Authlogic current_user_session and current_user

Question

I have the following helper methods in the application_controller.rb for authlogic:

def current_user_session
  return @current_user_session if defined?(@current_user_session)
  @current_user_session = UserSession.find
end

def current_user
  return @current_user if defined?(@current_user)
  @current_user = current_user_session && current_user_session.record
end

I do not understand how the current_user_session method - specifically, how UserSession.find obtains the current user's session. I also do not understand what it is doing with find, where no argument is given.

Answer 1

It doesn't need to pass it an argument since it uses a unique session ID whose functionality is built into Rails . Check out the authlogic documentation for the find method for more information on it. It's not the same thing as an Active Record class, where find queries the database for a specific primary key.