查询解析containsString不敏感

Question

我不知道是否有人能够提供帮助。我正在尝试使用SearchBar在Parse类中搜索一个术语。然而，containsString区分大小写，我希望它不区分大小写。请参阅下面的代码;

-(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]; 
} 

任何帮助将不胜感激。

Answer 1

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

所以更换

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

与

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

，或者您也可以使用

[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"];