This is more of a feature request...

If I want to refresh a datasource every 60 seconds, be it a grid, a dropdown, etc., I have to add a snippet of code something like this:

var interval = 60000;

         setInterval(function()

         {
             $("#my-grid").data("kendoGrid").dataSource.read();
         }, interval);

Yes, I realize this is trivial, but it would be nice if you could add an AutoRefresh function directly to the DataSource API that handled all of this under the covers.  Example:

Provide a data source setting and functionality that all the dates be created as UTC replacing the need to write the requestEnd code everywhere:

https://docs.telerik.com/aspnet-mvc/html-helpers/data-management/grid/how-to/editing/utc-time-on-both-server-and-client

It would be very helpful not to have to do this in every scenario that requires using UTC dates and have the data source create the dates in UTC as they reach the client.

Hi Team,

I would like to request the functionality to include data flags within the Kendo UI DataSource similar to the JQuery Data Tables.  They allow you return multiple flags and messages so long as you always name the display list the same name in the JSON.  I would rather not use Form Data.

Thank you!

Hi Team,

I would like to request the functionality to set the dataSource.model.id with a function handler rather than just a string. 

The usefulness behind this in my case is the mixing of dataTypes in the Kendo UI PanelBar. We are trying to mix the data in the results returned and do not currently have a common structure/object representing the data.

Thank you!

Hi Team,

I would like to request a way to use the Kendo UI DataSource with a flag set to state that it is returning a singular record.  For my case, my dataSource is using OData V4, and it requires utilizing an Ajax request to retrieve an individual entity. 

DataSource

      var dataSource = new kendo.data.DataSource({
        type: "odata-v4",
        transport: {
          read: function(options) {
            $.ajax({
              //makes a request for an individual entity by ID
              url: "https://demos.telerik.com/kendo-ui/service-v4/odata/Products(1)",
              //....
          }
        },
        //....
      });

It would be nice if there was a better way to do this.

Thank you!

IMHO it would be good to separate the DTOs and the serializer/deserializer into separate assembly packages and document the protocols used to communicate with telerik components as developers may create multi layered applications without having to deploy the full telerik package eg. in business logic layers or data access layers

It would be nice to be able to specify in a datasource filter two fields and an operator for the sake of data reporting. For example, where "completed date" is greater than "promised date" or "Actual cost" is greater than "estimated cost."

This sort of thing can be accomplished by calculated fields; a filter of where "cost overage" is greater than 0. The down side of the calculated field approach is all comparisons need to be pre-defined. 

https://developer.mozilla.org/en-US/docs/Web/API/Broadcast_Channel_API

Hi
I was just wondering if there was a message bus /Broadcast Channel component that was part of kendoUI.

I am thinking you could use your Observables or or something like the MVVM tooling.

just that the mozilla example does not work, it may be way out of date

thanks in advance

Doug

Bug report

The dataSource filter configuration only accepts string as value.

Reproduction of the problem

1. Open the Dojo example - https://dojo.telerik.com/@martin.tabakov@progress.com/uVAgAYem
2. Open the MultiSelect.

Current behavior

An error is thrown and the MultiSelect does not open.

Expected/desired behavior

There should be no error and the MultiSelect should open.

Environment

• Kendo UI version: 2021.2.511
• Browser: [all]

I selected the grid widget for this ticket, but the question is for all widgets with a remote filter service. I'm not finding a way to configure the DataSource to send the field data types, as defined in the schema, along with the filter request. The filter request array includes the field name, field value and ignore case values. It needs to also include the field data type, from the perspective of the DataSource. 

I know that I can parse values on the server side to try to guess the data type, as with the example applications, but that's not reliable in all cases, and I don't want to do that. It's better to know the field type based on the perspective of the widget.

Hopefully I'm just missing the DataSource configuration option to 'Include Field Data Types in Filtering Requests'. If that doesn't exist, please add it as an enhancement request, and let me know the most effective way to accomplish this that will work for all widget and data source combinations. I figured out that I can do this with a grid:

parameterMap: function (data, type) {
var fields = $("#grid").data("kendoGrid").dataSource.options.schema.model.fields;
var types = {};
for (let key in fields) {
types[key] = fields[key].type;
}
return $.extend({types}, data);
}

But I also have a Kendo Form with a form field edit of type MultiColumnComboBox, and the same approach will probably work, but I have to figure out how to get at the schema configuration in that case, and probably other combinations in the future.

See DoJo

This calls the DataSource read() method 10 times, but after 10 seconds only 2 of them are resolved (and actually only 2 requests are recorded in dev tools).

This is really annoying when relying on logic in a .then() block, because it is never called in the remaining cases.

Bug report
Insert on a node's children when using index of 0, аppends item wrongly to PanelBar


Reproduction of the problem
Dojo: https://dojo.telerik.com/iruWAwoy

Click the Insert button to see where the item in the PanelBar goes.

Environment
Kendo UI version: [all]

Bug report

In a DropDownList with local data and virtualization enabled. when the value is set after initialization using the value method, the change event is fired when the component is opened and closed, without actually changing its value.

Reproduction of the problem

1. Open the Dojo - https://dojo.telerik.com/@NeliKondova/EmOCUqiq and observe the browser console
2. Open and close the popup without selecting a value.

Current behavior

The change event is fired.

Expected/desired behavior

The change event should not be fired when the value is set through the value method.

Environment

• Kendo UI version: 2023.2.606
• Browser: [all ]