asp.net mvc dynamic validation depending on action

Question

I have a view model like so:

public class AccountView {
  public int AccountId { get; set; }
  [Required]
  public string AccountName { get; set; }
}

But I would like the AccountName field to be required only if the action is "Edit", but not "Create". How is this accomplished in asp.net mvc3?

thanks.

s0nica · Accepted Answer · 2012-02-17 10:36:25Z

1

Or you could simply have two different ViewModels: one for the Edit action and one for the Create action. I don't think it's a bad practice even if you duplicate code (not all obviously), as a ViewModel should be tied to the View it's modeling.

answered Feb 17, 2012 at 10:36

s0nica

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user480184 · Accepted Answer · 2012-02-16 19:58:13Z

0

You can implement a custom validator. Once inside the Validate method you will have access to properties like, (((System.Web.Mvc.ModelValidator)(this))).ControllerContext.Controller where you can look into the ContollerContext, ViewData, etc. You also have access to properties like

(((System.Web.Mvc.ModelValidator)(this))).ControllerContext.RequestContext
(((System.Web.Mvc.ModelValidator)(this))).ControllerContext.HttpContext
(((System.Web.Mvc.ModelValidator)(this))).ControllerContext.RouteData

answered Feb 16, 2012 at 19:58

user480184

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