Codeigniter 2.0/Facebook Connect - class init problem

Question

I'll go ahead and feel silly in front of everyone, cuz I can't spot what the issue here is, though I suspect it will be a real groaner. maybe describing it will jog something in my mind.

i am doing a Facebook Connect integration with CI2.0, based on this guy's work:

http://hitsend.ca/2010/10/facebook-connect-user-authentication-using-the-new-graph-api-in-codeigniter/

which I've upgraded to 2.0

some relevant code bits are:

config/facebook.php:


 $config['facebook_api_key'] = 'xxx';  (it is the ID, not the key, as he misnamed his array key)
 $config['facebook_secret_key'] = 'xxx';

controllers/fb_login.php


    function index() {
        $this->load->library('fb_connect');

libraries/fb_connect.php


    include(APPPATH.'libraries/facebook/facebook.php');

    class fb_connect {
          ....

        function fb_connect()
        {
            //Using the CodeIgniter object, rather than creating a copy of it
            $this->_obj =& get_instance();

            //loading the config paramters for facebook (where we stored our Facebook API and SECRET keys
            $this->_obj->load->config('facebook');
            //make sure the session library is initiated. may have already done this in another method.
            $this->_obj->load->library('session'); 

            $this->_api_key        = $this->_obj->config->item('facebook_api_key');
            $this->_secret_key    = $this->_obj->config->item('facebook_secret_key');

            $this->appkey = $this->_api_key;

            //connect to facebook
            $this->fb = new Facebook(array(
                          'appId'  => $this->_api_key,
                          'secret' => $this->_secret_key,
                          'cookie' => true
                        ));

and finally, the facebook php library: libraries/facebook/facebook.php


  public function __construct($fb_config) {
print_r($fb_config);
    $this->setAppId($fb_config['appId']);
    $this->setApiSecret($fb_config['secret']);
    if (isset($fb_config['cookie'])) {
      $this->setCookieSupport($fb_config['cookie']);
    }

The best way I can describe the issue is just to give you the output of print_r($fb_config):

Array ( [facebook_api_key] => xxx [facebook_secret_key] => xxx)

and Message: Undefined index: appId Message: Undefined index: secret

The facebook __construct() has been loading with the config file's $config[] array; no idea why it is doing this.

Thanks in advance for any leads or spottings of "dumb things I've done"

Seabass Seabass · Accepted Answer · 2011-05-04T19:52:45

The array returns two keys: facebook_api_key and facebook_secret_key, while the constructor is trying to read keys appId and secret

Also, the library you're using might be out of date. The current source (libraries/facebook/facebook.php), lines 186-88 read:

public function __construct($config) {
    $this->setAppId($config['appId']);
    $this->setApiSecret($config['secret']);

Codeigniter 2.0/Facebook Connect - class init problem

2 Answers