Welcome to memoar! A simple versioning gem for ActiveRecord models using a JSON column.

Add this line to your application's Gemfile:

gem 'memoar'

And then execute:

bundle install

Or install it yourself as:

gem install memoar

1. Generate a migration to add the version_log column to your model:

rails generate memoar:install ModelName

2. Run the migration:

rails db:migrate

3. In your ActiveRecord model, specify fields to track:

class Article < ApplicationRecord
  track_changes_to :title, :content
end

or with limit of recorded changes (default 50):

class Article < ApplicationRecord
  track_changes_to :title, :content, limit: 10
end

article.previous_versions

Bug reports and pull requests are welcome on GitHub at https://github.com/amigobg/memoar.

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