minor #10936 Update data_transformers.rst (sela)

javiereguiluz · javiereguiluz · commit 2cecb41a1c42 · 2019-01-28T17:28:52.000+01:00
This PR was submitted for the 4.2 branch but it was merged into the 3.4 branch instead (closes #10936). Discussion ---------- Update data_transformers.rst  Commits ------- 4f8f825 Update data_transformers.rst
diff --git a/form/data_transformers.rst b/form/data_transformers.rst
@@ -344,6 +344,7 @@ First, create the custom field type class::
     use AppBundle\Form\DataTransformer\IssueToNumberTransformer;
     use Doctrine\Common\Persistence\ObjectManager;
     use Symfony\Component\Form\AbstractType;
+    use Symfony\Component\Form\Extension\Core\Type\TextType;
     use Symfony\Component\Form\FormBuilderInterface;
     use Symfony\Component\OptionsResolver\OptionsResolver;
 
