ActiveScaffold :: Wiki
Active Scaffold and JRails/j Query

to use Active with scaffold with JRails you have to use a different JQUERY_VAR than $

Iny our controllers
set ActionView::Helpers::PrototypeHelper::JQUERY_VAR = ‘jQuery’

in your layout load both prototype and jquery

<= javascript_include_tag ‘prototype’, ‘effects’, ‘jquery’ >

Lastly, make sure to tell jQuery to not conflict with Prototype over $ in your Javascript:

jQuery.noConflict();