Merge branch '2103' of https://github.com/janfrs/yii2 into janfrs-2103

framework/CHANGELOG.md

@@ -18,6 +18,7 @@ Yii Framework 2 Change Log
 - Bug #9754: Fixed `yii\web\Request` error when path info is empty (dynasource)
 - Chg #9369: `Yii::$app->user->can()` now returns `false` instead of erroring in case `authManager` component is not configured (creocoder)
 - Chg #9411: `DetailView` now automatically sets container tag ID in case it's not specified (samdark)
+- Enh #2106: Added Unprocessable Entity Http Exception (janfrs)
 - Enh #9635: Added default CSS class for `\yii\grid\ActionColumn` header (arogachev, dynasource)
 - Enh #9711: Added `yii\widgets\LinkPager::$pageCssClass` that allows to set default page class (ShNURoK42)
 

framework/web/UnprocessableEntityHttpException.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\web;
+
+/**
+ * UnprocessableEntityHttpException represents an "Unprocessable Entity" HTTP 
+ * exception with status code 422.
+ *
+ * Use this exception to inform that the server understands the content type of
+ * the request entity and the syntax of that request entity is correct but server 
+ * was unable to process the contained instructions. For example, to return form 
+ * validation errors. 
+ *
+ * @link http://www.webdav.org/specs/rfc2518.html#STATUS_422
+ * @author Jan Silva <janfrs3@gmail.com>
+ * @since 2.0.7
+ */
+class UnprocessedEntityHttpException extends HttpException
+{
+    /**
+     * Constructor.
+     * @param string $message error message
+     * @param integer $code error code
+     * @param \Exception $previous The previous exception used for the exception chaining.
+     */
+    public function __construct($message = null, $code = 0, \Exception $previous = null)
+    {
+        parent::__construct(422, $message, $code, $previous);
+    }
+}