How to remove array element in mongodb?

Question

Here is array structure

contact: {
    phone: [
        {
            number: \"+1786543589455\",
            place: \"New Jersey\",
            createdAt: \         


        

Answer 1

You can simply use $pull to remove a sub-document. The $pull operator removes from an existing array all instances of a value or values that match a specified condition.

Collection.update({
    _id: parentDocumentId
  }, {
    $pull: {
      subDocument: {
        _id: SubDocumentId
      }
    }
  });

This will find your parent document against given ID and then will remove the element from subDocument which matched the given criteria.

Read more about pull here.