symfony/UPGRADE-4.3.md

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:

  public function serialize()
  {
      return [$this->myLocalVar, parent::serialize()];
  }
  
  public function unserialize($serialized)
  {
      [$this->myLocalVar, $parentSerialized] = unserialize($serialized);
      parent::unserialize($parentSerialized);
  }
  

  After:

  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:

  class MyMarkingStore implements MarkingStoreInterface
  {
      public function setMarking($subject, Marking $marking)
      {
      }
  }
  

  After:

  class MyMarkingStore implements MarkingStoreInterface
  {
      public function setMarking($subject, Marking $marking , array $context = [])
      {
      }
  }