Support for nested model and class validation with ASP.NET MVC 2.0
- by Diep-Vriezer
I'm trying to validate a model containing other objects with validation rules using the System.ComponentModel.DataAnnotations attributes was hoping the default MVC implementation would suffice:
var obj = js.Deserialize(json, objectInfo.ObjectType);
if(!TryValidateModel(obj))
{
// Handle failed model validation.
}
The object is composed of primitive types but also contains other classes which also use DataAnnotications. Like so:
public class Entry
{
[Required]
public Person Subscriber { get; set; }
[Required]
public String Company { get; set; }
}
public class Person
{
public String FirstName { get; set;}
[Required]
public String Surname { get; set; }
}
The problem is that the ASP.NET MVC validation only goes down 1 level and only evaluates the properties of the top level class, as can be read on digitallycreated.net/Blog/54/deep-inside-asp.net-mvc-2-model-metadata-and-validation.
Does anyone know an elegant solution to this? I've tried xVal, but they seem to use a non-recursive pattern (http://blog.stevensanderson.com/2009/01/10/xval-a-validation-framework-for-aspnet-mvc/).
Someone must have run into this problem before right? Nesting objects in your model doesn't seem so weird if you're designing a web service.
