I have a dbt asset that depends on another asset that ingests data. How can I use auto materialisation to build the dbt asset every time the upstream assets changes?

To achieve auto-materialization of a dbt asset when an upstream asset changes, you can use an

AutoMaterializePolicy

. According to the documentation, Dagster provides eager

AutoMaterializePolicys

which allow materializing an asset whenever its parent assets are materialized. This feature is currently marked experimental, and some of the APIs may change in the future. Here's an example of how you might define such a policy:

python from dagster import AutoMaterializePolicy, asset  @asset def upstream_asset():     # Logic for your upstream asset that ingests data     ...  @asset(auto_materialize_policy=AutoMaterializePolicy.eager(), deps=[upstream_asset]) def dbt_asset():     # Logic for your dbt asset     ...

In this example,

dbt_asset

is set to auto-materialize eagerly whenever

upstream_asset

is materialized. This means that any time

upstream_asset

changes and is materialized,

dbt_asset

will automatically be queued for materialization as well. Remember that this feature is experimental, so you should keep an eye on the documentation for any updates or changes to the API.