[LRUG] submitting a form programatically

[Ed Davey]

What's a good (simple) way of submitting a form programatically from  
inside a controller and then returning the response to a template?

(I'm sending shopping basket data through to Worldpay and getting  
back their form for the customer to submit their credit card)

I saw a rubyquiz solution using Mechanize which looked interesting.  
Also came across ruby-htmlform which can use open-uri or net/http

Any tips?

Thanks

ED