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[banana.git] / admin / summary.php

diff --git a/admin/summary.php b/admin/summary.php
index 0cd54671f019ea7e3d981ac5d638990a9ba230d2..b4671576f45a7c1e8de89fbe08e368539ab8e85f 100644 (file)
--- a/admin/summary.php
+++ b/admin/summary.php
@@ -4,16 +4,23 @@
   require 'include/session.inc';
   require 'include/common.inc';
 
+  if ($db->query("SELECT COUNT(*) FROM students")->fetch(PDO::FETCH_NUM)[0] == 0) {
+    block("red", "no students registered");
+    exit;
+  }
+
   block("black", "summary of everything for " . date("d.m.Y H:i"));
 
-  $result = $db->query("SELECT firstname, lastname, mnumber, blackboard FROM students ORDER BY lastname");
+  $result = $db->query("SELECT firstname, lastname, mnumber, blackboard FROM students ORDER BY LOWER(lastname)");
 
   print "<table>";
   print "<td><b>First name&nbsp;</b></td><td><b>Last name&nbsp;</b></td><td><b>Matr.nummer&nbsp;</b></td><td><b>Examples&nbsp;</b></td><td><b>Blackboard&nbsp;</b></td>";
   while ($student = $result->fetch(PDO::FETCH_ASSOC)) {
-    $exdone = $db->query("SELECT manydone FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM);
     $totexdone = 0;
-    foreach($exdone as $subdone) { $totexdone += $subdone; }
+    if( $db->query("SELECT COUNT(*) FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM)[0] > 0 ) {
+      $exdone = $db->query("SELECT manydone FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM);
+      foreach($exdone as $subdone) { $totexdone += $subdone; }
+    }
     print "<tr>";
     print "<td>" . $student['firstname'] . "</td>";
     print "<td>" . $student['lastname'] . "</td>";