ios - Query Parse containsString 使不敏感

Question

我想知道是否有人能够提供帮助。我正在尝试使用 SearchBar 在 Parse 类中搜索术语。 containsString 但是区分大小写，我希望它不区分大小写。请看下面的代码；

-(void)filterResults:(NSString *)searchTerm {

[self.searchResults removeAllObjects];
PFQuery *query = [PFQuery queryWithClassName: @"Firefacts"];
[query whereKeyExists:@"Number"];
[query whereKey:@"Number" containsString:searchTerm];
NSArray *results = [query findObjects];
[self.searchResults addObjectsFromArray:results];
}

如有任何帮助，我们将不胜感激。

Answer 1

改用正则表达式 (?i) !归功于https://stackoverflow.com/a/9655203/2398886 , https://stackoverflow.com/a/9655186/2398886和 http://www.regular-expressions.info/modifiers.html

所以替换

[query whereKey:@"Number" containsString:searchTerm];

与

[query whereKey:@"Number" matchesRegex:[NSString stringWithFormat:@"(?i)%@",searchTerm]];

或者你也可以使用

[query whereKey:@"Number" matchesRegex:searchTerm modifiers:@"i"];

你的最终代码应该是:

PFQuery *query = [PFQuery queryWithClassName: @"Firefacts"];
[query whereKeyExists:@"Number"];
[query whereKey:@"Number" matchesRegex:searchTerm modifiers:@"i"];