UPGRADE FROM 5.x to 6.0

Config

The signature of method NodeDefinition::setDeprecated() has been updated to NodeDefinition::setDeprecation(string $package, string $version, string $message).
The signature of method BaseNode::setDeprecated() has been updated to BaseNode::setDeprecation(string $package, string $version, string $message).
Passing a null message to BaseNode::setDeprecated() to un-deprecate a node is not supported anymore.
Removed BaseNode::getDeprecationMessage(), use BaseNode::getDeprecation() instead.

Console

Command::setHidden() has a default value (true) for $hidden parameter

DependencyInjection

The signature of method Definition::setDeprecated() has been updated to Definition::setDeprecation(string $package, string $version, string $message).
The signature of method Alias::setDeprecated() has been updated to Alias::setDeprecation(string $package, string $version, string $message).
The signature of method DeprecateTrait::deprecate() has been updated to DeprecateTrait::deprecation(string $package, string $version, string $message).
Removed the Psr\Container\ContainerInterface and Symfony\Component\DependencyInjection\ContainerInterface aliases of the service_container service, configure them explicitly instead.
Removed Definition::getDeprecationMessage(), use Definition::getDeprecation() instead.
Removed Alias::getDeprecationMessage(), use Alias::getDeprecation() instead.
The inline() function from the PHP-DSL has been removed, use inline_service() instead.
The ref() function from the PHP-DSL has been removed, use service() instead.
Removed Definition::setPrivate() and Alias::setPrivate(), use setPublic() instead

Dotenv

Removed argument $usePutenv from Dotenv's constructor, use Dotenv::usePutenv() instead.

EventDispatcher

Removed LegacyEventDispatcherProxy. Use the event dispatcher without the proxy.

Form

The default value of the rounding_mode option of the PercentType has been changed to \NumberFormatter::ROUND_HALFUP.
The default rounding mode of the PercentToLocalizedStringTransformer has been changed to \NumberFormatter::ROUND_HALFUP.
Added the getIsEmptyCallback() method to the FormConfigInterface.
Added the setIsEmptyCallback() method to the FormConfigBuilderInterface.
Added argument callable|null $filter to ChoiceListFactoryInterface::createListFromChoices() and createListFromLoader().
The Symfony\Component\Form\Extension\Validator\Util\ServerParams class has been removed, use its parent Symfony\Component\Form\Util\ServerParams instead.
The NumberToLocalizedStringTransformer::ROUND_* constants have been removed, use \NumberFormatter::ROUND_* instead.
Removed PropertyPathMapper in favor of DataMapper and PropertyPathAccessor.

FrameworkBundle

MicroKernelTrait::configureRoutes() is now always called with a RoutingConfigurator
The "framework.router.utf8" configuration option defaults to true
Removed session.attribute_bag service and session.flash_bag service.
The form.factory, form.type.file, translator, security.csrf.token_manager, serializer, cache_clearer, filesystem and validator services are now private.
Removed the lock.RESOURCE_NAME and lock.RESOURCE_NAME.store services and the lock, LockInterface, lock.store and PersistingStoreInterface aliases, use lock.RESOURCE_NAME.factory, lock.factory or LockFactory instead.

HttpFoundation

Removed Response::create(), JsonResponse::create(), RedirectResponse::create(), and StreamedResponse::create() methods (use __construct() instead)

HttpKernel

Made WarmableInterface::warmUp() return a list of classes or files to preload on PHP 7.4+
Removed support for service:action syntax to reference controllers. Use serviceOrFqcn::method instead.

Inflector

The component has been removed, use EnglishInflector from the String component instead.

Lock

Removed the NotSupportedException. It shouldn't be thrown anymore.
Removed the RetryTillSaveStore. Logic has been moved in Lock and is not needed anymore.

Mailer

Removed the SesApiTransport class. Use SesApiAsyncAwsTransport instead.
Removed the SesHttpTransport class. Use SesHttpAsyncAwsTransport instead.

Messenger

Removed AmqpExt transport. Run composer require symfony/amqp-messenger to keep the transport in your application.
Removed Doctrine transport. Run composer require symfony/doctrine-messenger to keep the transport in your application.
Removed RedisExt transport. Run composer require symfony/redis-messenger to keep the transport in your application.
Use of invalid options in Redis and AMQP connections now throws an error.
The signature of method RetryStrategyInterface::isRetryable() has been updated to RetryStrategyInterface::isRetryable(Envelope $message, \Throwable $throwable = null).
The signature of method RetryStrategyInterface::getWaitingTime() has been updated to RetryStrategyInterface::getWaitingTime(Envelope $message, \Throwable $throwable = null).

Mime

Removed Address::fromString(), use Address::create() instead

Monolog

The $actionLevel constructor argument of Symfony\Bridge\Monolog\Handler\FingersCrossed\NotFoundActivationStrategy has been replaced by the $inner one which expects an ActivationStrategyInterface to decorate instead. Symfony\Bridge\Monolog\Handler\FingersCrossed\NotFoundActivationStrategy is now final.
The $actionLevel constructor argument of Symfony\Bridge\Monolog\Handler\FingersCrossed\HttpCodeActivationStrategy has been replaced by the $inner one which expects an ActivationStrategyInterface to decorate instead. Symfony\Bridge\Monolog\Handler\FingersCrossed\HttpCodeActivationStrategy is now final.

OptionsResolver

The signature of method OptionsResolver::setDeprecated() has been updated to OptionsResolver::setDeprecated(string $option, string $package, string $version, $message).
Removed OptionsResolverIntrospector::getDeprecationMessage(), use OptionsResolverIntrospector::getDeprecation() instead.

PhpUnitBridge

Removed support for @expectedDeprecation annotations, use the ExpectDeprecationTrait::expectDeprecation() method instead.

PropertyAccess

Dropped support of a boolean as the first argument of PropertyAccessor::__construct(). Pass a combination of bitwise flags instead.

PropertyInfo

Dropped the enable_magic_call_extraction context option in ReflectionExtractor::getWriteInfo() and ReflectionExtractor::getReadInfo() in favor of enable_magic_methods_extraction.

Routing

Removed RouteCollectionBuilder.
Added argument $priority to RouteCollection::add()
Removed the RouteCompiler::REGEX_DELIMITER constant

Security

Removed ROLE_PREVIOUS_ADMIN role in favor of IS_IMPERSONATOR attribute
Removed LogoutSuccessHandlerInterface and LogoutHandlerInterface, register a listener on the LogoutEvent event instead.
Removed DefaultLogoutSuccessHandler in favor of DefaultLogoutListener.
Added a logout(Request $request, Response $response, TokenInterface $token) method to the RememberMeServicesInterface.
Removed setProviderKey()/getProviderKey() in favor of setFirewallName()/getFirewallName() in PreAuthenticatedToken, RememberMeToken, SwitchUserToken, UsernamePasswordToken, DefaultAuthenticationSuccessHandler.
Removed the AbstractRememberMeServices::$providerKey property in favor of AbstractRememberMeServices::$firewallName

TwigBundle

The twig service is now private.

Validator

Removed the allowEmptyString option from the Length constraint.

Before:

use Symfony\Component\Validator\Constraints as Assert;

/**
 * @Assert\Length(min=5, allowEmptyString=true)
 */

After:

use Symfony\Component\Validator\Constraints as Assert;

/**
 * @Assert\AtLeastOneOf({
 *     @Assert\Blank(),
 *     @Assert\Length(min=5)
 * })
 */

Removed the NumberConstraintTrait trait.

Yaml

Added support for parsing numbers prefixed with 0o as octal numbers.
Removed support for parsing numbers starting with 0 as octal numbers. They will be parsed as strings. Prefix numbers with 0o so that they are parsed as octal numbers.

Before:
```
Yaml::parse('072');
```
After:
```
Yaml::parse('0o72');
```
Removed support for using the !php/object and !php/const tags without a value.

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