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Re-validate End DatePicker OnStart DatePicker Change

Environment

Product Progress Kendo UI Scheduler

Description

How can I validate again the end date in the Scheduler editor, when the start date of the event has been changed?

Solution

  1. Subscribe to the Scheduler edit event.
  2. Get reference to the start DatePicker and DateTimePicker and bind their change event.
  3. In the change event handler take reference to the respective End pickers. Set their value to the value entered in their input elements and trigger End picker change events to update the End field value.
    <input type="button" value="Select All" onclick="SelectAll()" />
    <div id="example">
      <div id="scheduler"></div>
    </div>
    <script>
      $(function() {

        function updateEndDateTimePicker() {
          var endDateTimePicker =  $("[data-container-for=end] input[data-role=datetimepicker]").data("kendoDateTimePicker");
          endDateTimePicker.value(kendo.parseDate(endDateTimePicker.element.val()));
          endDateTimePicker.trigger("change");
        }

        function updateEndDatePicker() {
          var endDatePicker =  $("[data-container-for=end] input[data-role=datepicker]").data("kendoDatePicker");
          endDatePicker.value(kendo.parseDate(endDatePicker.element.val()));
          endDatePicker.trigger("change");
        }

        function schedulerEdit(e) {
          var startDateTimePicker =  $("[data-container-for=start] input[data-role=datetimepicker]").data("kendoDateTimePicker");
          startDateTimePicker.bind("change", updateEndDateTimePicker);

          var startDatePicker =  $("[data-container-for=start] input[data-role=datepicker]").data("kendoDatePicker");
          startDatePicker.bind("change", updateEndDatePicker);

        }

        $("#scheduler").kendoScheduler({
          date: new Date("2013/6/13"),
          startTime: new Date("2013/6/13 07:00 AM"),
          height: 600,
          selectable: true,
          edit: schedulerEdit,
          editable: {
            resize: false
          },
          views: [
            "day",
            { type: "week", selected: true },
            "month",
            "timeline"
          ],
          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/tasks/update",
                dataType: "jsonp"
              },
              create: {
                url: "https://demos.telerik.com/kendo-ui/service/tasks/create",
                dataType: "jsonp"
              },
              destroy: {
                url: "https://demos.telerik.com/kendo-ui/service/tasks/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" },
                  isAllDay: { type: "boolean", from: "IsAllDay" }
                }
              }
            }
          }
        });
      });

      function SelectAll() {
        var scheduler = $("#scheduler").data("kendoScheduler");
        var allEvents = scheduler.data().map(function(val, i) { return val.uid; });
        scheduler.select(allEvents);
      }

    </script>

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