Ruby on Rails introduction

A short walk through Ruby and Rails/

Transcript

1. Ruby (on Rails) PHPBenelux @ Nucleus
2. • @joren • Openminds • ArrrrCamp
3. Ruby
4. History
5. History • 1995 • Yukihiro Matsumoto (aka Matz) • Philosophy: Designed for programmer productivity and fun.
6. History • Inspired by Perl, Smalltalk, Lisp, Python • “I wanted a scripting language that was more powerful than Perl, and more object-oriented than Python. That's why I decided to design my own language.”
7. Syntax
8. Dynamic typing
9. Strong typing
10. Duck typing • it walks like a duck; • it talks like a duck; • it will probably be a duck.
11. Objects
12. Objects • Everything is an object • Defined by its BEHAVIOUR
13. Objects Even primitive types
14. Classes - Modules • can be instantiated • object creation • can inherit • cannot be included • can *not* be instantiated • mixin facility, namespace • no inheritance • can be included in classes and modules
15. Classes - Modules
16. Dynamic re-open everything
17. Dynamic
18. Dynamic
19. Variables
20. Methods
21. Methods
22. Strings & numbers
23. Arrays
24. Hashes
25. Loops
26. Conditions
27. Stdlib abbrev base64 benchmark bigdecimal cgi cmath coverage csv curses date dbm debug delegate digest dl drb e2mmap English erb etc extmk fcntl fiddle fileutils find forwardable gdbm getoptlong gserver iconv io/console io/nonblock io/wait ipaddr irb json logger mathn matrix minitest minitest/benchmark minitest/spec mkmf monitor mutex_m net/ftp net/ http net/imap net/pop net/smtp net/telnet nkf objspace observer open- uri open3 openssl optparse ostruct pathname pp prettyprint prime profile profiler pstore psych pty racc racc/parser rake rdoc readline resolv resolv-replace rexml rinda ripper rss rubygems scanf sdbm securerandom set shell shellwords singleton socket stringio strscan sync syslog tempfile test/unit thread thwait time timeout tk tmpdir tracer tsort un uri weakref webrick win32ole xmlrpc yaml zlib
28. Gems • + 65.000 gems • little code libraries/modules • gem install twitter
29. Rails just another gem
30. History • 37 Signals (Basecamp) • David Heinemeier Hansson (aka DHH) • July 2004
31. MVC
32. Models • persintence-layer • validations • data manipulation methods • define relations • CRUD
34. Views • templates • html (erb, haml, slim), xml, pdf, json • custom languages
37. Controllers • get, post, patch, put, delete,… • parameter parsing • session / cookie management
39. REST
40. generators • rails generate model Product name description:text • rails generate controller products • rails generate mailer OrderMailer • rails generate migration AddActiveToProducts active:boolean • rails generate scaffold products • ‘rails generate’ to view all possibilities
41. Migrations • rake db:migrate • rake db:migrate:rollback • rake db:migrate:redo
42. Migrations
43. $ rake • rake is to ruby what make is to C • run little ruby scripts • often used for cronjobs • rake -T
44. Convention Over Configuration
45. Sinatra
46. Sinatra
47. Development
48. Ruby Version Management • chruby • rvm
49. Bundler • gem version management • bundle install rails • bundle update rails • bundle exec rails console • Gemfile & Gemfile.lock
50. Bundler
51. Tests • mini_test, unit_test • RSpec • cucumber • capybara
52. Run it • Local • bundle exec rails server • pow.cx
53. Run it • Online • rack: unicorn, puma, passenger
54. Deploy • mina • capistrano • cap deploy
55. Community & Learn
56. Ruby Tapas
57. RailsCasts
58. learn.thoughtbot.com/rails
59. Ruby Rogues (+parley)
60. Visit a conference (like ArrrrCamp)
61. rails girls <3
62. So…
63. Ruby makes me happy
64. Tell a story
65. Thanks! Let’s have a drink.