Fixes#5352 . This updates the example updating react-i18next to v8.0.6, replacing the `translate` HOC to `withNamespaces` and `I18n` to `NamespacesConsumer`.
There is one thing that I am not sure if is correct or not so I need some guidance. You gotta wrap the page with the `withI18next` HOC so it will extend the `getInitialProps` of the page with this:
```
Extended.getInitialProps = async (ctx) => {
const composedInitialProps = ComposedComponent.getInitialProps
? await ComposedComponent.getInitialProps(ctx)
: {}
const i18nInitialProps = ctx.req
? i18n.getInitialProps(ctx.req, namespaces)
: {}
return {
...composedInitialProps,
...i18nInitialProps
}
}
```
The problem lies in `i18n.getInitialProps` that has this code:
```
i18n.getInitialProps = (req, namespaces) => {
if (!namespaces) namespaces = i18n.options.defaultNS
if (typeof namespaces === 'string') namespaces = [namespaces]
req.i18n.toJSON = () => null // do not serialize i18next instance and send to client
const initialI18nStore = {}
req.i18n.languages.forEach((l) => {
initialI18nStore[l] = {}
namespaces.forEach((ns) => {
initialI18nStore[l][ns] = (req.i18n.services.resourceStore.data[l] || {})[ns] || {}
})
})
return {
i18n: req.i18n, // use the instance on req - fixed language on request (avoid issues in race conditions with lngs of different users)
initialI18nStore,
initialLanguage: req.i18n.language
}
}
```
In my understanding, among other things, it gets the `i18n` object from the request (included by the `server.js`) and uses the data to create `initialI18nStore` and `initialLanguage`, and then return these two objects plus the `i18n` object itself. If you add the `i18n` object on the return, then there will be a crash on the client-side render of the page:
```TypeError: Cannot read property 'ready' of null```
I don't know why, but returning it breaks `NamespacesConsumer` component from `react-i18next` (the state becomes null). So I commented this line and the provider on `_app.js` is getting the `i18n` instance from the `i18n.js` file (the same as `server.js`). I don't know if this would be an issue so I would like help to debug this.
- simplify pages by introducing withI18next hoc
- add Trans component example
- replace <div> with <p> in demo components to make text on pages easier to read
German translation by @marinaroot
