rails ya soportaba deshabilitar durante el envío

app/javascript/controllers/submit_once_controller.js

@@ -1,15 +0,0 @@
-import { Controller } from 'stimulus'
-
-/*
- * Deshabilita el elemento que recibe el evento, para evitar que la
- * acción se realice varias veces.
- *
- * <form data-controller="submit-once">
- *   <input type="submit" data-action="submit-once#disable" />
- * </form>
- */
-export default class extends Controller {
-  disable (event) {
-    event.target.disabled = true
-  }
-}

app/views/sites/_build.haml

@@ -1,18 +1,9 @@
 - if policy(site).build?
-  - if site.enqueued?
-    = render 'layouts/btn_with_tooltip',
-      tooltip: t('help.sites.enqueued'),
-      text: t('sites.enqueued'),
-      type: 'secondary',
-      link: nil,
-      disabled: true
-  - else
-    = form_tag site_enqueue_path(site),
-      method: :post,
-      data: { controller: 'submit-once' },
-      class: 'form-inline inline' do
-      = button_tag type: 'submit',
-        class: 'btn no-border-radius',
-        title: t('help.sites.enqueue'),
-        data: { action: 'submit-once#disable' } do
-        = t('sites.enqueue')
+  = form_tag site_enqueue_path(site),
+    method: :post,
+    class: 'form-inline inline' do
+    = submit_tag site.enqueued? ? t('sites.enqueued') : t('sites.enqueue'),
+      class: 'btn no-border-radius',
+      title: site.enqueued? ? t('help.sites.enqueued') : t('help.sites.enqueue'),
+      data: { disable_with: t('sites.enqueued') },
+      disabled: site.enqueued?