YARD plugin for Dry::Initializer

The [dry-initializer] gem is awesome. It makes defining dependencies of your classes so convenient and declarative.

But when you're using these classses, how to get know which positional arguments does it expect and in which order and which keyword ones?

It's easy (but bother) to look into source code, but in case of using inheritance it will be very cumbersome.

This YARD plugin to the rescue!

Sponsored by Evil Martians

Write this:

class Base
  extend Dry::Initializer

  param :account,                       comment: "End user account on behalf of which all actions are done"
  option :force, default: -> { false }, comment: "Execute action regardless of pre-checks result"

class ProcessSubject < Base
  param :subject
  option :filter, comment: "Callable object, given +subject+ will allow processing if returns true"
  option :force,  default: -> { true }

And you will get this:

Example of generated docs for ProcessSubject class


Add this line to your application's Gemfile:

gem 'yard-dry-initializer'

And then execute:

$ bundle

Add this line in your .yardopts:

--plugin dry-initializer


Use YARD as usual, enjoy new info in your docs.

If you're getting [error]: Error loading plugin 'yard-dry-initializer' error you may need to invoke yard via bundle exec or generate binstubs for it.


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.


Bug reports and pull requests are welcome on GitHub at https://github.com/Envek/yard-dry-initializer.


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