Allow specifying a callable as the CollectionType "prototype_name" option

adrolter · adrolter · commit bbe1581d578c · 2024-05-29T17:58:15.000-04:00
diff --git a/src/Symfony/Component/Form/CHANGELOG.md b/src/Symfony/Component/Form/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.2
+---
+
+ * Allow specifying `prototype_name` option of `CollectionType` as a `callable` (resolved value stored as `resolved_prototype_name` config attribute)
+
 7.1
 ---
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
@@ -25,17 +25,20 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $resizePrototypeOptions = null;
         if ($options['allow_add'] && $options['prototype']) {
+            $prototypeName = \is_callable($options['prototype_name']) ? $options['prototype_name']() : $options['prototype_name'];
+            $builder->setAttribute('resolved_prototype_name', $prototypeName);
+
             $resizePrototypeOptions = array_replace($options['entry_options'], $options['prototype_options']);
             $prototypeOptions = array_replace([
                 'required' => $options['required'],
-                'label' => $options['prototype_name'].'label__',
+                'label' => $prototypeName.'label__',
             ], $resizePrototypeOptions);
 
             if (null !== $options['prototype_data']) {
                 $prototypeOptions['data'] = $options['prototype_data'];
             }
 
-            $prototype = $builder->create($options['prototype_name'], $options['entry_type'], $prototypeOptions);
+            $prototype = $builder->create($prototypeName, $options['entry_type'], $prototypeOptions);
             $builder->setAttribute('prototype', $prototype->getForm());
         }
 
@@ -121,6 +124,7 @@ public function configureOptions(OptionsResolver $resolver): void
         $resolver->setNormalizer('entry_options', $entryOptionsNormalizer);
 
         $resolver->setAllowedTypes('delete_empty', ['bool', 'callable']);
+        $resolver->setAllowedTypes('prototype_name', ['string', 'callable']);
         $resolver->setAllowedTypes('prototype_options', 'array');
         $resolver->setAllowedTypes('keep_as_list', ['bool']);
     }
