Consider adding the web-console gem for development

The web-console gem has been included in Rails' default generated Gemfile for a while now.

This allows us to add console anywhere in the code like binding.pry and bring up a console on the web page.

This also works by default on Rails exception pages. The console is shown by default and then you can navigate the stacktrace and inspect variables / run commands there.

I think this is very useful considering that it is not easy to get a binding.pry session when running GDK.