RestKit - 对象映射功能无法找到

Question

我天真地想跟着guidelines与RestKit 0.20

#import <RestKit/RestKit.h> 
... 
RKObjectMapping *mymap = 
    [RKObjectMapping mappingForClass: NSClassFromString(@"MY_CLASS")]; 
[mymap mapAttributes:@"field1", @"field2", nil]; 

但

为“RKObjectMapping无可见@interface映射我CoreData类之一'声明选择器'mapAttribute'

如果我输入[mymap map，我只能看到这两个函数在co mpletion list

id mappingForDestinationKeyPath:(NSString *) 
id mappingForSourceKeyPath:(NSString *) 

我在做什么错？

---

的另一个例子，当我尝试使用共享RKObjectManager

[[RKObjectManager sharedManager].mappingProvider setMapping:map forKeyPath:@"/"]; 

它找不到成员mappingProvider

Answer 1

我认为这是与Wiki页面，​​问题在RKObjectMapping文档中找不到（http://restkit.org/api/master/Classes/RKObjectMapping.html）。我认为维基页面已经过时了，用这个来代替：https://github.com/RestKit/RestKit/wiki/Object-Mapping

您应该使用addAttributeMappingsFromDictionary方法代替：

[mymapp addAttributeMappingsFromDictionary:@{@"field1" : @"field1"}]; 

而且mappingProvider是从前期0.20休息套件，并且已被替换响应描述符（物体，其被用于确定一种用于响应使用的映射）

RKResponseDescriptor *descriptor = [RKResponseDescriptor responseDescriptorWithMapping:mapping pathPattern:nil keyPath:@"key_path" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; 

[[RKObjectManager sharedManager] addResponseDescriptor:descriptor]; 

Answer 2

使用映射是这样的：

RKManagedObjectMapping * mymap = [RKManagedObjectMapping mappingForClass:[MY_CLASS class] inManagedObjectStore:self.objectStore]; 

    mymap.setDefaultValueForMissingAttributes = YES; 
    mymap.primaryKeyAttribute = @"MY_CLASS_ID"; 
    mymap.rootKeyPath = @"ROOT_PATH_OF_SERVICE"; 
    [mymap mapKeyPathsToAttributes: 
    @"WEB_SERVICE_ATTRIBUTE1", @"DATA_MODAL_ATTRIBUTE1", 
    @"WEB_SERVICE_ATTRIBUTE2", @"DATA_MODAL_ATTRIBUTE2", 
    @"WEB_SERVICE_ATTRIBUTE3", @"DATA_MODAL_ATTRIBUTE3", 
    nil];