How to rewrite nested object in model while update - mongodb

Question

I have a problem with update object nested in array ("companyBases"), because update scripts overwrites my nested object, i have the following model:
{
"_id" : ObjectId("5d6504541be1e64145c20c66"),
"margin" : 10,
"defaultDeprication" : 10,
"companyBases" : [
{
"_id" : ObjectId("5d6504541be1e64145c20c64"),
"name" : "Tech Parking 2",
"street" : "Traktat Ojca",
"postalCode" : "30-856",
"city" : "Cracow",
"location" : {
"lng" : 50.036017,
"lat" : 20.086752
},
"__v" : 0
},
{
"_id" : ObjectId("5d6504541be1e64145c20c65"),
"name" : "Tech Parking 3",
"street" : "ul.Bieżanowska 258B",
"postalCode" : "30-856",
"city" : "Cracow",
"location" : {
"lng" : 50.01744,
"lat" : 20.033522
},
"__v" : 0
}
],
}
I'am executing update query:
db.companies.updateOne(
{
_id: ObjectId("5d6504541be1e64145c20c66"),
"companyBases._id": ObjectId("5d6504541be1e64145c20c64")
},
{
$set: {
"companyBases.$": {
"street" : "ul.Małapolska 123"
}
}
}
)
But it overwrites my nested object and now it looking like this:
{
"_id" : ObjectId("5d6504541be1e64145c20c66"),
"margin" : 10,
"defaultDeprication" : 10,
"companyBases" : [
{
"street" : "ul.Małapolska 123"
},
{
"_id" : ObjectId("5d6504541be1e64145c20c65"),
"name" : "Tech Parking 3",
"street" : "ul.Bieżanowska 258B",
"postalCode" : "30-856",
"city" : "Cracow",
"location" : {
"lng" : 50.01744,
"lat" : 20.033522
},
"__v" : 0
}
],
}
I would like to rewrite all field from nested object and update fields that i choose in update query.
It should looks like this (without overwriting whole object):
{
"_id" : ObjectId("5d6504541be1e64145c20c66"),
"margin" : 10,
"defaultDeprication" : 10,
"companyBases" : [
{
"_id" : ObjectId("5d6504541be1e64145c20c64"),
"name" : "Tech Parking 2",
"street" : "ul.Małapolska 123",
"postalCode" : "30-856",
"city" : "Cracow",
"location" : {
"lng" : 50.036017,
"lat" : 20.086752
},
"__v" : 0
},
{
"_id" : ObjectId("5d6504541be1e64145c20c65"),
"name" : "Tech Parking 3",
"street" : "ul.Bieżanowska 258B",
"postalCode" : "30-856",
"city" : "Cracow",
"location" : {
"lng" : 50.01744,
"lat" : 20.033522
},
"__v" : 0
}
],
}

Answer 1

You should use arrayFilter in the update operation, as described here:
positinal filter for arrays
db.companies.updateOne(
{
_id: ObjectId("5d6504541be1e64145c20c66"),
},
{
$set: {
"companyBases.$[element].street: "ul.Małapolska 123"
}
},
{
arrayFilters: [ {"element._id": ObjectId("5d6504541be1e64145c20c64")} ]
}
)