Overview

About workflow_on_mongoid

workflow_on_mongoid lets you use the Workflow gem with your Mongoid documents to add state machine functionality.

How to use it

In your Gemfile, instead of

gem 'workflow'

gem 'workflow_on_mongoid'

That is all. Now you can use Workflow with your Mongoid documents. Of course, you can still continue to use Workflow with ActiveRecord, Remodel and plain objects. All that workflow_on_mongoid does is to add Mongoid support. You can use all the features of Workflow with Mongoid models, including reflection of events & states, transition hooks, support for inherited models, etc. Just refer to the Workflow docs.

Versioning

The version numbers of workflow_on_mongoid track the latest supported version of Workflow . The major version number (x.x.x) matches the latest supported version of the Workflow gem, while the minor version number (0.7.0.y) tracks changes to workflow_on_mongoid itself.

Example

class MongoidImage
  include Mongoid::Document

  field :title
  field :status

  include Workflow    # Note this *must* occur after at least one
                      # Mongoid::* include, otherwise your status will not be persisted.

  workflow_column :status

  workflow do
    state :unconverted do
      event :convert, :transitions_to => :converted
    end
    state :converted
  end
end

See the tests for Mongoid for more examples. Do ensure your include Workflow line occurs after at least one Mongoid::Include line.

Tests

I’ve included all the tests from the original workflow gem and added comprehensive tests for Mongoid support, which is now as well-tested as ActiveRecord support. Including the existing tests ensures that workflow_on_mongoid implements support for Mongoid documents without breaking anything.

Project Info

workflow_on_mongoid is hosted on Github: github.com/bowsersenior/workflow_on_mongoid . It’s a tiny project, but your contributions, forkings, comments and feedback are definitely appreciated.

Contributors

Special thanks to:

Guilherme Cirne (github.com/gcirne)
Dariusz Gertych (github.com/chytreg)
David Butler (github.com/dwbutler)