Required fields on confirmable

lib/devise/models/confirmable.rb

@@ -36,6 +36,14 @@ module Devise
         after_update :send_confirmation_instructions, :if => :reconfirmation_required?
       end
 
+      module ModuleMethods
+        extend self
+
+        def required_fields
+          [:confirmation_token, :confirmed_at, :confirmation_sent_at]
+        end
+      end
+
       # Confirm a user by setting it's confirmed_at to actual time. If the user
       # is already confirmed, add an error to email field. If the user is invalid
       # add errors

test/models/confirmable_test.rb

@@ -328,4 +328,12 @@ class ReconfirmableTest < ActiveSupport::TestCase
     admin = Admin.find_by_unconfirmed_email_with_errors(:email => "new_test@email.com")
     assert admin.persisted?
   end
+
+  test 'required_fields should contain the fields that Devise uses' do
+    assert_equal Devise::Models::Confirmable::ModuleMethods.required_fields.sort, [
+      :confirmation_sent_at,
+      :confirmation_token,
+      :confirmed_at
+    ]
+  end
 end