Starts a debugging session if the debugger gem has been loaded (call
rails server –debugger to do load
it).
# File activesupport/lib/active_support/core_ext/kernel/debugger.rb, line 4
def debugger
message = "\n***** Debugger requested, but was not available (ensure the debugger gem is listed in Gemfile/installed as gem): Start server with --debugger to enable *****\n"
defined?(Rails) ? Rails.logger.info(message) : $stderr.puts(message)
end