Rails can't call method in partial

When I to call a method in a partial I get a ‘undefined local method for class’ error.

in my view, home.haml

    = render "layouts/side"

in my partial /layouts/_side.haml

    %      div
- test_method?
        Is true.

In the controller that serves home.haml I put

    def test_method?
      return true
    end

I even tried putting the method in the application helper file, no cigar. Any ideas?

You need to use helper_method :test_method? in your Application helper file. I believe this will give you access to the method inside the view

http://apidock.com/rails/ActionController/Helpers/ClassMethods/helper_method