Display a nice error message if the form/serializer component is miss…

…ing.
symfony · nicolas-grekas · Nov 22, 2017 · Nov 21, 2017 · Nov 22, 2017 · 2b45805e0377131eece216acd772da9c8641e413
commit 2b45805e0377131eece216acd772da9c8641e413
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -171,6 +171,10 @@ public function load(array $configs, ContainerBuilder $container)
        }

        if ($this->isConfigEnabled($container, $config['form'])) {
+            if (!class_exists('Symfony\Component\Form\Form')) {
+                throw new LogicException('Form support cannot be enabled as the Form component is not installed.');
+            }
+
            $this->formConfigEnabled = true;
            $this->registerFormConfiguration($config, $container, $loader);
            $config['validation']['enabled'] = true;
@@ -216,6 +220,10 @@ public function load(array $configs, ContainerBuilder $container)
        $this->registerPropertyAccessConfiguration($config['property_access'], $container, $loader);

        if ($this->isConfigEnabled($container, $config['serializer'])) {
+            if (!class_exists('Symfony\Component\Serializer\Serializer')) {
+                throw new LogicException('Serializer support cannot be enabled as the Serializer component is not installed.');
+            }
+
            $this->registerSerializerConfiguration($config['serializer'], $container, $loader);
        }