Nette\Database\Table\GroupedSelection::insert PHP Method

    public function insert($data)
    {
        if ($data instanceof \Traversable && !$data instanceof Selection) {
            $data = iterator_to_array($data);
        }
        if (Nette\Utils\Arrays::isList($data)) {
            foreach (array_keys($data) as $key) {
                $data[$key][$this->column] = $this->active;
            }
        } else {
            $data[$this->column] = $this->active;
        }
        return parent::insert($data);
    }