我有一个映射嵌套数组的问题.在
https://github.com/RestKit/RestKit/blob/master/Docs/Object%20Mapping.md上有一个映射嵌套对象的示例.
但是我必须做什么,如果嵌套对象是一个对象数组,例如JSON看起来像：
{ "articles": [
{ "title": "RestKit Object Mapping Intro","body": "This article details how to use RestKit object mapping...","author": [{
"name": "Blake Watters","email": "blake@restkit.org"
},{
"name": "abc","email": "emailaddress"
}]
"publication_date": "7/4/2011"
}]
}
为了获得一系列作者,我的课程应该如何？
这是示例中的代码：
@interface Author : NSObject
@property (nonatomic,retain) NSString* name;
@property (nonatomic,retain) NSString* email;
@end
@interface Article : NSObject
@property (nonatomic,retain) NSString* title;
@property (nonatomic,retain) NSString* body;
@property (nonatomic,retain) Author* author; // should be an array of Author-Objects
@property (nonatomic,retain) NSDate* publicationDate;
@end
我如何告诉Restkit,这是一个作者数组,如果我将作者属性的类更改为NSArray,那么Restkit如何知道,在这个NSArray中应该是Author-Objects … ??
我使用RKObjectMapping将对象从JSON映射到Objective-c,反之亦然.
解决方法
您需要确保相应地设置var类型：
@interface Article : NSObject
@property (nonatomic,retain) NSSet* authors;
@property (nonatomic,retain) NSDate* publicationDate;
@end
它可能会将其声明为NSArray,但我个人将RestKit与CoreData模型一起使用,这些场景中的关系是NSSet.
此外,您需要设置映射：
[articleMapping mapKeyPath:@"author" toRelationship:@"authors" withMapping:authorMapping];
