Ruby On Rails Overview
- 1. Ruby on Rails Overview Jon Kinney Avastone Technologies
- 2. What is it?
- 3. Ruby the Programming Language Rails the Web Framework
- 4. Language Framework Ruby Rails C# WebForms C# ASP.NET MVC PHP Zend Java Struts Java Spring MVC
- 5. What’s the big deal?
- 9. Learn from other frameworks and languages Be a better
- 10. What is Ruby?
- 11. Object Oriented Java Ruby Python VB.NET C++ C#
- 12. Dynamically Typed Not compiled Code is executed at run time
- 14. The .each Method
- 16. Defining methods Everything in ruby is true except nil and false Ruby automatically returns the last statement in a method
- 18. “if” at the end “else” at the end
- 19. Garbage Object Collection Oriented Good Public and IDE’s Private Methods Similar to C#
- 20. No curly No braces or Compile- semicolon time s checking Dynamic Interpreted Typing Different from C#
- 21. What is Rails?
- 22. Ruby on Rails is an open-source web framework that's optimized for programmer happiness and sustainable productivity. It lets you write beautiful code by favoring convention over configuration
- 24. Model req ues t Controller res po n se View
- 25. All in one! ASP.NET Ruby on Rails MVC Presentation ASP.NET Rails MVC Database migrations T-SQL Rails Data access & LINQ to Rails persistence Entities Unit testing NUnit Rails Testing web pages (?) Rails Testing cookies and (?) Rails session state
- 26. Opinionated Software Not Academic Convention over Configuration
- 27. Conventions • Singular camel cased model/class names • Plural lower case and underscored • Db table names • Variable names • Method names • Primary key called “id” • Db fields called created_at and updated_at • Get free timestamps when performing
- 28. D.R.Y. Don’t Repeat Yourself Each piece of knowledge should have one and only one place to live
- 29. An object that wraps a row in a database table or view, encapsulates the database access, and adds domain logic on that data. ~ Martin Fowler Active Record
- 30. Running Rails
- 31. Runs on ….
- 32. Store stuff in … And others …
- 33. Write code with ….
- 34. Walkthrough Creating a Rails Project in 3 Steps
- 35. Step 1
- 36. They ALL look like
- 37. Step 2 (optional) # SQLite version 3.x # gem install sqlite3-ruby (not necessary on OS X Leopard) development: adapter: sqlite3 database: db/development.sqlite3 pool: 5 timeout: 5000 # Warning: The database defined as "test" will be erased and # re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test: adapter: sqlite3 database: db/test.sqlite3 pool: 5 timeout: 5000 production: adapter: sqlite3 database: db/production.sqlite3 pool: 5 timeout: 5000
- 38. Step 3 – Boot Mongrel Or use the Passenger Preference Pane for Apache2
- 39. Tada!!
- 40. DEMO Cookbook
Editor's Notes
- #7: http://www.flickr.com/photos/foreversouls/2357763471/sizes/l/
- #19: def is_friday? today = Date.today friday = today.end_of_week - 2.days today == friday end today = Date.today puts "I'm in a good mood” if today.is_friday? puts "I'm in a bad mood" unless today.is_friday? today.is_friday? ? "great mood" : "bad mood"
- #20: Public and private methods don’t “really” exist… you can use send to call them. Private and protected are really just ideas… I intend for you not to call this because I may change this and you should not rely on it
- #27: Rails isn’t academic software. Every feature is extracted from a plugin or a working project from 37signals
- #29: http://www.flickr.com/photos/dotdoubledot/1979443914/sizes/l/
- #30: http://www.flickr.com/photos/redjar/113152393/