add documentation for configuring additional monolog channels

Author: xabbuh

cookbook/logging/channels_handlers.rst

@@ -88,6 +88,57 @@ that service is preconfigured to use the channel you've specified.
 For more information - including a full example - read ":ref:`dic_tags-monolog`"
 in the Dependency Injection Tags reference section.
 
+.. _cookbook-monolog-channels-config:
+
+Configure Additional Channels without Tagged Services
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. versionadded:: 2.3
+    Since Symfony 2.3 you can install MonologBundle 2.4 to be able to configure
+    additional channels in the configuration.
+
+With MonologBundle 2.4 you can configure additional channels without the
+need to tag your services:
+
+.. configuration-block::
+
+    .. code-block:: yaml
+
+        # app/config/config.yml
+        monolog:
+            channels: ["foo", "bar"]
+
+    .. code-block:: xml
+
+        <!-- app/config/config.xml -->
+        <container xmlns="http://symfony.com/schema/dic/services"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xmlns:monolog="http://symfony.com/schema/dic/monolog"
+            xsi:schemaLocation="http://symfony.com/schema/dic/services
+                http://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/monolog
+                http://symfony.com/schema/dic/monolog/monolog-1.0.xsd"
+        >
+            <monolog:config>
+                <monolog:channel>foo</monolog:channel>
+                <monolog:channel>bar</monolog:channel>
+            </monolog:config>
+        </container>
+
+    .. code-block:: php
+
+        // app/config/config.php
+        $container->loadFromExtension('monolog', array(
+            'channels' => array(
+                'foo',
+                'bar',
+            ),
+        ));
+
+With this, you can now send log messages to the ``foo`` channel by using
+the automically registered logger service ``monolog.logger.foo``.
+
+
 Learn more from the Cookbook
 ----------------------------
 

reference/dic_tags.rst

@@ -649,6 +649,12 @@ channel when injecting the logger in a service.
         $definition->addTag('monolog.logger', array('channel' => 'acme'));
         $container->register('my_service', $definition);
 
+.. tip::
+    If you use MonologBundle in version 2.4 or above, you are able to configure
+    your custom channels in the application configuration and retrieve the
+    corresponding logger service from the service container directly (see
+    :ref:`cookbook-monolog-channels-config`).
+
 .. _dic_tags-monolog-processor:
 
 monolog.processor