How to return formatted data in GridView?

Question

Yii

Hello.
Tell me how to return already formatted data to gridView?
At the moment I'm doing this in the gridView:

'value' => function($data){
                    return $data->getCurrencyPrice($data->price_roz);
                },

Is it possible to receive formatted data simply via: Thanks
'attribute' => 'price_roz',