Nette\Database\Table\Selection::saveCacheState PHP Метод

    protected function saveCacheState()
    {
        if ($this->observeCache === $this && $this->cache && !$this->sqlBuilder->getSelect() && $this->accessedColumns !== $this->previousAccessedColumns) {
            $previousAccessed = $this->cache->load($this->getGeneralCacheKey());
            $accessed = $this->accessedColumns;
            $needSave = is_array($accessed) && is_array($previousAccessed) ? array_intersect_key($accessed, $previousAccessed) !== $accessed : $accessed !== $previousAccessed;
            if ($needSave) {
                $save = is_array($accessed) && is_array($previousAccessed) ? $previousAccessed + $accessed : $accessed;
                $this->cache->save($this->getGeneralCacheKey(), $save);
                $this->previousAccessedColumns = NULL;
            }
        }
    }