helper_method(*methods) — ActionController::Helpers::ClassMethods

helper_method(*methods)

Declare a controller method as a helper. For example, the following makes the current_user controller method available to the view:

class ApplicationController < ActionController::Base
  helper_method :current_user, :logged_in?

  def current_user
    @current_user ||= User.find_by_id(session[:user])
  end

   def logged_in?
     current_user != nil
   end
end

In a view:

<% if logged_in? -%>Welcome, <%= current_user.name %><% end -%>

Parameters

methods rest

Source

# File actionpack/lib/action_controller/helpers.rb, line 163
      def helper_method(*methods)
        methods.flatten.each do |method|
          master_helper_module.module_eval <<-end_eval
            def #{method}(*args, &block)                    # def current_user(*args, &block)
              controller.send(%(#{method}), *args, &block)  #   controller.send(%(current_user), *args, &block)
            end                                             # end
          end_eval
        end
      end

Defined in actionpack/lib/action_controller/helpers.rb line 163 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionController::Helpers::ClassMethods

Signature

Parameters