public function move_down()
{
$this->output->set_content_type('application/json');
$uri = $this->uri->ruri_to_assoc(3);
if (isset($uri['period_id'])) {
$this->_transaction_isolation();
$this->db->trans_begin();
$period = new Period();
$period->get_by_id($uri['period_id']);
$period->move_down();
if ($this->db->trans_status()) {
$this->db->trans_commit();
$this->output->set_output(json_encode(TRUE));
$this->_action_success();
} else {
$this->db->trans_rollback();
$this->output->set_output(json_encode(FALSE));
}
} else {
$this->output->set_output(json_encode(FALSE));
}
}
