![Rutas: Parámetros
get '/hello/:name' do
# matches "GET /hello/foo" and "GET /hello/bar"
# params[:name] is 'foo' or 'bar'
"Hello #{params[:name]}!"
end
get '/hello/:name' do |n|
"Hello #{n}!"
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-11-2048.jpg)
![Rutas: splat
get '/say/*/to/*' do
# matches /say/hello/to/world
params[:splat] # => ["hello", "world"]
end
get '/download/*.*' do
# matches /download/path/to/file.xml
params[:splat] # => ["path/to/file", "xml"]
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-12-2048.jpg)
![Rutas: regex
get %r{/hello/([w]+)} do
"Hello, #{params[:captures].first}!"
end
get %r{/hello/([w]+)} do |c|
"Hello, #{c}!"
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-13-2048.jpg)
![Rutas: condiciones
get '/foo', :agent => /Songbird (d.d)[d/]*?/ do
"You're using Songbird v. #{params[:agent][0]}"
end
get '/foo' do
# Matches non-songbird browsers
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-14-2048.jpg)
![Variables en plantillas
get '/:id' do
@foo = Foo.find(params[:id])
haml '%h1= @foo.name'
end
get '/:id' do
foo = Foo.find(params[:id])
haml '%h1= foo.name', :locals => { :foo => foo }
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-20-2048.jpg)
![Pass
get '/guess/:who' do
pass unless params[:who] == 'Frank'
'You got me!'
end
get '/guess/*' do
'You missed!'
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-23-2048.jpg)
![Errores
# Sinatra::NotFound exception or response status code is 404
not_found do
'This is nowhere to be found'
end
# when an exception is raised from a route block or a filter.
error do
'Sorry there was a nasty error - ' + env['sinatra.error'].name
end
# error handler for status code
error 403 do
'Access forbidden'
end
get '/secret' do
403
end
# error handler for a range
error 400..510 do
'Boom'
end](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-24-2048.jpg)
![Ejecutar la aplicación
$ ruby myapp.rb [-h] [-x] [-e ENVIRONMENT]
[-p PORT] [-o HOST] [-s HANDLER]
Busca automáticamente un servidor compatible con
Rack con el que ejecutar la aplicación](https://image.slidesharecdn.com/strangersinthenight-100511170026-phpapp01/75/Strangers-In-The-Night-Ruby-Rack-y-Sinatra-Herramientas-potentes-para-construir-aplicaciones-y-servicios-web-pequenos-y-modulares-28-2048.jpg)
Uploaded byAlberto Perdomo
Strangers In The Night: Ruby, Rack y Sinatra - Herramientas potentes para construir aplicaciones y servicios web pequeños y modulares
Strangers In The Night discusses a Ruby web development conference called "Gem Talk" held in Las Palmas on November 5th, 2010. The talk was given by Alberto Perdomo and covered various Ruby web servers, frameworks, and middleware that can be used to build web applications and services. It also provided an overview of the Sinatra microframework, highlighting features like routes, templates, errors and testing. Examples of real-world Sinatra applications were shown to demonstrate its use for small sites, services and modular applications.
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Strangers In The Night: Ruby, Rack y Sinatra - Herramientas potentes para construir aplicaciones y servicios web pequeños y modulares
- 1. Strangers In TheNight Gem Talk Las Palmas on Rails 11/05/2010 Alberto Perdomo http://www.fickr.com/photos/nesster/4312984219/
- 2.
- 3. Interfaz para servidoresweb, frameworks web y middlewares en Ruby
- 4. Servidores web ● Thin ● Mongrel ● Ebb ● EventedMongrel ● Fuzed ● SwiftipliedMongrel ● Glassfsh v3 ● WEBrick ● Phusion Passenger ● FCGI ● Rainbows! ● CGI ● Unicorn ● SCGI ● Zbatery ● LiteSpeed
- 5. Frameworks ● Camping ● Ramaze ● Coset ● Ruby on Rails ● Halcyon ● Rum ● Mack ● Sinatra ● Maveric ● Sin ● Merb ● Vintage ● Racktools::SimpleApplication ● Waves ● Wee
- 6. Middleware ● Rack::URLMap → enrutar a distintas aplicaciones dentro del mismo proceso ● Rack::CommonLogger → fcheros de log comunes al estilo Apache ● Rack::ShowException → mostrar excepciones no captadas ● Rack::File → servir estáticos ● ...
- 8. DSL en Rubypara escribir aplicaciones y servicios web de forma rápida y compacta Funcionalidades mínimas, el desarrollador usa las herramientas que mejor se adapten al trabajo
- 9. Go! hi.rb require 'rubygems' require 'sinatra' get '/hi' do "Hello World!" end $ gem install sinatra $ ruby hi.rb == Sinatra has taken the stage ... >> Listening on 0.0.0.0:4567
- 10. Rutas get '/' do # .. show something .. RUTA end = post '/' do MÉTODO HTTP # .. create something .. + end PATRÓN URL put '/' do # .. update something .. end ORDEN delete '/' do # .. annihilate something .. end
- 11. Rutas: Parámetros get '/hello/:name'do # matches "GET /hello/foo" and "GET /hello/bar" # params[:name] is 'foo' or 'bar' "Hello #{params[:name]}!" end get '/hello/:name' do |n| "Hello #{n}!" end
- 12. Rutas: splat get '/say/*/to/*'do # matches /say/hello/to/world params[:splat] # => ["hello", "world"] end get '/download/*.*' do # matches /download/path/to/file.xml params[:splat] # => ["path/to/file", "xml"] end
- 13. Rutas: regex get %r{/hello/([w]+)}do "Hello, #{params[:captures].first}!" end get %r{/hello/([w]+)} do |c| "Hello, #{c}!" end
- 14. Rutas: condiciones get '/foo',:agent => /Songbird (d.d)[d/]*?/ do "You're using Songbird v. #{params[:agent][0]}" end get '/foo' do # Matches non-songbird browsers end
- 15. Estáticos ● Por defecto en /public ● /public/css/style.css → example.com/css/style.css ● Para usar otro directorio: set :public, File.dirname(__FILE__) + '/static'
- 16. Vistas ● Por defecto en /views ● Para usar otro directorio: set :views, File.dirname(__FILE__) + '/templates'
- 17. Plantillas: HAML, ERB ##You'll need to require haml in your app require 'haml' get '/' do haml :index end ## You'll need to require erb in your app require 'erb' get '/' do Renderiza /views/index.haml erb :index end
- 18. Más plantillas ● Erubis ● Builder ● Sass ● Less ## You'll need to require haml or sass in your app require 'sass' get '/stylesheet.css' do content_type 'text/css', :charset => 'utf-8' sass :stylesheet end
- 19. Plantillas inline get '/'do haml '%div.title Hello World' end
- 20. Variables en plantillas get'/:id' do @foo = Foo.find(params[:id]) haml '%h1= @foo.name' end get '/:id' do foo = Foo.find(params[:id]) haml '%h1= foo.name', :locals => { :foo => foo } end
- 21. Plantillas inline require 'rubygems' require'sinatra' get '/' do haml :index end __END__ @@ layout %html = yield @@ index %div.title Hello world!!!!!
- 22. Halt # stop arequest within a filter or route halt # you can also specify the status when halting halt 410 # or the body... halt 'this will be the body' # or both... halt 401, 'go away!' # with headers halt 402, {'Content-Type' => 'text/plain'}, 'revenge'
- 23. Pass get '/guess/:who' do pass unless params[:who] == 'Frank' 'You got me!' end get '/guess/*' do 'You missed!' end
- 24. Errores # Sinatra::NotFound exceptionor response status code is 404 not_found do 'This is nowhere to be found' end # when an exception is raised from a route block or a filter. error do 'Sorry there was a nasty error - ' + env['sinatra.error'].name end # error handler for status code error 403 do 'Access forbidden' end get '/secret' do 403 end # error handler for a range error 400..510 do 'Boom' end
- 25. Más cosas ● Helpers ● Before flters ● Error handlers ● Code reloading ● HTTP caching (etag, last-modifed)
- 26. Testing: Rack::Test require 'my_sinatra_app' require'rack/test' class MyAppTest < Test::Unit::TestCase include Rack::Test::Methods def app Sinatra::Application end def test_my_default get '/' assert_equal 'Hello World!', last_response.body end def test_with_params get '/meet', :name => 'Frank' assert_equal 'Hello Frank!', last_response.body end def test_with_rack_env get '/', {}, 'HTTP_USER_AGENT' => 'Songbird' assert_equal "You're using Songbird!", last_response.body end end
- 27. Sinatra::Base ● Para tener aplicaciones modulares y reusables require 'sinatra/base' class MyApp < Sinatra::Base set :sessions, true set :foo, 'bar' get '/' do 'Hello world!' end end
- 28. Ejecutar la aplicación $ruby myapp.rb [-h] [-x] [-e ENVIRONMENT] [-p PORT] [-o HOST] [-s HANDLER] Busca automáticamente un servidor compatible con Rack con el que ejecutar la aplicación
- 29. Deployment (ejemplo) Apache + Passenger confg.ru + public require 'yourapp' set :environment, :production run Sinatra::Application
- 30. Ejemplos de laVidaReal®
- 31. git-wiki LOCs Ruby: 220 http://github.com/sr/git-wiki Un wiki que usa git como backend
- 32. RifGraf LOCs Ruby: 60 http://github.com/adamwiggins/rifgraf Servicio web para recolección de datos y gráfcas
- 33. github-services LOCs Ruby: 117 (sin los servicios) http://github.com/pjhyett/github-services Service hooks para publicar commits
- 34. integrity http://integrityapp.com/ Servidor de integración continua
- 35. scanty http://github.com/adamwiggins/scanty/ Blog muy sencillo
- 36. panda http://github.com/newbamboo/panda Solución devideo encoding y streaming sobre Amazon S3
- 37. A Sinatra legustan.. ● las microaplicaciones web ● los servicios web sin interfaz HTML ● los pequeños módulos independientes para aplicaciones web de mayor tamaño
- 38.
- 39.
- 40.
- 41. Referencias ● http://rack.rubyforge.org/ ● http://www.sinatrarb.com ● http://www.slideshare.net/happywebcoder/alternativas-a-rails-para-sitios-y-servicios-web-ultraligeros ● http://www.slideshare.net/adamwiggins/lightweight-webservices-with-sinatra-and-restclient-presentation ● http://tinyurl.com/ruby-web-performance