Is it possible to toggle Validation Data Annotations on/off in MVC 3?

Question

I have two separate VIEWS accessing the same MODEL. When I put the validator data annotations on the model, it works as advertised and prevents the data from being submitte

Answer 1

This isn't possible via the default set of data annotations.. however, you have the choice of using 2 separate view models or writing your own validationAttribute.

I wrote this once.. although I loathed using it..

public class RequiredOnAttribute : ValidationAttribute
{
    public string[] URLs { get; set; }

    public override bool IsValid(object value)
    {
        if (URLs.Contains(System.Web.HttpContext.Current.Request.Url.AbsolutePath))
        {
            if (string.IsNullOrEmpty(value as string))
            {
                return false;
            }
        }
        return true;
    }
}

Usage:

[RequiredOn(URLs = new string[] { "/create", "/edit" })]
public string MyModelField { get; set; }

You could do the same for Range, RegEx, etc..