Password less activation

Note: This will not work if you also using external authentication (OAuth).

I recommend following almost all the steps on the User Activation example. But then modify things slightly as follows.

Fix the user model so that the activation emails will be sent even if no password is stored.

class User < ActiveRecord::Base
  authenticates_with_sorcery!

  # fix sorcery so that we can activate without a password
  before_create :setup_activation
  def external?
    false
  end
end