6.1 Iteration A1: Creating the Products Maintenance Application Table of Contents
We start with a simple "hello world!" demo application and in the process verify that everything is installed correctly.
Create the application
bundle exec /home/rubys/git/rails/railties/bin/rails new demo1 --skip-bundle --dev
create
create README
create Rakefile
create config.ru
create .gitignore
create Gemfile
create app
create app/assets/images/rails.png
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/mailers
create app/models
create app/views/layouts/application.html.erb
create app/mailers/.gitkeep
create app/models/.gitkeep
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/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 doc
create doc/README_FOR_APP
create lib
create lib/tasks
create lib/tasks/.gitkeep
create lib/assets
create lib/assets/.gitkeep
create log
create log/.gitkeep
create public
create public/404.html
create public/422.html
create public/500.html
create public/favicon.ico
create public/index.html
create public/robots.txt
create script
create script/rails
create test/fixtures
create test/fixtures/.gitkeep
create test/functional
create test/functional/.gitkeep
create test/integration
create test/integration/.gitkeep
create test/unit
create test/unit/.gitkeep
create test/performance/browsing_test.rb
create test/test_helper.rb
create tmp/cache
create tmp/cache/assets
create vendor/assets/javascripts
create vendor/assets/javascripts/.gitkeep
create vendor/assets/stylesheets
create vendor/assets/stylesheets/.gitkeep
create vendor/plugins
create vendor/plugins/.gitkeep
bundle install
Using rake (0.9.2.2)
Using i18n (0.6.0)
Using multi_json (1.0.3)
Using activesupport (3.2.0.beta)
Using builder (3.0.0)
Using activemodel (3.2.0.beta)
Using erubis (2.7.0)
Using journey (1.0.0.20111022124133)
Using rack (1.3.5)
Using rack-cache (1.1)
Using rack-test (0.6.1)
Using hike (1.2.1)
Using tilt (1.3.3)
Using sprockets (2.0.3)
Using actionpack (3.2.0.beta)
Using mime-types (1.17.2)
Using polyglot (0.3.2)
Using treetop (1.4.10)
Using mail (2.3.0)
Using actionmailer (3.2.0.beta)
Using active_utils (1.0.1)
Using braintree (2.12.0)
Using json (1.6.1)
Using money (3.7.1)
Using activemerchant (1.18.1)
Using arel (2.2.1)
Using tzinfo (0.3.30)
Using activerecord (3.2.0.beta)
Using activeresource (3.2.0.beta)
Using bcrypt-ruby (3.0.1)
Using bundler (1.0.21)
Using highline (1.6.2)
Using net-ssh (2.2.1)
Using net-scp (1.0.4)
Using net-sftp (2.0.5)
Using net-ssh-gateway (1.1.0)
Using capistrano (2.9.0)
Using coffee-script-source (1.1.2)
Using execjs (1.2.9)
Using coffee-script (2.2.0)
Using rack-ssl (1.3.2)
Using rdoc (3.11)
Using thor (0.14.6)
Using railties (3.2.0.beta)
Using coffee-rails (3.2.0.beta)
Using haml (3.1.3)
Using htmlentities (4.3.0)
Using jquery-rails (1.0.16)
Using mysql2 (0.3.7)
Using rails (3.2.0.beta)
Using sass (3.1.10)
Using sass-rails (3.1.1.alpha.0)
Using sqlite3 (1.3.4)
Using test-unit (2.4.0)
Using uglifier (1.0.4)
Using will_paginate (3.0.2)
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
See what files were created
ls -p
app/ config.ru doc/ lib/ public/ README test/ vendor/
config/ db/ Gemfile log/ Rakefile script/ tmp/
Create a simple controller
rails generate controller Say hello goodbye
create app/controllers/say_controller.rb
route get "say/goodbye"
route get "say/hello"
invoke erb
create app/views/say
create app/views/say/hello.html.erb
create app/views/say/goodbye.html.erb
invoke test_unit
create test/functional/say_controller_test.rb
invoke helper
create app/helpers/say_helper.rb
invoke test_unit
create test/unit/helpers/say_helper_test.rb
invoke assets
invoke coffee
create app/assets/javascripts/say.js.coffee
invoke scss
create app/assets/stylesheets/say.css.scss
edit app/controllers/say_controller.rb
class SayController < ApplicationController
def hello
end
def goodbye
end
end
Attempt to fetch the file - note that it is missing
get /say/hello
Find me in app/views/say/hello.html.erb
Replace file with a simple hello world
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
This time it works!
get /say/hello
Add a simple expression
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= Time.now %>
</p>
get /say/hello
It is now 2011-10-29 03:10:59 -0400
Evaluate the expression in the controller.
edit app/controllers/say_controller.rb
class SayController < ApplicationController
def hello
@time = Time.now
end
def goodbye
end
end
Reference the result in the view.
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= @time %>
</p>
get /say/hello
It is now 2011-10-29 03:10:59 -0400
Replace the goodbye template
edit app/views/say/goodbye.html.erb
<h1>Goodbye!</h1>
<p>
It was nice having you here.
</p>
get /say/goodbye
It was nice having you here.
Add a link from the hello page to the goodbye page
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= @time %>
</p>
<p>
Time to say
<%= link_to "Goodbye", say_goodbye_path %>!
</p>
get /say/hello
Add a link back to the hello page
edit app/views/say/goodbye.html.erb
<h1>Goodbye!</h1>
<p>
It was nice having you here.
</p>
<p>
Say <%= link_to "Hello", say_hello_path %> again.
</p>
get /say/goodbye
6.1 Iteration A1: Creating the Products Maintenance Application Table of Contents