How do I Remove a Specific Object from an Array in MongoDB?

MongoDB: Removing a Specific Object from an Array

In MongoDB, you can remove a specific object from an array within a document. To accomplish this, you'll need to utilize the $pull operator.

The syntax for the $pull operator when removing an entire object from an array is as follows:

{ $pull: { arrayName: { property: value } } }

In the provided example, you're attempting to remove the item with an id of 23 from the items array within the document with the _id of 5150a1199fac0e6910000002. However, your original approach is incorrect as you were attempting to use the pull operator on a field (id) rather than on the desired object.

To correctly remove the entire object from the array, you need to use the following query:

db.mycollection.update(
    { '_id': ObjectId("5150a1199fac0e6910000002") }, 
    { $pull: { items: { id: 23 } } },
    false, // Upsert
    true, // Multi
);

This query will remove the item with an id of 23 from the items array within the specified document.

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