best way to re-activate a job about que HOT 2 CLOSED

Just successfully did a

.update(error_count: 0, expired_at: nil)

from que.

That update looks good to me. You're right that we should document it. Feel free to PR the docs ;)

Oh, and should I be able to access Que::ActiveRecord::Model in Rails console? I can access Que::ActiveRecord but no Que::ActiveRecord::Model (i've added my own Rails model record to be able access it for now)

I don't have experience with using it in Rails, but I believe you'd need to require 'que/active_record/model', and perhaps define the subclass from that example too (as I think you're saying you've done).

eventually giving up (is that true?).

Yeah, that's what expired_at indicates. See error handling and maximum_retry_count.

from que.