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Install Rails 3.1

gem install rails

generate new app, skipping Test::Unit file generation

rails new my_app -T

Set up Gemfile

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[8] pry(main)> class A;;end
=> nil
[9] pry(main)> a1 = A.new
=> #<A:0xab50838>
[10] pry(main)> a2 = A.new
=> #<A:0xa8871b0>
[11] pry(main)> ObjectSpace.each_object(A){|object| p object}
#<A:0xa8871b0>
#<A:0xab50838>

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#Behold, the nav_link:

The nav_link helper works just like the standard Rails link_to helper, but adds a 'selected' class to your link (or its wrapper) if certain criteria are met. By default, if the link's destination url is the same url as the url of the current page, a default class of 'selected' is added to the link.

For full usage details, see: http://viget.com/extend/rails-selected-nav-link-helper

Drop nav_link_helper.rb into app/helpers in your Rails 3.x app and enjoy.

yakjuly

# For RVM
yum install -y bash curl git libxslt # NOTE: For git you need the EPEL repository enabled
apt-get install bash curl git-core

# OS => Redhat/CentOS/Fedora
yum install -y gcc-c++ patch readline readline-devel zlib zlib-devel libyaml-devel libffi-devel openssl-devel
yum install -y make bzip2
yum install -y iconv-devel # NOTE: For centos 5.4 final iconv-devel might not be available :(

# OS => Debian/Ubuntu

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cassettes

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module ActionController
  module ImplicitRender

    def default_render
      # lookup template exist? go to render it
      render and return if template_exists?(action_name.to_s, _prefix)

      has_template = begin
        old_formats, @lookup_context.formats = @lookup_context.formats, Mime::SET.symbols
        template_exists?(action_name.to_s, _prefix)

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#!/usr/bin/env ruby

#curl https://raw.github.com/gist/1206310 --output create_mysql_db.rb  && chmod +x create_mysql_db.rb

require 'rubygems'
require 'optparse'
require 'mysql'

options = {}
OptionParser.new do |opts|

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production:
  listen: 0.0.0.0:9312
  address: 0.0.0.0 # 对应的安装了searchd(sphinx)的mysql服务器ip
  port: 9312 # 对应的安装了searchd(sphinx)的mysql服务器端口
  bin_path: '/usr/local/bin'
  searchd_file_path: '/data/sphinx/production'
  query_log_file: '/data/sphinx/log/searchd.query.log'
  searchd_log_file: '/data/sphinx/log/searchd.log'
  exceptions: '/data/sphinx/log//exception.log'
  enable_star: true # 支持通配符匹配