init Area full CRUD

widgets/Tree.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace app\widgets;
+
+use yii\base\Widget;
+
+class Tree extends Widget {
+
+    public $model;
+
+    public function init() {
+        parent::init();
+    }
+
+    public function run() {
+
+        return $this->render("tree", [
+                    "root" => $this->model->findOne(1),
+                    "model" => $this->model
+        ]);
+    }
+
+}