Connecting Debugger to Rails Applications

• debug

  28 1,077 8.5 Ruby

  Debugging functionality for Ruby (by ruby)

  

Execution is paused at the breakpoint (which has a little arrow pointing at it). You can then enter commands to the rdbg prompt to control the debugger. For a list of the different commands you can use, visit the documentation for the debug gem.

• overmind

  15 2,708 6.4 Go

  Process manager for Procfile-based applications and tmux

Another solution is to use a different tool to drive the Procfile. The one I'm most familiar with is a tool called overmind. If you run your Procfile with overmind, you'll be able to open up a new terminal window and individually connect to any of the processes that are running. So if you want to connect to the web process to debug, you can open up a new window and run overmind connect web, and you'll have a window where you can work with the debugger's prompt.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• tmux

  207 32,923 8.3 C

  tmux source code

  

The downside of overmind is that it requires tmux, which is a terminal multiplexer tool. If you don't already use tmux, I'd say it's probably not worth learning it just for the purposes of using overmind. But if you're like me and already know/use tmux, this can be a great solution to pursue.

• cssbundling-rails

  27 552 6.4 Ruby

  Bundle and process CSS in Rails with Tailwind, PostCSS, and Sass via Node.js.

  

In the Procfile.dev that's currently generated by the cssbundling-rails and jsbundling-rails gems, we can see that they write the web process like:

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