Sep 9, 2016 · Sep 10, 2016
diff --git a/form/create_form_type_extension.rst b/form/create_form_type_extension.rst
 be applied to. In your case, as you want to extend the ``Symfony\Component\Form\Extension\Core\Type\FileType``
 field type, you will use that as the ``extended_type``.

 ..tip::

    There is an optional tag attribute called ``priority``, which
    defaults to ``0`` and controls the order in which the form
    type extensions are loaded (the higher the priority, the earlier
    an extension is loaded). This is useful when you need to guarantee
    that one extension is loaded before or after another extension.

 Adding the extension Business Logic
 -----------------------------------
Original file line number	Diff line number	Diff line change
Expand Up		@@ -128,6 +128,14 @@ The ``extended_type`` key of the tag is the type of field that this extension sh
		be applied to. In your case, as you want to extend the ``Symfony\Component\Form\Extension\Core\Type\FileType``
		field type, you will use that as the ``extended_type``.

		..tip::

		There is an optional tag attribute called ``priority``, which
		defaults to ``0`` and controls the order in which the form
		type extensions are loaded (the higher the priority, the earlier
		an extension is loaded). This is useful when you need to guarantee
		that one extension is loaded before or after another extension.

		Adding the extension Business Logic
		-----------------------------------

Expand Down