Hidden features in ActiveRecord and the future

THE HIDDEN FEATURES OF

ACTIVE-RECORDAnd the Future…..

- Tejas Bubane

@tejasbubane

1. ENUMS 2. OPTIMISTIC LOCKING

3. DIRTY TRACKINGAnd the Future of course….

ENUMS

ENUMS

LOCKING

1. Optimistic Locking - Application Level

2. Pessimistic Locking - Database Level

OPTIMISTIC LOCKING

DIRTY TRACKINGActiveModel::Dirty tracks changes in a Model

DIRTY TRACKING

FUTURE

Rails 5 !!! 🎉

#OR OPERATOR

PR: https://github.com/rails/rails/pull/16052

Post.where(title: "Tuesday Talk").or(Post.where(title: "Wednesday Talk")

#HAS_SECURE_TOKENSimilar to #has_secure_password

PR: https://github.com/rails/rails/pull/18217

#BELONGS_TO REQUIREDSimilar to #has_secure_password

PR: https://github.com/rails/rails/pull/18937

QUESTIONS ?

REFERENCES1. 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

THANK YOU 😊