Serializer
==========
The *SerializerServiceProvider* provides a service for serializing objects.
Parameters
----------
None.
Services
--------
* **serializer**: An instance of `Symfony\\Component\\Serializer\\Serializer
<http://api.symfony.com/master/Symfony/Component/Serializer/Serializer.html>`_.
* **serializer.encoders**: `Symfony\\Component\\Serializer\\Encoder\\JsonEncoder
<http://api.symfony.com/master/Symfony/Component/Serializer/Encoder/JsonEncoder.html>`_
and `Symfony\\Component\\Serializer\\Encoder\\XmlEncoder
<http://api.symfony.com/master/Symfony/Component/Serializer/Encoder/XmlEncoder.html>`_.
* **serializer.normalizers**: `Symfony\\Component\\Serializer\\Normalizer\\CustomNormalizer
<http://api.symfony.com/master/Symfony/Component/Serializer/Normalizer/CustomNormalizer.html>`_
and `Symfony\\Component\\Serializer\\Normalizer\\GetSetMethodNormalizer
<http://api.symfony.com/master/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.html>`_.
Registering
-----------
.. code-block:: php
$app->register(new Silex\Provider\SerializerServiceProvider());
.. note::
Add the Symfony's `Serializer Component
<http://symfony.com/doc/current/components/serializer.html>`_ as a
dependency:
.. code-block:: bash
composer require symfony/serializer
Usage
-----
The ``SerializerServiceProvider`` provider provides a ``serializer`` service::
use Silex\Application;
use Silex\Provider\SerializerServiceProvider;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
$app = new Application();
$app->register(new SerializerServiceProvider());
// only accept content types supported by the serializer via the assert method.
$app->get("/pages/{id}.{_format}", function (Request $request, $id) use ($app) {
// assume a page_repository service exists that returns Page objects. The
// object returned has getters and setters exposing the state.
$page = $app['page_repository']->find($id);
$format = $request->getRequestFormat();
if (!$page instanceof Page) {
$app->abort("No page found for id: $id");
}
return new Response($app['serializer']->serialize($page, $format), 200, array(
"Content-Type" => $request->getMimeType($format)
));
})->assert("_format", "xml|json")
->assert("id", "\d+");
Using a Cache
-------------
To use a cache, register a class implementing ``Doctrine\Common\Cache\Cache``::
$app->register(new Silex\Provider\SerializerServiceProvider());
$app['serializer.normalizers'] = function () use ($app) {
return [new \Symfony\Component\Serializer\Normalizer\CustomNormalizer(),
new \Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer(new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()), $app['my_custom_cache']))
];
};