![[title]
[sub title]](https://image.slidesharecdn.com/presentation-120817080318-phpapp02/85/Ruby-on-Rails-Presentation-10-320.jpg)
![Arrays For example
A list surrounded by square brackets [1,2,3] and [‘A’,‘B’,‘C’]
out...
Try it
>> a = [1,2,3,4,5]
=> [1,2,3,4,5]
>> a
=> [1,2,3,4,5]
>> a[1]
=> 2
>> a[1, 3]
=> [2,3,4]](https://image.slidesharecdn.com/presentation-120817080318-phpapp02/85/Ruby-on-Rails-Presentation-30-320.jpg)
![Hashes For example
A list surrounded by curly braces {1=>2, 3=>4} and
{:a => ‘Ant’,
:b => ‘Badger’}
out...
Try it
>> h = {:a => ‘Good’, :b => ‘Bad’}
=> {:a => ‘Good’, :b => ‘Bad’}
>> h(:a)
=> ‘Good’
>> h.keys
=> [:a, :b]
>> h.values
=> [‘Good’, ‘Bad’]](https://image.slidesharecdn.com/presentation-120817080318-phpapp02/85/Ruby-on-Rails-Presentation-31-320.jpg)
![class Person
attr_accessor :first_name, :last_name
def initialize(first, last)
self.first_name = first
self.last_name = last
end
def full_name
[self.first_name, self.last_name].join(“ ”)
end
end
p = Person.new(‘Dave’, ‘Jones’)
p.first_name #=> “Dave”
p.last_name #=> “Jones”
p.full_name #=> “Dave Jones”](https://image.slidesharecdn.com/presentation-120817080318-phpapp02/85/Ruby-on-Rails-Presentation-34-320.jpg)
![Fundamental JavaScript [UTC, March 2014]](https://cdn.slidesharecdn.com/ss_thumbnails/fundamentaljavascriptutcmarch2014-140305104047-phpapp01-thumbnail.jpg?width=560&fit=bounds)
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Ruby on Rails Presentation
- 1. Ruby on Rails A Complete Introduction
- 2. Good Morning Welcome to Carsonified . a ve.. is is D Th Hi there!
- 3. Who am I? Adam Cooke I work at... which is part of ... I have developed and lots of other stuf f
- 4. ... and you are?
- 6. Introduction The Rails Basics Building a Blogging Engine More Advancement Testing When things go wrong! Deployments Finishing up
- 7. re ... a re he you 1 Introduction What is Rails? The MVC Pattern Ruby Overview RubyGems Installing Rails Components of Rails
- 9. David Heinemeier Hansson aka DHH & the res t of the R ails Core Team
- 13. The MVC Pattern Model-view-controller
- 14. Controller Model View
- 15. Rails routing happens here Controller Model View Database Resource Return to the browser
- 16. Ruby
- 17. Simple Easy to write Elegant
- 18. Everything is an object Module String Hash Array Proc Fixnum Symbol Numeric
- 19. class Numeric def plus(x) self.+(x) end end y = 5.plus 10 #=> 15
- 20. 5.times { puts “Hello!” }
- 21. Ruby Objects
- 22. Variables For example Any plain, lowercase word a, my_variable and banana10 out... Try it >> blah NameError: undefined local variable or method `blah' >> string = “Hello World!” => “Hello World!” >> string => “Hello World!”
- 23. Numbers For example Integers - positive or negative 1, 41231 and -68835 out... Try it >> 5 + 10 => 15 >> 10 * 10 => 100 >> 3.1 + 1.55 => 4.65
- 24. Strings For example Anything surrounded by quotes “Dave”, “123”and “My name is...” out... Try it >> my_quote = “My name is Dave!” => “My name is Dave!” >> my_quote => “My name is Dave!”
- 25. Symbols For example Start with a colon, look like words :a, :first_name and :abc123 out... Try it >> my_symbol = :complete => :complete >> my_symbol => :complete
- 26. Constants For example Like variables, with a capital Hash, Monkey and Dave_The_Frog out... Try it >> MyMonkey = “James” Yo us => “James” hou ldn ’t >> MyMonkey = “Michael” ch an (irb):1: warning: already initialized constant MyMonkey ge it,a => “Michael” ft er it ’s be en se t
- 27. Methods For example The verbs! say_hello and close out... Try it >> def say_hello >> puts “Hello!” >> end >> say_hello Hello! => nil
- 28. Method Args For example Passing data to methods say_hello(name) out... Try it >> def say_hello(name, age) >> puts “Hello #{name}!” >> puts “You are #{age}!” >> end >> say_hello(‘Keir’, 45) Hello Keir! You are 45! => nil
- 29. Method Args For example Passing data to methods say_hello(name) out... Try it >> def say_hello(name, age) >> puts “Hello #{name}!” >> puts “You are #{age}!” >> end >> say_hello(‘Keir’, 45) Hello Keir! You are 30! => nil
- 30. Arrays For example A list surrounded by square brackets [1,2,3] and [‘A’,‘B’,‘C’] out... Try it >> a = [1,2,3,4,5] => [1,2,3,4,5] >> a => [1,2,3,4,5] >> a[1] => 2 >> a[1, 3] => [2,3,4]
- 31. Hashes For example A list surrounded by curly braces {1=>2, 3=>4} and {:a => ‘Ant’, :b => ‘Badger’} out... Try it >> h = {:a => ‘Good’, :b => ‘Bad’} => {:a => ‘Good’, :b => ‘Bad’} >> h(:a) => ‘Good’ >> h.keys => [:a, :b] >> h.values => [‘Good’, ‘Bad’]
- 32. The Big One...
- 33. Classes Anatomy of a class class Person attr_accessor :first_name, :last_name end p = Person.new p.first_name = ‘Dave’ p.last_name = ‘Jones’ p.first_name #=> “Dave”
- 34. class Person attr_accessor :first_name, :last_name def initialize(first, last) self.first_name = first self.last_name = last end def full_name [self.first_name, self.last_name].join(“ ”) end end p = Person.new(‘Dave’, ‘Jones’) p.first_name #=> “Dave” p.last_name #=> “Jones” p.full_name #=> “Dave Jones”
- 35. Ruby Gems Your Ruby Package Manager
- 36. user@dev01:~# gem list *** LOCAL GEMS *** abstract (1.0.0) actionmailer (2.1.0, 2.0.2, 1.3.6, 1.3.3) actionpack (2.1.0, 2.0.2, 1.13.6, 1.13.3) actionwebservice (1.2.6, 1.2.3) activerecord (2.1.0, 2.0.2, 1.15.6, 1.15.3) activeresource (2.1.0, 2.0.2) activesupport (2.1.0, 2.0.2, 1.4.4, 1.4.2) acts_as_ferret (0.4.1) aws-s3 (0.4.0) builder (2.1.2) capistrano (2.3.0, 1.4.0) cgi_multipart_eof_fix (2.5.0, 2.2) cheat (1.2.1) chronic (0.2.3) codebase-gem (1.0.3) daemons (1.0.10, 1.0.9, 1.0.7) dnssd (0.6.0) erubis (2.5.0)
- 37. gem install rails gem remove rails gem update rails
- 38. Useful Gems The Rails Gems rails actionmailer actionpack mongrel_cluster activerecord capistrano activeresource mysql activesupport rails rake
- 39. Components of Rails Action Pack Active Support Active Record Action Mailer Active Resource
- 40. Action Pack All the view & controller logic
- 41. Active Support Collection of utility classes and library extensions
- 42. Active Record The object relationship mapper
- 43. Action Mailer E-Mail Delivery
- 44. 1 Introduction What is Rails? The MVC Pattern Ruby Overview RubyGems Installing Rails Components of Rails ... are here you
- 45. re ... a re he you 2 The Rails Basics Development Tools & Environment Generating an Application The Directory Structure Starting up the app “RESTful Rails” Routing & URLs
- 46. Active Resource Connect with REST web services
- 47. Editors & IDEs
- 49. Generating an App. rails my_app_name rails my_app_name -d mysql
- 50. app Contains the majority of your application specific code config Application config - routing map, database config etc... db Database schema, SQLite database files & migrations doc Generated HTML API documentation for the application or Rails lib Application-specific libraries - anything which doesn’t belong in app/ log Log files and web server PID files public Your webserver document root - contains images, JS, CSS etc... script Rails helper scripts for automation and generation test Unit & functional tests along with any fixtures tmp Application specific temporary files vendor External libraries used in the application - gems, plugins etc...
- 51. app controllers Controllers named as posts_controller.rb config helpers View helpers named as posts_helper.rb db models Models named as post.rb doc views Controller template files named as posts/index.html.erb for the lib PostsController#index action log views/layouts Layout template files in the format of application.html.erb for an public application wide layout or posts.html.erb script for controller specific layouts. test tmp vendor
- 52. Starting the App Running a Local Webserver script/server
- 53. “RESTful Rails” Representational State Transfer
- 54. HTTP Methods GET POST PUT DELETE READ CREATE UPDATE DESTROY
- 55. Resource: Customer /customers GET index POST create /customers/1234 GET show PUT update DELETE destroy /customers/new GET new /customers/1234/edit GET edit
- 56. Routing & URLs config/routes.rb
- 57. domain.com/my-page map.connect “my-page”, :controller => “pages”, :action => “my” domain.com/customers (as a resource) map.resources :customers domain.com (the root domain) map.root :controller => “pages”, :action => “homepage” domain.com/pages/about map.connect “pages/:action”, :controller => “pages” domain.com/pages/about/123 map.connect “:controller/:action/:id”
- 58. Named Routes rake routes
- 59. URL Helpers can use named routes (link_to, form for...) <%=link_to ‘Homepage’, root_path%> <%=link_to ‘Customer List’, customers_path%> <%=link_to ‘View this Customer’, customer_path(1234)%> <%=link_to ‘Edit this Customer’, edit_customer_path(1234)%> <%form_for :customer, :url => customers_path do |f|...%> A POST request - so will call the ‘create’ action
- 60. 2 The Rails Basics Development Tools & Environment Generating an Application The Directory Structure Starting up the app “RESTful Rails” Routing & URLs ... are here you