在搜索显示控制器中分组

发布于 2024-12-20 01:54:22 字数 410 浏览 2 评论 0原文

在我的核心数据应用程序中，我有一个实体 Person，其名称作为属性。我使用以下谓词逻辑来搜索名称。当我们用单词搜索时它会显示名称。好吧，但我想要两组搜索名称作为

包含名称中任何位置的单词
名称以单词开头。

两个组我都想要。如何？

NSString *searchfilter = [NSString stringWithFormat:@"*%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

原文

In my Core Data app, I have an entity Person with names as attribute.
I used following predicate logic to search the names.
It displays names when we search with a word.
well but I want two groups of searched names as

Word containing anywhere in the name
Name starts withe the word.

both groups I want. How?

NSString *searchfilter = [NSString stringWithFormat:@"*%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

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。

笑脸一如从前 2024-12-27 01:54:22

你的例子应该适用于#1。

单词位于名称中的任何位置：

NSString *searchfilter = [NSString stringWithFormat:@"*%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

名称以单词开头：

NSString *searchfilter = [NSString stringWithFormat:@"%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

Your example should work for #1.

word is anywhere anywhere in the name:

NSString *searchfilter = [NSString stringWithFormat:@"*%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

name starts with the word:

NSString *searchfilter = [NSString stringWithFormat:@"%@*",savedSearchTerm_];
NSPredicate *filter = [NSPredicate predicateWithFormat:@"word like[c] %@", searchfilter];
[fetchRequest setPredicate:filter];

回复收藏 0 原文

梨涡 2024-12-27 01:54:22

我认为你这里有 2 个选择：

1) - (id)initWithFetchRequest:(NSFetchRequest *)fetchRequest ManagedObjectContext:(NSManagedObjectContext *)contextsectionNameKeyPath:(NSString *)sectionNameKeyPath cacheName:(NSString *)name pass sectionNameKeyPath: 按您想要分组的内容

2) 选择 - (NSArray *）executeFetchRequest：（NSFetchRequest *）请求错误：（NSError **）错误

回复收藏 0 原文

~没有更多了~