Custom Summaries
Documentation
The DataGrid support custom summary calculation. In this example, summaries are only calculated against selected grid rows. This behavior is implemented using the calculateCustomSummary and onSelectionChanged options.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import DataGrid, { Column, Selection, Paging, Summary, TotalItem } from 'devextreme-react/data-grid';
import service from './data.js';
class App extends React.Component {
constructor(props) {
super(props);
this.orders = service.getOrders();
}
calculateSelectedRow(options) {
if (options.name === 'SelectedRowsSummary') {
if (options.summaryProcess === 'start') {
options.totalValue = 0;
} else if (options.summaryProcess === 'calculate') {
if (options.component.isRowSelected(options.value.ID)) {
options.totalValue = options.totalValue + options.value.SaleAmount;
}
}
}
}
onSelectionChanged(e) {
e.component.refresh(true);
}
render() {
return (
<React.Fragment>
<DataGrid
id="gridContainer"
defaultSelectedRowKeys={[1, 4, 7]}
onSelectionChanged={this.onSelectionChanged}
dataSource={this.orders}
keyExpr="ID"
showBorders={true}>
<Paging enabled={false} />
<Selection mode="multiple" />
<Column dataField="OrderNumber" width={130} caption="Invoice Number" />
<Column dataField="OrderDate" width={160} dataType="date" />
<Column dataField="Employee" />
<Column dataField="CustomerStoreCity" caption="City" />
<Column dataField="CustomerStoreState" caption="State" />
<Column dataField="SaleAmount" alignment="right" format="currency" />
<Summary calculateCustomSummary={this.calculateSelectedRow}>
<TotalItem
name="SelectedRowsSummary"
summaryType="custom"
valueFormat="currency"
displayFormat={'Sum: {0}'}
showInColumn="SaleAmount" />
</Summary>
</DataGrid>
</React.Fragment>
);
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#gridContainer {
height: 440px;
margin-bottom: 10px;
}
let orders = [{
'ID' : 1,
'OrderNumber' : 35703,
'OrderDate' : '2014-04-10',
'SaleAmount' : 11800,
'Terms' : '15 Days',
'TotalAmount' : 12175,
'CustomerStoreState' : 'California',
'CustomerStoreCity' : 'Los Angeles',
'Employee' : 'Harv Mudd'
}, {
'ID' : 4,
'OrderNumber' : 35711,
'OrderDate' : '2014-01-12',
'SaleAmount' : 16050,
'Terms' : '15 Days',
'TotalAmount' : 16550,
'CustomerStoreState' : 'California',
'CustomerStoreCity' : 'San Jose',
'Employee' : 'Jim Packard'
}, {
'ID' : 5,
'OrderNumber' : 35714,
'OrderDate' : '2014-01-22',
'SaleAmount' : 14750,
'Terms' : '15 Days',
'TotalAmount' : 15250,
'CustomerStoreState' : 'Nevada',
'CustomerStoreCity' : 'Las Vegas',
'Employee' : 'Harv Mudd'
}, {
'ID' : 7,
'OrderNumber' : 35983,
'OrderDate' : '2014-02-07',
'SaleAmount' : 3725,
'Terms' : '15 Days',
'TotalAmount' : 3850,
'CustomerStoreState' : 'Colorado',
'CustomerStoreCity' : 'Denver',
'Employee' : 'Todd Hoffman'
}, {
'ID' : 9,
'OrderNumber' : 36987,
'OrderDate' : '2014-03-11',
'SaleAmount' : 14200,
'Terms' : '15 Days',
'TotalAmount' : 14800,
'CustomerStoreState' : 'Utah',
'CustomerStoreCity' : 'Salt Lake City',
'Employee' : 'Clark Morgan'
}, {
'ID' : 11,
'OrderNumber' : 38466,
'OrderDate' : '2014-03-01',
'SaleAmount' : 7800,
'Terms' : '15 Days',
'TotalAmount' : 8200,
'CustomerStoreState' : 'California',
'CustomerStoreCity' : 'Los Angeles',
'Employee' : 'Harv Mudd'
}, {
'ID' : 15,
'OrderNumber' : 39874,
'OrderDate' : '2014-02-04',
'SaleAmount' : 9050,
'Terms' : '30 Days',
'TotalAmount' : 19100,
'CustomerStoreState' : 'Nevada',
'CustomerStoreCity' : 'Las Vegas',
'Employee' : 'Harv Mudd'
}, {
'ID' : 18,
'OrderNumber' : 42847,
'OrderDate' : '2014-02-15',
'SaleAmount' : 20400,
'Terms' : '30 Days',
'TotalAmount' : 20800,
'CustomerStoreState' : 'Wyoming',
'CustomerStoreCity' : 'Casper',
'Employee' : 'Todd Hoffman'
}, {
'ID' : 19,
'OrderNumber' : 43982,
'OrderDate' : '2014-05-29',
'SaleAmount' : 6050,
'Terms' : '30 Days',
'TotalAmount' : 6250,
'CustomerStoreState' : 'Utah',
'CustomerStoreCity' : 'Salt Lake City',
'Employee' : 'Clark Morgan'
}, {
'ID' : 29,
'OrderNumber' : 56272,
'OrderDate' : '2014-02-06',
'SaleAmount' : 15850,
'Terms' : '30 Days',
'TotalAmount' : 16350,
'CustomerStoreState' : 'Utah',
'CustomerStoreCity' : 'Salt Lake City',
'Employee' : 'Clark Morgan'
}, {
'ID' : 30,
'OrderNumber' : 57429,
'OrderDate' : '2013-12-31',
'SaleAmount' : 11050,
'Terms' : '30 Days',
'TotalAmount' : 11400,
'CustomerStoreState' : 'Arizona',
'CustomerStoreCity' : 'Phoenix',
'Employee' : 'Clark Morgan'
}, {
'ID' : 32,
'OrderNumber' : 58292,
'OrderDate' : '2014-05-13',
'SaleAmount' : 13500,
'Terms' : '15 Days',
'TotalAmount' : 13800,
'CustomerStoreState' : 'California',
'CustomerStoreCity' : 'Los Angeles',
'Employee' : 'Harv Mudd'
}];
export default {
getOrders() {
return orders;
}
};
System.config({
transpiler: 'plugin-babel',
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16/umd/react.development.js',
'react-dom': 'npm:react-dom@16/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'devextreme': 'npm:devextreme@19.2',
'devextreme-react': 'npm:devextreme-react@19.2',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'devexpress-gantt': 'npm:devexpress-gantt',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});