这是我在mongo中的文档:"calendar":{"_id":"5cd26a886458720f7a66a3b8","hotel":"5cd02fe495be1a4f48150447","calendar":[{"_id":"5cd26a886458720f7a66a413","date":"1970-01-01T00:00:00.001Z","rooms":[{"_id":"5cd26a886458720f7a66a415","room":"5cd17d82ca56fe43e24ae5d3","price":"","remaining":0,"reserved":0},{"_id"