How to add debugger (binding.pry) in dependecy gem?

Question

I would like to add binding.pry to check some things on fly in kaminari gem which is dependency of activeadmin gem. I use also kaminari as completely separate gem.

activeadmin (1.0.0.pre5)
      arbre (~> 1.0, >= 1.0.2)
      bourbon
      coffee-rails
      formtastic (~> 3.1)
      formtastic_i18n
      inherited_resources (~> 1.6)
      jquery-rails
      jquery-ui-rails
      kaminari (~> 0.16.1)
      railties (>= 3.2, < 5.1)
      ransack (~> 1.3)
      sass-rails
      sprockets (< 4.1)

I've already tried something like below in Gemfile:

gem 'kaminari', git: 'https://github.com/hubertjakubiak/kaminari.git', branch: 'v0.16.3'

Answer 1

No need for forking here. You can edit locally installed gems. Just do this:

bundle open kaminari

It will open the corresponding version of kaminari in your $EDITOR. There you can insert debug printing, binding.pry or whatever you like. Don't forget to restart the app/server.

And don't forget to clean up when you're done. Either by manually undoing your changes or running

bundle pristine kaminari