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<?php // $Id$
require_once("../../config.php");
require_once("lib.php");
require_variable($id); // forum
optional_variable($group); // change of group
optional_variable($edit); // Turn editing on and off
if (! $forum = get_record("forum", "id", $id)) {
error("Forum ID is incorrect");
}
if (! $course = get_record("course", "id", $forum->course)) {
error("Could not find this course!");
}
if (! $cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
$cm->id = 0;
}
require_login($course->id, false, $cm);
if (!isteacher($course->id)) {
error("This page is for teachers only");
}
unset($SESSION->fromdiscussion);
add_to_log($course->id, "forum", "view subscribers", "subscribers.php?id=$forum->id", $forum->id, $cm->id);
if (isset($_GET['edit'])) {
if($edit == "on") {
$USER->subscriptionsediting = true;
} else {
$USER->subscriptionsediting = false;
}
}
$strsubscribeall = get_string("subscribeall", "forum");
$strsubscribenone = get_string("subscribenone", "forum");
$strsubscribers = get_string("subscribers", "forum");
$strforums = get_string("forums", "forum");
$navigation = "<a href=\"index.php?id=$course->id\">$strforums</a> ->
<a href=\"view.php?f=$forum->id\">".format_string($forum->name,true)."</a> -> $strsubscribers";
print_header_simple("$strsubscribers", "", "$navigation",
"", "", true, forum_update_subscriptions_button($course->id, $id));
/// Check to see if groups are being used in this forum
if ($groupmode = groupmode($course, $cm)) { // Groups are being used
$currentgroup = setup_and_print_groups($course, $groupmode, "subscribers.php?id=$forum->id");
} else {
$currentgroup = false;
}
if (empty($USER->subscriptionsediting)) { /// Display an overview of subscribers
if (! $users = forum_subscribed_users($course, $forum, $currentgroup) ) {
print_heading(get_string("nosubscribers", "forum"));
} else {
print_heading(get_string("subscribersto","forum", "'".format_string($forum->name)."'"));
echo '<table align="center" cellpadding="5" cellspacing="5">';
foreach ($users as $user) {
echo '<tr><td>';
print_user_picture($user->id, $course->id, $user->picture);
echo '</td><td>';
echo fullname($user);
echo '</td><td>';
echo $user->email;
echo '</td></tr>';
}
echo "</table>";
}
print_footer($course);
exit;
}
/// We are in editing mode.
$strexistingsubscribers = get_string("existingsubscribers", 'forum');
$strpotentialsubscribers = get_string("potentialsubscribers", 'forum');
$straddsubscriber = get_string("addsubscriber", 'forum');
$strremovesubscriber = get_string("removesubscriber", 'forum');
$strsearch = get_string("search");
$strsearchresults = get_string("searchresults");
$strshowall = get_string("showall");
$strsubscribers = get_string("subscribers", "forum");
$strforums = get_string("forums", "forum");
if ($frm = data_submitted()) {
/// A form was submitted so process the input
if (!empty($frm->add) and !empty($frm->addselect)) {
foreach ($frm->addselect as $addsubscriber) {
if (! forum_subscribe($addsubscriber, $id)) {
error("Could not add subscriber with id $addsubscriber to this forum!");
}
}
} else if (!empty($frm->remove) and !empty($frm->removeselect)) {
foreach ($frm->removeselect as $removesubscriber) {
if (! forum_unsubscribe($removesubscriber, $id)) {
error("Could not remove subscriber with id $removesubscriber from this forum!");
}
}
} else if (!empty($frm->showall)) {
unset($frm->searchtext);
$frm->previoussearch = 0;
}
}
$previoussearch = (!empty($frm->search) or ($frm->previoussearch == 1)) ;
/// Get all existing subscribers for this forum.
if (!$subscribers = forum_subscribed_users($course, $forum, $currentgroup)) {
$subscribers = array();
}
$subscriberarray = array();
foreach ($subscribers as $subscriber) {
$subscriberarray[] = $subscriber->id;
}
$subscriberlist = implode(',', $subscriberarray);
unset($subscriberarray);
/// Get search results excluding any users already subscribed
if (!empty($frm->searchtext) and $previoussearch) {
$searchusers = search_users($course->id, $currentgroup, $frm->searchtext, 'firstname ASC, lastname ASC', $subscriberlist);
}
/// If no search results then get potential subscribers for this forum excluding users already subscribed
if (empty($searchusers)) {
if ($currentgroup) {
$users = get_group_users($currentgroup, 'firstname ASC, lastname ASC', $subscriberlist);
} else {
$users = get_course_users($course->id, 'firstname ASC, lastname ASC', $subscriberlist);
}
if (!$users) {
$users = array();
}
}
$searchtext = (isset($frm->searchtext)) ? $frm->searchtext : "";
$previoussearch = ($previoussearch) ? '1' : '0';
print_simple_box_start('center');
include('subscriber.html');
print_simple_box_end();
print_footer($course);
?>
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