Rails 5 remote form redirect to different pages using virtual attribute

Question

I have a remote: true form in my Rails 5 app and I'd like to redirect to different pages depending on when it's used.

I've tried adding a :redirect_to virtual attribute:

<%= a.input :redirect_to, as: :hidden, input_html: { 
    value: confirmation_orders_path
} %>

And modified my model to accept this virtual attribute:

attribute :redirect_to, :string
attr_accessor :redirect_to

But I still see Unpermitted parameter: :redirect_to. What can I do to allow this param to pass?