No implementation of method: :post-insert of protocol: #'toucan.models/IModel found for class: nil

[oxymor0n]

• @camsaul

based on metabase/metabase#6295 and my own experience trying to get Metabase to connect to a pgpool-managed Postgresql cluster, it seems like there is a problem with how Toucan builds SQL queries, which leads to the above error when such queries are executed against pgpool.

Maybe Toucan is trying to leverage a feature of Postgres that pgpool doesn't support?

Or perhaps Toucan is working correctly but Metabase is not implementing it right?

[camsaul]

@oxymor0n that could be the case. I don't have a ton of experience using pgpool. If you manage to diagnose the issue a PR is welcome

[camsaul]

See metabase/metabase#6295 (comment) -- this is an issue with PgPool returning a different key than normal PostgreSQL does