my $sort_key = $query->param('sortCol')   || 
                   $session->param('sortCol') || 
                   'location';

    $bases_rs = $schema->resultset('Bases')->search(
        {
            profile_id => $profile->id,
        },
        {
            join          => {
                'astro'   => 'astrotype',
                'astro'   => 'terrain',
            },
            prefetch      => {
                'astro'   => 'astrotype',
                'astro'   => 'terrain',
            },
            order_by      => _sort_column($sort_key),
        } ,
    );