Re-do Getting Started application with Rails 4.

The sample application with the Getting Started Guide was very out of
date. I've re-done it on edge (as of 51b9def) so it should
be good to go with Rails 4. It's also in synch with what the guide
actually says.

guides/code/getting_started/.gitignore

@@ -0,0 +1,16 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-journal
+
+# Ignore all logfiles and tempfiles.
+/log/*.log
+/tmp

guides/code/getting_started/Gemfile

@@ -1,38 +1,38 @@
 source 'https://rubygems.org'
 
-gem 'rails', '3.2.3'
-
-# Bundle edge Rails instead:
-# gem 'rails', :git => 'git://github.com/rails/rails.git'
+gem 'rails', '4.0.0'
 
 gem 'sqlite3'
 
-
 # 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'
+  gem 'sprockets-rails'
+  gem 'sass-rails'
+  gem 'coffee-rails'
 
   # See https://github.com/sstephenson/execjs#readme for more supported runtimes
-  # gem 'therubyracer', :platform => :ruby
+  # gem 'therubyracer', platforms: :ruby
 
   gem 'uglifier', '>= 1.0.3'
 end
 
 gem 'jquery-rails'
 
+# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
+gem 'turbolinks'
+
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+gem 'jbuilder', '~> 1.0.1'
+
 # 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'
+# gem 'capistrano', group: :development
 
 # To use debugger
 # gem 'debugger'

guides/code/getting_started/Gemfile.lock

@@ -0,0 +1,150 @@
+GIT
+  remote: git://github.com/rails/activerecord-deprecated_finders.git
+  revision: 2e7b35d7948cefb2bba96438873d7f7bb1961a03
+  specs:
+    activerecord-deprecated_finders (0.0.2)
+
+GIT
+  remote: git://github.com/rails/arel.git
+  revision: 38d0a222e275d917a2c1d093b24457bafb600a00
+  specs:
+    arel (3.0.2.20120819075748)
+
+GIT
+  remote: git://github.com/rails/coffee-rails.git
+  revision: 052634e6d02d4800d7b021201cc8d5829775b3cd
+  specs:
+    coffee-rails (4.0.0.beta)
+      coffee-script (>= 2.2.0)
+      railties (>= 4.0.0.beta, < 5.0)
+
+GIT
+  remote: git://github.com/rails/sass-rails.git
+  revision: ae8138a89cac397c0df903dd533e2862902ce8f5
+  specs:
+    sass-rails (4.0.0.beta)
+      railties (>= 4.0.0.beta, < 5.0)
+      sass (>= 3.1.10)
+      sprockets-rails (~> 2.0.0.rc0)
+      tilt (~> 1.3)
+
+GIT
+  remote: git://github.com/rails/sprockets-rails.git
+  revision: 09917104fdb42245fe369612a7b0e3d77e1ba763
+  specs:
+    sprockets-rails (2.0.0.rc1)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      sprockets (~> 2.8)
+
+PATH
+  remote: /Users/steve/src/rails
+  specs:
+    actionmailer (4.0.0.beta)
+      actionpack (= 4.0.0.beta)
+      mail (~> 2.5.3)
+    actionpack (4.0.0.beta)
+      activesupport (= 4.0.0.beta)
+      builder (~> 3.1.0)
+      erubis (~> 2.7.0)
+      rack (~> 1.4.3)
+      rack-test (~> 0.6.1)
+    activemodel (4.0.0.beta)
+      activesupport (= 4.0.0.beta)
+      builder (~> 3.1.0)
+    activerecord (4.0.0.beta)
+      activemodel (= 4.0.0.beta)
+      activerecord-deprecated_finders (= 0.0.2)
+      activesupport (= 4.0.0.beta)
+      arel (~> 3.0.2)
+    activesupport (4.0.0.beta)
+      i18n (~> 0.6)
+      minitest (~> 4.1)
+      multi_json (~> 1.3)
+      thread_safe (~> 0.1)
+      tzinfo (~> 0.3.33)
+    rails (4.0.0.beta)
+      actionmailer (= 4.0.0.beta)
+      actionpack (= 4.0.0.beta)
+      activerecord (= 4.0.0.beta)
+      activesupport (= 4.0.0.beta)
+      bundler (>= 1.2.2, < 2.0)
+      railties (= 4.0.0.beta)
+      sprockets-rails (~> 2.0.0.rc1)
+    railties (4.0.0.beta)
+      actionpack (= 4.0.0.beta)
+      activesupport (= 4.0.0.beta)
+      rake (>= 0.8.7)
+      rdoc (~> 3.4)
+      thor (>= 0.15.4, < 2.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    atomic (1.0.1)
+    builder (3.1.4)
+    coffee-script (2.2.0)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.4.0)
+    erubis (2.7.0)
+    execjs (1.4.0)
+      multi_json (~> 1.0)
+    hike (1.2.1)
+    i18n (0.6.1)
+    jbuilder (1.0.2)
+      activesupport (>= 3.0.0)
+    jquery-rails (2.2.0)
+      railties (>= 3.0, < 5.0)
+      thor (>= 0.14, < 2.0)
+    json (1.7.6)
+    mail (2.5.3)
+      i18n (>= 0.4.0)
+      mime-types (~> 1.16)
+      treetop (~> 1.4.8)
+    mime-types (1.19)
+    minitest (4.4.0)
+    multi_json (1.5.0)
+    polyglot (0.3.3)
+    rack (1.4.4)
+    rack-test (0.6.2)
+      rack (>= 1.0)
+    rake (10.0.3)
+    rdoc (3.12)
+      json (~> 1.4)
+    sass (3.2.5)
+    sprockets (2.8.2)
+      hike (~> 1.2)
+      multi_json (~> 1.0)
+      rack (~> 1.0)
+      tilt (~> 1.1, != 1.3.0)
+    sqlite3 (1.3.7)
+    thor (0.16.0)
+    thread_safe (0.1.0)
+      atomic
+    tilt (1.3.3)
+    treetop (1.4.12)
+      polyglot
+      polyglot (>= 0.3.1)
+    turbolinks (1.0.0)
+      coffee-rails
+    tzinfo (0.3.35)
+    uglifier (1.3.0)
+      execjs (>= 0.3.0)
+      multi_json (~> 1.0, >= 1.0.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activerecord-deprecated_finders!
+  arel!
+  coffee-rails!
+  jbuilder (~> 1.0.1)
+  jquery-rails
+  rails!
+  sass-rails!
+  sprockets-rails!
+  sqlite3
+  turbolinks
+  uglifier (>= 1.0.3)

guides/code/getting_started/README.rdoc

@@ -23,6 +23,6 @@ Things you may want to cover:
 
 * ...
 
-If you plan to generate application documentation with `rake doc:app` this file
-is expected to be `README.rdoc`, otherwise please feel free to rename it and use
-a different markup language.
+
+Please feel free to use a different markup language if you do not plan to run
+<tt>rake doc:app</tt>.

guides/code/getting_started/Rakefile

@@ -1,4 +1,3 @@
-#!/usr/bin/env rake
 # Add your own tasks in files placed in lib/tasks ending in .rake,
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 

guides/code/getting_started/app/assets/javascripts/application.js

@@ -12,4 +12,5 @@
 //
 //= require jquery
 //= require jquery_ujs
+//= require turbolinks
 //= require_tree .

guides/code/getting_started/app/assets/javascripts/comments.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

guides/code/getting_started/app/assets/javascripts/posts.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

guides/code/getting_started/app/assets/javascripts/welcome.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

guides/code/getting_started/app/assets/stylesheets/application.css

@@ -10,4 +10,4 @@
  *
  *= require_self
  *= require_tree .
-*/
+ */

guides/code/getting_started/app/assets/stylesheets/comments.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the Comments controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

guides/code/getting_started/app/assets/stylesheets/posts.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the posts controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

guides/code/getting_started/app/assets/stylesheets/welcome.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the welcome controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

guides/code/getting_started/app/controllers/application_controller.rb

@@ -1,3 +1,5 @@
 class ApplicationController < ActionController::Base
-  protect_from_forgery
+  # Prevent CSRF attacks by raising an exception.
+  # For APIs, you may want to use :null_session instead.
+  protect_from_forgery with: :exception
 end

guides/code/getting_started/app/controllers/comments_controller.rb

@@ -1,9 +1,10 @@
 class CommentsController < ApplicationController
-	http_basic_authenticate_with :name => "dhh", :password => "secret", :only => :destroy
 
+  http_basic_authenticate_with name: "dhh", password: "secret", only: :destroy
+
   def create
     @post = Post.find(params[:post_id])
-    @comment = @post.comments.create(params[:comment])
+    @comment = @post.comments.create(params[:comment].permit(:commenter, :body))
     redirect_to post_path(@post)
   end
 
@@ -13,5 +14,4 @@ def destroy
     @comment.destroy
     redirect_to post_path(@post)
   end
-
 end

guides/code/getting_started/app/controllers/posts_controller.rb

@@ -1,7 +1,7 @@
 class PostsController < ApplicationController
 
-  http_basic_authenticate_with :name => "dhh", :password => "secret", :except => [:index, :show]
-
+  http_basic_authenticate_with name: "dhh", password: "secret", except: [:index, :show]
+  
   def index
     @posts = Post.all
   end
@@ -10,38 +10,38 @@ def show
     @post = Post.find(params[:id])
   end
 
-  def new
-    @post = Post.new
+  def edit
+    @post = Post.find(params[:id])
   end
 
-  def create
-    @post = Post.new(params[:post])
+  def update
+    @post = Post.find(params[:id])
 
-    if @post.save
-      redirect_to :action => :show, :id => @post.id
+    if @post.update(params[:post].permit(:title, :text))
+      redirect_to action: :show, id: @post.id
     else
-      render 'new'
+      render 'edit'
     end
   end
 
-  def edit
-    @post = Post.find(params[:id])
+  def new
+    @post = Post.new
   end
 
-  def update
-    @post = Post.find(params[:id])
+  def create
+    @post = Post.new(params[:post].permit(:title, :text))
 
-    if @post.update(params[:post])
-      redirect_to :action => :show, :id => @post.id
+    if @post.save
+      redirect_to action: :show, id: @post.id
     else
-      render 'edit'
+      render 'new'
     end
   end
 
   def destroy
     @post = Post.find(params[:id])
     @post.destroy
 
-    redirect_to :action => :index
+    redirect_to action: :index
   end
 end

guides/code/getting_started/app/models/post.rb

@@ -1,6 +1,7 @@
 class Post < ActiveRecord::Base
-  validates :title, :presence => true,
-                    :length => { :minimum => 5 }
-
-  has_many :comments, :dependent => :destroy
+  has_many :comments, dependent: :destroy
+
+  validates :title,
+    presence: true,
+    length: { minimum: 5 }
 end

guides/code/getting_started/app/views/comments/_comment.html.erb

@@ -2,14 +2,14 @@
   <strong>Commenter:</strong>
   <%= comment.commenter %>
 </p>
-
+ 
 <p>
   <strong>Comment:</strong>
   <%= comment.body %>
 </p>
 
 <p>
   <%= link_to 'Destroy Comment', [comment.post, comment],
-               :method => :delete,
-               :data => { :confirm => 'Are you sure?' } %>
+               method: :delete,
+               data: { confirm: 'Are you sure?' } %>
 </p>