Rails Gems for Developing

bullet.rb

if defined? Bullet
  Bullet.enable = true
  Bullet.alert = true
  Bullet.bullet_logger = true
  Bullet.console = true
  Bullet.rails_logger = true
  Bullet.add_footer = true
end

Gemfile.rb

group :development
  gem 'better_errors' # better errors pages (https://github.com/charliesome/better_errors)
  gem 'binding_of_caller' # console for better errors
  gem 'jazz_hands' # cool rails console `rails c` (https://github.com/nixme/jazz_hands)
  
  gem 'quiet_assets' # speed up assets & clear log (https://github.com/evrone/quiet_assets)
  gem 'bullet' # optimize queries (https://github.com/flyerhzm/bullet)
end

Nice info !