NAME

Plack::Middleware::Session - Middleware for session management

SYNOPSIS

use Plack::Builder;

my $app = sub {
    my $env = shift;
    my $session = $env->{'psgix.session'};
    return [
        200,
        [ 'Content-Type' => 'text/plain' ],
        [ "Hello, you've been here for ", $session->{counter}++, "th time!" ],
    ];
};

builder {
    enable 'Session';
    $app;
};

# Or, use the File store backend (great if you use multiprocess server)
# For more options, see perldoc Plack::Session::Store::File
builder {
    enable 'Session', store => 'File';
    $app;
};

DESCRIPTION

This is a Plack Middleware component for session management. By default it will use cookies to keep session state and store data in memory. This distribution also comes with other state and store solutions. See perldoc for these backends how to use them.

It should be noted that we store the current session as a hash reference in the psgix.session key inside the $env where you can access it as needed.

NOTE: As of version 0.04 the session is stored in psgix.session instead of plack.session.

State

Plack::Session::State

This will maintain session state by passing the session through the request params. It does not do this automatically though, you are responsible for passing the session param.

Plack::Session::State::Cookie

This will maintain session state using browser cookies.

Store

Plack::Session::Store

This is your basic in-memory session data store. It is volatile storage and not recommended for multiprocessing environments. However it is very useful for development and testing.

Plack::Session::Store::File

This will persist session data in a file. By default it uses Storable but it can be configured to have a custom serializer and deserializer.

Plack::Session::Store::Cache

This will persist session data using the Cache interface.

Plack::Session::Store::Null

Sometimes you don't care about storing session data, in that case you can use this noop module.

OPTIONS

The following are options that can be passed to this mdoule.

state

This is expected to be an instance of Plack::Session::State or an object that implements the same interface. If no option is provided the default Plack::Session::State::Cookie will be used.

store

This is expected to be an instance of Plack::Session::Store or an object that implements the same interface. If no option is provided the default Plack::Session::Store will be used.

It should be noted that this default is an in-memory volatile store is only suitable for development (or single process servers). For a more robust solution see Plack::Session::Store::File or Plack::Session::Store::Cache.

BUGS

All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to cpan-RT.

AUTHOR

Tatsuhiko Miyagawa

Stevan Little <stevan.little@iinteractive.com>

COPYRIGHT AND LICENSE

Copyright 2009, 2010 Infinity Interactive, Inc.

http://www.iinteractive.com

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.