fix exeception and use PropertyAccessor to read the value

src/LiveComponent/phpunit.xml.dist.bak

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- https://phpunit.de/manual/current/en/appendixes.configuration.html -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/bin/.phpunit/phpunit.xsd"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+        <server name="KERNEL_CLASS" value="Symfony\UX\LiveComponent\Tests\Fixtures\Kernel" />
+        <server name="DATABASE_URL" value="sqlite:///%kernel.project_dir%/var/data.db" />
+        <env name="SHELL_VERBOSITY" value="-1"/>
+        <server name="SYMFONY_DEPRECATIONS_HELPER" value="max[self]=0&amp;max[direct]=0"/>
+    </php>
+
+    <testsuites>
+        <testsuite name="symfony/ux-live-component Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./src</directory>
+        </whitelist>
+    </filter>
+
+    <listeners>
+        <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener"/>
+    </listeners>
+</phpunit>

src/LiveComponent/src/LiveComponentHydrator.php

@@ -16,6 +16,8 @@
 use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
 use Symfony\Component\PropertyAccess\Exception\UninitializedPropertyException;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
+use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
+use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
 use Symfony\Component\PropertyInfo\Type;
 use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
@@ -358,14 +360,14 @@ private function dehydrateValue(mixed $value, LivePropMetadata $propMetadata, ob
             if (!$this->isValueValidDehydratedValue($value)) {
                 $badKeys = $this->getNonScalarKeys($value, $propMetadata->getName());
                 $badKeysText = implode(', ', array_map(fn ($key) => sprintf('%s: %s', $key, $badKeys[$key]), array_keys($badKeys)));
-                throw new \LogicException(sprintf('The LiveProp "%s" on component "%s" is an array, but it contains one or more keys that are not scalars: %s', $propMetadata->getName(), $parentObject::class, $badKeysText));
+                throw new \LogicException(throw new \LogicException(sprintf('Unable to dehydrate value of type "%s" for property "%s" on component "%s". Change this to a simpler type of an object that can be dehydrated. Or set the hydrateWith/dehydrateWith options in LiveProp or set "useSerializerForHydration: true" on the LiveProp to use the serializer.', get_debug_type($value), $propMetadata->getName(), $parentObject::class)));
             }
 
             return $value;
         }
 
         if (!\is_object($value)) {
-            throw new \LogicException(sprintf('The "%s" object has a hydrateMethod of "%s" but the method does not exist.', $parentObject::class, $propMetadata->hydrateMethod()));
+            throw new \LogicException(sprintf('Unable to dehydrate value of type "%s" for property "%s" on component "%s". Change this to a simpler type of an object that can be dehydrated. Or set the hydrateWith/dehydrateWith options in LiveProp or set "useSerializerForHydration: true" on the LiveProp to use the serializer.', get_debug_type($value), $propMetadata->getName(), $parentObject::class));
         }
 
         if (!$propMetadata->getType() || $propMetadata->isBuiltIn()) {
@@ -395,10 +397,10 @@ private function dehydrateObjectValue(object $value, string $classType, ?string
         }
 
         $dehydratedObjectValues = [];
-        foreach ((new \ReflectionClass($classType))->getProperties() as $property) {
-            $propertyValue = $this->propertyAccessor->getValue($value, $property->getName());
-            $propMetadata = $this->liveComponentMetadataFactory->createLivePropMetadata($classType, $property->getName(), $property, new LiveProp());
-            $dehydratedObjectValues[$property->getName()] = $this->dehydrateValue($propertyValue, $propMetadata, $parentObject);
+        foreach ((new PropertyInfoExtractor([new ReflectionExtractor()]))->getProperties($classType) as $property) {
+            $propertyValue = $this->propertyAccessor->getValue($value, $property);
+            $propMetadata = $this->liveComponentMetadataFactory->createLivePropMetadata($classType, $property, new \ReflectionProperty($classType, $property), new LiveProp());
+            $dehydratedObjectValues[$property] = $this->dehydrateValue($propertyValue, $propMetadata, $parentObject);
         }
 
         return $dehydratedObjectValues;
@@ -479,8 +481,8 @@ private function hydrateObjectValue(mixed $value, string $className, bool $allow
         if (\is_array($value)) {
             $object = new $className();
             foreach ($value as $propertyName => $propertyValue) {
-                $reflexionClass = new \ReflectionClass($className);
-                $property = $reflexionClass->getProperty($propertyName);
+                $reflectionClass = new \ReflectionClass($className);
+                $property = $reflectionClass->getProperty($propertyName);
                 $propMetadata = $this->liveComponentMetadataFactory->createLivePropMetadata($className, $propertyName, $property, new LiveProp());
                 $this->propertyAccessor->setValue($object, $propertyName, $this->hydrateValue($propertyValue, $propMetadata, $component));
             }

src/LiveComponent/src/Twig/TemplateCacheWarmer.php

@@ -26,14 +26,16 @@ public function __construct(private \IteratorAggregate $templateIterator, privat
     {
     }
 
-    public function warmUp(string $cacheDir): void
+    public function warmUp(string $cacheDir): array
     {
         $map = [];
         foreach ($this->templateIterator as $item) {
             $map[bin2hex(random_bytes(16))] = $item;
         }
 
         (new PhpArrayAdapter($cacheDir.'/'.$this->cacheFilename, new NullAdapter()))->warmUp(['map' => $map]);
+
+        return $map;
     }
 
     public function isOptional(): bool