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locallib.php
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locallib.php
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<?php
// This file is part of mod_grouptool for Moodle - http://moodle.org/
//
// It 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.
//
// It 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 mod_grouptool with most of grouptool's logic.
*
* @package mod_grouptool
* @author Philipp Hager
* @author Hannes Laimer
* @copyright 2014 Academic Moodle Cooperation {@link http://www.academic-moodle-cooperation.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot.'/mod/grouptool/definitions.php');
require_once($CFG->libdir.'/formslib.php');
require_once($CFG->dirroot.'/mod/grouptool/lib.php');
require_once($CFG->dirroot.'/group/lib.php');
require_once($CFG->dirroot.'/cohort/lib.php');
require_once($CFG->libdir.'/gradelib.php');
require_once($CFG->libdir.'/grade/grade_grade.php');
require_once($CFG->libdir.'/pdflib.php');
/**
* class containing most of the logic used in grouptool-module
*
* @package mod_grouptool
* @author Philipp Hager
* @copyright 2014 Academic Moodle Cooperation {@link http://www.academic-moodle-cooperation.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mod_grouptool {
/** @var object */
protected $cm;
/** @var object */
protected $course;
/** @var object */
protected $grouptool;
/** @var object instance's context record */
protected $context;
/**
* filter all groups
*/
const FILTER_ALL = 0;
/**
* filter active groups
*/
const FILTER_ACTIVE = 1;
/**
* filter inactive groups
*/
const FILTER_INACTIVE = 2;
/**
* NAME_TAGS - the tags available for grouptool's group naming schemes
*/
const NAME_TAGS = ['[firstname]', '[lastname]', '[idnumber]', '[username]', '@', '#'];
/**
* HIDE_GROUPMEMBERS - never show groupmembers no matter what...
*/
const HIDE_GROUPMEMBERS = GROUPTOOL_HIDE_GROUPMEMBERS;
/**
* SHOW_GROUPMEMBERS_AFTER_DUE - show groupmembers after due date
*/
const SHOW_GROUPMEMBERS_AFTER_DUE = GROUPTOOL_SHOW_GROUPMEMBERS_AFTER_DUE;
/**
* SHOW_GROUPMEMBERS_AFTER_DUE - show members of own group(s) after due date
*/
const SHOW_OWN_GROUPMEMBERS_AFTER_DUE = GROUPTOOL_SHOW_OWN_GROUPMEMBERS_AFTER_DUE;
/**
* SHOW_OWN_GROUPMEMBERS_AFTER_REG - show members of own group(s) immediately after registration
*/
const SHOW_OWN_GROUPMEMBERS_AFTER_REG = GROUPTOOL_SHOW_OWN_GROUPMEMBERS_AFTER_REG;
/**
* SHOW_GROUPMEMBERS - show groupmembers no matter what...
*/
const SHOW_GROUPMEMBERS = GROUPTOOL_SHOW_GROUPMEMBERS;
/**
* Constructor for the grouptool class
*
* If cmid is set create the cm, course, checkmark objects.
*
* @param int $cmid the current course module id - not set for new grouptools
* @param stdClass $grouptool usually null, but if we have it we pass it to save db access
* @param stdClass $cm usually null, but if we have it we pass it to save db access
* @param stdClass $course usually null, but if we have it we pass it to save db access
* @throws \coding_exception
* @throws \dml_exception
* @throws \moodle_exception
*/
public function __construct($cmid, $grouptool=null, $cm=null, $course=null) {
global $DB;
if ($cmid == 'staticonly') {
// Use static functions only!
return;
}
if (!empty($cm)) {
$this->cm = $cm;
} else if (! $this->cm = get_coursemodule_from_id('grouptool', $cmid)) {
print_error('invalidcoursemodule');
}
$this->context = context_module::instance($this->cm->id);
if ($course) {
$this->course = $course;
} else if (! $this->course = $DB->get_record('course', ['id' => $this->cm->course])) {
print_error('invalidid', 'grouptool');
}
if ($grouptool) {
$this->grouptool = $grouptool;
} else if (! $this->grouptool = $DB->get_record('grouptool',
['id' => $this->cm->instance])) {
print_error('invalidid', 'grouptool');
}
$this->grouptool->cmidnumber = $this->cm->idnumber;
$this->grouptool->course = $this->course->id;
/*
* visibility handled by require_login() with $cm parameter
* get current group only when really needed
*/
}
/**
* Return the grouptools name
*
* @return string the name
*/
public function get_name() {
return $this->grouptool->name;
}
/**
* Return Grouptool's settings
*
* @return object Grouptool's DB record
*/
public function get_settings() {
return $this->grouptool;
}
/**
* Return Grouptool's multiple registrations settings
*
* @return array [allow_multiple, choose_min, choose_max]
*/
public function get_reg_settings() {
return [$this->grouptool->allow_multiple, $this->grouptool->choose_min, $this->grouptool->choose_max];
}
/**
* Translates top level tabs.
*
* @param tabobject[] $tabs
* @param string|null $tab
*/
public static function translate_top_level_tabs(array $tabs, string $tab = null) {
global $SESSION;
// Now translate, if there's a top level tab chosen, which has just child-tabs!
switch ($tab) {
case 'users':
case 'administration':
if (!empty($tabs[$tab]->subtree)) {
$tab = key($tabs[$tab]->subtree);
$SESSION->mod_grouptool->currenttab = $tab;
}
break;
}
}
/**
* Print a message along with button choices for Continue/Cancel
*
* If a string or moodle_url is given instead of a single_button, method defaults to post.
* If cancel=null only continue button is displayed!
*
* @param string $message The question to ask the user
* @param single_button|moodle_url|string $continue The single_button component representing the
* Continue answer. Can also be a moodle_url
* or string URL
* @param single_button|moodle_url|string $cancel The single_button component representing the
* Cancel answer. Can also be a moodle_url or
* string URL
* @return string HTML fragment
* @throws coding_exception
* @throws moodle_exception
*/
public function confirm($message, $continue, $cancel = null) {
global $OUTPUT;
if (!($continue instanceof single_button)) {
if (is_string($continue)) {
$url = new moodle_url($continue);
$continue = new single_button($url, get_string('continue'), 'post', true);
} else if ($continue instanceof moodle_url) {
$continue = new single_button($continue, get_string('continue'), 'post', true);
} else {
throw new coding_exception('The continue param to grouptool::confirm() must be either a'.
' URL (string/moodle_url) or a single_button instance.');
}
}
if (!($cancel instanceof single_button)) {
if (is_string($cancel)) {
$cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
} else if ($cancel instanceof moodle_url) {
$cancel = new single_button($cancel, get_string('cancel'), 'get');
} else if ($cancel == null) {
$cancel = null;
} else {
throw new coding_exception('The cancel param to grouptool::confirm() must be either a'.
' URL (string/moodle_url), single_button instance or null.');
}
}
$output = $OUTPUT->box_start('generalbox modal modal-dialog modal-in-page show', 'notice');
$output .= $OUTPUT->box_start('modal-content', 'modal-content');
$output .= $OUTPUT->box_start('modal-header', 'modal-header');
$output .= html_writer::tag('h4', get_string('confirm'));
$output .= $OUTPUT->box_end();
$output .= $OUTPUT->box_start('modal-body', 'modal-body');
$output .= html_writer::tag('p', $message);
$output .= $OUTPUT->box_end();
$output .= $OUTPUT->box_start('modal-footer', 'modal-footer');
$cancel = ($cancel != null) ? $OUTPUT->render($cancel) : "";
$output .= html_writer::tag('div', $OUTPUT->render($continue) . $cancel, ['class' => 'buttons']);
$output .= $OUTPUT->box_end();
$output .= $OUTPUT->box_end();
$output .= $OUTPUT->box_end();
return $output;
}
/**
* Parse a group name for characters to replace
*
* @param string $namescheme The scheme used for building group names
* @param int $groupnumber The number of the group to be used in the parsed format string
* @param stdClass|array $members optional object or array of objects containing data of members
* for the tags to be replaced with
* @param int $digits optional number of digits for from-to-group-creation
* @return string the parsed format string
*/
private function groups_parse_name($namescheme, $groupnumber, $members = null, $digits = 0) {
$tags = ['firstname', 'lastname', 'idnumber', 'username'];
$pregsearch = "#\[(".implode("|", $tags).")\]#";
if (preg_match($pregsearch, $namescheme) > 0) {
if ($members != null) {
$data = [];
if (is_array($members)) {
foreach ($tags as $key => $tag) {
foreach ($members as $member) {
if (!empty($member->$tag)) {
if (isset($data[$key]) && $data[$key] != "") {
$data[$key] .= "-";
} else if (!isset($data[$key])) {
$data[$key] = "";
}
$data[$key] .= substr($member->$tag, 0, 3);
}
}
if (empty($data[$key])) {
$data[$key] = "no".$tag."#";
}
}
} else {
foreach ($tags as $key => $tag) {
if (!empty($members->$tag)) {
$data[$key] = $members->$tag;
} else {
$data[$key] = "no".$tag."#";
}
}
}
foreach ($tags as $key => $tag) {
$tags[$key] = "[".$tag."]";
}
$namescheme = str_replace($tags, $data, $namescheme);
} else {
foreach ($tags as $key => $tag) {
$tags[$key] = "[".$tag."]";
}
$namescheme = str_replace($tags, "", $namescheme);
}
}
if (strstr($namescheme, '@') !== false) { // Convert $groupnumber to a character series!
if ($groupnumber > GROUPTOOL_BEP) {
$nexttempnumber = $groupnumber;
$string = "";
$orda = ord('A');
$ordz = ord('Z');
do {
$tempnumber = $nexttempnumber;
$mod = ($tempnumber) % ($ordz - $orda + 1);
$letter = chr($orda + $mod);
$string .= $letter;
$nexttempnumber = floor(($tempnumber) / ($ordz - $orda + 1)) - 1;
} while ($tempnumber >= ($ordz - $orda + 1));
$namescheme = str_replace('@', strrev($string), $namescheme);
} else {
$letter = 'A';
for ($i = 0; $i < $groupnumber; $i++) {
$letter++;
}
$namescheme = str_replace('@', $letter, $namescheme);
}
}
if (strstr($namescheme, '#') !== false) {
if ($digits != 0) {
$format = '%0'.$digits.'d';
} else {
$format = '%d';
}
$namescheme = str_replace('#', sprintf($format, $groupnumber + 1), $namescheme);
}
return $namescheme;
}
/**
* Adds all missin agrp-entries for this instance!
*
* @throws coding_exception
* @throws dml_exception
*/
public function add_missing_agrps() {
global $DB;
// Get all course's group-IDs!
$groupids = groups_get_all_groups($this->course->id, 0, 0, 'g.id');
$groupids = array_keys($groupids);
// Get all group-IDs which have active group entries!
$ok = $DB->get_fieldset_select('grouptool_agrps', "DISTINCT groupid", "grouptoolid = ?", [$this->grouptool->id]);
$missing = array_diff($groupids, $ok);
if (!empty($missing)) {
$added = [];
foreach ($missing as $cur) {
$newgrp = $this->add_agrp_entry($cur);
$added[] = $newgrp->id;
}
if (!empty($added)) {
// Set them inactive!
list($addedsql, $addedparams) = $DB->get_in_or_equal($added);
$DB->set_field_select('grouptool_agrps', 'active', 0, "id ".$addedsql, $addedparams);
}
}
}
/**
* Adds an agrp-entry for newly created group!
*
* @param int $groupid Group ID to add agrp entry for!
* @return stdClass (new) agrp record
* @throws dml_exception
*/
protected function add_agrp_entry($groupid) {
global $DB;
// Insert into agrp-table!
$newagrp = new stdClass();
$newagrp->groupid = $groupid;
$newagrp->grouptoolid = $this->grouptool->id;
$newagrp->sort_order = 999999;
if ($this->grouptool->allow_reg == true) {
$newagrp->active = 1;
} else {
$newagrp->active = 0;
}
$attr = [
'grouptoolid' => $this->grouptool->id,
'groupid' => $groupid
];
if (!$DB->record_exists('grouptool_agrps', $attr)) {
$newagrp->id = $DB->insert_record('grouptool_agrps', $newagrp, true);
} else {
/* This is also the case if eventhandlers work properly
* because group gets allready created in eventhandler
*/
$newagrp->id = $DB->get_field('grouptool_agrps', 'id', $attr);
if ($this->grouptool->allow_reg == true) {
$DB->set_field('grouptool_agrps', 'active', 1, ['id' => $newagrp->id]);
}
}
return $newagrp;
}
/**
* Create moodle-groups and also create non-active entries for the created groups
* for this instance
*
* @param stdClass $data data from administration-form with all settings for group creation
* @param stdClass[] $users which users to registrate in the created groups
* @param int $userpergrp how many users should be registrated per group
* @param int $numgrps how many groups should be created
* @param bool $previewonly optional only show preview of created groups
* @return array ( 0 => error, 1 => message )
* @throws coding_exception
* @throws dml_exception
* @throws moodle_exception
* @throws required_capability_exception
*/
private function create_groups($data, $users, $userpergrp, $numgrps, $previewonly = false) {
global $DB, $USER;
require_capability('mod/grouptool:create_groups', $this->context);
$namestouse = [];
// Allocate members from the selected role to groups!
$usercnt = count($users);
switch ($data->allocateby) {
case 'random':
srand($data->seed);
shuffle($users);
break;
case 'no':
case 'lastname':
uasort($users, function($a, $b) {
$cmp = strcmp($a->lastname, $b->lastname);
if ($cmp == 0) {
return strcmp($a->firstname, $b->firstname);
}
if ($cmp == 0) {
$cmp = strcmp($a->idnumber, $b->idnumber);
}
return $cmp;
});
break;
case 'firstname':
uasort($users, function($a, $b) {
$cmp = strcmp($a->firstname, $b->firstname);
if ($cmp == 0) {
$cmp = strcmp($a->lastname, $b->lastname);
}
if ($cmp == 0) {
$cmp = strcmp($a->idnumber, $b->idnumber);
}
return $cmp;
});
break;
case 'idnumber':
uasort($users, function($a, $b) {
$cmp = strcmp($a->idnumber, $b->idnumber);
if ($cmp == 0) {
$cmp = strcmp($a->lastname, $b->lastname);
}
if ($cmp == 0) {
$cmp = strcmp($a->firstname, $b->firstname);
}
return $cmp;
});
break;
default:
print_error('unknoworder');
}
$groups = [];
// Allocate the users - all groups equal count first!
for ($i = 0; $i < $numgrps; $i++) {
$groups[$i] = [];
$groups[$i]['members'] = [];
if ($data->allocateby == 'no') {
continue; // Do not allocate users!
}
for ($j = 0; $j < $userpergrp; $j++) {
if (empty($users)) {
break 2;
}
$user = array_shift($users);
$groups[$i]['members'][$user->id] = $user;
}
}
// Now distribute the rest!
if ($data->allocateby != 'no') {
for ($i = 0; $i < $numgrps; $i++) {
if (empty($users)) {
break 1;
}
$user = array_shift($users);
$groups[$i]['members'][$user->id] = $user;
}
}
// Every member is there, so we can parse the name!
$digits = ceil(log10($numgrps));
for ($i = 0; $i < $numgrps; $i++) {
$groups[$i]['name'] = $this->groups_parse_name(trim($data->namingscheme), $i,
$groups[$i]['members'], $digits);
}
if ($previewonly) {
$error = false;
$table = new html_table();
if ($data->allocateby == 'no') {
$table->head = [get_string('groupscount', 'group', $numgrps)];
$table->size = ['100%'];
$table->align = ['left'];
} else {
$table->head = [
get_string('groupscount', 'group', $numgrps),
get_string('groupmembers', 'group'),
get_string('usercounttotal', 'group', $usercnt)
];
$table->size = ['20%', '70%', '10%'];
$table->align = ['left', 'left', 'center'];
}
$table->data = [];
foreach ($groups as $group) {
$line = [];
if (groups_get_group_by_name($this->course->id, $group['name']) || in_array($group['name'], $namestouse)) {
$error = true;
if (in_array($group['name'], $namestouse)) {
$line[] = '<span class="late">'.
get_string('nameschemenotunique', 'grouptool', $group['name']).'</span>';
} else {
$line[] = '<span class="late">'.
get_string('groupnameexists', 'group', $group['name']).'</span>';
}
} else {
$line[] = $group['name'];
$namestouse[] = $group['name'];
}
if ($data->allocateby != 'no') {
$unames = [];
foreach ($group['members'] as $user) {
$unames[] = fullname($user);
}
$line[] = implode(', ', $unames);
$line[] = count($group['members']);
}
$table->data[] = $line;
}
return [0 => $error, 1 => html_writer::table($table)];
} else {
$grouping = null;
$createdgrouping = 0;
$createdgroups = [];
$failed = false;
// Prepare grouping!
if (!empty($data->grouping)) {
if ($data->grouping < 0) {
$grouping = new stdClass();
$grouping->courseid = $this->course->id;
$grouping->name = trim($data->groupingname);
$grouping->id = groups_create_grouping($grouping);
$createdgrouping = $grouping->id;
} else {
$grouping = groups_get_grouping($data->grouping);
}
}
// Trigger group_creation_started event.
$groupingid = !empty($grouping) ? $grouping->id : 0;
switch ($data->mode) {
case GROUPTOOL_GROUPS_AMOUNT:
\mod_grouptool\event\group_creation_started::create_groupamount($this->cm, $data->namingscheme,
$data->numberofgroups, $groupingid)->trigger();
break;
case GROUPTOOL_MEMBERS_AMOUNT:
\mod_grouptool\event\group_creation_started::create_memberamount($this->cm, $data->namingscheme,
$data->numberofmembers,
$groupingid)->trigger();
break;
}
// Save the groups data!
foreach ($groups as $group) {
if (groups_get_group_by_name($this->course->id, $group['name'])) {
$error = get_string('groupnameexists', 'group', $group['name']);
$failed = true;
continue;
}
$newgroup = new stdClass();
$newgroup->courseid = $this->course->id;
$newgroup->name = $group['name'];
$newgroup->enablemessaging = $data->enablegroupmessaging == 1 ? 1 : null;
$groupid = groups_create_group($newgroup);
$newagrp = $this->add_agrp_entry($groupid);
$createdgroups[] = $groupid;
foreach ($group['members'] as $user) {
groups_add_member($groupid, $user->id);
$usrreg = new stdClass();
$usrreg->userid = $user->id;
$usrreg->agrpid = $newagrp->id;
$usrreg->timestamp = time();
$usrreg->modified_by = $USER->id;
$attr = [
'userid' => $user->id,
'agrpid' => $newagrp->id
];
if (!$DB->record_exists('grouptool_registered', $attr)) {
$DB->insert_record('grouptool_registered', $usrreg);
} else {
$DB->set_field('grouptool_registered', 'modified_by', $USER->id, $attr);
}
}
if ($grouping) {
groups_assign_grouping($grouping->id, $groupid);
}
}
if ($failed) {
foreach ($createdgroups as $groupid) {
groups_delete_group($groupid);
}
if ($createdgrouping) {
groups_delete_grouping($createdgrouping);
}
} else {
// Trigger agrps updated via groupcreation event.
$groupingid = !empty($grouping) ? $grouping->id : 0;
\mod_grouptool\event\agrps_updated::create_groupcreation($this->cm, $data->namingscheme, $numgrps,
$groupingid)->trigger();
}
}
if (empty($failed)) {
$preview = get_string('groups_created', 'grouptool');
} else if (empty($preview)) {
if (!empty($error)) {
$preview = $error;
} else {
$preview = get_string('group_creation_failed', 'grouptool');
}
}
return [$failed, $preview];
}
/**
* Create moodle-groups and also create non-active entries for the created groups
* for this instance also used for creation of N groups with M members!
*
* @param stdClass $data data from administration-form with all settings for group creation
* @param bool $previewonly optional only show preview of created groups
* @return array ( 0 => error, 1 => message )
* @throws coding_exception
* @throws dml_exception
* @throws moodle_exception
* @throws required_capability_exception
*/
private function create_fromto_groups($data, $previewonly = false) {
global $DB, $OUTPUT;
require_capability('mod/grouptool:create_groups', $this->context);
$groups = [];
// Every member is there, so we can parse the name!
for ($i = clean_param($data->from, PARAM_INT); $i <= clean_param($data->to, PARAM_INT); $i++) {
$groups[] = $this->groups_parse_name(trim($data->namingscheme), $i - 1, null,
clean_param($data->digits, PARAM_INT));
}
if ($previewonly) {
$error = false;
$table = new html_table();
$table->head = [
get_string('groupscount', 'group',
(clean_param($data->to, PARAM_INT) - clean_param($data->from, PARAM_INT) + 1))
];
$table->size = ['100%'];
$table->align = ['left'];
$table->data = [];
$createdgroups = [];
foreach ($groups as $group) {
$line = [];
if (groups_get_group_by_name($this->course->id, $group) || in_array($group, $createdgroups)) {
$error = true;
if (in_array($group, $createdgroups)) {
$line[] = '<span class="late">'.
get_string('nameschemenotunique', 'grouptool', $group).'</span>';
} else {
$line[] = '<span class="late">'.
get_string('groupnameexists', 'group', $group).'</span>';
}
} else {
$line[] = $group;
$createdgroups[] = $group;
}
$table->data[] = $line;
}
// Notification if activation of group size is imminent!
if (empty($error) && !empty($data->numberofmembers)) {
$a = new stdClass();
$a->field = get_string('number_of_members', 'grouptool');
$a->globalsize = $this->grouptool->grpsize;
if ($data->numberofmembers != $this->grouptool->grpsize && !$this->grouptool->use_size) {
echo $OUTPUT->notification(get_string('groupsize_gets_enabled', 'grouptool', $a), 'info');
}
}
return [0 => $error, 1 => html_writer::table($table)];
} else {
$grouping = null;
$createdgrouping = null;
$createdgroups = [];
$failed = false;
// Prepare grouping!
if (!empty($data->grouping)) {
if ($data->grouping < 0) {
$grouping = new stdClass();
$grouping->courseid = $this->course->id;
$grouping->name = trim($data->groupingname);
$grouping->id = groups_create_grouping($grouping);
$createdgrouping = $grouping->id;
} else {
$grouping = groups_get_grouping($data->grouping);
}
}
// Trigger group creation started event.
$groupingid = !empty($grouping->id) ? $grouping->id : 0;
\mod_grouptool\event\group_creation_started::create_fromto($this->cm, $data->namingscheme, $data->from,
$data->to, $groupingid)->trigger();
// Save the groups data!
$error = '';
foreach ($groups as $group) {
if (groups_get_group_by_name($this->course->id, $group)) {
$error = get_string('groupnameexists', 'group', $group);
$failed = true;
break;
}
$newgroup = new stdClass();
$newgroup->courseid = $this->course->id;
$newgroup->name = $group;
$newgroup->enablemessaging = $data->enablegroupmessaging == 1 ? 1 : null;
$groupid = groups_create_group($newgroup);
// Insert into agrp-table!
$newagrp = $this->add_agrp_entry($groupid);
if (!empty($data->numberofmembers) && ($data->numberofmembers != $this->grouptool->grpsize)) {
$DB->set_field('grouptool_agrps', 'grpsize', $data->numberofmembers, ['id' => $newagrp->id]);
}
$createdgroups[] = $groupid;
if ($grouping) {
groups_assign_grouping($grouping->id, $groupid);
}
}
if ($failed) {
foreach ($createdgroups as $groupid) {
groups_delete_group($groupid);
}
if ($createdgrouping) {
groups_delete_grouping($createdgrouping);
}
return [
0 => $failed,
1 => get_string('group_creation_failed', 'grouptool').html_writer::empty_tag('br').$error
];
} else {
// Activate group size if we already used it when creating groups!
if (!empty($data->numberofmembers)) {
$this->grouptool->use_size = true;
$DB->update_record('grouptool', $this->grouptool);
}
$numgrps = clean_param($data->to, PARAM_INT) - clean_param($data->from, PARAM_INT) + 1;
// Trigger agrps updated via groupcreation event.
$groupingid = !empty($grouping) ? $grouping->id : 0;
\mod_grouptool\event\agrps_updated::create_groupcreation($this->cm, $data->namingscheme,
$numgrps, $groupingid)->trigger();
return [0 => $failed, 1 => get_string('groups_created', 'grouptool')];
}
}
}
/**
* Create a moodle group for each of the users in $users
*
* @param stdClass[] $users array of users-objects for which to create the groups
* @param string $namescheme scheme determining how to name the created groups
* @param int $grouping -1 => create new grouping,
* 0 => no grouping,
* >0 => assign groups to grouping with that id
* @param string $groupingname optional name for created grouping
* @param bool $previewonly optional only show preview of created groups
* @param int $enablegroupmessaging optional enable messaging within group (default: no)
* @return array ( 0 => error, 1 => message )
* @throws coding_exception
* @throws dml_exception
* @throws moodle_exception
* @throws required_capability_exception
*/
private function create_one_person_groups($users, $namescheme = "[idnumber]", $grouping = 0, $groupingname = null,
$previewonly = false, $enablegroupmessaging=0) {
global $DB, $USER;
require_capability('mod/grouptool:create_groups', $this->context);
// Allocate members from the selected role to groups!
$usercnt = count($users);
// Prepare group data!
$groups = [];
$i = 0;
$digits = ceil(log10(count($users)));
foreach ($users as $user) {
$groups[$i] = [];
$groups[$i]['name'] = $this->groups_parse_name(trim($namescheme), $i, $user,
$digits);
$groups[$i]['member'] = $user;
$i++;
}
if ($previewonly) {
$error = false;
$table = new html_table();
$table->head = [
get_string('groupscount', 'group', $usercnt),
get_string('groupmembers', 'group')
];
$table->size = ['30%', '70%'];
$table->align = ['left', 'left'];
$table->data = [];
$groupnames = [];
foreach ($groups as $group) {
$line = [];
if (groups_get_group_by_name($this->course->id, $group['name'])
|| in_array($group['name'], $groupnames)) {
$error = true;
if (in_array($group['name'], $groupnames)) {
$line[] = '<span class="late">'.
get_string('nameschemenotunique', 'grouptool', $group['name']).'</span>';
} else {
$line[] = '<span class="late">'.
get_string('groupnameexists', 'group', $group['name']).'</span>';
}
} else {
$groupnames[] = $group['name'];
$line[] = $group['name'];
}
$line[] = fullname($group['member']);
$table->data[] = $line;
}
return [0 => $error, 1 => html_writer::table($table)];
} else {
$createdgrouping = null;
$createdgroups = [];
$failed = false;
// Prepare grouping!
if (!empty($grouping)) {
if ($grouping < 0) {
$grouping = new stdClass();
$grouping->courseid = $this->course->id;
$grouping->name = trim($groupingname);
$grouping->id = groups_create_grouping($grouping);
$createdgrouping = $grouping->id;
} else {
$grouping = groups_get_grouping($grouping);
}
}
// Trigger group_creation_started event.
$groupingid = !empty($grouping) ? $grouping->id : 0;
\mod_grouptool\event\group_creation_started::create_person($this->cm, $namescheme, $groupingid)->trigger();
// Save the groups data!
$error = '';
foreach ($groups as $group) {
if (groups_get_group_by_name($this->course->id, $group['name'])) {
$error = get_string('groupnameexists', 'group', $group['name']);
$failed = true;
break;
}
$newgroup = new stdClass();
$newgroup->courseid = $this->course->id;
$newgroup->name = $group['name'];
$newgroup->enablemessaging = $enablegroupmessaging == 1 ? 1 : null;
$groupid = groups_create_group($newgroup);
// Insert into agrp-table!
$newagrp = new stdClass();
$newagrp->groupid = $groupid;
$newagrp->grouptoolid = $this->grouptool->id;
$newagrp->sort_order = 999999;
if ($this->grouptool->allow_reg == true) {
$newagrp->active = 1;
} else {
$newagrp->active = 0;
}
if (!$DB->record_exists('grouptool_agrps', [
'grouptoolid' => $this->grouptool->id,
'groupid' => $groupid
])) {
$newagrp->id = $DB->insert_record('grouptool_agrps', $newagrp, true);
} else {
/* This is also the case if eventhandlers work properly
* because group gets allready created in eventhandler
*/
$newagrp->id = $DB->get_field('grouptool_agrps', 'id', [
'grouptoolid' => $this->grouptool->id,
'groupid' => $groupid
]);
if ($this->grouptool->allow_reg == true) {
$DB->set_field('grouptool_agrps', 'active', 1, ['id' => $newagrp->id]);
}
}
$createdgroups[] = $groupid;
groups_add_member($groupid, $group['member']->id);
$usrreg = new stdClass();
$usrreg->userid = $group['member']->id;
$usrreg->agrpid = $newagrp->id;
$usrreg->timestamp = time();
$usrreg->modified_by = $USER->id;
$attr = [
'userid' => $group['member']->id,
'agrpid' => $newagrp->id
];
if (!$DB->record_exists('grouptool_registered', $attr)) {
$DB->insert_record('grouptool_registered', $usrreg);
} else {
$DB->set_field('grouptool_registered', 'modified_by', $USER->id, $attr);
}
if ($grouping) {
groups_assign_grouping($grouping->id, $groupid);
}
}
if ($failed) {
foreach ($createdgroups as $groupid) {
groups_delete_group($groupid);
}
if ($createdgrouping) {
groups_delete_grouping($createdgrouping);
}
return [
0 => $failed,
1 => get_string('group_creation_failed', 'grouptool').html_writer::empty_tag('br').$error
];
} else {
// Trigger agrps updated via groupcreation event.
$groupingid = !empty($grouping) ? $grouping->id : 0;
\mod_grouptool\event\agrps_updated::create_groupcreation($this->cm, $namescheme,
count($groups), $groupingid)->trigger();
return [0 => $failed, 1 => get_string('groups_created', 'grouptool')];
}
}
}
/**
* Create a grouping for each selected groupmoodle-groups
*
* Uses $SESSION->grouptool->view_administration->use_all to determin if groupings for all
* or just selected groups should be created and also uses
* $SESSION->grouptool->view_administration->grouplist[$group->id]['active']
* to determin which groups have been selected
*
* @param int $courseid optional id of course to create for
* @param bool $previewonly optional only show preview of created groups
* @return array ( 0 => error, 1 => message )
* @throws coding_exception
* @throws moodle_exception
* @throws required_capability_exception
*/
private function create_group_groupings($courseid = null, $previewonly = false) {
global $SESSION, $OUTPUT;
require_capability('mod/grouptool:create_groupings', $this->context);
// Create groupings!
$created = [];