mbleigh

source "https://rubygems.org"

gem 'sprockets'
gem 'sprockets-sass'
gem 'sass'
gem 'compass'
gem 'bootstrap-sass'
gem 'handlebars_assets'
gem 'coffee-script'

mislav

joshuaclayton

require "money"

class Decorator < BasicObject
  undef_method :==

  def initialize(component)
    @component = component
  end

  def method_missing(name, *args, &block)

josevalim

Rails 3.2 ships with a simple FileWatcher that only reloads your app if any of the files changed.

Besides, it also provides a mechanism to hook up your own file watcher mechanism, so we can use tools like FSSM that hooks into Mac OS X fsevents. This is an example on how to hook your own mechanism (you need Rails master, soon to be Rails 3.2):

1. Copy the 2_file_watcher.rb file below to lib/file_watcher.rb

2. Add the following inside your Application in config/application.rb

if Rails.env.development?

jferris

#!/usr/bin/env ruby

require 'rubygems'
require 'active_support/core_ext'

chars = (('a'..'z').to_a + ('A'..'Z').to_a)

time = Time.now.beginning_of_month
twelve_hours_from_now = 12.hours.from_now
end_of_next_month = 1.month.from_now.end_of_month

tomkersten

upstream your-app {
  # fail_timeout=0 means we always retry an upstream even if it failed
  # to return a good HTTP response (in case the Unicorn master nukes a
  # single worker for timing out).
  server unix:/tmp/your_app.socket fail_timeout=0;
}

server {
  listen       80;

runemadsen

Polymorphic Associations reversed

It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media

This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.

lukeredpath

class WidgetsController

  def index
    IndexedResourceCommand.new(Widget).execute(params, default_responder)
  end

  def create
    CreateResourceCommand.new(Widget).execute(params, default_responder)
  end

jcasimir

Exposing an API

APIs are becoming an essential feature of modern web applications. Rails does a good job of helping your application provide an API using the same MVC structure you're accustomed to.

In the Controller

Let's work with the following example controller:

class ArticlesController < ApplicationController

jcasimir

Sessions and Conversations

HTTP is a stateless protocol. Sessions allow us to chain multiple requests together into a conversation between client and server.

Sessions should be an option of last resort. If there's no where else that the data can possibly go to achieve the desired functionality, only then should it be stored in the session. Sessions can be vulnerable to security threats from third parties, malicious users, and can cause scaling problems.

That doesn't mean we can't use sessions, but we should only use them where necessary.

Adding, Accessing, and Removing Data