Symfony: Add support for AsTwigComponent(template: new FromMethod(...)) (#341)

Author: janedbal

src/Provider/SymfonyUsageProvider.php

@@ -36,6 +36,7 @@
 use ShipMonk\PHPStan\DeadCode\Graph\UsageOrigin;
 use SimpleXMLElement;
 use SplFileInfo;
+use Symfony\UX\TwigComponent\Attribute\FromMethod;
 use UnexpectedValueException;
 use function array_filter;
 use function array_key_first;
@@ -417,6 +418,21 @@ private function getMethodUsagesFromReflection(InClassNode $node): array
             }
         }
 
+        foreach (['Symfony\UX\TwigComponent\Attribute\AsTwigComponent', 'Symfony\UX\LiveComponent\Attribute\AsLiveComponent'] as $twigComponentAttributeClass) {
+            foreach ($nativeReflection->getAttributes($twigComponentAttributeClass) as $twigComponentAttribute) {
+                $twigComponentArguments = $twigComponentAttribute->getArguments();
+                $template = $twigComponentArguments['template'] ?? $twigComponentArguments[1] ?? null;
+
+                if ($template instanceof FromMethod) {
+                    $templateMethodName = $template->method;
+
+                    if ($classReflection->hasNativeMethod($templateMethodName)) {
+                        $usages[] = $this->createUsage($classReflection->getNativeMethod($templateMethodName), 'Twig component template method via FromMethod');
+                    }
+                }
+            }
+        }
+
         return $usages;
     }
 

tests/Rule/data/providers/symfony-ux.php

@@ -107,3 +107,18 @@ public function getFieldName(): string { return 'field'; }
 
     public function deadMethod(): void {} // error: Unused SymfonyUx\CustomActionComponent::deadMethod
 }
+
+#[AsTwigComponent(template: new \Symfony\UX\TwigComponent\Attribute\FromMethod('getTemplatePath'))]
+class DynamicTemplateComponent
+{
+    public function __construct() {}
+
+    public function mount(): void {}
+
+    public function getTemplatePath(): string
+    {
+        return 'components/dynamic.html.twig';
+    }
+
+    public function deadMethod(): void {} // error: Unused SymfonyUx\DynamicTemplateComponent::deadMethod
+}