facebook - trying to get app access token

Question

I tried to get an app-access-token for my facebook app with this code:

APP_ACCESS_TOKEN = FB.api(
    "oauth/access_token",
    {client_id: APP_ID, client_secret: APP_SECRET_CODE, redirect_uri: uri},
    function(response){
    console.log(response);
});

which should be like:

GET https://graph.facebook.com/oauth/access_token?
        client_id=YOUR_APP_ID
       &client_secret=YOUR_APP_SECRET
       &redirect_uri=uri

but i get an error:

code: 1
message: "Missing authorization code"
type: "OAuthException"

What is the authorization code and how can i get it?

Answer 1

Obtaining an App Access Token

To obtain an App Access Token, invoke the following HTTP GET request:

GET https://graph.facebook.com/oauth/access_token?
            client_id=YOUR_APP_ID
           &client_secret=YOUR_APP_SECRET
           &grant_type=client_credentials

The API will respond with a query-string formatted string of the form:

access_token=YOUR_APP_ID|YOUR_APP_ACCESS_TOKEN

Reference: http://developers.facebook.com/docs/opengraph/howtos/publishing-with-app-token/