mongoose modify all elements in array
// Playground: https://mongoplayground.net/p/-TgGWwBd5l-
db.collection.update({
"_id": "password"
},
{
"$inc": {
"waitlist.$[].queue_place": -1
}
})
// Database
/*
[
{
"_id": "password",
"waitlist": [
{
"_id": "adasd",
"queue_place": 123
},
{
"_id": "ada43sd",
"queue_place": 2
}
]
}
]
*/updating an array of object in mongoose
Person.update(
{
_id: 5,
grades: { $elemMatch: { grade: { $lte: 90 }, mean: { $gt: 80 } } }
},
{ $set: { "grades.$.std" : 6 } }
)mongoose update array in object
Person.findOneAndUpdate({_id: id},
{
"$set": {[`items.$[outer].${propertyName}`]: value}
},
{
"arrayFilters": [{ "outer.id": itemId }]
},
function(err, response) {
...
})Copyright © 2021 Codeinu
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