[Form] Add form type guesser for EnumType

Author: mttsch

DependencyInjection/FrameworkExtension.php

@@ -83,6 +83,7 @@
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Finder\Glob;
+use Symfony\Component\Form\EnumFormTypeGuesser;
 use Symfony\Component\Form\Extension\HtmlSanitizer\Type\TextTypeHtmlSanitizerExtension;
 use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormTypeExtensionInterface;
@@ -880,6 +881,10 @@ private function registerFormConfiguration(array $config, ContainerBuilder $cont
     {
         $loader->load('form.php');
 
+        if (!class_exists(EnumFormTypeGuesser::class)) {
+            $container->removeDefinition('form.type_guesser.enum_type');
+        }
+
         if (null === $config['form']['csrf_protection']['enabled']) {
             $this->writeConfigEnabled('form.csrf_protection', $config['csrf_protection']['enabled'], $config['form']['csrf_protection']);
         }

Resources/config/form.php

@@ -14,6 +14,7 @@
 use Symfony\Component\Form\ChoiceList\Factory\CachingFactoryDecorator;
 use Symfony\Component\Form\ChoiceList\Factory\DefaultChoiceListFactory;
 use Symfony\Component\Form\ChoiceList\Factory\PropertyAccessDecorator;
+use Symfony\Component\Form\EnumFormTypeGuesser;
 use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
 use Symfony\Component\Form\Extension\Core\Type\ColorType;
 use Symfony\Component\Form\Extension\Core\Type\FileType;
@@ -76,6 +77,9 @@
             ->args([service('validator.mapping.class_metadata_factory')])
             ->tag('form.type_guesser')
 
+        ->set('form.type_guesser.enum_type', EnumFormTypeGuesser::class)
+            ->tag('form.type_guesser')
+
         ->alias('form.property_accessor', 'property_accessor')
 
         ->set('form.choice_list_factory.default', DefaultChoiceListFactory::class)