Question

I am using MVC4 and C#.
I have a KendoUI Treeview and I’d like to populate it with data from RavenDB.

In the demo they use this:

public JsonResult Employees(int? id)
    {
        var dataContext = new NorthwindDataContext();

        var employees = from e in dataContext.Employees
                        where (id.HasValue ? e.ReportsTo == id : e.ReportsTo == null)
                        select new {
                            id = e.EmployeeID,
                            Name = e.FirstName + " " + e.LastName,
                            hasChildren = e.Employees.Any()
                        };

        return Json(employees, JsonRequestBehavior.AllowGet);
}

Notice the argument “id” – it’s an int. In RavenDb document ID’s are strings eg. myDco/231…

Imagine this is a standard document:

{
  "CreationDate": "12/12/2012 8:07:59 PM",
  "Name": "jkljklk",
  "Type": "kljkljkljkljkl",
  "Description": "ljkljklj",
  "CreatedByUser": "ljklklkljklj",
  "Deleted": false,
  "Status": "NEW",
  "Parent": "product/546"
}

How would I populate the treeview?

Answer 1

I figured this out.

I changed my RavenDB Document to include a list of all its children:

{
  "CreationDate": "12/12/2012 9:33:34 PM",
  "Name": "hohoho",
  "Type": "hohohoh",
  "Description": "hohohoh",
  "CreatedByUser": "hohohoh",
  "Deleted": false,
  "Status": "NEW",
  "Parent": "ohohohoh",
  "Children": [
  "item/1",
  "item/2",
  "item/3"
  ]
}

I then returned a list of my items to the View via the controller and then iterated through them, appending all the children to their correct parent nodes:

@(Html.Kendo().TreeView().Name("TreeView").DragAndDrop(true)
.Items(treeview =>
           {
               foreach (var myItem in Model)
               {
                   var myItemName = myItem.Name;
                   var children = myItem.Children;
                   treeview.Add().Text(myItemName ).Expanded(false).Items(branch =>
                                                                             {
                                                                                  if (children != null)
                                                                                     {
                                                                                         foreach (var child in children)
                                                                                         {
                                                                                             branch.Add().Text(child);
                                                                                         }
                                                                                     }
                                                                             });
               }
           }
   ))

Anyway, thanks for the responses 🙂

Hope this helps someone else one day.