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私はここで何かおかしなことをしていますか?

カテゴリがダウンロードされてマッピングされ、

ロギングが言っているように、製品もダウンロードおよびマッピングされます。

しかし、私の製品は各カテゴリの下に空です、thnx!

{
  "productsCategories" : [
    {
      "product" : [
        {
          "price" : 3.99,
          "title" : "Product A"
        },
        {
          "price" : 3.99,
          "title" : "ProductB "
        }
      ],
      "categoryTitle" : “a category“
    }
  ]
}




RKObjectMapping *productCategoryMapping = [RKObjectMapping mappingForClass:[ProductCategory class]];
[productCategoryMapping addAttributeMappingsFromDictionary:@{
                                                             @"categoryTitle": @"tit"
                                                             }];

RKObjectMapping* productMapping = [RKObjectMapping mappingForClass:[Product class] ];
[productMapping addAttributeMappingsFromDictionary:@{
                                                     @"title": @"tit",
                                                     @"price": @"prc"
                                                       }];
[productCategoryMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"product"
                                                                                       toKeyPath:@"product"
                                                                                     withMapping:productMapping]];


RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:productCategoryMapping method:RKRequestMethodPOST pathPattern:@"productByCategory" keyPath:@"productsCategories" statusCodes:[NSIndexSet indexSetWithIndex:200]];

NSURL *url=[NSURL URLWithString:@"http://www.example.com/REST/v2/"];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];

RKObjectManager *manager = [RKObjectManager managerWithBaseURL:url];
[manager addResponseDescriptor:responseDescriptor];

NSMutableDictionary *mutableParameters = [NSMutableDictionary dictionary];
[mutableParameters setValue:@"1" forKey:@"id"];
[manager addResponseDescriptor:[RKResponseDescriptor responseDescriptorWithMapping:productCategoryMapping method:RKRequestMethodPOST pathPattern:@"productByCategory" keyPath:@"productsCategories" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]];

[manager postObject:request path:@"productByCategory" parameters:mutableParameters success:^(RKObjectRequestOperation *operation, RKMappingResult *result){

    self.productCategoryArr=result.array;
    [self.tblDetails reloadData];

}failure:^(RKObjectRequestOperation *operation, NSError *error) {

    RKLogError(@"Operation failed with error: %@", error);
    self.productCategoryArr=nil;

}];

ロギングは、オブジェクトが各製品にマッピングされていることを示していますが、私は得るだけです

ProductCategory: 0x7bf53510
ProductCategory: 0x7be57f00

配列とそれぞれに 0 個のオブジェクト

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