Ce e nou in Rails 4
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Rails 4 was released in 2013 and introduced several new features including stronger security with strong parameters, default security headers, and encrypted cookies. It also improved caching with Russian Doll caching and declarative ETags. Under the hood, ActiveRecord was updated with lazy loading, scope deprecation, and new finder methods.
Ce e nou in Rails 4
- 1. Ce e nou in Rails 4 Florin Oltean Cluj.rb 2013-04-04
- 2. Cuprins • Rails 4 • Nou • Imbunatatit / schimbat • Extras
- 3. Rails 4.0 Beta 1 a fost lansat in 2013-02-25 a fost lansat in 2013-02-25
- 4. Nou in Rails 4
- 5. • Minim Ruby 1.9.3 • Preferat Ruby 2.0
- 6. Caching • Russian Doll Caching • Declarative ETags • turbolinks
- 7. Securitate • strong parameters • default headers • encrypted cookie
- 8. Strong parameters • Mutare logica din Model in Controller • nu ne mai incurca in locuri in care nu avem input de la user (consola, teste, etc.) • avem acces la ‘current_user’ • white-list • posibila problema cand accesam acelasi model din mai multe controllere (!DRY)
- 10. Default headers
- 11. Encrypted cookie • inainte era doar semnat cookie-ul • tot nu ar trebui sa pune date sensibile in cookie • sa punem o referinta si sa stocam server-side
- 12. • Suport pentru tipuri de date Postgres • hstore • array • MACADDR, INET, CIDR
- 13. • Live Streaming • push de la server pe conexiuni persistente • pe versiunile recente de browsere (mai putin IE)
- 14. • Metoda HTTP PATCH • Inlocuieste metoda PUT • Metoda PATCH trebuie folosita atunci cand in request nu se trimite resursa completa • PUT va mai functiona o vreme
- 15. • Form helper: date_field • Chrome • Safari
- 16. • application.rb • console do ... end
- 17. Schimbat in Rails 4
- 18. ActiveRecord • .all => lazy • .scope => deprecated • .all.to_a => incarca obiectele din BD
- 19. ActiveRecord • .where.not • Author.where.not(age: 21) • SELECT "authors".* FROM "authors" WHERE ("authors"."age" != 21)
- 20. ActiveRecord • .order(field: :direction) • Author.order(name: :desc) • SELECT "authors".* FROM "authors" ORDER BY "authors"."name" DESC
- 21. ActiveRecord • .find_by(name: "Tom") • era .find_by_name("Tom") • .find_or_create_by(name: "Tom") • era .find_or_create_by_name("Tom")
- 22. ActiveRecord • .scope :name, -> { where(...) } • deprecated: • .scope :name, where(...)
- 24. Organizare teste
- 25. • public/index.html generata intern • nu mai trebuie stearsa din aplicatiile noi
- 26. Rute • match => get, post, ... • concerns
- 27. • thread safe on by default (production) • config.eager_load = true • ex: http://puma.io/
- 28. Development • pagina de eroare imbunatatita
- 30. Extras din Rails 4
- 31. • Page and Action Caching • inlocuit cu Russian Doll Caching • Observers • rolul Observerilor era sa fie folositi pentru invalidarea cache-ului
- 32. • ActiveResource
- 33. • SessionStore
- 34. Ce nu a intrat in Rails 4 • Background Queueing • Asynchronous ActionMailer
- 36. Contact @florin555 florin555@gmail.com
- 37. ?