RAILS by Arturas arturaz lajus http:arturaz'net

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RAILS?by Arturas arturaz lajushttp//arturaz
.net/
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• RAILS yra
• MVC DAO
• OOP
• DRY
• KISS
• frameworkas

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• app/
• controllers/
• models/
• views/
• config/
• db/

ir kitos direktorijos
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AppController-gtYourController
Models
View-gtLayout
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• Controllers lt ApplicationController
• ApplicationController lt ActionControllerBase

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Controllers

• params
• request
• session
• flash
• _at_foo, _at_bar

• filters
• before
• after
• around.
• caching

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MODELS lt ARBase

• AR
• ActiveRecord
• ActiveResource

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MODELS

• callbacks
• validation
• relationships
• transactions
• CRUD

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has_one
belongs_to
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has_many
belongs_to
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HABTM
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• VIEWS - .format.builder

Formats html js css rss
Builders erb builder haml markdown
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VIEWS

• _at_foo, _at_bar, _at_baz
• form_for, link_to,
• render
• yarr custom helpers!

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EXAMPLE
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• class IndexController lt ApplicationController
• def index
• _at_events Event.find(all,
• conditions gt "start gt NOW()",
• order gt "start, title",
• limit gt 5
• )
• end
• end

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• class Event lt ActiveRecordBase
• end

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• lt title "Naujausi ivykiai" gt
• lt _at_events.each do event gt
• lt link_to event.title, event_url(event) gt
• lt end gt

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• Live demo bus gale

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• Where did events_url come from?
• config/routes.rb

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• Pasakot ner ka.
• Smulkmenu daug, bet visu neiliesi.
• Integruotas prototype, scriptaculous, unit
  testingas.
• Pluginu sistema.
• Tiek.

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