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/
user_groups_editable.php
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/
user_groups_editable.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/>.
/**
* Contains class core_group\output\user_groups_editable
*
* @package core_group
* @copyright 2017 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_group\output;
use context_course;
use core_user;
use core_external;
use coding_exception;
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/group/lib.php');
/**
* Class to display list of user groups.
*
* @package core_group
* @copyright 2017 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class user_groups_editable extends \core\output\inplace_editable {
/** @var $coursegroups */
private $coursegroups = null;
/** @var $context */
private $context = null;
/**
* Constructor.
*
* @param \stdClass $course The current course
* @param \context $context The course context
* @param \stdClass $user The current user
* @param \stdClass[] $coursegroups The list of course groups from groups_get_all_groups with membership.
* @param array $value Array of groupids.
*/
public function __construct($course, $context, $user, $coursegroups, $value) {
// Check capabilities to get editable value.
$editable = has_capability('moodle/course:managegroups', $context) && !empty($coursegroups);
// Invent an itemid.
$itemid = $course->id . ':' . $user->id;
$value = json_encode($value);
// Remember these for the display value.
$this->coursegroups = $coursegroups;
$this->context = $context;
parent::__construct('core_group', 'user_groups', $itemid, $editable, $value, $value);
// Assignable groups.
$options = [];
foreach ($coursegroups as $group) {
$options[$group->id] = format_string($group->name, true, ['context' => $this->context]);
}
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $this->context));
$this->edithint = get_string('editusersgroupsa', 'group', $fullname);
$this->editlabel = get_string('editusersgroupsa', 'group', $fullname);
$attributes = ['multiple' => true];
$this->set_type_autocomplete($options, $attributes);
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param \renderer_base $output
* @return array
*/
public function export_for_template(\renderer_base $output) {
$listofgroups = [];
$groupids = json_decode($this->value);
foreach ($groupids as $id) {
$listofgroups[] = format_string($this->coursegroups[$id]->name, true, ['context' => $this->context]);
}
if (!empty($listofgroups)) {
$this->displayvalue = implode(', ', $listofgroups);
} else {
$this->displayvalue = get_string('groupsnone');
}
return parent::export_for_template($output);
}
/**
* Updates the value in database and returns itself, called from inplace_editable callback
*
* @param int $itemid
* @param mixed $newvalue
* @return \self
*/
public static function update($itemid, $newvalue) {
// Check caps.
// Do the thing.
// Return one of me.
// Validate the inputs.
list($courseid, $userid) = explode(':', $itemid, 2);
$courseid = clean_param($courseid, PARAM_INT);
$userid = clean_param($userid, PARAM_INT);
$groupids = json_decode($newvalue);
foreach ($groupids as $index => $groupid) {
$groupids[$index] = clean_param($groupid, PARAM_INT);
}
// Check user is enrolled in the course.
$context = context_course::instance($courseid);
core_external::validate_context($context);
if (!is_enrolled($context, $userid)) {
throw new coding_exception('User does not belong to the course');
}
// Check that all the groups belong to the course.
$coursegroups = groups_get_all_groups($courseid, 0, 0, 'g.*', true);
$byid = [];
foreach ($groupids as $groupid) {
if (!isset($coursegroups[$groupid])) {
throw new coding_exception('Group does not belong to the course');
}
$byid[$groupid] = $groupid;
}
$groupids = $byid;
// Check permissions.
require_capability('moodle/course:managegroups', $context);
// Process adds.
foreach ($groupids as $groupid) {
if (!isset($coursegroups[$groupid]->members[$userid])) {
// Add them.
groups_add_member($groupid, $userid);
// Keep this variable in sync.
$coursegroups[$groupid]->members[$userid] = $userid;
}
}
// Process removals.
foreach ($coursegroups as $groupid => $group) {
if (isset($group->members[$userid]) && !isset($groupids[$groupid])) {
if (groups_remove_member_allowed($groupid, $userid)) {
groups_remove_member($groupid, $userid);
unset($coursegroups[$groupid]->members[$userid]);
} else {
$groupids[$groupid] = $groupid;
}
}
}
$course = get_course($courseid);
$user = core_user::get_user($userid);
return new self($course, $context, $user, $coursegroups, array_values($groupids));
}
}