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THE HIDDEN FEATURES OF ACTIVE-RECORD And the Future….. - Tejas Bubane @tejasbubane

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1. ENUMS 2. OPTIMISTIC LOCKING 3. DIRTY TRACKING And the Future of course….

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ENUMS

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ENUMS

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LOCKING 1. Optimistic Locking - Application Level 2. Pessimistic Locking - Database Level

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OPTIMISTIC LOCKING

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DIRTY TRACKING ActiveModel::Dirty tracks changes in a Model

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DIRTY TRACKING

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FUTURE Rails 5 !!!

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#OR OPERATOR PR: https://github.com/rails/rails/pull/16052 Post.where(title: "Tuesday Talk").or(Post.where(title: "Wednesday Talk")

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#HAS_SECURE_TOKEN Similar to #has_secure_password PR: https://github.com/rails/rails/pull/18217

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#BELONGS_TO REQUIRED Similar to #has_secure_password PR: https://github.com/rails/rails/pull/18937

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QUESTIONS ?

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REFERENCES 1. ENUM: http://edgeapi.rubyonrails.org/classes/ActiveRecord/Enum.html 2. Optimistic Locking: http://api.rubyonrails.org/classes/ActiveRecord/Locking/ Optimistic.html 3. Dirty Tracking: http://api.rubyonrails.org/classes/ActiveModel/Dirty.html 4. Future Rails 5: https://medium.com/evil-martians/the-rails-5-post-9c76dbac8fc

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THANK YOU