uses default rails helper to disable submit button

app/views/officing/voters/_can_vote.html.erb

@@ -10,7 +10,9 @@
                         html: { id: "new_officing_voter" } do |f| %>
       <%= f.hidden_field :poll_id, value: poll.id %>
       <%= f.hidden_field :user_id, value: @user.id %>
-      <%= f.submit t("officing.voters.show.submit"), class: "button success expanded" %>
+      <%= f.submit t("officing.voters.show.submit"), 
+                   class: "button success expanded",
+                   data: { disable_with: t("officing.voters.can_vote.submit_disable_with") } %>
     <% end %>
   </div>
 </div>

config/locales/en/officing.yml

@@ -64,3 +64,5 @@ en:
         error_already_voted: Has already participated in this poll
         submit: Confirm vote
         success: "Vote introduced!"
+      can_vote:
+        submit_disable_with: "WAIT, confirming vote"

config/locales/es/officing.yml

@@ -64,3 +64,5 @@ es:
         error_already_voted: "Ya ha participado en esta votación."
         submit: Confirmar voto
         success: "¡Voto introducido!"
+      can_vote:
+        submit_disable_with: "ESPERA, confirmando voto"