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UPGRADE-4.0.md

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UPGRADE FROM 3.x to 4.0

ClassLoader

  • The component has been removed. Use Composer instead.

Console

  • Setting unknown style options is not supported anymore and throws an exception.

  • The QuestionHelper::setInputStream() method is removed. Use StreamableInputInterface::setStream() or CommandTester::setInputs() instead.

    Before:

    $input = new ArrayInput();

$questionHelper->setInputStream($stream);
$questionHelper->ask($input, $output, $question);

    After:

    $input = new ArrayInput();
$input->setStream($stream);

$questionHelper->ask($input, $output, $question);

    Before:

    $commandTester = new CommandTester($command);

$stream = fopen('php://memory', 'r+', false);
fputs($stream, "AppBundle\nYes");
rewind($stream);

$command->getHelper('question')->setInputStream($stream);

$commandTester->execute();

    After:

    $commandTester = new CommandTester($command);

$commandTester->setInputs(array('AppBundle', 'Yes'));

$commandTester->execute();

  • The console.exception event and the related ConsoleExceptionEvent class have been removed in favor of the console.error event and the ConsoleErrorEvent class.

  • The SymfonyQuestionHelper::ask default validation has been removed in favor of Question::setValidator.

Debug

  • The ContextErrorException class has been removed. Use \ErrorException instead.

  • FlattenException::getTrace() now returns additional type descriptions integer and float.

  • Support for stacked errors in the ErrorHandler has been removed

DependencyInjection

  • Relying on service auto-registration while autowiring is not supported anymore. Explicitly inject your dependencies or create services whose ids are their fully-qualified class name.

    Before:

    namespace App\Controller;

use App\Mailer;

class DefaultController
{
    public function __construct(Mailer $mailer) {
        // ...
    }

    // ...
}
    services:
    App\Controller\DefaultController:
        autowire: true

    After:

    // same PHP code
    services:
    App\Controller\DefaultController:
        autowire: true

    # or
    # App\Controller\DefaultController:
    #     arguments: { $mailer: "@App\Mailer" }

    App\Mailer:
        autowire: true

  • Autowiring services based on the types they implement is not supported anymore. Rename (or alias) your services to their FQCN id to make them autowirable.

  • _defaults and _instanceof are now reserved service names in Yaml configurations. Please rename any services with that names.

  • Non-numeric keys in methods and constructors arguments have never been supported and are now forbidden. Please remove them if you happen to have one.

  • Service names that start with an underscore are now reserved in Yaml files. Please rename any services with such names.

  • Autowiring-types have been removed, use aliases instead.

    Before:

    <service id="annotations.reader" class="Doctrine\Common\Annotations\AnnotationReader" public="false">
    <autowiring-type>Doctrine\Common\Annotations\Reader</autowiring-type>
</service>

    After:

    <service id="annotations.reader" class="Doctrine\Common\Annotations\AnnotationReader" public="false" />
<service id="Doctrine\Common\Annotations\Reader" alias="annotations.reader" public="false" />

  • Service identifiers are now case sensitive.

  • The Reference and Alias classes do not make service identifiers lowercase anymore.

  • Using the PhpDumper with an uncompiled ContainerBuilder is not supported anymore.

  • Extending the containers generated by PhpDumper is not supported anymore.

  • The DefinitionDecorator class has been removed. Use the ChildDefinition class instead.

  • Using unsupported configuration keys in YAML configuration files raises an exception.

  • Using unsupported options to configure service aliases raises an exception.

  • Setting or unsetting a private service with the Container::set() method is no longer supported. Only public services can be set or unset.

  • Checking the existence of a private service with the Container::has() method is no longer supported and will return false.

  • Requesting a private service with the Container::get() method is no longer supported.

  • The strict attribute in service arguments has been removed. The attribute is ignored since 3.0, so you can simply remove it.

  • Top-level anonymous services in XML are no longer supported.

EventDispatcher

  • The ContainerAwareEventDispatcher class has been removed. Use EventDispatcher with closure factories instead.

ExpressionLanguage

  • The ability to pass a ParserCacheInterface instance to the ExpressionLanguage class has been removed. You should use the CacheItemPoolInterface interface instead.

Filesystem

  • The Symfony\Component\Filesystem\LockHandler has been removed, use the Symfony\Component\Lock\Store\FlockStore class or the Symfony\Component\Lock\Store\FlockStore\SemaphoreStore class directly instead.

Finder

  • The ExceptionInterface has been removed.
  • The Symfony\Component\Finder\Iterator\FilterIterator class has been removed as it used to fix a bug which existed before version 5.5.23/5.6.7

Form

  • The choices_as_values option of the ChoiceType has been removed.

  • Support for data objects that implements both Traversable and ArrayAccess in ResizeFormListener::preSubmit method has been removed.

  • Using callable strings as choice options in ChoiceType is not supported anymore in favor of passing PropertyPath instances.

    Before:

    'choice_value' => new PropertyPath('range'),
'choice_label' => 'strtoupper',

    After:

    'choice_value' => 'range',
'choice_label' => function ($choice) {
    return strtoupper($choice);
},

  • Caching of the loaded ChoiceListInterface in the LazyChoiceList has been removed, it must be cached in the ChoiceLoaderInterface implementation instead.

  • Calling isValid() on a Form instance before submitting it is not supported anymore and raises an exception.

    Before:

    if ($form->isValid()) {
    // ...
}

    After:

    if ($form->isSubmitted() && $form->isValid()) {
    // ...
}

  • Using the "choices" option in CountryType, CurrencyType, LanguageType, LocaleType, and TimezoneType without overriding the choice_loader option is now ignored.

    Before:

    $builder->add('custom_locales', LocaleType::class, array(
    'choices' => $availableLocales,
));

    After:

    $builder->add('custom_locales', LocaleType::class, array(
    'choices' => $availableLocales,
    'choice_loader' => null,
));
// or
$builder->add('custom_locales', LocaleType::class, array(
    'choice_loader' => new CallbackChoiceLoader(function () {
        return $this->getAvailableLocales();
    }),
));

FrameworkBundle

  • The validator.mapping.cache.doctrine.apc service has been removed.

  • The cache:clear command does not warmup the cache anymore. Warmup should be done via the cache:warmup command.

  • The "framework.trusted_proxies" configuration option and the corresponding "kernel.trusted_proxies" parameter have been removed. Use the Request::setTrustedProxies() method in your front controller instead.

  • The default value of the framework.workflows.[name].type configuration options is now state_machine.

  • Support for absolute template paths has been removed.

  • The following form types registered as services have been removed; use their fully-qualified class name instead:

    • "form.type.birthday"
    • "form.type.checkbox"
    • "form.type.collection"
    • "form.type.country"
    • "form.type.currency"
    • "form.type.date"
    • "form.type.datetime"
    • "form.type.email"
    • "form.type.file"
    • "form.type.hidden"
    • "form.type.integer"
    • "form.type.language"
    • "form.type.locale"
    • "form.type.money"
    • "form.type.number"
    • "form.type.password"
    • "form.type.percent"
    • "form.type.radio"
    • "form.type.range"
    • "form.type.repeated"
    • "form.type.search"
    • "form.type.textarea"
    • "form.type.text"
    • "form.type.time"
    • "form.type.timezone"
    • "form.type.url"
    • "form.type.button"
    • "form.type.submit"
    • "form.type.reset"

  • The framework.serializer.cache option and the services serializer.mapping.cache.apc and serializer.mapping.cache.doctrine.apc have been removed. APCu should now be automatically used when available.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\CompilerDebugDumpPass has been removed.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddConsoleCommandPass has been removed. Use Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\SerializerPass class has been removed. Use the Symfony\Component\Serializer\DependencyInjection\SerializerPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\FormPass class has been removed. Use the Symfony\Component\Form\DependencyInjection\FormPass class instead.

  • The Symfony\Bundle\FrameworkBundle\EventListener\SessionListener class has been removed. Use the Symfony\Component\HttpKernel\EventListener\SessionListener class instead.

  • The Symfony\Bundle\FrameworkBundle\EventListener\TestSessionListener class has been removed. Use the Symfony\Component\HttpKernel\EventListener\TestSessionListener class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\ConfigCachePass class has been removed. Use Symfony\Component\Config\DependencyInjection\ConfigCachePass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\PropertyInfoPass class has been removed. Use the Symfony\Component\PropertyInfo\DependencyInjection\PropertyInfoPass class instead.

  • Class parameters related to routing have been removed

    • router.options.generator_class
    • router.options.generator_base_class
    • router.options.generator_dumper_class
    • router.options.matcher_class
    • router.options.matcher_base_class
    • router.options.matcher_dumper_class
    • router.options.matcher.cache_class
    • router.options.generator.cache_class

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\ControllerArgumentValueResolverPass class has been removed. Use the Symfony\Component\HttpKernel\DependencyInjection\ControllerArgumentValueResolverPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\RoutingResolverPass class has been removed. Use the Symfony\Component\Routing\DependencyInjection\RoutingResolverPass class instead.

  • The Symfony\Bundle\FrameworkBundle\Translation\Translator constructor now takes the default locale as mandatory 3rd argument.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddValidatorInitializersPass class has been removed. Use the Symfony\Component\Validator\DependencyInjection\AddValidatorInitializersPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddConstraintValidatorsPass class has been removed. Use the Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\ValidateWorkflowsPass class has been removed. Use the Symfony\Component\Workflow\DependencyInjection\ValidateWorkflowsPass class instead.

  • Using the KERNEL_DIR environment variable and the automatic guessing based on the phpunit.xml file location have been removed from the KernelTestCase::getKernelClass() method implementation. Set the KERNEL_CLASS environment variable to the fully-qualified class name of your Kernel or override the KernelTestCase::createKernel() or KernelTestCase::getKernelClass() method instead.

  • The Symfony\Bundle\FrameworkBundle\Validator\ConstraintValidatorFactory class has been removed. Use Symfony\Component\Validator\ContainerConstraintValidatorFactory instead.

  • The --no-prefix option of the translation:update command has been removed.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddCacheClearerPass class has been removed. Use the Symfony\Component\HttpKernel\DependencyInjection\AddCacheClearerPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddCacheWarmerPass class has been removed. Use the Symfony\Component\HttpKernel\DependencyInjection\AddCacheWarmerPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\TranslationDumperPass class has been removed. Use the Symfony\Component\Translation\DependencyInjection\TranslationDumperPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\TranslationExtractorPass class has been removed. Use the Symfony\Component\Translation\DependencyInjection\TranslationExtractorPass class instead.

  • The Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\TranslatorPass class has been removed. Use the Symfony\Component\Translation\DependencyInjection\TranslatorPass class instead.

HttpFoundation

  • The Request::setTrustedProxies() method takes a new $trustedHeaderSet argument. See http://symfony.com/doc/current/components/http_foundation/trusting_proxies.html for more info.

  • The Request::setTrustedHeaderName() and Request::getTrustedHeaderName() methods have been removed.

  • Extending the following methods of Response is no longer possible (these methods are now final):

    • setDate/getDate
    • setExpires/getExpires
    • setLastModified/getLastModified
    • setProtocolVersion/getProtocolVersion
    • setStatusCode/getStatusCode
    • setCharset/getCharset
    • setPrivate/setPublic
    • getAge
    • getMaxAge/setMaxAge
    • setSharedMaxAge
    • getTtl/setTtl
    • setClientTtl
    • getEtag/setEtag
    • hasVary/getVary/setVary
    • isInvalid/isSuccessful/isRedirection/isClientError/isServerError
    • isOk/isForbidden/isNotFound/isRedirect/isEmpty

  • The ability to check only for cacheable HTTP methods using Request::isMethodSafe() is not supported anymore, use Request::isMethodCacheable() instead.

HttpKernel

  • Removed the kernel.root_dir parameter. Use the kernel.project_dir parameter instead.

  • Removed the Kernel::getRootDir() method. Use the Kernel::getProjectDir() method instead.

  • The Extension::addClassesToCompile() and Extension::getClassesToCompile() methods have been removed.

  • Possibility to pass non-scalar values as URI attributes to the ESI and SSI renderers has been removed. The inline fragment renderer should be used with non-scalar attributes.

  • The ControllerResolver::getArguments() method has been removed. If you have your own ControllerResolverInterface implementation, you should inject an ArgumentResolverInterface instance.

  • The DataCollector::varToString() method has been removed in favor of cloneVar().

  • The Psr6CacheClearer::addPool() method has been removed. Pass an array of pools indexed by name to the constructor instead.

  • The LazyLoadingFragmentHandler::addRendererService() method has been removed.

  • The X-Status-Code header method of setting a custom status code in the response when handling exceptions has been removed. There is now a new GetResponseForExceptionEvent::allowCustomResponseCode() method instead, which will tell the Kernel to use the response code set on the event's response object.

  • The Kernel::getEnvParameters() method has been removed.

  • The SYMFONY__ environment variables are no longer processed automatically by Symfony. Use the %env()% syntax to get the value of any environment variable from configuration files instead.

Ldap

  • The RenameEntryInterface has been removed, and merged with EntryManagerInterface

Process

  • The Symfony\Component\Process\ProcessBuilder class has been removed, use the Symfony\Component\Process\Process class directly instead.

  • The ProcessUtils::escapeArgument() method has been removed, use a command line array or give env vars to the Process::start/run() method instead.

  • Environment variables are always inherited in sub-processes.

  • Configuring proc_open() options has been removed.

  • Configuring Windows and sigchild compatibility is not possible anymore - they are always enabled.

  • Extending Process::run(), Process::mustRun() and Process::restart() is not supported anymore.

ProxyManager

  • The ProxyDumper class has been made final

Security

  • The RoleInterface has been removed. Extend the Symfony\Component\Security\Core\Role\Role class instead.

  • The LogoutUrlGenerator::registerListener() method expects a 6th string $context = null argument.

  • The AccessDecisionManager::setVoters() method has been removed. Pass the voters to the constructor instead.

SecurityBundle

  • The FirewallContext::getContext() method has been removed, use the getListeners() and/or getExceptionListener() method instead.

  • The FirewallMap::$map and $container properties have been removed.

  • The UserPasswordEncoderCommand class does not allow null as the first argument anymore.

  • UserPasswordEncoderCommand does not extend ContainerAwareCommand nor implement ContainerAwareInterface anymore.

Serializer

  • The ability to pass a Doctrine Cache instance to the ClassMetadataFactory class has been removed. You should use the CacheClassMetadataFactory class instead.

  • Not defining the 6th argument $format = null of the AbstractNormalizer::instantiateObject() method when overriding it is not supported anymore.

  • Extending ChainDecoder, ChainEncoder, ArrayDenormalizer is not supported anymore.

Translation

  • Removed the backup feature from the file dumper classes.

TwigBundle

  • The ContainerAwareRuntimeLoader class has been removed. Use the Twig Twig_ContainerRuntimeLoader class instead.

  • Removed DebugCommand in favor of Symfony\Bridge\Twig\Command\DebugCommand.

  • Removed ContainerAwareInterface implementation in Symfony\Bundle\TwigBundle\Command\LintCommand.

TwigBridge

  • removed the Symfony\Bridge\Twig\Form\TwigRenderer class, use the FormRenderer class from the Form component instead

  • Removed the possibility to inject the Form TwigRenderer into the FormExtension. Upgrade Twig to ^1.30, inject the Twig_Environment into the TwigRendererEngine and load the TwigRenderer using the Twig_FactoryRuntimeLoader instead.

    Before:

    use Symfony\Bridge\Twig\Extension\FormExtension;
use Symfony\Bridge\Twig\Form\TwigRenderer;
use Symfony\Bridge\Twig\Form\TwigRendererEngine;

// ...
$rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'));
$rendererEngine->setEnvironment($twig);
$twig->addExtension(new FormExtension(new TwigRenderer($rendererEngine, $csrfTokenManager)));

    After:

    $rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'), $twig);
$twig->addRuntimeLoader(new \Twig_FactoryRuntimeLoader(array(
    TwigRenderer::class => function () use ($rendererEngine, $csrfTokenManager) {
        return new TwigRenderer($rendererEngine, $csrfTokenManager);
    },
)));
$twig->addExtension(new FormExtension());

  • Removed the TwigRendererEngineInterface interface.

  • The TwigRendererEngine::setEnvironment() method has been removed. Pass the Twig Environment as second argument of the constructor instead.

  • Removed Symfony\Bridge\Twig\Command\DebugCommand::set/getTwigEnvironment and the ability to pass a command name as first argument.

  • Removed Symfony\Bridge\Twig\Command\LintCommand::set/getTwigEnvironment and the ability to pass a command name as first argument.

Validator

  • The default value of the strict option of the Choice constraint was changed to true. Using any other value will throw an exception.

  • The DateTimeValidator::PATTERN constant was removed.

  • Tests\Constraints\AbstractConstraintValidatorTest has been removed in favor of Test\ConstraintValidatorTestCase.

    Before:

    // ...
use Symfony\Component\Validator\Tests\Constraints\AbstractConstraintValidatorTest;

class MyCustomValidatorTest extends AbstractConstraintValidatorTest
{
    // ...
}

    After:

    // ...
use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;

class MyCustomValidatorTest extends ConstraintValidatorTestCase
{
    // ...
}

VarDumper

  • The VarDumperTestTrait::assertDumpEquals() method expects a 3rd $context = null argument and moves $message = '' argument at 4th position.

    Before:

    VarDumperTestTrait::assertDumpEquals($dump, $data, $message = '');

    After:

    VarDumperTestTrait::assertDumpEquals($dump, $data, $filter = 0, $message = '');

  • The VarDumperTestTrait::assertDumpMatchesFormat() method expects a 3rd $context = null argument and moves $message = '' argument at 4th position.

    Before:

    VarDumperTestTrait::assertDumpMatchesFormat($dump, $data, $message = '');

    After:

    VarDumperTestTrait::assertDumpMatchesFormat($dump, $data, $filter = 0, $message = '');

Workflow

  • Removed class name support in WorkflowRegistry::add() as second parameter.

Yaml

  • Support for the !str tag was removed, use the !!str tag instead.

  • Starting an unquoted string with a question mark followed by a space throws a ParseException.

  • Removed support for implicitly parsing non-string mapping keys as strings. Mapping keys that are no strings will result in a ParseException. Use quotes to opt-in for keys to be parsed as strings.

    Before:

    $yaml = <<<YAML
null: null key
true: boolean true
2.0: float key
YAML;

Yaml::parse($yaml);

    After:

    $yaml = <<<YAML
"null": null key
"true": boolean true
"2.0": float key
YAML;

Yaml::parse($yaml);

  • Omitting the key of a mapping is not supported anymore and throws a ParseException.

  • Mappings with a colon (:) that is not followed by a whitespace are not supported anymore and lead to a ParseException(e.g. foo:bar must be foo: bar).

  • Starting an unquoted string with % leads to a ParseException.

  • The Dumper::setIndentation() method was removed. Pass the indentation level to the constructor instead.

  • Removed support for passing true/false as the second argument to the parse() method to trigger exceptions when an invalid type was passed.

    Before:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', true);

    After:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE);

  • Removed support for passing true/false as the third argument to the parse() method to toggle object support.

    Before:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', false, true);

    After:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', Yaml::PARSE_OBJECT);

  • Removed support for passing true/false as the fourth argument to the parse() method to parse objects as maps.

    Before:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', false, false, true);

    After:

    Yaml::parse('{ "foo": "bar", "fiz": "cat" }', Yaml::PARSE_OBJECT_FOR_MAP);

  • Removed support for passing true/false as the fourth argument to the dump() method to trigger exceptions when an invalid type was passed.

    Before:

    Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, true);

    After:

    Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);

  • Removed support for passing true/false as the fifth argument to the dump() method to toggle object support.

    Before:

    Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, false, true);

    After:

    Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, false, Yaml::DUMP_OBJECT);

  • The !!php/object tag to indicate dumped PHP objects was removed in favor of the !php/object tag.

  • Duplicate mapping keys lead to a ParseException.

  • The constructor arguments $offset, $totalNumberOfLines and $skippedLineNumbers of the Parser class were removed.

  • The behavior of the non-specific tag ! is changed and now forces non-evaluating your values.