MongoDB update Nested field

Question

In MongoDB how do you use $set to update a nested value?

For example, consider a collection people with the following document:

{
  _id: ObjectId("5a7e395e20a31e44e0e7e284"),
  name: "a",
  address: [{ street: "123", town: "bar" }]
}

How do I update the street field embedded in the address document from "123" to "Main Street"?

Answer 1

Thanks, but I found the solution :

db.collection.updateMany(
        { "address.street": "123" }, 
        { "$set": { "address.$[].street": "Main Street" } }
    )

Answer 2

Use $set along with $ postion operator like this :

db.collection.update(
        { "address.street": "123" }, 
        { "$set": { "address.$.street": "Main Street" } }
    )