Merge pull request #239 from sh-csg/hide-move-if-only-one-instance

Hide move button if only one instance is present in the course

Author: TamaroWalter

locallib.php

@@ -226,7 +226,12 @@ function moodleoverflow_print_latest_discussions($moodleoverflow, $cm, $page = -
     // Check wether the user can move a topic.
     $canmovetopic = false;
     if ((!is_guest($context, $USER) && isloggedin()) && has_capability('mod/moodleoverflow:movetopic', $context)) {
-        $canmovetopic = true;
+        $modinfo = get_fast_modinfo($moodleoverflow->course);
+        $coursemoodleoverflows = $modinfo->get_instances_of('moodleoverflow');
+        $coursemoodleoverflows = array_filter($coursemoodleoverflows, function($cm) {
+            return $cm->deletioninprogress == 0;
+        });
+        $canmovetopic = count($coursemoodleoverflows) > 1;
     }
 
     // Iterate through every visible discussion.