Enable preview for shadow entities

.php-cs-fixer.dist.php

@@ -33,6 +33,7 @@
         'strict_param' => true,
         'get_class_to_class_keyword' => false, // should be enabled as soon as support for php < 8 is dropped
         'nullable_type_declaration_for_default_null_value' => true,
+        'no_null_property_initialization' => false,
     ])
     ->setFinder(
         PhpCsFixer\Finder::create()

Content/Infrastructure/Sulu/Admin/ContentViewBuilderFactory.php

@@ -240,12 +240,6 @@ public function createViews(
                 $settingsToolbarActions,
                 $dimensionContentClass
             );
-
-            foreach ($views as $view) {
-                if ($view instanceof PreviewFormViewBuilderInterface) {
-                    $view->setPreviewCondition('shadowOn != true');
-                }
-            }
         }
 
         return $views;

Content/Infrastructure/Sulu/Preview/ContentObjectProvider.php

@@ -20,6 +20,7 @@
 use Sulu\Bundle\ContentBundle\Content\Domain\Exception\ContentNotFoundException;
 use Sulu\Bundle\ContentBundle\Content\Domain\Model\ContentRichEntityInterface;
 use Sulu\Bundle\ContentBundle\Content\Domain\Model\DimensionContentInterface;
+use Sulu\Bundle\ContentBundle\Content\Domain\Model\ShadowInterface;
 use Sulu\Bundle\ContentBundle\Content\Domain\Model\TemplateInterface;
 use Sulu\Bundle\PreviewBundle\Preview\Object\PreviewObjectProviderInterface;
 
@@ -193,6 +194,11 @@ protected function resolveContent(ContentRichEntityInterface $contentRichEntity,
                 ]
             );
 
+            // unfortunately we can only check if it is a shadow after the dimensionContent was loaded
+            if ($resolvedDimensionContent instanceof ShadowInterface && $resolvedDimensionContent->getShadowLocale()) {
+                return $this->resolveContent($contentRichEntity, $resolvedDimensionContent->getShadowLocale());
+            }
+
             if (!$resolvedDimensionContent->getLocale()) {
                 // avoid 500 error when ghostLocale is loaded by still use correct locale in serialize method
                 $resolvedDimensionContent->setLocale($locale);

Tests/Unit/Content/Infrastructure/Sulu/Preview/ContentObjectProviderTest.php

@@ -26,6 +26,7 @@
 use Sulu\Bundle\ContentBundle\Content\Domain\Exception\ContentNotFoundException;
 use Sulu\Bundle\ContentBundle\Content\Domain\Model\ContentRichEntityInterface;
 use Sulu\Bundle\ContentBundle\Content\Domain\Model\DimensionContentInterface;
+use Sulu\Bundle\ContentBundle\Content\Domain\Model\ShadowInterface;
 use Sulu\Bundle\ContentBundle\Content\Infrastructure\Sulu\Preview\ContentObjectProvider;
 use Sulu\Bundle\ContentBundle\Content\Infrastructure\Sulu\Preview\PreviewDimensionContentCollection;
 use Sulu\Bundle\ContentBundle\Tests\Application\ExampleTestBundle\Admin\ExampleAdmin;
@@ -115,6 +116,63 @@ public function testGetObject(int $id = 1, string $locale = 'de'): void
         $this->assertSame($dimensionContent->reveal(), $result);
     }
 
+    public function testGetObjectWithShadow(int $id = 1, string $locale = 'de'): void
+    {
+        $queryBuilder = $this->prophesize(QueryBuilder::class);
+
+        $this->entityManager->createQueryBuilder()->willReturn($queryBuilder->reveal())->shouldBeCalledTimes(1);
+
+        $queryBuilder->select(Argument::type('string'))
+            ->willReturn($queryBuilder->reveal())
+            ->shouldBeCalledTimes(1);
+
+        $queryBuilder->from(Argument::type('string'), Argument::type('string'))
+            ->willReturn($queryBuilder->reveal())
+            ->shouldBeCalledTimes(1);
+
+        $queryBuilder->where(Argument::type('string'))
+            ->willReturn($queryBuilder->reveal())
+            ->shouldBeCalledTimes(1);
+
+        $queryBuilder->setParameter(Argument::type('string'), Argument::any())
+            ->willReturn($queryBuilder->reveal())
+            ->shouldBeCalledTimes(1);
+
+        $query = $this->prophesize(AbstractQuery::class);
+
+        $queryBuilder->getQuery()->willReturn($query->reveal())->shouldBeCalledTimes(1);
+
+        $entity = $this->prophesize(ContentRichEntityInterface::class);
+
+        $query->getSingleResult()->willReturn($entity->reveal())->shouldBeCalledTimes(1);
+
+        $dimensionContent = $this->prophesize(DimensionContentInterface::class);
+        $dimensionContent->willImplement(ShadowInterface::class);
+        $dimensionContent->getShadowLocale()->willReturn('en')->shouldBeCalledTimes(2);
+
+        $this->contentResolver->resolve(
+            $entity->reveal(),
+            [
+                'locale' => 'de',
+                'stage' => DimensionContentInterface::STAGE_DRAFT,
+            ]
+        )->willReturn($dimensionContent->reveal())->shouldBeCalledTimes(1);
+
+        $dimensionContent = $this->prophesize(DimensionContentInterface::class);
+        $dimensionContent->getLocale()->willReturn('en');
+        $this->contentResolver->resolve(
+            $entity->reveal(),
+            [
+                'locale' => 'en',
+                'stage' => DimensionContentInterface::STAGE_DRAFT,
+            ]
+        )->willReturn($dimensionContent->reveal())->shouldBeCalledTimes(1);
+
+        $result = $this->contentObjectProvider->getObject((string) $id, $locale);
+
+        $this->assertSame($dimensionContent->reveal(), $result);
+    }
+
     public function testGetNonExistingObject(int $id = 1, string $locale = 'de'): void
     {
         $this->entityManager->createQueryBuilder()->willThrow(NoResultException::class)->shouldBeCalledTimes(1);