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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()
  • Deprecated the root() method in TreeBuilder, pass the root node information to the constructor instead

DependencyInjection

  • Deprecated support for non-string default env() parameters

    Before:

    parameters:
        env(NAME): 1.5

    After:

    parameters:
           env(NAME): '1.5'

Doctrine Bridge

  • Passing an IdReader to the DoctrineChoiceLoader when the query cannot be optimized with single id field has been deprecated, pass null instead
  • Not passing an IdReader to the DoctrineChoiceLoader when the query can be optimized with single id field has been deprecated

Dotenv

  • First parameter of Dotenv::__construct() will be changed from true to false in Symfony 5.0. A deprecation warning is triggered if no parameter is provided. Use $usePutenv = true to upgrade without breaking changes.

EventDispatcher

  • The signature of the EventDispatcherInterface::dispatch() method should be updated to dispatch($event, string $eventName = null), not doing so is deprecated
  • The Event class has been deprecated, use Symfony\Contracts\EventDispatcher\Event instead

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
  • Deprecated TranslatorListener in favor of LocaleAwareListener

Intl

  • Deprecated ResourceBundle namespace
  • Deprecated Intl::getCurrencyBundle(), use Currencies instead
  • Deprecated Intl::getLanguageBundle(), use Languages or Scripts instead
  • Deprecated Intl::getLocaleBundle(), use Locales instead
  • Deprecated Intl::getRegionBundle(), use Regions instead

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 getReachableRoles() method of the RoleHierarchyInterface is deprecated and will be removed in 5.0. Role hierarchies must implement the getReachableRoleNames() method instead and return roles as strings.

  • 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 __serialize() and __unserialize() instead.

    Before:

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

    After:

    public function __serialize(): array
    {
        return [$this->myLocalVar, parent::__serialize()];
    }
    
    public function __unserialize(array $data): void
    {
        [$this->myLocalVar, $parentData] = $data;
        parent::__unserialize($parentData);
    }
  • The Argon2iPasswordEncoder class has been deprecated, use SodiumPasswordEncoder instead.

  • The BCryptPasswordEncoder class has been deprecated, use NativePasswordEncoder instead.

  • Not implementing the methods __serialize and __unserialize in classes implementing the TokenInterface is deprecated

SecurityBundle

  • Configuring encoders using argon2i or bcrypt as algorithm has been deprecated, use auto instead.

TwigBridge

  • deprecated the $requestStack and $requestContext arguments of the HttpFoundationExtension, pass a Symfony\Component\HttpFoundation\UrlHelper instance as the only argument instead

Workflow

  • initial_place is deprecated in favour of initial_marking.

    Before:

    framework:
       workflows:
           article:
               initial_place: draft

    After:

    framework:
       workflows:
           article:
               initial_marking: [draft]
  • 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 = [])
        {
        }
    }
  • MultipleStateMarkingStore is deprecated. Use MethodMarkingStore instead.

    Before:

    framework:
        workflows:
            type: workflow
            article:
                marking_store:
                    type: multiple
                    arguments: states

    After:

    framework:
        workflows:
            type: workflow
            article:
                marking_store:
                    type: method
                    property: states
  • SingleStateMarkingStore is deprecated. Use MethodMarkingStore instead.

    Before:

    framework:
        workflows:
            article:
                marking_store:
                    arguments: state

    After:

    framework:
        workflows:
            type: state_machine
            article:
                marking_store:
                    type: method
                    property: state
  • Using a workflow with a single state marking is deprecated. Use a state machine instead.

    Before:

    framework:
        workflows:
            article:
                type: workflow
                marking_store:
                    type: single_state

    After:

    framework:
        workflows:
            article:
                type: state_machine
                marking_store:
                    # type: single_state # Since the single_state marking store is deprecated, use method instead
                    type: method

Yaml

  • Using a mapping inside a multi-line string is deprecated and will throw a ParseException in 5.0.
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