Refines handling of 'relation' column for nested arrays

Updates logic to process 'relation' columns with nested arrays by
introducing single-object mapping based on key fields. Improves
data handling consistency and ensures accurate reference and
display values for relation objects.

Author: Vitexus

src/AbraFlexi/RO.php

@@ -1084,14 +1084,16 @@ public function fixRecordTypes(array $record, $evidence = null)
                             break;
                         case 'relation':
                             if (\is_array($record[$column])) {
-                                foreach ($record[$column] as $pos => $value) {
-                                    $record[$column][$pos] = new Relation(
-                                        \is_array($value) ? $value['id'] : $value,
-                                        \array_key_exists('fkEvidencePath', $columnInfo) && null !== $columnInfo['fkEvidencePath'] ? $columnInfo['fkEvidencePath'] : $column,
-                                        \array_key_exists($column.'@ref', $record) ? $record[$column.'@ref'] : null,
-                                        \array_key_exists($column.'@showAs', $record) ? $record[$column.'@showAs'] : null,
-                                    );
-                                }
+                                $value = $record[$column][0];
+
+                                $valueFields = array_keys($value);
+                                $subject = next($valueFields);
+                                $record[$column] = new Relation(
+                                    \is_array($value) ? ($value['kod'] ?: $value['id']) : $value,
+                                    \array_key_exists('fkEvidencePath', $columnInfo) && null !== $columnInfo['fkEvidencePath'] ? $columnInfo['fkEvidencePath'] : $column,
+                                    \array_key_exists($subject.'@ref', $value) ? $record[$subject.'@ref'] : $value['id'],
+                                    \array_key_exists($subject.'@showAs', $value) ? $value[$subject.'@showAs'] : null,
+                                );
                             } else {
                                 $record[$column] = new Relation(
                                     \is_array($value) ? $value[0] : $value,