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KernelEvents.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\HttpKernel;
013
014 /**
015 * Contains all events thrown in the HttpKernel component.
016 *
017 * @author Bernhard Schussek <bschussek@gmail.com>
018 */
019 final class KernelEvents
020 {
021 /**
022 * The REQUEST event occurs at the very beginning of request
023 * dispatching.
024 *
025 * This event allows you to create a response for a request before any
026 * other code in the framework is executed.
027 *
028 * @Event("Symfony\Component\HttpKernel\Event\GetResponseEvent")
029 */
030 const REQUEST = 'kernel.request';
031
032 /**
033 * The EXCEPTION event occurs when an uncaught exception appears.
034 *
035 * This event allows you to create a response for a thrown exception or
036 * to modify the thrown exception.
037 *
038 * @Event("Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent")
039 */
040 const EXCEPTION = 'kernel.exception';
041
042 /**
043 * The VIEW event occurs when the return value of a controller
044 * is not a Response instance.
045 *
046 * This event allows you to create a response for the return value of the
047 * controller.
048 *
049 * @Event("Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent")
050 */
051 const VIEW = 'kernel.view';
052
053 /**
054 * The CONTROLLER event occurs once a controller was found for
055 * handling a request.
056 *
057 * This event allows you to change the controller that will handle the
058 * request.
059 *
060 * @Event("Symfony\Component\HttpKernel\Event\FilterControllerEvent")
061 */
062 const CONTROLLER = 'kernel.controller';
063
064 /**
065 * The CONTROLLER_ARGUMENTS event occurs once controller arguments have been resolved.
066 *
067 * This event allows you to change the arguments that will be passed to
068 * the controller.
069 *
070 * @Event("Symfony\Component\HttpKernel\Event\FilterControllerArgumentsEvent")
071 */
072 const CONTROLLER_ARGUMENTS = 'kernel.controller_arguments';
073
074 /**
075 * The RESPONSE event occurs once a response was created for
076 * replying to a request.
077 *
078 * This event allows you to modify or replace the response that will be
079 * replied.
080 *
081 * @Event("Symfony\Component\HttpKernel\Event\FilterResponseEvent")
082 */
083 const RESPONSE = 'kernel.response';
084
085 /**
086 * The TERMINATE event occurs once a response was sent.
087 *
088 * This event allows you to run expensive post-response jobs.
089 *
090 * @Event("Symfony\Component\HttpKernel\Event\PostResponseEvent")
091 */
092 const TERMINATE = 'kernel.terminate';
093
094 /**
095 * The FINISH_REQUEST event occurs when a response was generated for a request.
096 *
097 * This event allows you to reset the global and environmental state of
098 * the application, when it was changed during the request.
099 *
100 * @Event("Symfony\Component\HttpKernel\Event\FinishRequestEvent")
101 */
102 const FINISH_REQUEST = 'kernel.finish_request';
103 }
104