fb_graph post on a facebook group as a group member from rails app -

currently, i've rails app. if user authenticated facebook can post on application. after post saved, rails app post user's post facebook group. possible?

i'm using fb_graph gem. , after user's post i've done after_create callback post on facebook. here callback code:

def post_story_to_facebook     if self.user.authentications.pluck(:provider).include?('facebook')       page = fbgraph::group.new('ct.dhk.group') # group name        # should declare user posting?        page.feed!(           :message => 'updating via fbgraph',           :link => 'https://domain.tld',           :name => 'pagename',           :description => 'this test post deleted'       )     end   end 

the above method not working , don't know how can post behalf of user?

we had similar working tested code. need store facebook_user_access_token in user model (if don't have one, add new attribute, , update every time user gets authenticated through oauth, or if token renewed). see following.

post = post.find(1) # post facebook_page_id = '1234567890' # facebook group id facebook_user_access_token = current_user.facebook_user_access_token # current user's facebook user access token  page = fbgraph::page.new(facebook_page_id) facebook_page_access_token = page.get_access_token(access_token: facebook_user_access_token)  me = fbgraph::user.me(facebook_page_access_token)  me.feed!(   message: post.title,   link: post_url(post),   description: post.content,   picture: post.main_image.url ) 

update:

haven't tested, looking @ this , this

suggests following work:

group = fbgraph::group.new(group_id) group.feed!({   access_token: user_access_token_with_proper_permissions,   message: post.content }) 

unfortunately, not yet have time test things out. can try if work?