customer_serializer.rb

customer_serializer.rb

 class CustomerSerializer < ActiveModel::Serializer
  attributes :id, :name, :email, :phone, :store_credit, :credit_card, :receive_daily_emails, :is_driver, :addresses

  def store_credit
    object.total_available_store_credit.to_f
  end

  def credit_card
    object.card_last_4
  end

  def is_driver
    object.is_driver?
  end

  def receive_daily_emails
    object.email_opt_in
  end

  def addresses
    []
  end

  def attributes
    hash = super
    hash["id"] = id.to_s
    hash
  end
end