public function indexAction()
    {
        $this->view->data = array();
        $s = $this->_getSelectIndex();
        if ($this->_loadColumns) {
            foreach ($this->_loadColumns as $c) {
                $s->expr($c);
            }
        }
        foreach ($this->_model->getRows($s) as $row) {
            $this->view->data[] = $this->_loadDataFromRow($row);
        }
        $this->view->total = $this->_model->countRows($s);
    }