Talk given to introduce the concepts behind rails. Be sure to checkout the sample application that goes with it at: https://github.com/rschmukler/sample_rails

1. Ruby on Rails
Rapid Prototyping of Web Applications

2. Speaker.new(:name => "Ryan Schmukler",
:jobs => ["Student", "Developer"],
:email => "ryan@dreamcloudstudios.com")

3. Today...
• Introduction to Ruby
• Introduction to Rails
• Sample Application
• Going Forward...

4. Introducing: Ruby
• Written my Matz in mid
90s
• Dynamically Typed
• Focus on the
programmer
• Interpreted

5. Interactive Ruby (IRB)
• Command line app for running ruby code
• Let’s you play with code.

6. Hello... World
def hello_world
puts "Hello World" # or puts("Hello World");
end
hello_world # or hello_world();

7. Some More Code
#Args
def say_hello_to(name)
puts "Hello #{name}"
end
say_hello_to "The Hub!"
#Blocks
3.times do
puts "Hello again!"
end
["Billy", "Bobby", "Joey"].each do |name|
puts "#{name} go to bed!"
end
a=5
b = 10
sum = a + b
puts sum

8. Classes
class Person
@@default_age = 22
attr_accessable :name, :age
def initialize
@age = @@default_age
end
def favorite_color
@favorite_color
end
def favorite_color=(color)
@favorite_color = color
end
def say_hello
puts "Hello my name is #{@name}"
end
end

9. Gems
• Gems are Ruby’s name for libraries.
• Gem command serves as a package
manager. (eg. gem install rails)
• https://www.ruby-toolbox.com/

10. Ruby on Rails
• One bad ass gem (actually, lots of gems)
• Full stack web application framework
• Convention over configuration (CoC)
• Don’t Repeat Yourself (DRY)
• Built by 37Signals

11. MVC

12. Models
• Usually map to Database (ActiveRecord)
• Hold the “business logic”
• Represent the Information of the
application

13. Views
• User interface
• Usually HTML with embedded Ruby

14. Controllers
• “Glue” between Models and Views
• Get data out of the request
• Forward data to proper models and views

15. MVC (again, with Rails!)

16. Make Good Cake...

17. Rails is RESTful
• Coined by Roy T. Fielding in his PhD Thesis
• Read the paper. I over simplify. A LOT.
• REpresentational State Transfer (REST)
• Give Everything IDs
• Standardize
• Stateless communication

19. Rails is Opinionated
• CoffeeScript - “the little language that
compiles into Javascript”
• SASS - CSS, if it didn’t suck.

20. Lets get Coding!
• https://github.com/rschmukler/sample_rails

21. A few shameless plugs...
• GoodMate - got bad roommates? We can
help.
• DreamCloudStudios - Consider hiring me!
Or shoot me an email if you ever need
something!
• Badger Innovations - Student Run Web Dev
Shop. Apply for a job if you like this stuff!
• Know Design? Email me! I will buy you beer.

22. Don’t forget to Vote
• Go vote for a talk you’d like to see. http://
voterapp.herokuapp.com/.You get 2 votes!
• Got an idea for one? Email me and we will
see what we can do.
• I’m here next semester so say Hi