<?php
class Model_Page extends \Nos\Orm\Model
{
protected static $_behaviours = array(
'Nos\Orm_Behaviour_Sortable' => array(
'events' => array('after_sort', 'before_insert'),
'sort_property' => 'page_sort',
),
);
}
$page_1 = Model_Page::find(1);
$page_2 = Model_Page::find(2);
$page_2->move_after($page_1);