Your SlideShare is downloading. ×
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Ruby on Rails Pei-Ying Wang
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Ruby on Rails Pei-Ying Wang


Published on

  • Be the first to comment

  • Be the first to like this

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

No notes for slide


  • 1. Ruby on Rails Pei-Ying Wang
    • Overview
      • What is Ruby on Rails?
      • Rails frameworks (components)
      • Example: simple web application
      • Pros and Cons
  • 2. What is Ruby on Rails?
    • Ruby  Ruby on Rails
      • An open source, interpreted scripting language
      • Created by Yukihiro Matsumoto in the mid-1990s
    • Ruby on Rails, ROR or Rails
      • An full-stack, open source web application framework written in Ruby
      • Designed for writing database-oriented real-world Web application quickly and easily
      • Created by David Heinemeier Hansson
  • 3. What is Ruby on Rails?(2)
    • Very short history
      • Extracted from Basecamp(a project-management tool by 37Signals)
      • First released : July 2004
      • Latest release: April 2006(Version 1.1.2)
    • Principles(DRY- D on’t R epeat Y ourself)
      • Less software
      • Convention over Configuration
  • 4. Rails Frameworks(components)
  • 5. Example: a simple web application After starting MySQL and Web server, Create a new web application called cookbook2: > Rails cookbook2
  • 6. Example: a simple web application(2) class MyTestController < ApplicationController end > ruby scriptgenerate controller MyTest To make a simple Hello World application:
  • 7. Example: a simple web application(3) To make a simple Hello World application(2): class MyTestController < ApplicationController def index render_text &quot;Hello World&quot; end end http:// localhost :3000/My_Test/index http://localhost:3000//My_Test http://localhost:3000/MyTest
  • 8. Example: a simple web application(4)
    • Online Recipe
      • First, create an database called cookbook2 and a table called recipes
  • 9. Example: a simple web application(5) > ruby scriptgenerate model Recipe
  • 10. Example: a simple web application(6) > ruby scriptgenerate controller Recipe Magic happens by simply adding this line to recipe_controller.rb !  Open browser and go to http:// localhost :3000/recipe/new
  • 11. Example: a simple web application(7) Now, you can start to populate the database http://localhost:3000/recipe/new http://localhost:3000/recipe/new Click on the “create” button to add data
  • 12. Example: a simple web application(8) http://localhost:3000/recipe/list http://localhost:3000/recipe/show/1
  • 13. Example: a simple web application(9)
    • Add a list method in the file “recipe_controller.rb”
    • Take over the handling of the list action from the scaffolding
  • 14. Example: a simple web application(10)
    • Add a new file called “ list.rhtml ” under app/views/receipe
    • .rhtml : an html file with Ruby code embedded within
    • <% %> and
    • <%= %> tags
    Step2: <html> <head> <title>All Recipes</title> </head> <body> <h1>Online Cookbook - All Recipes</h1> <table border=&quot;1&quot;> <tr> <td width=&quot;80%&quot;><p align=&quot;center&quot;><i><b>Recipe</b></i></td> <td width=&quot;20%&quot;><p align=&quot;center&quot;><i><b>Date</b></i></td> </tr> <% @recipes.each do |recipe| %> <tr> <td> <%= link_to recipe.title, :action => &quot;show&quot;, :id => %> </td> <td> <%= %> </td> </tr> <% end %> </table> <p> <%= link_to &quot;Create new recipe&quot;, :action => &quot;new&quot; %> </p> </body> </html>
  • 15. Example: a simple web application(11)
    • Ask the recipe class for a collection of all recipes from the DB and assign the collection to the instance variable @recipes
  • 16. Example: a simple web application(12) http://localhost:3000/recipe/list Done!
  • 17. Pros and Cons
    • pros
      • Less code
      • High productivity & reduced development time
    • cons
      • too young
      • Upgrades in foundational code may result in instability in Rails
        • Relies on a foundation of numerous other applications
  • 18. Reference
    • Russel Kay: QUICK STUDY: Ruby on Rails. Computerworld, 11/28/2005, Vol. 39 Issue 48, pg26-26
    • David Geer: Will Software Developers Rid Ruby on Rails to Success? Computer, Feb2006, Vol. 39 Issue 2, pg18-20
    • Stacy Cowley : Riding the ruby rails in a new direction  CRN. Jericho: Mar 13, 2006., Issue 1187;  pg. 43
    • Grant Buckler : Application developers climb aboard Ruby on Rails  Computing Canada. Willowdale: Aug 19, 2005.Vol.31, Issue 11;  pg. 6
    • Daniel Bogan: Get on track with ruby on rails
    • Curt Hibbs:What Is Ruby on Rails?
    •   Bill Walton :Rolling with Ruby on [Instant]Rails http:// instantrails . rubyforge .org/tutorial/index.html
    • Curt Hibbs: Rolling with Ruby on Rails, Part 2
    • Curt Hibbs: Ajax on Rails