calling controller method on selecting drop down box

hi all,

         i want to call a method in a controller by selecting a option
in drop down box.can i do it without using there any
onSelect like option which can call a method in im using
select_tag option for that drop down new to ror.guys please help

Javascript is ideal for trapping the browser events and when combined
with rails, it works quite nicely.

You do not want to use Javascript because of limitations on your
client browser? or because you do not want to write Javascript

If the latter, with rails, there are helpers that allow you to do this
easily withing your rails code.