Checking used_input?/1 on inputs_for/1?

Hey I’d like to bump this post regarding using inputs_for on a required attribute referring to an embedded schema and showing validation errors when left empty, but only when considered “used” in LiveView 1.0 terms.

I’m running into this again and I, sincerely, cannot find any example or documentation to the effect.

While searching now I found this post on the forum (non Ash) where the poster @smon also attempted to show the errors manually within the inputs_for but faced the issue of the error message showing upon first validation, i.e. before it was “used” in the sense of used_input?/1 (that was not LiveView 1.0 I would guess).

For now I’m just showing the error from the first validation but I’m getting questions about it.