private function _getUserSyllabaryRole($user_id, $syllabary_id)
 {
     $project = Project::where('syllabary_id', '=', $syllabary_id)->first();
     if ($project == NULL) {
         return -1;
     }
     $membership = ProjectMembers::where('project_id', '=', $project->project_id)->where('user_id', '=', $user_id)->first();
     if ($membership == NULL) {
         return -1;
     }
     return $membership->access;
 }
 public function ChangeRole($project, $user, $role)
 {
     $entry = ProjectMembers::where('project_id', '=', $project)->where('user_id', '=', $user)->firstOrFail();
     $entry['access'] = $role;
     $entry->save();
 }