Fenos\Notifynder\Models\Notification::scopeByCategory PHP Méthode

    public function scopeByCategory($query, $category)
    {
        if (is_numeric($category)) {
            return $query->where('category_id', $category);
        }
        return $query->whereHas('body', function ($categoryQuery) use($category) {
            $categoryQuery->where('name', $category);
        });
    }