Getting the Access Token from a Facebook Open Graph response in Ruby
- by Gearóid
Hi,
I'm trying to implement single sign-on using facebook in my ruby sinatra app. So far, I've been following this tutorial:
http://jaywiggins.com/2010/05/facebook-oauth-with-sinatra/
I am able to send a request for a user to connect to my application but I'm having trouble actually "getting" the access token. The user can connect without trouble and I receive a response with the "code" parameter, which I'm supposed to use to exchange an Access Token - but its here where I get stuck.
So I submit a url with the following parameters:
https://graph.facebook.com/oauth/access_token/{client_id}&{client_secret}&{code}&{redirect_uri}
The words in the curly brackets above are obviously replaced by the values.
I submit this using the following code:
response = open(url)
This doesn't seem to return anything of use in the way of an access token (it has a @base_uri which is the url I submitted above and few other parameters, though nothing useful looking). However, if I take that url I submitted and paste it into a browser, I receive back an access token.
Can anyone tell me how I can get the request back from facebook and pull out the access token?
Thanks.
