Since Facebook's Graph API changed to version 2.4, I find that any query attempting to retrieve posts made returns an error:
type: OAuthException, code: 1, message: An unknown error has occurred. [HTTP 500]
My request code uses Facebook's koala ruby api to make requests:
posts = @graph.get_object(appid+"/posts?limit=20",api_version: "v2.3")
I added the version count now, based on koala's recommendation, but the result for this is still the same error that I got without specifying the version. My access token is definitely valid, does anyone know if something else has changed or if this is a bug?
Extending @Tobi 's comment. You have to pass a page/event/user/group id to retrieve the post.
Also, you've to explicitly pass fields parameter to query additional data of a post. So your query will become:
posts = @graph.get_object(id+"/posts?fields=id,name,message,picture&limit=20",api_version: "v2.4")
Please refer to this document of Facebook Developers to learn more about /postsedge.