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UPGRADE FROM 2.x to 3.0

ClassLoader

  • The UniversalClassLoader class has been removed in favor of ClassLoader. The only difference is that some method names are different:

    • registerNamespaces() -> addPrefixes()
    • registerPrefixes() -> addPrefixes()
    • registerNamespaces() -> addPrefix()
    • registerPrefixes() -> addPrefix()
    • getNamespaces() -> getPrefixes()
    • getNamespaceFallbacks() -> getFallbackDirs()
    • getPrefixFallbacks() -> getFallbackDirs()
  • The DebugUniversalClassLoader class has been removed in favor of DebugClassLoader. The difference is that the constructor now takes a loader to wrap.

Form

  • The methods Form::bind() and Form::isBound() were removed. You should use Form::submit() and Form::isSubmitted() instead.

    Before:

    $form->bind(array(...));
    

    After:

    $form->submit(array(...));
    
  • Passing a Symfony\Component\HttpFoundation\Request instance, as was supported by FormInterface::bind(), is not possible with FormInterface::submit() anymore. You should use FormInterface::handleRequest() instead.

    Before:

    if ('POST' === $request->getMethod()) {
        $form->bind($request);
    
        if ($form->isValid()) {
            // ...
        }
    }
    

    After:

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

    If you want to test whether the form was submitted separately, you can use the method isSubmitted():

    $form->handleRequest($request);
    
    if ($form->isSubmitted()) {
       // ...
    
       if ($form->isValid()) {
           // ...
       }
    }
    
  • The events PRE_BIND, BIND and POST_BIND were renamed to PRE_SUBMIT, SUBMIT and POST_SUBMIT.

    Before:

    $builder->addEventListener(FormEvents::PRE_BIND, function (FormEvent $event) {
        // ...
    });
    

    After:

    $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
        // ...
    });
    
  • The option "virtual" was renamed to "inherit_data".

    Before:

    $builder->add('address', 'form', array(
        'virtual' => true,
    ));
    

    After:

    $builder->add('address', 'form', array(
        'inherit_data' => true,
    ));
    
  • The class VirtualFormAwareIterator was renamed to InheritDataAwareIterator.

    Before:

    use Symfony\Component\Form\Util\VirtualFormAwareIterator;
    
    $iterator = new VirtualFormAwareIterator($forms);
    

    After:

    use Symfony\Component\Form\Util\InheritDataAwareIterator;
    
    $iterator = new InheritDataAwareIterator($forms);
    
  • The TypeTestCase class was moved from the Symfony\Component\Form\Tests\Extension\Core\Type namespace to the Symfony\Component\Form\Test namespace.

    Before:

    use Symfony\Component\Form\Tests\Extension\Core\Type\TypeTestCase
    
    class MyTypeTest extends TypeTestCase
    {
        // ...
    }
    

    After:

    use Symfony\Component\Form\Test\TypeTestCase;
    
    class MyTypeTest extends TypeTestCase
    {
        // ...
    }
    
  • The FormItegrationTestCase and FormPerformanceTestCase classes were moved form the Symfony\Component\Form\Tests namespace to the Symfony\Component\Form\Test namespace.

FrameworkBundle

  • The enctype method of the form helper was removed. You should use the new method start instead.

    Before:

    <form method="post" action="http://example.com" <?php echo $view['form']->enctype($form) ?>>
        ...
    </form>
    

    After:

    <?php echo $view['form']->start($form) ?>
        ...
    <?php echo $view['form']->end($form) ?>
    

    The method and action of the form default to "POST" and the current document. If you want to change these values, you can set them explicitly in the controller.

    Alternative 1:

    $form = $this->createForm('my_form', $formData, array(
        'method' => 'PUT',
        'action' => $this->generateUrl('target_route'),
    ));
    

    Alternative 2:

    $form = $this->createFormBuilder($formData)
        // ...
        ->setMethod('PUT')
        ->setAction($this->generateUrl('target_route'))
        ->getForm();
    

    It is also possible to override the method and the action in the template:

    <?php echo $view['form']->start($form, array('method' => 'GET', 'action' => 'http://example.com')) ?>
        ...
    <?php echo $view['form']->end($form) ?>
    

HttpKernel

  • The Symfony\Component\HttpKernel\Log\LoggerInterface has been removed in favor of Psr\Log\LoggerInterface. The only difference is that some method names are different:

    • emerg() -> emergency()
    • crit() -> critical()
    • err() -> error()
    • warn() -> warning()

    The previous method renames also happened to the following classes:

    • Symfony\Bridge\Monolog\Logger
    • Symfony\Component\HttpKernel\Log\NullLogger
  • The Symfony\Component\HttpKernel\Kernel::init() method has been removed.

  • The following classes have been renamed as they have been moved to the Debug component:

    • Symfony\Component\HttpKernel\Debug\ErrorHandler -> Symfony\Component\Debug\ErrorHandler
    • Symfony\Component\HttpKernel\Debug\ExceptionHandler -> Symfony\Component\Debug\ExceptionHandler
    • Symfony\Component\HttpKernel\Exception\FatalErrorException -> Symfony\Component\Debug\Exception\FatalErrorException
    • Symfony\Component\HttpKernel\Exception\FlattenException -> Symfony\Component\Debug\Exception\FlattenException

Locale

  • The Locale component was removed and replaced by the Intl component. Instead of the methods in Symfony\Component\Locale\Locale, you should use these equivalent methods in Symfony\Component\Intl\Intl now:

    • Locale::getDisplayCountries() -> Intl::getRegionBundle()->getCountryNames()
    • Locale::getCountries() -> array_keys(Intl::getRegionBundle()->getCountryNames())
    • Locale::getDisplayLanguages() -> Intl::getLanguageBundle()->getLanguageNames()
    • Locale::getLanguages() -> array_keys(Intl::getLanguageBundle()->getLanguageNames())
    • Locale::getDisplayLocales() -> Intl::getLocaleBundle()->getLocaleNames()
    • Locale::getLocales() -> array_keys(Intl::getLocaleBundle()->getLocaleNames())

PropertyAccess

  • Renamed PropertyAccess::getPropertyAccessor to createPropertyAccessor.

    Before:

    use Symfony\Component\PropertyAccess\PropertyAccess;
    
    $accessor = PropertyAccess::getPropertyAccessor();
    

    After:

    use Symfony\Component\PropertyAccess\PropertyAccess;
    
    $accessor = PropertyAccess::createPropertyAccessor();
    

Routing

  • Some route settings have been renamed:

    • The pattern setting for a route has been deprecated in favor of path
    • The _scheme and _method requirements have been moved to the schemes and methods settings

    Before:

    article_edit:
        pattern: /article/{id}
        requirements: { '_method': 'POST|PUT', '_scheme': 'https', 'id': '\d+' }
    
    <route id="article_edit" pattern="/article/{id}">
        <requirement key="_method">POST|PUT</requirement>
        <requirement key="_scheme">https</requirement>
        <requirement key="id">\d+</requirement>
    </route>
    
    $route = new Route();
    $route->setPattern('/article/{id}');
    $route->setRequirement('_method', 'POST|PUT');
    $route->setRequirement('_scheme', 'https');
    

    After:

    article_edit:
        path: /article/{id}
        methods: [POST, PUT]
        schemes: https
        requirements: { 'id': '\d+' }
    
    <route id="article_edit" path="/article/{id}" methods="POST PUT" schemes="https">
        <requirement key="id">\d+</requirement>
    </route>
    
    $route = new Route();
    $route->setPath('/article/{id}');
    $route->setMethods(array('POST', 'PUT'));
    $route->setSchemes('https');
    

Translator

  • The Translator::setFallbackLocale() method has been removed in favor of Translator::setFallbackLocales().

Twig Bridge

  • The render tag is deprecated in favor of the render function.

  • The form_enctype helper was removed. You should use the new form_start function instead.

    Before:

    <form method="post" action="http://example.com" {{ form_enctype(form) }}>
        ...
    </form>
    

    After:

    {{ form_start(form) }}
        ...
    {{ form_end(form) }}
    

    The method and action of the form default to "POST" and the current document. If you want to change these values, you can set them explicitly in the controller.

    Alternative 1:

    $form = $this->createForm('my_form', $formData, array(
        'method' => 'PUT',
        'action' => $this->generateUrl('target_route'),
    ));
    

    Alternative 2:

    $form = $this->createFormBuilder($formData)
        // ...
        ->setMethod('PUT')
        ->setAction($this->generateUrl('target_route'))
        ->getForm();
    

    It is also possible to override the method and the action in the template:

    {{ form_start(form, {'method': 'GET', 'action': 'http://example.com'}) }}
        ...
    {{ form_end(form) }}
    

Validator

  • The constraints Optional and Required were moved to the Symfony\Component\Validator\Constraints\ namespace. You should adapt the path wherever you used them.

    Before:

    use Symfony\Component\Validator\Constraints as Assert;
    
    /**
     * @Assert\Collection({
     *     "foo" = @Assert\Collection\Required(),
     *     "bar" = @Assert\Collection\Optional(),
     * })
     */
    private $property;
    

    After:

    use Symfony\Component\Validator\Constraints as Assert;
    
    /**
     * @Assert\Collection({
     *     "foo" = @Assert\Required(),
     *     "bar" = @Assert\Optional(),
     * })
     */
    private $property;
    

Yaml

  • The ability to pass file names to Yaml::parse() has been removed.

    Before:

    Yaml::parse($fileName);
    

    After:

    Yaml::parse(file_get_contents($fileName));