deshabilitar el botón de publicación una vez que se lo toca

app/javascript/controllers/submit_once_controller.js

@@ -0,0 +1,15 @@
+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

@@ -4,12 +4,15 @@
       tooltip: t('help.sites.enqueued'),
       text: t('sites.enqueued'),
       type: 'secondary',
-      link: nil
+      link: nil,
+      disabled: true
   - else
     = form_tag site_enqueue_path(site),
-      method: :post, class: 'form-inline inline' do
+      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: { toggle: 'tooltip' } do
+        data: { action: 'submit-once#disable' } do
         = t('sites.enqueue')