class Task < ApplicationRecord include AASM aasm column: :status do state :waiting, initial: true state :in_progress, :pending, :finished event :start do transitions from: :waiting, to: :in_progress transitions from: :pending, to: :in_progress end event :stop do transitions from: :in_progress, to: :pending end event :finish do transitions from: :in_progress, to: :finished end end end

aasm = AasmParser.parse_file('./task.rb') aasm.initial_state # => :waiting aasm.state_names # => [:waiting, :in_progress, :pending, :finished] aasm.events.map(&:name) # => [:start, :stop, :finish] aasm.events.flat_map(&:transitions).map { |e| "#{e.from} => #{e.to}" } # => ["waiting => in_progress", "pending => in_progress", "in_progress => pending", "in_progress => finished"]