React SelectBox - Customize Group Headers
By default, group headers display text of the key field in a bold font. If you need a more flexible solution, specify groupTemplate.
App.js
- import React from 'react';
- import 'devextreme/dist/css/dx.light.css';
- import SelectBox from 'devextreme-react/select-box';
- import DataSource from "devextreme/data/data_source";
- const fruitsVegetables = [{
- key: "Fruits",
- items: [
- { name: "Apples", count: 10 },
- { name: "Oranges", count: 12 },
- { name: "Lemons", count: 15 }
- ]
- }, {
- key: "Vegetables",
- items: [
- { name: "Potatoes", count: 5 },
- { name: "Tomatoes", count: 9 },
- { name: "Turnips", count: 8 }
- ]
- }];
- const selectBoxDataSource = new DataSource({
- store: fruitsVegetables,
- map: function(groupedItem) {
- let overallCount = 0;
- groupedItem.items.forEach(function(item) {
- overallCount += item.count;
- })
- return Object.assign(groupedItem, { overallCount: overallCount });
- }
- });
- const renderGroup = (data) => {
- return (
- <p>
- {data.key + ' | Count: ' + data.overallCount}
- </p>
- );
- }
- class App extends React.Component {
- render() {
- return (
- <SelectBox ...
- dataSource={selectBoxDataSource}
- grouped="true"
- displayExpr="name"
- valueExpr="count"
- groupRender={renderGroup}
- />
- );
- }
- }
- export default App;
See Also
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