RestKit删除孤立的对象规则

Question

是否可以设置像全局规则为 RKbjectManager删除成功映射上的孤立对象。

我目前使用RKPathMatcher删除特定路径模式的孤儿，但它看起来像我缺少的东西。

Answer 1

阅读RKManagedObjectRequestOperation中的“获取请求块”，它们是预配置的NSFetchRequests，以便从本地存储返回给定类型的所有对象，以便RestKit可以找到不再位于服务器响应中的孤立对象。

他们的榜样块只检查机场候机楼：

RKObjectManager *manager = [RKObjectManager managerWithBaseURL:@"http://restkit.org"]; 
[manager addFetchRequestBlock:^NSFetchRequest *(NSURL *URL) { 
    RKPathMatcher *pathMatcher = [RKPathMatcher pathMatcherWithPattern:@"/airports/:airport_id/terminals.json"]; 

    NSDictionary *argsDict = nil; 
    BOOL match = [pathMatcher matchesPath:[URL relativePath] tokenizeQueryStrings:NO parsedArguments:&argsDict]; 
    NSString *airportID; 
    if (match) { 
     airportID = [argsDict objectForKey:@"airport_id"]; 
     NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Terminal"]; 
     fetchRequest.predicate = [NSPredicate predicateWithFormat:@"airportID = %@", @([airportID integerValue])]; // NOTE: Coerced from string to number 
     fetchRequest.sortDescriptors = @[ [NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES] ]; 
     return fetchRequest; 
    } 

    return nil; 
}]; 

，但你可以设置一个PathMatcher匹配任何模式，如果你的网址都比较一般：

RKPathMatcher *entityMatcher = [RKPathMatcher pathMatcherWithPattern:@"/tables/:entityName"]; 

BOOL entityMatch = (pathAndQueryString != nil) && [entityMatcher matchesPath:pathAndQueryString tokenizeQueryStrings:YES parsedArguments:&argsDict]; 
if (entityMatch) { 
    NSString *entityName = argsDict[@"entityName"]; 

    NSFetchRequest *fetchRequest; 
    if (entityName) { 
    fetchRequest = [NSFetchRequest fetchRequestWithEntityName:entityName]; 
    fetchRequest.includesSubentities = NO; 
    } 

    return fetchRequest; 
} 

然后你只需要一个获取请求块以匹配您的任何实体。