Call an helper method from a controller

define the helper in the controller, and use helper_method maybe?

http://groups-beta.google.com/group/rubyonrails-talk/browse_thread/thread/e31977720617b676/8b5dd9e5209e3b3e?lnk=gst&q=view+controller+helper&rnum=1#8b5dd9e5209e3b3e

You can also directly instanciate a Helper object and call a method.

example with number_to_currency:

Object.new.extend(ActionView::Helpers::NumberHelper).number_to_currency(number,
options)

but beware that is there are methods of other Helpers methods, they will
fail.