app/models/user_action_observer.rb


class UserActionObserver < ActiveRecord::Observer
  observe User, Page, Layout

  def current_user=(user)
    self.class.current_user = user
  end

  def self.current_user=(user)
    Thread.current[:current_user] = user
  end

  def current_user
    self.class.current_user
  end

  def self.current_user
    Thread.current[:current_user]
  end

  def before_create(model)
    # model.created_by = self.current_user
  end

  def before_update(model)
    # model.updated_by = self.current_user
  end
end