UPGRADE-3.2.md

UPGRADE FROM 3.1 to 3.2

BrowserKit

• Client HTTP user agent has been changed to 'Symfony BrowserKit' (was 'Symfony2 BrowserKit' before).

Console

• Setting unknown style options is deprecated and will throw an exception in Symfony 4.0.

DependencyInjection

• Calling get() on a ContainerBuilder instance before compiling the container is deprecated and will throw an exception in Symfony 4.0.

ExpressionLanguage

• Passing a ParserCacheInterface instance to the ExpressionLanguage has been deprecated and will not be supported in Symfony 4.0. You should use the CacheItemPoolInterface interface instead.

Form

• Calling isValid() on a Form instance before submitting it is deprecated and will throw an exception in Symfony 4.0.

  Before:

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

  After:

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

FrameworkBundle

• The doctrine/annotations dependency has been removed; require it via composer require doctrine/annotations if you are using annotations in your project
• The symfony/security-core and symfony/security-csrf dependencies have been removed; require them via composer require symfony/security-core symfony/security-csrf if you depend on them and don't already depend on symfony/symfony
• The symfony/templating dependency has been removed; require it via composer require symfony/templating if you depend on it and don't already depend on symfony/symfony
• The symfony/translation dependency has been removed; require it via composer require symfony/translation if you depend on it and don't already depend on symfony/symfony
• The symfony/asset dependency has been removed; require it via composer require symfony/asset if you depend on it and don't already depend on symfony/symfony
• The Resources/public/images/* files have been removed.
• The Resources/public/css/*.css files have been removed (they are now inlined in TwigBundle).
• The service serializer.mapping.cache.doctrine.apc is deprecated. APCu should now be automatically used when available.

HttpFoundation

• Extending the following methods of Response is deprecated (these methods will be final in 4.0):

  • 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

• Checking only for cacheable HTTP methods with Request::isMethodSafe() is deprecated since version 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with false as first argument or use Request::isMethodCacheable() instead.

HttpKernel

• DataCollector::varToString() is deprecated and will be removed in Symfony 4.0. Use the cloneVar() method instead.

• Surrogate name in a Surrogate-Capability HTTP request header has been changed to 'symfony'.

  Before:

  Surrogate-Capability: symfony2="ESI/1.0"

  After:

  Surrogate-Capability: symfony="ESI/1.0"

Router

• UrlGenerator now generates URLs in compliance with RFC 3986, which means spaces will be percent encoded (%20) inside query strings.

Serializer

• Method AbstractNormalizer::instantiateObject() will have a 6th $format = null argument in Symfony 4.0. Not defining it when overriding the method is deprecated.

TwigBridge

• Injecting the Form TwigRenderer into the FormExtension is deprecated and has no more effect. 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());

• Deprecated the TwigRendererEngineInterface interface, it will be removed in 4.0.

Validator

• Tests\Constraints\AbstractConstraintValidatorTest has been deprecated 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
  {
      // ...
  }

• Setting the strict option of the Choice Constraint to false has been deprecated and the option will be changed to true as of 4.0.

  // ...
  use Symfony\Component\Validator\Constraints as Assert;
  
  class MyEntity
  {
      /**
       * @Assert\Choice(choices={"MR", "MRS"}, strict=true)
       */
      private $salutation;
  }

Yaml

• Support for silently ignoring duplicate mapping keys in YAML has been deprecated and will lead to a ParseException in Symfony 4.0.

• Mappings with a colon (:) that is not followed by a whitespace are deprecated and will lead to a ParseException in Symfony 4.0 (e.g. foo:bar must be foo: bar).