Removing an element from an array in MongoDB is a straightforward process that involves

Is there a way to delete a specific element from an array within a collection, such as the one shown below:

{
    "_id" : "Y9BBFa4c4vMiAkjbi",
    "metadata" : {
        "tags" : [
            "Anything",
            "Something",
            "More"
        ]
    }
}

For instance, in this scenario I am looking to remove the element 'Something' if it exists.

var tag = 'Something';
if (Collection.find({ 'metadata.tags': tag }).count()) {
    Collection.update(
        { _id: id },
        { $pull: { 'metadata.tags': tag } }
    );
}

Answer №1

Ensure that your $pull specifically targets the element in the array you wish to delete:

Collection.update({ _id: id },
    { $pull: { 'metadata.tags': { $eq: "Something" }}}
);

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