asp.net-mvc-4 – 如何让你的MVC控制器DRY为Edit-> Save->

我的“管理”页面有一些依赖项 – 例如,PageTitle,要提交的方法等.

如果我验证失败,我需要再次显示管理屏幕,但这一次,使用传递到同一方法的视图模型.

在失败场景中提供这些依赖关系并不是很干.

如何重复依赖关系？我尝试将它们放入一个单独的方法中,但这感觉不对.

public ActionResult Manage(Guid? UserID)
    {
        User user = this._UserLogic.GetUser(UserID);

        ViewBag.Title = "User List";
        ViewBag.OnSubmit = "Save";
        ManageUserViewModel uvm = Mapper.Map<User,ManageUserViewModel>(user);

        return View("Manage",uvm);
    }


    [AcceptVerbs("POST")]
    public ActionResult Save(ManageUserViewModel uvm)
    {
        User user = this._UserLogic.GetUser(uvm.UserID);


        if (!ModelState.IsValid)

            // This is not very DRY!!!
            ViewBag.Title = "Manage User";
            ViewBag.OnSubmit = "Save";
            return View("Manage",uvm);
        }

        Mapper.Map<ManageUserViewModel,User>(uvm,user );

        this._UserLogic.SaveUser(user);

        return RedirectToAction("Manage",new { UserID = user.ID });

    }