mirror of
https://github.com/moodle/moodle.git
synced 2025-02-15 13:24:56 +01:00
115 lines
3.9 KiB
PHP
115 lines
3.9 KiB
PHP
<?php
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// Subscribe to or unsubscribe from a forum.
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require_once("../../config.php");
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require_once("lib.php");
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$id = required_param('id',PARAM_INT); // The forum to subscribe or unsubscribe to
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$force = optional_param('force','',PARAM_ALPHA); // Force everyone to be subscribed to this forum?
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$user = optional_param('user',0,PARAM_INT);
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$url = new moodle_url($CFG->wwwroot.'/mod/forum/subscribe.php', array('id'=>$id));
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if ($force !== '') {
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$url->param('force', $force);
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}
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if ($user !== 0) {
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$url->param('user', $user);
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}
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$PAGE->set_url($url);
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if (! $forum = $DB->get_record("forum", array("id" => $id))) {
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print_error('invalidforumid', 'forum');
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}
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if (! $course = $DB->get_record("course", array("id" => $forum->course))) {
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print_error('invalidcoursemodule');
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}
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if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
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$context = get_context_instance(CONTEXT_MODULE, $cm->id);
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} else {
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$cm->id = 0;
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$context = get_context_instance(CONTEXT_MODULE, $cm->id);
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}
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if ($user) {
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if (!has_capability('mod/forum:managesubscriptions', $context)) {
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print_error('nopermissiontosubscribe', 'forum');
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}
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if (!$user = $DB->get_record("user", array("id" => $user))) {
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print_error('invaliduserid');
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}
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} else {
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$user = $USER;
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}
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if (isset($cm->groupmode) && empty($course->groupmodeforce)) {
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$groupmode = $cm->groupmode;
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} else {
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$groupmode = $course->groupmode;
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}
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if ($groupmode && !forum_is_subscribed($user->id, $forum) && !has_capability('moodle/site:accessallgroups', $context)) {
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if (!groups_get_all_groups($course->id, $USER->id)) {
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print_error('cannotsubscribe', 'forum');
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}
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}
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require_login($course->id, false, $cm);
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if (has_capability('moodle/legacy:guest', get_context_instance(CONTEXT_SYSTEM), 0, false)) { // Guests can't subscribe
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$PAGE->set_title($course->shortname);
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$PAGE->set_heading($course->fullname);
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echo $OUTPUT->header();
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echo $OUTPUT->confirm(get_string('noguestsubscribe', 'forum').'<br /><br />'.get_string('liketologin'),
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get_login_url(), new moodle_url());
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echo $OUTPUT->footer();
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exit;
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}
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$returnto = optional_param('backtoindex',0,PARAM_INT)
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? "index.php?id=".$course->id
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: "view.php?f=$id";
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if ($force and has_capability('mod/forum:managesubscriptions', $context)) {
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if (forum_is_forcesubscribed($forum)) {
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forum_forcesubscribe($forum->id, 0);
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redirect($returnto, get_string("everyonecannowchoose", "forum"), 1);
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} else {
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forum_forcesubscribe($forum->id, 1);
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redirect($returnto, get_string("everyoneisnowsubscribed", "forum"), 1);
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}
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}
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if (forum_is_forcesubscribed($forum)) {
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redirect($returnto, get_string("everyoneisnowsubscribed", "forum"), 1);
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}
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$info->name = fullname($user);
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$info->forum = format_string($forum->name);
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if (forum_is_subscribed($user->id, $forum->id)) {
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if (forum_unsubscribe($user->id, $forum->id)) {
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add_to_log($course->id, "forum", "unsubscribe", "view.php?f=$forum->id", $forum->id, $cm->id);
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redirect($returnto, get_string("nownotsubscribed", "forum", $info), 1);
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} else {
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print_error('cannotunsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
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}
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} else { // subscribe
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if ($forum->forcesubscribe == FORUM_DISALLOWSUBSCRIBE &&
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!has_capability('mod/forum:managesubscriptions', $context)) {
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print_error('disallowsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
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}
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if (!has_capability('mod/forum:viewdiscussion', $context)) {
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print_error('cannotsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
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}
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if (forum_subscribe($user->id, $forum->id) ) {
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add_to_log($course->id, "forum", "subscribe", "view.php?f=$forum->id", $forum->id, $cm->id);
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redirect($returnto, get_string("nowsubscribed", "forum", $info), 1);
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} else {
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print_error('cannotsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
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}
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}
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