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757 lines
26 KiB
PHP
757 lines
26 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* This file contains the course_enrolment_manager class which is used to interface
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* with the functions that exist in enrollib.php in relation to a single course.
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*
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* @package moodlecore
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* @copyright 2010 Sam Hemelryk
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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/**
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* This class provides a targeted tied together means of interfacing the enrolment
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* tasks together with a course.
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*
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* It is provided as a convenience more than anything else.
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*
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* @copyright 2010 Sam Hemelryk
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class course_enrolment_manager {
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/**
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* The course context
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* @var stdClass
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*/
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protected $context;
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/**
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* The course we are managing enrolments for
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* @var stdClass
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*/
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protected $course = null;
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/**
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* Limits the focus of the manager to one enrolment plugin instance
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* @var string
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*/
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protected $instancefilter = null;
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/**
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* The total number of users enrolled in the course
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* Populated by course_enrolment_manager::get_total_users
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* @var int
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*/
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protected $totalusers = null;
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/**
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* An array of users currently enrolled in the course
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* Populated by course_enrolment_manager::get_users
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* @var array
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*/
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protected $users = array();
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/**#@+
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* These variables are used to cache the information this class uses
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* please never use these directly instead use thier get_ counterparts.
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* @access private
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* @var array
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*/
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private $_instancessql = null;
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private $_instances = null;
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private $_inames = null;
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private $_plugins = null;
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private $_roles = null;
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private $_assignableroles = null;
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private $_groups = null;
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/**#@-*/
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/**
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* Constructs the course enrolment manager
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*
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* @param stdClass $course
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* @param string $instancefilter
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*/
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public function __construct($course, $instancefilter = null) {
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$this->context = get_context_instance(CONTEXT_COURSE, $course->id);
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$this->course = $course;
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$this->instancefilter = $instancefilter;
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}
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/**
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* Returns the total number of enrolled users in the course.
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*
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* If a filter was specificed this will be the total number of users enrolled
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* in this course by means of that instance.
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*
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* @global moodle_database $DB
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* @return int
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*/
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public function get_total_users() {
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global $DB;
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if ($this->totalusers === null) {
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list($instancessql, $params, $filter) = $this->get_instance_sql();
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$sqltotal = "SELECT COUNT(DISTINCT u.id)
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FROM {user} u
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JOIN {user_enrolments} ue ON (ue.userid = u.id AND ue.enrolid $instancessql)
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JOIN {enrol} e ON (e.id = ue.enrolid)";
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$this->totalusers = (int)$DB->count_records_sql($sqltotal, $params);
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}
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return $this->totalusers;
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}
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/**
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* Gets all of the users enrolled in this course.
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*
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* If a filter was specificed this will be the users who were enrolled
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* in this course by means of that instance.
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*
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* @global moodle_database $DB
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* @param string $sort
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* @param string $direction ASC or DESC
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* @param int $page First page should be 0
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* @param int $perpage Defaults to 25
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* @return array
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*/
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public function get_users($sort, $direction='ASC', $page=0, $perpage=25) {
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global $DB;
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if ($direction !== 'ASC') {
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$direction = 'DESC';
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}
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$key = md5("$sort-$direction-$page-$perpage");
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if (!array_key_exists($key, $this->users)) {
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list($instancessql, $params, $filter) = $this->get_instance_sql();
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$sql = "SELECT DISTINCT u.*, ul.timeaccess AS lastseen
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FROM {user} u
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JOIN {user_enrolments} ue ON (ue.userid = u.id AND ue.enrolid $instancessql)
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JOIN {enrol} e ON (e.id = ue.enrolid)
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LEFT JOIN {user_lastaccess} ul ON (ul.courseid = e.courseid AND ul.userid = u.id)";
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if ($sort === 'firstname') {
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$sql .= " ORDER BY u.firstname $direction, u.lastname $direction";
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} else if ($sort === 'lastname') {
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$sql .= " ORDER BY u.lastname $direction, u.firstname $direction";
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} else if ($sort === 'email') {
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$sql .= " ORDER BY u.email $direction, u.lastname $direction, u.firstname $direction";
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} else if ($sort === 'lastseen') {
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$sql .= " ORDER BY ul.timeaccess $direction, u.lastname $direction, u.firstname $direction";
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}
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$this->users[$key] = $DB->get_records_sql($sql, $params, $page*$perpage, $perpage);
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}
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return $this->users[$key];
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}
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/**
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* Gets an array of the users that can be enrolled in this course.
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*
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* @global moodle_database $DB
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* @param int $enrolid
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* @param string $search
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* @param bool $searchanywhere
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* @param int $page Defaults to 0
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* @param int $perpage Defaults to 25
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* @return array Array(totalusers => int, users => array)
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*/
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public function get_potential_users($enrolid, $search='', $searchanywhere=false, $page=0, $perpage=25) {
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global $DB;
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// Add some additional sensible conditions
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$tests = array("u.username <> 'guest'", 'u.deleted = 0', 'u.confirmed = 1');
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$params = array();
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if (!empty($search)) {
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$conditions = array('u.firstname','u.lastname');
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$ilike = ' ' . $DB->sql_ilike();
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if ($searchanywhere) {
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$searchparam = '%' . $search . '%';
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} else {
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$searchparam = $search . '%';
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}
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$i = 0;
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foreach ($conditions as &$condition) {
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$condition .= "$ilike :con{$i}00";
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$params["con{$i}00"] = $searchparam;
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$i++;
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}
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$tests[] = '(' . implode(' OR ', $conditions) . ')';
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}
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$wherecondition = implode(' AND ', $tests);
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$ufields = user_picture::fields('u');
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$fields = 'SELECT u.id, u.firstname, u.lastname, u.username, u.email, u.lastaccess, u.picture, u.imagealt, '.$ufields;
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$countfields = 'SELECT COUNT(1)';
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$sql = " FROM {user} u
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WHERE $wherecondition
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AND u.id NOT IN (SELECT ue.userid
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FROM {user_enrolments} ue
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JOIN {enrol} e ON (e.id = ue.enrolid AND e.id = :enrolid))";
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$order = ' ORDER BY u.lastname ASC, u.firstname ASC';
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$params['enrolid'] = $enrolid;
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$totalusers = $DB->count_records_sql($countfields . $sql, $params);
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$availableusers = $DB->get_records_sql($fields . $sql . $order, $params, $page*$perpage, $perpage);
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return array('totalusers'=>$totalusers, 'users'=>$availableusers);
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}
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/**
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* Gets an array containing some SQL to user for when selecting, params for
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* that SQL, and the filter that was used in constructing the sql.
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*
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* @global moodle_database $DB
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* @return string
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*/
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protected function get_instance_sql() {
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global $DB;
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if ($this->_instancessql === null) {
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$instances = $this->get_enrolment_instances();
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$filter = $this->get_enrolment_filter();
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if ($filter && array_key_exists($filter, $instances)) {
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$sql = " = :ifilter";
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$params = array('ifilter'=>$filter);
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} else {
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$filter = 0;
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if ($instances) {
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list($sql, $params) = $DB->get_in_or_equal(array_keys($this->get_enrolment_instances()), SQL_PARAMS_NAMED);
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} else {
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// no enabled instances, oops, we should probably say something
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$sql = "= :never";
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$params = array('never'=>-1);
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}
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}
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$this->instancefilter = $filter;
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$this->_instancessql = array($sql, $params, $filter);
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}
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return $this->_instancessql;
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}
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/**
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* Returns all of the enrolment instances for this course.
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*
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* @return array
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*/
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public function get_enrolment_instances() {
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if ($this->_instances === null) {
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$this->_instances = enrol_get_instances($this->course->id, true);
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}
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return $this->_instances;
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}
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/**
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* Returns the names for all of the enrolment instances for this course.
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*
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* @return array
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*/
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public function get_enrolment_instance_names() {
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if ($this->_inames === null) {
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$instances = $this->get_enrolment_instances();
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$plugins = $this->get_enrolment_plugins();
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foreach ($instances as $key=>$instance) {
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if (!isset($plugins[$instance->enrol])) {
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// weird, some broken stuff in plugin
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unset($instances[$key]);
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continue;
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}
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$this->_inames[$key] = $plugins[$instance->enrol]->get_instance_name($instance);
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}
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}
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return $this->_inames;
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}
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/**
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* Gets all of the enrolment plugins that are active for this course.
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*
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* @return array
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*/
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public function get_enrolment_plugins() {
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if ($this->_plugins === null) {
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$this->_plugins = enrol_get_plugins(true);
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}
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return $this->_plugins;
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}
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/**
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* Gets all of the roles this course can contain.
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*
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* @return array
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*/
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public function get_all_roles() {
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if ($this->_roles === null) {
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$this->_roles = role_fix_names(get_all_roles(), $this->context);
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}
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return $this->_roles;
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}
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/**
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* Gets all of the assignable roles for this course.
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*
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* @return array
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*/
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public function get_assignable_roles() {
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if ($this->_assignableroles === null) {
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$this->_assignableroles = get_assignable_roles($this->context, ROLENAME_ALIAS, false); // verifies unassign access control too
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}
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return $this->_assignableroles;
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}
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/**
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* Gets all of the groups for this course.
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*
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* @return array
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*/
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public function get_all_groups() {
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if ($this->_groups === null) {
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$this->_groups = groups_get_all_groups($this->course->id);
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foreach ($this->_groups as $gid=>$group) {
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$this->_groups[$gid]->name = format_string($group->name);
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}
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}
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return $this->_groups;
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}
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/**
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* Unenroles a user from the course given the users ue entry
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*
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* @global moodle_database $DB
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* @param stdClass $ue
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* @return bool
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*/
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public function unenrol_user($ue) {
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global $DB;
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list ($instance, $plugin) = $this->get_user_enrolment_components($ue);
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if ($instance && $plugin && $plugin->allow_unenrol($instance) && has_capability("enrol/$instance->enrol:unenrol", $this->context)) {
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$plugin->unenrol_user($instance, $ue->userid);
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return true;
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}
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return false;
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}
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/**
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* Given a user enrolment record this method returns the plugin and enrolment
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* instance that relate to it.
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*
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* @param stdClass|int $userenrolment
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* @return array array($instance, $plugin)
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*/
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public function get_user_enrolment_components($userenrolment) {
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global $DB;
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if (!is_numeric($userenrolment)) {
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$userenrolment = $DB->get_record('user_enrolments', array('id'=>(int)$userenrolment));
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}
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$instances = $this->get_enrolment_instances();
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$plugins = $this->get_enrolment_plugins();
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if (!$userenrolment || !isset($instances[$userenrolment->enrolid])) {
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return array(false, false);
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}
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$instance = $instances[$userenrolment->enrolid];
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$plugin = $plugins[$instance->enrol];
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return array($instance, $plugin);
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}
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/**
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* Removes an assigned role from a user.
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*
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* @global moodle_database $DB
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* @param int $userid
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* @param int $roleid
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* @return bool
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*/
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public function unassign_role_from_user($userid, $roleid) {
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global $DB;
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require_capability('moodle/role:assign', $this->context);
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$user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
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try {
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role_unassign($roleid, $user->id, $this->context->id, '', NULL);
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} catch (Exception $e) {
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return false;
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}
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return true;
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}
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/**
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* Assigns a role to a user.
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*
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* @param int $roleid
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* @param int $userid
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* @return int|false
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*/
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public function assign_role_to_user($roleid, $userid) {
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require_capability('moodle/role:assign', $this->context);
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return role_assign($roleid, $userid, $this->context->id, '', NULL);
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}
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/**
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* Adds a user to a group
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*
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* @param stdClass $user
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* @param int $groupid
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* @return bool
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*/
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public function add_user_to_group($user, $groupid) {
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require_capability('moodle/course:managegroups', $this->context);
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$group = $this->get_group($groupid);
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if (!$group) {
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return false;
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}
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return groups_add_member($group->id, $user->id);
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}
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/**
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* Removes a user from a group
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*
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* @global moodle_database $DB
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* @param StdClass $user
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* @param int $groupid
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* @return bool
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*/
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public function remove_user_from_group($user, $groupid) {
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global $DB;
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require_capability('moodle/course:managegroups', $this->context);
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$group = $this->get_group($groupid);
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if (!$group) {
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return false;
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}
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return groups_remove_member($group, $user);
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}
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/**
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* Gets the requested group
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*
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* @param int $groupid
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* @return stdClass|int
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*/
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public function get_group($groupid) {
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$groups = $this->get_all_groups();
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if (!array_key_exists($groupid, $groups)) {
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return false;
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}
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return $groups[$groupid];
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}
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/**
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* Edits an enrolment
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*
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* @param stdClass $userenrolment
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* @param stdClass $data
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* @return bool
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*/
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public function edit_enrolment($userenrolment, $data) {
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list($instance, $plugin) = $this->get_user_enrolment_components($ue);
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if ($instance && $plugin && $plugin->allow_manage($instance) && has_capability("enrol/$instance->enrol:manage", $this->context)) {
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if (!isset($data->status)) {
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$data->status = $userenrolment->status;
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}
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$plugin->update_user_enrol($instance, $userenrolment->userid, $data->status, $data->timestart, $data->timeend);
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return true;
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}
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return false;
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}
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/**
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* Returns the current enrolment filter that is being applied by this class
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* @return string
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*/
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public function get_enrolment_filter() {
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return $this->instancefilter;
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}
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/**
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* Gets the roles assigned to this user that are applicable for this course.
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*
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* @param int $userid
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* @return array
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*/
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public function get_user_roles($userid) {
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$roles = array();
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$ras = get_user_roles($this->context, $userid, true, 'c.contextlevel DESC, r.sortorder ASC');
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foreach ($ras as $ra) {
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if ($ra->contextid != $this->context->id) {
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if (!array_key_exists($ra->roleid, $roles)) {
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$roles[$ra->roleid] = null;
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}
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// higher ras, course always takes precedence
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continue;
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}
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if (array_key_exists($ra->roleid, $roles) && $roles[$ra->roleid] === false) {
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continue;
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}
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$roles[$ra->roleid] = ($ra->itemid == 0 and $ra->component === '');
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}
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return $roles;
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}
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/**
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* Gets the enrolments this user has in the course
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*
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* @global moodle_database $DB
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* @param int $userid
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* @return array
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*/
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public function get_user_enrolments($userid) {
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global $DB;
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list($instancessql, $params, $filter) = $this->get_instance_sql();
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$params['userid'] = $userid;
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$userenrolments = $DB->get_records_select('user_enrolments', "enrolid $instancessql AND userid = :userid", $params);
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$instances = $this->get_enrolment_instances();
|
|
$plugins = $this->get_enrolment_plugins();
|
|
$inames = $this->get_enrolment_instance_names();
|
|
foreach ($userenrolments as &$ue) {
|
|
$ue->enrolmentinstance = $instances[$ue->enrolid];
|
|
$ue->enrolmentplugin = $plugins[$ue->enrolmentinstance->enrol];
|
|
$ue->enrolmentinstancename = $inames[$ue->enrolmentinstance->id];
|
|
}
|
|
return $userenrolments;
|
|
}
|
|
|
|
/**
|
|
* Gets the groups this user belongs to
|
|
*
|
|
* @param int $userid
|
|
* @return array
|
|
*/
|
|
public function get_user_groups($userid) {
|
|
return groups_get_all_groups($this->course->id, $userid, 0, 'g.id');
|
|
}
|
|
|
|
/**
|
|
* Retursn an array of params that would go into the URL to return to this
|
|
* exact page.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function get_url_params() {
|
|
$args = array(
|
|
'id' => $this->course->id
|
|
);
|
|
if (!empty($this->instancefilter)) {
|
|
$args['ifilter'] = $this->instancefilter;
|
|
}
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Returns the course this object is managing enrolments for
|
|
*
|
|
* @return stdClass
|
|
*/
|
|
public function get_course() {
|
|
return $this->course;
|
|
}
|
|
|
|
/**
|
|
* Returns the course context
|
|
*
|
|
* @return stdClass
|
|
*/
|
|
public function get_context() {
|
|
return $this->context;
|
|
}
|
|
|
|
/**
|
|
* Gets all the cohorts the user is able to view.
|
|
*
|
|
* @global moodle_database $DB
|
|
* @return array
|
|
*/
|
|
public function get_cohorts() {
|
|
global $DB;
|
|
$context = $this->get_context();
|
|
$cohorts = array();
|
|
$instances = $this->get_enrolment_instances();
|
|
$enrolled = array();
|
|
foreach ($instances as $instance) {
|
|
if ($instance->enrol == 'cohort') {
|
|
$enrolled[] = $instance->customint1;
|
|
}
|
|
}
|
|
list($sqlparents, $params) = $DB->get_in_or_equal(get_parent_contexts($context));
|
|
$sql = "SELECT id, name, contextid
|
|
FROM {cohort}
|
|
WHERE contextid $sqlparents
|
|
ORDER BY name ASC";
|
|
$rs = $DB->get_recordset_sql($sql, $params);
|
|
foreach ($rs as $c) {
|
|
$context = get_context_instance_by_id($c->contextid);
|
|
if (!has_capability('moodle/cohort:view', $context)) {
|
|
continue;
|
|
}
|
|
$cohorts[$c->id] = array(
|
|
'cohortid'=>$c->id,
|
|
'name'=>format_string($c->name),
|
|
'users'=>$DB->count_records('cohort_members', array('cohortid'=>$c->id)),
|
|
'enrolled'=>in_array($c->id, $enrolled)
|
|
);
|
|
}
|
|
$rs->close();
|
|
return $cohorts;
|
|
}
|
|
|
|
/**
|
|
* Enrols a cohort in a course.
|
|
*
|
|
* Essentially this just adds a cohort enrolment plugin instance to the course
|
|
*
|
|
* @param int $cohortid
|
|
* @param int $roleid
|
|
* @return bool
|
|
*/
|
|
public function enrol_cohort($cohortid, $roleid) {
|
|
global $CFG;
|
|
require_capability('moodle/course:enrolconfig', $this->get_context());
|
|
require_once($CFG->dirroot.'/enrol/cohort/locallib.php');
|
|
$roles = $this->get_assignable_roles();
|
|
$cohorts = $this->get_cohorts();
|
|
if (!array_key_exists($cohortid, $cohorts) || !array_key_exists($roleid, $roles)) {
|
|
return false;
|
|
}
|
|
$enrol = enrol_get_plugin('cohort');
|
|
$enrol->add_instance($this->course, array('customint1'=>$cohortid, 'roleid'=>$roleid));
|
|
enrol_cohort_sync($this->course->id);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Enrols all of the users in a cohort within this course.
|
|
*
|
|
* Note this is VERY different from creating an enrolment instance for a cohort.
|
|
*
|
|
* @global moodle_database $DB
|
|
* @param int $cohortid
|
|
* @param int $roleid
|
|
* @return bool
|
|
*/
|
|
public function enrol_cohort_users($cohortid, $roleid) {
|
|
global $DB;
|
|
require_capability('moodle/course:enrolconfig', $this->get_context());
|
|
$instance = false;
|
|
$instances = $this->get_enrolment_instances();
|
|
foreach ($instances as $i) {
|
|
if ($i->enrol == 'manual') {
|
|
$instance = $i;
|
|
break;
|
|
}
|
|
}
|
|
$plugin = enrol_get_plugin('manual');
|
|
if (!$instance || !$plugin || !$plugin->allow_enrol($instance) || !has_capability('enrol/'.$plugin->get_name().':enrol', $this->get_context())) {
|
|
return false;
|
|
}
|
|
$sql = "SELECT com.userid
|
|
FROM {cohort_members} com
|
|
LEFT JOIN (
|
|
SELECT *
|
|
FROM {user_enrolments} ue
|
|
WHERE ue.enrolid = :enrolid
|
|
) ue ON ue.userid=com.userid
|
|
WHERE com.cohortid = :cohortid AND ue.id IS NULL";
|
|
$params = array('cohortid'=>$cohortid, 'enrolid'=>$instance->id);
|
|
$rs = $DB->get_recordset_sql($sql, $params);
|
|
$count = 0;
|
|
foreach ($rs as $user) {
|
|
$count++;
|
|
$plugin->enrol_user($instance, $user->userid, $roleid);
|
|
}
|
|
$rs->close();
|
|
return $count;
|
|
}
|
|
|
|
/**
|
|
* Gets an array of users for display, this includes minimal user information
|
|
* as well as minimal information on the users roles, groups, and enrolments.
|
|
*
|
|
* @param core_enrol_renderer $renderer
|
|
* @param moodle_url $pageurl
|
|
* @param int $sort
|
|
* @param string $direction ASC or DESC
|
|
* @param int $page
|
|
* @param int $perpage
|
|
* @return array
|
|
*/
|
|
public function get_users_for_display(core_enrol_renderer $renderer, moodle_url $pageurl, $sort, $direction, $page, $perpage) {
|
|
$users = $this->get_users($sort, $direction, $page, $perpage);
|
|
|
|
$now = time();
|
|
$strnever = get_string('never');
|
|
$straddgroup = get_string('addgroup', 'group');
|
|
$strunenrol = get_string('unenrol', 'enrol');
|
|
$stredit = get_string('edit');
|
|
|
|
$iconedit = $renderer->pix_url('t/edit');
|
|
$iconenroladd = $renderer->pix_url('t/enroladd');
|
|
$iconenrolremove = $renderer->pix_url('t/delete');
|
|
|
|
$allroles = $this->get_all_roles();
|
|
$assignable = $this->get_assignable_roles();
|
|
$allgroups = $this->get_all_groups();
|
|
$courseid = $this->get_course()->id;
|
|
$context = $this->get_context();
|
|
$canmanagegroups = has_capability('moodle/course:managegroups', $context);
|
|
|
|
$url = new moodle_url($pageurl, $this->get_url_params());
|
|
|
|
$userdetails = array();
|
|
foreach ($users as $user) {
|
|
$details = array(
|
|
'userid' => $user->id,
|
|
'courseid' => $courseid,
|
|
'picture' => new user_picture($user),
|
|
'firstname' => fullname($user, true),
|
|
'email' => $user->email,
|
|
'lastseen' => $strnever,
|
|
'roles' => array(),
|
|
'groups' => array(),
|
|
'enrolments' => array()
|
|
);
|
|
|
|
if ($user->lastseen) {
|
|
$details['lastseen'] = format_time($user->lastaccess);
|
|
}
|
|
|
|
// Roles
|
|
foreach ($this->get_user_roles($user->id) as $rid=>$rassignable) {
|
|
$details['roles'][$rid] = array('text'=>$allroles[$rid]->localname, 'unchangeable'=>(!$rassignable || !isset($assignable[$rid])));
|
|
}
|
|
|
|
// Users
|
|
$usergroups = $this->get_user_groups($user->id);
|
|
foreach($usergroups as $gid=>$unused) {
|
|
$details['groups'][$gid] = $allgroups[$gid]->name;
|
|
}
|
|
|
|
// Enrolments
|
|
foreach ($this->get_user_enrolments($user->id) as $ue) {
|
|
if ($ue->timestart and $ue->timeend) {
|
|
$period = get_string('periodstartend', 'enrol', array('start'=>userdate($ue->timestart), 'end'=>userdate($ue->timeend)));
|
|
$periodoutside = ($ue->timestart && $ue->timeend && $now < $ue->timestart && $now > $ue->timeend);
|
|
} else if ($ue->timestart) {
|
|
$period = get_string('periodstart', 'enrol', userdate($ue->timestart));
|
|
$periodoutside = ($ue->timestart && $now < $ue->timestart);
|
|
} else if ($ue->timeend) {
|
|
$period = get_string('periodend', 'enrol', userdate($ue->timeend));
|
|
$periodoutside = ($ue->timeend && $now > $ue->timeend);
|
|
} else {
|
|
$period = '';
|
|
$periodoutside = false;
|
|
}
|
|
$details['enrolments'][$ue->id] = array(
|
|
'text' => $ue->enrolmentinstancename,
|
|
'period' => $period,
|
|
'dimmed' => ($periodoutside || $ue->status != ENROL_USER_ACTIVE),
|
|
'canunenrol' => ($ue->enrolmentplugin->allow_unenrol($ue->enrolmentinstance) && has_capability("enrol/".$ue->enrolmentinstance->enrol.":unenrol", $context)),
|
|
'canmanage' => ($ue->enrolmentplugin->allow_manage($ue->enrolmentinstance) && has_capability("enrol/".$ue->enrolmentinstance->enrol.":manage", $context))
|
|
);
|
|
}
|
|
$userdetails[$user->id] = $details;
|
|
}
|
|
return $userdetails;
|
|
}
|
|
} |