Using Pry with Rails 4 (with console helpers)

In your "config/application.rb" file:

module MyRailsApp
  class Application < Rails::Application
    #.. default configuration stuff here
    console do
      require "pry"
      config.console = Pry
      unless defined? Pry::ExtendCommandBundle
        Pry::ExtendCommandBundle = Module.new
      end
      require "rails/console/app"
      require "rails/console/helpers"
      TOPLEVEL_BINDING.eval('self').extend ::Rails::ConsoleMethods
    end
  end
end

You'll need to declare pry as a dependency in your Gemfile, of course.