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我正在尝试使用 Restkit 对象映射发布实体（文章）及其关系（作者）的内容。

文章 <->> 作者 一篇文章可以有多个作者。

我当前的对象映射如下，

    RKObjectMapping *authorMapping = [RKObjectMapping requestMapping];
    [authorMapping addAttributeMappingsFromArray:@[@"name",@"email"]];

    RKObjectMapping *articleMapping = [RKObjectMapping requestMapping];
   [articleMapping addAttributeMappingsFromArray:@[@"title",@"body",@"date"]];

   RKRelationshipMapping * rel =[RKRelationshipMapping relationshipMappingFromKeyPath:@"author" toKeyPath:@"author" withMapping:authorMapping];
   [articleMapping addPropertyMapping:rel];

    RKObjectMapping *mapping = [RKObjectMapping requestMapping];
   [mapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"singleArticle" toKeyPath:@"singleArticle" withMapping:articleMapping]];

对于这个映射，我期待一个带有一组作者的 JSON 输出，如下所示，

  {
    "singleArticle": {
        "author": [
            {
                "email": "dadsa@",
                "name": "rk"
            },
            {
                "email": "3ldll",
                "name": "rjk"
            }
        ],
        "body": "body content",
        "date": "2014-05-16T15:54:40Z",
        "title": "some title"
    }
}

但是生成的 JSON 输出结果将作者类中的所有字段作为一个单独的对象，如下所示，

{
    "singleArticle": {
        "author": [
            {
                "email": "dadsa@"
            },
            {
                "name": "rk"
            },
            {
                "email": "3ldll"
            },
            {
                "name": "rjk"
            }
        ],
        "body": "body content",
        "date": "2014-05-16T15:54:40Z",
        "title": "some title"
    }
}

我不确定我在这里遗漏了什么会弄乱上面的 JSON 提要。有什么想法可以使用一组作者对象生成正确的 JSON 吗？

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