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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

require_once('../../../config.php');
require_once('../lib.php');

$id      = required_param('id', PARAM_INT);
$groupid = optional_param('groupid', 0, PARAM_INT);  // Only for teachers.
$message = optional_param('message', '', PARAM_CLEANHTML);
$refresh = optional_param('refresh', '', PARAM_RAW); // Force refresh.
$last    = optional_param('last', 0, PARAM_INT);     // Last time refresh or sending.
$newonly = optional_param('newonly', 0, PARAM_BOOL); // Show only new messages.

$url = new moodle_url('/mod/chat/gui_basic/index.php', array('id' => $id));
if ($groupid !== 0) {
    $url->param('groupid', $groupid);
}
if ($message !== 0) {
    $url->param('message', $message);
}
if ($refresh !== 0) {
    $url->param('refresh', $refresh);
}
if ($last !== 0) {
    $url->param('last', $last);
}
if ($newonly !== 0) {
    $url->param('newonly', $newonly);
}
$PAGE->set_url($url);

if (!$chat = $DB->get_record('chat', array('id' => $id))) {
< print_error('invalidid', 'chat');
> throw new \moodle_exception('invalidid', 'chat');
} if (!$course = $DB->get_record('course', array('id' => $chat->course))) {
< print_error('invalidcourseid');
> throw new \moodle_exception('invalidcourseid');
} if (!$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
< print_error('invalidcoursemodule');
> throw new \moodle_exception('invalidcoursemodule');
} $context = context_module::instance($cm->id); require_login($course, false, $cm); require_capability('mod/chat:chat', $context); $PAGE->set_pagelayout('popup'); $PAGE->set_popup_notification_allowed(false); // Check to see if groups are being used here. if ($groupmode = groups_get_activity_groupmode($cm)) { // Groups are being used. if ($groupid = groups_get_activity_group($cm)) { if (!$group = groups_get_group($groupid)) {
< print_error('invalidgroupid');
> throw new \moodle_exception('invalidgroupid');
} $groupname = ': '.$group->name; } else { $groupname = ': '.get_string('allparticipants'); } } else { $groupid = 0; $groupname = ''; } $strchat = get_string('modulename', 'chat'); // Must be before current_language() in chat_login_user() to force course language! $strchats = get_string('modulenameplural', 'chat'); $stridle = get_string('idle', 'chat'); if (!$chatsid = chat_login_user($chat->id, 'basic', $groupid, $course)) {
< print_error('cantlogin', 'chat');
> throw new \moodle_exception('cantlogin', 'chat');
} if (!$chatusers = chat_get_users($chat->id, $groupid, $cm->groupingid)) {
< print_error('errornousers', 'chat');
> throw new \moodle_exception('errornousers', 'chat');
} $DB->set_field('chat_users', 'lastping', time(), array('sid' => $chatsid)); if (!isset($SESSION->chatprefs)) { $SESSION->chatprefs = array(); } if (!isset($SESSION->chatprefs[$chat->id])) { $SESSION->chatprefs[$chat->id] = array(); $SESSION->chatprefs[$chat->id]['chatentered'] = time(); } $chatentered = $SESSION->chatprefs[$chat->id]['chatentered']; $refreshedmessage = ''; if (!empty($refresh) and data_submitted()) { $refreshedmessage = $message; chat_delete_old_users(); } else if (empty($refresh) and data_submitted() and confirm_sesskey()) { if ($message != '') { $chatuser = $DB->get_record('chat_users', array('sid' => $chatsid)); chat_send_chatmessage($chatuser, $message, 0, $cm); $DB->set_field('chat_users', 'lastmessageping', time(), array('sid' => $chatsid)); } chat_delete_old_users(); $url = new moodle_url('/mod/chat/gui_basic/index.php', array('id' => $id, 'newonly' => $newonly, 'last' => $last)); redirect($url); } $PAGE->set_title("$strchat: $course->shortname: ".format_string($chat->name, true)."$groupname"); echo $OUTPUT->header(); echo $OUTPUT->container_start(null, 'page-mod-chat-gui_basic'); echo $OUTPUT->heading(format_string($course->shortname), 1); echo $OUTPUT->heading(format_string($chat->name), 2); echo $OUTPUT->heading(get_string('participants'), 3); echo $OUTPUT->box_start('generalbox', 'participants'); echo '<ul>'; foreach ($chatusers as $chu) { echo '<li class="clearfix">'; echo $OUTPUT->user_picture($chu, array('size' => 24, 'courseid' => $course->id)); echo '<div class="userinfo">'; echo fullname($chu).' '; if ($idle = time() - $chu->lastmessageping) { echo '<span class="idle">'.$stridle.' '.format_time($idle).'</span>'; } else { echo '<span class="idle" />'; } echo '</div>'; echo '</li>'; } echo '</ul>'; echo $OUTPUT->box_end(); echo '<div id="send">'; echo '<form id="editing" method="post" action="index.php">'; echo '<h2><label for="message">' . get_string('sendmessage', 'message'); echo $OUTPUT->help_icon('usingchat', 'chat'); echo '</label></h2>'; echo '<div class="mb-1">'; echo '<input type="text" id="message" class="form-control" name="message" value="'.s($refreshedmessage, true).'" size="60" />'; echo '</div><div class="mb-1">'; echo '<input type="hidden" name="id" value="'.$id.'" />'; echo '<input type="hidden" name="groupid" value="'.$groupid.'" />'; echo '<input type="hidden" name="last" value="'.time().'" />'; echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />'; echo '<input type="submit" class="btn btn-primary" value="'.get_string('submit').'" />&nbsp;'; echo '<input type="submit" class="btn btn-secondary" name="refresh" value="'.get_string('refresh').'" />'; echo '<input type="checkbox" class="mx-1" name="newonly" id="newonly" '.($newonly ? 'checked="checked" ' : '').'/>'; echo '<label for="newonly">'.get_string('newonlymsg', 'message').'</label>'; echo '</div>'; echo '</form>'; echo '</div>'; echo '<div id="messages">'; echo $OUTPUT->heading(get_string('messages', 'chat'), 3); $allmessages = array(); $options = new stdClass(); $options->para = false; $options->newlines = true; $params = array('last' => $last, 'groupid' => $groupid, 'chatid' => $chat->id, 'chatentered' => $chatentered); if ($newonly) { $lastsql = "AND timestamp > :last"; } else { $lastsql = ""; } $groupselect = $groupid ? "AND (groupid=:groupid OR groupid=0)" : ""; $messages = $DB->get_records_select("chat_messages_current", "chatid = :chatid AND timestamp > :chatentered $lastsql $groupselect", $params, "timestamp DESC"); if ($messages) { foreach ($messages as $message) { $allmessages[] = chat_format_message($message, $course->id, $USER); } } echo '<table class="generaltable"><tbody>'; echo '<tr> <th scope="col" class="cell">' . get_string('from') . '</th> <th scope="col" class="cell">' . get_string('message', 'message') . '</th> <th scope="col" class="cell">' . get_string('time') . '</th> </tr>'; if (empty($allmessages)) { echo get_string('nomessagesfound', 'message'); } else { foreach ($allmessages as $message) { echo $message->basic; } } echo '</tbody></table>'; echo '</div>'; echo $OUTPUT->container_end(); echo $OUTPUT->footer();