public static Admin getCurrentAdmin() {
   /**
    * get currently logged in admin for Candidate (CandidateController.java) + Office
    * (OfficeController.java) constructors via new logged_in_adminid written to session on admin
    * login
    */
   String adminId = session.get("logged_in_adminid");
   if (adminId == null) {
     return null;
   }
   Admin logged_in_admin = Admin.findById(Long.parseLong(adminId));
   Logger.info("In Admin controller: Logged in admin is " + logged_in_admin.username);
   return logged_in_admin;
 }