Rails3 ΏrModel
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The document appears to be notes from a Ruby on Rails modeling workshop. It includes instructions for generating models for a Wiki application, with User, Page, Comment, and History models. It also includes model validations, tests, associations and notes on Active Record features like migrations, validations, callbacks, associations, and querying.
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db/migrate/20110712154821_create_pages.rb
rake db:migrate [VERSION=YY..]
rake db:rollback [STEP=N]
rake db:migrate:redo [STEP=N]
page
2011 7 13](https://image.slidesharecdn.com/rails3dojo-model-110713045504-phpapp02/85/Rails3-Model-35-320.jpg)
Rails3 ΏrModel
- 1. Model Hamamatsurb#5 2011.07.13 @mackato 2011 7 13
- 2. 2011 7 13
- 3. Wiki 5 2011 7 13
- 4. 2011 7 13
- 5. 2011 7 13
- 6. 2011 7 13
- 7. 2011 7 13
- 8. Model - Ruby on Rails Guides Rails Database Migrations: http://bit.ly/rrH5zQ Active Record Validations and Callbacks: http://bit.ly/qp5vkm Active Record Associations: http://bit.ly/n3exu9 Active Record Query Interface: http://bit.ly/qaeazJ 2011 7 13
- 9. Version 1.9.2 Version 3.0.7 .rvmrc rvm ruby-1.9.2-p180@rails-3_0_7 2011 7 13
- 10. GitHub git clone git://github.com/hamamatsu-rb/rails3dojo.git git checkout -b working 2-model_pre 2011 7 13
- 11. FactoryGirl( ) Spork( ) Gem?le .rspec Spork spork --bootstrap 2011 7 13
- 12. Wiki User: Wiki Page: Wiki Comment: Page History: Page 2011 7 13
- 13. Wiki rails g model user name:string rake db:migrate 2011 7 13
- 14. spec/factories.rb spec/spec_helper.rb 2011 7 13
- 15. spec/models/user_spec.rb 2011 7 13
- 16. app/models/user.rb SexyValidation! Legacy Style Validation 2011 7 13
- 17. bundle exec rspec spec/models/user_spec.rb User #name 50 #find_or_create_by_name 2011 7 13
- 18. Wiki rails g model page title:string body:text user_id:integer rake db:migrate 2011 7 13
- 19. spec/factories.rb spec/spec_helper.rb 2011 7 13
- 20. spec/models/page_spec.rb( ) 2011 7 13
- 21. app/models/page.rb 2011 7 13
- 22. Page rails g model comment body:text page_id:integer user_id:integer rake db:migrate 2011 7 13
- 23. spec/factories.rb spec/spec_helper.rb 2011 7 13
- 24. spec/models/comment_spec.rb( ) 2011 7 13
- 25. app/models/comment.rb 2011 7 13
- 26. spec/models/page_spec.rb ( ) app/models/page.rb 2011 7 13
- 27. Page rails g model history page_id:integer user_id:integer rake db:migrate 2011 7 13
- 28. spec/factories.rb spec/spec_helper.rb 2011 7 13
- 29. spec/models/history_spec.rb 2011 7 13
- 30. app/models/history.rb 2011 7 13
- 31. spec/models/page_spec.rb ( ) app/models/page.rb 2011 7 13
- 32. spec/models/page_spec.rb ( ) app/models/page.rb 2011 7 13
- 33. master git checkout master git merge working git branch -d working GitHub git clone git://github.com/hamamatsu-rb/rails3dojo.git git checkout 2-model 2011 7 13
- 34. 2011 7 13
- 35. page db/migrate/20110712154821_create_pages.rb rake db:migrate [VERSION=YY..] rake db:rollback [STEP=N] rake db:migrate:redo [STEP=N] page 2011 7 13
- 36. Validation Helpers vs SexyValidation 2011 7 13
- 37. The belongs_to Association The has_many :through Association class ?Order ?< ?ActiveRecord::Base ? ?belongs_to ?:customer class ?Physician ?< ?ActiveRecord::Base end ? ?has_many ?:appointments ? ?has_many ?:patients, ?:through ?=> ?:appointments end The has_one Association ? class ?Appointment ?< ?ActiveRecord::Base class ?Supplier ?< ?ActiveRecord::Base ? ?belongs_to ?:physician ? ?has_one ?:account ? ?belongs_to ?:patient end end ? class ?Patient ?< ?ActiveRecord::Base ? ?has_many ?:appointments The has_many Association ? ?has_many ?:physicians, ?:through ?=> ?:appointments end class ?Customer ?< ?ActiveRecord::Base ? ?has_many ?:orders end : Active Record Associations: http://bit.ly/n3exu9 2011 7 13
- 38. Finder methods Retrieving a Single Object ? where ? select ? group ? order Retrieving Multiple Objects ? limit ? offset ? joins ? includes ? lock Calculations ? readonly ? from ? having Active Record Query Interface: http://bit.ly/qaeazJ 2011 7 13
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