[LiveComponent] add controller tag and default metadata values for all service declaration types

src/LiveComponent/src/DependencyInjection/Compiler/AddControllerTagToLiveComponentPass.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\UX\LiveComponent\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+final class AddControllerTagToLiveComponentPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container): void
+    {
+        foreach ($container->findTaggedServiceIds('twig.component') as $id => $component) {
+            if (!($component[0]['live'] ?? false)) {
+                continue;
+            }
+
+            $definition = $container->getDefinition($id);
+
+            if (!$definition->hasTag('controller.service_arguments')) {
+                $definition->addTag('controller.service_arguments');
+            }
+        }
+    }
+}

src/LiveComponent/src/DependencyInjection/LiveComponentExtension.php

@@ -93,7 +93,6 @@ public function load(array $configs, ContainerBuilder $container): void
             function (ChildDefinition $definition, AsLiveComponent $attribute) {
                 $definition
                     ->addTag('twig.component', array_filter($attribute->serviceConfig(), static fn ($v) => null !== $v && '' !== $v))
-                    ->addTag('controller.service_arguments')
                 ;
             }
         );

src/LiveComponent/src/LiveComponentBundle.php

@@ -14,6 +14,7 @@
 use Symfony\Component\DependencyInjection\Compiler\PassConfig;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
+use Symfony\UX\LiveComponent\DependencyInjection\Compiler\AddControllerTagToLiveComponentPass;
 use Symfony\UX\LiveComponent\DependencyInjection\Compiler\ComponentDefaultActionPass;
 use Symfony\UX\LiveComponent\DependencyInjection\Compiler\OptionalDependencyPass;
 
@@ -28,6 +29,7 @@ public function build(ContainerBuilder $container): void
     {
         // must run before Symfony\Component\Serializer\DependencyInjection\SerializerPass
         $container->addCompilerPass(new OptionalDependencyPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, 100);
+        $container->addCompilerPass(new AddControllerTagToLiveComponentPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, 1);
         $container->addCompilerPass(new ComponentDefaultActionPass());
     }
 

src/LiveComponent/src/Util/LiveControllerAttributesCreator.php

@@ -57,7 +57,11 @@ public function attributesForRendering(MountedComponent $mounted, ComponentMetad
         $attributesCollection = $this->attributeHelper->create();
         $attributesCollection->setLiveController($mounted->getName());
 
-        $url = $this->urlGenerator->generate($metadata->get('route'), ['_live_component' => $mounted->getName()], $metadata->get('url_reference_type'));
+        $url = $this->urlGenerator->generate(
+            $metadata->get('route') ?? 'ux_live_component',
+            ['_live_component' => $mounted->getName()],
+            $metadata->get('url_reference_type') ?? UrlGeneratorInterface::ABSOLUTE_PATH
+        );
         $attributesCollection->setUrl($url);
 
         $liveListeners = AsLiveComponent::liveListeners($mounted->getComponent());