title: RequiredAttribute with AllowEmptyString=true in ASP.NET MVC 3 unobtrusive validation
body: <p>If i have <code>[Required(AllowEmptyStrings = true)]</code> declaration in my view model the validation is always triggered on empty inputs. I found <a href="http://www.kevinlabranche.com/blog/CommentView,guid,96448d56-6783-4dcc-a0dd-2a16a6496342.aspx">the article</a> which explains why it happens. Do you know if there is a fix available? If not, how do you handle it?</p>