Merge branch '4.3' into 4.4

* 4.3:
  Added example for direct form submit with validation

Author: javiereguiluz

form/direct_submit.rst

@@ -51,6 +51,9 @@ control over when exactly your form is submitted and what data is passed to it::
 .. caution::
 
     When the second parameter ``$clearMissing`` is ``false``, like with the
-    "PATCH" method, the validation extension will only handle the submitted
-    fields. If the underlying data needs to be validated, this should be done
-    manually, i.e. using the validator.
+    "PATCH" method, the validation will only apply to the submitted fields. If
+    you need to validate all the underlying data, add the required fields
+    manually so that they are validated::
+
+        // 'email' and 'username' are added manually to force their validation
+        $form->submit(array_merge(['email' => null, 'username' => null], $request->request->all()), false);