Fly your HTTP to the moon
Edmonton Rubyists
March 2, 2010
Daniel Huckstep
Software engineer (EIT)
Sinatra
...it's awesome
Simple → Fast → Easy → Fun
Obligatory 'Hello, World!'
require 'rubygems'
require 'sinatra'
get '/' do
'Hello, World!'
end
$ ruby app.rb
== Sinatra/1.0.a has taken the stage on 4567 for development with backup from Thin
>> Thin web server (v1.2.5 codename This Is Not A Web Server)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:4567, CTRL+C to stop
> HTTP Methods
Static Files and Views
Routing and Parameters
Configuration and Error Handling
Helpers and Filters
Middleware and Testing
Gang Vocals
get '/' do
# Also creates a HEAD handler
"Gettin' somethin'..."
end
post '/' do
"Creatin' somethin'..."
end
put '/' do
"Updatin' somethin'..."
end
delete '/' do
"Deletin' somethin'..."
end
HTTP Methods
> Static Files and Views
Routing and Parameters
Configuration and Error Handling
Helpers and Filters
Middleware and Testing
Gang Vocals
require 'haml'
get '/' do
haml(:index) # renders 'views/index.haml'
end
get '/style.css' do
sass(:style) # renders 'views/style.sass'
end
require 'erb'
get '/' do
erb(:index)
end
require 'erubis'
get '/' do
erubis(:index)
end
require 'builder'
get '/' do
builder(:index)
end
HTTP Methods
Static Files and Views
> Routing and Parameters
Configuration and Error Handling
Helpers and Filters
Middleware and Testing
Gang Vocals
get '/archive/:year/:month/:day/:slug' do |year, month, day, slug|
@post = Post.find(...)
haml(:post, :locals => { :post => @post })
end
get %r|/(\d{4})/(\d{2})/(\d{2})/([\w\d\-+ ]+)| do |year, month, day, slug|
@post = Post.find(...)
haml(:post, :locals => { :post => @post })
end
HTTP Methods
Static Files and Views
Routing and Parameters
> Configuration and Error Handling
Helpers and Filters
Middleware and Testing
Gang Vocals
set(:cache_time, 600) # we'll access this later
disable(:caching) # same as 'set(:caching, false)'
not_found do
haml(:not_found)
end
configure :production do
error do
'My bad...'
end
enable(:caching)
end
HTTP Methods
Static Files and Views
Routing and Parameters
Configuration and Error Handling
> Helpers and Filters
Middleware and Testing
Gang Vocals
helpers do
def gravatar_url(email, size = 120)
digest = Digest::MD5.hexdigest(email)
"http://www.gravatar.com/avatar/#{digest}.png?s=#{size}"
end
include BrassSectionHelpers
end
configure :production do
before do
expires(options.cache_time)
end
end
HTTP Methods
Static Files and Views
Routing and Parameters
Configuration and Error Handling
Helpers and Filters
> Middleware and Testing
Gang Vocals
use Rack::Etag
Request → Etag Middleware → Application
require 'app'
require 'rack/test'
class MyAppTest < Test::Unit::TestCase
include Rack::Test::Methods
def app
Sinatra::Application
end
def test_hello_world
get '/'
assert_equal 'Hello World!', last_response.body
end
end
require File.dirname(__FILE__) + '/spec_helper'
describe 'My App' do
include Rack::Test::Methods
def app
@app ||= Sinatra::Application
end
it 'should say hello world' do
get '/'
last_response.should be_ok
last_response.body.should == 'Hello, World!'
end
end