RubyMine Debugging Rails App on Mac OS localhost

Hi,

i am trying to debug rails app - unicorn server.

I've tried following:

1) I tried to start the server on localhost (externally, not with RubyMine) and set some break points. I can see my server when trying to "attach to process". It can attach to process but when i call some REST WebService it won't stop on this method in controller.

2) I tried to run the server from Debugger in RubyMine, the server starts, but when i call some REST WebService it won't stop on this method in controller.

How to debug the Rails App on Mac OS (localhost, unicorn)?

The Rails App ist only API. I want to debug my api calls.

best regards Ivan