utsessions allow the features of timed and unique sessions for an user account in Django.

What does it do ?

utsessions is a middleware that makes all opened user sessions unique.

When an user session is opened, the user account can't be reused before a certain amount of time. After this time, if the user account is reused, the first session is closed and a second one is opened.

A session can also be automaticaly closed after a choosen time.

This kind of behavior is useful for websites providing access to data by unique user account.

Philosophy

utsessions was written to be easily :

• Installed in your projects, by simply registering the middleware.
• Extended thanks to his design in object: each component can be removed or reused.
• Configured, with the settings.py file which allows different behaviors.

Installation

The easiest way is to use easy_install :

$> easy_install utsessions

Or download the latest packaged version at http://code.google.com/p/django-ut-sessions/ and unpack it.

You can also perform a Subversion checkout to get the latest code.

svn checkout http://django-ut-sessions.googlecode.com/svn/trunk/ django-ut-sessions

Inside the package use this command line to install the package into your PYTHONPATH.

$> python setup.py install

Project installation

Now simply add this following line into your MIDDLEWARE_CLASSES section.

 'utsessions.middleware.UTSessionMiddleware',

It must be after the SessionMiddleware and AuthentifcationMiddleware like this :

MIDDLEWARE_CLASSES = (
  'django.middleware.common.CommonMiddleware',
  'django.contrib.sessions.middleware.SessionMiddleware',
  'django.contrib.auth.middleware.AuthenticationMiddleware',
  'utsessions.middleware.UTSessionMiddleware',
)

Settings

If you want to define the period of a session before being logged out, set a value in seconds to SESSION_LIMIT_SECONDS in your settings.py

A session can be released for another user before a certain amount of time, set to default at 300 seconds. To change this value define SESSION_TOKEN_LIMIT_SECONDS. If set to 0, no lock will be created.

Tests

Put utsessions into your INSTALLED_APPS section and run :

$> python manage.py test utsessions