$pull from nested array

Question

I have the following document structure. I'm trying to remove components from the components array with $pull. I can't work out how to select "mast" or "commsbox" from the following document.

{
    "_id" : ObjectId("23456yujbvfdfg"),
    "d": 1234567,
    "components" : [
        [
            "mast",
            {
                "foo":"bar"
            }
        ],
        [
            "commsbox",
            {
                "BLARN": "bAAA"
            }
        ]
    ]
}

I've tried

db.sites.update({components: {$exists: true}, {$pull: { components.mast: {$exists: true} } }  }).pretty();

but I'm not able to select the component correctly.

Ashh · Accepted Answer · 2019-02-05 03:31:32Z

1

You need to use $ operator to $pull from nested array

db.sites.update(
  { "components": { "$exists": true }},
  { "$pull": { "components.$": "mast" }}
)

answered Feb 5, 2019 at 3:31

Ashh

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