Is it possible to reference ViewData within a script block in ASP.NET MVC?

Question

I'd like to add a click handler for a button using jQuery, but the handler needs to reference data supplied by the controller. Is there a way to access ViewData in a script block in ASP.NET MVC? Or do I need to construct the script in the controller?

Answer 1

If the script block is within the ASP.NET page then you can reference it...

e.g:

<script type="text/javascript">
 jQuery(document).ready(function() {
  jQuery('#group-edit-form').validate({
   rules: {
    title: {
     required: true,
     remote: '<%=Url.Action("ValidateGroupName", new { id = ViewData["GroupId"] }) %>?parentId=' + getParentId()
    }
   },
   messages: {
    title: {
     required: getMessage (7002),
     remote: '<%= ((MessagingModel)ViewData["Messages"]).GetMessage (9001) %>'
    }
   }
  })

 });
</script>

When the page is processed by the runtime engine, everything within the <% ... %> blocks is evaluated, regardless of it's location in the page.