public function actionKira()
{
$model = new Calc();
if (isset($_POST['Calc'])) {
$model->attributes = $_POST['Calc'];
$model->total = $model->field1 + $model->field2;
if ($model->save()) {
$this->redirect(array('kira', 'id' => $model->id));
}
}
$this->render('kira', array('model' => $model));
}