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Use Remote Validation for the Scheduler

Environment

Product Progress Kendo UI Scheduler for jQuery
Operating System Windows 10 64bit
Visual Studio version Visual Studio 2017
Preferred Language JavaScript

Description

How can I use remote validation during event editing in a Kendo UI Scheduler?

Solution

The following example demonstrates how to achieve the desired scenario.

<div id="example">
  <div id="scheduler"></div>
</div>
<script>
$(function() {
    $("#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"
        ],
        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,
                            custom: function(input) {
                              if (input.prop("name") === "title") {
                                if (!remoteValidator.initiated) {
                                  remoteValidator.check(input, this);

                                  input.attr("data-custom-msg", "checking...");

                                  return false;
                                }

                                input.attr("data-custom-msg", "Not valid!");

                                return remoteValidator.valid;
                              }

                              return 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" },
                        ownerId: { from: "OwnerID", defaultValue: 1 },
                        isAllDay: { type: "boolean", from: "IsAllDay" }
                    }
                }
            }
        },
        resources: [
            {
                field: "ownerId",
                title: "Owner",
                dataSource: [
                    { text: "Alex", value: 1, color: "#f8a398" },
                    { text: "Bob", value: 2, color: "#51a0ed" },
                    { text: "Charlie", value: 3, color: "#56ca85" }
                ]
            }
        ]
    });

    var remoteValidator = {
      valid: false,
      initiated: false,
      check: function(element, validator) {
        remoteValidator.initiated = true;

        // Simulate Ajax.

        setTimeout(function() {
            // TODO: set to true if valid
            // remoteValidator.valid = true;

            validator.validateInput(element);

            remoteValidator.initiated = false;
        }, 1000);
      }
    };
});
</script>

See Also

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