Merge pull request pkp#4389 from kaitlinnewson/8564-3_4_0

pkp/pkp-lib#8564 order export by issue ordering in pubmed plugin

plugins/importexport/pubmed/PubMedExportPlugin.php

@@ -3,8 +3,8 @@
 /**
  * @file plugins/importexport/pubmed/PubMedExportPlugin.php
  *
- * Copyright (c) 2014-2022 Simon Fraser University
- * Copyright (c) 2003-2022 John Willinsky
+ * Copyright (c) 2014-2024 Simon Fraser University
+ * Copyright (c) 2003-2024 John Willinsky
  * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
  *
  * @class PubMedExportPlugin
@@ -187,14 +187,17 @@ public function exportIssues($issueIds, $context, $user)
         $pubmedExportFilters = $filterDao->getObjectsByGroup('article=>pubmed-xml');
         assert(count($pubmedExportFilters) == 1); // Assert only a single serialization filter
         $exportFilter = array_shift($pubmedExportFilters);
-        $submissions = Repo::submission()
-            ->getCollector()
-            ->filterByContextIds([$context->getId()])
-            ->filterByIssueIds($issueIds)
-            ->getMany();
+        $input = [];
+
+        foreach ($issueIds as $issueId) {
+            $sections = Repo::section()->getByIssueId($issueId);
+            $submissionsInSections = Repo::submission()->getInSections($issueId, $context->getId());
+            foreach ($sections as $section) {
+                $input = array_merge($input, $submissionsInSections[$section->getId()]['articles']);
+            }
+        }
 
         libxml_use_internal_errors(true);
-        $input = $submissions->toArray();
         $submissionXml = $exportFilter->execute($input, true);
         $xml = $submissionXml->saveXml();
         $errors = array_filter(libxml_get_errors(), function ($a) {