Check advanced permissions with the new javascript sdk facebook

Question

is there any way to check my application (canvas) if the user has extended permission (e.g. stream.publish)?

i can find a solution for the old sdk.

thank!

Answer 1

Update at the end of 2011:

FB.api('/me/permissions', function (response) { console.log(response); } ); 

console output:

 { data: [ { create_note: 1, installed: 1, photo_upload: 1, publish_stream: 1, share_item: 1, status_update: 1, video_upload: 1, } ] } 

Answer 2

this decision is outdated at the end of 2011, please use the answer marked as accepted above

found a solution on my own

 function check_ext_perm(session,callback) { var query = FB.Data.query('select publish_stream,read_stream from permissions where uid={0}', session["uid"]); query.wait(function(rows) { if(rows[0].publish_stream == 1 && rows[0].read_stream == 1) { callback(true); } else { callback(false); } }); }; 

this will check for publish_stream and read_stream

usage example:

 check_ext_perm(response.session, function(isworking) { if(isworking) { // post something to wall } else { // ask for login } }); 

Answer 3

 FB.ui({ method: 'permissions.request', perms: 'user_website', display: 'popup' },function(response) { alert(response.toSource()); if (response && response.perms) { alert('Permissions granted: '+response.perms); } else if (!response.perms){ alert('User did not authorize permission(s).'); } }); 

Answer 4

Generalized selection function,

 function check_permissions (permissions, uid, cb) { FB.Data .query('select {0} from permissions where uid={1}', permissions, uid) .wait(function (res) { if (!res || res.length < 1) return cb(false); var row = res[0]; var aperm = permissions.split(','); for (var i = 0; i < aperm.length; i++) { if (row[aperm[i]] != 1) return cb(false); } return cb(true); }); } 

Calls a callback with true if the user has all permissions, otherwise it calls a callback with false.

Answer 5

Answers that use FB.Data.query should be avoided as this paragraph, since Facebook is completely out of date with FB.Data.query . The FB.api solution (/ me / permissions ...) seems the best.

Answer 6

You can also get permissions from FB.login:

 FB.login(function(response) { // handle the response }, { scope: 'publish_actions', return_scopes: true }); 

See https://developers.facebook.com/docs/reference/javascript/FB.login/v2.1#options