Neat. Not surprising to see yet another excellent thing from Dan Webb!. With the latest stuff I've been I doing I've taking to just the writing the javascript statically. Actions render :json (or just html fragments) and the ajax callbacks on the other side put things together. With a good dose of prototype javascript isn't that bad. And I can write better unit tests for my static javascript than I can for generated javacscript.
Fred
page.select("##{params[:id]}parents").any(elem){|elem|.replace_html 'blah'}
page.select will return a collection of dom elements that match a css selector, so the first part of that line is selecting the element with id='xparents'
The second half of the line (*.any(){}) translates to a javascript iterator on the returned collection. I have not tested that particular code but I've used rjs like it to conditionally update the browser in the past.
Keep up to date with Rails on Twitter and This Week in Rails
Policies: Conduct, License, Maintenance, Security, Trademarks