Customize Item
You can use the items[] array to configure all form items. This array can contain strings (formData field names) and objects (item configurations).
Use a string to create a simple item with default configuration as shown for the Email item.
To change the default settings, declare an item configuration object. Use the dataField property to bind an item to a field in the formData object. Use the editorType property to specify an item's data editor or configure the editor in the editorOptions object. You can also specify any other properties described in the SimpleItem section.
This demo shows how to specify editorOptions, editorType, validationRules, and colSpan properties for simple items in a Form component.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import 'devextreme-react/text-area';
import Form, { Item } from 'devextreme-react/form';
import service from './data.js';
class App extends React.Component {
constructor(props) {
super(props);
this.employee = service.getEmployee();
this.positions = service.getPositions();
this.rules = { 'X': /[02-9]/ };
this.validationRules = {
position: [
{ type: 'required', message: 'Position is required.' },
],
hireDate: [
{ type: 'required', message: 'Hire Date is required.' }
]
};
this.validateForm = (e) => {
e.component.validate();
};
}
render() {
return (
<React.Fragment>
<div className="long-title"><h3>Employee Details</h3></div>
<div className="form-container">
<Form
onContentReady={this.validateForm}
colCount={2}
id="form"
formData={this.employee}>
<Item dataField="FirstName" editorOptions={{ disabled: true }} />
<Item dataField="Position" editorType="dxSelectBox" editorOptions={{ items: this.positions, searchEnabled: true, value: '' }} validationRules={this.validationRules.position} />
<Item dataField="LastName" editorOptions={{ disabled: true }} />
<Item dataField="HireDate" editorType="dxDateBox" editorOptions={{ width: '100%', value: null }} validationRules={this.validationRules.hireDate} />
<Item dataField="BirthDate" editorType="dxDateBox" editorOptions={{ width: '100%', disabled: true }} />
<Item dataField="Address" />
<Item dataField="Notes" colSpan={2} editorType="dxTextArea" editorOptions={{ height: 90 }} />
<Item dataField="Phone" editorOptions={{ mask: '+1 (X00) 000-0000', maskRules: this.rules }} />
<Item dataField="Email" />
</Form>
</div>
</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/20.2.7/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.7/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>
.form-container {
margin: 10px 10px 30px;
}
.long-title h3 {
font-family: 'Segoe UI Light', 'Helvetica Neue Light', 'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;
font-weight: 200;
font-size: 28px;
text-align: center;
margin-bottom: 20px;
}
const employee = {
ID: 1,
FirstName: 'John',
LastName: 'Heart',
Position: 'CEO',
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., Los Angeles, CA',
Phone: '360-684-1334',
Email: 'jheart@dx-email.com'
};
const positions = [
'HR Manager',
'IT Manager',
'CEO',
'Controller',
'Sales Manager',
'Support Manager',
'Shipping Manager'
];
export default {
getEmployee() {
return employee;
},
getPositions() {
return positions;
}
};
System.config({
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/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@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.7',
'devextreme-react': 'npm:devextreme-react@20.2.7',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.23/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.29/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.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-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});