I've been Googling for an answer for several days now, but most of the solution to similar questions seem to use the deprecated REST-API.
I'm trying to create an event on behalf of a group where I'm the owner, using the Facebook Graph API in PHP. I can publish an event to my own wall and even to a page using a page specific access-token, but since the group doesn't have any access-token I'm using this:
https://graph.facebook.com/{$group_id}/events?" . {$user_access_token};
But something is going wrong and the event gets published only with me as the Owner. My permissions are: "stream_publish, user_groups, create_event, manage_pages"
Any Ideas?
You need to add the undocumented: page_id={$group_id} parameter to your post.
(as well as posting to the groups event stream)