RestKit で POST リクエストを作成しようとしていますが、RKObjectManager の postObject メソッドを呼び出すと、次のエラーが発生します。
Can only use -performBlockAndWait: on an NSManagedObjectContext that was created with a queue.
このエラーは、メソッドperformBlockAndWaitがRKManagedObjectRequestOperationクラスによって呼び出されたときに発生しました。
これが私のコードです:
RKObjectMapping *responseMapping = [RKObjectMapping requestMapping];
[responseMapping addAttributeMappingsFromDictionary:@{
// ...
}];
NSIndexSet *statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful); // Anything in 2xx
NSString *pathPattern = @"myPath";
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodPOST pathPattern:pathPattern keyPath:nil statusCodes:statusCodes];
RKObjectMapping *requestMapping = [RKObjectMapping requestMapping];
[requestMapping addAttributeMappingsFromDictionary:@{
// ...
}];
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[MyClass class] rootKeyPath:@"" method:RKRequestMethodPOST];
NSURL *baseURL = [NSURL URLWithString:@"http://192.168.1.1:8080"];
RKObjectManager *manager = [RKObjectManager managerWithBaseURL:baseURL];
[manager addRequestDescriptor:requestDescriptor];
[manager addResponseDescriptor:responseDescriptor];
NSManagedObjectModel *managedObjectModel = [NSManagedObjectModel mergedModelFromBundles:nil];
RKManagedObjectStore *managedObjectStore = [[RKManagedObjectStore alloc] initWithManagedObjectModel:managedObjectModel];
manager.managedObjectStore = managedObjectStore;
[managedObjectStore createPersistentStoreCoordinator];
NSString *storePath = [RKApplicationDataDirectory() stringByAppendingPathComponent:@"mySqliteDatabaseFile"];
NSError *error;
NSPersistentStore *persistentStore = [managedObjectStore addSQLitePersistentStoreAtPath:storePath fromSeedDatabaseAtPath:nil withConfiguration:nil options:nil error:&error];
NSAssert(persistentStore, @"Failed to add persistent store with error: %@", error);
[managedObjectStore createManagedObjectContexts];
managedObjectStore.managedObjectCache = [[RKInMemoryManagedObjectCache alloc] initWithManagedObjectContext:managedObjectStore.persistentStoreManagedObjectContext];
// POST to create
@try {
[manager postObject:visitReport path:@"myPath" parameters:nil success:^( RKObjectRequestOperation *operation , RKMappingResult *mappingResult ) {
NSLog(@"Success");
} failure:^( RKObjectRequestOperation *operation , NSError *error ){
NSLog(@"Failure - %@",error);
}];
}
@catch (NSException *exception) {
NSLog(@"error - %@", exception);
}
私のコンテキストの問題がわかりません。どんな助けも歓迎します。ありがとうございました。