Polymorphic Resource Owner

Enables polymorphic Resource Owner feature for Doorkeeper Access Tokens & Grants. By default Doorkeeper set only resource_owner_id without knowing model name of the Resource Owner.

Feature available only starting from Doorkeeper 5.4.

How to use it

Enable configuration option:

config/initializers/doorkeeper.rb

Doorkeeper.configure do
  orm :active_record

  use_polymorphic_resource_owner
end

Generate migration to add polymorphic columns to tables:

$ bundle exec rails g doorkeeper:enable_polymorphic_resource_owner

If you previously set foreign key for :resource_owner_id column - you need to drop it as now it would be a polymorphic association. You can drop FK in the migration generated above.

Run the migration:

$ bundle exec rails db:migrate

Use the feature!

Now you can access resource owner by doorkeeper_token.resource_owner association.

:warning: :warning: [ATTENTION]: If you enabled this option on existing project - you need to manually set polymorphic type column with the class of the Resource Owner. Otherwise your existing users/clients could face issues and spam you logs with errors.

:warning: :warning: [ATTENTION]: Also this feature could be a breaking change for those users that patched Doorkeeper internals, specially models. You need to fix your patches to user resource_owner instance instead of it's ID (like it was before).

Known projects affected

• GitLab (https://gitlab.com/gitlab-org/gitlab-foss/blob/master/config/initializers/doorkeeper.rb#L129)
• Doorkeeper ORM extensions

Original PR: https://github.com/doorkeeper-gem/doorkeeper/pull/1355