If you’re using Edge Rails and mongrel you might have seen this error:

   1  warning: already initialized constant OPTIONS

There’s a bug report here that explains this problem in detail.

The solution for me was to rerun the freeze command:

   1  rake rails:freeze:edge

You might also get “warning: already initialized constant OPTIONS ” error if you haven’t installed a gem your software relies on. In the following example openssl should be installed:

   1  /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’: no such file to load—openssl (MissingSourceFile)

ActiveResource might also be the problem:

   1  gem install activeresource --source http://gems.rubyonrails.org

   1  # http://mongrel.rubyforge.org/rdoc/index.html
   2  # gem install -y mongrel
   3  require 'rubygems'
   4  require 'mongrel'
   5  
   6  # Usage: ruby mongrel_http_server.rb <host> <port> <docroot>
   7  host    = ARGV[0] || "127.0.0.1"
   8  port    = ARGV[1] || 80
   9  docroot = ARGV[2] || "html/"
  10  
  11  # Simple Mongrel handler that prints the current date and time
  12  class HandlerExample < Mongrel::HttpHandler
  13     def process(request, response)
  14        response.start(200) do |head, out|
  15           head["Content-Type"] = "text/html"
  16           out.write Time.now
  17        end
  18     end
  19  end
  20  
  21  # Configure Mongrel and handlers
  22  config = Mongrel::Configurator.new :host => host, :port => port do
  23    listener do
  24      uri "/",              :handler => Mongrel::DirHandler.new(docroot)
  25      uri "/handler_example", :handler => HandlerExample.new, :in_front => true
  26    end
  27  
  28    # CTRL+C to stop server
  29    trap("INT") { stop }
  30    run
  31  end
  32  
  33  # Start Mongrel
  34  puts "Mongrel listening on '#{host}:#{port}', serving documents from '#{docroot}'."
  35  config.join
  36  

   1  # Create a Rails project
   2  rails project -d sqlite3
   3  cd project
   4  # Delete index file
   5  rm public/index.html
   6  # Use Rails edge. Use  rake rails:freeze:edge TAG=rel_1-2-3 to get a specific version.
   7  rake rails:freeze:edge
   8  # Add Capistrano configuration file
   9  capify .
  10  # Add Mongrel cluster configuration file
  11  sudo mongrel_rails cluster::configure -e production \
  12      --user mongrel --group mongrel \
  13      -c /var/www/project-xxx/current \
  14      -a 127.0.0.1 \
  15      -p 8000  \
  16      -N 3
  17  # Create a Mercurial repository
  18  hg init
  19  # Add project to repository
  20  hg commit -A --message "Project started"
  21  # Push changes to a remote repository
  22  hg push ssh://user@ip:port//var/mercurial/xxx

Cloning is done with hg clone:

   1  hg clone ssh://user@ip:port//var/mercurial/xxx