kanevk/dalek

The exterminator of application records

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

dalek's Issues

Handle has_many :through associations

Extend the deletion tree to find the right scope for has_many :through association.

Example

Model

class User
  has_many :commentators, through: :posts, source: :user
end

Deletion tree

module DeleteUser
  include Dalek::Exterminate

  deletion_tree 'User, {commentators: :delete}
end

Use inheritance instead of module inclusion of "Dalek::Exterminate"

Use inheritance, because the initialize method is implemented in Dalek::Exterminate.
Change Dalek::Exterminate from module to class.

Add DSL for the deletion

Add DSL feature for the deleting service.

Currently the deletions are described through the Dalek::Exterminate.deletion_tree method via data structure.

It will be nice to have DSL build over the deletion tree structure.

Example

class DeleteUser
  include Dalek::Exterminate
  
  delete User do
    before { ... }
    
    delete :posts do
      delete :comments

      after { ... }
    end

    delete :comments do
      skip :images
      delete :tags
    end
    
    handle(:avatars) { ... }
  end
end