Ckeditor Custom Authorization Hook

config_inititializers_ckeditor.rb

Ckeditor.setup do |config|
    config.current_user_method  do
        current_user
    end
    config.authorize_with :chronus
 end

lib_ckeditor_hooks_chronus.rb

module Ckeditor
  module Hooks
    class ChronusAuthorization

      include Ckeditor::Helpers::Controllers

      def initialize(controller)
        @controller = controller
        @controller.extend ControllerExtension
      end

     def authorize(action, model_object = nil)
        raise Authorization::PermissionDenied unless authorized?(action, model_object)
      end

      def authorized?(action, model_object = nil)
        if action
          if @controller.current_user_for_chronus.is_admin?
            [:index, :create, :destroy].include? action
          else
            [:create].include? action
          end
        end
      end

      private

      module ControllerExtension
        def current_user_for_chronus
          ckeditor_current_user
        end
      end
    end
  end
end

Ckeditor::AUTHORIZATION_ADAPTERS[:chronus] = Ckeditor::Hooks::ChronusAuthorization