在Mongo DB中添加和更新子阵列值
我想在Mongo DB集合“ SCDTLS”中的以下JSON结构的数组中添加值。 我需要仅在“ type”:“费用”
和“ iscurrentversion”:true
的情况下添加值。
{
"_id": ObjectId("60e71243b484cf3ec22a6845"),
"Item": "School",
"Text": "School Details",
"Types": [
{
"Type": "Library",
"Values": [
{
"IsCurrentVersion": false,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814f"),
"Value": "Physics"
}
]
}
]
},
{
"Type": "Fees",
"Values": [
{
"IsCurrentVersion": false,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814f"),
"Value": "Admission"
},
{
"_id": ObjectId("611a4f113800d6af3fc4814k"),
"Value": "Canteen"
}
]
},
{
"IsCurrentVersion": true,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814g"),
"Value": "Tution"
}
]
}
]
}
]
}
这就是我尝试的方式
db.Scdtls.update({
"Item": "School",
"Types.Type": "Fees",
"Types.Values.IsCurrentVersion": true
},
{
"$push": {
"Types.1.Values.$[].KeyWords": {
"_id": ObjectId(),
"Value": "Sports"
}
}
})
,但它也添加了“ value”:“ sports”
in “ type”:“ fee”:“ fee”
其中 “ iscurrentversion”:false < /代码>。 无法理解原因。
I want to add value in array of the following json structure in mongo db collection "Scdtls".
I need to add value only where "Type": "Fees"
and "IsCurrentVersion": true
.
{
"_id": ObjectId("60e71243b484cf3ec22a6845"),
"Item": "School",
"Text": "School Details",
"Types": [
{
"Type": "Library",
"Values": [
{
"IsCurrentVersion": false,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814f"),
"Value": "Physics"
}
]
}
]
},
{
"Type": "Fees",
"Values": [
{
"IsCurrentVersion": false,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814f"),
"Value": "Admission"
},
{
"_id": ObjectId("611a4f113800d6af3fc4814k"),
"Value": "Canteen"
}
]
},
{
"IsCurrentVersion": true,
"KeyWords": [
{
"_id": ObjectId("611a4f113800d6af3fc4814g"),
"Value": "Tution"
}
]
}
]
}
]
}
This is how I am trying
db.Scdtls.update({
"Item": "School",
"Types.Type": "Fees",
"Types.Values.IsCurrentVersion": true
},
{
"$push": {
"Types.1.Values.$[].KeyWords": {
"_id": ObjectId(),
"Value": "Sports"
}
}
})
But it is also adding "Value": "Sports"
in "Type" : "Fees"
where "IsCurrentVersion": false
.
Not able to understand the reason.
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如果我正确理解,您可以使用
“ arrayfilters”
进行更新,例如:在 mongoplayground.net 。
If I understand correctly, you can do the update you want using
"arrayFilters"
, like this:Try it on mongoplayground.net.