Introduction

This Bundle enables integration with Twitter PHP. Furthermore it also provides a Symfony2 authentication provider so that users can login to a Symfony2 application via Twitter. Furthermore via custom user provider support the Twitter login can also be integrated with other data sources like the database based solution provided by FOSUserBundle.

Installation

1. Add this bundle and Abraham Williams' Twitter library to your project as Git submodules:

    $ git submodule add git://github.com/FriendsOfSymfony/FOSTwitterBundle.git vendor/bundles/FOS/TwitterBundle
    $ git submodule add git://github.com/kertz/twitteroauth.git vendor/twitteroauth
   

Note: The kertz/twitteroauth is patched to be compatible with FOSTwitterBundle

2. Register the namespace FOS to your project's autoloader bootstrap script:

    //app/autoload.php
    $loader->registerNamespaces(array(
          // ...
          'FOS'    => __DIR__.'/../vendor/bundles',
          // ...
    ));
   

3. Add this bundle to your application's kernel:

    //app/AppKernel.php
    public function registerBundles()
    {
        return array(
            // ...
            new FOS\TwitterBundle\FOSTwitterBundle(),
            // ...
        );
    }
   

4. Configure the twitter service in your YAML configuration:

      #app/config/config.yml
      fos_twitter:
          file: %kernel.root_dir%/../vendor/twitteroauth/twitteroauth/twitteroauth.php
          consumer_key: xxxxxx
          consumer_secret: xxxxxx
          callback_url: http://www.example.com/login_check
   

5. Add the following configuration to use the security component:

      #app/config/config.yml
      security:
          factories:
            - "%kernel.root_dir%/../vendor/bundles/FOS/TwitterBundle/Resources/config/security_factories.xml"
          providers:
              fos_twitter:
                  id: fos_twitter.auth
          firewalls:
              secured:
                  pattern:   /secured/.*
                  fos_twitter: true
              public:
                  pattern:   /.*
                  anonymous: true
                  fos_twitter: true
                  logout: true
          access_control:
              - { path: /.*, role: [IS_AUTHENTICATED_ANONYMOUSLY] }
   

Using Twitter @Anywhere

Note: If you want the Security Component to work with Twitter @Anywhere, you need to send a request to the configured check path upon successful client authentication (see https://gist.github.com/1021384 for a sample configuration).

A templating helper is included for using Twitter @Anywhere. To use it, first call the ->setup() method toward the top of your DOM:

    <!-- inside a php template -->
      <?php echo $view['twitter_anywhere']->setup() ?>
    </head>

    <!-- inside a twig template -->
      {{ twitter_anywhere_setup() }}
    </head>

Once that's done, you can queue up JavaScript to be run once the library is actually loaded:

    <!-- inside a php template -->
    <span id="twitter_connect"></span>
    <?php $view['twitter_anywhere']->setConfig('callbackURL', 'http://www.example.com/login_check') ?>
    <?php $view['twitter_anywhere']->queue('T("#twitter_connect").connectButton()') ?>

    <!-- inside a twig template -->
    <span id="twitter_connect"></span>
    {{ twitter_anywhere_setConfig('callbackURL', 'http://www.example.com/login_check') }}
    {{ twitter_anywhere_queue('T("#twitter_connect").connectButton()') }}

Finally, call the ->initialize() method toward the bottom of the DOM:

    <!-- inside a php template -->
      <?php $view['twitter_anywhere']->initialize() ?>
    </body>

    <!-- inside a twig template -->
    {{ twitter_anywhere_initialize() }}
    </body>

Configuring Twitter @Anywhere

You can set configuration using the templating helper. with the setConfig() method.

Example Custom User Provider using the FOSUserBundle

To use this provider you will need to add a new service in your config.yml

# app/config/config.yml

        my.twitter.user:
            class: Acme\YourBundle\Security\User\Provider\TwitterProvider
            arguments:
                twitter_oauth: "@fos_twitter.api"
                userManager: "@fos_user.user_manager"
                validator: "@validator"
                session: "@session" 

Also you would need some new properties and methods in your User model class.

<?php
// src/Acme/YourBundle/Entity/User.php

        /** 
         * @var string
         */
        protected $twitterID;

        /** 
         * @var string
         */
        protected $twitter_username;


        /**
         * Set twitterID
         *
         * @param string $twitterID
         */
        public function setTwitterID($twitterID)
        {
            $this->twitterID = $twitterID;
            $this->setUsername($twitterID);
            $this->salt = '';
        }

        /**
         * Get twitterID
         *
         * @return string 
         */
        public function getTwitterID()
        {
            return $this->twitterID;
        }

        /**
         * Set twitter_username
         *
         * @param string $twitterUsername
         */
        public function setTwitterUsername($twitterUsername)
        {
            $this->twitter_username = $twitterUsername;
        }

        /**
         * Get twitter_username
         *
         * @return string 
         */
        public function getTwitterUsername()
        {
            return $this->twitter_username;
        }

And this is the TwitterProvider class

<?php
// src/Acme/YourBundle/Security/User/Provider/TwitterProvider.php


namespace Acme\YourBundle\Security\User\Provider;

use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\HttpFoundation\Session;
use \TwitterOAuth;
use FOS\UserBundle\Entity\UserManager;
use Symfony\Component\Validator\Validator;

class TwitterProvider implements UserProviderInterface
{
    /** 
     * @var \Twitter
     */
    protected $twitter_oauth;
    protected $userManager;
    protected $validator;
    protected $session;

    public function __construct(TwitterOAuth $twitter_oauth, UserManager $userManager,Validator $validator, Session $session)
    {   
        $this->twitter_oauth = $twitter_oauth;
        $this->userManager = $userManager;
        $this->validator = $validator;
        $this->session = $session;
    }   

    public function supportsClass($class)
    {   
        return $this->userManager->supportsClass($class);
    }   

    public function findUserByTwitterId($twitterID)
    {   
        return $this->userManager->findUserBy(array('twitterID' => $twitterID));
    }   

    public function loadUserByUsername($username)
    {
        $user = $this->findUserByTwitterId($username);


         $this->twitter_oauth->setOAuthToken( $this->session->get('access_token') , $this->session->get('access_token_secret'));

        try {
             $info = $this->twitter_oauth->get('account/verify_credentials');
        } catch (Exception $e) {
             $info = null;
        }

        if (!empty($info)) {
            if (empty($user)) {
                $user = $this->userManager->createUser();
                $user->setEnabled(true);
                $user->setPassword('');
                $user->setAlgorithm('');
            }

            $username = $info->screen_name;


            $user->setTwitterID($info->id);
            $user->setTwitterUsername($username);
            $user->setEmail('');
            $user->setFirstname($info->name);

            $this->userManager->updateUser($user);
        }

        if (empty($user)) {
            throw new UsernameNotFoundException('The user is not authenticated on twitter');
        }

        return $user;

    }

    public function refreshUser(UserInterface $user)
    {
        if (!$this->supportsClass(get_class($user)) || !$user->getTwitterID()) {
            throw new UnsupportedUserException(sprintf('Instances of "%s" are not supported.', get_class($user)));
        }

        return $this->loadUserByUsername($user->getTwitterID());
    }
}

Finally, to get the authentication tokens from Twitter you would need to create an action in your controller like this one.

<?php
// src/Acme/YourBundle/Controller/DefaultController.php

        /** 
        * @Route("/connectTwitter", name="connect_twitter")
        *
        */
        public function connectTwitterAction()
        {   

          $request = $this->get('request');
          $twitter = $this->get('fos_twitter.service');

          $authURL = $twitter->getLoginUrl($request);

          $response = new RedirectResponse($authURL);

          return $response;

        }  

You can create a button in your Twig template that will send the user to authenticate with Twitter.

         <a href="{{ path ('connect_twitter')}}"> <img src="/images/twitterLoginButton.png"></a> 

• Note: Your callback URL in your config.yml must point to your configured check_path

# app/config/config.yml

        fos_twitter:
            ...
            callback_url: http://www.yoursite.com/twitter/login_check

Remember to edit your security.yml to use this provider

# app/config/security.yml

        security:
            factories:
                - "%kernel.root_dir%/../vendor/bundles/FOS/TwitterBundle/Resources/config/security_factories.xml"

            encoders:
                Symfony\Component\Security\Core\User\User: plaintext

            role_hierarchy:
                ROLE_ADMIN:       ROLE_USER
                ROLE_SUPER_ADMIN: [ROLE_USER, ROLE_ADMIN, ROLE_ALLOWED_TO_SWITCH]

            providers:

                my_fos_twitter_provider:
                    id: my.twitter.user 

            firewalls:
                dev:
                    pattern:  ^/(_(profiler|wdt)|css|images|js)/
                    security: false

                public:
                    pattern:  /
                    fos_twitter:
                        login_path: /twitter/login
                        check_path: /twitter/login_check
                        default_target_path: /
                        provider: my_fos_twitter_provider

                    anonymous: ~