wagenet

# Based on http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/1812-default_scope-cant-take-procs
ActiveRecord::Base.class_eval do

  class << self
    
    private
    
      def find_last(options)
        order = options[:order]

ryanb

class Ability
  include CanCan::Ability
  
  def initialize(user)
    user ||= User.new # guest user
    
    if user.role? :admin
      can :manage, :all
    else
      can :read, :all

chriseppstein

namespace :sass do
  desc 'Updates stylesheets if necessary from their Sass templates.'
  task :update => :environment do
    sh "rm -rf public/stylesheets/compiled tmp/sass-cache"
    Sass::Plugin.options[:never_update] = false
    Sass::Plugin.update_stylesheets
  end
end

mnutt

Instrument Anything in Rails 3

With Rails 3.0 released a few weeks ago I've migrated a few apps and I'm constantly finding useful new improvements. One such improvement is the ability to log anything in the same way that Rails internally logs ActiveRecord and ActionView. By default Rails 3 logs look slightly spiffier than those produced by Rails 2.3: (notice the second line has been cleaned up)

Started GET "/" for 127.0.0.1 at Mon Sep 06 01:07:11 -0400 2010
  Processing by HomeController#index as HTML
  User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE (`users`.`id` = 3) LIMIT 1
  CACHE (0.0ms)  SELECT `users`.* FROM `users` WHERE (`users`.`id` = 3) LIMIT 1

Rendered layouts/_nav.html.erb (363.4ms)

tnine

include Opscode::Aws::Ec2


#Auto locates and attached ebs devices based on the data bag they reside in. The following test cases need to be performed
# Create multiple resources with new node: PASS
#
# Re-attach multiple resources after a reboot: PASS
#
# Create resources across 2 runs.  First run creates first raid set, second run re-attaches then creates: PASS
# 

pbosetti

#!/usr/bin/env ruby
# untitled.rb

# Created by Paolo Bosetti on 2011-04-22.
# Copyright (c) 2011 University of Trento. All rights reserved.

require "rubygems"
require 'ffi'

module Shared

nstielau

Nick-Stielaus-MacBook-Pro:chef-repo nstielau$ knife node log nstielau_vagrantup.com
Time                            Recipe                          Action                          Resource Type                   Resource                      
Tue May 10 10:25:20 -0700 2011  nginx::source                   create                          template                        proxy.conf                    
Tue May 10 10:25:20 -0700 2011  nginx::source                   enable                          service                         nginx                         
Tue May 10 09:50:42 -0700 2011  nginx::source                   create                          template                        /etc/init.d/nginx 

MEHColeman

Matz keynote
What Matz is working on now: ruby is now a JIS standard language, and has just been submitted to ISO. 
The standard is a subset of the language and is 1.8 and 1.9 compatible (so doesn't cover the differences between the two).
Hopefully this will encourage interest from larger enterprises. 
Matz looking to hire full time ruby core developers

Matz's goal is to make ruby developers happy. A few years ago, the Ruby Association was formed to create a dialog with businesses, to make ruby more business friendly. 

Matz points to jruby and rubinius (as well as 1.8 and 1.9) as great examples of ruby implementations  (as well as a bunch of others)
Jruby is fast. And has a great gc. 

grantr

## mysql::master
ruby_block "store_mysql_master_status" do
  block do
    node.set[:mysql][:master] = true
    m = Mysql.new("localhost", "root", node[:mysql][:server_root_password])
    m.query("show master status") do |row|
      row.each_hash do |h|
        node.set[:mysql][:master_file] = h['File']
        node.set[:mysql][:master_position] = h['Position']
      end

hyle

// knockout 2.2.1

ko.utils.arrayFilter                            = function (array, predicate) { /* .. */ }

ko.utils.arrayFirst                             = function (array, predicate, predicateOwner) { /* .. */ }

ko.utils.arrayForEach                           = function (array, action) { /* .. */ }

ko.utils.arrayGetDistinctValues                 = function (array) { /* .. */ }