BUGFIX: Set canonical to original node on non translated pages

Author: Sebobo

DistributionPackages/Neos.NeosIo/Classes/Eel/Helper/NodeHelper.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types=1);
+
+namespace Neos\NeosIo\Eel\Helper;
+
+use Neos\ContentRepository\Core\DimensionSpace\AbstractDimensionSpacePoint;
+use Neos\Eel\ProtectedContextAwareInterface;
+
+class NodeHelper implements ProtectedContextAwareInterface
+{
+
+    /** @return array<string,array<int,string>> */
+    public function dimensionSpacePointArray(AbstractDimensionSpacePoint $dimensionSpacePoint): array
+    {
+        return $dimensionSpacePoint->toLegacyDimensionArray();
+    }
+
+    /**
+     * @param string $methodName
+     */
+    public function allowsCallOfMethod($methodName): bool
+    {
+        return true;
+    }
+}

DistributionPackages/Neos.NeosIo/Configuration/Settings.Fusion.yaml

@@ -4,3 +4,4 @@ Neos:
       Data: Neos\NeosIo\Eel\Helper\DataHelper
       NeosIo_Event: Neos\NeosIo\Eel\Helper\EventHelper
       Gravatar: Neos\NeosIo\Eel\Helper\GravatarHelper
+      NeosIo.Node: Neos\NeosIo\Eel\Helper\NodeHelper

DistributionPackages/Neos.NeosIo/Resources/Private/Fusion/Overrides/Override.Seo.fusion

@@ -26,3 +26,16 @@ prototype(Neos.Seo:AlternateLanguageLink) {
     @if.hasMetaRobotsNoIndexNotSet = ${q(this.node).property('metaRobotsNoindex') || q(this.node).is('[instanceof Neos.Seo:NoindexMixin]') ? false : true}
     @if.hasNoForeignCanonical = ${String.isBlank(q(this.node).property('canonicalLink'))}
 }
+
+prototype(Neos.Seo:CanonicalLink) {
+    attributes.href.node = Neos.Fusion:Case {
+        useFallback {
+            condition = ${node.originDimensionSpacePoint != node.dimensionSpacePoint}
+            renderer = ${q(node).context({dimensions: NeosIo.Node.dimensionSpacePointArray(node.originDimensionSpacePoint)}).get(0)}
+        }
+        default {
+            condition = true
+            renderer = ${node}
+        }
+    }
+}