rails-tutorial

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm install 2.0.0 --with-openssl-dir=/usr/local/opt/openssl
Checking requirements for osx.
Certificates in '/usr/local/etc/openssl/cert.pem' are already up to date.
Requirements installation successful.
Installing Ruby from source to: /Users/hfeng/.rvm/rubies/ruby-2.0.0-p481, this may take a while depending on your cpu(s)...
ruby-2.0.0-p481 - #downloading ruby-2.0.0-p481, this may take a while depending on your connection...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 10.2M  100 10.2M    0     0  50421      0  0:03:32  0:03:32 --:--:--  141k
ruby-2.0.0-p481 - #extracting ruby-2.0.0-p481 to /Users/hfeng/.rvm/src/ruby-2.0.0-p481....
ruby-2.0.0-p481 - #configuring.................................................
ruby-2.0.0-p481 - #post-configuration.
ruby-2.0.0-p481 - #compiling................................................................................
ruby-2.0.0-p481 - #installing..............
ruby-2.0.0-p481 - #making binaries executable..
ruby-2.0.0-p481 - #downloading rubygems-2.2.2
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  404k  100  404k    0     0  95267      0  0:00:04  0:00:04 --:--:-- 95285
No checksum for downloaded archive, recording checksum in user configuration.
ruby-2.0.0-p481 - #extracting rubygems-2.2.2....
ruby-2.0.0-p481 - #removing old rubygems.........
$LANG was empty, setting up LANG=en_US, if it fails again try setting LANG to something sane and try again.
ruby-2.0.0-p481 - #installing rubygems-2.2.2...............
ruby-2.0.0-p481 - #gemset created /Users/hfeng/.rvm/gems/ruby-2.0.0-p481@global
ruby-2.0.0-p481 - #importing gemset /Users/hfeng/.rvm/gemsets/global.gems.........................................................
ruby-2.0.0-p481 - #generating global wrappers........
ruby-2.0.0-p481 - #gemset created /Users/hfeng/.rvm/gems/ruby-2.0.0-p481
ruby-2.0.0-p481 - #importing gemsetfile /Users/hfeng/.rvm/gemsets/default.gems evaluated to empty gem list
ruby-2.0.0-p481 - #generating default wrappers........
ruby-2.0.0-p481 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
Install of ruby-2.0.0-p481 - #complete
Ruby was built without documentation, to build it run: rvm docs generate-ri
hfengdeMacBook-Air:rails-tutorial hfeng$ which ruby
/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/ruby
hfengdeMacBook-Air:rails-tutorial hfeng$ ruby --version
ruby 2.0.0p481 (2014-05-08 revision 45883) [x86_64-darwin13.2.0]
hfengdeMacBook-Air:rails-tutorial hfeng$ rvm list

rvm rubies

=* ruby-2.0.0-p481 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

hfengdeMacBook-Air:rails-tutorial hfeng$

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm 2.0.0
hfengdeMacBook-Air:rails-tutorial hfeng$ rvm list

rvm rubies

=* ruby-2.0.0-p481 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm gemset list

gemsets for ruby-2.0.0-p481 (found in /Users/hfeng/.rvm/gems/ruby-2.0.0-p481)
=> (default)
   global

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm gemset create railstutorial_rails_4_0
ruby-2.0.0-p481 - #gemset created /Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0
ruby-2.0.0-p481 - #generating railstutorial_rails_4_0 wrappers........
hfengdeMacBook-Air:rails-tutorial hfeng$ rvm gemset list

gemsets for ruby-2.0.0-p481 (found in /Users/hfeng/.rvm/gems/ruby-2.0.0-p481)
=> (default)
   global
   railstutorial_rails_4_0

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm use 2.0.0@railstutorial_rails_4_0 --default
Using /Users/hfeng/.rvm/gems/ruby-2.0.0-p481 with gemset railstutorial_rails_4_0
hfengdeMacBook-Air:rails-tutorial hfeng$ rvm gemset list

gemsets for ruby-2.0.0-p481 (found in /Users/hfeng/.rvm/gems/ruby-2.0.0-p481)
   (default)
   global
=> railstutorial_rails_4_0

hfengdeMacBook-Air:rails-tutorial hfeng$ which gem
/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/gem
hfengdeMacBook-Air:rails-tutorial hfeng$ gem --version
2.2.2

hfengdeMacBook-Air:rails-tutorial hfeng$ gem update --system 2.1.9
Updating rubygems-update
Fetching: rubygems-update-2.1.9.gem (100%)
Successfully installed rubygems-update-2.1.9
Installing RubyGems 2.1.9
RubyGems 2.1.9 installed



------------------------------------------------------------------------------

RubyGems installed the following executables:
    /Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/gem

RubyGems system software updated
hfengdeMacBook-Air:rails-tutorial hfeng$ gem --version
2.1.9

install: --no-rdoc --no-ri
update: --no-rdoc --no-ri

hfengdeMacBook-Air:rails-tutorial hfeng$ rvm gemset list

gemsets for ruby-2.0.0-p481 (found in /Users/hfeng/.rvm/gems/ruby-2.0.0-p481)
   (default)
   global
=> railstutorial_rails_4_0

hfengdeMacBook-Air:rails-tutorial hfeng$ which gem
/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/gem
hfengdeMacBook-Air:rails-tutorial hfeng$ rvm info

ruby-2.0.0-p481@railstutorial_rails_4_0:

  system:
    uname:       "Darwin hfengdeMacBook-Air.local 13.2.0 Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64 x86_64"
    system:      "osx/10.9/x86_64"
    bash:        "/bin/bash => GNU bash, version 3.2.51(1)-release (x86_64-apple-darwin13)"
    zsh:         "/bin/zsh => zsh 5.0.2 (x86_64-apple-darwin13.0)"

  rvm:
    version:      "rvm 1.25.28 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
    updated:      "7 hours 7 minutes 2 seconds ago"
    path:         "/Users/hfeng/.rvm"

  ruby:
    interpreter:  "ruby"
    version:      "2.0.0p481"
    date:         "2014-05-08"
    platform:     "x86_64-darwin13.2.0"
    patchlevel:   "2014-05-08 revision 45883"
    full_version: "ruby 2.0.0p481 (2014-05-08 revision 45883) [x86_64-darwin13.2.0]"

  homes:
    gem:          "/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0"
    ruby:         "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481"

  binaries:
    ruby:         "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/ruby"
    irb:          "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/irb"
    gem:          "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/gem"
    rake:         "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin/rake"

  environment:
    PATH:         "/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/bin:/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@global/bin:/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr:/Users/hfeng/.rvm/bin"
    GEM_HOME:     "/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0"
    GEM_PATH:     "/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0:/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@global"
    MY_RUBY_HOME: "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481"
    IRBRC:        "/Users/hfeng/.rvm/rubies/ruby-2.0.0-p481/.irbrc"
    RUBYOPT:      ""
    gemset:       "railstutorial_rails_4_0"

hfengdeMacBook-Air:rails-tutorial hfeng$ gem install rails --version 4.0.8
Fetching: i18n-0.6.11.gem (100%)
Successfully installed i18n-0.6.11
Fetching: multi_json-1.10.1.gem (100%)
Successfully installed multi_json-1.10.1
Fetching: tzinfo-0.3.40.gem (100%)
Successfully installed tzinfo-0.3.40
Fetching: thread_safe-0.3.4.gem (100%)
Successfully installed thread_safe-0.3.4
Fetching: activesupport-4.0.8.gem (100%)
Successfully installed activesupport-4.0.8
Fetching: builder-3.1.4.gem (100%)
Successfully installed builder-3.1.4
Fetching: rack-1.5.2.gem (100%)
Successfully installed rack-1.5.2
Fetching: rack-test-0.6.2.gem (100%)
Successfully installed rack-test-0.6.2
Fetching: erubis-2.7.0.gem (100%)
Successfully installed erubis-2.7.0
Fetching: actionpack-4.0.8.gem (100%)
Successfully installed actionpack-4.0.8
Fetching: activemodel-4.0.8.gem (100%)
Successfully installed activemodel-4.0.8
Fetching: arel-4.0.2.gem (100%)
Successfully installed arel-4.0.2
Fetching: activerecord-deprecated_finders-1.0.3.gem (100%)
Successfully installed activerecord-deprecated_finders-1.0.3
Fetching: activerecord-4.0.8.gem (100%)
Successfully installed activerecord-4.0.8
Fetching: mime-types-1.25.1.gem (100%)
Successfully installed mime-types-1.25.1
Fetching: polyglot-0.3.5.gem (100%)
Successfully installed polyglot-0.3.5
Fetching: treetop-1.4.15.gem (100%)
Successfully installed treetop-1.4.15
Fetching: mail-2.5.4.gem (100%)
Successfully installed mail-2.5.4
Fetching: actionmailer-4.0.8.gem (100%)
Successfully installed actionmailer-4.0.8
Fetching: thor-0.19.1.gem (100%)
Successfully installed thor-0.19.1
Fetching: railties-4.0.8.gem (100%)
Successfully installed railties-4.0.8
Fetching: hike-1.2.3.gem (100%)
Successfully installed hike-1.2.3
Fetching: tilt-1.4.1.gem (100%)
Successfully installed tilt-1.4.1
Fetching: sprockets-2.12.1.gem (100%)
Successfully installed sprockets-2.12.1
Fetching: sprockets-rails-2.1.3.gem (100%)
Successfully installed sprockets-rails-2.1.3
Fetching: rails-4.0.8.gem (100%)
Successfully installed rails-4.0.8
26 gems installed
hfengdeMacBook-Air:rails-tutorial hfeng$ which rails
/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/bin/rails
hfengdeMacBook-Air:rails-tutorial hfeng$ rails -v
Rails 4.0.8

hfengdeMacBook-Air:exam hfeng$ mkdir rails_projects
hfengdeMacBook-Air:exam hfeng$ cd rails_projects/
hfengdeMacBook-Air:rails_projects hfeng$ which rails
/Users/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/bin/rails
hfengdeMacBook-Air:rails_projects hfeng$ rails --version
Rails 4.0.8
hfengdeMacBook-Air:rails_projects hfeng$ rails new first_app
      create
      create  README.rdoc
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/assets/javascripts/application.js
      create  app/assets/stylesheets/application.css
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/views/layouts/application.html.erb
      create  app/assets/images/.keep
      create  app/mailers/.keep
      create  app/models/.keep
      create  app/controllers/concerns/.keep
      create  app/models/concerns/.keep
      create  bin
      create  bin/bundle
      create  bin/rails
      create  bin/rake
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/filter_parameter_logging.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/secret_token.rb
      create  config/initializers/session_store.rb
      create  config/initializers/wrap_parameters.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  lib
      create  lib/tasks
      create  lib/tasks/.keep
      create  lib/assets
      create  lib/assets/.keep
      create  log
      create  log/.keep
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/favicon.ico
      create  public/robots.txt
      create  test/fixtures
      create  test/fixtures/.keep
      create  test/controllers
      create  test/controllers/.keep
      create  test/mailers
      create  test/mailers/.keep
      create  test/models
      create  test/models/.keep
      create  test/helpers
      create  test/helpers/.keep
      create  test/integration
      create  test/integration/.keep
      create  test/test_helper.rb
      create  tmp/cache
      create  tmp/cache/assets
      create  vendor/assets/javascripts
      create  vendor/assets/javascripts/.keep
      create  vendor/assets/stylesheets
      create  vendor/assets/stylesheets/.keep
         run  bundle install
Fetching gem metadata from https://rubygems.org/..........
Fetching additional metadata from https://rubygems.org/..
Resolving dependencies...
Installing rake 10.3.2
Using i18n 0.6.11
Installing minitest 4.7.5
Using multi_json 1.10.1
Using thread_safe 0.3.4
Using tzinfo 0.3.40
Using activesupport 4.0.8
Using builder 3.1.4
Using erubis 2.7.0
Using rack 1.5.2
Using rack-test 0.6.2
Using actionpack 4.0.8
Using mime-types 1.25.1
Using polyglot 0.3.5
Using treetop 1.4.15
Using mail 2.5.4
Using actionmailer 4.0.8
Using activemodel 4.0.8
Using activerecord-deprecated_finders 1.0.3
Using arel 4.0.2
Using activerecord 4.0.8
Using bundler 1.6.4
Installing coffee-script-source 1.7.1
Installing execjs 2.2.1
Installing coffee-script 2.3.0
Using thor 0.19.1
Using railties 4.0.8
Installing coffee-rails 4.0.1
Using hike 1.2.3
Installing jbuilder 1.5.3
Installing jquery-rails 3.1.1
Installing json 1.8.1
Using tilt 1.4.1
Installing sprockets 2.11.0
Using sprockets-rails 2.1.3
Using rails 4.0.8
Installing rdoc 4.1.1
Installing sass 3.2.19
Installing sass-rails 4.0.3
Installing sdoc 0.4.0
Installing sqlite3 1.3.9
Installing turbolinks 2.2.2
Installing uglifier 2.5.1
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.
Post-install message from rdoc:
Depending on your version of ruby, you may need to install ruby rdoc/ri data:

<= 1.8.6 : unsupported
 = 1.8.7 : gem install rdoc-data; rdoc-data --install
 = 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!

 source 'https://rubygems.org'
+ruby '2.0.0'
+#ruby-gemsets=railstutorial_rails_4_0

 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '4.0.8'

 # Use sqlite3 as the database for Active Record
-gem 'sqlite3'
+group :development do
+  gem 'sqlite3', '1.3.8'
+end

 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 4.0.2'
+gem 'sass-rails', '4.0.1'

 # Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 1.3.0'
+gem 'uglifier', '2.1.1'

 # Use CoffeeScript for .js.coffee assets and views
-gem 'coffee-rails', '~> 4.0.0'
+gem 'coffee-rails', '4.0.1'

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

 # Use jquery as the JavaScript library
-gem 'jquery-rails'
+gem 'jquery-rails', '3.0.4'

 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
-gem 'turbolinks'
+gem 'turbolinks', '1.1.1'

 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
-gem 'jbuilder', '~> 1.2'
+gem 'jbuilder', '1.0.2'

 group :doc do
   # bundle exec rake doc:rails generates the API under doc/api.
-  gem 'sdoc', require: false
+  gem 'sdoc', '0.3.20', require: false
 end

 # Use ActiveModel has_secure_password

ruby '2.0.0'
#ruby-gemset=railstutorial_rails_4_0

hfeng@ubuntu1204:~/rails_projects/first_app$ bundle update
Fetching source index from https://rubygems.org/
Resolving dependencies........................
Using rake 10.3.2
Using i18n 0.6.11
Using minitest 4.7.5
Using multi_json 1.10.1
Using thread_safe 0.3.4
Using tzinfo 0.3.40
Using activesupport 4.0.8
Using builder 3.1.4
Using erubis 2.7.0
Using rack 1.5.2
Using rack-test 0.6.2
Using actionpack 4.0.8
Using mime-types 1.25.1
Using polyglot 0.3.5
Using treetop 1.4.15
Using mail 2.5.4
Using actionmailer 4.0.8
Using activemodel 4.0.8
Using activerecord-deprecated_finders 1.0.3
Using arel 4.0.2
Using activerecord 4.0.8
Using bundler 1.6.2
Using coffee-script-source 1.7.1
Using execjs 2.2.1
Using coffee-script 2.3.0
Using thor 0.19.1
Using railties 4.0.8
Using coffee-rails 4.0.1
Using hike 1.2.3
Installing jbuilder 1.0.2 (was 1.5.3)
Installing jquery-rails 3.0.4 (was 3.1.1)
Using json 1.8.1
Using tilt 1.4.1
Using sprockets 2.12.1 (was 2.11.0)
Installing sprockets-rails 2.0.1 (was 2.1.3)
Using rails 4.0.8
Installing rdoc 3.12.2 (was 4.1.1)
Installing sass 3.3.10 (was 3.2.19)
Installing sass-rails 4.0.1 (was 4.0.3)
Installing sdoc 0.3.20 (was 0.4.0)
Installing sqlite3 1.3.8 (was 1.3.9)
Installing turbolinks 1.1.1 (was 2.2.2)
Installing uglifier 2.1.1 (was 2.5.3)
Your bundle is updated!

hfeng@ubuntu1204:~/rails_projects/first_app$ bundle install
Using rake 10.3.2
Using i18n 0.6.11
Using minitest 4.7.5
Using multi_json 1.10.1
Using thread_safe 0.3.4
Using tzinfo 0.3.40
Using activesupport 4.0.8
Using builder 3.1.4
Using erubis 2.7.0
Using rack 1.5.2
Using rack-test 0.6.2
Using actionpack 4.0.8
Using mime-types 1.25.1
Using polyglot 0.3.5
Using treetop 1.4.15
Using mail 2.5.4
Using actionmailer 4.0.8
Using activemodel 4.0.8
Using activerecord-deprecated_finders 1.0.3
Using arel 4.0.2
Using activerecord 4.0.8
Using coffee-script-source 1.7.1
Using execjs 2.2.1
Using coffee-script 2.3.0
Using thor 0.19.1
Using railties 4.0.8
Using coffee-rails 4.0.1
Using hike 1.2.3
Using jbuilder 1.0.2
Using jquery-rails 3.0.4
Using json 1.8.1
Using bundler 1.6.2
Using tilt 1.4.1
Using sprockets 2.12.1
Using sprockets-rails 2.0.1
Using rails 4.0.8
Using rdoc 3.12.2
Using sass 3.3.10
Using sass-rails 4.0.1
Using sdoc 0.3.20
Using sqlite3 1.3.8
Using turbolinks 1.1.1
Using uglifier 2.1.1
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.

hfeng@ubuntu1204:~/rails_projects/first_app$ rails server
/home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/execjs-2.2.1/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/execjs-2.2.1/lib/execjs.rb:5:in `<module:ExecJS>'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/execjs-2.2.1/lib/execjs.rb:4:in `<top (required)>'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/uglifier-2.1.1/lib/uglifier.rb:3:in `require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/uglifier-2.1.1/lib/uglifier.rb:3:in `<top (required)>'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `each'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `block in require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `each'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler.rb:132:in `require'
    from /home/hfeng/rails_projects/first_app/config/application.rb:7:in `<top (required)>'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/railties-4.0.8/lib/rails/commands.rb:74:in `require'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/railties-4.0.8/lib/rails/commands.rb:74:in `block in <top (required)>'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/railties-4.0.8/lib/rails/commands.rb:71:in `tap'
    from /home/hfeng/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/railties-4.0.8/lib/rails/commands.rb:71:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'
hfeng@ubuntu1204:~/rails_projects/first_app$ sudo apt-get install nodejs
[sudo] password for hfeng:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  libc-ares2 libev4 libicu48 libv8-3.7.12.22
The following NEW packages will be installed:
  libc-ares2 libev4 libicu48 libv8-3.7.12.22 nodejs
0 upgraded, 5 newly installed, 0 to remove and 56 not upgraded.
Need to get 10.2 MB of archives.
After this operation, 28.6 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://us.archive.ubuntu.com/ubuntu/ precise/main libc-ares2 amd64 1.7.5-1 [36.6 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main libicu48 amd64 4.8.1.1-3ubuntu0.1 [8105 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu/ precise/universe libv8-3.7.12.22 amd64 3.7.12.22-3 [1369 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu/ precise/universe libev4 amd64 1:4.11-1 [29.0 kB]
Get:5 http://us.archive.ubuntu.com/ubuntu/ precise/universe nodejs amd64 0.6.12~dfsg1-1ubuntu1 [664 kB]
Fetched 10.2 MB in 1min 26s (119 kB/s)
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend will not work on a dumb terminal, an emacs shell buffer, or without a controlling terminal.)
debconf: falling back to frontend: Readline
Selecting previously unselected package libc-ares2.
(Reading database ... 57743 files and directories currently installed.)
Unpacking libc-ares2 (from .../libc-ares2_1.7.5-1_amd64.deb) ...
Selecting previously unselected package libicu48.
Unpacking libicu48 (from .../libicu48_4.8.1.1-3ubuntu0.1_amd64.deb) ...
Selecting previously unselected package libv8-3.7.12.22.
Unpacking libv8-3.7.12.22 (from .../libv8-3.7.12.22_3.7.12.22-3_amd64.deb) ...
Selecting previously unselected package libev4.
Unpacking libev4 (from .../libev4_1%3a4.11-1_amd64.deb) ...
Selecting previously unselected package nodejs.
Unpacking nodejs (from .../nodejs_0.6.12~dfsg1-1ubuntu1_amd64.deb) ...
Processing triggers for man-db ...
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend will not work on a dumb terminal, an emacs shell buffer, or without a controlling terminal.)
debconf: falling back to frontend: Readline
Setting up libc-ares2 (1.7.5-1) ...
Setting up libicu48 (4.8.1.1-3ubuntu0.1) ...
Setting up libv8-3.7.12.22 (3.7.12.22-3) ...
Setting up libev4 (1:4.11-1) ...
Setting up nodejs (0.6.12~dfsg1-1ubuntu1) ...
update-alternatives: using /usr/bin/node to provide /usr/bin/js (js) in auto mode.
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
hfeng@ubuntu1204:~/rails_projects/first_app$ rails server
=> Booting WEBrick
=> Rails 4.0.8 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2014-07-06 02:32:27] INFO  WEBrick 1.3.1
[2014-07-06 02:32:27] INFO  ruby 2.0.0 (2014-05-08) [x86_64-linux]
[2014-07-06 02:32:27] INFO  WEBrick::HTTPServer#start: pid=19734 port=3000

hfeng@ubuntu1204:~/rails_projects/first_app$ heroku rename hfeng-railstutorial
heroku rename hfeng-railstutorial
Renaming peaceful-falls-3143 to hfeng-railstutorial... done
http://hfeng-railstutorial.herokuapp.com/ | git@heroku.com:hfeng-railstutorial.git
Git remote heroku updated
hfeng@ubuntu1204:~/rails_projects/first_app$ git remote -v
git remote -v
heroku  git@heroku.com:hfeng-railstutorial.git (fetch)
heroku  git@heroku.com:hfeng-railstutorial.git (push)

# config/routes.rb
DemoApp::Applicatin.routes.draw do
  resources :users
  # ...
end

# app/controllers/users_controller.rb
class UsersController < ApplicationController
  # ...

  def index
    # ...
  end

  def show
    # ...
  end

  def new
    # ...
  end

  def create
    # ...
  end

  def edit
    # ...
  end

  def update
    # ...
  end

  def destroy
    # ...
  end
end

hfengdeMacBook-Air:demo_app hfeng$ rails generate scaffold Micropost content:string user_id:integer
      invoke  active_record
      create    db/migrate/20140721073734_create_microposts.rb
      create    app/models/micropost.rb
      invoke    test_unit
      create      test/models/micropost_test.rb
      create      test/fixtures/microposts.yml
      invoke  resource_route
       route    resources :microposts
      invoke  jbuilder_scaffold_controller
      create    app/controllers/microposts_controller.rb
      invoke    erb
      create      app/views/microposts
      create      app/views/microposts/index.html.erb
      create      app/views/microposts/edit.html.erb
      create      app/views/microposts/show.html.erb
      create      app/views/microposts/new.html.erb
      create      app/views/microposts/_form.html.erb
      invoke    test_unit
      create      test/controllers/microposts_controller_test.rb
      invoke    helper
      create      app/helpers/microposts_helper.rb
      invoke      test_unit
      create        test/helpers/microposts_helper_test.rb
      invoke    jbuilder
       exist      app/views/microposts
      create      app/views/microposts/index.json.jbuilder
      create      app/views/microposts/show.json.jbuilder
      invoke  assets
      invoke    coffee
      create      app/assets/javascripts/microposts.js.coffee
      invoke    scss
      create      app/assets/stylesheets/microposts.css.scss
      invoke  scss
   identical    app/assets/stylesheets/scaffolds.css.scss

hfengdeMacBook-Air:demo_app hfeng$ rake db:migrate
== 20140721073734 CreateMicroposts: migrating =================================
-- create_table(:microposts)
   -> 0.0078s
== 20140721073734 CreateMicroposts: migrated (0.0079s) ========================

diff --git a/config/routes.rb b/config/routes.rb
index 56c203d..d487887 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,4 +1,6 @@
 DemoApp::Application.routes.draw do
+  resources :microposts
+
   resources :users

   # The priority is based upon order of creation: first created -> highest priority.

diff --git a/app/models/micropost.rb b/app/models/micropost.rb
index f333428..91a6135 100644
--- a/app/models/micropost.rb
+++ b/app/models/micropost.rb
@@ -1,2 +1,3 @@
 class Micropost < ActiveRecord::Base
+  validates :content, length: { maximum: 140 }
 end

# File activemodel/lib/active_model/validations/validates.rb, line 100
      def validates(*attributes)
        defaults = attributes.extract_options!.dup
        validations = defaults.slice!(*_validates_default_keys)

        raise ArgumentError, "You need to supply at least one attribute" if attributes.empty?
        raise ArgumentError, "You need to supply at least one validation" if validations.empty?

        defaults[:attributes] = attributes

        validations.each do |key, options|
          next unless options
          key = "#{key.to_s.camelize}Validator"

          begin
            validator = key.include?('::') ? key.constantize : const_get(key)
          rescue NameError
            raise ArgumentError, "Unknown validator: '#{key}'"
          end

          validates_with(validator, defaults.merge(_parse_validates_options(options)))
        end
      end

def val(*attributes)
  attributes.each_with_index do |a, i|
    puts "NO.#{i} element is #{a}, its type is #{a.class}"
  end
end

val :content, length: { maximum: 140 }

################################################################
# <===================OUTPUT===================>               #
# NO.0 element is content, its type is Symbol                  #
# NO.1 element is {:length=>{:maximum=>140}}, its type is Hash #
################################################################

diff --git a/app/models/micropost.rb b/app/models/micropost.rb
index 91a6135..ea092e5 100644
--- a/app/models/micropost.rb
+++ b/app/models/micropost.rb
@@ -1,3 +1,4 @@
 class Micropost < ActiveRecord::Base
+  belongs_to :user
   validates :content, length: { maximum: 140 }
 end
    Modified   app/models/user.rb
diff --git a/app/models/user.rb b/app/models/user.rb
index 4a57cf0..d41de93 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,2 +1,3 @@
 class User < ActiveRecord::Base
+  has_many :microposts
 end

2.0.0-p481 :001 > first_user = User.first
  User Load (0.2ms)  SELECT "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT 1
 => #<User id: 1, name: "haoran feng", email: "haoran.feng@sap.com", created_at: "2014-07-21 08:44:55", updated_at: "2014-07-21 08:44:55">
2.0.0-p481 :002 > first_user.methods
=> [:autosave_associated_records_for_microposts, .....    :microposts, ...]
2.0.0-p481 :003 > first_user.microposts
  Micropost Load (1.8ms)  SELECT "microposts".* FROM "microposts" WHERE "microposts"."user_id" = ?  [["user_id", 1]]
 => #<ActiveRecord::Associations::CollectionProxy [#<Micropost id: 1, content: "hello world", user_id: 1, created_at: "2014-07-21 08:45:28", updated_at: "2014-07-21 08:45:28">]>
2.0.0-p481 :004 > exit

hfengdeMacBook-Air:demo_app hfeng$ heroku login
Enter your Heroku credentials.
Email: harrifeng@gmail.com
Password (typing will be hidden):

Authentication successful.
hfengdeMacBook-Air:demo_app hfeng$ heroku create
heroku create
Creating fast-eyrie-3133... done, stack is cedar
http://fast-eyrie-3133.herokuapp.com/ | git@heroku.com:fast-eyrie-3133.git
Git remote heroku added
hfengdeMacBook-Air:demo_app hfeng$ heroku rename hfeng-demo_app
heroku rename hfeng-demo_app
Renaming fast-eyrie-3133 to hfeng-demo_app... failed
 !    Name must start with a letter and can only contain lowercase letters, numbers, and dashes.
hfengdeMacBook-Air:demo_app hfeng$ heroku rename hfeng-demo-app
heroku rename hfeng-demo-app
Renaming fast-eyrie-3133 to hfeng-demo-app... done
http://hfeng-demo-app.herokuapp.com/ | git@heroku.com:hfeng-demo-app.git
Git remote heroku updated
hfengdeMacBook-Air:demo_app hfeng$ git remote -v
git remote -v
heroku  git@heroku.com:hfeng-demo-app.git (fetch)
heroku  git@heroku.com:hfeng-demo-app.git (push)
origin  git@github.com:harrifeng/demo_app.git (fetch)
origin  git@github.com:harrifeng/demo_app.git (push)
hfengdeMacBook-Air:demo_app hfeng$ git push heroku master
git push heroku master
Initializing repository, done.
Counting objects: 147, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (132/132), done.
Writing objects: 100% (147/147), 24.69 KiB | 0 bytes/s, done.
Total 147 (delta 31), reused 0 (delta 0)

-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.0.0
-----> Installing dependencies using 1.6.3
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
       Fetching gem metadata from https://rubygems.org/..........
       Fetching additional metadata from https://rubygems.org/..
       Installing minitest 4.7.5
       Installing i18n 0.6.11
       Installing rake 10.3.2
       Installing thread_safe 0.3.4
       Installing multi_json 1.10.1
       Installing builder 3.1.4
       Installing tzinfo 0.3.40
       Installing erubis 2.7.0
       Installing mime-types 1.25.1
       Installing polyglot 0.3.5
       Installing activerecord-deprecated_finders 1.0.3
       Installing rack 1.5.2
       Installing coffee-script-source 1.7.1
       Installing arel 4.0.2
       Installing execjs 2.2.1
       Installing thor 0.19.1
       Installing hike 1.2.3
       Using bundler 1.6.3
       Installing tilt 1.4.1
       Installing rails_serve_static_assets 0.0.2
       Installing rails_stdout_logging 0.0.3
       Installing json 1.8.1
       Installing sass 3.3.10
       Installing activesupport 4.0.8
       Installing rack-test 0.6.2
       Installing treetop 1.4.15
       Installing coffee-script 2.3.0
       Installing uglifier 2.1.1
       Installing rails_12factor 0.0.2
       Installing sprockets 2.12.1
       Installing activemodel 4.0.8
       Installing rdoc 3.12.2
       Installing jbuilder 1.0.2
       Installing mail 2.5.4
       Installing actionpack 4.0.8
       Installing sdoc 0.3.20
       Installing activerecord 4.0.8
       Installing actionmailer 4.0.8
       Installing sprockets-rails 2.0.1
       Installing pg 0.15.1
       Installing railties 4.0.8
       Installing coffee-rails 4.0.1
       Installing jquery-rails 3.0.4
       Installing turbolinks 1.1.1
       Installing sass-rails 4.0.1
       Installing rails 4.0.8
       Your bundle is complete!
       Gems in the groups development and test were not installed.
       It was installed into ./vendor/bundle
       Post-install message from rdoc:
       Depending on your version of ruby, you may need to install ruby rdoc/ri data:
       <= 1.8.6 : unsupported
       = 1.8.7 : gem install rdoc-data; rdoc-data --install
       = 1.9.1 : gem install rdoc-data; rdoc-data --install
       >= 1.9.2 : nothing to do! Yay!
       Bundle completed (20.98s)
       Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       I, [2014-07-21T09:36:55.949609 #1017]  INFO -- : Writing /tmp/build_b8be5592-5246-464e-ba6a-1c052a86b661/public/assets/application-0101f279a9c8c24ec8783f21287568ab.js
       I, [2014-07-21T09:36:56.005265 #1017]  INFO -- : Writing /tmp/build_b8be5592-5246-464e-ba6a-1c052a86b661/public/assets/application-d0e6f02b399570c37fedbe45a0393e35.css
       Asset precompilation completed (7.07s)
       Cleaning assets
       Running: rake assets:clean
-----> WARNINGS:
       No Procfile detected, using the default web server (webrick)
       https://devcenter.heroku.com/articles/ruby-default-web-server
-----> Discovering process types
       Procfile declares types -> (none)
       Default types for Ruby  -> console, rake, web, worker

-----> Compressing... done, 21.1MB
-----> Launching... done, v6
       http://hfeng-demo-app.herokuapp.com/ deployed to Heroku

To git@heroku.com:hfeng-demo-app.git
 * [new branch]      master -> master
hfengdeMacBook-Air:demo_app hfeng$ heroku run rake db:migrate
heroku run rake db:migrate
Running `rake db:migrate` attached to terminal... up, run.5711
Migrating to CreateUsers (20140721023511)
== 20140721023511 CreateUsers: migrating ======================================
-- create_table(:users)
   -> 0.0438s
== 20140721023511 CreateUsers: migrated (0.0441s) =============================

Migrating to CreateMicroposts (20140721073734)
== 20140721073734 CreateMicroposts: migrating =================================
-- create_table(:microposts)
   -> 0.0322s
== 20140721073734 CreateMicroposts: migrated (0.0324s) ========================

hfeng@ubuntu1204:~/rails_projects/sample_app$ rails generate integration_test static_pages
      invoke  rspec
      create    spec/requests/static_pages_spec.rb

diff --git a/spec/requests/static_pages_spec.rb b/spec/requests/static_pages_spec.rb
index 7c64515..f3993c0 100644
--- a/spec/requests/static_pages_spec.rb
+++ b/spec/requests/static_pages_spec.rb
@@ -1,11 +1,10 @@
 require 'spec_helper'

 describe "Static Pages" do
-  describe "GET /static_pages" do
-    it "works! (now write some real specs)" do
-      # Run the generator again with the --webrat flag if you want to use webrat methods/matchers
-      get static_pages_index_path
-      response.status.should be(200)
+  describe "Home page" do
+    it "should have the content 'Sample App'" do
+      visit '/static_pages/home'
+      expect(page).to have_content('Sample App')
     end
   end
 end

diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 943bc19..031f92c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -39,4 +39,5 @@ RSpec.configure do |config|
   # the seed, which is printed after each run.
   #     --seed 1234
   config.order = "random"
+  config.include Capybara::DSL
 end

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
F

Failures:

  1) Static Pages Home page should have the content 'Sample App'
     Failure/Error: expect(page).to have_content('Sample App')
       expected #has_content?("Sample App") to return true, got false
     # ./spec/requests/static_pages_spec.rb:7:in `block (3 levels) in <top (required)>'

Finished in 0.33291 seconds
1 example, 1 failure

Failed examples:

rspec ./spec/requests/static_pages_spec.rb:5 # Static Pages Home page should have the content 'Sample App'

Randomized with seed 44199

diff --git a/app/views/static_pages/home.html.erb b/app/views/static_pages/home.html.erb
index af94c7f..d4f4fe7 100644
--- a/app/views/static_pages/home.html.erb
+++ b/app/views/static_pages/home.html.erb
@@ -1,2 +1,6 @@
-<h1>StaticPages#home</h1>
-<p>Find me in app/views/static_pages/home.html.erb</p>
+<h1>Sample App</h1>
+<p>
+  This is the ome page for the
+  <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
+  sample application.
+</p>

diff --git a/app/views/static_pages/help.html.erb b/app/views/static_pages/help.html.erb
index 61896f5..bb57b44 100644
--- a/app/views/static_pages/help.html.erb
+++ b/app/views/static_pages/help.html.erb
@@ -1,2 +1,7 @@
-<h1>StaticPages#help</h1>
-<p>Find me in app/views/static_pages/help.html.erb</p>
+<h1>Help</h1>
+<p>
+  Get help on the Ruby on Rails Tutorial at the
+  <a href="http://railstutorial.org/help">Rails Tutorial help page</a>
+  To get help on this sample app, see the
+  <a href="http://railstutorial.org/book">Rails Tutorial book</a>
+</p>
diff --git a/spec/requests/static_pages_spec.rb b/spec/requests/static_pages_spec.rb
index 432450c..2f65d48 100644
--- a/spec/requests/static_pages_spec.rb
+++ b/spec/requests/static_pages_spec.rb
@@ -2,9 +2,17 @@ require 'spec_helper'

 describe "Static Pages" do
   describe "Home page" do
+
     it "should have the content 'Sample App'" do
       visit '/static_pages/home'
       expect(page).to have_content('Sample App')
     end
   end
+
+  describe "Help page" do
+    it "should have the content 'Help'" do
+      visit '/static_pages/help'
+      expect(page).to have_content('Help')
+    end
+  end
 end

diff --git a/config/routes.rb b/config/routes.rb
index f3d176d..d13c93c 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,7 @@
 SampleApp::Application.routes.draw do
   get "static_pages/home"
   get "static_pages/help"
+  get "static_pages/about"
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
F..

Failures:

  1) Static Pages About page should have the content 'About Us'
     Failure/Error: visit '/static_pages/about'
     AbstractController::ActionNotFound:
       The action 'about' could not be found for StaticPagesController
     # ./spec/requests/static_pages_spec.rb:21:in `block (3 levels) in <top (required)>'

diff --git a/app/controllers/static_pages_controller.rb b/app/controllers/static_pages_controller.rb
index c76b925..19f79a9 100644
--- a/app/controllers/static_pages_controller.rb
+++ b/app/controllers/static_pages_controller.rb
@@ -4,4 +4,7 @@ class StaticPagesController < ApplicationController

   def help
   end
+
+  def about
+  end
 end

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
F..

Failures:

  1) Static Pages About page should have the content 'About Us'
     Failure/Error: visit '/static_pages/about'
     ActionView::MissingTemplate:
       Missing template static_pages/about, application/about with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/hfeng/rails_projects/sample_app/app/views"
     # ./spec/requests/static_pages_spec.rb:21:in `block (3 levels) in <top (required)>'

Finished in 0.05173 seconds
3 examples, 1 failure

Failed examples:

rspec ./spec/requests/static_pages_spec.rb:20 # Static Pages About page should have the content 'About Us'

Randomized with seed 63833

<!-- sample_app/app/views/static_pages/about.html.erb -->

<h1>About Us</h1>
<p>
  The <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
  is a project to make a book and screencasts to teach web development
  with <a href="http://rubyonrails.org/">Ruby on Rails</a>. This
  is the sample application for the tutorial.
</p>

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
...

Finished in 0.05589 seconds
3 examples, 0 failures

Randomized with seed 39259

mv app/views/layouts/application.html.erb foobar

@@ -2,11 +2,14 @@ require 'spec_helper'

 describe "Static Pages" do
   describe "Home page" do
-
     it "should have the content 'Sample App'" do
       visit '/static_pages/home'
       expect(page).to have_content('Sample App')
     end
+    it "should have the right title 'Home'" do
+      visit '/static_pages/home'
+      expect(page).to have_title("Ruby on Rails Tutorial Sample App | Home")
+    end
   end

   describe "Help page" do
@@ -14,6 +17,10 @@ describe "Static Pages" do
       visit '/static_pages/help'
       expect(page).to have_content('Help')
     end
+    it "should have the right title 'Help'" do
+      visit '/static_pages/help'
+      expect(page).to have_title("Ruby on Rails Tutorial Sample App | Help")
+    end
   end

   describe "About page" do
@@ -21,6 +28,9 @@ describe "Static Pages" do
       visit '/static_pages/about'
       expect(page).to have_content('About Us')
     end
+    it "should have the right title 'About Us'" do
+      visit '/static_pages/about'
+      expect(page).to have_title("Ruby on Rails Tutorial Sample App | About Us")
+    end
   end
-
 end

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
F.F.F.

Failures:

  1) Static Pages Home page should have the right title 'Home'
     Failure/Error: expect(page).to have_title("Ruby on Rails Tutorial Sample App | Home")
       expected #has_title?("Ruby on Rails Tutorial Sample App | Home") to return true, got false
     # ./spec/requests/static_pages_spec.rb:11:in `block (3 levels) in <top (required)>'

  2) Static Pages Help page should have the right title 'Help'
     Failure/Error: expect(page).to have_title("Ruby on Rails Tutorial Sample App | Help")
       expected #has_title?("Ruby on Rails Tutorial Sample App | Help") to return true, got false
     # ./spec/requests/static_pages_spec.rb:22:in `block (3 levels) in <top (required)>'

  3) Static Pages About page should have the right title 'About Us'
     Failure/Error: expect(page).to have_title("Ruby on Rails Tutorial Sample App | About Us")
       expected #has_title?("Ruby on Rails Tutorial Sample App | About Us") to return true, got false
     # ./spec/requests/static_pages_spec.rb:33:in `block (3 levels) in <top (required)>'

Finished in 0.05635 seconds
6 examples, 3 failures

Failed examples:

rspec ./spec/requests/static_pages_spec.rb:9 # Static Pages Home page should have the right title 'Home'
rspec ./spec/requests/static_pages_spec.rb:20 # Static Pages Help page should have the right title 'Help'
rspec ./spec/requests/static_pages_spec.rb:31 # Static Pages About page should have the right title 'About Us'

Randomized with seed 2602

<!-- app/views/static_pages/home.html.erb -->
<% provide(:title, 'Home') %>
<!DOCTYPE html>
<html>
  <head>
    <title>Ruby on Rails Tutorial Sample App | <%= yield(:title) %></title>
  </head>
  <body>
    <h1>Sample App</h1>
    <p>
      This is the home page for the
      <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
      sample application.
    </p>
  </body>
</html>

<% provide(:title, 'Foo') %>
<!DOCTYPE html>
<html>
  <head>
    <title>Ruby on Rails Tutorial Sample App | <%= yield(:title) %></title>
  </head>


  <!-- .... -->
</html>

 <html>
 <head>
-  <title>SampleApp</title>
+  <title>Ruby on Rails Tutorial Sample App | <% yield(:title) %></title>

<!DOCTYPE html>
<html>
<head>
  <title>Ruby on Rails Tutorial Sample App | <% yield(:title) %></title>
  <%= stylesheet_link_tag    "application", media: "all", "data-turbolinks-track" => true %>
  <%= javascript_include_tag "application", "data-turbolinks-track" => true %>
  <%= csrf_meta_tags %>
</head>
<body>

<%= yield %>

</body>
</html>

diff --git a/app/views/static_pages/about.html.erb b/app/views/static_pages/about.html.erb
index 463bdb3..26012f2 100644
--- a/app/views/static_pages/about.html.erb
+++ b/app/views/static_pages/about.html.erb
@@ -1,5 +1,4 @@
-<!-- sample_app/app/views/static_pages/about.html.erb -->
-
+<% provide(:title, 'About Us') %>
 <h1>About Us</h1>
 <p>
   The <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
    Modified   app/views/static_pages/help.html.erb
diff --git a/app/views/static_pages/help.html.erb b/app/views/static_pages/help.html.erb
index bb57b44..50245e4 100644
--- a/app/views/static_pages/help.html.erb
+++ b/app/views/static_pages/help.html.erb
@@ -1,3 +1,4 @@
+<% provide(:title, 'Help') %>
 <h1>Help</h1>
 <p>
   Get help on the Ruby on Rails Tutorial at the
    Modified   app/views/static_pages/home.html.erb
diff --git a/app/views/static_pages/home.html.erb b/app/views/static_pages/home.html.erb
index d4f4fe7..f184b43 100644
--- a/app/views/static_pages/home.html.erb
+++ b/app/views/static_pages/home.html.erb
@@ -1,3 +1,4 @@
+<% provide(:title, 'Home') %>
 <h1>Sample App</h1>
 <p>
   This is the ome page for the
    Modified   spec/requests/static_pages_spec.rb

hfeng@ubuntu1204:~/rails_projects/sample_app$ rspec spec/requests/static_pages_spec.rb
......

Finished in 0.06567 seconds
6 examples, 0 failures

Randomized with seed 19940

2.0.0-p481 :001 > 17 + 42 # Integer addition
 => 59

2.0.0-p481 :002 > "" # empty string
 => ""
2.0.0-p481 :003 > "foo"
 => "foo"
2.0.0-p481 :004 > "foo" + "bar"
 => "foobar"
2.0.0-p481 :005 > first_name = "Michael"
 => "Michael"
2.0.0-p481 :010 > " #{first_name} " # String interpolation
 => " Michael "
2.0.0-p481 :011 >

2.0.0-p481 :013 > print "hello"
hello => nil
2.0.0-p481 :014 > puts "hello"
hello
 => nil

2.0.0-p481 :017 > foo = 'bar'
 => "bar"
2.0.0-p481 :018 > foo
 => "bar"
2.0.0-p481 :019 > '#{foo}'
 => "\#{foo}"

2.0.0-p481 :020 > "\n"
 => "\n"
2.0.0-p481 :021 > '\n'
 => "\\n"

irb(main):001:0> "foobar".length
"foobar".length
=> 6
irb(main):002:0> "foobar".empty?
"foobar".empty?
=> false
irb(main):003:0> s = "foobar"
s = "foobar"
=> "foobar"irb(main):001:0> "foobar".length
"foobar".length
=> 6
irb(main):002:0> "foobar".empty?
"foobar".empty?
=> false
irb(main):003:0> s = "foobar"
s = "foobar"
=> "foobar"

irb(main):001:0> "foo".nil?
"foo".nil?
=> false
irb(main):002:0> "".nil?
"".nil?
=> false
irb(main):004:0> nil.nil?
=> true

irb(main):002:0> puts "zero is true" if 0
puts "zero is true" if 0
zero is true

module ApplicationHelper
  # Returns the full title on a per-page basis
  def full_title(page_title)
    base_title = "Ruby on Rails Tutorial Sample App"
    if page_title.empty?
      base_title
    else
      "#{base_title} | #{page_title}"
    end
  end
end

irb(main):003:0> "foo bar     baz".split
"foo bar     baz".split
=> ["foo", "bar", "baz"]
irb(main):004:0> "fooxbarxbaz".split
"fooxbarxbaz".split
=> ["fooxbarxbaz"]
irb(main):005:0> "fooxbarxbaz".split('x')
"fooxbarxbaz".split('x')
=> ["foo", "bar", "baz"]

irb(main):006:0> (0..9).to_a
(0..9).to_a
=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

irb(main):007:0> a = %w[foo bar baz quux]
a = %w[foo bar baz quux]
=> ["foo", "bar", "baz", "quux"]
irb(main):008:0> a[0..2]
a[0..2]
=> ["foo", "bar", "baz"]

irb(main):009:0> ('a'..'z').to_a
('a'..'z').to_a
=> ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]
irb(main):010:0> ('a'..'z').to_a.shuffle
('a'..'z').to_a.shuffle
=> ["k", "q", "d", "g", "r", "v", "x", "y", "u", "n", "f", "s", "c", "l", "w", "b", "a", "e", "m", "t", "p", "h", "j", "z", "i", "o"]
irb(main):011:0> ('a'..'z').to_a.shuffle[0..7]
('a'..'z').to_a.shuffle[0..7]
=> ["n", "q", "h", "d", "j", "z", "t", "v"]
irb(main):012:0> ('a'..'z').to_a.shuffle[0..7].join  # final solution
('a'..'z').to_a.shuffle[0..7].join
=> "qfdlgxek"

irb(main):013:0> user = {}
user = {}
=> {}
irb(main):014:0> user["first_name"] = "Michael"
user["first_name"] = "Michael"
=> "Michael"
irb(main):016:0> user["last_name"]="Hartl"
user["last_name"]="Hartl"
=> "Hartl"
irb(main):017:0> user["first_name"]
user["first_name"]
=> "Michael"
irb(main):018:0> user
user
=> {"first_name"=>"Michael", "last_name"=>"Hartl"}

irb(main):002:0> h1 = {:name=>"Michael Hartl", :email=>"michael@example.com"}
h1 = {:name=>"Michael Hartl", :email=>"michael@example.com"}
=> {:name=>"Michael Hartl", :email=>"michael@example.com"}

irb(main):001:0> h1 = {name: "Michael Hartl", email: "michael@example.com"}
h1 = {name: "Michael Hartl", email: "michael@example.com"}
=> {:name=>"Michael Hartl", :email=>"michael@example.com"}

irb(main):004:0> flash.each {|key, value| puts "key is #{key}, value is #{value}"}
flash.each {|key, value| puts "key is #{key}, value is #{value}"}
key is success, value is It worked!
key is error, value is It failed.
=> {:success=>"It worked!", :error=>"It failed."}

<%= stylesheet_link_tag "application", media: "all",
                                       "data-turbolinks-track" => true %>

# Parentheses on function calls are optional.
stylesheet_link_tag("application", media: "all",
                                   "data-turbolinks-track" => true)
stylesheet_link_tag "application", media: "all",
                                   "data-turbolinks-track" => true

# Curly braces on final hash arguments are optional.
stylesheet_link_tag "application", { media: "all",
                                     "data-turbolinks-track" => true }
stylesheet_link_tag "application", media: "all",
                                   "data-turbolinks-track" => true

"data-turbolinks-track" => true

irb(main):005:0> s = "foobar"
s = "foobar"
=> "foobar"
irb(main):006:0> s.class
s.class
=> String
irb(main):007:0> s1 = String.new("foobar")
s1 = String.new("foobar")
=> "foobar"
irb(main):008:0> s1.class
s1.class
=> String
irb(main):009:0> s1 == "foobar"
s1 == "foobar"
=> true

irb(main):010:0> s = String.new("foobar")
s = String.new("foobar")
=> "foobar"
irb(main):011:0> s.class
s.class
=> String
irb(main):012:0> s.class.superclass
s.class.superclass
=> Object
irb(main):013:0> s.class.superclass.superclass
s.class.superclass.superclass
=> BasicObject
irb(main):014:0> s.class.superclass.superclass.superclass
s.class.superclass.superclass.superclass
=> nil

class Word
  def palindrome?(string)
    string == string.reverse
  end
end

w = Word.new
p w.palindrome?("foobar")
p w.palindrome?("level")

##################################################
# <===================OUTPUT===================> #
# false                                          #
# true                                           #
##################################################

class Word < String
  def palindrome?
    self == self.reverse
  end
end

s = Word.new("level")
p s.palindrome?
p s.length

##################################################
# <===================OUTPUT===================> #
# true                                           #
# 5                                              #
##################################################

irb(main):014:0> "level".palindrome?
"level".palindrome?
NoMethodError: undefined method `palindrome?' for "level":String

class String
  def palindrome?
    self == self.reverse
  end
end

"level".palindrome?

##################################################
# <===================OUTPUT===================> #
# true                                           #
##################################################

i309511@[git-svn-ct] > rails c
/Users/i309511/Code/git-svn-ct/lib/content_admin_mixin.rb:93: warning: already initialized constant CONTENT_SEARCH_AUTOCOMPLETE_CLASS_NAMES
Loading development environment (Rails 3.0.20)
irb(main):001:0> "".empty?
=> true
irb(main):002:0> "   ".empty?
=> false
irb(main):003:0> "".blank?
=> true
irb(main):004:0> "   ".blank?
=> true
irb(main):005:0> nil.blank?
=> true

i309511@[sample_app] > rails c
Loading development environment (Rails 4.0.8)
irb(main):001:0> controller = StaticPagesController.new
=> #<StaticPagesController:0x007ff9dce29bf8 @_routes=nil, @_action_has_layout=true, @_headers={"Content-Type"=>"text/html"}, @_status=200, @_request=nil, @_response=nil>
irb(main):002:0> controller.class
=> StaticPagesController
irb(main):003:0> controller.class.superclass
=> ApplicationController
irb(main):004:0> controller.class.superclass.superclass
=> ActionController::Base
irb(main):005:0> controller.class.superclass.superclass.superclass
=> ActionController::Metal
irb(main):006:0> controller.class.superclass.superclass.superclass.superclass
=> AbstractController::Base
irb(main):007:0> controller.class.superclass.superclass.superclass.superclass.superclass
=> Object

irb(main):008:0> controller.home
=> nil

class User
  attr_accessor :name, :email

  def initialize(attributes = {})
    @name = attributes[:name]
    @email = attributes[:email]
  end

  def formatted_email
    "#{@name} <#{@email}>"
  end
end