minor #21449 Remove mentions of the deprecated XML format (nicolas-grekas)

This PR was merged into the 8.0 branch.

Discussion
----------

 Remove mentions of the deprecated XML format

Fixes #21447 for branch 8.0 (7.4 might need some inline notes) and #21478.
This removes all mentions of XML that are in relation with configuring routes and services.
Of course this keeps XML for translations, validation, serializer and Doctrine entities, among a few others.

Commits
-------

fffb06d Remove mentions of the deprecated XML format

Author: javiereguiluz

best_practices.rst

@@ -201,7 +201,7 @@ most services will be configured automatically. However, in some edge cases
 you'll need to configure services (or parts of them) manually.
 
 YAML is the format recommended configuring services because it's friendly to
-newcomers and concise, but Symfony also supports XML and PHP configuration.
+newcomers and concise, but Symfony also supports PHP configuration.
 
 Use Attributes to Define the Doctrine Entity Mapping
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -238,7 +238,7 @@ Use Attributes to Configure Routing, Caching, and Security
 
 Using attributes for routing, caching, and security simplifies
 configuration. You don't need to browse several files created with different
-formats (YAML, XML, PHP): all the configuration is just where you  require it,
+formats (YAML, PHP): all the configuration is just where you  require it,
 and it only uses one format.
 
 Use Dependency Injection to Get Services

bundles/best_practices.rst

@@ -427,21 +427,6 @@ The end user can provide values in any configuration file:
         parameters:
             acme_blog.author.email: '[email protected]'
 
-    .. code-block:: xml
-
-        <!-- config/services.xml -->
-        <?xml version="1.0" encoding="UTF-8" ?>
-        <container xmlns="http://symfony.com/schema/dic/services"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
-        >
-            <parameters>
-                <parameter key="acme_blog.author.email">[email protected]</parameter>
-            </parameters>
-
-        </container>
-
     .. code-block:: php
 
         // config/services.php

bundles/configuration.rst

@@ -20,23 +20,6 @@ as integration of other related components:
         framework:
             form: true
 
-    .. code-block:: xml
-
-        <!-- config/packages/framework.xml -->
-        <?xml version="1.0" encoding="UTF-8" ?>
-        <container xmlns="http://symfony.com/schema/dic/services"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xmlns:framework="http://symfony.com/schema/dic/symfony"
-            xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd
-                http://symfony.com/schema/dic/symfony
-                https://symfony.com/schema/dic/symfony/symfony-1.0.xsd"
-        >
-            <framework:config>
-                <framework:form/>
-            </framework:config>
-        </container>
-
     .. code-block:: php
 
         // config/packages/framework.php
@@ -162,23 +145,6 @@ can add some configuration that looks like this:
                 client_id: 123
                 client_secret: your_secret
 
-    .. code-block:: xml
-
-        <!-- config/packages/acme_social.xml -->
-        <?xml version="1.0" encoding="UTF-8" ?>
-        <container xmlns="http://symfony.com/schema/dic/services"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xmlns:acme-social="http://example.org/schema/dic/acme_social"
-            xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
-        >
-            <acme-social:config>
-                <acme-social:twitter client-id="123"
-                    client-secret="your_secret"
-                />
-            </acme-social:config>
-        </container>
-
     .. code-block:: php
 
         // config/packages/acme_social.php
@@ -228,7 +194,7 @@ First things first, you have to create an extension class as explained in
 Whenever a user includes the ``acme_social`` key (which is the DI alias) in a
 configuration file, the configuration under it is added to an array of
 configurations and passed to the ``load()`` method of your extension (Symfony
-automatically converts XML and YAML to an array).
+automatically converts the configuration to an array).
 
 For the configuration example in the previous section, the array passed to your
 ``load()`` method will look like this::
@@ -304,7 +270,7 @@ The ``Configuration`` class to handle the sample configuration looks like::
 .. seealso::
 
     The ``Configuration`` class can be much more complicated than shown here,
-    supporting "prototype" nodes, advanced validation, XML-specific normalization
+    supporting "prototype" nodes, advanced validation, plural/singular normalization
     and advanced merging. You can read more about this in
     :doc:`the Config component documentation </components/config/definition>`. You
     can also see it in action by checking out some core Configuration
@@ -331,37 +297,31 @@ in the ``Configuration`` class to validate, normalize and merge all the
 configuration arrays together.
 
 Now, you can use the ``$config`` variable to modify a service provided by your bundle.
-For example, imagine your bundle has the following example config:
-
-.. code-block:: xml
-
-    <!-- src/config/services.xml -->
-    <?xml version="1.0" encoding="UTF-8" ?>
-    <container xmlns="http://symfony.com/schema/dic/services"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://symfony.com/schema/dic/services
-            https://symfony.com/schema/dic/services/services-1.0.xsd"
-    >
-        <services>
-            <service id="acme_social.twitter_client" class="Acme\SocialBundle\TwitterClient">
-                <argument></argument> <!-- will be filled in with client_id dynamically -->
-                <argument></argument> <!-- will be filled in with client_secret dynamically -->
-            </service>
-        </services>
-    </container>
+For example, imagine your bundle has the following example config::
+
+    // src/Resources/config/services.php
+    namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+    use Acme\SocialBundle\TwitterClient;
+
+    return function (ContainerConfigurator $container) {
+        $container->services()
+            ->set('acme_social.twitter_client', TwitterClient::class)
+                ->args([abstract_arg('client_id'), abstract_arg('client_secret')]);
+    };
 
 In your extension, you can load this and dynamically set its arguments::
 
     // src/DependencyInjection/AcmeSocialExtension.php
     namespace Acme\SocialBundle\DependencyInjection;
 
     use Symfony\Component\Config\FileLocator;
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+    use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 
     public function load(array $configs, ContainerBuilder $container): void
     {
-        $loader = new XmlFileLoader($container, new FileLocator(dirname(__DIR__).'/Resources/config'));
-        $loader->load('services.xml');
+        $loader = new PhpFileLoader($container, new FileLocator(dirname(__DIR__).'/Resources/config'));
+        $loader->load('services.php');
 
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);
@@ -401,7 +361,7 @@ In your extension, you can load this and dynamically set its arguments::
     Using the Config component is fully optional. The ``load()`` method gets an
     array of configuration values. You can instead parse these arrays yourself
     (e.g. by overriding configurations and using :phpfunction:`isset` to check
-    for the existence of a value). Be aware that it'll be very hard to support XML::
+    for the existence of a value)::
 
         public function load(array $configs, ContainerBuilder $container): void
         {
@@ -435,121 +395,6 @@ have something different, your ``Extension`` class must override the
 :method:`Extension::getConfiguration() <Symfony\\Component\\DependencyInjection\\Extension\\Extension::getConfiguration>`
 method and return an instance of your ``Configuration``.
 
-Supporting XML
---------------
-
-Symfony allows people to provide the configuration in three different formats:
-Yaml, XML and PHP. Both Yaml and PHP use the same syntax and are supported by
-default when using the Config component. Supporting XML requires you to do some
-more things. But when sharing your bundle with others, it is recommended that
-you follow these steps.
-
-Make your Config Tree ready for XML
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The Config component provides some methods by default to allow it to correctly
-process XML configuration. See ":ref:`component-config-normalization`" of the
-component documentation. However, you can do some optional things as well, this
-will improve the experience of using XML configuration:
-
-Choosing an XML Namespace
-~~~~~~~~~~~~~~~~~~~~~~~~~
-
-In XML, the `XML namespace`_ is used to determine which elements belong to the
-configuration of a specific bundle. The namespace is returned from the
-:method:`Extension::getNamespace() <Symfony\\Component\\DependencyInjection\\Extension\\Extension::getNamespace>`
-method. By convention, the namespace is a URL (it doesn't have to be a valid
-URL nor does it need to exist). By default, the namespace for a bundle is
-``http://example.org/schema/dic/DI_ALIAS``, where ``DI_ALIAS`` is the DI alias of
-the extension. You might want to change this to a more professional URL::
-
-    // src/DependencyInjection/AcmeHelloExtension.php
-    namespace Acme\HelloBundle\DependencyInjection;
-
-    // ...
-    class AcmeHelloExtension extends Extension
-    {
-        // ...
-
-        public function getNamespace(): string
-        {
-            return 'http://acme_company.com/schema/dic/hello';
-        }
-    }
-
-.. deprecated:: 7.4
-
-    The ``getNamespace()`` method, together with XML support, is deprecated
-    since Symfony 7.4 and will be removed in Symfony 8.0.
-
-    If your bundle needs to remain compatible with older Symfony versions that
-    still support XML, keep this method and add the ``@deprecated`` annotation to it.
-
-Providing an XML Schema
-~~~~~~~~~~~~~~~~~~~~~~~
-
-XML has a very useful feature called `XML schema`_. This allows you to
-describe all possible elements and attributes and their values in an XML Schema
-Definition (an XSD file). This XSD file is used by IDEs for auto completion and
-it is used by the Config component to validate the elements.
-
-In order to use the schema, the XML configuration file must provide an
-``xsi:schemaLocation`` attribute pointing to the XSD file for a certain XML
-namespace. This location always starts with the XML namespace. This XML
-namespace is then replaced with the XSD validation base path returned from
-:method:`Extension::getXsdValidationBasePath() <Symfony\\Component\\DependencyInjection\\Extension\\ExtensionInterface::getXsdValidationBasePath>`
-method. This namespace is then followed by the rest of the path from the base
-path to the file itself.
-
-By convention, the XSD file lives in ``config/schema/`` directory, but you
-can place it anywhere you like. You should return this path as the base path::
-
-    // src/DependencyInjection/AcmeHelloExtension.php
-    namespace Acme\HelloBundle\DependencyInjection;
-
-    // ...
-    class AcmeHelloExtension extends Extension
-    {
-        // ...
-
-        public function getXsdValidationBasePath(): string
-        {
-            return __DIR__.'/../config/schema';
-        }
-    }
-
-.. deprecated:: 7.4
-
-    The ``getXsdValidationBasePath()`` method, together with XML support, is
-    deprecated since Symfony 7.4 and will be removed in Symfony 8.0.
-
-    If your bundle needs to remain compatible with older Symfony versions that
-    still support XML, keep this method and add the ``@deprecated`` annotation to it.
-
-Assuming the XSD file is called ``hello-1.0.xsd``, the schema location will be
-``https://acme_company.com/schema/dic/hello/hello-1.0.xsd``:
-
-.. code-block:: xml
-
-    <!-- config/packages/acme_hello.xml -->
-    <?xml version="1.0" encoding="UTF-8" ?>
-    <container xmlns="http://symfony.com/schema/dic/services"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns:acme-hello="http://acme_company.com/schema/dic/hello"
-        xsi:schemaLocation="http://symfony.com/schema/dic/services
-            https://symfony.com/schema/dic/services/services-1.0.xsd
-            http://acme_company.com/schema/dic/hello
-            https://acme_company.com/schema/dic/hello/hello-1.0.xsd"
-    >
-        <acme-hello:config>
-            <!-- ... -->
-        </acme-hello:config>
-
-        <!-- ... -->
-    </container>
-
 .. _`FrameworkBundle Configuration`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
 .. _`TwigBundle Configuration`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
-.. _`XML namespace`: https://en.wikipedia.org/wiki/XML_namespace
-.. _`XML schema`: https://en.wikipedia.org/wiki/XML_schema
 .. _`snake case`: https://en.wikipedia.org/wiki/Snake_case

bundles/extension.rst

@@ -33,8 +33,8 @@ method to load service definitions from configuration files::
     {
         public function loadExtension(array $config, ContainerConfigurator $container, ContainerBuilder $builder): void
         {
-            // load an XML, PHP or YAML file
-            $container->import('../config/services.xml');
+            // load a PHP or YAML file
+            $container->import('../config/services.php');
 
             // you can also add or replace parameters and services
             $container->parameters()
@@ -143,25 +143,25 @@ container.
 
 In the ``load()`` method, you can use PHP code to register service definitions,
 but it is more common if you put these definitions in a configuration file
-(using the YAML, XML or PHP format).
+(using the YAML or PHP format).
 
-For instance, assume you have a file called ``services.xml`` in the
+For instance, assume you have a file called ``services.php`` in the
 ``config/`` directory of your bundle, your ``load()`` method looks like::
 
     use Symfony\Component\Config\FileLocator;
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+    use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 
     // ...
     public function load(array $configs, ContainerBuilder $container): void
     {
-        $loader = new XmlFileLoader(
+        $loader = new PhpFileLoader(
             $container,
             new FileLocator(__DIR__.'/../../config')
         );
-        $loader->load('services.xml');
+        $loader->load('services.php');
     }
 
-The other available loaders are ``YamlFileLoader`` and ``PhpFileLoader``.
+The other available loader is ``YamlFileLoader``.
 
 Using Configuration to Change the Services
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

bundles/prepend_extension.rst

@@ -108,32 +108,6 @@ registered and the ``entity_manager_name`` setting for ``acme_hello`` is set to
             # ...
             use_acme_goodbye: false
 
-    .. code-block:: xml
-
-        <!-- config/packages/acme_something.xml -->
-        <?xml version="1.0" encoding="UTF-8" ?>
-        <container xmlns="http://symfony.com/schema/dic/services"
-            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-            xmlns:acme-something="http://example.org/schema/dic/acme_something"
-            xmlns:acme-other="http://example.org/schema/dic/acme_other"
-            xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd
-                http://example.org/schema/dic/acme_something
-                https://example.org/schema/dic/acme_something/acme_something-1.0.xsd
-                http://example.org/schema/dic/acme_other
-                https://example.org/schema/dic/acme_something/acme_other-1.0.xsd"
-        >
-            <acme-something:config use-acme-goodbye="false">
-                <!-- ... -->
-                <acme-something:entity-manager-name>non_default</acme-something:entity-manager-name>
-            </acme-something:config>
-
-            <acme-other:config use-acme-goodbye="false">
-                <!-- ... -->
-            </acme-other:config>
-
-        </container>
-
     .. code-block:: php
 
         // config/packages/acme_something.php