My configuration for IRB: highlight Rails.env

Never forget the environment you are in.

# .irbrc
module ColorString
  refine String do
    def cyan = "\e[36m#{self}\e[0m"
    def bg_red = "\e[41m#{self}\e[0m"
    def bg_yellow = "\e[43m#{self}\e[0m"
    def bg_green = "\e[42m#{self}\e[0m"
  end
end

if defined?(Rails)
  using ColorString

  if Rails.env.production? || Rails.env.staging?
    IRB.conf[:SAVE_HISTORY] = false
  end

  project_name = File.basename(Dir.pwd).cyan
  environment = case Rails.env
                when "development"
                  Rails.env.bg_green
                when "staging"
                  Rails.env.bg_yellow
                when "production"
                  Rails.env.bg_red
                end
  prompt = "#{project_name} [#{environment}]"

  IRB.conf[:PROMPT] ||= {}
  IRB.conf[:PROMPT][:RAILS] = {
    PROMPT_I: "#{prompt} %03n > ",
    PROMPT_S: "#{prompt} %03n * ",
    PROMPT_C: "#{prompt} %03n ? ",
    RETURN: "=> %s\n"
  }

  IRB.conf[:PROMPT_MODE] = :RAILS
end

begin
  require "awesome_print"
  AwesomePrint.irb!
  rescue
end