How to join two strings for NSPredicate, ie firstname and lastname

Question

I have a Person Object which has two NSString properties; firstName and lastName. I\'m currently using an NSPredicate like so

Answer 1

Try this,

NSString *text = @"John Smi";
NSString *searchText = [text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

NSArray *array = [searchText componentsSeparatedByString:@" "];
NSString *firstName = searchText;
NSString *lastName = searchText;
NSPredicate *predicate = nil;

if ([array count] > 1) {
    firstName = array[0];
    lastName = array[1];
    predicate = [NSPredicate predicateWithFormat:@"(firstName CONTAINS[cd] %@ AND lastName CONTAINS[cd] %@) OR (firstName CONTAINS[cd] %@ AND lastName CONTAINS[cd] %@)", firstName, lastName, lastName, firstName];
} else {
    predicate = [NSPredicate predicateWithFormat:@"firstName CONTAINS[cd] %@ OR lastName CONTAINS[cd] %@", firstName, lastName];
}

NSArray *filteredArray = [people filteredArrayUsingPredicate:predicate];
NSLog(@"%@", filteredArray);

Output:

(
        {
        firstName = John;
        lastName = Smith;
    }
)

Here text represents the searched text. The advantage with the above is, even if you pass text = @"Smi Joh"; or text = @"John "; or text = @" smi"; or text = @"joh smi ";, it will still show the above output.