zachdaniel:

I’ve just pushed two new changeset hooks (they have not been added for query, and probably won’t be any time soon).

changeset
|> Ash.Changeset.before_transaction(fn changeset -> 
  # this is a good place to do some network calls
  # or set up your action in a way that doesn't do database work, but should only happen once
end)
|> Ash.Changeset.after_transaction(fn 
  changeset, {:ok, result} -> 
    # This is a good place to potentially do some cleanup, or things that could fail but shouldn't abort a transaction
    # Additionally, you can modify the result here
  changeset, {:error, error} ->
    # You can do some handling of errors here, or also potentially *intercept* the error
    # i.e you can return `{:ok, result}`
end)