Why boto3.resource("dynamodb") does not have transact_write_items?

[lays147]

Hi.
I'm writing an application using boto3 resource for DynamoDB to avoid writing the type of my attributes. So far so good, until I needed the transact_write_items operation to validate some business rules of a put_item operation. And this operation is only available in the boto3.client("dynamodb").
So it raises the question of why this feature is not available within the resource? I wouldn't like to set up two clients in my app just for this case of a transaction.

[stobrien89]

Hi @lays147,

Thanks for reaching out! The DynamoDB resource model contains most of the core DynamoDB operations, but has not received any updates since 2016. The transact_write_items operation was introduced in 2018. Marking this as a feature request— We'll definitely consider updating the model depending on how much traction this gets.

To work around this, you could access the meta client on the resource— This will give you access to all of the client operations available to DynamoDB:

import boto3 

resource = boto3.resource('dynamodb')

response = resource.meta.client.transact_write_items(TransactItems=[])

Hope this helps!

[tim-finnigan]

I'm going to close this as a duplicate of a request made earlier last year in botocore: boto/botocore#2373