fix for BIESt 1127, closes #1127

Closes #1127

Merge request studip/studip!677

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/models/DatafieldEntryModel.class.php b/lib/models/DatafieldEntryModel.class.php
index 2ea16f6..6bc851d 100644
--- a/lib/models/DatafieldEntryModel.class.php
+++ b/lib/models/DatafieldEntryModel.class.php
@@ -78,7 +78,10 @@ class DatafieldEntryModel extends SimpleORMap implements PrivacyObject
             $range_id = $model->user_id;
             $sec_range_id = $model->institut_id;
         } elseif (is_a($model, 'ModulDeskriptor')) {
-            $params[':institution_ids'] = [$model->modul->responsible_institute->institut_id];
+            $params[':institution_ids'] = '';
+            if (!empty($model->modul->responsible_institute->institut_id)) {
+                $params[':institution_ids'] = [$model->modul->responsible_institute->institut_id];
+            }
             $object_class = $model->getVariant();
             $object_type = 'moduldeskriptor';
             $range_id = $model->deskriptor_id;