是否可以在控制器中使用“number_to_currency”？

I a, building a dropdown menu in a form that displays a list of available options and their prices in this form: "service - price". My problem, however, is that it doesn't look like I can use number_to_currency inside my controller. Is there another way to achieve the same effect, or to access number_to_currency from my controller? Here is my initial effort:I a, building a dropdown menu in a form that di