Uploading an image to a specific Facebook Album - php

Question

I am having trouble using permissions to upload to a specific Facebook album.
I am set to an admin to a specific Facebook page, however whenever I try to upload a photo I cannot seem to get access to do it.
The error I get is:
Fatal error: Uncaught OAuthException: (#120) Invalid album id thrown
If I explore using the Graph explorer, I can see this album without any access token required.
The URL I am using is https://graph.facebook.com/albumId/photos
The album I am trying to upload is an album within a Facebook page, which I created within Facebook.
The permissions I have set are:
user_photos
friends_photos
publish_actions
manage_pages
publish_stream
photo_upload
Any help appreciated.

Answer 1

First, check if the user is logged in:
function getLoginStatus() {
FB.getLoginStatus(function (response) {
if (response.status === 'connected') {
// the user is logged in and connected to your
// app, and response.authResponse supplies
// the user's ID, a valid access token, a signed
// request, and the time the access token
// and signed request each expire
var uid = response.authResponse.userID;
var accessToken = response.authResponse.accessToken;
getPageAccess();
} else if (response.status === 'not_authorized') {
// the user is logged in to Facebook,
//but not connected to the app
logIn();
} else {
// the user isn't even logged in to Facebook.
logIn();
}
});
}
Then get the page access token associated to the user:
function getPageAccess() {
FB.api('/PAGE_ID?fields=access_token', function (resp) {
var pageAccessToken = resp.access_token;
});
}

Answer 2

This seems a common issue. If you want to impersonate Facebook Page (that is, act as page itself for uploading, posting and sharing) you have to first obtain an access token for that page:
Issue a GET Request to '/me/accounts' using user access token
Loop the result set and look for the page (pay attention to category property of each item, skip "application" as it's considered an account)
Store access token for that page.
Then (using PHP SDK):
$page = '432652662'; // Your page id
$album = '128949205'; // Your album id
$source = 'mypic.png';
$payload = array('source' => '#' . $source,
'access_token' => 'page access token');
// Upload photo for specific page and album
$sdk->api("/$page/$album/photos", 'POST', $payload);

Answer 3

Ok, I think I have found the solution.
If you go to https://graph.facebook.com/me/accounts
Each account will have its own access_token. When uploading an image to a Facebook page, you will need to pass that access_token as a parameter.