NAME
    Dancer::Session::DBIC - DBIx::Class session engine for Dancer

VERSION
    0.005

DESCRIPTION
    This module implements a session engine for Dancer by serializing the
    session, and storing it in a database via DBIx::Class. The default
    serialization method is JSON, though one can specify any serialization
    format you want. YAML and Storable are viable alternatives.

    JSON was chosen as the default serialization format, as it is fast,
    terse, and portable.

SYNOPSIS
    Example configuration:

        session: "DBIC"
        session_options:
          dsn:      "DBI:mysql:database=testing;host=127.0.0.1;port=3306" # DBI Data Source Name
          schema_class:    "Interchange6::Schema"  # DBIx::Class schema
          user:     "user"      # Username used to connect to the database
          pass: "password"  # Password to connect to the database
          resultset: "MySession" # DBIx::Class resultset, defaults to Session
          id_column: "my_session_id" # defaults to sessions_id
          data_column: "my_session_data" # defaults to session_data

    In conjunction with Dancer::Plugin::DBIC, you can simply use the schema
    object provided by this plugin in your application, either by providing
    the name of the schema used by the plugin in the config:

        session_options:
            schema: default

    Or by passing the schema object directly in the code:

        set session_options => {schema => schema};

    Custom serializer / deserializer can be specified as follows:

        set 'session_options' => {
            schema       => schema,
            serializer   => sub { YAML::Dump(@_); },
            deserializer => sub { YAML::Load(@_); },
        };

SESSION EXPIRATION
    A timestamp field that updates when a session is updated is recommended,
    so you can expire sessions server-side as well as client-side.

    This session engine will not automagically remove expired sessions on
    the server, but with a timestamp field as above, you should be able to
    to do this manually.

RESULT CLASS EXAMPLE
    This result class would work as-is with the default values of
    `session_options'. It uses DBIx::Class::TimeStamp to auto-set the
    `created' and `last_modified' timestamps.

        package MySchema::Result::Session;

        use strict;
        use warnings;

        use base 'DBIx::Class::Core';

        __PACKAGE__->load_components(qw(TimeStamp));

        __PACKAGE__->table('sessions');

        __PACKAGE__->add_columns(
            sessions_id => {
                data_type => 'varchar', size => 255
            },
            session_data => {
                data_type => 'text'
            },
            created => {
                data_type => 'datetime', set_on_create => 1
            },
            last_modified => {
                data_type => 'datetime', set_on_create => 1, set_on_update => 1
            },
        );

        __PACKAGE__->set_primary_key('sessions_id');

        1;

METHODS
  create()
    Creates a new session. Returns the session object.

  flush()
    Write the session to the database. Returns the session object.

  retrieve($id)
    Look for a session with the given id.

    Returns the session object if found, `undef' if not. Logs a debug-level
    warning if the session was found, but could not be deserialized.

  destroy()
    Remove the current session object from the database.

SEE ALSO
    Dancer, Dancer::Session

AUTHOR
    Stefan Hornburg (Racke) <racke@linuxia.de>

ACKNOWLEDGEMENTS
    Based on code from Dancer::Session::DBI written by James Aitken and code
    from Dancer::Plugin::DBIC written by Naveed Massjouni.

    Enhancements provided by:

    Yanick Champoux (GH #6, #7). Peter Mottram (GH #5).

COPYRIGHT AND LICENSE
    This software is copyright (c) Stefan Hornburg.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.