Kohana查询中的问题

Question

我在查询中遇到了一个问题。请帮我解决问题（我是Kohana Framework的新手）

$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();  

正如您所见，'hits'是在DB：expr（）中设置的属性。在我看来，我正试图访问$ posts-＆gt;点击;属性。然后出现hits属性的问题不存在。

图片附后，请帮助我不是kohana框架的专家。

Answer 1

尝试这种非ORM方法：

$query = DB::select(array(DB::Expr('COUNT(v.id_visit)'), 'hits'))
    ->from(array('oc2_visits', 'v'))
    ->join(array('oc2_post', 'p'), 'INNER')
        ->on('p.id_post', '=', 'v.id_ad')
    ->where('v.controller', '=', 'Blog')
    ->group_by('v.id_ad')
    ->order_by('v.created','desc')
    ->limit($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();