Some thoughts about the law of Demeter

gistfile1.txt

BAD SMELL

class Invoice < ActiveRecord::Base
  belongs_to :user
end

<%= @invoice.user.name %> 
<%= @invoice.user.email %>


Refactor

class Invoice < ActiveRecord::Base
  belongs_to :user
  delegate :name, :email, :to => :user, :prefix => true
end

<%= @invoice.user_name %>
<%= @invoice.user_email %>

👍