Angular Validator - PatternRule
import { PatternRule } from "devextreme/common"
Type:
To specify the regular expression that the validated field must match, set the rule's pattern configuration property.
NOTE
If you apply a pattern rule to a DateBox component, specify dateSerializationFormat so that the format of the validated value is a string.
See Also
message
Type:
Default Value: 'Value does not match pattern'
An error message can be specified as follows:
Hard-code the message
App.js- import React from 'react';
- import 'devextreme/dist/css/dx.light.css';
- import { TextBox } from 'devextreme-react/text-box';
- import {
- Validator,
- PatternRule
- } from 'devextreme-react/validator';
- class App extends React.Component {
- render() {
- return (
- <TextBox>
- <Validator>
- <PatternRule
- message="My custom message" />
- </Validator>
- </TextBox>
- );
- }
- }
- export default App;
Hide the message
App.js- import React from 'react';
- import 'devextreme/dist/css/dx.light.css';
- import { TextBox } from 'devextreme-react/text-box';
- import {
- Validator,
- PatternRule
- } from 'devextreme-react/validator';
- class App extends React.Component {
- render() {
- return (
- <TextBox>
- <Validator>
- <PatternRule
- message="" />
- </Validator>
- </TextBox>
- );
- }
- }
- export default App;
Display the editor's name in the message
App.js- import React from 'react';
- import 'devextreme/dist/css/dx.light.css';
- import { TextBox } from 'devextreme-react/text-box';
- import {
- Validator,
- PatternRule
- } from 'devextreme-react/validator';
- class App extends React.Component {
- render() {
- return (
- <TextBox>
- {/* The error message will be "Phone number does not match pattern" */}
- <Validator name="Phone number">
- <PatternRule} />
- </Validator>
- </TextBox>
- );
- }
- }
- export default App;
Feel free to share topic-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you for the feedback!
If you have technical questions, please create a support ticket in the DevExpress Support Center.