Customize Fields at Runtime

import React from 'react'; import 'devextreme-react/text-area'; import Form, { GroupItem, SimpleItem, Label } from 'devextreme-react/form'; import service from './data.js'; class App extends React.Component { constructor(props) { super(props); this.employee = service.getEmployee(); this.checkBoxOptions = { text: 'Show Address', value: true, onValueChanged: (e) => { this.setState({ isHomeAddressVisible: e.component.option('value') }); } }; this.addPhoneButtonOptions = { icon: 'add', text: 'Add phone', onClick: () => { this.employee.Phones.push(''); this.updatePhones(); } }; this.state = { phoneOptions: this.getPhonesOptions(), isHomeAddressVisible: true }; this.generateNewPhoneOptions = this.generateNewPhoneOptions.bind(this); this.getPhonesOptions = this.getPhonesOptions.bind(this); this.updatePhones = this.updatePhones.bind(this); } render() { return ( <React.Fragment> <div className="long-title"><h3>Personal details</h3></div> <div className="form-container"> <Form colCount={2} id="form" formData={this.employee}> <GroupItem> <GroupItem> <GroupItem caption="Personal Data"> <SimpleItem dataField="FirstName" /> <SimpleItem dataField="LastName" /> <SimpleItem editorType="dxCheckBox" editorOptions={this.checkBoxOptions} /> </GroupItem> </GroupItem> <GroupItem> <GroupItem caption="Home Address" name="HomeAddress" visible={this.state.isHomeAddressVisible}> <SimpleItem dataField="Address" /> <SimpleItem dataField="City" /> </GroupItem> </GroupItem> </GroupItem> <GroupItem caption="Phones" name="phones-container"> <GroupItem name="phones"> { this.state.phoneOptions.map((phone, index) => <SimpleItem key = {`Phones${ index}`} dataField={`Phones[${index}]`} editorOptions={phone}> <Label text={`Phone ${ index + 1}`} /> </SimpleItem> )} </GroupItem> <SimpleItem itemType="button" horizontalAlignment="left" cssClass="add-phone-button" buttonOptions={this.addPhoneButtonOptions}> </SimpleItem> </GroupItem> </Form> </div> </React.Fragment> ); } getPhonesOptions() { var options = []; for (var i = 0; i < this.employee.Phones.length; i++) { options.push(this.generateNewPhoneOptions(i)); } return options; } generateNewPhoneOptions(index) { return { mask: '+1 (X00) 000-0000', maskRules: { 'X': /[01-9]/ }, buttons: [{ name: 'trash', location: 'after', options: { stylingMode: 'text', icon: 'trash', onClick: () => { this.employee.Phones.splice(index, 1); this.updatePhones(); } } }] }; } updatePhones() { this.setState({ phoneOptions: this.getPhonesOptions() }); } } export default App;