Issue in Kohana Query - orm

Question

I'm facing an issue in my query.Kindly help me to sort the issue (I’m newbie in Kohana Framework)
$posts->select(array(DB::expr('( SELECT COUNT(id_visit) FROM `oc2_visits` WHERE `oc2_post`.`id_post` = `oc2_visits`.`id_ad` AND `oc2_visits`.controller = "Blog" GROUP BY `oc2_visits`.`id_ad`)'), 'hits'));
//we sort all ads with few parameters
$posts = $posts->order_by('created','desc')
->limit($pagination->items_per_page)
->offset($pagination->offset)
->limit(Theme::get('num_home_blog_posts', 4))->cached()
->find_all();
As you can see 'hits' is property set at DB:expr(). In my view I'm trying to access the $posts->hits; property. Then the issue appearing hits property doesn't exists.
Image is attached, Please help I'm not expert in kohana framework.

Answer 1

Try this non-ORM approach:
$query = DB::select(array(DB::Expr('COUNT(v.id_visit)'), 'hits'))
->from(array('oc2_visits', 'v'))
->join(array('oc2_post', 'p'), 'INNER')
->on('p.id_post', '=', 'v.id_ad')
->where('v.controller', '=', 'Blog')
->group_by('v.id_ad')
->order_by('v.created','desc')
->limit($pagination->items_per_page) //why 2 limit statements? Oversight?
->offset($pagination->offset)
->limit(Theme::get('num_home_blog_posts', 4));
$posts = $query->execute();
//Or if you want objects use:
$posts = $query->as_object()->execute();