fix: generate correct referring urls

public/typo3conf/ext/ep_products/Classes/Controller/SearchController.php

@@ -137,6 +137,7 @@ class SearchController extends ActionController
             ->uriBuilder
             ->reset()
             ->setTargetPageUid($this->settings['defaultSearchPageUid'])
+            ->setCreateAbsoluteUri(true)
             ->uriFor(
                 'searchresult',
                 ['filterSettings' => $filterSettings],

public/typo3conf/ext/ep_theme/Classes/ViewHelpers/Uri/ProductViewHelper.php

@@ -44,6 +44,7 @@ class ProductViewHelper extends AbstractViewHelper
         $this->registerArgument('forceHotelUid', 'bool', 'Whether to force link a hotel');
         $this->registerArgument('dateFrom', 'string', 'Date to limit table on detail page by (Y-m-d)');
         $this->registerArgument('dateTo', 'string', 'Date to limit table on detail page by (Y-m-d)');
+        $this->registerArgument('ref', 'string', 'Referring URL');
     }
 
     /**
@@ -81,13 +82,21 @@ class ProductViewHelper extends AbstractViewHelper
 
         $targetPageUid = is_array($product) ? (int)$product['detailPage'] : $product->getDetailPage();
 
-        return $renderingContext
+        $uri = $renderingContext
             ->getControllerContext()
             ->getUriBuilder()
             ->reset()
             ->setTargetPageUid($targetPageUid)
             ->uriFor('detail', $linkArguments, 'Product', 'epproducts', 'product_detail')
         ;
+
+        if ($arguments['ref']) {
+            $referringPageUri = urlencode($arguments['ref']);
+            $separator = false !== strpos($uri, '?') ? '&' : '?';
+            $uri .= $separator . 'ref=' . $referringPageUri;
+        }
+
+        return $uri;
     }
 
 }

public/typo3conf/ext/ep_theme/Resources/Private/Partials/Product/Teaser.html

@@ -13,7 +13,7 @@
 
     <f:section name="TeaserImage">
         <div class="relative{f:if(condition: landscape, then: ' sm:w-2/5')}">
-            <a href="{ep:uri.product(forceHotelUid: forceHotelUid, product: product, hotel: hotel, dateFrom: dateFrom, dateTo: dateTo)}{f:if(condition: referringPageUri, then: '?ref={referringPageUri -> f:format.urlencode()}')}"
+            <a href="{ep:uri.product(forceHotelUid: forceHotelUid, product: product, hotel: hotel, dateFrom: dateFrom, dateTo: dateTo, ref: referringPageUri)}"
                title="{region.name} {product.name} Details und Buchen">
                 <f:if condition="{productImage}">
                     <f:then>