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Rails3
step off of
the golden path
RailsConf2009 - matt aimonetti
Wednesday, May 6, 2009
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WHO AM I?
m a t t a i m o n e t t i
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
Ted Han
Wednesday, May 6, 2009
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
Ted Han
Ruby Addict
Wednesday, May 6, 2009
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
Ted Han
Merb
Ruby Addict
Wednesday, May 6, 2009
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
Ted Han
Merb Rails
Ruby Addict
Wednesday, May 6, 2009
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WHO AM I?
m a t t a i m o n e t t i
“morally loose, cheese eating surrender monkey”
Ted Han
Merb Rails
MacRuby
Ruby Addict
Wednesday, May 6, 2009
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Rails3
step off of
the golden path
RailsConf2009 - matt aimonetti
Wednesday, May 6, 2009
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MERGE
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RUBY
oscon 2003
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RUBY
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RUBY
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RUBY
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RUBY ON RAILS
Convention over Configuration
Don't repeat yourself
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LARGE ADOPTION
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SCHISM
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Performance
Agnosticism
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Adobe
Wikimedia
sproutcore/Apple
AT&T/yellowpages.com
powerset/microsoft
...
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SPLIT RUBY COMMUNITY
...
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DRAMA
...
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SAT DOWN & TALKED
...
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DIFFERENT PERSPECTIVES
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SAME GOAL
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MERGE
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WHAT DO YOU GET?
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vaporware
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WHAT ARE YOU GOING TO
GET
improved
performance
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WHAT ARE YOU GOING TO
GET
increased modularity
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WHAT ARE YOU GOING TO
GET
agnosticism
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WHAT ARE YOU GOING TO
GET
public API
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WHAT ARE YOU GOING TO
GET
mountable apps
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WHAT DOES IT REALLY
MEAN?
Rails 2
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WHAT DOES IT REALLY
MEAN?
Rails 3
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CECI N’EST PAS LA RÉALITÉ
Rails 2
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
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CECI N’EST PAS LA RÉALITÉ
Rails 2
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ERB
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CECI N’EST PAS LA RÉALITÉ
Rails 2
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ERB
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CECI N’EST PAS LA RÉALITÉ
Rails 2
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ActiveRecord
ERB
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CECI N’EST PAS LA RÉALITÉ
Rails 2
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ActiveRecord
Test::Unit
ERB
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RAILS 3 DEFAULT STACK
• ORM: ActiveRecord
• JS: Prototype
• Templating: ERB
• Testing: Test::Unit
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RAILS 3 - DEFAULT STACK
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
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RAILS 3 - DEFAULT STACK
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ERB
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RAILS 3 - DEFAULT STACK
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ERB
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RAILS 3 - DEFAULT STACK
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ActiveRecord
ERB
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RAILS 3 - DEFAULT STACK
assert_equal(true, AwesomeApp.success?)
html, xml, json, js
ActiveRecord
Test::Unit
ERB
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WHAAAT?
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NO DRASTIC CHANGES FOR
THE END USERS
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RAILS WAY
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RAILS WAYS
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GAIN FLEXIBILTY
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LESS OPINIONATED
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WE ARE NOT ALL THE SAME
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¿WHEN?
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Use default stack?
Rails 3 default stack
Is there a
reason not
to use it?
Y
is it a
question of
taste?
Use the default stack
and stop overthinking
things
N
Y
is it worth it?
Rails 3 custom stack
evaluate your requirements:
templating, JS, ORM,
Performance
N
N
Y is it worth it?
Y
N
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OPTIONS
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JAVASCRIPT FRAMEWORKS
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TEMPLATING ENGINES
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OBJECT RELATION MAPPER
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Databases
Object Oriented
Languages
scalar values
objects
data
ORM
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RAW SQL
SELECT *
FROM Book
WHERE price > 100.00
ORDER BY title;
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ACTIVERECORD
Book.all \
:conditions => ["price > ?", 100.00],
:order => 'title'
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DATAMAPPER
Book.all \
:price.gt => 100.00,
:order => [:title.asc]
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SEQUEL
Book.find{|b| b.price > 100.00}.order(:title)
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COUCHREST
Book.by_price(:startkey => 100.01)
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MANY MORE ORMS/DSLS
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RUBY IS AWESOME
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DATAMAPPER
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DATAMAPPER
@parent = Parent.find_by_name("Matt")
@parent.children.each do |child|
@parent.object_id.should == child.parent.object_id
end
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DATAMAPPER
@parent = Parent.find_by_name("Matt")
@parent.children.each do |child|
@parent.object_id.should == child.parent.object_id
end
Fails with ActiceRecord
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DATAMAPPER
@parent = Parent.find_by_name("Matt")
@parent.children.each do |child|
@parent.object_id.should == child.parent.object_id
end
Fails with ActiceRecord
Passes with DataMapper
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DATAMAPPER
does what ActiveRecord does...
but differently
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DATAMAPPER
db drivers using 1 unified interface
Copyright - Merb in Action - Manning
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DATAMAPPER
• procrastination as a value
• Lazy Loading
• Strategic Eager Loader
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DATAMAPPER
students = Student.all
students.each do |student|
student.books.map{|b| b.name}
end
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ACTIVERECORD
SELECT * FROM "students"
SELECT * FROM "books" WHERE
("books".student_id = 1)
SELECT * FROM "books" WHERE
("books".student_id = 2)
SELECT * FROM "books" WHERE
("books".student_id = 3)
SELECT * FROM "books" WHERE
("books".student_id = X)
students = Student.all
students.each do |student|
student.books.map{|b| b.name}
end
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DATAMAPPER
students = Student.all
students.each do |student|
student.books.map{|b| b.name}
end
SELECT "id", "name" FROM "students" ORDER BY "id"
SELECT "id", "name", "student_id" FROM "books" WHERE
("student_id" IN (1, 2, 3, X)) ORDER BY "id"
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MULTIPLE REPOS
production:
adapter: mysql
encoding: utf8
database: production-app
username: root
password: top-s3ckrit
host: localhost
repositories:
nightly_backup:
adapter: sqlite3
database: shared/nightly.db
weekly_backup:
adapter: sqlite3
database: shared/weekly.db
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MULTIPLE REPOS
Article.copy(:default, :nightly_backup,
:created.gt => 1.day.ago )
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MULTIPLE REPOS
class Page
include DataMapper::Resource
property :id, Serial
property :name, String
repository(:legacy) do
property :name, String,
:field => "title"
end
end
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QUERY::PATH
Person.all("addresses.street.like" =>
"%street%" )
SELECT "people"."id", "people"."name" FROM "people"
INNER JOIN "addresses" ON ("people"."id" = "addresses"."person_id")
WHERE ("addresses"."street" LIKE '%street%')
ORDER BY "people"."id"
Find all people
with an address that
has street in the street name
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ADAPTERS
RDBMS
file system
IMAP
Sales Force
YAML
REST APIs
custom APIs
...
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SEQUEL
• Prepared Statements
• Sharding
• highly customizable SQL work
• high performance
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HIBERNATE
• ActionORM
• JRuby
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NON RDBMS SYSTEMS
• AppEngine::Datastore
• CouchDB with CouchRest or other DSL
• Redis, Tokyo Cabinet etc...
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RAILS EXTREME
only for a few of you
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CUSTOMIZE RAILS TO THE
EXTREME
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CREATE YOUR OWN RAILS
• define your own file structure
• define your own router DSL
• define your own ways to deal with requests
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EXTEND
ACTIONCONTROLER
class Presentation < ActionController::Http
def index
self.response_body = "Rails3 + MacRuby"
end
end
Presentation.action(:index).call \
Rack::MockRequest.env_for("/railsconf10")
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EXTEND
ACTIONCONTROLER
def action(&blk)
Class.new(ActionController::Http) do
include ActionController::Renderer
define_method(:xtreme, &blk)
end.action(:xtreme)
end
run action do
render "some_template"
end
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¿FUTURE?
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+
+
C o u c h D B
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credits:
http://www.flickr.com/photos/dotdoubledot/
Katsushika Hokusai
Delacroix
Benetton
http://www.rubyist.net/~matz/slides/oscon2003
Matt Groening
http://www.flickr.com/photos/derricksphotos/
http://www.flickr.com/photos/bogdansuditu
http://www.flickr.com/photos/77096872@N00/2547160291/
http://www.flickr.com/photos/edvvc/1972546648/
http://www.flickr.com/photos/amagill/34762677/
http://www.flickr.com/photos/celinesphotographer/360918623/
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Thanks
Heidi Vega
Rails team
Yehuda Katz
Carl Lerche
Laurent Sansonetti
Rich Kilmer
Ninh Hernandez Bui
Hongli not-so-MacLovin’ Lai
Dan Kubb
Wednesday, May 6, 2009