Kendo Grid Filterable cell

I have a requirement in which I have to show two dropdown list in the Filterable cell of kendo grid. These two dropdown lists would filter two different columns in the kendo grid.

One thought I had is having template which would be some kendo container like some panel probably, and then add two dropdowns to that container.

Is this even possible? If yes how to achieve this?

Here is my kendo grid definition.

ctrl.mainGridOptions = {
    dataSource: ctrl.gridDataSource,
    columns: [
                {
                    title: 'Col1-Col2',
                    field: 'Col1',
                    width: 200,
                    template: kendo.template($("#col1").html()),
                    filterable: { cell: { template: ctrl.coonetemplate, showOperators: false } }
                },
                {
                    field: 'Col3',
                    width: 150,
                    title: 'Col3',
                    template: kendo.template($("#col3").html()),
                    filterable: { cell: { template: ctrl.colthreeTemplate, showOperators: false } }
                }
         ]
      }

Here is a mockup of what I want to achieve.

There are a few different parts to this.

First, if you want to have multiple filter controls for different pieces of data, you should define a column for each one. Then, put a template on the first column to have it display the data for two columns. Use the attributes option to set a colspan=2. Then, use the attributes option on the second columns to set style="display:none".

The second part is getting the dropdowns. I generally prefer to use the values option to accomplish this. The code below uses this for the OrderID column. The other alternative was the approach you were on, which is to use the cell template. The code below uses this on the ShipName column.

<div id="example">
    <div id="grid"></div>
    <script>
        $(document).ready(function() {
            $("#grid").kendoGrid({
                dataSource: {
                    type: "odata",
                    transport: {
                        read: "http://demos.telerik.com/kendo-ui/service/Northwind.svc/Orders"
                    },
                    schema: {
                        model: {
                            fields: {
                                OrderID: { type: "string" },
                                Freight: { type: "number" },
                                ShipName: { type: "string" },
                                OrderDate: { type: "date" },
                                ShipCity: { type: "string" }
                            }
                        }
                    },
                    pageSize: 20,
                    serverPaging: true,
                    serverFiltering: true,
                },
                height: 550,
                filterable: {
                    mode: "row"
                },
                pageable: true,
                columns: [
                {
                    field: "OrderID",
                    width: 150,
                    attributes: {
                        colspan: 2
                    },
                    values: [
                        {text: "10248", value: "one"},
                        {text:"10249", value: "two"}
                    ],
                    template: '#:OrderID# (#:ShipName#)',
                    filterable: {
                        cell: {
                            operator: "eq",
                            showOperators: false
                        }
                    }
                },
                {
                    attributes: {
                        style: "display:none"
                    },
                    field: "ShipName",
                    width: 200,
                    title: "Ship Name",
                    filterable: {
                        cell: {
                            template: function(args) {
                                args.element.kendoDropDownList({
                                    dataSource: args.dataSource,
                                    dataTextField: "ShipName",
                                    dataValueField: "ShipName",
                                    valuePrimitive: true
                                });
                            },
                            operator: "eq",
                            showOperators: false
                        }
                    }
                },
                {
                    field: "Freight",
                    width: 255,
                    filterable: false
                }]
            });
        });
    </script>
</div>

Runnable Demo