[TwigComponent][LiveComponent] Seek only for live components in stack

Author: sneakyvv

src/LiveComponent/src/EventListener/DataModelPropsSubscriber.php

@@ -13,9 +13,11 @@
 
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
+use Symfony\UX\LiveComponent\Attribute\AsLiveComponent;
 use Symfony\UX\LiveComponent\Util\ModelBindingParser;
 use Symfony\UX\TwigComponent\ComponentStack;
 use Symfony\UX\TwigComponent\Event\PreMountEvent;
+use Symfony\UX\TwigComponent\MountedComponent;
 
 /**
  * Parses the "data-model" key, which triggers extra props to be passed in.
@@ -54,8 +56,9 @@ public function onPreMount(PreMountEvent $event): void
         unset($data['dataModel']);
         $data['data-model'] = $dataModel;
 
-        // the parent is still listed as the "current" component at this point
-        $parentMountedComponent = $this->componentStack->getCurrentComponent();
+        // find the first parent of the component about to be rendered that is a Live Component
+        // only those can have properties controlled via the data-model attribute
+        $parentMountedComponent = $this->getCurrentLiveComponent($this->componentStack);
         if (null === $parentMountedComponent) {
             throw new \LogicException('You can only pass "data-model" when rendering a component when you\'re rendering inside of a parent component.');
         }
@@ -76,4 +79,20 @@ public static function getSubscribedEvents(): array
             PreMountEvent::class => 'onPreMount',
         ];
     }
+
+    private function getCurrentLiveComponent(ComponentStack $componentStack): ?MountedComponent
+    {
+        foreach ($componentStack as $mountedComponent) {
+            if ($this->isLiveComponent($mountedComponent->getComponent()::class)) {
+                return $mountedComponent;
+            }
+        }
+
+        return null;
+    }
+
+    private function isLiveComponent(string $classname): bool
+    {
+        return [] !== (new \ReflectionClass($classname))->getAttributes(AsLiveComponent::class);
+    }
 }

src/TwigComponent/src/ComponentStack.php

@@ -16,7 +16,7 @@
  *
  * @internal
  */
-class ComponentStack
+class ComponentStack implements \IteratorAggregate
 {
     /**
      * @var MountedComponent[]
@@ -60,4 +60,12 @@ public function hasParentComponent(): bool
     {
         return (bool) $this->getParentComponent();
     }
+
+    /**
+     * @return MountedComponent[]|\ArrayIterator
+     */
+    public function getIterator(): \Traversable
+    {
+        return new \ArrayIterator(array_reverse($this->components));
+    }
 }