Gregg

# You know REST... yeah... This is not RESTful

class UsersController < ApplicationController

  def subscribe_mailing_list
    current_user.subscribe(params[:mailing_list])
    redirect_to users_path, :notice => "You've been subscribed"
  end
  
  def unsubscribe_mailing_list

Gregg

# if you look at your logged in twitter page, there's a crapload of information.  You might expect a controller like:

def index
  @followers_tweets = current_user.followers_tweets.limit(20)
  @recent_tweet = current_user.tweets.first
  @following = current_user.following.limit(5)
  @followers = current_user.followers.limit(5)
  @recent_favorite = current_user.favorite_tweets.first
  @recent_listed = current_user.recently_listed.limit(5)
 

Gregg

# So we have a form that just sends an email to us

# <h1>Contact Us</h1>
# <%= form_for :contact, :url => 'send_email' do |f| %>
#   <div class="field">
#     <%= f.label :name %><br />
#     <%= f.text_field :name %>
#   </div>
#   <div class="field">
#     <%= f.label :email %><br />

Gregg

# Look at the http://twitter.com/settings/account page.  Here you have some user settings, and some account settings that you might (perhaps) want to keep in a separate table.

class User < ActiveRecord::Base
  has_one :account_setting, :dependent => :destroy
end

# Then in the user form

# <%= form_for(@user) do |f| %>
#   <div class="field">

Gregg

# If we found this in a controller

def index
  @tweets = Tweet.find(:all, :conditions => {:user_id => current_user.id}, :order => 'created_at desc', :limit => 10)
  @trending = Topic.find(:all, :conditions => ["started_trending > ?", 1.day.ago], :order => 'mentions desc', :limit => 5)
  ...
end

# The first thing that's wrong with it, is it's not using the nice new syntax Rails 3 gives us.

Gregg

# Even when you create objects they should be properly scoped... Remember this example?

      t = Tweet.new
      t.status = "RT #{@tweet.user.name}: #{@tweet.status}"
      t.original_tweet = @tweet
      t.user = current_user
      t.save

# A simplified version of this, properly scoped might look like this:

Gregg

# A user has many tweets.. and sometimes we want to retweet.

class TweetsController < ApplicationController

  def retweet
    tweet = Tweet.find(params[:id])
    
    if tweet.user == current_user
      flash[:notice] = "Sorry, you can't retweet your own tweets"
    elsif tweet.retweets.where(:user_id => current_user.id).present?

Gregg

Building a Facebook application and hosting it in Heroku

Introduction

With Facebook's Graph API and the creation of the Open Graph protocol, it is now easier then ever before to read and write data from and to the "social graph". Here's a few of the possibilities:

• You could turn your webpage into a fully-featured Facebook-like page, just like if you were inside Facebook.

Gregg

Building a Facebook application with Rails and hosting it in Heroku

Introduction

Facebook has given a big step in simplicity with its Graph API and the creation of the Open Graph protocol, now more than ever it's easier to read and write data from and to the socalled social graph.

You could turn your webpage into a fully-featured Facebook-like page, just like if you were inside Facebook, you can give your users the ability to sign in with their Facebook credentials, customize your users' experience with parameters taken from their Facebook profiles, you could add a Like button to every object in your page as images, songs, articles, etc., tell your users which friends of theirs have liked your content, and a lot of things more, oh, I forgot to mention something, all of this with total ease. Yes, I know you could do it with Facebook Connect, but I said "with ease".

Gregg

# httperf with sessions

$ httperf --wsess=10,5,2 --rate=1 --timeout=5 \
          --server=localhost --port=3000 --uri=/posts

# httperf with a file of uris

$ httperf --wsesslog=10,2,path.txt --rate=1 \
          --timeout=5, --session-cookie
          --server=localhost --port=3000 --uri=/posts