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);
 }

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