Mongo Ruby Driver bulk updates of embedded documents

array_of_embedded_docs.rb

## Resources used to create this query
# https://docs.mongodb.com/ruby-driver/current/tutorials/ruby-driver-crud-operations/#updating
# https://docs.mongodb.com/manual/reference/operator/update/positional-filtered/

ProductCollection.with(client: :background) do |klass|
  klass.collection.update_many(
      {"product_references" => {"$exists" => true}}, # ensure that the `product_references` field exists
    { "$set" => { "product_references.$[elem].listed" => true } }, # says "update all documents matching the array filters below"
    {
    # this `array_filters` allows you to set conditions on a field that is an array. The "elem" name is arbitrary and only needs to be the same everywhere it is used
            array_filters: [ { "elem._id" => {"$in" => [BSON::ObjectId('5551207ed559303aee0007d0'),
                                                     BSON::ObjectId('53aca0f9e694aadaaf000350'),
                                                     BSON::ObjectId('53aca0e8d559309273000316'),
                                                     BSON::ObjectId('55512032bbddbd159c000761'),
                                                     BSON::ObjectId('5551206bd55930ceca0006bc'),
                                                     BSON::ObjectId('53aca10ad559304657000446'),
                                                     BSON::ObjectId('53aca104bbddbdc777000423')]} } ]
          }
  )
end