Restkit 0.22.0如何映射一個沒有keyPath的簡單JSON響應來發布

Question

爲簡單起見，Rest API發送這個JSON response-body = {「status」：「ok」}。

我建立我的Restkit映射像...創建了一個名爲StatusResponse類具有一個@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" 
} 

任何幫助，將不勝感激。

Answer 1

你應該嘗試keyPath到@「」和pathPattern爲零，這裏是我正在使用的一段代碼，它對我來說完全正常工作。我正在做你完全一樣的嘗試。

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

Answer 2

因爲您的響應描述符有pathPattern:@"status"，所以只有在向服務器上的status路徑發出請求時纔會使用映射。這可能不是你想要的。您可能應該使用pathPattern:nil。