public function actionPrice()
{
if (isset($_POST['p'])) {
$modelPrice = new Price();
$modelPrice->price = $_POST['p']['p_price'];
$modelPrice->tax = $_POST['p']['p_tax'];
$modelPrice->total = $_POST['p']['p_total'];
$modelPrice->calculate();
echo $modelPrice->getAjaxValue();
} else {
throw new Exception(Yii::t('error', 'Bad request'));
}
}