discourse/lib/screening_model.rb

module ScreeningModel
  extend ActiveSupport::Concern

  module ClassMethods
    def actions
      @actions ||= Enum.new(:block, :do_nothing)
    end

    def default_action(action_key)
      @default_action = action_key
    end

    def df_action
      @default_action || :do_nothing
    end
  end

  included do
    before_validation :set_default_action
  end

  def set_default_action
    self.action_type ||= self.class.actions[self.class.df_action]
  end

  def record_match!
    self.match_count += 1
    self.last_match_at = Time.zone.now
    save
  end
end