public function findCollectionPagesById($collectionId, $published = true)
    {
        $this->makeCollectionPageSelect();
        $this->sql .= ' and c.id = ?';
        $this->bindValues[] = $collectionId;

        if ($published) {
            $this->sql .= " and p.published_date <= '{$this->today()}'";
        }

        return $this->find();
    }