RestKit映射与NSDictionary和NSArray对象

Question

{"coord":{"lon":72.62,"lat":23.03},"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10n"}],"base":"stations","main":{"temp":303.082,"pressure":1014.85,"humidity":66,"temp_min":303.082,"temp_max":303.082,"sea_level":1018.46,"grnd_level":1014.85},"wind":{"speed":1.07,"deg":340.501},"rain":{"3h":0.435},"clouds":{"all":76},"dt":1475333911,"sys":{"message":0.0033,"country":"IN","sunrise":1475283682,"sunset":1475326567},"id":1279233,"name":"Ahmadabad","cod":200} 

以上是我的API响应。

现在我想映射“天气”和“名称”，并希望同一个对象作为响应。

我可以创建类

@interface WeatherStatus : NSObject 
@property (nonatomic, copy) NSString *name; 
@property (nonatomic, strong) WeatherInfo *info; 
@end 

和

@interface WeatherInfo : NSObject 
@property (nonatomic, copy) NSString *description; 
@property (nonatomic, copy) NSString *icon; 

下面是映射代码。

RKObjectMapping *weatherInfo = [RKObjectMapping mappingForClass:[WeatherInfo class]]; 
[weatherInfo addAttributeMappingsFromDictionary:@{@"description": @"description", @"icon": @"icon"}]; 

RKObjectMapping *weatherStatus = [RKObjectMapping mappingForClass:[WeatherStatus class]]; 

[weatherStatus addAttributeMappingsFromArray:@[@"name"]]; 
[weatherStatus addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"weather" toKeyPath:@"weather" withMapping:weatherInfo]]; 

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:weatherStatus method:RKRequestMethodGET pathPattern:nil keyPath:@"weather" statusCodes:nil]; 

    [objectManager addResponseDescriptor:responseDescriptor]; 

    NSDictionary *queryParams; 
    queryParams = [NSDictionary dictionaryWithObjectsAndKeys:kAPP_KEY, @"appid", @"Ahmedabad", @"q", nil]; 
    [[RKObjectManager sharedManager] getObjectsAtPath:@"/data/2.5/weather" parameters:queryParams success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) { 
     WeatherStatus *obj = [mappingResult.array objectAtIndex:0]; 
     NSLog(@"info %@",obj.info); 
     NSLog(@"name %@",obj.name); 
    } failure:^(RKObjectRequestOperation *operation, NSError *error) { 
     NSLog(@"What do you mean by 'there is no coffee?': %@", error); 
    }]; 

我越来越

info (null) 
name (null) 

任何人都可以让我知道是错？

我已经看到RestKit complex and simple JSON RKObjectMapping almost working, but

Answer 1

我将“WeatherStatus”类中info对象的属性更改为NSArray。

@property (nonatomic, copy) NSString *name; 
@property (nonatomic, strong) NSArray *weather; 

这里是对映射代码的修改。

RKObjectMapping *venueMapping = [RKObjectMapping mappingForClass:[WeatherStatus class]]; 
[venueMapping addAttributeMappingsFromDictionary:@{@"name": @"name"}]; 

RKObjectMapping *locationMapping = [RKObjectMapping mappingForClass:[WeatherInfo class]]; 
[locationMapping addAttributeMappingsFromDictionary:@{@"description": @"description",@"icon":@"icon"}]; 

[venueMapping addRelationshipMappingWithSourceKeyPath:@"weather" mapping:locationMapping]; 

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:venueMapping method:RKRequestMethodGET pathPattern:nil keyPath:nil statusCodes:nil]; 

[objectManager addResponseDescriptor:responseDescriptor]; 

添加与WeatherStatus类的关系映射。

贷记https://stackoverflow.com/users/1988185/wain

Answer 2

不要使用description作为属性名称，它只会导致你的问题。使用overview或类似的东西。

在JSON中，天气是一个数组，因此您应该使天气（info）属性为NSArray，并确保映射中的名称和属性匹配。