ASP.NET MVC4中复杂类的验证失败

came across an issue with validation of complex classes in ASP.NET MVC4 using DataAnnotation.

遇到了使用DataAnnotation验证ASP.NET MVC4中的复杂类的问题。

Let's have a following model (simplified)

我们有一个以下模型(简化)

public class Customer
{
   [Required]
   [StringLength(8, MinimumLength = 3)]        
   public string UserName { get; set; }

   [Required]
   [StringLength(8, MinimumLength = 3)]
   public string DisplayName { get; set; }
}


public class Order
{
    public Customer customer { get; set; }
}

Then I try to validate an instance of this model in my controller:

然后我尝试在我的控制器中验证此模型的实例:

// CREATE A DUMMY INSTANCE OF THE MODEL 
Customer cust = new Customer();
cust.UserName = "x";
cust.DisplayName = "x";

Order orderModel = new Order();
orderModel.customer = cust;

// VALIDATE MODEL
TryValidateModel(orderModel); // ModelState.IsValid is TRUE (which is incorrect)
TryValidateModel(cust); // ModelState.IsValid is FALSE (whic is correct}

Validation of orderModel should fail as the cust.UserName has only 1 character, but 3 are required by the Model. Same applies to cust.DisplayName. But when I validate a pure Customer class then it fails as expected.

orderModel的验证应该失败,因为cust.UserName只有1个字符,但Model需要3个字符。同样适用于cust.DisplayName。但是,当我验证纯Customer类时,它会按预期失败。

Any idea what's wrong?

知道什么是错的吗?

thanks

Jiri

1 个解决方案

#1

DataAnnotations won't dig into your objects on it's own. You have two choices:

DataAnnotations不会自己挖掘您的对象。你有两个选择:

1--Write a custom validator to check child properties

1 - 编写自定义验证器以检查子属性

2--Create a view model with populated with the simple properties decorated with data annotations

2 - 创建一个视图模型,其中填充了用数据注释装饰的简单属性

#1