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groups.php
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groups.php
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<?php // $Id$
/// Editing interface to edit all the groups in a course
require_once('../config.php');
require_once('lib.php');
$courseid = required_param('id'); // Course id
$selectedgroup = optional_param('group', NULL); // Current group id
if (! $course = get_record('course', 'id', $courseid) ) {
error("That's an invalid course id");
}
require_login($course->id);
if (!isteacheredit($course->id)) {
redirect("group.php?id=$course->id"); // Not allowed to see all groups
}
/// Get the current list of groups and check the selection is valid
$groups = get_groups($course->id);
if ($selectedgroup and !isset($groups[$selectedgroup])) {
$selectedgroup = NULL;
}
/// Print the header of the page
$strgroup = get_string('group');
$strgroups = get_string('groups');
$streditgroupprofile = get_string('editgroupprofile');
$strgroupmembers = get_string('groupmembers');
$strgroupmemberssee = get_string('groupmemberssee');
$strparticipants = get_string('participants');
print_header("$course->shortname: $strgroups", "$course->fullname",
"<a href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</a> ".
"-> <a href=\"$CFG->wwwroot/user/index.php?id=$course->id\">$strparticipants</a> ".
"-> $strgroups", "", "", true, '', user_login_string($course, $USER));
/// First, process any inputs there may be.
if ($data = data_submitted() and confirm_sesskey()) {
// Clean ALL incoming parameters which go in SQL queries here for good measure
$data->id = required_param('id', PARAM_INT);
$data->groups = optional_param('groups', 0, PARAM_INT);
$data->groupid = optional_param('groupid', 0, PARAM_INT);
$data->members = optional_param('members', array(), PARAM_INT);
if (!empty($data->nonmembersadd)) { /// Add people to a group
if (!empty($data->nonmembers) and !empty($data->groupid)) {
$groupmodified = false;
foreach ($data->nonmembers as $userid) {
if (!user_group($course->id, $userid)) { // Just to make sure (another teacher could be editing)
$record->groupid = $data->groupid;
$record->userid = $userid;
$record->timeadded = time();
if (!insert_record('groups_members', $record)) {
notify("Error occurred while adding user $userid to group $data->groupid");
}
$groupmodified = true;
}
}
if ($groupmodified) {
set_field('groups', 'timemodified', time(), 'id', $data->groupid);
}
}
$selectedgroup = $data->groupid;
} else if (!empty($data->nonmembersrandom)) { /// Add all non members to groups
notify("Random adding of people into groups is not functional yet.");
} else if (!empty($data->nonmembersinfo)) { /// Return info about the selected users
notify("You must turn Javascript on");
} else if (!empty($data->groupsremove)) { /// Remove a group, all members become nonmembers
if (!empty($data->groups)) {
if(!isset($groups[$data->groups])) {
error("This is not a valid group to remove");
}
delete_records("groups", "id", $data->groups);
delete_records("groups_members", "groupid", $data->groups);
unset($groups[$data->groups]);
}
} else if (!empty($data->groupsinfo)) { /// Display full info for a group
notify("You must turn Javascript on");
} else if (!empty($data->groupsadd)) { /// Create a new group
if (!empty($data->newgroupname)) {
$newgroup->name = $data->newgroupname;
$newgroup->courseid = $course->id;
$newgroup->lang = current_language();
$newgroup->timecreated = time();
if (!insert_record("groups", $newgroup)) {
notify("Could not insert the new group '$newgroup->name'");
}
$groups = get_groups($course->id);
}
} else if (!empty($data->membersremove)) { /// Remove selected people from a particular group
if (!empty($data->members) and !empty($data->groupid)) {
foreach ($data->members as $userid) {
delete_records('groups_members', 'userid', $userid, "groupid", $data->groupid);
}
set_field('groups', 'timemodified', time(), 'id', $data->groupid);
}
$selectedgroup = $data->groupid;
} else if (!empty($data->membersinfo)) { /// Return info about the selected users
notify("You must turn Javascript on");
}
}
/// Calculate data ready to create the editing interface
$strgroupnonmembers = get_string('groupnonmembers');
$strgroupmembersselected = get_string('groupmembersselected');
$strgroupremovemembers = get_string('groupremovemembers');
$strgroupinfomembers = get_string('groupinfomembers');
$strgroupadd = get_string('groupadd');
$strgroupremove = get_string('groupremove');
$strgroupinfo = get_string('groupinfo');
$strgroupinfoedit = get_string('groupinfoedit');
$strgroupinfopeople = get_string('groupinfopeople');
$strgrouprandomassign = get_string('grouprandomassign');
$strgroupaddusers = get_string('groupaddusers');
$courseid = $course->id;
$listgroups = array();
$listmembers = array();
$nonmembers = array();
$groupcount = count($groups);
/// First, get everyone into the nonmembers array
if ($students = get_course_students($course->id)) {
foreach ($students as $student) {
$nonmembers[$student->id] = fullname($student, true);
}
unset($students);
}
if ($teachers = get_course_teachers($course->id)) {
foreach ($teachers as $teacher) {
$prefix = '- ';
if (isteacheredit($course->id, $teacher->id)) {
$prefix = '# ';
}
$nonmembers[$teacher->id] = $prefix.fullname($teacher, true);
}
unset($teachers);
}
/// Pull out all the members into little arrays
if ($groups) {
foreach ($groups as $group) {
$countusers = 0;
$listmembers[$group->id] = array();
if ($groupusers = get_group_users($group->id)) {
foreach ($groupusers as $groupuser) {
$listmembers[$group->id][$groupuser->id] = $nonmembers[$groupuser->id];
unset($nonmembers[$groupuser->id]);
$countusers++;
}
natcasesort($listmembers[$group->id]);
}
$listgroups[$group->id] = $group->name." ($countusers)";
}
natcasesort($listgroups);
}
natcasesort($nonmembers);
if (empty($selectedgroup)) { // Choose the first group by default
if ($selectedgroup = array_shift($temparr = array_keys($listgroups))) {
$members = $listmembers[$selectedgroup];
}
} else {
$members = $listmembers[$selectedgroup];
}
$sesskey = !empty($USER->id) ? $USER->sesskey : '';
/// Print out the complete form
include('groups-edit.html');
print_footer($course);
?>