Updating array list in Mongo DB - mongodb

Question

I want to update the Status field inside array list of Slots where id = "".
Sample data
{
"_id": ObjectId("621e816e7a938400016c5c64"),
"Resource": "abc#gmail.com",
"School": {
"Class": [
{
"Type": "ABC",
"Slots": [
{
"id": "",
"Duration": "1 week",
"Status": "Released",
"Selected": true
},
{
"id": "123",
"Duration": "1 week",
"Status": "Released",
"Selected": true
}
]
}
]
}
}
This is how I am approaching:
db.getCollection("XYZ").update({
"Resource": "abc#gmail.com",
"School.Class": {
"$elemMatch": {
"Type": "ABC",
"Slots.Status": "Released",
"Slots.id": "",
"Slots.Duration": "1 week"
}
}
},
{
$set: {
"School.Class.$[outer].Slots.$[inner].Status": "Confirmed"
}
},
{
"arrayFilters": [
{
"outer.Type": "ABC"
},
{
"inner.Duration": "1 week"
}
]
})
But it is updating the status as confirmed for the both the array list.How can I update the particular field where "Slots.id" : "" . Please forgive me in case of any misalignment or brackets missing in data

Answer 1

If I've understood correctly you are almost there, since you want to update only values where id is "" you have to add that condition into arrayFilters: "inner.id": "".
db.collection.update({
"Resource": "abc#gmail.com",
"School.Class": {
"$elemMatch": {
"Type": "ABC",
"Slots.Status": "Released",
"Slots.id": "",
"Slots.Duration": "1 week"
}
}
},
{
$set: {
"School.Class.$[outer].Slots.$[inner].Status": "Confirmed"
}
},
{
"arrayFilters": [
{
"outer.Type": "ABC"
},
{
"inner.Duration": "1 week",
"inner.id": "" // <--- This line
}
]
})
Example here