ASP.NET MVC 5，如何在组成其他视图模型的视图模型上启用验证注释? [英] ASP.NET MVC 5, how to enable validation annotation on viewmodel that composes other view models?

问题描述

在我正在构建的社交网络应用程序中，我有一个非常复杂的User Profile系统.配置文件页面上有一些选项卡，用于区分用户配置文件信息的每个类别:基本"，教育"，工作".在所有内容的顶部都有一个UserProfileViewModel，它由内部视图模型(例如BasicViewModel，EducationViewModel和JobViewModel)组成.考虑以下结构:

Well I have a very complex User Profile system in a social network application I am building. The profile page has tabs that distinguishes each category of user profile information: Basic, Education, Job. There is a UserProfileViewModel sitting on top of everything, which composes of inner view models such as BasicViewModel, EducationViewModel and JobViewModel. Consider the structure as below:

    public class ProfileViewModel
{
    public string id { get; set; }
    public BasicViewModel basic { get; set; }
    public EducationViewModel education { get; set; }
    public JobViewModel job { get; set; }
}

public class BasicViewModel
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public DateTime? DateOfRegistration { get; set; }
    public DateTime? DateOfBirth { get; set; }
    public string Gender { get; set; }
    public string PhoneNumber { get; set; }
    [Display(Name = "Biography")]
    public string Biography { get; set; }
    public string NickName { get; set; }
    public string FavoriteQuotes { get; set; }
}

public class EducationViewModel{
    public string EducationStatus { get; set; }
    public List<University> Universities { get; set; }
    public string CourseStatus { get; set; }
    public string CourseSpecialization { get; set; }
    public List<string> EducationEvents { get; set; }
}

public class JobViewModel
{
    public string WorkStatus { get; set; }
    public List<Company> Companies { get; set; }
}

public abstract class Organization
{
    public string Name { get; set; }
    public DateTime? Year { get; set; }
    public int TimePeiod { get; set; }
}

public class University: Organization
{
    public string Degree { get; set; }
    public string Profession { get; set; }
}

public class Company: Organization
{
    public string Website { get; set; }
    public string Position { get; set; }
}

问题是，用于模型验证的数据注释(服务器端和客户端)是否适用于具有这种复合结构的模型?如果是这样，我是否像通常使用简单视图模型一样放置注释?如果没有，我如何以其他方式实现这一目标?请帮忙.

So the question is, does data annotation for model validation(both server and client side) work for a model that has composite structure like this? If so, do I just place annotation like I usually do with simple view models? If not, how can I achieve this in alternative ways? Please help.

推荐答案

任何单个视图模型都可能包含其他这样的视图模型:

Any single view model may contain other viewmodels like this:

此模型是服务器端的

[Serializable]
public class MyBigViewModel : IValidatableObject 
    {
       public MyBigViewModel(){
          MyOtherViewModel = new MyOtherViewModel();
          MyThirdViewModel = new MyThirdViewModel();
      }
      public MyOtherViewModel {get;set;}
      public MyThiddViewModel {get;set;} 

    public void Post(){
           //you can do something here based on post back 
           //like maybe this where the post method here processes new data
           MyOtherViewModel.Post();

    }

}

控制器看起来像这样:

  public ActionResult UserList (MyBigViewModel uvm){
      if(ModelState.IsValid){
         uvm.Post();
         return View(uvm);

      }
    return View(uvm);
  }

您可以实现IValidateableObject进行服务器端"验证.但是，在上面的示例中，我们希望每个视图模型包含"它自己的模型以进行验证.

You can implement the IValidateableObject to do "server side" validation. In the example above however, we want each viewmodel to "contain" it's own model for validation.

每个viewmodel属性只能在该viewmodel中使用包含"的数据注释.这是在所需位置包含"所需内容的一种非常不错的方法.

Each viewmodel property can use data annotations "contained" in only that viewmodel. It's a very nice way to "Contain" what you want where you want.

我经常在主VM中使用多个Viewmodel，并根据需要将它们与部分视图一起传递.

I very often use multiple Viewmodels in main VM and pass them in with partial views as needed.

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