Changing description of symfony installation to composer

Sgoettschkes · Sgoettschkes · commit 229dd4f39639 · 2012-11-30T20:26:00.000+01:00
diff --git a/book/from_flat_php_to_symfony2.rst b/book/from_flat_php_to_symfony2.rst
@@ -420,34 +420,29 @@ Why should you have to reinvent solutions to all these routine problems?
 Add a Touch of Symfony2
 ~~~~~~~~~~~~~~~~~~~~~~~
 
-Symfony2 to the rescue. Before actually using Symfony2, you need to make
-sure PHP knows how to find the Symfony2 classes. This is accomplished via
-an autoloader that Symfony provides. An autoloader is a tool that makes it
-possible to start using PHP classes without explicitly including the file
-containing the class.
+Symfony2 to the rescue. Before actually using Symfony2, you need to download
+it. This can be done by using composer, which takes care of downloading the
+correct version and all it's dependencies and provides an autoloader. An 
+autoloader is a tool that makes it possible to start using PHP classes 
+without explicitly including the file containing the class.
 
-First, `download Symfony`_ and place it into a ``vendor/symfony/symfony/`` directory.
-Next, create an ``app/bootstrap.php`` file. Use it to ``require`` the two
-files in the application and to configure the autoloader:
+In your root directory, create a ``composer.json`` file with the following
+content:
 
-.. code-block:: html+php
-
-    <?php
-    // bootstrap.php
-    require_once 'model.php';
-    require_once 'controllers.php';
-    require_once 'vendor/symfony/symfony/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
+.. code-block:: json
 
-    $loader = new Symfony\Component\ClassLoader\UniversalClassLoader();
-    $loader->registerNamespaces(array(
-        'Symfony' => __DIR__.'/../vendor/symfony/symfony/src',
-    ));
-
-    $loader->register();
-
-This tells the autoloader where the ``Symfony`` classes are. With this, you
-can start using Symfony classes without using the ``require`` statement for
-the files that contain them.
+    {
+        "require": {
+            "symfony/symfony": "2.1.*"
+        },
+        "autoload": {
+            "files": ["model.php","controller.php"]
+        }
+    }
+    
+After installing your dependencies, composer has generated ``vendor/autoload.php``,
+which takes care to include all files from the symfony framework as well as
+the files mentioned in the autoload section of your composer.json.
 
 Core to Symfony's philosophy is the idea that an application's main job is
 to interpret each request and return a response. To this end, Symfony2 provides
@@ -460,7 +455,7 @@ the HTTP response being returned. Use them to improve the blog:
 
     <?php
     // index.php
-    require_once 'app/bootstrap.php';
+    require_once 'vendor/bootstrap.php';
 
     use Symfony\Component\HttpFoundation\Request;
     use Symfony\Component\HttpFoundation\Response;
