Updated RegistrationsController that uses Contact association

registrations_controller.rb

class RegistrationsController < Devise::RegistrationsController
  protected
  
  def sign_up_params
    params.require(:user).permit(
      :password,
      :password_confirmation,
      contact: [
        :name,
        email_addresses_attributes: [ :email ]
      ]
    )
  end
end