public override string[] GetRolesForUser(string username)
        {
            FoodOrderingMSModel models = new FoodOrderingMSModel();

            var user       = models.users.FirstOrDefault(x => x.username == username);
            var restaurant = models.restaurants.FirstOrDefault(x => x.username == username);

            if (user != null)
            {
                return(new string[] { user.role.role_name });
            }
            else
            {
                return(new string[] { restaurant.role.role_name });
            }
        }