Page "Update attendance" (attendances.php) considers two types of sessions

attendances.php

@@ -13,6 +13,7 @@
 
     $id 		= required_param('id', PARAM_INT);
 	$sessionid	= required_param('sessionid', PARAM_INT);
+    $grouptype  = required_param('grouptype', PARAM_INT);
     $group    	= optional_param('group', -1, PARAM_INT);              // Group to show
 	$sort 		= optional_param('sort','lastname', PARAM_ALPHA);
 
@@ -102,17 +103,22 @@
     $groupmode = groups_get_activity_groupmode($cm);
     $currentgroup = groups_get_activity_group($cm, true);
 
+    if ($grouptype === 0) {
         if ($currentgroup) {
             $students = get_users_by_capability($context, 'moodle/legacy:student', '', "u.$sort ASC", '', '', $currentgroup, '', false);
         } else {
             $students = get_users_by_capability($context, 'moodle/legacy:student', '', "u.$sort ASC", '', '', '', '', false);
         }
+    } else {
+        $students = get_users_by_capability($context, 'moodle/legacy:student', '', "u.$sort ASC", '', '', $grouptype, '', false);
+    }
 
 	$sort = $sort == 'firstname' ? 'firstname' : 'lastname';
     /// Now we need a menu for separategroups as well!
-    if ($groupmode == VISIBLEGROUPS || 
+    if ($grouptype === 0 &&
-            ($groupmode && has_capability('moodle/site:accessallgroups', $context))) {
+            ($groupmode == VISIBLEGROUPS ||
-        groups_print_activity_menu($cm, "attendances.php?id=$id&sessionid=$sessionid&sort=$sort");
+            ($groupmode && has_capability('moodle/site:accessallgroups', $context)))) {
+        groups_print_activity_menu($cm, "attendances.php?id=$id&sessionid=$sessionid&grouptype=$grouptype&sort=$sort");
     }
 	
 	$table->data[][] = '<b>'.get_string('sessiondate','attforblock').': '.userdate($sessdata->sessdate, get_string('strftimedate').', '.get_string('strftimehm', 'attforblock')).

lib.php

@@ -4,9 +4,6 @@
 
 $attforblock_CONSTANT = 7;     /// for example
 
-define('COMMONSESSION', 0);
-define('GROUPSESSION', 1);
-
 function attforblock_install() {
 	
 	$result = true;

locallib.php

@@ -5,6 +5,9 @@ require_once($CFG->libdir.'/gradelib.php');
 define('ONE_DAY', 86400);   // Seconds in one day
 define('ONE_WEEK', 604800);   // Seconds in one week
 
+define('COMMONSESSION', 0);
+define('GROUPSESSION', 1);
+
 function show_tabs($cm, $context, $currenttab='sessions')
 {
 	$toprow = array();

manage.php

@@ -102,7 +102,7 @@ function print_sessions_list($course) {
 					if($sessdata->lasttaken > 0)	//attendance has taken
 					{
 						if ($allowchange) {
-                            $desc = "<a href=\"attendances.php?id=$cm->id&amp;sessionid={$sessdata->id}\">".
+                            $desc = "<a href=\"attendances.php?id=$cm->id&amp;sessionid={$sessdata->id}&amp;grouptype={$sessdata->groupid}\">".
                                     ($sessdata->description ? $sessdata->description : get_string('nodescription', 'attforblock')).
                                     '</a>';
                         } else {
@@ -112,7 +112,7 @@ function print_sessions_list($course) {
 						$desc = empty($sessdata->description) ? get_string('nodescription', 'attforblock') : $sessdata->description;
 						if ($allowtake) {
                             $title = get_string('takeattendance','attforblock');
-                            $actions = "<a title=\"$title\" href=\"attendances.php?id=$cm->id&amp;sessionid={$sessdata->id}\">".
+                            $actions = "<a title=\"$title\" href=\"attendances.php?id=$cm->id&amp;sessionid={$sessdata->id}&amp;grouptype={$sessdata->groupid}\">".
                                        "<img src=\"{$CFG->pixpath}/t/go.gif\" alt=\"$title\" /></a>&nbsp;";
                         }
 					}