/mod/quiz/override_form.php
PHP | 266 lines | 164 code | 41 blank | 61 comment | 32 complexity | dc10e411a6cee3debfbf93586b6c6e7e MD5 | raw file
- <?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/>.
- /**
- * Settings form for overrides in the quiz module.
- *
- * @package mod
- * @subpackage quiz
- * @copyright 2010 Matt Petro
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
- defined('MOODLE_INTERNAL') || die();
- require_once($CFG->libdir . '/formslib.php');
- /**
- * Form for editing settings overrides.
- *
- * @copyright 2010 Matt Petro
- * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
- class quiz_override_form extends moodleform {
- /** @var object course module object. */
- protected $cm;
- /** @var object the quiz settings object. */
- protected $quiz;
- /** @var context the quiz context. */
- protected $context;
- /** @var bool editing group override (true) or user override (false). */
- protected $groupmode;
- /** @var int groupid, if provided. */
- protected $groupid;
- /** @var int userid, if provided. */
- protected $userid;
- /**
- * Constructor.
- * @param moodle_url $submiturl the form action URL.
- * @param object course module object.
- * @param object the quiz settings object.
- * @param context the quiz context.
- * @param bool editing group override (true) or user override (false).
- * @param object $override the override being edited, if it already exists.
- */
- public function __construct($submiturl, $cm, $quiz, $context, $groupmode, $override) {
- $this->cm = $cm;
- $this->quiz = $quiz;
- $this->context = $context;
- $this->groupmode = $groupmode;
- $this->groupid = empty($override->groupid) ? 0 : $override->groupid;
- $this->userid = empty($override->userid) ? 0 : $override->userid;
- parent::__construct($submiturl, null, 'post');
- }
- protected function definition() {
- global $CFG, $DB;
- $cm = $this->cm;
- $mform = $this->_form;
- $mform->addElement('header', 'override', get_string('override', 'quiz'));
- if ($this->groupmode) {
- // Group override.
- if ($this->groupid) {
- // There is already a groupid, so freeze the selector.
- $groupchoices = array();
- $groupchoices[$this->groupid] = groups_get_group_name($this->groupid);
- $mform->addElement('select', 'groupid',
- get_string('overridegroup', 'quiz'), $groupchoices);
- $mform->freeze('groupid');
- } else {
- // Prepare the list of groups.
- $groups = groups_get_all_groups($cm->course);
- if (empty($groups)) {
- // Generate an error.
- $link = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id));
- print_error('groupsnone', 'quiz', $link);
- }
- $groupchoices = array();
- foreach ($groups as $group) {
- $groupchoices[$group->id] = $group->name;
- }
- unset($groups);
- if (count($groupchoices) == 0) {
- $groupchoices[0] = get_string('none');
- }
- $mform->addElement('select', 'groupid',
- get_string('overridegroup', 'quiz'), $groupchoices);
- $mform->addRule('groupid', get_string('required'), 'required', null, 'client');
- }
- } else {
- // User override.
- if ($this->userid) {
- // There is already a userid, so freeze the selector.
- $user = $DB->get_record('user', array('id'=>$this->userid));
- $userchoices = array();
- $userchoices[$this->userid] = fullname($user);
- $mform->addElement('select', 'userid',
- get_string('overrideuser', 'quiz'), $userchoices);
- $mform->freeze('userid');
- } else {
- // Prepare the list of users.
- $users = array();
- list($sort, $sortparams) = users_order_by_sql('u');
- if (!empty($sortparams)) {
- throw new coding_exception('users_order_by_sql returned some query parameters. ' .
- 'This is unexpected, and a problem because there is no way to pass these ' .
- 'parameters to get_users_by_capability. See MDL-34657.');
- }
- if (!empty($CFG->enablegroupmembersonly) && $cm->groupmembersonly) {
- // Only users from the grouping.
- $groups = groups_get_all_groups($cm->course, 0, $cm->groupingid);
- if (!empty($groups)) {
- $users = get_users_by_capability($this->context, 'mod/quiz:attempt',
- 'u.id, u.firstname, u.lastname, u.email',
- $sort, '', '', array_keys($groups),
- '', false, true);
- }
- } else {
- $users = get_users_by_capability($this->context, 'mod/quiz:attempt',
- 'u.id, u.firstname, u.lastname, u.email' ,
- $sort, '', '', '', '', false, true);
- }
- if (empty($users)) {
- // Generate an error.
- $link = new moodle_url('/mod/quiz/overrides.php', array('cmid'=>$cm->id));
- print_error('usersnone', 'quiz', $link);
- }
- $userchoices = array();
- foreach ($users as $id => $user) {
- if (empty($invalidusers[$id]) || (!empty($override) &&
- $id == $override->userid)) {
- $userchoices[$id] = fullname($user) . ', ' . $user->email;
- }
- }
- unset($users);
- if (count($userchoices) == 0) {
- $userchoices[0] = get_string('none');
- }
- $mform->addElement('searchableselector', 'userid',
- get_string('overrideuser', 'quiz'), $userchoices);
- $mform->addRule('userid', get_string('required'), 'required', null, 'client');
- }
- }
- // Password.
- // This field has to be above the date and timelimit fields,
- // otherwise browsers will clear it when those fields are changed.
- $mform->addElement('passwordunmask', 'password', get_string('requirepassword', 'quiz'));
- $mform->setType('password', PARAM_TEXT);
- $mform->addHelpButton('password', 'requirepassword', 'quiz');
- $mform->setDefault('password', $this->quiz->password);
- // Open and close dates.
- $mform->addElement('date_time_selector', 'timeopen',
- get_string('quizopen', 'quiz'), array('optional' => true));
- $mform->setDefault('timeopen', $this->quiz->timeopen);
- $mform->addElement('date_time_selector', 'timeclose',
- get_string('quizclose', 'quiz'), array('optional' => true));
- $mform->setDefault('timeclose', $this->quiz->timeclose);
- // Time limit.
- $mform->addElement('duration', 'timelimit',
- get_string('timelimit', 'quiz'), array('optional' => true));
- $mform->addHelpButton('timelimit', 'timelimit', 'quiz');
- $mform->setDefault('timelimit', $this->quiz->timelimit);
- // Number of attempts.
- $attemptoptions = array('0' => get_string('unlimited'));
- for ($i = 1; $i <= QUIZ_MAX_ATTEMPT_OPTION; $i++) {
- $attemptoptions[$i] = $i;
- }
- $mform->addElement('select', 'attempts',
- get_string('attemptsallowed', 'quiz'), $attemptoptions);
- $mform->setDefault('attempts', $this->quiz->attempts);
- // Submit buttons.
- $mform->addElement('submit', 'resetbutton',
- get_string('reverttodefaults', 'quiz'));
- $buttonarray = array();
- $buttonarray[] = $mform->createElement('submit', 'submitbutton',
- get_string('save', 'quiz'));
- $buttonarray[] = $mform->createElement('submit', 'againbutton',
- get_string('saveoverrideandstay', 'quiz'));
- $buttonarray[] = $mform->createElement('cancel');
- $mform->addGroup($buttonarray, 'buttonbar', '', array(' '), false);
- $mform->closeHeaderBefore('buttonbar');
- }
- public function validation($data, $files) {
- global $COURSE, $DB;
- $errors = parent::validation($data, $files);
- $mform =& $this->_form;
- $quiz = $this->quiz;
- if ($mform->elementExists('userid')) {
- if (empty($data['userid'])) {
- $errors['userid'] = get_string('required');
- }
- }
- if ($mform->elementExists('groupid')) {
- if (empty($data['groupid'])) {
- $errors['groupid'] = get_string('required');
- }
- }
- // Ensure that the dates make sense.
- if (!empty($data['timeopen']) && !empty($data['timeclose'])) {
- if ($data['timeclose'] < $data['timeopen'] ) {
- $errors['timeclose'] = get_string('closebeforeopen', 'quiz');
- }
- }
- // Ensure that at least one quiz setting was changed.
- $changed = false;
- $keys = array('timeopen', 'timeclose', 'timelimit', 'attempts', 'password');
- foreach ($keys as $key) {
- if ($data[$key] != $quiz->{$key}) {
- $changed = true;
- break;
- }
- }
- if (!$changed) {
- $errors['timeopen'] = get_string('nooverridedata', 'quiz');
- }
- return $errors;
- }
- }