Ruby on Rails

railstutorial.org has a suggestion which strikes me as a little odd.
Here:

http://ruby.railstutorial.org/chapters/sign-in-sign-out#code:sessions_helper_include

... it suggests this code:

class ApplicationController < ActionController::Base
protect_from_forgery
include SessionsHelper
end

...making SessionsHelper available essentially everywhere. I
understand that authentication/authorization is cross-cutting, but is
this really the best place? Would functionality not strictly needed in
views be better placed in ApplicationController or elsewhere?

Thoughts?

Thanks,

-Craig

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