CODEWITHSUNDEEP
phpfacebook
Ross McFarlane
Ross McFarlane

Reputation: 4254

Facebook Canvas App — How can I insist on extended permissions?

I'm making a canvas-based app for Facebook, which requires publish_stream permissions.

At the moment, I'm checking the extended permissions in Javascript, and requesting additional permissions if necessary. However, if the user denies the request, I'm left in a funny situation where the user can see the app, but can't do anything.

I notice that lots of games have blocking dialogs on the page (not in popups) which have 'Allow' and 'Leave Application' buttons. I'd like to do something similar, to prevent users without extended permissions from entering the application.

Any idea how this is done? I'm generating the canvas page in PHP.

Thanks in advance, Ross

Upvotes: 0

Views: 870

Answers (1)

BeRecursive
BeRecursive

Reputation: 6376

You need to redirect the user to:

http://www.facebook.com/connect/uiserver.php
?app_id=APPID
&next=RETURNURL
&cancel_url=CANCELURL
&perms=publish_stream
&fbconnect=0
&canvas=1

Use the javascript redirect via:

<div id="fb-root"></div>
<script src="http://connect.facebook.net/en_US/all.js"></script>
<script>
  FB.init({appId: 'your app id', status: true, cookie: true, xfbml: true});
  FB.Event.subscribe('auth.sessionChange', function(response) {
    if (response.session) {
      // A user has logged in, and a new cookie has been saved
    } else {
      top.location = "THE ABOVE URL"
    }
  });
</script>

Upvotes: 1

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