Delete a value in a collection Mongo. Example attached - mongodb

Question

I have this document inside a collection in Mongo and I would like to delete the "7552" : "RTEST" in de bakendData and "7552" in data. How could do it using commands?
{
"_id" : ObjectId("xxxxxx"),
"contractId" : "55528fxxxxxxxxxxxx",
"field1": [
{
"name":"example",
"backendData": {
"map": {
"7552" : "RTEST",
"3511" : "TESTR",
"5312" : "JKTLE",
"5310" : "INVTS"
}
},
"data": {
"defaultOrder": [
"7552",
"3511",
"5312",
"5310"
]
}
}
]
}
Desired result:
{
"_id" : ObjectId("xxxxxx"),
"contractId" : "55528fxxxxxxxxxxxx",
"field1": [
{
"name":"example",
"backendData": {
"map": {
"3511" : "TESTR",
"5312" : "JKTLE",
"5310" : "INVTS"
}
},
"data": {
"defaultOrder": [
"3511",
"5312",
"5310"
]
}
}
]
}
I try something like that but it doesn't work:
db.collection.update(
{ contractId: "55528..............." },
{ $pull: {field1: [ { backendData: { map: {7552: "RTEST"} } }] }}
);
Also I would like to add new values. Example:
"backendData": {
"map": {
"3511" : "TESTR",
"5312" : "JKTLE",
"5310" : "INVTS",
"5355" : "IRZTS",
}
},
"data": {
"defaultOrder": [
"3511",
"5312",
"5310",
"5355"
]
}
Can someone help me?
Thank in advance
I attached an image with the document in Robot 3T

Answer 1

I expect someone will provide a much shorter answer, but here's one way to remove and add the items you want with one update.
db.collection.update({
// match the doc by _id
"_id": ObjectId("55528f000000000000000000")
},
[
{ // rebuild field1
"$set": {
"field1": {
"$map": {
"input": "$field1",
"in": {
// merge what's there plus filtered map plus new object
"$mergeObjects": [
"$$this",
{ "backendData": {
"map": {
"$mergeObjects": [
{ "$arrayToObject": {
"$filter": {
"input": {
"$objectToArray": "$$this.backendData.map"
},
"as": "stuff",
"cond": {
// keep everything except object with 7552 key
"$ne": [ "$$stuff.k", "7552" ]
}
}
}
},
{ "5355": "IRZTS" }
]
}
}
},
{ "data": {
"defaultOrder": {
"$concatArrays": [
{ "$filter": {
"input": "$$this.data.defaultOrder",
"as": "someNum",
"cond": {
// keep everything except 7552
"$ne": [ "$$someNum", "7552" ]
}
}
},
[ "5355" ]
]
}
}
}
]
}
}
}
}
}
])
Try it on mongoplayground.net.