使用RestKit的核心數據初始化0.20

我試圖將使用Restkit 0.1的現有應用程序更新爲0.20，但在設置核心數據堆棧時遇到了一些問題，因爲它運行到異常中。使用RestKit的核心數據初始化0.20

我有下面的代碼在我的AppDelegate：

 /* 
    Complete Core Data stack initialization 
    */ 
    NSError *error = nil; 
    NSURL *modelURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"AppModel" ofType:@"momd"]]; 
    // NOTE: Due to an iOS 5 bug, the managed object model returned is immutable. 
    NSManagedObjectModel *managedObjectModel = [[[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL] mutableCopy]; 
    RKManagedObjectStore *managedObjectStore = [[RKManagedObjectStore alloc] initWithManagedObjectModel:managedObjectModel]; 
    [managedObjectStore createPersistentStoreCoordinator]; 
    NSString *storePath = [RKApplicationDataDirectory() stringByAppendingPathComponent:@"TSI.sqlite"]; 
    NSString *seedPath = [[NSBundle mainBundle] pathForResource:@"RKSeedDatabase" ofType:@"sqlite"]; 
    //NSPersistentStore __unused *persistentStore = [managedObjectStore addInMemoryPersistentStore:&error]; 
    NSPersistentStore *persistentStore = [managedObjectStore addSQLitePersistentStoreAtPath:storePath fromSeedDatabaseAtPath:seedPath withConfiguration:nil options:nil error:&error]; 
    NSAssert(persistentStore, @"Failed to add persistent store with error: %@", error); 
    /* 
    RESTKIT 
    */ 
    // Create the managed object contexts 
    [managedObjectStore createManagedObjectContexts]; 
    managedObjectStore.managedObjectCache = [[RKInMemoryManagedObjectCache alloc] initWithManagedObjectContext:managedObjectStore.persistentStoreManagedObjectContext];

然後我映射正在TableViewController中設置按：

RKManagedObjectStore *managedObjectStore = [RKManagedObjectStore defaultStore]; 
    NSManagedObjectContext* context = [managedObjectStore mainQueueManagedObjectContext]; 

    NSString *rootKeyPath; 
    rootKeyPath = @"body"; 
    NSString *endpoint = @"account/login.json"; 
    RKEntityMapping *entityMapping = [RKEntityMapping mappingForEntityForName:@"User" inManagedObjectStore:managedObjectStore]; 
    [entityMapping addAttributeMappingsFromDictionary:@{ 
    @"api_token":@"token", 
    @"email": @"email", 
    @"first_name": @"name", 
    @"last_name": @"surname" 
    }]; 
    RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:entityMapping pathPattern:endpoint keyPath:rootKeyPath statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; 
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[TSI_SERVER stringByAppendingString:endpoint]]]; 
    RKManagedObjectRequestOperation *managedObjectRequestOperation = [[RKManagedObjectRequestOperation alloc] initWithRequest:request responseDescriptors:@[ responseDescriptor ]]; 
    //managedObjectRequestOperation.managedObjectContext = self.managedObjectContext; 
    [[NSOperationQueue currentQueue] addOperation:managedObjectRequestOperation];

但每當我試着檢索數據在視圖加載後，我在控制檯中出現以下錯誤（出於安全原因，我已屏蔽了我的應用使用的名稱和服務器）：

2013-04-16 14:41:50.576 <<MyApp>>[4525:907] I restkit:RKLog.m:34 RestKit logging initialized... 
2013-04-16 14:41:51.009 <<MyApp>>[4525:907] [HEATMA.PS] Running Heatma.ps version 4.0.2. For help go to www.heatma.ps/support 
2013-04-16 14:42:54.464 <<MyApp>>[4525:3907] *** Assertion failure in 
-[RKManagedObjectResponseMapperOperation performMappingWithObject:error:], /Users/manuel_matute/Code/RestKit/Code/Network/RKResponseMapperOperation.m:358 
2013-04-16 14:42:59.876 <<MyApp>>[4525:3907] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Unable to perform mapping: No `managedObjectContext` assigned. (Mapping response.URL = http://www.<<myserver>>.com/rest/account/login.json)' 
*** First throw call stack: (0x32a7b2a3 0x3a7a397f 0x32a7b15d 0x33350ab7 0xe37e1 0xe1b97 0x333085c1 0x33380be3 0x3abbb11f 0x3abbf961 0x3abbfac1 0x3abefa11 0x3abef8a4) libc++abi.dylib: terminate called throwing an exception

有沒有人有關於可能是什麼問題的想法？

謝謝！

來源

2013-04-16 Manu ' Jimbo' Matute

解決！

看起來我需要上下文明確地分配給managedObjectRequestOperation爲：

managedObjectRequestOperation.managedObjectContext = context;

來源

2013-04-17 09:58:40

使用RestKit的核心數據初始化0.20

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