Sinatra 0.9 - Corey Donohoe

Sinatra (Cl|S)assy Web Development Corey Donohoe([email protected])

Thursday, May 14, 2009

Corey Donohoe [email protected] / http://atmos.org

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Open Source Participant

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2001

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Writing Rails since 2004

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Engine Yard in March 2007

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ran support for a while

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“integration” team

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It’s Take Your Breath Away Awesome Thursday, May 14, 2009

http://github.com/sinatra Thursday, May 14, 2009

Micro Framework

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powered by rack

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history

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advances

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fulfilling

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Classic Applications get(‘/’) { “Hello World” }

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http://sinatrarb.com Thursday, May 14, 2009

require 'rubygems' require 'sinatra' helpers do def greeting haml :greeting end end template :greeting do "%h2 Hello World" end get('/') do greeting end

Hello World Thursday, May 14, 2009

throw that in a file

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run it

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Where’s my config file?

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where’s my database.yml

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There isn’t one(there isn’t even a db)

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Wonderful for One Offs

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HTTP Verbs

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["/foo", "/bar", "/baz"].each do |path| get path do "You've reached me at #{request.path_info}" end end

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Block Syntax

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get '/hello/:name' do |n| "Hello #{n}!" end

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params hash

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templates

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template :foo do <<-HAML %h2 Greetings %p Lorem Ipsum HAML end

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set :views, ‘views’

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views/foo.haml

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helpers do; end

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helpers do include Rack::Utils alias_method :h, :escape_html def localhost(suffix) port_part = case request.scheme when "http" request.port == 80 ? "" : ":#{request.port}" when "https" request.port == 443 ? "" : ":#{request.port}" end "#{request.scheme}://#{request.host}#{port_part}#{suffix}" end end

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Configuration Options

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enable :sessions

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set :public, ‘public’

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set :foo, 'bar' set :baz, Proc.new { "Hello " + foo } get '/baz' do "baz is set to " + options.baz end

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enable/disable

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Check the FAQ

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Modular Style class MyApp < Sinatra::Default; end

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remove global scope

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instances

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reusable instances

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module Hancock class ConfigurationError < StandardError; end class App < Sinatra::Default enable :sessions set :sreg_params, [:email, :first_name, :last_name, :internal] set :provider_name, 'Hancock SSO Provider!' set :do_not_reply, nil register register register register end end

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Sinatra::Hancock::Defaults Sinatra::Hancock::Sessions Sinatra::Hancock::Users Sinatra::Hancock::OpenIDServer

global scope moved inside my class

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as class methods

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pretty much works the same

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register class method nice modular pieces of sinatra apps

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module Sinatra module Hancock module Sessions def self.sessions_template(file) template = File.expand_path(File.dirname(__FILE__)+'/views/sessions') File.read("#{template}/#{file}.haml") end module Helpers def session_user session['user_id'].nil? ? nil : ::Hancock::User.get(session['user_id']) end end def self.registered(app) app.helpers(Sinatra::Hancock::Sessions::Helpers) app.template(:unauthenticated) { sessions_template ('unauthenticated') } app.get '/sso/login' do ensure_authenticated end app.post '/sso/login' do @user = ::Hancock::User.authenticate(params['email'], params['password']) if @user session['user_id'] = @user.id end ensure_authenticated redirect session['return_to'] || '/' end app.get '/sso/logout' do session.clear redirect '/' end end end end end

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Sinatra::Hancock::Sessions

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lib/sinatra/hancock/sessions.rb

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auto register by requiring

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no one is really using this

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module Hancock class ConfigurationError < StandardError; end class App < Sinatra::Default enable :sessions set :sreg_params, [:email, :first_name, :last_name, :internal] set :provider_name, 'Hancock SSO Provider!' set :do_not_reply, nil register register register register end end

Sinatra::Hancock::Defaults Sinatra::Hancock::Sessions Sinatra::Hancock::Users Sinatra::Hancock::OpenIDServer

OMG LOOK WHAT I MADE! you can share it with your buddies

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be responsible

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under the hood yo dawg, i heard you were into rack

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http://github.com/chneukirchen/rack Thursday, May 14, 2009

bacon

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i don’t use it

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made up the tumblelog

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rackup

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specifies the app to run

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configurable stuff, ports, hostnames etc

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middleware to run also

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use

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specific middleware

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initialize method

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block syntax

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#!/usr/bin/env rackup use EySso do |sso| sso.only_staff! end # vim:filetype=ruby

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use in Sinatra

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initialize arity

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first parameter is the app

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it’s implied

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use Rack::HoptoadNotifier,‘10c4cc2f6aa6b9e1104a921c5fdae4b0846d4475’

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Rack::HoptoadNotifier.new(app,‘10c4cc2f6aa6b9e1104a921c5fdae4b0846d4475’)

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initialize w/ a block

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use in Rails

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config.middleware.use

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it’s a string

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script/generate metal

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works with Sinatra::Default

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just inherit from them

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use in merb

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no rack.session

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config/rack.rb

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who still writes merb apps?

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use in ramaze

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no rack.session

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not becoming rails

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map

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russian doll

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#!/usr/bin/env rackup require File.dirname(__FILE__) + '/lib/setup' require 'gateway/app' require 'migration/app' use Rack::Static, :urls => ["/css", "/img", "/js"], :root => "public" map "/gateway/" do use EySso run Gateway::App end map "/migration/" do use Rack::ShowExceptions if ENV["RACK_ENV"] == "production" use EySso do |sso| sso.only_staff! end end run Migration::App end map "/" do app = lambda do |env| [404, {"Content-Type" => "text/plain", "Content-Length" => "9"}, ["Not found"]] end run app end

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with a url helper hack

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helpers do def url(path) request.script_name + path end end

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#!/usr/bin/env rackup require File.dirname(__FILE__) + '/lib/setup' require 'gateway/app' require 'migration/app' use Rack::Static, :urls => ["/css", "/img", "/js"], :root => "public" map "/gateway/" do use EySso run Gateway::App end map "/migration/" do use Rack::ShowExceptions if ENV["RACK_ENV"] == "production" use EySso do |sso| sso.only_staff! end end run Migration::App end map "/" do app = lambda do |env| [404, {"Content-Type" => "text/plain", "Content-Length" => "9"}, ["Not found"]] end run app end

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every day kinda stuff

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so back to sinatra

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Sinatra::Base

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this is middleware

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you should really read the docs

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straight rack, no sinatra

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major frameworks integrate ok

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Sinatra::Default

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this is a sinatra application

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these are FUN

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your rackup files invoke these

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so you got all that, right?

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Deployment Thursday, May 14, 2009

easy

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Passenger Thursday, May 14, 2009

nginx

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nginx config http { ... server { listen 80; server_name hancock.atmos.org root /data/hancock; passenger_enabled on; # <--- These lines passenger_base_uri /hancock; # <--- added. } ... }

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apache

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Apache 2 Vhost Config ServerName hancock.atmos.org DocumentRoot /data/hancock/current/public RackEnv 'production' Options FollowSymLinks AllowOverride None Order allow,deny Allow from all

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script/

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script/console #!/usr/bin/env ruby require "irb" require 'rubygems' require 'twitrsvp' DataMapper.setup(:default, "mysql://atmos:s3cr3t@localhost/twitrsvp_production") ENV['TWIT_RSVP_READKEY'] = '4the' ENV['TWIT_RSVP_READSECRET'] = 'lulz' include ::TwitRSVP if __FILE__ == $0 IRB.start(__FILE__) else # check -e option if /^-e$/ =~ $0 IRB.start(__FILE__) else IRB.setup(__FILE__) end end

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crons, whatever

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gnu screen

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Testing Fleshing things out

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i’m a huge fan

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TATFT

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acceptance testing

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TDD as a design tool

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Sinatra::Test

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is Deprecated

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Sticky Sessions Inside Your Tests

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rack-test http://github.com/brynary/rack-test/tree/master

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require "rack/test" class HomepageTest < Test::Unit::TestCase include Rack::Test::Methods def app MyApp.new end def test_redirect_logged_in_users_to_dashboard authorize "bryan", "secret" get "/" follow_redirect! assert_equal "http://example.org/redirected", last_request.url assert last_response.ok? end end

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Webrat Matchers

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What You Should Be Doing

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Webrat http://github.com/brynary/webrat

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have_selector

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have_selector("#zendesk_organization_2 .name:contains('Zondervan’)”)

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Cucumber http://github.com/aslakhellesoy/cucumber/tree/master

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Combination of the previous two

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rack-test verbs instead of visit

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webrat selectors for validations

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drive browsers

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safariwatir and selenium-rc

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acceptance testing is wonderful

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reflection Thursday, May 14, 2009

simple

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reusable

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nice performance

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not fighting my framework

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leverage all the ruby libs

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develop like a pro

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not overwhelmed with choices

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future is known

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merb

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rails 3

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think UNIX

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FUN

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creative juices flowing

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hack out something fun

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solve something annoying

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That’s it! :D ✤

http://github.com/sinatra/sinatra

✤

http://github.com/chneukirchen/rack

✤

http://github.com/atmos/hancock

✤

http://github.com/atmos/hancock-client

✤

http://github.com/atmos/hancock-client-rails

✤

http://github.com/brynary/rack-bug

✤

http://github.com/foca/integrity

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Hancock Thursday, May 14, 2009

Like Your John Hancock

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Single Sign On

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gem 'hancock', '~>0.0.1' require 'hancock' DataMapper.setup(:default, "sqlite3:///#{Dir.pwd}/development.db") Hancock::App.set :views, 'views' Hancock::App.set :public, 'public' Hancock::App.set :environment, :production Hancock::App.set :provider_name, 'Example SSO Provider' Hancock::App.set :do_not_reply, '[email protected]' Sinatra::Mailer.config = { :host => 'smtp.example.com', :port => '25', :user => 'sso', :pass => 'lolerskates', :auth => :plain # :plain, :login, :cram_md5, the default is no auth :domain => "example.com" # the HELO domain provided by the client to the server } run Hancock::App

config.ru Thursday, May 14, 2009

Example

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Hancock-Client Thursday, May 14, 2009

Sinatra App

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Rack App

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Hancock-Client-Rails

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metal

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\m/

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Rails 2.3.x

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config/environment.rb require File.join(File.dirname(__FILE__), 'boot') require 'hancock' Rails::Initializer.run do |config| config.gem 'hancock', :lib => 'hancock' config.middleware.use 'Hancock::Client' # all your other normal stuff end

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