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autogroup_form.php
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autogroup_form.php
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<?php // $Id$
require_once($CFG->dirroot.'/lib/formslib.php');
/// get url variables
class autogroup_form extends moodleform {
// Define the form
function definition() {
global $CFG, $COURSE;
$mform =& $this->_form;
$mform->addElement('header', 'autogroup', get_string('autocreategroups', 'group'));
$options = array(0=>get_string('all'));
$options += $this->_customdata['roles'];
$mform->addElement('select', 'roleid', get_string('selectfromrole', 'group'), $options);
if (!empty($COURSE->defaultrole) and array_key_exists($COURSE->defaultrole, $options)) {
$mform->setDefault('roleid', $COURSE->defaultrole);
} else if (!empty($CFG->defaultcourseroleid) and array_key_exists($CFG->defaultcourseroleid, $options)) {
$mform->setDefault('roleid', $CFG->defaultcourseroleid);
}
$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('checkbox', 'nosmallgroups', get_string('nosmallgroups', 'group'));
$mform->disabledIf('nosmallgroups', 'groupby', 'noteq', 'members');
$mform->setAdvanced('nosmallgroups');
$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->setAdvanced('allocateby');
$mform->addElement('text', 'namingscheme', get_string('namingscheme', 'group'));
$mform->setHelpButton('namingscheme', array(false, get_string('namingschemehelp', 'group'),
false, true, false, get_string('namingschemehelp', 'group')));
$mform->addRule('namingscheme', get_string('required'), 'required', null, 'client');
$mform->setType('namingscheme', PARAM_MULTILANG);
// 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', $template);
}
if (!empty($CFG->enablegroupings)) {
$options = array('0' => get_string('no'),
'-1'=> get_string('newgrouping', 'group'));
if ($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_MULTILANG);
$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'), 'xx');
$buttonarray[] = &$mform->createElement('submit', 'submitbutton', get_string('submit'));
$buttonarray[] = &$mform->createElement('cancel');
$mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
$mform->closeHeaderBefore('buttonar');
}
function validation($data, $files) {
global $CFG, $COURSE;
$errors = parent::validation($data, $files);
if ($data['allocateby'] != 'no') {
if (!$users = groups_get_potential_members($data['courseid'], $data['roleid'])) {
$errors['roleid'] = get_string('nousersinrole', 'group');
}
/// Check the number entered is sane
if ($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
$matchcnt = preg_match_all('/[#@]{1,1}/', $data['namingscheme'], $matches);
if ($matchcnt != 1) {
$errors['namingscheme'] = get_string('badnamingscheme', 'group');
}
return $errors;
}
}
?>