Mongoose 从 subDocument 中检索数组

Question

我正在尝试获取给定用户拥有的所有股票的数组。

...

const user = await User.findById(verified._id);
if (!user) {
  return next(new ErrorLibrary('No user found', 401));
}

这是我用于检索用户 ID 的代码。下一步（我坚持）是获取与用户对应的所有股票的数组。

我已尝试关注

const stock = await User.stocks.findById(req.params.id);
if (!stock) {
  return next(new ErrorLibrary('No stock found', 401));
}

OUTPUT: 
"Cannot read properties of undefined (reading 'findById')"

[
  {
    "_id":"61534b363e5f39d6ce2c2c57",
    "firstName":"firstname",
    "lastName":"lastname",
    "email":"email",
    "password":"$2a$10.......",
    "tokenVersion":0,
    "stocks":[
      {
        "ticker":"TEST",
        "lots":[
          {
            "per_share_cost":1220,
            "quantity":2,
            "_id":"6153608867fae1373d272a4a",
          }
        ],
        "_id":"6153608867fae1373d272a49"
      }
    ],
    "__v":0
  }
]

Answer 1

试一试

await User.find({applyYourConditionHere});