Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Cache / Context / SessionExistsCacheContext.php

diff --git a/web/core/lib/Drupal/Core/Cache/Context/SessionExistsCacheContext.php b/web/core/lib/Drupal/Core/Cache/Context/SessionExistsCacheContext.php
new file mode 100644 (file)
index 0000000..7ffc5e9
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Cache/Context/SessionExistsCacheContext.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\Core\Cache\Context;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Session\SessionConfigurationInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * Defines the SessionExistsCacheContext service, for "session or not" caching.
+ *
+ * Cache context ID: 'session.exists'.
+ */
+class SessionExistsCacheContext implements CacheContextInterface {
+
+  /**
+   * The session configuration.
+   *
+   * @var \Drupal\Core\Session\SessionConfigurationInterface
+   */
+  protected $sessionConfiguration;
+
+  /**
+   * The request stack.
+   *
+   * @var \Symfony\Component\HttpFoundation\RequestStack
+   */
+  protected $requestStack;
+
+  /**
+   * Constructs a new SessionExistsCacheContext class.
+   *
+   * @param \Drupal\Core\Session\SessionConfigurationInterface $session_configuration
+   *   The session configuration.
+   * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+   *   The request stack.
+   */
+  public function __construct(SessionConfigurationInterface $session_configuration, RequestStack $request_stack) {
+    $this->sessionConfiguration = $session_configuration;
+    $this->requestStack = $request_stack;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getLabel() {
+    return t('Session exists');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getContext() {
+    return $this->sessionConfiguration->hasSession($this->requestStack->getCurrentRequest()) ? '1' : '0';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheableMetadata() {
+    return new CacheableMetadata();
+  }
+
+}