Hi all,

I'm having some issues posting a JSON object to my surface controller using ajax. I have checked in my Firebug Net window and the JSON string is posted in the correct format however, when it gets to the method within my surface controller it is effectively interpreted as null. What am I doing wrong here as I have followed one of the examples from the Umbraco documentation almost to the letter yet 'data' always appears to be null when it reaches the GetAvailabilty method.

Javascript

$('#productavailability').click(function () {
        var data = {};
        data.packageCode = $(this).data('id');

        $.ajax({
            url: '/umbraco/surface/product/GetAvailability',
            type: 'POST',
            dataType: 'json',
            data: JSON.stringify(data),
            contentType: 'application/json; charset=utf-8',
            success: function (data) {
                $('#availabilityResult').html(data.Availability);
            }
        })
    });

Surface Controller

public class ProductController : SurfaceController
    {
        // Declare security credentials globally for use with all methods
        Guid guid = new Guid(ConfigurationManager.AppSettings["axumcompanyguid"]);
        String companyName = ConfigurationManager.AppSettings["axumcompanyname"];

        // Setup managed user header
        ManagedUserHeader managedUserHeader = new ManagedUserHeader();

        // Setup compression soap header
        CompressionSoapHeader compressionSoapHeader = new CompressionSoapHeader();

        // Setup Web Service
        TailorMadeWebServiceSoapClient ws = new TailorMadeWebServiceSoapClient();

        [HttpPost]
        public ActionResult GetAvailability(string data)
        {
            Package p = JsonConvert.DeserializeObject<Package>(data);
            int test = p.packageCode;
            managedUserHeader.CompanyName = companyName;
            managedUserHeader.RegistrationKey = guid;
            compressionSoapHeader.CompressionMethodUsed = CompressionMethods.None;

            ProductAvailDataGroup[] ws_availability = null;
            ws_availability = ws.GetProductAvailability(ref compressionSoapHeader, ref managedUserHeader, p.packageCode, DateTime.Today, DateTime.Today.AddDays(28));

            return null;
        }
    }

Any help or pointers would be greatly appreciated.