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Kendo Grid Invalid template error for Dynamic Object dataSource

I am kinda stuck while trying to populate my Kendo Grid using Dynamic data list (List<ExapndoObject>).

I am working on ASP.NET Core MVC project and My Page Model code is successfully creating a list of data with Dynamic columns and values using the following code:

Page Model Code:

public async Task<IActionResult> OnGetGridDataAsync(string startDate, string endDate)
        {
             //Populating Dynamic List
            var dataList = new List<System.Dynamic.ExpandoObject>();
     
            var apiData = API call for data

            foreach (var data in apiData)
            {
                dynamic newObject = new ExpandoObject();
                newObject.Student = data.StudentName; //Student Column

                var attendanceDays = API call for data
                foreach (var attendanceDay in attendanceDays)
                {
                    if (attendanceDay.Date >= DateTime.Parse(startDate) && attendanceDay.Date <= DateTime.Parse(endDate))
                    {
                        var attendanceSessionAttend = API call for data

                        var attendanceSession = API call for data
                        var SessionName = attendanceSession.Name + " (" + attendanceDay.Date.ToString("dd MMM") + ")";

                        AttendanceStatusDto attendanceStatus = null;
                        if (attendanceSessionAttend[0].AttendanceStatusId != null)
                        {
                            attendanceStatus = API call for data
                            AddProperty(newObject, SessionName, attendanceStatus.Code);
                        }
                        else
                        {
                            AddProperty(newObject, SessionName, "");
                        }

                    }
                }

                dataList.Add(newObject);
            }

            return new JsonResult(dataList);
        }

        private static void AddProperty(dynamic attendanceObject, string columnName, string columnValue)
        {
            var attendanceObjectDict = attendanceObject as IDictionary<string, object>;
            if(attendanceObjectDict.ContainsKey(columnName))
            {
                attendanceObjectDict[columnName] = columnValue;
            }
            else
            {
                columnName = columnName.Replace(" ",String.Empty);
                attendanceObjectDict.Add(columnName, columnValue);
            }
        }

JQuery code:

function populateGrid() {
        $.ajax({
            type: "GET",
            url: '?handler=GridDate',
            data: {
                'startDate': firstday.toDateString(),
                'endDate': lastday.toDateString()
            },
            contentType: "application/json; charset=utf-8",
            success: function (result) {
                // notify the data source that the request succeeded
                console.log(result);
                generateGrid(result);
            },
            error: function (result) {
                // notify the data source that the request failed
                options.error(result);
            }
        });
    }

function generateGrid(response) {
               
        var gridOptions = {
            dataSource: response
        };

        $("#AttendanceTable").kendoGrid(gridOptions);

       var grid = $("#AttendanceTable").data("kendoGrid");
    };

when running the project, It is showing only the Student Column but other dynamic columns are showing 'Invalid Template error'

Invalid template:'<tr class="k-master-row" data-uid="#=data.uid#" role='row'><td class="#= data && data.dirty && data.dirtyFields && data.dirtyFields['Student'] ? ' k-dirty-cell' : '' #" role='gridcell'>#= data && data.dirty && data.dirtyFields && data.dirtyFields['Student'] ? '<span class="k-dirty"></span>' : '' ##:data.Student==null?'':data.Student#</td><td class="#= data && data.dirty && data.dirtyFields && data.dirtyFields['MondaySession(28Feb)'] ? ' k-dirty-cell' : '' #" role='gridcell'>#= data && data.dirty && data.dirtyFields && data.dirtyFields['MondaySession(28Feb)'] ? '<span class="k-dirty"></span>' : '' ##:data.MondaySession(28Feb)==null?'':data.MondaySession(28Feb)#</td></tr>' Generated code:'var $kendoOutput, $kendoHtmlEncode = kendo.htmlEncode;with(data){$kendoOutput='<tr class="k-master-row" data-uid="'+(data.uid)+'" role=\'row\'><td class="'+( data && data.dirty && data.dirtyFields && data.dirtyFields['Student'] ? ' k-dirty-cell' : '' )+'" role=\'gridcell\'>'+( data && data.dirty && data.dirtyFields && data.dirtyFields['Student'] ? '<span class="k-dirty"></span>' : '' )+''+$kendoHtmlEncode(data.Student==null?'':data.Student)+'</td><td class="'+( data && data.dirty && data.dirtyFields && data.dirtyFields['MondaySession(28Feb)'] ? ' k-dirty-cell' : '' )+'" role=\'gridcell\'>'+( data && data.dirty && data.dirtyFields && data.dirtyFields['MondaySession(28Feb)'] ? '<span class="k-dirty"></span>' : '' )+''+$kendoHtmlEncode(data.MondaySession(28Feb)==null?'':data.MondaySession(28Feb))+'</td></tr>';}return $kendoOutput;'

Below is the console view of the page with data:

Please help me out.

Data Source

Grid

Templates

updated question on 16 Feb 2022

0 answers

1.2K+ views

Uncaught Type error: m is not a function

I am working with kendo grids with buttons in each column that display another grid in a modal. The first is using MVC, the modal grid was created dynamically. Each uses kendo dropdownlists to edit cells. The issue occurs like this:

1. A dropdownlist is clicked on in the initial grid,

2. The modal is opened afterward (each row has its own button)

3. A dropdownlist inside the modal's kendo grid is clicked, and nothing happens

Basically, if a dropdown is clicked in grid 1, and then you attempt to click one of the dropdownlists in the modal grid,
this error is thrown:

Uncaught TypeError: m is not a function
at init.editor (kendo.all.min.js:54)
at init.refresh (kendo.all.min.js:54)
at new init (kendo.all.min.js:54)
at HTMLTableCellElement.<anonymous> (kendo.all.min.js:26)
at Function.each (jquery.min.js:2)
at R.fn.init.each (jquery.min.js:2)
at R.fn.init.e.fn.<computed> [as kendoEditable] (kendo.all.min.js:26)
at init.editCell (kendo.all.min.js:59)
at init.tap (kendo.all.min.js:59)
at init.trigger (kendo.all.min.js:25)

This error is vague, and on the surface seems like jQuery scripts may be interfering or out of order. I don't think this is the case
because A) I haven't recieved errors like this before and B) the dropdowns work if the modal is opened without any of the dropdowns in the
other grid being touched. It seems as if when a dropdown is clicked in initial grid, somehow it breaks the dropdown in modal grid. They
do not have the same name.

Any ideas on where this console error comes from?

Here is a snippet of the grid being generated in the modal:

$("#account-tracking-grid").kendoGrid({
columns: [
{
field: "accountName",
title: "Account Name",
editable: function () { return false },
width: "200px",
},
{
field: "accountNumber",
title: "Account Number",
editable: function () { return false },
width: "200px"
},
{
field: "Balance",
title: "Balance",
width: "40px",
template: "<span>#=getIcon(Balance)#</span>",
editor: dropdownlist,
headerTemplate: "<span class='verticalText'>Balance</span>"
}
],
editable: "incell",
edit: function (e) {
var container = e.container;
var dropDownList = container.find("[data-role=dropdownlist]").data("kendoDropDownList");
if (dropDownList) dropDownList.open();
},
dataSource: {
transport: {
read: "/Account/Tracking?uniqueId=" + document.getElementById('unid').value
}
}
});
}

function dropdownlist(container, options) {
$('<input id="account-dropdownlist"/>')
.appendTo(container)
$("#account-dropdownlist").kendoDropDownList({
dataTextField: "text",
dataValueField: "value",
dataSource: items,
change: onChange,
open: onOpen
});
}