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1 CHAPTER 1 Rails

2 CHAPTER 1 Rails 1-1 Rails Ruby on Rails Web 1 Web Rails Web Ruby on Rails Rails Rails Web Rails 37signals David Heinemeier Hansson DHH DHH Rails Rails Rails R for Ruby, a play on Struts, and I liked the sound of it ;). Ruby R Struts Java Rails Web Web Web Web Web Web 2

org/rails/pages/faq Rails Rails R for Ruby, a play on Struts, and I liked the sound of it ;).

3 1-1 Rails Web Blog SNS CMSWeb Web Ruby Perl Java Python PHP Web Web PHP XOOPS Python Plone Zope Web Perl Web Sledge Catalyst EggWeb StrutsTapestry JSF ASP.NET TurboGear Web CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 3

4 CHAPTER 1 Rails Web Web Web Model View Controller MVC MVC 1Rails RailsRails 4

5 1-1 Rails COLUMN CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 5

6 CHAPTER 1 Rails 1-2 Rails 2 Web Rails Don't Repeat Yourself DRY Convention over Configuration CoC Rails Ruby NARF Rweb Nora RailsRails Rails Web 6

7 1-2 Rails Don't Repeat Yourself DRY Don't Repeat Yourself DRY Rails1 DRY CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 7

8 CHAPTER 1 Rails Convention over Configuration CoC Convention over Configuration CoC XML Rails Web 8

9 1-3 Rails Rails DRY CoC Rails DHH RailsXML Ruby Ruby DRY CoC Rails TDD Rails DRY CoC CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 9

10 CHAPTER 1 Rails Rails Rails Rails Rails Rails ActiveRecord ActionView ActionController Web ActionWebServiceActionMailer ActiveSupportRails Web Rails Ajaxprototype script.aculo.us JavaScript 10

11 1-3 Rails Rails Rails development test production 3development test production Rails rake migrate aboutrails CapistranoSwitchTower Rails Ruby gems CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 11

CapistranoSwitchTower Rails Ruby gems http://www.rubygems.

12 CHAPTER 1 Rails gems Rails Rails Ruby Ruby Java UNIX ant make Rails rake rake Rakefile Ruby 12

13 1-4 Rails Rails Rails Rails Rails Rails Rails Web RailsWeb Rails Rails CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 13

14 CHAPTER 1 Rails Rails MySQL Rails Rails DRY CoC 2 After Rails Python Turbo Gear Java Trails PHP Symfony After Rails 14

15 1-5 Rails Rails Rails MVC Web Rails Web Rails ActionController ActionView ActiveRecordMVC Web URL ActionController ActiveRecord ActionView Web Rails MVC Web CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 15

ActionController ActiveRecord ActionView Web Rails MVC Web

16 CHAPTER 1 Rails Web URL Web /todos/list todos list Web list.rhtml Rails URL 16

17 1-5 Rails COLUMN CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 17

18 CHAPTER 1 Rails 1-6 Rails Rails Web Rails Web Rails Rails Ruby Rails Instant Rails Instant Rails C: InstantRails 18

19 1-6 Rails Instant Rails Instant Rails To Do Instant Rails I Instant Rails Instant Rails Instant Rails Manager CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 19

20 CHAPTER 1 Rails Instant Rails Manager I I Rails Applications Manage Rails Applications 20

21 1-6 Rails Create New Rails App... Instant Rails Rails MySQL Inatant Rails Rails rails cd rails_apps C: InstantRails>cd rails_apps C: InstantRails rails_apps> CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 21

22 CHAPTER 1 Rails rails_apps mysqltodo_app rails C: InstantRails rails_apps>rails -d mysql todo_app C: InstantRails rails_apps>rails -d mysql todo_app create create app/controllers create app/helpers create app/models create app/views/layouts create log/development.log create log/test.log C: InstantRails rails_apps> railstodo_app Web todo_app RefreshList 22

23 1-6 Rails Start with Mongrel Mongrel Web Mongrel Ruby Web Rails CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 23

24 CHAPTER 1 Rails Web Web URL Rails Start with Mongrel CTRL C Ctrl C Instant Rails Manager I Open Ruby Console Window 24

25 1-6 Rails Windows Explorer Rails CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 25

26 CHAPTER 1 Rails Rails Convention over Configuration CoC Rails development test production 3 development config database.yml development: adapter: mysql database: todo_app_development username: root 26

27 1-6 Rails password: host: localhost development: databese: "_develoment" Rails Instant Rails username: root password: MySQL username: password: Open Ruby Console WindowMySQL cd todo_app C: InstantRails rails_apps>cd todo_app C: InstantRails rails_apps todo_app> MySQLmysql root C: InstantRails rails_apps todo_app>mysql -u root -p CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 27

28 CHAPTER 1 Rails C: InstantRails rails_apps todo_app>mysql -u root -p C: InstantRails rails_apps todo_app>mysql -u root Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 6 to server version: community Type 'help;' or ' h' for help. Type ' c' to clear the buffer. mysql> create databasesql mysql> create database todo_app_development; mysql> create database todo_app_development; Query OK, 1 row affected (0.00 sec) mysql quit mysql mysql> quit mysql> quit Bye C: InstantRails rails_apps todo_app> 28

29 1-6 Rails todo_app_development Rails script generate Rails generate model Todo C: InstantRails rails_apps todo_app>ruby script/generate model Todo C: InstantRails rails_apps todo_app>ruby script/generate model Todo exists app/models/ exists test/unit/ exists test/fixtures/ create app/models/todo.rb create test/unit/todo_test.rb create test/fixtures/todos.yml create db/migrate create db/migrate/001_create_todos.rb C: InstantRails rails_apps todo_app models todo.rb C: InstantRails rails_apps todo_app db migrate 001_create_todos.rb CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 29

30 CHAPTER 1 Rails class Todo < ActiveRecord::Base end Todo001_create_todos.rb class CreateTodos < ActiveRecord::Migration def self.up create_table :todos do t end end def self.down drop_table :todos end end create_table :todos do t todosto Do 001_create_todos.rb 001_create_todos.rb class CreateTodos < ActiveRecord::Migration def self.up create_table :todos do t t.column :item, :string t.column :name, :string t.column :memo, :text t.column :created_at, :timestamp end end def self.down drop_table :todos end end 30

31 1-6 Rails todos item name memo created_at rake db:migrate C: InstantRails rails_apps todo_app>rake db:migrate database.yml 001_create_todos.rb rake C: InstantRails rails_apps todo_app>rake db:migrate (in C:/InstantRails/rails_apps/todo_app) == CreateTodos: migrating ===================================================== -- create_table(:todos) -> s == CreateTodos: migrated (0.4530s) ============================================ C: InstantRails rails_apps todo_app> todo_app_development todos MySQL mysql mysql C: InstantRails rails_apps todo_app>mysql -u root C: InstantRails rails_apps todo_app>mysql -u root Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 6 to server version: community CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 31

32 CHAPTER 1 Rails Type 'help;' or ' h' for help. Type ' c' to clear the buffer. mysql> use mysql> use todo_app_development; Database changed mysql> use todo_app_development; Database changed show MySQL mysql> show fields from todos; mysql> show fields from todos; Field Type Null Key Default Extra id int(11) NO PRI NULL auto_increment item varchar(255) YES NULL name varchar(255) YES NULL memo text YES NULL created_at datetime YES NULL rows in set (0.02 sec) 001_create_todos.rb id 001_create_todos.rb idrails 32

33 1-6 Rails id Todotodos Create Read Retrieve Update Delete Destroy CRUD generate scaffold scaffold CRUD Todo C: InstantRails rails_apps todo_app>ruby script/generate scaffold Todo app models views controllers todos C: InstantRails rails_apps todo_app>ruby script/generate scaffold Todo exists app/controllers/ exists app/helpers/ create app/views/todos exists app/views/layouts/ exists test/functional/ dependency model exists app/models/ exists test/unit/ exists test/fixtures/ identical app/models/todo.rb identical test/unit/todo_test.rb identical test/fixtures/todos.yml CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 33

34 CHAPTER 1 Rails create app/views/todos/_form.rhtml create app/views/todos/list.rhtml create app/views/todos/show.rhtml create app/views/todos/new.rhtml create app/views/todos/edit.rhtml create app/controllers/todos_controller.rb create test/functional/todos_controller_test.rb create app/helpers/todos_helper.rb create app/views/layouts/todos.rhtml create public/stylesheets/scaffold.css C: InstantRails rails_apps todo_app> CRUD Web Mongrel Web todo_app Start with Mongrel Web WebWeb URL To Do 34

35 1-6 Rails To Do New todohttp:// localhost:3000/todos/new To Do Created at Create To Do CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 35

36 CHAPTER 1 Rails 1To Do To Do To Do Show 1 Edit To Do 36

37 1-6 Rails Rails CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 37

38 CHAPTER 1 Rails 1-7 Rails ActiveRecord ActionController HTML ActionView Ajax 1 Rails Web COLUMN 2 MVC M RailsActiveRecord O/R 38

39 1-7 ActiveRecord migrate SQL 2 COLUMN 3 MVC C Rails URL 3 HTTP 4 MVC V Web CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 39

40 CHAPTER 1 Rails Web HTML Rails Web Web HTML 1ERB ERB RailsRuby Rails ERB Rails AjaxRails Ajax 5 6 7Rails 5 1 WebRails LoginEngine 6 7 GoogleWeb AjaxScaffoldmephisto ReviewableMind Rails 1 40

41 1-7 Rails Rails CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 APPENDIX 41

42 CHAPTER 1 Rails COLUMN 42

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ii iii iv v vi 4 get "lesson/:action(/:name)" => "lesson" 5 6 resources :members 7 end Sato mac:rails taro$ cd asagao mac:asagao taro$ bin/rails s mac:asagao