gistfile1.rb

#!/usr/bin/env ruby
# Usage:
#   $ ./script/railssh

APP_PATH = File.expand_path('../../config/application',  __FILE__)
require File.expand_path('../../config/boot',  __FILE__)
require APP_PATH
Rails.application.require_environment!

module Kernel
  alias_method :_exit, :exit
  def exit; end
  alias_method :_require, :require
  def require(name)
    if name =~ /^rails\/commands\//
      load "#{name}.rb"
    else
      _require(name)
    end
  end
end

def routes(controller = nil)
  Rails.application.reload_routes!
  all_routes = Rails.application.routes.routes

  if controller.present?
    all_routes = all_routes.select{ |route| route.defaults[:controller] == controller }
  end

  routes = all_routes.collect do |route|

    reqs = route.requirements.dup
    reqs[:to] = route.app unless route.app.class.name.to_s =~ /^ActionDispatch::Routing/
    reqs = reqs.empty? ? "" : reqs.inspect

    {:name => route.name.to_s, :verb => route.verb.to_s, :path => route.path, :reqs => reqs}
  end

  routes.reject! { |r| r[:path] =~ %r{/rails/info/properties} } # Skip the route if it's internal info route

  name_width = routes.map{ |r| r[:name].length }.max
  verb_width = routes.map{ |r| r[:verb].length }.max
  path_width = routes.map{ |r| r[:path].length }.max

  routes.each do |r|
    puts "#{r[:name].rjust(name_width)} #{r[:verb].ljust(verb_width)} #{r[:path].ljust(path_width)} #{r[:reqs]}"
  end
end

require 'readline'

Readline.basic_word_break_characters = ""
Readline.completion_proc = lambda do |word|
  ['exit', 'routes'].grep(/^#{Regexp.quote(word)}/)
end

while buf = Readline.readline("\e[42mrails>\e[0m ", true)
  buf = buf.strip
  case buf
  when 'exit'
    _exit
  when /^routes\s*(.*)/
    routes $1
  else
    ARGV.clear
    ARGV.concat buf.split(/\s+/)
    load 'rails/commands.rb'
  end
end