Vue - how to bind table column to a data object?

<td data-bind="foreach: Cells">

<!-- ko foreach: Cells -->
 <td data-bind="style:{'background-color':$data}></td>
<!-- /ko -->

$items = \ItemQuery::create()
            ->joinWith('Item.Unit')
            ->withColumn("CONCAT (Unit.Name,'-',Unit.Label)", "MUnit")
            ->find();
        foreach ($items as $i) {
            $i->getUnit()->setVirtualColumn('Asdf', $i->getVirtualColumn('MUnit'));
        }
        dd($items->toJSON());

...

 "Items":[
      {
         "Id":2,
         "Code":"M000002",
         "Name":"Item 1",
         "Price":234,
         "UnitId":1,
         "MUnit":"Kilograms-Kg",
         "Status":true,
         "Unit":{
            "Id":1,
            "Name":"Kilograms",
            "Label":"Kg",
            "Status":true,
            "Asdf":"Kilograms-Kg",// here goes...
         }
      },
       ...

df3 <- merge(df2, df1, all.x = TRUE)
df3$number[is.na(df3$number)] <- 0
df3

#  a number
#1 a      4
#2 b      3
#3 c      2
#4 k      0
#5 z      0

library(dplyr)
df2 %>%
  left_join(df1, by = "a") %>%
  mutate(number = replace(number, is.na(number), 0))

df3 <- df2
df3$number <- df1$number[match(df2$a, df1$a)]
df3$number[is.na(df3$number)] <- 0

df1 <- data.frame(a = c("a", "b", "c"), number=c(4,3,2))
df2 <- data.frame(a = c("a", "b", "c", "k", "z"))

var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
            TestData t = new TestData();
            List<columnsinfo> _col = new List<columnsinfo>();

            DataTable dt = new DataTable();
            dt.Columns.Add("ID", typeof(Int32));
            dt.Columns.Add("Name", typeof(string));

            DataRow dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "Ajay";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr[0] = 2;
            dr[1] = "Sanu";
            dt.Rows.Add(dr);

            for (int i = 0; i <= dt.Columns.Count - 1;i++ )
            {
                _col.Add(new columnsinfo { title = dt.Columns[i].ColumnName, data = dt.Columns[i].ColumnName });
            }

            string col =  (string)serializer.Serialize(_col);
            t.columns = col;


            var lst = dt.AsEnumerable()
            .Select(r => r.Table.Columns.Cast<DataColumn>()
                    .Select(c => new KeyValuePair<string, object>(c.ColumnName, r[c.Ordinal])
                   ).ToDictionary(z => z.Key, z => z.Value)
            ).ToList();

            string data= serializer.Serialize(lst);
            t.data = data;

            return View(t);

@model JQDataTable.Controllers.TestData

@{
    Layout = "";
    ViewBag.Title = "Home Page";
}


<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://cdn.datatables.net/1.10.15/css/dataTables.bootstrap.min.css" rel="stylesheet" />
<link href="https://cdn.datatables.net/responsive/2.1.1/css/responsive.bootstrap.min.css" rel="stylesheet" />

<script src="https://cdn.datatables.net/1.10.15/js/jquery.dataTables.min.js"></script>
<script src="https://cdn.datatables.net/1.10.15/js/dataTables.bootstrap4.min.js "></script>

<div style="display:none;" class="row">
    <div class="form-group">
        @Html.HiddenFor(m => m.columns, new { @id = "dataObjCol", placeholder = Html.DisplayNameFor(m => m.columns), @class = "form-control" })
        @Html.HiddenFor(m => m.data, new { @id = "dataObjData", placeholder = Html.DisplayNameFor(m => m.data), @class = "form-control" })
    </div>
</div>
<hr />

<div class="row">
    <div>
        <table class="table table-striped table-bordered table-hover"
               id="TableId"
               cellspacing="0"
               align="center"
               width="30%" border="1"></table>
    </div>
</div>
<hr />

<script type="text/javascript">
    $(document).ready(function () {
        //debugger;
        alert($('#dataObjCol').val());
        var dataObjCol = JSON.parse($('#dataObjCol').val());
        var dataObjData = JSON.parse($('#dataObjData').val());

        // Datatable settings.
        $('#TableId').DataTable(
        {
            "data": dataObjData,
            "columns": dataObjCol,
            "bPaginate": false,
            "bFilter": false,
            "bInfo": false,
            "autoWidth": false,
            "bSort": false,
            "columnDefs": [
                    {
                        "width": "28px",
                        "targets": "0",
                        "className": "text-right"
                    },
                    {
                        "width": "2px",
                        "targets": "1",
                        "className": "text-right"
                    }
            ]
        });
    });
</script>

public class TestData
    {
        public string jsondata { get; set; }
        public string columns { get; set; }
        public string data { get; set; }
    }

     public class columnsinfo
     {
         public string title { get; set; }
         public string data { get; set; }
     }