Fix "unpermitted parameters" devise & rails 4 strong parameters issue

gistfile1.txt

# Fix "unpermitted parameters"  devise & rails 4 strong parameters issue
# registrations_controller.rb
class RegistrationsController < Devise::RegistrationsController
  ...
  def sign_up_params
     params.require(:user).permit(:email, :username, :whatever, :other, :params)
  end
end


# routes.rb
devise_for :users, controllers: {registrations: "registrations" }

Life saver.