Getting started with byebug in Rails

Question

I am making my way from Django to Rails. So far I just created a new Rails app and found in the Gemfile this line:

  # Call 'debugger' anywhere in the code to stop execution and get a
  # debugger console
  gem 'byebug'

How this supposed to work? Is it as straightforward as it said in the comment? I can put debugger somewhere in code and get a debugger console in my browser?

Answer 1

start rails server

rails s

and monitor the logs.

Now try accessing the page which points to the place where debugger is written in the code The log will stop at a point where you have put the debugger/byebug word.

You can print out variables at that instant

update for rails 4

On suggestion of Deivid, I would like to quote him here

drop the --debug flag. You don't need to do anything special to make byebug work in Rails 4. Just require 'byebug' and call byebug