ios - Quickblox iOS - 请求对象，按 'Created At' 排序

Question

当使用 QuickBlox iOS 框架检索自定义对象时，有没有办法让结果按“创建时间”字段从最新到最旧排序？

NSMutableDictionary *getRequestFavs = [NSMutableDictionary dictionary];

[getRequest setObject:[NSString stringWithFormat:@"%lu", (unsigned long)currentUser.ID] forKey:@"favoriteID"];
// not sure what to do here...
[getRequest setObject:@"???" forKey:@"sort_desc"];

[QBRequest objectsWithClassName:@"Favorites" extendedRequest:getRequest successBlock:^(QBResponse *response, NSArray *objects, QBResponsePage *page) {       
} errorBlock:^(QBResponse *response) {
}];

Answer 1

对于遇到此问题的任何人，我设法通过使用对象的 ID 字段进行排序来解决此问题。它已编入索引并且比 created_at 字段快得多。

[getRequest setObject:@"_id" forKey:@"sort_desc"];