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locallib.php
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locallib.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/>.
/**
* This file contains the course_enrolment_manager class which is used to interface
* with the functions that exist in enrollib.php in relation to a single course.
*
* @package core
* @subpackage enrol
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* This class provides a targeted tied together means of interfacing the enrolment
* tasks together with a course.
*
* It is provided as a convenience more than anything else.
*
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class course_enrolment_manager {
/**
* The course context
* @var stdClass
*/
protected $context;
/**
* The course we are managing enrolments for
* @var stdClass
*/
protected $course = null;
/**
* Limits the focus of the manager to one enrolment plugin instance
* @var string
*/
protected $instancefilter = null;
/**
* The total number of users enrolled in the course
* Populated by course_enrolment_manager::get_total_users
* @var int
*/
protected $totalusers = null;
/**
* An array of users currently enrolled in the course
* Populated by course_enrolment_manager::get_users
* @var array
*/
protected $users = array();
/**
* An array of users who have roles within this course but who have not
* been enrolled in the course
* @var array
*/
protected $otherusers = array();
/**
* The total number of users who hold a role within the course but who
* arn't enrolled.
* @var int
*/
protected $totalotherusers = null;
/**
* The current moodle_page object
* @var moodle_page
*/
protected $moodlepage = null;
/**#@+
* These variables are used to cache the information this class uses
* please never use these directly instead use their get_ counterparts.
* @access private
* @var array
*/
private $_instancessql = null;
private $_instances = null;
private $_inames = null;
private $_plugins = null;
private $_allplugins = null;
private $_roles = null;
private $_assignableroles = null;
private $_assignablerolesothers = null;
private $_groups = null;
/**#@-*/
/**
* Constructs the course enrolment manager
*
* @param moodle_page $moodlepage
* @param stdClass $course
* @param string $instancefilter
*/
public function __construct(moodle_page $moodlepage, $course, $instancefilter = null) {
$this->moodlepage = $moodlepage;
$this->context = context_course::instance($course->id);
$this->course = $course;
$this->instancefilter = $instancefilter;
}
/**
* Returns the current moodle page
* @return moodle_page
*/
public function get_moodlepage() {
return $this->moodlepage;
}
/**
* Returns the total number of enrolled users in the course.
*
* If a filter was specificed this will be the total number of users enrolled
* in this course by means of that instance.
*
* @global moodle_database $DB
* @return int
*/
public function get_total_users() {
global $DB;
if ($this->totalusers === null) {
list($instancessql, $params, $filter) = $this->get_instance_sql();
$sqltotal = "SELECT COUNT(DISTINCT u.id)
FROM {user} u
JOIN {user_enrolments} ue ON (ue.userid = u.id AND ue.enrolid $instancessql)
JOIN {enrol} e ON (e.id = ue.enrolid)";
$this->totalusers = (int)$DB->count_records_sql($sqltotal, $params);
}
return $this->totalusers;
}
/**
* Returns the total number of enrolled users in the course.
*
* If a filter was specificed this will be the total number of users enrolled
* in this course by means of that instance.
*
* @global moodle_database $DB
* @return int
*/
public function get_total_other_users() {
global $DB;
if ($this->totalotherusers === null) {
list($ctxcondition, $params) = $DB->get_in_or_equal(get_parent_contexts($this->context, true), SQL_PARAMS_NAMED, 'ctx');
$params['courseid'] = $this->course->id;
$sql = "SELECT COUNT(DISTINCT u.id)
FROM {role_assignments} ra
JOIN {user} u ON u.id = ra.userid
JOIN {context} ctx ON ra.contextid = ctx.id
LEFT JOIN (
SELECT ue.id, ue.userid
FROM {user_enrolments} ue
LEFT JOIN {enrol} e ON e.id=ue.enrolid
WHERE e.courseid = :courseid
) ue ON ue.userid=u.id
WHERE ctx.id $ctxcondition AND
ue.id IS NULL";
$this->totalotherusers = (int)$DB->count_records_sql($sql, $params);
}
return $this->totalotherusers;
}
/**
* Gets all of the users enrolled in this course.
*
* If a filter was specified this will be the users who were enrolled
* in this course by means of that instance.
*
* @global moodle_database $DB
* @param string $sort
* @param string $direction ASC or DESC
* @param int $page First page should be 0
* @param int $perpage Defaults to 25
* @return array
*/
public function get_users($sort, $direction='ASC', $page=0, $perpage=25) {
global $DB;
if ($direction !== 'ASC') {
$direction = 'DESC';
}
$key = md5("$sort-$direction-$page-$perpage");
if (!array_key_exists($key, $this->users)) {
list($instancessql, $params, $filter) = $this->get_instance_sql();
$extrafields = get_extra_user_fields($this->get_context());
$extrafields[] = 'lastaccess';
$ufields = user_picture::fields('u', $extrafields);
$sql = "SELECT DISTINCT $ufields, ul.timeaccess AS lastseen
FROM {user} u
JOIN {user_enrolments} ue ON (ue.userid = u.id AND ue.enrolid $instancessql)
JOIN {enrol} e ON (e.id = ue.enrolid)
LEFT JOIN {user_lastaccess} ul ON (ul.courseid = e.courseid AND ul.userid = u.id)";
if ($sort === 'firstname') {
$sql .= " ORDER BY u.firstname $direction, u.lastname $direction";
} else if ($sort === 'lastname') {
$sql .= " ORDER BY u.lastname $direction, u.firstname $direction";
} else if ($sort === 'email') {
$sql .= " ORDER BY u.email $direction, u.lastname $direction, u.firstname $direction";
} else if ($sort === 'lastseen') {
$sql .= " ORDER BY ul.timeaccess $direction, u.lastname $direction, u.firstname $direction";
}
$this->users[$key] = $DB->get_records_sql($sql, $params, $page*$perpage, $perpage);
}
return $this->users[$key];
}
/**
* Gets and array of other users.
*
* Other users are users who have been assigned roles or inherited roles
* within this course but who have not been enrolled in the course
*
* @global moodle_database $DB
* @param string $sort
* @param string $direction
* @param int $page
* @param int $perpage
* @return array
*/
public function get_other_users($sort, $direction='ASC', $page=0, $perpage=25) {
global $DB;
if ($direction !== 'ASC') {
$direction = 'DESC';
}
$key = md5("$sort-$direction-$page-$perpage");
if (!array_key_exists($key, $this->otherusers)) {
list($ctxcondition, $params) = $DB->get_in_or_equal(get_parent_contexts($this->context, true), SQL_PARAMS_NAMED, 'ctx');
$params['courseid'] = $this->course->id;
$params['cid'] = $this->course->id;
$sql = "SELECT ra.id as raid, ra.contextid, ra.component, ctx.contextlevel, ra.roleid, u.*, ue.lastseen
FROM {role_assignments} ra
JOIN {user} u ON u.id = ra.userid
JOIN {context} ctx ON ra.contextid = ctx.id
LEFT JOIN (
SELECT ue.id, ue.userid, ul.timeaccess AS lastseen
FROM {user_enrolments} ue
LEFT JOIN {enrol} e ON e.id=ue.enrolid
LEFT JOIN {user_lastaccess} ul ON (ul.courseid = e.courseid AND ul.userid = ue.userid)
WHERE e.courseid = :courseid
) ue ON ue.userid=u.id
WHERE ctx.id $ctxcondition AND
ue.id IS NULL
ORDER BY u.$sort $direction, ctx.depth DESC";
$this->otherusers[$key] = $DB->get_records_sql($sql, $params, $page*$perpage, $perpage);
}
return $this->otherusers[$key];
}
/**
* Helper method used by {@link get_potential_users()} and {@link search_other_users()}.
*
* @param string $search the search term, if any.
* @param bool $searchanywhere Can the search term be anywhere, or must it be at the start.
* @return array with three elements:
* string list of fields to SELECT,
* string contents of SQL WHERE clause,
* array query params. Note that the SQL snippets use named parameters.
*/
protected function get_basic_search_conditions($search, $searchanywhere) {
global $DB, $CFG;
// Add some additional sensible conditions
$tests = array("u.id <> :guestid", 'u.deleted = 0', 'u.confirmed = 1');
$params = array('guestid' => $CFG->siteguest);
if (!empty($search)) {
$conditions = get_extra_user_fields($this->get_context());
$conditions[] = 'u.firstname';
$conditions[] = 'u.lastname';
$conditions[] = $DB->sql_fullname('u.firstname', 'u.lastname');
if ($searchanywhere) {
$searchparam = '%' . $search . '%';
} else {
$searchparam = $search . '%';
}
$i = 0;
foreach ($conditions as $key => $condition) {
$conditions[$key] = $DB->sql_like($condition, ":con{$i}00", false);
$params["con{$i}00"] = $searchparam;
$i++;
}
$tests[] = '(' . implode(' OR ', $conditions) . ')';
}
$wherecondition = implode(' AND ', $tests);
$extrafields = get_extra_user_fields($this->get_context(), array('username', 'lastaccess'));
$extrafields[] = 'username';
$extrafields[] = 'lastaccess';
$ufields = user_picture::fields('u', $extrafields);
return array($ufields, $params, $wherecondition);
}
/**
* Helper method used by {@link get_potential_users()} and {@link search_other_users()}.
*
* @param string $search the search string, if any.
* @param string $fields the first bit of the SQL when returning some users.
* @param string $countfields fhe first bit of the SQL when counting the users.
* @param string $sql the bulk of the SQL statement.
* @param array $params query parameters.
* @param int $page which page number of the results to show.
* @param int $perpage number of users per page.
* @return array with two elememts:
* int total number of users matching the search.
* array of user objects returned by the query.
*/
protected function execute_search_queries($search, $fields, $countfields, $sql, array $params, $page, $perpage) {
global $DB, $CFG;
list($sort, $sortparams) = users_order_by_sql('u', $search, $this->get_context());
$order = ' ORDER BY ' . $sort;
$totalusers = $DB->count_records_sql($countfields . $sql, $params);
$availableusers = $DB->get_records_sql($fields . $sql . $order,
array_merge($params, $sortparams), $page*$perpage, $perpage);
return array('totalusers' => $totalusers, 'users' => $availableusers);
}
/**
* Gets an array of the users that can be enrolled in this course.
*
* @global moodle_database $DB
* @param int $enrolid
* @param string $search
* @param bool $searchanywhere
* @param int $page Defaults to 0
* @param int $perpage Defaults to 25
* @return array Array(totalusers => int, users => array)
*/
public function get_potential_users($enrolid, $search='', $searchanywhere=false, $page=0, $perpage=25) {
global $DB;
list($ufields, $params, $wherecondition) = $this->get_basic_search_conditions($search, $searchanywhere);
$fields = 'SELECT '.$ufields;
$countfields = 'SELECT COUNT(1)';
$sql = " FROM {user} u
LEFT JOIN {user_enrolments} ue ON (ue.userid = u.id AND ue.enrolid = :enrolid)
WHERE $wherecondition
AND ue.id IS NULL";
$params['enrolid'] = $enrolid;
return $this->execute_search_queries($search, $fields, $countfields, $sql, $params, $page, $perpage);
}
/**
* Searches other users and returns paginated results
*
* @global moodle_database $DB
* @param string $search
* @param bool $searchanywhere
* @param int $page Starting at 0
* @param int $perpage
* @return array
*/
public function search_other_users($search='', $searchanywhere=false, $page=0, $perpage=25) {
global $DB, $CFG;
list($ufields, $params, $wherecondition) = $this->get_basic_search_conditions($search, $searchanywhere);
$fields = 'SELECT ' . $ufields;
$countfields = 'SELECT COUNT(u.id)';
$sql = " FROM {user} u
LEFT JOIN {role_assignments} ra ON (ra.userid = u.id AND ra.contextid = :contextid)
WHERE $wherecondition
AND ra.id IS NULL";
$params['contextid'] = $this->context->id;
return $this->execute_search_queries($search, $fields, $countfields, $sql, $params, $page, $perpage);
}
/**
* Gets an array containing some SQL to user for when selecting, params for
* that SQL, and the filter that was used in constructing the sql.
*
* @global moodle_database $DB
* @return string
*/
protected function get_instance_sql() {
global $DB;
if ($this->_instancessql === null) {
$instances = $this->get_enrolment_instances();
$filter = $this->get_enrolment_filter();
if ($filter && array_key_exists($filter, $instances)) {
$sql = " = :ifilter";
$params = array('ifilter'=>$filter);
} else {
$filter = 0;
if ($instances) {
list($sql, $params) = $DB->get_in_or_equal(array_keys($this->get_enrolment_instances()), SQL_PARAMS_NAMED);
} else {
// no enabled instances, oops, we should probably say something
$sql = "= :never";
$params = array('never'=>-1);
}
}
$this->instancefilter = $filter;
$this->_instancessql = array($sql, $params, $filter);
}
return $this->_instancessql;
}
/**
* Returns all of the enrolment instances for this course.
*
* NOTE: since 2.4 it includes instances of disabled plugins too.
*
* @return array
*/
public function get_enrolment_instances() {
if ($this->_instances === null) {
$this->_instances = enrol_get_instances($this->course->id, false);
}
return $this->_instances;
}
/**
* Returns the names for all of the enrolment instances for this course.
*
* NOTE: since 2.4 it includes instances of disabled plugins too.
*
* @return array
*/
public function get_enrolment_instance_names() {
if ($this->_inames === null) {
$instances = $this->get_enrolment_instances();
$plugins = $this->get_enrolment_plugins(false);
foreach ($instances as $key=>$instance) {
if (!isset($plugins[$instance->enrol])) {
// weird, some broken stuff in plugin
unset($instances[$key]);
continue;
}
$this->_inames[$key] = $plugins[$instance->enrol]->get_instance_name($instance);
}
}
return $this->_inames;
}
/**
* Gets all of the enrolment plugins that are active for this course.
*
* @param bool $onlyenabled return only enabled enrol plugins
* @return array
*/
public function get_enrolment_plugins($onlyenabled = true) {
if ($this->_plugins === null) {
$this->_plugins = enrol_get_plugins(true);
}
if ($onlyenabled) {
return $this->_plugins;
}
if ($this->_allplugins === null) {
// Make sure we have the same objects in _allplugins and _plugins.
$this->_allplugins = $this->_plugins;
foreach (enrol_get_plugins(false) as $name=>$plugin) {
if (!isset($this->_allplugins[$name])) {
$this->_allplugins[$name] = $plugin;
}
}
}
return $this->_allplugins;
}
/**
* Gets all of the roles this course can contain.
*
* @return array
*/
public function get_all_roles() {
if ($this->_roles === null) {
$this->_roles = role_fix_names(get_all_roles($this->context), $this->context);
}
return $this->_roles;
}
/**
* Gets all of the assignable roles for this course.
*
* @return array
*/
public function get_assignable_roles($otherusers = false) {
if ($this->_assignableroles === null) {
$this->_assignableroles = get_assignable_roles($this->context, ROLENAME_ALIAS, false); // verifies unassign access control too
}
if ($otherusers) {
if (!is_array($this->_assignablerolesothers)) {
$this->_assignablerolesothers = array();
list($courseviewroles, $ignored) = get_roles_with_cap_in_context($this->context, 'moodle/course:view');
foreach ($this->_assignableroles as $roleid=>$role) {
if (isset($courseviewroles[$roleid])) {
$this->_assignablerolesothers[$roleid] = $role;
}
}
}
return $this->_assignablerolesothers;
} else {
return $this->_assignableroles;
}
}
/**
* Gets all of the groups for this course.
*
* @return array
*/
public function get_all_groups() {
if ($this->_groups === null) {
$this->_groups = groups_get_all_groups($this->course->id);
foreach ($this->_groups as $gid=>$group) {
$this->_groups[$gid]->name = format_string($group->name);
}
}
return $this->_groups;
}
/**
* Unenrols a user from the course given the users ue entry
*
* @global moodle_database $DB
* @param stdClass $ue
* @return bool
*/
public function unenrol_user($ue) {
global $DB;
list ($instance, $plugin) = $this->get_user_enrolment_components($ue);
if ($instance && $plugin && $plugin->allow_unenrol_user($instance, $ue) && has_capability("enrol/$instance->enrol:unenrol", $this->context)) {
$plugin->unenrol_user($instance, $ue->userid);
return true;
}
return false;
}
/**
* Given a user enrolment record this method returns the plugin and enrolment
* instance that relate to it.
*
* @param stdClass|int $userenrolment
* @return array array($instance, $plugin)
*/
public function get_user_enrolment_components($userenrolment) {
global $DB;
if (is_numeric($userenrolment)) {
$userenrolment = $DB->get_record('user_enrolments', array('id'=>(int)$userenrolment));
}
$instances = $this->get_enrolment_instances();
$plugins = $this->get_enrolment_plugins(false);
if (!$userenrolment || !isset($instances[$userenrolment->enrolid])) {
return array(false, false);
}
$instance = $instances[$userenrolment->enrolid];
$plugin = $plugins[$instance->enrol];
return array($instance, $plugin);
}
/**
* Removes an assigned role from a user.
*
* @global moodle_database $DB
* @param int $userid
* @param int $roleid
* @return bool
*/
public function unassign_role_from_user($userid, $roleid) {
global $DB;
// Admins may unassign any role, others only those they could assign.
if (!is_siteadmin() and !array_key_exists($roleid, $this->get_assignable_roles())) {
if (defined('AJAX_SCRIPT')) {
throw new moodle_exception('invalidrole');
}
return false;
}
$user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
$ras = $DB->get_records('role_assignments', array('contextid'=>$this->context->id, 'userid'=>$user->id, 'roleid'=>$roleid));
foreach ($ras as $ra) {
if ($ra->component) {
if (strpos($ra->component, 'enrol_') !== 0) {
continue;
}
if (!$plugin = enrol_get_plugin(substr($ra->component, 6))) {
continue;
}
if ($plugin->roles_protected()) {
continue;
}
}
role_unassign($ra->roleid, $ra->userid, $ra->contextid, $ra->component, $ra->itemid);
}
return true;
}
/**
* Assigns a role to a user.
*
* @param int $roleid
* @param int $userid
* @return int|false
*/
public function assign_role_to_user($roleid, $userid) {
require_capability('moodle/role:assign', $this->context);
if (!array_key_exists($roleid, $this->get_assignable_roles())) {
if (defined('AJAX_SCRIPT')) {
throw new moodle_exception('invalidrole');
}
return false;
}
return role_assign($roleid, $userid, $this->context->id, '', NULL);
}
/**
* Adds a user to a group
*
* @param stdClass $user
* @param int $groupid
* @return bool
*/
public function add_user_to_group($user, $groupid) {
require_capability('moodle/course:managegroups', $this->context);
$group = $this->get_group($groupid);
if (!$group) {
return false;
}
return groups_add_member($group->id, $user->id);
}
/**
* Removes a user from a group
*
* @global moodle_database $DB
* @param StdClass $user
* @param int $groupid
* @return bool
*/
public function remove_user_from_group($user, $groupid) {
global $DB;
require_capability('moodle/course:managegroups', $this->context);
$group = $this->get_group($groupid);
if (!groups_remove_member_allowed($group, $user)) {
return false;
}
if (!$group) {
return false;
}
return groups_remove_member($group, $user);
}
/**
* Gets the requested group
*
* @param int $groupid
* @return stdClass|int
*/
public function get_group($groupid) {
$groups = $this->get_all_groups();
if (!array_key_exists($groupid, $groups)) {
return false;
}
return $groups[$groupid];
}
/**
* Edits an enrolment
*
* @param stdClass $userenrolment
* @param stdClass $data
* @return bool
*/
public function edit_enrolment($userenrolment, $data) {
//Only allow editing if the user has the appropriate capability
//Already checked in /enrol/users.php but checking again in case this function is called from elsewhere
list($instance, $plugin) = $this->get_user_enrolment_components($userenrolment);
if ($instance && $plugin && $plugin->allow_manage($instance) && has_capability("enrol/$instance->enrol:manage", $this->context)) {
if (!isset($data->status)) {
$data->status = $userenrolment->status;
}
$plugin->update_user_enrol($instance, $userenrolment->userid, $data->status, $data->timestart, $data->timeend);
return true;
}
return false;
}
/**
* Returns the current enrolment filter that is being applied by this class
* @return string
*/
public function get_enrolment_filter() {
return $this->instancefilter;
}
/**
* Gets the roles assigned to this user that are applicable for this course.
*
* @param int $userid
* @return array
*/
public function get_user_roles($userid) {
$roles = array();
$ras = get_user_roles($this->context, $userid, true, 'c.contextlevel DESC, r.sortorder ASC');
$plugins = $this->get_enrolment_plugins(false);
foreach ($ras as $ra) {
if ($ra->contextid != $this->context->id) {
if (!array_key_exists($ra->roleid, $roles)) {
$roles[$ra->roleid] = null;
}
// higher ras, course always takes precedence
continue;
}
if (array_key_exists($ra->roleid, $roles) && $roles[$ra->roleid] === false) {
continue;
}
$changeable = true;
if ($ra->component) {
$changeable = false;
if (strpos($ra->component, 'enrol_') === 0) {
$plugin = substr($ra->component, 6);
if (isset($plugins[$plugin])) {
$changeable = !$plugins[$plugin]->roles_protected();
}
}
}
$roles[$ra->roleid] = $changeable;
}
return $roles;
}
/**
* Gets the enrolments this user has in the course - including all suspended plugins and instances.
*
* @global moodle_database $DB
* @param int $userid
* @return array
*/
public function get_user_enrolments($userid) {
global $DB;
list($instancessql, $params, $filter) = $this->get_instance_sql();
$params['userid'] = $userid;
$userenrolments = $DB->get_records_select('user_enrolments', "enrolid $instancessql AND userid = :userid", $params);
$instances = $this->get_enrolment_instances();
$plugins = $this->get_enrolment_plugins(false);
$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 an array of other users in this course ready for display.
*
* Other users are users who have been assigned or inherited roles within this
* course but have not been enrolled.
*
* @param core_enrol_renderer $renderer
* @param moodle_url $pageurl
* @param string $sort
* @param string $direction ASC | DESC
* @param int $page Starting from 0
* @param int $perpage
* @return array
*/
public function get_other_users_for_display(core_enrol_renderer $renderer, moodle_url $pageurl, $sort, $direction, $page, $perpage) {
$userroles = $this->get_other_users($sort, $direction, $page, $perpage);
$roles = $this->get_all_roles();
$plugins = $this->get_enrolment_plugins(false);
$context = $this->get_context();
$now = time();
$extrafields = get_extra_user_fields($context);
$users = array();
foreach ($userroles as $userrole) {
$contextid = $userrole->contextid;
unset($userrole->contextid); // This would collide with user avatar.
if (!array_key_exists($userrole->id, $users)) {
$users[$userrole->id] = $this->prepare_user_for_display($userrole, $extrafields, $now);
}
$a = new stdClass;
$a->role = $roles[$userrole->roleid]->localname;
if ($contextid == $this->context->id) {
$changeable = true;
if ($userrole->component) {
$changeable = false;
if (strpos($userrole->component, 'enrol_') === 0) {
$plugin = substr($userrole->component, 6);
if (isset($plugins[$plugin])) {
$changeable = !$plugin[$plugin]->roles_protected();
}
}
}
$roletext = get_string('rolefromthiscourse', 'enrol', $a);
} else {
$changeable = false;
switch ($userrole->contextlevel) {
case CONTEXT_COURSE :
// Meta course
$roletext = get_string('rolefrommetacourse', 'enrol', $a);
break;
case CONTEXT_COURSECAT :
$roletext = get_string('rolefromcategory', 'enrol', $a);
break;
case CONTEXT_SYSTEM:
default:
$roletext = get_string('rolefromsystem', 'enrol', $a);
break;
}
}
$users[$userrole->id]['roles'] = array();
$users[$userrole->id]['roles'][$userrole->roleid] = array(
'text' => $roletext,
'unchangeable' => !$changeable
);
}
return $users;
}
/**
* 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(course_enrolment_manager $manager, $sort, $direction, $page, $perpage) {
$pageurl = $manager->get_moodlepage()->url;
$users = $this->get_users($sort, $direction, $page, $perpage);
$now = time();
$straddgroup = get_string('addgroup', 'group');
$strunenrol = get_string('unenrol', 'enrol');
$stredit = get_string('edit');
$allroles = $this->get_all_roles();
$assignable = $this->get_assignable_roles();
$allgroups = $this->get_all_groups();
$context = $this->get_context();
$canmanagegroups = has_capability('moodle/course:managegroups', $context);
$url = new moodle_url($pageurl, $this->get_url_params());
$extrafields = get_extra_user_fields($context);
$enabledplugins = $this->get_enrolment_plugins(true);
$userdetails = array();
foreach ($users as $user) {
$details = $this->prepare_user_for_display($user, $extrafields, $now);
// Roles
$details['roles'] = array();
foreach ($this->get_user_roles($user->id) as $rid=>$rassignable) {
$unchangeable = !$rassignable;
if (!is_siteadmin() and !isset($assignable[$rid])) {
$unchangeable = true;
}
$details['roles'][$rid] = array('text'=>$allroles[$rid]->localname, 'unchangeable'=>$unchangeable);
}
// Users
$usergroups = $this->get_user_groups($user->id);
$details['groups'] = array();
foreach($usergroups as $gid=>$unused) {
$details['groups'][$gid] = $allgroups[$gid]->name;
}
// Enrolments
$details['enrolments'] = array();
foreach ($this->get_user_enrolments($user->id) as $ue) {
if (!isset($enabledplugins[$ue->enrolmentinstance->enrol])) {
$details['enrolments'][$ue->id] = array(
'text' => $ue->enrolmentinstancename,
'period' => null,
'dimmed' => true,
'actions' => array()
);
continue;
} else if ($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 {
// If there is no start or end show when user was enrolled.
$period = get_string('periodnone', 'enrol', userdate($ue->timecreated));
$periodoutside = false;
}
$details['enrolments'][$ue->id] = array(
'text' => $ue->enrolmentinstancename,
'period' => $period,
'dimmed' => ($periodoutside or $ue->status != ENROL_USER_ACTIVE or $ue->enrolmentinstance->status != ENROL_INSTANCE_ENABLED),
'actions' => $ue->enrolmentplugin->get_user_enrolment_actions($manager, $ue)
);
}
$userdetails[$user->id] = $details;
}
return $userdetails;
}
/**
* Prepare a user record for display
*
* This function is called by both {@link get_users_for_display} and {@link get_other_users_for_display} to correctly
* prepare user fields for display
*
* Please note that this function does not check capability for moodle/coures:viewhiddenuserfields
*
* @param object $user The user record
* @param array $extrafields The list of fields as returned from get_extra_user_fields used to determine which
* additional fields may be displayed
* @param int $now The time used for lastaccess calculation
* @return array The fields to be displayed including userid, courseid, picture, firstname, lastseen and any
* additional fields from $extrafields
*/
private function prepare_user_for_display($user, $extrafields, $now) {
$details = array(
'userid' => $user->id,
'courseid' => $this->get_course()->id,
'picture' => new user_picture($user),
'firstname' => fullname($user, has_capability('moodle/site:viewfullnames', $this->get_context())),
'lastseen' => get_string('never'),
);
foreach ($extrafields as $field) {