ActionText: Use preloaded ActiveStorage attachments

action_text_initializer.rb

Rails.application.config.after_initialize do

  ActiveSupport.on_load(:action_text_content) do
    class_eval do
      attr_accessor :rich_text

      def attachment_for_node(node, with_full_attributes: true)
        attachment = ActionText::Attachment.from_node(node, rich_text&.find_preloaded_attachable(node))
        with_full_attributes ? attachment.with_full_attributes : attachment
      end
    end
  end

  
  ActiveSupport.on_load(:action_text_rich_text) do
    class_eval do
      def body
        super.tap{|body|
          body.rich_text = self if body
        }
      end

      def find_preloaded_attachable(node)
        global_id = SignedGlobalID.parse(node['sgid'], for: ActionText::Attachable::LOCATOR_NAME)
        return unless global_id.model_class == ActiveStorage::Blob && self.embeds.loaded?
        self.embeds.detect{|embed|
          embed.blob_id.to_s == global_id.model_id
        }&.blob
      end

    end
  end
  
end