Merge branch '5.1' into 5.x

* 5.1:
  Throw Exception if twig variable is not found

Author: javiereguiluz

reference/configuration/twig.rst

@@ -358,6 +358,8 @@ the directory defined in the :ref:`default_path option <config-twig-default-path
 
 Read more about :ref:`template directories and namespaces <templates-namespaces>`.
 
+.. _config-twig-strict-variables:
+
 strict_variables
 ~~~~~~~~~~~~~~~~
 

templates.rst

@@ -164,7 +164,9 @@ in the following order:
 #. ``$foo->getBar()`` (object and *getter* method);
 #. ``$foo->isBar()`` (object and *isser* method);
 #. ``$foo->hasBar()`` (object and *hasser* method);
-#. If none of the above exists, use ``null``.
+#. If none of the above exists, use ``null`` (or throw a ``Twig\Error\RuntimeError``
+   exception if the :ref:`strict_variables <config-twig-strict-variables>`
+   option is enabled).
 
 This allows to evolve your application code without having to change the
 template code (you can start with array variables for the application proof of