Update create_custom_field_type.rst

hbgamra · javiereguiluz · commit d887b5aa049d · 2023-03-15T16:19:22.000+01:00
Adding return type for setNormalizer callback function
diff --git a/form/create_custom_field_type.rst b/form/create_custom_field_type.rst
@@ -271,7 +271,8 @@ to define, validate and process their values::
 
             // optionally you can transform the given values for the options to
             // simplify the further processing of those options
-            $resolver->setNormalizer('allowed_states', static function (Options $options, $states) {
+            $resolver->setNormalizer('allowed_states', static function (Options $options, $states): ?array 
+            {
                 if (null === $states) {
                     return $states;
                 }

Original file line number	Diff line number	Diff line change
`@@ -271,7 +271,8 @@ to define, validate and process their values::`
`271`	`271`
`272`	`272`	`// optionally you can transform the given values for the options to`
`273`	`273`	`// simplify the further processing of those options`
`274`		`- $resolver->setNormalizer('allowed_states', static function (Options $options, $states) {`
	`274`	`+ $resolver->setNormalizer('allowed_states', static function (Options $options, $states): ?array`
	`275`	`+ {`
`275`	`276`	`if (null === $states) {`
`276`	`277`	`return $states;`
`277`	`278`	`}`