I've tried building the basis of our next app following Facebook's Open Graph Tutorial but for some reason I'm getting errors thrown at me regardless of how I try POSTing an action.
I'll go as in-depth as I can here as I hope it'll be very useful for all developers getting to grips with the new Timeline.
I've defined a battle action and a hero object using the default settings when setting up each. transcendgame is my namespace.
$id is the userid of the Facebook user (I've tried using /me/, the direct id has always been less problematic in the past for me).
$herourl is an urlencoded string pointing to a separate webpage with the following content:
<head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# transcendgame: http://ogp.me/ns/fb/transcendgame#">
<meta property="fb:app_id" content="[my id]">
<meta property="og:type" content="transcendgame:hero">
<meta property="og:url" content="http://apps.facebook.com/transcendgame/">
<meta property="og:title" content="Hercules">
<meta property="og:description" content="As this game is still in development, you can ignore this feed post!">
<meta property="og:image" content="[an image url]">
The application canvas page contains the following code. It should POST a new action event to the user's timeline, but is consistently giving me "Error occured". I have also tried it with the sample hero object (samples.ogp.me...) with the same problem.
<script>
function doTest()
{
FB.api('/<?=$id?>/transcendgame:battle' +
'?hero=<?=$herourl?>','post',
function(response) {
if (!response || response.error) {
alert('Error occured');
} else {
alert('Post was successful! Action ID: ' + response.id);
}
});
}
</script>
<a href="#" onclick="doTest(); return false">Test fb post</a>
I'm calling the JS SDK and running fb.init correctly. I honestly don't know where the problem even lies, let alone how to fix it.
EDIT: I've correctly added the user's access token to the API call:
FB.api('/me/transcendgame:battle' +
'?hero=<?=$herourl?>&access=<?=$token?>','post',
However, I'm getting the following error:
Type: OAuthException
Message: (#3502) Object at URL [url] has og:type of 'game'. The property 'hero' requires an object of og:type 'transcendgame:hero'.
This is odd, as the webpage definitely does have og:type set correctly, as listed earlier in this question. Is this some Facebook hiccup I need to work around?
SECOND EDIT: Fixed the final problem.
The og:url I had assumed to point back to the URL of the app's canvas, but it needs to reference itself instead. For instance, if your object is on mydomain.com/object1.php then the code must be:
<meta property="og:url" content="http://www.mydomain.com/object1.php">
Hope this helps others.
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