[英]MongoDb update multiple objects from array
I have a document with the following fields: 我有一个包含以下字段的文档:
{
"_id": 1,
"codes": [
{"name": "code1", "active": null, "disabled": false},
{"name": "code2", "active": null, "disabled": false},
{"name": "code3", "active": null, "disabled": false},
{"name": "code4", "active": null, "disabled": false},
{"name": "code5", "active": null, "disabled": false},
{"name": "code6", "active": null, "disabled": false}
]
}
Is there any way to update just the objects that have the name
value equal to "code2", "code3" and "code4"? 有什么方法可以只更新
name
值等于“ code2”,“ code3”和“ code4”的对象?
For example: 例如:
db.collection.update(
{"_id": 1},
{
$set: {
"codes": [
{"name": "code2", "active": false, "disabled": true},
{"name": "code3", "active": true, "disabled": false},
{"name": "code4", "active": null, "disabled": true}
]
}
}
)
Expected result: 预期结果:
{
"_id": 1,
"codes": [
{"name": "code1", "active": null, "disabled": false},
{"name": "code2", "active": false, "disabled": true},
{"name": "code3", "active": true, "disabled": false},
{"name": "code4", "active": null, "disabled": true},
{"name": "code5", "active": null, "disabled": false},
{"name": "code6", "active": null, "disabled": false}
]
}
Actual result: 实际结果:
{
"_id": 1,
"codes": [
{"name": "code2", "active": false, "disabled": true},
{"name": "code3", "active": true, "disabled": false},
{"name": "code4", "active": null, "disabled": true}
]
}
You cannot achieve this in one query, however you can loop on your array of updates, and perform updates for element matching condition in codes array : 您无法在一个查询中实现此目的,但是可以循环执行更新数组,并针对代码数组中的元素匹配条件执行更新:
var updatesArray = [
{"name": "code2", "active": false, "disabled": true},
{"name": "code3", "active": true, "disabled": false},
{"name": "code4", "active": null, "disabled": true}
]
updatesArray.forEach(function(newCode){
db.getCollection("collection").update(
{_id:1},
{$set:{
"codes.$[subcode].active":newCode.active,
"codes.$[subcode].disabled":newCode.disabled}
},
{ multi: true,
arrayFilters: [ { "subcode.name": newCode.name } ]
}
)
})
Use this command to achieve 使用此命令来实现
db.collection.update( {
"_id": 1,
"codes.name":{$in:{"code2","code3","code4"}}
},{$set:{"codes.$.active":true}})
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