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Merge branch '2.7'
* 2.7: (36 commits) Fixing bad reference [#4743] parts -> part - subjective, but this sounds slightly better to me Update web_server_configuration.rst Update web_server_configuration.rst Update web_server_configuration.rst Add exception to console exception log [#4454] Re-wording section, but it may not actually be accurate More concrete explanation of validation groups Adding missing index/map documents [#4611] A few more tweaks and fixes Basically copying a section about upgrading other libraries down into the minor version section [#4611] Removing a few entries I meant to remove before [#4611] Making many tweaks thanks to guys like Javier, Wouter, Christian (xabbuh) and Stof Adding a guide about upgrading Fix typo and remove redundant sentence Formatting fix document the `2.5` validation options [Reference] Add default_locale config description Clarify tip for creating a new AppBundle Update forms.rst ...
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‎best_practices/creating-the-project.rst

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@@ -152,8 +152,7 @@ that follows these best practices:
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.. tip::
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If you are using Symfony 2.6 or a newer version, the ``AppBundle`` bundle
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is already generated for you. If you are using an older Symfony version,
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If your Symfony installation doesn't come with a pre-generated ``AppBundle``,
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you can generate it by hand executing this command:
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.. code-block:: bash

‎best_practices/forms.rst

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@@ -13,8 +13,8 @@ Building Forms
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Define your forms as PHP classes.
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The Form component allows you to build forms right inside your controller
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code. Honestly, unless you need to reuse the form somewhere else, that's
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totally fine. But for organization and reuse, we recommend that you define each
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code. This is perfectly fine if you don't need to reuse the form somewhere else.
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But for organization and reuse, we recommend that you define each
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form in its own PHP class::
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namespace AppBundle\Form;

‎best_practices/templates.rst

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@@ -153,6 +153,7 @@ name is irrelevant because you never use it in your own code):
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app.twig.app_extension:
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class: AppBundle\Twig\AppExtension
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arguments: ["@markdown"]
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public: false
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tags:
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- { name: twig.extension }
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‎book/forms.rst

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@@ -526,6 +526,7 @@ to an array callback::
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use Symfony\Component\OptionsResolver\OptionsResolverInterface;
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// ...
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public function setDefaultOptions(OptionsResolverInterface $resolver)
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{
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$resolver->setDefaults(array(
@@ -541,23 +542,51 @@ This will call the static method ``determineValidationGroups()`` on the
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The Form object is passed as an argument to that method (see next example).
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You can also define whole logic inline by using a ``Closure``::
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use Acme\AcmeBundle\Entity\Client;
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use Symfony\Component\Form\FormInterface;
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use Symfony\Component\OptionsResolver\OptionsResolverInterface;
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// ...
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public function setDefaultOptions(OptionsResolverInterface $resolver)
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{
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$resolver->setDefaults(array(
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'validation_groups' => function(FormInterface $form) {
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$data = $form->getData();
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if (Entity\Client::TYPE_PERSON == $data->getType()) {
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if (Client::TYPE_PERSON == $data->getType()) {
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return array('person');
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} else {
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return array('company');
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}
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return array('company');
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},
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));
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}
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Using the ``validation_groups`` option overrides the default validation
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group which is being used. If you want to validate the default constraints
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of the entity as well you have to adjust the option as follows::
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use Acme\AcmeBundle\Entity\Client;
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use Symfony\Component\Form\FormInterface;
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use Symfony\Component\OptionsResolver\OptionsResolverInterface;
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// ...
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public function setDefaultOptions(OptionsResolverInterface $resolver)
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{
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$resolver->setDefaults(array(
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'validation_groups' => function(FormInterface $form) {
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$data = $form->getData();
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if (Client::TYPE_PERSON == $data->getType()) {
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return array('Default', 'person');
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}
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return array('Default', 'company');
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},
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));
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}
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You can find more information about how the validation groups and the default constraints
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work in the book section about :ref:`validation groups <book-validation-validation-groups>`.
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.. index::
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single: Forms; Validation groups based on clicked button
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‎book/http_cache.rst

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@@ -333,7 +333,14 @@ its creation more manageable::
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// set a custom Cache-Control directive
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$response->headers->addCacheControlDirective('must-revalidate', true);
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Public vs private Responses
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.. tip::
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If you need to set cache headers for many different controller actions,
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you might want to look into the FOSHttpCacheBundle_. It provides a way
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to define cache headers based on the URL pattern and other request
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properties.
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Public vs Private Responses
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Both gateway and proxy caches are considered "shared" caches as the cached
@@ -399,9 +406,10 @@ header when none is set by the developer by following these rules:
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``private`` directive automatically (except when ``s-maxage`` is set).
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.. _http-expiration-validation:
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.. _http-expiration-and-validation:
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HTTP Expiration and Validation
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------------------------------
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HTTP Expiration, Validation and Invalidation
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--------------------------------------------
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The HTTP specification defines two caching models:
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header) to check if the page has changed since being cached.
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The goal of both models is to never generate the same response twice by relying
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on a cache to store and return "fresh" responses.
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on a cache to store and return "fresh" responses. To achieve long caching times
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but still provide updated content immediately, *cache invalidation* is
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sometimes used.
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.. sidebar:: Reading the HTTP Specification
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@@ -772,7 +782,7 @@ at some interval (the expiration) to verify that the content is still valid.
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annotations. See the `FrameworkExtraBundle documentation`_.
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.. index::
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pair: Cache; Configuration
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pair: Cache; Configuration
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777787
More Response Methods
778788
~~~~~~~~~~~~~~~~~~~~~
@@ -800,8 +810,110 @@ Additionally, most cache-related HTTP headers can be set via the single
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));
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.. index::
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single: Cache; ESI
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single: ESI
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single: Cache; Invalidation
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.. _http-cache-invalidation:
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Cache Invalidation
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~~~~~~~~~~~~~~~~~~
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"There are only two hard things in Computer Science: cache invalidation
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and naming things." -- Phil Karlton
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Once an URL is cached by a gateway cache, the cache will not ask the
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application for that content anymore. This allows the cache to provide fast
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responses and reduces the load on your application. However, you risk
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delivering outdated content. A way out of this dilemma is to use long
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cache lifetimes, but to actively notify the gateway cache when content
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changes. Reverse proxies usually provide a channel to receive such
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notifications, typically through special HTTP requests.
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.. caution::
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While cache invalidation is powerful, avoid it when possible. If you fail
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to invalidate something, outdated caches will be served for a potentially
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long time. Instead, use short cache lifetimes or use the validation model,
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and adjust your controllers to perform efficient validation checks as
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explained in :ref:`optimizing-cache-validation`.
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Furthermore, since invalidation is a topic specific to each type of reverse
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proxy, using this concept will tie you to a specific reverse proxy or need
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additional efforts to support different proxies.
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Sometimes, however, you need that extra performance you can get when
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explicitly invalidating. For invalidation, your application needs to detect
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when content changes and tell the cache to remove the URLs which contain
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that data from its cache.
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.. tip::
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If you want to use cache invalidation, have a look at the
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`FOSHttpCacheBundle`_. This bundle provides services to help with various
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cache invalidation concepts, and also documents the configuration for the
853+
a couple of common caching proxies.
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If one content corresponds to one URL, the ``PURGE`` model works well.
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You send a request to the cache proxy with the HTTP method ``PURGE`` (using
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the word "PURGE" is a convention, technically this can be any string) instead
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of ``GET`` and make the cache proxy detect this and remove the data from the
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cache instead of going to Symfony to get a response.
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Here is how you can configure the Symfony reverse proxy to support the
862+
``PURGE`` HTTP method::
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864+
// app/AppCache.php
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866+
// ...
867+
use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
870+
871+
class AppCache extends HttpCache
872+
{
873+
protected function invalidate(Request $request, $catch = false)
874+
{
875+
if ('PURGE' !== $request->getMethod()) {
876+
return parent::invalidate($request, $catch);
877+
}
878+
879+
if ('127.0.0.1' !== $request->getClientIp()) {
880+
return new Response('Invalid HTTP method', Response::HTTP_BAD_REQUEST);
881+
}
882+
883+
$response = new Response();
884+
if ($this->getStore()->purge($request->getUri())) {
885+
$response->setStatusCode(200, 'Purged');
886+
} else {
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$response->setStatusCode(200, 'Not found');
888+
}
889+
890+
return $response;
891+
}
892+
}
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.. caution::
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You must protect the ``PURGE`` HTTP method somehow to avoid random people
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purging your cached data.
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**Purge** instructs the cache to drop a resource in *all its variants*
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(according to the ``Vary`` header, see above). An alternative to purging is
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**refreshing** a content. Refreshing means that the caching proxy is
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instructed to discard its local cache and fetch the content again. This way,
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the new content is already available in the cache. The drawback of refreshing
904+
is that variants are not invalidated.
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In many applications, the same content bit is used on various pages with
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different URLs. More flexible concepts exist for those cases:
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* **Banning** invalidates responses matching regular expressions on the
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URL or other criteria;
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* **Cache tagging** lets you add a tag for each content used in a response
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so that you can invalidate all URLs containing a certain content.
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.. index::
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single: Cache; ESI
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single: ESI
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.. _edge-side-includes:
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of ``continue`` indicating that, in the event of a failure, the gateway cache
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will simply remove the ESI tag silently.
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1051-
.. index::
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single: Cache; Invalidation
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1054-
.. _http-cache-invalidation:
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1056-
Cache Invalidation
1057-
------------------
1058-
1059-
"There are only two hard things in Computer Science: cache invalidation
1060-
and naming things." -- Phil Karlton
1061-
1062-
You should never need to invalidate cached data because invalidation is already
1063-
taken into account natively in the HTTP cache models. If you use validation,
1064-
you never need to invalidate anything by definition; and if you use expiration
1065-
and need to invalidate a resource, it means that you set the expires date
1066-
too far away in the future.
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.. note::
1069-
1070-
Since invalidation is a topic specific to each type of reverse proxy,
1071-
if you don't worry about invalidation, you can switch between reverse
1072-
proxies without changing anything in your application code.
1073-
1074-
Actually, all reverse proxies provide ways to purge cached data, but you
1075-
should avoid them as much as possible. The most standard way is to purge the
1076-
cache for a given URL by requesting it with the special ``PURGE`` HTTP method.
1077-
1078-
Here is how you can configure the Symfony reverse proxy to support the
1079-
``PURGE`` HTTP method::
1080-
1081-
// app/AppCache.php
1082-
1083-
// ...
1084-
use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache;
1085-
use Symfony\Component\HttpFoundation\Request;
1086-
use Symfony\Component\HttpFoundation\Response;
1087-
1088-
class AppCache extends HttpCache
1089-
{
1090-
protected function invalidate(Request $request, $catch = false)
1091-
{
1092-
if ('PURGE' !== $request->getMethod()) {
1093-
return parent::invalidate($request, $catch);
1094-
}
1095-
1096-
$response = new Response();
1097-
if ($this->getStore()->purge($request->getUri())) {
1098-
$response->setStatusCode(Response::HTTP_OK, 'Purged');
1099-
} else {
1100-
$response->setStatusCode(Response::HTTP_NOT_FOUND, 'Not purged');
1101-
}
1102-
1103-
return $response;
1104-
}
1105-
}
1106-
1107-
.. versionadded:: 2.4
1108-
Support for HTTP status code constants was introduced in Symfony 2.4.
1109-
1110-
.. caution::
1111-
1112-
You must protect the ``PURGE`` HTTP method somehow to avoid random people
1113-
purging your cached data.
1114-
11151163
Summary
11161164
-------
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@@ -1139,3 +1187,4 @@ Learn more from the Cookbook
11391187
.. _`P6 - Caching: Browser and intermediary caches`: http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache
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.. _`FrameworkExtraBundle documentation`: http://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/cache.html
11411189
.. _`ESI`: http://www.w3.org/TR/esi-lang
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.. _`FOSHttpCacheBundle`: http://foshttpcachebundle.readthedocs.org/

‎book/security.rst

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11481148
return $collection;
11491149
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And that's it! By sending a user to ``/logout`` (or whatever you configure
1151-
the ``path`` to be), Symfony will un-authenticate the current user. and
1152-
redirect them the homepage (the value defined by ``target``).
1151+
the ``path`` to be), Symfony will un-authenticate the current user.
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11541153
Once the user has been logged out, they will be redirected to whatever path
11551154
is defined by the ``target`` parameter above (e.g. the ``homepage``).

‎book/validation.rst

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817817
that belong to no other group.
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819819
``User``
820-
Equivalent to all constraints of the ``User`` object in the ``Default`` group.
820+
Equivalent to all constraints of the ``User`` object in the ``Default``
821+
group. This is always the name of the class. The difference between this
822+
and ``Default`` is explained below.
821823

822824
``registration``
823825
Contains the constraints on the ``email`` and ``password`` fields only.
824826

827+
Constraints in the ``Default`` group of a class are the constraints that have either no
828+
explicit group configured or that are configured to a group equal to the class name or
829+
the string ``Default``.
830+
831+
.. caution::
832+
833+
When validating *just* the User object, there is no difference between the ``Default`` group
834+
and the ``User`` group. But, there is a difference if ``User`` has embedded objects. For example,
835+
imagine ``User`` has an ``address`` property that contains some ``Address`` object and that
836+
you've added the :doc:`/reference/constraints/Valid` constraint to this property so that it's
837+
validated when you validate the ``User`` object.
838+
839+
If you validate ``User`` using the ``Default`` group, then any constraints on the ``Address``
840+
class that are in the ``Default`` group *will* be used. But, if you validate ``User`` using the
841+
``User`` validation group, then only constraints on the ``Address`` class with the ``User``
842+
group will be validated.
843+
844+
In other words, the ``Default`` group and the class name group (e.g. ``User``) are identical,
845+
except when the class is embedded in another object that's actually the one being validated.
846+
847+
If you have inheritance (e.g. ``User extends BaseUser``) and you validate
848+
with the class name of the subclass (i.e. ``User``), then all constraints
849+
in the ``User`` and ``BaseUser`` will be validated. However, if you validate
850+
using the base class (i.e. ``BaseUser``), then only the constraints in
851+
the ``BaseUser`` group will be validated.
852+
825853
To tell the validator to use a specific group, pass one or more group names
826854
as the third argument to the ``validate()`` method::
827855

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