查詢解析containsString不敏感

Question

我不知道是否有人能夠提供幫助。我正在嘗試使用SearchBar在Parse類中搜索一個術語。然而，containsString區分大小寫，我希望它不區分大小寫。請參閱下面的代碼;

-(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]; 
} 

任何幫助將不勝感激。

Answer 1

改爲使用正則表達式(?i)！歸功於https://stackoverflow.com/a/9655203/2398886，https://stackoverflow.com/a/9655186/2398886和http://www.regular-expressions.info/modifiers.html

所以更換

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

與

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

，或者您也可以使用

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

你的最終代碼應該是：

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