@pleio/react-polyglot

React Polyglot

Provides higher order component for using Polyglot with React.

This package is a fork of react-polyglot.

Installation

npm install --save react-polyglot

Usage

react-polyglot exports consists for one wrapper component called I18n, one decorator called translate and one hook called useTranslate. The decorator provides a prop t which is instance of Polyglot.

You are required to wrap your root component with I18n and pass on a locale like en or fr. And messages object containing the strings.

import React from 'react'
import { render } from 'react-dom'
import { I18n } from 'react-polyglot'
import App from './components/app'

const locale = window.locale || 'en'
const messages = {
  hello_name: 'Hello, %{name}.',
  num_cars: '%{smart_count} car |||| %{smart_count} cars',
}

render(
  <I18n locale={locale} messages={messages}>
    <App />
  </I18n>,
  document.getElementById('app')
)

Then inside App or a child component of App you can do:

import React from 'react'
import { translate } from 'react-polyglot'

const Greeter = ({ name, t }) => <h3>{t('hello_name', { name })}</h3>

Greeter.propTypes = {
  name: React.PropTypes.string.isRequired,
  t: React.PropTypes.func.isRequired,
}

export default translate(Greeter)

or with React Hooks:

import React from 'react';
import { useTranslate } from 'react-polyglot';

export default const Greeter = ({ name }) => {
  const t = useTranslate();

  return (
    <h3>{t('hello_name', { name })}</h3>
  );
};

Greeter.propTypes = {
  name: React.PropTypes.string.isRequired
};

Live Examples

Minimal example using class components

https://codesandbox.io/s/mq76ojk228

Advance example with user changeable locales

https://codesandbox.io/s/px8n63v0m

How to provide context in your tests

Use a simple helper to wrap your components in a context.

export const wrapWithContext = function(component, context, contextTypes) {
  const wrappedComponent = React.createClass({
    childContextTypes: contextTypes,
    getChildContext() {
      return context
    },
    render() {
      return component
    },
  })
  return React.createElement(wrappedComponent)
}

Then use it inside your tests.

import React from 'react'
import { renderToString } from 'react-dom/server'
import Polyglot from 'node-polyglot'
import Greeter from './greeter'
import { wrapWithContext } from './helpers'

const polyglot = new Polyglot({
  locale: 'en',
  phrases: { hello_name: 'Hello, %{name}.' },
})

const greeterWithContext = wrapWithContext(
  <Greeter name="Batsy" />,
  { t: polyglot.t.bind(polyglot) },
  { t: React.PropTypes.func }
)

// use greeterWithContext in your tests
// here it is shown how to use it with renderToString
console.log(renderToString(greeterWithContext))

Work in progress

Tests and Contributing guides are in progress.

Release History

• 0.6.2 (publicJorn) Updated release notes.
• 0.6.1 (publicJorn) Fixed prop-type warning in example.
• 0.6.0 (publicJorn) Added useTranslate (by @soda0289) and tests (by publicJorn).
• 0.5.0 (publicJorn) Removed componentWillReceiveProps in I18n. Change translate api to translate(Component).
• 0.2.6 Add React v16 as a peer dependency PR#12.
• 0.2.5 Prevent creation of multiple instances on receiving new props PR#9.
• 0.2.4 Add a section on 'How to provide context in tests' PR#10.
• 0.2.3 Add prop-types and start using that instead of React.PropTypes PR#6.
• 0.2.2 Add babel-cli for the commonjs build.
• 0.2.1 Add 'files' to keep in the package.
• 0.2.0 Update the I18n component when the locale changes.
• 0.1.0 Initial Release.