react-cookie

react-cookie

Universal cookies for React

Integrations

• universal-cookie - Universal cookies for JavaScript
• universal-cookie-express - Hook cookies get/set on Express for server-rendering

Getting started

npm install react-cookie

<CookiesProvider />

Set the user cookies

On the server, the cookies props must be set using req.universalCookies or new Cookie(cookieHeader)

withCookies(Component)

Give access to cookies by providing it using the cookies prop.

Cookies

get(name, [options])

Get a cookie value

• name (string): cookie name
• options (object):
  • doNotParse (boolean): do not convert the cookie into an object no matter what

getAll([options])

Get all cookies

• options (object):
  • doNotParse (boolean): do not convert the cookie into an object no matter what

set(name, value, [options])

Set a cookie value

• name (string): cookie name
• value (string|object): save the value and stringify the object if needed
• options (object): Support all the cookie options from RFC 6265
  • path (string): cookie path, use / as the path if you want your cookie to be accessible on all pages
  • expires (Date): absolute expiration date for the cookie
  • maxAge (number): relative max age of the cookie from when the client receives it in second
  • domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com)
  • secure (boolean): Is only accessible through HTTPS?
  • httpOnly (boolean): Is only the server can access the cookie?

remove(name, [options])

Remove a cookie

• name (string): cookie name
• options (object): Support all the cookie options from RFC 6265
  • path (string): cookie path, use / as the path if you want your cookie to be accessible on all pages
  • expires (Date): absolute expiration date for the cookie
  • maxAge (number): relative max age of the cookie from when the client receives it in second
  • domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com)
  • secure (boolean): Is only accessible through HTTPS?
  • httpOnly (boolean): Is only the server can access the cookie?

Simple Example

import React, { Component } from 'react';
import { instanceOf } from 'prop-types';
import { CookiesProvider, withCookies, Cookies } from 'react-cookie';

import NameForm from './NameForm';

class App extends Component {
  static propTypes = {
    cookies: instanceOf(Cookies).isRequired
  };

  componentWillMount() {
    const { cookies } = this.props;

    this.state = {
      name: cookies.get('name') || 'Ben'
    };
  }

  handleNameChange(name) {
    const { cookies } = this.props;

    cookies.set('name', name, { path: '/' });
    this.setState({ name });
  }

  render() {
    const { name } = this.state;

    return (
      <CookiesProvider>
        <NameForm name={name} onChange={this.handleNameChange.bind(this)} />
        {this.state.name && <h1>Hello {this.state.name}!</h1>}
      </CookiesProvider>
    );
  }
}

export default withCookies(App);

Server-Rendering Example

// src/components/App.js
import React, { Component } from 'react';
import { instanceOf } from 'prop-types';
import { withCookies, Cookies } from 'react-cookie';

import NameForm from './NameForm';

class App extends Component {
  static propTypes = {
    cookies: instanceOf(Cookies).isRequired
  };

  componentWillMount() {
    const { cookies } = this.props;

    this.state = {
      name: cookies.get('name') || 'Ben'
    };
  }

  handleNameChange(name) {
    const { cookies } = this.props;

    cookies.set('name', name, { path: '/' });
    this.setState({ name });
  }

  render() {
    const { name } = this.state;

    return (
      <div>
        <NameForm name={name} onChange={this.handleNameChange.bind(this)} />
        {this.state.name && <h1>Hello {this.state.name}!</h1>}
      </div>
    );
  }
}

export default withCookies(App);

// src/server.js
import React from 'react';
import ReactDOMServer from 'react-dom/server';
import { CookiesProvider } from 'react-cookie';

import Html from './components/Html';
import App from './components/App';

export default function middleware(req, res) {
  const markup = ReactDOMServer.renderToString(
    <CookiesProvider cookies={req.universalCookies}>
      <App />
    </CookiesProvider>
  );

  const html = ReactDOMServer.renderToStaticMarkup(<Html markup={markup} />);

  res.send('<!DOCTYPE html>' + html);
}

// src/client.js
import React from 'react';
import ReactDOM from 'react-dom';
import { CookiesProvider } from 'react-cookie';

import App from './components/App';

const appEl = document.getElementById('main-app');

ReactDOM.render(
  <CookiesProvider>
    <App />
  </CookiesProvider>,
  appEl
);

// server.js
require('babel-register');

const express = require('express');
const serverMiddleware = require('./src/server').default;
const cookiesMiddleware = require('universal-cookie-express');

const app = express();

app
  .use('/assets', express.static('dist'))
  .use(cookiesMiddleware())
  .use(serverMiddleware);

app.listen(8080, function() {
  console.log('Listening on 8080...'); // eslint-disable-line no-console
});