我在restkit上看到一些奇怪的行为并映射对象。在我的目标对象中,如果我有一个名为"描述"的NSString *属性,则整个映射将失败。将其更改为任何其他名称或评论,一切都成功了。无论我是否设置了该属性的地图,都可以在简单的测试类中复制它。
我可以重现它。服务器正在返回的JSON:
{
id = 1;
name = item1;
},
{
id = 2;
name = item2;
}
我要映射到SimpleObject.h的对象。请注意,描述和不存在的属性都在JSON中,这意味着我不认为这是因为"描述"缺少:
#import <Foundation/Foundation.h>
@interface SimpleObject : NSObject
@property (nonatomic, assign) NSInteger identifier;
@property (nonatomic, retain) NSString *name;
@property (nonatomic, retain) NSString *description;
@property (nonatomic, retain) NSString *nonexistant;
@end
simpleObject.m:
#import "SimpleObject.h"
@implementation SimpleObject
@synthesize identifier;
@synthesize name;
@synthesize description;
@synthesize nonexistant;
@end
我在AppDelegate中创建映射:
RKObjectManager *objectManager = [RKObjectManager managerWithBaseURLString:@"http://127.0.0.1/test"];
// Setup our object mappings
RKObjectMapping *testMapping = [RKObjectMapping mappingForClass:[SimpleObject class]];
[testMapping mapKeyPath:@"id" toAttribute:@"identifier"];
[testMapping mapKeyPath:@"name" toAttribute:@"name"];
// Register our mappings with the provider using a resource path pattern
[objectManager.mappingProvider setObjectMapping:testMapping forResourcePathPattern:@"/products"];
在我的didloadobjects方法中,我有:
- (void)objectLoader:(RKObjectLoader *)objectLoader didLoadObjects:(NSArray *)objects
{
NSLog(@"Loaded products: %@", objects);
SimpleObject *obj = [objects objectAtIndex:0];
NSLog(@"Loaded product ID %d -> Name: %@ ", obj.identifier, obj.name);
}
此输出:
Finished performing object mapping. Results: {
"" = (
(null),
(null)
);
}
如果我评论描述属性(但不存在),那么一切都有效:
Finished performing object mapping. Results: {
"" = (
"<SimpleObject: 0x8a4d040>",
"<SimpleObject: 0x8a50130>"
);
}
是否存在映射仅针对此属性名称失败的原因?如果我将名称更改为"描述"以外的任何内容,它也会成功。
它与nsObject的描述属性相冲突。将其重命名为其他(例如DESC)。