目前，我有一个具有“开 - 成功”处理函数LoginForm一个handleOnSuccess组件。这个然后链接到父组分与通过“令牌更新”处理函数onTokenUpdate定义的handleUpdateToken属性。问题是，在setState功能handleUpdateToken迫使不希望重新呈现。
我最终需要的是更新成功获取值的LoginForm组件属性token不执行重新呈现。这甚至可能吗？据React: Update Child Component Without Rerendering Parent又好像不是，但是，我的情况下，没有可行的替代建议。我想知道如果任何人有任何建议的替代方案，如果这是不可能的。
LoginForm.react.js：import React, { Component } from 'react';
import Script from 'react-load-script';
import PropTypes from 'prop-types';
class LoginForm extends Component {
constructor(props) {
super(props);
this.state = {
linkLoaded: false,
initializeURL: 'https://cdn.plaid.com/link/v2/stable/link-initialize.js',
};
this.onScriptError = this.onScriptError.bind(this);
this.onScriptLoaded = this.onScriptLoaded.bind(this);
this.handleLinkOnLoad = this.handleLinkOnLoad.bind(this);
this.handleOnExit = this.handleOnExit.bind(this);
this.handleOnEvent = this.handleOnEvent.bind(this);
this.handleOnSuccess = this.handleOnSuccess.bind(this);
this.renderWindow = this.renderWindow.bind(this);
}
onScriptError() {
console.error('There was an issue loading the link-initialize.js script');
}
onScriptLoaded() {
window.linkHandler = window.Plaid.create({
apiVersion: this.props.apiVersion,
clientName: this.props.clientName,
env: this.props.env,
key: this.props.publicKey,
onExit: this.handleOnExit,
onLoad: this.handleLinkOnLoad,
onEvent: this.handleOnEvent,
onSuccess: this.handleOnSuccess,
product: this.props.product,
selectAccount: this.props.selectAccount,
token: this.props.token,
webhook: this.props.webhook,
});
console.log("Script loaded");
}
handleLinkOnLoad() {
console.log("loaded");
this.setState({ linkLoaded: true });
}
handleOnSuccess(token, metadata) {
console.log(token);
console.log(metadata);
this.props.onTokenUpdate(token);
}
handleOnExit(error, metadata) {
console.log('link: user exited');
console.log(error, metadata);
}
handleOnLoad() {
console.log('link: loaded');
}
handleOnEvent(eventname, metadata) {
console.log('link: user event', eventname, metadata);
}
renderWindow() {
const institution = this.props.institution || null;
if (window.linkHandler) {
window.linkHandler.open(institution);
}
}
static exit(configurationObject) {
if (window.linkHandler) {
window.linkHandler.exit(configurationObject);
}
}
render() {
return (
<div id={this.props.id}>
{this.renderWindow()}
<Script
url={this.state.initializeURL}
onError={this.onScriptError}
onLoad={this.onScriptLoaded}
/>
</div>
);
}
}
LoginForm.defaultProps = {
apiVersion: 'v2',
env: 'sandbox',
institution: null,
selectAccount: false,
style: {
padding: '6px 4px',
outline: 'none',
background: '#FFFFFF',
border: '2px solid #F1F1F1',
borderRadius: '4px',
},
};
LoginForm.propTypes = {
// id
id: PropTypes.string,
// ApiVersion flag to use new version of Plaid API
apiVersion: PropTypes.string,
// Displayed once a user has successfully linked their account
clientName: PropTypes.string.isRequired,
// The Plaid API environment on which to create user accounts.
// For development and testing, use tartan. For production, use production
env: PropTypes.oneOf(['tartan', 'sandbox', 'development', 'production']).isRequired,
// Open link to a specific institution, for a more custom solution
institution: PropTypes.string,
// The public_key associated with your account; available from
// the Plaid dashboard (https://dashboard.plaid.com)
publicKey: PropTypes.string.isRequired,
// The Plaid products you wish to use, an array containing some of connect,
// auth, identity, income, transactions, assets
product: PropTypes.arrayOf(
PropTypes.oneOf([
// legacy product names
'connect',
'info',
// normal product names
'auth',
'identity',
'income',
'transactions',
'assets',
])
).isRequired,
// Specify an existing user's public token to launch Link in update mode.
// This will cause Link to open directly to the authentication step for
// that user's institution.
token: PropTypes.string,
access_token: PropTypes.string,
// Set to true to launch Link with the 'Select Account' pane enabled.
// Allows users to select an individual account once they've authenticated
selectAccount: PropTypes.bool,
// Specify a webhook to associate with a user.
webhook: PropTypes.string,
// A function that is called when a user has successfully onboarded their
// account. The function should expect two arguments, the public_key and a
// metadata object
onSuccess: PropTypes.func,
// A function that is called when a user has specifically exited Link flow
onExit: PropTypes.func,
// A function that is called when the Link module has finished loading.
// Calls to plaidLinkHandler.open() prior to the onLoad callback will be
// delayed until the module is fully loaded.
onLoad: PropTypes.func,
// A function that is called during a user's flow in Link.
// See
onEvent: PropTypes.func,
onTokenUpdate: PropTypes.func,
// Button Styles as an Object
style: PropTypes.object,
// Button Class names as a String
className: PropTypes.string,
};
export default LoginForm;
App.js：// /* eslint no-magic-numbers: 0 */
import React, { Component } from 'react';
import { LoginForm } from '../lib';
class App extends Component {
constructor(props) {
super(props);
this.state = {
access_token: null
};
this.handleUpdateToken = this.handleUpdateToken.bind(this)
}
handleUpdateToken(access_token) {
this.setState({ access_token: access_token });
}
render() {
return (
<LoginForm
id="Test"
clientName="Plaid Client"
env="sandbox"
product={['auth', 'transactions']}
publicKey="7a3daf1db208b7d1fe65850572eeb1"
className="some-class-name"
apiVersion="v2"
onTokenUpdate={this.handleUpdateToken}
token={this.state.access_token}
>
</LoginForm>
);
}
}
export default App;
预先感谢任何/所有的帮助！
如果您想更新孩子的parent你不能阻止props的渲染。但是有一个方法去实现它。
token的LoginForm的stateLoginForm.This功能componentWillReceiveProps和token将有一个参数，它是从父令牌。而且里面function（如果你想改变父组件的令牌，并发送一个更新，这是必要的），你会改变this.props.onTokenUpdate(token,function);。function在父母的state不应该在token。它应该是compoent财产stateInstead render()的下面是一个普通的例子。 this.state.token
这是我落得这样做（但我接受@MaheerAli答案，因为有些人可能一直在寻找，与其）：
this.props.token:Codepen
LoginForm.js:class LoginForm extends Component {
constructor(props) {
super(props);
this.state = {
linkLoaded: false,
initializeURL: 'https://cdn.plaid.com/link/v2/stable/link-initialize.js',
};
this.onScriptError = this.onScriptError.bind(this);
this.onScriptLoaded = this.onScriptLoaded.bind(this);
this.handleLinkOnLoad = this.handleLinkOnLoad.bind(this);
this.handleOnExit = this.handleOnExit.bind(this);
this.handleOnEvent = this.handleOnEvent.bind(this);
this.handleOnSuccess = this.handleOnSuccess.bind(this);
this.renderWindow = this.renderWindow.bind(this);
}
onScriptError() {
console.error('There was an issue loading the link-initialize.js script');
}
onScriptLoaded() {
window.linkHandler = window.Plaid.create({
apiVersion: this.props.apiVersion,
clientName: this.props.clientName,
env: this.props.env,
key: this.props.publicKey,
onExit: this.handleOnExit,
onLoad: this.handleLinkOnLoad,
onEvent: this.handleOnEvent,
onSuccess: this.handleOnSuccess,
product: this.props.product,
selectAccount: this.props.selectAccount,
token: this.props.token,
webhook: this.props.webhook,
});
}
handleLinkOnLoad() {
console.log("loaded");
this.setState({ linkLoaded: true });
}
handleOnSuccess(token, metadata) {
console.log(token);
console.log(metadata);
this.props.onTokenUpdate(token);
}
handleOnExit(error, metadata) {
console.log('PlaidLink: user exited');
console.log(error, metadata);
}
handleOnLoad() {
console.log('PlaidLink: loaded');
}
handleOnEvent(eventname, metadata) {
console.log('PlaidLink: user event', eventname, metadata);
}
renderWindow() {
const institution = this.props.institution || null;
if (window.linkHandler) {
window.linkHandler.open(institution);
}
}
chooseRender() {
if (this.props.access_token === null) {
this.renderWindow()
}
}
static exit(configurationObject) {
if (window.linkHandler) {
window.linkHandler.exit(configurationObject);
}
}
render() {
return (
<div id={this.props.id}
access_token={this.props.access_token}>
{this.chooseRender()}
<Script
url={this.state.initializeURL}
onError={this.onScriptError}
onLoad={this.onScriptLoaded}
/>
</div>
);
}
}
最值得注意的是，我只是定义了选择是否要呈现格纹的孩子App.js功能。