In my project, I was asked to keep track of changes in records. I found PaperTrails gem, and its found to be pretty useful.
But it lacks a straightforward feature to know the fields changed in that particular version. Then I thought to write custom event name so that I could grep the field_name I wish to check.
# == Schema Information # # Table name: tasks # # id :integer not null, primary key # worker_id :integer # customer_id :integer # kind :integer default(0) # status :integer default(0) # note :text # start_on :datetime # complete_on :datetime # started_on :datetime # completed_on :datetime # created_at :datetime not null # updated_at :datetime not null # driver_acceptance :integer default(0) # refuel_id :integer # shift_id :integer # class Task < ActiveRecord::Base include Timeable has_paper_trail # Update event-name on update before_save :paper_trail_events, on: :update enum status: { scheduled: 0, started: 1, skipped: 2, completed: 3, paused: 4, rescheduled: 5 } enum kind: { inter_location: 0, refuel: 1, break: 2 } enum driver_acceptance: { pending: 0, accepted: 1, rejected: 2, sent: 3 } private def paper_trail_events changed_fields = self.changes.keys - ['created_at', 'updated_at'] self.paper_trail_event = "Updated #{changed_fields.join(',')}" end end
In Rails Console
> Task.find(1768).versions.map &:event => ["Updated start_on,complete_on,status", "Updated worker_id"]
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