time zone per user

gistfile1.rb

class ApplicationController < ActionController::Base

  before_filter :restore_time_zone
  after_filter :remember_time_zone

  protected
  
  def restore_time_zone
    Time.zone = cookies[:time_zone] if cookies[:time_zone]
    Time.zone = current_user.time_zone if current_user && current_user.time_zone
  end
  
  def remember_time_zone
    cookies[:time_zone] = { :value => Time.zone.name, :expires => 1.year.from_now }
    if current_user
      current_user.time_zone = Time.zone.name
      current_user.save
    end
  end
end