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Type:
Bug
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Resolution: Duplicate
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Priority:
Major - P3
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None
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Affects Version/s: 4.4.8
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Component/s: None
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ALL
If you attempt to update an array on a document using the dot notation the result is not correct
Given the document
{
_id: ObjectId('1234'),
myArray: [
{
someValue: false
},
{
someValue: true
}
]
}
and the operation
collection.findOneAndUpdate(new ObjectId('1234'), { $set: { 'myArray.0.someValue': true, 'myArray.1.someValue': true, } })
the result is as expected
{
_id: ObjectId('1234'),
myArray: [
{
someValue: true
},
{
someValue: true
}
]
}
But if I supply the same $set operation as part of an aggregation pipeline the result is very different
collection.findOneAndUpdate(new ObjectId('1234'), [ $set: { 'myArray.0.someValue': true, 'myArray.1.someValue': true, } ]})
The result is as follows
{
_id: ObjectId('1234'),
myArray: [
{
someValue: false,
0: { someValue: true},
1: { someValue: true},
},
{
someValue: true
0: { someValue: true},
1: { someValue: true},
}
]
}
- duplicates
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SERVER-24748 Aggregation does not provide a way to access a specific element of an array
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- Backlog
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