allow forms without translations and validator

Author: xabbuh

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -74,6 +74,7 @@
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
 use Symfony\Component\Translation\Command\XliffLintCommand as BaseXliffLintCommand;
+use Symfony\Component\Translation\Translator;
 use Symfony\Component\Validator\ConstraintValidatorInterface;
 use Symfony\Component\Validator\ObjectInitializerInterface;
 use Symfony\Component\WebLink\HttpHeaderSerializer;
@@ -189,15 +190,13 @@ public function load(array $configs, ContainerBuilder $container)
                 throw new LogicException('Translation support cannot be enabled as the Translation component is not installed.');
             }
 
-            if (!class_exists('Symfony\Component\Translation\Translator') && $this->isConfigEnabled($container, $config['form'])) {
-                throw new LogicException('Form support cannot be enabled as the Translation component is not installed.');
-            }
-
             if (!class_exists('Symfony\Component\Translation\Translator') && $this->isConfigEnabled($container, $config['validation'])) {
                 throw new LogicException('Validation support cannot be enabled as the Translation component is not installed.');
             }
 
-            $loader->load('identity_translator.xml');
+            if (class_exists(Translator::class)) {
+                $loader->load('identity_translator.xml');
+            }
         }
 
         if (isset($config['secret'])) {
@@ -250,7 +249,10 @@ public function load(array $configs, ContainerBuilder $container)
             $config['validation']['enabled'] = true;
 
             if (!class_exists('Symfony\Component\Validator\Validation')) {
-                throw new LogicException('The Validator component is required to use the Form component.');
+                $container->setParameter('validator.translation_domain', 'validators');
+
+                $container->removeDefinition('form.type_extension.form.validator');
+                $container->removeDefinition('form.type_guesser.validator');
             }
         } else {
             $container->removeDefinition('Symfony\Component\Form\Command\DebugCommand');
@@ -448,6 +450,10 @@ private function registerFormConfiguration($config, ContainerBuilder $container,
         } else {
             $container->setParameter('form.type_extension.csrf.enabled', false);
         }
+
+        if (!class_exists(Translator::class)) {
+            $container->removeDefinition('form.type_extension.upload.validator');
+        }
     }
 
     /**

src/Symfony/Bundle/FrameworkBundle/Resources/config/form_csrf.xml

@@ -12,7 +12,7 @@
             <argument type="service" id="security.csrf.token_manager" />
             <argument>%form.type_extension.csrf.enabled%</argument>
             <argument>%form.type_extension.csrf.field_name%</argument>
-            <argument type="service" id="translator" />
+            <argument type="service" id="translator" on-invalid="null" />
             <argument>%validator.translation_domain%</argument>
             <argument type="service" id="form.server_params" />
         </service>