diff core/lib/Drupal/Core/EventSubscriber/ExceptionDetectNeedsInstallSubscriber.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/EventSubscriber/ExceptionDetectNeedsInstallSubscriber.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,65 @@
+<?php
+
+namespace Drupal\Core\EventSubscriber;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Installer\InstallerRedirectTrait;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+/**
+ * Exception handler to determine if an exception indicates an uninstalled site.
+ */
+class ExceptionDetectNeedsInstallSubscriber implements EventSubscriberInterface {
+  use InstallerRedirectTrait;
+
+  /**
+   * The default database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $connection;
+
+  /**
+   * Constructs a new ExceptionDetectNeedsInstallSubscriber.
+   *
+   * @param \Drupal\Core\Database\Connection $connection
+   *   The default database connection.
+   */
+  public function __construct(Connection $connection) {
+    $this->connection = $connection;
+  }
+
+  /**
+   * Handles errors for this subscriber.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
+   *   The event to process.
+   */
+  public function onException(GetResponseForExceptionEvent $event) {
+    $exception = $event->getException();
+    if ($this->shouldRedirectToInstaller($exception, $this->connection)) {
+      // Only redirect if this is an HTML response (i.e., a user trying to view
+      // the site in a web browser before installing it).
+      $request = $event->getRequest();
+      $format = $request->query->get(MainContentViewSubscriber::WRAPPER_FORMAT, $request->getRequestFormat());
+      if ($format == 'html') {
+        $event->setResponse(new RedirectResponse($request->getBasePath() . '/core/install.php', 302, ['Cache-Control' => 'no-cache']));
+      }
+    }
+  }
+
+  /**
+   * Registers the methods in this class that should be listeners.
+   *
+   * @return array
+   *   An array of event listener definitions.
+   */
+  public static function getSubscribedEvents() {
+    $events[KernelEvents::EXCEPTION][] = ['onException', 100];
+    return $events;
+  }
+
+}