In my Rails 2.x applications i could access controller instance
variables happily inside my application_helper.rb but with 3.0 that is
no longer the case.
Specifically I'm attempting to access the special controller instance
variables that are described in
namely: @_response, @action_name, @url, @_session, @_cookies,
@performed_render, @_flash, @template, @_params,
@before_filter_chain_aborted, @request_origin, @_headers,
What's up here? Usually Google is my friend here but nobody who has
reported this elsewhere (like on Stack Overflow) seems to have found
Thanks in advance.