public function addCommentToPost()
 {
     $in = Input::all();
     if (GroupPage::isBelong($in['id'], Auth::user()->StudentID) && GroupPagePost::getGroupPagePostByID($in['pid'])->grouppageID == $in['id']) {
         GroupPagePostComment::create(['grouppagepostID' => $in['pid'], 'StudentID' => Auth::user()->StudentID, 'groupcomment' => $in['message']]);
     }
     return Redirect::to('/')->with('message', 'Comment successsfully posted.')->with('url', '/grouppage/' . $in['id'] . '/post/' . $in['pid'] . '/comment/');
 }