的iOS RestKit - 测绘成果，只有一个属性

Question

这是API我的回应：

{"is_favorited":1} 

我想RestKit映射，但我不能让它工作。这我在AppDelegate.m：

RKObjectMapping *isFavoriteMapping = [RKObjectMapping mappingForClass:[IsFavorite class]]; 
[isFavoriteMapping addAttributeMappingsFromDictionary:@{ 
                 @"is_favorited" : @"Is_favorited", 
                 }]; 

RKResponseDescriptor *isFavoriteResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:isFavoriteMapping 
                            method:RKRequestMethodAny 
                          pathPattern:@"/api/isPointFavorited/:sid" 
                           keyPath:nil 
                          statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; 

[manager addResponseDescriptor:isFavoriteResponseDescriptor]; 

路径是好的。我有地址令牌。我打电话通过：

RKObjectManager *manager = [RKObjectManager sharedManager]; 
    [manager getObjectsAtPath: [NSString stringWithFormat:@"/api/isPointFavorited/%@", sid] 
        parameters:@{ 
           @"pid":[NSString stringWithFormat:@"%@", actualPlace.Id] 
           } 
         success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) 
    { 
     ... 
     } 
      failure:^(RKObjectRequestOperation *operation, NSError *error) 
       { 
       ... 
       }]; 

我在应用程序和sid（登录令牌）中多次使用RestKit。所以地址或方法调用没有问题。问题必须在绘图中，但我不知道如何去做。我试图将keyPath从零修改为@“is_favorited”，但它没有帮助。

我Is_favorite.h：

@interface IsFavorite : NSObject 

@property(nonatomic) NSNumber *Is_favorited; 

@end 

RestKit错误：

Error Domain=org.restkit.RestKit.ErrorDomain Code=1001 "No mappable object representations were found at the key paths searched." UserInfo=0x1849cbc0 {DetailedErrors=(
), NSLocalizedFailureReason=The mapping operation was unable to find any nested object representations at the key paths searched: events, results 
The representation inputted to the mapper was found to contain nested object representations at the following key paths: is_favorited 
This likely indicates that you have misconfigured the key paths for your mappings., NSLocalizedDescription=No mappable object representations were found at the key paths searched., keyPath=null} 

编辑 - 改变的AppDelegate，但仍无法正常工作：

RKObjectMapping *isFavoriteMapping = [RKObjectMapping mappingForClass:[IsFavorite class]]; 
[isFavoriteMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"Is_favorited"]]; 

RKResponseDescriptor *isFavoriteResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:isFavoriteMapping 
                            method:RKRequestMethodAny 
                          pathPattern:@"/api/isPointFavorited/:sid" 
                           keyPath:@"is_favorited" 
                          statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; 

[manager addResponseDescriptor:isFavoriteResponseDescriptor]; 

Answer 1

删除您的addAttributeMappingsFromDictionary:使用，并更改为：

[isFavoriteMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"Is_favorited"]]; 

然后将响应描述符上的keyPath更改为@"is_favorited"。

这被称为无关键路径映射（因为映射中无源关键字路径）。