gistfile1.rb

# I used to do this with Rabl
class BaseController < ApplicationController
  before_filter @load_active_distributors
  
  def load_active_distributors
    # RABL template uses this
    @active_distributors ||= Enterprise.distributors_with_active_order_cycles
  end
end

# I want to do something similar with ActiveModelSerializers
class Api::EnterpriseSerializer < ActiveModel::Serializer
  attributes :active
  
  def active
    @active_distributors.include? object
end