SSR support

Since version SDK v5.30.0, TolgeeProvider has ssr property, where you can pass language and optionally staticData. TolgeeProvider will then ensure, that tolgee instance is switched to this language for the first render immediately and loads static data directly into cache. Everything is then prepared for SSR rendering.

Loading correct locale and static data is a operation that needs to be performed on the server and it's implementation depends on used framework.

const tolgee = Tolgee()
  .use(DevTools())
  .use(FormatSimple())
  .init({
    defaultLanguage: 'en',
  })

const App = () => {
  // this needs to work on server
  const language = ?
  const staticData = ?

  return (
    <TolgeeProvider
      tolgee={tolgee}
      ssr={{
        language,
        staticData
      }}
    >
      ...
    </TolgeeProvider>
  )
}

Language changing

When we use SSR, we have to specify language in a way that is detectable by both client and server. There are basically two ways - either use cookie or include locale information directly in the url.

Then for language change we use the native way of the framework.