用于PUT方法的Ids的数组RestKit映射

Question

我坚持如何构建我的对象和映射以通过PUT-Method放入数据时实现类似的事情：“lastChanges / confirm”

上述PUT-Request接受这样的正文以确认box id的同步：

{ "synchronized_boxes": [47292,someOtherBoxId,..] }

我尝试构建这样的对象：

@interface RPConfirmSync : NSObject
@property (nonatomic, retain) NSArray *synchronized_boxes;
@end

在发送此对象之前，我将一些NSNumber对象添加到数组中。

我设置的映射如下所示：

RKObjectMapping *confirmMapping = [RKObjectMapping mappingForClass:[RPConfirmSync class]];
[confirmMapping addAttributeMappingsFromArray:@[@"synchronized_boxes"]];

RKObjectMapping *requestMapping = [confirmMapping inverseMapping];

NSString *pathPattern = [NSString stringWithFormat:@"lastsync/confirm"];

RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[RPConfirmSync class] rootKeyPath:nil];

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:confirmMapping pathPattern:pathPattern keyPath:nil statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

[self.objectManager addRequestDescriptor:requestDescriptor];
[self.objectManager addResponseDescriptor:responseDescriptor];

现在，当我执行上面的PUT-Request并查看请求体时，RestKit Debug信息向我展示了一些奇怪的东西：

request.body=synchronized_boxes[]=47292 //being sent to the server !ERROR!

应该是

request.body=synchronized_boxes[47292]

如何设置我的对象或映射是否有问题？我真的被困在这里，虽然我猜答案是直截了当的。