Kendo Grid filter to use combo box with column.values rather than drop down list

Question

I'm trying to get Kendo's Grid to show a filter using a combo box rather than a drop down list when used with values. What I mean is, on the grid columns array, each column can be given a list of values (objects with text and value properties) for each possible entry in the database, thereby rather than showing a code, it shows a recognisable name or text instead of the code. The problem is that whenever I specify values against the column, the filter reverts to a fixed list of criteria and a drop-down list, which I don't want.

See an example of what I mean here. What I'd like to see is the filter (on the Category column) to show a combo-box rather than a drop down list, but still use the values against the codes in the table to show in the data in the grid, but it doesn't seem to work.

Answer 1

As you say it doesn't work with the values property, so one approach would be to set up a custom row template and use a lookup function on category ID and replace it with the corresponding text:

var categories = [{
  "value": 1,
  "text": "Beverages"
}, {
  "value": 2,
  "text": "Condiments"
}, {
  "value": 3,
  "text": "Confections"
}, {
  "value": 4,
  "text": "Dairy Products"
}, {
  "value": 5,
  "text": "Grains/Cereals"
}, {
  "value": 6,
  "text": "Meat/Poultry"
}, {
  "value": 7,
  "text": "Produce"
}, {
  "value": 8,
  "text": "Seafood"
}];

function getCategory(catID) {
  return $.grep(categories, function(n, i) {
    return n.value === catID;
  })[0].text;
}

$(document).ready(function() {
  var dataSource = new kendo.data.DataSource({
    pageSize: 20,
    data: products,
    autoSync: true,
    schema: {
      model: {
        id: "ProductID",
        fields: {
          ProductID: {
            editable: false,
            nullable: true
          },
          ProductName: {
            validation: {
              required: true
            }
          },
          CategoryID: {
            field: "CategoryID",
            type: "number",
            defaultValue: 1
          },
          UnitPrice: {
            type: "number",
            validation: {
              required: true,
              min: 1
            }
          }
        }
      }
    }
  });

  var rowTemplateString = '<tr data-uid="#: uid #">' +
    '<td>#: ProductName #</td>' +
    '<td>#: getCategory(CategoryID) #</td>' +
    '<td>#: UnitPrice #</td>' + '<td></td>' +
    '</tr>';

  var altRowTemplateString = rowTemplateString.replace('tr class="', 'tr class="k-alt ');

  var commonSettings = {
    dataSource: dataSource,
    filterable: true,
    groupable: true,
    pageable: true,
    height: 430,
    toolbar: ["create"],
    columns: [{
        field: "ProductName",
        title: "Product Name"
      },
      {
        field: "CategoryID",
        width: "150px",
        //values: categories,
        dataTextField: "text",
        dataValueField: "value",
        dataSource: categories,
        filterable: {
          ui: function(element) {
            element.kendoComboBox({
              dataTextField: "text",
              dataValueField: "value",
              dataSource: categories
            });
          }
        },
        title: "Category"
      },
      {
        field: "UnitPrice",
        title: "Unit Price",
        format: "{0:c}",
        width: "150px"
      },
      {
        command: "destroy",
        title: " ",
        width: "110px"
      }
    ],
    editable: true
  };

  $("#grid").kendoGrid($.extend({
    rowTemplate: rowTemplateString,
    altRowTemplate: altRowTemplateString
  }, commonSettings));

});

Note: In this demo I haven't tried to handle the template for the Delete column. I just left it blank.

Here's the Dojo http://dojo.telerik.com/oFulu

Answer 2

Try this One,According to your demo here

</script>
    <div id="example" class="k-content">
        <div id="grid"></div>

        <script>               
            var categories = [{
                "value": 1,
                "text": "Beverages"
            },{
                "value": 2,
                "text": "Condiments"
            },{
                "value": 3,
                "text": "Confections"
            },{
                "value": 4,
                "text": "Dairy Products"
            },{
                "value": 5,
                "text": "Grains/Cereals"
            },{
                "value": 6,
                "text": "Meat/Poultry"
            },{
                "value": 7,
                "text": "Produce"
            },{
                "value": 8,
                "text": "Seafood"
            }];

            $(document).ready(function () {
                var dataSource = new kendo.data.DataSource({
                    pageSize: 20,
                    data: products,
                    autoSync: true,
                    schema: {
                        model: {
                            id: "ProductID",
                            fields: {
                                ProductID: { editable: false, nullable: true },
                                ProductName: { validation: { required: true} },
                                CategoryID: { field: "CategoryID", type: "number", defaultValue: 1 },
                                UnitPrice: { type: "number", validation: { required: true, min: 1} }
                            }
                        }
                    }
                });

                $("#grid").kendoGrid({
                    dataSource: dataSource,
                    filterable: true,
                    groupable: true,
                    pageable: true,
                    height: 430,
                    toolbar: ["create"],
                    columns: [
                        { field: "ProductName", title: "Product Name" },
                        { 
                            field: "CategoryID",
                            width: "150px",
                            values: categories,
                            editor:function(container,options)
                            {
                                $('<input name-"' + options.fields +'"/>').
                              appendTo(container).kendoComboBox({
                                autoBind:false,
                                dataTextField:"text",
                                dataValueFiled:"value",
                                dataSource:new kendo.data.DataSource({
                                  schema:{
                                    model:{
                                      id:"value",
                                      fields:{
                                        text:{},
                                        value:{}
                                      }
                                    }
                                  },
                                  data:categories
                                })
                              })
                            },
                            title: "Category" 
                        },
                        { field: "UnitPrice", title: "Unit Price", format: "{0:c}", width: "150px" },
                        { command: "destroy", title: " ", width: "110px"}],
                    editable: true
                });
            });
        </script>