A library to generate ruby class from openapi.yaml.

Add this line to your application's Gemfile:

gem 'openapi2ruby'

And then execute:

$ bundle

Or install it yourself as:

$ gem install openapi2ruby

You can generate ruby class from openapi.yaml (Now support OpenAPI Specification 3.0 only)

For example, you uses OpenAPI-Specification link-example schema.

# generate ruby class
$ openapi2ruby generate path/to/link-example.yaml --out ./

$ ls
pullrequest_serializer.rb repository_serializer.rb  user_serializer.rb

Generated class is below.
Default, this gem generates ActiveModel::Serializer class.

class RepositorySerializer < ActiveModel::Serializer
  attributes :slug, :owner

  def owner
    UserSerializer.new(object.user)
  end


  def slug
    type_check(:slug, [String])
    object.slug
  end

  private

  def type_check(name, types)
    raise "Field type is invalid. #{name}" unless types.include?(object.send(name).class)
  end
end

If you wants to generate from other template with ERB.
You can specify it with cli option.

Write original template.

class <%= @schema.name %>
  attr_accessor <%= @schema.properties.map{ |p| ":#{p.name}" }.join(', ') %>

  def intiialize(args)
    <%- @schema.properties.each do |p| -%>
    <%= "@#{p.name} = args[:#{p.name}]" %>
    <%- end -%>
  end
end

Generate with --template option.

$ openapi2ruby generate path/to/link-example.yaml \
  --template path/to/original_template.rb.erb \
  --out ./

class Repository
  attr_accessor :slug, :owner

  def intiialize(args)
    @slug = args[:slug]
    @owner = args[:owner]
  end
end

For more template value information, please check default template.

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/[USERNAME]/openapi2ruby. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

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

Everyone interacting in the Openapi2ruby project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.