feat: prefill edit form with param's data

controllers/ListController.php

@@ -35,6 +35,12 @@ class ListController extends \yii\web\Controller
         }
         
         $model = new ParameterForm();
+        if ($parameter) {
+            $model->setAttributes([
+                'title' => $parameter->title,
+                'type'  => $parameter->type,
+            ]);
+        }
 
         if ($request->isPost) {
             $data = $request->post();