Question 117735 in Mongodb Question posted in
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Mongodb – type 'ObjectId' is not a subtype of type 'String' of 'value'

I am trying to insert a document into my Mongo Database using the package mongo_dart

  var db = await Db.create(MONGO_CONN_STRING);
  await db.open();
  var coll = db.collection('reports');
  await coll.insertOne({
    "username": "Tom",
    "action": "test",
    "dateTime": "today",
  });

Runtime error on line 4

Unhandled Exception: type 'ObjectId' is not a subtype of type 'String' of 'value'

Is it an issue with the package or is something wrong with my code?

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3

Answers


  1. 0

    try this one

    var db = await Db.create(MONGO_CONN_STRING);
  await db.open();
  var coll = db.collection('reports');
  await coll.insertOne({
    "username": "Tom",
    "action": "test",
    "dateTime": "today",
  }).toList();
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  2. 0

    Are you using the latest version of the package?

    I think your problem is related to this issue in the GitHub Repo of the package but it is closed at Jul 25, 2015.

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  3. 0

    The error is arising because you declared variables db and (collection name) outside the static connect() async function; declare them inside the function.

      var db = await Db.create(MONGO_CONN_STRING);
  await db.open();
  var coll = db.collection('reports');
  await coll.insertOne({
    "username": "Tom",
    "action": "test",
    "dateTime": "today",
  });


static connect() async {
var db = await Db.create(MONGO_CONN_STRING);
  await db.open();
  var coll = db.collection('reports');
  await coll.insertOne({
    "username": "Tom",
    "action": "test",
   "dateTime": "today",
  });
}
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