Fixed issue when there are no teachers

2015-12-14 11:10:50 +08:00 · 2015-12-14 11:10:50 +08:00 · 344710b51d
parent 2416e8a3e0
commit 344710b51d
1 changed files with 3 additions and 1 deletions
--- a/element/teachername/classes/element.php
+++ b/element/teachername/classes/element.php
@ -48,7 +48,9 @@ class element extends \mod_customcert\element {
     * @return string the text
     */
    public function save_unique_data($data) {
-        return $data->teacher;
+        if (!empty($data->teacher)) {
+            return $data->teacher;
+        }
    }

    /**