CCSP 2012 Checkin

Gemfile

# Gemfile
source 'https://rubygems.org'

gem 'rails', '3.2.3'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'rest-graph'
gem 'rest-client'
gem 'json'

group :development do
  gem 'sqlite3'
end

group :production do
  gem 'pg'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  gem 'therubyracer', :platform => :ruby

  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# To use Jbuilder templates for JSON
# gem 'jbuilder'

# Use unicorn as the app server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

home.rb

# app/controller/home.rb
class HomeController < ApplicationController
  include RestGraph::RailsUtil
  before_filter :login_facebook, :only => [:login]
  before_filter :load_facebook, :except => [:login]

  def index
    @access_token = rest_graph.access_token

    if @access_token
      @me = rest_graph.get('/me')
    end
  end

  def login
    redirect_to home_path
  end

  def logout
    reset_session
    redirect_to home_path
  end

  def checkin
    unless rest_graph.access_token.nil?
      # logged in
      place_id = "152222568167545"
      location = { :latitude => "25.019588", :longitude => "121.541722" }
      tag = "1125666248"
      message = "La la la!"
      rest_graph.post('/me/checkins', :place => place_id,
                                      :coordinates => location,
                                      :tags => tag,
                                      :message => message)
    end

    redirect_to home_path, :notice => 'Checked in CCSP!'
  end

private
  def load_facebook
    rest_graph_setup(:write_session => true)
  end

  def login_facebook
    rest_graph_setup(:auto_authorize         => true,
                     :auto_authorize_scope   => 'publish_checkins',
                     :ensure_authorized      => true,
                     :write_session          => true)
  end
end

index.html.erb

<!-- app/views/home/index.html.erb -->
<h1><%= notice %></h1>
<h1> Hello to everyone! </h1>
<p>Access token: <%= @access_token %></p>

<% if @access_token %>
  <p>Logged in!</p>
  <h2>Hi, <%= @me['name'] %></h2>
  <img src="https://graph.facebook.com/me/picture?access_token=<%= @access_token %>" />
  <p><%= @me %></p>
  <p><%= link_to 'Check in!', checkin_path %></p>
  <p><%= link_to 'Log out', logout_path %></p>
<% else %>
  <p><%= link_to 'Log in', login_path %></p>
<% end %>

rest-graph.yaml

# config/rest-graph.yaml
development:
    app_id: '...'
    secret: '...'
    callback_host: 'localhost:3000'

route.rb

Checkin::Application.routes.draw do
  get '/' => 'home#index', :as => :home
  get '/login' => 'home#login'
  get '/logout' => 'home#logout'
  get '/checkin' => 'home#checkin'
end