AFIncrementalStore和访问API URL，例如http://apiurl.com/users/1/posts

Question

我查看了AFIncreementalStore的gitHub页面中包含的示例，并认为我理解从http://apiurl.com/users这样的URL请求来自远程api的对象的过程。基本上我会在UsersListViewController中执行此操作：

    NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"User"];
    fetchRequest.sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"userID" ascending:YES]];
    fetchRequest.returnsObjectsAsFaults = NO;

    _fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:[(id)[[UIApplication sharedApplication] delegate] managedObjectContext] sectionNameKeyPath:nil cacheName:nil];
    _fetchedResultsController.delegate = self;
    [_fetchedResultsController performFetch:nil];

我很难弄清楚如何从http://apiurl.com/users/1/posts这样的网址中获取类似“帖子”的内容。

我最初的想法是我在获取请求中添加一个谓词：

    NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Post"];
    fetchRequest.sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"createdAt" ascending:YES]];
    fetchRequest.returnsObjectsAsFaults = NO;
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"userID == %@", userID];        
    [request setPredicate:predicate];

    _fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:[(id)[[UIApplication sharedApplication] delegate] managedObjectContext] sectionNameKeyPath:nil cacheName:nil];
    _fetchedResultsController.delegate = self;
    [_fetchedResultsController performFetch:nil];

添加此谓词是否会使用此URL生成GET请求（假设我在谓词中使用的用户ID为1）？ http://apiurl.com/users/1/posts