Catalyst::Authentication::Credential::Twitter - Twitter authentication for Catalyst

In MyApp.pm

 use Catalyst qw/
    Authentication
    Session
    Session::Store::FastMmap
    Session::State::Cookie
	Session::PerUser
 /;

 MyApp->config(
     "Plugin::Authentication" => {
         default_realm => "twitter",
         realms => {
             twitter => {
                 credential => {
                     class => "Twitter",
                 },

                 consumer_key    => 'twitter-consumer_key-here',
                 consumer_secret => 'twitter-secret-here',
                 callback_url => 'http://mysite.com/callback',
				 # you can bypass the above by including
				 # "twitter_consumer_key", "twitter_consumer_secret", 
				 # and "twitter_callback_url" in your Catalyst site
				 # configuration or yml file
             },
         },
     },
 );

And then in your Controller:

 sub login : Local {
    my ($self, $c) = @_;

    my $realm = $c->get_auth_realm('twitter');
    $c->res->redirect( $realm->credential->authenticate_twitter_url($c) );
 }

And finally the callback you specified in your API key request above (e.g. example.com/twitter/callback/ ):

 sub callback : Local {
    my ($self, $c) = @_;

    if (my $user = $c->authenticate(undef,'twitter')) {
		# user has an account - redirect or do something cool
    	$c->res->redirect("/super/secret/member/area");
	}
	else {
		# user doesn't have an account - either detect Twitter
		# credentials and create one, or return an error.
		#
		# Note that "request_token" and "request_token_secret"
		# are stored in $c->user_session as hashref variables under
		# the same names
	}
 }

This module handles Twitter API authentication in a Catalyst application.

As per guidelines of Catalyst::Plugin::Authentication, there are two mandatory methods, new and authenticate. Since this is not really enough for the Twitter API, I've added one more.

Will not be called by you directly, but will use the configuration you provide (see above). Mandatory parameters are consumer_key, consumer_secret and callback_url. Note that you can also include twitter_consumer_key, twitter_consumer_secret, and twitter_callback_url as variables in your Catalyst site configuration or yml file and you don't need to pass configuration parameters in your MyApp.pm file. Please see Net::Twitter for more details on them.

This method will return the authentication URL. Bounce your users there before calling the authentication method.

Handles the authentication. Nothing more, nothing less. It returns a Catalyst::Authentication::User::Hash with the following keys (all coming straight from Twitter).

twitter_user

twitter_user_id

twitter_access_token

twitter_access_token_secret

Your database must at least contain a column called "twitter_user_id" in your main user table. If the other keys are present they will be updated on login with Twitter's most up-to-date information for that user.

Only performs the twitter authentication. Returns a hashref containing the user's information given by Twitter (see authenticate() above for the lists of keys returned).

Contains the user's twitter information after a successful twitter authentication via authenticate_twitter() or authenticate(). Useful if, for example, you want to create users on-the-fly:

    sub twitter_callback :Path( 'twitter/callback' ) {
        my ($self, $c) = @_;

        my $twitter = $c->get_auth_realm('twitter')->credential;
        my $user =  $twitter->authenticate( $c );

        # properly authenticated against twitter,
        # user just doesn't exist yet
        if ( !$user and  $twitter->twitter_user ) {
            $user = $self->model->create_user( $twitter->twitter_user );
        }

        # etc
    }

Jesse Stay <jesse@staynalive.com> http://staynalive.com

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

The full text of the license can be found in the LICENSE file included with this module.

Catalyst::Plugin::Authentication, Net::Twitter

Bugs? Impossible!. Please report bugs to http://rt.cpan.org/Ticket/Create.html?Queue=Catalyst-Authentication-Credential-Twitter

Thanks go out Daisuke Murase for writing C::P::A::Credential::Flickr, Marc Mims and Chris Thompson for Net::Twitter.