Fixed processing null values in fulltext function when field does not exists

Author: lebeda

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [2.0.4]
+
+- Fixed processing of fulltext function when value of selected field is `null` 
+
 ## [2.0.3]
 
 - Fixed tokenization when using zero compare value

src/Functions/String/Fulltext.php

@@ -40,7 +40,7 @@ public function __invoke(array $item, array $resultItem): float|int
         $terms = $this->splitQuery($this->query);
         foreach ($this->fields as $index => $field) {
             $field = trim($field);
-            $fieldValue = $this->getFieldValue($field, $item, $resultItem);
+            $fieldValue = $this->getFieldValue($field, $item, $resultItem) ?? '';
             $weight = 1 / ($index + 1); // Weight by field order (lower index = higher weight).
             $score += $this->mode->calculate($this->extractPlainText($fieldValue), $terms) * $weight;
         }