node.js - 如何从mongodb中的多个值中查找

Question

MongoDB 中有一个集合，例如:

{
    "_id" : ObjectId("5bcc4c7d1e2c701be024de99"),
    "className" : "Class 10",
    "gradeLevel" : "10th",
    "subjectName" : "Math",
    "teacherId" : "abcd@gmail.com",
    "__v" : 0
},
{
    "_id" : ObjectId("5bd45277f5b9430013f4a604"),
    "className" : "Class 11",
    "gradeLevel" : "11th",
    "subjectName" : "Maths",
    "teacherId" : "abcd@gmail.com",
    "__v" : 0
},
{
    "_id" : ObjectId("5bd470fe452cb33af4b8407a"),
    "className" : "Class 10",
    "gradeLevel" : "12th",
    "subjectName" : "Math",
    "teacherId" : "abcd@gmail.com",
    "__v" : 0
},

现在我想获取那些值为 of_id 的文档:ObjectId(“5bd45277f5b9430013f4a604”)，ObjectId(“5bd470fe452cb33af4b8407a”)。

我正在使用 Mongoose 和node.js。所以请告诉我有什么办法可以做到这一点。

Answer 1

Model.find({ _id: { $in: ['5bd45277f5b9430013f4a604', '5bd470fe452cb33af4b8407a'] } })
  .then(docs => console.log(docs))
  .catch(err => console.log(err));