RubyEnRails2007 - Dr Nic Williams - Keynote
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Dr Nic gives his report on what's cool with Rails right now
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RubyEnRails2007 - Dr Nic Williams - Keynote
- 1. Dr Nic drnicwilliams.com Remember: drnicacademy.com * setup for demo of magic_model_generator (pp 36) * set font size of database.yml to large What’s cool about Rails?
- 2. Dr Nic
- 4. MyConfPlan
- 7. Magic Multi-Connections As seen on DHH’s blog
- 8. NewGem Generator $ newgem <gem>
- 9. NewGem Generator As seen in $ newgem <gem>
- 11. Magic Model Generator As seen in ??
- 12. why?
- 13. Dr Nic’s
- 14. Dr Nic’s Academy
- 15. Dr Nic’s Academy “Beginning Ruby on Rails” July 7/8 - Netherlands
- 16. RailsConf
- 17. So why is important?
- 18. Why is important?
- 19. Why is important? When do I use ?
- 20. Why is important? When do I use ? Merb Camping CGI Mongrel Handlers
- 21. RailsConf Bet ween last year and this year, I’ve realised they aren’t “Railsconfs”, but...
- 22. RailsConf Bet ween last year and this year, I’ve realised they aren’t “Railsconfs”, but...
- 23. RubyConf About web development and other things
- 24. Websites are text And it doesn’t matter how the text gets to the browser
- 25. <html> <head> <title>Hello world</title> </head> <body> Here’s some <p>Hello World</p> might send text that you </body> </html>
- 26. Rails When you come to I just want to talk Rails you quickly about these 3... learn there are many things you need to get good at quickly...
- 27. Javascript HTML CSS Rails Gems Ruby When you come to I just want to talk Rails you quickly about these 3... learn there are many things you need to get good at quickly... Rake Databases Unix
- 28. Javascript HTML CSS Rails Gems Ruby When you come to I just want to talk Rails you quickly about these 3... learn there are many things you need to get good at quickly... Rake Databases Unix
- 29. RailsConf 2006 To understand Rails and where its going, let’s look at rails 1.0
- 30. RailsConf 2006 To understand Rails and where its going, let’s look at rails 1.0 “Can we make $$$ from Rails?”
- 31. RailsConf 2007
- 32. RailsConf 2007 “Yes.”
- 33. RailsConf 2007 “Because its just text generation” Ok, now let’s look at the latest ways to generate text on the web...
- 34. “Does it scale?” Everyone worries about requests per second; but I think its more important to worry about the cost per new feature. Rails is structured to make it easy to design and implement new stuff.
- 35. “Does it scale?” “Yes. Just add more controllers.” Everyone worries about requests per second; but I think its more important to worry about the cost per new feature. Rails is structured to make it easy to design and implement new stuff.
- 36. RESTful controllers class PeopleController < ApplicationController # GET all or search def index... def show... def new... def edit... def create... def update... def destroy... end
- 37. RESTful controllers class PeopleController < ApplicationController # GET all or search def index... def show... def new... CRUD operations def edit... def create... def update... def destroy... end
- 38. RESTful routes /people/show/1 => /people/1 /people/some_action/45 => /people/45/some_action Its now cool to use restful routing. The benefit is you can remove the tail of a url, and the url is still meaningful.
- 39. One of the main agreements about convention in Rails RESTful result types is RESTfulness. Same actions, but new paradigm. class PeopleController < ApplicationController def create @person = Person.create(params[:person]) respond_to do |format| format.html { redirect_to person_url(@person) } format.xml { render :status => :created, :location => person_url(@person), ... } end From developer side, end you can return more end data formats with the same actions.
- 40. One of the main agreements about convention in Rails RESTful result types is RESTfulness. Same actions, but new paradigm. class PeopleController < ApplicationController def create @person = Person.create(params[:person]) respond_to do |format| format.html { redirect_to person_url(@person) } format.xml { render :status => :created, :location => person_url(@person), ... } end From developer side, end you can return more end data formats with the same actions.
- 41. Any format you want respond_to do |format| format.html { render ... } format.xml { render ... } format.csv { render ... } format.js { render ... } formal.foobar { render ... } end
- 44. This is cool because... class Person < ActiveResource::Base self.site = quot;http://contacts.drnicwilliams.com:3000/quot; end Person.find_by_name quot;Dr Nic Williamsquot; Who cares what REST is? This syntax is awesome.
- 45. Learn more? Read the README and CHANGELOG for ActiveResource http://dev.rubyonrails.org/browser/trunk/activeresource/README
- 46. Jester: REST for Javascript Base.model(quot;Personquot;, { plural: quot;peoplequot;, prefix: quot;http://drnicwilliams.com:3000quot;}) Person.find(quot;allquot;, { premium: true }, This #find call is asynchronous { onSuccess: callback }) and invokes callback on complete. by Eric Mill
- 47. “Logical” servers for the connector 1) Jumpstart/PXE Boot 2) Monitoring 3) Auditing 4) Logging 5) Provisioning and configuration management 6) DHCP/LDAP for server identification/authentication and control (at dual for failover) 7) DNS: DNS cache and resolver, and a (private) DNS system (4x + 2; 2+ sites) 8) DNS MySQL (4x + 2, dual masters with slaves per DNS node, innodb tables) 9) SPAM filtering servers (files to NFS store and tracking to postgresql) 10) SPAM database setup (postgresql) 11) SPAM NFS store 12) SMTP proxies and gateways out 13) SMTP proxies and gateways in (delivery to clusters to Maildir over NFS) 14) Mail stores 15) IMAP proxy servers 16) IMAP servers 17) User LDAP servers 18) User long running processes 19) User postgresql DB servers 20) User web servers 21) User application servers 22) User File Storage (NFS) 23) Joyent Organization Provisioning/Customer panel servers (web, app, database) 24) iSCSI storage systems 25) Chat servers Jason Hoffman, Railsconf 2007 26) Load balancer/proxies/static caches ...
- 48. Guess which is “Rails”? Jason Hoffman, Railsconf 2007
- 49. Jason Hoffman, Railsconf 2007
- 50. A process of ongoing improvement
- 51. Hosting Don’t deploy Rails to Amazon’s EC2 Run Ruby scripts on Amazon’s EC2 EC2 have virtual Use EC2 for storage - if you other lose your instance, processes on you lose data. demand. Backup hourly.
- 52. Deployment Capistrano - by Jamis Buck + Deprec - by Mike Bailey deprec = deployment recipies
- 53. deprec - easy peasy cap install_rails_stack cap setup cap deploy_with_migrations cap restart_apache Slap ubuntu on a machine and go.
- 54. install_rails_stack task :install_rails_stack do setup_user_perms enable_universe disable_cdrom_install install_packages_for_rails install_rubygems The process of install_gems deploying rails install_apache generically is being solved end
- 55. Story of 200 database tables
- 57. For demo: $ pgstart magic_model_generator $ rails magic_show -d postgresql $ database.yml: database: activerecord_unittest $ Kill textmate and reload it fresh from magic_show folder $ Have /db and /app/models folders open and empty $ Pump up font size $ iTerm open to magic_show folder Now, demo is ready $ sudo gem install magic_model_generator # Show post.rb as example $ rails magic_show $ cd magic_show # point database.yml to legacy database $ rake db:migrate # check /db/schema.rb contains all tables $ ruby script/generate magic_model # check /app/models contains model files
- 59. Instead of plugins, use gems
- 60. Dependencies
- 61. Version numbers
- 62. Use outside of Rails
- 63. Non-ruby code
- 64. “But I don’t know how?”
- 65. hoe - Ryan Davis
- 66. hoe - Ryan Davis seattle.rb - ZenTest/autotest
- 67. hoe - Ryan Davis seattle.rb - ZenTest/autotest # Rakefile hoe = Hoe.new(GEM_NAME, VERS) do |p| p.author = AUTHOR p.description = DESCRIPTION p.email = EMAIL p.summary = SUMMARY p.url = HOMEPATH end Its easier to write a Gem than not to!
- 68. r a k e
- 69. r a k e
- 70. History.txt == 0.2.0 2007-06-03 * Added more foo into foo.rb == 0.1.0 2007-06-02 * Foo and Bar now in own files * Using Hoe
- 71. History.txt Manifest.txt Manifest.txt README.txt Rakefile bin/gemsonrails lib/gemsonrails.rb lib/gemsonrails/version.rb scripts/txt2html setup.rb templates/init.rb ordered list of templates/tasks_gems_freeze.rake published files templates/tasks_gems_link.rake templates/tasks_gems_unfreeze.rake templates/tasks_load_tasks_in_gems.rake test/test_gemsonrails.rb test/test_helper.rb website/index.html website/index.txt website/javascripts/rounded_corners_lite.inc.js website/stylesheets/screen.css website/template.rhtml
- 72. History.txt Manifest.txt Manifest.txt README.txt Rakefile bin/gemsonrails lib/gemsonrails.rb lib/gemsonrails/version.rb scripts/txt2html setup.rb templates/init.rb ordered list of templates/tasks_gems_freeze.rake published files templates/tasks_gems_link.rake templates/tasks_gems_unfreeze.rake templates/tasks_load_tasks_in_gems.rake test/test_gemsonrails.rb test/test_helper.rb website/index.html website/index.txt website/javascripts/rounded_corners_lite.inc.js website/stylesheets/screen.css website/template.rhtml rake check_manifest
- 73. NewGem Generator $ newgem <gemname> newgem.rubyforge.org
- 75. Test::Unit or RSpec newgem.rubyforge.org
- 76. Finally...
- 77. JRuby is cool
- 78. Learn on ! Dr Nic Academy drnicacademy.com
- 79. What: Beginning Rails When: July 7 and 8th Where: Amsterdam +/- BYO: Laptop Cost: 975€ drnicacademy.com
- 80. What: Beginning Rails When: July 7 and 8th Where: Amsterdam +/- BYO: Laptop Cost: 975€ 600€ - “rubyenrails” drnicacademy.com
- 81. Enjoy En ! drnicwilliams.com drnicacademy.com by Dr Nic