Rinaldi Fonseca rinaldifonseca

A Capistrano Rails Guide

by Jonathan Rochkind, http://bibwild.wordpress.com

why cap?

Capistrano automates pushing out a new version of your application to a deployment location.

I've been writing and deploying Rails apps for a while, but I avoided using Capistrano until recently. I've got a pretty simple one-host deployment, and even though everyone said Capistrano was great, every time I tried to get started I just got snowed under not being able to figure out exactly what I wanted to do, and figured I wasn't having that much trouble doing it "manually".

Why I love zsh (and hate being forced to use bash)

Smarter completion:
cd tab completion -- directories only
bash can do this, but needs the bash-completion package, usually comes separately
zsh always comes with completions, why doesn't bash?
Filename correction during completion
if dir1/x exists and dir2 exists, then "dir/x<TAB>" completes to dir1/x
if name1 is a file and name2 is a directory with files in it, "name/<TAB>" completes to "name2/"

Patched ruby 1.9.3-p0 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p0 with patches to make ruby-debug work again (#47) and boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84).

Huge thanks to funny-falcon for the performance patches.

	# see http://stackoverflow.com/questions/5880962/how-to-destroy-jobs-enqueued-by-resque-workers - old version
	# see https://github.com/defunkt/resque/issues/49
	# see http://redis.io/commands - new commands

	namespace :resque do
	desc "Clear pending tasks"
	task :clear => :environment do
	queues = Resque.queues
	queues.each do \|queue_name\|
	puts "Clearing #{queue_name}..."

	# Run this file with `RAILS_ENV=production rackup -p 3000 -s thin`
	# Be sure to have rails and thin installed.
	require "rubygems"

	# We are not loading Active Record, nor the Assets Pipeline, etc.
	# This could also be in your Gemfile.
	gem "actionpack", "~> 3.2"
	gem "railties", "~> 3.2"

	require "rails"

	require 'spec_helper'

	describe Users::OauthCallbacksController, "handle facebook authentication callback" do

	describe "#annonymous user" do
	context "when facebook email doesn't exist in the system" do
	before(:each) do
	stub_env_for_omniauth

	get :facebook

	form_authenticity_token.to_s

	headers: {
	'X-Transaction': 'POST Example',
	'X-CSRF-Token': $('meta[name="csrf-token"]').attr('content')
	},

	# Simple, scrappy UDP DNS server in Ruby (with protocol annotations)
	# By Peter Cooper
	#
	# MIT license
	#
	# * Not advised to use in your production environment! ;-)
	# * Requires Ruby 1.9
	# * Supports A and CNAME records
	# * See http://www.ietf.org/rfc/rfc1035.txt for protocol guidance
	# * All records get the same TTL

	require 'net/http'
	require 'uri'

	postData = Net::HTTP.post_form(URI.parse('http://rinaldifonseca.com'), {'param'=>'postValue'})

	class AddPriceToLineItems < ActiveRecord::Migration
	def change
	add_column :line_items, :price, :decimal, :precision => 8, :scale => 3
	end
	end