Develop Reference

Display Kendo Chart (pie chart) based on grid data

I am using KendoUI - Grid component
How can I convert this into Kendo Grid:
For Eg:
I have created kendo grid (table) by using local data. As soon as I click on "Generate chart" button, above table's filter data should create the Kendo pie chart like below...
As I am new to Kendo, can somebody please suggest me the answer?
Code:
var localData = [
{
Id: 1,
userName: "John",
game: "A",
difficultyLevel: "Easy",
startTime: "25-05-2017",
endTime: "26-05-2017",
score: "210"
},
{
Id: 2,
userName: "Sam",
game: "B",
difficultyLevel: "Hard",
startTime: "04-11-2016",
endTime: "01-12-2016",
score: "4800"
},
];
var dataSource = new kendo.data.DataSource({
data: localData,
schema: {
model: {
fields: {
Id: {
type: "number"
},
userName: {
type: "string"
},
userName: {
type: "string"
},
difficultyLevel: {
type: "string"
},
startTime: {
type: "string"
},
endTime: {
type: "string"
},
score: {
type: "number"
},
}
}
}
});
$("#grid").kendoGrid({
dataSource: dataSource,
rowTemplate: $.proxy(kendo.template($("#rowTemplate").html()), dataSource),
scrollable: true,
height: 300,
sortable: true,
filterable: false,
groupable: true,
pageable: true,
columns: [{
field: "Id",
title: "Id",
filterable: true
}, {
field: "userName",
title: "userName"
}, {
field: "game",
title: "game"
}, {
field: "difficultyLevel",
title: "difficultyLevel"
}, {
field: "startTime",
title: "startTime"
}, {
field: "endTime",
title: "endTime"
}, {
field: "score",
title: "score"
}]
});
JsFiddle

You need to prepare your data to the chart's format. Something like:
$chartContainer.kendoChart({
dataSource: {
data: localData,
schema: {
parse: function(data) {
return data.map(x => {
return {
value: Number(x.score),
category: x.userName
}
});
}
}
},
series: [{
type: "pie",
field: "value",
categoryField: "category"
}],
tooltip: {
visible: true,
template: "#= category #: #= value #"
}
});
Updated Fiddle

How to get items to dropdown list in a field using jsGrid?

This is a jQuery code of my sample project to get details from application side to display in front in a grid which is build by jsGrid.
$("#part_table").jsGrid({
height: "auto",
width: "100%",
autoload: true,
editing: true,
sorting: true,
paging: true,
pageSize: 10,
inserting: true,
loadIndication: false,
filtering: true,
headerRowClass: 'table-green-header',
controller: {
loadData: function (filter) {
function.....
},
updateItem: function (item) {
function.....
}
},
fields: [
{ name: "Id", type: "number", visible: false },
{
name: "CatalogueId", type: "select", **items**: catalouges, valueField: "Id", textField: "CatalougeName", selectedIndex : -1 , title: "Catalouge Name", align: "center"
},
{ name: "DistributorPrice", type: "number", title: "Distributor Price", align: "center", filtering: false, sorting: false },
{ name: "IsActive", type: "checkbox", filtering: false, sorting: false },
{ type: "control" }
],
rowClick: function (args) {
return false;
},
});
Can anyone say how to get a list of items to field by calling to application side via AJAX call ?
Thanks

Load items in advance and then use result in the grid field config, e.g.:
$.ajax({
type: "GET",
url: "/countries/"
}).done(function(countries) {
countries.unshift({ id: "0", name: "" });
$("#jsGrid").jsGrid({
...,
fields: [
...
{ name: "country_id", title: "Country", type: "select", width: 100, items: countries, valueField: "id", textField: "name" }
]
});
});
You can find an example in the jsgrid sample project

You can do multiple simultaneous requests before the grid launches
$.when(
$.get("/api/v1/clients", function(clients) {
db.clients = clients;
}),
$.get("/api/v1/owners", function(owners) {
db.owners = owners;
})
).then(function() {
$("#jsGrid").jsGrid({
...,
fields: [
{ name: "client", title: "Client", type: "select", items: db.clients, valueField: "name", textField: "name" },
{ name: "owner", title: "Owner", type: "select", items: db.owners, valueField: "short_name", textField: "short_name" },
]
});
});

you write the ajax call in loadData of the controller.. something like:
controller: {
loadData: function(filter) {
return $.ajax({
type: "GET",
url: "/api/data",
data: filter,
dataType: "json"
});
}
}
further reference https://github.com/tabalinas/jsgrid-webapi

KnockoutJS components with KendoUI chart only works for the last chart

I have an Observable Array of items that creates components with a parameter.
Within each component, I use that parameter to query for data (through AJAX). I return that data into an Observable Array and use that Array as a data source for a KendoUI chart.
Example of list of created components with a parameter:
<csglist params="account:'08167526'"></csglist>
<hr>
<csglist params="account:'0873458'"></csglist>
<hr>
<csglist params="account:'0828337'"></csglist>
<hr>
<csglist params="account:'086778'"></csglist>
call that gets the data
getCategory = function () {
self.categoryChart([]);
xhr_get(cont.publish + 'api/dbmain/getCategory', { 'id': params.account }).done(function (allData) {
var mappedLogs = $.map(allData, function (item) { return new categoryData(item) });
self.categoryChart(mappedLogs);
buildChart();
})
}
function buildchart(){
$(document).ready(createChart);
$(document).bind("kendo:skinChange", createChart);
}
the create chart
function createChart() {
$("#" + self.act() + "chart").kendoChart({
dataSource: {
data: ko.toJS(self.categoryChart)
//, sort: { field: "category", dir: "asc" }
},
title: {
text: self.type()
},
legend: {
visible: true,
position: "bottom"
},
seriesDefaults: {
type: "bar",
stack: true
},
series: [{
field: "sales",
name: "Current Sales",
color: "#66110F"
}, {
field: "opp",
name: "Opportunity",
color: "#E65F5B"
}],
valueAxis: {
// max: 180,
line: {
visible: false
},
minorGridLines: {
visible: true
},
visible: false
},
categoryAxis: {
field: "category",
majorGridLines: {
visible: false
}
},
tooltip: {
visible: false,
template: "#= series.name #: #= value #"
}
});
}
But when the components are all created, only the last one has data.
Can anyone tell me why is this happening?

when I changed the the buildChart = function to self.buildChart = function, it works!

Is it possible to have full CRUD functions in kendo grid with local data

I'm currently implementing a kendo grid and i'm populating it with local data.
That is; I have generated a JSON string from my action and supplying that string on the view page.
In the end i would like to know if it is possible to implement full CRUD functions with local data?
here's a sample of the code written so far;
<div id="example" class="k-content">
<div id="grid"></div>
<script>
$(document).ready(function() {
var myData = ${coursemodules},
dataSource = new kendo.data.DataSource({
data: myData,
batch: true,
pageSize: 30,
schema: {
model: {
id: "id",
fields: {
id: { editable: false, nullable: true},
name: { type: "string", validation: { required: true }},
qualificationLevel: { type: "string", validation: { required: true }},
description: { type: "string", validation: { required: true }},
published: { type: "boolean" },
gateApprove: { type: "boolean" },
duration: { type: "number", validation: { min: 1, required: true } },
academicBody: { type: "string" }
}
}
}
});
$("#grid").kendoGrid({
dataSource: dataSource,
height: 350,
scrollable: true,
sortable: true,
pageable: true,
toolbar: ["create", "save", "cancel"],
columns: [
{
field: "id",
title: "ID",
width: '3%'
},
{
field: "name",
title: "Course Title",
width: '20%'
},
{
field: "description",
title:"Description",
width: '35%'
},
{
field: "published",
title: "Published",
width: '7%'
},
{
field: "gateApprove",
title: "Gate Approve",
width: '7%'
},
{
field: "duration",
title: "Duration",
width: '5%'
},
{
field: "academicBody.shortName",
title: "Academic Body",
width: '10%'
}
],
editable: true
});
});
</script>
</div>
I have realise that for the datasource, you have to declare transport to implement the CRUD. However, I need to declare "data". I tried declaring both transport and data. That doesn't seem to work.

Yes you can Here is JSFiddle Hope this will help you.
// this should be updated when new entries are added, updated or deleted
var data =
[{
"ID": 3,
"TopMenuId": 2,
"Title": "Cashier",
"Link": "www.fake123.com"},
{
"ID": 4,
"TopMenuId": 2,
"Title": "Deposit",
"Link": "www.fake123.com"}
];
$("#grid").kendoGrid({
dataSource: {
transport: {
read: function(options) {
options.success(data);
},
create: function(options) {
alert(data.length);
},
update: function(options) {
alert("Update");
},
destroy: function(options) {
alert("Destroy");
alert(data.length);
}
},
batch: true,
pageSize: 4,
schema: {
model: {
id: "ID",
fields: {
ID: {
editable: false,
nullable: true
},
TopMenuId: {
editable: false,
nullable: true
},
Title: {
editable: true,
validation: {
required: true
}
},
Link: {
editable: true
}
}
},
data: "",
total: function(result) {
result = result.data || result;
return result.length || 0;
}
}
},
editable: true,
toolbar: ["create", "save", "cancel"],
height: 250,
scrollable: true,
sortable: true,
filterable: false,
pageable: true,
columns: [
{
field: "TopMenuId",
title: "Menu Id"},
{
field: "Title",
title: "Title"},
{
field: "Link",
title: "Link"},
{
command: "destroy"}
]
});

When binding local data, the Grid widget utilizes an abstraction that represents a local transport. Therefore, it does not require a custom transport; modifications made in the grid are reflected to the bound data source. This includes rollbacks through a cancellation.

There is fully functional example of this in telerik documentation
What you need is define transport block in dataSource object with custom CRUD funtions which update local source.
transport: {
create: function(options){
var localData = JSON.parse(localStorage["grid_data"]);
options.data.ID = localData[localData.length-1].ID + 1;
localData.push(options.data);
localStorage["grid_data"] = JSON.stringify(localData);
options.success(options.data);
},
read: function(options){
var localData = JSON.parse(localStorage["grid_data"]);
options.success(localData);
},
update: function(options){
var localData = JSON.parse(localStorage["grid_data"]);
for(var i=0; i<localData.length; i++){
if(localData[i].ID == options.data.ID){
localData[i].Value = options.data.Value;
}
}
localStorage["grid_data"] = JSON.stringify(localData);
options.success(options.data);
},
destroy: function(options){
var localData = JSON.parse(localStorage["grid_data"]);
for(var i=0; i<localData.length; i++){
if(localData[i].ID === options.data.ID){
localData.splice(i,1);
break;
}
}
localStorage["grid_data"] = JSON.stringify(localData);
options.success(localData);
},
}

Ext.Direct grid problem

(i posted this on the extjs forum too but recon SO is probably busier)
HI
I'm passing down the following json to a direct store:
{
"type": "rpc",
"tid": 2,
"action": "DirectReportDesigner",
"method": "GetReports",
"result": {
"total": 1,
"data": [{
"id": 1,
"FullTypeName": null,
"title": "test",
"useGroupedColConfig": false,
"groupTextTemplate": "{'ProviderName': ' Contract Number -- {gvalue}','ProviderName': ' Provider Name -- {gvalue}'}",
"groupHeaders": null,
"groupFields": "['CostElement2', 'CostElement3', 'CostElement4']",
"groupedHeaders": false,
"jsonUrl": "report/BudgetManagerBudgetData.rails",
"menuType": "rptmid",
"actualType": "rptmid",
"ignoreCols": "1",
"getRowClass": "settings.utils.highlightRowWhenCellEmptyClass",
"deleted": false,
"fitToScreen": false,
"isCopyOf": 0
}]
}
}
here is what the js code looks like:
Ext.extend(Ideal.ReportDesigner.ReportGrid, Ideal.UI.BaseGrid, {
pageSize: 25,
afterRender: function() {
this.getStore().load({
params: {
start: 0,
limit: 25
}
});
Ideal.ReportDesigner.ReportGrid.superclass.afterRender.apply(this, arguments);
},
header: false,
view: new Ext.grid.GridView({
autoFill: true
}),
cm: new Ideal.UI.ColumnModel([{
header: 'Report Name',
id: 'nameCol',
sortable: true,
dataIndex: 'title'
}, {
header: 'Json URL',
sortable: true,
dataIndex: 'jsonUrl'
}, {
header: 'Group Text Template',
sortable: true,
dataIndex: 'groupTextTemplate'
}, {
header: 'Group Headers',
sortable: true,
dataIndex: 'groupHeaders'
}, {
header: 'Group Fields',
id: 'groupFieldsCol',
sortable: true,
dataIndex: 'groupFields'
}, {
header: 'Grouped Headers',
sortable: true,
dataIndex: 'groupedHeaders'
}, {
header: 'Fit to Screen',
sortable: true,
dataIndex: 'fitToScreen'
}, {
header: 'Ignore Cols',
sortable: true,
dataIndex: 'ignoreCols'
}, {
header: 'Get Row Class',
sortable: true,
dataIndex: 'getRowClass'
}
]),
initComponent: function() {
var ds = new Ext.data.DirectStore({
directFn: DirectReportDesigner.GetReports,
paramsAsHash: false,
paramOrder: 'start|limit|sort|dir',
root: 'data',
idProperty: 'id',
totalProperty: 'total',
sortInfo: {
field: 'title',
direction: 'ASC'
},
fields: [{
name: 'id'
}, {
name: 'title'
}, {
name: 'useGroupedColConfig'
}, {
name: 'groupTextTemplate'
}, {
name: 'groupHeaders'
}, {
name: 'groupFields'
}, {
name: 'groupedHeaders'
}, {
name: 'jsonUrl'
}, {
name: 'menuType'
}, {
name: 'actualType'
}, {
name: 'fitToScreen'
}, {
name: 'ignoreCols'
}, {
name: 'getRowClass'
}, {
name: 'isCopyOf'
}
],
remoteSort: true
});
var pager = new Ext.PagingToolbar({
store: ds,
displayInfo: true,
pageSize: this.pageSize
});
var config = {
store: ds,
bbar: pager
};
Ext.apply(this, Ext.apply(this.initialConfig, config));
Ideal.ReportDesigner.ReportGrid.superclass.initComponent.apply(this, arguments);
}
});
the grid renders ok, the server code to get the json fires ok, but the store never loads the data. i know it's being passed back as i can see it in firebug and that's how i pasted it above.
can anyone see anything obvious here?
cheers
w://

I've always defined store's fields as an array of strings, not as objects.
fields: ['id','title','useGroupedColConfig', ...]

i managed to sort this - it was the name of the c# variable that was getting serialized that was throwing it - why i have no idea!!!