As ActiveRecord provides you to get all the changes of your unsaved object, active_resource_changeable gem also serves the same purpose by calling its changes method.


Add this line to your application's Gemfile:

gem 'active_resource_changeable'

And then execute:

$ bundle

Or install it yourself as:

$ gem install active_resource_changeable


include ActiveResourceChangeable

into your model and then you can call changes method on its objects. For example.

class User < ActiveResource::Base = ""

  include ActiveResourceChangeable


user = User.find(1)
user.firstname = "Neeraj1"
user.lastname = "Kumar1" = ""
user.username = "neeraj1"

user.changes = {"firstname"=>["Neeraj", "Neeraj1"], "lastname"=>["Kumar", "Kumar1"], "username=>["neeraj", "neeraj1], "email"=>["", ""]}

ActiveResourceChangeable works for nested ActiveResource objects too and gives the result something like

{"companyName"=>["Skipped Levels 034", "ABC Company"],
 "address"=>{""=>{"line1"=>["1234 Skipped Levels 034", "line1"]}, "countryType"=>{"code"=>["DEU", "IND"]}},
 "countryType"=>{""=>{"code"=>["DEU", "IND"]}},
 "statusType"=>{""=>{"code"=>["A", "B"]}}}


After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.


Bug reports and pull requests are welcome on GitHub at This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.


The gem is available as open source under the terms of the MIT License.