1. Identify Your JavaScript Setup:
- Importmap: Look for config/importmap.rb. Add JavaScript to app/javascript/application.js.
- esbuild or Webpack: Look for package.json. JavaScript goes in app/javascript/application.js.
2. Set Up JavaScript (if missing):
- For Importmap: Run rails importmap:install.
- For esbuild: Run rails javascript:install:esbuild.
- For Webpacker: Run rails webpacker:install.
Include JavaScript in Layout:
Add this to application.html.erb:
<%= javascript_importmap_tags %> <!-- For Importmap --> or <%= javascript_include_tag "application", defer: true %> <!-- For esbuild/Webpacker -->
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