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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/>.
- /**
- * Auto group form
- *
- * @package core_group
- * @copyright 2007 mattc-catalyst (http://moodle.com)
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
- if (!defined('MOODLE_INTERNAL')) {
- die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page
- }
- require_once($CFG->dirroot.'/lib/formslib.php');
- require_once($CFG->dirroot.'/cohort/lib.php');
- /**
- * Auto group form class
- *
- * @package core_group
- * @copyright 2007 mattc-catalyst (http://moodle.com)
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
- class autogroup_form extends moodleform {
- /**
- * Form Definition
- */
- function definition() {
- global $CFG, $COURSE;
- $mform =& $this->_form;
- $mform->addElement('header', 'autogroup', get_string('general'));
- $mform->addElement('text', 'namingscheme', get_string('namingscheme', 'group'));
- $mform->addHelpButton('namingscheme', 'namingscheme', 'group');
- $mform->addRule('namingscheme', get_string('required'), 'required', null, 'client');
- $mform->setType('namingscheme', PARAM_TEXT);
- // There must not be duplicate group names in course.
- $template = get_string('grouptemplate', 'group');
- $gname = groups_parse_name($template, 0);
- if (!groups_get_group_by_name($COURSE->id, $gname)) {
- $mform->setDefault('namingscheme', $template);
- }
- $options = array('groups' => get_string('numgroups', 'group'),
- 'members' => get_string('nummembers', 'group'));
- $mform->addElement('select', 'groupby', get_string('groupby', 'group'), $options);
- $mform->addElement('text', 'number', get_string('number', 'group'),'maxlength="4" size="4"');
- $mform->setType('number', PARAM_INT);
- $mform->addRule('number', null, 'numeric', null, 'client');
- $mform->addRule('number', get_string('required'), 'required', null, 'client');
- $mform->addElement('header', 'groupmembershdr', get_string('groupmembers', 'group'));
- $mform->setExpanded('groupmembershdr', true);
- $options = array(0=>get_string('all'));
- $options += $this->_customdata['roles'];
- $mform->addElement('select', 'roleid', get_string('selectfromrole', 'group'), $options);
- $student = get_archetype_roles('student');
- $student = reset($student);
- if ($student and array_key_exists($student->id, $options)) {
- $mform->setDefault('roleid', $student->id);
- }
- $coursecontext = context_course::instance($COURSE->id);
- if ($cohorts = cohort_get_available_cohorts($coursecontext, COHORT_WITH_ENROLLED_MEMBERS_ONLY)) {
- $options = array(0 => get_string('anycohort', 'cohort'));
- foreach ($cohorts as $c) {
- $options[$c->id] = format_string($c->name, true, context::instance_by_id($c->contextid));
- }
- $mform->addElement('select', 'cohortid', get_string('selectfromcohort', 'cohort'), $options);
- $mform->setDefault('cohortid', '0');
- } else {
- $mform->addElement('hidden','cohortid');
- $mform->setType('cohortid', PARAM_INT);
- $mform->setConstant('cohortid', '0');
- }
- if ($groupings = groups_get_all_groupings($COURSE->id)) {
- $options = array();
- $options[0] = get_string('none');
- foreach ($groupings as $grouping) {
- $options[$grouping->id] = format_string($grouping->name);
- }
- $mform->addElement('select', 'groupingid', get_string('selectfromgrouping', 'group'), $options);
- $mform->setDefault('groupingid', 0);
- $mform->disabledIf('groupingid', 'notingroup', 'checked');
- } else {
- $mform->addElement('hidden', 'groupingid');
- $mform->setType('groupingid', PARAM_INT);
- $mform->setConstant('groupingid', 0);
- }
- if ($groups = groups_get_all_groups($COURSE->id)) {
- $options = array();
- $options[0] = get_string('none');
- foreach ($groups as $group) {
- $options[$group->id] = format_string($group->name);
- }
- $mform->addElement('select', 'groupid', get_string('selectfromgroup', 'group'), $options);
- $mform->setDefault('groupid', 0);
- $mform->disabledIf('groupid', 'notingroup', 'checked');
- } else {
- $mform->addElement('hidden', 'groupid');
- $mform->setType('groupid', PARAM_INT);
- $mform->setConstant('groupid', 0);
- }
- $options = array('no' => get_string('noallocation', 'group'),
- 'random' => get_string('random', 'group'),
- 'firstname' => get_string('byfirstname', 'group'),
- 'lastname' => get_string('bylastname', 'group'),
- 'idnumber' => get_string('byidnumber', 'group'));
- $mform->addElement('select', 'allocateby', get_string('allocateby', 'group'), $options);
- $mform->setDefault('allocateby', 'random');
- $mform->addElement('checkbox', 'nosmallgroups', get_string('nosmallgroups', 'group'));
- $mform->disabledIf('nosmallgroups', 'groupby', 'noteq', 'members');
- $mform->addElement('checkbox', 'notingroup', get_string('notingroup', 'group'));
- $mform->disabledIf('notingroup', 'groupingid', 'neq', 0);
- $mform->disabledIf('notingroup', 'groupid', 'neq', 0);
- if (has_capability('moodle/course:viewsuspendedusers', $coursecontext)) {
- $mform->addElement('checkbox', 'includeonlyactiveenrol', get_string('includeonlyactiveenrol', 'group'), '');
- $mform->addHelpButton('includeonlyactiveenrol', 'includeonlyactiveenrol', 'group');
- $mform->setDefault('includeonlyactiveenrol', true);
- }
- $mform->addElement('header', 'groupinghdr', get_string('grouping', 'group'));
- $options = array('0' => get_string('nogrouping', 'group'),
- '-1'=> get_string('newgrouping', 'group'));
- if ($groupings = groups_get_all_groupings($COURSE->id)) {
- foreach ($groupings as $grouping) {
- $options[$grouping->id] = strip_tags(format_string($grouping->name));
- }
- }
- $mform->addElement('select', 'grouping', get_string('createingrouping', 'group'), $options);
- if ($groupings) {
- $mform->setDefault('grouping', '-1');
- }
- $mform->addElement('text', 'groupingname', get_string('groupingname', 'group'), $options);
- $mform->setType('groupingname', PARAM_TEXT);
- $mform->disabledIf('groupingname', 'grouping', 'noteq', '-1');
- $mform->addElement('hidden','courseid');
- $mform->setType('courseid', PARAM_INT);
- $mform->addElement('hidden','seed');
- $mform->setType('seed', PARAM_INT);
- $buttonarray = array();
- $buttonarray[] = &$mform->createElement('submit', 'preview', get_string('preview'));
- $buttonarray[] = &$mform->createElement('submit', 'submitbutton', get_string('submit'));
- $buttonarray[] = &$mform->createElement('cancel');
- $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
- $mform->closeHeaderBefore('buttonar');
- }
- /**
- * Performs validation of the form information
- *
- * @param array $data
- * @param array $files
- * @return array $errors An array of $errors
- */
- function validation($data, $files) {
- global $CFG, $COURSE;
- $errors = parent::validation($data, $files);
- if ($data['allocateby'] != 'no') {
- $source = array();
- if ($data['cohortid']) {
- $source['cohortid'] = $data['cohortid'];
- }
- if ($data['groupingid']) {
- $source['groupingid'] = $data['groupingid'];
- }
- if ($data['groupid']) {
- $source['groupid'] = $data['groupid'];
- }
- if (!$users = groups_get_potential_members($data['courseid'], $data['roleid'], $source)) {
- $errors['roleid'] = get_string('nousersinrole', 'group');
- }
- /// Check the number entered is sane
- if ($data['groupby'] == 'groups') {
- $usercnt = count($users);
- if ($data['number'] > $usercnt || $data['number'] < 1) {
- $errors['number'] = get_string('toomanygroups', 'group', $usercnt);
- }
- }
- }
- //try to detect group name duplicates
- $name = groups_parse_name(trim($data['namingscheme']), 0);
- if (groups_get_group_by_name($COURSE->id, $name)) {
- $errors['namingscheme'] = get_string('groupnameexists', 'group', $name);
- }
- // check grouping name duplicates
- if ( isset($data['grouping']) && $data['grouping'] == '-1') {
- $name = trim($data['groupingname']);
- if (empty($name)) {
- $errors['groupingname'] = get_string('required');
- } else if (groups_get_grouping_by_name($COURSE->id, $name)) {
- $errors['groupingname'] = get_string('groupingnameexists', 'group', $name);
- }
- }
- /// Check the naming scheme
- if ($data['groupby'] == 'groups' and $data['number'] == 1) {
- // we can use the name as is because there will be only one group max
- } else {
- $matchcnt = preg_match_all('/[#@]{1,1}/', $data['namingscheme'], $matches);
- if ($matchcnt != 1) {
- $errors['namingscheme'] = get_string('badnamingscheme', 'group');
- }
- }
- return $errors;
- }
- }
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