Is it possible to debug a Rails application in a similar way to a Java application - setting breakpoints and stepping into the code?

What are the best tools for this?

I have a hybrid Java/Ruby on Rails application which I can run in Eclipse or Netbeans.

I would like to step into some code in this app and try to figure out the cause of a problem I'm having.

In Eclipse if I set a breakpoint in my blog_controller and then choose the 'Debug' button, it seems to use the ruby-debug-ide gem to execute the code but I get this unhelpful output and no option to step into any source:

Fast Debugger (ruby-debug-ide 0.4.5) listens on localhost:56726
    ./war/WEB-INF/app/controllers/blog_controller.rb:1
    C:/Ruby18/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.5/lib/ruby-debug.rb:101:in `debug_load'
    C:/Ruby18/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.5/lib/ruby-debug.rb:101:in `debug_program'
    C:/Ruby18/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.5/bin/rdebug-ide:82
    C:/Ruby18/bin/rdebug-ide:19:in `load'
    C:/Ruby18/bin/rdebug-ide:19
Uncaught exception: uninitialized constant ApplicationController

I'm not sure if I'm doing something wrong or if this is all I can expect.

java ruby-on-rails ruby eclipse netbeans
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