public function execute()
{
list($start_date, $end_date, $group_by) = shopReportsSalesAction::getTimeframeParams();
$checkout_flow = new shopCheckoutFlowModel();
$stat = $checkout_flow->getStat($start_date, $end_date);
$app_settings_model = new waAppSettingsModel();
$this->view->assign(array('stat' => $stat, 'checkout_flow_changed' => $app_settings_model->get('shop', 'checkout_flow_changed', 0)));
}