Fix RailsAdmin widgets not activated after a validation error

Refs. hotwired/turbo#85

Author: mshibuya

spec/integration/rails_admin_spec.rb

@@ -196,6 +196,14 @@
       click_link 'Back to admin'
       is_expected.to have_content 'Details for Player'
     end
+
+    it 'triggers rails_admin.dom_ready right after a validation error' do
+      visit edit_path(model_name: 'player', id: player.id)
+      fill_in 'player[name]', with: 'on steroids'
+      find_button('Save').trigger 'click'
+      is_expected.to have_content 'Player failed to be updated'
+      is_expected.to have_css '.filtering-select[data-input-for="player_team_id"]'
+    end
   end
 
   context 'with invalid model name' do

src/rails_admin/ui.js

@@ -79,12 +79,14 @@ import I18n from "./i18n";
     }
   );
 
-  document.addEventListener("turbo:load", function () {
+  function triggerDomReady() {
     I18n.init($("html").attr("lang"), $("#admin-js").data("i18nOptions"));
 
     const event = new CustomEvent("rails_admin.dom_ready");
     document.dispatchEvent(event);
-  });
+  }
+  $(document).ready(triggerDomReady);
+  document.addEventListener("turbo:render", triggerDomReady);
 
   document.addEventListener("rails_admin.dom_ready", function () {
     $(".nav.nav-pills li.active").removeClass("active");