easy-going-rails/app/views/layouts/_notification.html.erb

<h2>NOTIFICATION BAR</h2>
<script data-turbo-temporary>
  document.addEventListener('turbo:load',(e)=>{

    const notyf=window.buildNotyf()
    notyf.success('rails notice')
    notyf.error('rails alert')

    // useful to prevent flickering from turbo preview
    Turbo.cache.exemptPageFromPreview()

  }, {once: true})
</script>