Show items count in group header in React Listview component

30 Jan 20238 minutes to read

The ListView component supports wrapping list items into a group based on the category. The category of each list item can
be mapped with groupBy field of the data source. You can display grouped list items count in the list-header using the group
header template. Refer to the following code sample to display grouped list item count.

index.jsx

import * as React from 'react';
import * as ReactDOM from "react-dom";
import { ListViewComponent } from '@syncfusion/ej2-react-lists';
function App() {
    //Define an array of JSON data
    let data = [
        { Name: 'Nancy', contact: '(206) 555-985774', id: '1', image: 'https://ej2.syncfusion.com/demos/src/grid/images/1.png', category: 'Experience' },
        { Name: 'Janet', contact: '[phone]', id: '2', image: 'https://ej2.syncfusion.com/demos/src/grid/images/3.png', category: 'Fresher' },
        { Name: 'Margaret', contact: '[phone]', id: '4', image: 'https://ej2.syncfusion.com/demos/src/grid/images/4.png', category: 'Experience' },
        { Name: 'Andrew ', contact: '[phone]', id: '5', image: 'https://ej2.syncfusion.com/demos/src/grid/images/2.png', category: 'Experience' },
        { Name: 'Steven', contact: '(71) 555-4848', id: '6', image: 'https://ej2.syncfusion.com/demos/src/grid/images/5.png', category: 'Fresher' },
        { Name: 'Michael', contact: '(71) 555-7773', id: '7', image: 'https://ej2.syncfusion.com/demos/src/grid/images/6.png', category: 'Experience' },
        { Name: 'Robert', contact: '(71) 555-5598', id: '8', image: 'https://ej2.syncfusion.com/demos/src/grid/images/7.png', category: 'Fresher' },
        { Name: 'Laura', contact: '[phone]', id: '9', image: 'https://ej2.syncfusion.com/demos/src/grid/images/8.png', category: 'Experience' },
    ];
    let fields = { text: 'Name', groupBy: 'category' };
    //Set customized list template
    function listTemplate(data) {
        return (<div className="e-list-wrapper e-list-multi-line e-list-avatar">
                <img className="e-avatar e-avatar-circle" src={data.image}/>
                <span className="e-list-item-header">{data.Name}</span>
                <span className="e-list-content">{data.contact}</span>
            </div>);
    }
    //Set customized group-header template
    function groupTemplate(data) {
        return (<div><span className='category'>{data.items[0].category}</span><span className="count"> {data.items.length} Item(s)</span></div>);
    }
    return (<div>
            <ListViewComponent id='list' dataSource={data} fields={fields} template={listTemplate} groupTemplate={groupTemplate} cssClass='e-list-template'></ListViewComponent>
        </div>);
}
export default App;
ReactDOM.render(<App />, document.getElementById('element'));

index.tsx

import * as React from 'react';
import * as ReactDOM from "react-dom";
import { ListViewComponent } from '@syncfusion/ej2-react-lists';

function App() {

        //Define an array of JSON data
    let data: { [key: string]: Object }[]  = [
        { Name: 'Nancy', contact:'(206) 555-985774', id: '1', image: 'https://ej2.syncfusion.com/demos/src/grid/images/1.png',  category: 'Experience'},
        { Name: 'Janet', contact: '[phone]', id: '2', image: 'https://ej2.syncfusion.com/demos/src/grid/images/3.png', category: 'Fresher' },
        { Name: 'Margaret', contact:'[phone]', id:'4', image: 'https://ej2.syncfusion.com/demos/src/grid/images/4.png', category: 'Experience' },
        { Name: 'Andrew ', contact:'[phone]', id: '5', image: 'https://ej2.syncfusion.com/demos/src/grid/images/2.png', category: 'Experience'},
        { Name: 'Steven', contact:'(71) 555-4848', id: '6', image: 'https://ej2.syncfusion.com/demos/src/grid/images/5.png', category: 'Fresher' },
        { Name: 'Michael', contact:'(71) 555-7773', id: '7', image: 'https://ej2.syncfusion.com/demos/src/grid/images/6.png', category: 'Experience' },
        { Name: 'Robert', contact:'(71) 555-5598', id: '8', image: 'https://ej2.syncfusion.com/demos/src/grid/images/7.png', category: 'Fresher' },
        { Name: 'Laura', contact:'[phone]', id: '9', image: 'https://ej2.syncfusion.com/demos/src/grid/images/8.png', category: 'Experience' },
    ];

    let fields: object =  { text: 'Name', groupBy: 'category' };
     //Set customized list template
    function listTemplate(data: any): JSX.Element {
        return(
            <div className="e-list-wrapper e-list-multi-line e-list-avatar">
                <img className="e-avatar e-avatar-circle" src={data.image} />
                <span className="e-list-item-header">{data.Name}</span>
                <span className="e-list-content">{data.contact}</span>
            </div>
        );
    }
    //Set customized group-header template
    function groupTemplate(data: any): JSX.Element {
        return(
            <div><span className='category'>{data.items[0].category}</span><span className="count"> {data.items.length} Item(s)</span></div>
        );
    }
    return (
        <div>
            <ListViewComponent id='list' dataSource={data} fields={fields} template={listTemplate as any} groupTemplate={groupTemplate as any} cssClass='e-list-template'></ListViewComponent>
        </div>
    );
}
export default App;
ReactDOM.render(<App />, document.getElementById('element'));