nthj

How to setup Heroku Hostname SSL with GoDaddy SSL Certificate and Zerigo DNS
Heroku recently added an exciting new 'Hostname SSL' option.  This option offers the broad compatibility of IP-based SSL, but at 1/5 the price ($20 / month at the time of this writing).  
 
The following tutorial explains how to use Heroku's new 'Hostname SSL' option on your Heroku project.  Before we begin, let's list what we're using here:

    * Heroku Hostname SSL
    * GoDaddy Standard SSL Certificate
    * Zerigo DNS

Note: I am not using the Heroku Zerigo DNS add-on, instead I have a separate Zerigo account for my DNS needs.  I do this because Zerigo offers 30 hosts on free direct accounts, versus only 10 hosts on the free Heroku add-on.

nthj

def rpn expression
  stack = []

  expression.split(' ').each do |token|
    stack << if token =~ /\d/
      token
    else
      [stack.pop, stack.pop].map { |t| t.to_i }.inject do |sum, x|
        eval "#{x} #{token} #{sum}"
      end

nthj

# Throw this into config/initializers/cache.rb
if ARGV.any? { |a| %w(s server thin).include?(a) }
  puts "=> Initializing environment, clearing cache"
  Rails.cache.clear
end

nthj

namespace :paperclip do
  # Fix broken timestamps
  task :fix => :environment do
    # All user picture files in the production environment (directories[1])
    files = User.last.picture.send(:connection).directories[Rails.env.staging? ? 2 : 1].files.select do |file| 
      file.key.starts_with?('users/pictures')
    end.sort_by(&:last_modified)

    (0..300).each do |ranged|
      puts "Ranged: #{ranged}"

nthj

gem 'heroku'

nthj

#!/usr/bin/env ruby
# script/rails
# This command will automatically be run when you run "rails" with Rails 3 gems installed from the root of your application.

# Automatically kill zombie Thin servers when booting up a rails server
if ENV['RACK_ENV'] == 'development' && pid = `ps -ef | grep thin | grep -v grep | sort -r | sed -n 2p | awk '{print $2}'`
  puts "=> Killing existing server with pid #{pid}"
  `kill -9 #{pid}`
end

nthj

class Estimated < Other; end
class Forwarded < Other; end

case discussable
when Estimated then :queued  # discussable.estimate?
when Forwarded then :read    # discussable.forward?
else :unread
end

nthj

# n = number of additional customers per period
# p = amount each customer is charged per period
# a = duration of period to calculate total gross for
# 
# example: customer every 2 weeks, 25 per month, after 6 months: (fn).call(2, 25, 6)
# => 1050
->(n, p, a) { t = 0; a.times { |i| t += (i + 1) * p * n }; t }

nthj

# if "key" equals "bird.jpg", 
# then this code creates a smaller thumbnail of the bird, 
# sized to 270 by 167 pixels, 
# adding a watermark, 
# compressing the thumbnail to save space, 
# and saving the new thumbnail as "bird_medium.jpg"
Original.find(key).compress(70).resize(270, 167).to(:fit).watermark.save(:medium)

nthj

module Railings
  module Filterable
    [:after, :before].each do |context|
      [:index, :show, :new, :create, :update, :destroy].each do |action|
        define_method "#{context}_#{action}", ->(filter, options = { }, &block) do
          send "#{context}_filter", filter, options.merge!(:only => action), &block
        end
      end
    end
  end