reflections

Reflections

Given an ActiveRecord object, it re-maps relationships to another object of the same class. Useful for reconciling database with accounts for same user, etc.

Installation

Add this line to your application's Gemfile:

gem 'reflections'

And then execute:

$ bundle

Or install it yourself as:

$ gem install reflections

Usage

user1 = User.create

user2 = User.create

Widget.create user: user1

OtherClass.create user: user1

user1.map_associations_to user2

you can optionally control the associations

user1.map_associations_to(user2, types: %w(belongs_to has_and_belongs_to_many))

you can optionally control the updating of the associations
or create reports by passing a block

user1.map_associations_to(user2) do |record, association|
  puts "Remapping #{association.macro} for #{record} from #{user1} to #{user2}"
  false # don't actually do update
end

you can also control the classes remapped with :only and :exclude

user1.map_associations_to(user2, only: [Widget])

user1.map_associations_to(user2, except: [OtherClass])

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request