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What is Ruby on Rails?


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A simple introduction to Ruby on Rails

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What is Ruby on Rails?

  1. 1. Ruby on Rails Karmen Blake Tuesday, May 5, 2009
  2. 2. Who am I? • Software Engineer who enjoys Ruby, Rails, and iPhone development • Work for GeneTree (http:// using RoR Tuesday, May 5, 2009
  3. 3. What is Rails? • Framework that makes it easier to develop, deploy, and maintain web applications • Often chosen as framework for Web 2.0 applications • Organized and developed by many developers around the world Tuesday, May 5, 2009
  4. 4. What is Rails? • Convention over Configuration • Java/.NET often used XML configuration for developers to painfully write to get an application up and going Tuesday, May 5, 2009
  5. 5. Rails is Agile • Individuals and interactions over process and tools • Working software over comprehensive documentation • Customer collaboration over contract negotiation • Responding to change over following a plan Tuesday, May 5, 2009
  6. 6. Model-View-Controller • Not a new concept • 1979 • Trygve Reenskaug invented concept for developing applications Tuesday, May 5, 2009
  7. 7. Model-View-Controller • Model: maintain data state and business rules performed on data • View: generating user interface used to display and interact with data (html, iphone, etc.) • Controller: orchestrate or direct events from the outside often by user interaction Tuesday, May 5, 2009
  8. 8. ActiveRecord • ORM (object relational mapper) allows easy syntax to handle most of your database interactions • abstracts database specific calls to one API • Allows you to use many different databases Tuesday, May 5, 2009
  9. 9. Tuesday, May 5, 2009