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Reload DropDownList Options in Scheduler Edit Form

Environment

Product Scheduler for Progress Kendo UI

Description

I have two resource DropDownLists. When the user chooses the value in the first one, I want to reload the second one.

How can I get the instance of the second DropDownList to reload the data of the DropDownList in a Scheduler edit form?

Solution

Implement an event handler for the edit event of the Scheduler. This function adds a change event handler to the first of the two DropDownLists. This change event handler successfully changes the available options in the second DropDownList by altering its DataSource.

  <div id="example">
     <div id="scheduler"></div>
  </div>
  <script>
    $(function() {
        function reloadLocationSelect(e) {
          var newDataSource = new kendo.data.DataSource({
            data: [
                { text: "Changed one", value: 5, color: "#f8a398" },
                { text: "Changed two", value: 6, color: "#51a0ed" },
                { text: "Changed three", value: 7, color: "#56ca85" }
            ]
          });

          var attendeesDropDown = $("select[data-bind='value:attendees']").getKendoDropDownList();

          attendeesDropDown.setDataSource(newDataSource);
        }

        $("#scheduler").kendoScheduler({
            date: new Date("2013/6/13"),
            startTime: new Date("2013/6/13 07:00 AM"),
            height: 600,
            views: [
                "day",
                { type: "workWeek", selected: true },
                "week",
                "month",
                "agenda",
                { type: "timeline", eventHeight: 50}
            ],
            timezone: "Etc/UTC",
            dataSource: {
                batch: true,
                transport: {
                    read: {
                        url: "https://demos.telerik.com/kendo-ui/service/tasks",
                        dataType: "jsonp"
                    },
                    update: {
                        url: "https://demos.telerik.com/kendo-ui/service/meetings/update",
                        dataType: "jsonp"
                    },
                    create: {
                        url: "https://demos.telerik.com/kendo-ui/service/meetings/create",
                        dataType: "jsonp"
                    },
                    destroy: {
                        url: "https://demos.telerik.com/kendo-ui/service/meetings/destroy",
                        dataType: "jsonp"
                    },
                    parameterMap: function(options, operation) {
                        if (operation !== "read" && options.models) {
                            return {models: kendo.stringify(options.models)};
                        }
                    }
                },
                schema: {
                    model: {
                        id: "taskId",
                        fields: {
                            taskId: { from: "TaskID", type: "number" },
                            title: { from: "Title", defaultValue: "No title", validation: { required: true } },
                            start: { type: "date", from: "Start" },
                            end: { type: "date", from: "End" },
                            startTimezone: { from: "StartTimezone" },
                            endTimezone: { from: "EndTimezone" },
                            description: { from: "Description" },
                            recurrenceId: { from: "RecurrenceID" },
                            recurrenceRule: { from: "RecurrenceRule" },
                            recurrenceException: { from: "RecurrenceException" },
                            roomId: { from: "RoomID", defaultValue: 1 },
                            attendees: { from: "Attendees", defaultValue: 1 },
                            isAllDay: { type: "boolean", from: "IsAllDay" }
                        }
                    }
                }
            },
            resources: [{
                    field: "roomId",
                    name: "Rooms",
                    dataSource: [
                        { text: "Meeting Room 101", value: 1, color: "#6eb3fa" },
                        { text: "Meeting Room 201", value: 2, color: "#f58a8a" }
                    ],
                    title: "Room"
                },
                {
                    field: "attendees",
                    name: "Attendees",
                    dataSource: [
                        { text: "Alex", value: 1, color: "#f8a398" },
                        { text: "Bob", value: 2, color: "#51a0ed" },
                        { text: "Charlie", value: 3, color: "#56ca85" }
                    ],
                    title: "Attendees"
                }],
            edit: function (e) {
                var roomDropDown = $("select[data-bind='value:roomId']").getKendoDropDownList();
                roomDropDown.bind('change', reloadLocationSelect);
            }
        });
    });
  </script>

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