I've been trying to add simple Search functionality to a TableViewController in my app. I followed Ray Wenderlich's tutorial. I have a tableView with some data, I added the search bar + display controller in storyboard, and then I have this code:

#pragma mark - Table View
     - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"BreedCell" forIndexPath:indexPath];

        //Create PetBreed Object and return corresponding breed from corresponding array
        PetBreed *petBreed = nil;

        if(tableView == self.searchDisplayController.searchResultsTableView)
            petBreed = [_filteredBreedsArray objectAtIndex:indexPath.row];
        else
            petBreed = [_breedsArray objectAtIndex:indexPath.row];

        cell.accessoryType  = UITableViewCellAccessoryDisclosureIndicator;
        cell.textLabel.text = petBreed.name;

        return cell;
    }

#pragma mark - Search
    -(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
        [_filteredBreedsArray removeAllObjects];
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.name contains[c] %@",searchString];
        _filteredBreedsArray = [[_breedsArray filteredArrayUsingPredicate:predicate] mutableCopy];

        return YES;
    }

    -(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
        // Tells the table data source to reload when scope bar selection changes

        [_filteredBreedsArray removeAllObjects];
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.name contains[c] %@",self.searchDisplayController.searchBar.text];
        _filteredBreedsArray = [[_breedsArray filteredArrayUsingPredicate:predicate] mutableCopy];
        return YES;
    }

                    
                    
                    
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