Deprecat service "session"

Author: jderusse

CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 5.3
 ---
 
+ * Add the `RequestStack::getSession` method
  * Deprecate the `NamespacedAttributeBag` class
  * added `ResponseFormatSame` PHPUnit constraint
 

Exception/SessionNotFoundException.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Exception;
+
+/**
+ * Raised when a session does not exists. This happens in the following cases:
+ * - the session is not enabled
+ * - attempt to read a session outside a request context (ie. cli script).
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+class SessionNotFoundException extends \LogicException implements RequestExceptionInterface
+{
+    public function __construct($message = 'There is currently no session available.', $code = 0, Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
+}

RequestStack.php

@@ -11,6 +11,9 @@
 
 namespace Symfony\Component\HttpFoundation;
 
+use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;
+use Symfony\Component\HttpFoundation\Session\SessionInterface;
+
 /**
  * Request stack that controls the lifecycle of requests.
  *
@@ -100,4 +103,18 @@ public function getParentRequest()
 
         return $this->requests[$pos];
     }
+
+    /**
+     * Gets the current session.
+     *
+     * @throws SessionNotFoundException
+     */
+    public function getSession(): SessionInterface
+    {
+        if ((null !== $request = end($this->requests) ?: null) && $request->hasSession()) {
+            return $request->getSession();
+        }
+
+        throw new SessionNotFoundException();
+    }
 }