BookStack\Services\ViewService::add PHP Метод

    public function add(Entity $entity)
    {
        if ($this->user === null) {
            return 0;
        }
        $view = $entity->views()->where('user_id', '=', $this->user->id)->first();
        // Add view if model exists
        if ($view) {
            $view->increment('views');
            return $view->views;
        }
        // Otherwise create new view count
        $entity->views()->save($this->view->create(['user_id' => $this->user->id, 'views' => 1]));
        return 1;
    }