how to update nested array of object in mongodb - mongodb

Question

Here is my db collection in mongoDB. I am using mongoose to update the data inside the comments array
{
"author": {
"email": "user#example.com",
"userName": "John"
},
"_id": "63bc20741475b40323d6259f",
"title": "this is blog",
"description": "description",
"blogBanner": "https://github.com//routers/userRouter.js",
"views": "0",
"comments": [
{
"userId": "63b919840ae5303938fb1c17",
"comment": "first comment",
"_id": "_id:63bbdbdb7018eabb752c0e58
},
{
"userId": "63b919840ae5303938fb1c17",
"comment": "second comment",
"_id": "63bbdbdb7018eabb752ce55"
}
],
"reaction": [
{
"userEmail": "gias#gmail.com",
"react": "love"
}
],
"date": "2023-01-09T14:09:32.810Z",
"__v": 0
}
here i want to update the first comment by using comment._id: 63bbdbdb7018eabb752c0e58
how can i update the single comment by using comment._id ;
use-case : when user want to update his/her comment by using comment._id
here i want to update the first comment by using comment._id: 63bbdbdb7018eabb752c0e58
how can i update the single comment by using comment._id;
use-case : when user want to update his/her comment by using comment._id

Answer 1

Please, read the following docs:
https://www.mongodb.com/docs/manual/reference/operator/update/positional/#update-documents-in-an-array
Model.update(
{
'_id': '63bc20741475b40323d6259f',
'comments._id':'63bbdbdb7018eabb752ce55'
},
{ $set: { "comments.$.comment" : 'Edited Text' } }
)