From 1f807bc46a2406f2c31fb3905d3e3a65bc81f2e0 Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Sat, 15 Mar 2008 21:57:25 +0000
Subject: [PATCH] Prevent duplicate users in list when user has both visible
 and hidden roles. MDL-13935 ; merged from 19_STABLE

---
 user/index.php | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/user/index.php b/user/index.php
index 7a9aeca35d..3eace2f610 100644
--- a/user/index.php
+++ b/user/index.php
@@ -448,10 +448,12 @@
         $where .= ' AND '.$table->get_sql_where();
     }
 
+    /// Always add r.hidden to sort in order to guarantee hiddens to "win"
+    /// in the resolution of duplicates later - MDL-13935
     if ($table->get_sql_sort()) {
-        $sort = ' ORDER BY '.$table->get_sql_sort();
+        $sort = ' ORDER BY '.$table->get_sql_sort() . ', r.hidden DESC';
     } else {
-        $sort = '';
+        $sort = ' r.hidden DESC';
     }
 
     $matchcount = count_records_sql('SELECT COUNT(distinct u.id) '.$from.$where.$wheresearch);
@@ -630,7 +632,13 @@
             }
 
             if ($matchcount > 0) {
+                $usersprinted = array();
                 while ($user = rs_fetch_next_record($userlist)) {
+                    if (in_array($user->id, $usersprinted)) { /// Prevent duplicates by r.hidden - MDL-13935
+                        continue;
+                    }
+                    $usersprinted[] = $user->id; /// Add new user to the array of users printed
+
                     $user = make_context_subobj($user);
                     print_user($user, $course, $bulkoperations);
                 }
@@ -654,8 +662,14 @@
             } else {
                 $showenrolplugin = false;
             }
-            
+
+            $usersprinted = array();
             while ($user = rs_fetch_next_record($userlist)) {
+                if (in_array($user->id, $usersprinted)) { /// Prevent duplicates by r.hidden - MDL-13935
+                    continue;
+                }
+                $usersprinted[] = $user->id; /// Add new user to the array of users printed
+
                 $user = make_context_subobj($user);
                 if ( !empty($user->hidden) ) {
                 // if the assignment is hidden, display icon
-- 
2.39.5