The main reason that you don't already have a built-in way to do that in the view model is because most stores don't do this. The most common use case is that a product could belong to many categories, so adding this to the view is a nightmare scenario to a designer. :D

You can add a method to the view in question that queries the API for the product and then list the various categories it belongs to.

thanks Will but i can't find anywhere how i can use api calls directly from a viewset using a method.
Is it a programming or designer work?
Is there any example about?