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This fixes https://github.com/zeit/next.js/issues/5260 by making sure that `index.js` has `getInitialProps` defined on the page exported component, not the child component. When fixing that, I uncovered an issue where the server side rendered HTML did not match the clientside HTML, so I reworked _app.js to use the `i18nextprovider` component which has props to hydrate the initial data (for SSR), and makes sure the correct i18n instance is passed to all child components through context. Before: ```html <!DOCTYPE html> <html> <head> <meta charSet="utf-8" class="next-head"/> <link rel="preload" href="/_next/static/development/pages/index.js" as="script"/> <link rel="preload" href="/_next/static/development/pages/_app.js" as="script"/> <link rel="preload" href="/_next/static/development/pages/_error.js" as="script"/> <link rel="preload" href="/_next/static/runtime/webpack.js" as="script"/> <link rel="preload" href="/_next/static/runtime/main.js" as="script"/> </head> <body> <div id="__next"></div> <script src="/_next/static/development/dll/dll_4a2ab6ce0cb456fbfead.js"></script><script>__NEXT_DATA__ = {"props":{"pageProps":{}},"page":"/","pathname":"/","query":{},"buildId":"development"};__NEXT_LOADED_PAGES__=[];__NEXT_REGISTER_PAGE=function(r,f){__NEXT_LOADED_PAGES__.push([r, f])}</script><script async="" id="__NEXT_PAGE__/" src="/_next/static/development/pages/index.js"></script><script async="" id="__NEXT_PAGE__/_app" src="/_next/static/development/pages/_app.js"></script><script async="" id="__NEXT_PAGE__/_error" src="/_next/static/development/pages/_error.js"></script><script src="/_next/static/runtime/webpack.js" async=""></script><script src="/_next/static/runtime/main.js" async=""></script> </body> </html> ``` After: ```html <!DOCTYPE html> <html> <head> <meta charSet="utf-8" class="next-head"/> <link rel="preload" href="/_next/static/development/pages/index.js" as="script"/> <link rel="preload" href="/_next/static/development/pages/_app.js" as="script"/> <link rel="preload" href="/_next/static/development/pages/_error.js" as="script"/> <link rel="preload" href="/_next/static/runtime/webpack.js" as="script"/> <link rel="preload" href="/_next/static/runtime/main.js" as="script"/> </head> <body> <div id="__next"> <h1>This example integrates react-i18next for simple internationalization.</h1> <div> <h1>welcome to next.js</h1> <p>This example integrates react-i18next for simple internationalization.</p> <p>test words for en</p> <div><button>fire in the wind for en</button></div> <p>You can either pass t function to child components.</p> <p>Or wrap your component using the translate hoc provided by react-i18next.</p> <p>Alternatively, you can use <code>Trans</code> component.</p> <a href="/page2">Go to page 2</a><br/><a href="/page3">Go to page 3 (no hoc)</a> </div> </div> <script src="/_next/static/development/dll/dll_4a2ab6ce0cb456fbfead.js"></script><script>__NEXT_DATA__ = {"props":{"pageProps":{"i18n":null,"initialI18nStore":{"en":{"home":{"welcome":"welcome to next.js","sample_test":"test words for en","sample_button":"fire in the wind for en","link":{"gotoPage2":"Go to page 2","gotoPage3":"Go to page 3 (no hoc)"}},"common":{"integrates_react-i18next":"This example integrates react-i18next for simple internationalization.","pureComponent":"You can either pass t function to child components.","extendedComponent":"Or wrap your component using the translate hoc provided by react-i18next.","transComponent":"Alternatively, you can use \u003c1\u003eTrans\u003c/1\u003e component."}}},"initialLanguage":"en-US"}},"page":"/","pathname":"/","query":{},"buildId":"development"};__NEXT_LOADED_PAGES__=[];__NEXT_REGISTER_PAGE=function(r,f){__NEXT_LOADED_PAGES__.push([r, f])}</script><script async="" id="__NEXT_PAGE__/" src="/_next/static/development/pages/index.js"></script><script async="" id="__NEXT_PAGE__/_app" src="/_next/static/development/pages/_app.js"></script><script async="" id="__NEXT_PAGE__/_error" src="/_next/static/development/pages/_error.js"></script><script src="/_next/static/runtime/webpack.js" async=""></script><script src="/_next/static/runtime/main.js" async=""></script> </body> </html> ```
26 lines
623 B
JavaScript
26 lines
623 B
JavaScript
import { translate } from 'react-i18next'
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import i18n from '../i18n'
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export const withI18next = (namespaces = ['common']) => ComposedComponent => {
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const Extended = translate(namespaces, { wait: process.browser })(
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ComposedComponent
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)
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Extended.getInitialProps = async (ctx) => {
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const composedInitialProps = ComposedComponent.getInitialProps
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? await ComposedComponent.getInitialProps(ctx)
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: {}
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const i18nInitialProps = ctx.req
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? i18n.getInitialProps(ctx.req, namespaces)
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: {}
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return {
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...composedInitialProps,
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...i18nInitialProps
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}
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}
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return Extended
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}
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