IMPR: AJAX finish response for ElementForm

_config/config.yml

@@ -17,6 +17,10 @@ SilverStripe\UserForms\Model\UserDefinedForm:
   can_be_root: false
   extensions:
     - A2nt\ElementalBasics\Extensions\UserDefinedFormExtension
+
+SilverStripe\Core\Injector\Injector:
+  DNADesign\ElementalUserForms\Control\ElementFormController:
+    class: A2nt\ElementalBasics\Controllers\ElementFormController
 ##################
 
 SilverStripe\CMS\Controllers\ContentController:

src/Controllers/ElementFormController.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace A2nt\ElementalBasics\Controllers;
+
+use DNADesign\Elemental\Models\BaseElement;
+use DNADesign\ElementalUserForms\Control\ElementFormController as ControlElementFormController;
+use SilverStripe\Control\Director;
+use SilverStripe\Core\Injector\Injector;
+use SilverStripe\ORM\ValidationResult;
+
+class ElementFormController extends ControlElementFormController
+{
+    private static $allowed_actions = [
+        'finished',
+    ];
+
+    public function finished()
+    {
+        $user = $this->getUserFormController();
+        $user->finished();
+
+        $page = $this->getPage();
+        if (Director::is_ajax()) {
+            $el = $this->getElement();
+            return json_encode([
+                'message' => $el->OnCompleteMessage,
+                'status' => ValidationResult::TYPE_GOOD,
+            ]);
+        }
+
+        return parent::finished();
+    }
+}

src/Controllers/MapElementController.php

@@ -1,6 +1,5 @@
 <?php
 
-
 namespace A2nt\ElementalBasics\Controllers;
 
 use DNADesign\Elemental\Controllers\ElementController;