Hello
I have a grid and each row can be expanded, using detailInit, to show an inner grid.
I fetch the data beforehand so that I can populate the grid using local data.
In inner grid I have a column with a delete button - using template I call a delete function passing this as a parameter.
// column definition
{
field: "delete",
title: "Delete",
width: 50,
template: "<span class='delete' onclick='delete(this)'><img src='.delete_icon.png'/></span>"
},
my delete function :
function delete(e) { let Loader = KENDO.KendoLoader($("body")); try { Loader.Show(); let row = $(e).closest("tr"); let grid = $(e).closest(".innerGrid"); let dataItem = KENDO.KendoGrid(grid).GetDataItem(row); let innerRowId= dataItem.id; let parentRow = row.parent().closest(".k-detail-row").prev(); let parentDataItem = KENDO.KendoGrid($("#ParentGrid")).GetDataItem(parentRow); KENDO.KendoGrid(grid).DeleteUI([innerRowId]); // DeleteUI gets array of ids to delete , implemented below // if no rows remain in inner grid, I need to update a column's value in the parent row if (KENDO.KendoGrid(grid).HasRows() == false) { grid.hide(); grid.siblings(".noRecordsFound").show(); let updatedDataObj = { id: parentDataItem.id, someColumnOnParentRow: null } KENDO.KendoGrid($("#ParentGrid")).UpdateUI([updatedDataObj]); // UpdateUI gets array of objects to update, implemented below } } catch (error) { debugger; console.log(error.message); } finally { Loader.Hide(); } }
We have created a own KENDO wrapper script for different widgets. Here is the kendoGrid code:
let KENDO = { KendoComponent(jQueryElement, component, options = null) { let kendoComponent = {}; kendoComponent.InitKendoComponent = function () { let kComponent = jQueryElement.data(component); if (!kComponent) { if (options) { kComponent = jQueryElement[component](options).data(component); } else { kComponent = jQueryElement[component]().data(component); } } return kComponent; }; return kendoComponent; }, KendoGrid(jQueryElement, options = null) { let kendoGrid = {}; let kGrid = KENDO.KendoComponent(jQueryElement, "kendoGrid", options).InitKendoComponent(); if (options) kGrid.setOptions(options); kendoGrid.SetOptions = function (options) { kGrid.setOptions(options); return kendoGrid; } kendoGrid.GetData = function () { return Array.from(kGrid.dataSource.data()); } kendoGrid.GetDataItem = function (jQueryTableRow) { return kGrid.dataItem(jQueryTableRow); } kendoGrid.UpdateUI = function (dataToUpdate = []) { dataToUpdate.forEach(obj => { let dataItem = kGrid.dataSource.get(obj.id); if (dataItem) { for (let prop in obj) { if (prop !== "id") { dataItem.set(prop, obj[prop]); } } } }); return kendoGrid; } kendoGrid.DeleteUI = function (idsToDelete = []) { idsToDelete.forEach(id => { let dataItem = kGrid.dataSource.get(id); if (dataItem) kGrid.dataSource.remove(dataItem); }); return kendoGrid; }; kendoGrid.HasRows = function () { return kGrid.dataSource.data().length > 0; } return kendoGrid; } }
It appears that UpdateUI does not function as it should.
When I test I notice that when the last remaining row of inner grid is deleted, the parent row's column is indeed updated to null, the No Records Found message is shown instead of the inner grid, the parent row gets collapsed, and when I expand it the inner grid is shown with the last remaining row.
Suprisingly, if I comment out the UpdateUI line, the inner grid's row gets deleted, without collapsing the inner grid and the No Records Found message is shown as intended (the parent row's column does not get updated in this case, obviously).
Is it a bug in Kendo ? or am I doing something wrong?
When there is a second item in a row and both are expanded the value is no longer sliced(filtered?) by the first item. My users are used to this with excel etc and really want this functionality how can I achieve it?
Value sum is correct (sliced) for all rows
where second row is expanded and not correct(sliced?).
Here is a simplified version of my code showing the unwanted behavior
<!DOCTYPE html>
<html lang="en">
<head>
<link href="../content/shared/styles/examples-offline.css" rel="stylesheet">
<link href="../../styles/default-ocean-blue.css" rel="stylesheet">
<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
<script src="https://unpkg.com/jszip/dist/jszip.min.js"></script>
<script src="../../js/kendo.all.min.js"></script>
<script src="../content/shared/js/console.js"></script>
</head>
<body>
<div id="container">
<div id="pivotgrid"></div>
<div id="configurator"></div>
<div id="pivotbutton"></div>
</div>
<script>
var dataSource = new kendo.data.PivotDataSourceV2({
"data": [
{ "Value": 77, "ASort": 2, "BSort": "b" },
{ "Value": 28, "ASort": 1, "BSort": "a" },
{ "Value": 63, "ASort": 2, "BSort": "a" },
{ "Value": 42, "ASort": 1, "BSort": "b" }
],
rows: [
{ name: "ASort", expand: true },
{ name: "BSort", expand: true }
],
"schema": {
"model": {
"fields": {
"Value": { "type": "number" },
"ASort": { "type": "number" },
"BSort": { "type": "string" }
}
},
"cube": {
"dimensions": {
"ASort": { "caption": "ASort" },
"BSort": { "caption": "BSort" }
},
"measures": {
"Value sum": {
"field": "Value",
"format": "{0:n}",
"aggregate": "sum"
}
}
}
}
});
$(document).ready(function () {
window.pivotgrid = $("#pivotgrid").kendoPivotGridV2({
height: $(window).height() - 2,
dataSource: dataSource
}).data("kendoPivotGridV2");
$("#configurator").kendoPivotConfiguratorV2({
dataSource: pivotgrid.dataSource,
filterable: true,
sortable: true
});
$("#pivotbutton").kendoPivotConfiguratorButton({
configurator: "configurator"
});
$("#container").kendoPivotContainer({
configuratorPosition: "left"
});
});
</script>
</body>
</html>
Hello.
We own a license for an older version of Kendo UI for jQuery, and we are now testing the latest release (demo version) to decide if we should upgrade.
We have a chart showing the datapoints from a datasource, where category is a date (rounded to minute) and value is a number. Series is set to show a gap if data point is missing.
The attached picture shows the chart on the left, and the content of the datasource._view array as logged in the browser's JavaScript console. As you can see after datapoint at 15.57 there's a big gap, even if the datapoints actually exist in the datasource.
The chart is updated by creating a new datasource when new data is available every 5 minutes.
What could be the reason if such behavior? Are we doing something wrong? Maybe we should reset the chart in some way before passing the updated datasource?
Thank you.
$scope.dataSource = new $kendo.data.DataSource({
pageSize: 10,
serverPaging: false,
serverFiltering: false,
schema: {
model: {
id: "id"
}
},
transport: {
read: read
}
});
$scope.gridOptions = {
selectable: "multiple",
pageable: {
pageSizes: [5, 10, 15, 20, 25, 50]
},
persistSelection: true,
resizable: true,
filterable: { mode: "row" },
sortable: {
mode: "multiple",
allowUnsort: true
}
};
// template
<div kendo-grid k-data-source="dataSource " k-options="gridOptions">
</div>
Even if the serverFiltering is set to false, when I write something to the filter textbox, the read function is invoked, but just for the first time.
Any help, please?
Hi, as the title says, I want to render the inner data of a multilevel array to a grid cell, maybe value separated by ";".
Here is the array (JSON)
"anni":[{"anno":"2026"},{"anno":"2025"}]
I tried many template format for the field I want to use, but none worked.
Last:
template: "#=anni.anno#"
Thank you
Alessandro
I have an html page with two kendomultiselect controls initialized with a code like the following:
function msAssegnatariConoscenza_GetDataSource()
{
return new kendo.data.DataSource(
{
serverFiltering: true,
schema: {
data: function (response)
{
//...
return response;}
},
transport: {
read: {
url: "../Api/Assegnatari_SearchWithUO", //Assegnatari_Search
contentType: "application/json; charset=utf-8",
dataType: "json",
type: "POST"
},
parameterMap: function (data, type)
{
//...
return JSON.stringify(data);
}
}
}
);
}
function msAssegnatariConoscenzaInit(fIsReadOnly)
{
if (!datiSmistamento.AssConoscenza) datiSmistamento.AssConoscenza = [];
$("#field_AssConoscenza").kendoMultiSelect({
autoBind: false,
dataTextField: "Nome",
dataValueField: "ID",
minLength: 3,
delay: 500,
height: 300,
headerTemplate: '...',
tagTemplate: '...',
itemTemplate: '...',
filtering: function (e)
{
if (!e.filter || !e.filter.value)
e.preventDefault();
},
dataSource: msAssegnatariConoscenza_GetDataSource() ,
value: null,
select: function (e)
{
var dataItem = this.dataItem(e.item.index());
return selectAssegnatarioConoscenza($(this.element[0]).attr("id"), dataItem, e);
},
change: function (e) { return msAssegnatariConoscenza_changeEvent(this, e); }, //Fired when value changed by the user, not form code.
dataBound: function (e) { e.sender.listView.focusFirst(); return false; }
});
}
When I delete an element in one control, I have to add it to the other control.
On the change event of the first I set the new value of the second with the following code:
msAssegnatariConoscenza.value([]); msAssegnatariConoscenza.dataSource.data(datiSmistamento.AssConoscenza); msAssegnatariConoscenza.value(datiSmistamento.AssConoscenza.map(avmAss => avmAss.ID));
Can anyone tell me what I have done wrong?
Hello we have a number of input elements, dropdowns, multiselects, etc which we are trying to defer loading for.
The problem is they use custom shared datasources, so setting them to AutoBind false is not automatically triggering the read() function, and we have added some additional dataSource behavior around multiselectors, which leads me to my question:
Is there a dataSource function like read() which only reads data from the server if its actually necessary? e.g. on the first load, if the dataSource has detected that the user has done something to the UI element to warrant a refresh, etc?
I know there are a tonne of undocumented functions on the kendo objects, some of them not intended for everyday use, but I'd be interested to know if any of them do what we need.
We are instantiating late bind a new dropdownlist using jquery, making it virtual and reading data from an ajax call on the server
Here is an example of a dropdown initialization
$('#articles-row select:first').kendoDropDownList( { filter: "contains", dataTextField: "Name", dataValueField: "Id", virtual: { itemHeight: 35, valueMapper: valueMapperArticles }, dataSource: { pageSize: 80, serverPaging: true, serverFiltering: true, schema: { data: function (response) { console.log(response.Data) return response.Data; } }, transport: { read: { url: "@Url.Action("Filter_Articoli")" } } } });
And here is a simplified version of the datasource read method used in our program
public JsonResult Filter_Articoli([DataSourceRequest] DataSourceRequest request)
{
IQueryable<Articles> art = _db.Articles
.Where(x => !x.Disabled).AsQueryable();
return Json(art.ToDataSourceResult(request));
}
When i instantiate the dropdown like so, he makes multiple server request, where the first one is correct i guess (using paging, sorting etc), and the other two are not necessary and badly formatted, making the execution of the page interrupt
Here is a screen of the three server request made by the datasource and the data obtained from the data formatting
Am i missing some configuration on the server or in the kendo dropdownlist instantiation?
Thanks in advance
I am trying to get my Line Chart to dynamically assert the field text rather than having to explicitly put the field in my remote datasource objects and then state that property as the field in the Line chart series.
so instead of doing it like
data = [
{Date: 09/10/2020, English: 88, Math: 99, Science: 45},
{Date: 08/22/2020, English: 76, Math: 90, Science: 95},
{Date: 08/01/2020, English: 70, Math: 80, Science: 75}
]
and LineSeries = [
{]
like in the Line Chart its done in the JQuery Line Chart example to get a seperate line for each subject and a data point for each distinct date.
Is it possible to instead do
data = [
{Date: 09/10/2020, Subject: "Math", Value: "78" },
{Date: 09/10/2020, Subject: "English", Value: "80" },
{Date: 09/10/2020, Subject: "Science", Value: "65" }
{Date: 08/22/2020, Subject: "Math", Value: "87"},
{Date: 08/22/2020, Subject: "English", Value: "97"},
{Date: 08/22/2020, Subject: "Science", Value: "57"},
]
and something like LineSeries = [ {
field: "Subject",
categoryField: "date",
name: "Subject",
},
] ? if not is there a seperate way to configure the series to get a seperate line for each subject and a data point for each distinct date?