symfony/UPGRADE-2.8.md

UPGRADE FROM 2.7 to 2.8

Form

• The "cascade_validation" option was deprecated. Use the "constraints" option together with the Valid constraint instead. Contrary to "cascade_validation", "constraints" must be set on the respective child forms, not the parent form.

  Before:

  $form = $this->createForm('form', $article, array('cascade_validation' => true))
      ->add('author', new AuthorType())
      ->getForm();
  

  After:

  use Symfony\Component\Validator\Constraints\Valid;
  
  $form = $this->createForm('form', $article)
      ->add('author', new AuthorType(), array(
          'constraints' => new Valid(),
      ))
      ->getForm();
  

  Alternatively, you can set the Valid constraint in the model itself:

  use Symfony\Component\Validator\Constraints as Assert;
  
  class Article
  {
      /**
       * @Assert\Valid
       */
      private $author;
  }
  

Translator

• The getMessages() method of the Symfony\Component\Translation\Translator was deprecated and will be removed in Symfony 3.0. You should use the getCatalogue() method of the Symfony\Component\Translation\TranslatorBagInterface.

  Before:

  $messages = $translator->getMessages();
  

  After:

   $catalogue = $translator->getCatalogue($locale);
   $messages = $catalogue->all();
  
   while ($catalogue = $catalogue->getFallbackCatalogue()) {
       $messages = array_replace_recursive($catalogue->all(), $messages);
   }
  

DependencyInjection

• The concept of scopes were deprecated, the deprecated methods are:

  • Symfony\Component\DependencyInjection\ContainerBuilder::getScopes()
  • Symfony\Component\DependencyInjection\ContainerBuilder::getScopeChildren()
  • Symfony\Component\DependencyInjection\ContainerInterface::enterScope()
  • Symfony\Component\DependencyInjection\ContainerInterface::leaveScope()
  • Symfony\Component\DependencyInjection\ContainerInterface::addScope()
  • Symfony\Component\DependencyInjection\ContainerInterface::hasScope()
  • Symfony\Component\DependencyInjection\ContainerInterface::isScopeActive()
  • Symfony\Component\DependencyInjection\Definition::setScope()
  • Symfony\Component\DependencyInjection\Definition::getScope()
  • Symfony\Component\DependencyInjection\Reference::isStrict()

Also, the $scope and $strict parameters of Symfony\Component\DependencyInjection\ContainerInterface::set() and Symfony\Component\DependencyInjection\Reference respectively were deprecated.

• A new shared flag has been added to the service definition in replacement of the prototype scope.

  Before:

  use Symfony\Component\DependencyInjection\ContainerBuilder;
  
  $container = new ContainerBuilder();
  $container
      ->register('foo', 'stdClass')
      ->setScope(ContainerBuilder::SCOPE_PROTOTYPE)
  ;
  

  services:
      foo:
          class: stdClass
          scope: prototype
  

  <services>
      <service id="foo" class="stdClass" scope="prototype" />
  </services>
  

  After:

  use Symfony\Component\DependencyInjection\ContainerBuilder;
  
  $container = new ContainerBuilder();
  $container
      ->register('foo', 'stdClass')
      ->setShared(false)
  ;
  

  services:
      foo:
          class: stdClass
          shared: false
  

  <services>
      <service id="foo" class="stdClass" shared="false" />
  </services>
  

Web Development Toolbar

The web development toolbar has been completely redesigned. This update has introduced some changes in the HTML markup of the toolbar items.

Before:

Information was wrapped with simple <span> elements:

{% block toolbar %}
    {% set icon %}
        <span>
            <svg ...></svg>
            <span>{{ '%.1f'|format(collector.memory / 1024 / 1024) }} MB</span>
        </span>
    {% endset %}
{% endblock %}

After:

Information is now semantically divided into values and labels according to the class attribute of each <span> element:

{% block toolbar %}
    {% set icon %}
        <svg ...></svg>
        <span class="sf-toolbar-value">
            {{ '%.1f'|format(collector.memory / 1024 / 1024) }}
        </span>
        <span class="sf-toolbar-label">MB</span>
    {% endset %}
{% endblock %}

Most of the blocks designed for the previous toolbar will still be displayed correctly. However, if you want to support both the old and the new toolbar, it's better to make use of the new profiler_markup_version variable passed to the toolbar templates:

{% block toolbar %}
    {% set profiler_markup_version = profiler_markup_version|default(1) %}

    {% set icon %}
        {% if profiler_markup_version == 1 %}

            {# code for the original toolbar #}

        {% else %}

            {# code for the new toolbar (Symfony 2.8+) #}

        {% endif %}
    {% endset %}
{% endblock %}

FrameworkBundle

• The default value of the parameter session.cookie_httponly is now true. It prevents scripting languages, such as JavaScript to access the cookie, which help to reduce identity theft through XSS attacks. If your application needs to access the session cookie, override this parameter:

  framework:
      session:
          cookie_httponly: false