How to set a method globally?

Question

Ruby on Rails

Hello.
I can't get this line to work on the page /views/applications.html.haml
%h1.name #{@user.first_name} #{ @user.last_name}
On the pages users/show.html.haml it works.
How to set a method so that it works everywhere, on all pages?

Answer 1

You need to declare the method as a helper.

class ApplicationController < ActionController::Base
helper :show_user
   def show_user
       #блаблабла
   end
end

Answer 2

I can't get this line to work in /views/applications.html.haml

It's worth writing the error message you get when "can't force".
Wangyu that @user is not defined for you.