passwords_controller.rb

# app/controllers/users/password_controller.rb

class Users::PasswordsController < Devise::PasswordsController
  def resource_params
    params.require(:user).permit(:email, :password, :password_confirmation)
  end
  private :resource_params
end

registrations_controller.rb

# app/controllers/users/registrations_controller.rb

class Users::RegistrationsController < Devise::RegistrationsController
  def resource_params
    params.require(:user).permit(:name, :email, :password, :password_confirmation)
  end
  private :resource_params
end

routes.rb

# config/routes.rb

devise_for :users, :controllers => {:registrations => "users/registrations", :passwords => "users/passwords"}