minor #7931 Added alternative syntax using getClickedButton() (ThomasLandauer, javiereguiluz, HeahDude)

This PR was merged into the 2.7 branch.

Discussion
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Added alternative syntax using getClickedButton()

Commits
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22314eb minor fix
7ecff64 Minor formatting changes
9417432 Added alternative syntax using getClickedButton()

Author: wouterj

form/multiple_buttons.rst

@@ -31,3 +31,12 @@ querying if the "Save and add" button was clicked::
 
         return $this->redirectToRoute($nextAction);
     }
+    
+Or you can get the button's name by using the 
+:method:`Symfony\\Component\\Form\\Form::getClickedButton` method of the form::
+    
+    if ($form->getClickedButton() && 'saveAndAdd' === $form->getClickedButton()->getName()) {
+        // ...
+    }
+    
+