Self In Rails Models

For assignment self is necessary. This clarifies that we assign an attribute and not a local variable.

class User < ActiveRecord::Base
  def set_first_name_to_oliver
     self.first_name = 'oliver'
  end
end


For access self is not necessary and we should leave it away.

class User < ActiveRecord::Base
  def full_name
    "#{first_name} #{last_name}"
  end
end


More:
- when-to-use-self-in-ruby-rails-models [themomorohoax.com]
- use-self-explicitly [rubyfleebie.com]