$match not finding objectID in mongoose 5.6+ - match

Question

I have checked various posts already made on this topic before , but none of the suggestion worked for me. I have seen those suggestions will not work in mongoose 5.0. I am using mongoose 5.6. I tried with find(), which is working. but I need aggregation fm for extended usage. most of the suggestions were on converting record id mongoose.Types.ObjectId() which I used . but not worked me. pl help
here is my test code.
function totalActualSale (recordId) {
Record.aggregate([
{
$match : {
'_id':mongoose.Types.ObjectId(recordId),
}
},
{
$unwind: { "path": '$SalesList'}
},
{ $group:
{_id:
{
item:"$SalesList.item",
},
pqty: { $sum: '$SalesList.pqty' },
}
},
], function (err, purc) {
console.log("\nStock:"+ JSON.stringify(purc));
});
}

Answer 1

try this :
function totalActualSale (recordId) {
Record.aggregate([
{
$match : {
'_id':new mongoose.mongo.ObjectId(recordId),
}
},
{
$unwind: { "path": '$SalesList'}
},
{ $group:
{_id:
{
item:"$SalesList.item",
},
pqty: { $sum: '$SalesList.pqty' },
}
},
], function (err, purc) {
console.log("\nStock:"+ JSON.stringify(purc));
});
}

Answer 2

Actually the actual issue was just reverse. the 'recordId' passed to the function was the ObjectID of a record. so, when comparing we should convert that into string. recordId.toString(). So the solution is
function totalActualSale (recordId) {
Record.aggregate([
{
$match : {
'_id':recordId.toString(),
}
},
{
$unwind: { "path": '$SalesList'}
},
{ $group:
{_id:
{
item:"$SalesList.item",
},
pqty: { $sum: '$SalesList.pqty' },
}
},
], function (err, purc) {
console.log("\nStock:"+ JSON.stringify(purc));
});
}