如何将 StimulusJS 安装到 Ruby on Rails 应用程序？

Question

How do I install StimulusJS to a Ruby on Rails application?

The docs mention webpack and npm , but nothing about Rails or Yarn (at time of this writing).

(Kind of strange given that Stimulus comes from Basecamp, who literally created RoR...)

Answer 1

The answer, at least for Rails 6, is stunningly easy:

bundle exec rails webpacker:install:stimulus

That's it . That command will:

• invoke yarn to download and install StimulusJS
• add a line to app/javascript/packs/application.js to import javascript controllers
• add file app/javascript/controllers/index.js (to load/init all stimulus controllers)
• add a demo controller in app/javascript/controllers/hello_controller.js

From there, you can create a simple view to use the demo Hello controller, and with a little tweaking you can make it just like the demo on the StimulusJS.org home page.

Webpacker instructions for Stimulus are here: https://github.com/rails/webpacker#stimulus