minor #18003 [Attributes] Add attributes overview (alexandre-daubois)

This PR was merged into the 5.4 branch.

Discussion
----------

[Attributes] Add attributes overview

Fixes #17981. Once merged, I'll full-fill the page for 6.2 and 6.3 👍

Commits
-------

46981e7 [Attributes] Add attributes overview

Author: OskarStark

components/serializer.rst

@@ -465,6 +465,8 @@ If some serialization groups are set, only attributes allowed by those groups ca
 
 As for groups, attributes can be selected during both the serialization and deserialization process.
 
+.. _serializer_ignoring-attributes:
+
 Ignoring Attributes
 -------------------
 
@@ -677,6 +679,8 @@ processes::
     $anne = $normalizer->denormalize(['first_name' => 'Anne'], 'Person');
     // Person object with firstName: 'Anne'
 
+.. _serializer_name-conversion:
+
 Configure name conversion using metadata
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -1436,6 +1440,8 @@ having unique identifiers::
     var_dump($serializer->serialize($org, 'json'));
     // {"name":"Les-Tilleuls.coop","members":[{"name":"K\u00e9vin", organization: "Les-Tilleuls.coop"}]}
 
+.. _serializer_handling-serialization-depth:
+
 Handling Serialization Depth
 ----------------------------
 
@@ -1751,6 +1757,8 @@ will be thrown. The type enforcement of the properties can be disabled by settin
 the serializer context option ``ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT``
 to ``true``.
 
+.. _serializer_interfaces-and-abstract-classes:
+
 Serializing Interfaces and Abstract Classes
 -------------------------------------------
 

console.rst

@@ -217,6 +217,8 @@ available in the ``configure()`` method::
         }
     }
 
+.. _console_registering-the-command:
+
 Registering the Command
 ~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -548,13 +550,13 @@ call ``setAutoExit(false)`` on it to get the command result in ``CommandTester``
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        
+
 
 .. caution::
 
     When testing ``InputOption::VALUE_NONE`` command options, you must pass an
     empty value to them::
-    
+
         $commandTester = new CommandTester($command);
         $commandTester->execute(['--some-option' => '']);
 

event_dispatcher.rst

@@ -143,6 +143,8 @@ listener class:
        method (which makes event listeners invokable);
     #. If the ``__invoke()`` method is not defined either, throw an exception.
 
+.. _event-dispatcher_event-listener-attributes:
+
 Defining Event Listeners with PHP Attributes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

reference/attributes.rst

@@ -0,0 +1,77 @@
+.. index::
+    single: Attributes
+
+Symfony Attributes Overview
+===========================
+
+Attributes are the successor of annotation since PHP 8. Attributes are native
+to the language and Symfony takes full advantage of them across the framework
+ans its different components.
+
+Doctrine Bridge
+~~~~~~~~~~~~~~~
+
+* :doc:`UniqueEntity </reference/constraints/UniqueEntity>`
+
+Command
+~~~~~~~
+
+* :ref:`AsCommand <console_registering-the-command>`
+
+Contracts
+~~~~~~~~~
+
+* :ref:`Required <autowiring-calls>`
+* :ref:`SubscribedService <service-subscribers-service-subscriber-trait>`
+
+Dependency Injection
+~~~~~~~~~~~~~~~~~~~~
+
+* :ref:`AsTaggedItem <tags_as-tagged-item>`
+* :ref:`Autoconfigure <lazy-services_configuration>`
+* :ref:`AutoconfigureTag <di-instanceof>`
+* :ref:`TaggedIterator <tags_reference-tagged-services>`
+* :ref:`TaggedLocator <service-subscribers-locators_defining-service-locator>`
+* :ref:`Target <autowiring-multiple-implementations-same-type>`
+* :ref:`When <service-container_limiting-to-env>`
+
+EventDispatcher
+~~~~~~~~~~~~~~~
+
+* :ref:`AsEventListener <event-dispatcher_event-listener-attributes>`
+
+HttpKernel
+~~~~~~~~~~
+
+* :doc:`AsController </controller/service>`
+
+Messenger
+~~~~~~~~~
+
+* :ref:`AsMessageHandler <messenger-handler>`
+
+Routing
+~~~~~~~
+
+* :doc:`Route </routing>`
+
+Security
+~~~~~~~~
+
+* :ref:`CurrentUser <security-json-login>`
+
+Serializer
+~~~~~~~~~~
+
+* :ref:`Context <serializer_serializer-context>`
+* :ref:`DiscriminatorMap <serializer_interfaces-and-abstract-classes>`
+* :ref:`Groups <component-serializer-attributes-groups-annotations>`
+* :ref:`Ignore <serializer_ignoring-attributes>`
+* :ref:`MaxDepth <serializer_handling-serialization-depth>`
+* :ref:`SerializedName <serializer_name-conversion>`
+
+Validator
+~~~~~~~~~
+
+Each validation constraint comes with a PHP attribute. See
+:doc:`/reference/constraints` for a full list of validation constraints.

reference/map.rst.inc

@@ -36,4 +36,5 @@ Others
 * :doc:`Configuring the Kernel </reference/configuration/kernel>`
 * :doc:`Twig Extensions (forms, filters, tags, etc) Reference </reference/twig_reference>`
 * :doc:`/reference/dic_tags`
+* :doc:`Symfony Attributes Overview </reference/attributes>`
 * :doc:`/reference/events`

serializer.rst

@@ -99,6 +99,8 @@ possible to set the priority of the tag in order to decide the matching order.
     ``DateTime`` or ``DateTimeImmutable`` classes to avoid excessive memory
     usage and exposing internal details.
 
+.. _serializer_serializer-context:
+
 Serializer Context
 ------------------
 

service_container.rst

@@ -242,6 +242,8 @@ each time you ask for it.
     If you'd prefer to manually wire your service, that's totally possible: see
     :ref:`services-explicitly-configure-wire-services`.
 
+.. _service-container_limiting-to-env:
+
 Limiting Services to a specific Symfony Environment
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

service_container/autowiring.rst

@@ -398,6 +398,8 @@ dealing with the ``TransformerInterface``.
 
     The support of union and intersection types was introduced in Symfony 5.4.
 
+.. _autowiring-multiple-implementations-same-type:
+
 Dealing with Multiple Implementations of the Same Type
 ------------------------------------------------------
 

service_container/service_subscribers_locators.rst

@@ -243,6 +243,8 @@ service type to a service.
     The ``key`` attribute can be omitted if the service name internally is the
     same as in the service container.
 
+.. _service-subscribers-locators_defining-service-locator:
+
 Defining a Service Locator
 --------------------------
 
@@ -695,6 +697,8 @@ attribute to the locator service defining the name of this custom method:
     going to be used, a configuration key (``key`` in the example above) must
     be set so the custom method may be called as a fallback.
 
+.. _service-subscribers-service-subscriber-trait:
+
 Service Subscriber Trait
 ------------------------
 

service_container/tags.rst

@@ -571,6 +571,8 @@ than one tag. You tag a service twice or more with the ``app.mail_transport``
 tag. The second ``foreach`` loop iterates over the ``app.mail_transport``
 tags set for the current service and gives you the attributes.
 
+.. _tags_reference-tagged-services:
+
 Reference Tagged Services
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -1013,6 +1015,8 @@ array element. For example, to retrieve the ``handler_two`` handler::
                 ;
             };
 
+.. _tags_as-tagged-item:
+
 The ``#[AsTaggedItem]`` attribute
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~