
mattvanhorn
Ash Framework: variable assignment mistake (page 38)
In the “Defining an update action” section
artist = Tunez.Music.get_artist_by_id!("an-artist-id")
should be:
{:ok, artist} = Tunez.Music.get_artist_by_id!("an-artist-id")
Otherwise the next line will fail with an error about resource ID
Most Liked

sevenseacat
Author of Ash Framework
Hi there!
In this case, no it shouldn’t - the bang version of a function (ie. get_artist_by_id!
vs. get_artist_by_id
) will return the object by itself, not as part of an ok
or error
tuple.
I’ll check and see if we need a note clarifying this…
2
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