Dimsav\Translatable\Translatable::getFallbackLocale PHP 메소드

    private function getFallbackLocale($locale = null)
    {
        if ($locale && $this->isLocaleCountryBased($locale)) {
            if ($fallback = $this->getLanguageFromCountryBasedLocale($locale)) {
                return $fallback;
            }
        }
        return app()->make('config')->get('translatable.fallback_locale');
    }