Add status to EventRegistration

[maebeale]

STATUSES = [
requested,
approved,
declined,
paid,
cancelled,
attended,
no_show
]

[maebeale]

starting to think about managing event registrations.

not sure if this complex a state machine is the best first cut. but we def need requested, approved, declined, cancelled.

prob should use AASM

[maebeale]

maybe this?

class EventRegistration < ApplicationRecord
  include AASM

  aasm column: :status do
    state :requested, initial: true
    state :approved
    state :declined
    state :paid
    state :cancelled
    state :attended
    state :no_show

    event :approve do
      transitions from: :requested, to: :approved
    end

    event :decline do
      transitions from: :requested, to: :declined
    end

    event :pay do
      transitions from: :approved, to: :paid
    end

    event :cancel do
      transitions from: [:approved, :paid], to: :cancelled
    end

    event :check_in do
      transitions from: :paid, to: :attended
    end

    event :mark_no_show do
      transitions from: :paid, to: :no_show
    end
  end
end