dalek

The exterminator of application records. #GDPR

Installation

gem install dalek

But not yet! To be uploaded...

Usage

Describing the deletions as a data structure

class DeleteUser < Dalek
  deletion_tree 'User', {
    _before: ->(users) { users.none(&:active?) },
    posts: {
      comments: {commented_posts: :delete},
    },
    comments: :delete,
    avatars: ->(avatars) { avatars.update!(user_id: nil, image: nil) },
  }
end

Extermination

  user = User.find_by doomed: true

  DeleteUser.execute user # => true/false result, paraphrased Ta-da

Related materials

http://nithinbekal.com/posts/ruby-tco/ https://robots.thoughtbot.com/referential-integrity-with-foreign-keys