NSPredicate case-insensitive matching on to-many relationship

Question

I am implementing a search field where the user can type in a string to filter the items displayed in a view. Each object being displayed has a keywords to-man

Answer 1

I believe the answer is:

[NSPredicate predicateWithFormat:@"keywords.name CONTAINS[cd] %@", self.searchString];

String comparisons are by default case and diacritic sensitive. You can modify an operator using the key characters c and d within square braces to specify case and diacritic insensitivity respectively, for example firstName BEGINSWITH[cd] $FIRST_NAME.

Predicate Format String Syntax