Javascript Can'；t通过mongodb中的筛选器（）获取数据

我正试图通过此链接查找分配给用户的任务

router.get('/all', auth, async (req, res) => {
  try {
    const assignments_raw = await Assignment.find({listP: listP.indexOf(req.user.userId)})
    res.json(assignments_raw)
  } catch (e) {
    res.status(500).json({ message: 'Something went wrong, try again' })
  }
})

具体来说，此行应该在listP字段中找到所有具有与用户ID对应的元素的任务

 const assignments_raw = await Assignment.find({listP: listP.indexOf(req.user.userId)})

但这会导致错误，为什么？ 下面是芒果的摘录 你可以这样做

router.get('/all', auth, async (req, res) => {
  try {
    const assignments_raw = await Assignment.find()
    let assignments = []
    assignments_raw.map(assignment => {
          if (assignment.listP.indexOf(req.user.userId) !== -1) {
              assignments.push(assignment)
          }


        }
        )
    res.json(assignments)
  } catch (e) {
    res.status(500).json({ message: 'Something went wrong, try again' })
  }
})

---

但这会导致一个错误：什么错误？逻辑不起作用@prasad_您尝试的逻辑是什么？试图查找

req.user.userId

是否在数组

listP

中？是@普拉萨德！看看怎么做。