From: suntou <jshen2000@...>
Date: 2006-10-05T10:05:05+09:00
Subject: How do I get ruby-zlib-0.6.0 working on OS X

I need to use the zlib module, but when I put this code in:

require 'zlib'

class SController < ApplicationController
  def zip
    s = "Hello"
    defl = Deflate.new
    deflated = defl.deflate(s)
    render :inline => %{ #{deflated} }
  end
end

I got following message:

 NameError in SController#zip

uninitialized constant Deflate

RAILS_ROOT: /Users/jianshen/jedmin/suntou/public/../config/..
Application Trace | Framework Trace | Full Trace

/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:133:in
`const_missing'
#{RAILS_ROOT}/app/controllers/s_controller.rb:15:in `zip'

/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:133:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`perform_action_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'
/usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
`perform_action'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`process_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:in
`process_without_session_management_support'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
`process'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:in
`dispatch'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:150:in
`process_request'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:54:in
`process!'
/usr/local/lib/ruby/site_ruby/1.8/fcgi.rb:600:in `each_cgi'
/usr/local/lib/ruby/site_ruby/1.8/fcgi.rb:597:in `each_cgi'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:53:in
`process!'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:23:in
`process!'
/Users/jianshen/jedmin/suntou/public/dispatch.fcgi:24

/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
`const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:133:in
`const_missing'
#{RAILS_ROOT}/app/controllers/s_controller.rb:15:in `zip'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`perform_action_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'
/usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
`perform_action'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`process_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:in
`process_without_session_management_support'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
`process'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:in
`dispatch'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:150:in
`process_request'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:54:in
`process!'
/usr/local/lib/ruby/site_ruby/1.8/fcgi.rb:600:in `each_cgi'
/usr/local/lib/ruby/site_ruby/1.8/fcgi.rb:597:in `each_cgi'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:53:in
`process!'
/usr/local/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:23:in
`process!'
/Users/jianshen/jedmin/suntou/public/dispatch.fcgi:24

This error occured while loading the following files:
   deflate.rb

I guess this is because zlib is not correctly installed.  Here is my
questions:

1. Should zlib be part of the standard ruby install that comes with
ruby on rail?
2. Is ruby-zlib-0.6.0 the latest stable version?
3. How can I add zlib to my ror installation on OS X?  I am currently
running rails 1.1.2.

I am still new to rails and ruby.  Your help is greatly appreciated.

Suntou