public IHttpActionResult AddListing(WorkgroupModel model)
 {
     try
     {
         model.Users = new List <UserModel>();
         model.Users.Add(new UserModel
         {
             Username = User.Identity.GetUserName()
         });
         _service.AddWorkgroup(model);
         return(Ok());
     }
     catch (Exception e)
     {
         Console.WriteLine(e);
     }
     return(InternalServerError());
 }