKTwitterCoreData示例中的配置。 我在堆栈溢出中发现了一些类似的帖子，其中有人说要删除数据库，但我不知道如何做到这一点，它是在手机上而不是模拟器上运行的。 我也尝试做一个Product：Clean但同样的错误。

 2014-05-18 12:29:16.489 What my life could be[7006:60b] I restkit:RKLog.m:34 RestKit logging initialized...
2014-05-18 12:29:17.259 What my life could be[7006:60b] *** Assertion failure in -[AppDelegate application:didFinishLaunchingWithOptions:], /Users/Pro/Desktop/ios app/What my life could be/What my life could be/AppDelegate.m:161
2014-05-18 12:29:17.262 What my life could be[7006:60b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Failed to add persistent store with error: Error Domain=NSCocoaErrorDomain Code=134130 "The operation couldn’t be completed. (Cocoa error 134130.)" UserInfo=0x15d7fc40 {URL=file:///var/mobile/Applications/2E1DA997-E54E-4CE3-AC62-6552445D77CF/Documents/JustD.sqlite, metadata={
NSPersistenceFrameworkVersion = 479;
NSStoreModelVersionHashes =     {
    ActivityEntity = <fdd7d538 648131cf 2fe3b684 bd55169e 85a7cee4 cbec3080 94202e4c 26b97889>;
    PriorityEntity = <74cd93d0 00ade70c ef4d0ea3 f177762d 7d342720 7aba6945 d83ee02d 96a2135c>;
    UserDataEntity = <2ffd8aec e7c1dacc 23e14fdd 400b60c0 5a1cd9a8 07fe6138 4d0e5a30 8e0c6e28>;
};
NSStoreModelVersionHashesVersion = 3;
NSStoreModelVersionIdentifiers =     (
    ""
);
NSStoreType = SQLite;
NSStoreUUID = "B1BC3FFF-F727-49E4-A44F-5C5216C58226";
"_NSAutoVacuumLevel" = 2;}, reason=Can't find model for source store}'
*** First throw call stack:(0x2ec07e83 0x38f646c7 0x2ec07d55 0x2f5b00af 0xf37bb 0x313fcaad 0x313fc4f3 0x313f6b41 0x31391a07 0x31390cfd 0x313f6321 0x3387676d 0x33876357 0x2ebd2777 0x2ebd2713 0x2ebd0edf 0x2eb3b471 0x2eb3b253 0x313f55c3 0x313f0845 0xf3bc5 0x3945dab7)
libc++abi.dylib: terminating with uncaught exception of type NSException(lldb) 

用于配置商店的代码部分。 我删除了CoreData模板默认代码，双向都出错。 注意：我不确定“ importer importObjectsFromItemAtPath：....”的工作方式。

#ifdef RESTKIT_GENERATE_SEED_DB
RKLogConfigureByName("RestKit/ObjectMapping", RKLogLevelInfo);
RKLogConfigureByName("RestKit/CoreData", RKLogLevelTrace);

NSError *error = nil;
BOOL success = RKEnsureDirectoryExistsAtPath(RKApplicationDataDirectory(), &error);
if (! success) {
    RKLogError(@"Failed to create Application Data Directory at path '%@': %@", RKApplicationDataDirectory(), error);
}
NSString *seedStorePath = [RKApplicationDataDirectory() stringByAppendingPathComponent:@"JustDid.sqlite"];
RKManagedObjectImporter *importer = [[RKManagedObjectImporter alloc] initWithManagedObjectModel:managedObjectModel storePath:seedStorePath];
[importer importObjectsFromItemAtPath:[[NSBundle mainBundle] pathForResource:@"activities" ofType:@"json"]
                          withMapping:activityMapping
                              keyPath:@"activity"
                                error:&error];
[importer importObjectsFromItemAtPath:[[NSBundle mainBundle] pathForResource:@"users" ofType:@"json"]
                          withMapping:userMapping
                              keyPath:@"user"
                                error:&error];
BOOL success = [importer finishImporting:&error];
if (success) {
    [importer logSeedingInfo];
} else {
    RKLogError(@"Failed to finish import and save seed database due to error: %@", error);
}

// Clear out the root view controller
[self.window setRootViewController:[UIViewController new]];
#else
/**
 Complete Core Data stack initialization
 */
[managedObjectStore createPersistentStoreCoordinator];
NSString *storePath = [RKApplicationDataDirectory() stringByAppendingPathComponent:@"JustD.sqlite"];
NSString *seedPath = [[NSBundle mainBundle] pathForResource:@"RKSeedDatabase" ofType:@"sqlite"];
NSError *error;
NSPersistentStore *persistentStore = [managedObjectStore addSQLitePersistentStoreAtPath:storePath fromSeedDatabaseAtPath:seedPath withConfiguration:nil options:nil error:&error];
NSAssert(persistentStore, @"Failed to add persistent store with error: %@", error);

// Create the managed object contexts
[managedObjectStore createManagedObjectContexts];

// Configure a managed object cache to ensure we do not create duplicate objects
managedObjectStore.managedObjectCache = [[RKInMemoryManagedObjectCache alloc] initWithManagedObjectContext:managedObjectStore.persistentStoreManagedObjectContext];
#endif

Answer 1

看起来您已经更改了核心数据模型的版本，并且没有要求核心数据尝试自动迁移或显式提供了迁移。 因此，在加载核心数据时，它会检测版本不匹配并中止。

最初，请从您的设备中删除该应用，然后重新安装，然后一切都会恢复正常。 每次更改数据模型时，都需要执行此操作。

显然，那样去App Store不是一个好主意，因此您应该研究自动迁移及其约束和（如果需要）显式迁移。

Answer 2

要删除数据库，只需删除sqlite文件即可，考虑到您的日志记录，该文件应位于/var/mobile/Applications/2E1DA997-E54E-4CE3-AC62-6552445D77CF/Documents/JustD.sqlite

在控制台中：rm /var/mobile/Applications/2E1DA997-E54E-4CE3-AC62-6552445D77CF/Documents/JustD.sqlite

Answer 3

您是否已确保将种子数据库添加到构建阶段：复制捆绑资源？

我只是在几个小时内遇到了同样的问题，最后就这么简单。 即使在模拟器部署的应用程序包中查找，种子sqlit文件也在那里，但是由于某种原因，managedObjectStore找不到它，而是返回“找不到源存储的模型”错误，而不是“找不到”种子数据文件”，这会更有帮助！