Ruby on Rails Overview
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This presentation stands for overview to describe Ruby on Rails.
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Ruby on Rails Overview
- 1. Ruby on Rails Overview Koki Shimizu (u2daijibrother@gmail.com) 13年4月18日木曜日
- 2. What is Rails? Rails is a web application development framework written in the Ruby. 13年4月18日木曜日
- 3. The Rails philosophy includes several guiding principles •DRY (Don’t Repeat Yourself) •CoC (Convention over Configuration) •REST(REpresentational State Transfer) Railsはソフトウェア開発上重要な、いくつかの設計実装 手法、考え方を元に作成されている。 13年4月18日木曜日
- 4. DRY Every piece of knowledge must have a single, unambiguous, authoritative representation within a system. すべての知識はシステム内において、単一、かつ明確な、そして 信頼できる表現になっていなければならない。 13年4月18日木曜日
- 5. DRY • Documents and Code • Code Comments • State • Class/Utlity 13年4月18日木曜日
- 6. CoC Design paradigm to decrease the number of decisions that developers need to make, gaining simplicity, but not necessarily losing flexibility. 設定より規約。規約に従った実装を行い、開発者に決 定させるべきことを少なくし、単純さを維持する。 13年4月18日木曜日
- 7. CoC • Mapping File ( Class to DB Table ) • Class Name/ Method Name • Folder Structure/ Namespace Design • Template Method/ Class Design 13年4月18日木曜日
- 8. REST REST is an architectural style and the best pattern for web application. RESTは、アーキテクチャスタイルの一つであり、良 いWEBアプリケーションのためのパターンである。 13年4月18日木曜日
- 9. REST Resource Resource Each request includes all of the information. HTTP The set of operations supported by the web service using HTTP methods as known well-defined- interface (e.g., GET, PUT, POST, or DELETE). Uniform Interface Stateless HTML,XML or JSON etc HTML,XML or JSON etc Response is cacheable to improving scalability and performance. Cacheable KEY GOALS of REST include: •Scalability of component interactions •Generality of interfaces •Independent deployment of components •Intermediary components to reduce latency, enforce security and encapsulate legacy systems 13年4月18日木曜日
- 10. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance 13年4月18日木曜日
- 11. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance Controller View Model Storage 13年4月18日木曜日
- 12. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance ① Controller View Model Storage Request to controller from user interface 13年4月18日木曜日
- 13. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance ① ② Controller View Model Storage Request to controller from user interface Controller calls Model and gets results 13年4月18日木曜日
- 14. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance ① ②③ Controller View Model Storage Request to controller from user interface Controller calls Model and gets results Controller puts View the results 13年4月18日木曜日
- 15. MVC Model-View-Controller • Isolation of business Logic from the user interface • Ease of keeping code DRY • Making it clear where different types of code belong for easier maintenance ① ②③④ Controller View Model Storage Request to controller from user interface Controller calls Model and gets results Controller puts View the results View is rendered user interface 13年4月18日木曜日
- 17. MVC on Rails Controller View Model DB 13年4月18日木曜日
- 18. MVC on Rails Controller View Model DB Router 13年4月18日木曜日
- 19. MVC on Rails ① Controller View Model DB Router Browser posts request to Router 13年4月18日木曜日
- 20. MVC on Rails ① Controller View Model DB Router discovers controller to execute and Rails executes the controller Router ② Browser posts request to Router 13年4月18日木曜日
- 21. MVC on Rails ① ③ Controller View Model DB Router discovers controller to execute and Rails executes the controller Controller calls Model and gets results Router ② Browser posts request to Router 13年4月18日木曜日
- 22. MVC on Rails ① ③④ Controller View Model DB Router discovers controller to execute and Rails executes the controller Controller calls Model and gets results Controller puts View the results Router ② Browser posts request to Router 13年4月18日木曜日
- 23. MVC on Rails ① ③④⑤ Controller View Model DB Router discovers controller to execute and Rails executes the controller Controller calls Model and gets results Controller puts View the results View is rendered user interface Router ② Browser posts request to Router 13年4月18日木曜日
- 24. Model13年4月18日木曜日
- 27. Development Flow on Rails ControllerView Model Scaffold Migration One Iteration 13年4月18日木曜日