Issue #3402831: [sorting] Always set the multivalue's first value as …

…long as it's not NULL
mkalkbrenner · Nov 20, 2023 · a8e6a1d · a8e6a1d
1 parent d0e01a4
commit a8e6a1d
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/Plugin/search_api/backend/SearchApiSolrBackend.php b/src/Plugin/search_api/backend/SearchApiSolrBackend.php
@@ -1381,7 +1381,7 @@ public function getDocuments(IndexInterface $index, array $items, UpdateQuery $u
         }
 
         // Enable sorts in some special cases.
-        if ($first_value && !array_key_exists($name, $special_fields)) {
+        if (($first_value !== NULL) && !array_key_exists($name, $special_fields)) {
           if (
             strpos($field_names[$name], 't') === 0 ||
             strpos($field_names[$name], 's') === 0
@@ -2647,11 +2647,11 @@ protected function addIndexField(Document $doc, $key, array $values, $type, arra
     if (empty($values)) {
       if ('text' !== $type || !$this->configuration['index_empty_text_fields']) {
         // Don't index empty values (i.e., when field is missing).
-        return '';
+        return NULL;
       }
     }
 
-    $first_value = '';
+    $first_value = NULL;
 
     // All fields.
     foreach ($values as $value) {