This is mainly a wrapper for the Facebook PHP SDK class.

You can also use it to include the Facebook JS SDK on your pages, and easily set Open Graph meta tags.

Also included are helper widgets for all of the Facebook Social Plugins.

Facebook PHP SDK: http://developers.facebook.com/docs/reference/php/ https://github.com/facebook/php-sdk

Facebook JS SDK: http://developers.facebook.com/docs/reference/javascript/

Facebook Social Plugins: http://developers.facebook.com/docs/reference/plugins

Open Graph Protocol: http://developers.facebook.com/docs/opengraph/

A lot of this comes from forking ianare's faceplugs Yii extension: http://www.yiiframework.com/extension/faceplugs https://github.com/digitick/yii-faceplugs

---

INSTALLATION:

Copy the file "facebook-channel.php" to your project root.

Copy the rest of this extension in to your project's protected/extensions directory.

Include the extension in your Yii config:

'components'=>array(
  'facebook'=>array(
    'class' => 'ext.yii-facebook-opengraph.SFacebook',
    'appId'=>'YOUR_FACEBOOK_APP_ID', // needed for JS SDK, Social Plugins and PHP SDK
    'secret'=>'YOUR_FACEBOOK_APP_SECRET', // needed for the PHP SDK
    //'locale'=>'en_US', // override locale setting (defaults to en_US)
    //'jsSdk'=>true, // don't include JS SDK
    //'async'=>true, // load JS SDK asynchronously
    //'jsCallback'=>false, // declare if you are going to be inserting any JS callbacks to the async JS SDK loader
    //'status'=>true, // JS SDK - check login status
    //'cookie'=>true, // JS SDK - enable cookies to allow the server to access the session
    //'oauth'=>true,  // JS SDK -enable OAuth 2.0
    //'xfbml'=>true,  // JS SDK - parse XFBML / html5 Social Plugins
    //'html5'=>true,  // use html5 Social Plugins instead of XFBML
    //'ogTags'=>array(  // set default OG tags
        //'title'=>'MY_WEBSITE_NAME',
        //'description'=>'MY_WEBSITE_DESCRIPTION',
        //'image'=>'URL_TO_WEBSITE_LOGO',
    //),
  ),
),

Then, in your base Controller, add this function to override the afterRender callback:

protected function afterRender($view, &$output) {
  parent::afterRender($view,$output);
  //Yii::app()->facebook->addJsCallback($js); // use this if you are registering any $js code you want to run asyc
  Yii::app()->facebook->initJs($output); // this initializes the Facebook JS SDK on all pages
  Yii::app()->facebook->renderOGMetaTags(); // this renders the OG tags
  return true;
}

---

USAGE:

Setting OG tags on a page (in view or action):

<?php Yii::app()->facebook->ogTags['title'] = "My Page Title"; ?>

Render Facebook Social Plugins using helper Yii widgets:

<?php $this->widget('ext.yii-facebook-opengraph.plugins.LikeButton', array(
   //'href' => 'YOUR_URL', // if omitted Facebook will use the OG meta tag
   'show_faces'=>true,
   'send' => true
)); ?>

You can, of course, just use the code for this as well if loading the JS SDK on all pages using the initJs() call in afterRender():

<div class="fb-like" data-send="true" data-width="450" data-show-faces="true"></div>

To use the PHP SDK anywhere in your application, just call it like so (there pass-through the Facebook class):

<?php $userid = Yii::app()->facebook->getUser() ?>
<?php $loginUrl = Yii::app()->facebook->getLoginUrl() ?>
<?php $results = Yii::app()->facebook->api('/me') ?>

I also created a couple of little helper functions:

<?php $userinfo = Yii::app()->facebook->getInfo() // gets the Graph info of the current user ?>
<?php $imageUrl = Yii::app()->facebook->getProfilePicture($size) // gets the Facebook picture URL of the current user ?>
<?php $userinfo = Yii::app()->facebook->getInfoById($openGraphId) // gets the Graph info of a given OG entity ?>
<?php $imageUrl = Yii::app()->facebook->getProfilePictureById($openGraphId) // gets the Facebook picture URL of a given OG entity ?>

---

I plan on continuing to update and bugfix this extension as needed.

Please log bugs to the GitHub tracker here.

Extension is posted on Yii website also: http://www.yiiframework.com/extension/facebook-opengraph/

Updated 01/04/2012 by Evan Johnson http://splashlabsocial.com