jamiew

Deploying a Rails App with EC2 + S3 + Ubuntu
============================================

Create EC2 Instance
-------------------

    create new instance ami-bf5eb9d6 [http://alestic.com/](http://alestic.com/)
    create new elastic ip
    attach elastic ip to instance
    point dns to elastic ip

jamiew

// instantly implement a konami code easter-egg!!!!
// from http://static.jquery.com/files/rocker/scripts/custom.js
// where it's labeled "hehe" and would open up a javascript guitar hero (!)
if ( window.addEventListener ) {
        var kkeys = [], konami = "38,38,40,40,37,39,37,39,66,65";
        window.addEventListener("keydown", function(e){
                kkeys.push( e.keyCode );
                if ( kkeys.toString().indexOf( konami ) >= 0 ) {
                        // get your konami on
                        // window.location = "http://ejohn.org/apps/hero/";

jamiew

ffmpeg -hq -ss 00:00:00 -t 00:45:00 -i <movie.avi> -target svcd ./m1.mpg
ffmpeg -hq -ss 00:45:00 -t 00:45:00 -i <movie.avi> -target svcd ./m2.mpg
ffmpeg -hq -ss 01:30:00 -t 00:25:29 -i <movie.avi> -target svcd ./m3.mpg

jamiew

CREATE TABLE `audits` (
  `id` int(11) NOT NULL auto_increment,
  `auditable_id` int(11) default NULL,
  `auditable_type` varchar(255) default NULL,
  `auditable_user_id` int(11) default NULL,
  `user_id` int(11) default NULL,
  `user_type` varchar(255) default NULL,
  `username` varchar(255) default NULL,
  `action` varchar(255) default NULL,
  `changes` text,

jamiew

#!/usr/bin/env ruby
# put in /etc/munin/plugins and restart munin-node
# by Dan Manges, http://www.dcmanges.com/blog/rails-application-visualization-with-munin
# NOTE: you might need to add munin to allow passwordless sudo for passenger-memory-stats 
 
def output_config
  puts <<-END
graph_category App
graph_title Passenger memory stats 
graph_vlabel count

jamiew

#!/usr/bin/env ruby
# put in /etc/munin/plugins and restart munin-node
# by Dan Manges, http://www.dcmanges.com/blog/rails-application-visualization-with-munin
# NOTE: you might need to add munin to allow passwordless sudo for passenger-memory-stats 

def output_config
  puts <<-END
graph_category App
graph_title passenger status
graph_vlabel count

jamiew

def sync_changesets
  return unless ENABLE_SUBVERSION

  begin
    latest_changeset = changesets.find(:first, :select => 'revision', :order => 'revised_at DESC')
    start = latest_changeset ? latest_changeset.revision.to_i + 1: 1
    stop  = latest_revision
    return if start > stop

    Changeset.transaction do

jamiew

def delete_dups_for(model, collect_by)
  keep_array = Hash.new { |h,k| h[k] = [] }
  delete_array = []
  model_name = model.name
  all_objects = model.all.reverse #so we add newest first, sort of
  pbar = ProgressBar.new(model_name.pluralize, all_objects.count)
  all_objects.each do |obj|
    if detect_dup((keep_array[obj.send(collect_by)]), obj).nil?
      keep_array[obj.send(collect_by)] << obj
    else

jamiew

## from railscasts: http://railscasts.com/episodes/124-subdomains

# models/invitation.rb
belongs_to :sender, :class_name => 'User'
has_one :recipient, :class_name => 'User'

validates_presence_of :recipient_email
validate :recipient_is_not_registered
validate :sender_has_invitations, :if => :sender

jamiew

# never render the full layout if it's an XmlHttpRequest
class ApplicationController < ActionController::Base
  def render(*args)
    args.first[:layout] = false if request.xhr? and args.first[:layout].nil?
    super
  end  
end