Observe_form without an update parameter

I’m using observe_form in a place that does not require any response
from the server. So I do not use an update paramater. But without it
webbrick hangs for a couple seconds and returns a status 500. On
occasion, there will even be an exception in webbrick’s output if I
change the form then quickly click a link before the couple second hang
is done. If a add an update, it goes fast and returns status 200.

It seems it shouldn’t be necesary to have an update and an empty div for
a action that always calls render :nothing => true

Is this a bug or am I missing something?


Jack C.