NSPredicate contains string lowercase

Question

I'm developing an iOS application with iOS SDK 6.0 and XCode 4.5.2. My target development is 4.3.

I'm using Core Data to manage my data. Now I have this NSPredicate to search shops:

if ((shopSearchBar.text != nil) && ([shopSearchBar.text length] > 0))
{
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name = %@",shopSearchBar.text];
    [fetchRequest setPredicate:predicate];
}

This is Shop entity:

I have to convert name to lowercase and see if it contains shopSearchBar.text in lowercase format.

Example:

I have these four shops:

• Shop1
• shop 1
• my shop
• Shop

If user search text is 'shop', it must returns all of them.

Do you know how to do that?

Answer 1

This is how I've solved my problem:

if ((shopSearchBar.text != nil) && ([shopSearchBar.text length] > 0))
{
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name CONTAINS[cd] %@",
                              shopSearchBar.text];
    [fetchRequest setPredicate:predicate];
}