Merge branch '3.4' into 4.0

* 3.4:
  Update json_login_setup.rst
  Document switch_user.stateless firewall option
  Fixed small typo mistake

Author: javiereguiluz

components/options_resolver.rst

@@ -326,7 +326,7 @@ correctly. To validate the types of the options, call
 
             // check all items in an array recursively for a type
             $resolver->setAllowedTypes('dates', 'DateTime[]');
-            $resolver->setAllowedtypes('ports', 'int[]');
+            $resolver->setAllowedTypes('ports', 'int[]');
         }
     }
 

reference/configuration/security.rst

@@ -283,6 +283,7 @@ Each part will be explained in the next section.
                         provider:             ~
                         parameter:            _switch_user
                         role:                 ROLE_ALLOWED_TO_SWITCH
+                        stateless:            false
 
             access_control:
                 requires_channel:     ~

security/impersonating_user.rst

@@ -66,6 +66,11 @@ firewall listener:
             ),
         ));
 
+.. tip::
+
+    For using the ``switch_user`` listener in a ``stateless`` firewall, set the
+    ``switch_user.stateless`` option to ``true``.
+
 To switch to another user, just add a query string with the ``_switch_user``
 parameter and the username as the value to the current URL:
 

security/json_login_setup.rst

@@ -69,6 +69,7 @@ path:
         // src/Controller/SecurityController.php
 
         // ...
+        use Symfony\Bundle\FrameworkBundle\Controller\Controller;
         use Symfony\Component\HttpFoundation\Request;
         use Symfony\Component\Routing\Annotation\Route;