symfony/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).

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).

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 service serializer.mapping.cache.doctrine.apc is deprecated. APCu should now be automatically used when available.

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"
  

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

TwigBridge

• Deprecated the possibility to inject the Form Twig Renderer into the form extension. Inject it into the TwigRendererEngine instead.

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).