Grid with a custom datasource executing code after e.success()

[Andrew]

Hello,

I've a grid with a custom datasource

01..DataSource(dataSource => dataSource
02.    .Custom()
03.    .Batch(true)
04.    .Schema(s =>
05.        s.Model(model =>
06.        {
07.            model.Id(p => p.ID);
08.        })
09.    )
10.    .Transport(new
11.    {
12.        read = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customRead" },
13.        create = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customCreate" },
14.        update = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customUpdate" },
15.        destroy = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customDestroy" },
16.    })
17.)

 

It works as expected but I'm trying to build a grid which will send in ONLY ONE request all the created, updated and destroyed items to the server.

Out of the box the grid will send one request with all created items, another request with all updated items and another request with all destroyed items but searching here and there I got it working the way I need.

Now I'm facing only one problem and it's in the customUpdate and customDestroy handlers. Here's the customUpdate handler

1.function customUpdate(e) {
2.    e.success();
3.}

 

Basically what I'm saying is: when the user update or destroy a row DOES NOTHING. I'll do all the updates when the user click a custom save button I've implemented.

The problem is that after the e.success() method is called the datasource remove the state of the row (updated, destroyed) so this is what I need:

Is it possible to execute some code right away after the whole code inside e.success() finished?

PD: I've realized that when e.success() call is finished the status of the rows isn't changed yet (updated, destroyed) so I need to be able to execute some code after the whole code inside e.success() is executed.

Thank you.

[Konstantin Dikov]

Hi Andrew,

You could try to attach handler to the dataBound event of the Grid with "one":

function customUpdate(e) {
    e.success();
    var grid = $("#grid").data("kendoGrid");
    grid.one("dataBound", function () {
        //your custom code
    })
}

Can you please give this a try and let me know if it fits to your requirement.


Regards,
Konstantin Dikov
Telerik by Progress

[Andrew]

Hi Konstantin,

Yes! it fits my requirement.

Would you please tell me how grid.one works because I don't see it in the documentation.

Thank you.

[Konstantin Dikov]

Hello Andrew,

This is a jQuery method that attaches event handler that will fire only once:

• http://api.jquery.com/one/

Best Regards,
Konstantin Dikov
Telerik by Progress

[Andrew]

Hi Konstantin,

I've a read action in one controller with this signature:

1.public IActionResult CustomRead(Guid id)
2.{
3.
4.}

 

How can I configure the read handler of the datasource to pass a parameter?

01..DataSource(dataSource => dataSource
02.    .Custom()
03.    .Batch(true)
04.    .Schema(s =>
05.        s.Model(model =>
06.        {
07.            model.Id(p => p.ID);
08.        })
09.    )
10.    .Transport(new
11.    {
12.        read = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customRead" },
13.        create = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customCreate" },
14.        update = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customUpdate" },
15.        destroy = new Kendo.Mvc.ClientHandlerDescriptor() { HandlerName = "customDestroy" },
16.    })
17.)

 

Thank you.

[Pavlina]

Hello,

I believe the following section of the documentation will help you achieve your goal:
http://docs.telerik.com/aspnet-mvc/helpers/grid/binding/ajax-binding#pass-additional-data-to-action-methods

Regards,
Pavlina
Telerik by Progress

 

[Andrew]

Hello,

I saw the page you suggested before asking the question.

That's the documentation for an AJAX datasource and I'm using a CUSTOM datasource.

Would you please explain me how I have to configure the custom read handler to pass a GUID parameter in line 12 of the datasource that I'm using the question?

Thank you.

[Konstantin Dikov]

Hi Andrew,

Since you are making the AJAX request manually you need to pass the additional data in that request:

• http://stackoverflow.com/a/18697832

Best Regards,
Konstantin Dikov
Telerik by Progress