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How to update your project?

This document explains how to upgrade from one Symfony2 version to the next one. It only discusses changes that need to be done when using the "public" API of the framework. If you "hack" the core, you should probably follow the timeline closely anyway.

RC4 to RC5

  • The MapFileClassLoader has been removed in favor of a new MapClassLoader.

  • The exception_controller setting has been moved from the framework section to the twig one.

  • The custom error pages must now reference TwigBundle instead of FrameworkBundle (see http://symfony.com/doc/2.0/cookbook/controller/error_pages.html)

  • EntityUserProvider class has been moved and FQCN changed from Symfony\Component\Security\Core\User\EntityUserProvider to Symfony\Bridge\Doctrine\Security\User\EntityUserProvider.

  • Cookies access from HeaderBag has been removed. Accessing Request cookies must be done via Request::$cookies`.

  • ResponseHeaderBag::getCookie() and ResponseHeaderBag::hasCookie() methods were removed.

  • The method ResponseHeaderBag::getCookies() now supports an argument for the returned format (possible values are ResponseHeaderBag::COOKIES_FLAT (default value) or ResponseHeaderBag::COOKIES_ARRAY).

    • ResponseHeaderBag::COOKIES_FLAT returns a simple array (the array keys are not cookie names anymore):

      • array(0 => a Cookie instance, 1 => another Cookie instance)
    • ResponseHeaderBag::COOKIES_ARRAY returns a multi-dimensional array:

      • array(the domain => array(the path => array(the cookie name => a Cookie instance)))
  • Removed the guesser for the Choice constraint as the constraint only knows about the valid keys, and not their values.

  • The configuration of MonologBundle has been refactored.

    • Only services are supported for the processors. They are now registered using the monolog.processor tag which accept three optionnal attributes:

      • handler: the name of an handler to register it only for a specific handler
      • channel: to register it only for one logging channel (exclusive with handler)
      • method: The method used to process the record (__invoke is used if not set)
    • The email_prototype for the SwiftMailerHandler only accept a service id now.

      • Before:

        email_prototype: @acme_demo.monolog.email_prototype

      • After:

        email_prototype: acme_demo.monolog.email_prototype

        or if you want to use a factory for the prototype:

        email_prototype: id: acme_demo.monolog.email_prototype method: getPrototype

  • To avoid security issues, HTTP headers coming from proxies are not trusted anymore by default (like HTTP_X_FORWARDED_FOR, X_FORWARDED_PROTO, and X_FORWARDED_HOST). If your application is behind a reverse proxy, add the following configuration:

      framework:
          trust_proxy_headers: true
    
  • To avoid hidden naming collisions, the AbstractType does not try to define the name of form types magically. You now need to implement the getName() method explicitly when creating a custom type.

  • Renamed some methods to follow the naming conventions:

    Session::getAttributes() -> Session::all()
    Session::setAttributes() -> Session::replace()
    
  • {_locale} is not supported in paths in the access_control section anymore. You can rewrite the paths using a regular expression such as "(?:[a-z]{2})".

RC3 to RC4

  • Annotation classes must be annotated with @Annotation (see the validator constraints for examples)

  • Annotations are not using the PHP autoloading but their own mechanism. This allows much more control about possible failure states. To make your code work, add the following lines at the end of your autoload.php file:

      use Doctrine\Common\Annotations\AnnotationRegistry;
    
      AnnotationRegistry::registerLoader(function($class) use ($loader) {
          $loader->loadClass($class);
          return class_exists($class, false);
      });
    
      AnnotationRegistry::registerFile(
          __DIR__.'/../vendor/doctrine/lib/Doctrine/ORM/Mapping/Driver/DoctrineAnnotations.php'
      );
    

    The $loader variable is an instance of UniversalClassLoader. Additionally you might have to adjust the ORM path to the DoctrineAnnotations.php. If you are not using the UniversalClassLoader see the Doctrine Annotations documentation for more details on how to register annotations.

beta5 to RC1

  • Renamed Symfony\Bundle\FrameworkBundle\Command\Command to Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand

  • Removed the routing AnnotGlobLoader class

  • Some blocks in the Twig Form templates have been renamed to avoid collisions:

    • container_attributes to widget_container_attributes
    • attributes to widget_attributes
    • options to widget_choice_options
  • Event changes:

    • All listeners must now be tagged with kernel.event_listener instead of kernel.listener.
    • Kernel events are now properly prefixed with kernel instead of core:

      • Before:

        <tag name="kernel.listener" event="core.request" method="onCoreRequest" />
        
      • After:

        <tag name="kernel.event_listener" event="kernel.request" method="onKernelRequest" />
        

      Note: the method can of course remain as onCoreRequest, but renaming it as well for consistency with future projects makes sense.

    • The Symfony\Component\HttpKernel\CoreEvents class has been renamed to Symfony\Component\HttpKernel\KernelEvents

  • TrueValidator and FalseValidator constraints validators no longer accepts any value as valid data.

beta4 to beta5

  • UserProviderInterface::loadUser() has been renamed to UserProviderInterface::refreshUser() to make the goal of the method clearer.

  • The $kernel property on WebTestCase is now static. Change any instances of $this->kernel in your functional tests to self::$kernel.

  • The AsseticBundle has been moved to its own repository (it still bundled with Symfony SE).

  • Yaml Component:

    • Exception classes have been moved to their own namespace
    • Yaml::load() has been renamed to Yaml::parse()
  • The File classes from HttpFoundation have been refactored:

    • Symfony\Component\HttpFoundation\File\File has a new API:

      • It now extends \SplFileInfo:

        • former getName() equivalent is getBasename(),
        • former getDirectory() equivalent is getPath(),
        • former getPath() equivalent is getRealPath().
      • the move() method now creates the target directory when it does not exist,

      • getExtension() and guessExtension() do not return the extension with a leading . anymore

    • Symfony\Component\HttpFoundation\File\UploadedFile has a new API:

      • The constructor has a new Boolean parameter that must be set to true in test mode only in order to be able to move the file. This parameter is not intended to be set to true from outside of the core files.

      • getMimeType() now always returns the mime type of the underlying file. Use getClientMimeType() to get the mime type from the request.

      • getSize() now always returns the size of the underlying file. Use getClientSize() to get the file size from the request.

      • Use getClientOriginalName() to retrieve the original name from the request.

  • The extensions setting for Twig has been removed. There is now only one way to register Twig extensions, via the twig.extension tag.

  • The stack of Monolog handlers now bubbles the records by default. To stop the propagation you need to configure the bubbling explicitly.

  • Expanded the SerializerInterface, while reducing the number of public methods in the Serializer class itself breaking BC and adding component specific Exception classes.

  • The FileType Form class has been heavily changed:

    • The temporary storage has been removed.

    • The file type type option has also been removed (the new behavior is the same as when the type was set to file before).

    • The file input is now rendered as any other input field.

  • The em option of the Doctrine EntityType class now takes the entity manager name instead of the EntityManager instance. If you don't pass this option, the default Entity Manager will be used as before.

  • In the Console component: Command::getFullname() and Command::getNamespace() have been removed (Command::getName() behavior is now the same as the old Command::getFullname()).

  • Default Twig form templates have been moved to the Twig bridge. Here is how you can reference them now from a template or in a configuration setting:

    Before:

      TwigBundle:Form:div_layout.html.twig
    

    After:

      form_div_layout.html.twig
    
  • All settings regarding the cache warmers have been removed.

  • Response::isRedirected() has been merged with Response::isRedirect()

beta3 to beta4

  • Client::getProfiler has been removed in favor of Client::getProfile, which returns an instance of Profile.

  • Some UniversalClassLoader methods have been renamed:

    • registerPrefixFallback to registerPrefixFallbacks
    • registerNamespaceFallback to registerNamespaceFallbacks
  • The event system has been made more flexible. A listener can now be any valid PHP callable.

    • EventDispatcher::addListener($eventName, $listener, $priority = 0):

      • $eventName is the event name (cannot be an array anymore),
      • $listener is a PHP callable.
    • The events classes and constants have been renamed:

      • Old class name Symfony\Component\Form\Events and constants:

          Events::preBind = 'preBind'
          Events::postBind = 'postBind'
          Events::preSetData = 'preSetData'
          Events::postSetData = 'postSetData'
          Events::onBindClientData = 'onBindClientData'
          Events::onBindNormData = 'onBindNormData'
          Events::onSetData = 'onSetData'
        
      • New class name Symfony\Component\Form\FormEvents and constants:

          FormEvents::PRE_BIND = 'form.pre_bind'
          FormEvents::POST_BIND = 'form.post_bind'
          FormEvents::PRE_SET_DATA = 'form.pre_set_data'
          FormEvents::POST_SET_DATA = 'form.post_set_data'
          FormEvents::BIND_CLIENT_DATA = 'form.bind_client_data'
          FormEvents::BIND_NORM_DATA = 'form.bind_norm_data'
          FormEvents::SET_DATA = 'form.set_data'
        
      • Old class name Symfony\Component\HttpKernel\Events and constants:

          Events::onCoreRequest = 'onCoreRequest'
          Events::onCoreException = 'onCoreException'
          Events::onCoreView = 'onCoreView'
          Events::onCoreController = 'onCoreController'
          Events::onCoreResponse = 'onCoreResponse'
        
      • New class name Symfony\Component\HttpKernel\CoreEvents and constants:

          CoreEvents::REQUEST = 'core.request'
          CoreEvents::EXCEPTION = 'core.exception'
          CoreEvents::VIEW = 'core.view'
          CoreEvents::CONTROLLER = 'core.controller'
          CoreEvents::RESPONSE = 'core.response'
        
      • Old class name Symfony\Component\Security\Http\Events and constants:

          Events::onSecurityInteractiveLogin = 'onSecurityInteractiveLogin'
          Events::onSecuritySwitchUser = 'onSecuritySwitchUser'
        
      • New class name Symfony\Component\Security\Http\SecurityEvents and constants:

          SecurityEvents::INTERACTIVE_LOGIN = 'security.interactive_login'
          SecurityEvents::SWITCH_USER = 'security.switch_user'
        
    • addListenerService now only takes a single event name as its first argument,

    • Tags in configuration must now set the method to call:

      • Before:

          <tag name="kernel.listener" event="onCoreRequest" />
        
      • After:

          <tag name="kernel.listener" event="core.request" method="onCoreRequest" />
        
    • Subscribers must now always return a hash:

      • Before:

          public static function getSubscribedEvents()
          {
              return Events::onBindNormData;
          }
        
      • After:

          public static function getSubscribedEvents()
          {
              return array(FormEvents::BIND_NORM_DATA => 'onBindNormData');
          }
        
  • Form DateType parameter single-text changed to single_text

  • Form field label helpers now accepts setting attributes, i.e.:
{{ form_label(form.name, 'Custom label', { 'attr': {'class': 'name_field'} }) }}
  • In order to use Swiftmailer, you should now register its "init.php" file via the autoloader ("app/autoloader.php") and remove the Swift_ prefix from the autoloader. For an example on how this should be done, see the Standard Distribution autoload.php.

beta2 to beta3

  • The settings under framework.annotations have changed slightly:

    Before:

    framework:
        annotations:
            cache: file
            file_cache:
                debug: true
                dir: /foo
    

    After:

    framework:
        annotations:
            cache: file
            debug: true
            file_cache_dir: /foo
    

beta1 to beta2

  • The annotation parsing process has been changed (it now uses Doctrine Common 3.0). All annotations which are used in a class must now be imported (just like you import PHP namespaces with the "use" statement):

    Before:

<?php

/**
 * @orm:Entity
 */
class AcmeUser
{
    /**
     * @orm:Id
     * @orm:GeneratedValue(strategy = "AUTO")
     * @orm:Column(type="integer")
     * @var integer
     */
    private $id;

    /**
     * @orm:Column(type="string", nullable=false)
     * @assert:NotBlank
     * @var string
     */
    private $name;
}

After:

<?php

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Entity
 */
class AcmeUser
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer")
     *
     * @var integer
     */
    private $id;

    /**
     * @ORM\Column(type="string", nullable=false)
     * @Assert\NotBlank
     *
     * @var string
     */
    private $name;
}
  • The Set constraint has been removed as it is not required anymore.

Before:

<?php

/**
 * @orm:Entity
 */
class AcmeEntity
{
    /**
     * @assert:Set({@assert:Callback(...), @assert:Callback(...)})
     */
    private $foo;
}

After:

<?php

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints\Callback;

/**
 * @ORM\Entity
 */
class AcmeEntity
{
    /**
     * @Callback(...)
     * @Callback(...)
     */
    private $foo;
}
  • The config under framework.validation.annotations has been removed and was replaced with a boolean flag framework.validation.enable_annotations which defaults to false.

  • Forms must now be explicitly enabled (automatically done in Symfony SE):

    framework:
        form: ~
    

    Which is equivalent to:

    framework:
        form:
            enabled: true
    
  • The Routing Exceptions have been moved:

    Before:

    Symfony\Component\Routing\Matcher\Exception\Exception
    Symfony\Component\Routing\Matcher\Exception\NotFoundException
    Symfony\Component\Routing\Matcher\Exception\MethodNotAllowedException
    

    After:

    Symfony\Component\Routing\Exception\Exception
    Symfony\Component\Routing\Exception\NotFoundException
    Symfony\Component\Routing\Exception\MethodNotAllowedException
    
  • The form component's csrf_page_id option has been renamed to intention.

  • The error_handler setting has been removed. The ErrorHandler class is now managed directly by Symfony SE in AppKernel.

  • The Doctrine metadata files has moved from Resources/config/doctrine/metadata/orm/ to Resources/config/doctrine, the extension from .dcm.yml to .orm.yml, and the file name has been changed to the short class name.

    Before:

      Resources/config/doctrine/metadata/orm/Bundle.Entity.dcm.xml
      Resources/config/doctrine/metadata/orm/Bundle.Entity.dcm.yml
    

    After:

      Resources/config/doctrine/Entity.orm.xml
      Resources/config/doctrine/Entity.orm.yml
    
  • With the introduction of a new Doctrine Registry class, the following parameters have been removed (replaced by methods on the doctrine service):

    • doctrine.orm.entity_managers
    • doctrine.orm.default_entity_manager
    • doctrine.dbal.default_connection

    Before:

    $container->getParameter('doctrine.orm.entity_managers')
    $container->getParameter('doctrine.orm.default_entity_manager')
    $container->getParameter('doctrine.orm.default_connection')
    

    After:

    $container->get('doctrine')->getEntityManagerNames()
    $container->get('doctrine')->getDefaultEntityManagerName()
    $container->get('doctrine')->getDefaultConnectionName()
    

    But you don't really need to use these methods anymore, as to get an entity manager, you can now use the registry directly:

    Before:

    $em = $this->get('doctrine.orm.entity_manager');
    $em = $this->get('doctrine.orm.foobar_entity_manager');
    

    After:

    $em = $this->get('doctrine')->getEntityManager();
    $em = $this->get('doctrine')->getEntityManager('foobar');
    
  • The doctrine:generate:entities arguments and options changed. Run ./app/console doctrine:generate:entities --help for more information about the new syntax.

  • The doctrine:generate:repositories command has been removed. The functionality has been moved to the doctrine:generate:entities.

  • Doctrine event subscribers now use a unique "doctrine.event_subscriber" tag. Doctrine event listeners also use a unique "doctrine.event_listener" tag. To specify a connection, use the optional "connection" attribute.

    Before:

      listener:
          class: MyEventListener
          tags:
              - { name: doctrine.common.event_listener, event: name }
              - { name: doctrine.dbal.default_event_listener, event: name }
      subscriber:
          class: MyEventSubscriber
          tags:
              - { name: doctrine.common.event_subscriber }
              - { name: doctrine.dbal.default_event_subscriber }
    

    After:

      listener:
          class: MyEventListener
          tags:
              - { name: doctrine.event_listener, event: name }                      # register for all connections
              - { name: doctrine.event_listener, event: name, connection: default } # only for the default connection
      subscriber:
          class: MyEventSubscriber
          tags:
              - { name: doctrine.event_subscriber }                      # register for all connections
              - { name: doctrine.event_subscriber, connection: default } # only for the default connection
    
  • Application translations are now stored in the Resources directory:

    Before:

    app/translations/catalogue.fr.xml
    

    After:

    app/Resources/translations/catalogue.fr.xml
    
  • The option modifiable of the collection form type was split into two options allow_add and allow_delete.

    Before:

      $builder->add('tags', 'collection', array(
          'type' => 'text',
          'modifiable' => true,
      ));
    

    After:

      $builder->add('tags', 'collection', array(
          'type' => 'text',
          'allow_add' => true,
          'allow_delete' => true,
      ));
    
  • Request::hasSession() has been renamed to Request::hasPreviousSession(). The method hasSession() still exists, but only checks if the request contains a session object, not if the session was started in a previous request.

  • Serializer: The NormalizerInterface's supports() method has been split in two methods: supportsNormalization() and supportsDenormalization().

  • ParameterBag::getDeep() has been removed, and is replaced with a boolean flag on the ParameterBag::get() method.

  • Serializer: AbstractEncoder & AbstractNormalizer were renamed to SerializerAwareEncoder & SerializerAwareNormalizer.

  • Serializer: The $properties argument has been dropped from all interfaces.

  • Form: Renamed option value text of widget option of the date type was renamed to single-text. text indicates to use separate text boxes now (like for the time type).

  • Form: Renamed view variable name to full_name. The variable name now contains the local, short name (equivalent to $form->getName()).

PR12 to beta1

  • The CSRF secret configuration has been moved to a mandatory global secret setting (as the secret is now used for everything and not just CSRF):

    Before:

      framework:
          csrf_protection:
              secret: S3cr3t
    

    After:

      framework:
          secret: S3cr3t
    
  • The File::getWebPath() and File::rename() methods have been removed, as well as the framework.document_root configuration setting.

  • The File::getDefaultExtension() method has been renamed to File::guessExtension(). The renamed method now returns null if it cannot guess the extension.

  • The session configuration has been refactored:

    • The class option has been removed (use the session.class parameter instead);

    • The PDO session storage configuration has been removed (a cookbook recipe is in the work);

    • The storage_id option now takes a service id instead of just part of it.

  • The DoctrineMigrationsBundle and DoctrineFixturesBundle bundles have been moved to their own repositories.

  • The form framework has been refactored extensively (more information in the documentation).

  • The trans tag does not accept a message as an argument anymore:

    {% trans "foo" %}
    {% trans foo %}
    

    Use the long version the tags or the filter instead:

    {% trans %}foo{% endtrans %}
    {{ foo|trans }}
    

    This has been done to clarify the usage of the tag and filter and also to make it clearer when the automatic output escaping rules are applied (see the doc for more information).

  • Some methods in the DependencyInjection component's ContainerBuilder and Definition classes have been renamed to be more specific and consistent:

    Before:

      $container->remove('my_definition');
      $definition->setArgument(0, 'foo');
    

    After:

      $container->removeDefinition('my_definition');
      $definition->replaceArgument(0, 'foo');
    
  • In the rememberme configuration, the token_provider key now expects a real service id instead of only a suffix.

PR11 to PR12

  • HttpFoundation\Cookie::getExpire() was renamed to getExpiresTime()

  • XML configurations have been normalized. All tags with only one attribute have been converted to tag content:

    Before:

      <bundle name="MyBundle" />
      <app:engine id="twig" />
      <twig:extension id="twig.extension.debug" />
    

    After:

      <bundle>MyBundle</bundle>
      <app:engine>twig</app:engine>
      <twig:extension>twig.extension.debug</twig:extension>
    
  • Fixes a critical security issue which allowed all users to switch to arbitrary accounts when the SwitchUserListener was activated. Configurations which do not use the SwitchUserListener are not affected.

  • The Dependency Injection Container now strongly validates the references of all your services at the end of its compilation process. If you have invalid references this will result in a compile-time exception instead of a run-time exception (the previous behavior).

PR10 to PR11

  • Extension configuration classes should now implement the Symfony\Component\Config\Definition\ConfigurationInterface interface. Note that the BC is kept but implementing this interface in your extensions will allow for further developments.

  • The fingerscrossed Monolog option has been renamed to fingers_crossed.

PR9 to PR10

  • Bundle logical names earned back their Bundle suffix:

    Controllers: Blog:Post:show -> BlogBundle:Post:show

    Templates: Blog:Post:show.html.twig -> BlogBundle:Post:show.html.twig

    Resources: @Blog/Resources/config/blog.xml -> @BlogBundle/Resources/config/blog.xml

    Doctrine: $em->find('Blog:Post', $id) -> $em->find('BlogBundle:Post', $id)

  • ZendBundle has been replaced by MonologBundle. Have a look at the changes made to Symfony SE to see how to upgrade your projects: https://github.com/symfony/symfony-standard/pull/30/files

  • Almost all core bundles parameters have been removed. You should use the settings exposed by the bundle extension configuration instead.

  • Some core bundles service names changed for better consistency.

  • Namespace for validators has changed from validation to assert (it was announced for PR9 but it was not the case then):

    Before:

      @validation:NotNull
    

    After:

      @assert:NotNull
    

    Moreover, the Assert prefix used for some constraints has been removed (AssertTrue to True).

  • ApplicationTester::getDisplay() and CommandTester::getDisplay() method now return the command exit code

PR8 to PR9

  • Symfony\Bundle\FrameworkBundle\Util\Filesystem has been moved to Symfony\Component\HttpKernel\Util\Filesystem

  • The Execute constraint has been renamed to Callback

  • The HTTP exceptions classes signatures have changed:

    Before:

    throw new NotFoundHttpException('Not Found', $message, 0, $e);
    

    After:

    throw new NotFoundHttpException($message, $e);
    
  • The RequestMatcher class does not add ^ and $ anymore to regexp.

    You need to update your security configuration accordingly for instance:

    Before:

    pattern:  /_profiler.*
    pattern:  /login
    

    After:

    pattern:  ^/_profiler
    pattern:  ^/login$
    
  • Global templates under app/ moved to a new location (old directory did not work anyway):

    Before:

      app/views/base.html.twig
      app/views/AcmeDemoBundle/base.html.twig
    

    After:

      app/Resources/views/base.html.twig
      app/Resources/AcmeDemo/views/base.html.twig
    
  • Bundle logical names lose their Bundle suffix:

    Controllers: BlogBundle:Post:show -> Blog:Post:show

    Templates: BlogBundle:Post:show.html.twig -> Blog:Post:show.html.twig

    Resources: @BlogBundle/Resources/config/blog.xml -> @Blog/Resources/config/blog.xml

    Doctrine: $em->find('BlogBundle:Post', $id) -> $em->find('Blog:Post', $id)

  • Assetic filters must be now explicitly loaded:

    assetic:
        filters:
            cssrewrite: ~
            yui_css:
                jar:      "/path/to/yuicompressor.jar"
            my_filter:
                resource: "%kernel.root_dir%/config/my_filter.xml"
                foo:      bar
    
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