Mongo使用$运算符针对多个条件更新数组子元素

Question

I have following data in my mongo collection:

{
    "services" : [ 
        {
            "service" : "service1",
            "instanceId" : 0,
            "attributes" : {
                "attr" : {
                    "value" : "val1"
                }
            }
        }, 
        {
            "service" : "service1",
            "instanceId" : 1,
            "attributes" : {
                "attr" : {
                    "value" : "val2"
                }
            }
        }, 

    ]
}

and I am trying to run following query to update data of instanceid 1, using $ operator:

db.device.update({"services.service":"service1", "services.instanceId":1},{"$set":{"services.$.attributes.attr.value":"val3"}},{})

But this query always updates instance id 0 of array. I am not able to find any other way to update this.

Answer 1

Use $elemMatch to target the array element matching on multiple conditions.

Something like

db.device.update(
  {"services":{"$elemMatch":{"service":"service1", "instanceId":1}}},
  {"$set":{"services.$.attributes.attr.value":"val3"}}
)

Answer 2

Update :

Try this:

db.runCommand({
   update:"sample", //provide collection name here
   updates:[{q:{}, u:{$set:
    {"services.$[element].attributes.attr.value":"val3"}}, arrayFilters: [ { 
     "element.instanceId": 1, "element.service": "service1" } ], multi:true}]  
 })

or this:

db.sample.update(
 {},
 {$set:{"services.$[element].attributes.attr.value":"val3"}},
 {arrayFilters: [ { "element.instanceId": 1, "element.service": "service1" } 
 ], multi:true}

)

Thanks to @mickl for the comments and info.