Restkit 0.22.0如何映射一个没有keyPath的简单JSON响应来发布

Question

为简单起见，Rest API发送这个JSON response-body = {“status”：“ok”}。

我建立我的Restkit映射像...创建了一个名为StatusResponse类具有一个@property (nonatomic, assign) NSString *status;

RKObjectMapping *statusResponseMapping = [RKObjectMapping mappingForClass:[StatusResponse class]]; 
    [statusResponseMapping addAttributeMappingsFromDictionary:@{@"status":@"status"}]; 

// also tried : [statusResponseMapping addAttributeMappingsFromDictionary:@[@"status"]]; which resulted in same error 

    NSIndexSet *statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful); 

RKResponseDescriptor *statusResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:statusResponseMapping method:RKRequestMethodPOST pathPattern:@"status" keyPath:nil statusCodes:statusCodes]; 

[[RKObjectManager sharedManager] addResponseDescriptor:statusResponseDescriptor]; 

I'm running a post which is successful, but I get this error back: 

NSUnderlyingError=0x17024d440 "No mappable object representations were found at the key paths searched.", keyPath=null, NSLocalizedDescription=No response descriptors match the response loaded.} 
response.body={ 
    "status": "ok" 
} 

任何帮助，将不胜感激。

Answer 1

你应该尝试keyPath到@“”和pathPattern为零，这里是我正在使用的一段代码，它对我来说完全正常工作。我正在做你完全一样的尝试。

RKResponseDescriptor *statusResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:[ResponseStatus rkObjectMappingForResponse:YES] method:RKRequestMethodAny pathPattern:nil keyPath:@"" statusCodes:statusCodes]; 

Answer 2

因为您的响应描述符有pathPattern:@"status"，所以只有在向服务器上的status路径发出请求时才会使用映射。这可能不是你想要的。您可能应该使用pathPattern:nil。