Treeview child nodes not working

[Kabelo]

I have two classes Category and Product and I want to expend products when users click a category node on the treeview.

My View is as follows:

    <h2>Index</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<div class="row">
    <div class="col-md-3">
        <label class="k-label-top">TreeView</label>
        @(Html.Kendo().TreeView().Name("treeview")
        .DataSource(datasource => datasource
                            .Read(read => read.Action("Categories", "Categories"))
            ).DataTextField("Name")
        )
    </div>
    
</div>

 

Controller

        public ActionResult Categories(int? id)
        {
            var model = db.Categories
                .Where(p => p.Id == id.Value || p.Id == null)
                .Select(p => new {
                    id = p.Id,
                    Name = p.Name,
                    hasChildren = p.Products.Any()
                });
            return this.Json(model, JsonRequestBehavior.AllowGet);
        }

Categories Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace EmployeeTreeView.Models
{
    public class Category
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public virtual ICollection<Product> Products { get; set; }
    }
}

 

Products Class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace EmployeeTreeView.Models
{
    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public virtual Category Category { get; set; }
        public int CategoryId { get; set; }
    }
}

 When I remove the where clause in the controller the parent node just loops over and over again, but no child nodes are displayed.

[Kabelo]

This question has been answer if you have a similar question checkout the answer first on stack overflow on this link. http://stackoverflow.com/questions/33259165/adding-parent-and-child-to-kendo-ui-controller-using-mvc-5/33260819#33260819