How to get invited users ID from response object FB.ui - ruby-on-rails-3

Question

I am using the new FB.ui to create an request to friends on Facebook for my application.
The user is show a panel with their friends and they select the ones they want to send the request.
On the callback I can access the request_id and now I want to get the details for the users that were invited.
If I paste the following code in the browser I can get the user_id of the invited user which is the info I want:
https://graph.facebook.com/138744992885393?access_token=193078857407882|d0048a9beb58a9a247c6b987.0-751640040|zNmBLfZxBBKikoj8RlZiHfKpugM
What I want to be able to do is do the same thing but from my code and then access the information returned.
Here is my code:
function sendRequests() {
FB.ui({
method: 'apprequests',
message: ' should learn more about this awesome site.',
data: 'extra data'
}, function(response) {
if (response != null && response.request_ids && response.request_ids.length > 0) {
for (var i = 0; i < response.request_ids.length; i++) {
alert("Invited: " + response.request_ids[i]);
// somehow send a request to Facebook api to get the invited user id from the request_id and save to the database
//can save these id's in the database to be used to track the user to the correct page in application.
}
top.location.href="http://localhost:3000/";
} else {
alert('No invitations sent');
}
});
}
How can I do this?
I am using Rails 3.0.7 Ruby 1.9.2

Answer 1

You can get the facebook user ID as follows:
for (var i = 0; i < req_ids.length; i++) {
alert("Invited: " + req_ids[i]);
FB.api('/me/apprequests/?request_ids='+toString(req_ids[i]),
function(response)
{ alert(response);
alert(response['data'][0]['from']['id']);
});
}
Thanks very much to this post on stackoverflow

Answer 2

You can also get the facebook IDs and even names of selected friends using below code:
FB.ui( {
method: 'apprequests',
redirect_uri: 'YOUR APP URL',
message: "Tom sent you a request"
},
function(response) {
if(response && response.hasOwnProperty('to')) {
for(i = 0; i < response.to.length; i++) {
//alert( response.to[i]);
// response.to[i] gives the selected facebook friends ID
// To get name of selected friends call this function below
getfbnames(response.to[i]);
}
}
}
);
function getfbnames(selectedfrndid)
{
var url = 'getfriendfbname.php'; // call a php file through URL and jquery ajax
$.ajax({
type:'POST',
url: url,
data : { fbid : selectedfrndid },
async: false,
success: function(data)
{
alert(data);
}
}); // end of ajax
}
A file getfriendfbname.php which returns the name of facebook friend name using friend facebook id in php
$fbid=$_POST['fbid'];
$json = file_get_contents('https://graph.facebook.com/'.$fbid);
$data = json_decode($json);
echo $data->name;
return $data->name;

Answer 3

If that's the user_id of the invited users, you can have them in your callback, in response.request_ids. But you seem to already know that.
Could you clarify your problem?