CODEWITHSUNDEEP
core-datanspredicatecase-sensitive
Rui Lopes
Rui Lopes

Reputation: 2562

NSPredicate with localizedCaseInsensitiveCompare

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,

RL

Upvotes: 0

Views: 476

Answers (2)

Dave DeLong
Dave DeLong

Reputation: 243146

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

Upvotes: 1

Brent Priddy
Brent Priddy

Reputation: 3847

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

Upvotes: 1

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