管理對象

Question

我工作的一個應用程序與核心數據，Restkit並有一個簡單的管理對象，如下的訪問的NSString財產 -

@interface MyManagedObject : NSManagedObject 
@property (nonatomic, strong) NSString *timeZone; 
@end 

我的問題是，當我嘗試訪問myManagedObj.timeZone ，我得到的值是 -

US/Pacific ({ 
    HTTP =  { 
     request =   { 
      URL = "https://myapp.com/getTimeZone"; 
      headers =    { 
       Accept = "application/json"; 
       "Accept-Language" = "en;q=1, fr;q=0.9, de;q=0.8, zh-Hans;q=0.7, zh-Hant;q=0.6, ja;q=0.5"; 
       "Content-Type" = "application/json; charset=utf-8"; 
       "User-Agent" = "MyApp/204 (iPhone Simulator; iOS 7.0.3; Scale/2.00)"; 
      }; 
      method = POST; 
     }; 
     response =   { 
      URL = "https://myapp.com/getTimeZone"; 
      headers =    { 
       "Access-Control-Allow-Origin" = "*"; 
       "Alternate-Protocol" = "443:quic"; 
       "Cache-Control" = "no-cache"; 
       "Content-Type" = "application/json"; 
       Date = "Fri, 04 Apr 2014 19:11:09 GMT"; 
       Expires = "Fri, 04 Apr 2014 19:11:09 GMT"; 
       Vary = "Accept-Encoding"; 
      }; 
     }; 
    }; 
    mapping =  { 
     collectionIndex = 2955515963; 
     rootKeyPath = "data.user_profile"; 
    }; 
}) 

我期待的值就是「美國/太平洋」，不知道爲什麼HTTP請求/響應追加到它。如果我終止應用程序並重新啓動它，我只會得到'美國/太平洋'。不知道爲什麼？

感謝您的任何幫助。

的代碼來設置時區是 -

NSURLRequest *request = [[RKObjectManager sharedManager] requestWithObject:self method:RKRequestMethodPOST path:[NSString stringWithFormat:@"/getTimeZone/%@", loginTypeString] parameters:params]; 
[self prioritizedRequestOperationWithRequest:request 
          queuePriority:NSOperationQueuePriorityVeryHigh 
          threadPriority:1 
           targetObject:self 
            success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) { 
             myManagedObject = (MyManagedObject *)[mappingResult firstObject]; 
            } 
            failure:^(RKObjectRequestOperation *operation, NSError *error, UCNetworkRequestError *ucError) { 
            } 
         useManagedRequest:YES]; 

下面是MyManagedObject響應映射 -

+ (RKObjectMapping *)responseMapping { 
    RKEntityMapping *entityMapping = [RKEntityMapping mappingForEntityForName:@"MyManagedObject" inManagedObjectStore:[RKObjectManager sharedManager].managedObjectStore]; 
    [entityMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"timeZone"]]; // array of strings 
    return entityMapping; 
} 

Answer 1

您所看到的日誌是從RestKit映射時使用代理對象。它實際上並沒有保存到商店中，它只是在映射過程中使用。您不必擔心，因爲您發送給代理的任何消息都將轉發到真實的基礎項目（本例中爲純字符串） - 除了描述之外，因此您會看到詳細的輸出。

當您終止應用程序時，您正在從數據存儲中重新獲取該項目，以便獲取真正的基礎數據，然後減去代理。