Dealing with Decorators

Ref: action_policy#7.

Since Action Policy lookup mechanism relies on the target record's class properties (names, methods) it could break when using with decorators.

To make authorize! and other behaviour methods work seamlessly with decorated objects, you might want to enhance the policy_for method.

For example, when using the Draper gem:

module ActionPolicy
  module Draper
    def policy_for(record:, **opts)
      # From https://github.com/GoodMeasuresLLC/draper-cancancan/blob/master/lib/draper/cancancan.rb
      record = record.model while record.is_a?(::Draper::Decorator)
      super(record: record, **opts)
    end
  end
end

class ApplicationController < ActionController::Base
  prepend ActionPolicy::Draper
end