Attaching validation to EF objects used in MVC controllers/views?

Question

We\'re throwing together a quick project (CRUD forms) and decided to skip view models and use EF entities directly in controllers and views. Since I\'m not used to this approach

Answer 1

You need to use a partial 'buddy' meta class and decorate it with validation attributes.

For example, say your entity was 'Foo':

[MetadataType(typeof(FooMetadata))]
public partial class Foo {}

public class FooMetadata
{
    //apply validation attributes to properties
    [Required]
    [Range(0, 25)]
    [DisplayName("Some Neato Property")]
    public int SomeProperty { get; set; }
}

For more information see this link on MSDN:

Customize Data Field Validation in the Model

Cheers.