Question

By convention, Rails only “attaches” the view helper which corresponds to the controller the erb file is called of.

How can I access a view helper’s methods of an arbitrary view helper in Rails?

Answer 1

If you need to do that, something is wrong with the organization of your code. Instead, move the helper methods that both of your views need into a common module, and include that module in both.

For example, if you have:

module ApplesHelper
  def flavor_of(fruit)
  end
end

and you want /bananas views to have access to the flavor_of method, then do this:

module Flavored
  def flavor_of(fruit)
    # ...
  end
end

module ApplesHelper
  include Flavored
end

module BananasHelper
  include Flavored
end

---

Update: I realized that I didn’t actually answer the original question directly. The way to include another helper in a view is with helper:

class BananasController ...
  helper ApplesHelper
end

Now all /bananas view also have the ApplesHelper methods available to them.