2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
18 * Manual enrolment plugin main library file.
20 * @package enrol_manual
21 * @copyright 2010 Petr Skoda {@link http://skodak.org}
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 defined('MOODLE_INTERNAL') || die();
27 class enrol_manual_plugin extends enrol_plugin {
29 protected $lasternoller = null;
30 protected $lasternollerinstanceid = 0;
32 public function roles_protected() {
33 // Users may tweak the roles later.
37 public function allow_enrol(stdClass $instance) {
38 // Users with enrol cap may unenrol other users manually manually.
42 public function allow_unenrol(stdClass $instance) {
43 // Users with unenrol cap may unenrol other users manually manually.
47 public function allow_manage(stdClass $instance) {
48 // Users with manage cap may tweak period and status.
53 * Returns link to manual enrol UI if exists.
54 * Does the access control tests automatically.
56 * @param stdClass $instance
59 public function get_manual_enrol_link($instance) {
60 $name = $this->get_name();
61 if ($instance->enrol !== $name) {
62 throw new coding_exception('invalid enrol instance!');
65 if (!enrol_is_enabled($name)) {
69 $context = context_course::instance($instance->courseid, MUST_EXIST);
71 if (!has_capability('enrol/manual:enrol', $context)) {
72 // Note: manage capability not used here because it is used for editing
73 // of existing enrolments which is not possible here.
77 return new moodle_url('/enrol/manual/manage.php', array('enrolid'=>$instance->id, 'id'=>$instance->courseid));
81 * Return true if we can add a new instance to this course.
83 * @param int $courseid
86 public function can_add_instance($courseid) {
89 $context = context_course::instance($courseid, MUST_EXIST);
90 if (!has_capability('moodle/course:enrolconfig', $context) or !has_capability('enrol/manual:config', $context)) {
94 if ($DB->record_exists('enrol', array('courseid'=>$courseid, 'enrol'=>'manual'))) {
95 // Multiple instances not supported.
103 * Returns edit icons for the page with list of instances.
104 * @param stdClass $instance
107 public function get_action_icons(stdClass $instance) {
110 $context = context_course::instance($instance->courseid);
113 if (has_capability('enrol/manual:enrol', $context) or has_capability('enrol/manual:unenrol', $context)) {
114 $managelink = new moodle_url("/enrol/manual/manage.php", array('enrolid'=>$instance->id));
115 $icons[] = $OUTPUT->action_icon($managelink, new pix_icon('t/enrolusers', get_string('enrolusers', 'enrol_manual'), 'core', array('class'=>'iconsmall')));
117 $parenticons = parent::get_action_icons($instance);
118 $icons = array_merge($icons, $parenticons);
124 * Add new instance of enrol plugin with default settings.
125 * @param stdClass $course
126 * @return int id of new instance, null if can not be created
128 public function add_default_instance($course) {
129 $expirynotify = $this->get_config('expirynotify', 0);
130 if ($expirynotify == 2) {
137 'status' => $this->get_config('status'),
138 'roleid' => $this->get_config('roleid', 0),
139 'enrolperiod' => $this->get_config('enrolperiod', 0),
140 'expirynotify' => $expirynotify,
141 'notifyall' => $notifyall,
142 'expirythreshold' => $this->get_config('expirythreshold', 86400),
144 return $this->add_instance($course, $fields);
148 * Add new instance of enrol plugin.
149 * @param stdClass $course
150 * @param array instance fields
151 * @return int id of new instance, null if can not be created
153 public function add_instance($course, array $fields = NULL) {
156 if ($DB->record_exists('enrol', array('courseid'=>$course->id, 'enrol'=>'manual'))) {
157 // only one instance allowed, sorry
161 return parent::add_instance($course, $fields);
165 * Update instance of enrol plugin.
166 * @param stdClass $instance
167 * @param stdClass $data modified instance fields
170 public function update_instance($instance, $data) {
173 // Delete all other instances, leaving only one.
174 if ($instances = $DB->get_records('enrol', array('courseid' => $instance->courseid, 'enrol' => 'manual'), 'id ASC')) {
175 foreach ($instances as $anotherinstance) {
176 if ($anotherinstance->id != $instance->id) {
177 $this->delete_instance($anotherinstance);
181 return parent::update_instance($instance, $data);
185 * Returns a button to manually enrol users through the manual enrolment plugin.
187 * By default the first manual enrolment plugin instance available in the course is used.
188 * If no manual enrolment instances exist within the course then false is returned.
190 * This function also adds a quickenrolment JS ui to the page so that users can be enrolled
193 * @param course_enrolment_manager $manager
194 * @return enrol_user_button
196 public function get_manual_enrol_button(course_enrolment_manager $manager) {
198 require_once($CFG->dirroot.'/cohort/lib.php');
201 $instances = array();
202 foreach ($manager->get_enrolment_instances() as $tempinstance) {
203 if ($tempinstance->enrol == 'manual') {
204 if ($instance === null) {
205 $instance = $tempinstance;
207 $instances[] = array('id' => $tempinstance->id, 'name' => $this->get_instance_name($tempinstance));
210 if (empty($instance)) {
214 if (!$manuallink = $this->get_manual_enrol_link($instance)) {
218 $button = new enrol_user_button($manuallink, get_string('enrolusers', 'enrol_manual'), 'get');
219 $button->class .= ' enrol_manual_plugin';
221 $startdate = $manager->get_course()->startdate;
222 if (!$defaultstart = get_config('enrol_manual', 'enrolstart')) {
223 // Default to now if there is no system setting.
226 $startdateoptions = array();
227 $dateformat = get_string('strftimedatefullshort');
228 if ($startdate > 0) {
229 $startdateoptions[2] = get_string('coursestart') . ' (' . userdate($startdate, $dateformat) . ')';
232 $today = make_timestamp(date('Y', $now), date('m', $now), date('d', $now), 0, 0, 0);
233 $startdateoptions[3] = get_string('today') . ' (' . userdate($today, $dateformat) . ')';
234 $startdateoptions[4] = get_string('now', 'enrol_manual') . ' (' . userdate($now, get_string('strftimedatetimeshort')) . ')';
235 $defaultduration = $instance->enrolperiod > 0 ? $instance->enrolperiod / 86400 : '';
237 $modules = array('moodle-enrol_manual-quickenrolment', 'moodle-enrol_manual-quickenrolment-skin');
239 'instances' => $instances,
240 'courseid' => $instance->courseid,
241 'ajaxurl' => '/enrol/manual/ajax.php',
242 'url' => $manager->get_moodlepage()->url->out(false),
243 'optionsStartDate' => $startdateoptions,
244 'defaultRole' => $instance->roleid,
245 'defaultDuration' => $defaultduration,
246 'defaultStartDate' => (int)$defaultstart,
247 'disableGradeHistory' => $CFG->disablegradehistory,
248 'recoverGradesDefault'=> '',
249 'cohortsAvailable' => cohort_get_available_cohorts($manager->get_context(), COHORT_WITH_NOTENROLLED_MEMBERS_ONLY, 0, 1) ? true : false
252 if ($CFG->recovergradesdefault) {
253 $arguments['recoverGradesDefault'] = ' checked="checked"';
256 $function = 'M.enrol_manual.quickenrolment.init';
257 $button->require_yui_module($modules, $function, array($arguments));
258 $button->strings_for_js(array(
266 'errajaxfailedenrol',
275 'finishenrollingusers',
276 'recovergrades'), 'enrol');
277 $button->strings_for_js(array('browseusers', 'browsecohorts'), 'enrol_manual');
278 $button->strings_for_js('assignroles', 'role');
279 $button->strings_for_js('startingfrom', 'moodle');
285 * Enrol cron support.
288 public function cron() {
289 $trace = new text_progress_trace();
290 $this->sync($trace, null);
291 $this->send_expiry_notifications($trace);
295 * Sync all meta course links.
297 * @param progress_trace $trace
298 * @param int $courseid one course, empty mean all
299 * @return int 0 means ok, 1 means error, 2 means plugin disabled
301 public function sync(progress_trace $trace, $courseid = null) {
304 if (!enrol_is_enabled('manual')) {
309 // Unfortunately this may take a long time, execution can be interrupted safely here.
310 core_php_time_limit::raise();
311 raise_memory_limit(MEMORY_HUGE);
313 $trace->output('Verifying manual enrolment expiration...');
315 $params = array('now'=>time(), 'useractive'=>ENROL_USER_ACTIVE, 'courselevel'=>CONTEXT_COURSE);
318 $coursesql = "AND e.courseid = :courseid";
319 $params['courseid'] = $courseid;
322 // Deal with expired accounts.
323 $action = $this->get_config('expiredaction', ENROL_EXT_REMOVED_KEEP);
325 if ($action == ENROL_EXT_REMOVED_UNENROL) {
326 $instances = array();
327 $sql = "SELECT ue.*, e.courseid, c.id AS contextid
328 FROM {user_enrolments} ue
329 JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'manual')
330 JOIN {context} c ON (c.instanceid = e.courseid AND c.contextlevel = :courselevel)
331 WHERE ue.timeend > 0 AND ue.timeend < :now
333 $rs = $DB->get_recordset_sql($sql, $params);
334 foreach ($rs as $ue) {
335 if (empty($instances[$ue->enrolid])) {
336 $instances[$ue->enrolid] = $DB->get_record('enrol', array('id'=>$ue->enrolid));
338 $instance = $instances[$ue->enrolid];
339 // Always remove all manually assigned roles here, this may break enrol_self roles but we do not want hardcoded hacks here.
340 role_unassign_all(array('userid'=>$ue->userid, 'contextid'=>$ue->contextid, 'component'=>'', 'itemid'=>0), true);
341 $this->unenrol_user($instance, $ue->userid);
342 $trace->output("unenrolling expired user $ue->userid from course $instance->courseid", 1);
347 } else if ($action == ENROL_EXT_REMOVED_SUSPENDNOROLES or $action == ENROL_EXT_REMOVED_SUSPEND) {
348 $instances = array();
349 $sql = "SELECT ue.*, e.courseid, c.id AS contextid
350 FROM {user_enrolments} ue
351 JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'manual')
352 JOIN {context} c ON (c.instanceid = e.courseid AND c.contextlevel = :courselevel)
353 WHERE ue.timeend > 0 AND ue.timeend < :now
354 AND ue.status = :useractive
356 $rs = $DB->get_recordset_sql($sql, $params);
357 foreach ($rs as $ue) {
358 if (empty($instances[$ue->enrolid])) {
359 $instances[$ue->enrolid] = $DB->get_record('enrol', array('id'=>$ue->enrolid));
361 $instance = $instances[$ue->enrolid];
362 if ($action == ENROL_EXT_REMOVED_SUSPENDNOROLES) {
363 // Remove all manually assigned roles here, this may break enrol_self roles but we do not want hardcoded hacks here.
364 role_unassign_all(array('userid'=>$ue->userid, 'contextid'=>$ue->contextid, 'component'=>'', 'itemid'=>0), true);
365 $this->update_user_enrol($instance, $ue->userid, ENROL_USER_SUSPENDED);
366 $trace->output("suspending expired user $ue->userid in course $instance->courseid, roles unassigned", 1);
368 $this->update_user_enrol($instance, $ue->userid, ENROL_USER_SUSPENDED);
369 $trace->output("suspending expired user $ue->userid in course $instance->courseid, roles kept", 1);
376 // ENROL_EXT_REMOVED_KEEP means no changes.
379 $trace->output('...manual enrolment updates finished.');
386 * Returns the user who is responsible for manual enrolments in given instance.
388 * Usually it is the first editing teacher - the person with "highest authority"
389 * as defined by sort_by_roleassignment_authority() having 'enrol/manual:manage'
392 * @param int $instanceid enrolment instance id
393 * @return stdClass user record
395 protected function get_enroller($instanceid) {
398 if ($this->lasternollerinstanceid == $instanceid and $this->lasternoller) {
399 return $this->lasternoller;
402 $instance = $DB->get_record('enrol', array('id'=>$instanceid, 'enrol'=>$this->get_name()), '*', MUST_EXIST);
403 $context = context_course::instance($instance->courseid);
405 if ($users = get_enrolled_users($context, 'enrol/manual:manage')) {
406 $users = sort_by_roleassignment_authority($users, $context);
407 $this->lasternoller = reset($users);
410 $this->lasternoller = parent::get_enroller($instanceid);
413 $this->lasternollerinstanceid = $instanceid;
415 return $this->lasternoller;
419 * Gets an array of the user enrolment actions.
421 * @param course_enrolment_manager $manager
422 * @param stdClass $ue A user enrolment object
423 * @return array An array of user_enrolment_actions
425 public function get_user_enrolment_actions(course_enrolment_manager $manager, $ue) {
427 $context = $manager->get_context();
428 $instance = $ue->enrolmentinstance;
429 $params = $manager->get_moodlepage()->url->params();
430 $params['ue'] = $ue->id;
431 if ($this->allow_unenrol_user($instance, $ue) && has_capability("enrol/manual:unenrol", $context)) {
432 $url = new moodle_url('/enrol/unenroluser.php', $params);
433 $actions[] = new user_enrolment_action(new pix_icon('t/delete', ''), get_string('unenrol', 'enrol'), $url, array('class'=>'unenrollink', 'rel'=>$ue->id));
435 if ($this->allow_manage($instance) && has_capability("enrol/manual:manage", $context)) {
436 $url = new moodle_url('/enrol/editenrolment.php', $params);
437 $actions[] = new user_enrolment_action(new pix_icon('t/edit', ''), get_string('edit'), $url, array('class'=>'editenrollink', 'rel'=>$ue->id));
443 * The manual plugin has several bulk operations that can be performed.
444 * @param course_enrolment_manager $manager
447 public function get_bulk_operations(course_enrolment_manager $manager) {
449 require_once($CFG->dirroot.'/enrol/manual/locallib.php');
450 $context = $manager->get_context();
451 $bulkoperations = array();
452 if (has_capability("enrol/manual:manage", $context)) {
453 $bulkoperations['editselectedusers'] = new enrol_manual_editselectedusers_operation($manager, $this);
455 if (has_capability("enrol/manual:unenrol", $context)) {
456 $bulkoperations['deleteselectedusers'] = new enrol_manual_deleteselectedusers_operation($manager, $this);
458 return $bulkoperations;
462 * Restore instance and map settings.
464 * @param restore_enrolments_structure_step $step
465 * @param stdClass $data
466 * @param stdClass $course
469 public function restore_instance(restore_enrolments_structure_step $step, stdClass $data, $course, $oldid) {
471 // There is only I manual enrol instance allowed per course.
472 if ($instances = $DB->get_records('enrol', array('courseid'=>$data->courseid, 'enrol'=>'manual'), 'id')) {
473 $instance = reset($instances);
474 $instanceid = $instance->id;
476 $instanceid = $this->add_instance($course, (array)$data);
478 $step->set_mapping('enrol', $oldid, $instanceid);
482 * Restore user enrolment.
484 * @param restore_enrolments_structure_step $step
485 * @param stdClass $data
486 * @param stdClass $instance
487 * @param int $oldinstancestatus
490 public function restore_user_enrolment(restore_enrolments_structure_step $step, $data, $instance, $userid, $oldinstancestatus) {
493 // Note: this is a bit tricky because other types may be converted to manual enrolments,
494 // and manual is restricted to one enrolment per user.
496 $ue = $DB->get_record('user_enrolments', array('enrolid'=>$instance->id, 'userid'=>$userid));
498 if ($ue and $ue->status == ENROL_USER_ACTIVE) {
499 // We do not want to restrict current active enrolments, let's kind of merge the times only.
500 // This prevents some teacher lockouts too.
501 if ($data->status == ENROL_USER_ACTIVE) {
502 if ($data->timestart > $ue->timestart) {
503 $data->timestart = $ue->timestart;
507 if ($data->timeend == 0) {
508 if ($ue->timeend != 0) {
511 } else if ($ue->timeend == 0) {
513 } else if ($data->timeend < $ue->timeend) {
514 $data->timeend = $ue->timeend;
519 if ($instance->status == ENROL_INSTANCE_ENABLED and $oldinstancestatus != ENROL_INSTANCE_ENABLED) {
520 // Make sure that user enrolments are not activated accidentally,
521 // we do it only here because it is not expected that enrolments are migrated to other plugins.
522 $data->status = ENROL_USER_SUSPENDED;
528 $this->enrol_user($instance, $userid, null, $data->timestart, $data->timeend, $data->status);
533 * Restore role assignment.
535 * @param stdClass $instance
538 * @param int $contextid
540 public function restore_role_assignment($instance, $roleid, $userid, $contextid) {
541 // This is necessary only because we may migrate other types to this instance,
542 // we do not use component in manual or self enrol.
543 role_assign($roleid, $userid, $contextid, '', 0);
547 * Restore user group membership.
548 * @param stdClass $instance
549 * @param int $groupid
552 public function restore_group_member($instance, $groupid, $userid) {
554 require_once("$CFG->dirroot/group/lib.php");
556 // This might be called when forcing restore as manual enrolments.
558 groups_add_member($groupid, $userid);
562 * Is it possible to delete enrol instance via standard UI?
564 * @param object $instance
567 public function can_delete_instance($instance) {
568 $context = context_course::instance($instance->courseid);
569 return has_capability('enrol/manual:config', $context);
573 * Is it possible to hide/show enrol instance via standard UI?
575 * @param stdClass $instance
578 public function can_hide_show_instance($instance) {
579 $context = context_course::instance($instance->courseid);
580 return has_capability('enrol/manual:config', $context);
584 * Enrol all not enrolled cohort members into course via enrol instance.
586 * @param stdClass $instance
587 * @param int $cohortid
588 * @param int $roleid optional role id
589 * @param int $timestart 0 means unknown
590 * @param int $timeend 0 means forever
591 * @param int $status default to ENROL_USER_ACTIVE for new enrolments, no change by default in updates
592 * @param bool $recovergrades restore grade history
594 public function enrol_cohort(stdClass $instance, $cohortid, $roleid = null, $timestart = 0, $timeend = 0, $status = null, $recovergrades = null) {
596 $context = context_course::instance($instance->courseid);
597 list($esql, $params) = get_enrolled_sql($context);
598 $sql = "SELECT cm.userid FROM {cohort_members} cm LEFT JOIN ($esql) u ON u.id = cm.userid ".
599 "WHERE cm.cohortid = :cohortid AND u.id IS NULL";
600 $params['cohortid'] = $cohortid;
601 $members = $DB->get_fieldset_sql($sql, $params);
602 foreach ($members as $userid) {
603 $this->enrol_user($instance, $userid, $roleid, $timestart, $timeend, $status, $recovergrades);
608 * We are a good plugin and don't invent our own UI/validation code path.
612 public function use_standard_editing_ui() {
617 * Return an array of valid options for the status.
621 protected function get_status_options() {
622 $options = array(ENROL_INSTANCE_ENABLED => get_string('yes'),
623 ENROL_INSTANCE_DISABLED => get_string('no'));
628 * Return an array of valid options for the roleid.
630 * @param stdClass $instance
631 * @param context $context
634 protected function get_roleid_options($instance, $context) {
636 $roles = get_default_enrol_roles($context, $instance->roleid);
638 $roles = get_default_enrol_roles($context, $this->get_config('roleid'));
644 * Return an array of valid options for the expirynotify.
648 protected function get_expirynotify_options() {
650 0 => get_string('no'),
651 1 => get_string('expirynotifyenroller', 'core_enrol'),
652 2 => get_string('expirynotifyall', 'core_enrol')
658 * Add elements to the edit instance form.
660 * @param stdClass $instance
661 * @param MoodleQuickForm $mform
662 * @param context $context
665 public function edit_instance_form($instance, MoodleQuickForm $mform, $context) {
667 $options = $this->get_status_options();
668 $mform->addElement('select', 'status', get_string('status', 'enrol_manual'), $options);
669 $mform->addHelpButton('status', 'status', 'enrol_manual');
670 $mform->setDefault('status', $this->get_config('status'));
672 $roles = $this->get_roleid_options($instance, $context);
673 $mform->addElement('select', 'roleid', get_string('defaultrole', 'role'), $roles);
674 $mform->setDefault('roleid', $this->get_config('roleid'));
676 $options = array('optional' => true, 'defaultunit' => 86400);
677 $mform->addElement('duration', 'enrolperiod', get_string('defaultperiod', 'enrol_manual'), $options);
678 $mform->setDefault('enrolperiod', $this->get_config('enrolperiod'));
679 $mform->addHelpButton('enrolperiod', 'defaultperiod', 'enrol_manual');
681 $options = $this->get_expirynotify_options();
682 $mform->addElement('select', 'expirynotify', get_string('expirynotify', 'core_enrol'), $options);
683 $mform->addHelpButton('expirynotify', 'expirynotify', 'core_enrol');
685 $options = array('optional' => false, 'defaultunit' => 86400);
686 $mform->addElement('duration', 'expirythreshold', get_string('expirythreshold', 'core_enrol'), $options);
687 $mform->addHelpButton('expirythreshold', 'expirythreshold', 'core_enrol');
688 $mform->disabledIf('expirythreshold', 'expirynotify', 'eq', 0);
690 if (enrol_accessing_via_instance($instance)) {
691 $warntext = get_string('instanceeditselfwarningtext', 'core_enrol');
692 $mform->addElement('static', 'selfwarn', get_string('instanceeditselfwarning', 'core_enrol'), $warntext);
697 * Perform custom validation of the data used to edit the instance.
699 * @param array $data array of ("fieldname"=>value) of submitted data
700 * @param array $files array of uploaded files "element_name"=>tmp_file_path
701 * @param object $instance The instance loaded from the DB
702 * @param context $context The context of the instance we are editing
703 * @return array of "element_name"=>"error_description" if there are errors,
704 * or an empty array if everything is OK.
707 public function edit_instance_validation($data, $files, $instance, $context) {
710 if ($data['expirynotify'] > 0 and $data['expirythreshold'] < 86400) {
711 $errors['expirythreshold'] = get_string('errorthresholdlow', 'core_enrol');
714 $validstatus = array_keys($this->get_status_options());
715 $validroles = array_keys($this->get_roleid_options($instance, $context));
716 $validexpirynotify = array_keys($this->get_expirynotify_options());
719 'status' => $validstatus,
720 'roleid' => $validroles,
721 'enrolperiod' => PARAM_INT,
722 'expirynotify' => $validexpirynotify,
723 'expirythreshold' => PARAM_INT
726 $typeerrors = $this->validate_param_types($data, $tovalidate);
727 $errors = array_merge($errors, $typeerrors);