title: IValidatableObject in MVC3 - client side validation
body: <p>With MVC3 you have two new mechanisms for adding custom validation. These are (1) subclass ValidationAttribute or (2) implement IValidatableObject.</p>
  
  <p>The ValidationAttribute allows you to add client side validation relatively simply by implementing IClientValidatable (and registering a new adapter and method via jQuery).</p>
  
  <p>IValidatableObject is more suited to one-off validation requirements where reuse is not an option. It also results in slighlty simpler code. It would therefore be my choice for a number of scenarios. Unfortunately, I do not see an easy way of implementing client side validation using this method.</p>
  
  <p>So the question is what am I missing and how DO you get JS validation when using IValidatableObject?</p>