How to do user-defined callback when using odata?

[Nicky]

I'm new to kendoUI.
I found the odata definition in kendo.data.odata.js, here's the code snippet:

........

$.extend(true, kendo.data, {

        schemas: {

            odata: {

                type: "json",

                data: "d.results",

                total: "d.__count"

            }

        },

        transports: {

            odata: {

                read: {

                    cache: true, // to prevent jQuery from adding cache buster

                    dataType: "jsonp",

                    jsonpCallback: "callback", //required by OData

                    jsonp: false // to prevent jQuery from adding the jsonpCallback in the query string - we will add it ourselves

                },

.......

The common way to use odata I see in this forum is like this:

var data = new kendo.data.DataSource({

    type: "odata",

    transport: {

        read: "http://odata.netflix.com/v2/Catalog/Genres"

    }

});

The pre-defined callback funtion will be invoked by kendo framework automatically, but I want to do some extra things in this pre-defined callback. When I try to use it another way(as follows), it seems it does NOT work, perhaps kendo framework don't allow user to use $.ajax() manually.

......
type: "odata",

serverFiltering: true,

transport:{

            read: function(options){

                $.ajax({  //!!won't work when type is odata

                    url:"http://my_test_url",

                    dataType:"json",

                    data:options.data,

                    success:function (result) {

                        options.success(result);

                        doUserDefinedCallback(); //do my callback

                    }

                });

            }

        }
......

But I use a tricky way, it will take another server call and looks ugly somehow, here's the code snippet:

.......    

type: "odata",  //using odata

serverFiltering: true,

transport: {

    read: {   //can NOT using $.ajax() manually here


url:"http://my_test_url"

    }

},

schema:{

    data: function(response){

        doServerCallFirst_Then_DoUserDefinedCallback(); //actually I do another server call here, then do my callback when the call returns.


        return response.d.results;

    }

}

.......

I need to use odata type, is there some better solution? Any help will be with great appreciation.

[Daniel]

Hello Nicky,

You can use the requestEnd event to execute your logic when a request is completed successfully. Performing the request with custom code is supported but you will have to convert the parameters to the needed format.

Regards,
Daniel
the Telerik team