Locomotive and ruby-debug

Anyone had success getting ruby-debug to work with Locomotive? I've got the ruby-debug gem installed, and require 'ruby-debug' in my config file, but when I try to call the debugger from within a rails method, the app just blows right by it and nothing appears in the console.

Any help with this would be appreciated.

If Locomotive is still using lighttpd, it won't work. The best way to
do it AFAIK is just:

rdebug script/server

or if you have the debugger started in your code, just use:


The EASIEST thing is to load the Footnotes plugin. Search for it at


Then load it using the standard plugin method. From your project directory:

script/plugin install http://macromates.com/svn/Bundles/trunk/Bundles/Rails.tmbundle/Support/plugins/footnotes

Footnotes gives you extra goodness if you're using TextMate -- which you should anyway if you're trying to learn or develop in RoR on a Mac. I'm PRETTY sure it works without TextMate.

What it does is automatically place ruby-debug like information on the bottom of each rendered page. Here's what it looks like on my machine:

Edit: Controller | View | Layout | Stylesheets | Javascripts Show: Session | Cookies | Params | Log | General Debug (TextMate Footnotes)

Click on the link to show whatever and there you are! (The first line, Edit: won't work without TextMate.) All this automatically turns off when you move to Production mode.

---Jim Gagne---

Locomotive now runs on Mongrel, so this shouldn't be a problem. Footnotes looks cool, but I need to be able to stop execution at a particular point and examine/change variables. I need a...uh...breakpointer.

Anyone who knows how to get ruby-debug working w/ Locomotive, please speak up! I'm getting desperate here.

Why is locomotive essential? Can't you start your app under webrick
or mongrel for debugging? If you do that, it's straightforward: Just
require 'ruby-debug' and just before where you want to stop, call the
debugger method.