ios – 使用没有映射到POST对象的RestKit处理POST响应

我有一个情况,我正在做一个对象的发布(不是一个管理的,只是一个NSObject派生的),但REST API的响应不是要发布的对象的 JSON表示形式.这还有别的东西.是否可以处理这个？

说我发布一个对象(JSON)：

{
  "prop1" : 123,"prop2" : 5
}

而且如果不是具有属性prop1和prop2的对象(如RestKit预期的那样),而是其他的东西：

{
  "data" : [1,2,3,4,5,6],"message" : "hello world"
}

我已经看到一些例子,其中将operation.targetobject设置为nil,但(我相信)这只是在Core Data管理的场景中.

我正在尝试像这样简单的东西：

RKObjectRequestOperation *operation = [self.objectManager appropriateObjectRequestOperationWithObject:body method:RKRequestMethodPOST path:@"items" parameters:nil];

[operation setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation,RKMappingResult *result) {
   // success is called,but the result does not contain what the response JSON is
} failure:^(RKObjectRequestOperation *operation,NSError *error) {
  // failure
}];

[operation setwillMapDeserializedResponseBlock:^id(id deserializedResponseBody) {
    // deserializedResponseBody is always nil
}];

[operation start];

我以为我可以看看setwillMapDeserializedResponseBlock中的响应内容,但总是为零.

因为发布的对象具有prop1和prop2属性,以及RestKit默认情况下的工作原理,它期望具有所述属性的JSON.但是,由于结果与发布的对象无关,所以prop1和prop2只是零(我不在乎).

顺便说一下,我已经正确地设置了请求映射,所以在操作对象中传递的正文正确映射我的NSObject并以正确的JSON格式发送给服务器.

有没有办法,我可以用RestKit打电话,手动拔出我正在寻找的成功事件？即使它是JSON响应的字典表示法？

解决方法

我只是为您的回应创建一个新对象,并将您的回复映射到该对象.

对象

@interface MYRequest : NSObject

@property NSNumber *prop1;
@property NSNumber *prop2;

@end

@interface MYResponse : NSObject

@property NSArray *data;
@property Nsstring *message;

@end

映射

RKObjectMapping *requestMapping = [RKObjectMapping requestMapping];
[requestMapping addAttributeMappingsFromArray:@[@"prop1",@"prop2"]];

RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[MYResponse class]];
[requestMapping addAttributeMappingsFromArray:@[@"data",@"message"]];

叙

RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping
                                                                               objectClass:[MYRequest class]
                                                                               rootKeyPath:nil
                                                                                    method:RKRequestMethodPOST];

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
                                                                                        method:RKRequestMethodPOST
                                                                                   pathPattern:@"items"
                                                                                       keyPath:nil
                                                                                   statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

对象管理器

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

执行

MYRequest *body = [MYRequest new];
[body setProp1:@123];
[body setProp2:@5];

[self.objectManager postObject:body
                          path:@"items"
                    parameters:nil
                       success:^(RKObjectRequestOperation *operation,RKMappingResult *mappingResult) {
                           MYResponse *result = [mappingResult firstObject];
                           NSLog(@"Data: %@\nMessage: %@",[result data],[result message]);
                       }
                       failure:^(RKObjectRequestOperation *operation,NSError *error) {
                           NSLog(@"Error: %@",error);
                       }];