UPGRADE FROM 4.2 to 4.3 ======================= BrowserKit ---------- * Renamed `Client` to `AbstractBrowser` * Marked `Response` final. * Deprecated `Response::buildHeader()` * Deprecated `Response::getStatus()`, use `Response::getStatusCode()` instead Cache ----- * The `psr/simple-cache` dependency has been removed - run `composer require psr/simple-cache` if you need it. * Deprecated all PSR-16 adapters, use `Psr16Cache` or `Symfony\Contracts\Cache\CacheInterface` implementations instead. * Deprecated `SimpleCacheAdapter`, use `Psr16Adapter` instead. Config ------ * Deprecated using environment variables with `cannotBeEmpty()` if the value is validated with `validate()` EventDispatcher --------------- * The signature of the `EventDispatcherInterface::dispatch()` method should be updated to `dispatch($event, string $eventName = null)`, not doing so is deprecated Form ---- * Using the `format` option of `DateType` and `DateTimeType` when the `html5` option is enabled is deprecated. * Using names for buttons that do not start with a letter, a digit, or an underscore is deprecated and will lead to an exception in 5.0. * Using names for buttons that do not contain only letters, digits, underscores, hyphens, and colons is deprecated and will lead to an exception in 5.0. * Using the `date_format`, `date_widget`, and `time_widget` options of the `DateTimeType` when the `widget` option is set to `single_text` is deprecated. FrameworkBundle --------------- * Not passing the project directory to the constructor of the `AssetsInstallCommand` is deprecated. This argument will be mandatory in 5.0. * Deprecated the "Psr\SimpleCache\CacheInterface" / "cache.app.simple" service, use "Symfony\Contracts\Cache\CacheInterface" / "cache.app" instead. * The `generate()` method of the `UrlGenerator` class can return an empty string instead of null. HttpFoundation -------------- * The `MimeTypeGuesserInterface` and `ExtensionGuesserInterface` interfaces have been deprecated, use `Symfony\Component\Mime\MimeTypesInterface` instead. * The `MimeType` and `MimeTypeExtensionGuesser` classes have been deprecated, use `Symfony\Component\Mime\MimeTypes` instead. * The `FileBinaryMimeTypeGuesser` class has been deprecated, use `Symfony\Component\Mime\FileBinaryMimeTypeGuesser` instead. * The `FileinfoMimeTypeGuesser` class has been deprecated, use `Symfony\Component\Mime\FileinfoMimeTypeGuesser` instead. HttpKernel ---------- * Renamed `Client` to `HttpKernelBrowser` * Renamed `FilterControllerArgumentsEvent` to `ControllerArgumentsEvent` * Renamed `FilterControllerEvent` to `ControllerEvent` * Renamed `FilterResponseEvent` to `ResponseEvent` * Renamed `GetResponseEvent` to `RequestEvent` * Renamed `GetResponseForControllerResultEvent` to `ViewEvent` * Renamed `GetResponseForExceptionEvent` to `ExceptionEvent` * Renamed `PostResponseEvent` to `TerminateEvent` Messenger --------- * `Amqp` transport does not throw `\AMQPException` anymore, catch `TransportException` instead. * Deprecated the `LoggingMiddleware` class, pass a logger to `SendMessageMiddleware` instead. Routing ------- * The `generator_base_class`, `generator_cache_class`, `matcher_base_class`, and `matcher_cache_class` router options have been deprecated. * Implementing `Serializable` for `Route` and `CompiledRoute` is deprecated; if you serialize them, please ensure your unserialization logic can recover from a failure related to an updated serialization format Security -------- * The `Role` and `SwitchUserRole` classes are deprecated and will be removed in 5.0. Use strings for roles instead. * The `RoleHierarchyInterface` is deprecated and will be removed in 5.0. * The `getReachableRoles()` method of the `RoleHierarchy` class is deprecated and will be removed in 5.0. Use the `getReachableRoleNames()` method instead. * The `getRoles()` method of the `TokenInterface` is deprecated. Tokens must implement the `getRoleNames()` method instead and return roles as strings. * The `ListenerInterface` is deprecated, turn your listeners into callables instead. * The `Firewall::handleRequest()` method is deprecated, use `Firewall::callListeners()` instead. * The `AbstractToken::serialize()`, `AbstractToken::unserialize()`, `AuthenticationException::serialize()` and `AuthenticationException::unserialize()` methods are now final, use `getState()` and `setState()` instead. Before: ```php public function serialize() { return [$this->myLocalVar, parent::serialize()]; } public function unserialize($serialized) { [$this->myLocalVar, $parentSerialized] = unserialize($serialized); parent::unserialize($parentSerialized); } ``` After: ```php protected function getState(): array { return [$this->myLocalVar, parent::getState()]; } protected function setState(array $data) { [$this->myLocalVar, $parentData] = $data; parent::setState($parentData); } ``` Yaml ---- * Using a mapping inside a multi-line string is deprecated and will throw a `ParseException` in 5.0. Workflow -------- * `MarkingStoreInterface::setMarking()` will have a third argument in Symfony 5.0. Before: ```php class MyMarkingStore implements MarkingStoreInterface { public function setMarking($subject, Marking $marking) { } } ``` After: ```php class MyMarkingStore implements MarkingStoreInterface { public function setMarking($subject, Marking $marking , array $context = []) { } } ```