ActionController::Live
Action Controller Live Mix this module into your controller, and all actions in that controller will be able to stream data to the client as it’s written. class MyController < ActionController::Base include ActionController::Live def stream response.headers['Content-Type'] = 'text/event-stream' 100.times { response.stream.write "hello world\n" sleep 1 } ensure response.stream.close end end There a
ActiveRecord::Locking::Pessimistic
Ruby on Rails 7.1.2 Module ActiveRecord::Locking::Pessimistic activerecord/lib/active_record/locking/pessimistic.rb Pessimistic Locking Locking::Pessimistic provides support for row-level locking using SELECT … FOR UPDATE and other lock types. Chain ActiveRecord::Base#find to ActiveRecord::QueryMethods#lock to obtain an exclusive lock on the selected rows: # select * from accounts where id=1 for u
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ActiveRecord::Callbacks
