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Developer Documentation

See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
  • Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
  • PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.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/>.

/**
 * Main course enrolment management UI.
 *
 * @package    core_enrol
 * @copyright  2010 Petr Skoda {@link http://skodak.org}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require('../config.php');

$id         = required_param('id', PARAM_INT); // course id
$action     = optional_param('action', '', PARAM_ALPHANUMEXT);
$instanceid = optional_param('instance', 0, PARAM_INT);
$confirm    = optional_param('confirm', 0, PARAM_BOOL);
$confirm2   = optional_param('confirm2', 0, PARAM_BOOL);

$course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
$context = context_course::instance($course->id, MUST_EXIST);

if ($course->id == SITEID) {
    redirect("$CFG->wwwroot/");
}

require_login($course);
require_capability('moodle/course:enrolreview', $context);

$canconfig = has_capability('moodle/course:enrolconfig', $context);

$PAGE->set_url('/enrol/instances.php', array('id'=>$course->id));
$PAGE->set_pagelayout('admin');
$PAGE->set_title(get_string('enrolmentinstances', 'enrol'));
$PAGE->set_heading($course->fullname);

$instances = enrol_get_instances($course->id, false);
$plugins   = enrol_get_plugins(false);

if ($canconfig and $action and confirm_sesskey()) {
    if (isset($instances[$instanceid]) and isset($plugins[$instances[$instanceid]->enrol])) {
        if ($action === 'up') {
            $order = array_keys($instances);
            $order = array_flip($order);
            $pos = $order[$instanceid];
            if ($pos > 0) {
                $switch = $pos - 1;
                $resorted = array_values($instances);
                $temp = $resorted[$pos];
                $resorted[$pos] = $resorted[$switch];
                $resorted[$switch] = $temp;
                // now update db sortorder
                foreach ($resorted as $sortorder=>$instance) {
                    if ($instance->sortorder != $sortorder) {
                        $instance->sortorder = $sortorder;
                        $DB->update_record('enrol', $instance);
                    }
                }
            }
            redirect($PAGE->url);

        } else if ($action === 'down') {
            $order = array_keys($instances);
            $order = array_flip($order);
            $pos = $order[$instanceid];
            if ($pos < count($instances) - 1) {
                $switch = $pos + 1;
                $resorted = array_values($instances);
                $temp = $resorted[$pos];
                $resorted[$pos] = $resorted[$switch];
                $resorted[$switch] = $temp;
                // now update db sortorder
                foreach ($resorted as $sortorder=>$instance) {
                    if ($instance->sortorder != $sortorder) {
                        $instance->sortorder = $sortorder;
                        $DB->update_record('enrol', $instance);
                    }
                }
            }
            redirect($PAGE->url);

        } else if ($action === 'delete') {
>
$instance = $instances[$instanceid]; $plugin = $plugins[$instance->enrol]; if ($plugin->can_delete_instance($instance)) { if ($confirm) { if (enrol_accessing_via_instance($instance)) { if (!$confirm2) { $yesurl = new moodle_url('/enrol/instances.php', array('id' => $course->id, 'action' => 'delete', 'instance' => $instance->id, 'confirm' => 1, 'confirm2' => 1, 'sesskey' => sesskey())); $displayname = $plugin->get_instance_name($instance); $message = markdown_to_html(get_string('deleteinstanceconfirmself', 'enrol', array('name' => $displayname))); echo $OUTPUT->header(); echo $OUTPUT->confirm($message, $yesurl, $PAGE->url); echo $OUTPUT->footer(); die(); } }
> // Update communication for instance and given action. $plugin->delete_instance($instance); > if (core_communication\api::is_available() && $instance->enrol !== 'guest') { redirect($PAGE->url); > $plugin->update_communication($instance->id, 'remove', $course->id); } > }
echo $OUTPUT->header(); $yesurl = new moodle_url('/enrol/instances.php', array('id' => $course->id, 'action' => 'delete', 'instance' => $instance->id, 'confirm' => 1, 'sesskey' => sesskey())); $displayname = $plugin->get_instance_name($instance); $users = $DB->count_records('user_enrolments', array('enrolid' => $instance->id)); if ($users) { $message = markdown_to_html(get_string('deleteinstanceconfirm', 'enrol', array('name' => $displayname, 'users' => $users))); } else { $message = markdown_to_html(get_string('deleteinstancenousersconfirm', 'enrol', array('name' => $displayname))); } echo $OUTPUT->confirm($message, $yesurl, $PAGE->url); echo $OUTPUT->footer(); die(); } } else if ($action === 'disable') {
>
$instance = $instances[$instanceid]; $plugin = $plugins[$instance->enrol]; if ($plugin->can_hide_show_instance($instance)) { if ($instance->status != ENROL_INSTANCE_DISABLED) { if (enrol_accessing_via_instance($instance)) { if (!$confirm2) { $yesurl = new moodle_url('/enrol/instances.php', array('id' => $course->id, 'action' => 'disable', 'instance' => $instance->id, 'confirm2' => 1, 'sesskey' => sesskey())); $displayname = $plugin->get_instance_name($instance); $message = markdown_to_html(get_string('disableinstanceconfirmself', 'enrol', array('name' => $displayname))); echo $OUTPUT->header(); echo $OUTPUT->confirm($message, $yesurl, $PAGE->url); echo $OUTPUT->footer(); die(); } }
> // Update communication for instance and given action. $plugin->update_status($instance, ENROL_INSTANCE_DISABLED); > if (core_communication\api::is_available() && $instance->enrol !== 'guest') { redirect($PAGE->url); > $plugin->update_communication($instance->id, 'remove', $course->id); } > }
} } else if ($action === 'enable') {
>
$instance = $instances[$instanceid]; $plugin = $plugins[$instance->enrol]; if ($plugin->can_hide_show_instance($instance)) { if ($instance->status != ENROL_INSTANCE_ENABLED) {
> // Update communication for instance and given action. $plugin->update_status($instance, ENROL_INSTANCE_ENABLED); > if (core_communication\api::is_available() && $instance->enrol !== 'guest') { redirect($PAGE->url); > $plugin->update_communication($instance->id, 'add', $course->id); } > }
} } } } echo $OUTPUT->header(); echo $OUTPUT->render_participants_tertiary_nav($course);
< echo $OUTPUT->heading(get_string('enrolmentinstances', 'enrol'));
echo $OUTPUT->box_start('generalbox boxaligncenter boxwidthnormal'); // display strings $strup = get_string('up'); $strdown = get_string('down'); $strdelete = get_string('delete'); $strenable = get_string('enable'); $strdisable = get_string('disable'); $strmanage = get_string('manageinstance', 'enrol'); $table = new html_table(); $table->head = array(get_string('name'), get_string('users'), $strup.'/'.$strdown, get_string('edit')); $table->align = array('left', 'center', 'center', 'center'); $table->width = '100%'; $table->data = array(); // iterate through enrol plugins and add to the display table $updowncount = 1; $icount = count($instances); $url = new moodle_url('/enrol/instances.php', array('sesskey'=>sesskey(), 'id'=>$course->id)); foreach ($instances as $instance) { if (!isset($plugins[$instance->enrol])) { continue; } $plugin = $plugins[$instance->enrol]; $displayname = $plugin->get_instance_name($instance); if (!enrol_is_enabled($instance->enrol) or $instance->status != ENROL_INSTANCE_ENABLED) { $displayname = html_writer::tag('span', $displayname, array('class'=>'dimmed_text')); } $users = $DB->count_records('user_enrolments', array('enrolid'=>$instance->id)); $updown = array(); $edit = array(); if ($canconfig) { if ($updowncount > 1) { $aurl = new moodle_url($url, array('action'=>'up', 'instance'=>$instance->id)); $updown[] = $OUTPUT->action_icon($aurl, new pix_icon('t/up', $strup, 'core', array('class' => 'iconsmall'))); } else { $updown[] = $OUTPUT->spacer(); } if ($updowncount < $icount) { $aurl = new moodle_url($url, array('action'=>'down', 'instance'=>$instance->id)); $updown[] = $OUTPUT->action_icon($aurl, new pix_icon('t/down', $strdown, 'core', array('class' => 'iconsmall'))); } else { $updown[] = $OUTPUT->spacer(); } ++$updowncount; if ($plugin->can_delete_instance($instance)) { $aurl = new moodle_url($url, array('action'=>'delete', 'instance'=>$instance->id)); $edit[] = $OUTPUT->action_icon($aurl, new pix_icon('t/delete', $strdelete, 'core', array('class' => 'iconsmall'))); } if (enrol_is_enabled($instance->enrol) && $plugin->can_hide_show_instance($instance)) { if ($instance->status == ENROL_INSTANCE_ENABLED) { $aurl = new moodle_url($url, array('action'=>'disable', 'instance'=>$instance->id)); $edit[] = $OUTPUT->action_icon($aurl, new pix_icon('t/hide', $strdisable, 'core', array('class' => 'iconsmall'))); } else if ($instance->status == ENROL_INSTANCE_DISABLED) { $aurl = new moodle_url($url, array('action'=>'enable', 'instance'=>$instance->id)); $edit[] = $OUTPUT->action_icon($aurl, new pix_icon('t/show', $strenable, 'core', array('class' => 'iconsmall'))); } else { // plugin specific state - do not mess with it! $edit[] = $OUTPUT->pix_icon('t/show', get_string('show')); } } } // link to instance management if (enrol_is_enabled($instance->enrol) && $canconfig) { if ($icons = $plugin->get_action_icons($instance)) { $edit = array_merge($edit, $icons); } } // Add a row to the table. $table->data[] = array($displayname, $users, implode('', $updown), implode('', $edit)); } echo html_writer::table($table); // access security is in each plugin $candidates = array(); foreach (enrol_get_plugins(true) as $name=>$plugin) { if ($plugin->use_standard_editing_ui()) { if ($plugin->can_add_instance($course->id)) { // Standard add/edit UI. $params = array('type' => $name, 'courseid' => $course->id); $url = new moodle_url('/enrol/editinstance.php', $params); $link = $url->out(false); $candidates[$link] = get_string('pluginname', 'enrol_'.$name); } } else if ($url = $plugin->get_newinstance_link($course->id)) { // Old custom UI. $link = $url->out(false); $candidates[$link] = get_string('pluginname', 'enrol_'.$name); } } if ($candidates) { $select = new url_select($candidates); $select->set_label(get_string('addinstance', 'enrol')); echo $OUTPUT->render($select); } echo $OUTPUT->box_end(); echo $OUTPUT->footer();