Alias attribute

app/models/registrar.rb

@@ -36,6 +36,8 @@ class Registrar < ActiveRecord::Base
             allow_blank: true, if: proc { |c| c.email_changed? }
   validates :billing_email, email_format: { message: :invalid }, allow_blank: true
 
+  alias_attribute :contact_email, :email
+
   WHOIS_TRIGGERS = %w(name email phone street city state zip)
 
   after_commit :update_whois_records

test/models/registrar_test.rb

@@ -145,6 +145,12 @@ def test_invalid_without_address_country_code
     assert registrar.invalid?
   end
 
+  def test_aliases_contact_email_to_email
+    email = '[email protected]'
+    registrar = Registrar.new(email: email)
+    assert_equal email, registrar.contact_email
+  end
+
   def test_full_address
     registrar = Registrar.new(address_street: 'Main Street 1', address_zip: '1234',
                               address_city: 'NY', address_state: 'NY State')