Fix validation errors

app/controllers/admin/pages_controller.rb

@@ -41,24 +41,26 @@ def edit; end
     def create
       @page = build_page(content_locale, page_params,
                          param_categories).tap(&:save)
-      if @page.valid?
-        respond_with_page(@page) do
+
+      respond_with_page(@page) do
+        if @page.valid?
           redirect_to(edit_admin_page_url(content_locale, @page))
+        else
+          render action: :new
         end
-      else
-        render action: :new
       end
     end
 
     def update
-      if @page.update(page_params)
-        @page.categories = param_categories
-        respond_with_page(@page) do
+      @page.update(page_params)
+      respond_with_page(@page) do
+        if @page.valid?
+          @page.categories = param_categories
           flash[:notice] = t("pages_core.changes_saved")
           redirect_to edit_admin_page_url(content_locale, @page)
+        else
+          render action: :edit
         end
-      else
-        render action: :edit
       end
     end
 

app/javascript/components/PageForm.tsx

@@ -98,7 +98,12 @@ export default function PageForm(props: Props) {
     method(url, data)
       .then((response: Page.SerializedResource) => {
         dispatch({ type: "setPage", payload: response });
-        noticeToast("Your changes were saved");
+        if (response.errors) {
+          console.log(response.errors);
+          errorToast("A validation error prevented the page from being saved.");
+        } else {
+          noticeToast("Your changes were saved");
+        }
       })
       .catch(() => {
         errorToast("An error occured while saving your changes.");