How to push and use arrayElemAt in one query

Working with Data Drivers & ODMs
,
#1

Hi, I’m using go mongodb driver for my app but I can’t use push and arrayElemAt in one query.
I have this document:

_id: "123"
records: [
  { status: "created" },
]
price: 10
price_table: [
  {
     price: 10
  },
  {
    price: 20
  }
],
updated_at: (timestamp)

I want to add a new entry to record array, set the price based on an entry in price table, and update updated_at.
I have tried:

err := collection.FindOneAndUpdate(
		ctx,
		bson.M{ "_id":         req.ID},
		[]interface{}{
			bson.M{
				bson.M{
					"$push": bson.M{
						"records": domain.StatusHistory{
							Status:  "in_progress",
						},
				},
			},
			bson.M{
				"$set": bson.M{
					"price": bson.M{
						"$arrayElemAt": bson.A{"$price_table.price", 1},
					},
					"updated_at":         time.Now(),
				},
			},
		},
		&opt,
	)

but it returns the error “Unrecognized pipeline stage name: ‘$push’”
I have also not used pipeline but it also has the error “The dollar prefixed field arrayElemAt is not valid for storage”
Please advise if I can make it to 1 query or if 2 query is unavoidable.
Thanks

#2

I can’t seem to edit my post, but I want to say that I’ve removed the duplicate bson.M and its still the same error

				bson.M{
					"$push": bson.M{
						"records": domain.StatusHistory{
							Status:  "in_progress",
						},
				},