MVC5 Claims version of the Authorize attribute

I ended up just writing a simple attribute to handle it. I couldn’t find anything in the framework right out of the box without a bunch of extra config. Listed below.

public class ClaimsAuthorizeAttribute : AuthorizeAttribute
{
    private string claimType;
    private string claimValue;
    public ClaimsAuthorizeAttribute(string type, string value)
    {
        this.claimType = type;
        this.claimValue = value;
    }
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        var user = filterContext.HttpContext.User as ClaimsPrincipal;
        if (user != null && user.HasClaim(claimType, claimValue))
        {
            base.OnAuthorization(filterContext);
        }
        else
        {
            base.HandleUnauthorizedRequest(filterContext);
        }
    }
}

Of course, you could remove the type and value params if you were happy to use the controller-action-verb triplet for claims somehow.