How can I get url of image variant in model (outside of controller/view)? Active Storage

Question

I can get url in model with this code (Active Storage)

Rails.application.routes.url_helpers.rails_blob_path(picture_of_car, only_path: true)

But

Answer 1

variant = picture_of_car
            .variant(resize: '300x300')
            .processed 

variant.service.send(:path_for, variant.key) # Absolute path to variant file