Preserve Dirty Indicator in Incell Editing and Client Operations

Environment

Product	Progress® Kendo UI® Grid for jQuery
Operating System	All
Browser	All
Browser Version	All

Description

How can I preserve the dirty indicator in the incell editing mode of the Kendo UI Grid for jQueryss and during client operations?

Solution

Your project might require you to preserve the dirty indicator in incell editing and client operations.

The following example demonstrates how to achieve this behavior also in case new rows are added to the Grid.

The Kendo UI R3 2017 release provides the preservation of the dirty indicator as a built-in functionality.

    <div id="grid"></div>
    <script>
        var crudServiceBaseUrl = "https://demos.telerik.com/service/v2/core",
                dataSource = new kendo.data.DataSource({
                    transport: {
                        read:  {
                            url: crudServiceBaseUrl + "/Products"
                        },
                        update: {
                            url: crudServiceBaseUrl + "/Products/Update",
                            type: "POST",
                    		contentType: "application/json"
                        },
                        destroy: {
                            url: crudServiceBaseUrl + "/Products/Destroy",
                            type: "POST",
                    		contentType: "application/json"
                        },
                        create: {
                            url: crudServiceBaseUrl + "/Products/Create",
                            type: "POST",
                    		contentType: "application/json"
                        },
                parameterMap: function(options, operation) {
                    if (operation !== "read" && options.models) {
                        return kendo.stringify(options.models);
                    }
                }
            },
            change: function(e){
                if(e.action == "itemchange"){
                    e.items[0].dirtyFields = e.items[0].dirtyFields || {};
                    e.items[0].dirtyFields[e.field] = true;
                }
            },
            batch: true,
            pageSize: 30,
            schema: {
                model: {
                    id: "ProductID",
                    fields: {
                        ProductID: { editable: false, nullable: true },
                        ProductName: { validation: { required: true } },
                        UnitPrice: { type: "number", validation: { required: true, min: 1, max: 10} },
                        Discontinued: { type: "boolean" },
                        UnitsInStock: { type: "number", validation: { min: 0, required: true } }
                    }
                }
            }
        });

        $("#grid").kendoGrid({
            dataSource: dataSource,
            sortable: true,
            pageable: true,
            navigatable: true,
            height: 400,
            toolbar: ["create", "save", "cancel"],
            columns: [
                {field: "ProductName", template: "#=dirtyField(data,'ProductName')# #:ProductName#"},
                { field: "UnitPrice", title:"Unit Price", format: "{0:c}", width: "150px",
                template: "#=dirtyField(data,'UnitPrice')# #:kendo.toString(UnitPrice,'c')#"},
                { field: "UnitsInStock", title: "Units In Stock", width: 150, template: "#=dirtyField(data,'UnitsInStock')# #:UnitsInStock#" },
                { field: "Discontinued", width: 100, template: "#=dirtyField(data,'Discontinued')# #:Discontinued#" },
                { command: "destroy", title: "&nbsp;", width: 110 }],
            editable: true
        });

        function dirtyField(data, fieldName){
            if(data.dirty && data.dirtyFields[fieldName]){
                return "<span class='k-dirty'></span>"
            }
            else{
                return "";
            }
        }
    </script>

See Also

• JavaScript API Reference of the Data Grid