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Provides automatic session timeout in a Rails application.
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README

= auto-session-timeout

Provides automatic session timeout in a Rails application. Very easy
to install and configure. Have you ever wanted to force your users
off your app if they go idle for a certain period of time? Many
online banking sites use this technique. If your app is used on any
kind of public computer system, this plugin is a necessity.


== Installation

Install the gem:

  gem install jquery-auto-session-timeout

Or install in your Rails project:

  script/plugin install git://github.com/ffmike/auto-session-timeout.git

Or clone the project:

  git clone git://github.com/ffmike/auto-session-timeout.git


== Usage

After installing, tell your application controller to use auto timeout:

  class ApplicationController < ActionController::Base
    auto_session_timeout 1.hour
    ...
  end

You will also need to insert this line inside the <body></body> tags in
your views. The easiest way to do this is to insert it once inside your
default or application-wide layout. Make sure you are only rendering
it if the user is logged in, otherwise the plugin will attempt to force
non-existent sessions to timeout, wreaking havoc:

  <html>
    <head>...</head>
    <body>
      <% if logged_in? -%>
        <%= auto_session_timeout_js %>
      <% end -%>
      ...
    </body>
  </html>

You need to setup two actions: one to return the session status and
another that runs when the session times out. You can use the default
actions included with the plugin by inserting this line in your target
controller (most likely your user or session controller):

class SessionsController < ApplicationController
  auto_session_timeout_actions
  ...
end

To customize the default actions, simply override them. You can call
the render_session_status and render_session_timeout methods to use
the default implementation from the plugin, or you can define the
actions entirely with your own custom code:

  class SessionsController < ApplicationController
    def active
     render_session_status
    end

    def timeout
      render_session_timeout
    end
    ...
  end

In any of these cases, make sure to properly map the actions in
your routes.rb file:

  map.active '/active', :controller => 'sessions', :action => 'active'
  map.timeout '/timeout', :controller => 'sessions', :action => 'timeout'

You're done! Enjoy watching your sessions automatically timeout.


== Additional Configuration

By default, the JavaScript code checks the server every 60 seconds for
active sessions. If you prefer that it check more frequently, pass a
frequency attribute to the helper method. The frequency is given in
seconds. The following example checks the server every 15 seconds:

  <html>
    <head>...</head>
    <body>
      <% if logged_in? -%>
        <%= auto_session_timeout_js :frequency => 15 %>
      <% end -%>
      ...
    </body>
  </html>

== Changes

This version is pretty much identical to Matthew's original code, *except* that
I've switched the embedded javascript from Prototype to jQuery.

== Resources

Repository: http://github.com/ffmike/auto-session-timeout/
Blog: http://matthewbass.com + http://afreshcup.com
Author: Matthew Bass + Mike Gunderloy
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