Adding Facebook Application to a page through API with permissions

Question

How to add an application to a page(which I have created) through API with Publish_stream permissions?

Here is the Sequence of things I have tried sofar using app. Adding App to a page using page access token code is adding app to page apps section but unable to add "publish_stream,manage_pages" permission.

For log in to Facebook

private const string Scope = "publish_stream,manage_pages";
   FacebookClient _fb = new FacebookClient();
   var fbLoginUrl = _fb.GetLoginUrl(
                new
                {
                    client_id = AppId,
                    client_secret = Appsecret,
                    redirect_uri = RedirectUri,
                    response_type = "code",
                    scope = Scope,
                    state = state
                });

To get short lived access token

if (Request.QueryString["code"] != null)
            code = Request.QueryString["code"];
           var result = _fb.Post("oauth/access_token",
                                  new
                                  {
                                      client_id = AppId,
                                      client_secret = Appsecret,
                                      redirect_uri = RedirectUri,
                                      code = code,
                                      scope = Scope,
                                      response_type="token"
                                  });

To get long lived access token

var result1 = _fb.Post("oauth/access_token", new { client_id = AppId, client_secret = Appsecret, grant_type = "fb_exchange_token", fb_exchange_token= Session["fb_access_token"] as string });

To get Page access Token

dynamic accounts = _fb.Get("me/accounts");

Add App to a Page using Page Access Token

var sResult = _fb.Post("<PAGE-ID>/tabs",
                                                    new
                                                    {
                                                        app_id = AppId,
                                                        access_token = <PAGE ACCESS TOKEN>,
                                                        scope = Scope
                                                    });

What was the error message when you POSTed to /{page}/tabs ? that's the correct method of adding a tab and it seems like your code sample is correct — Igy
Well, Once the app is added to a page, Using APP Access Token I want to post a message to page feed, I get an exception:(OAuthException - #200) (#200) The user hasn't authorized the application to perform this action — user1401299
You can't use the app access token to post to a page - apps can't post in their own right - to post as the page you need the page access token you retrieved from the page admin — Igy
Well, I was successfully posted to a page once i get Page_Access_Token. But I am building an app for several department users who post messages to these pages. They do not want to log-in. Documentation says app can act on behalf of user if permission given. The above mentioned code did add app to user settings and granted permissions. But I want to app to be added to different pages which I am administering. This way app can post content. — user1401299

Igy Igy · Accepted Answer · 2012-08-14T00:36:48

It seems from your comments you're trying to post 'as' the app onto a page - this is not possible. You need to post using a page access token retrieved from an admin of the page, and this page access token allows you to make posts on behalf of the page. Apps cannot post 'as themselves'.

Adding Facebook Application to a page through API with permissions

1 Answers