MDL-63798 mod_assign: fix restore when group is missing

moodle · Nov 21, 2018 · b5f63b1 · b5f63b1
1 parent 0225ad4
commit b5f63b1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/mod/assign/backup/moodle2/restore_assign_stepslib.php b/mod/assign/backup/moodle2/restore_assign_stepslib.php
@@ -167,6 +167,11 @@ protected function process_assign_submission($data) {
         }
         if (!empty($data->groupid)) {
             $data->groupid = $this->get_mappingid('group', $data->groupid);
+            if (!$data->groupid) {
+                // If the group does not exist, then the submission cannot be viewed and restoring can
+                // violate the unique index on the submission table.
+                return;
+            }
         } else {
             $data->groupid = 0;
         }