Merge pull request #1458 from Burgov/override-forms

weaverryan · weaverryan · commit 03c6796c0368 · 2012-06-21T09:28:32.000-07:00
Override forms
diff --git a/cookbook/bundles/override.rst b/cookbook/bundles/override.rst
@@ -99,7 +99,19 @@ In progress...
 Forms
 -----
 
-In progress...
+In order to override a form type, it has to be registered as a service (meaning
+it is tagged as "form.type"). You can then override it as you would override any
+service as explained in "Services & Configuration". This, of course, will only
+work if the type is referred to by its alias rather than being instantiated,
+e.g.:
+
+.. code-block:: php
+    $builder->add('name', 'custom_type');
+
+rather than
+
+.. code-block:: php
+    $builder->add('name', new CustomType());
 
 Validation metadata
 -------------------
