Admin_articles::upload_delete PHP Метод

    public function upload_delete($id = '')
    {
        $this->load->helper('file');
        if (!is_numeric($id)) {
            redirect('admin/kb/articles/');
        }
        $id = (int) $id;
        $this->db->select('attach_id, article_id, attach_file')->from('attachments')->where('attach_id', $id);
        $query = $this->db->get();
        if ($query->num_rows() > 0) {
            $row = $query->row();
            $article_id = $row->article_id;
            unlink(ROOTPATH . 'uploads/' . $row->article_id . '/' . $row->attach_file);
            $this->db->delete('attachments', array('attach_id' => $id));
            redirect('admin/kb/articles/edit/' . $article_id . '/#attachments');
        } else {
            redirect('admin/kb/articles/');
        }
    }