Nested Collection Postback with ASP.NET MVC Framework

Building.cshtml

@model CollectionPostback.Models.Building
@using (Html.BeginForm("Post", "Home"))
{
    <fieldset>
        <legend>Building</legend>
        @Html.TextBoxFor(m => m.Name)
        <ul class="collection" data-name="Floors">
            @foreach (var floor in Model.Floors)
            {
                @Html.Partial("Floor", floor)
            }
        </ul>
    </fieldset>
    <input type="submit" />
}

<script>
    $("form").submit(function () {
        $(".collection").each(function (index, element) {
            var collection = $(element);
            collection
                .attr("data-name", function(i, oldVal) {
                    var closest = collection.closest(".collection-item").attr("data-name");
                    return (closest ? closest + "." : "") + oldVal;
                })
                .find(".collection-item:not([data-name])").not(".collection-item:not([data-name]) .collection-item:not([data-name])")
                    .attr("data-name", function (i) {
                        return collection.attr("data-name") + "[" + i + "]";
                    });
        });
        $(".collection-item input").each(function (index, element) {
            var colItem = $(element);
            var colItemName = colItem.closest(".collection-item").attr("data-name") + "." + colItem.attr("Name");
            colItem
                .attr("Name", colItemName)
                .attr("Id", colItemName.replace(/[\[.\]]/g, "_"));
        });
    });
</script>

Floor.cshtml

@model CollectionPostback.Models.Floor
<li class="collection-item">
    <fieldset>
        <legend>Floor</legend>
        @Html.EditorFor(m => m.Order)
        <ul class="collection" data-name="Spaces">
            @foreach (var space in Model.Spaces)
            {
                @Html.Partial("Space", space)
            }
        </ul>
    </fieldset>
</li>

Space.cshtml

@model CollectionPostback.Models.Space
<li class="collection-item">
    <fieldset>
        <legend>Space</legend>
        @Html.TextBoxFor(m => m.Name)
    </fieldset>
</li>