add events + more wip classes

lib/User/Validator/AjaxRequestModelValidator.php

@@ -0,0 +1,31 @@
+<?php
+namespace Da\User\Validator;
+
+use Da\User\Contracts\ValidatorInterface;
+use yii\base\Model;
+use Yii;
+use yii\bootstrap\ActiveForm;
+use yii\web\Response;
+
+class AjaxRequestModelValidator implements ValidatorInterface
+{
+    protected $model;
+
+    public function __construct(Model $model)
+    {
+        $this->model = $model;
+    }
+
+    public function validate()
+    {
+        $request = Yii::$app->request;
+
+        if($request->getIsAjax() && !$request->getIsPjax()) {
+            if($this->model->load($request->post())) {
+                Yii::$app->response->format = Response::FORMAT_JSON;
+                echo json_encode(ActiveForm::validate($this->model));
+                Yii::$app->end();
+            }
+        }
+    }
+}