Getting error while filtering record based on time

Question

I have few record for a user in my collection. For that record insertion time is in toISOString format. I am trying to ignore the record which is more than 3 days old using find query but getting some error.

error: error in query: fail to parse content of query: invalid character '.' after array element

myRecord:

[
  {
    "_id": "1",
    "name": "user1",
    "data":"some data",
    "insertionTime": "2020-11-10T10:18:27.158Z",
  },
  {
    "_id": "2",
     "name": "user1",
    "data":"some data"
    "insertionTime": "2020-11-10T14:18:27.158Z",
  },
  {
    "_id": "3",
     "name": "user1",
    "data":"some data",
    "insertionTime": "2020-11-06T14:18:27.158Z",
  }
]

expected output:

[
  {
    "_id": "2",
     "name": "user1",
    "data":"some data",
    "insertionTime": "2020-11-10T14:18:27.158Z",
  },
  {
    "_id": "3",
     "name": "user1",
    "data":"some data",
    "insertionTime": "2020-11-10T14:18:27.158Z",
  }
]

Query i tried:

db.collection.find({ $expr: { $and: [ { $eq: ['$name', 'user1'] }, { $gte: [ { $dateFromString: { dateString: '$insertionTime' } }, new Date(Date.now() - 3 * 24 * 60 * 60 * 1000), ], }, ], }, });

Can someone help me to resolve this?

Answer 1

Error is in this line new Date(Date.now() - 3 * 24 * 60 * 60 * 1000)

You have to use $subtract to perform subtraction.

db.collection.find({
  $expr: {
    $and: [
      {
        $eq: [
          "$name",
          "user1"
        ]
      },
      {
        $gte: [
          {
            $dateFromString: {
              dateString: "$insertionTime"
            }
          },
          {
            "$subtract": [
              new Date(Date.now()),
              259200000
            ]
          }
        ]
      }
    ]
  }
})

Playground