Export to CSV Error with serverGrouping:true on DataSource definition

[Luiz]

Hi,

My DataSource is presented below in coffescript. I omit some field for simplicty.

version: Kendo UI v2016.1.412

kendo.data.DataSource({
      serverAggregates: true
      serverGrouping: true
     ...
      schema:
        aggregates: 'aggregates'
        data: 'trips'
        total: 'total'
        model:
          id: 'period'
          fields:
            max_speed: {type:'number'}
            avg_speed: {type:'number'}
            trip_distance: {type:'number'}
        groups: (response) ->
         ...
      transport:
        read: (options) -> ...
    })

When I export the CSV, I got the error "Uncaught TypeError: Cannot read property 'data' of undefined"

Looking on the kendo Export source code, I found that when the serverGrouping is enabled, it expects an option object defined in the schema.transport parameter. This code is illustrated bellow.

 (function ($, kendo) {
        kendo.ExcelExporter = kendo.Class.extend({

         ...
var data = dataSource.data();
                    if (data.length > 0) {
                        this.dataSource._data = data;
                        var transport = this.dataSource.transport;
                        if (dataSource._isServerGrouped() && *transport.options*.data) {
                            transport.options.data = null;
                        }
                    }

...

The avaliable documentation does not have any reference to a parameters transport.options (http://docs.telerik.com/kendo-ui/api/javascript/data/datasource#configuration-transport). When I defined transport.options: {}, the CSV export works well.

In this context, I would like to know if there is an error in this implementation or if I made any mistake on defining the datasource.

Best Regards,

 

 

 

 

[Nikolay Rusev]

Hello Luiz,

 

This is bug in our code and we will address it shortly.

 

Thank you for reporting this.

 

Regards,
Nikolay Rusev
Telerik