Александр

foreach($_POST['Rooms'] as $room)
      {
        $roomModel = new Rooms();
        $roomModel->setAttributes($room, true);
        $roomModel->hotel = $model;
        $roomModel->save();
      }

If there is already a header with the same name, the new one will be appended to it instead of replacing it.

The property sortable determines whether the grid view can be sorted according to this column. Note that the name should always be set if the column needs to be sortable. The name value will be used by CSort to render a clickable link in the header cell to trigger the sorting.