Investigating with Proof|Wandering Ruby

 # Gemfile

. treasure' paper_trail'

#
Terminal 
. rails g papertrail: mount

. rails db: move

 # config/initializers/paper _ trail.rb

. PaperTrail.config.track _ organizations = incorrect

. PaperTrail.config.version _ limitation = 3

. PaperTrail.serializer = PaperTrail:: Serializers:: JSON

.

. PaperTrail:: Version.class _ eval do

. def changed_object 
. @changed_object|| = JSON.parse( self.object, object_class: OpenStruct)

.
end 
.
end(* )# user.rb 
. course Customer < ApplicationRecord 
.
has_paper_trail on: 

, just: [:update, :destroy]

. end[:first_name, :last_name]<# show.html.erb 
.

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.


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 < solid > Given Name:


 
. <

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.

  # application_controller. rb 
. course ApplicationController < ActionController:: Base 
. protect_from_forgery with:: exemption 
.

before_action:
set_paper_trail_whodunnit 
. 
. def user_for_paper_trail 
.
 # user_signed_in?? current_user. id: 'Public customer'

.

' Public customer' 
. end 
.

end # routes.rb 
. Rails.application.routes.draw do

. sources: customers do

.

obtain: rollback


. end 
.

origin to:' customers #index' 
.

end  # users_controller.

rb 
. def rollback 
.

@user = User.find( params)

. variation = @user. versions.find( params
)


. if version.reify.save 
. redirect_to @user, notification: 'Customer was effectively rollbacked.'

.

else 
.

provide: program 
.

end 
.

end .