Arcanedev\Localization\Middleware\LocaleSessionRedirect::handle PHP Метод

    public function handle(Request $request, Closure $next)
    {
        $segment = $request->segment(1, null);
        $locale = session('locale', null);
        if (localization()->isLocaleSupported($segment)) {
            session()->put(['locale' => $segment]);
            return $next($request);
        } elseif (localization()->isDefaultLocaleHiddenInUrl()) {
            $locale = localization()->getDefaultLocale();
            session()->put(compact('locale'));
        }
        if (is_string($locale) && !$this->isDefaultLocaleHidden($locale)) {
            session()->reflash();
            $redirect = $this->getLocalizedRedirect($locale);
            if (!is_null($redirect)) {
                return $redirect;
            }
        }
        return $next($request);
    }