Events as constants (same as state)

[bwillis]

When getting started with aasm we found the state constants really useful, but felt like we were missing them for events. Has this been considered before or does anyone else think it would be useful?

[anilmaurya]

I am not sure if events constants are really useful for others. Can you share some code snippets where you found that events constants are useful.

[bwillis]

Mostly it's been in specs when invoking a state change through an indirect interface:

# Class snippet
class AasmObject
  include AASM
  EVENTS = [
    EVENT_DO_THE_THING,
  ].freeze
end

# Spec snippet
let(:event) { AasmObject::EVENT_DO_THE_THING }
subject(:run_event) { put :update, params: { event: event } }

it do
  expect { run_event }
  .to change { aasm_object.reload.state.to_sym }
  .from(AasmObject::STATE_INITIAL)
  .to(AasmObject::STATE_THING_DONE)
end