(#3) - templating

includes/Views/RsvFormsPage.php

@@ -126,6 +126,7 @@ class RsvFormsPage extends RsvAdminPage {
         echo RsvFormBuilder::create('edit_form_definition', get_rest_url(null, 'reservations/v1/form-definition/' . $id), 'PUT', 'Form definition updated.')
             ->text('name', 'Name', '', true, $form_def['name'])
             ->select('definition.email_key', 'Email Key', $email_key_options, "Form field that holds the submitter's email address.", true, $definition['email_key'] ?? '')
+            ->textarea('definition.success_message', 'Success message', 'Shown to the visitor after a successful submission. HTML is allowed. Use <reservation-summary></reservation-summary> to display the selected reservations. Leave blank for the default message.', false, $definition['success_message'] ?? '')
             ->render();
         ?>
 
@@ -389,8 +390,9 @@ class RsvFormsPage extends RsvAdminPage {
             transform: (body) => ({
                 name: body.name,
                 definition: {
-                    email_key: body.definition?.email_key ?? '',
-                    elements:  rsv_elements_source.get_all(),
+                    email_key:       body.definition?.email_key ?? '',
+                    success_message: body.definition?.success_message ?? '',
+                    elements:        rsv_elements_source.get_all(),
                 },
             }),
             refresh: () => { if (typeof forms_dt !== 'undefined') forms_dt.refresh(); },