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Lookup

Templates

You can use the following properties to specify custom templates for Lookup elements:

Lookup Element Property
Input field fieldRender
Drop-down list items itemRender
Group captions groupRender

To customize elements, you can also define specific fields in data objects. Visit the items documentation for a full list of such fields. Refer to the Default Templates help topic for more information about this feature.

Backend API
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import React from 'react'; import { Lookup, DropDownOptions } from 'devextreme-react/lookup'; import { employees } from './data.js'; import Field from './Field.js'; import Item from './Item.js'; const searchExpression = ['FirstName', 'LastName', 'Prefix']; class App extends React.Component { render() { return ( <div> <div className="dx-fieldset"> <div className="dx-fieldset-header">Custom Field Template</div> <div className="dx-field"> <Lookup className="field-customization" defaultValue={employees[0].ID} displayExpr={this.getDisplayExpr} valueExpr="ID" items={employees} searchEnabled={true} fieldRender={Field}> <DropDownOptions title="Select employee" /> </Lookup> </div> </div> <div className="dx-fieldset"> <div className="dx-fieldset-header">Custom Item Template</div> <div className="dx-field"> <Lookup items={employees} displayExpr={this.getDisplayExpr} searchExpr={searchExpression} valueExpr="ID" placeholder="Select employee" itemRender={Item}> <DropDownOptions title="Select employee" /> </Lookup> </div> </div> </div> ); } getDisplayExpr(item) { return item ? `${item.FirstName} ${item.LastName}` : ''; } } export default App;
import React from 'react'; export default function Field({ Picture, Prefix, FirstName, LastName }) { return ( <div className="custom-field"> <img src={Picture} /><div>{`${Prefix } ${ FirstName } ${ LastName}`}</div> </div> ); }
import React from 'react'; export default function Item({ Picture, Prefix, FirstName, LastName }) { return ( <div className="custom-item"> <img src={Picture} /><div>{`${Prefix } ${ FirstName } ${ LastName}`}</div> </div> ); }
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/21.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.6/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.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>
.field-customization { min-height: 32px; } .dx-lookup.field-customization .dx-lookup-field { padding: 0 5px; } .custom-field > img { vertical-align: middle; height: 30px; width: 21px; } .custom-field > div { display: inline-block; vertical-align: middle; line-height: 30px; font-size: 14px; margin-left: 5px; } .custom-item > img { height: 48px; width: 38px; margin-right: 10px; } .custom-item > div { display: inline-block; vertical-align: top; line-height: 48px; font-size: 15px; } .dx-viewport:not(.dx-theme-ios7) .dx-fieldset { width: 40%; float: left; } .dx-field > .dx-lookup { flex: 1; }
export const employees = [{ 'ID': 1, 'FirstName': 'John', 'LastName': 'Heart', 'Prefix': 'Mr.', 'Position': 'CEO', 'Picture': '../../../../images/employees/01.png', 'BirthDate': '1964/03/16', 'HireDate': '1995/01/15', 'Notes': 'John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003.\r\n\r\nWhen not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.', 'Address': '351 S Hill St.' }, { 'ID': 2, 'FirstName': 'Olivia', 'LastName': 'Peyton', 'Prefix': 'Mrs.', 'Position': 'Sales Assistant', 'Picture': '../../../../images/employees/09.png', 'BirthDate': '1981/06/03', 'HireDate': '2012/05/14', 'Notes': 'Olivia loves to sell. She has been selling DevAV products since 2012. \r\n\r\nOlivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.', 'Address': '807 W Paseo Del Mar' }, { 'ID': 3, 'FirstName': 'Robert', 'LastName': 'Reagan', 'Prefix': 'Mr.', 'Position': 'CMO', 'Picture': '../../../../images/employees/03.png', 'BirthDate': '1974/09/07', 'HireDate': '2002/11/08', 'Notes': 'Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team.\r\n\r\nRobert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.', 'Address': '4 Westmoreland Pl.' }, { 'ID': 4, 'FirstName': 'Greta', 'LastName': 'Sims', 'Prefix': 'Ms.', 'Position': 'HR Manager', 'Picture': '../../../../images/employees/04.png', 'BirthDate': '1977/11/22', 'HireDate': '1998/04/23', 'Notes': 'Greta has been DevAV\'s HR Manager since 2003. She joined DevAV from Sonee Corp.\r\n\r\nGreta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.', 'Address': '1700 S Grandview Dr.' }, { 'ID': 5, 'FirstName': 'Brett', 'LastName': 'Wade', 'Prefix': 'Mr.', 'Position': 'IT Manager', 'Picture': '../../../../images/employees/05.png', 'BirthDate': '1968/12/01', 'HireDate': '2009/03/06', 'Notes': 'Brett came to DevAv from Microsoft and has led our IT department since 2012.\r\n\r\nWhen he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).', 'Address': '1120 Old Mill Rd.' }, { 'ID': 6, 'FirstName': 'Sandra', 'LastName': 'Johnson', 'Prefix': 'Mrs.', 'Position': 'Controller', 'Picture': '../../../../images/employees/06.png', 'BirthDate': '1974/11/15', 'HireDate': '2005/05/11', 'Notes': 'Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you\'ve not met her, be certain to say hi.\r\n\r\nSandra has 2 daughters both of whom are accomplished gymnasts.', 'Address': '4600 N Virginia Rd.' }, { 'ID': 7, 'FirstName': 'Kevin', 'LastName': 'Carter', 'Prefix': 'Mr.', 'Position': 'Shipping Manager', 'Picture': '../../../../images/employees/07.png', 'BirthDate': '1978/01/09', 'HireDate': '2009/08/11', 'Notes': 'Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months.\r\n\r\nWhen not in the office, he is usually on the basketball court playing pick-up games.', 'Address': '424 N Main St.' }, { 'ID': 8, 'FirstName': 'Cynthia', 'LastName': 'Stanwick', 'Prefix': 'Ms.', 'Position': 'HR Assistant', 'Picture': '../../../../images/employees/08.png', 'BirthDate': '1985/06/05', 'HireDate': '2008/03/24', 'Notes': 'Cindy joined us in 2008 and has been in the HR department for 2 years. \r\n\r\nShe was recently awarded employee of the month. Way to go Cindy!', 'Address': '2211 Bonita Dr.' }, { 'ID': 9, 'FirstName': 'Kent', 'LastName': 'Samuelson', 'Prefix': 'Dr.', 'Position': 'Ombudsman', 'Picture': '../../../../images/employees/02.png', 'BirthDate': '1972/09/11', 'HireDate': '2009/04/22', 'Notes': 'As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.', 'Address': '12100 Mora Dr' }];
window.config = { transpiler: 'plugin-babel', meta: { 'devextreme/localization.js': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.7.2/prop-types.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.1.6/cjs', 'devextreme-react': 'npm:devextreme-react@21.1.6', 'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.4.2/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.32/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.0.14/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2', 'inferno': 'npm:inferno@7.4.10/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.10/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.10/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.10/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.10/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.10/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.10/dist/inferno-extras.min.js', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, '@devextreme/vdom': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@devextreme/*/package.json", ], babelOptions: { sourceMaps: false, stage0: true, react: true } }; System.config(window.config);