NSPredicate 与 localizedCaseInsensitiveCompare

发布于 2024-12-08 13:46:23 字数 753 浏览 0 评论 0原文

我有一个带有 CoreData 的应用程序，我需要使用 NSPredicate 来检索某个城市的所有联系人。

问题是“城市”可能会写成 LONDON 或 London 甚至 london。用户将输入 London 或 LoNDon 进行搜索。

我需要的是将 NSPredicate 与 localizedCaseInsensitiveCompare 结合使用，以便检索所有记录。

代码：

    request.predicate = [NSPredicate predicateWithFormat:
                         @"activityDeleted == %@ && (SUBQUERY(hasMembers, $sub, $sub.memberDeleted == %@).@count > 0) && (SUBQUERY(hasMembers, $sub, $sub.city == %@)", 
                         [NSNumber numberWithBool:NO], 
                         [NSNumber numberWithBool:NO],
                         city];

上面的 NSPredicate 检索位于某个城市的所有具有联系人但未删除的组，但我遇到了 CaseInsensitive 问题...

我该怎么做？

谢谢，

原文

I have an App with CoreData and I need to use NSPredicate to retrieve all the contacts from a city.

The question is that "city" maybe written like LONDON or London or even london. And the user will type London to search, or LoNDon.

What I need is to use NSPredicate with localizedCaseInsensitiveCompare, so that all the records are retrieved.

Code:

    request.predicate = [NSPredicate predicateWithFormat:
                         @"activityDeleted == %@ && (SUBQUERY(hasMembers, $sub, $sub.memberDeleted == %@).@count > 0) && (SUBQUERY(hasMembers, $sub, $sub.city == %@)", 
                         [NSNumber numberWithBool:NO], 
                         [NSNumber numberWithBool:NO],
                         city];

The above NSPredicate retrieves all the groups that have Contacts, not deleted, that are in a certain City, but I have the CaseInsensitive problem...

How can I do that?

Thanks,

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

︶￣淡然 2024-12-15 13:46:23

这里不需要子查询。您的整个谓词可以是：

@"activityDeleted == NO AND ANY hasMembers.memberDeleted = NO AND ANY hasMembers.city =[cd] %@", city

You don't need subquery here. Your entire predicate can instead be:

@"activityDeleted == NO AND ANY hasMembers.memberDeleted = NO AND ANY hasMembers.city =[cd] %@", city

回复收藏 0 原文

朕就是辣么酷 2024-12-15 13:46:23

您可以在 == 上使用不区分大小写和不区分变音符号的修饰符“[cd]”

SUBQUERY(hasMembers, $sub, $sub.city ==[cd] %@)

您可以尝试在 stackoverflow 中搜索“不区分大小写的 nspredicate”，已经有几个答案 https://stackoverflow.com/search?q=case+insensitive+nspredicate

You can use the case insensitive and diacritic insensitive modifiers "[cd]" on the ==

SUBQUERY(hasMembers, $sub, $sub.city ==[cd] %@)

You might try searching stackoverflow for "case insensitive nspredicate" there are several answers already https://stackoverflow.com/search?q=case+insensitive+nspredicate

回复收藏 0 原文

~没有更多了~