Export to CSV Error with serverGrouping:true on DataSource definition

2 posts, 0 answers
  1. Luiz
    Luiz avatar
    5 posts
    Member since:
    May 2015

    Posted 21 Apr 2016 Link to this post


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

    version: Kendo UI v2016.1.412

          serverAggregates: true
          serverGrouping: true
            aggregates: 'aggregates'
            data: 'trips'
            total: 'total'
              id: 'period'
                max_speed: {type:'number'}
                avg_speed: {type:'number'}
                trip_distance: {type:'number'}
            groups: (response) ->
            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,





  2. Nikolay Rusev
    Nikolay Rusev avatar
    2289 posts

    Posted 25 Apr 2016 Link to this post

    Hello Luiz,


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


    Thank you for reporting this.


    Nikolay Rusev
    Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
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