using html.erb as a stand alone file

HI

I know this isn't good practice and certainly not what rails is all about but is this possible. I need to customize my CRM to use stripe which it doesn't support at present.the CRM is written in Ruby and has a number of rhtml pages. Can I add my own display page of html.erb extension to these pages to receive a variable on one of the CRM's existing pages written as: <%= (basket.to_f_withvat).to_money %> On this stand alone page I can then assign this variable: 'basket_total = (basket.to_f_withvat).to_money' and then use this to pay with the Stripe Gateway as below

begin   charge = Stripe::Charge.create(     :amount => basket_total, # This is your value as a variable.     :currency => "usd",     :card => token,     :description => "payinguser@example.com"

---- etc Again I know this isn't what RoR and MVC is all about, but it's the only way I can think of doing this.

Thanks