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[banana.git] / admin / blackboard.php

diff --git a/admin/blackboard.php b/admin/blackboard.php
index b683221cf84298dcb8426dcc9030c49157004f24..4066f84d4249fb5cdd61cca6e4a341d556d8e62a 100644 (file)
--- a/admin/blackboard.php
+++ b/admin/blackboard.php
@@ -8,6 +8,11 @@
     block("lightgreen", "added blackboard");
   }
 
+  if ($db->query("SELECT COUNT(*) FROM students")->fetch(PDO::FETCH_NUM)[0] == 0) {
+    block("red", "no students registered");
+    break;
+  }
+
   block("black", "add blackboard");
 ?>