minor #12066 [Configuration] Simplified how default env vars are defined (javiereguiluz)

javiereguiluz · javiereguiluz · commit 1ce3b45995ae · 2019-07-31T10:14:33.000+02:00
This PR was squashed before being merged into the 4.3 branch (closes #12066). Discussion ---------- [Configuration] Simplified how default env vars are defined Changes according to @nicolas-grekas' comments in https://twitter.com/arnolanglade/status/1156107440775192576 Commits ------- 9581c06 [Configuration] Simplified how default env vars are defined
diff --git a/configuration.rst b/configuration.rst
@@ -488,33 +488,12 @@ This example shows how to configure the database connection using an env var:
 The next step is to define the value of those env vars in your shell, your web
 server, etc. This is explained in the following sections, but to protect your
 application from undefined env vars, you can give them a default value using the
-``parameters`` key:
+``.env`` file:
 
-.. configuration-block::
-
-    .. code-block:: yaml
-
-        # config/services.yaml
-        parameters:
-            env(DATABASE_URL): 'sqlite:///%kernel.project_dir%/var/data.db'
-
-    .. 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="env(DATABASE_URL)">sqlite:///%kernel.project_dir%/var/data.db</parameter>
-            </parameters>
-        </container>
-
-    .. code-block:: php
+.. code-block:: bash
 
-        // config/services.php
-        $container->setParameter('env(DATABASE_URL)', 'sqlite:///%kernel.project_dir%/var/data.db');
+    # .env
+    DATABASE_URL=sqlite:///%kernel.project_dir%/var/data.db
 
 .. seealso::
 
