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instances.php
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instances.php
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<?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);
$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 ($confirm) {
$plugin->delete_instance($instance);
redirect($PAGE->url);
}
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 ($instance->status != ENROL_INSTANCE_DISABLED) {
$plugin->update_status($instance, ENROL_INSTANCE_DISABLED);
redirect($PAGE->url);
}
} else if ($action === 'enable') {
$instance = $instances[$instanceid];
$plugin = $plugins[$instance->enrol];
if ($instance->status != ENROL_INSTANCE_ENABLED) {
$plugin->update_status($instance, ENROL_INSTANCE_ENABLED);
redirect($PAGE->url);
}
}
}
}
echo $OUTPUT->header();
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) {
// up/down link
$updown = '';
if ($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 {
$updown[] = html_writer::empty_tag('img', array('src'=>$OUTPUT->pix_url('spacer'), 'alt'=>'', 'class'=>'iconsmall'));
}
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 {
$updown[] = html_writer::empty_tag('img', array('src'=>$OUTPUT->pix_url('spacer'), 'alt'=>'', 'class'=>'iconsmall'));
}
++$updowncount;
// edit links
if ($plugin->instance_deleteable($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)) {
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!
$edit[] = html_writer::empty_tag('img', array('src'=>$OUTPUT->pix_url('t/show'), 'alt'=>'', 'class'=>'iconsmall'));
}
}
}
// link to instance management
if (enrol_is_enabled($instance->enrol)) {
if ($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 (!$link = $plugin->get_newinstance_link($course->id)) {
continue;
}
$candidates[$link->out(false)] = 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();