AASMMermaid

Generate Mermaid diagrams from AASM state machines.

Add this line to your application's Gemfile:

gem 'aasm_mermaid'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install aasm_mermaid

for an example AASM:

class TestAASMParentClass
  include AASM

  aasm do
    state :sleeping, initial: true
    state :running, :cleaning

    event :run do
      transitions from: :sleeping, to: :running
    end

    event :clean do
      transitions from: :running, to: :cleaning
    end

    event :sleep do
      transitions from: %i[running cleaning], to: :sleeping
    end

    event :procrastinate do
      transitions to: :sleeping
    end
  end
end

generate the diagram with:

AASMMermaid.generate_diagram_for(aasm: TestAASMParentClass.aasm)

result (rendered by github):

stateDiagram-v2
  sleeping --> running : run
  running --> cleaning : clean
  running --> sleeping : sleep
  cleaning --> sleeping : sleep
  sleeping --> sleeping : procrastinate
  running --> sleeping : procrastinate
  cleaning --> sleeping : procrastinate

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.

Bug reports and pull requests are welcome on GitHub at https://github.com/iiwo/aasm_mermaid. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

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

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