Is normal STI with multiple values ​​in type possible in Rails 5?

Question

Ruby on Rails

Good day.
There is a Product model with the value type="Сd,Вvd,Usb'
Is it possible to do the following without much hassle with this type value?

class Cd < Product end;
class Dvd < Product end;
class Usb < Product end;

Or will I have to mankpatch https://github.com/rails/rails/blob/master/activer... ?