I know this thread is showing some age but if anyone else finds it looking for an answer I believe the solution is to use the :prefix option.
For example: select_day Time.now, :field_name => 'production_day', :prefix => 'film' Produces: <select id="film_production_day" name="film[production_day]"> Nick Gal ThinkLogic -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.

