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facebookexceptioncommentsfacebook-social-plugins

Exception: 100 using Comment Facebook social plugin in a Facebook application (response code : 206)

I'm using the Comment social plugin in a facebook application using the code below

<div class="fb-comments" data-href="<?php echo $fbconfig['appBaseUrl']; ?>" data-num-posts="20" data-width="480"></div>

Where $fbconfig['appBaseUrl'] is my facebook app url (http://apps.facebook.com/[appname])

When users post a comment, the comment shows on the time line with his comment but also with this exception :

"Uncaught Exception: 100: null does not resolve to a valid user ID"

I've tried using the open graph debugger but no more information is provided, except for the 206 response code

http://developers.facebook.com/tools/debug/og/object?q=apps.facebook.com%2Fmesresolutions

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<br><b>Fatal error</b>
</head>
<body><p>:  Uncaught Exception: 100: null does not resolve to a valid user ID
  thrown in <b>/home/kastelni/www/facebook/mesresolutions/fb/base_facebook.php</b> on line <b>708</b><br></p></body>
</html>

Do you know what's wrong with my app or with the plugin ? Need some help ;)

Thank you for your help ! Yann

Solution

  • Found the solution.

    I was testing if the current user was a fan of my application. But it is not possible to do so if this is the first connection a a user.

    For those who are interrested in a piece of code:

    $user       = $facebook->getUser();
$loginUrl   = $facebook->getLoginUrl(
        array(
            //'scope'         => 'email,publish_stream,user_birthday,user_location,user_work_history,user_about_me,user_hometown'
            'scope'         => 'user_about_me'
        )
);

if ($user) {
  try {
    // Proceed knowing you have a logged in user who's authenticated.
    $user_profile = $facebook->api('/me');
    $user_perm = $facebook->api('/me/permissions');
  } catch (FacebookApiException $e) {
    //you should use error_log($e); instead of printing the info on browser
    //d($e);  // d is a debug function defined at the end of this file
    $user = null;
  }
}

try
{
    if(isset($user_profile['id']))
    {
        //Est-ce que l'utilisateur est FAN
        $isFan = $facebook->api(array(
            "method"    => "pages.isFan",
            "page_id"   => $fbconfig['pageId'],
            "uid"       => $user_profile['id']
        ));
    }
    else
        $isFan = 0;
}   
catch(Exception $o){
    $isFan = 0;
}