This series introduces students to ruby on rails 3 through the book "Agile Web Development with Rails" with accompanying lecture videos found at http://www.thinkbohemian.com/tag/rails-summer-of-code/

1. Rails Summer of Code
Week 1
Richard Schneeman - @ThinkBohemian

2. Rails - Week 1
• Rails Architecture
• MVC (Model View Controller)
• ORM (Object Relational Mapping)
• RESTful (REpresentational STate)
• Ruby
• Versus Rails
• Is Object Oriented
Richard Schneeman - @ThinkBohemian

3. Rails Architecture
• Terminology
• DRY
• Convention over Configuration
• Rails Architecture
• MVC (Model View Controller)
• ORM (Object Relational Mapping)
• RESTful (REpresentational State Transfer)
Richard Schneeman - @ThinkBohemian

4. DRY
Don’t Repeat Yourself
Reuse, don’t re-invent the...
Richard Schneeman - @ThinkBohemian

5. Convention over
Configuration
Decrease the number of decisions needed,
gaining simplicity but without losing flexibility.
Richard Schneeman - @ThinkBohemian

6. Model-View-Controller
• Isolates “Domain Logic”
• Can I See it?
• View
• Is it Business Logic?
• Controller
• Is it a Reusable Class Logic?
• Model
Richard Schneeman - @ThinkBohemian

7. Model-View-Controller
• Generated By Rails
• Grouped by Folders
• Connected “AutoMagically”
• Models
• Views
• Controllers
• Multiple Views Per Controller
Richard Schneeman - @ThinkBohemian

8. Object Relational Mapping
• Maps database backend to ruby objects
• ActiveRecord (Rail’s Default ORM)
>> userVariable = User.where(:name => "Bob")
Generates:
SELECT "users".* FROM "users"
WHERE (name = 'bob')
>> userVariable.name
=> Bob
Richard Schneeman - @ThinkBohemian

9. Object Relational Mapping
• >> userVariable = User .where(:name => "Bob")
models/user.rb
class User < ActiveRecord::Base
end
the User class inherits from ActiveRecord::Base
Richard Schneeman - @ThinkBohemian

10. Object Relational Mapping
• >> userVariable = User. where(:name => "Bob")
where is the method that looks in the database
AutoMagically in the User Table (if you made one)
Richard Schneeman - @ThinkBohemian

11. RESTful
REpresentational State Transfer
• The state of the message matters
• Different state = different message
“You Again?” “You Again?”
Richard Schneeman - @ThinkBohemian

12. RESTful
REpresentational State Transfer
• Servers don’t care about smiles
• They do care about how you access them
• (HTTP Methods)
• GET
• PUT
• POST
• DELETE
Richard Schneeman - @ThinkBohemian

13. RESTful
REpresentational State Transfer
• Rails Maps Actions to HTTP Methods
• GET - index, show, new
• PUT - update
• POST - create
• DELETE - destroy
Richard Schneeman - @ThinkBohemian

14. Ruby Versus Rails
• Ruby - Is a programming Language
• Like C# or Python
• Can be used to program just about anything,
• Rails - Is a Framework
• Written using Ruby
• Provides common web functionality
Richard Schneeman - @ThinkBohemian

15. Questions?
Richard Schneeman - @ThinkBohemian