Dimsav\Translatable\Translatable::scopeTranslatedIn PHP 메소드

    public function scopeTranslatedIn(Builder $query, $locale = null)
    {
        $locale = $locale ?: $this->locale();
        return $query->whereHas('translations', function (Builder $q) use($locale) {
            $q->where($this->getLocaleKey(), '=', $locale);
        });
    }