Rails 4: Appetizers - Speaker Deck

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Rails 4: Appetizers @jwo for @houstonrb Wednesday, July 10, 13

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Rubies Ruby 1.9.3 at least, prefer 2.0 Rails 2.3 => End of Life Ruby 1.8.7 => End of Life Wednesday, July 10, 13

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Bootup time faster on Ruby 2.0 with Rails 4 How fast? Cray Cray Faster Wednesday, July 10, 13

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Cache Digests Caches the view (partials) by the updated_at column Wednesday, July 10, 13

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Best if you have a upper-most site object. Example: Basecamp has an upper-most Account object. Cache Digests Wednesday, July 10, 13

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So: Add a Site object that has upper-most updated at. Cache Digests Wednesday, July 10, 13

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Will help with sidebar that does not directly belong to a Post. Cache Digests Wednesday, July 10, 13

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Uses JavaScript to pull only the tag Turbolinks Wednesday, July 10, 13

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Speeds up document based sites Turbolinks Wednesday, July 10, 13

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Most everybody should add jquery-turbolinks Turbolinks Wednesday, July 10, 13

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Watch out for: Turbolinks Wednesday, July 10, 13

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External javascript (stripe) Data tags on the body object things in the `` like `` tags Tubolinks Wednesday, July 10, 13

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Most everything, ever Wednesday, July 10, 13

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Moves Mass Assignment protection to the controllers Strong Parameters Wednesday, July 10, 13

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you have to manually remove attr_accessible if upgrading Strong Parameters Wednesday, July 10, 13

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PostgreSQL Additions hstore: JSON store, attributes, better Single Table Inheritance Wednesday, July 10, 13

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PostgreSQL Additions Arrays: tagging, parent child ancestry Wednesday, July 10, 13

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Arel Changes find_by_customer_id => lives! find(:all, conditions: ["customer_id = ?", 45]) => DEAD find(customer_id: 45) => new Wednesday, July 10, 13

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Arel Changes ﬁnd_or_create_by_customer_id() => dead ﬁnd_or_create_by(customer_id: 45) => new! Wednesday, July 10, 13

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Arel Changes where(id: 45).ﬁrst_or_create => new hotness .all => deprecated Wednesday, July 10, 13

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Scope Changes scope :future, where("created_at > ?", Time.now) => syntax error Wednesday, July 10, 13

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Scope Changes scope :future, → { where("created_at > ?", Time.now) } Wednesday, July 10, 13

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MultiThreaded It's on, baby! Wednesday, July 10, 13

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Moved to Gems Observers ActiveRecord SessionStore ActiveResource LOL Action & Page Caching Wednesday, July 10, 13

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Test Directories test/unit => test/models test/functional => test/ controllers Wednesday, July 10, 13

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Misc Gemﬁle has no Assets section Concerns directory is prevalent Wednesday, July 10, 13

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Misc /bin shows up (binstubs) Plugins must be moved to lib Wednesday, July 10, 13

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Misc ActionController::Live => (not alot of attention) Patch verb in REST Wednesday, July 10, 13

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Misc before_ﬁlters are now before_action Wednesday, July 10, 13

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Didn't Make it Queue API Async Mailers Wednesday, July 10, 13

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get more information http:/ /blog.wyeworks.com/ Rails Conf 2013 Postgres, the Best Tool You're Already Using Wednesday, July 10, 13

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get more information http:/ /rails-upgrade- checklist.com http:/ /upgradingtorails4.com http:/ /upgradingrails.com Wednesday, July 10, 13

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Thanks! I’m @jwo Wednesday, July 10, 13